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B7-H3 / CD276 Antibody, Mouse MAb

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B7-H3/CD276Antibody Product Information
Immunogen:Recombinant Human B7-H3 / CD276 protein (Catalog#11188-H08H)
Clone ID:06
Ig Type:Mouse IgG2b
Formulation:0.2 μm filtered solution in PBS with 5% trehalose
Preparation:This antibody was produced from a hybridoma resulting from the fusion of a mouse myeloma with B cells obtained from a mouse immunized with purified, recombinant Human B7-H3 / CD276 (rh B7-H3 / CD276; Catalog#11188-H08H; Q5ZPR3-1; Met 1-Thr 461). The IgG fraction of the cell culture supernatant was purified by Protein A affinity chromatography.
B7-H3/CD276Antibody Usage Guide
Specificity:Human B7-H3 / CD276
No cross-reactivity in ELISA with
Human cell lysate (293 cell line)
Application:ELISA, ICC/IF, IF, FCM

ELISA: 0.5-1 μg/mL

This antibody can be used at 0.5-1 μg/mL with the appropriate secondary reagents to detect Human B7H3. The detection limit for Human B7H3 is approximately 0.039 ng/well.

ICC/IF: 5-20 μg/mL

Storage:This antibody can be stored at 2℃-8℃ for one month without detectable loss of activity. Antibody products are stable for twelve months from date of receipt when stored at -20℃ to -70℃. Preservative-Free.
Sodium azide is recommended to avoid contamination (final concentration 0.05%-0.1%). It is toxic to cells and should be disposed of properly. Avoid repeated freeze-thaw cycles.
B7-H3 / CD276 Antibody, Mouse MAb, Immunofluorescence
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Immunofluorescence staining of Human B7H3 in PC3 cells. Cells were fixed with 4% PFA, blocked with 10% serum, and incubated with Mouse anti-Human B7H3 monoclonal antibody (10 µg/ml) at 4℃ overnight. Then cells were stained with the Alexa Fluor® 488-conjugated Goat Anti-rabbit IgG secondary antibody (green) and counterstained with DAPI (blue). Positive staining was localized to plasma membrane.
B7-H3 / CD276 Antibody, Mouse MAb, Flow cytometric analysis
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Flow cytometric analysis of Human B7H3(CD276) expression on PC-3 cells. Cells were stained with purified anti-Human B7H3(CD276), then a FITC-conjugated second step antibody. The histogram were derived from gated events with the forward and side light-scatter characteristics of intact cells.

B7-H3 is a member of the B7 family of immune regulatory ligands that is thought to attenuate peripheral immune responses through co-inhibition. It plays an important role in adaptive immune responses, and was shown to either promote or inhibit T-cell responses in various experimental systems. B7-H3 may play an important role in muscle-immune interactions, providing further evidence of the active role of muscle cells in local immunoregulatory processes. B7-H3 is a novel protein structurally related to the B7 family of ligands by the presence of a single set of immunoglobulin-V-like and immunoglobulin-C-like (VC) domains. Previous studies have correlated its overexpression with poor prognosis and decreased tumor-infiltrating lymphocytes in various carcinomas including uterine endometrioid carcinomas, and mounting evidence supports an immuno-inhibitory role in ovarian cancer prognosis. Recently, B7-H3 expression has been reported in several human cancers indicating an additional function of B7-H3 as a regulator of antitumor immunity.

  • Suh WK, et al. (2004) The immune regulatory protein B7-H3 promotes osteoblast differentiation and bone mineralization. Proc Natl Acad Sci U S A. 101(35): 12969-73.
  • Waschbisch A, et al. (2008) Human muscle cells express the costimulatory molecule B7-H3, which modulates muscle-immune interactions. Arthritis Rheum. 58(11): 3600-8.
  • Loos M, et al. (2010) B7-h3 and its role in antitumor immunity. Clin Dev Immunol. 2010: 683875.
  • Zang X, et al. (2010) Tumor associated endothelial expression of B7-H3 predicts survival in ovarian carcinomas. Mod Pathol. 23(8): 1104-12.
  • Sun J, et al. (2010) Clinical significance and regulation of the costimulatory molecule B7-H3 in human colorectal carcinoma. Cancer Immunol Immunother. 59(8): 1163-71.
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