Anti-Hu CD6 Purified Monoclonal Antibody

CD6, also known as T12, is a member of the scavenger receptor superfamily found on T and B cell subsets, thymocytes, and acute lymphocytic leukemia cells (ALL) . CD6 interacts with its ligand CD166/ALCAM (activated leukocyte cell adhesion molecule) and serves as a coreceptor for T cell activation and stabilizer of the immunological synapse. CD6-ALCAM mediated cell adhesion is also important for T cell proliferation. CD6 may exert some its functions via association with CD5, probably by fine-tuning CD5 signaling. Ligation of CD6 has antiapoptotic role in chronic lymphocytic leukemia B cells.

Human CD6 antigen purified by immunoaffinity chromatography from HBP-ALL cells followed by preparative SDS-PAGE of non-boiled non-reduced sample (excised piece of gel corresponding to the 100 kDa zone) . The antibody MEM-98 reacts with an extracellular epitope of CD6, a 100-130 kDa single chain transmembrane glycoprotein expressed on T and B lymphocytes subsets, thymocytes, and acute lymphocytic leukemia cells.

Detected on thymocytes (PubMed:15294938) . Detected on peripheral blood T-cells (PubMed:15048703, PubMed:16352806) . Detected on natural killer (NK) cells (PubMed:16352806) . Soluble CD6 is detected in blood serum (at protein level) (PubMed:17601777) . Detected in spleen, thymus, appendix, lymph node and peripheral blood leukocytes (PubMed:9013954) . Expressed by thymocytes, mature T-cells, a subset of B-cells known as B-1 cells, and by some cells in the brain.

Cell adhesion molecule that mediates cell-cell contacts and regulates T-cell responses via its interaction with ALCAM/CD166 (PubMed:15048703, PubMed:15294938, PubMed:16352806, PubMed:16914752, PubMed:24945728, PubMed:24584089) . Contributes to signaling cascades triggered by activation of the TCR/CD3 complex (PubMed:24584089) . Functions as costimulatory molecule; promotes T-cell activation and proliferation (PubMed:15294938, PubMed:16352806, PubMed:16914752) . Contributes to the formation and maturation of the immunological synapse (PubMed:15294938, PubMed:16352806) . Functions as calcium-dependent pattern receptor that binds and aggregates both Gram-positive and Gram-negative bacteria. Binds both lipopolysaccharide (LPS) from Gram-negative bacteria and lipoteichoic acid from Gram-positive bacteria (PubMed:17601777) . LPS binding leads to the activation of signaling cascades and down-stream MAP kinases (PubMed:17601777) . Mediates activation of the inflammatory response and the secretion of pro-inflammatory cytokines in response to LPS (PubMed:17601777) .