T-cell receptor specific for measles, mumps, and rubella peptide–MHC complexes (MMR-specific TCR)

T-cell receptors (TCRs) specific for measles, mumps, and rubella (MMR) peptide–MHC complexes are specialized surface proteins on T lymphocytes that recognize viral antigens presented by Major Histocompatibility Complex (MHC) molecules (Janeway et al., 2001). These receptors play a critical role in the adaptive immune response by identifying cells infected with the measles, mumps, or rubella viruses (Ovsyannikova et al., 2017). Upon binding to their specific peptide-MHC ligand, these TCRs trigger signal transduction pathways that lead to T-cell proliferation, cytokine production, and the destruction of infected host cells (Niewiesk, 2014). In clinical practice, these TCRs are primarily studied to evaluate the long-term efficacy of MMR vaccinations and to understand the breadth of the cellular immune response (Kennedy et al., 2012). Furthermore, they serve as a template for developing TCR-engineered T-cell therapies, where patient T-cells are modified to express these specific receptors to combat persistent viral infections or related pathologies. Understanding the structural basis of these TCR-pMHC interactions is essential for predicting potential cross-reactivity and ensuring the safety of TCR-based immunotherapies.

Other names

Measles-specific T-cell receptorMumps-specific T-cell receptorRubella-specific T-cell receptorMMR-reactive T-cell receptorsMMR-specific TCRs

Activation of T-cells via TCR-pMHC binding to induce cellular immunity and establish immunological memory against measles, mumps, and rubella viruses.