Abstract

Genetically abnormal fibroblasts are notably more prevalent in colorectal cancer (CRC) than in adjacent normal tissue, emphasizing their significance in driving the heterogeneity of the tumor microenvironment. Functioning as a significant regulatory gene in the context of fibrosis, FOXF1 adjacent non-coding developmental regulatory RNA (FENDRR) has exhibited abnormal expression in colorectal cancer and interstitial localization in our experiments. However, current research on the role of FENDRR in cancer has focused solely on its impact on cancer cells. Its crucial role in the tumor stroma is yet to be explored. The goal of this study was to understand the relationship between atypical FENDRR expression, its distinct localization, and genetically abnormal fibroblasts in CRC. We aimed to establish the function of FENDRR within the stromal compartment of patients through bioinformatics. Our study confirmed that FENDRR suppresses cancer-associated fibroblasts by inhibiting their activation and collagen generation in CRC. Furthermore, our findings suggest that low FENDRR expression indicates a poor prognosis. Therefore, we propose that FENDRR is a promising therapeutic target for future studies in CRC.

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