Priya, RajBrutkiewicz, Randy R.2023-04-122023-04-122020-12-15Priya R, Brutkiewicz RR. Brain astrocytes and microglia express functional MR1 molecules that present microbial antigens to mucosal-associated invariant T (MAIT) cells. J Neuroimmunol. 2020;349:577428. doi:10.1016/j.jneuroim.2020.577428https://hdl.handle.net/1805/32349It is unknown whether brain astrocytes and microglia have the capacity to present microbial antigens via the innate immune MR1/MAIT cell axis. We have detected MAIT cells in the normal mouse brain and found that both astrocytes and microglia are MR1+. When we stimulated brain astrocytes and microglia with E. coli, and then co-cultured them with MAIT cells, MR1 surface expression was upregulated and MAIT cells were activated in an antigen-dependent manner. Considering the association of MAIT cells with inflammatory conditions, including those in the CNS, the MR1/MAIT cell axis could be a novel therapeutic target in neuroinflammatory disorders.en-USPublisher PolicyAntigen presentationAstrocytesInnate immunityMAIT cellsMicrogliaArticle