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Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | Wang, Lanjun | - |
dc.contributor.author | Li, Mengqi | - |
dc.contributor.author | Lian, Rong | - |
dc.date.accessioned | 2023-02-23T12:21:23Z | - |
dc.date.available | 2023-02-23T12:21:23Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Histology and Histopathology Vol. 37, nº7 (2022) | es |
dc.identifier.issn | 0213-3911 | - |
dc.identifier.issn | 1699-5848 | - |
dc.identifier.uri | http://hdl.handle.net/10201/128693 | - |
dc.description.abstract | Background. Circular RNAs (circRNAs) expression profile has been reported in lung adenocarcinoma (LUAD) cells resistant to gefitinib, and hsa_circ_0000567 was abnormally upregulated. However, its precise role in gefitinib resistance remains unclarified. Methods. Levels of hsa_circ_0000567, microRNA (miR)-377-3p and zinc finger protein X-linked (ZFX) were detected by real-time quantitative PCR. Direct attachment was confirmed by dual-luciferase reporter assay and RNA immunoprecipitation assay. Gefitinib resistance was measured by MTT assay, colony formation assay, flow cytometry, western blotting, and xenograft in mice. Results. Expression of hsa_circ_0000567 was upreguated in human gefitinib-resistant human LUAD tissues and cells (HCC827/GR and PC9/GR). Clinically, higher hsa_circ_0000567 correlated with advanced tumor burden. Blockage of hsa_circ_0000567 suppressed cell viability, half maximal inhibitory concentration (IC50) value, colony formation ability, and expression of Bcl-2 and proliferating cell nuclear antigen (PCNA) in HCC827/GR and PC9/GR cells under gefitinib treatment or not, accompanied with enhanced apoptosis rate and Bax expression. In vivo, tumor growth of PC9/GR cells untreated and treated with gefitinib was restrained by silencing hsa_circ_0000567. miR-377-3p was directly regulated by hsa_circ_0000567, and then targeted ZFX. Similar to hsa_circ_0000567 knockdown, overexpressing miR377-3p inhibited chemoresistance in genitinib-resistant LUAD cells in vitro, whereas, depleting miR-377-3p was able to promote gefitinib resistance in spite of hsa_circ_0000567 knockdown. Moreover, restoring ZFX abrogated miR-377-3p-mediated chemosensitivity in genitinib-resistant LUAD cells in vitro. Conclusion. The hsa_circ_0000567/miR-377- 3p/ZFX axis might contribute to acquired gefitinib resistance in LUAD cells both in vitro and in vivo, suggesting hsa_circ_0000567 as a novel therapeutic target in treatment of gefitinib-resistant LUAD. | es |
dc.format | application/pdf | es |
dc.format.extent | 18 | es |
dc.language | eng | es |
dc.publisher | Universidad de Murcia, Departamento de Biologia Celular e Histiologia | es |
dc.relation | Sin financiación externa a la Universidad | es |
dc.rights | info:eu-repo/semantics/openAccess | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | hsa circ 0000567 | es |
dc.subject | miR 377 3p | es |
dc.subject | LUAD | es |
dc.subject | Gefitinib resistance | es |
dc.subject | ZFX | es |
dc.subject.other | CDU::6 - Ciencias aplicadas::61 - Medicina::616 - Patología. Medicina clínica. Oncología | es |
dc.title | Depleting hsa_circ_0000567 suppresses acquired gefitinib resistance and proliferation of lung adenocarcinoma cells through regulating the miR-377-3p / ZFX axis: an in vitro and in vivo study | es |
dc.type | info:eu-repo/semantics/article | es |
dc.identifier.doi | https://doi.org/ 10.14670/HH-18-431 | - |
Aparece en las colecciones: | Vol.37, nº7 (2022) |
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