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Popova L, Carabetta VJ. The use of next-generation sequencing in personalized medicine. ARXIV 2024:arXiv:2403.03688v1. [PMID: 38495572 PMCID: PMC10942477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The revolutionary progress in development of next-generation sequencing (NGS) technologies has made it possible to deliver accurate genomic information in a timely manner. Over the past several years, NGS has transformed biomedical and clinical research and found its application in the field of personalized medicine. Here we discuss the rise of personalized medicine and the history of NGS. We discuss current applications and uses of NGS in medicine, including infectious diseases, oncology, genomic medicine, and dermatology. We provide a brief discussion of selected studies where NGS was used to respond to wide variety of questions in biomedical research and clinical medicine. Finally, we discuss the challenges of implementing NGS into routine clinical use.
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Affiliation(s)
- Liya Popova
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden NJ, 08103
| | - Valerie J. Carabetta
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden NJ, 08103
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2
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Wilsdon A, Loughna S. Human Genetics of Congenital Heart Defects. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:57-75. [PMID: 38884704 DOI: 10.1007/978-3-031-44087-8_2] [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
Congenital heart diseases (or congenital heart defects/disorders; CHDs) are structural abnormalities of the heart and/or great vessels that are present at birth. CHDs include an extensive range of defects that may be minor and require no intervention or may be life-limiting and require complex surgery shortly after birth. This chapter reviews the current knowledge on the genetic causes of CHD.
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Affiliation(s)
- Anna Wilsdon
- School of Life Sciences, University of Nottingham, Nottingham, UK.
- Clinical Geneticist at Nottingham Clinical Genetics Department, Nottingham University Hospitals, City Hospital, Nottingham, UK.
| | - Siobhan Loughna
- School of Life Sciences, University of Nottingham, Nottingham, UK
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3
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Mubeen H, Farooq M, Rehman AU, Zubair M, Haque A. Gene expression and transcriptional regulation driven by transcription factors involved in congenital heart defects. Ir J Med Sci 2022; 192:595-604. [PMID: 35441975 DOI: 10.1007/s11845-022-02974-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/24/2022] [Indexed: 12/22/2022]
Abstract
BACKGROUND Congenital heart disease (CHD) is one of the most important birth defects caused by more than one mutated gene. Mutations in the genes could cause different types of congenital heart defects including atrial septal defect (ASD), tetralogy of Fallot (TOF), and ventricular septal defect (VSD). OBJECTIVES Cardiac transcription factors are key players for heart development and are actively involved in controlling stress regulation of the heart. Transcription factors are sequence-specific DNA binding proteins that control the process of transcription and work in a synergistic manner. We aim to characterize core cardiac transcription factors including NKX2-5, TBX, SRF, GATA4, and MEF2, which encode homeobox and MADS domain and play a crucial role in heart development. METHODS In this study, we have explored the important transcription factors involved in cardiac development and genes controlling the expression and regulation process by using the bioinformatics approach. RESULTS We have predicted the orthologs and homologs based on their evolutionary history, conserved protein domains, functional sites, and 3D structures for better understanding and presentation of factors responsible for causing CHD. Results showed the importance of these transcription factors for normal heart functioning and development. CONCLUSION Understanding the molecular pathways and genetic basis of CHD will help to open a new door for the treatment of patients with cardiac defects.
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Affiliation(s)
- Hira Mubeen
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Farooq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan. .,Department of Bioinformatics, Institute of Biochemistry, Biotechnology & Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
| | | | - Muhammad Zubair
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Asma Haque
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
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Abbasi S, Mohsen-Pour N, Naderi N, Rahimi S, Maleki M, Kalayinia S. In silico analysis of GATA4 variants demonstrates main contribution to congenital heart disease. J Cardiovasc Thorac Res 2021; 13:336-354. [PMID: 35047139 PMCID: PMC8749364 DOI: 10.34172/jcvtr.2021.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/05/2021] [Accepted: 09/24/2021] [Indexed: 12/05/2022] Open
Abstract
Introduction: Congenital heart disease (CHD) is the most common congenital abnormality and the main cause of infant mortality worldwide. Some of the mutations that occur in the GATA4 gene region may result in different types of CHD. Here, we report our in silico analysis of gene variants to determine the effects of the GATA4 gene on the development of CHD.
Methods: Online 1000 Genomes Project, ExAC, gnomAD, GO-ESP, TOPMed, Iranome, GME, ClinVar, and HGMD databases were drawn upon to collect information on all the reported GATA4 variations.The functional importance of the genetic variants was assessed by using SIFT, MutationTaster, CADD,PolyPhen-2, PROVEAN, and GERP prediction tools. Thereafter, network analysis of the GATA4protein via STRING, normal/mutant protein structure prediction via HOPE and I-TASSER, and phylogenetic assessment of the GATA4 sequence alignment via ClustalW were performed.
Results: The most frequent variant was c.874T>C (45.58%), which was reported in Germany.Ventricular septal defect was the most frequent type of CHD. Out of all the reported variants of GATA4,38 variants were pathogenic. A high level of pathogenicity was shown for p.Gly221Arg (CADD score=31), which was further analyzed.
Conclusion: The GATA4 gene plays a significant role in CHD; we, therefore, suggest that it be accorded priority in CHD genetic screening.
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Affiliation(s)
- Shiva Abbasi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Neda Mohsen-Pour
- Zanjan Pharmaceutical Biotechnology Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Niloofar Naderi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Shahin Rahimi
- Department of Cardiology, Rajaie Cardiovascular Medical and Research Centre, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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5
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Khatami M, Ghorbani S, Adriani MR, Bahaloo S, Naeini MA, Heidari MM, Hadadzadeh M. Novel Point Mutations in 3'-Untranslated Region of GATA4 Gene Are Associated with Sporadic Non-syndromic Atrial and Ventricular Septal Defects. Curr Med Sci 2021; 42:129-143. [PMID: 34652630 DOI: 10.1007/s11596-021-2428-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 01/14/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Transcription factor GATA4 has significant roles in embryonic heart development. Mutations of GATA4 appear to be responsible for a wide variety of congenital heart defects (CHD). Despite the high prevalence of GATA4 mutations in CHD phenotypes, extensive studies have not been performed. The 3'-untranslated region (3'-UTR) of the GATA4 gene comprises regulatory motifs and microRNA binding sites that are critical for the appropriate gene expression, nuclear transportation, and regulation of translation, and stability of mRNA. This study aimed to evaluate the association between mutations in the 3'-UTR of the GATA4 gene and CHD risk among Iranian patients. METHODS We analyzed the coding region of exon 6 and the whole 3'-UTR of GATA4 in DNA isolated from 175 blood samples of CHD patients and 115 unrelated healthy individuals. The functional importance of the observed GATA4 mutations was evaluated using a variety of bioinformatics algorithms for assessment of nonsynonymous mutations and those observed in miRNA binding sites of 3'-UTR. RESULTS Twenty-one point mutations including one missense mutation (c.511A>G: p.Ser377Gly) in exon 6 and 20 nucleotide variations in 3'-UTR of GATA4 gene were identified in 65 of the 175 CHD patients. In our patients, we identified 12 novel sequence alterations and 8 single nucleotide polymorphisms in the 3'-UTR of GATA4. Most of them had statistically significant differences between CHD patients and controls. CONCLUSION Our results suggest that 3'-UTR variations of the GATA4 gene probably change microRNA binding sites and present an additional molecular risk factor for the susceptibility of CHD.
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Affiliation(s)
- Mehri Khatami
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran.
| | - Sajedeh Ghorbani
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | | | - Sahar Bahaloo
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | - Mehri Azami Naeini
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | | | - Mehdi Hadadzadeh
- Department of Cardiac Surgery, Afshar Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, 8915887856, Iran
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6
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El Bouchikhi I, Bouguenouch L, Moufid FZ, Belhassan K, Samri I, Chaouti A, Houssaïni MI, Atmani S, Ouldim K. Absence of GATA4 Mutations in Moroccan Patients with Atrial Septal Defect (ASD) Provides Further Evidence of Limited Involvement of GATA4 in Major Congenital Heart Defects. Eurasian J Med 2020; 52:283-287. [PMID: 33209082 DOI: 10.5152/eurasianjmed.2020.19237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective Atrial septal defect (ASD) is one of the most common types of congenital heart disease (CHD). It is mainly caused by mutations of NK2 homeobox 5, GATA binding protein 4 (GATA4), and myosin heavy chain 6 in non-syndromic cases. This study aims to carry out, for the first time, the GATA4 mutation screening in a Moroccan population affected by ASD and compare the obtained mutation rate across populations. Materials and Methods A total of 33 patients were enrolled in this study. DNAs were extracted from peripheral blood samples, and we performed PCR-sequencing for GATA4 coding regions. Sequences were analyzed by sequence alignment and functional impact prediction tools. Mutation rate comparisons were performed by R software using the appropriate statistical tests. Results We detected 7 variants, but no pathogenic mutation was revealed, except for Asn352= that was assessed by human splicing finder algorithms to have a potential impairing effect on the splicing mechanism. Until proven by in vitro functional studies, the current pathogenic mutation rate in our cohort seems to be 0%. Statistical comparison with previous studies from all over the world shows no significant difference. Seemingly, comparison of previous GATA4 mutation rates among tetralogy of Fallot (TOF) populations shows no significant difference. Conclusion The low rates of GATA4 mutations observed throughout ASD and TOF international populations may suggest a limited causality of GATA4 mutations in the main CHDs, which further confirms the co-involvement of additional genetic and/or environmental factors in the manifestation of these phenotypes.
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Affiliation(s)
- Ihssane El Bouchikhi
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco.,Molecular Biology Laboratory, Faculty of Medicine and Pharmacy, University of Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - Laila Bouguenouch
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Fatima Zohra Moufid
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Khadija Belhassan
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Imane Samri
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Amal Chaouti
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Mohammed Iraqui Houssaïni
- Laboratory of Microbial Biotechnology, Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - Samir Atmani
- Department of Pediatrics, Medico-surgical Unit of Cardio-pediatrics, HASSAN II University Hospital, Fez, Morocco
| | - Karim Ouldim
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
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7
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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: 0.8] [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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8
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Su W, Wang RC, Lohano MK, Wang L, Zhu P, Luo Y, Guo LJ, Lv Q, Jiang H, Wang JH, Mei L, Weng J, Su L, Dong NG. Identification of Two Mutations in PCDHGA4 and SLFN14 Genes in an Atrial Septal Defect Family. Curr Med Sci 2018; 38:989-996. [PMID: 30536060 DOI: 10.1007/s11596-018-1974-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 05/22/2018] [Indexed: 01/01/2023]
Abstract
Atrial septal defect (ASD) is a common acyanotic congenital cardiac disorder associated with genetic mutations. The objective of this study was to identify the genetic factors in a Chinese family with ASD patients by a whole exome sequencing approach. Causative ASD gene mutations were examined in 16 members from a three-generation family, among which 6 individuals were diagnosed as having ASD. One hundred and eighty-three unrelated healthy Chinese were recruited as a normal control group. Peripheral venous blood was collected from every subject for genetic analysis. Exome sequencing was performed in the ASD patients. Potential causal mutations were detected in non-ASD family members and normal controls by polymerase chain reaction and sequencing analysis. The results showed that all affected family members carried two novel compound mutations, c.1187delT of PCDHGA4 and c.2557insC of SLFN14, and these two mutations were considered to have synergetic function on ASD. In conclusion, the mutations of c.1187delT of PCDHGA4 and c.2557insC of SLFN14 may be pathogenic factors contributing to the development of ASD.
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Affiliation(s)
- Wei Su
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ruo-Chen Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China
| | - Mahesh Kumar Lohano
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China
| | - Li Wang
- Department of Internal Medicine, Affiliated Hospital of Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Peng Zhu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yue Luo
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China
| | - Li-Juan Guo
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China
| | - Qing Lv
- Department of Ultrasonography, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hong Jiang
- Department of Internal Medicine, Affiliated Hospital of Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jun-Han Wang
- Department of Internal Medicine, Affiliated Hospital of Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Li Mei
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jun Weng
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China
| | - Li Su
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Wuhan, 430074, China.
| | - Nian-Guo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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El Bouchikhi I, Belhassan K, Moufid FZ, Houssaini MI, Bouguenouch L, Samri I, Bouhrim M, Ouldim K, Atmani S. GATA4 molecular screening and assessment of environmental risk factors in a Moroccan cohort with tetralogy of Fallot. Afr Health Sci 2018; 18:922-930. [PMID: 30766556 PMCID: PMC6354854 DOI: 10.4314/ahs.v18i4.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart defect (CHD) with an incidence of 1/3600 live births. This disorder was associated with mutations in the transcription factors involved in cardiogenesis, like Nk2 homeobox5 (NKX2-5), GATA binding protein4 (GATA4) and T-BOX1 (TBX1). GATA4 contributes particularly to heart looping and differentiation of the second heart field. Objectives The aim of this study was to screen a Moroccan cohort with tetralogy of Fallot for GATA4 mutations, and to assess environmental risk factors that could be involved in the occurrence of this disorder. Methods Thirty-one non-syndromic TOF patients, enrolled between 5th April 2014 and 18th June 2015, were screened for GATA4 mutations using direct sequencing of GATA4 coding exons. Statistical assessment of different risk factors, which is a retrospective study, was carried out using Chi-square and Fisher's exact tests. Results We identified seven exonic variants in nine patients (two missense and five synonymous variants); in addition of eight intronic variants. Assessment of environmental risk factors shows significant association of maternal passive smoking with TOF in the Moroccan population. Conclusion The present study allowed, for the first time, the molecular and environmental characterisation of Moroccan TOF population. Our findings emphasise particularly the strong association of passive smoking with the emergence of tetralogy of Fallot.
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Affiliation(s)
- Ihssane El Bouchikhi
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
- Laboratory of Microbial Biotechnology, Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - Khadija Belhassan
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Fatima Zohra Moufid
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
- Laboratory of Microbial Biotechnology, Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - Mohammed Iraqui Houssaini
- Laboratory of Microbial Biotechnology, Faculty of Sciences and Techniques, University of Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - Laila Bouguenouch
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Imane Samri
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Mohamed Bouhrim
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Karim Ouldim
- Laboratory of Medical Genetics and Oncogenetics, HASSAN II University Hospital, Fez, Morocco
| | - Samir Atmani
- Medico-Surgical Unit of Cardio-Pediatrics, Department of Pediatrics, HASSAN II University Hospital, Fez, Morocco
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10
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Dixit R, Narasimhan C, Balekundri VI, Agrawal D, Kumar A, Mohapatra B. Functionally significant, novel GATA4
variants are frequently associated with Tetralogy of Fallot. Hum Mutat 2018; 39:1957-1972. [DOI: 10.1002/humu.23620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 08/13/2018] [Accepted: 08/20/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Ritu Dixit
- Cytogenetics Laboratory; Department of Zoology; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Chitra Narasimhan
- Department of Pediatric Cardiology; Sri Jayadeva Institute of Cardiovascular Sciences and Research; Bengaluru Karnataka India
| | - Vijyalakshmi I. Balekundri
- Super Speciality Hospital; Prime Minister Swasth Suraksha Yojana (PMSSY); Bengaluru Medical College and Research Institute; Bengaluru Karnataka India
| | - Damyanti Agrawal
- Department of Cardio-vascular and Thoracic Surgery; Institute of Medical Science; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Ashok Kumar
- Department of Pediatrics; Institute of Medical Sciences; Banaras Hindu University; Varanasi Uttar Pradesh India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory; Department of Zoology; Banaras Hindu University; Varanasi Uttar Pradesh India
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11
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Kim BJ, Zaveri HP, Jordan VK, Hernandez-Garcia A, Jacob DJ, Zamora DL, Yu W, Schwartz RJ, Scott DA. RERE deficiency leads to decreased expression of GATA4 and the development of ventricular septal defects. Dis Model Mech 2018; 11:dmm.031534. [PMID: 30061196 PMCID: PMC6176990 DOI: 10.1242/dmm.031534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 07/09/2018] [Indexed: 12/18/2022] Open
Abstract
Deletions of chromosome 1p36 are associated with a high incidence of congenital heart defects (CHDs). The arginine-glutamic acid dipeptide repeats gene (RERE) is located in a critical region for CHD on chromosome 1p36 and encodes a cardiac-expressed nuclear receptor co-regulator. Mutations affecting RERE cause atrial and ventricular septal defects (VSDs) in humans, and RERE-deficient mice also develop VSDs. During cardiac development, mesenchymal cells destined to form part of the atrioventricular (AV) septum are generated when endocardial cells in the AV canal undergo epithelial-to-mesenchymal transition (EMT) and migrate into the space between the endocardium and the myocardium. These newly generated mesenchymal cells then proliferate to fill the developing AV endocardial cushions. Here, we demonstrate that RERE-deficient mouse embryos have reduced numbers of mesenchymal cells in their AV endocardial cushions owing to decreased levels of EMT and mesenchymal cell proliferation. In the endocardium, RERE colocalizes with GATA4, a transcription factor required for normal levels of EMT and mesenchymal cell proliferation. Using a combination of in vivo and in vitro studies, we show that Rere and Gata4 interact genetically in the development of CHDs, RERE positively regulates transcription from the Gata4 promoter and GATA4 levels are reduced in the AV canals of RERE-deficient embryos. Tissue-specific ablation of Rere in the endocardium leads to hypocellularity of the AV endocardial cushions, defective EMT and VSDs, but does not result in decreased GATA4 expression. We conclude that RERE functions in the AV canal to positively regulate the expression of GATA4, and that deficiency of RERE leads to the development of VSDs through its effects on EMT and mesenchymal cell proliferation. However, the cell-autonomous role of RERE in promoting EMT in the endocardium must be mediated by its effects on the expression of proteins other than GATA4. This article has an associated First Person interview with the first author of the paper. Summary: In the developing atrioventricular canal, RERE promotes endothelial-to-mesenchymal transition and mesenchymal cell proliferation by positively regulating Gata4. Tissue-specific ablation of Rere in the endocardium causes ventricular septal defects.
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Affiliation(s)
- Bum Jun Kim
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hitisha P Zaveri
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Valerie K Jordan
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Andres Hernandez-Garcia
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Daron J Jacob
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Diana L Zamora
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Wei Yu
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77004, USA
| | - Robert J Schwartz
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77004, USA
| | - Daryl A Scott
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA .,Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
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12
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Tang VT, Arscott P, Helms AS, Day SM. Whole-Exome Sequencing Reveals
GATA4
and
PTEN
Mutations as a Potential Digenic Cause of Left Ventricular Noncompaction. CIRCULATION-GENOMIC AND PRECISION MEDICINE 2018; 11:e001966. [DOI: 10.1161/circgen.117.001966] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Vi T. Tang
- From the Departments of Molecular and Integrative Physiology (V.T.T., S.M.D.) and Internal Medicine (P.A., A.S.H., S.M.D.), University of Michigan, Ann Arbor
| | - Patricia Arscott
- From the Departments of Molecular and Integrative Physiology (V.T.T., S.M.D.) and Internal Medicine (P.A., A.S.H., S.M.D.), University of Michigan, Ann Arbor
| | - Adam S. Helms
- From the Departments of Molecular and Integrative Physiology (V.T.T., S.M.D.) and Internal Medicine (P.A., A.S.H., S.M.D.), University of Michigan, Ann Arbor
| | - Sharlene M. Day
- From the Departments of Molecular and Integrative Physiology (V.T.T., S.M.D.) and Internal Medicine (P.A., A.S.H., S.M.D.), University of Michigan, Ann Arbor
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13
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Martinez de LaPiscina I, de Mingo C, Riedl S, Rodriguez A, Pandey AV, Fernández-Cancio M, Camats N, Sinclair A, Castaño L, Audi L, Flück CE. GATA4 Variants in Individuals With a 46,XY Disorder of Sex Development (DSD) May or May Not Be Associated With Cardiac Defects Depending on Second Hits in Other DSD Genes. Front Endocrinol (Lausanne) 2018; 9:142. [PMID: 29670578 PMCID: PMC5893726 DOI: 10.3389/fendo.2018.00142] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/16/2018] [Indexed: 12/18/2022] Open
Abstract
Disorders of sex development (DSD) consist of a wide range of conditions involving numerous genes. Nevertheless, about half of 46,XY individuals remain genetically unsolved. GATA4 gene variants, mainly related to congenital heart defects (CHD), have also been recently associated with 46,XY DSD. In this study, we characterized three individuals presenting with 46,XY DSD with or without CHD and GATA4 variants in order to understand the phenotypical variability. We studied one patient presenting CHD and 46,XY gonadal dysgenesis, and two patients with a history of genetically unsolved 46,XY DSD, also known as male primary hypogonadism. Mutation analysis was carried out by candidate gene approach or targeted gene panel sequencing. Functional activity of GATA4 variants was tested in vitro on the CYP17 promoter involved in sex development using JEG3 cells. We found two novel and one previously described GATA4 variants located in the N-terminal zinc finger domain of the protein. Cys238Arg variant lost transcriptional activity on the CYP17 promoter reporter, while Trp228Cys and Pro226Leu behaved similar to wild type. These results were in line with bioinformatics simulation studies. Additional DSD variations, in the LRP4 and LHCGR genes, respectively, were identified in the two 46,XY individuals without CHD. Overall, our study shows that human GATA4 mutations identified in patients with 46,XY DSD may or may not be associated with CHD. Possible explanations for phenotypical variability may comprise incomplete penetrance, variable sensitivity of partner genes, and oligogenic mechanisms.
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Affiliation(s)
- Idoia Martinez de LaPiscina
- Endocrinology and Diabetes Research Group, BioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Pediatric Endocrinology, Diabetology and Metabolism, Department of BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Carmen de Mingo
- Pediatric Endocrinology, La Fe Pediatric University Hospital, Valencia, Spain
| | - Stefan Riedl
- Division of Pediatric Pulmology, Allergology, and Endocrinology, St. Anna Children’s Hospital, Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Amaia Rodriguez
- Pediatric Endocrinology Section, Cruces University Hospital, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV/EHU, Barakaldo, Spain
| | - Amit V. Pandey
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Pediatric Endocrinology, Diabetology and Metabolism, Department of BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Mónica Fernández-Cancio
- Growth and Development Research, Pediatric Endocrinology Unit, Vall d’Hebron Research Institute (VHIR), CIBERER, Instituto de Salud Carlos III, Barcelona, Spain
| | - Nuria Camats
- Growth and Development Research, Pediatric Endocrinology Unit, Vall d’Hebron Research Institute (VHIR), CIBERER, Instituto de Salud Carlos III, Barcelona, Spain
| | - Andrew Sinclair
- Department of Paediatrics, Murdoch Children’s Research Institute, University of Melbourne, The Royal Children’s Hospital, Melbourne, VIC, Australia
| | - Luis Castaño
- Endocrinology and Diabetes Research Group, BioCruces Health Research Institute, Cruces University Hospital, CIBERDEM, CIBERER, UPV-EHU, Barakaldo, Spain
- Pediatric Endocrinology Section, Cruces University Hospital, BioCruces Health Research Institute, CIBERDEM, CIBERER, UPV/EHU, Barakaldo, Spain
| | - Laura Audi
- Growth and Development Research, Pediatric Endocrinology Unit, Vall d’Hebron Research Institute (VHIR), CIBERER, Instituto de Salud Carlos III, Barcelona, Spain
| | - Christa E. Flück
- Pediatric Endocrinology, Diabetology and Metabolism, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Pediatric Endocrinology, Diabetology and Metabolism, Department of BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- *Correspondence: Christa E. Flück,
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14
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Papadopoulou Z, Papoulidis I, Sifakis S, Markopoulos G, Vetro A, Vlaikou AM, Ziegler M, Liehr T, Thomaidis L, Zuffardi O, Syrrou M, George K, Manolakos E. Partial monosomy 8p and trisomy 16q in two children with developmental delay detected by array comparative genomic hybridization. Mol Med Rep 2017; 16:8808-8818. [PMID: 29039589 PMCID: PMC5779959 DOI: 10.3892/mmr.2017.7760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/07/2017] [Indexed: 11/06/2022] Open
Abstract
Two cases of liveborn unrelated children with developmental delay and overlapping unbalanced translocations der(8)t(8;16)(p23.2;q23.3) and der (8)t(8;16)(p23.1;q23.1), leading to partial monosomy 8p and partial trisomy 16q, are reported in the present study. The first patient was a 10-year-old boy with mild developmental delay and minor congenital anomalies (borderline microcephaly, clinodactyly, hypertelorism, epicanthus, mild systolic murmur and kidney reflux). The second patient was a 3 year-old girl with developmental delay, gross motor milestone delay and dysmorphic features. Array-comparative genomic hybridization analysis revealed that partial chromosome 8p monosomy extended from 8p23.2 to 8pter (4.8 Mb) in Patient 1 and from 8p23.1 to 8pter (9.5 Mb) in Patient 2, and partial chromosome 16 trisomy extended from 16q23.3 to 16qter (5.6 Mb) in Patient 1 and from 16q23.1 to 16qter (11.7 Mb) in Patient 2. The mechanism of appearance of the rearrangement in association with the genes involved and the architecture of the region is discussed.
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Affiliation(s)
- Zoe Papadopoulou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Ioannis Papoulidis
- Access To Genome, Laboratory of Genetics, Athens 11528‑Thessaloniki 55134, Greece
| | - Stavros Sifakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, Heraklion 71201, Greece
| | - Georgios Markopoulos
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Annalisa Vetro
- Department of Molecular Medicine, University of Pavia, I‑27100 Pavia, Italy
| | - Angeliki-Maria Vlaikou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Monica Ziegler
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, D‑07743 Jena, Germany
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, D‑07743 Jena, Germany
| | - Loretta Thomaidis
- Developmental Assessment Unit, 2nd Department of Pediatrics, P. & A. Kyriakou Children's Hospital, National and Kapodistrian University of Athens School of Medicine, Athens 11527, Greece
| | - Orsetta Zuffardi
- Department of Molecular Medicine, University of Pavia, I‑27100 Pavia, Italy
| | - Maria Syrrou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Kitsos George
- Department of Ophthalmology, University of Ioannina, Ioannina 45110, Greece
| | - Emmanouil Manolakos
- Access To Genome, Laboratory of Genetics, Athens 11528‑Thessaloniki 55134, Greece
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15
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Yang B, Zhou W, Jiao J, Nielsen JB, Mathis MR, Heydarpour M, Lettre G, Folkersen L, Prakash S, Schurmann C, Fritsche L, Farnum GA, Lin M, Othman M, Hornsby W, Driscoll A, Levasseur A, Thomas M, Farhat L, Dubé MP, Isselbacher EM, Franco-Cereceda A, Guo DC, Bottinger EP, Deeb GM, Booher A, Kheterpal S, Chen YE, Kang HM, Kitzman J, Cordell HJ, Keavney BD, Goodship JA, Ganesh SK, Abecasis G, Eagle KA, Boyle AP, Loos RJF, Eriksson P, Tardif JC, Brummett CM, Milewicz DM, Body SC, Willer CJ. Protein-altering and regulatory genetic variants near GATA4 implicated in bicuspid aortic valve. Nat Commun 2017; 8:15481. [PMID: 28541271 PMCID: PMC5458508 DOI: 10.1038/ncomms15481] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 03/31/2017] [Indexed: 01/09/2023] Open
Abstract
Bicuspid aortic valve (BAV) is a heritable congenital heart defect and an important risk factor for valvulopathy and aortopathy. Here we report a genome-wide association scan of 466 BAV cases and 4,660 age, sex and ethnicity-matched controls with replication in up to 1,326 cases and 8,103 controls. We identify association with a noncoding variant 151 kb from the gene encoding the cardiac-specific transcription factor, GATA4, and near-significance for p.Ser377Gly in GATA4. GATA4 was interrupted by CRISPR-Cas9 in induced pluripotent stem cells from healthy donors. The disruption of GATA4 significantly impaired the transition from endothelial cells into mesenchymal cells, a critical step in heart valve development.
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Affiliation(s)
- Bo Yang
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan 48109, USA
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Wei Zhou
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Jiao Jiao
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Jonas B. Nielsen
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Michael R. Mathis
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Mahyar Heydarpour
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Guillaume Lettre
- Montreal Heart Institute, Montreal, Quebec, Canada HIT 1C8
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada QC H3T 1J4
| | - Lasse Folkersen
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska University Hospital Solna, Karolinska Institutet, Stockholm SE-171 76, Sweden
- Center for Biological Sequence Analysis, Technical University of Denmark, Copenhagen DK-2800, Denmark
| | - Siddharth Prakash
- Department of Internal Medicine, Division of Medical Genetics, University of Texas Health Science Center at Houston McGovern Medical School, Houston, Texas 77030, USA
| | - Claudia Schurmann
- The Charles Bronfman Institute for Personalized Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Lars Fritsche
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109, USA
- Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Gregory A. Farnum
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Maoxuan Lin
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Mohammad Othman
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan 48105, USA
| | - Whitney Hornsby
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Anisa Driscoll
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Alexandra Levasseur
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Marc Thomas
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Linda Farhat
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Marie-Pierre Dubé
- Montreal Heart Institute, Montreal, Quebec, Canada HIT 1C8
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada QC H3T 1J4
| | - Eric M. Isselbacher
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Anders Franco-Cereceda
- Cardiothoracic Surgery Unit, Department of Molecular Medicine and Surgery, Karolinska University Hospital Solna, Karolinska Institutet, Stockholm SE-171 76, Sweden
| | - Dong-chuan Guo
- Department of Internal Medicine, Division of Medical Genetics, University of Texas Health Science Center at Houston McGovern Medical School, Houston, Texas 77030, USA
| | - Erwin P. Bottinger
- The Charles Bronfman Institute for Personalized Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - G. Michael Deeb
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan 48109, USA
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Anna Booher
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Sachin Kheterpal
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Y. Eugene Chen
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan 48109, USA
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Hyun Min Kang
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Jacob Kitzman
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Heather J. Cordell
- Institute of Genetic Medicine, Newcastle University, Newcastle Upon Tyne NE1 3BZ, UK
| | - Bernard D. Keavney
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK
- Manchester Heart Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester M13 9WL, UK
| | - Judith A. Goodship
- Institute of Genetic Medicine, Newcastle University, Newcastle Upon Tyne NE1 3BZ, UK
| | - Santhi K. Ganesh
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Gonçalo Abecasis
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Kim A. Eagle
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Alan P. Boyle
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Ruth J. F. Loos
- The Charles Bronfman Institute for Personalized Medicine, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
- The Mindich Child Health Development Institute, The Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Per Eriksson
- Cardiovascular Medicine Unit, Center for Molecular Medicine, Department of Medicine, Karolinska University Hospital Solna, Karolinska Institutet, Stockholm SE-171 76, Sweden
| | - Jean-Claude Tardif
- Montreal Heart Institute, Montreal, Quebec, Canada HIT 1C8
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada QC H3T 1J4
| | - Chad M. Brummett
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Dianna M. Milewicz
- Department of Internal Medicine, Division of Medical Genetics, University of Texas Health Science Center at Houston McGovern Medical School, Houston, Texas 77030, USA
| | - Simon C. Body
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Cristen J. Willer
- Frankel Cardiovascular Center, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, USA
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan 48109, USA
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16
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Borkar Y, Nayak K, Shetty RK, Bhat G, Moka R. Gerbode Ventricular Septal Defect -A Rare Cardiac Anomaly Associated with Genetic Variants in Indian Population- A Case Series. J Clin Diagn Res 2017; 11:GR01-GR04. [PMID: 28511407 DOI: 10.7860/jcdr/2017/23820.9549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/17/2016] [Indexed: 11/24/2022]
Abstract
Gerbode defects are rare Ventricular Septal Defects (VSD) constituting approximately one percent cases of congenital heart diseases. The genetic predispositions towards the Gerbode Defect (GD) have remained an unexplored area of study till date. We investigated the genotype-phenotype correlation in patients with Gerbode VSD. Molecular genetic study on Sanger sequencing and subsequent data analysis showed that the contributing sequence variations in the NKX2-5, GATA4 and TBX5 gene lies in one of the highly conserved regions and this region is responsible for encoding a functional protein. The resulting genotype variation may be responsible for causing the diseased phenotype known as GD.
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Affiliation(s)
- Yashvanthi Borkar
- PhD Scholar, Department of Cellular and Molecular Biology, School of Life Sciences, Manipal University, Manipal, Karnataka, India
| | - Krishnananda Nayak
- Assistant Professor and Head, Department of Cardiovascular Therapy, School of Allied Health Sciences, Manipal University, Manipal, Karnataka, India
| | - Ranjan K Shetty
- Professor and Head, Department of Cardiology, Kasturba Medical College, Manipal, Karnataka, India
| | - Gopalakrishna Bhat
- Professor, Department of Biotechnology, School of Life Sciences, Manipal University, Manipal, Karnataka, India
| | - Rajasekhar Moka
- Associate Professor, Department of Cellular and Molecular Biology, School of Life Sciences, Manipal University, Manipal, Karnataka, India
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17
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Wang J, Zhang DF, Sun YM, Li RG, Qiu XB, Qu XK, Liu X, Fang WY, Yang YQ. NKX2-6 mutation predisposes to familial atrial fibrillation. Int J Mol Med 2014; 34:1581-90. [PMID: 25319568 DOI: 10.3892/ijmm.2014.1971] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 10/10/2014] [Indexed: 12/29/2022] Open
Abstract
Atrial fibrillation (AF) is the most common form of sustained cardiac arrhythmia and is associated with substantially increased morbidity and mortality rates. Aggregating evidence demonstrates that genetic defects are involved in the pathogenesis of AF and a number of AF-associated genes have been identified. Nevertheless, AF is a genetically heterogeneous disorder and the genetic components underpinning AF in an overwhelming majority of patients remain unclear. In this study, the entire coding exons and splice junction sites of the NK2 homeobox 6 (NKX2-6) gene, which encodes a homeodomain transcription factor important for cardiovascular development, were sequenced in 150 unrelated patients with lone AF, and a novel heterozygous NKX2-6 mutation, p.Q175H, was identified in an index patient. Genetic analysis of the available family members of the mutation carrier revealed that the mutation co-segregated with AF transmitted in an autosomal dominant pattern. The missense mutation was absent in the 200 unrelated ethnically matched healthy individuals used as controls and the altered amino acid was completely conserved evolutionarily among species. Due to unknown transcriptional targets of NKX2-6, the functional characteristics of the mutation as regards transcriptional activity were analyzed using NKX2-5 as a surrogate. Alignment between human NKX2-6 and NKX2-5 proteins displayed that the Q175H-mutant NKX2-6 was equivalent to the Q181H-mutant NKX2-5, and the introduction of Q181H into NKX2-5 significantly decreased its transcriptional activity at the atrial natriuretic factor promoter. The present study firstly associates genetically defective NKX2-6 with enhanced susceptibility to AF, providing novel insight into the molecular mechanisms underlying AF and suggesting potential strategies for the antenatal prophylaxis and personalized treatment of AF.
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Affiliation(s)
- Jun Wang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Dai-Fu Zhang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Yu-Min Sun
- Department of Cardiology, Jing-An District Central Hospital, Shanghai 200040, P.R. China
| | - Ruo-Gu Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xin-Kai Qu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xu Liu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Wei-Yi Fang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
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18
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Prendiville T, Jay PY, Pu WT. Insights into the genetic structure of congenital heart disease from human and murine studies on monogenic disorders. Cold Spring Harb Perspect Med 2014; 4:a013946. [PMID: 25274754 PMCID: PMC4200204 DOI: 10.1101/cshperspect.a013946] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Study of monogenic congenital heart disease (CHD) has provided entry points to gain new understanding of heart development and the molecular pathogenesis of CHD. In this review, we discuss monogenic CHD caused by mutations of the cardiac transcription factor genes NKX2-5 and GATA4. Detailed investigation of these genes in mice and humans has expanded our understanding of heart development, shedding light on the complex genetic and environmental factors that influence expression and penetrance of CHD gene mutations.
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Affiliation(s)
- Terence Prendiville
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts 02115
| | - Patrick Y Jay
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - William T Pu
- Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts 02115 Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts 02138
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19
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Prevalence and spectrum of Nkx2.6 mutations in patients with congenital heart disease. Eur J Med Genet 2014; 57:579-86. [PMID: 25195019 DOI: 10.1016/j.ejmg.2014.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/18/2014] [Indexed: 02/07/2023]
Abstract
Congenital heart disease (CHD) is the most common form of birth defect and is the most prevalent non-infectious cause of infant death. A growing body of evidence documents that genetic defects are involved in the pathogenesis of CHD. However, CHD is a genetically heterogeneous disease and the genetic basis underpinning CHD in an overwhelming majority of patients remain unclear. In this study, the coding exons and flanking introns of the Nkx2.6 gene, which codes for a homeodomain-containing transcription factor important for normal cardiovascular development, were sequenced in 320 unrelated patients with CHD, and two novel heterozygous Nkx2.6 mutations, p.V176M and p.K177X, were identified in two unrelated patients with CHD, respectively, including a patient with tetralogy of Fallot and a patient with double outlet of right ventricle and ventricular septal defect. The mutations were absent in 400 control chromosomes and the altered amino acids were completely conserved evolutionarily across species. Due to unknown transcriptional targets of Nkx2.6, the functional consequences of the identified mutations at transcriptional activity were evaluated by using Nkx2.5 as a surrogate. Alignment between human Nkx2.6 and Nkx2.5 proteins showed that V176M-mutant Nkx2.6 was equivalent to V182M-mutant Nkx2.5 and K177X-mutant Nkx2.6 was equal to K183X-mutant Nkx2.5, and introduction of V182M or K183X into Nkx2.5 significantly diminished its transcriptional activating function when compared with its wild-type counterpart. To our knowledge, this is the first report on the association of Nkx2.6 loss-of-function mutation with increased susceptibility to tetralogy of Fallot or double outlet of right ventricle and ventricular septal defect, providing novel insight into the molecular mechanism of CHD.
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20
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Shi LM, Tao JW, Qiu XB, Wang J, Yuan F, Xu L, Liu H, Li RG, Xu YJ, Wang Q, Zheng HZ, Li X, Wang XZ, Zhang M, Qu XK, Yang YQ. GATA5 loss-of-function mutations associated with congenital bicuspid aortic valve. Int J Mol Med 2014; 33:1219-26. [PMID: 24638895 DOI: 10.3892/ijmm.2014.1700] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 03/11/2014] [Indexed: 11/05/2022] Open
Abstract
Bicuspid aortic valve (BAV) is the most common form of congenital cardiovascular defect in humans worldwide and is responsible for substantial morbidity and mortality. Accumulating evidence has demonstated that genetic risk factors are involved in the pathogenesis of BAV. However, BAV is genetically heterogeneous and the genetic basis underlying BAV in a large number of patients remains unknown. In the present study, the coding regions and splice junction sites of the GATA5 gene, which codes for a zinc-finger transcription factor crucial for the normal development of the aortic valve, was sequenced initially in 110 unrelated patients with BAV. The available relatives of the mutation carriers and 200 unrelated healthy individuals used as controls were subsequently genotyped for GATA5. The functional effect of the mutations was characterized by using a luciferase reporter assay system. As a result, two novel heterozygous GATA5 mutations, p.Y16D and p.T252P, were identified in two families with autosomal dominant inheritance of BAV, respectively. The variations were absent in 400 control chromosomes and the altered amino acids were completely conserved evolutionarily. Functional assays revealed that the two GATA5 mutants were associated with significantly reduced transcriptional activity compared with their wild-type counterpart. To the best of our knowledge, this is the first study on the association of GATA5 loss-of-function mutations with enhanced susceptibility to BAV, providing novel insight into the molecular mechanism involved in human BAV and suggesting a potential role for the early prophylaxis and personalized treatment of this common congenital heart disease.
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Affiliation(s)
- Lin-Mei Shi
- Department of Ultrasonics, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, P.R. China
| | - Ju-Wei Tao
- Department of Ultrasonics, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, P.R. China
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Juan Wang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Fang Yuan
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Lei Xu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Hua Liu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Ruo-Gu Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Qian Wang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Hong-Zhen Zheng
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xin Li
- Department of Extracorporeal Circulation, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xiao-Zhou Wang
- Department of Cardiac Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Min Zhang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Xin-Kai Qu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
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21
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Huang RT, Xue S, Xu YJ, Zhou M, Yang YQ. Somatic GATA5 mutations in sporadic tetralogy of Fallot. Int J Mol Med 2014; 33:1227-35. [PMID: 24573614 DOI: 10.3892/ijmm.2014.1674] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 02/11/2014] [Indexed: 11/06/2022] Open
Abstract
Tetralogy of Fallot (TOF) is the most common form of cyanotic congenital heart disease, with high morbidity and mortality rates. Accumulating evidence has demonstrated that genetic defects play an important role in the pathogenesis of TOF. However, the molecular basis of TOF in the majority of patients remains to be determined. In the present study, sequence analysis of the coding exons and exon-intron boundaries of GATA5, a gene encoding a zinc finger‑containing transcriptional factor crucial for cardiogenesis, was performed on genomic DNA isolated from resected cardiac tissue and matched blood samples of 85 unrelated patients who underwent surgical repair of TOF. Genotyping was performed on the cardiac tissue and matched blood samples from 63 unrelated patients who underwent cardiac valve replacement due to rheumatic heart disease as well as the blood samples obtained from 200 unrelated healthy individuals. The functional effect of the mutations was evaluated by using a luciferase reporter assay system. As a result, the novel heterozygous GATA5 mutations, p.D203E and p.Y208X, were found in the cardiac tissues of two TOF patients, respectively. There were no mutations in the cardiac tissues obtained from 63 patients with rheumatic heart disease nor in the blood samples obtained from the 348 subjects. Functional analysis revealed that the GATA5 mutants were consistently associated with significantly decreased transcriptional activity compared with their wild-type counterpart. Thus, results of this study showed an association of somatic GATA5 mutations with TOF, providing further insight into the underlying molecular mechanism of TOF.
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Affiliation(s)
- Ri-Tai Huang
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Song Xue
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Min Zhou
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
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22
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Zhao L, Xu JH, Xu WJ, Yu H, Wang Q, Zheng HZ, Jiang WF, Jiang JF, Yang YQ. A novel GATA4 loss-of-function mutation responsible for familial dilated cardiomyopathy. Int J Mol Med 2013; 33:654-60. [PMID: 24366163 DOI: 10.3892/ijmm.2013.1600] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 12/20/2013] [Indexed: 11/06/2022] Open
Abstract
Dilated cardiomyopathy (DCM) is the most common form of primary myocardial disorder and is associated with substantial morbidity and mortality. Increasing evidence suggests that genetic risk factors play an important role in the pathogenesis of idiopathic DCM. However, DCM is a genetically heterogeneous disease, and the genetic defects responsible for DCM in an overwhelming majority of cases remain to be identified. In the present study, the entire coding region and the splice junction sites of the GATA4 gene, which encodes a cardiac transcription factor essential for cardiogenesis, were sequenced in 150 unrelated patients with idiopathic DCM. The available relatives of the index patient harboring an identified mutation and 200 unrelated ethnically matched healthy individuals used as controls were genotyped. The functional characteristics of the mutant GATA4 were delineated in contrast to its wild-type counterpart using a luciferase reporter assay system. As a result, a novel heterozygous GATA4 mutation, p.V291L, was identified in a family with DCM inherited in an autosomal dominant pattern, which co-segregated with DCM in the family with complete penetrance. The missense mutation was absent in 400 control chromosomes, and the altered amino acid was completely conserved evolutionarily among species. Functional analysis revealed that the GATA4 mutant was associated with significantly diminished transcriptional activity. The findings expand the mutational spectrum of GATA4 linked to DCM and provide novel insight into the molecular etiology involved in DCM, suggesting the potential implications in the early prophylaxis and allele-specific treatment for this common type of cardiomyopathy.
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Affiliation(s)
- Lan Zhao
- Department of Cardiology, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Jia-Hong Xu
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Wen-Jun Xu
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Hong Yu
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Qian Wang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Hong-Zhen Zheng
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Wei-Feng Jiang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
| | - Jin-Fa Jiang
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, P.R. China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
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23
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Keitges EA, Pasion R, Burnside RD, Mason C, Gonzalez-Ruiz A, Dunn T, Masiello M, Gebbia JA, Fernandez CO, Risheg H. Prenatal diagnosis of two fetuses with deletions of 8p23.1, critical region for congenital diaphragmatic hernia and heart defects. Am J Med Genet A 2013; 161A:1755-8. [DOI: 10.1002/ajmg.a.35965] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 03/14/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Elisabeth A. Keitges
- Department of Cytogenetics; Laboratory Corporation of America/Dynacare; Seattle, Washington
| | - Romela Pasion
- Department of Cytogenetics; Laboratory Corporation of America, Center for Molecular Biology and Pathology; Research Triangle Park, North Carolina
| | - Rachel D. Burnside
- Department of Cytogenetics; Laboratory Corporation of America, Center for Molecular Biology and Pathology; Research Triangle Park, North Carolina
| | - Carla Mason
- Brookwood Maternal Fetal Medicine; Birmingham, Alabama
| | | | - Teresa Dunn
- Medical Genetic Testing Laboratories; CytoGenX Corp.; Stony Brook, New York
| | - Meredith Masiello
- Medical Genetic Testing Laboratories; CytoGenX Corp.; Stony Brook, New York
| | - Joseph A. Gebbia
- Medical Genetic Testing Laboratories; CytoGenX Corp.; Stony Brook, New York
| | | | - Hiba Risheg
- Department of Cytogenetics; Laboratory Corporation of America/Dynacare; Seattle, Washington
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GATA5 loss-of-function mutation responsible for the congenital ventriculoseptal defect. Pediatr Cardiol 2013; 34:504-11. [PMID: 22961344 DOI: 10.1007/s00246-012-0482-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 08/04/2012] [Indexed: 01/12/2023]
Abstract
The ventriculoseptal defect (VSD) is the most common form of congenital heart disease and a leading noninfectious cause of infant mortality. Growing evidence demonstrates that genetic defects are associated with congenital VSD. Nevertheless, VSD is genetically heterogeneous, and the molecular basis for VSD in an overwhelming majority of patients remains unknown. In this study, the whole coding region of GATA5, a gene encoding a zinc finger transcription factor crucial for normal cardiogenesis, was sequenced in 120 unrelated patients with VSD. The available relatives of the patient harboring the identified mutation and 200 unrelated individuals used as controls were subsequently genotyped. The causative potential of a sequence variation was evaluated by MutationTaster, and the functional effect of the mutation was characterized using a luciferase reporter assay system. As a result, a novel heterozygous GATA5 mutation, p.L199V, was identified in a patient with VSD, which was absent in 400 control chromosomes. Genetic analysis of the mutation carrier's available family members showed that the substitution co-segregated with VSD transmitted in an autosomal dominant pattern. The p.L199V variation was automatically predicted to be disease causing, and the functional analysis showed that the GATA5 p.L199V mutant protein was associated with significantly reduced transcriptional activation compared with its wild-type counterpart. To the best of the authors' knowledge, this is the first report on the link of functionally compromised GATA5 to human VSD, suggesting potential implications for the early prophylaxis and personalized treatment of VSD.
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25
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Huang RT, Xue S, Xu YJ, Yang YQ. Somatic mutations in the GATA6 gene underlie sporadic tetralogy of Fallot. Int J Mol Med 2012; 31:51-8. [PMID: 23175051 DOI: 10.3892/ijmm.2012.1188] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 10/22/2012] [Indexed: 11/05/2022] Open
Abstract
Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease associated with significant morbidity and mortality in humans. However, the molecular etiology underlying TOF in most patients remains largely unknown. In the present study, sequence analysis of the GATA6 gene was performed from fresh-frozen cardiac tissues and matched blood samples of 52 unrelated patients who underwent surgical repair of TOF. The cardiac tissues and matched blood specimens from 46 patients who underwent cardiac valve replacement due to rheumatic heart disease and blood samples from 200 healthy individuals as controls were genotyped. The functional characteristics of the mutations were assessed using a luciferase reporter assay system. Based on the results, two novel heterozygous GATA6 mutations, p.G367X and p.G394C, were identified in the cardiac tissues of 2 TOF patients, respectively. No mutations were found in the cardiac tissues from 46 patients with rheumatic heart disease and in the blood samples from the 298 participants. Functional analysis demonstrated that the GATA6 mutants were consistently associated with significantly reduced transcriptional activation compared with their wild-type counterpart. This is the first report on the link of somatic GATA6 mutation to TOF, providing novel insight into the molecular mechanism involved in TOF.
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Affiliation(s)
- Ri-Tai Huang
- Department of Cardiothoracic Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, PR China
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26
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Wang J, Luo XJ, Xin YF, Liu Y, Liu ZM, Wang Q, Li RG, Fang WY, Wang XZ, Yang YQ. Novel GATA6 mutations associated with congenital ventricular septal defect or tetralogy of fallot. DNA Cell Biol 2012; 31:1610-7. [PMID: 23020118 DOI: 10.1089/dna.2012.1814] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Congenital heart disease (CHD) is the most common form of developmental malformation and is the leading noninfectious cause of infant mortality. Emerging evidence indicates that genetic defects are involved in the pathogenesis of CHD. Nevertheless, CHD is genetically heterogeneous, and the molecular basis for CHD in a majority of patients remains unknown. In this study, the whole coding region of GATA6, a gene encoding a zinc-finger transcription factor crucial for normal cardiogenesis, was sequenced in 380 unrelated patients with CHD. The relatives of the index patients harboring the identified mutations and 200 unrelated control individuals were subsequently genotyped. The functional effect of the mutations was characterized using a luciferase reporter assay system. As a result, two novel heterozygous GATA6 mutations, p.D404Y and p.E460X, were identified in two families with ventricular septal defect and tetralogy of Fallot, respectively. The mutations co-segregated with CHD in the families with complete penetrance, and were absent in 400 control chromosomes. Functional analysis demonstrated that the mutated GATA6 proteins were associated with significantly decreased transactivational activity in comparison with their wild-type counterpart. These findings provide novel insight into the molecular mechanism implicated in CHD, suggesting potential implications for the early prophylaxis and personalized treatment of CHD.
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Affiliation(s)
- Juan Wang
- Department of Cardiovascular Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
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