Abstract | BACKGROUND:
Circular RNA migration and invasion inhibitory protein (circMIIP) is reported to be upregulated in non-small cell lung cancer (NSCLC) tissues compared with normal tissues. However, the role and working mechanism of circMIIP in NSCLC progression remain largely unclear. METHODS: Cell proliferation ability was analyzed by colony formation assay, cell counting kit-8 (CCK-8) assay, and 5-ethynyl-2'-deoxyuridine assay. Cell apoptosis was assessed by flow cytometry. Transwell assays were performed to analyze the migration and invasion abilities of NSCLC cells. The interaction between microRNA-766-5p (miR-766-5p) and circMIIP or family with sequence similarity 83A (FAM83A) was validated by dual- luciferase reporter assay and RNA immunoprecipitation assay. Xenograft tumor model was established to analyze the role of circMIIP on tumor growth in vivo. RESULTS: CircMIIP was highly expressed in NSCLC tissues and cell lines. CircMIIP knockdown restrained the proliferation, migration and invasion and induced the apoptosis of NSCLC cells. CircMIIP acted as a molecular sponge for miR-766-5p, and circMIIP silencing-mediated anti- tumor effects were largely overturned by the knockdown of miR-766-5p in NSCLC cells. miR-766-5p interacted with the 3' untranslated region ( 3'UTR) of FAM83A, and FAM83A overexpression largely reversed miR-766-5p accumulation-induced anti- tumor effects in NSCLC cells. CircMIIP competitively bound to miR-766-5p to elevate the expression of FAM83A in NSCLC cells. CircMIIP knockdown significantly restrained xenograft tumor growth in vivo. CONCLUSION: CircMIIP promoted cell proliferation, migration and invasion and suppressed cell apoptosis in NSCLC cells through mediating miR-766-5p/FAM83A axis.
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Authors | Tao Wang, Xu Zhu, Kai Wang |
Journal | Lung
(Lung)
Vol. 200
Issue 1
Pg. 107-117
(02 2022)
ISSN: 1432-1750 [Electronic] United States |
PMID | 35013754
(Publication Type: Journal Article)
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Copyright | © 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. |
Chemical References |
- FAM83A protein, human
- MIRN766 microRNA, human
- MicroRNAs
- Neoplasm Proteins
- RNA, Circular
|
Topics |
- Animals
- Apoptosis
(genetics)
- Carcinoma, Non-Small-Cell Lung
(pathology)
- Cell Line, Tumor
- Cell Proliferation
(genetics)
- Disease Models, Animal
- Gene Expression Regulation, Neoplastic
(genetics)
- Gene Knockdown Techniques
- Heterografts
- Humans
- Lung Neoplasms
(pathology)
- MicroRNAs
(metabolism)
- Neoplasm Proteins
(genetics)
- RNA, Circular
(genetics)
- Up-Regulation
|