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Published on: July 20, 2022
omicSynth: an Open Multi-omic Community Resource for Identifying Druggable Targets across Neurodegenerative Diseases
Chelsea X Alvarado1,2, Mary B Makarious3,4,5, Cory A Weller1,2
1Center for Alzheimer's and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA, 20814.
Abstract:
Treatments for neurodegenerative disorders remain rare, although recent FDA approvals, such as Lecanemab and Aducanumab for Alzheimer's Disease, highlight the importance of the underlying biological mechanisms in driving discovery and creating disease modifying therapies. The global population is aging, driving an urgent need for therapeutics that stop disease progression and eliminate symptoms. In this study, we create an open framework and resource for evidence-based identification of therapeutic targets for neurodegenerative disease. We use Summary-data-based Mendelian Randomization to identify genetic targets for drug discovery and repurposing. In parallel, we provide mechanistic insights into disease processes and potential network-level consequences of gene-based therapeutics. We identify 116 Alzheimer's disease, 3 amyotrophic lateral sclerosis, 5 Lewy body dementia, 46 Parkinson's disease, and 9 Progressive supranuclear palsy target genes passing multiple test corrections (pSMR_multi < 2.95×10-6 and pHEIDI > 0.01). We created a therapeutic scheme to classify our identified target genes into strata based on druggability and approved therapeutics - classifying 41 novel targets, 3 known targets, and 115 difficult targets (of these 69.8% are expressed in the disease relevant cell type from single nucleus experiments). Our novel class of genes provides a springboard for new opportunities in drug discovery, development and repurposing in the pre-competitive space. In addition, looking at drug-gene interaction networks, we identify previous trials that may require further follow-up such as Riluzole in AD. We also provide a user-friendly web platform to help users explore potential therapeutic targets for neurodegenerative diseases, decreasing activation energy for the community [https://nih-card-ndd-smr-home-syboky.streamlit.app/].
Insights
This study identifies novel drug targets for neurodegenerative diseases using genetic data. A new web platform aids researchers in discovering potential therapeutics for conditions like Alzheimer's and Parkinson's.
Area of Science:
- Genetics and bioinformatics
- Neuroscience
- Drug discovery
Background:
- Neurodegenerative disorders urgently require new treatments due to an aging global population.
- Recent FDA approvals for Alzheimer's Disease underscore the importance of biological mechanisms in therapeutic development.
- Existing treatments for neurodegenerative diseases are limited, necessitating novel approaches.
Approach:
- Utilized Summary-data-based Mendelian Randomization (SMR) to identify genetic targets for drug discovery and repurposing.
- Developed an open framework and resource for evidence-based identification of therapeutic targets.
- Provided mechanistic insights into disease processes and network-level consequences of gene-based therapeutics.
Key Points:
- Identified 116 Alzheimer's disease, 3 amyotrophic lateral sclerosis, 5 Lewy body dementia, 46 Parkinson's disease, and 9 Progressive Supranuclear Palsy target genes.
- Classified 41 novel, 3 known, and 115 difficult therapeutic targets based on druggability and existing drugs.
- Highlighted 69.8% of difficult targets expressed in relevant cell types from single-nucleus experiments.
Conclusions:
- The identified novel gene targets offer new opportunities for drug discovery, development, and repurposing.
- Analysis of drug-gene interaction networks suggests further investigation of specific trials, e.g., Riluzole in Alzheimer's Disease.
- A user-friendly web platform is available to facilitate community exploration of therapeutic targets for neurodegenerative diseases.
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