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Group Meeting 15/10/18

Speaker: DENG Lian

Time: 13:00 – 14:00, Oct 15, 2018

Venue: Room 315, SIBS Main Building

Title: Evidence that RNA Viruses Drove Adaptive Introgression between Neanderthals and Modern Humans

Abstract:

Neanderthals and modern humans interbred at least twice in the past 100,000 years. While there is evidence that most introgressed DNA segments from Neanderthals to modern humans were removed by purifying selection, less is known about the adaptive nature of introgressed sequences that were retained. We hypothesized that interbreeding between Neanderthals and modern humans led to (1) the exposure of each species to novel viruses and (2) the exchange of adaptive alleles that provided resistance against these viruses. Here, we find that long, frequent—and more likely adaptive—segments of Neanderthal ancestry in modern humans are enriched for proteins that interact with viruses (VIPs). We found that VIPs that interact specifically with RNA viruses were more likely to belong to introgressed segments in modern Europeans. Our results show that retained segments of Neanderthal ancestry can be used to detect ancient epidemics.
Speaker: XU Wanxing

Time: 14:00 – 15:00, Oct 15, 2018

Venue: Room 315, SIBS Main Building

Topic: Work Report

This post is also available in: Chinese (Simplified)

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