The ectodomain sheddase ADAM10 restricts HIV-1 propagation and is counteracted by Nef.

ABSTRACT: HIV-1 Nef enhances virus propagation by down-regulating CD4 and SERINC5. However, recent evidence points to the existence of an additional Nef-sensitive restriction mechanism. We now show that Nef suppresses the aberrant cleavage of HIV-1 gp41 by ADAM10, a virion-associated cellular ectodomain sheddase, and thus increases the amount of HIV-1 envelope glycoprotein (Env) on virions. Additionally, Nef inhibits the shedding of at least some cellular ADAM10 substrates, resulting in their accumulation on HIV-1 virions. Whereas Nef⁺ HIV-1 replicated only marginally better in the absence of ADAM10, the propagation of Nef^- HIV-1 was notably rescued in ADAM10^- T cell lines. Crucially, Nef^- HIV-1 also benefited from the absence of ADAM10 in primary CD4

SUBMITTER: Olety B 

PROVIDER: S-EPMC12007588 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature