Mosquito salivary protein-specific B-cell receptor (MSP-specific BCR)

Mosquito salivary protein-specific B-cell receptors (BCRs) are membrane-bound immunoglobulins on human B lymphocytes that recognize proteins in mosquito saliva, such as D7, aegyptin, and apyrase (Ribeiro & Francischetti, 2003). These receptors are central to the human immune response to mosquito bites, mediating the production of IgE and IgG antibodies that drive hypersensitivity reactions, including the severe local reaction known as Skeeter syndrome (Simons & Peng, 1999). Beyond their role in allergy, these BCRs are significant in the context of infectious diseases, as mosquito saliva contains immunomodulatory factors that can facilitate the transmission and establishment of pathogens like Dengue virus, Zika virus, and Plasmodium parasites (Schneider & Higgs, 2008). Therapeutic interest in these receptors focuses on the development of allergen-specific immunotherapies to desensitize individuals with severe allergies and the creation of vaccines, such as AGS-v, that target salivary proteins to disrupt the pathogen's ability to infect the host (Manning et al., 2018). The activation of B cells via these BCRs leads to clonal expansion and the secretion of antibodies that can either neutralize salivary components or, in some cases, inadvertently assist in pathogen entry (Titus et al., 2006). Understanding the specificity and signaling of these receptors is therefore crucial for managing mosquito-borne illnesses and allergic conditions.

Other names

Mosquito saliva-specific B-cell receptorAnti-mosquito saliva B-cell receptorSalivary gland protein-specific BCR

Antigen-induced B-cell receptor cross-linking and activation leading to intracellular signaling via the Ig-alpha/Ig-beta complex, resulting in B-cell proliferation and antibody isotype switching.