CD1-mediated Gamma/delta T Cell Maturation of Dendritic Cells
Overview
General Medicine
Authors
Affiliations
Immature myeloid dendritic cells (DCs) express only low levels of major histocompatibility complex (MHC) class II but express high levels of CD1 a, b, and c antigen-presenting molecules at the cell surface. As Vdelta1+ gamma/delta T cells are the main tissue subset of gamma/delta T cells and they are known to recognize CD1c in the absence of specific foreign antigen recognition, we examined the possible interaction of these T cells with immature DCs. We show that CD1-restricted gamma/delta T cells can mediate the maturation of DCs. DC maturation required cell-cell contact and could be blocked by antibodies against CD1c. The maturation process was partially mediated by tumor necrosis factor alpha. Importantly, immature DCs matured in the presence of lipopolysaccharide and CD1-restricted gamma/delta T cells produced bioactive interleukin-12p70. In addition, these DCs were able to efficiently present peptide antigens to naive CD4+ T cells. CD1-restricted gamma/delta T cell recognition of immature DCs provides the human immune system with the capacity to rapidly generate a pool of mature DCs early during microbial invasion. This may be an important source of critical host signals for T helper type 1 polarization of antigen-specific naive T cells and the subsequent adaptive immune response.
Wei X, Tan Y, Zhou G Inflamm Res. 2024; 73(5):867-876.
PMID: 38563967 DOI: 10.1007/s00011-024-01870-z.
From Host Defense to Metabolic Signatures: Unveiling the Role of γδ T Cells in Bacterial Infections.
Nanda N, Alphonse M Biomolecules. 2024; 14(2).
PMID: 38397462 PMC: 10886488. DOI: 10.3390/biom14020225.
IL-22 Binding Protein Controls IL-22-Driven Bleomycin-Induced Lung Injury.
Zhang Z, Chakawa M, Galeas-Pena M, Frydman J, Allen M, Jones M Am J Pathol. 2023; 194(3):338-352.
PMID: 38101567 PMC: 10913761. DOI: 10.1016/j.ajpath.2023.11.011.
γδ T Cells in the Tumor Microenvironment-Interactions With Other Immune Cells.
Chan K, Duarte J, Ostrouska S, Behren A Front Immunol. 2022; 13:894315.
PMID: 35880177 PMC: 9307934. DOI: 10.3389/fimmu.2022.894315.
SARS-CoV-2 spike and nucleocapsid proteins fail to activate human dendritic cells or γδ T cells.
Singh K, Cogan S, Elekes S, Murphy D, Cummins S, Curran R PLoS One. 2022; 17(7):e0271463.
PMID: 35834480 PMC: 9282473. DOI: 10.1371/journal.pone.0271463.