Abstract
Objective
The significance of circular RNAs (circRNAs) has been identified in the progression of non-small cell lung cancer (NSCLC). Consistently, our study probed the functional actions of hsa_circ_0102899 (circ_0102899) in NSCLC cells.
Methods
circ_0102899 expression was checked in NSCLC tissues, as well as its correlation with clinical characteristics of patients, Using A459 cells, transfection to alter gene expression was performed, thus measuring the changes of proliferation, apoptosis, migration, and apoptosis, as well as epithelial–mesenchymal transition (EMT)-related proteins. circ_0102899’s effects in vivo were validated by tumor xenograft assay. Finally, the regulatory mechanism of circ_0102899 was investigated.
Results
circ_0102899 indicated a high-expression level in NSCLC tissues which was associated with NSCLC tumor characteristics. Functionally, circ_0102899 knockdown not only inhibited the growth and EMT process of NSCLC cells, but also inhibited tumor formation in vivo. In terms of the regulatory mechanism, circ_0102899 had a binding to miR-885-5p to target eukaryotic translation initiation factor 4γ2 (EIF4G2). circ_0102899 mediated miR-885–5/EIF4G2 axis to accelerate the process of cell malignant behavior in NSCLC.
Conclusion
circ_0102899 promotes EMT and metastasis in NSCLC by regulating the miR-885-5p/EIF4G2 axis.
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Data availability
Not applicable.
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Funding
The Project of Kunming Municipal Commission of Health and Family Planning [2018-SW (province)-003]: the value of blood、BALF、urine GM test in early diagnosis of non-granular IPA patients (Kunming Municipal Health Commission: 2020-03-02-112).
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The present study was approved by the Ethics Committee of Yan'an Af ffiliated Hospital of Kunming Medical University and written informed consent was provided by all patients prior to the study start All procedures were performed in accordance with the ethical standards of the Institutional Review Board and the Declaration of Helsinki, and its later parameters or comparable ethical standards(No. YA20197166).
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12094_2023_3220_MOESM1_ESM.tif
Supplementary Figure 1 Down-regulation of circ_0102899 can inhibit the proliferation, migration, invasion and EMT process of H1299 cells, and promote cell apoptosis. A. The transfection efficiency of sh-circ_0102899 in H1299 cells. B-E. Proliferation, apoptosis, migration and invasion ability of H1299 cells.F. EMT-related protein expression levels in H1299 cells. Measurement data are expressed as mean ± standard deviation; * P < 0.05, N = 3.Supplementary file1 (TIF 6210 kb)
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Wang, Y., He, J., Liang, Y. et al. Hsa_circ_0102899 promotes epithelial–mesenchymal transition in non-small cell lung cancer. Clin Transl Oncol 25, 3252–3262 (2023). https://doi.org/10.1007/s12094-023-03220-7
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DOI: https://doi.org/10.1007/s12094-023-03220-7