Gastrointestinal MAIT cells in chronic HIV-1 infection.

ABSTRACT: Mucosa-associated invariant T (MAIT) cells are innate-like T cells abundant in mucosal tissues, liver, and blood. MAIT cells recognize riboflavin metabolite-derived microbial antigens displayed by the MHC-I-related protein (MR1) and respond by producing cytokines, killing infected cells, and suppressing microbial growth. We previously demonstrated that MAIT cell numbers and function are reduced in chronic HIV-1, potentially increasing susceptibility to microbial coinfections. Here we assessed colorectal MAIT cells from people living with HIV-1 (PLWH, n = 36) and people without HIV-1 (PWOH, n = 22) by flow cytometry. In PBMCs, MAIT cells were less abundant in PLWH compared to PWOH. However, colorectal MAIT cell percentages were comparable in both groups, suggesting reduced loss from gut com

SUBMITTER: Ferre AL 

PROVIDER: S-EPMC12765499 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature