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Stem-cell Based Engineered Immunity Against HIV Infection in the Humanized Mouse Model
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Published on: July 2, 2016

New therapy to revert dysfunctional antibody responses during HIV-1 infection

Francesca Chiodi1

  • 1Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden. francesca.chiodi@ki.se

The Journal of Clinical Investigation
|October 26, 2010
PubMed

Individuals infected with HIV-1 progress to AIDS at different rates. Rapid progressors develop AIDS within 2-5 years of initial infection, compared with approximately 10 years in typical progressors. Progression to AIDS is associated with impaired humoral and cellular immunity. In this issue of the JCI, Titanji and colleagues report that activated memory B (mBAct) cells are depleted in SIV-infected macaques defined as rapid progressors. Depletion was mediated by programmed death-1 (PD-1) and resulted in reduction of antibody titers specific for SIV and bacterial antigens. Interestingly, blockade of PD-1 in infected animals protected B cells from apoptosis and increased levels of SIV-specific antibodies in blood. These findings pave the way for a new therapeutic strategy aimed at improving humoral immunity in HIV-1 infection.

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