T cell receptor recognizing HIV-1 gp140-derived peptides presented by MHC (HIV-1 gp140-specific TCR)

The T cell receptor (TCR) recognizing HIV-1 gp140-derived peptides presented by the Major Histocompatibility Complex (MHC) is a critical component of the adaptive immune response against HIV-1. These receptors are typically found on CD8+ cytotoxic T lymphocytes and are responsible for identifying cells that have been infected by the virus by binding to specific viral fragments displayed on the cell surface. In the context of HIV-1, the gp140 protein is a soluble trimeric form of the envelope glycoprotein (Env) that contains important epitopes for both neutralizing antibodies and T cell recognition. Therapeutic strategies often involve engineering patient T cells to express high-affinity TCRs specific for these gp140 epitopes to enhance the clearance of infected cells. However, the high mutation rate of HIV-1 and the virus's ability to downregulate MHC molecules present significant challenges to the sustained efficacy of TCR-based therapies. Understanding the structural basis of this TCR-peptide-MHC interaction is essential for developing effective vaccines and T cell-based immunotherapies aimed at achieving a functional cure for HIV.

Other names

HIV-1 envelope-specific T cell receptorgp140-specific TCRHIV-1 Env-specific TCRTCR recognizing HIV-1 gp140/MHC complex

Engineered T cells expressing these receptors recognize specific HIV-1 gp140 peptide-MHC complexes on the surface of infected cells, leading to targeted killing of the reservoir and suppression of viral replication.