Human/Mouse B7-H4 Alexa Fluor® 700-conjugated Antibody

R&D Systems, part of Bio-Techne | Catalog # FAB21541N

Recombinant Monoclonal Antibody.
R&D Systems, part of Bio-Techne
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FAB21541N-100UG
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Key Product Details

Species Reactivity

Human, Mouse

Applications

Flow Cytometry

Label

Alexa Fluor 700 (Excitation = 675-700 nm, Emission = 723 nm)

Antibody Source

Recombinant Monoclonal Rabbit IgG Clone # 2319B

View all B7-H4 Antibodies »

Product Specifications

Immunogen

Mouse myeloma cell line, NS0-derived mouse B7-H4
Phe29-Pro258
Accession # Q7TSP5

Specificity

Detects mouse B7-H4 in direct ELISAs. Detects human and mouse B7-H4 in Western blots.

Clonality

Monoclonal

Host

Rabbit

Isotype

IgG

Applications for Human/Mouse B7-H4 Alexa Fluor® 700-conjugated Antibody

Application
Recommended Usage

Flow Cytometry

0.25-1 µg/mL
Sample: HEK293 Human Cell Line Transfected with Mouse B7-H4 and eGFP
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Protein A or G purified from cell culture supernatant

Formulation

Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: B7-H4

B7-H4, also known as B7x and B7S1, is a 50‑80 kDa glycosylated member of the B7 family of immune co‑stimulatory proteins (1, 2). Mature mouse B7-H4 consists of a 230 amino acid (aa) extracellular domain (ECD) with one Ig-like V-set domain and one Ig‑like C2‑set domain which is followed by a hydrophobic C‑terminal region (3‑5). Within the ECD, mouse B7‑H4 shares 90% and 99% aa sequence identity with human and rat B7‑H4, respectively. It shares 21%‑29% aa sequence identity with mouse B7‑1, B7‑2, B7‑H1, B7‑H2, B7‑H3, and PD‑L2. B7‑H4 is expressed on the surface of activated lymphocytes, macrophages, monocytes, dendritic cells, epithelial cells, and bone marrow‑derived mesenchymal stem cells (4‑8). Its binding to activated T cells dampens T cell responses and induces cell cycle arrest in the T cell (3‑5). Reverse signaling can induce either cell cycle arrest or apoptosis in the B7‑H4 expressing cell (9, 10). B7‑H4 is up‑regulated in several carcinomas in correlation with tumor progression and metastasis (2, 7, 11, 12). A soluble form of B7‑H4 is elevated in the serum of ovarian cancer, renal cell carcinoma, and rheumatoid arthritis patients, also in correlation with advanced disease status (13‑15). Soluble B7‑H4 functions as a decoy molecule that blocks the inhibitory influence of B7‑H4 on immune activation (15). Despite evidence for the involvement of B7‑H4 in immune regulation, mice deficient in its expression do not show significant immune deficiencies, suggesting compensation by other molecules in vivo (16).

References

  1. Yi, K.H. and L. Chen (2009) Immunol. Rev. 229:145.
  2. Salceda, S. et al. (2005) Exp. Cell Res. 306:128.
  3. Zang, X. et al. (2003) Proc. Natl. Acad. Sci. 100:10388.
  4. Prasad, V.R. et al. (2003) Immunity 18:863.
  5. Sica, G.L. et al. (2003) Immunity 18:849.
  6. Kryczek, I. et al. (2006) J. Exp. Med. 203:871.
  7. Tringler, B. et al. (2005) Clin. Cancer Res. 11:1842.
  8. Xue, Q. et al. (2010) Stem Cells Dev. 19:27.
  9. Song, H. et al. (2008) Cancer Lett. 266:227.
  10. Park, G.B. et al. (2009) Immunology 128:360.
  11. Zang, X. et al. (2007) Proc. Natl. Acad. Sci. 104:19458.
  12. Krambeck, A.E. et al. (2006) Proc. Natl. Acad. Sci. 103:10391.
  13. Simon, I. et al. (2006) Cancer Res. 66:1570.
  14. Thompson, R.H. et al. (2008) Cancer Res. 68:6054.
  15. Azuma, T. et al. (2009) PloS Med. 6:e1000166.
  16. Suh, W.-K. et al. (2006) Mol. Cell. Biol. 26:6403.

Long Name

B7 Homolog 4

Alternate Names

B7H4, B7S1, B7x, Vtcn1

Entrez Gene IDs

79679 (Human); 242122 (Mouse); 295322 (Rat)

Gene Symbol

VTCN1

UniProt

Q7TSP5

Additional B7-H4 Products

Product Documents

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human/Mouse B7-H4 Alexa Fluor® 700-conjugated Antibody


This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

For research use only

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