Abstract:
:Collagen XVII and integrin α6β4 have well-established roles as epithelial adhesion molecules. Their binding partner laminin 332 as well as integrin α6β4 are largely recognized to promote invasion and metastasis in various cancers, and collagen XVII is essential for the survival of colon and lung cancer stem cells. We have studied the expression of laminin γ2, collagen XVII and integrin β4 in tissue microarray samples of squamous cell carcinoma (SCC) and its precursors, actinic keratosis and Bowen's disease. The expression of laminin γ2 was highest in SCC samples, whereas the expression of collagen XVII and integrin β4 varied greatly in SCC and its precursors. Collagen XVII and integrin β4 were also expressed in SCC cell lines. Virus-mediated RNAi knockdown of collagen XVII and integrin β4 reduced the migration of less aggressive SCC-25 cells in horizontal scratch wound healing assay. Additionally, in a 3D organotypic myoma invasion assay the loss of collagen XVII or integrin β4 suppressed equally the migration and invasion of SCC-25 cells whereas there was no effect on the most aggressive HSC-3 cells. Variable expression patterns and results in migration and invasion assays suggest that collagen XVII and integrin β4 contribute to SCC tumorigenesis.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Moilanen JM,Löffek S,Kokkonen N,Salo S,Väyrynen JP,Hurskainen T,Manninen A,Riihilä P,Heljasvaara R,Franzke CW,Kähäri VM,Salo T,Mäkinen MJ,Tasanen Kdoi
10.1038/srep45057subject
Has Abstractpub_date
2017-03-22 00:00:00pages
45057issn
2045-2322pii
srep45057journal_volume
7pub_type
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