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Ghafouri-Fard S, Aghabalazade A, Shoorei H, Majidpoor J, Taheri M, Mokhtari M. The Impact of lncRNAs and miRNAs on Apoptosis in Lung Cancer. Front Oncol 2021; 11:714795. [PMID: 34367998 PMCID: PMC8335161 DOI: 10.3389/fonc.2021.714795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/08/2021] [Indexed: 12/13/2022] Open
Abstract
Apoptosis is a coordinated cellular process that occurs in several physiological situations. Dysregulation of apoptosis has been documented in numerous pathological situations, particularly cancer. Non-coding RNAs regulate apoptosis via different mechanisms. Lung cancer is among neoplastic conditions in which the role of non-coding RNAs in the regulation of apoptosis has been investigated. Non-coding RNAs that regulate apoptosis in lung cancer have functional interactions with PI3K/Akt, PTEN, GSK-3β, NF-κB, Bcl-2, Bax, p53, mTOR and other important cancer-related pathways. Globally, over-expression of apoptosis-blocking non-coding RNAs has been associated with poor prognosis of patients, while apoptosis-promoting ones have the opposite effect. In the current paper, we describe the impact of lncRNAs and miRNAs on cell apoptosis in lung cancer.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amin Aghabalazade
- Department of Pharmacology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Jamal Majidpoor
- Department of Anatomical Sciences, School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Mohammad Taheri
- Skull Base Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Mokhtari
- Critical Care Quality improvement Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Yan Y, Jin X, Sun H, Pang S, Kong X, Bu J, Xu S. MiR-139-5p Targetedly Regulates YAF2 and Mediates the AKT/P38 MAPK Signaling Pathway to Alleviate the Metastasis of Non-Small Cell Lung Cancer Cells and Their Resistance Against Cisplatin. Cancer Manag Res 2021; 13:3639-3650. [PMID: 33981163 PMCID: PMC8109024 DOI: 10.2147/cmar.s254671] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/03/2020] [Indexed: 12/16/2022] Open
Abstract
Objective To explore relevant mechanisms of miR-139-5p in alleviating the metastasis of non-small cell lung cancer cells (NSCLC) and their resistance against cisplatin. Methods Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot (WB) assays were carried out to determine the protein levels of miR-139-5p and YAF2, and cisplatin (DDP)-resistant NSCLC cell strains were established. Subsequently, an MTT assay was employed to evaluate the viability of the cell strains, a Transwell assay to evaluate cell invasion activity, and flow cytometry to analyze cell apoptosis rate. Finally, a Western blot assay was carried out to determine the protein levels of P-PI3K and p-p38. Results NSCLC tissues showed lower miR-139-5p expression and higher YAF2 expression than paracancerous tissues and human normal lung epithelial cells, and miR-139-5p was related to the prognosis of NSCLC patients. Overexpression of miR-139-5p or knock-down of YAF2 inhibited the proliferation and invasion of NSCLC cells and induced their apoptosis. Additionally, the dual-luciferase reporter assay verified a targeting relationship between miR-139-5p and YAF2. Overexpression of miR-139-5p and knockdown of YAF2 reversed the resistance of A549/DDP cells against DDP, inactivated p38 and Akt proteins, and inhibited the AKT/p38 MAPK signaling pathway. Furthermore, inhibiting the AKT/p38 MAPK signaling pathway with MK2206 resisted the effects of knock-down of miR-139-5p on DDP resistance in NSCLC cells. Conclusion MiR-139-5p targetedly regulates YAF2 and mediates the AKT/p38 MAPK signaling pathway to alleviate the metastasis of NSCLC cells and their resistance against cisplatin, which may be a novel target for improving the therapeutic effect on NSCLC.
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Affiliation(s)
- Yubo Yan
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - Xiangyuan Jin
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - HaoBo Sun
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - Sainan Pang
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - Xianglong Kong
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - Jianlong Bu
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
| | - Shidong Xu
- Department of Thoracic Surgery, Harbin Medical University Tumer Hospital, Harbin, Heilongjiang Province, 150000, People's Republic of China
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Gu H, Lin R, Zheng F, Zhang Q. ELK1 activated-long noncoding RNA LBX2-AS1 aggravates the progression of ovarian cancer through targeting miR-4784/KDM5C axis. J Mol Histol 2021; 52:31-44. [PMID: 33099720 DOI: 10.1007/s10735-020-09921-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 10/16/2020] [Indexed: 12/31/2022]
Abstract
As one of the most common cancers in female, ovarian cancer (OC) has become a serious public burden now. Mounting researches have indicated long noncoding RNAs (lncRNAs) can affect many biological processes including cancer development. LncRNA LBX2-AS1 was identified to be an oncogene in some cancers, but the role of LBX2-AS1 in OC remains to be elucidated. Bioinformatics analysis and experiments including ChIP, RT-qPCR, RIP, luciferase reporter, western blot and CCK-8 were performed to explore the role of LBX2-AS1 in OC. LBX2-AS1 expression was markedly increased in OC tissues and cell lines. Functionally, LBX2-AS1 silencing inhibited cell proliferation, migration and stemness but facilitated cell apoptosis in OC. Moreover, depletion of LBX2-AS1 suppressed tumor growth of OC in vivo. Mechanically, LBX2-AS1 was activated by transcriptional factor ELK1. ELK1 enhanced the expression of LBX2-AS1 in OC cells. In addition, miR-4784 was confirmed to be sponged by LBX2-AS1. There was a negative expression correlation between LBX2-AS1 and miR-4784 in OC tissues. Subsequently, KDM5C was identified to be a direct target of miR-4784 in OC cells. KDM5C was negatively regulated by miR-4784 and positively regulated by LBX2-AS1 in terms of expression level. Upregulation of KDM5C reversed the inhibitory effect of LBX2-AS1 depletion on the progression of OC. This study proved that ELK1 activated-LBX2-AS1 aggravated the progression of OC by targeting the miR-4784/KDM5C axis, suggesting that LBX2-AS2 may be a promising diagnostic biomarker of OC.
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Affiliation(s)
- Hangzhi Gu
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, No. 1 Fuxue Lane, Lucheng District, Wenzhou, Zhejiang, China
| | - Rongrong Lin
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, No. 1 Fuxue Lane, Lucheng District, Wenzhou, Zhejiang, China
| | - Feiyun Zheng
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, No. 1 Fuxue Lane, Lucheng District, Wenzhou, Zhejiang, China
| | - Qian Zhang
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, No. 1 Fuxue Lane, Lucheng District, Wenzhou, Zhejiang, China.
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Jin X, Yuan L, Liu B, Kuang Y, Li H, Li L, Zhao X, Li F, Bing Z, Chen W, Yang L, Li Q. Integrated analysis of circRNA-miRNA-mRNA network reveals potential prognostic biomarkers for radiotherapies with X-rays and carbon ions in non-small cell lung cancer. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1373. [PMID: 33313118 PMCID: PMC7723558 DOI: 10.21037/atm-20-2002] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background This work was aimed at exploring the regulatory network of non-coding RNA (ncRNA) especially circular RNA (circRNA) and microRNA (miRNA), in the sensitivity of non-small cell lung cancer (NSCLC) cells to low linear energy transfer (LET) X-ray and high-LET carbon ion irradiations. Methods The radioresistant NSCLC cell line A549-R11 was obtained from its parental cell line A549 through irradiation with X-rays of 2.0 Gy per fraction for 30 times. The sensitivities of A549, A549-R11 and H1299 cells exposed to X-rays and carbon ions were verified using the colony formation assay. A comprehensive circRNA-miRNA-mRNA network was constructed through the sequencing data in parental A549, acquired radioresistant A549-R11 and intrinsic radioresistant H1299 cells, and the network was further optimized according to the prognostic results from the TCGA and GEO databases. Results Based on high-throughput sequencing of circRNAs, we found that 40 circRNAs were up-regulated while 184 circRNAs were down-regulated in the intersection of the sets of A549-R11 and H1299 cells. Subsequently, a circRNA- miRNA-mRNA network, including 14 interactive pairs and 8 circRNAs, 4 overall survival-associated miRNAs, and 4 mRNAs, was constructed through the high-throughput data screening and bioinformatics methods. Conclusions Our results provide a complete understanding to the regulatory mechanism of the sensitivities to low-LET X-ray and high-LET carbon ion irradiations, and might be helpful to screen potential biomarkers for predicting the Carbon-ion radiotherapy (CIRT) and X-ray radiotherapy responses in NSCLC.
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Affiliation(s)
- Xiaodong Jin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Lingyan Yuan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Bingtao Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Yanbei Kuang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Hongbin Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Linying Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Xueshan Zhao
- Department of Oncology Radiotherapy, The First Hospital of Lanzhou University, Lanzhou, China
| | - Feifei Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Zhitong Bing
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Weiqiang Chen
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Lei Yang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
| | - Qiang Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou, China.,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, China
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Chen S, Shi F, Zhang W, Zhou Y, Huang J. miR-744-5p Inhibits Non-Small Cell Lung Cancer Proliferation and Invasion by Directly Targeting PAX2. Technol Cancer Res Treat 2020; 18:1533033819876913. [PMID: 31522607 PMCID: PMC6747846 DOI: 10.1177/1533033819876913] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Non-small cell lung cancer is one of the leading causes of cancer-related death worldwide. MicroRNAs have been characterized as critical regulators for cancer progression including non-small cell lung cancer. This work explored microRNA-744-5p expression in non-small cell lung cancer cell lines and normal cell line using quantitative real-time polymerase chain reaction. Connection of microRNA-744-5p and paired box 2 was analyzed with bioinformatic analysis, luciferase activity reporter assay, and Western blot. Effects of microRNA-744-5p or paired box 2 expression on non-small cell lung cancer cell behaviors were analyzed using a series of in vitro experiments. MicroRNA-744-5p was found to have decreased expression in non-small cell lung cancer cell lines compared with normal cell line. Paired box 2 was identified as a direct target for microRNA-744-5p in non-small cell lung cancer. Overexpression of microRNA-744-5p inhibits non-small cell lung cancer cell proliferation, colony formation, and cell invasion in vitro through targeting paired box 2. The present study provided novel insights into the biological functions of microRNA-744-5p in non-small cell lung cancer.
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Affiliation(s)
- Shaolin Chen
- Emergency Department, Jinan University, The Second Clinical Medical College, Shenzhen, People's Republic of China
| | - Fei Shi
- Emergency Department, Jinan University, The Second Clinical Medical College, Shenzhen, People's Republic of China
| | - Weixing Zhang
- Emergency Critical Center, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China
| | - Yuqi Zhou
- Division of Pulmonary and Critical Care, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Jing Huang
- Division of Pulmonary and Critical Care, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
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Luo X, Wei J, Yang FL, Pang XX, Shi F, Wei YX, Liao BY, Wang JL. Exosomal lncRNA HNF1A-AS1 affects cisplatin resistance in cervical cancer cells through regulating microRNA-34b/TUFT1 axis. Cancer Cell Int 2019; 19:323. [PMID: 31827397 PMCID: PMC6889431 DOI: 10.1186/s12935-019-1042-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/19/2019] [Indexed: 12/22/2022] Open
Abstract
Background There is growing evidence of the role of long non-coding RNAs (lncRNAs) in cervical cancer (CC). The objective was to discuss whether exosomal lncRNA HNF1A-AS1 impacted drug resistance in CC via binding to microRNA-34b (miR-34b) and regulating TUFT1 expression. Methods The expression of HNF1A-AS1 in normal cervical epithelial cells, cisplatin (DDP)-sensitive cell line (HeLa/S) and DDP-resistant cell line (HeLa/DDP) cells were detected. HeLa/S and HeLa/DDP cells were interfered with HNF1A-AS1 to determine IC50, proliferation, colony formation and apoptosis of CC cells. The exosomes were isolated and identified. Subcellular localization of HNF1A-AS1, expression of miR-34b and TUFT1 in receptor cells were also verified. The binding site between HNF1A-AS1 and miR-34b, together with miR-34b and TUFT1 were confirmed. Tumorigenic ability of cells in nude mice was also detected. Results HNF1A-AS1 was upregulated in DDP-resistant cell line HeLa/DDP. Silencing HNF1A-AS1 suppressed CC cell proliferation and promoted its apoptosis. HNF1A-AS1 was found to act as a competing endogenous RNA (ceRNA) of miR-34b to promote the expression of TUFT1. Exosomes shuttled HNF1A-AS1 promoted the proliferation and drug resistance of CC cells and inhibited their apoptosis by upregulating the expression of TUFT1 and downregulating miR-34b. Furthermore, suppressed exosomal HNF1A-AS1 in combination with DDP inhibited tumor growth in nude mice. Conclusion Our study provides evidence that CC-secreted exosomes carrying HNF1A-AS1 as a ceRNA of miR-34b to promote the expression of TUFT1, thereby promoting the DDP resistance in CC cells.
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Affiliation(s)
- Xiaoqiong Luo
- 1Center of Reproductive Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Zhongshan Second Road 18th, Baise, 533000 Guangxi China
| | - Jingxi Wei
- 1Center of Reproductive Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Zhongshan Second Road 18th, Baise, 533000 Guangxi China
| | - Feng-Lian Yang
- 2Youjiang Medical College for Nationalities, Baise, 533000 People's Republic of China
| | - Xiao-Xia Pang
- 2Youjiang Medical College for Nationalities, Baise, 533000 People's Republic of China
| | - Feng Shi
- 2Youjiang Medical College for Nationalities, Baise, 533000 People's Republic of China
| | - Yu-Xia Wei
- 1Center of Reproductive Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Zhongshan Second Road 18th, Baise, 533000 Guangxi China
| | - Bi-Yun Liao
- 1Center of Reproductive Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Zhongshan Second Road 18th, Baise, 533000 Guangxi China
| | - Jun-Li Wang
- 1Center of Reproductive Medicine, Affiliated Hospital of Youjiang Medical College for Nationalities, Zhongshan Second Road 18th, Baise, 533000 Guangxi China
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Wang S, Sun H, Zhan X, Wang Q. MicroRNA‑718 serves a tumor‑suppressive role in non‑small cell lung cancer by directly targeting CCNB1. Int J Mol Med 2019; 45:33-44. [PMID: 31746372 PMCID: PMC6889928 DOI: 10.3892/ijmm.2019.4396] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 08/13/2019] [Indexed: 12/19/2022] Open
Abstract
MicroRNA‑718 (miR‑718) serves crucial roles in tumorigenesis and in the progression of a number of cancers. However, the expression profile, specific functions and mechanisms of action of miR‑718 in non‑small cell lung cancer (NSCLC) are still elusive. The aims of the present study were to quantify the expression of miR‑718, determine its biological roles and elucidate the molecular mechanisms responsible for its activities in NSCLC cells. Reverse transcription‑quantitative PCR was carried out to assess miR‑718 expression in NSCLC tissue samples and cell lines. The Cell Counting Kit‑8 assay, flow cytometry, cell migration and invasion assays, and a tumor xenograft experiment were performed to evaluate the effects of miR‑718 overexpression on the malignant biological behaviors of NSCLC cells. miR‑718 expression was demonstrated to be significantly decreased in NSCLC tissue samples and cell lines. This reduced expression was significantly associated with tumor, node, metastasis stage, tumor size, lymph node metastasis and poor overall survival among patients with NSCLC. Exogenous miR‑718 expression suppressed NSCLC cell proliferation, migration and invasion, and promoted apoptosis in vitro; whereas it hindered tumor growth in vivo. Experiments to elucidate the mechanisms involved revealed that miR‑718 functions by directly targeting cyclin B1 (CCNB1) mRNA. CCNB1 expression was found to be upregulated in NSCLC and inversely correlated with miR‑718 levels. CCNB1 depletion had effects similar to those of miR‑718 overexpression in NSCLC cells. Furthermore, restoration of CCNB1 expression attenuated the tumor‑suppressive effects of miR‑718 overexpression in NSCLC cells. These results indicated that miR‑718 suppressed NSCLC progression in vitro and in vivo by directly targeting CCNB1 mRNA, which may indicate a potential target for the diagnosis and treatment of this fatal disease.
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Affiliation(s)
- Shu Wang
- Department of Radiotherapy, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Hongmei Sun
- Department of Thoracic Oncosurgery, Jilin Province Tumor Hospital, Changchun, Jilin 130012, P.R. China
| | - Xiaokai Zhan
- Department of Thoracic Oncosurgery, Jilin Province Tumor Hospital, Changchun, Jilin 130012, P.R. China
| | - Qiwen Wang
- Department of Thoracic Oncosurgery, Jilin Province Tumor Hospital, Changchun, Jilin 130012, P.R. China
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Ye K, Xu C, Hui T. MiR-34b inhibits the proliferation and promotes apoptosis in colon cancer cells by targeting Wnt/β-catenin signaling pathway. Biosci Rep 2019; 39:BSR20191799. [PMID: 31467172 PMCID: PMC6822525 DOI: 10.1042/bsr20191799] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/16/2019] [Accepted: 07/24/2019] [Indexed: 12/18/2022] Open
Abstract
Colon cancer is one of the leading cause of cancer deaths that is severely threatening human health. Several microRNAs (miRNAs) have been found to be associated with the tumor genesis of colon cancer. The present study determined the expression of miR-34b in patients with colon cancer and studied the molecular mechanism of miR-34b in the proliferation and apoptosis of human colon cancer Caco-2 cells in vitro. In colon cancer patients, the expression of miR-34b was decreased in tumor tissues when compared with the adjacent non-tumor tissues. Furthermore, overexpression of miR-34b inhibited proliferation, migration and invasion, while promoted apoptosis in colon cancer cells. The online bioinformatics sites predicted possible regulatory genes of miR-34b and luciferase reporter assay verify that β-catenin was a direct target of miR-34b. Furthermore, miR-34b overexpression significantly decreased the expression of genes associated with Wnt/β-catenin signaling pathway. In conclusion, our results suggest that miR-34b may inhibit migration and invasion of human colon cancer cells by regulating Wnt/β-catenin signaling and miR-34b may be a key target for the treatment and diagnosis of colon cancer.
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Affiliation(s)
- Kailun Ye
- Department of Surgery, First People’s Hospital of Tonglu, Hangzhou 311500, Zhejiang, China
| | - Chunhua Xu
- Department of Surgery, First People’s Hospital of Tonglu, Hangzhou 311500, Zhejiang, China
| | - Tongguan Hui
- Department of Surgery, First People’s Hospital of Tonglu, Hangzhou 311500, Zhejiang, China
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