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- W1990385730 abstract "Abstract Both CD4+ T cells and macrophages are major reservoirs of HIV-1. Previous study showed that HIV-1–specific cytolytic T lymphocytes (CTLs) hardly recognize HIV-1–infected CD4+ T cells because of Nef-mediated HLA class I down-regulation, suggesting that HIV-1 escapes from HIV-1–specific CTLs and continues to replicate in HIV-1–infected donors. On the other hand, the CTL recognition of HIV-1–infected macrophages and the effect of Nef-mediated HLA class I down-regulation on this recognition still remain unclear. We show a strong HIV-1 antigen presentation by HIV-1–infected macrophages. HIV-1–specific CTLs had strong abilities to suppress HIV-1R5 virus replication in HIV-1–infected macrophages and to kill HIV-1R5–infected macrophages. Nef-mediated HLA class I down-regulation minimally influenced the recognition of HIV-1–infected macrophages by HIV-1–specific CTLs. In addition, HIV-1–infected macrophages had a stronger ability to stimulate the proliferation of HIV-1–specific CTLs than HIV-1–infected CD4+ T cells. Thus, the effect of Nef-mediated HLA class I down-regulation was less critical with respect to the recognition by HIV-1–specific CTLs of HIV-infected macrophages than that of HIV-1–infected CD4+ T cells. These findings support the idea that the strong HIV-1 antigen presentation by HIV-1–infected macrophages is one of the mechanisms mediating effective induction of HIV-1–specific CTLs in the acute and early chronic phases of HIV-1 infection." @default.
- W1990385730 created "2016-06-24" @default.
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- W1990385730 creator A5078546233 @default.
- W1990385730 date "2007-06-01" @default.
- W1990385730 modified "2023-09-30" @default.
- W1990385730 title "HIV-1–specific CTLs effectively suppress replication of HIV-1 in HIV-1–infected macrophages" @default.
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- W1990385730 doi "https://doi.org/10.1182/blood-2006-07-037481" @default.
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