Showing posts with label DNA damage repair. Show all posts
Showing posts with label DNA damage repair. Show all posts

Sunday, November 7, 2021

Spike protein inhibits DNA repair.

from the Abstract

Clinical studies have indicated that patients with severe COVID–19 exhibit delayed and weak adaptive immune responses; however, the mechanism by which SARS–CoV–2 impedes adaptive immunity remains unclear. Here, by using an in vitro cell line, we report that the SARS–CoV–2 spike protein significantly inhibits DNA damage repair, which is required for effective V(D)J recombination in adaptive immunity. Mechanistically, we found that the spike protein localizes in the nucleus and inhibits DNA damage repair by impeding key DNA repair protein BRCA1 and 53BP1 recruitment to the damage site. Our findings reveal a potential molecular mechanism by which the spike protein might impede adaptive immunity and underscore the potential side effects of full-length spike-based vaccines. 

If you'd prefer a short lesson on how this occurs, Dr. Mobeen Seyd provides a great service.