T-cell receptor (TCR) specific for poliovirus-derived peptides (Poliovirus-specific TCR)

T-cell receptors (TCRs) specific for poliovirus-derived peptides are critical components of the adaptive immune system's defense against poliovirus infection. These receptors, typically composed of alpha and beta polypeptide chains, reside on the surface of T lymphocytes and are specialized to recognize viral fragments presented by Major Histocompatibility Complex (MHC) molecules. TCRs on CD8+ T cells interact with MHC Class I-presented peptides to induce the direct killing of poliovirus-infected cells, while TCRs on CD4+ T cells interact with MHC Class II-presented peptides to coordinate the broader immune response, including B-cell activation for antibody production. In the context of vaccination, such as with the Salk (IPV) or Sabin (OPV) vaccines, the primary goal is to prime these specific TCR-bearing T cells to provide long-lasting immunological memory. Research into these receptors is vital for understanding vaccine efficacy and developing therapeutic strategies for enteroviral infections, particularly in populations with waning immunity or those at risk of vaccine-derived paralytic poliomyelitis.

Other names

Poliovirus-reactive T-cell receptorPV-specific TCRT-cell antigen receptorMHC-restricted poliovirus-specific TCR

Recognition of specific poliovirus-derived peptides (antigens) presented by Major Histocompatibility Complex (MHC) Class I or Class II molecules, triggering T-cell activation, proliferation, and effector functions such as the lysis of infected cells or the secretion of pro-inflammatory cytokines.