Title: Proteostasis modulation in inherited blinding disorders. Abstract: Missense mutations of RPE or photoreceptor specific genes often cause inherited blinding disorders. These mutated genes frequently yield protein products that are highly unstable and prone to proteasomal degradation. We recently invented a novel drug discovery strategy and identified a small molecule which can stabilize these mutated protein products. In this project, we will test the therapeutic hypothesis that proteostasis modulation is a viable and general therapeutic strategy for treating inherited blinding disorders caused by such protein destabilizing missense mutations. Currently, no cures or treatments exist for the majority of these blinding disorders. Toward the goal of fulfilling such unmet medical needs, we will study the specificity (Aim1) and mechanism (Aim2) of the proteostasis modulation by our novel small molecule. Moreover, we will prove the concept of the proteostasis modulation therapy using mouse models of severe visual impairment and blindness (Aim3). This study will reveal novel molecular pathways for stabilizing proteins whose loss of functions are associated with inherited disorders. Such pathways will become attractive targets for various therapeutic molecules.

Public Health Relevance

Missense mutations of genes are the major causes of inherited blinding disorders. These mutations frequently result in unstable protein products. This proposal characterizes a novel therapeutic molecule and mechanisms for stabilizing mutant proteins associated with inherited blinding disorders.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Research Project (R01)
Project #
1R01EY029680-01
Application #
9637893
Study Section
Biology of the Visual System Study Section (BVS)
Program Officer
Neuhold, Lisa
Project Start
2019-02-01
Project End
2023-01-31
Budget Start
2019-02-01
Budget End
2020-01-31
Support Year
1
Fiscal Year
2019
Total Cost
Indirect Cost
Name
Case Western Reserve University
Department
Pharmacology
Type
Schools of Medicine
DUNS #
077758407
City
Cleveland
State
OH
Country
United States
Zip Code
44106