Targeting oxidative stress in neurodegeneration using pyridol-derived small molecules

Information

  • Research Project
  • 9514432
  • ApplicationId
    9514432
  • Core Project Number
    R15GM123463
  • Full Project Number
    1R15GM123463-01A1
  • Serial Number
    123463
  • FOA Number
    PA-16-200
  • Sub Project Id
  • Project Start Date
    6/1/2018 - 6 years ago
  • Project End Date
    5/31/2021 - 3 years ago
  • Program Officer Name
    FABIAN, MILES
  • Budget Start Date
    6/1/2018 - 6 years ago
  • Budget End Date
    5/31/2021 - 3 years ago
  • Fiscal Year
    2018
  • Support Year
    01
  • Suffix
    A1
  • Award Notice Date
    4/16/2018 - 6 years ago

Targeting oxidative stress in neurodegeneration using pyridol-derived small molecules

PROJECT SUMMARY/ABSTRACT Uncontrolled oxidative stress contributes to the development of neurodegenerative disease. This project focuses on the synthesis and analysis of four new groups of molecules based on a pyridol- containing N-heterocyclic amine parent molecule previously and successfully developed by the PI. The investigators demonstrated that this parent small molecule exhibits significant antioxidant reactivity in biological assays, is capable of crossing the blood brain barrier, and reduces beta-amyloid plaques in animal models of neurodegenerative disease. The investigators will use a rational design strategy to create the libraries and as such expect the new molecules to exhibit enhanced antioxidant activity (C.2- C.3), metabolic stability (C.4), and blood brain barrier permeability (C.5) compared to the parent molecule. The results from our first past screen will be used for further structural changes and studies. The new molecules are expected to provide potent antioxidant activity through structural modifications to the parent molecule, including (1) addition of pyridol groups, (2) changes in the base ring structure to target a range of toxic metal ions, (3) fatty acids, and (4) chemical groups inspired by nature?s own antioxidant store. We will study the first 13 new, enhanced antioxidant molecules using assays designed to understand pathways of chemical reactivity and cell culture work to assess toxicity and to quantify the ability of each new molecule to protect cells from four different models of oxidative stress. Molecules showing potent antioxidant activity will then be screened for metabolic stability and blood brain barrier permeability. The results from these studies will be used to produce hybrids of Groups 1 -2 with Groups 3-4, which will undergo similar screens to find optimized lead compounds suitable for further in vivo studies. This approach will identify the path(s) of protection each strategy of antioxidant enhancement provides and identify lead molecules to be explored further and proceed to future work involving animal toxicology, clearance, and activity assessment. Altogether, a comparative approach that uses data from chemical assays and biological studies will allow the investigators to identify molecules and moieties that provide the characteristics needed to serve as a therapeutic for neurodegenerative disorders arising from oxidative stress. This proposal takes a unique approach to targeting neurodegenerative disease by using synthetic chemistry to combine different reactive building-blocks into small molecules designed to have activity through targeting molecular features of neurodegeneration in a manner that is greater than the sum of the individual parts.

IC Name
NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES
  • Activity
    R15
  • Administering IC
    GM
  • Application Type
    1
  • Direct Cost Amount
    299999
  • Indirect Cost Amount
    78915
  • Total Cost
    378914
  • Sub Project Total Cost
  • ARRA Funded
    False
  • CFDA Code
    859
  • Ed Inst. Type
    SCHOOLS OF ARTS AND SCIENCES
  • Funding ICs
    NIGMS:378914\
  • Funding Mechanism
    Non-SBIR/STTR RPGs
  • Study Section
    SBCA
  • Study Section Name
    Synthetic and Biological Chemistry A Study Section
  • Organization Name
    TEXAS CHRISTIAN UNIVERSITY
  • Organization Department
    CHEMISTRY
  • Organization DUNS
    043807882
  • Organization City
    FORT WORTH
  • Organization State
    TX
  • Organization Country
    UNITED STATES
  • Organization Zip Code
    761290001
  • Organization District
    UNITED STATES