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Tahtasakal R, Sener EF, Delibasi N, Hamurcu Z, Mehmetbeyoglu E, Bayram KK, Gunes I, Goksuluk D, Emirogullari ON. Overexpression of the PTEN Gene in Myocardial Tissues of Coronary Bypass Surgery Patients. Arq Bras Cardiol 2023; 120:e20220169. [PMID: 37042855 PMCID: PMC10263415 DOI: 10.36660/abc.20220169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 12/07/2022] [Accepted: 12/14/2022] [Indexed: 03/29/2023] Open
Abstract
BACKGROUND Coronary artery disease is a complex disorder that causes death worldwide. One of the genes involved in developing this disease may be PTEN. OBJECTIVES This study aimed to investigate the PTEN gene and protein expression in tissue and blood samples taken from coronary bypass surgery patients. METHODS Molecular studies were performed at Erciyes University Genome and Stem Cell Center (GENKOK). Right atrial appendage and blood samples were taken from the central vein of 22 coronary bypass surgery patients before starting and ending cardiopulmonary bypass. PTEN expression was determined using quantitative real-time PCR and western blot analysis. The significance level was accepted as p<0.05. RESULTS There was no significant difference in the PTEN gene expression in blood samples taken before and after cardiopulmonary bypass. However, a substantial increase in both protein and gene expression levels of P-PTEN and PTEN was observed in the tissue samples. Myocardial expression of the PTEN gene was significantly increased at the end of the cardiopulmonary bypass. PTEN gene expression in the post-cardiopulmonary bypass period was increased when compared to the pre-bypass period, but it was insignificant when compared to healthy controls. CONCLUSION This study first revealed the role of the PTEN gene by analyzing both mRNA and protein expression in coronary bypass patients, appearing in both myocardial tissue and blood samples. Increased levels of PTEN may be a marker in myocardial tissue for patients with coronary artery disease.
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Affiliation(s)
- Reyhan Tahtasakal
- Erciyes University Medical Faculty Department of Medical BiologyKayseriTurquiaErciyes University Medical Faculty Department of Medical Biology, Kayseri – Turquia
- Erciyes University Genome and Stem Cell CenterKayseriTurquiaErciyes University Genome and Stem Cell Center, Kayseri – Turquia
| | - Elif Funda Sener
- Erciyes University Medical Faculty Department of Medical BiologyKayseriTurquiaErciyes University Medical Faculty Department of Medical Biology, Kayseri – Turquia
- Erciyes University Genome and Stem Cell CenterKayseriTurquiaErciyes University Genome and Stem Cell Center, Kayseri – Turquia
| | - Nesrin Delibasi
- Erciyes University Genome and Stem Cell CenterKayseriTurquiaErciyes University Genome and Stem Cell Center, Kayseri – Turquia
| | - Zuhal Hamurcu
- Erciyes University Medical Faculty Department of Medical BiologyKayseriTurquiaErciyes University Medical Faculty Department of Medical Biology, Kayseri – Turquia
- Erciyes University Genome and Stem Cell CenterKayseriTurquiaErciyes University Genome and Stem Cell Center, Kayseri – Turquia
| | - Ecmel Mehmetbeyoglu
- Erciyes University Genome and Stem Cell CenterKayseriTurquiaErciyes University Genome and Stem Cell Center, Kayseri – Turquia
| | - Keziban Korkmaz Bayram
- Ankara Yildirim Beyazit UniversityMedical FacultyDepartment of Medical GeneticsAnkaraTurquiaAnkara Yildirim Beyazit University Medical Faculty Department of Medical Genetics, Ankara – Turquia
| | - Isin Gunes
- Erciyes UniversityMedical FacultyDepartment of Anesthesiology and ReanimationKayseriTurquiaErciyes University Medical Faculty Department of Anesthesiology and Reanimation, Kayseri – Turquia
| | - Dincer Goksuluk
- Erciyes UniversityMedical FacultyDepartment of Department of Biostatistics and Medical InformaticsKayseriTurquiaErciyes University Medical Faculty Department of Department of Biostatistics and Medical Informatics, Kayseri – Turquia
| | - Omer Naci Emirogullari
- Erciyes UniversityMedical FacultyDepartment of Cardiovascular SurgeryKayseriTurquiaErciyes University Medical Faculty Department of Cardiovascular Surgery, Kayseri – Turquia
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Lian X, Lv M, Shi B. MicroRNA-144 silencing attenuates intimal hyperplasia by directly targeting PTEN. Clin Exp Hypertens 2022; 44:1-9. [PMID: 36121042 DOI: 10.1080/10641963.2022.2123923] [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: 04/18/2022] [Accepted: 09/07/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Intimal hyperplasia contributed by phenotypic switching of vascular smooth muscle cell (VSMC) plays an important role in the pathogenesis of various cardiovascular diseases. MicroRNA-144 (miR-144) is recently reported to be implicated in the development of atherosclerosis. However, the individual role of miR-144 in VSMCs phenotypic modulation and intimal hyperplasia currently still remains unknown. METHODS AND RESULTS Here we found that miR-144 expression was upregulated in carotid arteries with intimal hyperplasia that subjected to wire injury and the consistent results were obtained with dedifferentiated VSMCs upon platelet-derived growth factor-BB (PDGF-BB) stimulation. Loss-of-function study showed that miR-144 knockdown decreased the ability of VSMC proliferation tested by Brdu and CCK8, and reduced the migrate capability analyzed by Transwell, whereas increased the differentiated SMC marker gene expression examined by RT-PCR. The above results were reversed by miR-144 overexpression. Mechanistically, we have demonstrated that PTEN was the direct target of miR-144 that was responsible for the alleviated effect of miR-144 inhibition on phenotypic switching of VSMCs. Notably, mice injected with miR-144 inhibitor attenuated the formation of neointimal lesions in response to wire injury and maintained the mature SMC marker expression inhibited the proliferation and migration of VSMCs. CONCLUSION Our research exhibited that miR-144 knockdown attenuated intimal hyperplasia through inhibiting the VSMC phenotypic switching, which was partially mediated by directly targeting to PTEN. Taken together, these evidences suggested that miR-144 may act as a promising therapeutic target for arterial restenosis.
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Affiliation(s)
- Xinlong Lian
- Department of Cardiology, LiaoBu Hospital of Guangdong Medical University, Dongguan, China
| | - Ming Lv
- Department of Radiology, LiaoBu Hospital of Guangdong Medical University, Dongguan, China
| | - Bo Shi
- Department of Intensive Care Unit, LiaoBu Hospital of Guangdong Medical University, Dongguan, China
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Liu JT, Yao QP, Chen Y, Lv F, Liu Z, Bao H, Han Y, Zhang ML, Jiang ZL, Qi YX. Arterial cyclic stretch regulates Lamtor1 and promotes neointimal hyperplasia via circSlc8a1/miR-20a-5p axis in vein grafts. Am J Cancer Res 2022; 12:4851-4865. [PMID: 35836818 PMCID: PMC9274756 DOI: 10.7150/thno.69551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 06/03/2022] [Indexed: 01/12/2023] Open
Abstract
Rationale: Neointimal hyperplasia caused by dedifferentiation and proliferation of venous smooth muscle cells (SMCs) is the major challenge for restenosis after coronary artery bypass graft. Herein, we investigated the role of Lamtor1 in neointimal formation and the regulatory mechanism of non-coding RNA underlying this process. Methods: Using a "cuff" model, veins were grafted into arterial system and Lamtor1 expression which was correlated with the activation of mTORC1 signaling and dedifferentiation of SMCs, were measured by Western blot. Whole transcriptome deep sequencing (RNA-seq) of the grafted veins combined with bioinformatic analysis identified highly conserved circSlc8a1 and its interaction with miR-20a-5p, which may target Lamtor1. CircSlc8a1 was biochemically characterized by Sanger sequencing and resistant to RNase R digestion. The cytoplasmic location of circSlc8a1 was shown by fluorescence in situ hybridization (FISH). RNA pull-down, luciferase assays and RNA immunoprecipitation (RIP) with Ago2 assays were used to identify the interaction circSlc8a1 with miR-20a-5p. Furthermore, arterial mechanical stretch (10% elongation) was applied in vitro. Results:In vivo, Lamtor1 was significantly enhanced in grafted vein and activated mTORC1 signaling to promote dedifferentiation of SMCs. Arterial mechanical stretch (10% elongation) induced circSlc8a1 expression and positively regulated Lamtor1, activated mTORC1 and promoted SMC dedifferentiation and proliferation. Local injection of circSlc8a1 siRNA or SMC-specific Lamtor1 knockout mice prevented neointimal hyperplasia in vein grafts in vivo. Conclusions: Our study reveals a novel mechanobiological mechanism underlying the dedifferentiation and proliferation of venous SMCs in neointimal hyperplasia. CircSlc81/miR-20a-5p/Lamtor1 axis induced by arterial cyclic stretch may be a potential clinical target that attenuates neointimal hyperplasia in grafted vessels.
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Affiliation(s)
- Ji-Ting Liu
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Qing-Ping Yao
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Chen
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Fan Lv
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Ze Liu
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Han Bao
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Yue Han
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Ming-Liang Zhang
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Disease, Shanghai, China.,✉ Corresponding authors: Dr. Ying-Xin Qi, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Zong-Lai Jiang, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Ming-Liang Zhang, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Xuhui, Shanghai 200233 China. Tel.: +86-21-24058337, Fax: +86-21-24058337, E-mail:
| | - Zong-Lai Jiang
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.,✉ Corresponding authors: Dr. Ying-Xin Qi, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Zong-Lai Jiang, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Ming-Liang Zhang, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Xuhui, Shanghai 200233 China. Tel.: +86-21-24058337, Fax: +86-21-24058337, E-mail:
| | - Ying-Xin Qi
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.,✉ Corresponding authors: Dr. Ying-Xin Qi, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Zong-Lai Jiang, Institute of Mechanobiology & Medical Engineering, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang, Shanghai 200240, China. Tel.: +86-21-34204863, Fax: +86-21-34204118, E-mail: ; Dr. Ming-Liang Zhang, Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Key Clinical Center for Metabolic Disease, 600 Yishan Road, Xuhui, Shanghai 200233 China. Tel.: +86-21-24058337, Fax: +86-21-24058337, E-mail:
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DING H, SHI Z, ZHANG L, GAO N, CHENG X, LIN H, ZHANG Z, ZHANG G. Progranulin (PGRN) is serves as an inflammation-response biomarker and promotes lung damage in burn-induced Sepsis via the SIRT1 Pathways by ROS. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.36720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Hui DING
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Zhaoling SHI
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Lu ZHANG
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Nairong GAO
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Xiaoning CHENG
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Haibo LIN
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Zhihong ZHANG
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
| | - Guocheng ZHANG
- The Second Hospital Affiated Shaanxi University of Chinese Medicine, China
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The pseudogene PTENP1 regulates smooth muscle cells as a competing endogenous RNA. Clin Sci (Lond) 2019; 133:1439-1455. [PMID: 31235554 DOI: 10.1042/cs20190156] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/30/2019] [Accepted: 06/24/2019] [Indexed: 02/06/2023]
Abstract
The long non-coding RNA (lncRNA) PTENP1 is a pseudogene of phosphatase and tensin homologue deleted on chromosome ten (PTEN), has been implicated in smooth muscle cell (SMC) proliferation and apoptosis. PTENP1 is the pseudogene of PTEN. However, it is unclear whether and how PTENP1 functions in the proliferation and apoptosis of human aortic SMCs (HASMCs). Here, we hypothesised that PTENP1 inhibits HASMC proliferation and enhances apoptosis by promoting PTEN expression. PCR analysis and Western blot assays respectively showed that both PTENP1 and PTEN were up-regulated in human aortic dissection (AD) samples. PTENP1 overexpression significantly increased the protein expression of PTEN, promoted apoptosis and inhibited the proliferation of HASMCs. PTENP1 silencing exhibited the opposite effects and mitigated H2O2-induced apoptosis of HASMCs. In an angiotensin II (Ang II)-induced mouse aortic aneurysm (AA) model, PTENP1 overexpression potentiated aortic SMC apoptosis, exacerbated aneurysm formation. Mechanistically, RNA pull-down assay and a series of luciferase reporter assays using miR-21 mimics or inhibitors identified PTENP1 as a molecular sponge for miR-21 to endogenously compete for the binding between miR-21 and the PTEN transcript, releasing PTEN expression. This finding was further supported by in vitro immunofluorescent evidence showing decreased cell apoptosis upon miR-21 mimic administration under baseline PTENP1 overexpression. Ex vivo rescue of PTEN significantly mitigated the SMC apoptosis induced by PTENP1 overexpression. Finally, Western blot assays showed substantially reduced Akt phosphorylation and cyclin D1 and cyclin E levels with up-regulated PTENP1 in HASMCs. Our study identified PTENP1 as a mediator of HASMC homeostasis and suggests that PTENP1 is a potential target in AD or AA intervention.
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Integration of Gene Expression Profile Data to Verify Hub Genes of Patients with Stanford A Aortic Dissection. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3629751. [PMID: 31380418 PMCID: PMC6662449 DOI: 10.1155/2019/3629751] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 05/26/2019] [Accepted: 06/20/2019] [Indexed: 12/16/2022]
Abstract
Thoracic aortic dissection (TAD) is a catastrophic disease worldwide, but the pathogenic genes and pathways are largely unclear. This study aims at integrating two gene expression profile datasets and verifying hub genes and pathways involved in TAD as well as exploring potential molecular mechanisms. We will combine our mRNAs expression profile (6 TAD tissues versus 6 non-TAD tissues) and GSE52093 downloaded from the Gene Expression Omnibus (GEO) database. The two mRNAs expression profiles contained 13 TAD aortic tissues and 11 non-TAD tissues. The two expression profile datasets were integrated and we found out coexpression of differentially expressed genes (DEGs) using bioinformatics methods. The gene ontology and pathway enrichment of DEGs were performed by DAVID and Kyoto Encyclopedia of Genes and Genomes online analyses, respectively. The protein-protein interaction networks of the DEGs were constructed according to the data from the STRING database. Cytohubber calculating result shows the top 10 hub genes with CDC20, AURKA, RFC4, MCM4, TYMS, MCM2, DLGAP5, FANCI, BIRC5, and POLE2. Module analysis revealed that TAD was associated with significant pathways including cell cycle, vascular smooth muscle contraction, and adrenergic signaling in cardiomyocytes. The qRT-PCR result showed that the expression levels of all the hub genes were significantly increased in OA samples (p < 0.05), and these candidate genes could be used as potential diagnostic biomarkers and therapeutic targets of TAD.
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MicroRNA-20a participates in the aerobic exercise-based prevention of coronary artery disease by targeting PTEN. Biomed Pharmacother 2017; 95:756-763. [DOI: 10.1016/j.biopha.2017.08.086] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/11/2017] [Accepted: 08/23/2017] [Indexed: 12/25/2022] Open
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Zhu Z, Zheng X, Li D, Wang T, Xu R, Piao H, Liu K. Prx1 promotes the proliferation and migration of vascular smooth muscle cells in a TLR4-dependent manner. Mol Med Rep 2016; 15:345-351. [DOI: 10.3892/mmr.2016.5987] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 08/02/2016] [Indexed: 11/06/2022] Open
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Sur S, Swier VJ, Radwan MM, Agrawal DK. Increased Expression of Phosphorylated Polo-Like Kinase 1 and Histone in Bypass Vein Graft and Coronary Arteries following Angioplasty. PLoS One 2016; 11:e0147937. [PMID: 26820885 PMCID: PMC4731576 DOI: 10.1371/journal.pone.0147937] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/11/2016] [Indexed: 12/12/2022] Open
Abstract
Interventional procedures, including percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass surgery (CABG) to re-vascularize occluded coronary arteries, injure the vascular wall and cause endothelial denudation and medial vascular smooth muscle cell (VSMCs) metaplasia. Proliferation of the phenotypically altered SMCs is the key event in the pathogenesis of intimal hyperplasia (IH). Several kinases and phosphatases regulate cell cycle in SMC proliferation. It is our hypothesis that increased expression and activity of polo-like kinase-1 (PLK1) in SMCs, following PTCA and CABG, contributes to greater SMC proliferation in the injured than uninjured blood vessels. Using immunofluorescence (IF), we assessed the expression of PLK1 and phosphorylated-PLK1 (pPLK1) in post-PTCA coronary arteries, and superficial epigastric vein grafts (SEV) and compared it with those in the corresponding uninjured vessels. We also compared the expressions of mitotic marker phospho-histone, synthetic-SMC marker, contractile SMC marker, IFN-γ and phosphorylated STAT-3 in the post-PTCA arteries, SEV-grafts, and the uninjured vessels. Immunostaining demonstrated an increase in the number of cells expressing PLK1 and pPLK1 in the neointima of post PTCA-coronary arteries and SEV-grafts compared to their uninjured counterparts. VSMCs in the neointima showed an increased expression of phospho-histone, synthetic and contractile SMC markers, IFN-γ and phosphorylated STAT-3. However, VSMCs of uninjured coronaries and SEV had no significant expression of the aforementioned proteins. These data suggest that PLK1 might play a critical role in VSMC mitosis in hyperplastic intima of the injured vessels. Thus, novel therapies to inhibit PLK1 could be developed to inhibit the mitogenesis of VSMCs and control neointimal hyperplasia.
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Affiliation(s)
- Swastika Sur
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Vicki J. Swier
- Department of Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Mohamed M. Radwan
- Department of Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE, United States of America
| | - Devendra K. Agrawal
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE, United States of America
- Department of Clinical & Translational Science, Creighton University School of Medicine, Omaha, NE, United States of America
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Zhang Y, Liu D, Wang L, Wang S, Yu X, Dai E, Liu X, Luo S, Jiang W. Integrated systems approach identifies risk regulatory pathways and key regulators in coronary artery disease. J Mol Med (Berl) 2015. [PMID: 26208504 DOI: 10.1007/s00109-015-1315-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
UNLABELLED Coronary artery disease (CAD) is the most common type of heart disease. However, the molecular mechanisms of CAD remain elusive. Regulatory pathways are known to play crucial roles in many pathogenic processes. Thus, inferring risk regulatory pathways is an important step toward elucidating the mechanisms underlying CAD. With advances in high-throughput data, we developed an integrated systems approach to identify CAD risk regulatory pathways and key regulators. Firstly, a CAD-related core subnetwork was identified from a curated transcription factor (TF) and microRNA (miRNA) regulatory network based on a random walk algorithm. Secondly, candidate risk regulatory pathways were extracted from the subnetwork by applying a breadth-first search (BFS) algorithm. Then, risk regulatory pathways were prioritized based on multiple CAD-associated data sources. Finally, we also proposed a new measure to prioritize upstream regulators. We inferred that phosphatase and tensin homolog (PTEN) may be a key regulator in the dysregulation of risk regulatory pathways. This study takes a closer step than the identification of disease subnetworks or modules. From the risk regulatory pathways, we could understand the flow of regulatory information in the initiation and progression of the disease. Our approach helps to uncover its potential etiology. KEY MESSAGES We developed an integrated systems approach to identify risk regulatory pathways. We proposed a new measure to prioritize the key regulators in CAD. PTEN may be a key regulator in dysregulation of the risk regulatory pathways.
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Affiliation(s)
- Yan Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Dianming Liu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Lihong Wang
- Institute of Cancer Prevention and Treatment, Harbin Medical University, Harbin, China
| | - Shuyuan Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Xuexin Yu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Enyu Dai
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Xinyi Liu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Shanshun Luo
- Department of Gerontology, The First Hospital of Harbin Medical University, Harbin Medical University, Harbin, China.
| | - Wei Jiang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China.
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Sun Y, Lin Z, Ding W, Wei Q, Shi Y, Wang C. Preoperative glucose level has different effects on the endogenous extracellular matrix-related gene expression in saphenous vein of type 2 diabetic patients undergoing coronary surgery. Diab Vasc Dis Res 2014; 11:226-234. [PMID: 24781271 DOI: 10.1177/1479164114529677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (DM) severely reduces the benefits of coronary artery bypass grafting (CABG). However, few studies investigated the correlation between preoperative glucose level and endogenous extracellular matrix (ECM)-related gene expression of saphenous vein (SV) conduits in diabetic patients. METHODS A total of 130 patients were divided into high-glucose (HG), low-glucose (LG) and control group according to the preoperative level of blood glucose. The expression of ECM-related genes was analysed by microarray. RESULTS Compared with control group, 30 genes showed at least a threefold change in expression in HG group; up-regulation was observed in 24 genes. However, there were only 21 ECM-related genes showed at least a threefold change in expression between the LG and control group. Compared with HG group, matrix metalloproteinases' (MMPs) expression was significantly decreased in LG and control groups. In contrast to the decrease in MMPs' expression, expression of tissue inhibitors of metalloproteinases (TIMPs) was increased. CONCLUSION This study suggested that different preoperative diabetic status affected the expression of ECM-related genes in SV. ECM-related genes were more significantly imbalanced in diabetic patients with uncontrolled preoperative blood glucose than those with well-controlled preoperative blood glucose.
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Affiliation(s)
- Yongxin Sun
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Zibo Lin
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Wenjun Ding
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Qiang Wei
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yunqing Shi
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Chunsheng Wang
- Department of Cardiac Surgery, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
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Sur S, Sugimoto JT, Agrawal DK. Coronary artery bypass graft: why is the saphenous vein prone to intimal hyperplasia? Can J Physiol Pharmacol 2014; 92:531-45. [PMID: 24933515 DOI: 10.1139/cjpp-2013-0445] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Proliferation and migration of smooth muscle cells and the resultant intimal hyperplasia cause coronary artery bypass graft failure. Both internal mammary artery and saphenous vein are the most commonly used bypass conduits. Although an internal mammary artery graft is immune to restenosis, a saphenous vein graft is prone to develop restenosis. We found significantly higher activity of phosphatase and tensin homolog (PTEN) in the smooth muscle cells of the internal mammary artery than in the saphenous vein. In this article, we critically review the pathophysiology of vein-graft failure with detailed discussion of the involvement of various factors, including PTEN, matrix metalloproteinases, and tissue inhibitor of metalloproteinases, in uncontrolled proliferation and migration of smooth muscle cells towards the lumen, and invasion of the graft conduit. We identified potential target sites that could be useful in preventing and (or) reversing unwanted consequences following coronary artery bypass graft using saphenous vein.
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Affiliation(s)
- Swastika Sur
- a Department of Biomedical Science, Creighton University School of Medicine, 2500 California Plaza, Omaha, NE 68178, USA
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Zhang H, Gong Y, Wang Z, Jiang L, Chen R, Fan X, Zhu H, Han L, Li X, Xiao J, Kong X. Apelin inhibits the proliferation and migration of rat PASMCs via the activation of PI3K/Akt/mTOR signal and the inhibition of autophagy under hypoxia. J Cell Mol Med 2014; 18:542-53. [PMID: 24447518 PMCID: PMC3955159 DOI: 10.1111/jcmm.12208] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 11/15/2013] [Indexed: 12/11/2022] Open
Abstract
Apelin is highly expressed in the lungs, especially in the pulmonary vasculature, but the functional role of apelin under pathological conditions is still undefined. Hypoxic pulmonary hypertension is the most common cause of acute right heart failure, which may involve the remodeling of artery and regulation of autophagy. In this study, we determined whether treatment with apelin regulated the proliferation and migration of rat pulmonary arterial smooth muscle cells (SMCs) under hypoxia, and investigated the underlying mechanism and the relationship with autophagy. Our data showed that hypoxia activated autophagy significantly at 24 hrs. The addition of exogenous apelin decreased the level of autophagy and further inhibited pulmonary arterial SMC (PASMC) proliferation via activating downstream phosphatidylinositol-3-kinase (PI3K)/protein kinase B (Akt)/the mammalian target of Rapamycin (mTOR) signal pathways. The inhibition of the apelin receptor (APJ) system by siRNA abolished the inhibitory effect of apelin in PASMCs under hypoxia. This study provides the evidence that exogenous apelin treatment contributes to inhibit the proliferation and migration of PASMCs by regulating the level of autophagy.
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Affiliation(s)
- Hongyu Zhang
- School of Pharmacy, Zhejiang Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Sadahiro H, Ishihara H, Goto H, Oka F, Shirao S, Yoneda H, Suzuki M. Postoperative dural arteriovenous fistula in a patient with Cowden disease: a case report. J Stroke Cerebrovasc Dis 2013; 23:572-5. [PMID: 23680687 DOI: 10.1016/j.jstrokecerebrovasdis.2013.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 03/27/2013] [Accepted: 04/13/2013] [Indexed: 11/17/2022] Open
Abstract
We report the case of a 37-year-old male with Cowden disease that caused a gradual neurological deficit because of rupture of a brain stem cavernous hemangioma. Removal of the hemangioma and hematoma was performed with an infrafacial triangle approach. Nine months after the operation, magnetic resonance imaging showed abnormal vessels on the cerebellar surface. Digital subtraction angiography showed a dural arteriovenous fistula (dAVF) from part of the meningeal artery to the ectatic inferior vermian vein with cortical reflux. After embolization, surgical obliteration of the dAVF was performed. Surgical findings showed neovascularization in the thickened dura, in which dural vessels shunted to cerebellar vessels through adhesion between the dura mater and cerebellar surface. Therefore, the thickened dura was removed with the cerebellar surface. This case suggests that postoperative angiogenesis may cause arteriovenous fistula in patients with Cowden disease.
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MESH Headings
- Adult
- Angiography, Digital Subtraction
- Biopsy
- Brain Stem Neoplasms/complications
- Brain Stem Neoplasms/diagnosis
- Brain Stem Neoplasms/genetics
- Brain Stem Neoplasms/surgery
- Central Nervous System Vascular Malformations/diagnosis
- Central Nervous System Vascular Malformations/etiology
- Central Nervous System Vascular Malformations/therapy
- Cerebral Angiography/methods
- Dura Mater/blood supply
- Embolization, Therapeutic
- Hamartoma Syndrome, Multiple/complications
- Hamartoma Syndrome, Multiple/diagnosis
- Hamartoma Syndrome, Multiple/genetics
- Hemangioma, Cavernous, Central Nervous System/complications
- Hemangioma, Cavernous, Central Nervous System/diagnosis
- Hemangioma, Cavernous, Central Nervous System/genetics
- Hemangioma, Cavernous, Central Nervous System/surgery
- Hematoma/diagnosis
- Hematoma/etiology
- Hematoma/surgery
- Humans
- Magnetic Resonance Imaging
- Male
- Mutation
- Neovascularization, Pathologic
- Neurosurgical Procedures/adverse effects
- PTEN Phosphohydrolase/genetics
- Reoperation
- Rupture, Spontaneous
- Treatment Outcome
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Affiliation(s)
- Hirokazu Sadahiro
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan.
| | - Hideyuki Ishihara
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Hisaharu Goto
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Fumiaki Oka
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Satoshi Shirao
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Hiroshi Yoneda
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
| | - Michiyasu Suzuki
- Department of Neurosurgery and Clinical Neuroscience, Yamaguchi University School of Medicine, Yamaguchi, Japan
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15
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Abstract
INTRODUCTION PTEN (phosphatase and tensin homolog deleted on chromosome 10) plays a pivotal role in controlling intracellular signaling for cell survival and proliferation by inhibiting the PI3K/Akt pathway, and its dysfunction is associated with several neoplastic diseases. PTEN is frequently found mutated in many pathological conditions highlighting its importance in normal physiological function. Unlike several cellular proteins which are activated by phosphorylation, PTEN is inactivated upon phosphorylation by specific kinases which phosphorylate serine and threonine residues in its C-terminal region. Therefore, development of therapeutic agents that specifically target kinases and kinase-domain-containing proteins affecting PTEN would lead to the treatment of PTEN-related diseases. AREAS COVERED With increasing evidence on the role of PTEN in many human diseases, the present review focuses on the clinical relevance of PTEN with a comprehensive list of currently identified modulators of PTEN, and proposes potentially novel molecular targets which could aid in the development of drug candidates for the treatment of PTEN-related diseases such as cardiovascular diseases, diabetes, obesity, cancer, autism, Parkinson's and Alzheimer's diseases. EXPERT OPINION This review describes several target sites that could help in the development of novel drug candidates to regulate or restore the normal physiological functions of PTEN and are essential in the treatment of human diseases where PTEN plays a pivotal role.
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Affiliation(s)
- Chandra S Boosani
- Creighton University School of Medicine, Department of Biomedical Sciences, Omaha, NE 68178, USA
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16
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Insulin-like growth factor (IGF) binding protein 2 functions coordinately with receptor protein tyrosine phosphatase β and the IGF-I receptor to regulate IGF-I-stimulated signaling. Mol Cell Biol 2012; 32:4116-30. [PMID: 22869525 DOI: 10.1128/mcb.01011-12] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Insulin-like growth factor I (IGF-I) is a mitogen for vascular smooth muscle cells (VSMC) and has been implicated in the development and progression of atherosclerosis. IGF binding proteins (IGFBPs) modify IGF-I actions independently of IGF binding, but a receptor-based mechanism by which they function has not been elucidated. We investigated the role of IGFBP-2 and receptor protein tyrosine phosphatase β (RPTPβ) in regulating IGF-I signaling and cellular proliferation. IGFBP-2 bound RPTPβ, which led to its dimerization and inactivation. This enhanced PTEN tyrosine phosphorylation and inhibited PTEN activity. Utilization of substrate trapping and phosphatase-dead mutants showed that RPTPβ bound specifically to PTEN and dephosphorylated it. IGFBP-2 knockdown led to decreased PTEN tyrosine phosphorylation and decreased AKT Ser473 activation. IGFBP-2 enhanced IGF-I-stimulated VSMC migration and proliferation. Analysis of aortas obtained from IGFBP-2(-/-) mice showed that RPTPβ was activated, and this was associated with inhibition of IGF-I stimulated AKT Ser473 phosphorylation and VSMC proliferation. These changes were rescued following administration of IGFBP-2. These findings present a novel mechanism for coordinate regulation of IGFBP-2 and IGF-I signaling functions that lead to stimulation of VSMC proliferation. The results have important implications for understanding how IGFBPs modulate the cellular response to IGF-I.
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Muto A, Model L, Ziegler K, Eghbalieh SD, Dardik A. Mechanisms of vein graft adaptation to the arterial circulation: insights into the neointimal algorithm and management strategies. Circ J 2010; 74:1501-1512. [PMID: 20606326 PMCID: PMC3662001 DOI: 10.1253/circj.cj-10-0495] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
For patients with coronary artery disease or limb ischemia, placement of a vein graft as a conduit for a bypass is an important and generally durable strategy among the options for arterial reconstructive surgery. Vein grafts adapt to the arterial environment, and the limited formation of intimal hyperplasia in the vein graft wall is thought to be an important component of successful vein graft adaptation. However, it is also known that abnormal, or uncontrolled, adaptation may lead to abnormal vessel wall remodeling with excessive neointimal hyperplasia, and ultimately vein graft failure and clinical complications. Therefore, understanding the venous-specific pathophysiological and molecular mechanisms of vein graft adaptation are important for clinical vein graft management. Of particular importance, it is currently unknown whether there exist several specific distinct molecular differences in the venous mechanisms of adaptation that are distinct from arterial post-injury responses; in particular, the participation of the venous determinant Eph-B4 and the vascular protective molecule Nogo-B may be involved in mechanisms of vessel remodeling specific to the vein. This review describes (1) venous biology from embryonic development to the mature quiescent state, (2) sequential pathologies of vein graft neointima formation, and (3) novel candidates for strategies of vein graft management. Scientific inquiry into venous-specific adaptation mechanisms will ultimately provide improvements in vein graft clinical outcomes.
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Affiliation(s)
- Akihito Muto
- Interdepartmental Program in Vascular Biology and Therapeutics
- the Section of Vascular Surgery, Yale University School of Medicine, New Haven, CT
| | - Lynn Model
- Interdepartmental Program in Vascular Biology and Therapeutics
- the Section of Vascular Surgery, Yale University School of Medicine, New Haven, CT
| | - Kenneth Ziegler
- Interdepartmental Program in Vascular Biology and Therapeutics
- the Section of Vascular Surgery, Yale University School of Medicine, New Haven, CT
| | - Sammy D.D. Eghbalieh
- Interdepartmental Program in Vascular Biology and Therapeutics
- St. Mary's Hospital, Waterbury, CT
| | - Alan Dardik
- Interdepartmental Program in Vascular Biology and Therapeutics
- the Section of Vascular Surgery, Yale University School of Medicine, New Haven, CT
- the VA Connecticut Healthcare System, West Haven, CT
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