1
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Yang X, Zhang M, Xie B, Peng Z, Manning JR, Zimmerman R, Wang Q, Wei AC, Khalifa M, Reynolds M, Jin J, Om M, Zhu G, Bedja D, Jiang H, Jurczak M, Shiva S, Scott I, O’Rourke B, Kass DA, Paolocci N, Feng N. Myocardial brain-derived neurotrophic factor regulates cardiac bioenergetics through the transcription factor Yin Yang 1. Cardiovasc Res 2023; 119:571-586. [PMID: 35704040 PMCID: PMC10226756 DOI: 10.1093/cvr/cvac096] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 01/21/2023] Open
Abstract
AIMS Brain-derived neurotrophic factor (BDNF) is markedly decreased in heart failure patients. Both BDNF and its receptor, tropomyosin-related kinase receptor (TrkB), are expressed in cardiomyocytes; however, the role of myocardial BDNF signalling in cardiac pathophysiology is poorly understood. Here, we investigated the role of BDNF/TrkB signalling in cardiac stress response to exercise and pathological stress. METHODS AND RESULTS We found that myocardial BDNF expression was increased in mice with swimming exercise but decreased in a mouse heart failure model and human failing hearts. Cardiac-specific TrkB knockout (cTrkB KO) mice displayed a blunted adaptive cardiac response to exercise, with attenuated upregulation of transcription factor networks controlling mitochondrial biogenesis/metabolism, including peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α). In response to pathological stress (transaortic constriction, TAC), cTrkB KO mice showed an exacerbated heart failure progression. The downregulation of PGC-1α in cTrkB KO mice exposed to exercise or TAC resulted in decreased cardiac energetics. We further unravelled that BDNF induces PGC-1α upregulation and bioenergetics through a novel signalling pathway, the pleiotropic transcription factor Yin Yang 1. CONCLUSION Taken together, our findings suggest that myocardial BDNF plays a critical role in regulating cellular energetics in the cardiac stress response.
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Affiliation(s)
- Xue Yang
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Manling Zhang
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Cardiology, Veteran Affair Pittsburgh Healthcare System, Pittsburgh, PA, USA
| | - Bingxian Xie
- Department of Medicine, Division of Endocrinology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zishan Peng
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Janet R Manning
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Raymond Zimmerman
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Qin Wang
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
- Echocardiography lab at Heart Center, Ningxia General Hospital, Ningxia Medical University, Ningxia, China
| | - An-chi Wei
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
- Graduate Institute of Biomedical and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Moustafa Khalifa
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Michael Reynolds
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jenny Jin
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Matthew Om
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Guangshuo Zhu
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Djahida Bedja
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Hong Jiang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Michael Jurczak
- Department of Medicine, Division of Endocrinology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sruti Shiva
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Iain Scott
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Brian O’Rourke
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - David A Kass
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ning Feng
- Department of Medicine, Division of Cardiology, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Cardiology, Veteran Affair Pittsburgh Healthcare System, Pittsburgh, PA, USA
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2
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Abstract
Accumulating evidence strongly indicates that the presence of cancer stem cells (CSCs) leads to the emergence of worse clinical scenarios, such as chemo- and radiotherapy resistance, metastasis, and cancer recurrence. CSCs are a highly tumorigenic population characterized by self-renewal capacity and differentiation potential. Thus, CSCs establish a hierarchical intratumor organization that enables tumor adaptation to evade the immune response and resist anticancer therapy. YY1 functions as a transcription factor, RNA-binding protein, and 3D chromatin regulator. Thus, YY1 has multiple effects and regulates several molecular processes. Emerging evidence indicates that the development of lethal YY1-mediated cancer phenotypes is associated with the presence of or enrichment in cancer stem-like cells. Therefore, it is necessary to investigate whether and to what extent YY1 regulates the CSC phenotype. Since CSCs mirror the phenotypic behavior of stem cells, we initially describe the roles played by YY1 in embryonic and adult stem cells. Next, we scrutinize evidence supporting the contributions of YY1 in CSCs from a number of various cancer types. Finally, we identify new areas for further investigation into the YY1-CSCs axis, including the participation of YY1 in the CSC niche.
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3
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Kim SY, Zhang X, Schiattarella GG, Altamirano F, Ramos TAR, French KM, Jiang N, Szweda PA, Evers BM, May HI, Luo X, Li H, Szweda LI, Maracaja-Coutinho V, Lavandero S, Gillette TG, Hill JA. Epigenetic Reader BRD4 (Bromodomain-Containing Protein 4) Governs Nucleus-Encoded Mitochondrial Transcriptome to Regulate Cardiac Function. Circulation 2020; 142:2356-2370. [PMID: 33113340 PMCID: PMC7736324 DOI: 10.1161/circulationaha.120.047239] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 10/23/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND BET (bromodomain and extraterminal) epigenetic reader proteins, in particular BRD4 (bromodomain-containing protein 4), have emerged as potential therapeutic targets in a number of pathological conditions, including cancer and cardiovascular disease. Small-molecule BET protein inhibitors such as JQ1 have demonstrated efficacy in reversing cardiac hypertrophy and heart failure in preclinical models. Yet, genetic studies elucidating the biology of BET proteins in the heart have not been conducted to validate pharmacological findings and to unveil potential pharmacological side effects. METHODS By engineering a cardiomyocyte-specific BRD4 knockout mouse, we investigated the role of BRD4 in cardiac pathophysiology. We performed functional, transcriptomic, and mitochondrial analyses to evaluate BRD4 function in developing and mature hearts. RESULTS Unlike pharmacological inhibition, loss of BRD4 protein triggered progressive declines in myocardial function, culminating in dilated cardiomyopathy. Transcriptome analysis of BRD4 knockout mouse heart tissue identified early and specific disruption of genes essential to mitochondrial energy production and homeostasis. Functional analysis of isolated mitochondria from these hearts confirmed that BRD4 ablation triggered significant changes in mitochondrial electron transport chain protein expression and activity. Computational analysis identified candidate transcription factors participating in the BRD4-regulated transcriptome. In particular, estrogen-related receptor α, a key nuclear receptor in metabolic gene regulation, was enriched in promoters of BRD4-regulated mitochondrial genes. CONCLUSIONS In aggregate, we describe a previously unrecognized role for BRD4 in regulating cardiomyocyte mitochondrial homeostasis, observing that its function is indispensable to the maintenance of normal cardiac function.
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MESH Headings
- Animals
- Cardiomyopathy, Dilated/genetics
- Cardiomyopathy, Dilated/metabolism
- Cardiomyopathy, Dilated/pathology
- Cardiomyopathy, Dilated/physiopathology
- Cell Nucleus/genetics
- Cell Nucleus/metabolism
- Cell Nucleus/pathology
- Electron Transport Chain Complex Proteins/genetics
- Electron Transport Chain Complex Proteins/metabolism
- Energy Metabolism/genetics
- Epigenesis, Genetic
- Estrogen Receptor alpha/genetics
- Estrogen Receptor alpha/metabolism
- Gene Expression Profiling
- Heart Failure/genetics
- Heart Failure/metabolism
- Heart Failure/pathology
- Heart Failure/physiopathology
- Mice, Knockout
- Mitochondria, Heart/genetics
- Mitochondria, Heart/metabolism
- Mitochondria, Heart/pathology
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Nuclear Proteins/genetics
- Nuclear Proteins/metabolism
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Transcriptome
- Ventricular Dysfunction, Left/genetics
- Ventricular Dysfunction, Left/metabolism
- Ventricular Dysfunction, Left/pathology
- Ventricular Dysfunction, Left/physiopathology
- Ventricular Function, Left/genetics
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Affiliation(s)
- Soo Young Kim
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Xin Zhang
- Institute of Model Animal, Wuhan University, Wuhan, China
| | - Gabriele G. Schiattarella
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Francisco Altamirano
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX
| | - Thais A. R. Ramos
- Advanced Center for Chronic Disease, Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, University of Chile, Santiago, Chile
- Bioinformatics Multidisciplinary Environment, Digital Metropolis Institute, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Kristin M. French
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Nan Jiang
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Pamela A. Szweda
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Bret M. Evers
- Department of Pathology, University of Texas Southwestern, Dallas, TX, USA
| | - Herman I. May
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Xiang Luo
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Hongliang Li
- Institute of Model Animal, Wuhan University, Wuhan, China
| | - Luke I. Szweda
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Vinicius Maracaja-Coutinho
- Advanced Center for Chronic Disease, Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, University of Chile, Santiago, Chile
- Bioinformatics Multidisciplinary Environment, Digital Metropolis Institute, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Sergio Lavandero
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
- Advanced Center for Chronic Disease, Faculty of Chemical and Pharmaceutical Sciences & Faculty of Medicine, University of Chile, Santiago, Chile
| | - Thomas G. Gillette
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Joseph A. Hill
- Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern, Dallas, TX, USA
- Department of Molecular Biology, University of Texas Southwestern, Dallas, TX, USA
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4
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Verheul TCJ, van Hijfte L, Perenthaler E, Barakat TS. The Why of YY1: Mechanisms of Transcriptional Regulation by Yin Yang 1. Front Cell Dev Biol 2020; 8:592164. [PMID: 33102493 PMCID: PMC7554316 DOI: 10.3389/fcell.2020.592164] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/09/2020] [Indexed: 12/11/2022] Open
Abstract
First described in 1991, Yin Yang 1 (YY1) is a transcription factor that is ubiquitously expressed throughout mammalian cells. It regulates both transcriptional activation and repression, in a seemingly context-dependent manner. YY1 has a well-established role in the development of the central nervous system, where it is involved in neurogenesis and maintenance of homeostasis in the developing brain. In neurodevelopmental and neurodegenerative disease, the crucial role of YY1 in cellular processes in the central nervous system is further underscored. In this mini-review, we discuss the various mechanisms leading to the transcriptional activating and repressing roles of YY1, including its role as a traditional transcription factor, its interactions with cofactors and chromatin modifiers, the role of YY1 in the non-coding genome and 3D chromatin organization and the possible implications of the phase-separation mechanism on YY1 function. We provide examples on how these processes can be involved in normal development and how alterations can lead to various diseases.
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Affiliation(s)
- Thijs C J Verheul
- Department of Cell Biology, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Levi van Hijfte
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Elena Perenthaler
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Tahsin Stefan Barakat
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, Netherlands
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5
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Li L, Li Y, Timothy Sembiring Meliala I, Kasim V, Wu S. Biological roles of Yin Yang 2: Its implications in physiological and pathological events. J Cell Mol Med 2020; 24:12886-12899. [PMID: 32969187 PMCID: PMC7754051 DOI: 10.1111/jcmm.15919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 12/15/2022] Open
Abstract
Yin yang 2 (YY2) is a multifunctional zinc finger protein that belongs to the yin yang (YY) family. YY2 has dual function in regulating gene expression, as it could act either as a transcriptional activator or as a repressor of its target genes. YY2 could regulate genes that have been previously identified as targets of yin yang 1 (YY1), another member of the YY family, by binding to their common binding sequences. However, recent studies revealed that YY2 also has its own specific binding sequences, leading to its particular biological functions distinct from those of YY1. Furthermore, they have different levels or even opposite regulatory effects on common target genes, suggesting the importance of balanced YY1 and YY2 regulations in maintaining proper cellular homeostasis and biological functions. Recent studies revealed that YY2 plays crucial roles in maintaining stemness and regulating differentiation potential of embryonic stem cells, as well as in the development of the brain, nervous and cardiovascular systems. YY2 expression is also closely related to diseases, as it could act as a tumour suppressor gene that regulates tumour cell proliferation and metastasis. Moreover, YY2 is also involved in immune regulation and immune surveillance. Herein, we summarize recent perspectives regarding the regulatory functions of YY2, as well as its biological functions and relation with diseases.
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Affiliation(s)
- Lang Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.,The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, China
| | - Yanjun Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.,The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, China
| | - Ian Timothy Sembiring Meliala
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.,The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, China
| | - Vivi Kasim
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.,The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, China.,State and Local Joint Engineering Laboratory for Vascular Implants, Chongqing, China
| | - Shourong Wu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China.,The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, China.,State and Local Joint Engineering Laboratory for Vascular Implants, Chongqing, China
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6
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Zhang Y, Beketaev I, Segura AM, Yu W, Xi Y, Chang J, Ma Y, Wang J. Contribution of Increased Expression of Yin Yang 2 to Development of Cardiomyopathy. Front Mol Biosci 2020; 7:35. [PMID: 32195266 PMCID: PMC7063104 DOI: 10.3389/fmolb.2020.00035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/14/2020] [Indexed: 11/13/2022] Open
Abstract
Yin Yang 2 (YY2) is a member of the Yin Yang family of transcription factors. Although the bioactivity of YY2 has been previously studied, its role in cardiovascular diseases is not known. We observed the increased expression of YY2 in failing human hearts compared with control hearts, raising the question of whether YY2 is involved in the pathogenesis of cardiomyopathy. To investigate the potential contribution of YY2 to the development of cardiomyopathy, we crossed two independent transgenic (Tg) mouse lines, pCAG-YY2-Tg+and alpha-myosin heavy chain-cre (α-MHC-Cre), to generate two independent double transgenic (dTg) mouse lines in which the conditional cardiomyocyte-specific expression of YY2 driven by the α-MHC promoter was mediated by Cre recombinase, starting at embryonic day 9.0. In dTg mice, we observed partial embryonic lethality and hearts with defective cardiomyocyte proliferation. Surviving dTg mice from both lines developed cardiomyopathy and heart failure that occurred with aging, showing different degrees of severity that were associated with the level of transgene expression. The development of cardiomyopathy was accompanied by increased levels of cardiac disease markers, apoptosis, and cardiac fibrosis. Our studies further revealed that the Cre-mediated cardiomyocyte-specific increase in YY2 expression led to increased levels of Beclin 1 and LC3II, indicating that YY2 is involved in mediating autophagic activity in mouse hearts in vivo. Also, compared with control hearts, dTg mouse hearts showed increased JNK activity. Because autophagy and JNK activity are important for maintaining cardiac homeostasis, the dysregulation of these signaling pathways may contribute to YY2-induced cardiomyopathy and heart failure in vivo.
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Affiliation(s)
- Yi Zhang
- The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Stem Cell Engineering, Texas Heart Institute, Houston, TX, United States
| | - Ilimbek Beketaev
- Stem Cell Engineering, Texas Heart Institute, Houston, TX, United States
| | - Ana Maria Segura
- Department of Cardiac Pathology, Texas Heart Institute, Houston, TX, United States
| | - Wei Yu
- Department of Biochemistry and Molecular Biology, University of Houston, Houston, TX, United States
| | - Yutao Xi
- Laboratory of Electrophysiology, Texas Heart Institute, Houston, TX, United States
| | - Jiang Chang
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, United States
| | - Yanlin Ma
- The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
| | - Jun Wang
- Stem Cell Engineering, Texas Heart Institute, Houston, TX, United States
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7
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Liao D, Chen W, Tan CY, Wong JX, Chan PS, Tan LW, Foo R, Jiang J. Upregulation of Yy1 Suppresses Dilated Cardiomyopathy caused by Ttn insufficiency. Sci Rep 2019; 9:16330. [PMID: 31705051 PMCID: PMC6841687 DOI: 10.1038/s41598-019-52796-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 10/21/2019] [Indexed: 12/31/2022] Open
Abstract
Truncating variants in TTN (TTNtv), coding for the largest structural protein in the sarcomere, contribute to the largest portion of familial and ambulatory dilated cardiomyopathy (DCM). TTN haploinsufficiency caused by TTNtv is suggested as the disease mechanism. However, it is unclear whether TTN insufficiency causes DCM. Moreover, it is unknown whether modulation of downstream pathways serves as a therapeutic strategy for DCM caused by TTN insufficiency. Here, we show that reduction of cardiac Ttn expression by adeno-associated virus mediated shRNA (Ttn shRNA) generated DCM in mouse, demonstrating impaired cardiac performance, enlarged left ventricle (LV) and reduced LV wall thickness. A screen of 10 dysregulated and selected genes identified that Yin Yang 1 (Yy1) significantly suppressed DCM caused by Ttn shRNA. Gene profiling by RNAseq showed Yy1 modulated cell growth related genes. Ttn insufficiency activated cardiomyocyte cell cycle reentry by upregulating of Ccnd1 and Ccnd2. Cardiomyocytes activated by Ttn insufficiency did not advance to S phase by EdU incorporation assay. Yy1 promoted cardiomyocyte cell cycle by further enhancing Ccnd1 and Ccnd2 and increasing DNA replication without undergoing cell division. Importantly, upregulation of Ccnd1 and Ccnd2 suppressed DCM caused by Ttn insufficiency. Our findings demonstrate that DCM caused by Ttn insufficiency can be treated by therapeutically promoting cardiac cell cycle.
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Affiliation(s)
- Dan Liao
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Weiming Chen
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Chia Yee Tan
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Jing Xuan Wong
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Pui Shi Chan
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore
| | - Lek Wen Tan
- Genome Institute of Singapore, A*STAR, Singapore, 138672, Singapore
| | - Roger Foo
- Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore.,Genome Institute of Singapore, A*STAR, Singapore, 138672, Singapore
| | - Jianming Jiang
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore. .,Cardiovascular Research Institute, National University Health System, Centre for Translational Medicine, Singapore, 117599, Singapore.
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8
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Tet inactivation disrupts YY1 binding and long-range chromatin interactions during embryonic heart development. Nat Commun 2019; 10:4297. [PMID: 31541101 PMCID: PMC6754421 DOI: 10.1038/s41467-019-12325-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 08/30/2019] [Indexed: 12/15/2022] Open
Abstract
Tet-mediated DNA demethylation plays an important role in shaping the epigenetic landscape and chromatin accessibility to control gene expression. While several studies demonstrated pivotal roles of Tet in regulating embryonic development, little is known about their functions in heart development. Here we analyze DNA methylation and hydroxymethylation dynamics during early cardiac development in both human and mice. We find that cardiac-specific deletion of Tet2 and Tet3 in mice (Tet2/3-DKO) leads to ventricular non-compaction cardiomyopathy (NCC) with embryonic lethality. Single-cell RNA-seq analyses reveal a reduction in cardiomyocyte numbers and transcriptional reprogramming in cardiac tissues upon Tet2/3 depletion. Impaired DNA demethylation and reduced chromatin accessibility in Tet2/3-DKO mice further compromised Ying-yang1 (YY1) binding to its genomic targets, and perturbed high-order chromatin organization at key genes involved in heart development. Our studies provide evidence of the physiological role of Tet in regulating DNA methylation dynamics and chromatin organization during early heart development. Tet-mediated DNA demethylation is intimately involved in reguatling embryonic development. Here the authors characterise DNA methylation and hydroxymethylation dynamics during early cardiac development in both human and mice and provide evidence that Tet-mediated DNA demethylation plays a role in regulating chromatin organization during early heart development.
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9
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Zurkirchen L, Varum S, Giger S, Klug A, Häusel J, Bossart R, Zemke M, Cantù C, Atak ZK, Zamboni N, Basler K, Sommer L. Yin Yang 1 sustains biosynthetic demands during brain development in a stage-specific manner. Nat Commun 2019; 10:2192. [PMID: 31097699 PMCID: PMC6522535 DOI: 10.1038/s41467-019-09823-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 03/26/2019] [Indexed: 12/12/2022] Open
Abstract
The transcription factor Yin Yang 1 (YY1) plays an important role in human disease. It is often overexpressed in cancers and mutations can lead to a congenital haploinsufficiency syndrome characterized by craniofacial dysmorphisms and neurological dysfunctions, consistent with a role in brain development. Here, we show that Yy1 controls murine cerebral cortex development in a stage-dependent manner. By regulating a wide range of metabolic pathways and protein translation, Yy1 maintains proliferation and survival of neural progenitor cells (NPCs) at early stages of brain development. Despite its constitutive expression, however, the dependence on Yy1 declines over the course of corticogenesis. This is associated with decreasing importance of processes controlled by Yy1 during development, as reflected by diminished protein synthesis rates at later developmental stages. Thus, our study unravels a novel role for Yy1 as a stage-dependent regulator of brain development and shows that biosynthetic demands of NPCs dynamically change throughout development. The transcription factor Yin Yang 1 (YY1) plays an important role in human disease, yet little is known about its role in brain development. This study shows that YY1 controls cerebral cortex development by maintaining proliferation and survival of neural progenitor cells via transcriptional regulation of genes involved in metabolism and protein translation.
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Affiliation(s)
- Luis Zurkirchen
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Sandra Varum
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Sonja Giger
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Annika Klug
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Jessica Häusel
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Raphaël Bossart
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Martina Zemke
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland
| | - Claudio Cantù
- Institute of Molecular Life Sciences, University of Zurich, Zurich, 8057, Switzerland.,Wallenberg Centre for Molecular Medicine (WCMM), Department of Clinical and Experimental Medicine (IKE), Linköping University, Linköping, 58183, Sweden
| | - Zeynep Kalender Atak
- Laboratory of Computational Biology, KU Leuven Center for Human Genetics, Leuven, 3000, Belgium
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, 8093, Switzerland
| | - Konrad Basler
- Institute of Molecular Life Sciences, University of Zurich, Zurich, 8057, Switzerland
| | - Lukas Sommer
- Institute of Anatomy, University of Zurich, 8057, Zurich, Switzerland.
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10
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Hays E, Bonavida B. YY1 regulates cancer cell immune resistance by modulating PD-L1 expression. Drug Resist Updat 2019; 43:10-28. [PMID: 31005030 DOI: 10.1016/j.drup.2019.04.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 02/08/2023]
Abstract
Recent advances in the treatment of various cancers have resulted in the adaptation of several novel immunotherapeutic strategies. Notably, the recent intervention through immune checkpoint inhibitors has resulted in significant clinical responses and prolongation of survival in patients with several therapy-resistant cancers (melanoma, lung, bladder, etc.). This intervention was mediated by various antibodies directed against inhibitory receptors expressed on cytotoxic T-cells or against corresponding ligands expressed on tumor cells and other cells in the tumor microenvironment (TME). However, the clinical responses were only observed in a subset of the treated patients; it was not clear why the remaining patients did not respond to checkpoint inhibitor therapies. One hypothesis stated that the levels of PD-L1 expression correlated with poor clinical responses to cell-mediated anti-tumor immunotherapy. Hence, exploring the underlying mechanisms that regulate PD-L1 expression on tumor cells is one approach to target such mechanisms to reduce PD-L1 expression and, therefore, sensitize the resistant tumor cells to respond to PD-1/PD-L1 antibody treatments. Various investigations revealed that the overexpression of the transcription factor Yin Yang 1 (YY1) in most cancers is involved in the regulation of tumor cells' resistance to cell-mediated immunotherapies. We, therefore, hypothesized that the role of YY1 in cancer immune resistance may be correlated with PD-L1 overexpression on cancer cells. This hypothesis was investigated and analysis of the reported literature revealed that several signaling crosstalk pathways exist between the regulations of both YY1 and PD-L1 expressions. Such pathways include p53, miR34a, STAT3, NF-kB, PI3K/AKT/mTOR, c-Myc, and COX-2. Noteworthy, many clinical and pre-clinical drugs have been utilized to target these above pathways in various cancers independent of their roles in the regulation of PD-L1 expression. Therefore, the direct inhibition of YY1 and/or the use of the above targeted drugs in combination with checkpoint inhibitors should result in enhancing the cell-mediated anti-tumor cell response and also reverse the resistance observed with the use of checkpoint inhibitors alone.
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Affiliation(s)
- Emily Hays
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, 90095, United States
| | - Benjamin Bonavida
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, 90095, United States.
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Gasiūnienė M, Zentelytė A, Wojtas B, Baronaitė S, Krasovskaja N, Savickienė J, Gielniewski B, Kaminska B, Utkus A, Navakauskienė R. DNA methyltransferases inhibitors effectively induce gene expression changes suggestive of cardiomyogenic differentiation of human amniotic fluid-derived mesenchymal stem cells via chromatin remodeling. J Tissue Eng Regen Med 2019; 13:469-481. [PMID: 30637987 DOI: 10.1002/term.2800] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/31/2018] [Accepted: 01/09/2019] [Indexed: 12/17/2022]
Abstract
Human amniotic fluid-derived mesenchymal stem cells (AF-MSCs) are a new potential stem cell source for cell therapy and regenerative medicine. These are fetal mesenchymal stem cells with multilineage differentiation potential found in amniotic fluid. The aim of the present study was to evaluate in vitro differentiation initiation of AF-MSCs into cardiac progenitors upon application of inhibitors of DNA methyltransferases (DNMT), such as Decitabine (DEC; 5-aza-2'-deoxycytidine) and Zebularine (ZEB). We assessed epigenetic changes and explored patterns of genes, enriched in association with hyperacetylated H4 after induced differentiation. Upregulation of cardiomyogenesis-related genes (TNNT2, MYH6, ACTN2, and DES) and cardiac ion channels genes, downregulation of pluripotency genes markers as well as increase in Connexin43 expression indicated cardiomyogenic commitment. Evaluation of global epigenetic changes showed that levels of chromatin modifying enzymes, such as Polycomb repressive complex 2 proteins (EZH2, SUZ12), DNMT1, histone deacetylases 1 and 2 were reduced to the similar extent by both differentiation agents. Levels of specific histone marks keeping active state of chromatin (H3K4me3, H3K9Ac, and H4hyperAc) increased and marks of repressed chromatin state (H3K27me3 and H3K9me3) decreased after DEC or ZEB treatment. Chip-Seq analysis after chromatin immunoprecipitation with H4hyperAc demonstrated enrichment of around 100 functionally annotated genes, related to chromatin reorganization and cardiomyogenesis and confirmed relation between H4 hyperacetylation and gene expression. Our results demonstrate that both DEC and ZEB can be potentially used as cardiomyogenic differentiation inducers in AF-MSCs, and they cause various genetic and epigenetic changes resulting in global chromatin remodeling.
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Affiliation(s)
- Monika Gasiūnienė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Aistė Zentelytė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Bartosz Wojtas
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Sandra Baronaitė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | | | - Jūratė Savickienė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Bartlomiej Gielniewski
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Bozena Kaminska
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Algirdas Utkus
- Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Rūta Navakauskienė
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Vilnius, Lithuania
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12
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Estruch SB, Graham SA, Quevedo M, Vino A, Dekkers DHW, Deriziotis P, Sollis E, Demmers J, Poot RA, Fisher SE. Proteomic analysis of FOXP proteins reveals interactions between cortical transcription factors associated with neurodevelopmental disorders. Hum Mol Genet 2019; 27:1212-1227. [PMID: 29365100 DOI: 10.1093/hmg/ddy035] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/17/2018] [Indexed: 12/31/2022] Open
Abstract
FOXP transcription factors play important roles in neurodevelopment, but little is known about how their transcriptional activity is regulated. FOXP proteins cooperatively regulate gene expression by forming homo- and hetero-dimers with each other. Physical associations with other transcription factors might also modulate the functions of FOXP proteins. However, few FOXP-interacting transcription factors have been identified so far. Therefore, we sought to discover additional transcription factors that interact with the brain-expressed FOXP proteins, FOXP1, FOXP2 and FOXP4, through affinity-purifications of protein complexes followed by mass spectrometry. We identified seven novel FOXP-interacting transcription factors (NR2F1, NR2F2, SATB1, SATB2, SOX5, YY1 and ZMYM2), five of which have well-estabslished roles in cortical development. Accordingly, we found that these transcription factors are co-expressed with FoxP2 in the deep layers of the cerebral cortex and also in the Purkinje cells of the cerebellum, suggesting that they may cooperate with the FoxPs to regulate neural gene expression in vivo. Moreover, we demonstrated that etiological mutations of FOXP1 and FOXP2, known to cause neurodevelopmental disorders, severely disrupted the interactions with FOXP-interacting transcription factors. Additionally, we pinpointed specific regions within FOXP2 sequence involved in mediating these interactions. Thus, by expanding the FOXP interactome we have uncovered part of a broader neural transcription factor network involved in cortical development, providing novel molecular insights into the transcriptional architecture underlying brain development and neurodevelopmental disorders.
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Affiliation(s)
- Sara B Estruch
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands
| | - Sarah A Graham
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands
| | - Martí Quevedo
- Department of Cell Biology, Erasmus MC, Rotterdam 3015 CN, The Netherlands
| | - Arianna Vino
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands
| | - Dick H W Dekkers
- Center for Proteomics, Erasmus MC, Rotterdam 3015 CN, The Netherlands
| | - Pelagia Deriziotis
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands
| | - Elliot Sollis
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands
| | - Jeroen Demmers
- Center for Proteomics, Erasmus MC, Rotterdam 3015 CN, The Netherlands
| | - Raymond A Poot
- Department of Cell Biology, Erasmus MC, Rotterdam 3015 CN, The Netherlands
| | - Simon E Fisher
- Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen 6525 XD, The Netherlands.,Donders Institute for Brain, Cognition and Behaviour, Nijmegen 6525 EN, The Netherlands
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13
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Yan B, Wang J. UBIAD1 expression is associated with cardiac hypertrophy in spontaneously hypertensive rats. Mol Med Rep 2018; 19:651-659. [PMID: 30483777 DOI: 10.3892/mmr.2018.9693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 10/05/2018] [Indexed: 11/06/2022] Open
Abstract
The present study investigated the potential role of UbiA prenyltransferase domain-containing 1 (UBIAD1) in the pathogenesis of hypertensive cardiac hypertrophy. Spontaneously hypertensive rats (SHRs) and Wistar‑Kyoto (WKY) rats at 8, 16 and 28 weeks of age were used. Blood pressure was measured using a non‑invasive tail cut‑off system. Cardiac functional index was assessed by arterial catheterization. Myocardial structure and cell apoptosis were evaluated by hematoxylin and eosin staining, and terminal deoxynucleotidyl‑transferase‑mediated dUTP nick end labeling assays, respectively. Myocardial expression of UBIAD1, coenzyme Q10 (CoQ10), endothelial nitric oxide synthase (eNOS) and atrial natriuretic peptide were evaluated by immunohistochemistry, western blotting and reverse transcription‑quantitative polymerase chain reaction. Circulating and myocardial expression of nitric oxide (NO) were measured using the Griess method. SHRs exhibited increased blood pressure and cardiomyocyte apoptosis, as well as cardiac hypertrophy, compared with age‑matched WKY rats. Myocardial expression of UBIAD1 was significantly decreased in SHRs in an age‑dependent manner. Similarly, myocardial CoQ10 and eNOS expression were significantly reduced in SHR compared to age‑matched WKY rats, and these expression levels additionally decreased further with aging. Serum and myocardial NO expression was additionally decreased in SHRs. Decreased UBIAD1 expression in SHR hearts was associated with decreased levels of CoQ10, eNOS and NO. Given the well‑established role of UBIAD1 in the regulation of NO signaling, reduced expression of UBIAD1 in SHR hearts potentially contributed to the pathogenesis of hypertensive cardiac hypertrophy. Therefore, UBIAD1 may represent a potential therapeutic target for clinical treatment of hypertensive cardiac hypertrophy.
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Affiliation(s)
- Bingju Yan
- Department of Cardiology, First Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Jun Wang
- Department of General Surgery, First Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
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Kim JS, Son SH, Kim MY, Choi D, Jang IS, Paik SS, Chae JH, Uversky VN, Kim CG. Diagnostic and prognostic relevance of CP2c and YY1 expression in hepatocellular carcinoma. Oncotarget 2018; 8:24389-24400. [PMID: 28412749 PMCID: PMC5421856 DOI: 10.18632/oncotarget.15462] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 02/02/2017] [Indexed: 12/23/2022] Open
Abstract
Recent studies have demonstrated an oncogenic role of the transcription factor (TF) CP2c in hepatocellular carcinoma (HCC) based on a strong correlation between CP2c expression, tumor grade, and aggressiveness. We recently found that CP2c directly interacts with another TF, YY1, which is also overexpressed in multiple cancers, including HCC. To evaluate if these proteins are co-regulated in carcinogenesis, we analyzed the expression of CP2c and YY1 in HCC (n = 136) tissues and examined the correlation between their expression and clinicopathological characteristics of HCC. Receiver operating characteristic analysis exhibited the validity of CP2c and nuclear YY1 expression as a diagnostic factor in HCC tissues. High expression of CP2c was significantly correlated with patient age, and higher histological grade, American Joint Committee on Cancer (AJCC) stage, and small and large vessel invasion in HCC tissues, whereas high expression of nuclear YY1 was significantly associated with higher AJCC stage and small vessel invasion. In univariate and multivariate analyses, high expression of CP2c was significantly correlated with disease free survival (DFS), indicating that CP2c expression is an independent prognostic factor for DFS in HCC patients. Patients with high expression of both CP2c and nuclear YY1 usually had a shorter median survival time and worse DFS prognosis than other patients, suggesting that combined detection of CP2c and nuclear YY1 is a useful prognostic marker in HCC patients.
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Affiliation(s)
- Ji Sook Kim
- Department of Life Science and Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea.,Department of Pathology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Seung Han Son
- Department of Life Science and Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Min Young Kim
- Department of Life Science and Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - DongHo Choi
- Department of Surgery, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Ik-Soon Jang
- Division of Bioconvergence, Korea Basic Science Institute, Daejeon 34133, Korea
| | - Seung Sam Paik
- Department of Pathology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Ji Hyung Chae
- Department of Life Science and Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Vladimir N Uversky
- Department of Molecular Medicine, USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida 33612, USA
| | - Chul Geun Kim
- Department of Life Science and Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
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15
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From Flies to Mice: The Emerging Role of Non-Canonical PRC1 Members in Mammalian Development. EPIGENOMES 2018. [DOI: 10.3390/epigenomes2010004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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16
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Taguchi YH. Identification of Candidate Drugs for Heart Failure Using Tensor Decomposition-Based Unsupervised Feature Extraction Applied to Integrated Analysis of Gene Expression Between Heart Failure and DrugMatrix Datasets. INTELLIGENT COMPUTING THEORIES AND APPLICATION 2017. [DOI: 10.1007/978-3-319-63312-1_45] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Control of embryonic stem cell self-renewal and differentiation via coordinated alternative splicing and translation of YY2. Proc Natl Acad Sci U S A 2016; 113:12360-12367. [PMID: 27791185 DOI: 10.1073/pnas.1615540113] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Translational control of gene expression plays a key role during the early phases of embryonic development. Here we describe a transcriptional regulator of mouse embryonic stem cells (mESCs), Yin-yang 2 (YY2), that is controlled by the translation inhibitors, Eukaryotic initiation factor 4E-binding proteins (4E-BPs). YY2 plays a critical role in regulating mESC functions through control of key pluripotency factors, including Octamer-binding protein 4 (Oct4) and Estrogen-related receptor-β (Esrrb). Importantly, overexpression of YY2 directs the differentiation of mESCs into cardiovascular lineages. We show that the splicing regulator Polypyrimidine tract-binding protein 1 (PTBP1) promotes the retention of an intron in the 5'-UTR of Yy2 mRNA that confers sensitivity to 4E-BP-mediated translational suppression. Thus, we conclude that YY2 is a major regulator of mESC self-renewal and lineage commitment and document a multilayer regulatory mechanism that controls its expression.
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18
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Beketaev I, Zhang Y, Weng KC, Rhee S, Yu W, Liu Y, Mager J, Wang J. cis-regulatory control of Mesp1 expression by YY1 and SP1 during mouse embryogenesis. Dev Dyn 2015; 245:379-87. [DOI: 10.1002/dvdy.24349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 08/20/2015] [Accepted: 09/12/2015] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ilimbek Beketaev
- Center for Stem Cell Engineering, Department of Basic Research Laboratories; Texas Heart Institute at St. Luke's Episcopal Hospital; Houston Texas USA
| | - Yi Zhang
- In Vitro Fertilization Center; Affiliated Hospital of Hainan Medical University; Haikou Hainan People's Republic of China
| | - Kuo-Chan Weng
- Department of Biology and Biochemistry; University of Houston; Houston Texas USA
| | - Siyeon Rhee
- Department of Veterinary & Animal Sciences; University of Massachusetts; Amherst Massachusetts USA
| | - Wei Yu
- Department of Biology and Biochemistry; University of Houston; Houston Texas USA
| | - Yu Liu
- Department of Biology and Biochemistry; University of Houston; Houston Texas USA
| | - Jesse Mager
- Department of Veterinary & Animal Sciences; University of Massachusetts; Amherst Massachusetts USA
| | - Jun Wang
- Center for Stem Cell Engineering, Department of Basic Research Laboratories; Texas Heart Institute at St. Luke's Episcopal Hospital; Houston Texas USA
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