Cutting edge: Helminth coinfection blocks effector differentiation of CD8 T cells through alternate host Th2- and IL-10-Mediated Responses

Andrew Marple, Wenhui Wu, Suhagi Shah, Yanlin Zhao, Peicheng Du, William C. Gause, George S. Yap

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Concurrent helminth infection potently inhibits T cell immunity; however, whether helminthes prevent T cell priming or skew clonal recruitment and effector differentiation is not known. Using coinfection with two natural mouse pathogens, Heligsomosoides polygyrus and Toxoplasma gondii, to investigate the negative impact of helminthes on the CD8 T cell response, we demonstrate helminth-induced suppression of IL-12-dependent differentiation of killer-like receptor G1+ effector CD8 T cells and IFN-g production. Nevertheless, reversal of helminth suppression of the innate IL-12 response of CD8a+ dendritic cells, which occurred in STAT6- deficient mice, was not sufficient to normalize CD8 T cell differentiation. Instead, a combined deficiency in IL-4 and IL-10 was required to reverse the negative effects of helminth coinfection on the CD8 T cell response. Monoclonal T. gondii-specific CD8 T cells adoptively transferred into coinfected mice recapitulated the spectrum of helminth-induced effects on the polyclonal CD8 T response, indicating the lack of requirement for clonal skewing.

Original languageEnglish (US)
Pages (from-to)634-639
Number of pages6
JournalJournal of Immunology
Volume198
Issue number2
DOIs
StatePublished - Jan 15 2017

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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