Activation of p53 in Immature Myeloid Precursor Cells Controls Differentiation into Ly6c⁺CD103⁺ Monocytic Antigen-Presenting Cells in Tumors.

ABSTRACT: CD103⁺ dendritic cells are critical for cross-presentation of tumor antigens. Here we have shown that during immunotherapy, large numbers of cells expressing CD103 arose in murine tumors via direct differentiation of Ly6c⁺ monocytic precursors. These Ly6c⁺CD103⁺ cells could derive from bone-marrow monocytic progenitors (cMoPs) or from peripheral cells present within the myeloid-derived suppressor cell (MDSC) population. Differentiation was controlled by inflammation-induced activation of the transcription factor p53, which drove upregulation of Batf3 and acquisition of the Ly6c⁺CD103⁺ phenotype. Mice with a targeted deletion of p53 in myeloid cells selectively lost the Ly6c⁺CD103⁺ population and became

SUBMITTER: Sharma MD 

PROVIDER: S-EPMC6005382 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature