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Luo H, Yang Y, Zhou Y, Bai X, Hou Y. 1,4,5,6,7,8‑Hexahydropyrido[4,3‑d]pyrimidine inhibits HepG2 cell proliferation, migration and invasion, and induces apoptosis through the upregulation of miR‑26b‑5p by targeting CDK8. Oncol Lett 2023; 25:260. [PMID: 37205919 PMCID: PMC10189852 DOI: 10.3892/ol.2023.13846] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/28/2023] [Indexed: 05/21/2023] Open
Abstract
1,4,5,6,7,8-Hexahydropyrido[4,3-d]pyrimidine (PPM) promotes apoptosis of HepG2 cells and serves a role in tumor suppression. However, the role of microRNA (miRNA) regulation in initiating apoptosis remains unclear. Therefore, the present study performed reverse transcription-quantitative PCR to investigate the association between PPM and miRNA, which demonstrated that PPM upregulated the expression of miR-26b-5p. Wound healing and Transwell assays showed that PPM inhibited the migration and invasion of HepG2 cells, and EdU staining experiments showed that PPM inhibited the proliferation of HepG2 cells. Transfection with miR-26b-5p inhibitor reversed the effects of PPM on HepG2 cells. Flow cytometry results showed that PPM promoted apoptosis of HepG2 cells by upregulating miRNA (miR)-26b-5p, and Western blotting results showed that PPM promoted the expression of apoptosis-associated protein Bax and inhibited the expression of Bcl-2 by upregulating miR-26b-5p. Using a proteomic approach combined with bioinformatics analysis, CDK8 was identified as a potential target of miR-26b-5p and was downregulated by miR-26b-5p overexpression. However, PPM induced HepG2 cell cycle arrest without the involvement of miR-26b-5p. Western blotting results showed that PPM upregulation of miR-26b-5p suppresses NF-κB/p65 signaling pathway in HepG2 cells by targeting of CDK8. The present results suggested that miR-26b-5p may function as a target gene of PPM and may serve a role in hepatocellular carcinoma treatment.
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Affiliation(s)
- Hanlin Luo
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Yang Yang
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Yanqiu Zhou
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Xianyong Bai
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
- Correspondence to: Professor Yun Hou or Professor Xianyong Bai, Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, 346 Guanhai Road, Laishan, Yantai, Shandong 264003, P.R. China, E-mail:
| | - Yun Hou
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
- Correspondence to: Professor Yun Hou or Professor Xianyong Bai, Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, 346 Guanhai Road, Laishan, Yantai, Shandong 264003, P.R. China, E-mail:
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Yi L, Liu Y, Xu A, Li S, Zhang H, Peng M, Li Z, Ren H, Dai J, Luo C, Xiao Y, Zhou X, Long Y. MicroRNA-26b-5p suppresses the proliferation of tongue squamous cell carcinoma via targeting proline rich 11 (PRR11). Bioengineered 2021; 12:5830-5838. [PMID: 34488538 PMCID: PMC8806564 DOI: 10.1080/21655979.2021.1969832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
MicroRNAs (miRNAs) have been proved to be involved in many biological processes during tumorigenesis and progression, including cell proliferation and cell cycle progression. However, the potential role of miR-26b-5p in tongue squamous cell carcinoma (TSCC) remains unclear. In the present study, we demonstrated that miR-26b-5p was decreased in TSCC tissues in both TCGA-TSCC subset and eight paired samples from TSCC patients, while Proline Rich 11 (PRR11) was obviously increased. Transfection of miR-26b-5p mimics inhibited CALL7 cell proliferation by arresting the cells at the S/G2 transition. Meanwhile, miR-26b-5p inhibitor had the opposite biological functions. The results of luciferase activity and RNA-pulldown assays indicated that miR-26b-5p directly targeted the PRR11 3' -untranslated region in CAL27 cells. Furthermore, the effects of miR-26b-5p on cell cycle regulation were reversed after treatment with siRNA against PRR11. In summary, our findings indicate that miR-26b-5p induce cell cycle arrest in TSCC by targeting PRR11. Hence, targeting miR-26b-5p could be a promising therapeutic strategy for the treatment of TSCC.
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Affiliation(s)
- Liang Yi
- Translational Medicine Centre.,Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Ying Liu
- Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, P. R. China
| | - Anji Xu
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Sha Li
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Hailin Zhang
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Mingjing Peng
- Translational Medicine Centre.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Zan Li
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | | | - Jie Dai
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Chenhui Luo
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Yazhou Xiao
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Xiao Zhou
- Translational Medicine Centre.,Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Ying Long
- Translational Medicine Centre.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
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Zhu L, Mei M. Interference of long non-coding RNA HAGLROS inhibits the proliferation and promotes the apoptosis of ovarian cancer cells by targeting miR-26b-5p. Exp Ther Med 2021; 22:879. [PMID: 34194557 PMCID: PMC8237406 DOI: 10.3892/etm.2021.10311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/17/2021] [Indexed: 12/29/2022] Open
Abstract
Ovarian cancer (OV) is the fifth most common type of cancer affecting women worldwide. Long non-coding RNAs (lncRNAs) serve essential roles in the progression of OV. As such, the present study aimed to investigate the specific role of HAGLR opposite strand lncRNA (HAGLROS) in OV and the underlying mechanism of action through which HAGLROS exerts its effects on OV cells. In the present study, the expression of HAGLROS in several OV cell lines was first detected using reverse transcription-quantitative PCR. HAGLROS was then silenced to evaluate cell viability, proliferation and apoptosis, which were determined using Cell Counting Kit-8, colony formation and TUNEL assays, respectively. Additionally, immunofluorescence staining and western blotting were used to confirm the expression profile of proliferation- and apoptosis-related proteins. Moreover, a dual luciferase reporter assay was used to verify the potential interactions between HAGLROS and microRNA (miR)-26b-5p. Subsequently, rescue assays were performed to investigate the effects of HAGLROS and miR-26b-5p on OV progression. The results indicated that HAGLROS was highly expressed in OV cells. Interference of HAGLROS led to a decrease in the proliferation, but an increase in the apoptosis of OV cells, accompanied by downregulated expression levels of Ki67 and Bcl-2, and upregulated expression levels of Bax and cleaved caspase-3. Further study revealed that HAGLROS acted as a sponge for miR-26b-5p and positively regulated its expression. miR-26b-5p inhibitor transfection partially reversed the effects of HAGLROS knockdown on the proliferation and apoptosis of OV cells. In conclusion, the results of the present study suggested that interference of HAGLROS suppressed the proliferation and promoted the apoptosis of OV cells through regulating miR-26b-5p, indicating that HAGLROS may be a promising biomarker in OV diagnosis and treatment.
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Affiliation(s)
- Lin Zhu
- Department of Gynecology, Beijing Haidian District Maternal and Child Health Hospital, Beijing 100080, P.R. China
| | - Mei Mei
- Department of Obstetrics and Gynecology, Xiangyang No. 1 People's Hospital Affiliated to Hubei Medical College, Xiangyang, Hubei 441000, P.R. China
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