Inhibiting Proliferation and Metastasis of Osteosarcoma Cells by Downregulation of Long Non-coding RNA Colon Cancer-associated Transcript 2 Targeting MicroRNA-143

Overview

Journal Oncol Lett

Specialty Oncology

Date 2021 Mar 5

PMID 33664828

Citations 5

Authors

Fengjiang Bi

Can Chen

Jing Fu

Lei Yu

Jia Geng

Affiliations

Soon will be listed here.

Abstract

Osteosarcoma is a malignant bone tumor, which has a high incidence in children and adolescents. However, the pathogenesis of osteosarcoma remains unclear. Long noncoding RNA (lncRNA) is a new potential therapeutic target and diagnostic biomarker for osteosarcoma. Hence, the present study aimed to explore the effect of lncRNA colon cancer-associated transcript (CCAT2) on osteosarcoma and its potential underlying mechanisms. For this purpose, the proliferation of osteosarcoma cells was measured using the CCK-8 assay. The scratch-wound and cell invasion assays were used to determine the migration and invasion of osteosarcoma cells, respectively. LncRNA CCAT2 and microRNA (miR)-143 binding sites were identified by the dual-luciferase reporter assay. RNA and protein expression levels were detected by reverse-transcription quantitative PCR and western blotting, respectively. Downregulation of lncRNA CCAT2 inhibited the proliferation, migration, and invasion of osteosarcoma cells. The findings also revealed that miR-143 bound directly to lncRNA CCAT2. The expression of miR-143 was upregulated by the knockdown of lncRNA CCAT2. Downregulation of the FOS-like antigen 2 was also observed after knockdown of lncRNA CCAT2. The function of lncRNA CCAT2 in osteosarcoma cells was attenuated by co-transfection with anti-miR-143 oligodeoxyribonucleotide. In conclusion, downregulation of lncRNA CCAT2 inhibited the proliferation and metastasis of osteosarcoma cells by targeting miR-143. lncRNA CCAT2 was identified as a potential target for osteosarcoma treatment.

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