Carcinoembryonic Antigen-related Cell Adhesion Molecule 18 (CEACAM-18) is part of the CEA protein family consisting of CEACAMs and the pregnancy-specific glycoproteins (PSGs). Both CEACAM and PSG molecules have been identified in humans and belong to the much larger glycosylphosphatidylinositol (GPI)-linked immunoglobulin (Ig) superfamily (1, 2). Mature human CEACAM-18 has a 298 amino acid (aa) extracellular domain containing 2 IgC2-like and 1 IgV-like domains, a single transmembrane domain and a short cytoplasmic tail (2). CEACAM-18 is one of only five conserved CEACAMs among mouse, rat, and human (2), but mature human CEACAM-18 has low aa sequence identify with mouse and rat at 60% and 58%, respectively. Originally discovered as a biomarker for colorectal cancer (3), CEACAMs have now been associated with numerous intracellular signaling processes including cell adhesion, cell growth, recognition and differentiation, angiogenesis, and apoptosis (4-6). While the exact function of CEACAM-18 has been yet to be elucidated, it may bind pathogen receptors or other immunoregulatory members (6). CEACAM family members were identified as the major Galectin-3 receptor candidates on human neutrophils (7). Binding of carbohydrate ligands to CEACAMs may be important in the release of proinflammatory mediators (8, 9).

References

Beauchemin, N. et al. (1999) Exp. Cell Res. 252:243.
Zebhauser, R. et al. (2005) Genomics 86:566.
Gold, P and Freedman SO, 1965) J Exp Med 122:467.
Obrink, B. (1997) Curr Opin Cell Biol 9:616.
Horst, A.K. and Wagener, C. (2004) Handb Exp Pharmacol 283.
Kuespert, K. et al. (2006) Curr Opin Cell Biol. 18(5):565.
Feuk-Lagerstedt, E. et al. (1999) J. Immunol. 163:5592.
Yoon, J. et al. (2007) J. Immunol. 179:8454.
Schröder, A.K. et al. (2006) Hum Immunol. 67:676.

Long Name

Carcinoembryonic Antigen-related Cell Adhesion Molecule 18

Alternate Names

Carcinoembryonic Antigen-Related Cell Adhesion Molecule 18

Entrez Gene IDs

729767 (Human); 72431 (Mouse); 502334 (Rat)

Gene Symbol

CEACAM18

UniProt

A8MTB9

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This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

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Human CEACAM-18 Alexa Fluor™ Plus 594-conjugated Antibody

R&D Systems, part of Bio-Techne | Catalog # FAB9869AFP594

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Background: CEACAM-18