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She P, Gao B, Li D, Wu C, Zhu X, He Y, Mo F, Qi Y, Jin D, Chen Y, Zhao X, Lin J, Hu H, Li J, Zhang B, Xie P, Lin C, Christoffels VM, Wu Y, Zhu P, Zhong TP. The transcriptional repressor HEY2 regulates mitochondrial oxidative respiration to maintain cardiac homeostasis. Nat Commun 2025; 16:232. [PMID: 39747914 PMCID: PMC11696871 DOI: 10.1038/s41467-024-55557-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/17/2024] [Indexed: 01/04/2025] Open
Abstract
Energy deprivation and metabolic rewiring of cardiomyocytes are widely recognized hallmarks of heart failure. Here, we report that HEY2 (a Hairy/Enhancer-of-split-related transcriptional repressor) is upregulated in hearts of patients with dilated cardiomyopathy. Induced Hey2 expression in zebrafish hearts or mammalian cardiomyocytes impairs mitochondrial respiration, accompanied by elevated ROS, resulting in cardiomyocyte apoptosis and heart failure. Conversely, Hey2 depletion in adult mouse hearts and zebrafish enhances the expression of mitochondrial oxidation genes and cardiac function. Multifaceted genome-wide analyses reveal that HEY2 enriches at the promoters of genes known to regulate metabolism (including Ppargc1, Esrra and Cpt1) and colocalizes with HDAC1 to effectuate histone deacetylation and transcriptional repression. Consequently, restoration of PPARGC1A/ESRRA in Hey2- overexpressing zebrafish hearts or human cardiomyocyte-like cells rescues deficits in mitochondrial bioenergetics. Knockdown of Hey2 in adult mouse hearts protects against doxorubicin-induced cardiac dysfunction. These studies reveal an evolutionarily conserved HEY2/HDAC1-Ppargc1/Cpt transcriptional module that controls energy metabolism to preserve cardiac function.
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Affiliation(s)
- Peilu She
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510100, China
| | - Bangjun Gao
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Dongliang Li
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Chen Wu
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Xuejiao Zhu
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yuan He
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Fei Mo
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yao Qi
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Daqing Jin
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yewei Chen
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xin Zhao
- School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Jinzhong Lin
- School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Hairong Hu
- School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Jia Li
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Bing Zhang
- Shanghai Center for Systems Biomedicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Peng Xie
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Chengqi Lin
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Vincent M Christoffels
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, 1105AZ, The Netherlands
| | - Yueheng Wu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510100, China.
| | - Ping Zhu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, Guangdong, 510100, China.
| | - Tao P Zhong
- Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
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Azhdari M, Zur Hausen A. Wnt/β-catenin and notch signaling pathways in cardiovascular disease: Mechanisms and therapeutics approaches. Pharmacol Res 2025; 211:107565. [PMID: 39725339 DOI: 10.1016/j.phrs.2024.107565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2024] [Revised: 11/30/2024] [Accepted: 12/23/2024] [Indexed: 12/28/2024]
Abstract
Wnt and Notch signaling pathways play crucial roles in the development and homeostasis of the cardiovascular system. These pathways regulate important cellular processes in cardiomyocytes, endothelial cells, and smooth muscle cells, which are the key cell types involved in the structure and function of the heart and vasculature. During embryonic development, Wnt and Notch signaling coordinate cell fate specification, proliferation, differentiation, and morphogenesis of the heart and blood vessels. In the adult cardiovascular system, these pathways continue to maintain tissue homeostasis and arrange adaptive responses to various physiological and pathological stimuli. Dysregulation of Wnt and Notch signaling has been involved in the pathogenesis of numerous cardiovascular diseases, including atherosclerosis, hypertension, myocardial infarction, and heart failure. Abnormal activation or suppression of these pathways in specific cell types can contribute to endothelial dysfunction, vascular remodeling, cardiomyocyte hypertrophy, impaired cardiac contractility and dead. Understanding the complex interplay between Wnt and Notch signaling in the cardiovascular system has led to the investigation of these pathways as potential therapeutic targets in clinical trials. In conclusion, this review summarizes the current knowledge on the roles of Wnt and Notch signaling in the development and homeostasis of cardiomyocytes, endothelial cells, and smooth muscle cells. It further discusses the dysregulation of these pathways in the context of major cardiovascular diseases and the ongoing clinical investigations targeting Wnt and Notch signaling for therapeutic intervention.
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Affiliation(s)
- Manizheh Azhdari
- Pathologie, School for Cardiovascular Diseases, Fac. Health, Medicine and Life Sciences, Maastricht university, MUMC, the Netherland.
| | - Axel Zur Hausen
- Pathologie, School for Cardiovascular Diseases, Fac. Health, Medicine and Life Sciences, Maastricht university, MUMC, the Netherland.
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Zhang D, Cheng C, Yang M, Zhang X, Yu X, Wang M. MicroRNA-181b-5p/HEY2 axis is involved in the progress of deep venous thrombosis via mediating vascular endothelial injury. Hematology 2024; 29:2423438. [PMID: 39495146 DOI: 10.1080/16078454.2024.2423438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 10/25/2024] [Indexed: 11/05/2024] Open
Abstract
OBJECTIVES Deep-venous thrombosis (DVT) refers to abnormal blood clotting in the deep vein cavity, and post-thrombotic syndrome (PTS) is the most frequent complication. The study explored the impact of microRNA 181b-5p on DVT progression based on human umbilical vein endothelial cells (HUVECs). METHODS Levels of miR-181b-5p were examined in 150 cases with acute lower extremity DVT. ROC curve and K-M plot were drawn for clinical value assessment. The role of miR-181b-5p in HUVECs viability, migration, apoptosis, inflammatory response and adhesion factors' release was investigated. Target gene of miR-181b-5p was predicted, and its role in cell function was explored. RESULTS Low-expressed miR-181b-5p showed favorable diagnostic performance in differentiating DVT with the AUC of 0.948. Patients with low miR-181b-5p had a high incidence of PTS. miR-181b-5p overexpression promoted HUVECs' viability and migration, while inhibiting cell apoptosis and release of inflammatory and adhesion cytokines. As the target gene of miR-181b-5p, HEY2 overexpression reversed the role of miR-181b-5p in HUVECs. CONCLUSION MiR-181b-5p serves as a potential biomarker for DVT diagnosis and PTS development. Overexpression of this miRNA targeted HEY2 to alleviate endothelial cell damage.
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Affiliation(s)
- Dawei Zhang
- Department of Orthopedics, Zibo Central Hospital, Zibo, People's Republic of China
| | - Cheng Cheng
- Department of Cardiovascular Medicine, Zibo Central Hospital, Zibo, People's Republic of China
| | - Meiying Yang
- Department of Orthopedics, Zibo Central Hospital, Zibo, People's Republic of China
| | - Xiuyin Zhang
- Department of Burn Plastic Surgery, Zibo Central Hospital, Zibo, People's Republic of China
| | - Xinming Yu
- Department of Vascular Surgery, Zibo Central Hospital, Zibo, People's Republic of China
| | - Min Wang
- Department of Vascular Surgery, Zibo Central Hospital, Zibo, People's Republic of China
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Miao L, Lu Y, Nusrat A, Zhao L, Castillo M, Xiao Y, Guo H, Liu Y, Gunaratne P, Schwartz RJ, Burns AR, Kumar A, DiPersio CM, Wu M. β1 integrins regulate cellular behaviour and cardiomyocyte organization during ventricular wall formation. Cardiovasc Res 2024; 120:1279-1294. [PMID: 38794925 PMCID: PMC11416060 DOI: 10.1093/cvr/cvae111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/30/2024] [Accepted: 03/17/2024] [Indexed: 05/26/2024] Open
Abstract
AIMS The mechanisms regulating the cellular behaviour and cardiomyocyte organization during ventricular wall morphogenesis are poorly understood. Cardiomyocytes are surrounded by extracellular matrix (ECM) and interact with ECM via integrins. This study aims to determine whether and how β1 integrins regulate cardiomyocyte behaviour and organization during ventricular wall morphogenesis in the mouse. METHODS AND RESULTS We applied mRNA deep sequencing and immunostaining to determine the expression repertoires of α/β integrins and their ligands in the embryonic heart. Integrin β1 subunit (β1) and some of its ECM ligands are asymmetrically distributed and enriched in the luminal side of cardiomyocytes, and fibronectin surrounds cardiomyocytes, creating a network for them. Itgb1, which encodes the β1, was deleted via Nkx2.5Cre/+ to generate myocardial-specific Itgb1 knockout (B1KO) mice. B1KO hearts display an absence of a trabecular zone but a thicker compact zone. The levels of hyaluronic acid and versican, essential for trabecular initiation, were not significantly different between control and B1KO. Instead, fibronectin, a ligand of β1, was absent in the myocardium of B1KO hearts. Furthermore, B1KO cardiomyocytes display a random cellular orientation and fail to undergo perpendicular cell division, be organized properly, and establish the proper tissue architecture to form trabeculae. Mosaic clonal lineage tracing showed that Itgb1 regulates cardiomyocyte transmural migration and proliferation autonomously. CONCLUSION β1 is asymmetrically localized in the cardiomyocytes, and some of its ECM ligands are enriched along the luminal side of the myocardium, and fibronectin surrounds cardiomyocytes. β1 integrins are required for cardiomyocytes to attach to the ECM network. This engagement provides structural support for cardiomyocytes to maintain shape, undergo perpendicular division, and establish cellular organization. Deletion of Itgb1 leads to loss of β1 and fibronectin and prevents cardiomyocytes from engaging the ECM network, resulting in failure to establish tissue architecture to form trabeculae.
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Affiliation(s)
- Lianjie Miao
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Yangyang Lu
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Anika Nusrat
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Luqi Zhao
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Micah Castillo
- Department of Biology and Biochemistry, University of Houston Sequencing and Gene Editing Core, University of Houston, Houston, TX 77204-5001, USA
| | - Yongqi Xiao
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Hongyang Guo
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Yu Liu
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | - Preethi Gunaratne
- Department of Biology and Biochemistry, University of Houston Sequencing and Gene Editing Core, University of Houston, Houston, TX 77204-5001, USA
| | - Robert J Schwartz
- Department of Biology and Biochemistry, University of Houston Sequencing and Gene Editing Core, University of Houston, Houston, TX 77204-5001, USA
| | - Alan R Burns
- College of Optometry, University of Houston, Houston, TX 77204-2020, USA
| | - Ashok Kumar
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
| | | | - Mingfu Wu
- Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204-5039, USA
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van der Maarel LE, Christoffels VM. Development of the Cardiac Conduction System. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:185-200. [PMID: 38884712 DOI: 10.1007/978-3-031-44087-8_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
The electrical impulses that coordinate the sequential, rhythmic contractions of the atria and ventricles are initiated and tightly regulated by the specialized tissues of the cardiac conduction system. In the mature heart, these impulses are generated by the pacemaker cardiomyocytes of the sinoatrial node, propagated through the atria to the atrioventricular node where they are delayed and then rapidly propagated to the atrioventricular bundle, right and left bundle branches, and finally, the peripheral ventricular conduction system. Each of these specialized components arise by complex patterning events during embryonic development. This chapter addresses the origins and transcriptional networks and signaling pathways that drive the development and maintain the function of the cardiac conduction system.
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Affiliation(s)
- Lieve E van der Maarel
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Vincent M Christoffels
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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Datta S, Cao W, Skillman M, Wu M. Hypoplastic Left Heart Syndrome: Signaling & Molecular Perspectives, and the Road Ahead. Int J Mol Sci 2023; 24:15249. [PMID: 37894928 PMCID: PMC10607600 DOI: 10.3390/ijms242015249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/07/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
Hypoplastic left heart syndrome (HLHS) is a lethal congenital heart disease (CHD) affecting 8-25 per 100,000 neonates globally. Clinical interventions, primarily surgical, have improved the life expectancy of the affected subjects substantially over the years. However, the etiological basis of HLHS remains fundamentally unclear to this day. Based upon the existing paradigm of studies, HLHS exhibits a multifactorial mode of etiology mediated by a complicated course of genetic and signaling cascade. This review presents a detailed outline of the HLHS phenotype, the prenatal and postnatal risks, and the signaling and molecular mechanisms driving HLHS pathogenesis. The review discusses the potential limitations and future perspectives of studies that can be undertaken to address the existing scientific gap. Mechanistic studies to explain HLHS etiology will potentially elucidate novel druggable targets and empower the development of therapeutic regimens against HLHS in the future.
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Affiliation(s)
| | | | | | - Mingfu Wu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX 77204, USA; (S.D.); (W.C.); (M.S.)
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Miao L, Castillo M, Lu Y, Xiao Y, Liu Y, Burns AR, Kumar A, Gunaratne P, Michael DiPersio C, Wu M. β1 integrins regulate cellular behaviors and cardiomyocyte organization during ventricular wall formation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.28.555112. [PMID: 37693495 PMCID: PMC10491119 DOI: 10.1101/2023.08.28.555112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Aims The mechanisms regulating the cellular behavior and cardiomyocyte organization during ventricular wall morphogenesis are poorly understood. Cardiomyocytes are surrounded by extracellular matrix (ECM) and interact with ECM via integrins. This study aims to determine whether and how β1 integrins regulate cardiomyocyte behavior and organization during ventricular wall morphogenesis in the mouse. Methods and Results We applied mRNA deep sequencing and immunostaining to determine the expression repertoires of α/β integrins and their ligands in the embryonic heart. Integrin β1 subunit (β1) and some of its ECM ligands are asymmetrically distributed and enriched in the luminal side of cardiomyocytes, while fibronectin surrounds cardiomyocytes, creating a network for them. Itgb1 , which encodes the β1 integrin subunit, was deleted via Nkx2.5 Cre/+ to generate myocardial-specific Itgb1 knockout (B1KO) mice. B1KO hearts display an absence of trabecular zone but a thicker compact zone. The abundances of hyaluronic acid and versican are not significantly different. Instead, fibronectin, a ligand of β1, was absent in B1KO. We examined cellular behaviors and organization via various tools. B1KO cardiomyocytes display a random cellular orientation and fail to undergo perpendicular cell division, be organized properly, and establish the proper tissue architecture to form trabeculae. The reduction of Notch1 activation was not the cause of the abnormal cellular organization in B1KO hearts. Mosaic clonal lineage tracing shows that Itgb1 regulates cardiomyocyte transmural migration and proliferation autonomously. Conclusions β1 is asymmetrically localized in the cardiomyocytes, and its ECM ligands are enriched in the luminal side of the myocardium and surrounding cardiomyocytes. β1 integrins are required for cardiomyocytes to attach to the ECM network. This engagement provides structural support for cardiomyocytes to maintain shape, undergo perpendicular division, and establish cellular organization. Deletion of Itgb1 , leading to ablation of β1 integrins, causes the dissociation of cardiomyocytes from the ECM network and failure to establish tissue architecture to form trabeculae.
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8
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Lu YW, Liang Z, Guo H, Fernandes T, Espinoza-Lewis RA, Wang T, Li K, Li X, Singh GB, Wang Y, Cowan D, Mably JD, Philpott CC, Chen H, Wang DZ. PCBP1 regulates alternative splicing of AARS2 in congenital cardiomyopathy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.18.540420. [PMID: 37293078 PMCID: PMC10245752 DOI: 10.1101/2023.05.18.540420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Alanyl-transfer RNA synthetase 2 (AARS2) is a nuclear encoded mitochondrial tRNA synthetase that is responsible for charging of tRNA-Ala with alanine during mitochondrial translation. Homozygous or compound heterozygous mutations in the Aars2 gene, including those affecting its splicing, are linked to infantile cardiomyopathy in humans. However, how Aars2 regulates heart development, and the underlying molecular mechanism of heart disease remains unknown. Here, we found that poly(rC) binding protein 1 (PCBP1) interacts with the Aars2 transcript to mediate its alternative splicing and is critical for the expression and function of Aars2. Cardiomyocyte-specific deletion of Pcbp1 in mice resulted in defects in heart development that are reminiscent of human congenital cardiac defects, including noncompaction cardiomyopathy and a disruption of the cardiomyocyte maturation trajectory. Loss of Pcbp1 led to an aberrant alternative splicing and a premature termination of Aars2 in cardiomyocytes. Additionally, Aars2 mutant mice with exon-16 skipping recapitulated heart developmental defects observed in Pcbp1 mutant mice. Mechanistically, we found dysregulated gene and protein expression of the oxidative phosphorylation pathway in both Pcbp1 and Aars2 mutant hearts; these date provide further evidence that the infantile hypertrophic cardiomyopathy associated with the disorder oxidative phosphorylation defect type 8 (COXPD8) is mediated by Aars2. Our study therefore identifies Pcbp1 and Aars2 as critical regulators of heart development and provides important molecular insights into the role of disruptions in metabolism on congenital heart defects.
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Fetisov TI, Borunova AA, Antipova AS, Antoshina EE, Trukhanova LS, Gorkova TG, Zuevskaya SN, Maslov A, Gurova K, Gudkov A, Lesovaya EA, Belitsky GA, Yakubovskaya MG, Kirsanov KI. Targeting Features of Curaxin CBL0137 on Hematological Malignancies In Vitro and In Vivo. Biomedicines 2023; 11:biomedicines11010230. [PMID: 36672738 PMCID: PMC9856019 DOI: 10.3390/biomedicines11010230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/31/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
The anticancer activity of Curaxin CBL0137, a DNA-binding small molecule with chromatin remodulating effect, has been demonstrated in different cancers. Herein, a comparative evaluation of CBL0137 activity was performed in respect to acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL), chronic myeloid leukemia and multiple myeloma (MM) cultured in vitro. MTT assay showed AML and MM higher sensitivity to CBL0137's cytostatic effect comparatively to other hematological malignancy cells. Flow cytometry cell cycle analysis revealed an increase in subG1 and G2/M populations after CBL0137 cell treatment, but the prevalent type of arrest varied. Apoptosis activation by CBL0137 measured by Annexin-V/PI dual staining was more active in AML and MM cells. RT2 PCR array showed that changes caused by CBL0137 in signaling pathways involved in cancer pathogenesis were more intensive in AML and MM cells. On the murine model of AML WEHI-3, CBL0137 showed significant anticancer effects in vivo, which were evaluated by corresponding changes in spleen and liver. Thus, more pronounced anticancer effects of CBL0137 in vitro were observed in respect to AML and MM. Experiments in vivo also indicated the perspective of CBL0137 use for AML treatment. This in accordance with the frontline treatment approach in AML using epigenetic drugs.
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Affiliation(s)
- Timur I. Fetisov
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | - Anna A. Borunova
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | - Alina S. Antipova
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | - Elena E. Antoshina
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | - Lubov S. Trukhanova
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | - Tatyana G. Gorkova
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | | | - Alexei Maslov
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Katerina Gurova
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Andrei Gudkov
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Ekaterina A. Lesovaya
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
- Department of Oncology, I.P. Pavlov Ryazan State Medical University, 390026 Ryazan, Russia
| | - Gennady A. Belitsky
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
| | | | - Kirill I. Kirsanov
- N.N. Blokhin National Medical Research Center of Oncology, 115478 Moscow, Russia
- Correspondence:
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Left Ventricular Noncompaction Is Associated with Valvular Regurgitation and a Variety of Arrhythmias. J Cardiovasc Dev Dis 2022; 9:jcdd9020049. [PMID: 35200702 PMCID: PMC8876824 DOI: 10.3390/jcdd9020049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 01/29/2022] [Indexed: 02/05/2023] Open
Abstract
Left ventricular noncompaction (LVNC) is a type of cardiomyopathy characterized anatomically by prominent ventricular trabeculation and deep intertrabecular recesses. The mortality associated with LVNC ranges from 5% to 47%. The etiology of LVNC is yet to be fully understood, although decades have passed since its recognition as a clinical entity globally. Furthermore, critical questions, i.e., whether LVNC represents an acquired pathology or has a congenital origin and whether the reduced contractile function in LVNC patients is a cause or consequence of noncompaction, remain to be addressed. In this study, to answer some of these questions, we analyzed the clinical features of LVNC patients. Out of 9582 subjects screened for abnormal cardiac functions, 45 exhibit the characteristics of LVNC, and 1 presents right ventricular noncompaction (RVNC). We found that 40 patients show valvular regurgitation, 39 manifest reduced systolic contractions, and 46 out of the 46 present different forms of arrhythmias that are not restricted to be caused by the noncompact myocardium. This retrospective examination of LVNC patients reveals some novel findings: LVNC is associated with regurgitation in most patients and arrhythmias in all patients. The thickness ratio of the trabecular layer to compact layer negatively correlates with fractional shortening, and reduced contractility might result from LVNC. This study adds evidence to support a congenital origin of LVNC that might benefit the diagnosis and subsequent characterization of LVNC patients.
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The Spatiotemporal Expression of Notch1 and Numb and Their Functional Interaction during Cardiac Morphogenesis. Cells 2021; 10:cells10092192. [PMID: 34571841 PMCID: PMC8471136 DOI: 10.3390/cells10092192] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/18/2021] [Accepted: 08/21/2021] [Indexed: 12/13/2022] Open
Abstract
Numb family proteins (NFPs), including Numb and Numblike (Numbl), are commonly known for their role as cell fate determinants for multiple types of progenitor cells, mainly due to their function as Notch inhibitors. Previous studies have shown that myocardial NFP double knockout (MDKO) hearts display an up-regulated Notch activation and various defects in cardiac progenitor cell differentiation and cardiac morphogenesis. Whether enhanced Notch activation causes these defects in MDKO is not fully clear. To answer the question, we examined the spatiotemporal patterns of Notch1 expression, Notch activation, and Numb expression in the murine embryonic hearts using multiple approaches including RNAScope, and Numb and Notch reporter mouse lines. To further interrogate the interaction between NFPs and Notch signaling activation, we deleted both Notch1 or RBPJk alleles in the MDKO. We examined and compared the phenotypes of Notch1 knockout, NFPs double knockout, Notch1; Numb; Numbl and RBPJk; Numb; Numbl triple knockouts. Our study showed that Notch1 is expressed and activated in the myocardium at several stages, and Numb is enriched in the epicardium and did not show the asymmetric distribution in the myocardium. Cardiac-specific Notch1 deletion causes multiple structural defects and embryonic lethality. Notch1 or RBPJk deletion in MDKO did not rescue the structural defects in the MDKO but partially rescued the defects of cardiac progenitor cell differentiation, cardiomyocyte proliferation, and trabecular morphogenesis. Our study concludes that NFPs regulate progenitor cell differentiation, cardiomyocyte proliferation, and trabecular morphogenesis partially through Notch1 and play more roles than inhibiting Notch1 signaling during cardiac morphogenesis.
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Giri P, Mukhopadhyay A, Gupta M, Mohapatra B. Dilated cardiomyopathy: a new insight into the rare but common cause of heart failure. Heart Fail Rev 2021; 27:431-454. [PMID: 34245424 DOI: 10.1007/s10741-021-10125-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/25/2021] [Indexed: 12/26/2022]
Abstract
Heart failure is a global health burden responsible for high morbidity and mortality with a prevalence of greater than 60 million individuals worldwide. One of the major causes of heart failure is dilated cardiomyopathy (DCM), characterized by associated systolic dysfunction. During the last few decades, there have been remarkable advances in our understanding about the genetics of dilated cardiomyopathy. The genetic causes were initially thought to be associated with mutations in genes encoding proteins that are localized to cytoskeleton and sarcomere only; however, with the advancement in mechanistic understanding, the roles of ion channels, Z-disc, mitochondria, nuclear proteins, cardiac transcription factors (e.g., NKX-2.5, TBX20, GATA4), and the factors involved in calcium homeostasis have also been identified and found to be implicated in both familial and sporadic DCM cases. During past few years, next-generation sequencing (NGS) has been established as a diagnostic tool for genetic analysis and it has added significantly to the existing candidate gene list for DCM. The animal models have also provided novel insights to develop a better treatment strategy based on phenotype-genotype correlation, epigenetic and phenomic profiling. Most of the DCM biomarkers that are used in routine genetic and clinical testing are structural proteins, but during the last few years, the role of mi-RNA has also emerged as a biomarker due to their accessibility through noninvasive methods. Our increasing genetic knowledge can improve the clinical management of DCM by bringing clinicians and geneticists on one platform, thereby influencing the individualized clinical decision making and leading to precision medicine.
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Affiliation(s)
- Prerna Giri
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi-5, India
| | - Amrita Mukhopadhyay
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi-5, India
| | - Mohini Gupta
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi-5, India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi-5, India.
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13
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Bharadwaz A, Jayasuriya AC. Osteogenic differentiation cues of the bone morphogenetic protein-9 (BMP-9) and its recent advances in bone tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111748. [PMID: 33545890 PMCID: PMC7867678 DOI: 10.1016/j.msec.2020.111748] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/14/2020] [Accepted: 11/21/2020] [Indexed: 02/07/2023]
Abstract
Bone regeneration using bioactive molecules and biocompatible materials is growing steadily with the advent of the new findings in cellular signaling. Bone Morphogenetic Protein (BMP)-9 is a considerably recent discovery from the BMP family that delivers numerous benefits in osteogenesis. The Smad cellular signaling pathway triggered by BMPs is often inhibited by Noggin. However, BMP-9 is resistant to Noggin, thus, facilitating a more robust cellular differentiation of osteoprogenitor cells into preosteoblasts and osteoblasts. This review encompasses a general understanding of the Smad signaling pathway activated by the BMP-9 ligand molecule with its specific receptors. The robust osteogenic cellular differentiation cue provided by BMP-9 has been reviewed from a bone regeneration perspective with several in vitro as well as in vivo studies reporting promising results for future research. The effect of the biomaterial, chosen in such studies as the scaffold or carrier matrix, on the activity of BMP-9 and subsequent bone regeneration has been highlighted in this review. The non-viral delivery technique for BMP-9 induced bone regeneration is a safer alternative to its viral counterpart. The recent advances in non-viral BMP-9 delivery have also highlighted the efficacy of the protein molecule at a low dosage. This opens a new horizon as a more efficient and safer alternative to BMP-2, which was prevalent among clinical trials; however, BMP-2 applications have reported its downsides during bone defect healing such as cystic bone formation.
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Affiliation(s)
- Angshuman Bharadwaz
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH, USA
| | - Ambalangodage C Jayasuriya
- Biomedical Engineering Program, Department of Bioengineering, College of Engineering, The University of Toledo, Toledo, OH, USA; Department of Orthopaedic Surgery, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH, USA.
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14
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Zohorsky K, Mequanint K. Designing Biomaterials to Modulate Notch Signaling in Tissue Engineering and Regenerative Medicine. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:383-410. [PMID: 33040694 DOI: 10.1089/ten.teb.2020.0182] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The design of cell-instructive biomaterials for tissue engineering and regenerative medicine is at a crossroads. Although the conventional tissue engineering approach is top-down (cells seeded to macroporous scaffolds and mature to form tissues), bottom-up tissue engineering strategies are becoming appealing. With such developments, we can study cell signaling events, thus enabling functional tissue assembly in physiologic and diseased models. Among many important signaling pathways, the Notch signaling pathway is the most diverse in its influence during tissue morphogenesis and repair following injury. Although Notch signaling is extensively studied in developmental biology and cancer biology, our knowledge of designing biomaterial-based Notch signaling platforms and incorporating Notch signaling components into engineered tissue systems is limited. By incorporating Notch signaling to tissue engineering scaffolds, we can direct cell-specific responses and improve engineered tissue maturation. This review will discuss recent progress in the development of Notch signaling biomaterials as a promising target to control cellular fate decisions, including the influences of ligand identity, biophysical material cues, ligand presentation strategies, and mechanotransduction. Notch signaling is consequently of interest to direct, control, and reprogram cellular behavior on a biomaterial surface. We anticipate that discussions in this article will allow for enhanced knowledge and insight into designing Notch targeted biomaterials for various tissue engineering and cell fate determinations. Impact statement Notch signaling is recognized as an important pathway in tissue engineering and regenerative medicine; however, there is no systematic review on this topic. The comprehensive review and perspectives presented here provide an in-depth discussion on ligand presentation strategies both in 2D and in 3D cell culture environments involving biomaterials/scaffolds. In addition, this review article provides insight into the challenges in designing cell surrogate biomaterials capable of providing Notch signals. To the best of the authors' knowledge, this is the first review relevant to the fields of tissue engineering.
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Affiliation(s)
- Kathleen Zohorsky
- School of Biomedical Engineering and The University of Western Ontario, London, Canada
| | - Kibret Mequanint
- School of Biomedical Engineering and The University of Western Ontario, London, Canada.,Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Canada
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15
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She P, Zhang H, Peng X, Sun J, Gao B, Zhou Y, Zhu X, Hu X, Lai KS, Wong J, Zhou B, Wang L, Zhong TP. The Gridlock transcriptional repressor impedes vertebrate heart regeneration by restricting expression of lysine methyltransferase. Development 2020; 147:147/18/dev190678. [PMID: 32988975 PMCID: PMC7541343 DOI: 10.1242/dev.190678] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 08/03/2020] [Indexed: 12/19/2022]
Abstract
Teleost zebrafish and neonatal mammalian hearts exhibit the remarkable capacity to regenerate through dedifferentiation and proliferation of pre-existing cardiomyocytes (CMs). Although many mitogenic signals that stimulate zebrafish heart regeneration have been identified, transcriptional programs that restrain injury-induced CM renewal are incompletely understood. Here, we report that mutations in gridlock (grl; also known as hey2), encoding a Hairy-related basic helix-loop-helix transcriptional repressor, enhance CM proliferation and reduce fibrosis following damage. In contrast, myocardial grl induction blunts CM dedifferentiation and regenerative responses to heart injury. RNA sequencing analyses uncover Smyd2 lysine methyltransferase (KMT) as a key transcriptional target repressed by Grl. Reduction in Grl protein levels triggered by injury induces smyd2 expression at the wound myocardium, enhancing CM proliferation. We show that Smyd2 functions as a methyltransferase and modulates the Stat3 methylation and phosphorylation activity. Inhibition of the KMT activity of Smyd2 reduces phosphorylated Stat3 at cardiac wounds, suppressing the elevated CM proliferation in injured grl mutant hearts. Our findings establish an injury-specific transcriptional repression program in governing CM renewal during heart regeneration, providing a potential strategy whereby silencing Grl repression at local regions might empower regeneration capacity to the injured mammalian heart. Highlighted Article: Novel mechanisms of the Grl-Smyd2 network govern vertebrate CM renewal and heart regeneration, which might be relevant in developing strategies for regeneration interventions in humans.
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Affiliation(s)
- Peilu She
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200438, China.,Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Huifang Zhang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xiangwen Peng
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, 200438, China
| | - Jianjian Sun
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Bangjun Gao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yating Zhou
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xuejiao Zhu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xueli Hu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Kaa Seng Lai
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Jiemin Wong
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Bin Zhou
- Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Linhui Wang
- Department of Urology, Shanghai Changzheng Hospital, Shanghai, 200003, China
| | - Tao P Zhong
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, School of Life Sciences, East China Normal University, Shanghai, 200241, China
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16
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Blok M, Boukens BJ. Mechanisms of Arrhythmias in the Brugada Syndrome. Int J Mol Sci 2020; 21:ijms21197051. [PMID: 32992720 PMCID: PMC7582368 DOI: 10.3390/ijms21197051] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022] Open
Abstract
Arrhythmias in Brugada syndrome patients originate in the right ventricular outflow tract (RVOT). Over the past few decades, the characterization of the unique anatomy and electrophysiology of the RVOT has revealed the arrhythmogenic nature of this region. However, the mechanisms that drive arrhythmias in Brugada syndrome patients remain debated as well as the exact site of their occurrence in the RVOT. Identifying the site of origin and mechanism of Brugada syndrome would greatly benefit the development of mechanism-driven treatment strategies.
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Affiliation(s)
- Michiel Blok
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Bastiaan J. Boukens
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Correspondence: ; Tel.: +31-(0)20-566-4659
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17
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Ihara D, Watanabe Y, Seya D, Arai Y, Isomoto Y, Nakano A, Kubo A, Ogura T, Kawamura T, Nakagawa O. Expression of Hey2 transcription factor in the early embryonic ventricles is controlled through a distal enhancer by Tbx20 and Gata transcription factors. Dev Biol 2020; 461:124-131. [DOI: 10.1016/j.ydbio.2020.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/01/2020] [Accepted: 02/01/2020] [Indexed: 02/07/2023]
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18
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Monasky MM, Micaglio E, Ciconte G, Pappone C. Brugada Syndrome: Oligogenic or Mendelian Disease? Int J Mol Sci 2020; 21:ijms21051687. [PMID: 32121523 PMCID: PMC7084676 DOI: 10.3390/ijms21051687] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 02/06/2023] Open
Abstract
Brugada syndrome (BrS) is diagnosed by a coved-type ST-segment elevation in the right precordial leads on the electrocardiogram (ECG), and it is associated with an increased risk of sudden cardiac death (SCD) compared to the general population. Although BrS is considered a genetic disease, its molecular mechanism remains elusive in about 70-85% of clinically-confirmed cases. Variants occurring in at least 26 different genes have been previously considered causative, although the causative effect of all but the SCN5A gene has been recently challenged, due to the lack of systematic, evidence-based evaluations, such as a variant's frequency among the general population, family segregation analyses, and functional studies. Also, variants within a particular gene can be associated with an array of different phenotypes, even within the same family, preventing a clear genotype-phenotype correlation. Moreover, an emerging concept is that a single mutation may not be enough to cause the BrS phenotype, due to the increasing number of common variants now thought to be clinically relevant. Thus, not only the complete list of genes causative of the BrS phenotype remains to be determined, but also the interplay between rare and common multiple variants. This is particularly true for some common polymorphisms whose roles have been recently re-evaluated by outstanding works, including considering for the first time ever a polygenic risk score derived from the heterozygous state for both common and rare variants. The more common a certain variant is, the less impact this variant might have on heart function. We are aware that further studies are warranted to validate a polygenic risk score, because there is no mutated gene that connects all, or even a majority, of BrS cases. For the same reason, it is currently impossible to create animal and cell line genetic models that represent all BrS cases, which would enable the expansion of studies of this syndrome. Thus, the best model at this point is the human patient population. Further studies should first aim to uncover genetic variants within individuals, as well as to collect family segregation data to identify potential genetic causes of BrS.
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Affiliation(s)
| | | | | | - Carlo Pappone
- Correspondence: ; Tel.: +39-0252-774260; Fax: +39-0252-774306
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19
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Wang D, Tang X, Liang Q, Zeng X, Yang J, Xu J. microRNA‐599 promotes apoptosis and represses proliferation and epithelial‐mesenchymal transition of papillary thyroid carcinoma cells via downregulation of Hey2‐depentent Notch signaling pathway. J Cell Physiol 2019; 235:2492-2505. [PMID: 31565805 DOI: 10.1002/jcp.29154] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 08/23/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Duo‐Ping Wang
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
| | - Xiao‐Zhun Tang
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
| | - Quan‐Kun Liang
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
| | - Xian‐Jie Zeng
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
| | - Jian‐Bo Yang
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
| | - Jian Xu
- Department of Head and Neck Surgery Affiliated Tumor Hospital of Guangxi Medical University Nanning China
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20
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Cardiomyocyte orientation modulated by the Numb family proteins-N-cadherin axis is essential for ventricular wall morphogenesis. Proc Natl Acad Sci U S A 2019; 116:15560-15569. [PMID: 31300538 PMCID: PMC6681736 DOI: 10.1073/pnas.1904684116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The roles of cellular orientation during trabecular and ventricular wall morphogenesis are unknown, and so are the underlying mechanisms that regulate cellular orientation. Myocardial-specific Numb and Numblike double-knockout (MDKO) hearts display a variety of defects, including in cellular orientation, patterns of mitotic spindle orientation, trabeculation, and ventricular compaction. Furthermore, Numb- and Numblike-null cardiomyocytes exhibit cellular behaviors distinct from those of control cells during trabecular morphogenesis based on single-cell lineage tracing. We investigated how Numb regulates cellular orientation and behaviors and determined that N-cadherin levels and membrane localization are reduced in MDKO hearts. To determine how Numb regulates N-cadherin membrane localization, we generated an mCherry:Numb knockin line and found that Numb localized to diverse endocytic organelles but mainly to the recycling endosome. Consistent with this localization, cardiomyocytes in MDKO did not display defects in N-cadherin internalization but rather in postendocytic recycling to the plasma membrane. Furthermore, N-cadherin overexpression via a mosaic model partially rescued the defects in cellular orientation and trabeculation of MDKO hearts. Our study unravels a phenomenon that cardiomyocytes display spatiotemporal cellular orientation during ventricular wall morphogenesis, and its disruption leads to abnormal trabecular and ventricular wall morphogenesis. Furthermore, we established a mechanism by which Numb modulates cellular orientation and consequently trabecular and ventricular wall morphogenesis by regulating N-cadherin recycling to the plasma membrane.
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21
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Fardoun M, Dehaini H, Kamar A, Bitar F, Majdalani M, El-Rassi I, Nemer G, Arabi M. A Novel Somatic Variant in HEY2 Unveils an Alternative Splicing Isoform Linked to Ventricular Septal Defect. Pediatr Cardiol 2019; 40:1084-1091. [PMID: 30955100 DOI: 10.1007/s00246-019-02099-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 03/23/2019] [Indexed: 10/27/2022]
Abstract
Congenital heart defects (CHDs) are the leading cause of death in infants under 1 year of age. Aberrations in the expression and function of cardiac transcription factors (TFs) are a major contributor to CHDs. Despite the numerous studies undertaken to functionally characterize these TFs, their exact role in different stages of cardiogenesis is still not fully elucidated. Here we focused on HEY2, a basic helix loop helix transcriptional repressor, and its potential role in human ventricular septal defects. Genetic analysis was performed based on sequencing of DNA and cDNA obtained from post-operational cardiac tissues and blood of 17 Lebanese patients with various CHDs. The screen covered the entire coding regions of the GATA4, NKX2.5, TBX5, TBX20 and HEY2 genes. Our results revealed two novel somatic mutations, namely p.Ala229Thr and p.161_190 del, affecting HEY2 in the diseased cardiac tissues of two patients with VSD. These results suggest a potential role of HEY2 in regulating ventricular septation in humans.
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Affiliation(s)
- Manal Fardoun
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Hassan Dehaini
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - Amina Kamar
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - Fadi Bitar
- Department of Pediatrics and Adolescent Medicine, American University of Beirut, Beirut, Lebanon
| | - Marianne Majdalani
- Department of Pediatrics and Adolescent Medicine, American University of Beirut, Beirut, Lebanon
| | - Issam El-Rassi
- Department of Surgery, American University of Beirut, Beirut, Lebanon
| | - Georges Nemer
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Mariam Arabi
- Department of Pediatrics and Adolescent Medicine, American University of Beirut, Beirut, Lebanon.
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22
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Li SS, Zhao XB, Tian JM, Wang HR, Wei TH. Prediction of seed gene function in progressive diabetic neuropathy by a network-based inference method. Exp Ther Med 2019; 17:4176-4182. [PMID: 31007748 PMCID: PMC6468912 DOI: 10.3892/etm.2019.7441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 03/07/2019] [Indexed: 11/07/2022] Open
Abstract
Guilt by association (GBA) algorithm has been widely used to statistically predict gene functions, and network-based approach increases the confidence and veracity of identifying molecular signatures for diseases. This work proposed a network-based GBA method by integrating the GBA algorithm and network, to identify seed gene functions for progressive diabetic neuropathy (PDN). The inference of predicting seed gene functions comprised of three steps: i) Preparing gene lists and sets; ii) constructing a co-expression matrix (CEM) on gene lists by Spearman correlation coefficient (SCC) method and iii) predicting gene functions by GBA algorithm. Ultimately, seed gene functions were selected according to the area under the receiver operating characteristics curve (AUC) index. A total of 79 differentially expressed genes (DEGs) and 40 background gene ontology (GO) terms were regarded as gene lists and sets for the subsequent analyses, respectively. The predicted results obtained from the network-based GBA approach showed that 27.5% of all gene sets had a good classified performance with AUC >0.5. Most significantly, 3 gene sets with AUC >0.6 were denoted as seed gene functions for PDN, including binding, molecular function and regulation of the metabolic process. In summary, we predicted 3 seed gene functions for PDN compared with non-progressors utilizing network-based GBA algorithm. The findings provide insights to reveal pathological and molecular mechanism underlying PDN.
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Affiliation(s)
- Shan-Shan Li
- Department of Endocrinology, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Xin-Bo Zhao
- Department of Endocrinology, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Jia-Mei Tian
- Department of Pediatrics, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Hao-Ren Wang
- Department of Medicine, Linyi Luozhuang Central Hospital, Linyi, Shandong 276000, P.R. China
| | - Tong-Huan Wei
- Department of Medicine, People's Hospital of Linyi High-Tech Industrial Development Zone, Linyi, Shandong 276000, P.R. China
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23
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Rasouli SJ, El-Brolosy M, Tsedeke AT, Bensimon-Brito A, Ghanbari P, Maischein HM, Kuenne C, Stainier DY. The flow responsive transcription factor Klf2 is required for myocardial wall integrity by modulating Fgf signaling. eLife 2018; 7:e38889. [PMID: 30592462 PMCID: PMC6329608 DOI: 10.7554/elife.38889] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 12/24/2018] [Indexed: 12/17/2022] Open
Abstract
Complex interplay between cardiac tissues is crucial for their integrity. The flow responsive transcription factor KLF2, which is expressed in the endocardium, is vital for cardiovascular development but its exact role remains to be defined. To this end, we mutated both klf2 paralogues in zebrafish, and while single mutants exhibit no obvious phenotype, double mutants display a novel phenotype of cardiomyocyte extrusion towards the abluminal side. This extrusion requires cardiac contractility and correlates with the mislocalization of N-cadherin from the lateral to the apical side of cardiomyocytes. Transgenic rescue data show that klf2 expression in endothelium, but not myocardium, prevents this cardiomyocyte extrusion phenotype. Transcriptome analysis of klf2 mutant hearts reveals that Fgf signaling is affected, and accordingly, we find that inhibition of Fgf signaling in wild-type animals can lead to abluminal cardiomyocyte extrusion. These studies provide new insights into how Klf2 regulates cardiovascular development and specifically myocardial wall integrity.
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Affiliation(s)
- Seyed Javad Rasouli
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Mohamed El-Brolosy
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Ayele Taddese Tsedeke
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Anabela Bensimon-Brito
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Parisa Ghanbari
- Department of Cardiac Development and RemodelingMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Hans-Martin Maischein
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Carsten Kuenne
- Bioinformatics Core UnitMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
| | - Didier Y Stainier
- Department of Developmental GeneticsMax Planck Institute for Heart and Lung ResearchBad NauheimGermany
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24
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Gibb N, Lazic S, Yuan X, Deshwar AR, Leslie M, Wilson MD, Scott IC. Hey2 regulates the size of the cardiac progenitor pool during vertebrate heart development. Development 2018; 145:dev.167510. [PMID: 30355727 DOI: 10.1242/dev.167510] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 10/13/2018] [Indexed: 01/04/2023]
Abstract
A key event in heart development is the timely addition of cardiac progenitor cells, defects in which can lead to congenital heart defects. However, how the balance and proportion of progenitor proliferation versus addition to the heart is regulated remains poorly understood. Here, we demonstrate that Hey2 functions to regulate the dynamics of cardiac progenitor addition to the zebrafish heart. We found that the previously noted increase in myocardial cell number found in the absence of Hey2 function was due to a pronounced expansion in the size of the cardiac progenitor pool. Expression analysis and lineage tracing of hey2-expressing cells showed that hey2 is active in cardiac progenitors. Hey2 acted to limit proliferation of cardiac progenitors, prior to heart tube formation. Use of a transplantation approach demonstrated a likely cell-autonomous (in cardiac progenitors) function for Hey2. Taken together, our data suggest a previously unappreciated role for Hey2 in controlling the proliferative capacity of cardiac progenitors, affecting the subsequent contribution of late-differentiating cardiac progenitors to the developing vertebrate heart.
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Affiliation(s)
- Natalie Gibb
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Savo Lazic
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada
| | - Xuefei Yuan
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada
| | - Ashish R Deshwar
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada
| | - Meaghan Leslie
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada
| | - Michael D Wilson
- Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada
| | - Ian C Scott
- Program in Developmental and Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada .,Department of Molecular Genetics, University of Toronto, Ontario M5S 1A8, Canada.,Ted Rogers Centre for Heart Research, Toronto, Ontario M5G 1M1, Canada.,Heart and Stroke Richard Lewar Centres of Excellence in Cardiovascular Research, Toronto, Ontario M5S 3H2, Canada
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Wu M. Mechanisms of Trabecular Formation and Specification During Cardiogenesis. Pediatr Cardiol 2018; 39:1082-1089. [PMID: 29594501 PMCID: PMC6164162 DOI: 10.1007/s00246-018-1868-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/14/2018] [Indexed: 01/08/2023]
Abstract
Trabecular morphogenesis is a key morphologic event during cardiogenesis and contributes to the formation of a competent ventricular wall. Lack of trabeculation results in embryonic lethality. The trabecular morphogenesis is a multistep process that includes, but is not limited to, trabecular initiation, proliferation/growth, specification, and compaction. Although a number of signaling molecules have been implicated in regulating trabeculation, the cellular processes underlying mammalian trabecular formation are not fully understood. Recent works show that the myocardium displays polarity, and oriented cell division (OCD) and directional migration of the cardiomyocytes in the monolayer myocardium are required for trabecular initiation and formation. Furthermore, perpendicular OCD is an extrinsic asymmetric cell division that contributes to trabecular specification, and is a mechanism that causes the trabecular cardiomyocytes to be distinct from the cardiomyocytes in compact zone. Once the coronary vasculature system starts to function in the embryonic heart, the trabeculae will coalesce with the compact zone to thicken the heart wall, and abnormal compaction will lead to left ventricular non-compaction (LVNC) and heart failure. There are many reviews about compaction and LVNC. In this review, we will focus on the roles of myocardial polarity and OCD in trabecular initiation, formation, and specification.
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Affiliation(s)
- Mingfu Wu
- Department of Molecular and Cellular Physiology, Albany Medical College, 43 New Scotland Ave, Albany, NY, 12208, USA.
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