CD44 (Extracellular region) (clone M010), anti-human

Background:
Cell surface adhesion protein CD44 is a ubiquitously expressed type I transmembrane protein that has important functions related to cell-cell adhesion and extracellular matrix interactions. The transmembrane protein is post-translationally modified at multiple sites by glycosylation and phosphorylation. CD44 ligands include hyaluronic acid, collagens, laminins, osteopontin, serglycin, and fibronectin. CD44 has been implicated in inflammatory cell functions as well as in tumor growth and metastasis. CD44 is overexpressed in many types of cancer; the interaction between CD44 and HER2 has been linked to an increase in ovarian carcinoma cell growth. CD44 interacts with ezrin, radixin, and moesin to link the actin cytoskeleton to the plasma membrane and the extracellular matrix. These interactions are critical for CD44 function in cell-cell adhesion and cell motility.

Background References
Tsukita, S., et al. (1994) J Cell Biol. 126(2):391
Goodinson, S., et al. (1999) Mol Path. 52(4):189
Cichy, J., et al. (2003) J Cell Biol. 161(5):839

Immunogen: Clone M010 was generated from a proprietary antigen related to the extracellular region of human CD44.from the A431 epidermoid carcinoma cell line.

Specificity: Clone M010 detects 80-130 kDa* bands corresponding to the molecular mass of CD44 on SDS-PAGE immunoblots of native and denaturing human MDA-MB-231, A549, and A431 cell lysates. The antibody can be used for multiple applications including ELISA, western blot, immunocytochemical labeling and immunoprecipitation. In addition, the antibody labels live unfixed A549 and MeWo cells, so the antibody may be useful for isolating CD44+ cells and for CD44 functional assays.

Application dilution:
ELISA: 1:2000
ICC: 1:100
IP: 1:50
WB: 1:1000
End user should determine optimal dilution for their particular applications and experiments.Western blot membranes were incubated with diluted antibody in 5% non-fat milk, PBS, 0.04% Tween20 for 1 hour at room temperature.

Buffer/Storage:
Mouse monoclonal antibody purified with protein G chromatography is supplied in 100 µl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.