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2012-A-007-FEL - Abstract

Grant Information

Aging - Fellowship
Investigation of cylindrin as a candidate structure for toxic amyloid oligomers
Rebecca Nelson, PhD
Institute for Genomics and Proteomics
Funding Status
  • Completed
  • 3 years, $60,000 per year
  • 10/1/2012 to 9/30/2015


2012-A-007-FEL - Abstract
Brief Summary
"Investigation of Cylindrin as a Candidate Structure for Toxic Amyloid Oligomers"

In my work, I hope to clarify the nature of the causative molecular agent of Alzheimer’s and related diseases. Alzheimer’s is one of several diseases that seem to be caused by small, soluble clusters of protein called ‘amyloid oligomers.’ Alzheimer’s can potentially be treated by blocking the toxicity of the amyloid oligomers. However, designing such an inhibitory drug requires a detailed understanding of the atomic structure and properties of amyloid oligomers.

This understanding has been difficult to obtain, because the amyloid oligomers are polymorphic – they come in varying shapes – and short-lived – they change quickly into different, usually larger structures. Nevertheless, my lab has determined the structure of an amyloid oligomer not involved in disease, and I am working to relate this structure to the amyloid oligomers of diseases, such as Alzheimer’s, Parkinson’s, type 2 diabetes, ALS, and the prion diseases. For each disease, I have identified regions of the protein that match features of the known amyloid oligomer structure.

By studying these protein regions in isolation, we can see if they too behave like amyloid oligomers: Do they cluster? Do they kill cells? Do they form a similar structure? When we observe the structure of a disease-related amyloid oligomer, even if it is formed from only part of the disease protein, we can begin to design compounds to block its toxic action.

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