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Protein & Peptide Letters

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ISSN (Print): 0929-8665
ISSN (Online): 1875-5305

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Research Article

LINC01836 Promotes Colorectal Cancer Progression and Functions as ceRNA to Target SLC17A9 by Sponging miR-1226-3p

Author(s): Zhihua Xu, Yue Yu, Hao Ni, Wei Sun* and Yuting Kuang*

Volume 31, Issue 1, 2024

Published on: 06 December, 2023

Page: [43 - 60] Pages: 18

DOI: 10.2174/0109298665248028231122064831

Price: $65

Abstract

Background: Increasing evidence proves that long non-coding RNAs (lncRNAs) play a key role in the occurrence and development of colorectal cancer. However, the function and molecular mechanism of LINC01836 in CRC are still unknown.

Methods: The differentially expressed lncRNAs in colorectal cancer were obtained from the RNA sequencing data. The effects of LINC01836 on colorectal cancer cells were tested in in vitro experiments. The mechanism of LINC01836 action was investigated through western blot, RNA immunoprecipitation assay and luciferase reporter assay. Moreover, the xenograft mouse model was conducted to examine the effects of LINC01836 in vivo.

Results: In this study, we showed that LINC01836 was significantly elevated in colorectal cancer tissues and cells. Elevated LINC01836 expression significantly correlated with larger tumor size, positive lymph node metastasis, distant metastasis, advanced tumor-node-metastasis (TNM) stage, and poor prognosis. Furthermore, decreased expression of LINC01836 repressed proliferation, migration, and invasion in vitro and vivo, and high LINC01836 expression displayed the opposite effect. Further analysis revealed that LINC01836 could regulate the expression of SLC17A9 by competing with miR-­‐1226-3p. Furthermore, down-regulation of LINC01836 or increased expression of miR-1226-3p markedly reversed the effects of SLC17A9 overexpression on colorectal cancer cells.

Conclusion: This study showed that LINC01836 regulated the expression of SLC17A9 through sponge miR-1226-3p by acting as a competitive endogenous RNA (ceRNA), promoted the progression of colorectal cancer, and suggested a new prognostic biomarker and potential cancer treatment target for colorectal cancer.

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