Invitrogen™ CD366 (TIM3) Monoclonal Antibody (RMT3-23), eBioscience™, Invitrogen™

Description

Description: The RMT3-23 monoclonal antibody reacts with mouse CD366 (TIM3), a Th1-specific cell surface protein. The RMT3-23 antibody reacts with CD366 protein expressed by both BALB/c and C57BL/6 strains of mice. CD366, a type I transmembrane protein, contains an immunoglobulin and a mucin-like domain in its extracellular portion and a tyrosine phosphorylation motif in its cytoplasmic portion. CD366 is expressed selectively by differentiated CD4^+Th1 and CD8^+Tc1 cells, but is absent on CD4^+Th2 and CD8^+Tc2 cells. Other hematopoietic cell types, including naive T cells, B cells, macrophages and dendritic cells, do not express CD366, at least at the protein level. CD366 expression is upregulated at a late stage of T cell differentiation on Th1 cells after 3 rounds of in vitro polarization suggesting a role for this molecule in the transport or effector function of Th1 cells rather than a contribution to T cell differentiation. In an experimental autoimmune encephalomyelitis (EAE) model, CD366 was shown to be expressed on most CD4^+ and CD8^+ T cells in the central nervous system at the onset of clinical signs of disease, while less than 2% of CD4^+ cells in the periphery expressed CD366 after immunization. RMT3-23 has been shown to have functional activity; blocks DC recognition of apoptotic cells and also induces autoantibody production. Applications Reported: This RMT3-23 antibody has been reported for use in flow cytometric analysis.

TIM3 (Hepatitis A virus cellular receptor 2, HAVCR2, T-cell immunoglobulin, mucin-dmain containing-3) is a 281 amino acid long, Type-1 Th1- specific cell surface glycoprotein expressed on terminally differentiated CD4+Th1 and CD8+Tc1 cells. TIM3 consists of an IgV-like domain, a mucin-like domain in the extracellular region, and a conserved Tyrosine phosphorylation motif in the cytoplasmic region. TIM3 is involved in macrophage activation and induction of autoimmune diseases. Further, TIM3 down-regulates aggressive Th1-mediated immune responses and facilitates in the development of immune tolerance. Pathological significance of TIM3 has been attributed to Experimental autoimmune encephalomyelitis (EAE), a Th-1 dependent autoimmune disease, and also enhances the severity of experimental autoimmune encephalomyelitis in mice.