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Lv L, Wang D, Yin J, Yang T, Huang B, Cao Y, Lu J. Downregulation of miR-20b-5p Contributes to the Progression of Liver Fibrosis via the STAT3 Signaling Pathway In Vivo and In Vitro. Dig Dis Sci 2023; 68:487-496. [PMID: 35947307 DOI: 10.1007/s10620-022-07660-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/02/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND Activated hepatic stellate cells (HSCs) are primarily involved in liver fibrosis and portal hypertension (PHT). We aimed to investigate the effect of miR-20b-5p on HSCs, liver fibrosis, and PHT. METHODS MiR-20b-5p expression in HSCs and in mouse liver fibrosis was determined by qPCR. Further, the effects of miR-20b-5p mimic on HSCs migration, proliferation, and apoptosis were investigated in vitro. A dual-luciferase reporter assay was performed to confirm the direct interaction between miR-20b-5p and STAT3. In vivo, mouse liver fibrosis was established by common bile duct ligation and intervened by agomiR-20b-5p. Sirius red staining and hydroxyproline content were used to evaluate collagen deposition. The α-SMA expression in the liver was detected by IHC and Western blotting. The STAT3 signaling pathway and its downregulated cytokines as well as portal pressure and angiogenesis were explored. RESULTS MiR-20b-5p was significantly downregulated during HSCs activation and in mouse liver fibrosis. The functional analyses demonstrated that miR-20b-5p inhibited cell proliferation, activation, and promoted apoptosis in HSCs in vitro. Moreover, miR-20b-5p regulated STAT3 expression by binding to the 3'UTR of its miRNA directly. Overexpression of miR-20b-5p facilitated HSC activation and proliferation by inhibiting the STAT3 signaling pathway. MiR-20b-5p overexpression suppressed the STAT3 and its downstream cytokines and ameliorated liver fibrosis in mice. The intra- and inter-hepatic angiogenesis were also effectively inhibited. The inhibition of liver fibrosis and neoangiogenesis contributed to the decrease of portal pressure. CONCLUSIONS MiR-20b-5p plays an important role in the fibrosis and angiogenesis of liver fibrosis by targeting the STAT3 signaling pathway.
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Affiliation(s)
- Ling Lv
- Department of Disease Control and Prevention, Tangdu Hospital, Fourth Military Medical University, 569 Xin Si Road, Xi'an, 710038, China
| | - Dong Wang
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
| | - Jikai Yin
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Tao Yang
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Bo Huang
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Yanlong Cao
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianguo Lu
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
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Huang C, Wang R, Lu J, He Y, Wu Y, Ma W, Xu J, Wu Z, Feng Z, Wu M. MicroRNA
‐338‐3p as a therapeutic target in cardiac fibrosis through
FGFR2
suppression. J Clin Lab Anal 2022; 36:e24584. [PMID: 35792028 PMCID: PMC9396162 DOI: 10.1002/jcla.24584] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/07/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Background The development of cardiac fibrosis involves the activation of cardiac fibroblasts (CFs) and their differentiation into myofibroblasts, which leads to the disruption of the extracellular matrix network. In the past few years, microRNAs (miRNA) have been described as potential targets for treating cardiac diseases. Although miR‐338‐3p has been shown to participate in the development of carcinoma, whether it affects cardiac fibrosis is unclear. Methods We examined the expression profiles of microRNAs in left ventricular samples of heart failure mice established by thoracic aortic constriction (TAC). Real‐time quantitative reverse transcription polymerase chain reaction (qRT‐PCR) was used to detect the expression of miR‐338‐3p. CCK‐8 assay/Transwell migration assay was used to measure the proliferation rate/migration of CFs. Luciferase reporter gene assay was used to test the binding between miR‐338‐3p and FGFR2. Results This study demonstrated that miR‐338‐3p was significantly decreased in thoracic aortic constriction mice. Cardiac miR‐338‐3p amounts were also reduced in patients with dilated cardiomyopathy (DCM). Interestingly, miR‐338‐3p overexpression inhibited α‐SMA, COL1A1, and COL3A1 expression, as well as cell proliferation and migration in CFs. Bioinformatics analysis and dual‐luciferase reporter assays revealed FGFR2 was targeted by miR‐338‐3p, whose antifibrotic effect could be alleviated by overexpression of FGFR2. Moreover, in DCM cases, serum miR‐338‐3p levels were markedly elevated in individuals with worse outcomes. Conclusions The present study provides evidence that miR‐338‐3p suppresses cardiac fibroblast activation, proliferation, and migration by directly targeting FGFR2 in mice. Besides, serum miR‐338‐3p might constitute a potential prognostic biomarker of dilated cardiomyopathy.
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Affiliation(s)
- Cheng Huang
- Department of Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Rui Wang
- Department of Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Jianjun Lu
- Department of Medical Services The First Affiliated Hopital of Sun Yat‐sen University Guangzhou China
| | - Yongli He
- Department of Intensive Care Unit Guangdong General Hospital Zhuhai Hospital Zhuhai Golden Bay Center Hospital Zhuhai China
| | - Yueheng Wu
- Department of Cardiovascular Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Wuxia Ma
- Department of Cardiovascular Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Jindong Xu
- Department of Anesthesiology Guangdong Provincial People's Hospital Guangzhou China
| | - Zejia Wu
- Department of Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Zhe Feng
- Department of Cardiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
| | - Min Wu
- Department of Cardiovascular Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangdong Cardiovascular Institute Guangzhou China
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Rackow AR, Judge JL, Woeller CF, Sime PJ, Kottmann RM. miR-338-3p blocks TGFβ-induced myofibroblast differentiation through the induction of PTEN. Am J Physiol Lung Cell Mol Physiol 2022; 322:L385-L400. [PMID: 34986654 PMCID: PMC8884407 DOI: 10.1152/ajplung.00251.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic interstitial lung disease. The pathogenesis of IPF is not completely understood. However, numerous genes are associated with the development and progression of pulmonary fibrosis, indicating there is a significant genetic component to the pathogenesis of IPF. Epigenetic influences on the development of human disease, including pulmonary fibrosis, remain to be fully elucidated. In this paper, we identify miR-338-3p as a microRNA severely downregulated in the lungs of patients with pulmonary fibrosis and in experimental models of pulmonary fibrosis. Treatment of primary human lung fibroblasts with miR-338-3p inhibits myofibroblast differentiation and matrix protein production. Published and proposed targets of miR-338-3p such as TGFβ receptor 1, MEK/ERK 1/2, Cdk4, and Cyclin D are also not responsible for the regulation of pulmonary fibroblast behavior by miR-338-3p. miR-338-3p inhibits myofibroblast differentiation by preventing TGFβ-mediated downregulation of phosphatase and tensin homolog (PTEN), a known antifibrotic mediator.
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Affiliation(s)
- Ashley R. Rackow
- 1Lung Biology and Disease Program, University of Rochester Medical Center Rochester, Rochester, New York,2Department of Environmental Medicine, University of Rochester Medical Center Rochester, Rochester, New York
| | | | - Collynn F. Woeller
- 2Department of Environmental Medicine, University of Rochester Medical Center Rochester, Rochester, New York,4Department of Ophthalmology, University of Rochester Medical Center, Rochester, New York
| | - Patricia J. Sime
- 5Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Robert M. Kottmann
- 1Lung Biology and Disease Program, University of Rochester Medical Center Rochester, Rochester, New York,2Department of Environmental Medicine, University of Rochester Medical Center Rochester, Rochester, New York,6Division of Pulmonary Disease and Critical Care Medicine, University of Rochester Medical Center, Rochester, New York
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Abstract
Hepatic fibrosis is a reversible wound healing process following liver injury. Although this process is necessary for maintaining liver integrity, severe excessive extracellular matrix accumulation (ECM) could lead to permanent scar formation and destroy the liver structure. The activation of hepatic stellate cells (HSCs) is a key event in hepatic fibrosis. Previous studies show that most antifibrotic therapies focus on the apoptosis of HSCs and the prevention of HSC activation. Noncoding RNAs (ncRNAs) play a substantial role in HSC activation and are likely to be biomarkers or therapeutic targets for the treatment of hepatic fibrosis. This review summarizes and discusses the previously reported ncRNAs, including the microRNAs, long noncoding RNAs, and circular RNAs, highlighting their regulatory roles and interactions in the signaling pathways that regulate HSC activation in hepatic fibrosis.
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5
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The role of let-7b in the inhibition of hepatic stellate cell activation by rSjP40. PLoS Negl Trop Dis 2021; 15:e0009472. [PMID: 34161325 PMCID: PMC8221521 DOI: 10.1371/journal.pntd.0009472] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/13/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Hepatic stellate cells (HSCs) are one of the main cell types involved in liver fibrosis induced by many factors, including schistosomes. Previous studies in our lab have shown that recombinant P40 protein from Schistosoma japonicum (rSjP40) can inhibit HSC activation in vitro. Let-7b is a member of the let-7 microRNA family and plays an inhibitory role in a variety of diseases and inflammatory conditions. In this study, we investigated the role of let-7b in the inhibition of HSC activation by rSjP40. METHODS Expression of let-7b was detected by quantitative real-time PCR. A dual luciferase assay was used to confirm direct interaction between let-7b and collagen I. We also used western blot to assess protein levels of TGFβRI and collagen type I α1 (COL1A1). RESULTS We found that rSjP40 up-regulates expression of let-7b in HSCs. Let-7b inhibits collagen I expression by directly targeting the 3'UTR region of the collagen I gene. Furthermore, we discovered that let-7b inhibitor partially restores the loss of collagen I expression caused by rSjP40. CONCLUSION Our research clarifies the role of let-7b in the inhibition of HSC activation by rSjP40 and will provide new insights and ideas for the inhibition of HSC activation and treatment of liver fibrosis.
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Bulfoni M, Pravisani R, Dalla E, Cesselli D, Hidaka M, Di Loreto C, Eguchi S, Baccarani U. miRNA expression profiles in liver grafts of HCV and HIV/HCV-infected recipients, 6 months after liver transplantation. J Med Virol 2021; 93:4992-5000. [PMID: 33818800 PMCID: PMC8360178 DOI: 10.1002/jmv.26999] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 03/03/2021] [Accepted: 03/23/2021] [Indexed: 12/14/2022]
Abstract
In hepatitis C virus (HCV)/human immunodeficiency virus (HIV) co‐infected patients, HIV enhances HCV replication and liver damage. Several microRNAs (miRNAs), active in pro‐fibrotic and inflammatory pathways, have been implicated in the pathogenesis of this phenomenon. However, these miRNAs have been tested only in explanted cirrhotic livers, when the liver damage has become chronic and irreversible. No data are available on the early phase of viral infection, such as early after liver transplantation (LT). In the present study, the expression of miR‐101, miR‐122, miR‐155, miR‐192, miR‐200c, miR‐338, and miR‐532 was determined by quantitative real‐time polymerase chain reaction in liver biopsies of HCV (n = 19) and HCV/HIV‐infected (n = 20) LT recipients, as well as in a control group (n = 18) of noninfected patients, transplanted for alcoholic cirrhosis. The timing of liver biopsy was 6 months post‐LT. None of the patients was treated with direct‐acting anti‐HCV drugs. All co‐infected recipients had suppressed HIV viral load. Grading and staging were assessed according to the Ishak Classification. HCV and HIV viral load were measured in the sera. miR‐101 (p = .03), miR‐122 (p = .012), and miR‐192 (p = .038) were significantly downregulated in HCV/HIV co‐infected and HCV mono‐infected recipients when compared with noninfected recipients, and such downregulation was more pronounced in co‐infected ones. Moreover, in co‐infected recipients but not in mono‐infected ones, miR‐101 inversely correlated with the peripheral HCV‐RNA levels (r = .41, p = .04) and miR‐122 inversely correlated with peripheral HCV‐RNA levels (r = .49, p = .03) and with the histological grading (r = .51, p = .02). In conclusion, as early as 6 months after LT, the presence of HIV‐HCV co‐infection enhanced a significant downregulation of certain miRNAs that showed a direct correlation with HCV viral load and liver inflammation.
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Affiliation(s)
| | - Riccardo Pravisani
- Department of Medicine, Liver-Kidney Transplant Unit, University of Udine, Udine, Italy
| | - Emiliano Dalla
- Department of Medicine, University of Udine, Udine, Italy
| | - Daniela Cesselli
- Department of Medicine, University of Udine, Udine, Italy.,Institute of Pathology, ASU FC, Udine, Italy
| | - Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Carla Di Loreto
- Department of Medicine, University of Udine, Udine, Italy.,Institute of Pathology, ASU FC, Udine, Italy
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Umberto Baccarani
- Department of Medicine, Liver-Kidney Transplant Unit, University of Udine, Udine, Italy
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Wang F, Malnassy G, Qiu W. The Epigenetic Regulation of Microenvironment in Hepatocellular Carcinoma. Front Oncol 2021; 11:653037. [PMID: 33791228 PMCID: PMC8005717 DOI: 10.3389/fonc.2021.653037] [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: 01/13/2021] [Accepted: 02/22/2021] [Indexed: 12/11/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly lethal and complex malignancy strongly influenced by the surrounding tumor microenvironment. The HCC microenvironment comprises hepatic stellate cells (HSCs), tumor-associated macrophages (TAMs), stromal and endothelial cells, and the underlying extracellular matrix (ECM). Emerging evidence demonstrates that epigenetic regulation plays a crucial role in altering numerous components of the HCC tumor microenvironment. In this review, we summarize the current understanding of the mechanisms of epigenetic regulation of the microenvironment in HCC. We review recent studies demonstrating how specific epigenetic mechanisms (DNA methylation, histone regulation, and non-coding RNAs mediated regulation) in HSCs, TAMs, and ECM, and how they contribute to HCC development, so as to gain new insights into the treatment of HCC via regulating epigenetic regulation in the tumor microenvironment.
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Affiliation(s)
- Fang Wang
- Department of Surgery, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States.,Department of Cancer Biology, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States
| | - Greg Malnassy
- Department of Surgery, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States.,Department of Cancer Biology, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States
| | - Wei Qiu
- Department of Surgery, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States.,Department of Cancer Biology, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States
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8
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Validation and functional analysis of the critical proteins in combination with taurine, epigallocatechin gallate and genistein against liver fibrosis in rats. Biomed Pharmacother 2019; 115:108975. [DOI: 10.1016/j.biopha.2019.108975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/07/2019] [Accepted: 05/08/2019] [Indexed: 12/22/2022] Open
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9
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Hu J, Duan B, Jiang W, Fu S, Gao H, Lu L. Epidermal growth factor-containing fibulin-like extracellular matrix protein 1 (EFEMP1) suppressed the growth of hepatocellular carcinoma cells by promoting Semaphorin 3B(SEMA3B). Cancer Med 2019; 8:3152-3166. [PMID: 30972979 PMCID: PMC6558597 DOI: 10.1002/cam4.2144] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 03/10/2019] [Indexed: 01/04/2023] Open
Abstract
AIM Epidermal growth factor-containing fibulin-like extracellular matrix protein 1(EFEMP1) has been found to be involved in the occurrence and development of many cancers. The relationship between EFEMP1 and the development of hepatocellular carcinoma (HCC) and the molecular mechanism are not fully understood. METHODS Real-time polymerase chain reaction (PCR) and tissue microarray were used to detect the expression of EFEMP1 in HCC cell lines and tissue. Methylation-specific PCR assay was used to measure the methylation level of EFEMP1 in HCC cell lines and tissue. To study the function of EFEMP1 on cell function, Huh7 and HepG2 were infected with lentiviral particles expressing EFEMP1. MTT assay and colony formation assay were used to examine the effect of EFEMP1 on cell proliferation. Annexin-VAPC/7-AAD double were used to detect the effect of EFEMP1 on cell apoptosis. To further detect the effect of EFEMP1 on the development of HCC in vivo, we performed the tumor formation experiment in nude mice. Gene chip was used to detect the expression profile of Huh7 and HepG2 overexpressing EFEMP1. To further screen out the differences, GO analysis and pathway analysis were performed. To study the effects of SEMA3B, specific siRNA was used to inhibit the expression of SEMA3B. Chi-squared test and rank sum test were used to analyze the relationship between EFEMP1 expression and HCC clinical characteristic. RESULTS The study found that the expression of EFEMP1 was significantly decreased in HCC cell lines and HCC tissues. The expression level of EFEMP1 was related to the TNM (the extent of the tumor, the extent of spread to the lymph nodes, the presence of metastasis) stage and the prognosis of patients with HCC. The decrease of protein expression suggested that the patient prognosis was worse, and the protein level of EFEMP1 may be an independent factor in the prognosis of HCC patients. Promoter methylation may be one of the reasons for EFEMP1 inhibition. EFEMP1 could inhibit the proliferation of HCC cells and promoted the apoptosis of HCC cells to regulate the development of HCC. And EFEMP1 promoted the apoptosis of HCC cells mainly through the mitochondrial apoptosis pathway. EFEMP1 may inhibit the proliferation of HCC cells through the SEMA3B gene in the Axon guidance pathway. CONCLUSION In summary, our research revealed the regulation of EFEMP1 on cell proliferation and apoptosis in HCC. EFEMP1 may suppress the growth of HCC cells by promoting SEMA3B.
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Affiliation(s)
- Jiangfeng Hu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Bensong Duan
- Endoscopy Center, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Weiliang Jiang
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Sengwang Fu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hengjun Gao
- Department of Gastroenterology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lungen Lu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Zhang X, Pan Y, Fu H, Zhang J. microRNA-205 and microRNA-338-3p Reduces Cell Apoptosis in Prostate Carcinoma Tissue and LNCaP Prostate Carcinoma Cells by Directly Targeting the B-Cell Lymphoma 2 (Bcl-2) Gene. Med Sci Monit 2019; 25:1122-1132. [PMID: 30741252 PMCID: PMC6380162 DOI: 10.12659/msm.912148] [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] [Indexed: 12/17/2022] Open
Abstract
Background The inhibitor of apoptosis, B-cell lymphoma 2 (Bcl-2), is encoded by the BCL2 gene. Previous studies have shown that microRNAs are downregulated in prostate cancer. This study aimed to investigate the role of microRNA-205 and microRNA-338-3p and cell apoptosis in prostate carcinoma tissue and the LNCaP human prostate adenocarcinoma cell line by directly targeting the BCL2 gene and Bcl-2 protein expression. Material/Methods Bioinformatics methods predicted the target genes of miR-205 and miR-338-3p, which were validated by a luciferase assay. Immunohistochemistry was used to detect Bcl-2 protein expression in 30 samples of prostate carcinoma tissue and 30 matched samples of normal prostate. The normal prostate epithelial cell line, RWPE-1, and LNCaP human prostate adenocarcinoma cells studied in vitro. BCL2 mRNA expression and Bcl-2 protein expression were determined by quantitative polymerase chain reaction (q-PCR) and Western blot, respectively. Cell apoptosis was measured by flow cytometry using annexin V, fluorescein isothiocyanate, and phycoerythrin (annexin V-FITC/PE). Results TargetScan Human 7.2 predicted that the structures of miR-205 and miR-338-3p had a binding site on the proto-oncogene, BCL2, which was verified by a luciferase assay. The expression of miR-205 and miR-338-3p were significantly downregulated in prostate carcinoma tissues and LNCaP cells when compared with normal controls. BCL2 expression was significantly inhibited by overexpression of miR-205 and miR-338-3p in LNCaP cells. Conclusions The results of this study showed that miR-205 and miR-338-3p downregulated the expression of the BCL2 gene and decreased apoptosis in prostate carcinoma.
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Affiliation(s)
- Xi Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China (mainland)
| | - Yuliang Pan
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China (mainland)
| | - Huiqun Fu
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China (mainland)
| | - Juan Zhang
- Department of Oncology, The Third Xiangya Hospital of Central South University, Changsha, Hunan, China (mainland)
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Mmu-miR-92a-2-5p targets TLR2 to relieve Schistosoma japonicum-induced liver fibrosis. Int Immunopharmacol 2019; 69:126-135. [PMID: 30708193 DOI: 10.1016/j.intimp.2019.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 12/29/2018] [Accepted: 01/05/2019] [Indexed: 12/11/2022]
Abstract
According to conservative estimates, >230 million people are infected with schistosomiasis,which becomes one of the most common parasitic diseases. This study focuses on investigating in vivo and in vitro effects of mmu-miR-92a-2-5p in Schistosoma japonicum-induced liver fibrosis by targeting TLR2. Through bioinformatic analysis, the overexpression of TLR2 and the down-regulation of mmu-miR-92a-2-5p were revealed in the progression of S. japonicum-induced liver fibrosis. BALB/C mice were taken advantage to construct normal control and schistosomiasis liver fibrosis (SLF) model. The mice in model groups were transfected recombinant lentivirus (Lenti-mmu-miR-92a-2-5p or Lenti-NC) to alter the expression of mmu-miR-92a-2-5p in vivo. HE and Masson staining were employed to observe the pathological changes and collagenous fibrosis. QRT-PCR showed that mmu-miR-92a-2-5p was decreased while TLR2 was elevated in the infected groups. However, lenti-mmu-miR-92a-2-5p group could inhibit liver fibrosis. Then the effect of mmu-miR-92a-2-5p on S. japonicum-induced liver fibrosis including cell apoptosis rates, proliferation and proteins related to liver fibrosis was examined in NIH-3T3 mouse embryonic fibroblasts. Moreover, the association between mmu-miR-92a-2-5p and TLR2 was detected by dual-luciferase reporter gene assay and the expression of cytokines IL-4, IFN-γ and TNF-α in SLF model was detected by ELISA. Further, the knockout of TLR2 in C57BL/6J mice was used to confirm the association between mmu-miR-92a-2-5p and TLR2. Thus, these findings demonstrated that mmu-miR-92a-2-5p inhibited S. japonicum-induced liver fibrosis by targeting TLR2 in vitro and in vivo.
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12
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Yang X, Zi XH. LncRNA SNHG1 alleviates OGD induced injury in BMEC via miR-338/HIF-1α axis. Brain Res 2018; 1714:174-181. [PMID: 30414401 DOI: 10.1016/j.brainres.2018.11.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Brain microvascular endothelial cell (BMEC) is an important therapeutic target for the inhibition of brain vascular dysfunction in ischemic stroke. Expression of long non-coding RNA SNHG1 is reportedly upregulated in BMEC after OGD. The present study aims to investigate the potential roles of SNHG1 in OGD-induced injury in BMEC. METHODS Mice primary brain microvascular endothelial cells (BMEC) were cultured under "normal" or "oxygen/glucose-deprived" (OGD) conditions. The expression of SNHG1 and miR-338 after OGD were examined by qPCR. shRNA against SNHG1 was used to knockdown SNHG1 in BMEC. MiR-338-3p mimic and inhibitor were used to change the expression of miR-338 in BMEC. The relationship between SNHG1 and miR-338, and the relationship between miR-338 and HIF-1α were clarified using RNA pull-down and luciferase reporter gene assays, respectively. RESULTS SNHG1 and miR-338 were upregulated in OGD induced BMEC. SNHG1 silence aggravated OGD-induced cell apoptosis by down-regulating Bcl-2, HIF-1α and VEGF-A, and upregulating caspase 3 activity and Bax. MiR-338 was upregulated in SNHG1-silenced BMEC. RNA pull-down assays showed that SNHG1 could be directly bound by miR-338. In addition, miR-338 overexpression reduced cell viability in OGD while miR-338 inhibition protected BMEC against OGD-induced injury. Furthermore, luciferase reporter assay showed that HIF-1α was a direct target of miR-338. CONCLUSIONS SNHG1 exerted protective effects against OGD induced injury via sponging miR-338, thus upregulating HIF-1α/VEGF-A in BMEC.
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Affiliation(s)
- Xia Yang
- Department of Neurology, The Third Xiangya Hospital of Central South University, Changsha 410013, PR China
| | - Xiao-Hong Zi
- Department of Neurology, The Third Xiangya Hospital of Central South University, Changsha 410013, PR China.
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13
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Cao Y, Shi X, Liu Y, Xu R, Ai Q. MicroRNA-338-3p Inhibits Proliferation and Promotes Apoptosis of Multiple Myeloma Cells Through Targeting Cyclin-Dependent Kinase 4. Oncol Res 2018; 27:117-124. [PMID: 29562955 PMCID: PMC7848273 DOI: 10.3727/096504018x15213031799835] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
MicroRNA-338-3p (miR-338-3p) has been reported to be a tumor suppressor in multiple cancer types. However, the biological role of miR-338-3p and its underlying mechanism in multiple myeloma (MM) remain unclear. In the present study, we investigated the biological role and potential of miR-338-3p in MM. We found that miR-338-3p was significantly decreased in newly diagnosed and relapsed MM tissues and cell lines. Overexpression of miR-338-3p in MM cells significantly inhibited proliferation and promoted apoptosis, caspase 3, and caspase 8 activity. Bioinformatics algorithm analysis predicted that cyclin-dependent kinase 4 (CDK4) was a direct target of miR-338-3p, and this was experimentally verified by a dual-luciferase reporter assay. Furthermore, overexpression of miR-338-3p inhibited CDK4 expression on mRNA and protein levels. Of note, the restoration of CDK4 expression markedly abolished the effect of miR-338-3p overexpression on cell proliferation, apoptosis, caspase 3, and caspase 8 activities in MM cells. Taken together, the present study is the first to demonstrate that miR-338-3p functions as a tumor suppressor in MM through inhibiting CDK4. This finding implies that miR-338-3p is a potential therapeutic target for the treatment of MM.
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Affiliation(s)
- Yang Cao
- Clinical Laboratory, the First Affiliated Hospital, Jilin University, Chaoyang District, Changchun, P.R. China
| | - Xu Shi
- Central Laboratory, the First Affiliated Hospital, Jilin University, Chaoyang District, Changchun, P.R. China
| | - Yingmin Liu
- Department of Hematology Cancer Center, the First Affiliated Hospital, Jilin University, Chaoyang District, Changchun, P.R. China
| | - Ren Xu
- Department of Respiratory, the First Affiliated Hospital, Jilin University, Chaoyang District, Changchun, P.R. China
| | - Qing Ai
- Clinical Laboratory, the First Affiliated Hospital, Jilin University, Chaoyang District, Changchun, P.R. China
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14
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Epigenetic reprogramming in liver fibrosis and cancer. Adv Drug Deliv Rev 2017; 121:124-132. [PMID: 29079534 PMCID: PMC5716427 DOI: 10.1016/j.addr.2017.10.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 10/10/2017] [Accepted: 10/17/2017] [Indexed: 12/18/2022]
Abstract
Novel insights into the epigenetic control of chronic liver diseases are now emerging. Recent advances in our understanding of the critical roles of DNA methylation, histone modifications and ncRNA may now be exploited to improve management of fibrosis/cirrhosis and cancer. Furthermore, improved technologies for the detection of epigenetic markers from patients' blood and tissues will vastly improve diagnosis, treatment options and prognostic tracking. The aim of this review is to present recent findings from the field of liver epigenetics and to explore their potential for translation into therapeutics to prevent disease promoting epigenome reprogramming and reverse epigenetic changes.
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15
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de Oliveira da Silva B, Ramos LF, Moraes KCM. Molecular interplays in hepatic stellate cells: apoptosis, senescence, and phenotype reversion as cellular connections that modulate liver fibrosis. Cell Biol Int 2017; 41:946-959. [PMID: 28498509 DOI: 10.1002/cbin.10790] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 05/08/2017] [Indexed: 12/18/2022]
Abstract
Liver fibrosis is a pathophysiological process correlated with intense repair and cicatrization mechanisms in injured liver, and over the past few years, the characterization of the fine-tuning of molecular interconnections that support the development of liver fibrosis has been investigated. In this cellular process, the hepatic stellate cells (HSCs) support the organ fibrogenesis. The HSCs are found in two distinct morpho-physiological states: quiescent and activated. In normal liver, most HSCs are found in quiescent state, presenting a considerable amount of lipid droplets in the cytoplasm, while in injured liver, the activated phenotype of HSCs is a myofibroblast, that secrete extracellular matrix elements and contribute to the establishment of the fibrotic process. Studies on the molecular mechanisms by which HSCs try to restore their quiescent state have been performed; however, no effective treatment to reverse fibrosis has been so far prescribed. Therefore, the elucidation of the cellular and molecular mechanisms of apoptosis, senescence, and the cell reversion phenotype process from activate to quiescent state will certainly contribute to the development of effective therapies to treat hepatic fibrosis. In this context, this review aimed to address central elements of apoptosis, senescence, and reversal of HSC phenotype in the control of hepatic fibrogenesis, as a guide to future development of therapeutic strategies.
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Affiliation(s)
- Brenda de Oliveira da Silva
- Universidade Federal de Ouro Preto, Núcleo de Pesquisa em Ciências Biológicas, Programa de Pós-Graduação em Biotecnologia, Ouro Preto, Minas Gerais, Brazil.,Molecular Biology Laboratory, Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho"-Campus Rio Claro, Rio Claro, São Paulo, Brazil
| | - Letícia Ferrreira Ramos
- Molecular Biology Laboratory, Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho"-Campus Rio Claro, Rio Claro, São Paulo, Brazil
| | - Karen C M Moraes
- Molecular Biology Laboratory, Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho"-Campus Rio Claro, Rio Claro, São Paulo, Brazil
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16
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Hu J, Song C, Duan B, Zhang X, Li D, Zhu L, Gao H. LncRNA-SVUGP2 suppresses progression of hepatocellular carcinoma. Oncotarget 2017; 8:97835-97850. [PMID: 29228655 PMCID: PMC5716695 DOI: 10.18632/oncotarget.18279] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 04/25/2017] [Indexed: 01/21/2023] Open
Abstract
Numerous studies indicate that long noncoding RNAs (lncRNAs) are dysregulated in hepatocellular carcinoma (HCC) and might serve as potential diagnostic biomarkers and therapeutic targets of HCC. Therefore, it is interesting to globally identify the lncRNAs altered in HCC. In our study, we used microarray to profile the levels of lncRNAs and mRNAs in three pairs of HCC and their adjacent noncancerous samples. We found lncRNA-SVUGP2, which is a splice variant of the UGP2 gene, was down-regulated in HCC samples and correlates with a better prognosis in patients with HCC. Overexpression of lncRNA-SVUGP2 in HepG2 and Hep3B liver cancer cells suppresses cell proliferation in vitro and tumor growth in vivo. Moreover, lncRNA-SVUGP2 suppresses the invasion ability of liver cancer cell lines and downregulates the mRNA and protein levels of MMP2 and 9. Additionally, lncRNA-SVUGP2 positively or negatively correlates with many mRNAs in liver cancer tissues, indicating it is multifunctional in regulating carcinogenesis.
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Affiliation(s)
- Jiangfeng Hu
- Department of Gastroenterology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chenlin Song
- Division of Molecular Biology of the Cell II, German Cancer Research Center, DKFZ-ZMBH Alliance, Heidelberg, Germany
| | - Bensong Duan
- Department of Gastroenterology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoyan Zhang
- Shanghai Engineering Center for Molecular Medicine, National Engineering Center for Biochip at Shanghai, Shanghai, China
| | - Dongliang Li
- Department of Hepatobiliary Medicine, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou, China
| | - Liang Zhu
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Hengjun Gao
- National Engineering Center for Biochip at Shanghai, Shanghai, China.,Department of Gastroenterology, Institute of Digestive Diseases, Tongji University School of Medicine, Wuhan, China
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