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Tenascin-C as a prognostic determinant of colorectal cancer through induction of epithelial-to-mesenchymal transition and proliferation.

Although Tenascin-C (TNC) as an extracellular matrix protein involved in various cancers, the mechanisms by which TNC leads to decreased survival time remain to be clarified in CRC. We assessed the expression of TNC and its relationship with cancer associated fibroblasts (CAFs) markers, epithelial-to-mesenchymal transition (EMT) and cell cycle markers in 100 paraffin-embedded CRC tissue samples using immunohistochemistry. TNC expression was higher in CRC tissue samples than in adjacent non-tumor-tissues (P < .001). In addition, TNC was involved in clinical stage (P = .030), pT stage (P = .049), distant metastasis (P = .004), tumor recurrence (P = .007), and tumor budding (P < .001). TNC play crucial roles in regulating the poor 5-year CRC survival rate by Kaplan-Meier analysis, and was an independent predictor of poor overall survival (P = .007) and disease-free survival (P = .004) in CRC. Moreover, it was postively correlated with CAF (SMA (P < .001) and FSP1 (P = .005)) and cell cycle marker p27 (P = .013) along with EMT (E-cadherin, P = .599; Snail, P < .001; vimentin, P = .012). TNC may promote EMT-like change and proliferation, which lead to poor prognosis for patients with CRC.

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