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CD301b+ dendritic cells stimulate tissue-resident memory CD8+ T cells to protect against genital HSV-2

Author

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  • Haina Shin

    (Yale University School of Medicine
    Present address: Department of Medicine, Division of Infectious Diseases, Washington University School of Medicine, St Louis, Missouri 63110, USA)

  • Yosuke Kumamoto

    (Yale University School of Medicine)

  • Smita Gopinath

    (Yale University School of Medicine)

  • Akiko Iwasaki

    (Yale University School of Medicine
    Howard Hughes Medical Institute, Yale University School of Medicine)

Abstract

Tissue-resident memory CD8+ T (CD8 TRM) cells are an essential component of protective immune responses at barrier tissues, including the female genital tract. However, the mechanisms that lead to the initiation of CD8 TRM-mediated protective immunity after viral infection are unclear. Here we report that CD8 TRM cells established by ‘prime and pull’ method confer protection against genital HSV-2 infection, and that IFN-γ produced by CD8 TRM cells is required for this protection. Furthermore, we find that CD8 TRM-cell restimulation depends on a population of CD301b+ antigen-presenting cells (APC) in the lamina propria. Elimination of MHC class I on CD301b+ dendritic cells abrogates protective immunity, suggesting the requirement for cognate antigen presentation to CD8 TRM cells by CD301b+ dendritic cells. These results define the requirements for CD8 TRM cells in protection against genital HSV-2 infection and identify the population of APC that are responsible for activating these cells.

Suggested Citation

  • Haina Shin & Yosuke Kumamoto & Smita Gopinath & Akiko Iwasaki, 2016. "CD301b+ dendritic cells stimulate tissue-resident memory CD8+ T cells to protect against genital HSV-2," Nature Communications, Nature, vol. 7(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13346
    DOI: 10.1038/ncomms13346
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