1 Interleukin-17 Limits Hypoxia-Inducible Factor 1Α And
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FLNC Pathogenic Variants in Patients with Cardiomyopathies
FLNC pathogenic variants in patients with cardiomyopathies: Prevalence and genotype-phenotype correlations Flavie Ader, Pascal de Groote, Patricia Réant, Caroline Rooryck-Thambo, Delphine Dupin-Deguine, Caroline Rambaud, Diala Khraiche, Claire Perret, Jean-François Pruny, Michèle Mathieu-dramard, et al. To cite this version: Flavie Ader, Pascal de Groote, Patricia Réant, Caroline Rooryck-Thambo, Delphine Dupin-Deguine, et al.. FLNC pathogenic variants in patients with cardiomyopathies: Prevalence and genotype-phenotype correlations. Clinical Genetics, Wiley, 2019, 96 (4), pp.317-329. 10.1111/cge.13594. hal-02268422 HAL Id: hal-02268422 https://hal-normandie-univ.archives-ouvertes.fr/hal-02268422 Submitted on 29 Jun 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. FLNC pathogenic variants in patients with cardiomyopathies Prevalence and genotype-phenotype correlations Running Title : FLNC variants genotype-phenotype correlation Flavie Ader1,2,3, Pascal De Groote4, Patricia Réant5, Caroline Rooryck-Thambo6, Delphine Dupin-Deguine7, Caroline Rambaud8, Diala Khraiche9, Claire Perret2, Jean Francois Pruny10, Michèle Mathieu Dramard11, Marion Gérard12, Yann Troadec12, Laurent Gouya13, Xavier Jeunemaitre14, Lionel Van Maldergem15, Albert Hagège16, Eric Villard2, Philippe Charron2, 10, Pascale Richard1, 2, 10. Conflict of interest statement: none declared for each author 1. -
Hypoxia and Oxygen-Sensing Signaling in Gene Regulation and Cancer Progression
International Journal of Molecular Sciences Review Hypoxia and Oxygen-Sensing Signaling in Gene Regulation and Cancer Progression Guang Yang, Rachel Shi and Qing Zhang * Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; [email protected] (G.Y.); [email protected] (R.S.) * Correspondence: [email protected]; Tel.: +1-214-645-4671 Received: 6 October 2020; Accepted: 29 October 2020; Published: 31 October 2020 Abstract: Oxygen homeostasis regulation is the most fundamental cellular process for adjusting physiological oxygen variations, and its irregularity leads to various human diseases, including cancer. Hypoxia is closely associated with cancer development, and hypoxia/oxygen-sensing signaling plays critical roles in the modulation of cancer progression. The key molecules of the hypoxia/oxygen-sensing signaling include the transcriptional regulator hypoxia-inducible factor (HIF) which widely controls oxygen responsive genes, the central members of the 2-oxoglutarate (2-OG)-dependent dioxygenases, such as prolyl hydroxylase (PHD or EglN), and an E3 ubiquitin ligase component for HIF degeneration called von Hippel–Lindau (encoding protein pVHL). In this review, we summarize the current knowledge about the canonical hypoxia signaling, HIF transcription factors, and pVHL. In addition, the role of 2-OG-dependent enzymes, such as DNA/RNA-modifying enzymes, JmjC domain-containing enzymes, and prolyl hydroxylases, in gene regulation of cancer progression, is specifically reviewed. We also discuss the therapeutic advancement of targeting hypoxia and oxygen sensing pathways in cancer. Keywords: hypoxia; PHDs; TETs; JmjCs; HIFs 1. Introduction Molecular oxygen serves as a co-factor in many biochemical processes and is fundamental for aerobic organisms to maintain intracellular ATP levels [1,2]. -
Genetic Variation Screening of TNNT2 Gene in a Cohort of Patients with Hypertrophic and Dilated Cardiomyopathy
Physiol. Res. 61: 169-175, 2012 https://doi.org/10.33549/physiolres.932157 Genetic Variation Screening of TNNT2 Gene in a Cohort of Patients With Hypertrophic and Dilated Cardiomyopathy M. JÁCHYMOVÁ1, A. MURAVSKÁ1, T. PALEČEK2, P. KUCHYNKA2, H. ŘEHÁKOVÁ1, S. MAGAGE2, A. KRÁL2, T. ZIMA1, K. HORKÝ2, A. LINHART2 1Institute of Clinical Chemistry and Laboratory Diagnostics, First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic, 2Second Department of Internal Medicine – Clinical Department of Cardiology and Angiology, First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic Received February 1, 2011 Accepted October 17, 2011 On-line January 31, 2012 Summary Introduction Mutations in troponin T (TNNT2) gene represent the important part of currently identified disease-causing mutations in Cardiomyopathies are generally defined as hypertrophic (HCM) and dilated (DCM) cardiomyopathy. The aim myocardial disorders in which the heart muscle is of this study was to analyze TNNT2 gene exons in patients with structurally and functionally abnormal, in the absence of HCM and DCM diagnosis to improve diagnostic and genetic coronary artery disease, hypertension, valvular disease consultancy in affected families. All 15 exons and their flanking and congenital heart disease sufficient to cause the regions of the TNNT2 gene were analyzed by DNA sequence observed myocardial abnormality (Elliott et al. 2008). analysis in 174 patients with HCM and DCM diagnosis. We According to the morphological and functional phenotype identified genetic variations in TNNT2 exon regions in 56 patients the diagnosis of hypertrophic and dilated cardiomyopathy and genetic variations in TNNT2 intron regions in 164 patients. -
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Int. J. Mol. Sci. 2014, 15, 21788-21802; doi:10.3390/ijms151221788 OPEN ACCESS International Journal of Molecular Sciences ISSN 1422-0067 www.mdpi.com/journal/ijms Article Interactome Mapping Reveals Important Pathways in Skeletal Muscle Development of Pigs Jianhua Cao, Tinghua Huang, Xinyun Li and Shuhong Zhao * Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education of China, College of Animal Science and Technology, Huazhong Agricultural University, 1 Shizishan St., Wuhan 430070, China; E-Mails: [email protected] (J.C.); [email protected] (T.H.); [email protected] (X.L.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +86-27-8738-7480; Fax: +86-27-8728-0408. External Editor: Mark L. Richter Received: 15 July 2014; in revised form: 19 October 2014 / Accepted: 6 November 2014 / Published: 26 November 2014 Abstract: The regulatory relationship and connectivity among genes involved in myogenesis and hypertrophy of skeletal muscle in pigs still remain large challenges. Presentation of gene interactions is a potential way to understand the mechanisms of developmental events in skeletal muscle. In this study, genome-wide transcripts and miRNA profiling was determined for Landrace pigs at four time points using microarray chips. A comprehensive method integrating gene ontology annotation and interactome network mapping was conducted to analyze the biological patterns and interaction modules of muscle development events based on differentially expressed genes and miRNAs. Our results showed that in total 484 genes and 34 miRNAs were detected for the duration from embryonic stage to adult in pigs, which composed two linear expression patterns with consensus changes. -
Interplay Between Epigenetics and Metabolism in Oncogenesis: Mechanisms and Therapeutic Approaches
OPEN Oncogene (2017) 36, 3359–3374 www.nature.com/onc REVIEW Interplay between epigenetics and metabolism in oncogenesis: mechanisms and therapeutic approaches CC Wong1, Y Qian2,3 and J Yu1 Epigenetic and metabolic alterations in cancer cells are highly intertwined. Oncogene-driven metabolic rewiring modifies the epigenetic landscape via modulating the activities of DNA and histone modification enzymes at the metabolite level. Conversely, epigenetic mechanisms regulate the expression of metabolic genes, thereby altering the metabolome. Epigenetic-metabolomic interplay has a critical role in tumourigenesis by coordinately sustaining cell proliferation, metastasis and pluripotency. Understanding the link between epigenetics and metabolism could unravel novel molecular targets, whose intervention may lead to improvements in cancer treatment. In this review, we summarized the recent discoveries linking epigenetics and metabolism and their underlying roles in tumorigenesis; and highlighted the promising molecular targets, with an update on the development of small molecule or biologic inhibitors against these abnormalities in cancer. Oncogene (2017) 36, 3359–3374; doi:10.1038/onc.2016.485; published online 16 January 2017 INTRODUCTION metabolic genes have also been identified as driver genes It has been appreciated since the early days of cancer research mutated in some cancers, such as isocitrate dehydrogenase 1 16 17 that the metabolic profiles of tumor cells differ significantly from and 2 (IDH1/2) in gliomas and acute myeloid leukemia (AML), 18 normal cells. Cancer cells have high metabolic demands and they succinate dehydrogenase (SDH) in paragangliomas and fuma- utilize nutrients with an altered metabolic program to support rate hydratase (FH) in hereditary leiomyomatosis and renal cell 19 their high proliferative rates and adapt to the hostile tumor cancer (HLRCC). -
Towards Mutation-Specific Precision Medicine in Atypical Clinical
International Journal of Molecular Sciences Review Towards Mutation-Specific Precision Medicine in Atypical Clinical Phenotypes of Inherited Arrhythmia Syndromes Tadashi Nakajima * , Shuntaro Tamura, Masahiko Kurabayashi and Yoshiaki Kaneko Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi 371-8511, Gunma, Japan; [email protected] (S.T.); [email protected] (M.K.); [email protected] (Y.K.) * Correspondence: [email protected]; Tel.: +81-27-220-8145; Fax: +81-27-220-8158 Abstract: Most causal genes for inherited arrhythmia syndromes (IASs) encode cardiac ion channel- related proteins. Genotype-phenotype studies and functional analyses of mutant genes, using heterol- ogous expression systems and animal models, have revealed the pathophysiology of IASs and enabled, in part, the establishment of causal gene-specific precision medicine. Additionally, the utilization of induced pluripotent stem cell (iPSC) technology have provided further insights into the patho- physiology of IASs and novel promising therapeutic strategies, especially in long QT syndrome. It is now known that there are atypical clinical phenotypes of IASs associated with specific mutations that have unique electrophysiological properties, which raises a possibility of mutation-specific precision medicine. In particular, patients with Brugada syndrome harboring an SCN5A R1632C mutation exhibit exercise-induced cardiac events, which may be caused by a marked activity-dependent loss of R1632C-Nav1.5 availability due to a marked delay of recovery from inactivation. This suggests that the use of isoproterenol should be avoided. Conversely, the efficacy of β-blocker needs to be examined. Patients harboring a KCND3 V392I mutation exhibit both cardiac (early repolarization syndrome and Citation: Nakajima, T.; Tamura, S.; paroxysmal atrial fibrillation) and cerebral (epilepsy) phenotypes, which may be associated with a Kurabayashi, M.; Kaneko, Y. -
Treatment of Aged Mice and Long-Term Durability of AAV-Mediated Gene Therapy in Two Mouse Models of LGMD Eric R
P.137 Treatment of Aged Mice and Long-term Durability of AAV-Mediated Gene Therapy in Two Mouse Models of LGMD Eric R. Pozsgai, Danielle A. Griffin, Ellyn L. Peterson, Amber Kempton, Oliver Rogers, Young-Eun Seo, Louise R. Rodino-Klapac Sarepta Therapeutics, Inc., Cambridge, Massachusetts, USA BACKGROUND RESULTS RESULTS (CONT’D) • The sarcoglycanopathies are a subset of autosomal recessive limb-girdle muscular dystrophies (LGMD) Figure 1. Expression analysis: Immunofluorescence staining and western blot on skeletal • Functional improvement was observed with significantly increased resistance to contraction-induced injury resulting from mutations in the sarcoglycans (α, β, γ, and δ-SG) leading to protein deficiency, loss of in the TA muscle (Figure 3). formation of the sarcoglycan complex, and loss of stabilization of the dystrophin-associated protein muscle indicating biomarker expression in aged, severely diseased muscle complex (DAPC). Figure 3. Functional analysis: Protection of force output following long-term treatment of • Sarcoglycanopathies present as progressive muscular dystrophies starting in the girdle muscles before aged SGCA-/- mice with severely diseased muscle extending to lower and upper extremity muscles, and can also present in the diaphragm and heart, resulting in respiratory and cardiac failure in specific patient subtypes. SKELETAL MUSCLE • Adeno-associated virus (AAV)-mediated gene transfer therapy has shown early signs of potential to treat sarcoglycanopathies. Key considerations include a systematic and stepwise -
Mutant IDH, (R)-2-Hydroxyglutarate, and Cancer
Downloaded from genesdev.cshlp.org on October 1, 2021 - Published by Cold Spring Harbor Laboratory Press REVIEW What a difference a hydroxyl makes: mutant IDH, (R)-2-hydroxyglutarate, and cancer Julie-Aurore Losman1 and William G. Kaelin Jr.1,2,3 1Department of Medical Oncology, Dana-Farber Cancer Institute, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA; 2Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA Mutations in metabolic enzymes, including isocitrate whether altered cellular metabolism is a cause of cancer dehydrogenase 1 (IDH1) and IDH2, in cancer strongly or merely an adaptive response of cancer cells in the face implicate altered metabolism in tumorigenesis. IDH1 of accelerated cell proliferation is still a topic of some and IDH2 catalyze the interconversion of isocitrate and debate. 2-oxoglutarate (2OG). 2OG is a TCA cycle intermediate The recent identification of cancer-associated muta- and an essential cofactor for many enzymes, including tions in three metabolic enzymes suggests that altered JmjC domain-containing histone demethylases, TET cellular metabolism can indeed be a cause of some 5-methylcytosine hydroxylases, and EglN prolyl-4-hydrox- cancers (Pollard et al. 2003; King et al. 2006; Raimundo ylases. Cancer-associated IDH mutations alter the enzymes et al. 2011). Two of these enzymes, fumarate hydratase such that they reduce 2OG to the structurally similar (FH) and succinate dehydrogenase (SDH), are bone fide metabolite (R)-2-hydroxyglutarate [(R)-2HG]. Here we tumor suppressors, and loss-of-function mutations in FH review what is known about the molecular mechanisms and SDH have been identified in various cancers, in- of transformation by mutant IDH and discuss their im- cluding renal cell carcinomas and paragangliomas. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
Inhibition of Β-Catenin Signaling Respecifies Anterior-Like Endothelium Into Beating Human Cardiomyocytes Nathan J
© 2015. Published by The Company of Biologists Ltd | Development (2015) 142, 3198-3209 doi:10.1242/dev.117010 RESEARCH ARTICLE STEM CELLS AND REGENERATION Inhibition of β-catenin signaling respecifies anterior-like endothelium into beating human cardiomyocytes Nathan J. Palpant1,2,3,*, Lil Pabon1,2,3,*, Meredith Roberts2,3,4, Brandon Hadland5,6, Daniel Jones7, Christina Jones3,8,9, Randall T. Moon3,8,9, Walter L. Ruzzo7, Irwin Bernstein5,6, Ying Zheng2,3,4 and Charles E. Murry1,2,3,4,10,‡ ABSTRACT lineages. Anterior mesoderm (mid-streak) gives rise to cardiac and endocardial endothelium, whereas posterior mesoderm (posterior During vertebrate development, mesodermal fate choices are regulated streak) gives rise to the blood-forming endothelium and vasculature by interactions between morphogens such as activin/nodal, BMPs and (Murry and Keller, 2008). Wnt/β-catenin that define anterior-posterior patterning and specify Well-described anterior-posterior morphogen gradients, downstream derivatives including cardiomyocyte, endothelial and including those of activin A/nodal and BMP4, are thought to hematopoietic cells. We used human embryonic stem cells to explore pattern mesoderm subtypes (Nostro et al., 2008; Sumi et al., 2008; how these pathways control mesodermal fate choices in vitro. Varying Kattman et al., 2011). Such gradients are proposed to specify doses of activin A and BMP4 to mimic cytokine gradient polarization anterior mesodermal fates like cardiomyocytes versus posterior in the anterior-posterior axis of the embryo led to differential activity mesodermal fates like blood. Remarkably, a recent study showed of Wnt/β-catenin signaling and specified distinct anterior-like (high activin/ that ectopic induction of a nodal/BMP gradient in zebrafish embryos low BMP) and posterior-like (low activin/high BMP) mesodermal was sufficient to create an entirely new embryonic axis that could populations. -
A Clinicopathological and Molecular Genetic Analysis of Low-Grade Glioma in Adults
A CLINICOPATHOLOGICAL AND MOLECULAR GENETIC ANALYSIS OF LOW-GRADE GLIOMA IN ADULTS Presented by ANUSHREE SINGH MSc A thesis submitted in partial fulfilment of the requirements of the University of Wolverhampton for the degree of Doctor of Philosophy Brain Tumour Research Centre Research Institute in Healthcare Sciences Faculty of Science and Engineering University of Wolverhampton November 2014 i DECLARATION This work or any part thereof has not previously been presented in any form to the University or to any other body whether for the purposes of assessment, publication or for any other purpose (unless otherwise indicated). Save for any express acknowledgments, references and/or bibliographies cited in the work, I confirm that the intellectual content of the work is the result of my own efforts and of no other person. The right of Anushree Singh to be identified as author of this work is asserted in accordance with ss.77 and 78 of the Copyright, Designs and Patents Act 1988. At this date copyright is owned by the author. Signature: Anushree Date: 30th November 2014 ii ABSTRACT The aim of the study was to identify molecular markers that can determine progression of low grade glioma. This was done using various approaches such as IDH1 and IDH2 mutation analysis, MGMT methylation analysis, copy number analysis using array comparative genomic hybridisation and identification of differentially expressed miRNAs using miRNA microarray analysis. IDH1 mutation was present at a frequency of 71% in low grade glioma and was identified as an independent marker for improved OS in a multivariate analysis, which confirms the previous findings in low grade glioma studies. -
Transparent Transgenic in Vivo Zebrafish Model To
cells Protocol Development of Tg(UAS:SEC-Hsa.ANXA5-YFP,myl7:RFP); Casper(roy−/−,nacre−/−) Transparent Transgenic In Vivo Zebrafish Model to Study the Cardiomyocyte Function Surendra K. Rajpurohit 1,* , Aaron Gopal 2, May Ye Mon 1 , Nikhil G. Patel 3 and Vishal Arora 2,* 1 Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; [email protected] 2 Department of Medicine, Division of Cardiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; [email protected] 3 Department of Pathology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; [email protected] * Correspondence: [email protected] (S.K.R.); [email protected] (V.A.) Abstract: The zebrafish provided an excellent platform to study the genetic and molecular approach of cellular phenotype-based cardiac research. We designed a novel protocol to develop the transparent transgenic zebrafish model to study annexin-5 activity in the cardiovascular function by generating homozygous transparent skin Casper(roy−/−,nacre−/−); myl7:RFP; annexin-5:YFP transgenic ze- brafish. The skin pigmentation background of any vertebrate model organism is a major obstruction for in vivo confocal imaging to study the transgenic cellular phenotype-based study. By developing Citation: Rajpurohit, S.K.; Gopal, A.; Casper(roy−/−,nacre−/−); myl7; annexin-5 transparent transgenic zebrafish strain, we established Mon, M.Y.; Patel, N.G.; Arora, V. time-lapse in vivo confocal microscopy to study cellular phenotype/pathologies of cardiomyocytes Development of Tg(UAS:SEC- over time to quantify changes in cardiomyocyte morphology and function over time, comparing Hsa.ANXA5-YFP,myl7:RFP); control and cardiac injury and cardio-oncology.