catenin


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catenin

[′kat·ə·nən]
(biochemistry)
Any of a family of 80-102-kilodalton proteins that are thought to have a major role in regulation of cell-to-cell adhesion, which is related to their interaction with E-cadherin and the actin cytoskeleton.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Immunohistochemically, these tumors show positivity for neuron specific enolase (NSE), vimentin, CD10, progesterone receptor (PR) and [beta] catenin, variable positivity for synaptophysin and cytokeratin and negativity for chromogranin4,8,11,12.
Caption: Figure 1: A model of interactions between the canonical Wnt/beta- catenin pathway and PPAR gamma under aerobic glycolysis conditions in colon cancer.
(a) The expressions of p-AKT, AKT, p-GSK3[beta], GSK3[beta], and catenin were detected after treatment with IGF for 2 h and LY294002 for 24 hours.
[23.] Dabbs DJ, Bhargava R, Chivukula M: Lobular versus ductal breast neoplasms: the diagnostic utility of p120 catenin. Am J Surg Pathol 2007, 31: 427-437.
SPN shows strong nuclear and cytoplasmic beta catenin immunoreactivity in 100% cases and loss of membrane staining for E-cadherin (due to activation of the Wnt signaling pathway).
Of these, the first two belong to the adherens junctions, where the adhesion molecules cadherin and catenin are present.
Collagenase, MCDB 131 medium, minimum essential medium, antibiotic-antimycotic solution, ophenylenediamine dihydrochloride, diaminobenzidine, Tris, glycine, protease inhibitor cocktail, bovine serum albumin (BSA), fetal bovine serum, monoclonal antibodies against CD31, E-selectin, VEGF, MMP 2, MMP 9, VE cadherin, [beta] catenin, and horseradish-peroxidase- (HRP-) conjugated secondary anti-mouse and anti-rabbit antibody were purchased from M/S Sigma-Aldrich Chemicals (St.
(16) The most likely candidate genes identified thus far are CTNNB1 (catenin, beta-1-catenin) (17) and insulin-like growth factor II (IGF2) tumour suppressor at locus 11p15.
These results raise the possibility that differences in cadherin and catenin expression levels and localization may contribute to the difference in the susceptibility of various nephron segments to renal pathology or nephrotoxic injury.
Timing a lithium-induced rise in beta catenin with the arrival of these cells may optimize healing, he says.--N.S.
These proteins include the functional component p120 catenin (p120.sup.ctn), the adaptor protein Gab 1, and the HGF/SF receptor Met.