HIV-1 Gag-specific B cell receptors and T cell receptors (HIV-1 Gag BCR/TCR)

HIV-1 Gag-specific B cell receptors (BCRs) and T cell receptors (TCRs) are the primary adaptive immune sensors that recognize the Gag polyprotein of Human Immunodeficiency Virus type 1 [1]. Gag is a highly conserved structural protein, essential for viral assembly and maturation, which makes it a more stable target for the immune system than the highly variable envelope proteins [1, 2]. TCRs recognize Gag-derived peptides presented by Major Histocompatibility Complex (MHC) molecules on the surface of infected cells, triggering the destruction of these cells by cytotoxic T lymphocytes [2, 4]. BCRs and their secreted antibodies recognize Gag components like p24 and p17, contributing to immune monitoring and potentially mediating antibody-dependent cellular cytotoxicity (ADCC) [3]. These receptors are currently being utilized in the development of adoptive cell therapies, such as TCR-engineered T cells, and are the focus of vaccine strategies designed to elicit broad and potent anti-HIV immune responses [4]. Sources: [1] UniProt Consortium, "Gag polyprotein - HIV-1," P04591. [2] Walker, B. D., & Yu, X. G. (2013), "Antiviral T cell responses in HIV-1 infection," Nature Reviews Immunology. [3] Kanekiyo, M., et al. (2014), "Rational Design of Antigen-Presenting Particles for HIV-1 Vaccine," Cell. [4] Kitchen, S. G., et al. (2012), "Engineering Antigen-Specific T Cells from Stem Cells to Fight HIV," PLoS Pathogens.

Other names

Anti-Gag immune receptorsGag-specific BCRsGag-specific TCRsHIV-1 Gag-specific antibodiesAnti-p24 receptors

Recognition of Gag epitopes on infected cells leading to immune-mediated destruction and viral suppression [2, 4].