Donald Van Ryk, Sinmanus Vimonpatranon, Joe Hiatt, Sundar Ganesan, Nathalie Chen, Jordan McMurry, Saadiq Garba, Susie Min, Livia R Goes, Alexandre Girard, Jason Yolitz, Isabella Licavoli, Danlan Wei, Dawei Huang, Marcelo A Soares, Elena Martinelli, Claudia Cicala, James Arthos
The CD4 receptor, by stabilizing TCR-MHC II interactions, plays a central role in adaptive immunity. It also serves as the HIV docking receptor. The HIV gp120 envelope protein binds directly to CD4. This interaction is a prerequisite for viral entry. gp120 also binds to ⍺4β7, an integrin that is expressed on a subset of memory CD4+ T cells. HIV tropisms for CD4+ T cells and gut tissues are central features of HIV pathogenesis. We report that CD4 binds directly to ⍺4β7 in a dynamic way, consistent with a cis regulatory interaction...
December 8, 2023: PLoS Pathogens