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Specialized dendritic cells induce tumor-promoting IL-10+IL-17+ FoxP3 neg regulatory CD4+ T cells in pancreatic carcinoma

  • Rocky M. Barilla
  • , Brian Diskin
  • , Raul Caso Caso
  • , Ki Buom Lee
  • , Navyatha Mohan
  • , Chandan Buttar
  • , Salma Adam
  • , Zennur Sekendiz
  • , Junjie Wang
  • , Ruben D. Salas
  • , Marcelo F. Cassini
  • , Jason Karlen
  • , Belen Sundberg
  • , Hashem Akbar
  • , Dmitry Levchenko
  • , Inderdeep Gakhal
  • , Johana Gutierrez
  • , Wei Wang
  • , Mautin Hundeyin
  • , Alejandro Torres-Hernandez
  • Joshua Leinwand, Emma Kurz, Juan A.Kochen Rossi, Ankita Mishra, Miguel Liria, Gustavo Sanchez, Jyoti Panta, P’ng Loke, Berk Aykut, George Miller

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

The drivers and the specification of CD4+ T cell differentiation in the tumor microenvironment and their contributions to tumor immunity or tolerance are incompletely understood. Using models of pancreatic ductal adenocarcinoma (PDA), we show that a distinct subset of tumor-infiltrating dendritic cells (DC) promotes PDA growth by directing a unique TH-program. Specifically, CD11b+CD103 DC predominate in PDA, express high IL-23 and TGF-β, and induce FoxP3neg tumor-promoting IL-10+IL-17+IFNγ+regulatory CD4+ T cells. The balance between this distinctive TH program and canonical FoxP3+TREGS is unaffected by pattern recognition receptor ligation and is modulated by DC expression of retinoic acid. This TH-signature is mimicked in human PDA where it is associated with immune-tolerance and diminished patient survival. Our data suggest that CD11b+CD103 DC promote CD4+ T cell tolerance in PDA which may underscore its resistance to immunotherapy.

Original languageEnglish
Article number1424
JournalNature Communications
Volume10
Issue number1
DOIs
StatePublished - 1 Dec 2019
Externally publishedYes

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