LncRNA TMPO-AS1 Facilitates the Proliferation and Metastasis of NSCLC Cells by Up-regulating ERBB2 Via Sponging MiR-204-3p

Overview

Journal Int J Immunopathol Pharmacol

Publisher Sage Publications

Specialties Allergy & Immunology
Pathology
Pharmacology

Date 2020 Sep 24

PMID 32969763

Citations 12

Authors

Xiaobo Yu

Qiang Lin

Fabing Liu

Fu Yang

Jingyu Mao

Xi Chen

Affiliations

Soon will be listed here.

Abstract

Introduction: This study aims at probing into the expression and biological function of long non-coding RNA (lncRNA) TMPO-AS1 in non-small cell lung cancer (NSCLC), and exploring its regulatory role for miR-204-3p and erb-b2 receptor tyrosine kinase 2 (ERBB2).

Methods: In this study, paired NSCLC samples were collected, and the expression levels of TMPO-AS1, miR-204-3p and ERBB2 were examined by quantitative real-time polymerase chain reaction (qRT-PCR); proliferative ability and colony formation ability were detected by CCK-8 assay and plate colony formation assay, respectively; flow cytometry was performed to detect the effect of TMPO-AS1 on apoptosis; Transwell assay was used to detect the changes of migration and invasion; qRT-PCR and Western blot were utilised to analyse the changes of miR-204-3p and ERBB2 regulated by TMPO-AS1; luciferase reporter gene assay and RNA immunoprecipitation assay were employed to determine the regulatory relationship between TMPO-AS1 and miR-204-3p.

Results: We demonstrated that TMPO-AS1 was significantly up-regulated in cancerous tissues of NSCLC samples, and positively correlated with the expression of ERBB2, while negatively correlated with miR-204-3p. After transfection of TMPO-AS1 shRNAs into NSCLC cells, the malignant phenotypes of NSCLC cells were significantly inhibited, while overexpression of TMPO-AS1 had opposite effects; TMPO-AS1 was also demonstrated to regulate the expression of miR-204-3p by sponging it, and indirectly modulate the expression of ERBB2.

Conclusion: Collectively, we conclude that TMPO-AS1 has the potential to be the 'ceRNA' to regulate the expression of ERBB2 by sponging miR-204-3p in NSCLC.

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