Human MFG-E8 Antibody (278901)

R&D Systems | Catalog # MAB2767

R&D Systems

Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Western Blot, Simple Western

Cited:

Western Blot, ELISA Development

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2A Clone # 278901
View all MFG-E8 Primary Antibodies »

Product Specifications

Immunogen

Mouse myeloma cell line NS0-derived recombinant human MFG-E8
Leu24-Cys387
Accession # Q08431

Specificity

Detects human MFG-E8 in direct ELISAs and Western blots. In direct ELISAs and Western blots, this antibody does not cross-react with recombinant human (rh) C1r, rhC1s, rhC2, or rmMFG-E8.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2A

Scientific Data Images for Human MFG-E8 Antibody (278901)

Detection of Human MFG-E8 antibody by Western Blot.

Detection of Human MFG‑E8 by Western Blot.

Western blot shows lysates of human milk. PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human MFG-E8 Monoclonal Antibody (Catalog # MAB2767) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for MFG-E8 at approximately 45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of Human MFG-E8 antibody by Simple WesternTM.

Detection of Human MFG‑E8 by Simple WesternTM.

Simple Western lane view shows recombinant human (rh) MFG-E8, loaded at 50 ng/mL, and human milk, loaded at 0.2 mg/mL. A specific band was detected for MFG‑E8 at approximately 57-58 kDa (as indicated) using 50 µg/mL of Mouse Anti-Human MFG‑E8 Monoclonal Antibody (Catalog # MAB2767). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.

Applications for Human MFG-E8 Antibody (278901)

Application
Recommended Usage

Simple Western

50 µg/mL
Sample: Recombinant Human MFG-E8 and Human Milk

Western Blot

1 µg/mL
Sample: Human milk

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: MFG-E8

Milk Fat Globulin Protein E8 (MFG-E8), also known as Lactadherin, MP47, breast epithelial antigen BA46, and SED1, is a 66‑75 kDa pleiotropic secreted glycoprotein that promotes mammary gland morphogenesis, angiogenesis, and tumor progression. MFG-E8 also plays an important role in tissue homeostasis and the prevention of inflammation (1). Human MGF-E8 contains one N-terminal EGF-like domain and two C‑terminal F5/8-type discoidin-like domains (2). It shares 63% and 61% aa sequence identity with comparable regions of mouse and rat MFG-E8, respectively. Shorter isoforms of human MFG-E8 may have N-terminal deletions (beginning near the end of the first discoidin-like domain), internal deletions (lacking either the EGF-like domain or the central region of the second discoidin-like domain), or C‑terminal deletions (truncated within the second discoidin-like domain) (3). A 50 aa internal proteolytic fragment of human MFG-E8 (known as Medin) is a major component of aortic medial amyloid deposits (4). MFG-E8 is released into the milk in complex with lipid-containing milk fat globules. It is also found in multiple other cell types including endothelial cells and smooth muscle cells of the vasculature, immature dendritic cells, at the acrosomal cap of testicular and epididymal sperm, and in epithelial cells of the endometrium (1). MFG-E8 binds to the Integrins alpha V beta 3 and alpha V beta 5 and potentiates the angiogenic action of VEGF through VEGF R2 (5, 6). It reduces inflammation and tissue damage in a variety of settings. MFG-E8 functions as a bridge between phosphatidylserine on apoptotic cells and Integrin alpha V beta 3 on phagocytes, leading to the clearance of apoptotic debris (7). It mediates the engulfment of apoptotic bodies in atherosclerotic plaques and prion-infected brain (8, 9) and of apoptotic B cells during germinal center reactions (10, 11). MFG-E8 also promotes the removal of excess Collagen in fibrotic lungs and the regeneration of damaged intestinal epithelia (12, 13). Its tissue-protective role impairs anti‑tumor immunity and chemotherapy-induced apoptosis (14). MFG-E8 in the breastmilk blocks rotavirus infection in nursing babies (15).

References

  1. Raymond, A. et al. (2009) J. Cell. Biochem. 106:957.
  2. Couto, J.R. et al. (1996) DNA Cell Biol. 15:281.
  3. Yamaguchi, H. et al. (2010) Eur. J. Immunol. 40:1778.
  4. Haggqvist, B. et al. (1999) Proc. Natl. Acad. Sci. USA 96:8669.
  5. Silvestre, J.-S. et al. (2005) Nat. Med. 11:499.
  6. Borges, E. et al. (2000) J. Biol. Chem. 275:39867.
  7. Hanayama, R. et al. (2002) Nature 417:182.
  8. Ait-Oufella, H. et al. (2007) Circulation 115:2168.
  9. Kranich, J. et al. (2010) J. Exp. Med. 207:2271.
  10. Hanayama, R. et al. (2004) Science 304:1147.
  11. Kranich, J. et al. (2010) J. Exp. Med. 205:1293.
  12. Atabai, K. et al. (2009) J. Clin. Invest. 119:3713.
  13. Bu, H.-F. et al. (2007) J. Clin. Invest. 117:3673.
  14. Jinushi, M. et al. (2009) J. Exp. Med. 206:1317.
  15. Kvistgaard, A.S. et al. (2004) J. Dairy Sci. 87:4088.

Long Name

Milk Fat Globule EGF Factor 8

Alternate Names

BA46, Breast epithelial antigen BA46, Lactahedrin, Medin, MFGE8, SED1

Entrez Gene IDs

4240 (Human); 17304 (Mouse)

Gene Symbol

MFGE8

UniProt

Q08431

Additional MFG-E8 Products

Product Documents for Human MFG-E8 Antibody (278901)

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Product Specific Notices for Human MFG-E8 Antibody (278901)

For research use only

Citations for Human MFG-E8 Antibody (278901)

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