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Questions? Please consult our answers to frequently asked questions at http://www.ebioscience.com/faq. DescriptionThe eBioSN4 monoclonal antibody reacts with human CD9. CD9 is a 24 kDa member of the tetraspanin family, whose members are characterized by the presence of 4 hydrophobic transmembrane domains. CD9 is expressed in platelets, eosinophils, basophils, pre-B cells, activated T cells and neural cell lines. Furthermore, CD9 expression has been associated with a malignant phenotype, including expression on 90% of non T cell acute lymphoblastic leukemia cells and on 50% of chronic lymphocytic and acute myeloblastic leukemias. In platelets, CD9 is expressed in α-granules and through association with the integrin αIIb/βIII plays a role in platelet aggregation, as demonstrated by the use of anti-human CD9 antibodies. CD9 has also been shown to induce the aggregation of pre-B cell lines, and the adhesion and migration of pre-B cells and Schwann cells. Additionally, it has been demonstrated that CD9 is able to provide a co-stimulatory signal for T cells independently of CD28, in the absence of antigen-presenting cells. Binding of the eBioSN4 monoclonal antibody partially cross-blocks binding of another anti-human CD9 monoclonal antibody, MM2/57. Applications ReportedFor research use only, not for diagnostic or therapeutic use. This eBioSN4 (SN4 C3-3A2) antibody has been reported for use in flow cytometric analysis, immunoprecipitation, and immunohistology staining of frozen tissue sections. Applications TestedThis eBioSN4 (SN4 C3-3A2) antibody has been tested by flow cytometric analysis of normal human platelets. This can be used at less than or equal to 0.5 μg per 100 μl blood (or per 1 million cells in 100 μl total staining volume). It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. References
Luo Y, Hara H, Haruta Y, Seon BK. Establishment of ascitic tumor of human pre-B acute lymphoblastic leukemia in nonconditioned nude mice. Cancer Res. 1989 Feb 1;49(3):706-10. (SN4, PubMed) Ito T, Inaba M, Inaba K, Toki J, Sogo S, Iguchi T, Adachi Y, Yamaguchi K, Amakawa R, Valladeau J, Saeland S, Fukuhara S, Ikehara S. A CD1a+/CD11c+ subset of human blood dendritic cells is a direct precursor of Langerhans cells. J Immunol. 1999 Aug 1;163(3):1409-19. Related ProductsCat. 11-4011 FITC Anti-Mouse IgG Cat. 13-4013 Biotin Anti-Mouse IgG (clone Polyclonal) Cat. 11-4317 Streptavidin-FITC (Fluorescein isothiocyanate) Cat. 12-4317 Streptavidin-PE (Phycoerythrin) Cat. 17-4317 Streptavidin Allophycocyanin (SA-APC) Cat. 14-4714 Affinity Purified Mouse IgG1, K Isotype Control |
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