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B7-H3 Antibody / CD276

T cell activation and immune function are regulated by the innate immune system through positive and negative costimulatory molecules. One such molecule, B7-H3 (B7-homolog 3, also designated B7RP-2 and CD276) belongs to the B7 immunoglobulin superfamily. Soluble B7-H3 binds a putative receptor on activated T-cells that is distinct from CD28, CTLA-4, ICOS and PD-1. Widely expressed on nonlymphoid tissues, B7-H3 costimulates proliferation of both CD4+ and CD8+ T cells. The ability of B7-H3 to stimulate Th1 and cytotoxic-T cell responses suggest that it may have antitumor activity. B7-H3 interactions may play a role in regulating cell-mediated immune responses against cancer, implicating B7-H3 as a potential therapeutic tool.

Product Specifications

CAS Number

9007-83-4

Specifications

Immunohistochemistry (FFPE) : 1-2 µg/mL

UniProt

Q5ZPR3

Host

Mouse

Reactivity

Human

Immunogen

A portion of amino acids 100-300 from the human CD276 protein was used as the immunogen for the B7-H3 antibody.

Clonality

Monoclonal

Isotype

IgG2b κ

Clone

B7H3/4348

Applications

IHC-P

Purity

Protein A/G affinity

Format

Purified

Buffer

0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide

Reconstitution

Aliquot the B7-H3 antibody and store frozen at -20oC or colder. Avoid repeated freeze-thaw cycles.

Limitations

This B7-H3 antibody is available for research use only.

Storage Conditions

Aliquot the B7-H3 antibody and store frozen at -20°C or colder. Avoid repeated freeze-thaw cycles.

Formulation

0.2 mg/mL in 1X PBS with 0.1 mg/mL BSA (US sourced), 0.05% sodium azide

Applications Notes

Optimal dilution of the B7-H3 antibody should be determined by the researcher.

Location

Cell surface, cytoplasm

Image Legend

Analysis of HuProt (TM) microarray containing more than 19,000 full-length human proteins using B7-H3 antibody (clone B7H3/4348) . These results demonstrate the foremost specificity of the B7H3/4348 mAb. Z- and S- score: The Z-score represents the strength of a signal that an antibody (in combination with a fluorescently-tagged anti-IgG secondary Ab) produces when binding to a particular protein on the HuProt (TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If the targets on the HuProt (TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-scores. The S-score therefore represents the relative target specificity of an Ab to its intended target.

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