Invitrogen™ CD73 Monoclonal Antibody (eBioTY/11.8 (TY/11.8)), PE, eBioscience™, Invitrogen™

Beskrivning

Description: eBioTY/11.8 recognizes the with CD73 a 69-kDa GPI-anchored cell-surface protein with ecto-5'-nucleotidase activity. Expression on myeloid cells (CD11b) is restricted to the bone marrow. In human CD73 can be induced to secrete a soluble form with IL-2 suggesting a role in mediating activation signals. Differences between human and mouse CD73 have been reported. BALB/c mice have more CD4+CD73+ than CD8+CD73+ while the reciprocal is documented in humans. CD73 is expressed on a subset of lymphocytes and increases during lymphocyte maturation. Recently it has been found that memory CD4 T cells express and are similar to the uncommitted primed precursor helper cells (Thpp) that can differentiate into Th1 or Th2 cells. Furthermore CD73 has been found on regulatory T cells. Applications Reported: This eBioTY/11.8 (TY/11.8) antibody has been reported for use in flow cytometric analysis. Applications Tested: This eBioTY/11.8 (TY/11.8) antibody has been tested by flow cytometric analysis of mouse splenocytes. This can be used at less than or equal to 0.125 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.

CD73, also known as Ecto-5-prime-nucleotidase or 5-prime-ribonucleotide phosphohydrolase, is an enzyme that catalyzes the conversion of purine 5-prime mononucleotides to nucleosides at neutral pH, with AMP as its preferred substrate. It is composed of a dimer of two identical 70 kDa subunits, externally bound to the plasma membrane via a glycosyl phosphatidyl inositol linkage. CD73 serves as a marker of lymphocyte differentiation and is expressed on a subset of lymphocytes, increasing during lymphocyte maturation. It is found on memory CD4 T cells, which resemble uncommitted primed precursor helper cells (Thpp) capable of differentiating into Th1 or Th2 cells, and is also present on regulatory T cells. CD73 deficiency is associated with various immunodeficiency diseases. Other forms of 5-prime nucleotidase exist in the cytoplasm and lysosomes, distinguishable from CD73 by their substrate affinities, requirement for divalent magnesium ions, activation by ATP, and inhibition by inorganic phosphate. The CD73 gene is localized to chromosome 6q14-q21, and defects in this gene can lead to conditions such as calcification of joints and arteries, and intestinal tuberculosis. Additionally, two transcript variants encoding different isoforms of CD73 have been identified.