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  • HIV-1 entry into CD4+ cells is mediated by the chemokine receptor CC-CKR-5.

HIV-1 entry into CD4+ cells is mediated by the chemokine receptor CC-CKR-5.

Nature (1996-06-20)
T Dragic, V Litwin, G P Allaway, S R Martin, Y Huang, K A Nagashima, C Cayanan, P J Maddon, R A Koup, J P Moore, W A Paxton
PMID8649512
ABSTRACT

The beta-chemokines MIP-1alpha, MIP-1beta and RANTES inhibit infection of CD4+ T cells by primary, non-syncytium-inducing (NSI) HIV-1 strains at the virus entry stage, and also block env-mediated cell-cell membrane fusion. CD4+ T cells from some HIV-1-exposed uninfected individuals cannot fuse with NSI HIV-1 strains and secrete high levels of beta-chemokines. Expression of the beta-chemokine receptor CC-CKR-5 in CD4+, non-permissive human and non-human cells renders them susceptible to infection by NSI strains, and allows env-mediated membrane fusion. CC-CKR-5 is a second receptor for NSI primary viruses.