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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

Circular RNA hsa_circ_0005939 Regulates UHRF1BP1L Expression by Targeting miR-4693-3p to Promote Colorectal Cancer Progression

Author(s): Hua Ge*, Yan Yan, Haomin Wang, Jun Bian, Zhilong Deng, Xian Su, Kaiyuan Luo and Jianfeng Bin

Volume 31, Issue 6, 2024

Published on: 24 June, 2024

Page: [437 - 446] Pages: 10

DOI: 10.2174/0109298665297110240611115010

Abstract

Introduction: Colorectal cancer (CRC) is the second most common and fatal cancer in China. circRNAs are different expressed between tumor and non-tumor tissues, and they are proved to be correlated with tumorigenesis and cancer progression.

Objective: We aimed to explore the biological and molecular function of hsa_circ_0005939 in CRC.

Methods: We collected and compared ten CRC tissues and four noncancerous tissues and performed circRNA sequencing. We investigated the hsa_circ_0005939 expression in fresh tissues from CRC and adjacent tissues by qPCR. Meanwhile, functional roles of hsa_circ_0005939 in CRC cells were explored by CCK-8, colony formation, wounding healing, cell apoptosis and western blot assays. RNA-FISH was used to confirm the cellular distribution of hsa_circ_0005939. Bioinformatic prediction and luciferase reporter assay were used to determine the mechanisms of hsa_circ_0005939.

Results: Our results indicated that hsa_circ_0005939 was up-regulated in CRC tissues and cells. Up-regulation of hsa_circ_0005939 was associated with the occurrence and the number of lymph node metastasis of CRC. Hsa_circ_0005939 down-regulation inhibited cell proliferation, increased cell apoptosis and caused G2 phase arrest of CRC cells. Mechanistically, luciferase assay revealed that hsa_circ_0005939 acts as a molecular sponge for miR-4693-3p and then enhanced Ubiquitin Like With PHD And Ring Finger Domains 1 binding protein 1 like (UHRF1BP1L) expression.

Conclusion: Our findings indicated an oncogenic role of hsa_circ_0005939 in CRC, and it enhanced malignant phenotypes of CRC cells through miR-4693-3p/UHRF1BP1L axis. Our study may offer promising biomarkers and therapeutic targets for CRC.

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