Tumor-Residing Batf3 Dendritic Cells Are Required for Effector T Cell Trafficking and Adoptive T Cell Therapy.

ABSTRACT: Effector T cells have the capability of recognizing and killing cancer cells. However, whether tumors can become immune resistant through exclusion of effector T cells from the tumor microenvironment is not known. By using a tumor model resembling non-T cell-inflamed human tumors, we assessed whether adoptive T cell transfer might overcome failed spontaneous priming. Flow cytometric assays combined with intra-vital imaging indicated failed trafficking of effector T cells into tumors. Mechanistically, this was due to the absence of CXCL9/10, which we found to be produced by CD103⁺ dendritic cells (DCs) in T cell-inflamed tumors. Our data indicate that lack of CD103⁺ DCs within the tumor microenvironment dominantly resists the effector phase of an anti-tumor T cell resp

SUBMITTER: Spranger S 

PROVIDER: S-EPMC5650691 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature