Human CEACAM-5/CD66e Alexa Fluor® 647-conjugated Antibody

Catalog # Availability Size / Price Qty
FAB41281R-100UG
Human CEACAM-5/CD66e Alexa Fluor® 647-conjugated Antibody in Flow Cytometry
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Human CEACAM-5/CD66e Alexa Fluor® 647-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human CEACAM‑5/CD66e in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human CEACAM-1 or -6 is observed.
Source
Monoclonal Mouse IgG2A Clone # 487609
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived recombinant human CEACAM‑5/CD66e
Lys35-Ala685
Accession # ABM87752
Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 647 (Excitation= 650 nm, Emission= 668 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Example

Flow Cytometry Detection of CEACAM‑5/CD66e in HEK293 Human Cell Line Transfected with Human CEACAM-5/CD66e and eGFP by Flow Cytometry.  View Larger

Detection of CEACAM‑5/CD66e in HEK293 Human Cell Line Transfected with Human CEACAM-5/CD66e and eGFP by Flow Cytometry.  HEK293 human embryonic kidney cell line transfected with either (A) human CEACAM-5/CD66e or (B) irrelevant transfectants and eGFP was stained with Mouse Anti-Human CEACAM‑5/CD66e Alexa Fluor® 647‑conjugated Monoclonal Antibody (Catalog # FAB41281R). Quadrant markers were set based on control antibody staining (IC003R). Staining was performed using our Staining Membrane-associated Proteins protocol.

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Preparation and Storage

Reconstitution
Reconstitution default not known
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: CEACAM-5/CD66e

CEACAM-5, also known as CEA and CD66e, belongs to the large family of CEACAM and pregnancy specific glycoproteins. CEACAM molecules are either transmembrane or GPI-linked, and are differentially expressed between species (1, 2). Orthologs of human CEACAM‑5 have not been described in other species. CEACAM-5, which is expressed primarily by epithelial cells, consists of an N-terminal Ig-like V-set domain followed by six Ig-like C2-set domains and a GPI anchor (2‑4). CEACAM-5 is synthesized as a 180 kDa, variably glycosylated molecule of which approximately 60% is carbohydrate (5). CEACAM-5 functions as a calcium‑independent adhesion molecule through homophilic and heterophilic interactions with CEACAM-1 (6‑8). CEACAM-5 is restricted to the apical face of intestinal epithelial cells in the adult but is more diffuse during embryonic development and in tumors (7). This is consistent with a role in the development and maintenance of epithelial architecture. CEACAM-5 is upregulated in a wide variety of human tumors and is a commonly used cancer marker (9). It promotes tumor cell migration, invasion, adhesion, and metastasis (10). It also contributes to tumor formation by maintaining cellular proliferation in the presence of differentiation stimuli, and by blocking apoptosis following loss of ECM anchorage (anoikis) (11, 12). The GPI anchoring of CEACAM-5 can be released by GPI-PLD, resulting in a soluble molecule that also promotes tumor metastasis (13). Cell surface expression of CEACAM-5 on tumor cells prevents the adhesion of CEACAM-1 expressing NK cells and provides protection from NK‑mediated lysis (6). CEACAM-5 also binds a subset of Neisseria opacity proteins (Opa) and E. coli adhesion proteins (14‑16). These interactions trigger clustering of the lipid raft-localized CEACAM-5 to sites of pathogen contact (15, 16).

References
  1. Zebhauser, R. et al. (2005) Genomics 86:566.
  2. Hammarstrom, S. (1999) Semin. Cancer Biol. 9:67.
  3. Schrewe H. et al. (1990) Mol. Cell. Biol. 10:2738.
  4. Hefta, S.A. et al. (1988) Proc. Natl. Acad. Sci. 85:4648.
  5. Garcia, M. et al. (1991) Cancer Res. 51:5679.
  6. Stern, N. et al. (2005) J. Immunol. 174:6692.
  7. Benchimol, S. et al. (1989) Cell 57:327.
  8. Zhou, H. et al. (1993) J. Cell Biol. 122:951.
  9. Goldenberg, D.M. et al. (1976) J. Natl. Cancer Inst. 57:11.
  10. Blumenthal, R.D. et al. (2005) Cancer Res. 65:8809.
  11. Screaton, R.A. et al. (1997) J. Cell Biol. 137:939.
  12. Ordonez, C. et al. (2000) Cancer Res. 60:3419.
  13. Yamamoto, Y. et al. (2005) Biochem. Biophys. Res. Commun. 333:223.
  14. Chen, T. et al. (1997) J. Exp. Med. 185:1557.
  15. Bos, M.P. et al. (1997) Infect. Immun. 65:2353.
  16. Berger, C.N. et al. (2004) Mol. Microbiol. 52:963.
Long Name
Carcinoembryonic Antigen-related Cell Adhesion Molecule 5
Entrez Gene IDs
1048 (Human); 73250 (Mouse)
Alternate Names
Carcinoembryonic antigen; carcinoembryonic antigen-related cell adhesion molecule 5; CD66e antigen; CD66e; CEA; CEACAM5; CEACAM-5; CEACD66e; DKFZp781M2392; Meconium antigen 100

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