Method for detection of drug-induced mutations in the reverse transcriptase gene

BACKGROUND OF THE INVENTION
The present invention relates to the field of HIV diagnosis. More particularly, the present invention relates to the field of diagnosing the susceptibility of an HIV sample to antiviral drugs used to treat HIV infection.
1. Field of the Invention
The present invention relates to a method for the rapid and reliable detection of drug-induced mutations in the HIV reverse transcriptase gene allowing the simultaneous characterization of a range of codons involved in drug resistance using specific sets of probes optimized to function together in a reverse-hybridisation assay.
2. Description of the Related Art
During the treatment of human immunodeficiency virus (HIV) type 1 infected individuals with antiretroviral nucleoside analogs emergence of resistance against these drugs has been observed. The mechanism responsible for the resistance is not fully understood, since the appearance of a resistant virus in not always correlated with clinical deterioration (Boucher et al. 1992). Amongst the reverse transcriptase (RT) inhibitors, the nucleoside analogs 3'-azido-2',3'-dideoxyThymidine (AZT, Zidovudine), 2',3'-dideoxyInosine (ddI), 2',3'-dideoxyCytidine (ddC), (-)-.beta.-L-2',3'-dideoxy-3'-thioCytidine (3TC), 2',3'-didehydro-3'deoxyThymidine (D4T) and (-)-2'3'-dideoxy-5-fluoro-3'-thiacytidine (FTC) are the most important, since they show a favourable ratio of toxicity for the host versus efficacy as antiviral. All these compounds act in a similar way, namely they serve, after intracellular phosphorylation, as chain terminators of the RT reaction. Upon prolonged treatment with these nucleoside analogs, accumulation of mutations in the viral reverse transcriptase gene (RT) occur, thereby escaping the inhibitory effect of the antivirals. The most important mutations induced by the above compounds and leading to gradually increasing resistance were found at amino acid (aa) positions 41 (M to L), 69 (T to D), 70 (K to R), 74 (L to V), 181 (Y to C), 184 (M to V) and 215 (T to Y or F) (Schinazi et al., 1994). Mutations at aa 65, 67, 75 and 219 have also been reported but these were only showing a minor decrease in sensitivity. More recently, multi-drug-resistant HIV-1 strains were described showing aa changes at codon 62, 75, 77, 116, and 151 (Iversen et al., 1996). In general, these aa changes are the consequence of single point mutations at the first or second codon letter, but in the case of T69D (ACT to GAT), T215Y (ACC to TAC) and T215F (ACC to TTC), two nucleotide mutations are necessary. Whether in these cases the single nucleotide mutation intermediates exist, and if they show any importance in the mechanism for acquiring resistance is as yet not reported. Third letter variations are in general not leading to an amino acid change, and are therefore seen as natural polymorphisms.
The regime for an efficient antiviral treatment is not clear at all. The appearance of one or several of these mutations during antiviral treatment need to be interpreted in conjunction with the virus load and the amount of CD4 cells. Indeed, since it has been shown that the effect of AZT resistance mutations can be suppressed after the appearance of the 3TC induced M184V mutation, it is clear that disease progression is multifactorial. The influence of other simultaneous occuring mutations under different combination therapies with respect to the outcome and resistance of the virus has not yet been analysed systematically. In order to get a better insight into the mechanisms of resistance and HIV biology, it is necessary to analyse follow-up plasma samples of antiviral treated patients for these mutational events together with the simultaneous occuring changes of virus titre and CD4 cells.
BRIEF SUMMARY OF THE INVENTION
It is an aim of the present invention to develop a rapid and reliable detection method for determination of the antiviral drug resistance of viruses which contain reverse transcriptase genes such as HIV retroviruses and Hepadnaviridae present in a biological sample.
More particularly it is an aim of the present invention to provide a genotyping assay allowing the detection of the different HIV RT gene wild type and mutation codons involved in the antiviral resistance in one single experiment.
It is also an aim of the present invention to provide an HIV RT genotyping assay or method which allows to infer the nucleotide sequence at codons of interest and/or the amino acids at the codons of interest and/or the antiviral drug resistance spectrum, and possibly also infer the HIV type or subtype isolate involved.
Even more particularly it is an aim of the present invention to provide a genotyping assay allowing the detection of the different HIV RT gene polymorphisms representing wild-type and mutation codons in one single experimental setup.
It is another aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated or polymorphic HIV RT sequences conferring resistance to one or more antiviral drugs, such as AZT, ddI, ddC, 3TC or FTC, D4T or others.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated or polymorphic HIV RT sequences conferring resistance to AZT.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to ddI.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to ddC.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to 3TC.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to D4T.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to FTC.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to multiple nucleoside analogues (i.e. multidrug resistance).
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to nevirapine.
It is more particularly an aim of the present invention to select particular probes able to discriminate wild-type HIV RT from mutated HIV RT sequences involving at least one of amino acid positions 41 (M to L), 50 (I to T), 67 (D to N), 69 (T to D), 70 (K to R), 74 (L to V), 75 (V to T), 151 (Q to M or L), 181 (Y to C), 184 (M to V), 215 (T to Y or F) and 219 (K to Q or E) of the viral reverse transcriptase (RT) gene.
It is particularly an aim of the present invention to select a particular set of probes, able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to any of the antiviral drugs defined above with this particular set of probes being used in a reverse hybridisation assay.
It is moreover an aim of the present invention to combine a set of selected probes able to discriminate wild-type HIV RT sequences from mutated HIV RT sequences conferring resistance to antiviral drugs with another set of selected probes able to identify the HIV isolate, type or subtype present in the biological sample, whereby all probes can be used under the same hybridisation and wash-conditions.
It is also an aim of the present invention to select primers enabling the amplification of the gene fragment(s) determining the antiviral drug resistance trait of interest.
The present invention also aims at diagnostic kits comprising said probes useful for developing such a genotyping assay.
All the aims of the present invention have been met by the following specific embodiments.
The present invention relates more particularly to a method for determining the susceptibility to antiviral drugs of an HIV retrovirus present in a biological sample, comprising:
(i) if need be releasing, isolating or concentrating the polynucleic acids present in the sample;
(ii) if need be amplifying the relevant part of the reverse transcriptase genes present in said sample with at least one suitable primer pair;
(iii) hybridizing the polynucleic acids of step (i) or (ii) with at least two RT gene probes hybridizing specifically to at least one target sequence as mentioned in any of FIG. 1 and tables 1, 2 or 4, with said probes being applied to known locations of a solid support and with said probes being capable of simultaneously hybridizing to their respective target regions under appropiate hybridization and wash conditions allowing the detection of homologous targets, or with said probes hybridizing specifically with a sequence complementary to any of said target sequences, or a sequence wherein T in said target sequence is replaced by U;
(iv) detecting the hybrids formed in step (iii);
(v) and in most cases, inferring the nucleotide sequence at the codons of interest and/or the amino acids at the codons of interest and/or the antiviral drug resistance spectrum, and possibly the type of HIV isolates involved from the differential hybridization signal(s) obtained in step (iv).
The relevant part of the RT gene refers to the regions in the RT gene harboring mutations causing resistance to antiviral drugs as described above and is particularly comprised between codons 1 and 241, and more particularly between codons 29 and 220 of the RT gene.

BRIEF DESCRIPTION OF THE FIGURES
FIG. 1: Natural and drug induced variability in the vicinity of codons 41, 50, 67-70, 74-75, 150, 181-184, 215 and 219 of the HIV RT gene. The most frequently observed wild-type sequence is shown in the top line. Naturally occuring variations are indicated below. Drug-induced variants are indicated in bold italics.
FIG. 2A. Reactivities of the selected probes for codon 41 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. *: False positive reactivities. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 2B. Reactivities of the selected probes for codons 69-70 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. *: False positive reactivities. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 2C. Reactivities of the selected probes for codons 74-75 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 2D. Reactivities of the selected probes for codon 184 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 2E. Reactivities of the selected probes for codon 215 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 2F. Reactivities of the selected probes for codon 219 immobilized on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 4. Each strip is incubated with a biotinylated PCR fragment from the reference panel. The reference panel accession numbers are indicated in Table 4. For several probes multiple reference panel possibilities are available, but only one relevant accession number given each time. On top of the strips, the amino acids at the relevant codon, as derived from the probe reactivity, is indicated.
FIG. 3. Clinical and virological features detectable in three patient follow-up samples. All three patients were infected with a HIV-1 strain showing the M41-T69-K70-L74-V75-M184-F214-T215-K219 genotype (wild type pattern). Top: Fluctuations between plasma HIV RNA copy numbers (.box-solid.) and CD4 cell count (x) are given in function of time. The different treatment regimens and the period of treatment is indicated on top. Middle: Changes that appeared during the treatment period and that could be scored by means of the LiPA probes are indicated, for patient 91007 at codon 41 and 215; for patient 94013 at codon 184; for patient 92021 at codon 70, 214, 215, 219. Bottem: Corresponding LiPA strips for a subset of the aa changes are shown. LiPA probes are indicated on the left, the aa interpretation is indicated at the right of each panel.
FIG. 4. Reactivities of the selected probes for codons 151 and 181 on LiPA strips with reference material. The position of each probe on the membrane strip is shown at the right of each panel. The sequence of the relevant part of the selected probes is given in Table 3. LiPA strips were incubated with sequence-confirmed PCR fragments, extracted and amplified from: a wild-type HIV-1 isolate (strip 1), a wild-type isolate with a polymorphism at codon 151 (strip 2) or 149 (strip 3), a multi-drug resistant HIV-1 isolate (strip 4) with no information about codon 181 and a non-nucleoside analogue treated HIV-1 isolate which remained wild-type at codon 151 (strip5).

DETAILED DESCRIPTION OF THE INVENTION
According to a preferred embodiment of the present invention, step (iii) is performed using a set of at least 2, preferably at least 3, more preferably at least 4 and most preferably at least 5 probes meticulously designed as such that they show the desired hybridization results, when used in a reverse hybridisation assay format, more particularly under the same hybridization and wash conditions.
According to a preferred embodiment, the present invention relates to a set of at least 2 probes each targetting one or more of the nucleoside RT inhibitor induced nucieotide changes or target sequences including such a nucleotide change as indicated in any of FIG. 1 or Tables 1, 2 or 4. The numbering of HIV-1 RT gene encoded amino acids is as generally accepted in literature.
More prefererably, the present invention relates to a set of two or more probes each targetting two, three, four, five or more different nucleoside RT inhibitor induced nucleotide changes as indicated in any of FIG. 1 or Tables 1, 2 or 4.
More particularly, the present invention relates to a set of at least 2 probes allowing the characterization of a wild-type, polymorphic or mutated codon at any one of the drug-induced mutation positions represented in any of FIG. 1 or Tables 1 or 2 or at any one of the polymorphic positions represented in Table 4.
Even more particularly, the present invention relates to a set of at least 2 probes allowing the characterization of a wild-type, polymorphic or mutated codon at any of the positions represented in FIG. 1.
All the above mentioned sets of probes have as a common characteristic that all the probes in said set are designed so that they can function together in a reverse-hybridization assay, more particularly under similar hybridization and wash conditions.
A particularly preferred set of probes selected out of the probes with SEQ ID NO 1 to 161 of Table 3 is described in example 2.2 and is indicated in Table 4 and FIG. 2. The particularly selected probes are also indicated in Table 3.
A particularly preferred embodiment of the present invention is a method for determining the susceptibility to antiviral drugs of an HIV isolates in a sample using a set of probes as defined above, wherein said set of probes is characterized as being chosen such that for a given mutation disclosed in any of FIG. 1, or Tables 1, 2 or 4 the following probes are included in said set:
at least one probe for detecting the presence of drug induced mutation at said position;
at least one probe for detecting the presence of a wild-type sequence at said position;
preferably also (an) additional probe(s) for detecting wild-type polymorphisms at positions surrounding the mutation position.
Inclusion of the latter two types of probes greatly contributes to increasing the sensitivity of said assays as demonstrated in the examples section.
A particularly preferred set of probes in this respect is shown in Tables 3 and 4 and FIGS. 2 and 3.
Selected sets of probes according to the present invention include at least one probe, preferably at least two probes, characterizing the presence of a drug-induced mutation in a codon position chosen from the following list of codons susceptible to mutations in the HIV RT gene: 41, 50, 67, 69, 70, 74, 75, 151, 181, 184, 215 or 219. Said probes being characterized in that they can function in a method as set out above.
Also selected probes according to the present invention are probes which allow to differentiate any of the nucleotide changes as represented in any of FIG. 1 or Tables 1, 2 or 4. Said probes being characterized in that they can function in a method as set out above.
Also selected sets of probes for use in a method according to the present invention include at least one, preferably at least two (sets of) probes, with said probes characterizing the presence of a drug-induced mutation in two codon positions chosen from the following list of codon combinations, with said codons being susceptible to mutations in the HIV RT gene: 41 and/or 50; 41 and/or 67; 41 and/or 69; 41 and/or 70; 41 and/or 74; 41 and/or 75; 41 and/or 151; 1 and/or 181; 41 and/or 184; 41 and/or 215; 41 and/or 219; 50 and/or 67; 50 and/or 69; 50 and/or 70; 50 and/or 74; 50 and/or 75; 50 and/or 75; 50 and/or 151; 50 and/or 181; 50 and/or 184; 50 and/or 215; 50 and/or 219; 67 and/or 69; 67 and/or 70; 67 and/or 74; 67 and/or 75; 67 and/or 151; 67 and/or 181; 67 and/or 184; 67 and/or 215; 67 and/or 219; 69 and/or 70; 69 and/or 74; 69 and/or 75; 69 and/or 151; 69 and/or 181; 69 and/or 184; 69 and/or 215; 69 and/or 219; 70 and/or 74; 70 and/or 75; 70 and/or 151; 70 and/or 181; 70 and/or 184; 70 and/or 215; 70 and/or 219; 74 and/or 75; 74 and/or 151; 74 and/or 181; 74 and/or 184; 74 and/or 215; 74 and/or 219; 75 and/or 151; 75 and/or 181; 75 and/or 184; 75 and/or 215; 75 and/or 219; 151 and/or 181; 151 and/or 184; 151 and/or 215; 151 and/or 219; 181 and/or 184; 181 and/or 215; 181 and/or 219; 184 and/or 215; 184 and/or 219; 215 and/or 219.
Even more preferred selected sets of probes for use in a method according to the present invention include in addition to the probes defined above a third (set of) probe(s) characterizing the presence of a third drug-induced mutation at any of positions 41, 50, 67, 69, 70, 74, 75, 151. 181, 184, 215 or 219, or particular combinations thereof.
Particularly preferred is also a set of probes which allows simultaneous detection of antiviral resistance at codons 41, 50, 67, 69, 70, 74, 75, 151, 181, 184 and 215, possibly also at codon 219.
An additional embodiment of the present invention includes at least one probe, preferably at least two probes, characterizing the presence of a drug-induced mutation in codon positions chosen from the list of codons susceptible to mutations in the HIV RT gene as mentioned in any of Table 1 or 2, such as at codons 65, 115, 150, 98, 100, 103, 106, 108, 188, 190, 138, 199, 101, 179, 236, 238 or 233, with said probes forming possibly part of a composition.
Particularly preferred embodiments of the invention thus include a set of probes for codon 41 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any the following codons as represented in region I in FIG. 1:
wild-type codon E40 (GAA) or polymorphic codon E40 (GAG), mutant codon L41 (TTG) or L41 (CTG) or wild-type codon M41 (ATG), wild-type codon E42 (GAA) or polymorphic codon E42 (GAG), wild-type codon K43 (AAG) or polymorphic codon K43 (AAA) or polymorphic E43 (GAA).
Particularly preferred embodiments of the invention thus include a set of probes for codon 50 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any the following codons as represented in region II in FIG. 1:
wild-type codon K49 (AAA) or polymorphic codon R49 (AGA), mutant codons V50 (GTT) or T50 (ACG), wild-type codon I50 (ATT) or polymorphic codon I50 (ATC).
Particularly preferred embodiments of the invention thus include a set of probes for codons 67-70 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region III in FIG. 1:
wild-type K65 (AAA) or polymorphic K65 (AAG), wild-type K66 (AAA) or polymorphic K66 (AAG). wild-type D67 (GAC) or mutant N67 (AAC), wild-type T69 (ACT) or polymorphic T69 (ACA), mutant D69 (GAT) or N69 (AAT) or A69 (GCT), wild-type K70 (AAA), polymorphic K70 (AAG) or mutant R70 (AGA).
Particularly preferred embodiments of the present invention include a set of probes for codons 74-75 comprising at least one, preferably at least two, probes for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region IV of FIG. 1:
wild-type K73 (AAA) or polymorphic K73 (AAG), wild-type L74 (TTA) or mutant V74 (GTA), wild-type V75 (GTA) or polymorphic V75 (GTG) or mutant T75 (ACA), wild-type D76 (GAT) or polymorphic D76 (GAC).
Particularly preferred embodiments of the present invention include a set of probes for codon 151 comprising at least one, preferably at least two, probes for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region V of FIG. 1:
wild-type L149 (CTT) or polymorphic L149 (CTC) or L149 (CTG), wild-type P150 (CCA) or polymorphic P150 (CCG), wild-type Q151 (CAG) or mutant MI51 (ATG) or L151 (CTG) or polymorphic Q151 (CAA).
Particularly preferred embodiments of the present invention include a set of probes for codon 181-184 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region VI of FIG. 1:
wild-type Y181 (TAT) or mutant C181 (TGT), wild-type Q182 (CAA) or polymorphic Q182 (CAG), wild-type Y183 (TAC) or polymorphic Y183 (TAT), wild-type M184 (ATG) or mutant V184 (GTG) or I184 (ATA) or G184 (AGG), wild-type D185 (GAT) or polymorphic D185 (GAC), wild-type D186 (GAT) or polymorphic E186 (GAG), wild-type L187 (TTA) or polymorphic G187 (GGA) or V187 (GTA).
Particularly preferred embodiments of the present invention include a set of probes for codon 215 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region VII of FIG. 1
wild-type G213 (GGA) or polymorphic G213 (GGG), wild-type F214 (TTT) or polymorphic F214 (TTC) or L214 (CTT) or L214 (TTA), wild-type T215 (ACC) or polymorphic T215 (ACT), mutant Y215 (TAC) or F215 (TTC).
Particularly preferred embodiments of the present invention include a set of probes for codon 219 comprising at least one, preferably at least two, probe(s) for targetting at least one, preferably at least two, nucleotide changes in any of the following codons as represented in region VIII of FIG. 1:
wild-type D218 (GAC) or polymorphic D218 (GAT), wild-type K219 (AAA) or polymorphic K219 (AAG) or mutant Q219 (CAA) or E219 (GAA), wild-type K220 (AAA) or polymorphic K220 (AAG).
Examples of probes of the invention are represented in Tables 3 and 4, and FIGS. 2 and 3. In Table 3, the probes withheld after selection are indicated using the letter "y". These probes of the invention are designed for attaining optimal performance under the same hybridization conditions so that they can be used in sets of at least 2 probes for simultaneous hybridization; this highly increases the usefulness of these probes and results in a significant gain in time and labour. Evidently, when other hybridization conditions would be preferred, all probes should be adapted accordingly by adding or deleting a number of nucleotides at their extremities. It should be understood that these concommitant adaptations should give rise to essentially the same result, namely that the respective probes still hybridize specifically with the defined target. Such adaptations might also be necessary if the amplified material should be RNA in nature and not DNA as in the case for the NASBA (nucleic acid sequence-based amplification) system.
The selection of the preferred probes of the present invention is based on a reverse hybridization assay using immobilized oligonucleotide probes present at distinct locations on a solid support. More particularly the selection of preferred probes of the present invention is based on the use of the Line Probe Assay (LiPA) principle which is a reverse hybridization assay using oligonucleotide probes immobilized as parallel lines on a solid support strip (Stuyver et al. 1993; international application WO 94/12670). This approach is particularly advantageous since it is fast and simple to perform. The reverse hybridization format and more particularly the LiPA approach has many practical advantages as compared to other DNA techniques or hybridization formats, especially when the use of a combination of probes is preferable or unavoidable to obtain the relevant information sought.
It is to be understood, however, that any other type of hybridization assay or format using any of the selected probes as described further in the invention, is also covered by the present invention.
The reverse hybridization approach implies that the probes are immobilized to certain locations on a solid support and that the target DNA is labelled in order to enable the detection of the hybrids formed.
Methods for detecting nucleotide changes in RT genes of other viruses which have been found to harbour a pattern of drug-resistance mutation similar to the one observed for HIV based on the same principles as set out in the present invention should be understood as also being covered by the scope of the present invention.
The following definitions serve to illustrate the terms and expressions used in the present invention.
The term "antiviral drugs" refers particularly to an antiviral nucleoside analog or any other RT inhibitor. Examples of such antiviral drugs and the mutation they may cause in the HIV-RT gene are disclosed in Schinazi et al., 1994 and Mellors et al., 1995. The contents of the latter two documents particularly are to be considered as forming part of the present invention. The most important antiviral drugs focussed at in the present invention are disclosed in Tables 1 to 2.
The term "drug-induced mutation" refers to a mutation in the HIV RT gene which provokes a reduced susceptibility of the isolate to the respective drug.
The target material in the samples to be analysed may either be DNA or RNA, e.g.: genomic DNA, messenger RNA, viral RNA or amplified versions thereof. These molecules are also termed polynucleic acids.
It is possible to use genomic DNA or RNA molecules from HIV samples in the methods according to the present invention.
Well-known extraction and purification procedures are available for the isolation of RNA or DNA from a sample (f.i. in Maniatis et al., Molecular Cloning: A Laboratory Manual, 2nd Edition, Cold Spring Harbour Laboratory Press (1989)).
The term "probe" refers to single stranded sequence-specific oligonucleotides which have a sequence which is complementary to the target sequence to be detected.
The term "target sequence" as referred to in the present invention describes the nucleotide sequence of the wildtype, polymorphic or drug induced variant sequence of the RT gene to be specifically detected by a probe according to the present invention. This nucleotide sequence may encompass one or several nucleotide changes. Target sequences may refer to single nucleotide positions, codon positions, nucleotides encoding amino acids or to sequences spanning any of the foregoing nucleotide positions. In the present invention said target sequence often includes one or two variable nucleotide positions. It is to be understood that the complement of said target sequence is also a suitable target sequence in some cases. The target sequences as defined in the present invention provide sequences which should be complementary to the central part of the probe which is designed to hybridize specifically to said target region.
The term "complementary" as used herein means that the sequence of the single stranded probe is exactly the (inverse) complement of the sequence of the single-stranded target, with the target being defined as the sequence where the mutation to be detected is located.
Since the current application requires the detection of single basepair mismatches, very stringent conditions for hybridization are required, allowing in principle only hybridization of exactly complementary sequences. However, variations are possible in the length of the probes (see below), and it should be noted that, since the central part of the probe is essential for its hybridization characteristics, possible deviations of the probe sequence versus the target sequence may be allowable towards head and tail of the probe, when longer probe sequences are used. These variations, which may be conceived from the common knowledge in the art, should however always be evaluated experimentally, in order to check if they result in equivalent hybridization characteristics than the exactly complementary probes.
Preferably, the probes of the invention are about 5 to 50 nucleotides long, more preferably from about 10 to 25 nucleotides. Particularly preferred lengths of probes include 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25 nucleotides. The nucleotides as used in the present invention may be ribonucleotides, deoxyribonucleotides and modified nucleotides such as inosine or nucleotides containing modified groups which do not essentially alter their hybridisation characteristics.
Probe sequences are represented throughout the specification as single stranded DNA oligonucleotides from the 5' to the 3' end. It is obvious to the man skilled in the art that any of the below-specified probes can be used as such, or in their complementary form, or in their RNA form (wherein T is replaced by U).
The probes according to the invention can be prepared by cloning of recombinant plasmids containing inserts including the corresponding nucleotide sequences, if need be by cleaving the latter out from the cloned plasmids upon using the adequate nucleases and recovering them, e.g. by fractionation according to molecular weight. The probes according to the present invention can also be synthesized chemically, for instance by the conventional phospho-triester method.
The term "solid support" can refer to any substrate to which an oligonucleotide probe can be coupled, provided that it retains its hybridization characteristics and provided that the background level of hybridization remains low. Usually the solid substrate will be a microtiter plate, a membrane (e.g. nylon or nitrocellulose) or a microsphere (bead) or a chip. Prior to application to the membrane or fixation it may be convenient to modify the nucleic acid probe in order to facilitate fixation or improve the hybridization efficiency. Such modifications may encompass homopolymer tailing, coupling with different reactive groups such as aliphatic groups, NH.sub.2 groups, SH groups, carboxylic groups, or coupling with biotin, haptens or proteins.
The term "labelled" refers to the use of labelled nucleic acids. Labelling may be carried out by the use of labelled nucleotides incorporated during the polymerase step of the amplification such as illustrated by Saiki et al. (1988) or Bej et al. (1990) or labelled primers, or by any other method known to the person skilled in the art. The nature of the label may be isotopic (.sup.32 P, .sup.35 S, etc.) or non-isotopic (biotin, digoxigenin, etc.).
The term "primer" refers to a single stranded oligonucleotide sequence capable of acting as a point of initiation for synthesis of a primer extension product which is complementary to the nucleic acid strand to be copied. The length and the sequence of the primer must be such that they allow to prime the synthesis of the extension products. Preferably the primer is about 5-50 nucleotides long. Specific length and sequence will depend on the complexity of the required DNA or RNA targets, as well as on the conditions of primer use such as temperature and ionic strength.
The fact that amplification primers do not have to match exactly with the corresponding template sequence to warrant proper amplification is amply documented in the literature (Kwok et al., 1990).
The amplification method used can be either polymerase chain reaction (PCR; Saiki et al., 1988), ligase chain reaction (LCR; Landgren et al., 1988; Wu & Wallace, 1989; Barany, 1991), nucleic acid sequence-based amplification (NASBA; Guatelli et al., 1990; Compton, 1991), transcription-based amplification system (TAS; Kwoh et al., 1989), strand displacement amplification (SDA; Duck, 1990; Walker et al., 1992) or amplification by means of Q.beta. replicase (Lizardi et al., 1988; Lomeli et al., 1989) or any other suitable method to amplify nucleic acid molecules known in the art.
The oligonucleotides used as primers or probes may also comprise nucleotide analogues such as phosphorothiates (Matsukura et al., 1987), alkylphosphorothiates (Miller et al., 1979) or peptide nucleic acids (Nielsen et al., 1991; Nielsen et al., 1993) or may contain intercalating agents (Asseline et al., 1984).
As most other variations or modifications introduced into the original DNA sequences of the invention these variations will necessitate adaptions with respect to the conditions under which the oligonucleotide should be used to obtain the required specificity and sensitivity. However the eventual results of hybridisation will be essentially the same as those obtained with the unmodified oligonucleotides.
The introduction of these modifications may be advantageous in order to positively influence characteristics such as hybridization kinetics, reversibility of the hybrid-formation, biological stability of the oligonucleotide molecules, etc.
The "sample" may be any biological material taken either directly from the infected human being (or animal), or after culturing (enrichment). Biological material may be e.g. expectorations of any kind, broncheolavages, blood, skin tissue. biopsies, sperm, lymphocyte blood culture material, colonies, liquid cultures, faecal samples, urine etc.
The sets of probes of the present invention will include at least 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 or more probes. Said probes may be applied in two or more distinct and known positions on a solid substrate. Often it is preferable to apply two or more probes together in one and the same position of said solid support.
For designing probes with desired characteristics, the following useful guidelines known to the person skilled in the art can be applied.
Because the extent and specificity of hybridization reactions such as those described herein are affected by a number of factors, manipulation of one or more of those factors will determine the exact sensitivity and specificity of a particular probe, whether perfectly complementary to its target or not. The importance and effect of various assay conditions, explained further herein, are known to those skilled in the art.
The stability of the [probe:target] nucleic acid hybrid should be chosen to be compatible with the assay conditions. This may be accomplished by avoiding long AT-rich sequences, by terminating the hybrids with G:C base pairs, and by designing the probe with an appropriate Tm. The beginning and end points of the probe should be chosen so that the length and % GC result in a Tm about 2-10.degree. C. higher than the temperature at which the final assay will be performed. The base composition of the probe is significant because G-C base pairs exhibit greater thermal stability as compared to A-T base pairs due to additional hydrogen bonding. Thus, hybridization involving complementary nucleic acids of higher G-C content will be stable at higher temperatures.
Conditions such as ionic strength and incubation temperature under which a probe will be used should also be taken into account when designing a probe. It is known that hybridization will increase as the ionic strength of the reaction mixture increases, and that the thermal stability of the hybrids will increase with increasing ionic strength. On the other hand, chemical reagents, such as formamide, urea, DMSO and alcohols, which disrupt hydrogen bonds, will increase the stringency of hybridization. Destabilization of the hydrogen bonds by such reagents can greatly reduce the Tm. In general, optimal hybridization for synthetic oligonucleotide probes of about 10-50 bases in length occurs approximately 5.degree. C. below the melting temperature for a given duplex. Incubation at temperatures below the optimum may allow mismatched base sequences to hybridize and can therefore result in reduced specificity.
It is desirable to have probes which hybridize only under conditions of high stringency. Under high stringency conditions only highly complementary nucleic acid hybrids will form; hybrids without a sufficient degree of complementarity will not form. Accordingly, the stringency of the assay conditions determines the amount of complementarity needed between two nucleic acid strands forming a hybrid. The degree of stringency is chosen such as to maximize the difference in stability between the hybrid formed with the target and the nontarget nucleic acid. In the present case, single base pair changes need to be detected, which requires conditions of very high stringency.
The length of the target nucleic acid sequence and, accordingly, the length of the probe sequence can also be important. In some cases, there may be several sequences from a particular region, varying in location and length, which will yield probes with the desired hybridization characteristics. In other cases, one sequence may be significantly better than another which differs merely by a single base. While it is possible for nucleic acids that are not perfectly complementary to hybridize, the longest stretch of perfectly complementary base sequence will normally primarily determine hybrid stability. While oligonucleotide probes of different lengths and base composition may be used, preferred oligonucleotide probes of this invention are between about 5 to 50 (more particularely 10-25) bases in length and have a sufficient stretch in the sequence which is perfectly complementary to the target nucleic acid sequence.
Regions in the target DNA or RNA which are known to form strong internal structures inhibitory to hybridization are less preferred. Likewise, probes with extensive self-complementarity should be avoided. As explained above, hybridization is the association of two single strands of complementary nucleic acids to form a hydrogen bonded double strand. It is implicit that if one of the two strands is wholly or partially involved in a hybrid that it will be less able to participate in formation of a new hybrid. There can be intramolecular and intermolecular hybrids formed within the molecules of one type of probe if there is sufficient self complementarity. Such structures can be avoided through careful probe design. By designing a probe so that a substantial portion of the sequence of interest is single stranded, the rate and extent of hybridization may be greatly increased. Computer programs are available to search for this type of interaction. However, in certain instances, it may not be possible to avoid this type of interaction.
Standard hybridization and wash conditions are disclosed in the Materials & Methods section of the Examples. Other conditions are for instance 3.times. SSC (Sodium Saline Citrate), 20% deionized FA (Formamide) at 50.degree. C.
Other solutions (SSPE (Sodium saline phosphate EDTA), TMACl (Tetramethyl ammonium Chloride), etc.) and temperatures can also be used provided that the specificity and sensitivity of the probes is maintained. If need be, slight modifications of the probes in length or in sequence have to be carried out to maintain the specificity and sensitivity required under the given circumstances.
In a more preferential embodiment, the above-mentioned polynucleic acids from step (i) or (ii) are hybridized with at least two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen fifteen, sixteen, seventeen, eighteen, nineteen, twenty, or more of the above-mentioned target region specific probes, preferably with 5 or 6 probes, which, taken together, cover the "mutation region" of the RT gene.
The term "mutation region" means the region in the HIV RT gene sequence where most of the mutations responsible for antiviral drug resistance or other observed polymorphisms are located. A preferred part of this mutation region is represented in FIG. 1. This mutation region can be divided into 8 important parts: drug induced variations and polymorphisms located within aa positions 38 to 44 of RT gene, drug induced variations and polymorphisms located within aa positions 47 to 53 of RT gene, drug induced variations and polymorphisms located within aa positions 65 to 72 of the RT gene, drug induced variations and polymorphisms located within aa positions 73 to 77 of the RT gene. drug-induced variations and polymorphisms located within aa positions 148 to 154 of the RT gene, drug-induced variations and polymorphisms located within aa positions 180 to 187 of the RT gene, drug induced variations and polymorphisms located within aa positions 212 to 216 of the RT gene and drug induced variations and polymorphisms located within aa positions 217 to 220 of the RT gene.
Since some mutations may be more frequently occurring than others, e.g. in certain geographic areas or in specific circumstances (e.g. rather closed communities) it may be appropiate to screen only for specific mutations, using a selected set of probes as indicated above. This would result in a more simple test, which would cover the needs under certain circumstances.
In order to detect the antiviral drug RT resistance pattern with the selected set of oligonucleotide probes, any hybridization method known in the art can be used (conventional dot-blot, Southern blot, sandwich, etc.).
However, in order to obtain fast and easy results if a multitude of probes are involved, a reverse hybridization format may be most convenient.
In a preferred embodiment the selected set of probes are immobilized to a solid support in known distinct locations (dots, lines or other figures). In another preferred embodiment the selected set of probes are immobilized to a membrane strip in a line fashion. Said probes may be immobilized individually or as mixtures to delineated locations on the solid support.
A specific and very user-friendly embodiment of the above-mentioned preferential method is the LiPA method, where the above-mentioned set of probes is immobilized in parallel lines on a membrane, as further described in the examples.
The invention also provides for any probes and primer sets designed to specifically detect or amplify specifically these RT gene polymorphisms, and any method or kits using said primer and probes sets.
The invention further provides for any of the probes as described above, as well as compositions comprising at least one of these probes.
The invention also provides for a set of primers allowing amplification of the mutation region of the RT gene in general.
Primers may be labeled with a label of choice (e.g. biotine). Different primer-based target amplification systems may be used, and preferably PCR-amplification, as set out in the examples. Single-round or nested PCR may be used.
The invention also provides for a kit for inferring the nucleotide sequence at codons of interest in the HIV RT gene and/or the amino acids corresponding to these codons and/or the antiviral drug resistance spectrum of HIV isolates present in a biological sample comprising the following components:
(i) when appropiate, a means for releasing, isolating or concentrating the polynucleic acids present in said sample;
(ii) when appropriate, at least one of the above-defined set of primers;
(iii) at least two of the probes as defined above, possibly fixed to a solid support;
(iv) a hybridization buffer, or components necessary for producing said buffer;
(v) a wash solution, or components necessary for producing said solution;
(vi) when appropriate, a means for detecting the hybrids resulting from the preceding hybridization.
(vii) when appropriate, a means for attaching said probe to a solid support.
The term "hybridization buffer" means a buffer enabling a hybridization reaction to occur between the probes and the polynucleic acids present in the sample, or the amplified products, under the appropiate stringency conditions.
The term "wash solution" means a solution enabling washing of the hybrids formed under the appropiate stringency conditions.
A line probe assay (LiPA) was designed for the screening for variations at interesting amino acids in the HIV RT gene. The principle of the assay is based on reverse hybridization of an amplified polynucleic acid fragment such as a biotinylated PCR fragment of the HIV RT gene onto short oligonucleotides. The latter hybrid can then, via a biotine-streptavidine coupling, be detected with a non-radioactive colour developing system.
The present invention further relates to a reverse hybridization method wherein said oligonucleotide probes are immobilized, preferably on a membrane strip.
The present invention also relates to a composition comprising any of the probes as defined in Tables 3 and 4 or FIGS. 2 and 3.
The present invention relates also to a kit for inferring the HIV RT resistance spectrum of HIV in a biological sample, coupled to the identification of the HIV isolate involved, comprising the following components:
(i) when appropiate, a means for releasing, isolating or concentrating the polynucleic acids present in the sample;
(ii) when appropriate, at least one of the sets of primers as defined above;
(iii) at least one of the probes as defined above, possibly fixed to a solid support;
(iv) a hybridization buffer, or components necessary for producing said buffer;
(v) a wash solution, or components necessary for producing said solution;
(vi) when appropriate, a means for detecting the hybrids resulting from the preceding hybridization;
(vii) when appropriate, a means for attaching said probe to a solid support
The following examples only serve to illustrate the present invention. These examples are in no way intended to limit the scope of the present invention.
Table 1: Mutations in HIV-1 RT gene associated with resistance against nucleoside RT inhibitors. More details are given in Mellors et al., 1995.
Table 2: Mutations in HIV-1 RT gene associated with resistance against HIV-1 specific RT inhibitors. For more details see Mellors et al., 1995.
Abbreviations in Table 1 and 2:
AZT: 3'-azido-2'3'-dideoxythymidine
ddC: 2'3'-dideoxycytidine
ddI: 2'3'-dideoxyinosine
3TC: 3'dideoxy-3'-thiacytidine
FTC: 2'3'-dideoxy-5-fluoro-3'-thiacytidine
L'697,593: 5-ethyl-6-methyl-3-(2-phthalimido-ethyl)pyridin-2(1H)-one
L'697,661: 3-Il(-4,7-dichloro-1,3-benzoxazol-2-yl)methyl amino-5-ethyl-6-methylpyridin-2(1H)-one
Nevirapine: 1l-cyclopropyl-5,1l-dihydro-4-methyl-6H-dipyridol(3,2-b:2',3'-e)diazepin-6-one
TIBO R82150: (+)-(5S)-4,5,6,7,-tetrahydro-5-methyl-6-(3-methyl-2butenyl)imidazo(4,5,1-)k) (1,4)-benzodiazepin-2(1H)-thione
TIBO 82913: (+)-(5S)-4,5,6,7,-tetrahydro-9-chloro-5-methyl-6-(3-methyl-2-butenyl)imidazo(4,5,1kj)-(1,4)benzo-diazepin-2(1H)-thione
TSAO-m.sup.2 T: (2',5'-bis-o-(tert-buthyldimethylsilyl)-3'-spiro-5'-(4'-amino-1',2'-oxathiole-2',2'-dioxide)
U90152: 1-(3-(1-methylethyl)-amino)-2-pyridinyl)-4-(5-(methylsulphonyl)-amino)-1H-indol-2yl)-carbonyl)-piperazine
Table 3: HIV RT wild-type and drug resistance mutation probes. The probes witheld after selection are indicated as "y".
Table 4: Prediction and prevalence of LiPA probe reactivity. Probe names corresponding with the selected motifs are presented in the left column, with the relevant part of each probe shown under the consensus. The prevalence of these motives, determined using panels of European and US sera, is given in the middle column.
The right column indicates the corresponding strips of FIGS. 2A-F and the accession number of the reference panel clone used to obtain this reactivity.
EXAMPLES
Example 1
a. Materials and Methods.
Plasma samples were taken from HIV type-1 infected patients and stored at -20.degree. C. until use. Patients were treated with AZT, ddI, ddC, D4T, 3TC, or several combinations of these prodrugs. The European serum samples tested were randomly selected. For the US serum collection, only the first sample from a follow-up series was taken. Some of these US patients were treated, others were not treated.
HIV RNA was prepared using the guanidinium-phenol procedure. Fifty .mu.l plasma was mixed with 150 .mu.l Trizol.RTM.LS Reagent (Life Technologies, Gent, Belgium) at room temperature (volume ratio: 1 unit sample/3 units Trizol). Lysis and denaturation occured by carefully pipetting up and down several times, followed by an incubation step at room temperature for at least 5 minutes. Fourty .mu.l CHCl.sub.3 was added and the mixture was shaken vigorously by hand for at least 15 seconds, and incubated for 15 minutes at room temperature. The samples were centrifuged at maximum 12,000 g for 15 minutes at 4.degree. C., and the colourless aquous phase was collected and mixed with 100 .mu.l isopropanol. To visualize the minute amounts of viral RNA, 20 .mu.l of 1 .mu.g/.mu.l Dextran T500 (Pharmacia) was added, mixed and left at room temperature for 10 minutes. Following centrifugation at max. 12,000 g for 10 minutes at 4.degree. C. and aspiration of the supernatant, the RNA pellet was washed with 200 .mu.l ethanol, mixed by vortexing and collected by centrifugation at 7,500 g for 5 minutes at 4.degree. C. Finally the RNA pellet was briefly air-dryed and stored at -20.degree. C.
For cDNA synthesis and PCR amplification, the RNA pellet was dissolved in 15 .mu.l random primers (20 ng/.mu.l, pdN.sub.6, Pharmacia), prepared in DEPC-treated or HPLC grade water. After denaturation at 70.degree. C. for 10 minutes, 5 .mu.l cDNA mix was added, composed of 4 .mu.l 5.times.AMV-RT buffer (250 mM Tris.HCl pH 8.5, 100 mM KCl, 30 mM MgCl.sub.2, 25 mM DTT), 0.4 .mu.L 25 mM dXTPs, 0.2 .mu.l or 25 U Ribonuclease Inhibitor (HPRI, Amersham), and 0.3 .mu.l or 8 U AMV-RT (Stratagene). cDNA synthesis occured during the 90 minutes incubation at 42.degree. C. The HIV RT gene was than amplified using the following reaction mixture: 5 .mu.l cDNA, 4.5 .mu.l 10.times.Taq buffer, 0.3 .mu.l 25 mM dXTPs, 1 .mu.l (10 pmol) of each PCR primer, 38 .mu.l H.sub.2 O, and 0.2 .mu.l (1 U) Taq. The primers for amplification had the following sequence: outer sense RT-9: 5' bio-GTACAGTATTAGTAGGACCTACACCTGTC 3' (SEQ ID NO 96); nested sense RT-1: 5' bio-CCAAAAGTTAAACAATGGCCATTGACAGA 3' (SEQ ID NO 97); nested antisense RT-4: 5' bio-AGTTCATAACCCATCCAAAG 3' (SEQ ID NO 98); and outer antisense primer RT-12: 5' bio-ATCAGGATGGAGTTCATAACCCATCCA 3' (SEQ ID NO 99). Annealing occured at 57.degree. C., extension at 72.degree. C. and denaturation at 94.degree. C. Each step of the cycle took 1 minute, the outer PCR contained 40 cycles, the nested round 35. Nested round PCR products were analysed on agarose gel and only clearly visible amplification products were used in the LiPA procedure. Quantification of viral RNA was obtained with the HIV Monitor.TM.test (Roche, Brussels, Belgium).
Selected PCR products, amplified without 5' biotine primers, were cloned into the pretreated EcoRV site of the pGEMT vector (Promega). Recombinant clones were selected after .alpha.-complementation and restriction fragment length analysis, and sequenced with plasmid primers and internal HIV RT primers. Other biotinylated fragments were directly sequenced with a dye-terminator protocol (Applied Biosystems) using the amplification primers. Alternatively, nested PCR was carried out with analogs of the RT-4 and RT-1 primers, in which the biotine group was replaced with the T7- and SP6-primer sequence, respectively. These amplicons were than sequenced with an SP6- and T7-dye-primer procedure. Sequence information was submitted to the GENBANK.
Probes were designed to cover the different polymorphisms and drug induced mutations. In principle, only probes that discriminated between one single nucleotide variation were retained. However, for certain polymorphisms at the extreme ends of the the probe, cross-reactivity was tolerated. Specificity was reached for each probe individually after considering the % (G+C), the probe lenght, the final concentration of the buffer components, and hybridization temperature. Optimized probes were provided enzymatically with a poly-T-tail using the TdT (Pharmacia) in a standard reaction condition, and purified via precipitation. Probe pellets were disolved in standard saline citrate (SSC) buffer and applied as horizontal parallel lines on a membrane strip. Control lines for amplification (probe 5' CCACAGGGATGGAAAG 3', HIV RT aa 150 to aa 155) and conjugate incubation (biotinylated DNA) were applied alongside. After fixation of the probes onto the membranes by baking, membranes were sliced into 4 mm strips.
To perform LiPA tests, equal amounts (10 .mu.l) of biotinylated amplification products and denaturation mixture (0.4 N NaOH/0.1% SDS) were mixed, followed by an incubation at room temperature for 5 minutes. Following this denaturation step, 2 ml hybridization buffer (2.times.SSC, 0.1% SDS, 50 mM Tris pH7.5) was added together with a membrane strip and hybridization was carried out at 39.degree. C. for 30 min. Then, the hybridization mixture was replaced by stringent washing buffer (same composition as hybridisation buffer), and stringent washing occured first at room temperature for 5 minutes and than at 39.degree. C. for another 25 minutes. Buffers were than replaced to be suitable for the streptavidine alkaline phosphatase conjugate incubations. After 30 minutes incubation at room temperature, conjugate was rinsed away and replaced by the substrate components for alkaline phosphatase, Nitro-Blue-Tetrazolium and 5-Bromo-4-Chloro-3-Indolyl Phosphate. After 30 minutes incubation at room temperature, probes where hybridization occured became visible because of the purple brown precipitate at these positions.
b. Results.
b.1 The HIV-1 RT Gene PCR and Selection of a Reference Panel.
PCR primers were chosen outside the target regions for probe design. The amplified region located inside the nested primers covered the HIV-1 RT gene from codon 29 to codon 220. The primer design was based on published sequences from the HIV-1 genotype B clade. European and United States HIV-1 positive serum samples, stored appropriately (at -20.degree. C.) without repeating freezing-thawing cycles, were PCR positive in 96% of the cases (not shown). The annealing temperature for the selected primers seemed to be crucial (57.degree. C.). At 55.degree. C., a second a specific amplicon of approximately 1500-bp was generated; and at 59.degree. C. the amount of specific fragment decreased drastically. With the current primer combination, the corresponding RT region could be amplified from isolates of the genotype A, C, D and F clade, but with a reduced sensitivity.
A total of 25 selected PCR fragments with the target polymorphisms and mutations were retained as reference panel and sequenced on both strands. The selection occurred during the evaluation of the probes, and these samples originated from naive or drug-treated European or US patients. Biotinylated PCR products from this panel (Accession Number L78133 to L78157) were used to test probes for specificity and sensitivity.
b.2 Nucleotide Target Region for Probe Design and Probe Selection.
Table 4 and parts of FIG. 1 are a compilation of the natural and drug-selected variability in the vicinity of aa 41, 69-70, 74-75, 184, 215, and 219 of the HIV RT gene. To create this table and parts of this figure, the "National Centre for Biotechnology Information" database was searched and all HIV-1 genome entries were retrieved and analyzed one by one. Only those entries displaying non-ambiguous sequence information in the vicinity of the above-mentioned codons were retained for further interpretation. It should be noted that the indicated variations do not imply that they occur in the same sequence: for example the variability observed at codon 40 and 43 may occasionally occur together, but most often, if they occur, only one of them is found. In these 6 regions, a total of 19 different third-letter and two first-letter (codon 43 AAG versus GAG and codon 214 TTT versus CTT) polymorphisms need to be included in the selection of wild type probes. Another 13 first-letter and/or second-letter variations are drug-induced and are the main targets for the selection of probes (FIG. 1).
For the design of relevant probes, only those database motifs that systematically returned (highly prevalent motif) were included, while scattered mutations which were found randomly (low prevalent motif, not shown) were ignored. Based on database sequences, seven motifs for codon 41 (91.6% of all entrees), 6 for codon 69-70 (86.2%), 2 for codon 74-75 (90.4%), 5 for codon 184 (96.6%), 9 for codon 215 (94.1%), and 2 for codon 219 (88.2%) were selected (Table 4).
Probe names corresponding with the selected motifs are presented in the left column of Table 4, with the relevant sequence part of each probe shown under the consensus. The prevalence of these motives was than determined using panels of European and US sera (Table 4).
In many cases, the database entries were not representative for the samples tested. Upon analyzing the European and US samples, many were not reactive with these database-selected probes. Upon sequencing analysis of several of these unreactive PCR products, another 8 motifs became apparent, for which the corresponding probes were designed (41w20, 41m12, 70m13, 74w9, 74m6, 74m12, 184w24, 215m49). By including these newly designed motifs, negative results were markedly decreased; for all codon positions except codon 219, the total percentage of reactivity exceeds 90%.
Another 4 probes were designed (41m11, 215m50, 219m7, and 219m9) because their sequence motif was found in the cloned reference panel, although no reactivity with the tested plasma virus samples was found so far. The existence of these rare sequence motifs is explained by assuming that they exist at an extremely low frequency in the viral quasispecies, remaining undetectable by direct detection methods, but becoming apparent after cloning.
The sequence motif of probe 215m13 was generated in recombinant clones by site-directed mutagenesis (not shown). The rational behind this probe design was to determine whether the sequence combination of codon Y215 (TAC) can occur in combination with L214 (CTT) in vivo. However, this latter motif was not found in the plasma samples tested.
Four probes (41w15, 70w8, 215w29, 215w27) are in fact redundant, because they detect identical sequence motifs covered by other probes. However, the location of these redundant probes is slightly different to their sequence-identical counterpart. These probes have the potential to avoid negative results which might otherwise appear as a consequence of random mutations in the probe target area and can therfore increase the specificity of recognition.
b.3 Probe Specificity and Sensitivity.
The 48 selected probes were applied separately on LiPA strips. Biotinylated PCR fragments generated from the reference panel or directly from plasma virus were alkali-denatured, the hybridization buffer and LiPA strips were added, and submitted to stringent hybridization and washing conditions. Positions where hybridization occurred were revealed by the biotine-streptavidine calorimetric detection system. FIG. 2(A to F) shows the reactivity of these 48 designed probes. In the right columns of Table 4, there is the indication of the corresponding strip in FIG. 2, and the accession number of the reference panel clone used to obtain this reactivity. The reactivities of these probes were concordant with the nucleotide sequences. False positive reactivities were observed only for probe 41w19 (FIG. 2A.9) and for 70m3 (FIG. 2B.8), with extremely rare sequence motifs 41m12 (prevalence less than 0.3%) and 70m16 (not experimentally found), respectively. Weak cross-reactivity, as was observed on probe 41m13 with a 41m27 motif (FIG. 2A.10) was, in general, not tolerated in the probe design. When occurring, however, it never influenced the genotypic resistance interpretation.
b.4 Applicability of the LiPA in Patient Management.
We selected follow-up samples from three patients and analyzed the viral genotype on the 48 LiPA probes. FIG. 3 illustrates the applicability of genotypic resistance measurement in conjunction with the analysis of viral load and CD4 cell count. All three patients had a wild type virus (i.e. M41-T69-K70-L74-V75-M184-F214-T219-K219) strain in the sample collected before anti-retroviral treatment. Codon positions that changed upon treatment are presented in FIG. 3.
From Patient 91007, 11 serum samples were analyzed, the first sample being collected 2 weeks before the start of therapy. The LiPA revealed that before treatment, in a T215 context, two variants at codon position 213 were predominantly present (GGG and GGA respectively detected by probe 215w11 and 215w9/215w29). From week 50 until week 81, a mixture of T215 and Y215 could be detected. Both variants at codon 213 were also represented in the selected resistant genotypes (probes 215m17 and 215m14 are positive). From week 94 onwards, only Y215 mutant virus could be detected. A nearly identical geno-conversion at codon 41 was observed, with the detection of mixtures (M41 and L41) from week 81 until week 111; from week 126 onwards, only L41 could be found (strips not shown). CD4 values were highly variable. Nevertheless, a continuous decrease in CD4 is apparent (p=0.019, linear regression analysis). Viral load also decreased initially. However, the direct response to the treatment might have been missed in this follow-up series, since the first sample after the start of the treatment is at 32 weeks. From than on, viral load increased.
Patient 94013 was treated with 3TC monotherapy from week 2 onwards. At week 10, a mixture of M184 and V184 could be detected. From week 14 on, only V184 was present. CD4 counts increased nearly 2.5-fold, with the highest level at week 10. Viral load decreased spectacularly by 3 log units. But from week 10 onwards, a slight but steady increase to week 23 was noted. The decrease in CD4 and increase in viral load coincided with the appearance of the V184 motif.
Patient 92021 was followed for 55 weeks. AZT treatment started at week 10, followed by a supplemental ddC treatment from week 20 onwards. The first sample was found to be reactive with probe 215w9/w29 (F214T215=TTTACC), but trace amounts of reactivity with 215w53 (L214T215=TTAACC) could be detected as well, indicating the presence of at least two variants at that time. From week 19 onwards, the codon L214=TTA motif became more important. At week 42, the first sign of genotypic resistance could be detected by the presence of a F214Y215 motif (TTTTAT). Finally at week 55, only F214Y215 could be detected. The L214=TTA motif disappeared completely. At week 42, a mixture (K and R) at codon 70 was present, but at week 55, only R70 could be detected. At week 55, a mixture of codon 219 motifs (K and E) was found (strips not shown). CD4 initially increased, with a maximal effect during AZT monotherapy peaking at week 21. From then on, a continuous decrease was observed. However, ten weeks of AZT treament did not result in a drop in viral load, since the values of week 16 and 19 were nearly unchanged. It is only after start of the combination therapy (week 20) that the viral load dropped by 1.67 log. From this patient, it is tempting to assume that L214T215 confers genotypic resistance to AZT treatment, and that the addition of ddC is necessary to induce the natural F214Y215 genotype. The rise in CD4 cell count may be the consequence of the drug itself, and not from drug-induced protection (Levy et al. 1996).
c. Discussion
By adapting the previously designed LiPA technology (Stuyver et al. 1993) for the HIV RT gene, the described assay format permits the rapid and simultaneous detection of wild type and drug-selected variants associated with the genotypic resistance for AZT, ddI, ddC, d4T, FTC and 3TC. The Inno LiPA HIV drug-resistance strip provides information about the genetic constitution of the RT gene in the vicinity of codon 41, 69, 70, 74, 75, 184, 215, and 219 at the nucleotide and, hence, also at the deduced protein level. Essentially, the biotinylated RT PCR product is hybridized against immobilized specific oligonucleotides (Table 4), which are directed against the indicated codon variabilities. Following this reverse-hybridization, the oligonucleotide-biotinylated-PCR-strand hybrid is recognized by the streptavidine-alkaline phosphate conjugate, which then in turn converts the alkaline phosphate substrate into a purple brown precipitate.
Using this assay, we studied the specificity and reactivity of 48 probes, covering 6 different regions. This combination should allow the reliable detection of most of the genetic resistance-related codon combinations observed to date. Occasionally occurring mutations in the vicinity of the target codons, not taken into consideration during probe design, may eventually prevent hybridization of the probes for a particular target region. This problem is partially solved by the redundancy of probes at the most important codons. Results obtained using 358 HIV infected plasma samples showed that, depending on the codon position under investigation, between 82.4% and 100% of the combinations could be detected, or an average of 92.7%. It is important to mention here that the assay was developed for resistence detection of the HIV-1 genotype B, and only limited information is currently available about the outcome of this assay with other genotypes. Since the amplification primer combination is more or less universal for all the HIV-1 isolates, some of the indeterminate results may well be due to the presence of non-genotype B virus strains.
So far, several assays for the detection of the wild-type and drug-selected mutations in the HIV RT gene have been described. These include Southern blotting (Richman et al., 1991), primer-specific PCR (Larder et al., 1991), PCR-LDR (Frenkel et al., 1995), RNAse A mismatch cleaving (Galandez-Lopez et al., 1991), and hybridization against enzyme-labeled probes (Eastman et al., 1995). The general advantage of the LiPA and other genotypic assays is the speed by which results are obtained when compared to phenotypic assays. The particular advantage of our test is its multi-parameter (in this particular case multi-codon) format. Moreover, the assay can easily be extended not only for the screening of the other RT-codons, but also for proteinase codons associated with resistance (Mellors et al., 1995). As was illustrated in FIG. 3, mixtures of wild-type and drug-selected mutations can be detected easily. The detection limit for these mixtures is dependent on the sensitivity of the probes, but reliable results can be obtained as soon as 5 to 10% of the minor component is present (not shown). We were unable to provide reliable evidence for mixtures with any sequencing protocol at the same sensitivity level.
Due to the large amount of variables that need to be included in the selection of specific probes (temperature of hybridization, ionic strength of hybridization buffer, length of the probe, G+C content, strand polarity), it might occasionally occur that some of the probes will show weak false positive reaction with related but hitherto unreported sequences. In our experience, and if this occurred, this has never influenced the interpretation at the deduced aa level. In the current selection of probes, all except two (41w19 and 70m3) were retained on the basis of 100% specificity: as soon as one nucleotide differs in the probe area, hybridization is abolished. Further fine-tuning of these two probes will therefore be necessary to obtain the required specificity.
Accompanying polymorphisms in the vicinity of the target codons are found with a rather high prevalence in wild-type virus strains, but not in mutant sequences. A partial list of such combinations is hereby presented: codon V74=GTA without polymorphism at codon 73, 75 or 76; codon V184=GTG without codon Q182=CAG; and codon F215=TTC without F214=TTC/TTA or L214=CTT. The most intriguing example is the following: L214T215 (CTTACC) is predicted for approximately 7.8% of the wild type sequences. The corresponding motif L214Y215 (CTTTAT) apparently does not exist in plasma virus. From the example shown in FIG. 3, it is clear that selection of mutants is a very flexible and complex phenomena. In this particular case, viruses having codon F214 were replaced by a L214 viral population in the AZT monotherapy period, but upon selecting for genotypic drug resistance at codon 215, the original F214 configuration was restored. Clearly, the selection for the Y215 genotype prohibits the presence of a L214 genotype. Since no evidence has yet emerged that L214 confers resistance to anti-retroviral compounds, the appearance of this special mutant during the AZT monotherapy period is difficult to interpret. More research will certainly be necessary to clarify this issue. But if L214 should indeed provide low-level genotypic resistance to AZT treatment, approximately 7.8% of the naive infections will not benefit from initial AZT monotherapy.
Since antiviral treatment can result in a marked extension of life expectancy for HIV infected patients, it is of utmost importance to find the best drug regimen for each individual separately. Therefore, monitoring of the magnitude and duration of the virus load and CD4 cell changes is a prerequisite. However, knowledge concerning the genetic constitution of the virus may also be an important factor in designing optimal treatment schedules. Optimizing therapies making good use of available information (viral load, CD4 cell count, genetic resistance) has remained largely unexploited. If this was partially due to the complexity of screening for all the mutational events, the above-described LiPA technology should remove one key obstacle.
In conclusion, we have described a genotypic assay for the detection of wild type and drug selected codons in the HIV RT gene. The combination of the assay result along with viral load and CD4 cell monitoring should permit better design of patient-dependent optimal treatment schedules.
Example 2
Multi-Drug Resistant (MDR) HIV-1 isolates have been described. These MDR isolates are characterized by having mutations in their genome, compared to the wild type HIV-1 genome, which result in a set of amino acid changes. A key mutation leading to multi-drug resistance was found to be localized in codon 151 of the HIV-1 RT gene. Consequently, and as detecting these MDR isolates is clinically important, we designed probes recognizing wild-type (probe 151w2) and mutant (probes 151m4 and 151m19) HIV-1 isolates. Furthermore, the presence of polymorphisms in the direct vicinity of codon 151 (codon 149) and at codon 151 have been described. Therefore, we also designed two additional probes (probes 151w6 and 151w11) which detect these polymorphisms (FIG. 4 and Table 3).
Treatment with non-nucleoside analogues, such as Nevirapine (Boehringer Ingelheim), selects for several amino acid changes in conserved regions of the HIV-1 RT gene. One of the most important amino acid changes is Y181C, a codon change that confers high level resistance. As the detection of this mutation is also clinically important, we designed probes recognizing the wild-type (181w3 and 181w5) and mutant (181m7) isolates (FIG. 4 and Table 3).
FIG. 4 shows the application of the selected probes for codon 151 and 181. The position of the probes on the strips is indicated on the right side of the strips. LiPA strips were incubated with sequence-confirmed PCR fragments, extracted and amplified from: a wild type HIV-1 isolate (strip 1), a wild type HIV-1 isolate with a polymorphism at codon 151 (strip 2) or codon 149 (strip 3), a multi-drug resistant HIV-1 isolate (strip 4) with no information about codon 181 and a non-nucleoside analogue-treated HIV-1 isolate which remained wild type at codon 151(strip 5).
TABLE 1______________________________________AZT M41L ATG to TTG or CTG D67N GAC to AAC K70R AAA to AGA T215Y ACC to TAC T215F ACC to TTC K219Q AAA to CAA K219E AAA to GAA ddl K65R AAA to AGA L74V TTA to GTA V75T GTA to ACA M184V ATG to GTG ddC K65R AAA to AGA T69D ACT to GAT L74V TTA to GTA V75T GTA to ACA M184V ATG to GTG Y215C TTC to TGC d4T I50T ATT to ACT V75T GTA to ACA 3TC or M184V ATG to GTG or GTA FTC M184I ATG to ATA 1592U89 K65R AAA to AGA L74V TTA to GTA Y115F TAT to TTT M184V ATG to GTG______________________________________
TABLE 2______________________________________Nevirapine A98G GCA to GGA L100I TTA to ATA K103N AAA to AAC V106A GTA to GCA V108I GTA to ATA Y181C TAT to TGT Y181I TGT to ATT Y188C TAT to TGT G190A GGA to GCA TIBO L199I TTA to ATA R82150 TIBO L100I TTA to ATA R82913 K103N AAA to AAC V106A GTA to GCA E138K GAG to AAG Y181C TAT to TGT Y188H TAT to CAT Y188L TAT to TTA L697,593 K103N AAA to AAC Y181C TAT to TGT L697,661 A98G GCA to GGA L100I TTA to ATA L697,661 K101E AAA to GAA K103N AAA to AAC K103Q AAA to CAA V108I GTA to GCA V179D GTT to GAT V179E GTT to GAG Y181C TAT to TGT BHAP U-90152 P236L CCT to CTT BHAP K101E AAA to GAA U-87201 K103N AAA to AAC Y181C TAT to TGT Y188H TAT to CAT E233V GAA to GTA P236L CCT to CTT K238T AAA to ACA BHAP L100I TTA to ATA U-88204 V106A GTA to GCA Y181C TAT to TGT Y181I TGT to ATT HEPT Y188C TAT to TGT E-EBU Y181C TAT to TGT E-EBU-dM Y106A GTA to GCA E-EPU and Y181C TAT to TGT E-EPSeU Y188C TAT to TGT a-APA Y181C TAT to TGT R18893 S-2720 G190E GGA to GAA TSAO E138K GAG to AAG BM + 51.0836 Y181C TAT to TGT______________________________________
TABLE 3__________________________________________________________________________HIV RT wild-type and drug resistanceFormula probe Sequentie oligo SEQ ID NO PROBE selection__________________________________________________________________________wild-type probes for position M41E40M41K43 41w7 AGAAATGGAAAAGGA 1 y E40M41K43 41w15 TGTACAGAAATGGAA 2 y M41K43 41w16 AAATGGAAAAGGAAG 3 E40M41 41w18 TACAGAGATGGAAA 4 E40M41K43 41w19 GTACAGAGATGGAAA 5 E40M41K43 41w20 AGAGATGGAAAAAGA 6 y E40M41K43 41w30 AGAAATGGAGAAGGA 7 y E40M41 41w31 ACAGAGATGGAAAA 8 E40M41 41w32 GTACAGAGATGGAA 9 y E40M41K43 41w33 CAGAGATGGAAAAG 10 E40M41K43 41w34 AGAAATGGAAAAAGA 11 E40M41K43 41w35 GAAATGGAAAAAGA 12 E40M41K43 41w36 CAGAAATGGAAAAAGA 13 y E40M41K43 41w37 AGAAATGGAAAAAGAA 14drug-induced variant probes for position L41E40L41K43 41m8 AGAATTGGAAAAGGA 15 E40L41K43 41m11 AGAGTTGGAAAAGGA 16 y E40L41K43 41m12 AGAGCTGGAAAAGG 17 y E40L41K43 41m13 AGAACTGGAAAAGG 18 y E40L41K43 41m14 GAGCTGGAAAAGG 19 E40L41K43 41m21 ACAGAATTGGAAAAG 20 y E40L41 41m22 ACAGAATTGGAAAA 21 E40L41 41m23 ACAGAACTGGAAAA 22 E40L41K43 41m24 AGAATTGGAAGAGG 23 y E40L41E43 41m25 CAGAATTGGAAGAGG 24 E40L41E43 41m26 AGAATTGGAAGAGGA 25 E40L41E43 41m27 AGAACTGGAAGAGG 26 y E40L41E43 41m28 CAGAACTGGAAGAGG 27 E40L41E43 41m29 AGAACTGGAAGAGGA 28wild-type probes for positions I50 or V50 or T50K49I50 50w4 CAAAAATTGGGCCT 29 y R49I50 50w9 ATTTCAAGAATTGGG 30 y K49V50 50w5 TTCAAAAGTTGGGC 31 y K49I50 50w13 CAAAAATCGGGCCTG 32 y K49T50 50w14 AAAAATCGGGCCTGA 33 ywild-type probe for position D67K64K65K66D67 67w4 AAAGAAGAAAGACAG 34 ydrug-induced variant probe for position N67K64K65K66N67 67m19 ATAAAGAAAAAGAACAGTA 35 ywild-type probes for positions T69 or K70T69K70 70w1 AGTACTAAATGGAGAA 36 y D69K70 70w2 AGTGATAAATGGAGAA 37 y T69K70 70w8 ACAGTACTAAATGGAG 38 y K70K73 70w11 TAAATGGAGAAAAITAG 40drug-induced variant probes for positions D69 or N69 or A69 or R70D69R70 70m3 GTGATAGATGGAGAA 41 T69R70 70m6 GTACTAGATGGAGA 42 T69R70 70m12 AGTACTAGATGGAGA 43 y T69R70 70m13 AGTACAAGATGGAGA 44 y N69R70 70m14 CAGTAATAGATGGAG 45 y A69R70 70m15 ACAGTGCTAGATGGA 46 A69R70 70m16 CAGTGCTAGATGGA 47 y A69R70 70m17 CAGTGCTAGATGGA 48 D69R70 70m18 CAGTGATAGATGGA 49 y D69R70 70m19 CAGTGATAGATGGAG 50 D69R70 70m20 AGTGATAGATGGAG 51 D69R70 70m21 AGTGATAGATGGAGA 52wild-type probes for positions L74 or V75K73L74V75D76 74w5 GAGAAAATTAGTAGATTT 53 y K73L74V75D76 74w8 AAAATTAGTAGACTTC 54 y K73L74V75D76 74w9 GAGAAAGTTAGTGGATT 55drug-induced variant probes for positions V74 or T75K73V74V75D76 74m6 AGAAAAGTAGTAGATTT 56 y K73L74T75D76 74m10 AAAATTAACAGATTTC 57 K73L74T75D76 74m11 GAAAATTAACAGATTT 58 K73L74T75D76 74m12 GAAAATTAACAGATTTC 59 ywild-type probes for position Q151P150Q151G152 151w2 CTTCCACAGGGATGG 60 y P150Q151G152 151w6 CTTCCACAAGGATGG 61 y P150Q151G152 151w11 TGCTCCCACAGGGATG 62 ydrug-induced variant probe for position M151P150M151G152 151m4 CTTCCAATGGGATGG 63 y P150M151G152 151m19 GCTTCCAATGGGATGG 64 ywild-type probe for position Y181Y181 181w3 AGTTATCTATCAATACAG 65 ydrug-induced variant probe for position C181C181 181m7 AGTTATCTGTCAATAC 66 ywild-type probes for position M184Q182M184 184w11 TCAATACATGGATGAGG 67 y Q182M184 184w17 TCAGTACATGGATGAGG 68 y Q182M184 184w18 ATCAATACATGGATGA 69 Q182M184 184w19 TCAGTACATGGATG 70 Q182M184 184w21 ATCAATATATGGATG 71 y Q182M184 184w22 ATCAATATATGGATGA 72 Q182M184 184w23 TCAATATATGGATGA 73 Q182M184 184w24 TCAATACATGGACGA 74 y Q182M184 184w25 CAATACATGGACGAT 75 Q182M184 184w26 TCAATACATGGACGAT 76drug-induced variant probes for position V184 or I184Q182V184 184m12 CAATACGTGGATGAGGG 77 y I184 184m13 AATACATAGATGAT 78 Q182I184 184m14 CAATACATAGATGAT 79 Q182I184 184m15 CAATACATAGATGATT 80 Q182V184 184m16 CAATACGTAGATGAT 81 Q182V184 184m20 TCAATACGTGGATGA 82 Q182I184 184m27 TCAATACATAGATGAT 83 Q182I184 184m28 ATCAATACATAGATGAT 84 ywild-type probes for position T215G213F214T215 215w9 GGATTTACCACACCA 85 y L214T215 215w10 GACTTACCACACCA 86 y F214T215 215w11 GGTTTACCACACCA 87 y F214T215 215w16 GATTTACCACACCA 88 T215 215w22 TTACTACACCAGAC 89 y T215 215w24 TTACCACACCAGA 90 G213L214T215 215w27 TGGGGACTTACCAC 91 y G213F214T215 215w29 TGGGGATTTACCAC 92 y G213F214T215 215w32 GGGGTTCACCACAC 93 G213F214T215 215w33 GGGATTCACCACAC 94 y G213F214T215 215w34 GGGATTTACCACACCAG 95 G213L214T215 215w35 TGGGGACTTACCACACC 96 G213F214T215 215w36 TGGGGGTTTACCACACC 97 G213F214T215 215w37 GGGATTTACTACACCAG 98 G213L214T215 215w52 GGGATTAACCACAC 99 G213L214T215 215w53 GGGGATTAACCACA 100 y G213L214T215 215w54 TGGGGATTAACCACA 101 G213L214T215 215w55 GGGGGTTAACCACA 102 G213L214T215 215w56 GGGGTTAACCACAC 103 G213L214T215 215w57 TGGGGGTTAACCAC 104 G213L214T215 215w65 GGGATTGACCACAC 105 G213L214T215 215w66 GGATTGACCACACC 106 G213L214T215 215w67 GGGATTGACCACA 107 y G213L214T215 215w68 GGGACTGACCACA 108 y G213L214T215 215w69 GGGACTGACCACAC 109 G213L214T215 215w70 TGGGGGTTAACCACA 110 G213L214T215 215w71 TGTGGTTAACCCCCA 111 y G213L214T215 215w51 GGGGCTTACCACAC 112drug-induced variant probes for position Y215 or F215G213L214Y215 215m13 GGACTTTACACACC 113 y G213F214Y215 215m14 GGGTTTTACACACC 114 y G213F214F215 215m15 GGATTTTTCACACCA 115 G213F214Y215 215m17 GGATTTTACACACC 116 y G213F214Y215 215m38 GGGATTTTACACACCAG 117 G213F214F215 215m39 GGGATTTTTCACACCAG 118 G213F214Y215 215m40 GGGATTTTACACAC 119 G213F214Y215 215m41 GGGGATTTTACACA 120 G213F214Y215 215m43 CCCTAAAATGTGTG 121 G213F214F215 215m44 GGATTTTTCACACC 122 F214F215 215m45 GATTTTTCACACCA 123 y G213F214F215 215m46 GGGATTTTTCACAC 124 G213F214Y215 215m42 CCCCTAAAATGTGT 125 F214Y215 215m47 GGTTTTATACACCA 126 G213F214Y215 215m48 GGGTTTTATACACC 127 G213F214Y215 215m49 GGGGTTTTATACAC 128 y G213L214T215 215m50 GGGGGCTTACCACA 129 y G213F214Y215 215m61 GGATTCTACACACC 130 y F214Y215 215m62 GATTCTACACACC 131 G213F214Y215 215m63 GGATTCTACACAC 132 G213F214Y215 215m64 GGGATTCTACACAC 133 G213F214Y215 215m72 GGGTTTTATACCCC 134 F214Y215 215m73 GGTTTTATACCCC 135 F214Y215 215m74 GTTTTATACCCCA 136wild-type probes for position K219K219 219w1 ACCAGACAAAAAACA 137 K219 219w2 ACCAGACAAAAAAC 138 y K219 219w3 CACCAGACAAAAAAC 139 K219 219w13 CAGACAAGAAACAT 140 K219 219w14 CCAGACAAGAAACA 141 K219 219w15 ACCAGACAAGAAACA 142 K219 219w16 AGACAAAAAGCATC 143 y K219 219w17 CAGACAAAAAGCAT 144 K219 219w18 CAGACAAAAAGCATC 145 K219 219w19 CCAGATAAAAAACA 146 K219 219w20 ACCAGATAAAAAAC 147 K219 219w21 CCCAGATAAAAAACA 148 K219 219w22 CCAGATAAAAAACATC 149 K219 219w23 CACCAGATAAAAAAC 150 K219 219w24 CAGACAAGAAACATC 151 K219 219w25 ACCAGACAAGAAAC 152drug-induced variant probes for position Q219 or E219Q219 219m4 ACCAGACCAAAAACA 153 E219 219m5 ACCAGACGAAAAACA 154 Q219 219m6 ACCAGATCAAAAACA 155 Q219 219m7 ACCAGATCAAAAAC 156 y Q219 219m8 CACCAGATCAAAAAC 157 E219 219m9 ACCAGACGAAAAAC 158 y E219 219m10 CCAGACGAAAAACA 159 Q219 219m11 CCAGACCAAAAACA 160 Q219 219m12 ACCAGACCAAAAAC 161__________________________________________________________________________
TABLE 4__________________________________________________________________________Prediction and prevalance of LiPA probe reactivity concensus prevalance Correspondingnucleic acid amino acid database Europe US Rp Figure__________________________________________________________________________probe Codon 38-43 n=191/m=25 n=306 n=52 n=25 strip Acc.Nb__________________________________________________________________________ TGTACAGAAATGGAAAAG CTEMEK 41w7 ------------ ----122(62.9%)237 35 111a.1L78149 41w15* 118230 38 91a.1L78149 41w19 -----G------ ---- 5( 2.6%) 10 2 21a.2L78156 41w20 --G--------A ---- 0 6 0 11a.3L78157 41w30 --------G--- ---- 1( 0.5%) 8 6 11a.4L78154 41m21 ------T-------- --L-- 18( 9.4%) 37 7 21a.5L78136 41m11 --GT-------- -L-- 0 0 0 11a.6L781 40 41m24 ---T-----G-- -L-E 12( 6.3%) 1 2 11a.7L78144 41m13 ---C-------- -L-- 14( 7.3%) 21 3 11a.8L78139 41m12 --GC-------- -L-- 0 1 0 11a.9L78155 41m27 ---C-----G-- -L-E 3( 1.6%) 0 1 1a.10L78137 total175(91.6%) 95.1%100%__________________________________________________________________________ 88%probe Codon 68-72 n=354/m=32 n=306 n=52 n=25__________________________________________________________________________ AGTACTAAATGGAGA STKWR 70w1 224(63.3%)230 39 131b.1,2L78147 70w8* 208210 38 111b.2L78144 70m12 G------- R-- 37(10.5%) 46 6 41b.3L78148 70m13 A-G------- R-- 0 0 1 21b.4L78133 70w2 GA---------- D--- 25( 7.1%) 4 4 21b.5L78136 70m3 GA--G------- DR-- 10( 2.8%) 3 1 01b.6pending 70m14 A--G---- NR- 7( 2.0%) 4 5 21b.7L78154 70m16 G---G---- AR- 2( 0.6%) 0 0 11b.8L78150 total305(86.2%) 91.8% 94.2% 96%__________________________________________________________________________probe Codon 72-77 n=364/m=20 n=306 n=52 n=25__________________________________________________________________________ AGAAAATTAGTAGATTTC RKLVDF 74w5 320(87.9%)264 48 161c.1L78150 74w8 -----------C--- ----- 9( 2.5%) 34 1 21c.2L78147 74w9 G-----G--- 0 17 3 21c.3L78137 74m6 G-------- V-- 0 5 0 31c.4L78149 74m12 ------AC---- --T-- 0 1 1 11c.5L78136 total329(90.4%) 93.5% 98.1%__________________________________________________________________________ 96%probe Codon 182-185 n=322/m=12 n=306 n=52 n=25__________________________________________________________________________ CAATACATGGAT QYMD 184w11 285(88.5%)267 46 181d.1L78147 184w17 G--------- 16( 5.0%) 9 4 31d.2L78137 184w21 T------ 6( 1.9%) 4 2 11d.3L78145 184w24 C 0 1 0 11d.4L78144 184m12 G----- V- 1( 0.3%) 8 0 11d.5L78142 184m28 A--- I- 3( 0.9%) 0 0 11d.6L78148 total311(96.6%) 93.8% 98.1%100%__________________________________________________________________________probe Codon 212-218 n=321/m=36 n=306 n=52 n=25__________________________________________________________________________ TGGGGATTTACCACACCAGAC WGFTTPD 215w11 G------------ ---- 9( 2.8%) 15 3 21e.1L78146 215w9 --------------- -----142(44.2%)1 78 24 31e.2L781 41 215w29.sup.f 142105 16 31e.2L78141 215w33 -----C------ ---- 9( 2.8%) 8 4 11e.3L781 54 215w10 C----------- L--- 25( 7.8%) 10 0 21e.4L78150 215w27.sup.f C----- L- 25 14 0 21e.4L78150 215m50 --GC-------- -L-- 0 0 0 11e.5L78145 215w53 -----A------ -L-- 1( 0.3%) 1 3 11e.6L78138 215w22 --T------- -- ---- 3( 0.9%) 10 2 11e.7L781 34 215m17 ------TA---- --Y- 88(27.4%) 50 12 71e.8L781 44 215m14 --G---TA---- --Y- 24( 7.5%) 24 1 11e.9L781 49 215m49 --G---TAT--- --Y- 0 2 0 21e.10L78135 215m45 ---TT------ -F-- 1( 0.3%) 16 0 11e.11L78135 215m13 ---C--TA---- -LY- 0 0 0 21e.12L78155 total302(94.1%) 92.8% 90.4%__________________________________________________________________________ 96%probe Codon 217-220 n=204/m=12 n=34 n=52 n=26__________________________________________________________________________ CCAGACAAAAAA PDKK 219w2 179(87.7%) 26 42 181f.1L78144 219m4 C----- Q- 1( 0.5%) 2 4 21f.2L78135 219m7 TC----- Q- 0 0 0 11f.3L78133 219m9 G----- E- 0 0 0 11f.4pending total179(88.2%) 82.4% 82.7% 84.6%__________________________________________________________________________ n=: amount of sequences (database retrieved), or isolates tested m=: amount of motifs corresponding with the n database sequences * : redundant probes RP: reference panel The total percentage for European and US samples is not the sum of probe reactivities, but a result of the complete interpretations for these codons.
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Wu D, Wallace B. The ligation amplification reaction (LAR)--amplification of specific DNA sequences using sequential rounds of template-dependent ligation. Genomics 1989; 4:560-569.
__________________________________________________________________________# SEQUENCE LISTING - - - - (1) GENERAL INFORMATION: - - (iii) NUMBER OF SEQUENCES: 164 - - - - (2) INFORMATION FOR SEQ ID NO: 1: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #1: - - AGAAATGGAA AAGGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 2: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #2: - - TGTACAGAAA TGGAA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 3: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - 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- (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #42: - - GTACTAGATG GAGA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 43: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #43: - - AGTACTAGAT GGAGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 44: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #44: - - AGTACAAGAT GGAGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 45: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #45: - - CAGTAATAGA TGGAG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 46: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #46: - - ACAGTGCTAG ATGGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 47: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #47: - - CAGTGCTAGA TGGA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 48: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #48: - - CAGTGCTAGA TGGA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 49: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #49: - - CAGTGATAGA TGGA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 50: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #50: - - CAGTGATAGA TGGAG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 51: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #51: - - AGTGATAGAT GGAG - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 52: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #52: - - AGTGATAGAT GGAGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 53: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 18 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #53: - - GAGAAAATTA GTAGATTT - # - # - # 18 - - - - (2) INFORMATION FOR SEQ ID NO: 54: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #54: - - AAAATTAGTA GACTTC - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 55: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #55: - - GAGAAAGTTA GTGGATT - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 56: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #56: - - AGAAAAGTAG TAGATTT - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 57: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #57: - - AAAATTAACA GATTTC - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 58: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #58: - - GAAAATTAAC AGATTT - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 59: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #59: - - GAAAATTAAC AGATTTC - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 60: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #60: - - CTTCCACAGG GATGG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 61: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #61: - - CTTCCACAAG GATGG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 62: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #62: - - TGCTCCCACA GGGATG - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 63: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #63: - - CTTCCAATGG GATGG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 64: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #64: - - GCTTCCAATG GGATGG - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 65: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 18 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #65: - - AGTTATCTAT CAATACAG - # - # - # 18 - - - - (2) INFORMATION FOR SEQ ID NO: 66: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #66: - - AGTTATCTGT CAATAC - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 67: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #67: - - TCAATACATG GATGAGG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 68: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #68: - - TCAGTACATG GATGAGG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 69: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #69: - - ATCAATACAT GGATGA - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 70: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #70: - - TCAGTACATG GATG - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 71: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #71: - - ATCAATATAT GGATG - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 72: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #72: - - ATCAATATAT GGATGA - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 73: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #73: - - TCAATATATG GATGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 74: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #74: - - TCAATACATG GACGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 75: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #75: - - CAATACATGG ACGAT - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 76: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #76: - - TCAATACATG GACGAT - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 77: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #77: - - CAATACGTGG ATGAGGG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 78: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #78: - - AATACATAGA TGAT - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 79: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #79: - - CAATACATAG ATGAT - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 80: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #80: - - CAATACATAG ATGATT - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 81: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #81: - - CAATACGTAG ATGAT - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 82: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #82: - - TCAATACGTG GATGA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 83: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 16 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #83: - - TCAATACATA GATGAT - # - # - # 16 - - - - (2) INFORMATION FOR SEQ ID NO: 84: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #84: - - ATCAATACAT AGATGAT - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 85: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #85: - - GGATTTACCA CACCA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 86: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #86: - - GACTTACCAC ACCA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 87: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #87: - - GGTTTACCAC ACCA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 88: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #88: - - GATTTACCAC ACCA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 89: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #89: - - TTACTACACC AGAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 90: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #90: - - TTACCACACC AGA - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 91: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #91: - - TGGGGACTTA CCAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 92: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #92: - - TGGGGATTTA CCAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 93: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #93: - - GGGGTTCACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 94: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #94: - - GGGATTTACC ACACCAG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 95: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #95: - - GGGATTTACC ACACCAG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 96: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #96: - - TGGGGACTTA CCACACC - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 97: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #97: - - TGGGGGTTTA CCACACC - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 98: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #98: - - GGGATTTACT ACACCAG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 99: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #99: - - GGGATTAACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 100: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #100: - - GGGGATTAAC CACA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 101: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #101: - - TGGGGATTAA CCACA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 102: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #102: - - GGGGGTTAAC CACA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 103: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #103: - - GGGGTTAACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 104: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #104: - - TGGGGGTTAA CCAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 105: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #105: - - GGGATTGACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 106: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #106: - - GGATTGACCA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 107: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #107: - - GGGATTGACC ACA - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 108: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #108: - - GGGACTGACC ACA - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 109: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #109: - - GGGACTGACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 110: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #110: - - TGGGGGTTAA CCACA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 111: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #111: - - TGTGGTTAAC CCCCA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 112: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #112: - - GGGGCTTACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 113: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #113: - - GGACTTTACA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 114: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #114: - - GGGTTTTACA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 115: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #115: - - GGATTTTTCA CACCA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 116: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #116: - - GGATTTTACA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 117: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #117: - - GGGATTTTAC ACACCAG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 118: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 17 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #118: - - GGGATTTTTC ACACCAG - # - # - # 17 - - - - (2) INFORMATION FOR SEQ ID NO: 119: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #119: - - GGGATTTTAC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 120: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #120: - - GGGGATTTTA CACA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 121: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #121: - - CCCTAAAATG TGTG - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 122: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #122: - - GGATTTTTCA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 123: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #123: - - GATTTTTCAC ACCA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 124: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #124: - - GGGATTTTTC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 125: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #125: - - CCCCTAAAAT GTGT - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 126: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #126: - - GGTTTTATAC ACCA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 127: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #127: - - GGGTTTTATA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 128: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #128: - - GGGGTTTTAT ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 129: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #129: - - GGGGGCTTAC CACA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 130: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #130: - - GGATTCTACA CACC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 131: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #131: - - GATTCTACAC ACC - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 132: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #132: - - GGATTCTACA CAC - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 133: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #133: - - GGGATTCTAC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 134: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #134: - - GGGTTTTATA CCCC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 135: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #135: - - GGTTTTATAC CCC - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 136: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 13 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #136: - - GTTTTATACC CCA - # - # - # 13 - - - - (2) INFORMATION FOR SEQ ID NO: 137: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #137: - - ACCAGACAAA AAACA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 138: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #138: - - GGGACTGACC ACAC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 139: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #139: - - CACCAGACAA AAAAC - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 140: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #140: - - CAGACAAGAA ACAT - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 141: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #141: - - CCAGACAAGA AACA - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 142: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 15 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #142: - - ACCAGACAAG AAACA - # - # - # 15 - - - - (2) INFORMATION FOR SEQ ID NO: 143: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - - (ii) MOLECULE TYPE: DNA (genomic) - - (iii) HYPOTHETICAL: NO - - (iv) ANTI-SENSE: NO - - (xi) SEQUENCE DESCRIPTION: SEQ ID NO: - #143: - - AGACAAAAAG CATC - # - # - # 14 - - - - (2) INFORMATION FOR SEQ ID NO: 144: - - (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 14 base - #pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear - 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Number	Date	Country	Kind
96870005	Jan 1996	EPX
96870081	Jun 1996	EPX

Number	Name	Date
5409810	Larder et al.	Apr 1995
5631128	Kozal et al.	May 1997
5759770	Guertler et al.	Jun 1998
5827648	Eastman et al.	Oct 1998

Number	Date	Country
0 422 762	Apr 1991	EPX
0 532 258	Mar 1993	EPX
WO9216180	Oct 1992	WOX
WO9412670	Jun 1994	WOX
9412670	Jun 1994	WOX

Method for detection of drug-induced mutations in the reverse transcriptase gene

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US Referenced Citations (4)

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Non-Patent Literature Citations (11)

Entry
Mellors et al., "Mutations in HIV-1 Reverse Transcriptase and Protease Associated with Drug Resistance," Int. Antiviral News 3:8-13 (1995).
Schinazzi et al., "Mutations in HIV-1 Reverse Transcriptase and Protease Associated with Drug Resistance," Int. Antiviral News 2:72-74 (1994).
Larder et al., "Multiple Mutations in HIV-1 Reverse Transcriptase Confer High-Level Resistance to Zidovudine (AZT)," Science 246:1155-1158 (1989).
Eron et al., "Susceptibility Testing by Polymerase Chain Reaction DNA Quantitation: A Method to Measure Drug Resistance of Human Immunodeficiency Virus Type 1 Isolates," Proceedings of the National Academy of Sciences of USA 89:3241-3245 (1992).
Gingeras et al., "Use of Self-Sustained Sequence Replication Amplification Reaction to Analyze and Detect Mutations in Zidovudine-Resistant Human Immunodeficiency Virus," The Journal of Infectious Diseases 164:1066-1074 (1991).
Stuyver et al., "Typing of HCV Isolates and Characterisation of New Subtypes Using a Line Probe Assay," J. Gen. Virol. 74:1093-1102 (1993).
Lipshutz et al., "Using Oligonucleotide Probe Arrays to Access Genetic Diversity," Biotechniques 19:442-447 (1995).
Iversen et al., "Multidrug Resistant HIV-1 Strains Resulting form Combination Antiretroviral Therapy," J. Virol. 70:1086-1090 (1996).
Mellors et al., Int. Antiviral News 3(1), 8-13 (1995).
Shafer et al., J. Inf. Diseases 172, 70-78 (1995).
Stuyver et al., Antimicrobial Agents and Chemo. 41, 284-291 (1997).