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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

Novel Circular RNA CircUBAP2 Drives Tumor Progression by Regulating the miR-143/TFAP2B Axis in Prostate Cancer

Author(s): Zhong Lv*, Yunfeng Shi, Haoran Wu, Kai Cao, Xiaowu Liu and Chengyue Wang

Volume 31, Issue 1, 2024

Published on: 13 November, 2023

Page: [61 - 73] Pages: 13

DOI: 10.2174/0109298665268943231103114654

open access plus

Abstract

Background: More and more investigations reveal that circular RNAs (circRNAs) are involved in cancer progression. CircRNA UBAP2 was closely related to prostate cancer. However, the biological function and specifical mechanism of circUBAP2 are still poorly discovered in prostate cancer (PCa).

Objectives: This study aims to explore the biological function and mechanism of circUBAP2 in PCa.

Methods: The levels of mRNA and proteins were assessed by qRT-PCR assay and Western blot, respectively. Cell growth, migration, and invasion ability were measured using CCK-8 assay and Transwell assay. Apoptosis was assessed using flow cytometry. The interactions between circUBAP2, miR-143, and TFAP2B were determined by luciferase report assay. The tumor growth was determined by in vivo tumor formation assay. The tumor morphology was assessed using H&E staining assay, and immunohistochemistry assay was conducted to assess the level of KI67.

Results: We found circUBAP2 and TFAP2B were notably elevated, while miR-143 was largely attenuated in prostate cancer cells and tissues. CircUBAP2 was found to affect cell viability, metastasis and EMT, while attenuating the apoptosis rate of prostate cancer cells. CircUBAP2 directly targeted miR-143, and miR-143 inhibitor could reverse the effects that circUBAP2 interference-induced in prostate cancer cells. TFAP2B is directly bound to miR-143, and overexpression of TFAP2B could attenuate the influences that miR-143-induced in prostate cancer cells.

Conclusion: CircUBAP2 promoted prostate cancer progression via miR-143/TFAP2B axis.

Keywords: Prostate cancer, circUBAP2, miR-143, TFAP2B, tumor progression, CCK-8 assay.

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