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Wang, Zi-Hao; Ye, Lin-Lin; Xiang, Xuan; Wei, Xiao-Shan; Niu, Yi-Ran; Peng, Wen-Bei; Zhang, Si-Yu; Zhang, Pei; Xue, Qian-Qian; Wang, Hao-Lei; Du, Yi-Heng; Liu, Yao; Ai, Jia-Qi; Zhou, Qiong
Translational oncology, 04/2023, Letnik: 30Journal Article
•Circular RNA circFBXO7 overexpression suppressed NSCLC cells proliferation.•Circular RNA circFBXO7 directly inhibited miR-296-3p as a ceRNA.•KLF15 bound to the promoter of CDKN1A gene directly and promoted its expression.•Mouse homologous circular RNA circFbxo7 overexpression also suppressed tumor growth.•The novel circFBXO7/miR-296-3p/KLF15/CDKN1A axis regulated NSCLC cell proliferation. Accumulating evidence indicates that circular RNAs (circRNAs) play important roles in various cancers. Hsa_circ_0008832 (circFBXO7) is a circRNA generated from the second exon of the human F-box only protein 7 (FBXO7). Mouse circFbxo7 is a circRNA generated from the second exon of mouse F-box only protein 7 (Fbxo7). The role of human circFBXO7 and mouse circFbxo7 in non-small cell lung cancer (NSCLC) has not been reported. The expression of circFBXO7 was measured by quantitative real-time PCR. Survival analysis was performed to explore the association between the expression of circFBXO7 and the prognosis of patients with NSCLC. Lung cancer cell lines were transfected with plasmids. Cell proliferation, cell cycle, and tumorigenesis were evaluated to assess the effects of circFBXO7. Fluorescence in situ hybridization assay was used to identify the location of circFBXO7 and circFbxo7 in human and mouse lung cancer cells. Luciferase reporter assay was conducted to confirm the relationship between circFBXO7 and microRNA. In this study, we found that circFBXO7 was downregulated in NSCLC tissues and cell lines. NSCLC patients with high circFBXO7 expression had prolonged overall survival. Overexpression of circFBXO7 inhibited cell proliferation both in vitro and in vivo. Mechanistically, we demonstrated that circFBXO7 upregulated the expression of miR-296-3p target gene Krüppel-like factor 15 (KLF15) and KLF15 transactivated the expression of CDKN1A. CircFBXO7 acts as a tumor suppressor by a novel circFBXO7/miR-296-3p/KLF15/CDKN1A axis, which may serve as a potential biomarker and therapeutic target for NSCLC. Display omitted
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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