Decoding the Formation and Degeneration of Neural Circuits via Cell-Type-Specific Surface Proteomics

2024 Seed Grant
Yi-Rong Peng, Ph.D.
University of California, Los Angeles

The nervous system’s complex structure is created by precise connections among many types of cells. Neurodegenerative diseases disrupt these connections, leading to permanent neuron loss and the formation of abnormal connections among surviving neurons. This impairs the function of the remaining neural circuits and hinders the integration of new neurons from stem cells into the damaged areas. These connections are formed by recognition molecules on cell membranes, so this project aims to develop a method to study these membrane proteins in different neuron types during both development and degeneration. Understanding these mechanisms could lead to new treatments for neurodegenerative diseases.

We are focusing on the mammalian retina, which is known for its organized connections and important role in vision. We plan to use advanced techniques to profile specific membrane proteins in various retinal cell types during their development and degeneration. By using machine learning, computational analysis, CRISPR gene manipulation, and high-resolution imaging, we aim to identify key molecular pathways involved in these processes. The methods and insights from studying the retina could be applied to other parts of the nervous system, potentially offering broader implications for understanding and treating neurodegenerative diseases.

Other Grants

José Manuel Baizabal Carballo, Ph.D., Indiana University Bloomington
Heterochromatin Mechanisms of Cortical Expansion
Neurodevelopmental disorders, such as autism and schizophrenia, are frequently associated with mutations in genes that encode chromatin-modifying enzymes. A subset of these mutations is thought to disrupt compacted chromatin (heterochromatin),…
Jessica L. Bolton, Ph.D., Georgia State University
Chemogenetic Tools in Microglia as a Novel Therapeutic Approach for Brain Disorders
All humans are born with a unique combination of genes, which contribute greatly to who we are. However, early-life experiences such as trauma or hardship, particularly during the first few…
Junyue Cao, Ph.D., The Rockefeller University
Elucidate the Molecular and Cellular Targets of Caloric Restriction in Rejuvenating Aged Mammalian Brain
As we age, the brain’s ability to function declines, increasing the risk of cognitive impairments and neurological diseases like Alzheimer’s and Parkinson’s. Our research investigates how caloric restriction (CR), a…
Vasileios Christopoulos, Ph.D., University of Southern California
Understanding the Mechanisms of Micturition in the Brain and Spinal Cord
This research aims to better understand how the brain and spinal cord work together to control urination, a process known as micturition. In healthy individuals, this process is carefully coordinated…