Pyruvate dehydrogenase E2 component-specific T cell (PDC-E2-specific T cell)

PDC-E2-specific T cells are not a molecular target such as an enzyme, receptor, or transporter, but rather a subset of T lymphocytes (CD4^+ or CD8^+) whose antigen specificity is directed toward the E2 component of the pyruvate dehydrogenase complex (PDC-E2). These autoreactive T cells are implicated in the pathogenesis of primary biliary cholangitis (PBC), an autoimmune liver disease. PDC-E2 is the major mitochondrial autoantigen recognized by antimitochondrial antibodies and autoreactive T cells in PBC patients. The presence of these T cells suggests a focused autoimmune response, with both CD4^+ and CD8^+ T cells found enriched in liver tissue, specifically targeting biliary epithelial cells and contributing to their destruction. PDC-E2-specific T cells are therefore best described as disease-relevant immune cell populations, and not as single defined molecular targets for conventional drug discovery[1][3][5].

Other names

PDC-E2-reactive T cellPyruvate dehydrogenase complex E2-specific T cell