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Wang Y, Chen Y, Yang F, Yu X, Chu Y, Zhou J, Yan Y, Xi J. MiR-4465-modified mesenchymal stem cell-derived small extracellular vesicles inhibit liver fibrosis development via targeting LOXL2 expression. J Zhejiang Univ Sci B 2024; 25:594-604. [PMID: 39011679 PMCID: PMC11254680 DOI: 10.1631/jzus.b2300305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/29/2023] [Indexed: 05/23/2024]
Abstract
Liver fibrosis is a significant health burden, marked by the consistent deposition of collagen. Unfortunately, the currently available treatment approaches for this condition are far from optimal. Lysyl oxidase-like protein 2 (LOXL2) secreted by hepatic stellate cells (HSCs) is a crucial player in the cross-linking of matrix collagen and is a significant target for treating liver fibrosis. Mesenchymal stem cell-derived small extracellular vesicles (MSC-sEVs) have been proposed as a potential treatment option for chronic liver disorders. Previous studies have found that MSC-sEV can be used for microRNA delivery into target cells or tissues. It is currently unclear whether microRNA-4465 (miR-4465) can target LOXL2 and inhibit HSC activation. Additionally, it is uncertain whether MSC-sEV can be utilized as a gene therapy vector to carry miR-4465 and effectively inhibit the progression of liver fibrosis. This study explored the effect of miR-4465-modified MSC-sEV (MSC-sEVmiR-4465) on LOXL2 expression and liver fibrosis development. The results showed that miR-4465 can bind specifically to the promoter of the LOXL2 gene in HSC. Moreover, MSC-sEVmiR-4465 inhibited HSC activation and collagen expression by downregulating LOXL2 expression in vitro. MSC-sEVmiR-4465 injection could reduce HSC activation and collagen deposition in the CCl4-induced mouse model. MSC-sEVmiR-4465 mediating via LOXL2 also hindered the migration and invasion of HepG2 cells. In conclusion, we found that MSC-sEV can deliver miR-4465 into HSC to alleviate liver fibrosis via altering LOXL2, which might provide a promising therapeutic strategy for liver diseases.
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Affiliation(s)
- Yanjin Wang
- Department of Laboratory Medicine, Wujin Hospital Affiliated with Jiangsu University, Jiangsu University, Changzhou 213017, China
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Yifei Chen
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Fuji Yang
- Department of Laboratory Medicine, Wujin Hospital Affiliated with Jiangsu University, Jiangsu University, Changzhou 213017, China
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Xiaolong Yu
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Clinical College of Xuzhou Medical University, Changzhou 213017, China
| | - Ying Chu
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Clinical College of Xuzhou Medical University, Changzhou 213017, China
| | - Jing Zhou
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Clinical College of Xuzhou Medical University, Changzhou 213017, China
| | - Yongmin Yan
- Department of Laboratory Medicine, Wujin Hospital Affiliated with Jiangsu University, Jiangsu University, Changzhou 213017, China. ,
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Clinical College of Xuzhou Medical University, Changzhou 213017, China. ,
| | - Jianbo Xi
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Clinical College of Xuzhou Medical University, Changzhou 213017, China.
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2
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Le MT, Nguyen HT, Nguyen XH, Do XH, Mai BT, Ngoc Nguyen HT, Trang Than UT, Nguyen TH. Regulation and therapeutic potentials of microRNAs to non-small cell lung cancer. Heliyon 2023; 9:e22080. [PMID: 38058618 PMCID: PMC10696070 DOI: 10.1016/j.heliyon.2023.e22080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 12/08/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for 80%-85% of total cases and leading to millions of deaths worldwide. Drug resistance is the primary cause of treatment failure in NSCLC, which urges scientists to develop advanced approaches for NSCLC treatment. Among novel approaches, the miRNA-based method has emerged as a potential approach as it allows researchers to modulate target gene expression. Subsequently, cell behaviors are altered, which leads to the death and the depletion of cancer cells. It has been reported that miRNAs possess the capacity to regulate multiple genes that are involved in various signaling pathways, including the phosphoinositide 3-kinase, receptor tyrosine kinase/rat sarcoma virus/mitogen-activated protein kinase, wingless/integrated, retinoblastoma, p53, transforming growth factor β, and nuclear factor-kappa B pathways. Dysregulation of these signaling pathways in NSCLC results in abnormal cell proliferation, tissue invasion, and drug resistance while inhibiting apoptosis. Thus, understanding the roles of miRNAs in regulating these signaling pathways may enable the development of novel NSCLC treatment therapies. However, a comprehensive review of potential miRNAs in NSCLC treatment has been lacking. Therefore, this review aims to fill the gap by summarizing the up-to-date information on miRNAs regarding their targets, impact on cancer-associated pathways, and prospective outcomes in treating NSCLC. We also discuss current technologies for delivering miRNAs to the target cells, including virus-based, non-viral, and emerging extracellular vesicle-based delivery systems. This knowledge will support future studies to develop an innovative miRNA-based therapy and select a suitable carrier to treat NSCLC effectively.
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Affiliation(s)
- Mai Thi Le
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
- Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, 100000, Viet Nam
| | - Huyen-Thu Nguyen
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
| | - Xuan-Hung Nguyen
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
- College of Health Sciences, Vin University, Hanoi, 100000, Viet Nam
- Vinmec-VinUni Institute of Immunology, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
| | - Xuan-Hai Do
- Department of Gastroenterology, 108 Military Central Hospital, Hanoi, Viet Nam
| | - Binh Thanh Mai
- Department of Practical and Experimental Surgery, Vietnam Military Medical University, 160 Phung Hung Street, Phuc La, Ha Dong, Hanoi, Viet Nam
| | - Ha Thi Ngoc Nguyen
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
| | - Uyen Thi Trang Than
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
- Vinmec-VinUni Institute of Immunology, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
| | - Thanh-Hong Nguyen
- Vinmec Hi-tech Center, Vinmec Healthcare System, Hanoi, 100000, Viet Nam
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3
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Gao M, Li Y, Cao P, Liu H, Chen J, Kang S. Exploring the therapeutic potential of targeting polycomb repressive complex 2 in lung cancer. Front Oncol 2023; 13:1216289. [PMID: 37909018 PMCID: PMC10613995 DOI: 10.3389/fonc.2023.1216289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 10/02/2023] [Indexed: 11/02/2023] Open
Abstract
The pathogenesis of lung cancer (LC) is a multifaceted process that is influenced by a variety of factors. Alongside genetic mutations and environmental influences, there is increasing evidence that epigenetic mechanisms play a significant role in the development and progression of LC. The Polycomb repressive complex 2 (PRC2), composed of EZH1/2, SUZ12, and EED, is an epigenetic silencer that controls the expression of target genes and is crucial for cell identity in multicellular organisms. Abnormal expression of PRC2 has been shown to contribute to the progression of LC through several pathways. Although targeted inhibition of EZH2 has demonstrated potential in delaying the progression of LC and improving chemotherapy sensitivity, the effectiveness of enzymatic inhibitors of PRC2 in LC is limited, and a more comprehensive understanding of PRC2's role is necessary. This paper reviews the core subunits of PRC2 and their interactions, and outlines the mechanisms of aberrant PRC2 expression in cancer and its role in tumor immunity. We also summarize the important role of PRC2 in regulating biological behaviors such as epithelial mesenchymal transition, invasive metastasis, apoptosis, cell cycle regulation, autophagy, and PRC2-mediated resistance to LC chemotherapeutic agents in LC cells. Lastly, we explored the latest breakthroughs in the research and evaluation of medications that target PRC2, as well as the latest findings from clinical studies investigating the efficacy of these drugs in the treatment of various human cancers.
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Affiliation(s)
- Min Gao
- Department of Thoracic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
- Inner Mongolia Medical University, First Clinical Medical College, Hohhot, China
| | - Yongwen Li
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Peijun Cao
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Hongyu Liu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Jun Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin, China
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Shirong Kang
- Department of Thoracic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
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4
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Murata M, Bilim V, Shirono Y, Kazama A, Hiruma K, Tasaki M, Tomita Y. MicroRNAs as Potential Regulators of GSK-3β in Renal Cell Carcinoma. Curr Issues Mol Biol 2023; 45:7432-7448. [PMID: 37754254 PMCID: PMC10529713 DOI: 10.3390/cimb45090470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023] Open
Abstract
The prognosis of patients with advanced renal cell carcinoma (RCC) has improved with newer therapies, including molecular-targeted therapies and immuno-oncology agents. Despite these therapeutic advances, many patients with metastatic disease remain uncured. Inhibition of glycogen synthase kinase-3β (GSK-3β) is a promising new therapeutic strategy for RCC; however, the precise regulatory mechanism has not yet been fully elucidated. MicroRNAs (miRNAs) act as post-translational regulators of target genes, and we investigated the potential regulation of miRNAs on GSK-3β in RCC. We selected nine candidate miRNAs from three databases that could potentially regulate GSK-3β. Among these, hsa-miR-4465 (miR-4465) was downregulated in RCC cell lines and renal cancer tissues. Furthermore, luciferase assays revealed that miR-4465 directly interacted with the 3' untranslated region of GSK-3β, and Western blot analysis showed that overexpression of miR-4465 significantly decreased GSK-3β protein expression. Functional assays showed that miR-4465 overexpression significantly suppressed cell invasion of A498 and Caki-1 cells; however, cell proliferation and migration were suppressed only in Caki-1 and A498 cells, respectively, with no effect on cell cycle and apoptosis. In conclusion, miR-4465 regulates GSK-3β expression but does not consistently affect RCC cell function as a single molecule. Further comprehensive investigation of regulatory networks is required in this field.
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Affiliation(s)
- Masaki Murata
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
| | - Vladimir Bilim
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
- Department of Urology, Kameda Daiichi Hospital, Niigata 950-0165, Japan
| | - Yuko Shirono
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
| | - Akira Kazama
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Kaede Hiruma
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
| | - Masayuki Tasaki
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
| | - Yoshihiko Tomita
- Department of Urology, Division of Molecular Oncology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (V.B.); (Y.S.); (A.K.); (K.H.); (M.T.); (Y.T.)
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5
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Entezari M, Taheriazam A, Paskeh MDA, Sabouni E, Zandieh MA, Aboutalebi M, Kakavand A, Rezaei S, Hejazi ES, Saebfar H, Salimimoghadam S, Mirzaei S, Hashemi M, Samarghandian S. The pharmacological and biological importance of EZH2 signaling in lung cancer. Biomed Pharmacother 2023; 160:114313. [PMID: 36738498 DOI: 10.1016/j.biopha.2023.114313] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Up to 18% of cancer-related deaths worldwide are attributed to lung tumor and global burden of this type of cancer is ascending. Different factors are responsible for development of lung cancer such as smoking, environmental factors and genetic mutations. EZH2 is a vital protein with catalytic activity and belongs to PCR2 family. EZH2 has been implicated in regulating gene expression by binding to promoter of targets. The importance of EZH2 in lung cancer is discussed in current manuscript. Activation of EZH2 significantly elevates the proliferation rate of lung cancer. Furthermore, metastasis and associated molecular mechanisms including EMT undergo activation by EZH2 in enhancing the lung cancer progression. The response of lung cancer to therapy can be significantly diminished due to EZH2 upregulation. Since EZH2 increases tumor progression, anti-cancer agents suppressing its expression reduce malignancy. In spite of significant effort in understanding modulatory function of EZH2 on other pathways, it appears that EZH2 can be also regulated and controlled by other factors that are described in current review. Therefore, translating current findings to clinic can improve treatment and management of lung cancer patients.
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Affiliation(s)
- Maliheh Entezari
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mahshid Deldar Abad Paskeh
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Eisa Sabouni
- Faculty of Veterinary Medicine, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | - Mohammad Arad Zandieh
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Maryam Aboutalebi
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Amirabbas Kakavand
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Shamin Rezaei
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Elahe Sadat Hejazi
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Hamidreza Saebfar
- European University Association, League of European Research Universities, university of milan, Italy
| | - Shokooh Salimimoghadam
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran.
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Saeed Samarghandian
- Healthy Ageing Research Centre, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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6
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Cao W, Zeng Z, He Z, Lei S. Hypoxic pancreatic stellate cell-derived exosomal mirnas promote proliferation and invasion of pancreatic cancer through the PTEN/AKT pathway. Aging (Albany NY) 2021; 13:7120-7132. [PMID: 33653966 PMCID: PMC7993707 DOI: 10.18632/aging.202569] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023]
Abstract
Pancreatic stellate cells (PSCs) are important components of the tumor microenvironment in pancreatic cancer (PC) and contribute to its development and metastasis through mechanisms that remain incompletely characterized. Tumor hypoxia affects the function and behavior of PC and stromal cells, and can alter exosomal content to modify cell-cell communication. The present study explored the effects of exosomal miRNAs produced by hypoxia-preconditioned PSCs on the growth and metastatic potential of PC cells. Subcutaneous xenografts and liver metastasis mouse models revealed increased tumorigenic potential upon co-implantation of PC cells and PSCs as compared to PC cells alone. Screening miRNA profiles of mouse plasma exosomes and cultured PSCs, followed by miRNA overexpression and inhibition assays, enabled us to identify miR-4465 and miR-616-3p as prominent hypoxia-induced, PSC-derived, exosomal miRNAs promoting PC cell proliferation, migration, and invasion. Proteomics analysis of PC cells incubated with exosomes derived from hypoxic PSCs showed significant downregulation of PTEN. Dual-luciferase reporter assays and western blotting showed that both miR-4465 and miR-616-3p target PTEN and activate AKT signaling in PC cells. We conclude that hypoxia upregulates miR-4465 and miR-616-3p expression in PSC-derived exosomes. Following exosome uptake, these miRNAs promote PC progression and metastasis by suppressing the PTEN/AKT pathway.
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Affiliation(s)
- Wenpeng Cao
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang 550009, Guizhou, China
| | - Zhirui Zeng
- Department of Physiology, School of Basic Medicine, Guizhou Medical University, Guiyang 550009, Guizhou, China
| | - Zhiwei He
- Department of Hepatic-Biliary-Pancreatic Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang 550009, Guizhou, China
| | - Shan Lei
- Department of Physiology, School of Basic Medicine, Guizhou Medical University, Guiyang 550009, Guizhou, China
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7
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Zhao H, Wang A, Zhang Z. LncRNA SDHAP1 confers paclitaxel resistance of ovarian cancer by regulating EIF4G2 expression via miR-4465. J Biochem 2021; 168:171-181. [PMID: 32211849 DOI: 10.1093/jb/mvaa036] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/16/2020] [Indexed: 02/06/2023] Open
Abstract
Ovarian cancer has ranked as one of the leading causes of female morbidity and mortality around the world, which affects ∼239,000 patients and causes 152,000 deaths every year. Chemotherapeutic resistance of ovarian cancer remains a devastating actuality in clinic. The aberrant upregulation of long non-coding RNA succinate dehydrogenase complex flavoprotein subunit A pseudogene 1 (lncRNA SDHAP1) in the Paclitaxel (PTX)-resistant ovarian cancer cell lines has been reported. However, studies focussed on SDHAP1 in its regulatory function of chemotherapeutic resistance in ovarian cancer are limited, and the detailed mechanisms remain unclear. In this study, we demonstrated that SDHAP1 was upregulated in PTX-resistant SKOV3 and Hey-8 ovarian cancer cell lines while the level of miR-4465 was downregulated. Knocking-down SDHAP1 induced re-acquirement of chemo-sensitivity to PTX in ovarian cancer cells in vitro. Mechanically, SDHAP1 upregulated the expression of EIF4G2 by sponging miR-4465 and thus facilitated the PTX-induced apoptosis in ovarian cancer cells. The regulation network involving SDHAP1, miR-4465 and EIF4G2 could be a potential therapy target for the PTX-resistant ovarian cancer.
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Affiliation(s)
- Hui Zhao
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital, No. 67 of Dongchang West Road, Liaocheng 252000, Shandong, China
| | - Aixia Wang
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital, No. 67 of Dongchang West Road, Liaocheng 252000, Shandong, China
| | - Zhiwei Zhang
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital, No. 67 of Dongchang West Road, Liaocheng 252000, Shandong, China
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8
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Gao Z, Ye X, Bordeaux A, Hettich S, Lin S, Han F, Jia Y. miR-26b regulates cell proliferation and apoptosis of CD117+CD44+ ovarian cancer stem cells by targeting PTEN. Eur J Histochem 2021; 65:3186. [PMID: 33634678 PMCID: PMC7883108 DOI: 10.4081/ejh.2021.3186] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023] Open
Abstract
Ovarian cancer (OC) is the one of the most common cancer in women globally. However, it still represents the most dangerous gynecologic malignancy even with the advances in detection and therapeutics. Thus, there is an urgent need in finding more effective therapeutic options for OC patients including cancer stem cells (CSC). MicroRNAs (miRNAs) are small, endogenous, and non-coding RNAs that play critical roles in the progression of various types of tumor. Our aim of this study was to find the regulatory function of microRNA-26 (miRNA-26b) on the cell proliferation and apoptosis of ovarian CSCs. Our studies show that miR-26b is under-regulated in human CD117+CD44+ ovarian CSCs. The miR-26b overexpression inhibits the cell proliferation and promotes cell apoptosis. Moreover, phosphatase and tensin homolog (PTEN) is found to be a functional target of miR-26b. Moreover, PTEN overexpression reversed the effects of miR-26b on the cell proliferation and apoptosis. PTEN overexpression remarkably accelerated the cell proliferation, and inhibited cell apoptosis. These results indicate that miR-26b regulates cell proliferation and apoptosis of CD117+CD44+ ovarian CSCs by targeting PTEN.>.
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Affiliation(s)
- Zubiao Gao
- Department of Obstetrics and Gynecology, Foshan Chancheng Central Hospital, Foshan, Guangdong.
| | - Xiaofeng Ye
- Department of Obstetrics and Gynecology, Foshan Chancheng Central Hospital, Foshan, Guangdong.
| | - Anne Bordeaux
- Department of Pathology, Medical Center, University of Freiburg, Baden-Wuerttemberg.
| | - Stanka Hettich
- Department of Obstetrics and Gynecology, Medical Center, University of Freiburg, Baden-Wuerttemberg.
| | - Siyao Lin
- Department of Obstetrics and Gynecology, Foshan Chancheng Central Hospital, Foshan, Guangdong.
| | - Fang Han
- Department of Obstetrics and Gynecology, Foshan Chancheng Central Hospital, Foshan, Guangdong.
| | - Yan Jia
- Department of Reproductive Immunology, Chengdu Xi' nan Gynecology Hospital, Chengdu, Sichuan.
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9
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Tang X, Wen X, Li Z, Wen D, Lin L, Liu J, Li M. Hsa_circ_0102171 aggravates the progression of cervical cancer through targeting miR-4465/CREBRF axis. J Cell Physiol 2020; 236:4973-4984. [PMID: 33615474 DOI: 10.1002/jcp.30210] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022]
Abstract
Cervical cancer (CC) has caused numerous cancer-related deaths in women. Recent years, circular RNAs have been reported as vital factors in CC tumorigenesis. Our current study focused on the role of hsa_circ_0102171 (called circ_0102171 subsequently) in CC. At first, we applied reverse transcription polymerase chain reaction to detect the expression of circ_0102171 in CC tissues and cells. Subsequently, we silenced circ_0102171 to conduct loss-of-function assays, including cell counting kit-8 assay, 5-ethynyl-2'-deoxyuridine staining, Transwell assay, and flow cytometry analysis. Interestingly, we discovered that circ_0102171 expressed at a high level in CC tissues and cells. Functionally, silencing circ_0102171 prohibited cell proliferation, migration and invasion, and strengthened cell apoptosis in CC in vitro. Mechanistic investigations revealed that circ_0102171 could act as a sponge for miR-4465. Gain-of-function assays demonstrated that miR-4465 hindered the growth and migration of CC cells. Moreover, circ_0102171 enhanced the level of CREB3 regulatory factor (CREBRF) which was the downstream target of miR-4465. Rescue assays suggested that CREBRF and miR-4465 could involve in circ_0102171-mediated CC progression. Finally, in vivo data supported that silencing circ_0102171 hindered CC cell growth. In conclusion, circ_0102171 aggravates CC progression via targeting miR-4465/CREBRF axis.
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Affiliation(s)
- Xi Tang
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaomin Wen
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhouyu Li
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Danxia Wen
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ling Lin
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinquan Liu
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Mingyi Li
- The 5th Ward of Radiotherapy Department of Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong, China
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10
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Zhong Q, Wang Z, Liao X, Wu R, Guo X. LncRNA GAS5/miR‑4465 axis regulates the malignant potential of nasopharyngeal carcinoma by targeting COX2. Cell Cycle 2020; 19:3004-3017. [PMID: 33092435 DOI: 10.1080/15384101.2020.1816280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Nasopharyngeal carcinoma is a malignant tumor that not only negatively affects the physical and mental health but also the quality of life of the patients. Growth arrest-specific transcript 5 (GAS5) is a common long-chain non-coding RNA (lncRNA) that has been reported to participate in the development of various cancers. However, the biological functions of lncRNA GAS5 in the occurrence and development of nasopharyngeal carcinoma are elusive. The expression of lncRNA GAS5 in nasopharyngeal carcinoma and normal samples were analyzed. Bioinformatic tool was utilized to predict the potential function of lncRNA in nasopharyngeal carcinoma. Transplanted mice were used for in vivo experiments. We observed that the expression of lncRNA GAS5 was upregulated in nasopharyngeal carcinoma tissues and cells. Down-regulation of lncRNA GAS5 inhibited the proliferation and promoted apoptosis of nasopharyngeal carcinoma cells. The expression of miR-4465 was down regulated in nasopharyngeal carcinoma tissues and cells. LncRNA GAS5 could directly bind to miR-4465 and regulated the expression of miR-4465. It was further confirmed that miR-4465 could directly bind with COX2 and inhibit the expression of COX2. Down-regulation of lncRNA GAS5 suppressed tumor growth, promoted the expression levels of miR-18a-5p and suppressed the expression of COX2 in vivo. LncRNA GAS5 regulated nasopharyngeal carcinoma malignancy through targeting miR-4465 and modulating COX2. The GAS5/miR-4465/COX2 axis in nasopharyngeal carcinoma pathogenesis was confirmed, which would provide a new therapeutic target for nasopharyngeal carcinoma.
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Affiliation(s)
- Qiong Zhong
- Department of Oncology, People's Hospital of Ganzhou , Ganzhou City, Jiangxi Province, PR. China
| | - Zongqi Wang
- Department of Oncology, People's Hospital of Ganzhou , Ganzhou City, Jiangxi Province, PR. China
| | - Xiaohong Liao
- Department of Oncology, People's Hospital of Ganzhou , Ganzhou City, Jiangxi Province, PR. China
| | - Renrui Wu
- Department of Oncology, People's Hospital of Ganzhou , Ganzhou City, Jiangxi Province, PR. China
| | - Xiaoqing Guo
- Department of Oncology, People's Hospital of Ganzhou , Ganzhou City, Jiangxi Province, PR. China
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11
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Li C, Li Y, Lu Y, Niu Z, Zhao H, Peng Y, Li M. miR-26 family and its target genes in tumorigenesis and development. Crit Rev Oncol Hematol 2020; 157:103124. [PMID: 33254041 DOI: 10.1016/j.critrevonc.2020.103124] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 08/27/2020] [Accepted: 10/02/2020] [Indexed: 12/12/2022] Open
Abstract
The microRNA-26 family, including miR-26a, miR-26b, miR-1297 and miR-4465, is a group of broadly conserved small RNAs with identical sequences at the seed region. The expression of miR-26 could be induced by hypoxia via a HIF-dependent mechanism, and up-regulated during multiple cell differentiation. Accumulating studies have demonstrated that miR-26 family members could be detected in many different kinds of tumors, and their validated target genes are involved in cell metabolism, proliferation, differentiation, apoptosis, invasion and metastasis. The expression of miR-26 might be a potentially valuable biomarker and a new target for cancer therapy. In this review, miR-26 family and its target genes in tumorigenesis and development will be summarized as follows.
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Affiliation(s)
- Chuangang Li
- The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China.
| | - Yongyi Li
- University of Virginia, Charlottesville, VA 22903, USA
| | - Yufeng Lu
- Dalian Medical University, Dalian 116044, China
| | - Zhaorui Niu
- Dalian Medical University, Dalian 116044, China
| | - Henan Zhao
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Yan Peng
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Molin Li
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
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12
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Expression level of VLDL receptor and VLDL-c levels in the malignant and benign breast tumors: The correlation with miRNA-4465 and miRNA-1297. Mol Cell Probes 2020; 53:101624. [DOI: 10.1016/j.mcp.2020.101624] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/24/2020] [Accepted: 06/24/2020] [Indexed: 01/07/2023]
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13
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Mosapour A, Karami Tehrani FS, Atri M. Differential expression of miR-1297, miR-3191-5p, miR-4435, and miR-4465 in malignant and benign breast tumors. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2020; 23:1045-1052. [PMID: 32952951 PMCID: PMC7478249 DOI: 10.22038/ijbms.2020.44581.10421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/09/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVES MicroRNAs (miRs) are a class of small non-coding RNAs which are associated with tumor growth and progression. In the present study, we assessed the expression of selected miRs in malignant, benign, and adjacent normal breast tissues. MATERIALS AND METHODS The expression of miR-1297, miR-3191-5P, miR-4435, and miR-4465 were evaluated in malignant (n=50), benign (n=35), and adjacent normal breast tissues (n=20) using qRT-PCR. Receiver operating characteristic (ROC) curves and the area under the ROC curve (AUC) were generated for evaluating the diagnostic values of miRs. To evaluate diagnostic efficacy, miRs-based score was obtained using the logistic regression model. RESULTS Among malignant tumors, the expression of miR-1297, miR-3191-5p, and miR-4435 was significantly lower (P=0.024, P<0.001 and P=0.031), respectively. The expression of miR-4465 was higher (P=0.023) than that of normal tissue. The expression of these miRs was lower than those of benign tumors (P<0.01, P<0.001, P<0.0001, and P<0.01, respectively). We observed a positive correlation between miR-4465 expression levels and tumor stage (P=0.042) and a negative correlation with grade and Ki-67 score (P<0.05). The AUCs for miR-1297, miR-3191-5p, miR-4435, and miR-4465 in malignant tumors versus normal tissues were 0.784, 0.700, 0.976, and 0.865 and versus benign tumors they were 0.938, 0.857, 0.981, and 0.785, respectively. The optimal logit(P) value of 0.262 distinguished malignant from normal subjects with a sensitivity of 0.91, specificity of 0.85, and an overall accuracy of 0.89. CONCLUSION The panel of these miRs are suggested as possible onco-miRs(miR-4465) or tumor suppressor-miRs (miR-3191-5P, miR-1297, miR-4435). Overall, our results indicated that these miRs could be introduced as diagnostic biomarkers in breast cancer patients.
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Affiliation(s)
- Abbas Mosapour
- Cancer Research Lab, Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Soghra Karami Tehrani
- Cancer Research Lab, Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Morteza Atri
- Department of Surgery, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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14
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He L, Liao L, Du L. miR‑144‑3p inhibits tumor cell growth and invasion in oral squamous cell carcinoma through the downregulation of the oncogenic gene, EZH2. Int J Mol Med 2020; 46:828-838. [PMID: 32626925 PMCID: PMC7307824 DOI: 10.3892/ijmm.2020.4638] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 05/20/2020] [Indexed: 12/11/2022] Open
Abstract
Accumulating evidence demonstrates that microRNAs (miRNAs or miRs) play important roles in the development and progression of human malignancies, including oral squamous cell carcinoma (OSCC); however, the unique roles of miRNAs are not yet fully understood in OSCC. The present study aimed to identify novel miRNAs associated with OSCC and to elucidate their functions. Based on a micro-array analysis, miR-144-3p was found to be one of the most significantly downregulated miRNAs in OSCC tissues. Its low expression was closely associated with tumor size, differentiation and lymph node metastasis. Functionally, miR-144-3p overexpression suppressed proliferation, promoted apoptosis, and suppressed the invasion and migration of OSCC cells. In addition, enhancer of zeste homolog 2 (EZH2), a well-known oncogene, was proven to be a direct target of miR-144-3p, and its protein expression was negatively regulated by miR-144-3p. Moreover, EZH2 expression was increased, and inversely correlated with the miR-144-3p level in OSCC tissues. Notably, EZH2 knockdown inhibited cell proliferation, promoted cell apoptosis, and suppressed the invasion and migration of OSCC cells, whereas EZH2 overexpression partially reversed the anticancer effects mediated by miR-144-3p overexpression. On the whole, the findings of the present study suggest that miR-144-3p functions as a tumor suppressor by targeting the EZH2 oncogene, and may thus be considered as a potential diagnostic and therapeutic target for OSCC.
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Affiliation(s)
- Longlong He
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Lifan Liao
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Liangzhi Du
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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15
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HDAC7 promotes the oncogenicity of nasopharyngeal carcinoma cells by miR-4465-EphA2 signaling axis. Cell Death Dis 2020; 11:322. [PMID: 32376822 PMCID: PMC7203158 DOI: 10.1038/s41419-020-2521-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 12/29/2022]
Abstract
HDAC7 plays a crucial role in cancers, and is the main drug target of several HDAC inhibitors. However, the role and mechanism of HDAC7 in nasopharyngeal carcinoma (NPC) are still unclear. In this study, we observed that HDAC7 was significantly upregulated in the NPC tissues relative to normal nasopharyngeal mucosa (NNM) tissues, HDAC7 expression levels were positively correlated with NPC progression and negatively correlated with patient prognosis, and HDAC7 knockdown dramatically inhibited the in vitro proliferation, migration, and invasion of NPC cells, and the growth of NPC xenografts in mice, indicating the HDAC7 promotes the oncogenicity of NPC. Mechanistically, HDAC7 promoted the in vitro proliferation, migration, and invasion of NPC cells by upregulating EphA2, in which miR-4465 mediated HDAC7-regulating EphA2, a direct target gene of miR-4465. We further showed that miR-4465 was significantly downregulated in the NPC tissues relative to NNM tissues, and inhibited the in vitro proliferation, migration, and invasion of NPC cells by targeting EphA2 expression. Moreover, we observed that the expressions of HDAC7, miR-4465, and EphA2 in NPC tissues were correlated. The results suggest that HDAC7 promotes the oncogenicity of NPC by downregulating miR-4465 and subsequently upregulating EphA2, highlighting HDAC7 as a potential therapeutic target for NPC.
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16
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Lindholm EM, Ragle Aure M, Haugen MH, Kleivi Sahlberg K, Kristensen VN, Nebdal D, Børresen‐Dale A, Lingjærde OC, Engebraaten O. miRNA expression changes during the course of neoadjuvant bevacizumab and chemotherapy treatment in breast cancer. Mol Oncol 2019; 13:2278-2296. [PMID: 31402562 PMCID: PMC6763780 DOI: 10.1002/1878-0261.12561] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/26/2019] [Accepted: 08/09/2019] [Indexed: 12/24/2022] Open
Abstract
One of the hallmarks of cancer is sustained angiogenesis. Favorable results have been reported in some breast cancer (BC) patients receiving antiangiogenic therapy with bevacizumab (Bev) in combination with chemotherapy, and further knowledge on how Bev can be optimally combined with conventional treatment to increase efficacy is strongly needed. In this randomized, neoadjuvant phase II clinical trial, 132 patients with HER2-negative, nonmetastatic BC were treated with Bev in combination with sequential chemotherapy. Biopsies were sampled before treatment, after 12 weeks with anthracycline and after taxane therapy at week 25. MicroRNA (miRNA) expression profiling was performed on biopsies from each time point. Altogether, 241 biopsies were analyzed with the aim of identifying miRNA-based biomarkers of response to therapy. Results from the miRNA analyses were reported for the ER-positive cohort, which were previously demonstrated to benefit from antiangiogenic therapy in this study. For both treatment arms of this cohort, significantly different expression was observed for 217 miRNAs between objective responding and nonresponding patients before treatment initiation. These miRNAs have been linked to regulation of epithelial-mesenchymal transition, metastasis, and tumor growth, among other processes. Bev in combination with chemotherapy resulted in similar miRNA changes to chemotherapy alone. However, the deregulation of miRNA expression occurred earlier in the Bev arm. In both arms, tumor suppressor miRNAs were found upregulated after treatment, while oncogenic miRNAs were downregulated in the Bev arm. Patients responding to Bev showed a strong correlation between deregulated miRNAs and decreased proliferation score during the course of treatment, with downregulation of miR-4465 as the strongest indicator of reduced proliferation. Integrative analyses at miRNA-, gene-, and protein expression further indicated a longitudinal decrease in proliferation. Altogether, the results indicate that proliferation might represent a predictive factor for increased Bev sensitivity, which may aid in the identification of patients who could potentially benefit from Bev.
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Affiliation(s)
- Evita Maria Lindholm
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
| | - Miriam Ragle Aure
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
| | - Mads Haugland Haugen
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Department of Tumor biology, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
| | - Kristine Kleivi Sahlberg
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Department of Research and InnovationVestre Viken Hospital TrustDrammenNorway
| | - Vessela N. Kristensen
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Department of Clinical Molecular Biology (EpiGen), Division of MedicineAkershus University HospitalLørenskogNorway
| | - Daniel Nebdal
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
| | - Anne‐Lise Børresen‐Dale
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Insitute for Clinical MedicineUniversity of OsloNorway
| | - Ole Christian Lingjærde
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Department of Computer Science, Faculty of Mathematics and Natural SciencesUniversity of OsloNorway
| | - Olav Engebraaten
- Department of Tumor biology, Institute for Cancer Research, The Norwegian Radium HospitalOslo University HospitalNorway
- Insitute for Clinical MedicineUniversity of OsloNorway
- Department of OncologyOslo University HospitalNorway
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17
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Wu Y, Deng Y, Guo Q, Zhu J, Cao L, Guo X, Xu F, Weng W, Ju X, Wu X. Long non-coding RNA SNHG6 promotes cell proliferation and migration through sponging miR-4465 in ovarian clear cell carcinoma. J Cell Mol Med 2019; 23:5025-5036. [PMID: 31119871 PMCID: PMC6653241 DOI: 10.1111/jcmm.14359] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 03/15/2019] [Accepted: 04/14/2019] [Indexed: 12/13/2022] Open
Abstract
Dysregulation of small nucleolar RNA host gene 6 (SNHG6) exerts critical oncogenic effects and facilitates tumourigenesis in human cancers. However, little information about the expression pattern of SNHG6 in ovarian clear cell carcinoma (OCCC) is available, and the contributions of this long non‐coding RNA to the tumourigenesis and progression of OCCC are unclear. In the present study, we showed via quantitative real‐time PCR that SNHG6 expression was abnormally up‐regulated in OCCC tissues relative to that in unpaired normal ovarian tissues. High SNHG6 expression was correlated with vascular invasion, distant metastasis and poor survival. Further functional experiments demonstrated that knockdown of SNHG6 in OCCC cells inhibited cell proliferation, migration and invasion in vitro as well as tumour growth in vivo. Moreover, SNHG6 functioned as a competing endogenous RNA (ceRNA), effectively acting as a sponge for miR‐4465 and thereby modulating the expression of enhancer of zeste homolog 2 (EZH2). Taken together, our data suggest that SNHG6 is a novel molecule involved in OCCC progression and that targeting the ceRNA network involving SNHG6 may be a treatment strategy in OCCC.
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Affiliation(s)
- Yong Wu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Yu Deng
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Qinhao Guo
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Jun Zhu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Lijie Cao
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Xueqi Guo
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Fei Xu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Weiwei Weng
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Xingzhu Ju
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Xiaohua Wu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China.,Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
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18
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Tao Z, Feng C, Mao C, Ren J, Tai Y, Guo H, Pu M, Zhou Y, Wang G, Wang M. MiR-4465 directly targets PTEN to inhibit AKT/mTOR pathway-mediated autophagy. Cell Stress Chaperones 2019; 24:105-113. [PMID: 30421325 PMCID: PMC6363616 DOI: 10.1007/s12192-018-0946-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 12/12/2022] Open
Abstract
Autophagy plays an important role in maintaining cell function. Abnormal autophagy leads to cell dysfunction and is associated with many diseases such as tumors, immunodeficiency diseases, lysosomal storage disorders, and neurodegenerative diseases. Autophagy is precisely regulated, and PTEN plays an important role in regulating autophagy. As noncoding small RNAs, miRNAs play an important role in the fine regulation of cellular processes. However, the mechanism of the miRNA regulation of PTEN-related autophagy has not been fully elucidated. In this study, our results showed that miR-4465 significantly inhibited the expression of PTEN, upregulated phosphorylated AKT, and thereby inhibited autophagy by activating mTOR in HEK293, HeLa, and SH-SY5Y cells. Further studies indicated that miR-4465 reduced PTEN mRNA levels through posttranscriptional regulation via directly targeting the 3'-UTR. Our novel findings provide useful hints for the comprehensive elucidation of the molecular mechanism of miRNA-regulated PTEN-related autophagy and may also provide some new insights for the exploration of miRNAs in the treatment of PTEN-related diseases.
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Affiliation(s)
- Zhouteng Tao
- Department of Pharmacy, Children's Hospital of Soochow University, No. 92, Zhongnan Street, Suzhou, China
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Chenxi Feng
- Department of Pharmacy, Children's Hospital of Soochow University, No. 92, Zhongnan Street, Suzhou, China
| | - Chenmei Mao
- Department of Pharmacy, Children's Hospital of Soochow University, No. 92, Zhongnan Street, Suzhou, China
| | - Jin Ren
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yusi Tai
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Huijie Guo
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Mei Pu
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yang Zhou
- Center for Drug Safety Evaluation and Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Guanghui Wang
- Laboratory of Molecular Neuropathology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, 215021, China
| | - Mei Wang
- Department of Pharmacy, Children's Hospital of Soochow University, No. 92, Zhongnan Street, Suzhou, China.
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19
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Epigenetic Regulation of EMT (Epithelial to Mesenchymal Transition) and Tumor Aggressiveness: A View on Paradoxical Roles of KDM6B and EZH2. EPIGENOMES 2018; 3:epigenomes3010001. [PMID: 34991274 PMCID: PMC8594212 DOI: 10.3390/epigenomes3010001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/14/2018] [Accepted: 12/17/2018] [Indexed: 01/21/2023] Open
Abstract
EMT (epithelial to mesenchymal transition) is a plastic phenomenon involved in metastasis formation. Its plasticity is conferred in a great part by its epigenetic regulation. It has been reported that the trimethylation of lysine 27 histone H3 (H3K27me3) was a master regulator of EMT through two antagonist enzymes that regulate this mark, the methyltransferase EZH2 (enhancer of zeste homolog 2) and the lysine demethylase KDM6B (lysine femethylase 6B). Here we report that EZH2 and KDM6B are overexpressed in numerous cancers and involved in the aggressive phenotype and EMT in various cell lines by regulating a specific subset of genes. The first paradoxical role of these enzymes is that they are antagonistic, but both involved in cancer aggressiveness and EMT. The second paradoxical role of EZH2 and KDM6B during EMT and cancer aggressiveness is that they are also inactivated or under-expressed in some cancer types and linked to epithelial phenotypes in other cancer cell lines. We also report that new cancer therapeutic strategies are targeting KDM6B and EZH2, but the specificity of these treatments may be increased by learning more about the mechanisms of action of these enzymes and their specific partners or target genes in different cancer types.
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20
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Zhang L, Li J, Hao C, Guo W, Wang D, Zhang J, Zhao Y, Duan S, Yao W. Up-regulation of exosomal miR-125a in pneumoconiosis inhibits lung cancer development by suppressing expressions of EZH2 and hnRNPK. RSC Adv 2018; 8:26538-26548. [PMID: 35541090 PMCID: PMC9083100 DOI: 10.1039/c8ra03081b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/10/2018] [Accepted: 07/01/2018] [Indexed: 01/01/2023] Open
Abstract
Exposure to nanoparticles may lead to pneumoconiosis and lung cancer; however, whether patients suffering from pneumoconiosis also face a high risk of lung cancer has been under debate for decades. Recently, exosomes have been found to play critical roles in many diseases via intercellular cargo transportation, which has provided a new insight into the mechanistic investigation of nanoparticle-induced respiratory disorders. Herein, we isolated exosomes from the venous blood of patients with pneumoconiosis and healthy controls and then, we profiled the expression signatures of exosomal miRNAs using high-throughput sequencing technology. A total of 14 aberrantly expressed miRNAs were identified and used to process target gene prediction and functional annotation. Specially, miR-125a along with its target genes EZH2 and hnRNPK was found to play a significant role in the development of lung cancer. We then adopted a series of cellular experiments to validate the role of miR-125a in lung cancer. From the results obtained, we found that the suppression of EZH2 and hnRNPK by high levels of miR-125a inhibited the development of nanoparticle-induced lung adenocarcinoma, which contributed to the clarification of the relation between pneumoconiosis and lung cancer.
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Affiliation(s)
- Lin Zhang
- Department of Reproductive Medical Center, Third Affiliated Hospital of Zhengzhou University 7 Kangfuqian Road Zhengzhou 450001 China
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Jiangfeng Li
- School of Basic Medicine, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China
| | - Changfu Hao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Wei Guo
- Department of Occupational Disease, Henan Provincial Institute of Occupational Health Middle Street of Kangfu Zhengzhou 450052 China
| | - Di Wang
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Jianhui Zhang
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Youliang Zhao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Shuyin Duan
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
| | - Wu Yao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University 100 Science Avenue Zhengzhou 450001 China +86-371-67781922
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Liu J, Jia Y, Jia L, Li T, Yang L, Zhang G. MicroRNA 615-3p Inhibits the Tumor Growth and Metastasis of NSCLC via Inhibiting IGF2. Oncol Res 2018; 27:269-279. [PMID: 29562959 PMCID: PMC7848428 DOI: 10.3727/096504018x15215019227688] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
MicroRNAs are essential regulators of cancer-associated genes at the posttranscriptional level, and their expression is altered in cancer tissues. Herein we sought to identify the regulation of miR-615-3p in NSCLC progression and its mechanism. miR-615-3p expression was significantly downregulated in NSCLC tissue compared to control normal tissue. Exogenous overexpression of miR-615-3p inhibited the growth and metastasis of NSCLC cells. In addition, the in vivo mouse xenograft model showed that overexpression of miR-615-3p inhibited NSCLC growth and lung metastasis, whereas decreased expression of miR-615-3p caused an opposite outcome. Furthermore, we revealed that insulin-like growth factor 2 (IGF2) expression was negatively correlated with the miR-615-3p level in NSCLC specimens, and IGF2 knockdown mimicked the effect of miR-615-3p inhibition on NSCLC cell proliferation, migration, and invasion. In addition, overexpression of IGF2 rescued the inhibition of miR-615-3p in NSCLC cells. Together, our results indicated that miR-615-3p played important roles in the regulation of NSCLC growth and metastasis by targeting IGF2.
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Affiliation(s)
- Jiangtao Liu
- Medical Oncology, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
| | - Yanli Jia
- Medical Oncology, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
| | - Lijuan Jia
- Medical Oncology, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
| | - Tingting Li
- Department of Anesthesiology, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
| | - Lei Yang
- Department of Cardiothoracic Surgery, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
| | - Gongwen Zhang
- Department of Cardiothoracic Surgery, Binzhou Central Hospital, Binzhou, Shandong, P.R. China
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