Invitrogen™ CD103 (Integrin alpha E) Monoclonal Antibody (OX62), PE, eBioscience™

Beschreibung

Description: The OX62 monoclonal antibody reacts with rat CD103, also known as alphaE2 integrin. CD103 was originally identified on rat veiled dendritic cells, and is expressed by dendritic epidermal T cells in the skin, intraepithelial lymphocytes in the small intestine and by dendritic cells associated with gammadelta T cells. Integrins are a family of heterodimeric proteins which contain non-covalently associated alpha and beta transmembrane glycoproteins. Integrins function as receptors for extracellular matrix and cell-cell adhesion molecules. Applications Reported: This OX62 antibody has been reported for use in flow cytometric analysis. Applications Tested: This OX62 antibody has been tested by flow cytometric analysis of rat splenocytes. This can be used at less than or equal to 0.25 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. Excitation: 488-561 nm; Emission: 578 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser. Filtration: 0.2 μm post-manufacturing filtered.

CD103, also known as ITGAE or Integrin alpha E, is a molecule that non-covalently associates with integrin beta 7 to form a heterodimeric integral membrane protein. This protein is part of the integrin family, characterized by an alpha chain and a beta chain. Specifically, CD103 includes a 150 kDa alpha chain and a 120 kDa beta chain, with the alpha integrin undergoing post-translational cleavage in the extracellular domain to yield disulfide-linked heavy and light chains. CD103 is primarily expressed on mucosa-associated T lymphocytes, intraepithelial lymphocytes (IELs), and activated cells, as well as a subset of TGF beta-1 cells. It is preferentially found in human intestinal IELs, where it plays a role in adhesion and may serve as an accessory molecule for IEL activation. CD103 binds to epithelial cell antigen E-cadherin, mediating the homing of lymphocytes to the intestinal epithelium. In peripheral blood and lymphoid organs, CD103 is expressed by 0.5 to 2% of resting lymphocytes, and its expression can be upregulated in vitro by stimulating human T cells with mitogens. CD103 is also expressed by hairy cell leukemia (HCL) and some chronic B cell lymphocytic leukemias. The CD103 antibody stains a few bone marrow cells and, rarely, peripheral blood lymphocytes. Diseases associated with CD103 dysfunction include hairy cell leukemia and splenic marginal zone lymphoma.