Dendritic cell and antigen dispersal landscapes regulate T cell immunity.

ABSTRACT: Dendritic cell (DC) subsets with biased capacity for CD4⁺ and CD8⁺ T cell activation are asymmetrically distributed in lymph nodes (LNs), but how this affects adaptive responses has not been extensively studied. Here we used quantitative imaging to examine the relationships among antigen dispersal, DC positioning, and T cell activation after protein immunization. Antigens rapidly drained into LNs and formed gradients extending from the lymphatic sinuses, with reduced abundance in the deep LN paracortex. Differential localization of DCs specialized for major histocompatibility complex I (MHC I) and MHC II presentation resulted in preferential activation of CD8⁺ and CD4⁺ T cells within distinct LN regions. Because MHC I-specialized DCs are position

SUBMITTER: Gerner MY 

PROVIDER: S-EPMC5626399 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature