Key result
Decreased miR-204 and increased ANGPTL2 expression in colorectal tumor tissues correlated with advanced TNM staging and worse prognosis.
Why the study?
ANGPTL2 is linked to various tumors and miR-204 is associated with CRC, prompting investigation into the role of miR-204 in colorectal tumor cell proliferation and apoptosis.
Does miR-204 regulate ANGPTL2 expression and affect proliferation and apoptosis in colorectal cancer cells?
Observational
Does miR-204 regulate ANGPTL2 expression and affect proliferation and apoptosis in colorectal cancer cells?
miR-204 inhibits colorectal tumor cell proliferation and promotes apoptosis by targeting and downregulating ANGPTL2 expression.
Answers are grounded in this paper and cite their sources.
miR-204/ANGPTL2 targeting in CRC cells is hypothesis-generating; prospective trials needed before clinical consideration.
Background: Angiopoietin-like protein 2 (ANGPTL2) is linked to various tumors. MicroRNA-204 (miR-204) is associated with colorectal cancer (CRC). Bioinformatic analysis has demonstrated a targeting relationship between miR-204 and ANGPTL2. The present study aimed to investigate the role of miR-204 in the proliferation and apoptosis of colorectal tumor cells. Methods: Colorectal tumor tissues were collected. Normal colon mucosa was used as a control. The relationship between miR-204 and ANGPTL2 expression and tumor stage and prognosis was analyzed. The dual-luciferase reporter assay confirmed targeted regulation between miR-204 and ANGPTL2. SW480 cells were allocated to the miR-NC group and the miR-204 mimic group, followed by apoptotic analysis using flow cytometry and cellular proliferation analysis using EdU staining. Results: Compared with normal colonic mucosa, miR-204 expression was decreased in colorectal tumor tissues and ANGPTL2 expression was increased, which correlated with TNM staging. The prognosis of patients with low miR-204 expression and high ANGPTL2 expression was worse than for patients with high miR-204 expression and low ANGPTL2 expression. The dual-luciferase reporter assay confirmed a targeting regulation relationship between miR-204 and ANGPTL2. Transfection of miR-204 mimic significantly inhibited the expression of ANGPTL2 and cell proliferation in SW480 cells and promoted apoptosis. Conclusions: Downregulating miR-204 expression plays a vital role in upregulating ANGPTL2 expression and promoting the pathogenesis of CRC. MiR-204 is able to hinder the proliferation of colorectal tumor cells and encourage apoptosis by targeting the inhibition of ANGPTL2 expression.
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Wang et al. (2021) conducted an observational in Colorectal cancer. miR-204 and ANGPTL2 expression vs. Normal colonic mucosa was evaluated on Prognosis and TNM staging. Decreased miR-204 and increased ANGPTL2 expression in colorectal tumor tissues correlated with advanced TNM staging and worse prognosis.
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