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Wang WK, Wang B, Cao XH, Liu YS. Spironolactone alleviates myocardial fibrosis via inhibition of Ets‑1 in mice with experimental autoimmune myocarditis. Exp Ther Med 2022; 23:369. [PMID: 35495592 PMCID: PMC9019666 DOI: 10.3892/etm.2022.11296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/16/2022] [Indexed: 11/13/2022] Open
Abstract
Spironolactone improves cardiac structure, function and prognosis in patients with heart failure and delays the progression of cardiac fibrosis. However, the exact underlying mechanism of this process remains to be elucidated. The present study therefore aimed to explore the protective effect and underlying mechanism of the aldosterone receptor antagonist, spironolactone, on myocardial fibrosis in mice with experimental autoimmune myocarditis (EAM). The EAM model was induced in BALB/c mice via immunization with murine cardiac α-myosin heavy chain sequence polypeptides. The cardiac function of the mice was assessed using echocardiography and the levels of inflammatory cytokines were quantified using ELISA. E26 transformation-specific sequence-1 (Ets-1) expression was knocked down using lentivirus-mediated small interference RNA. Total collagen deposition was assessed using Masson's trichrome and Ets-1, TGF-β1, Smad2/3, collagen I and III protein expression levels were detected using immunohistochemistry and western blotting. MMP-2 and MMP-9 mRNA expression levels and activity was determined using reverse transcription-quantitative PCR and gelatin zymography, respectively. The results of the present study demonstrated that spironolactone significantly improved myocardium hypertrophy, diastolic cardiac function and decreased myocardial inflammation and collagen deposition induced by EAM. Spironolactone treatment significantly inhibited Ets-1 and smad2/3 phosphorylation. In addition, inhibition of Ets-1 reduced the expression and activity of MMP-2 and MMP-9 and decreased cardiac fibrosis in EAM mice. The results indicated that the improvement of myocardial fibrosis by spironolactone may be associated with the TGF-β1/Smad-2/3/Ets-1 signaling pathway in EAM mice.
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Affiliation(s)
- Wen-Ke Wang
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, P.R. China
| | - Ben Wang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xue-Hu Cao
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yu-Sheng Liu
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, P.R. China
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2
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Tang J, Li Y, Liu B, Liang W, Hu S, Shi M, Zeng J, Li M, Huang M. Uncovering a Key Role of ETS1 on Vascular Abnormality in Glioblastoma. Pathol Oncol Res 2021; 27:1609997. [PMID: 34867089 PMCID: PMC8641556 DOI: 10.3389/pore.2021.1609997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/28/2021] [Indexed: 12/02/2022]
Abstract
Glioblastoma (GBM) is the most aggressive type of brain tumor. Microvascular proliferation and abnormal vasculature are the hallmarks of the GBM, aggravating disease progression and increasing patient morbidity. Here, we uncovered a key role of ETS1 on vascular abnormality in glioblastoma. ETS1 was upregulated in endothelial cells from human tumors compared to endothelial cells from paired control brain tissue. Knockdown of Ets1 in mouse brain endothelial cells inhibited cell migration and proliferation, and suppressed expression of genes associated with vascular abnormality in GBM. ETS1 upregulation in tumor ECs was dependent on TGFβ signaling, and targeting TGFβ signaling by inhibitor decreased tumor angiogenesis and vascular abnormality in CT-2A glioma model. Our results identified ETS1 as a key factor regulating tumor angiogenesis, and suggested that TGFβ inhibition may suppress the vascular abnormality driven by ETS1.
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Affiliation(s)
- Jiefu Tang
- Trauma Center, The First Affiliated Hospital of Hunan University of Medicine, Huaihua, China
| | - Yaling Li
- Department of Obstetrics and Gynaecology, Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China
| | - Boxuan Liu
- Precision Medicine Center, The Second People's Hospital of Huaihua, Huaihua, China
| | - Wei Liang
- Department of Orthopaedics, The Second People's Hospital of Huaihua, Huaihua, China
| | - Sanbao Hu
- Department of Orthopaedics, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Meilian Shi
- Department of Infectious Diseases, The Second People's Hospital of Huaihua, Huaihua, China
| | - Jie Zeng
- Department of Orthopaedics, The Second People's Hospital of Huaihua, Huaihua, China
| | - Mingzhen Li
- Precision Medicine Center, The Second People's Hospital of Huaihua, Huaihua, China
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3
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Li Q, Ming Y, Jia H, Wang G. Poricoic acid A suppresses TGF-β1-induced renal fibrosis and proliferation via the PDGF-C, Smad3 and MAPK pathways. Exp Ther Med 2021; 21:289. [PMID: 33717232 PMCID: PMC7885072 DOI: 10.3892/etm.2021.9720] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 03/17/2020] [Indexed: 02/07/2023] Open
Abstract
Renal interstitial fibrosis is the most important pathological process in chronic renal failure. Previous studies have shown that poricoic acid A (PAA), the main chemical constituent on the surface layer of the mushroom Poria cocos, has protective effects against oxidative stress and acute kidney injury. The present study aimed to investigate the potential roles of PAA on the pathological process of renal fibrosis and the associated molecular mechanism. The NRK-49F cell line was treated with transforming growth factor-β1 (TGF-β1) with or without PAA or platelet-derived growth factor C (PDGF-C). Cell Counting Kit-8 assay, western blotting and 5-ethynyl-2'-deoxyuridine immunofluorescence staining were performed to examine cell growth, protein expression and cell proliferation, respectively. Data from the present study showed that 10 µM PAA attenuated TGF-β1-induced NRK-49F cell extracellular matrix (ECM) accumulation, fibrosis formation and proliferation. Renal fibrosis with the activation of Smad3 and mitogen-activated protein kinase (MAPK) pathways were also inhibited by PAA treatment. PDGF-C reversed the inhibitory effects of PAA on TGF-β1-induced renal fibroblast proliferation and activation of the Smad3/MAPK pathway. The present study suggested that suppression of TGF-β1-induced renal fibroblast ECM accumulation, fibrosis formation and proliferation by PAA is mediated via the inhibition of the PDGF-C, Smad3 and MAPK pathways. The present findings not only revealed the potential anti-fibrotic effects of PAA on renal fibroblasts, but also provided a new insight into the prevention of fibrosis formation via regulation of the PDGF-C, Smad3 and MAPK signaling pathways.
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Affiliation(s)
- Qiang Li
- Department of Nephrology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China
| | - Yao Ming
- Department of Nephrology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China
| | - Hu Jia
- Department of Nephrology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China
| | - Gang Wang
- Department of Nephrology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China
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Lee TL, Lai TC, Lin SR, Lin SW, Chen YC, Pu CM, Lee IT, Tsai JS, Lee CW, Chen YL. Conditioned medium from adipose-derived stem cells attenuates ischemia/reperfusion-induced cardiac injury through the microRNA-221/222/PUMA/ETS-1 pathway. Theranostics 2021; 11:3131-3149. [PMID: 33537078 PMCID: PMC7847683 DOI: 10.7150/thno.52677] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/17/2020] [Indexed: 01/08/2023] Open
Abstract
Rationale: Cardiovascular diseases, such as myocardial infarction (MI), are the leading causes of death worldwide. Reperfusion therapy is the common standard treatment for MI. However, myocardial ischemia/reperfusion (I/R) causes cardiomyocyte injury, including apoptosis and fibrosis. We aimed to investigate the effects of conditioned medium from adipose-derived stem cells (ADSC-CM) on apoptosis and fibrosis in I/R-treated hearts and hypoxia/reoxygenation (H/R)-treated cardiomyocytes and the underlying mechanisms. Methods: ADSC-CM was collected from ADSCs. The effects of intramuscular injection of ADSC-CM on cardiac function, cardiac apoptosis, and fibrosis examined by echocardiography, Evans blue/TTC staining, TUNEL assay, and Masson's trichrome staining in I/R-treated mice. We also examined the effects of ADSC-CM on apoptosis and fibrosis in H/R-treated H9c2 cells by annexin V/PI flow cytometry, TUNEL assay, and immunocytochemistry. Results: ADSC-CM treatment significantly reduced heart damage and fibrosis of I/R-treated mice and H/R-treated cardiomyocytes. In addition, the expression of apoptosis-related proteins, such as p53 upregulated modulator of apoptosis (PUMA), p-p53 and B-cell lymphoma 2 (BCL2), as well as the fibrosis-related proteins ETS-1, fibronectin and collagen 3, were significantly reduced by ADSC-CM treatment. Moreover, we demonstrated that ADSC-CM contains a large amount of miR-221/222, which can target and regulate PUMA or ETS-1 protein levels. Furthermore, the knockdown of PUMA and ETS-1 decreased the induction of apoptosis and fibrosis, respectively. MiR-221/222 overexpression achieved similar results. We also observed that cardiac I/R markedly increased apoptosis and fibrosis in miR-221/222 knockout (KO) mice, while ADSC-CM decreased these effects. The increased phosphorylation of p38 and NF‐κB not only mediated myocardial apoptosis through the PUMA/p53/BCL2 pathway but also regulated fibrosis through the ETS-1/fibronectin/collagen 3 pathway. Conclusions: Overall, our results show that ADSC-CM attenuates cardiac apoptosis and fibrosis by reducing PUMA and ETS-1 expression, respectively. The protective effect is mediated via the miR-221/222/p38/NF-κB pathway.
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Chen YC, Chuang TY, Liu CW, Liu CW, Lee TL, Lai TC, Chen YL. Particulate matters increase epithelial-mesenchymal transition and lung fibrosis through the ETS-1/NF-κB-dependent pathway in lung epithelial cells. Part Fibre Toxicol 2020; 17:41. [PMID: 32799885 PMCID: PMC7429884 DOI: 10.1186/s12989-020-00373-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/07/2020] [Indexed: 02/07/2023] Open
Abstract
Background Particulate matters (PMs) in ambient air pollution are closely related to the incidence of respiratory diseases and decreased lung function. Our previous report demonstrated that PMs-induced oxidative stress increased the expression of proinflammatory intracellular adhesion molecule-1 (ICAM-1) through the IL-6/AKT/STAT3/NF-κB pathway in A549 cells. However, the role of O-PMs in epithelial-mesenchymal transition (EMT) development and pulmonary fibrosis and the related mechanisms have not been determined. The aim of this study was to investigate the effects of O-PMs on the pathogenesis of EMT and pulmonary fibrosis as well as the expression of ETS-1 and NF-κB p65, in vitro and in vivo. Results O-PMs treatment induced EMT development, fibronectin expression, and cell migration. O-PMs affected the expression of the EMT-related transcription factors NF-κB p65 and ETS-1. Interference with NF-κB p65 significantly decreased O-PMs-induced fibronectin expression. In addition, O-PMs affected the expression of fibronectin, E-cadherin, and vimentin through modulating ETS-1 expression. ATN-161, an antagonist of integrin α5β1, decreased the expression of fibronectin and ETS-1 and EMT development. EMT development and the expression of fibronectin and ETS-1 were increased in the lung tissue of mice after exposure to PMs for 7 and 14 days. There was a significant correlation between fibronectin and ETS-1 expression in human pulmonary fibrosis tissue. Conclusion O-PMs can induce EMT and fibronectin expression through the activation of transcription factors ETS-1 and NF-κB in A549 cells. PMs can induce EMT development and the expression of fibronectin and ETS-1 in mouse lung tissues. These findings suggest that the ETS-1 pathway could be a novel and alternative mechanism for EMT development and pulmonary fibrosis.
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Affiliation(s)
- Yu-Chen Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Jen-Ai Road, Taipei, Taiwan, Republic of China
| | - Tzu-Yi Chuang
- Division of Pulmonary Medicine, Department of Internal Medicine, Min-Sheng General Hospital, No. 168 Ching-Kuo Road, Taoyuan, Taiwan, Republic of China. .,Department of Internal Medicine, College of Medicine and National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, Taiwan, Republic of China.
| | - Chen-Wei Liu
- Department of Basic Medical Science, University of Arizona College of Medicine, Phoenix, AZ, USA
| | - Chi-Wei Liu
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan, Republic of China
| | - Tzu-Lin Lee
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Jen-Ai Road, Taipei, Taiwan, Republic of China
| | - Tsai-Chun Lai
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Jen-Ai Road, Taipei, Taiwan, Republic of China
| | - Yuh-Lien Chen
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, No. 1, Sec 1, Jen-Ai Road, Taipei, Taiwan, Republic of China.
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6
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Xu L, Fu M, Chen D, Han W, Ostrowski MC, Grossfeld P, Gao P, Ye M. Endothelial-specific deletion of Ets-1 attenuates Angiotensin II-induced cardiac fibrosis via suppression of endothelial-to-mesenchymal transition. BMB Rep 2019. [PMID: 30670148 PMCID: PMC6827575 DOI: 10.5483/bmbrep.2019.52.10.206] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Lian Xu
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Mengxia Fu
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Dongrui Chen
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Weiqing Han
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Michael C. Ostrowski
- Department of Cancer Biology and Genetics, The Comprehensive Cancer Center, Ohio State University, Columbus, OH 43210, USA
| | - Paul Grossfeld
- Division of Pediatric Cardiology, University of California San Diego School of Medicine, La Jolla, CA 92093, USA
| | - Pingjin Gao
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
| | - Maoqing Ye
- State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, China
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7
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Rodgers JJ, McClure R, Epis MR, Cohen RJ, Leedman PJ, Harvey JM, Thomas MA, Bentel JM. ETS1 induces transforming growth factor β signaling and promotes epithelial-to-mesenchymal transition in prostate cancer cells. J Cell Biochem 2018; 120:848-860. [PMID: 30161276 DOI: 10.1002/jcb.27446] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 07/16/2018] [Indexed: 02/01/2023]
Abstract
Expression of the transcriptional regulator, E26 transformation-specific 1 (ETS1), is elevated in human prostate cancers, and this is associated with more aggressive tumor behavior and a rapid progression to castrate-resistant disease. Multiple ETS1 isoforms with distinct biological activities have been characterized and in 44 matched nonmalignant and malignant human prostate specimens, messenger RNAs for two ETS1 isoforms, ETS1p51 and ETS1p42, were detected, with ETS1p51 levels significantly lower in prostate tumor compared to matched nonmalignant prostate tissues. In contrast, ETS1p51 protein, the only ETS1 isoform detected, was expressed at significantly higher levels in malignant prostate. Analysis of epithelial-to-mesenchymal transition (EMT)-associated genes regulated following overexpression of ETS1p51 in the LNCaP prostate cancer cell line predicted promotion of transforming growth factor β (TGFβ) signaling and of EMT. ETS1p51 overexpression upregulated cellular levels of the EMT transcriptional regulators, ZEB1 and SNAIL1, resulted in reduced expression of the mesenchymal marker vimentin with concomitantly elevated levels of claudin 1, an epithelial tight junction protein, and increased prostate cancer cell migration and invasion. ETS1p51-induced activation of the pro-EMT TGFβ signaling pathway that was predicted in polymerase chain reaction arrays was verified by demonstration of elevated SMAD2 phosphorylation following ETS1p51 overexpression. Attenuation of ETS1p51 effects on prostate cancer cell migration and invasion by inhibition of TGFβ pathway signaling indicated that ETS1p51 effects were in part mediated by induction of TGFβ signaling. Thus, overexpression of ETS1p51, the predominant ETS1 isoform expressed in prostate tumors, promotes an EMT program in prostate cancer cells in part via activation of TGFβ signaling, potentially accounting for the poor prognosis of ETS1-overexpressing prostate tumors.
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Affiliation(s)
- Jamie J Rodgers
- Anatomical Pathology, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia.,School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia, Australia
| | - Robert McClure
- Anatomical Pathology, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Michael R Epis
- Laboratory for Cancer Medicine, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia
| | - Ronald J Cohen
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia, Australia.,Uropath, West Leederville, Western Australia, Australia
| | - Peter J Leedman
- Laboratory for Cancer Medicine, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia.,Centre for Medical Research and Medical School, University of Western Australia, Crawley, Western Australia, Australia
| | - Jennet M Harvey
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia, Australia.,Anatomical Pathology, PathWest Laboratory Medicine, QEII Medical Centre, Crawley, Western Australia, Australia
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- Australian Prostate Cancer BioResource (APCB), Brisbane, Queensland, Australia
| | - Marc A Thomas
- Anatomical Pathology, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia.,Anatomical Pathology, PathWest Laboratory Medicine, QEII Medical Centre, Crawley, Western Australia, Australia
| | - Jacqueline M Bentel
- Anatomical Pathology, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, Western Australia, Australia.,Anatomical Pathology, PathWest Laboratory Medicine, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
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8
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Hodgkinson K, Forrest LA, Vuong N, Garson K, Djordjevic B, Vanderhyden BC. GREB1 is an estrogen receptor-regulated tumour promoter that is frequently expressed in ovarian cancer. Oncogene 2018; 37:5873-5886. [PMID: 29973689 PMCID: PMC6212416 DOI: 10.1038/s41388-018-0377-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 05/08/2018] [Accepted: 05/29/2018] [Indexed: 12/22/2022]
Abstract
Estrogenic hormone replacement therapy increases the risk of developing ovarian cancer, and estrogen promotes tumour initiation and growth in mouse models of this disease. GREB1 (Growth regulation by estrogen in breast cancer 1) is an ESR1 (estrogen receptor 1)-upregulated protein which may mediate estrogen action. GREB1 knockdown prevents hormone-driven proliferation of several breast and prostate cancer cell lines and prolongs survival of mice engrafted with ovarian cancer cells, but its mechanism of action remains unclear. In this study, we explored GREB1 function in ovarian cancer. GREB1 overexpression in ovarian cancer cell lines increased cell proliferation and migration and promoted a mesenchymal morphology associated with increased Col1a2, which encodes a collagen I subunit. GREB1 knockdown inhibited proliferation and promoted an epithelial morphology associated with decreased Col1a2. In human tissues, GREB1 was expressed in all ESR1-expressing tissues throughout the normal female reproductive tract, in addition to several tissues that did not show ESR1 expression. In a TMA of ovarian cancer cases, GREB1 was expressed in 75–85% of serous, endometrioid, mucinous, and clear cell carcinomas. Serous, endometrioid, and mucinous ovarian cancers were almost always positive for either ESR1 or GREB1, suggesting a possible reliance on signalling through ESR1 and/or GREB1. Targeting GREB1 may inhibit tumour-promoting pathways both downstream and independent of ESR1 and is therefore a possible treatment strategy worthy of further investigation.
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Affiliation(s)
- Kendra Hodgkinson
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.,Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Laura A Forrest
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.,Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Nhung Vuong
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.,Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Kenneth Garson
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.,Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Bojana Djordjevic
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Barbara C Vanderhyden
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada. .,Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, ON, Canada.
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The Ets2 Repressor Factor (Erf) Is Required for Effective Primitive and Definitive Hematopoiesis. Mol Cell Biol 2017; 37:MCB.00183-17. [PMID: 28694332 DOI: 10.1128/mcb.00183-17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/19/2017] [Indexed: 01/09/2023] Open
Abstract
Erf is a gene for a ubiquitously expressed Ets DNA-binding domain-containing transcriptional repressor. Erf haploinsufficiency causes craniosynostosis in humans and mice, while its absence in mice leads to failed chorioallantoic fusion and death at embryonic day 10.5 (E10.5). In this study, we show that Erf is required in all three waves of embryonic hematopoiesis. Mice lacking Erf in the embryo proper exhibited severe anemia and died around embryonic day 14.5. Erf epiblast-specific knockout embryos had reduced numbers of circulating blood cells from E9.5 onwards, with the development of severe anemia by E14.5. Elimination of Erf resulted in both reduced and more immature primitive erythroblasts at E9.5 to E10.5. Reduced definitive erythroid colony-forming activity was found in the bloodstream of E10.5 embryos and in the fetal liver at E11.5 to E13.5. Finally, elimination of Erf resulted in impaired repopulation ability, indicating that Erf is necessary for hematopoietic stem cell maintenance or differentiation. We conclude that Erf is required for both primitive and erythromyeloid progenitor waves of hematopoietic stem cell (HSC)-independent hematopoiesis as well as for the normal function of HSCs.
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10
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Striae Distensae: Preventative and Therapeutic Modalities to Improve Aesthetic Appearance. Dermatol Surg 2017; 43:635-648. [DOI: 10.1097/dss.0000000000001079] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Du C, Pan P, Jiang Y, Zhang Q, Bao J, Liu C. Microarray data analysis to identify crucial genes regulated by CEBPB in human SNB19 glioma cells. World J Surg Oncol 2016; 14:258. [PMID: 27716259 PMCID: PMC5054626 DOI: 10.1186/s12957-016-0997-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/30/2016] [Indexed: 01/18/2023] Open
Abstract
Background Glioma is one of the most common primary malignancies in the brain or spine. The transcription factor (TF) CCAAT/enhancer binding protein beta (CEBPB) is important for maintaining the tumor initiating capacity and invasion ability. To investigate the regulation mechanism of CEBPB in glioma, microarray data GSE47352 was analyzed. Methods GSE47352 was downloaded from Gene Expression Omnibus, including three samples of SNB19 human glioma cells transduced with non-target control small hairpin RNA (shRNA) lentiviral vectors for 72 h (normal glioma cells) and three samples of SNB19 human glioma cells transduced with CEBPB shRNA lentiviral vectors for 72 h (CEBPB-silenced glioma cells). The differentially expressed genes (DEGs) were screened using limma package and then annotated. Afterwards, the Database for Annotation, Visualization, and Integrated Discovery (DAVID) software was applied to perform enrichment analysis for the DEGs. Furthermore, the protein-protein interaction (PPI) network and transcriptional regulatory network were constructed using Cytoscape software. Results Total 529 DEGs were identified in the normal glioma cells compared with the CEBPB-silenced glioma cells, including 336 up-regulated and 193 down-regulated genes. The significantly enriched pathways included chemokine signaling pathway (which involved CCL2), focal adhesion (which involved THBS1 and THBS2), TGF-beta signaling pathway (which involved THBS1, THBS2, SMAD5, and SMAD6) and chronic myeloid leukemia (which involved TGFBR2 and CCND1). In the PPI network, CCND1 (degree = 29) and CCL2 (degree = 12) were hub nodes. Additionally, CEBPB and TCF12 might function in glioma through targeting others (CEBPB → TCF12, CEBPB → TGFBR2, and TCF12 → TGFBR2). Conclusions CEBPB might act in glioma by regulating CCL2, CCND1, THBS1, THBS2, SMAD5, SMAD6, TGFBR2, and TCF12.
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Affiliation(s)
- Chenghua Du
- Department of Neurosurgery, The Affiliated Hospital of Inner Mongolia University for the Nationalities, Huolinhe Street No.1742, Tongliao, Inner Mongolia, 028007, China.
| | - Pan Pan
- Department of Hepatology, Tongliao City Hospital for Infectious Diseases, Tongliao, Inner Mongolia, 028007, China
| | - Yan Jiang
- Department of Neurosurgery, The Affiliated Hospital of Inner Mongolia University for the Nationalities, Huolinhe Street No.1742, Tongliao, Inner Mongolia, 028007, China
| | - Qiuli Zhang
- Department of Neurosurgery, The Affiliated Hospital of Inner Mongolia University for the Nationalities, Huolinhe Street No.1742, Tongliao, Inner Mongolia, 028007, China
| | - Jinsuo Bao
- Department of Neurosurgery, The Affiliated Hospital of Inner Mongolia University for the Nationalities, Huolinhe Street No.1742, Tongliao, Inner Mongolia, 028007, China
| | - Chang Liu
- Department of Neurosurgery, The Affiliated Hospital of Inner Mongolia University for the Nationalities, Huolinhe Street No.1742, Tongliao, Inner Mongolia, 028007, China
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12
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Li Z, Liu Z, Dong S, Zhang J, Tan J, Wang Y, Ge C, Li R, Xue Y, Li M, Wang W, Xiang X, Yang J, Ding H, Geng T, Yao K, Song X. miR-506 Inhibits Epithelial-to-Mesenchymal Transition and Angiogenesis in Gastric Cancer. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 185:2412-20. [PMID: 26362716 DOI: 10.1016/j.ajpath.2015.05.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/20/2015] [Accepted: 05/26/2015] [Indexed: 12/19/2022]
Abstract
Gastric cancer is one of the most common malignancies in developing countries. We examined the possible role of miR-506 in gastric cancer, investigated its associations with the clinical outcomes of gastric cancer patients, and explored its potential role in angiogenesis and the metastasis of gastric cancer cells. We found that miR-506 expression was a useful marker for stratifying patients from early to advanced clinical stages and for overall survival prediction. miR-506 overexpression inhibited the epithelial-to-mesenchymal transition of gastric cancer cells; however, depletion of miR-506 promoted it. In addition, miR-506 suppressed gastric cancer angiogenesis and was associated with decreased matrix metalloproteinase-9 expression. We also found that ETS1 was a miR-506 target, and it was expressed in 71.10% of gastric cancer tissue samples. Moreover, ETS1 expression was associated with matrix metalloproteinase-9 expression (P < 0.001). In conclusion, miR-506 was identified as an ETS1 targeting suppressor of metastatic invasion and angiogenesis in gastric cancer.
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Affiliation(s)
- Zhen Li
- Cancer Research Institute of Southern Medical University, Guangzhou, People's Republic of China; Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Zhimin Liu
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Suwei Dong
- Cancer Research Institute of Southern Medical University, Guangzhou, People's Republic of China; Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Jianhua Zhang
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Jing Tan
- Department of General Surgery, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Ying Wang
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Chunlei Ge
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Ruilei Li
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Yuanbo Xue
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Mei Li
- Department Pathology, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Weiwei Wang
- Department Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Xudong Xiang
- Department Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Jinyan Yang
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Haiyan Ding
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Tao Geng
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China
| | - Kaitai Yao
- Cancer Research Institute of Southern Medical University, Guangzhou, People's Republic of China.
| | - Xin Song
- Cancer Research Institute of Southern Medical University, Guangzhou, People's Republic of China; Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, People's Republic of China.
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Dittmer J. The role of the transcription factor Ets1 in carcinoma. Semin Cancer Biol 2015; 35:20-38. [PMID: 26392377 DOI: 10.1016/j.semcancer.2015.09.010] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/16/2015] [Accepted: 09/16/2015] [Indexed: 12/12/2022]
Abstract
Ets1 belongs to the large family of the ETS domain family of transcription factors and is involved in cancer progression. In most carcinomas, Ets1 expression is linked to poor survival. In breast cancer, Ets1 is primarily expressed in the triple-negative subtype, which is associated with unfavorable prognosis. Ets1 contributes to the acquisition of cancer cell invasiveness, to EMT (epithelial-to-mesenchymal transition), to the development of drug resistance and neo-angiogenesis. The aim of this review is to summarize the current knowledge on the functions of Ets1 in carcinoma progression and on the mechanisms that regulate Ets1 activity in cancer.
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Affiliation(s)
- Jürgen Dittmer
- Clinic for Gynecology, Martin Luther University Halle-Wittenberg, Germany.
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Rao VH, Rai V, Stoupa S, Agrawal DK. Blockade of Ets-1 attenuates epidermal growth factor-dependent collagen loss in human carotid plaque smooth muscle cells. Am J Physiol Heart Circ Physiol 2015; 309:H1075-86. [PMID: 26254334 DOI: 10.1152/ajpheart.00378.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/27/2015] [Indexed: 12/27/2022]
Abstract
Although degradation of extracellular matrix by matrix metalloproteinases (MMPs) is thought to be involved in symptomatic (S) carotid plaques in atherosclerosis, the mechanisms of MMP expression are poorly understood. Here, we demonstrate that collagen loss in vascular smooth vessel cells (VSMCs) isolated from S plaques was induced by epidermal growth factor (EGF) through the activation of p38-MAPK and JNK-MAPK pathways. Inhibitors of p38-MAPK and JNK-MAPK signaling pathways downregulated the expression of MMP-1 and MMP-9. In addition, we examined whether v-ets erythroblastosis virus E26 oncogene homologue 1 (Ets-1), an important regulator of different genes, is involved in destabilizing S plaques in patients with carotid stenosis. We demonstrate that EGF induces Ets-1 expression and decreases interstitial and basement membrane collagen in vascular smooth muscle cells (VSMCs) from patients with carotid stenosis. Increased expression of MMP-1 and -9 and decreased collagen mRNA transcripts were also found in Ets-1-overexpressed VSMCs. Transfection with both dominant-negative form of Ets-1 and small interfering RNA blocked EGF-induced MMP-1 and -9 expressions and increased the mRNA transcripts for collagen I (α1) and collagen III (α1) in S compared with asymptomatic (AS) carotid plaques. Inhibitors of p38-MAPK (SB202190) and JNK-MAPK (SP600125) signaling pathways decreased the expression of Ets-1, MMP-1, and MMP-9 and increased collagen type I and III expression in EGF-treated VSMCs. This study provides a mechanistic insight into the role of Ets-1 in the plaque destabilization in patients with carotid stenosis involving p38-MAPK and JNK signaling pathways.
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Affiliation(s)
- Velidi H Rao
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska
| | - Vikrant Rai
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska
| | - Samantha Stoupa
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska
| | - Devendra K Agrawal
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska
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Dean KC, Huang L, Chen Y, Lu X, Liu Y. An Rb1-dependent amplification loop between Ets1 and Zeb1 is evident in thymocyte differentiation and invasive lung adenocarcinoma. BMC Mol Biol 2015; 16:8. [PMID: 25880398 PMCID: PMC4364651 DOI: 10.1186/s12867-015-0038-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 02/26/2015] [Indexed: 01/02/2023] Open
Abstract
Background Ras pathway mutation leads to induction and Erk phosphorylation and activation of the Ets1 transcription factor. Ets1 in turn induces cyclin E and cyclin dependent kinase (cdk) 2 to drive cell cycle progression. Ets1 also induces expression of the epithelial-mesenchymal transition (EMT) transcription factor Zeb1, and thereby links Ras mutation to EMT, which is thought to drive tumor invasion. Ras pathway mutations are detected by the Rb1 tumor suppression pathway, and mutation or inactivation of the Rb1 pathway is required for EMT. Results We examined linkage between Rb1, Ets1 and Zeb1. We found that an Rb1-E2F complex binds the Ets1 promoter and constitutively limits Ets1 expression. But, Rb1 repression of Zeb1 provides the major impact of Rb1 on Ets1 expression. We link Rb1 repression of Zeb1 to induction of miR-200 family members, which in turn target Ets1 mRNA. These findings suggest that Ets1 and Zeb1 comprise an amplification loop that is dependent upon miR-200 and regulated by Rb1. Thus, induction of Ets1 when the Rb1 pathway is lost may contribute to deregulated cell cycle progression through Ets1 induction of cyclin E and cdk2. Consistent with such an amplification loop, we correlate expression of Ets1 and Zeb1 in mouse and human lung adenocarcinoma. In addition we demonstrate that Ets1 expression in thymocytes is also dependent upon Zeb1. Conclusions Taken together, our results provide evidence of an Rb1-dependent Ets1-Zeb1 amplification loop in thymocyte differentiation and tumor invasion. Electronic supplementary material The online version of this article (doi:10.1186/s12867-015-0038-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kevin C Dean
- Department of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, 301 E. Muhammad Ali Blvd., Louisville, KY, 40202, USA.
| | - Li Huang
- Department of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, 301 E. Muhammad Ali Blvd., Louisville, KY, 40202, USA. .,College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China.
| | - Yao Chen
- Department of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, 301 E. Muhammad Ali Blvd., Louisville, KY, 40202, USA. .,The Second Affiliated Hospital, Central South University Xiangya School of Medicine, Changsha, Hunan Province, 410011, China.
| | - Xiaoqin Lu
- Department of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, 301 E. Muhammad Ali Blvd., Louisville, KY, 40202, USA.
| | - Yongqing Liu
- Department of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, 301 E. Muhammad Ali Blvd., Louisville, KY, 40202, USA. .,James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, 40202, USA. .,Birth Defects Center, University of Louisville Health Sciences Center, Louisville, KY, 40202, USA.
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16
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Ciau-Uitz A, Wang L, Patient R, Liu F. ETS transcription factors in hematopoietic stem cell development. Blood Cells Mol Dis 2013; 51:248-55. [DOI: 10.1016/j.bcmd.2013.07.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/04/2013] [Indexed: 01/08/2023]
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Abstract
By regulating gene expression, microRNAs (miRNAs) play pivotal roles in physiological and pathological processes. However, the regulation of miRNAs is elusive. miR-192 is a key regulator of renal fibrosis and hypertrophy in diabetic nephropathy. Natarajan et al. showed that the miR-192 gene contains an upstream region with Ets-1 and Smad3 binding sites. In control cells, all Ets-1 sites were occupied, resulting in a locked chromatin structure that kept miR-192 expression low. In response to transforming growth factor-β (TGF-β) stimulation, Smad3 and Akt were activated, and the latter further activated p300 to induce partial acetylation and dissociation of Ets-1 and the recruitment of Smad3 to the miR-192 gene, inducing transient miR-192 expression. During prolonged TGF-β treatment, p300 acetylated histone and Ets-1, resulting in complete dissociation of Ets-1 and the opening of the chromatin for sustained miR-192 expression. Thus, transcription factors and chromatin remodeling control microRNA gene expression in a dynamic, coordinated fashion.
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Affiliation(s)
- Zheng Dong
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
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