Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Δευτέρα 23 Νοεμβρίου 2020

Circ-ZNF124 downregulation inhibits non-small cell lung cancer progression partly by inactivating the Wnt/β-catenin signaling pathway via mediating the miR-498/YES1 axis

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Non-small cell lung cancer (NSCLC) is a major type of lung cancer, leading to a high fatality rate. The role of circular RNAs (circRNAs) in cancer has been increasingly emphasized and studied. However, the function of circ-ZNF124 in NSCLC is largely unclear, and associated regulatory mechanism is not studied. Here, we examined the expression pattern of circ-ZNF124 using quantitative real-time PCR. For functional analysis, cell proliferation, cell apoptosis/cycle and cell invasion were investigated using MTT [3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide] assay, flow cytometry assay and transwell assay, respectively. As results, we found that the expression of circ-ZNF124 was elevated in NSCLC tissues and cells. Functionally, circ-ZNF124 downregulation inhibited NSCLC cell proliferation and invasion but induced apoptosis and cycle arrest in vitro, and blocked tumor growth in vivo by animal experiments. Mechanistically, we identified that miR-498 was a target of circ-ZNF124, and miR-498 directly bound to YES proto-oncogene 1 (YES1). Besides, rescue experiments discovered that the cellular effects caused by circ-ZNF124 downregulation could be reversed by miR-498 inhibition or YES1 overexpression. Moreover, we discovered that circ-ZNF124 downregulation inactivated the expression of β-catenin and c-Myc by mediating the miR-498/YES axis. In conclusion, these findings supported that circ-ZNF124 regulated the expression of YES1 by acting as a sponge of miR-498, thus restraining NSCLC development by inactivating the Wnt/β-catenin signaling pathway, which provided a novel strategy to treat NSCLC. Received 19 January 2020 Revised form accepted 3 October 2020 Supplemental Digital Content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's website, www.anti-cancerdrugs.com. Correspondence to Fei Gao, Department of Oncology, The Third Hospital of Mianyang (Sichuan Mental Health Center), No. 190, East Section of Jiannan Road, Sichuan 621000, China, Tel: +86 08162271905; e-mail: ipp7ssf@163.com Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.
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