Viral origins of memory - Jason Shepherd

Clark Center Auditorium
Start:
Thursday, February 20, 2020 12:00 PM
End:
Thursday, February 20, 2020 1:00 PM
Wu Tsai Neurosciences Institute

Wu Tsai Neurosciences Institute Seminar Series Presents

Jason Shepherd, PhD

 

Assistant Professor of Neurobiology and Anatomy,
Biochemistry​ and Ophthalmology & Visual Sciences
University of Utah

Host: Michelle Drews (Shatz Lab)

Abstract

The neuronal gene Arc is essential for long-lasting information storage in the mammalian brain, mediates various forms of synaptic plasticity, including experience-dependent plasticity in the visual cortex. We recently discovered that Arc self-assembles into virus-like capsids that encapsulate RNA. Endogenous Arc protein is released from neurons in extracellular vesicles that mediate the transfer of Arc mRNA into new target cells. Evolutionary analysis indicates that Arc is derived from a vertebrate lineage of Ty3/gypsy retrotransposons, which are also ancestral to retroviruses such as HIV. These findings suggest that Gag retroelements have been repurposed during evolution to mediate intercellular communication in the nervous system.