Detection of TIM‑3 in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) were stained with Rat Anti-Human TIM‑3 Alexa Fluor® 700‑conjugated Monoclonal Antibody (Catalog # FAB2365N) and Mouse Anti-Human CD14 PE‑conjugated Monoclonal Antibody (Catalog # FAB3832P). Quadrant markers were set based on control antibody staining (Catalog # IC006N). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
TIM-3 (T cell immunoglobulin and mucin domain-3) is a 60 kDa member of the TIM family of immune regulating molecules. TIMs are type I transmembrane glycoproteins with one Ig-like V-type domain and a Ser/Thr-rich mucin stalk (1-3). There are three TIM genes in human and eight in mouse. Mature human TIM-3 consists of a 181 amino acid (aa) extracellular domain (ECD), a 21 aa transmembrane segment, and a 78 aa cytoplasmic tail (4). An alternately spliced isoform is truncated following a short substitution after the Ig-like domain. Within the ECD, human TIM-3 shares 58% aa sequence identity with mouse and rat TIM-3. TIM-3 is expressed on the surface of effector T cells (CD4+ Th1 and CD8+ Tc1) but not on helper T cells (CD4+ Th2 and CD8+ Tc2) (4, 5). In chronic inflammation, autoimmune disorders, and some cancers, TIM-3 is upregulated on several other hematopoietic cell types. It also occurs on hippocampal neurons (7-10). The Ig domain of TIM-3 interacts with a ligand on resting but not activated Th1 and Th2 cells (5, 11). The glycosylated Ig domain of TIM-3 binds cell-associated galectin-9. This induces TIM-3 Tyr phosphorylation and proapoptotic signaling (8, 12). TIM-3 functions as a negative regulator of Th1 cell activity. Its blockade results in increased IFN-gamma production, Th1 cell proliferation and cytotoxicity (5, 10, 11, 13), regulatory T cell development (5), and increases in macrophage and neutrophil infiltration into sites of inflammation (14). Soluble mouse TIM-3 constructs which lack the cytoplasmic domain have been shown to inhibit anti-tumor effector T cell responses and to enhance autoimmune reactions (5, 15).
Anderson, A.C. and D.E. Anderson (2006) Curr. Opin. Immunol. 18:665.
Mariat, C. et al. (2005) Phil. Trans. R. Soc. B 360:1681.
Meyers, J.H. et al. (2005) Trends Mol. Med. 11:362.
Monney, L. et al. (2002) Nature 415:536.
Sanchez-Fueyo, A. et al. (2003) Nat. Immunol. 4:1093.
Khademi, M. et al. (2004) J. Immunol. 172:7169.
Wiener, Z. et al. (2007) J. Invest. Dermatol. 127:906.
van de Weyer, P.S. et al. (2006) Biochem. Biophys. Res. Commun. 351:571.
Gielen, A.W. et al. (2005) J. Neuroimmunol. 164:93.
Oikawa, T. et al. (2006) J. Immunol. 177:4281.
Sabatos, C.A. et al. (2003) Nat. Immunol. 4:1102.
Zhu, C. et al. (2005) Nat. Immunol. 6:1245.
Koguchi, K. et al. (2006) J. Exp. Med. 203:1413.
Frisancho-Kiss, S. et al. (2006) J. Immunol. 176:6411.
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