This is the blog for GW students taking Human Evolutionary Genetics. This site is for posting interesting tidbits on: the patterns and processes of human genetic variation;human origins and migration; molecular adaptations to environment, lifestyle and disease; ancient and forensic DNA analyses; and genealogical reconstructions.

GWHEG figure

GWHEG figure

Monday, April 13, 2020

Evolutionary Medicine of Retroviruses in the Human Genome


Interest in virology has increased significantly due to recent circumstances. While this interest is specifically focused on COVID-19, readers should also revisit a recent review of evolutionary medicine of retroviruses in humans by Katsura and Asai (2019). Approximately, 5-8% of the human genome is comprised on endogenous retroviruses (HERVs) from viral sequences (resembling infectious retroviruses). Katsura and Asai emphasize the importance of understanding these retroviruses in preventing or reducing the effects of disease. For instance, abnormal expression of HERVs could be linked to multiple sclerosis. They also highlight that retroviral sequences can serve as transcription factors and specify sites for alternative splicing of transcripts. Katsura and Asai conclude that further studies of HERVs and modern infectious retroviruses must be conducted before we can develop finer-scale interpretations of their roles and use of them clinically.

Joshua Porter – 04/14/2020 Potluck

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