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- W1891279436 abstract "HIV-1 is mainly a sexually transmitted infection, and epithelial surfaces covering genital mucosa are the primary site of HIV-1 transmission. Although male circumcision was reported to reduce male acquisition of HIV-1 by 60%, the initial mechanisms of HIV-1 transmission in the male genitals remain elusive. We established two novel models of the adult human foreskin epithelium that allowed for polarized infection via the mucosal pole with either HIV-1-infected cells that are present in all secretions vectorizing HIV-1 or cell-free HIV-1. Efficient HIV-1 transmission occurs following 1 hr of polarized exposure of the inner, but not outer, foreskin to mononuclear cells highly infected with HIV-1, but not to cell-free virus. HIV-1-infected cells form viral synapses with apical foreskin keratinocytes, leading to polarized budding of HIV-1, which is rapidly internalized by Langerhans cells (LCs) in the inner foreskin. In turn, LCs form conjugates with T-cells, thereby transferring HIV-1. Seminal plasma from HIV-negative men mixed with cervico-vaginal secretions from HIV-positive women, which mimics the in-vivo mixture of these genital fluids during woman-to-man HIV-1 sexual transmission, decreases HIV-1 infection at the foreskin. Our results rationalize at the cellular level the apparent protective outcome of circumcision against HIV-1 acquisition by men." @default.
- W1891279436 created "2016-06-24" @default.
- W1891279436 creator A5010855767 @default.
- W1891279436 creator A5030948367 @default.
- W1891279436 date "2010-11-28" @default.
- W1891279436 modified "2023-10-01" @default.
- W1891279436 title "HIV-1 Transmission in the Male Genital Tract" @default.
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- W1891279436 doi "https://doi.org/10.1111/j.1600-0897.2010.00933.x" @default.
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