1
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Zhou P, VanDusen NJ, Zhang Y, Cao Y, Sethi I, Hu R, Zhang S, Wang G, Ye L, Mazumdar N, Chen J, Zhang X, Guo Y, Li B, Ma Q, Lee JY, Gu W, Yuan GC, Ren B, Chen K, Pu WT. Dynamic changes in P300 enhancers and enhancer-promoter contacts control mouse cardiomyocyte maturation. Dev Cell 2023; 58:898-914.e7. [PMID: 37071996 PMCID: PMC10231645 DOI: 10.1016/j.devcel.2023.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 02/16/2023] [Accepted: 03/05/2023] [Indexed: 04/20/2023]
Abstract
Cardiomyocyte differentiation continues throughout murine gestation and into the postnatal period, driven by temporally regulated expression changes in the transcriptome. The mechanisms that regulate these developmental changes remain incompletely defined. Here, we used cardiomyocyte-specific ChIP-seq of the activate enhancer marker P300 to identify 54,920 cardiomyocyte enhancers at seven stages of murine heart development. These data were matched to cardiomyocyte gene expression profiles at the same stages and to Hi-C and H3K27ac HiChIP chromatin conformation data at fetal, neonatal, and adult stages. Regions with dynamic P300 occupancy exhibited developmentally regulated enhancer activity, as measured by massively parallel reporter assays in cardiomyocytes in vivo, and identified key transcription factor-binding motifs. These dynamic enhancers interacted with temporal changes of the 3D genome architecture to specify developmentally regulated cardiomyocyte gene expressions. Our work provides a 3D genome-mediated enhancer activity landscape of murine cardiomyocyte development.
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Affiliation(s)
- Pingzhu Zhou
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Nathan J VanDusen
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Yanchun Zhang
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Yangpo Cao
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Isha Sethi
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Rong Hu
- Ludwig Institute for Cancer Research, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Shuo Zhang
- Houston Methodist Hospital Research Institute, Houston, TX 77030, USA
| | - Guangyu Wang
- Cardiovascular Department, Houston Methodist, Weill Cornell Medical College, Houston, TX, USA
| | - Lincai Ye
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Neil Mazumdar
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Jian Chen
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Xiaoran Zhang
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Yuxuan Guo
- Peking University Health Science Center, Beijing, China
| | - Bin Li
- Ludwig Institute for Cancer Research, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Qing Ma
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Julianna Y Lee
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA
| | - Weiliang Gu
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA; Department of Pharmacology, School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Guo-Cheng Yuan
- Department of Genetics and Genomic Sciences, Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Bing Ren
- Ludwig Institute for Cancer Research, Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Kaifu Chen
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA.
| | - William T Pu
- Department of Cardiology, Boston Children's Hospital, Boston, MA, USA; Harvard Stem Cell Institute, Cambridge, MA, USA.
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2
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The Polyunsaturated Fatty Acids, EPA and DHA, Ameliorate Myocardial Infarction-induced Heart Failure by Inhibiting p300-HAT Activity in Rats. J Nutr Biochem 2022; 106:109031. [DOI: 10.1016/j.jnutbio.2022.109031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 11/24/2021] [Accepted: 03/18/2022] [Indexed: 12/25/2022]
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3
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Kolomenski JE, Delea M, Simonetti L, Fabbro MC, Espeche LD, Taboas M, Nadra AD, Bruque CD, Dain L. An update on genetic variants of the NKX2-5. Hum Mutat 2020; 41:1187-1208. [PMID: 32369864 DOI: 10.1002/humu.24030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 04/03/2020] [Accepted: 04/26/2020] [Indexed: 12/13/2022]
Abstract
NKX2-5 is a homeodomain transcription factor that plays a crucial role in heart development. It is the first gene where a single genetic variant (GV) was found to be associated with congenital heart diseases in humans. In this study, we carried out a comprehensive survey of NKX2-5 GVs to build a unified, curated, and updated compilation of all available GVs. We retrieved a total of 1,380 unique GVs. From these, 970 had information on their frequency in the general population and 143 have been linked to pathogenic phenotypes in humans. In vitro effect was ascertained for 38 GVs. The homeodomain had the biggest cluster of pathogenic variants in the protein: 49 GVs in 60 residues, 23 in its third α-helix, where 11 missense variants may affect protein-DNA interaction or the hydrophobic core. We also pinpointed the likely location of pathogenic GVs in four linear motifs. These analyses allowed us to assign a putative explanation for the effect of 90 GVs. This study pointed to reliable pathogenicity for GVs in helix 3 of the homeodomain and may broaden the scope of functional and structural studies that can be done to better understand the effect of GVs in NKX2-5 function.
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Affiliation(s)
- Jorge E Kolomenski
- Departamento de Química Biológica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN-CONICET, Buenos Aires, Argentina.,Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Biociencias, Biotecnología y Biología Traslacional, iB3, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Marisol Delea
- Centro Nacional de Genética Médica, ANLIS, Buenos Aires, Argentina
| | - Leandro Simonetti
- Department of Chemistry-Biomedical Centre, Uppsala University, Uppsala, Sweden
| | | | - Lucía D Espeche
- Centro Nacional de Genética Médica, ANLIS, Buenos Aires, Argentina
| | - Melisa Taboas
- Centro Nacional de Genética Médica, ANLIS, Buenos Aires, Argentina
| | - Alejandro D Nadra
- Departamento de Química Biológica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IQUIBICEN-CONICET, Buenos Aires, Argentina.,Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Biociencias, Biotecnología y Biología Traslacional, iB3, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carlos D Bruque
- Centro Nacional de Genética Médica, ANLIS, Buenos Aires, Argentina.,Instituto de Biología y Medicina Experimental, (IBYME-CONICET), Buenos Aires, Argentina
| | - Liliana Dain
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Biociencias, Biotecnología y Biología Traslacional, iB3, Universidad de Buenos Aires, Buenos Aires, Argentina.,Centro Nacional de Genética Médica, ANLIS, Buenos Aires, Argentina.,Instituto de Biología y Medicina Experimental, (IBYME-CONICET), Buenos Aires, Argentina
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4
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Li T, He Z, Zhang X, Tian M, Jiang K, Cheng G, Wang Y. The status of MAPK cascades contributes to the induction and activation of Gata4 and Nkx2.5 during the stepwise process of cardiac differentiation. Cell Signal 2018; 54:17-26. [PMID: 30471465 DOI: 10.1016/j.cellsig.2018.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/15/2018] [Accepted: 11/20/2018] [Indexed: 12/28/2022]
Abstract
Cardiac differentiation in vitro is a complex, stepwise process that is rigidly governed by a subset of transcription factors and signaling cascades. In this study, we investigated the cooperation of cardiac-specific transcription factors Gata4 and Nkx2.5, as well as mitogen-activated protein kinase (MAPK) cascades. P19 embryonic carcinoma cells were induced into spontaneously beating cardiomyocytes utilizing a two-step protocol that comprised an early stage and a late stage of differentiation. During early-stage differentiation in suspension culture, P19 cells aggregated to form embryoid bodies (EBs), and the Gata4 and Nkx2.5 genes were induced. However, Gata4 expressed at the early stage of differentiation was incapable of activating downstream gene expression, as it was localized in the cytoplasm and prone to degradation. After EBs were plated for late-stage differentiation in adherent culture, the MAPK cascades were highly activated and contributed to the activation of Gata4 and Nkx2.5. Specifically, we revealed that p38 signaling participated in regulating the localization and stabilization of Gata4 and Nkx2.5. Additionally, the JNK cascade regulated late-stage cardiac differentiation; JNK kinase reduced Gata4 stabilization and conversely alleviated Nkx2.5 degradation by direct interaction and phosphorylation of Nkx2.5. Finally, we found that the C-terminal domain of Nkx2.5 was required for its stabilization under conditions of oxidative stress and JNK activation. Overall, our results indicated that the induction and activation of Gata4 and Nkx2.5 during early- and late-stage cardiac differentiation was closely associated with the function of the MAPK signaling cascades.
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Affiliation(s)
- Tao Li
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Zezhao He
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xia Zhang
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Mei Tian
- School of Medicine, Hunan Normal University, Changsha, Hunan 410081, China
| | - Kesheng Jiang
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
| | - Guanchang Cheng
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng, Henan 475000, China
| | - Yunlong Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China.
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5
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Geng Y, Liu J, Xie Y, Jiang H, Zuo K, Li T, Liu Z. Trichostatin A promotes GLI1 degradation and P21 expression in multiple myeloma cells. Cancer Manag Res 2018; 10:2905-2914. [PMID: 30214285 PMCID: PMC6118243 DOI: 10.2147/cmar.s167330] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Histone deacetylase inhibitors are promising drugs for the future application in cancer therapy. Trichostatin A (TSA), a histone deacetylase inhibitor, exhibits effective antitumor effects in various cancers. However, the effects and underlying mechanisms of TSA on multiple myeloma (MM) are not fully investigated. Methods In the present study, RPMI8226 and MM.1S cells treated with TSA were used for cell proliferation, cell cycle, and survival examinations, then the localization and post transcriptional modification of GLI1 protein as well as the target gene P21 were analyzed using immunofluorescence, immunoprecipitation, western blots and qPCR, respectively. Results TSA exerted a time and dose-dependent cytotoxicity on MM cell lines, and suppressed the proliferation of MM cells and induced an upregulation of p21 protein accompanied by a decreased expression of cyclin D1. TSA treatment led to a downregulation of GLI1, and the nuclear accumulation of GLI1 was also inhibited. As a result of hedgehog inhibition, the expression of MYC and SURVIVIN was greatly weakened after TSA treatment. Furthermore, TSA accelerated GLI1 degradation in a proteasome-dependent manner. Additionally, p21 induction also contributed to GLI1 downregulation via reducing the transcription of GLI in mRNA level. Rescue experiments verified that exogenous expression of GLI1 alleviated MM cell apoptosis induced by TSA. Conclusion These results indicated that TSA represses MM cell growth and induces cell apoptosis. The inhibition of hedgehog signaling is an important mechanism accounting for the cytotoxic effects of TSA.
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Affiliation(s)
- Yan Geng
- Department of Clinical Laboratory, Shanxi Provincial People's Hospital, Taiyuan, Shanxi, 030012 China
| | - Jing Liu
- Department of Physiology and Pathophysiology, Tianjin Medical University, Heping, Tianjin, 300070 China,
| | - Ying Xie
- Department of Physiology and Pathophysiology, Tianjin Medical University, Heping, Tianjin, 300070 China,
| | - Hongmei Jiang
- Department of Physiology and Pathophysiology, Tianjin Medical University, Heping, Tianjin, 300070 China,
| | - Kai Zuo
- Department of Infectious Disease, Binzhou People's Hospital, Binzhou, Shandong, 264000 China
| | - Tao Li
- Department of Immunology, School of Medicine, Hunan Normal University, Changsha, Hunan, 410013, China
| | - Zhiqiang Liu
- Department of Physiology and Pathophysiology, Tianjin Medical University, Heping, Tianjin, 300070 China,
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6
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Ramialison M, Waardenberg AJ, Schonrock N, Doan T, de Jong D, Bouveret R, Harvey RP. Analysis of steric effects in DamID profiling of transcription factor target genes. Genomics 2017; 109:75-82. [DOI: 10.1016/j.ygeno.2017.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/19/2017] [Accepted: 01/29/2017] [Indexed: 01/08/2023]
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7
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Tang X, Ma H, Han L, Zheng W, Lu YB, Chen XF, Liang ST, Wei GH, Zhang ZQ, Chen HZ, Liu DP. SIRT1 deacetylates the cardiac transcription factor Nkx2.5 and inhibits its transcriptional activity. Sci Rep 2016; 6:36576. [PMID: 27819261 PMCID: PMC5098195 DOI: 10.1038/srep36576] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 10/17/2016] [Indexed: 01/06/2023] Open
Abstract
The homeodomain transcription factor Nkx2.5/Csx is critically essential for heart specification, morphogenesis, and homeostasis. Acetylation/deacetylation is important for the localization, stability and activation of transcription factors. It remains unknown how Nkx2.5 is deacetylated and how Nkx2.5 acetylation determines its activity. In this study, we provide evidence that the NAD+-dependent class III protein deacetylase SIRT1 deacetylates Nkx2.5 in cardiomyocytes and represses the transcriptional activity of Nkx2.5. We show that SIRT1 interacts with the C-terminus of Nkx2.5 and deacetylates Nkx2.5 at lysine 182 in the homeodomain. The mutation of Nkx2.5 at lysine 182 reduces its transcriptional activity. Furthermore, SIRT1 inhibits the transcriptional activity of Nkx2.5 and represses the expression of its target genes partly by reducing Nkx2.5 binding to its co-factors, including SRF and TBX5. Taken together, these findings demonstrate that SIRT1 deacetylates Nkx2.5 and inhibits the transcriptional activity of Nkx2.5.
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Affiliation(s)
- Xiaoqiang Tang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Han Ma
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Lei Han
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Wei Zheng
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Yun-Biao Lu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Xiao-Feng Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Shu-Ting Liang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Gong-Hong Wei
- Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Zhu-Qin Zhang
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - Hou-Zao Chen
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
| | - De-Pei Liu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, P.R. China
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8
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Nimura K, Yamamoto M, Takeichi M, Saga K, Takaoka K, Kawamura N, Nitta H, Nagano H, Ishino S, Tanaka T, Schwartz RJ, Aburatani H, Kaneda Y. Regulation of alternative polyadenylation by Nkx2-5 and Xrn2 during mouse heart development. eLife 2016; 5. [PMID: 27331609 PMCID: PMC4982761 DOI: 10.7554/elife.16030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/21/2016] [Indexed: 11/21/2022] Open
Abstract
Transcription factors organize gene expression profiles by regulating promoter activity. However, the role of transcription factors after transcription initiation is poorly understood. Here, we show that the homeoprotein Nkx2-5 and the 5’-3’ exonuclease Xrn2 are involved in the regulation of alternative polyadenylation (APA) during mouse heart development. Nkx2-5 occupied not only the transcription start sites (TSSs) but also the downstream regions of genes, serving to connect these regions in primary embryonic cardiomyocytes (eCMs). Nkx2-5 deficiency affected Xrn2 binding to target loci and resulted in increases in RNA polymerase II (RNAPII) occupancy and in the expression of mRNAs with long 3’untranslated regions (3’ UTRs) from genes related to heart development. siRNA-mediated suppression of Nkx2-5 and Xrn2 led to heart looping anomaly. Moreover, Nkx2-5 genetically interacts with Xrn2 because Nkx2-5+/-Xrn2+/-, but neither Nkx2-5+/-nor Xrn2+/-, newborns exhibited a defect in ventricular septum formation, suggesting that the association between Nkx2-5 and Xrn2 is essential for heart development. Our results indicate that Nkx2-5 regulates not only the initiation but also the usage of poly(A) sites during heart development. Our findings suggest that tissue-specific transcription factors is involved in the regulation of APA. DOI:http://dx.doi.org/10.7554/eLife.16030.001 About one in every hundred babies is born with problems that either affect the structure of the heart or how it works. These problems are known as congenital heart disease, and result when the development of the heart is disrupted. How the heart develops is determined by thousands of genes whose activity or “expression” must be precisely regulated. Proteins called transcription factors can control gene expression; therefore, researchers may discover new ways of treating congenital heart disease if they can understand how transcription factors work during normal heart development. To produce a protein, the information in a gene must first be “transcribed” to form a molecule of messenger RNA (mRNA). Not all of the mRNA sequence is subsequently “translated” to form the protein; this includes a stretch at the end of the mRNA called the 3’ untranslated region. The length of the 3’ untranslated region for a particular mRNA may vary depending on the type of cell it has been produced in, and this length can influence how efficiently the mRNA is translated to form a protein. However, it was not clear what changes the length of the 3’ untranslated region. Nimura et al. have now studied mice to investigate the role of a transcription factor called Nkx2-5, which was known to be important for heart development. This revealed that in addition to its expected role in starting the transcription of genes that are important for heart development, Nkx2-5 also controls the length of 3’ untranslated regions of certain mRNAs. To do so, Nkx2-5 binds to a protein called Xrn2 that stops transcription when the end of the gene is reached. Mouse embryos that lacked Nkx2-5 produced mRNAs containing long 3’ untranslated regions from genes related to the development of the heart. Furthermore, suppressing the activity of both Nkx2-5 and Xrn2 resulted in the embryos developing heart defects. The findings of Nimura et al. suggest that transcription factors found in specific tissues are responsible for the different lengths of 3’ untranslated regions in mRNAs in different tissues. Furthermore, incorrectly regulating the length of these regions appears to be linked to the development of congenital heart disease. The next step is to understand exactly how the failure to correctly regulate the length of 3’ untranslated regions contributes to congenital heart disease. DOI:http://dx.doi.org/10.7554/eLife.16030.002
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Affiliation(s)
- Keisuke Nimura
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masamichi Yamamoto
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Makiko Takeichi
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kotaro Saga
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Katsuyoshi Takaoka
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Norihiko Kawamura
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan.,Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hirohisa Nitta
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiromichi Nagano
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
| | - Saki Ishino
- Center for Medical Research and Education, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tatsuya Tanaka
- Center for Medical Research and Education, Osaka University Graduate School of Medicine, Suita, Japan
| | - Robert J Schwartz
- Department of Biology and Biochemistry, University of Houston, Houston, Unites States
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan
| | - Yasufumi Kaneda
- Division of Gene Therapy Science, Osaka University Graduate School of Medicine, Suita, Japan
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9
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Pradhan L, Gopal S, Li S, Ashur S, Suryanarayanan S, Kasahara H, Nam HJ. Intermolecular Interactions of Cardiac Transcription Factors NKX2.5 and TBX5. Biochemistry 2016; 55:1702-10. [DOI: 10.1021/acs.biochem.6b00171] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Lagnajeet Pradhan
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sunil Gopal
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Shichang Li
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Shayan Ashur
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Saai Suryanarayanan
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Hideko Kasahara
- Department of Functional Genomics, University of Florida, Gainesville, Florida 32610, United States
| | - Hyun-Joo Nam
- Department
of Bioengineering, University of Texas at Dallas, Richardson, Texas 75080, United States
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10
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Harris LG, Wang SH, Mani SK, Kasiganesan H, Chou CJ, Menick DR. Evidence for a non-canonical role of HDAC5 in regulation of the cardiac Ncx1 and Bnp genes. Nucleic Acids Res 2015; 44:3610-7. [PMID: 26704971 PMCID: PMC4856964 DOI: 10.1093/nar/gkv1496] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 12/10/2015] [Indexed: 11/12/2022] Open
Abstract
Class IIa histone deacetylases (HDACs) are very important for tissue specific gene regulation in development and pathology. Because class IIa HDAC catalytic activity is low, their exact molecular roles have not been fully elucidated. Studies have suggested that class IIa HDACs may serve as a scaffold to recruit the catalytically active class I HDAC complexes to their substrate. Here we directly address whether the class IIa HDAC, HDAC5 may function as a scaffold to recruit co-repressor complexes to promoters. We examined two well-characterized cardiac promoters, the sodium calcium exchanger (Ncx1) and the brain natriuretic peptide (Bnp) whose hypertrophic upregulation is mediated by both class I and IIa HDACs. Selective inhibition of class IIa HDACs did not prevent adrenergic stimulated Ncx1 upregulation, however HDAC5 knockout prevented pressure overload induced Ncx1 upregulation. Using the HDAC5((-/-)) mouse we show that HDAC5 is required for the interaction of the HDAC1/2/Sin3a co-repressor complexes with the Nkx2.5 and YY1 transcription factors and critical for recruitment of the HDAC1/Sin3a co-repressor complex to either the Ncx1 or Bnp promoter. Our novel findings support a non-canonical role of class IIa HDACs in the scaffolding of transcriptional regulatory complexes, which may be relevant for therapeutic intervention for pathologies.
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Affiliation(s)
- Lillianne G Harris
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, SC 29425, USA
| | - Sabina H Wang
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, SC 29425, USA
| | - Santhosh K Mani
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, SC 29425, USA
| | - Harinath Kasiganesan
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, SC 29425, USA
| | - C James Chou
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, SC 29425, USA
| | - Donald R Menick
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, SC 29425, USA Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29425, USA
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11
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Lovato TL, Sensibaugh CA, Swingle KL, Martinez MM, Cripps RM. The Drosophila Transcription Factors Tinman and Pannier Activate and Collaborate with Myocyte Enhancer Factor-2 to Promote Heart Cell Fate. PLoS One 2015. [PMID: 26225919 PMCID: PMC4520567 DOI: 10.1371/journal.pone.0132965] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Expression of the MADS domain transcription factor Myocyte Enhancer Factor 2 (MEF2) is regulated by numerous and overlapping enhancers which tightly control its transcription in the mesoderm. To understand how Mef2 expression is controlled in the heart, we identified a late stage Mef2 cardiac enhancer that is active in all heart cells beginning at stage 14 of embryonic development. This enhancer is regulated by the NK-homeodomain transcription factor Tinman, and the GATA transcription factor Pannier through both direct and indirect interactions with the enhancer. Since Tinman, Pannier and MEF2 are evolutionarily conserved from Drosophila to vertebrates, and since their vertebrate homologs can convert mouse fibroblast cells to cardiomyocytes in different activator cocktails, we tested whether over-expression of these three factors in vivo could ectopically activate known cardiac marker genes. We found that mesodermal over-expression of Tinman and Pannier resulted in approximately 20% of embryos with ectopic Hand and Sulphonylurea receptor (Sur) expression. By adding MEF2 alongside Tinman and Pannier, a dramatic expansion in the expression of Hand and Sur was observed in almost all embryos analyzed. Two additional cardiac markers were also expanded in their expression. Our results demonstrate the ability to initiate ectopic cardiac fate in vivo by the combination of only three members of the conserved Drosophila cardiac transcription network, and provide an opportunity for this genetic model system to be used to dissect the mechanisms of cardiac specification.
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Affiliation(s)
- TyAnna L. Lovato
- Department of Biology, University of New Mexico, Albuquerque, NM 87131–1091, United States of America
| | - Cheryl A. Sensibaugh
- Department of Biology, University of New Mexico, Albuquerque, NM 87131–1091, United States of America
| | - Kirstie L. Swingle
- Department of Biology, University of New Mexico, Albuquerque, NM 87131–1091, United States of America
| | - Melody M. Martinez
- Department of Biology, University of New Mexico, Albuquerque, NM 87131–1091, United States of America
| | - Richard M. Cripps
- Department of Biology, University of New Mexico, Albuquerque, NM 87131–1091, United States of America
- * E-mail:
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12
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Cardiac transcription factor Nkx2.5 interacts with p53 and modulates its activity. Arch Biochem Biophys 2015; 569:45-53. [DOI: 10.1016/j.abb.2015.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 02/01/2015] [Indexed: 01/30/2023]
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13
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Histone deacetylase 1 and 3 regulate the mesodermal lineage commitment of mouse embryonic stem cells. PLoS One 2014; 9:e113262. [PMID: 25412078 PMCID: PMC4239075 DOI: 10.1371/journal.pone.0113262] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 09/08/2014] [Indexed: 02/01/2023] Open
Abstract
The important role of histone acetylation alteration has become increasingly recognized in mesodermal lineage differentiation and development. However, the contribution of individual histone deacetylases (HDACs) to mesoderm specification remains poorly understood. In this report, we found that trichostatin A (TSA), an inhibitor of histone deacetylase (HDACi), could induce early differentiation of embryonic stem cells (ESCs) and promote mesodermal lineage differentiation. Further analysis showed that the expression levels of HDAC1 and 3 are decreased gradually during ESCs differentiation. Ectopic expression of HDAC1 or 3 significantly inhibited differentiation into the mesodermal lineage. By contrast, loss of either HDAC1 or 3 enhanced the mesodermal differentiation of ESCs. Additionally, we demonstrated that the activity of HDAC1 and 3 is indeed required for the regulation of mesoderm gene expression. Furthermore, HDAC1 and 3 were found to interact physically with the T-box transcription factor T/Bry, which is critical for mesodermal lineage commitment. These findings indicate a key mechanism for the specific role of HDAC1 and 3 in mammalian mesoderm specification.
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14
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Wang J, Sontag D, Cattini PA. Heart-specific expression of FGF-16 and a potential role in postnatal cardioprotection. Cytokine Growth Factor Rev 2014; 26:59-66. [PMID: 25106133 DOI: 10.1016/j.cytogfr.2014.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 07/11/2014] [Accepted: 07/14/2014] [Indexed: 10/25/2022]
Abstract
Fibroblast growth factor 16 (FGF-16) was originally cloned from rat heart. Subsequent investigation of mouse FGF-16, including generation of null mice, revealed a specific pattern of expression in the endocardium and epicardium, and role for FGF-16 during embryonic heart development. FGF-16 is expressed mainly in brown adipose tissue during rat embryonic development, but is expressed mainly in the murine heart after birth. There is also an apparent switch from limited endocardial and epicardial expression in the embryo to the myocardium in the perinatal period. The FGF-16 gene and its location on the X chromosome are conserved between human and murine species, and no other member of the FGF family shows this pattern of spatial and temporal expression. The human and murine FGF-16 gene promoter regions also share an equivalent location for TATA sequences, as well as adjacent putative binding sites for transcription factors linked to cardiac expression and response to stress. Recent evidence has implicated nonsense mutation of FGF-16 with increased cardiovascular risk, and FGF-16 supplementation with cardioprotection. Here we review the important role of FGF-16 in embryonic heart development, its gene regulation, and evidence for FGF-16 as an endogenous and exogenous cardiac-specific and protective factor in the postnatal heart. Moreover, given the conservation of the FGF-16 gene and its chromosomal location between species, the question of support for a cardiac role in the human population is also considered.
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Affiliation(s)
- Jie Wang
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada.
| | - David Sontag
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada
| | - Peter A Cattini
- Department of Physiology & Pathophysiology, University of Manitoba, Manitoba, Canada
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15
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Costa MW, Lee S, Furtado MB, Xin L, Sparrow DB, Martinez CG, Dunwoodie SL, Kurtenbach E, Mohun T, Rosenthal N, Harvey RP. Complex SUMO-1 regulation of cardiac transcription factor Nkx2-5. PLoS One 2011; 6:e24812. [PMID: 21931855 PMCID: PMC3171482 DOI: 10.1371/journal.pone.0024812] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 08/22/2011] [Indexed: 01/04/2023] Open
Abstract
Reversible post-translational protein modifications such as SUMOylation add complexity to cardiac transcriptional regulation. The homeodomain transcription factor Nkx2-5/Csx is essential for heart specification and morphogenesis. It has been previously suggested that SUMOylation of lysine 51 (K51) of Nkx2-5 is essential for its DNA binding and transcriptional activation. Here, we confirm that SUMOylation strongly enhances Nkx2-5 transcriptional activity and that residue K51 of Nkx2-5 is a SUMOylation target. However, in a range of cultured cell lines we find that a point mutation of K51 to arginine (K51R) does not affect Nkx2-5 activity or DNA binding, suggesting the existence of additional Nkx2-5 SUMOylated residues. Using biochemical assays, we demonstrate that Nkx2-5 is SUMOylated on at least one additional site, and this is the predominant site in cardiac cells. The second site is either non-canonical or a "shifting" site, as mutation of predicted consensus sites and indeed every individual lysine in the context of the K51R mutation failed to impair Nkx2-5 transcriptional synergism with SUMO, or its nuclear localization and DNA binding. We also observe SUMOylation of Nkx2-5 cofactors, which may be critical to Nkx2-5 regulation. Our data reveal highly complex regulatory mechanisms driven by SUMOylation to modulate Nkx2-5 activity.
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Affiliation(s)
- Mauro W Costa
- Developmental and Stem Cell Biology Division, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
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16
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Chandrasekaran S, Peterson RE, Mani SK, Addy B, Buchholz AL, Xu L, Thiyagarajan T, Kasiganesan H, Kern CB, Menick DR. Histone deacetylases facilitate sodium/calcium exchanger up-regulation in adult cardiomyocytes. FASEB J 2009; 23:3851-64. [PMID: 19638401 DOI: 10.1096/fj.09-132415] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
It is becoming increasingly evident that histone deacetylases (HDACs) have a prominent role in the alteration of gene expression during the growth remodeling process of cardiac hypertrophy. HDACs are generally viewed as corepressors of gene expression. However, we demonstrate that class I and class II HDACs play an important role in the basal expression and up-regulation of the sodium calcium exchanger (Ncx1) gene in adult cardiomyocytes. Treatment with the HDAC inhibitor trichostatin A (TSA) prevented the pressure-overload-stimulated up-regulation of Ncx1 expression. Overexpression of HDAC5 resulted in the dose-dependent up-regulation of basal and alpha-adrenergic stimulated Ncx1 expression. We show that Nkx2.5 recruits HDAC5 to the Ncx1 promoter, where HDAC5 complexes with HDAC1. Nkx2.5 also interacts with transcriptional activator p300, which is recruited to the Ncx1 promoter. We demonstrate that when Nkx2.5 is acetylated, it is found associated with HDAC5, whereas deacetylated Nkx2.5 is in complex with p300. Notably, TSA treatment prevents p300 from being recruited to the endogenous Ncx1 promoter, resulting in the repression of Ncx1 expression. We propose a novel model for Ncx1 regulation in which deacetylation of Nkx2.5 is required for the recruitment of p300 and results in up-regulation of exchanger expression.
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Affiliation(s)
- Sangeetha Chandrasekaran
- Gazes Cardiac Research Institute, Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina 29425, USA
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17
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Tan HL, van der Wal AC, Campian ME, Kruyswijk HH, ten Hove Jansen B, van Doorn DJ, Oskam HJ, Becker AE, Wilde AA. Nodoventricular Accessory Pathways in
PRKAG2
-Dependent Familial Preexcitation Syndrome Reveal a Disorder in Cardiac Development. Circ Arrhythm Electrophysiol 2008; 1:276-81. [DOI: 10.1161/circep.108.782862] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Familial preexcitation syndrome is linked to mutations in
PRKAG2
. Previous studies on the R302Q mutation have provided evidence for a remarkably high proportion of otherwise rare accessory pathways with atrioventricular (AV) node-like conduction properties (Mahaim fibers). Yet, histopathologic proof is still lacking. We aimed to provide such proof.
Methods and Results—
We retrospectively studied the medical records of 17 members of a 5-generation family. Five subjects died prematurely. The R302Q mutation was found in 8 living subjects and 2 deceased subjects (obligate carriers). Cardiac hypertrophy was found in 7 mutation carriers. ECGs compatible with preexcitation were found in 13 subjects and AV block at varying degrees in 5 subjects. All mutation carriers had electrocardiographic evidence of preexcitation, AV block, or both. Three individuals had high-grade AV block with preexcited conducted beats. Electrophysiological studies in 3 individuals revealed bypasses with AV node–like properties. Histopathologic studies of 1 suddenly deceased mutation carrier revealed concentric hypertrophy of the left ventricle with extensive myocardial disarray associated with slight interstitial fibrosis but no lysosomal-bound glycogen. Moreover, there were 3 small nodoventricular tracts (Mahaim fibers) passing through the central fibrous body and connecting the AV node with the working myocardium of the interventricular septum.
Conclusions—
Preexcitation associated with the R302Q mutation in
PRKAG2
is associated with Mahaim fibers. These findings support the novel insight that
PRKAG2
may be involved in the development of the cardiac conduction system.
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Affiliation(s)
- Hanno L. Tan
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Allard C. van der Wal
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Maria E. Campian
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Hittjo H. Kruyswijk
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Bram ten Hove Jansen
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Dirk-Jan van Doorn
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Henk J. Oskam
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Anton E. Becker
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
| | - Arthur A.M. Wilde
- From the Heart Failure Research Center (H.L.T., M.E.C., A.A.M.W.) and Departments of Cardiology (H.L.T., A.A.M.W.) and Pathology (A.C.v.d.W., A.E.B.), Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Department of Cardiology, Spaarne Hospital, Hoofddorp, The Netherlands (H.H.K., B.t.H.J., D.-J.v.D.); and Department of Cardiology, Groene Hart Hospital, Gouda, The Netherlands (H.J.O.)
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18
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Kundu P, Ciobotaru A, Foroughi S, Toro L, Stefani E, Eghbali M. Hormonal regulation of cardiac KCNE2 gene expression. Mol Cell Endocrinol 2008; 292:50-62. [PMID: 18611433 PMCID: PMC2893227 DOI: 10.1016/j.mce.2008.06.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2008] [Revised: 05/29/2008] [Accepted: 06/10/2008] [Indexed: 12/11/2022]
Abstract
The KCNE2 gene encodes a single transmembrane domain protein that modulates a variety of K+ channel functions in various tissues. Here we show that cardiac KCNE2 transcript levels are approximately 10-fold upregulated at the end of pregnancy. This upregulation was mimicked by 17-beta estradiol but not by 5alpha-dihydrotestosterone treatments in ovariectomized mice. To investigate the mechanism of KCNE2 transcriptional regulation by estrogen, we experimentally identified KCNE2 transcription start sites, delineated its gene structure and characterized its promoter region. Estrogen treatment stimulated KCNE2 promoter activity in a dose-dependent manner and ICI 182,780 blocked estrogen stimulation. A direct genomic mechanism was demonstrated by (i) the loss of estrogen responsiveness in the presence of a DNA-binding domain mutant estrogen receptor alpha or mutant KCNE2 ERE and (ii) binding of ERalpha to the KCNE2 ERE. These findings show that a genomic mechanism of estrogen action alters KCNE2 expression, which may have important physiological implications.
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Affiliation(s)
- Pallob Kundu
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
| | - Andrea Ciobotaru
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
| | - Sina Foroughi
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
| | - Ligia Toro
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
- Department of Molecular & Medical Pharmacology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
- Brain Research Institute, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
| | - Enrico Stefani
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
- Department of Physiology, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
- Brain Research Institute, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
| | - Mansoureh Eghbali
- Department of Anesthesiology, Division of Molecular Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095-1778
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19
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Liu Z, Li T, Liu Y, Jia Z, Li Y, Zhang C, Chen P, Ma K, Affara N, Zhou C. WNT signaling promotes Nkx2.5 expression and early cardiomyogenesis via downregulation of Hdac1. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2008; 1793:300-11. [PMID: 18851995 DOI: 10.1016/j.bbamcr.2008.08.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 08/17/2008] [Accepted: 08/28/2008] [Indexed: 02/06/2023]
Abstract
The cardiac transcription factor NKX2.5 plays a crucial role in cardiomyogenesis, but its mechanism of regulation is still unclear. Recently, epigenetic regulation has become increasingly recognized as important in differentiation and development. In this study, we used P19CL6 cells to investigate the regulation of Nkx2.5 expression by methylation and acetylation during cardiomyocyte differentiation. During the early stage of differentiation, Nkx2.5 expression was upregulated, but the methylation status of the Nkx2.5 promoter did not undergo significant change; while the acetylation levels of histones H3 and H4 were increased, accompanied by a significant reduction in Hdac1 expression. Suppression of Hdac1 activity stimulated cardiac differentiation accompanied by increased expression of cardiac-specific genes and cell cycle arrest. Overexpression of Hdac1 inhibited cardiomyocyte formation and downregulated the expressions of Gata4 and Nkx2.5. Mimicking induction of the WNT pathway inhibited Hdac1 expression with upregulated Nkx2.5 expression. WNT3a and WNT3 downregulated the expression of Hdac1, contrary to the effect of SFRP2 and GSK3beta. Cotransfection of beta-catenin and Lef1 significantly downregulated the expression of Hdac1. Our data suggest that WNT signaling pathway plays important roles in the regulation of Hdac1 during the early stage of cardiomyocyte differentiation and that the downregulation of Hdac1 promotes cardiac differentiation.
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Affiliation(s)
- Zhiqiang Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University, 38 Xue Yuan Road, Hai Dian District, Beijing, 100191, China
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