Anti-Mucin-1 MUC1 Antibody Picoband®, APC Conjugate

Mucin 1, cell surface associated (MUC1) or polymorphic epithelial mucin (PEM) is a mucin encoded by the MUC1 gene in humans. This gene encodes a membrane-bound protein that is a member of the mucin family. Mucins are O-glycosylated proteins that play an essential role in forming protective mucous barriers on epithelial surfaces. It is mapped to 1q22. Mucin 1 is a transmembrane mucin normally expressed on the apical borders of secretory epithelial cells. Overexpression of Mucin 1 is often associated with colon, breast, ovarian, lung and pancreatic cancers. The protein serves a protective function by binding to pathogens and also functions in a cell signaling capacity. Mucin 1 stimulated ESR1-mediated transcription and contributed to estradiol-mediated growth and survival of breast cancer cells. This gene also can suppress pulmonary innate immunity, and its antiinflammatory activity may play an important modulatory role during microbial infection.

Mucin-1;MUC-1;Breast carcinoma-associated antigen DF3;Cancer antigen 15-3;CA 15-3;Carcinoma-associated mucin;Episialin;H23AG;Krebs von den Lungen-6;KL-6;PEMT;Peanut-reactive urinary mucin;PUM;Polymorphic epithelial mucin;PEM;Tumor-associated epithelial membrane antigen;EMA;Tumor-associated mucin;CD227;Mucin-1 subunit alpha;MUC1-NT;MUC1-alpha;Mucin-1 subunit beta;MUC1-beta;MUC1-CT;MUC1;PUM;

Expressed on the apical surface of epithelial cells, especially of airway passages, breast and uterus. Also expressed in activated and unactivated T-cells. Overexpressed in epithelial tumors, such as breast or ovarian cancer and also in non-epithelial tumor cells. Isoform 7 is expressed in tumor cells only. .

The alpha subunit has cell adhesive properties. Can act both as an adhesion and an anti-adhesion protein. May provide a protective layer on epithelial cells against bacterial and enzyme attack.

1. Gendler SJ, Lancaster CA, Taylor-Papadimitriou J, Duhig T, Peat N, Burchell J, Pemberton L, Lalani EN, Wilson D (September 1990). "Molecular cloning and expression of human tumor-associated polymorphic epithelial mucin". J. Biol. Chem. 265 (25): 15286–93. 2. Wei, X., Xu, H., Kufe, D. MUC1 oncoprotein stabilizes and activates estrogen receptor alpha. Molec. Cell 21: 295-305, 2006. 3. Lu, W., Hisatsune, A., Koga, T., Kato, K., Kuwahara, I., Lillehoj, E. P., Chen, W., Cross, A. S., Gendler, S. J., Gewirtz, A. T., Kim, K. C. Cutting edge: enhanced pulmonary clearance of Pseudomonas aeruginosa by Muc1 knockout mice. J. Immun. 176: 3890-3894, 2006.

Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.

Apical cell membrane ; Single- pass type I membrane protein . Exclusively located in the apical domain of the plasma membrane of highly polarized epithelial cells. After endocytosis, internalized and recycled to the cell membrane. Located to microvilli and to the tips of long filopodial protusions.