Human B-cell receptor (BCR) recognizing HPV6 L1 conformational epitopes (HPV6 L1-specific BCR)

Human B-cell receptors (BCRs) recognizing HPV6 L1 conformational epitopes are specialized transmembrane proteins located on the surface of B lymphocytes that specifically bind to the major capsid protein (L1) of Human Papillomavirus type 6 (HPV6). These receptors are critical for the immune system's ability to detect and respond to HPV6, a low-risk virus primarily responsible for genital warts and recurrent respiratory papillomatosis (Guan et al., 2021). The BCRs recognize complex, three-dimensional structural motifs known as conformational epitopes on the L1 protein, which are essential for the induction of neutralizing antibodies. Upon binding to these epitopes, typically presented by virus-like particles (VLPs) in prophylactic vaccines, the BCR initiates intracellular signaling that leads to B-cell activation, proliferation, and differentiation into antibody-secreting plasma cells and long-lived memory B cells. This interaction is the primary mechanism of action for vaccines like Gardasil and Gardasil 9, which aim to elicit a robust and long-lasting immune response to prevent infection. Research into these receptors has provided structural insights into how the immune system neutralizes HPV6, facilitating the development of more effective vaccines and potential therapeutic monoclonal antibodies (Guan et al., 2021; Nishioka et al., 2021).

Other names

HPV6 L1-specific B-cell receptorAnti-HPV6 L1 BCRB-cell receptor for HPV6 L1 major capsid proteinHuman B-cell receptor recognizing HPV6 L1

Vaccine-derived virus-like particles (VLPs) bind to and cross-link these BCRs to trigger B-cell activation, clonal expansion, and differentiation into plasma cells and memory B cells.