P-cadherin counteracts myosin II-B function: implications in melanoma progression.
Mol Cancer, 2010/9/22;9:255.
Jacobs K[1], Van Gele M, Forsyth R, Brochez L, Vanhoecke B, De Wever O, Bracke M
Affiliations
PMID: 20860798DOI: 10.1186/1476-4598-9-255
Impact factor: 41.444
Abstract
background: Malignant transformation of melanocytes is frequently attended by a switch in cadherin expression profile as shown for E- and N-cadherin. For P-cadherin, downregulation in metastasizing melanoma has been demonstrated, and over-expression of P-cadherin in melanoma cell lines has been shown to inhibit invasion. The strong invasive and metastatic nature of cutaneous melanoma implies a deregulated interplay between intercellular adhesion and migration-related molecules
results: In this study we performed a microarray analysis to compare the mRNA expression profile of an invasive BLM melanoma cell line (BLM LIE) and the non-invasive P-cadherin over-expression variant (BLM P-cad). Results indicate that nonmuscle myosin II-B is downregulated in BLM P-cad. Moreover, myosin II-B plays a major role in melanoma migration and invasiveness by retracting the tail during the migratory cycle, as shown by the localization of myosin II-B stress fibers relative to Golgi and the higher levels of phosphorylated myosin light chain. Analysis of P-cadherin and myosin II-B in nodular melanoma sections and in a panel of melanoma cell lines further confirmed that there is an inverse relationship between both molecules.
conclusions: Therefore, we conclude that P-cadherin counteracts the expression and function of myosin II-B, resulting in the suppression of the invasive and migratory behaviour of BLM melanoma cells.
MeSH terms
Actins; Blotting, Western; Cadherins; Cell Movement; Electrophoresis, Polyacrylamide Gel; Humans; Immunohistochemistry; Immunoprecipitation; Melanoma; Microscopy, Confocal; Nonmuscle Myosin Type IIB; Polymerase Chain Reaction; RNA, Small Interfering; Tumor Cells, Cultured
More resources
Full text:
Europe PubMed Central; PubMed Central
EndNote: Download