<em>hsa_circ_0000523/miR‑let‑7b/METTL3</em> axis regulates proliferation, apoptosis and metastasis in the HCT116 human colorectal cancer cell line

Wang,Yansheng; Zhang,Baolei; Zhu,Yun; Zhang,Yong; Li,Li; Shen,Tao; Liu,Hao; Teng,Yirong

doi:10.3892/ol.2022.13306

hsa_circ_0000523/miR‑let‑7b/METTL3 axis regulates proliferation, apoptosis and metastasis in the HCT116 human colorectal cancer cell line

Authors:
- Yansheng Wang
- Baolei Zhang
- Yun Zhu
- Yong Zhang
- Li Li
- Tao Shen
- Hao Liu
- Yirong Teng
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Affiliations: Department of General Surgery, The 6th Affiliated Hospital of Kunming Medical University, The People's Hospital of Yuxi City, Yuxi, Yunnan 653100, P.R. China, Department of Gastrointestinal Surgery, Liaocheng People's Hospital Affiliated to Shandong University and Clinical School of Taishan Medical University, Liaocheng, Shandong 271099, P.R. China, Department of Health Screening Center, The 6th Affiliated Hospital of Kunming Medical University, The People's Hospital of Yuxi City, Yuxi, Yunnan 653100, P.R. China, Department of Colorectal Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650118, P.R. China, Department of General Surgery, The 6th Affiliated Hospital of Kunming Medical University, The People's Hospital of Yuxi City, Yuxi, Yunnan 653100, P.R. China, Department of General Practice, The 6th Affiliated Hospital of Kunming Medical University, The People's Hospital of Yuxi City, Yuxi, Yunnan 653100, P.R. China
Published online on: April 26, 2022 https://doi.org/10.3892/ol.2022.13306
Article Number: 186
Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 4.0].

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Abstract

Circular RNAs (circRNAs/circs) have gained attention as a class of potential biomarkers for the early detection of multiple cancers. However, the functions and mechanisms of circRNAs in the oncogenesis of human colorectal cancer (CRC) remain to be elucidated. The present study aimed to investigate the roles of hsa_circ_0000523 and its parental gene methyltransferase‑like 3 (METTL3) in regulating cell proliferation, apoptosis and invasion in the HCT116 human CRC cell line. To uncover the regulated function of hsa_circ_0000523 in HCT116 cells, a dual‑luciferase reporter assay, flow cytometry, reverse transcription‑quantitative PCR, Cell Counting Kit‑8 assay, cell invasion and western blot assay were used. In HCT116 cells, hsa_circ_0000523 indirectly regulated METTL3 expression by suppressing the transcription of microRNA (miR)‑let‑7b. The expression of METTL3 promoted cell proliferation and suppressed apoptosis. In the present study, it was found that miR‑let‑7b promoted cell viability and inhibited apoptosis and invasion, while circ_0000523 exerted the opposite effects. Higher levels of METTL3 expression were associated with more aggressive tumor invasion. The present results suggest that circRNAs and METTL3 may be applied for highly sensitive diagnosis of CRC and for predicting prognosis in patients who have undergone therapy.

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