Claims
- 1. A nucleic acid ligand to a cell target macromolecule identified according to the method comprising:
- a) preparing a candidate mixture of nucleic acid sequences;
- b) contacting said candidate mixture of nucleic acids with said cell, wherein nucleic acids having an increased affinity to the cell macromolecule relative to the candidate mixture may be partitioned from the remainder of the candidate mixture;
- c) partitioning the increased affinity nucleic acids from the remainder of the candidate mixture; and
- d) optionally amplifying the increased affinity nucleic acids to yield a mixture of nucleic acids enriched for nucleic acid sequences with relatively higher affinity and specificity for binding to said cell,
- whereby said nucleic acid ligand to said macromolecule may be identified.
- 2. A purified and isolated non-naturally occuring nucleic acid ligand to a cell macromolecule.
- 3. The purified nucleic acid ligand of claim 2 which is a non-naturally occurring nucleic acid ligand having a specific binding affinity for the cell target macromolecule, said macromolecule being a three dimensional chemical structure other than a polynucleotide that binds to said nucleic acid ligand through a mechanism which predominantly depends on Watson/Crick base pairing or triple helix binding, wherein said nucleic acid ligand is not a nucleic acid having the known physiological function of being bound by the target molecule.
- 4. The nucleic acid ligand of claim 2 which is a deoxyribonucleic acid ligand.
- 5. The nucleic acid ligand of claim 2 which is a ribonucleic acid ligand.
- 6. A method of purifying macromolecule component of a cell comprising:
- a) identifying a nucleic acid ligand to said macromolecule according to the method comprising:
- i) preparing a candidate mixture of nucleic acid sequences;
- ii) contacting said candidate mixture of nucleic acids with said cell, wherein nucleic acids having an increased affinity to the cell macromolecule relative to the candidate mixture may be partitioned from the remainder of the candidate mixture;
- iii) partitioning the increased affinity nucleic acids from the remainder of the candidate mixture; and
- iv) optionally amplifying the increased affinity nucleic acids to yield a mixture of nucleic acids enriched for nucleic acid sequences with relatively higher affinity and specificity for binding to said cell
- whereby said nucleic acid ligand to said macromolecule may be identified;
- b) separating said macromolecule component of said cell away from the remainder of said cell on the basis of affinity between said cell macromolecule and said nucleic acid ligand; and
- c) purifying said macromolecule.
- 7. The method of claim 6 wherein said macromolecule is selected from the group consisting of a protein, lipid and carbohydrate.
- 8. A purified macromolecule identified according to the method of claim 6.
- 9. The purified macromolecule of claim 8 which is selected from the group consisting of a protein, lipid and carbohydrate.
- 10. The purified macromolecule of claim 9 which is a tumor associated antigen.
Parent Case Info
This application is a 35 USC .sctn.371 national application of PCT/US96/06060, filed May 1, 1996, a continuation-in-part of Ser. No. 08/434,425, filed May 3, 1995, now U.S. Pat. No. 5,789,157, a continuation-in-part of Ser. No. 08/437,667, filed May 3, 1995, now U.S. Pat. No. 5,864,026, a continuation-in-part of Ser. No. 08/434,001, filed May 3, 1995, now U.S. Pat. No. 5,712,375, and a continuation-in-part of Ser. No. 08/433,585, filed May 3, 1995, now U.S. Pat. No. 5,763,566.
Government Interests
This work was supported by grants from the United States Government funded through the National Institutes of Health. The U.S. Government has certain rights to this invention.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/US96/06060 |
5/1/1996 |
|
|
10/28/1997 |
10/28/1997 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO96/34875 |
11/7/1996 |
|
|
US Referenced Citations (6)
Foreign Referenced Citations (5)
Number |
Date |
Country |
2 183 661 |
Jun 1987 |
GBX |
WO8906694 |
Jul 1989 |
WOX |
WO9214843 |
Sep 1992 |
WOX |
WO 9114843 |
Sep 1992 |
WOX |
WO 9406934 |
Mar 1994 |
WOX |
Non-Patent Literature Citations (19)
Entry |
Joyce (1989) Gene 82:83. |
Joyce & Inoue (1989) Nucleic Acids Research 17:711. |
Ellington & Szostak (1990) Abstracts of papers presented at the 1990 meeting on RNA Processing, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, p. 84. |
Kinzler & Vogelstein (1989) Nucleic Acids Research 17:3645. |
Kramer et al. (1974) J. Mol. Biol. 89:719. |
Levisohn & Spiegelman (1969) PNAS USA 63:805. |
Levisohn & Spiegelman (1968) PNAS USA 60:866. |
Oliphant et al. (1989) Mol. Cell. Biol. 9:2944. |
Oliphant & Struhl (1988) Nucleic Acids Research 16:7673. |
Oliphant & Struhl (1987) Methods in Enzymology 155:568. |
Oliphant et al. (1986) Gene 44:177. |
Robertson & Joyce (1990) Nature 344:467. |
Thiesen & Bach (1990) Nucleic Acids Research 18:3203. |
Tsai and Keene (1993) J. Immunol. 150:1137. |
Benjamini and Leskowitz (1988) Immunology: A Short Course, Alan R. Liss, Inc., NY, NY p. 36. |
Rosenfeld et al. (1986) J. Biol. Chem. 261:1398. |
Gath et al. (1996) Biology and Physiology of the Blood Brain Barrier, Courand and Scherman eds., Chapter 25, pp. 153-158. |
Dehouck et al. (1996) Biology and Physiology of the Blood Brain Barrier, Courand and Scherman eds., Chapter 23, pp. 143-146. |
Dehouck et al. (1990) Journal of Neurochemistry 54:1798. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
434425 |
May 1995 |
|