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000142283 1001_ $$0P:(DE-HGF)0$$aAst, Volker$$b0
000142283 245__ $$aMiR-192, miR-200c and miR-17 are fibroblast-mediated inhibitors of colorectal cancer invasion.
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000142283 500__ $$aAst V*, Kordass T*  (*=eqal contribution)
000142283 520__ $$aColorectal cancer remains a leading cause of cancer-related death worldwide. A previous transcriptomics based study characterized molecular subgroups of which the stromal subgroup was associated with the worst clinical outcome. Micro-RNAs (miRNAs) are well-known regulators of gene expression and can follow a non-linear repression mechanism. We set up a model combining piecewise linear and linear regression and applied this combined regression model to a comprehensive colon adenocarcinoma dataset. We identified miRNAs involved in regulating characteristic gene sets, particularly extracellular matrix remodeling in the stromal subgroup. Comparison of expression data from separated (epithelial) cancer cells and stroma cells or fibroblasts associate these regulatory interactions with infiltrating stromal or tumor-associated fibroblasts. MiR-200c, miR-17 and miR-192 were identified as the most promising candidates regulating genes crucial for extracellular matrix remodeling. We validated our computational findings by in vitro assays. Enforced expression of either miR-200c, miR-17 or miR-192 in untransformed human colon fibroblasts down-regulated 85% of all predicted target genes. Expressing these miRNAs singly or in combination in human colon fibroblasts co-cultured with colon cancer cells considerably reduced cancer cell invasion validating these miRNAs as cancer cell infiltration suppressors in tumor associated fibroblasts.
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000142283 7001_ $$0P:(DE-He78)70e630b77e8ddc41353fc23197569b7c$$aKordass, Theresa$$b1$$eFirst author
000142283 7001_ $$aOswald, Marcus$$b2
000142283 7001_ $$aKolte, Amol$$b3
000142283 7001_ $$0P:(DE-He78)3ef7e82c44147a46608c74c80e77ffc9$$aEisel, David$$b4$$udkfz
000142283 7001_ $$0P:(DE-He78)b757b21d60bbaa4164899bb7e61b0c15$$aOsen, Wolfram$$b5$$udkfz
000142283 7001_ $$0P:(DE-He78)23fb8cfffbf2aa8eee5d51af417ad944$$aEichmüller, Stefan$$b6$$udkfz
000142283 7001_ $$aBerndt, Alexander$$b7
000142283 7001_ $$aKönig, Rainer$$b8
000142283 773__ $$0PERI:(DE-600)2560162-3$$a10.18632/oncotarget.26263$$gVol. 9, no. 85$$n85$$p35559-35580$$tOncoTarget$$v9$$x1949-2553$$y2018
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