Enhancing immune responses to limit chronic immune activation during SIV

Research output: Contribution to journalComment/debatepeer-review

6 Scopus citations


The persistent immune activation that is typical of HIV-1 and SIV infection results in exhaustion and dysfunction of T and B cells; in T cells, this is marked by increased expression and signaling through the inhibitory receptor programmed death-1 (PD-1). Targeting this exhaustion pathway could result in improved antiviral immune responses, but there have been concerns that it would also lead to increased inflammation and immunopathology. In this issue of the JCI, Dyavar Shetty et al. demonstrate that blocking PD-1 actually reduced proinflammatory responses and improved immunity in the gut of SIV-infected rhesus macaques, suggesting that this might have therapeutic potential to prevent opportunistic infections in HIV-infected patients.

Original languageEnglish (US)
Pages (from-to)1611-1614
Number of pages4
JournalJournal of Clinical Investigation
Issue number5
StatePublished - May 1 2012
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)


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