Article Dans Une Revue Clinical Immunology Année : 2007

HIV-1 immunopathogenesis: How good interferon turns bad

Résumé

The hallmark of acquired immunodeficiency syndrome (AIDS) is the progressive loss of CD4+ T cells that results from infection with human immunodeficiency virus type-1 (HIV-1). Despite 25 years of AIDS research, questions remain concerning the mechanisms responsible for HIV-induced CD4+ T cell depletion. Here we briefly review the in vitro and in vivo literature concerning the protective role of interferon-alpha (IFN-alpha) in HIV/AIDS. We then develop a laboratory- and clinically supported model of CD4+ T cell apoptosis in which either infectious or noninfectious HIV-1 induces the production of type I interferon by plasmacytoid dendritic cells (pDC). The interferon produced binds to its receptor on primary CD4+ T cells resulting in membrane expression of the TNF-related apoptosis-inducing ligand (TRAIL) death molecule. The binding of infectious or noninfectious HIV-1 to CD4 on these T cells results in expression of the TRAIL death receptor 5 (DR5), leading to the selective death of HIV-exposed CD4+ T cells.

Dates et versions

hal-04204725 , version 1 (12-09-2023)

Identifiants

Citer

Jean-Philippe Herbeuval, Gene Shearer. HIV-1 immunopathogenesis: How good interferon turns bad. Clinical Immunology, 2007, 123 (2), pp.121-128. ⟨10.1016/j.clim.2006.09.016⟩. ⟨hal-04204725⟩
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