A 6-amino acid insertion/deletion polymorphism in the mucin domain of TIM-1 confers protections against HIV-1 infection

Mara Biasin, Manuela Sironi, Irma Saulle, Chiara Pontremoli, Micaela Garziano, Rachele Cagliani, Daria Trabattoni, Sergio Lo Caputo, Francesca Vichi, Francesco Mazzotta, Diego Forni, Stefania Riva, Wbeimar Aguilar-Jimenez, Samandhy Cedeño, Jorge Sanchez, Christian Brander, Wildeman Zapata, Maria Teresa Rugeles, Mario Clerici

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    Resum

    © 2016 Institut Pasteur We investigated whether a 6-amino acid insertion/deletion polymorphism in the mucin domain of TIM-1 (T-cell immunoglobulin and mucin domain 1), modulates susceptibility to HIV-1 infection. The polymorphism was genotyped in three case/control cohorts of HIV-1 exposed seronegative individuals (HESN) and HIV-1 infected subjects from Italy, Peru, and Colombia; data from a Thai population were retrieved from the literature. Across all cohorts, homozygosity for the short TIM-1 allele was more common in HESNs than in HIV-1 infected subjects. A meta-analysis of the four association analyses yielded a p value of 0.005. In vitro infection assays of CD4+ T lymphocytes indicated that homozygosity for the short allele is associated with lower rate of HIV-1 replication. These results suggest that the deletion allele protects from HIV-1 infection with a recessive effect.
    Idioma originalAnglès
    Pàgines (de-a)69-74
    RevistaMicrobes and Infection
    Volum19
    Número1
    DOIs
    Estat de la publicacióPublicada - 1 de gen. 2017

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