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Chaithra S, Agarwala S, Ramachandra NB. High-risk genes involved in common septal defects of congenital heart disease. Gene 2022; 840:146745. [PMID: 35863714 DOI: 10.1016/j.gene.2022.146745] [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: 12/13/2021] [Revised: 04/21/2022] [Accepted: 07/14/2022] [Indexed: 11/04/2022]
Abstract
The septation defect is one of the main categories of congenital heart disease (CHD). They can affect the septation of the atria leading to atrial septal defect (ASD), septation of ventricles leading to ventricular septal defect (VSD), and formation of the central part of the heart leading to atrioventricular septal defect (AVSD). Disruption of critical genetic factors involved in the proper development of the heart structure leads to CHD manifestation. Because of this, to identify the high-risk genes involved in common septal defects, a comprehensive search of the literature with the help of databases and the WebGestalt analysis tool was performed. The high-risk genes identified in the analysis were checked in 16 Indian whole-exome sequenced samples, including 13 VSD and three Tetralogy of Fallot for in silico validation. This data revealed three variations in GATA4, i.e., c.C1223A at exon 6: c.C602A and c.C1220A at exon 7; and one variation in MYH6, i.e., c.G3883C at exon 28 in two VSD cases. This study supports previously published studies that suggested GATA4 and MYH6 as the high-risk genes responsible for septal defects. Thus, this study contributes to a better understanding of the genes involved in heart development by identifying the high-risk genes and interacting proteins in the pathway.
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Affiliation(s)
- S Chaithra
- Department of Studies in Genetics and Genomics, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - Swati Agarwala
- Department of Studies in Genetics and Genomics, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - N B Ramachandra
- Department of Studies in Genetics and Genomics, University of Mysore, Manasagangotri, Mysuru 570 006, India.
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Maternal air pollution exposure and neonatal congenital heart disease: A multi-city cross-sectional study in eastern China. Int J Hyg Environ Health 2021; 240:113898. [PMID: 34875582 DOI: 10.1016/j.ijheh.2021.113898] [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: 09/07/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To examine the association between air pollution and neonatal congenital heart disease (CHD), and evaluate the cumulative burden of CHD attributed to above certain level for ambient air pollution exposure. METHODS We identified newborns who were diagnosed as CHD by echocardiography in Network Platform for Congenital Heart Disease (NPCHD) from January 2019 to December 2020 in 11 cities eastern China. The exposure lag response relationship between air pollutants (PM2.5, PM10, SO2, NO2, CO, and O3) concentration and CHDs was calculated by the distributed lag nonlinear model (DLNM). We further calculated the cumulative risk ratios (CRRs) of each air pollutant above reference concentrations on CHDs. RESULTS A total of 5904 CHDs from 983, 523 newborns were enrolled in this study. A 10 μg/m3 increase in PM2.5, PM10, SO2, NO2, CO and O3 exposure was associated with an increased risk of higher CHD incident RR = 1.025, 95% CI: 1.016-1.038 for PM2.5 in the third trimester, RR = 1.001, 95% CI: 1.000-1.002 for PM10 in the third trimester, 1.020, 95%CI: 1.004-1.036 for NO2 in the third trimester, RR = 1.001, 95%CI: 1.000-1.002 for O3 in the first trimester, all P value < 0.05). Cumulative effect curves of PM2.5, PM10, SO2, NO2, CO, and O3 were observed as sub-linear with a maximum of 1.876 (95%CI:1.220-2.886), 1.973 (95%CI:1.477,2.637), 2.169 (95%CI:1.347-3.493), 2.902 (95%CI:1.859-4.530), 1.398 (95%CI:1.080-1.809), 2.691 (95%CI:1.705-4.248), respectively. Significant associations were observed for air pollutants and CHDs in cities with higher average education years and babies concepted in cold season. CONCLUSIONS Our findings could provide growing evidence regarding the adverse health effects of air pollution on CHD, thereby strengthening the hypothesis that air pollutants have harmful impacts on cardiac development. Further studies are needed to verify the associations.
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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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Massadeh S, Albeladi M, Albesher N, Alhabshan F, Kampe KD, Chaikhouni F, Kabbani MS, Beetz C, Alaamery M. Novel Autosomal Recessive Splice-Altering Variant in PRKD1 Is Associated with Congenital Heart Disease. Genes (Basel) 2021; 12:genes12050612. [PMID: 33919081 PMCID: PMC8143129 DOI: 10.3390/genes12050612] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/14/2021] [Accepted: 04/18/2021] [Indexed: 12/13/2022] Open
Abstract
Congenital heart defects (CHDs) are the most common types of birth defects, and global incidence of CHDs is on the rise. Despite the prevalence of CHDs, the genetic determinants of the defects are still in the process of being identified. Herein, we report a consanguineous Saudi family with three CHD affected daughters. We used whole exome sequencing (WES) to investigate the genetic cause of CHDs in the affected daughters. We found that all affected individuals were homozygous for a novel splice-altering variant (NM_001330069.1: c.265-1G>T) of PRKD1, which encodes a calcium/calmodulin-dependent protein kinase in the heart. The homozygous variant was found in the affected patients with Pulmonary Stenosis (PS), Truncus Arteriosis (TA), and Atrial Septal Defect (ASD). Based on the family’s pedigree, the variant acts in an autosomal recessive manner, which makes it the second autosomal recessive variant of PRKD1 to be identified with a link to CHDs, while all other previously described variants act dominantly. Interestingly, the father of the affected daughters was also homozygous for the variant, though he was asymptomatic of CHDs himself. Since both of his sisters had CHDs as well, this raises the possibility that the novel PRKD1 variant may undergo autosomal recessive inheritance mode with gender limitation. This finding confirms that CHD can be associated with both dominant and recessive mutations of the PRKD1 gene, and it provides a new insight to genotype–phenotype association between PRKD1 and CHDs. To our knowledge, this is the first report of this specific PRKD1 mutation associated with CHDs.
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Affiliation(s)
- Salam Massadeh
- Developmental Medicine Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard- Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia; (S.M.); (M.A.); (N.A.)
- KACST-BWH Centre of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
- Saudi Human Genome Project (SHGP), King Abdulaziz City for Science and Technology (KACST), Satellite Lab at King Abdulaziz Medical City (KAMC), Ministry of National Guard Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia
| | - Maha Albeladi
- Developmental Medicine Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard- Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia; (S.M.); (M.A.); (N.A.)
- KACST-BWH Centre of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Nour Albesher
- Developmental Medicine Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard- Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia; (S.M.); (M.A.); (N.A.)
- KACST-BWH Centre of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Fahad Alhabshan
- Department of Cardiac Sciences, Ministry of the National Guard—Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11481, Saudi Arabia; (F.A.); (F.C.); (M.S.K.)
| | | | - Farah Chaikhouni
- Department of Cardiac Sciences, Ministry of the National Guard—Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11481, Saudi Arabia; (F.A.); (F.C.); (M.S.K.)
| | - Mohamed S. Kabbani
- Department of Cardiac Sciences, Ministry of the National Guard—Health Affairs, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, Riyadh 11481, Saudi Arabia; (F.A.); (F.C.); (M.S.K.)
| | | | - Manal Alaamery
- Developmental Medicine Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard- Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia; (S.M.); (M.A.); (N.A.)
- KACST-BWH Centre of Excellence for Biomedicine, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
- Saudi Human Genome Project (SHGP), King Abdulaziz City for Science and Technology (KACST), Satellite Lab at King Abdulaziz Medical City (KAMC), Ministry of National Guard Health Affairs (MNG-HA), Riyadh 11481, Saudi Arabia
- Correspondence:
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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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Soliman H, Rossi FMV. Cardiac fibroblast diversity in health and disease. Matrix Biol 2020; 91-92:75-91. [PMID: 32446910 DOI: 10.1016/j.matbio.2020.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 12/20/2022]
Abstract
The cardiac stroma plays essential roles in health and following cardiac damage. The major player of the stroma with respect to extracellular matrix deposition, maintenance and remodeling is the poorly defined fibroblast. It has long been recognized that there is considerable variability to the fibroblast phenotype. With the advent of new, high throughput analytical methods our understanding and appreciation of this heterogeneity has grown dramatically. This review aims to explore the diversity of cardiac fibroblasts and highlights new insights into the diverse nature of these cells and their progenitors as revealed by single cell sequencing and fate mapping studies. We propose that at least in part the observed heterogeneity is related to the existence of a differentiation cascade within stromal cells. Beyond in-organ heterogeneity, we also discuss how the stromal response to damage differs between non-regenerating organs such as the heart and regenerating organs such as skeletal muscle. In exploring possible causes for these differences, we outline that although fibrogenic cells from different organs overlap in many properties, they still possess organ-specific transcriptional signatures and differentiation biases that make them functionally distinct.
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Affiliation(s)
- Hesham Soliman
- Biomedical Research Centre, University of British Columbia, Vancouver, Canada; School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T1Z3, Canada; Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Fabio M V Rossi
- Biomedical Research Centre, University of British Columbia, Vancouver, Canada; School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T1Z3, Canada.
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Congenital heart diseases: genetics, non-inherited risk factors, and signaling pathways. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-0050-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Abstract
Background
Congenital heart diseases (CHDs) are the most common congenital anomalies with an estimated prevalence of 8 in 1000 live births. CHDs occur as a result of abnormal embryogenesis of the heart. Congenital heart diseases are associated with significant mortality and morbidity. The damage of the heart is irreversible due to a lack of regeneration potential, and usually, the patients may require surgical intervention. Studying the developmental biology of the heart is essential not only in understanding the mechanisms and pathogenesis of congenital heart diseases but also in providing us with insight towards developing new preventive and treatment methods.
Main body
The etiology of congenital heart diseases is still elusive. Both genetic and environmental factors have been implicated to play a role in the pathogenesis of the diseases. Recently, cardiac transcription factors, cardiac-specific genes, and signaling pathways, which are responsible for early cardiac morphogenesis have been extensively studied in both human and animal experiments but leave much to be desired. The discovery of novel genetic methods such as next generation sequencing and chromosomal microarrays have led to further study the genes, non-coding RNAs and subtle chromosomal changes, elucidating their implications to the etiology of congenital heart diseases. Studies have also implicated non-hereditary risk factors such as rubella infection, teratogens, maternal age, diabetes mellitus, and abnormal hemodynamics in causing CHDs.
These etiological factors raise questions on multifactorial etiology of CHDs. It is therefore important to endeavor in research based on finding the causes of CHDs. Finding causative factors will enable us to plan intervention strategies and mitigate the consequences associated with CHDs. This review, therefore, puts forward the genetic and non-genetic causes of congenital heart diseases. Besides, it discusses crucial signaling pathways which are involved in early cardiac morphogenesis. Consequently, we aim to consolidate our knowledge on multifactorial causes of CHDs so as to pave a way for further research regarding CHDs.
Conclusion
The multifactorial etiology of congenital heart diseases gives us a challenge to explicitly establishing specific causative factors and therefore plan intervention strategies. More well-designed studies and the use of novel genetic technologies could be the way through the discovery of etiological factors implicated in the pathogenesis of congenital heart diseases.
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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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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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Guo B, Xiao J, Li L, Wang S, Wang L, Liu S. Clinical study of prenatal ultrasonography combined with T‑box transcription factor 1 as a biomarker for the diagnosis of congenital heart disease. Mol Med Rep 2018; 17:7346-7350. [PMID: 29568912 DOI: 10.3892/mmr.2018.8742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 05/18/2017] [Indexed: 11/05/2022] Open
Abstract
Congenital heart disease (CHD) seriously threatens fetal health. Therefore, prenatal examination to detect deformity is extremely important. The present study aimed to investigate the clinical application value of prenatal ultrasonography combined with molecular biology methods in the diagnosis of fetal CHD. A total of 1,000 pregnant women who had received fetal ultrasonography to examine fetal CHD were enrolled. Ultrasounds were performed for fetal heart examination and diagnosis, mainly on fetal heart position, size, structure and function, and heart valve morphology and function. These indexes were tested again 2 weeks after birth. Blood samples were collected from pregnant women with fetal CHD. Polymerase chain reaction (PCR) and western blotting were performed to detect the association between heart development and T‑box transcription factor 1 (TBX1) expression. The results revealed that 10 fetuses had CHD (1%), of which ultrasound detected 9 cases. The specificity and sensitivity of ultrasounds were 100 and 90%, respectively. Of the 9 cases were identified by prenatal ultrasound screening, including 2 cases had endocardial cushion defect, 1 case had pulmonary stenosis combined with right ventricular dysplasia, 1 case had tetralogy of Fallot combined with a cleft lip and palate, 2 cases had ventricular septal defect, 1 case had a single ventricle defect, 1 case had Ebstein and 1 case had a triatrial heart. One case of ventricular septal defect was missed prior to delivery. PCR and western blotting demonstrated that TBX1 expression may be associated with CHD. Therefore, ultrasonography combined with laboratory examinations represent efficient, economic and safe methods for fetal CHD detection. These methods may be significant to improve the rate of CHD diagnosis, and require further investigation.
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Affiliation(s)
- Bingcheng Guo
- Department of Ultrasound, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Jing Xiao
- Department of Ultrasound, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Long Li
- Department of Ultrasound, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Shuanglong Wang
- Department of Ultrasound, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Lijuan Wang
- Department of Ultrasound, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Shuyong Liu
- Department of Hand and Foot Surgery, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
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Soheili F, Jalili Z, Rahbar M, Khatooni Z, Mashayekhi A, Jafari H. Novel mutation of GATA4 gene in Kurdish population of Iran with nonsyndromic congenital heart septals defects. CONGENIT HEART DIS 2018; 13:295-304. [PMID: 29377543 DOI: 10.1111/chd.12571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 12/07/2017] [Accepted: 12/10/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND The mutations in GATA4 gene induce inherited atrial and ventricular septation defects, which is the most frequent forms of congenital heart defects (CHDs) constituting about half of all cases. METHOD We have performed High resolution melting (HRM) mutation scanning of GATA4 coding exons of nonsyndrome 100 patients as a case group including 39 atrial septal defects (ASD), 57 ventricular septal defects (VSD) and four patients with both above defects and 50 healthy individuals as a control group. Our samples are categorized according to their HRM graph. The genome sequencing has been done for 15 control samples and 25 samples of patients whose HRM analysis were similar to healthy subjects for each exon. The PolyPhen-2 and MUpro have been used to determine the causative possibility and structural stability prediction of GATA4 sequence variation. RESULTS The HRM curve analysis exhibit that 21 patients and 3 normal samples have deviated curves for GATA4 coding exons. Sequencing analysis has revealed 12 nonsynonymous mutations while all of them resulted in stability structure of protein 10 of them are pathogenic and 2 of them are benign. Also we found two nucleotide deletions which one of them was novel and one new indel mutation resulting in frame shift mutation, and 4 synonymous variations or polymorphism in 6 of patients and 3 of normal individuals. Six or about 50% of these nonsynonymous mutations have not been previously reported. CONCLUSION Our results show that there is a spectrum of GATA4 mutations resulting in septal defects.
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Affiliation(s)
- Fariborz Soheili
- Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, IR, Iran.,Department of Marine Biology, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, IR, Iran
| | - Zahra Jalili
- Department of Cardiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, IR, Iran
| | - Mahtab Rahbar
- Department of Pathology, Faculty of Medicine, Iran Medical University of Medical Science, Tehran, IR, Iran
| | - Zahed Khatooni
- Cellular and Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, IR, Iran
| | - Amir Mashayekhi
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University Tehran, IR, Iran
| | - Hossein Jafari
- Department of Statistic and Basic Science, Chabahar Maritime University, Chabahar, IR, Iran
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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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Giacomelli E, Bellin M, Sala L, van Meer BJ, Tertoolen LGJ, Orlova VV, Mummery CL. Three-dimensional cardiac microtissues composed of cardiomyocytes and endothelial cells co-differentiated from human pluripotent stem cells. Development 2017; 144:1008-1017. [PMID: 28279973 PMCID: PMC5358113 DOI: 10.1242/dev.143438] [Citation(s) in RCA: 181] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 12/29/2016] [Indexed: 12/14/2022]
Abstract
Cardiomyocytes and endothelial cells in the heart are in close proximity and in constant dialogue. Endothelium regulates the size of the heart, supplies oxygen to the myocardium and secretes factors that support cardiomyocyte function. Robust and predictive cardiac disease models that faithfully recapitulate native human physiology in vitro would therefore ideally incorporate this cardiomyocyte-endothelium crosstalk. Here, we have generated and characterized human cardiac microtissues in vitro that integrate both cell types in complex 3D structures. We established conditions for simultaneous differentiation of cardiomyocytes and endothelial cells from human pluripotent stem cells following initial cardiac mesoderm induction. The endothelial cells expressed cardiac markers that were also present in primary cardiac microvasculature, suggesting cardiac endothelium identity. These cell populations were further enriched based on surface markers expression, then recombined allowing development of beating 3D structures termed cardiac microtissues. This in vitro model was robustly reproducible in both embryonic and induced pluripotent stem cells. It thus represents an advanced human stem cell-based platform for cardiovascular disease modelling and testing of relevant drugs. Summary: Co-differentiation of endothelial cells and cardiomyocytes from human pluripotent stem cells provides a cardiac microtissue model with potential applications for disease modelling and drug discovery.
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Affiliation(s)
- Elisa Giacomelli
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Milena Bellin
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Luca Sala
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Berend J van Meer
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Leon G J Tertoolen
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Valeria V Orlova
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands
| | - Christine L Mummery
- Department of Anatomy and Embryology, Leiden University Medical Center, Leiden 2333ZC, The Netherlands .,Department of Applied Stem Cell Technologies, University of Twente, Enschede 7500AE, The Netherlands
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14
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Zhang Y, Ai F, Zheng J, Peng B. Associations of GATA4 genetic mutations with the risk of congenital heart disease: A meta-analysis. Medicine (Baltimore) 2017; 96:e6857. [PMID: 28471988 PMCID: PMC5419936 DOI: 10.1097/md.0000000000006857] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND GATA4 gene is a cardiac transcriptional factor playing important role in cardiac formation and development. Three GATA4 gene mutations, 99 G>T, 487 C>T, and 354 A>C, have been reported in congenital heart disease (CHD). Therefore, a meta-analysis was performed to explore the associations between 99 G>T, 487 C>T, or 354 A>C mutations and the risk of CHD. METHODS We searched the relevant studies in electronic databases, including ISI Science Citation Index, Embase, PubMed, CNKI, and Wan fang, from January 2006 to March 2016. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to estimate the associations between 99 G>T, 487 C>T, or 354 A>C mutations and the risk of CHD. RESULTS A total of 11 studies including 2878 CHD cases and 3339 controls were evaluated. There was no significant association between GATA4 99 G>T (OR = 1.22, 95% CI = 0.74-2.01, P = .43) or 487 C>T (OR = 1.16, 95% CI = 0.48-2.78, P = .74) mutations and the risk of CHD, whereas GATA4 354 A>C (OR = 1.49, 95% CI = 1.15-1.93, P = .003) mutation was significantly associated with CHD risk. Subgroup analysis was further performed for GATA4 99 G>T, 487 C>T, and 354 A>C mutations based on sample size and ethnicity, and no significant association between GATA4 99 G>T or 487 C>T mutations and the risk of CHD was found in all subgroups, whereas GATA4 354 A>C mutation was significantly associated with CHD risk in large-sample-size and Asian subgroups. However, subgroup analysis by types of CHD indicated that there was no significant association between GATA4 354 A>C mutation and the risk of ventricular septal defects. CONCLUSIONS Our findings suggested that GATA4 99 G>T and 487 C>T mutations may not be related to the incidence of CHD. However, GATA4 354 A>C mutation was significantly associated with CHD risk.
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15
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Shaker O, Omran S, Sharaf E, A Hegazy G, Mashaly M, E A Gaboon N. A novel mutation in exon 1 of GATA4 in Egyptian patients with congenital heart disease. Turk J Med Sci 2017; 47:217-221. [PMID: 28263493 DOI: 10.3906/sag-1605-166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 06/05/2016] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM Congenital heart disease (CHD) is a common birth defect. Many studies have reported GATA4 mutations in patients with CHD, mainly septal defects. This study aimed to investigate the GATA4 exon 1 mutation in Egyptian patients with isolated congenital heart defects as a possible causative mutation. MATERIALS AND METHODS Screening for mutations or any sequence variations in exon 1 of the GATA4 gene was carried out by PCR amplification followed by direct sequencings in 165 Egyptian patients with different nonsyndromic congenital heart diseases and 93 controls who were matched in terms of age and sex. Thorough clinical assessments were done for all subjects, along with X-ray, 2D echocardiography, and Doppler examinations. RESULTS The most common CHD among our cases was isolated ventricular septal defect (VSD) in 47.3% (78/165), followed by isolated atrial septal defect. A novel nonsynonymous sequence variation in fragment 2 (P193H) of exon 1 of GATA4 was detected in 15 (9.1%) of the subjects with septal defects. This mutation was not seen in any of the control group subjects. CONCLUSION There is a high prevalence of exon 1 GATA4 mutation (9.1%) in our study compared to other studies in different populations, which may correlate with different ethnic populations.
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Affiliation(s)
- Olfat Shaker
- Departments of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Salwa Omran
- Department of Pediatrics, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Eman Sharaf
- Department of Pediatrics, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Gehan A Hegazy
- Department of Medical Biochemistry, National Research Center, Cairo, Egypt
| | - Mohamed Mashaly
- Department of Pediatrics, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Nagwa E A Gaboon
- Medical Genetic Center, Faculty of Medicine, AinShams University, Cairo, Egypt
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16
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Furtado MB, Nim HT, Boyd SE, Rosenthal NA. View from the heart: cardiac fibroblasts in development, scarring and regeneration. Development 2016; 143:387-97. [PMID: 26839342 DOI: 10.1242/dev.120576] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the adult, tissue repair after injury is generally compromised by fibrosis, which maintains tissue integrity with scar formation but does not restore normal architecture and function. The process of regeneration is necessary to replace the scar and rebuild normal functioning tissue. Here, we address this problem in the context of heart disease, and discuss the origins and characteristics of cardiac fibroblasts, as well as the crucial role that they play in cardiac development and disease. We discuss the dual nature of cardiac fibroblasts, which can lead to scarring, pathological remodelling and functional deficit, but can also promote heart function in some contexts. Finally, we review current and proposed approaches whereby regeneration could be fostered by interventions that limit scar formation.
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Affiliation(s)
- Milena B Furtado
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria 3800, Australia The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Hieu T Nim
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria 3800, Australia Systems Biology Institute (SBI) Australia, Monash University, Clayton, Victoria 3800, Australia
| | - Sarah E Boyd
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria 3800, Australia Systems Biology Institute (SBI) Australia, Monash University, Clayton, Victoria 3800, Australia
| | - Nadia A Rosenthal
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria 3800, Australia Systems Biology Institute (SBI) Australia, Monash University, Clayton, Victoria 3800, Australia National Heart and Lung Institute, Imperial College London, London SW3 6LY, UK The Jackson Laboratory, Bar Harbor, ME 04609, USA
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17
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Li FF, Deng X, Zhou J, Yan P, Zhao EY, Liu SL. Characterization of human bone morphogenetic protein gene variants for possible roles in congenital heart disease. Mol Med Rep 2016; 14:1459-64. [PMID: 27357418 PMCID: PMC4940093 DOI: 10.3892/mmr.2016.5428] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 04/25/2016] [Indexed: 12/25/2022] Open
Abstract
Congenital heart disease (CHD) is a complex illness with high rates of morbidity and mortality. In embryonic development, the heart is the first formed organ, which is strictly controlled by gene regulatory networks, including transcription factors, signaling pathways, epigenetic factors and microRNAs. Bone morphogenetic protein (BMP)-2 and -4 are essential in cardiogenesis as they can induce the expression of transcription factors, NKX2-5 and GATA binding protein 4, which are important in the development of the heart. The inhibition of BMP-2 and 4- inhibits the late expression of NKX2-5 and affects cardiac differentiation. The aim of the present study was to investigate whether BMP-2 and -4 variations may be associated with CHD in Chinese Han populations. The rs1049007, rs235768 and rs17563 single nucleotide polymorphisms (SNPs), which are genetic variations located within the translated region of the BMP-2 and -4, were evaluated in 230 patients with CHD from the Chinese Han population and 160 non CHD control individuals. Statistical analyses were performed using the χ2 test, implemented using SPSS software (version 13.0). The Hardy Weinberg equilibrium test was performed on the population using online Online Encyclopedia for Genetic Epidemiology studies software, and multiple-sequence alignments of the BMP proteins were performed using Vector NTI software. No statistically significant associations were identified between these genetic variations and the risk of CHD (rs1049007, P value=0.560; rs235768, P value=0.972; rs17563, P value=0.787). In addition, no correlation was found between the patients with CHD and the non-CHD control individuals. Therefore, the rs1049007, rs235768 and rs17563 genetic variations of BMP-2 were not associated with CHD in the Chinese Han population.
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Affiliation(s)
- Fei-Feng Li
- Genomics Research Center (one of the State‑Key Laboratory of Biopharmaceutical Engineering), Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xia Deng
- Genomics Research Center (one of the State‑Key Laboratory of Biopharmaceutical Engineering), Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Jing Zhou
- Intensive Care Unit, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Peng Yan
- Department of Colorectal Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Er-Ying Zhao
- Genomics Research Center (one of the State‑Key Laboratory of Biopharmaceutical Engineering), Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Shu-Lin Liu
- Genomics Research Center (one of the State‑Key Laboratory of Biopharmaceutical Engineering), Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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18
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Iyengar AJ, Celermajer DS, Winlaw DS, D’Udekem Y. Young and Free: Over 25 Years of Seminal Contributions to Complex Congenital Heart Disease From Australia & New Zealand. Heart Lung Circ 2016; 25:529-34. [DOI: 10.1016/j.hlc.2016.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 03/29/2016] [Indexed: 02/05/2023]
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19
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Yoshida A, Morisaki H, Nakaji M, Kitano M, Kim KS, Sagawa K, Ishikawa S, Satokata I, Mitani Y, Kato H, Hamaoka K, Echigo S, Shiraishi I, Morisaki T. Genetic mutation analysis in Japanese patients with non-syndromic congenital heart disease. J Hum Genet 2015; 61:157-62. [DOI: 10.1038/jhg.2015.126] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 09/01/2015] [Accepted: 09/23/2015] [Indexed: 12/22/2022]
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20
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Deng X, Zhou J, Li FF, Yan P, Zhao EY, Hao L, Yu KJ, Liu SL. Characterization of nodal/TGF-lefty signaling pathway gene variants for possible roles in congenital heart diseases. PLoS One 2014; 9:e104535. [PMID: 25111179 PMCID: PMC4128709 DOI: 10.1371/journal.pone.0104535] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 07/09/2014] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Nodal/TGF-Lefty signaling pathway has important effects at early stages of differentiation of human embryonic stem cells in directing them to differentiate into different embryonic lineages. LEFTY, one of transforming growth factors in the Nodal/TGF-Lefty signaling pathway, plays an important role in the development of heart. The aim of this work was to find evidence on whether Lefty variations are associated with congenital heart diseases (CHD). METHODS We sequenced the Lefty gene for 230 Chinese Han CHD patients and evaluated SNPs rs2295418, rs360057 and g.G169A, which are located within the translated regions of the genes. The statistical analyses were conducted using Chi-Square Tests as implemented in SPSS (version 13.0). The Hardy-Weinberg equilibrium test of the population was carried out using online software OEGE, and multiple-sequence alignments of LEFTY proteins were carried out using the Vector NTI software. RESULTS Two heterozygous variants in Lefty1 gene, g.G169A and g.A1035C, and one heterozygous variant in Lefty2 gene, g.C925A, were identified. Statistical analyses showed that the rs2295418 (g.C925A) variant in Lefty2 gene was obviously associated with the risk of CHD (P value = 0.016<0.05). The genotype frequency of rs360057 (g.A1035C) variant in Lefty1 gene was associated with the risk of CHD (P value = 0.007<0.05), but the allele frequency was not (P value = 0.317>0.05). CONCLUSIONS The SNP rs2295418 in the Lefty2 gene is associated with CHD in Chinese Han populations.
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Affiliation(s)
- Xia Deng
- Genomics Research Center (one of the State-Province Key Laboratory of Biopharmaceutical Engineering, China), Harbin Medical University, Harbin, China
| | - Jing Zhou
- Intensive Care Unit, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Fei-Feng Li
- Genomics Research Center (one of the State-Province Key Laboratory of Biopharmaceutical Engineering, China), Harbin Medical University, Harbin, China
- * E-mail: (K-JY); (F-FL); (S-LL)
| | - Peng Yan
- Department of Colorectal Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Er-Ying Zhao
- Genomics Research Center (one of the State-Province Key Laboratory of Biopharmaceutical Engineering, China), Harbin Medical University, Harbin, China
| | - Ling Hao
- Department of Oncology, the Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kai-Jiang Yu
- Intensive Care Unit, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
- * E-mail: (K-JY); (F-FL); (S-LL)
| | - Shu-Lin Liu
- Genomics Research Center (one of the State-Province Key Laboratory of Biopharmaceutical Engineering, China), Harbin Medical University, Harbin, China
- Department of Microbiology and Infectious Diseases, University of Calgary, Calgary, Canada
- * E-mail: (K-JY); (F-FL); (S-LL)
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21
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Furtado MB, Costa MW, Pranoto EA, Salimova E, Pinto AR, Lam NT, Park A, Snider P, Chandran A, Harvey RP, Boyd R, Conway SJ, Pearson J, Kaye DM, Rosenthal NA. Cardiogenic genes expressed in cardiac fibroblasts contribute to heart development and repair. Circ Res 2014; 114:1422-34. [PMID: 24650916 DOI: 10.1161/circresaha.114.302530] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
RATIONALE Cardiac fibroblasts are critical to proper heart function through multiple interactions with the myocardial compartment, but appreciation of their contribution has suffered from incomplete characterization and lack of cell-specific markers. OBJECTIVE To generate an unbiased comparative gene expression profile of the cardiac fibroblast pool, identify and characterize the role of key genes in cardiac fibroblast function, and determine their contribution to myocardial development and regeneration. METHODS AND RESULTS High-throughput cell surface and intracellular profiling of cardiac and tail fibroblasts identified canonical mesenchymal stem cell and a surprising number of cardiogenic genes, some expressed at higher levels than in whole heart. While genetically marked fibroblasts contributed heterogeneously to interstitial but not cardiomyocyte compartments in infarcted hearts, fibroblast-restricted depletion of one highly expressed cardiogenic marker, T-box 20, caused marked myocardial dysmorphology and perturbations in scar formation on myocardial infarction. CONCLUSIONS The surprising transcriptional identity of cardiac fibroblasts, the adoption of cardiogenic gene programs, and direct contribution to cardiac development and repair provoke alternative interpretations for studies on more specialized cardiac progenitors, offering a novel perspective for reinterpreting cardiac regenerative therapies.
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Affiliation(s)
- Milena B Furtado
- From the Australian Regenerative Medicine Institute (M.B.F., M.W.C., E.A.P., E.S., A.R.P., A.C., N.A.R.), Department of Anatomy and Developmental Biology (A.R.P., R.B.), and Monash Biomedical Imaging (J.P.), Monash University, Melbourne, Victoria, Australia; Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia (N.T.L., D.M.K.); Department of Pediatrics, Indiana University School of Medicine, Indianapolis (P.S., S.J.C.); and Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia (R.P.H.)
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22
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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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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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Heart failure in congenital heart disease: the role of genes and hemodynamics. Pflugers Arch 2014; 466:1025-35. [DOI: 10.1007/s00424-014-1447-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 01/07/2014] [Indexed: 12/28/2022]
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Abstract
The G1 cyclins play a pivotal role in regulation of cell differentiation and proliferation. The mechanisms underlying their cell-specific roles are incompletely understood. Here, we show that a G1 cyclin, cyclin D2 (CycD2), enhances the activity of transcription factor GATA4, a key regulator of cardiomyocyte growth and differentiation. GATA4 recruits CycD2 to its target promoters, and their interaction results in synergistic activation of GATA-dependent transcription. This effect is specific to CycD2 because CycD1 is unable to potentiate activity of GATA4 and is CDK-independent. GATA4 physically interacts with CycD2 through a discreet N-terminal activation domain that is essential for the cardiogenic activity of GATA4. Human mutations in this domain that are linked to congenital heart disease interfere with CycD2-GATA4 synergy. Cardiogenesis assays in Xenopus embryos indicate that CycD2 enhances the cardiogenic function of GATA4. Together, our data uncover a role for CycD2 as a cardiogenic coactivator of GATA4 and suggest a paradigm for cell-specific effects of cyclin Ds.
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Xiang R, Fan LL, Huang H, Cao BB, Li XP, Peng DQ, Xia K. A novel mutation of GATA4 (K319E) is responsible for familial atrial septal defect and pulmonary valve stenosis. Gene 2014. [DOI: 10.1016/j.gene.2013.10.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Yang YQ, Wang J, Liu XY, Chen XZ, Zhang W, Wang XZ. Mutation spectrum of GATA4 associated with congenital atrial septal defects. Arch Med Sci 2013; 9:976-83. [PMID: 24482639 PMCID: PMC3902718 DOI: 10.5114/aoms.2013.39788] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 11/21/2011] [Accepted: 11/28/2011] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Congenital atrial septal defect (ASD) is the second commonest form of cardiac developmental anomaly, responsible for substantial morbidity and mortality in affected individuals. Previous studies have implicated genetic defects in the pathogenesis of ASD. However, ASD is largely a genetically heterogeneous disease and the genetic determinants for ASD in the majority of patients remain to be identified. MATERIAL AND METHODS The entire coding region of GATA4, a gene encoding a zinc-finger transcription factor essential for normal cardiac morphogenesis, was sequenced in 220 unrelated patients with ASD. The available relatives of the patients harboring the identified mutations and 200 unrelated ethnicity-matched control individuals were genotyped. RESULTS Four heterozygous missense GATA4 mutations, p.P36S, p.H190R, p.S262A, and p.V399G, were identified in four unrelated patients with ASD, respectively. These mutations were neither detected in 200 control individuals nor described in the human SNP database. Alignment of multiple GATA4 protein sequences across species indicated that the affected amino acids were highly conserved evolutionarily. Genetic analysis of the available relatives of the mutation carriers showed that in each family the mutation co-segregated with ASD. CONCLUSIONS The findings expand the spectrum of mutations in GATA4 linked to ASD and provide new insight into the molecular etiology associated with ASD, suggesting the potential implications for the genetic diagnosis and gene-specific therapy for this prevalent cardiovascular abnormality in humans.
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Affiliation(s)
- Yi-Qing Yang
- Department of Cardiovascular Research, Shanghai Chest Hospital, Medical College of Shanghai Jiaotong University, Shanghai, China
| | - Juan Wang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xing-Yuan Liu
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiao-Zhong Chen
- Department of Cardiac Surgery, Shanghai Chest Hospital, Medical College of Shanghai Jiaotong University, Shanghai, China
| | - Wei Zhang
- Department of Cardiac Surgery, Shanghai Chest Hospital, Medical College of Shanghai Jiaotong University, Shanghai, China
| | - Xiao-Zhou Wang
- Department of Pediatric Cardiac Surgery, Shanghai Chest Hospital, Medical College of Shanghai Jiaotong University, Shanghai, China
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WANG XIKE, LI PINGJUAN, CHEN SUN, XI LILI, GUO YING, GUO AIHUA, SUN KUN. Influence of genes and the environment in familial congenital heart defects. Mol Med Rep 2013; 9:695-700. [DOI: 10.3892/mmr.2013.1847] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 11/28/2013] [Indexed: 11/06/2022] Open
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Dirkx E, da Costa Martins PA, De Windt LJ. Regulation of fetal gene expression in heart failure. Biochim Biophys Acta Mol Basis Dis 2013; 1832:2414-24. [PMID: 24036209 DOI: 10.1016/j.bbadis.2013.07.023] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 07/15/2013] [Accepted: 07/23/2013] [Indexed: 01/24/2023]
Abstract
During the processes leading to adverse cardiac remodeling and heart failure, cardiomyocytes react to neurohumoral stimuli and biomechanical stress by activating pathways that induce pathological hypertrophy. The gene expression patterns and molecular changes observed during cardiac hypertrophic remodeling bare resemblance to those observed during fetal cardiac development. The re-activation of fetal genes in the adult failing heart is a complex biological process that involves transcriptional, posttranscriptional and epigenetic regulation of the cardiac genome. In this review, the mechanistic actions of transcription factors, microRNAs and chromatin remodeling processes in regulating fetal gene expression in heart failure are discussed.
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Affiliation(s)
- Ellen Dirkx
- Dept of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; ICIN-Netherlands Heart Institute, Royal Netherlands Academy of Sciences, Utrecht, The Netherlands
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Preuss C, Andelfinger G. Genetics of Heart Failure in Congenital Heart Disease. Can J Cardiol 2013; 29:803-10. [DOI: 10.1016/j.cjca.2013.03.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Revised: 02/27/2013] [Accepted: 03/06/2013] [Indexed: 01/09/2023] Open
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van Engelen K, Baars MJ, Felix JP, Postma AV, Mulder BJ, Smets EM. The value of the clinical geneticist caring for adults with congenital heart disease: Diagnostic yield and patients' perspective. Am J Med Genet A 2013; 161A:1628-37. [DOI: 10.1002/ajmg.a.35973] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Accepted: 02/26/2013] [Indexed: 02/07/2023]
Affiliation(s)
| | - Marieke J.H. Baars
- Department of Clinical Genetics; Academic Medical Center; Amsterdam; The; Netherlands
| | - Joyce P. Felix
- Department of Cardiology; Academic Medical Center; Amsterdam; The; Netherlands
| | | | | | - Ellen M.A. Smets
- Department of Medical Psychology; Academic Medical Center; Amsterdam; The; Netherlands
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Cheng C, Lin Y, Yang F, Wang W, Wu C, Qin J, Shao X, Zhou L. Mutational screening of affected cardiac tissues and peripheral blood cells identified novel somatic mutations in GATA4 in patients with ventricular septal defect. J Biomed Res 2013; 25:425-30. [PMID: 23554720 PMCID: PMC3596722 DOI: 10.1016/s1674-8301(11)60056-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 07/31/2011] [Accepted: 10/05/2011] [Indexed: 12/18/2022] Open
Abstract
The aim of this study was to examine how somatic mutations of the GATA4 gene contributed to the genesis of ventricular septal defect (VSD). The coding and intron-exon boundary regions of GATA4 were sequenced of DNA samples from peripheral blood cells and cardiac tissues of twenty surgically treated probands with VSD. Seven novel heterozygous variants were detected in cardiac tissues from VSD patients, but they were not detected in the peripheral blood cells of VSD patients or in 500 healthy control samples. We replicated 14 single nucleotide polymorphisms (SNPs) reported in NCBI. Bioinformatics analysis was performed to analyze the possible mechanism by which mutations were linked to VSD. Among those variants, c. 1004C>A (p.S335X) occurred in the highly conserved domain of GATA4 and generated a termination codon, which led to the production of truncated GATA4. The seven novel heterozygous GATA4 mutations were only identified in cardiac tissues with VSD, suggesting that they are of somatic origin. A higher mutation rate in cardiac tissues than in peripheral blood cells implies that the genetic contribution to VSD may have been underestimated.
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Affiliation(s)
- Chunyan Cheng
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China
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33
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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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Wei D, Bao H, Liu XY, Zhou N, Wang Q, Li RG, Xu YJ, Yang YQ. GATA5 loss-of-function mutations underlie tetralogy of fallot. Int J Med Sci 2013; 10:34-42. [PMID: 23289003 PMCID: PMC3534875 DOI: 10.7150/ijms.5270] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 11/27/2012] [Indexed: 01/08/2023] Open
Abstract
Tetraology of Fallot (TOF) is the most common form of cyanotic congenital heart disease and is a major cause of significant morbidity and mortality. Emerging evidence demonstrates that genetic risk factors are involved in the pathogenesis of TOF. However, TOF is genetically heterogeneous and the genetic defects responsible for TOF remain largely unclear. In the present study, the whole coding region of the GATA5 gene, which encodes a zinc-finger transcription factor essential for cardiogenesis, was sequenced in 130 unrelated patients with TOF. The relatives of the index patients harboring the identified mutations and 200 unrelated control individuals were subsequently genotyped. The functional characteristics of the mutations were analyzed using a luciferase reporter assay system. As a result, 2 novel heterozygous GATA5 mutations, p.R187G and p.H207R, were identified in 2 families with autosomal dominantly inherited TOF, respectively. The variations were absent in 400 control alleles and the altered amino acids were completely conserved evolutionarily. Functional analysis showed that the GATA5 mutants were associated with significantly decreased transcriptional activation compared with their wild-type counterpart. To our knowledge, this is the first report on the association of GATA5 loss-of-function mutations with TOF, suggesting potential implications for the early prophylaxis and allele-specific therapy of human TOF.
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Affiliation(s)
- Dong Wei
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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35
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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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36
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Serra-Juhé C, Rodríguez-Santiago B, Cuscó I, Vendrell T, Camats N, Torán N, Pérez-Jurado LA. Contribution of rare copy number variants to isolated human malformations. PLoS One 2012; 7:e45530. [PMID: 23056206 PMCID: PMC3463597 DOI: 10.1371/journal.pone.0045530] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 08/21/2012] [Indexed: 11/18/2022] Open
Abstract
Background Congenital malformations are present in approximately 2–3% of liveborn babies and 20% of stillborn fetuses. The mechanisms underlying the majority of sporadic and isolated congenital malformations are poorly understood, although it is hypothesized that the accumulation of rare genetic, genomic and epigenetic variants converge to deregulate developmental networks. Methodology/Principal Findings We selected samples from 95 fetuses with congenital malformations not ascribed to a specific syndrome (68 with isolated malformations, 27 with multiple malformations). Karyotyping and Multiplex Ligation-dependent Probe Amplification (MLPA) discarded recurrent genomic and cytogenetic rearrangements. DNA extracted from the affected tissue (46%) or from lung or liver (54%) was analyzed by molecular karyotyping. Validations and inheritance were obtained by MLPA. We identified 22 rare copy number variants (CNV) [>100 kb, either absent (n = 7) or very uncommon (n = 15, <1/2,000) in the control population] in 20/95 fetuses with congenital malformations (21%), including 11 deletions and 11 duplications. One of the 9 tested rearrangements was de novo while the remaining were inherited from a healthy parent. The highest frequency was observed in fetuses with heart hypoplasia (8/17, 62.5%), with two events previously related with the phenotype. Double events hitting candidate genes were detected in two samples with brain malformations. Globally, the burden of deletions was significantly higher in fetuses with malformations compared to controls. Conclusions/Significance Our data reveal a significant contribution of rare deletion-type CNV, mostly inherited but also de novo, to human congenital malformations, especially heart hypoplasia, and reinforce the hypothesis of a multifactorial etiology in most cases.
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Affiliation(s)
- Clara Serra-Juhé
- Unitat de Genètica, Universitat Pompeu Fabra, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
| | | | - Ivon Cuscó
- Unitat de Genètica, Universitat Pompeu Fabra, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Teresa Vendrell
- Programa de Medicina Molecular i Genètica, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Núria Camats
- Servei d'Anatomia Patològica, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Núria Torán
- Servei d'Anatomia Patològica, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Luis A. Pérez-Jurado
- Unitat de Genètica, Universitat Pompeu Fabra, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
- * E-mail:
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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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Blue GM, Kirk EP, Sholler GF, Harvey RP, Winlaw DS. Congenital heart disease: current knowledge about causes and inheritance. Med J Aust 2012; 197:155-9. [DOI: 10.5694/mja12.10811] [Citation(s) in RCA: 170] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gillian M Blue
- Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW
| | - Edwin P Kirk
- Department of Medical Genetics, Sydney Children's Hospital, Sydney, NSW
| | - Gary F Sholler
- Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW
| | | | - David S Winlaw
- Heart Centre for Children, The Children's Hospital at Westmead, Sydney, NSW
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Misra C, Sachan N, McNally CR, Koenig SN, Nichols HA, Guggilam A, Lucchesi PA, Pu WT, Srivastava D, Garg V. Congenital heart disease-causing Gata4 mutation displays functional deficits in vivo. PLoS Genet 2012; 8:e1002690. [PMID: 22589735 PMCID: PMC3349729 DOI: 10.1371/journal.pgen.1002690] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Accepted: 03/20/2012] [Indexed: 11/19/2022] Open
Abstract
Defects of atrial and ventricular septation are the most frequent form of congenital heart disease, accounting for almost 50% of all cases. We previously reported that a heterozygous G296S missense mutation of GATA4 caused atrial and ventricular septal defects and pulmonary valve stenosis in humans. GATA4 encodes a cardiac transcription factor, and when deleted in mice it results in cardiac bifida and lethality by embryonic day (E)9.5. In vitro, the mutant GATA4 protein has a reduced DNA binding affinity and transcriptional activity and abolishes a physical interaction with TBX5, a transcription factor critical for normal heart formation. To characterize the mutation in vivo, we generated mice harboring the same mutation, Gata4 G295S. Mice homozygous for the Gata4 G295S mutant allele have normal ventral body patterning and heart looping, but have a thin ventricular myocardium, single ventricular chamber, and lethality by E11.5. While heterozygous Gata4 G295S mutant mice are viable, a subset of these mice have semilunar valve stenosis and small defects of the atrial septum. Gene expression studies of homozygous mutant mice suggest the G295S protein can sufficiently activate downstream targets of Gata4 in the endoderm but not in the developing heart. Cardiomyocyte proliferation deficits and decreased cardiac expression of CCND2, a member of the cyclin family and a direct target of Gata4, were found in embryos both homozygous and heterozygous for the Gata4 G295S allele. To further define functions of the Gata4 G295S mutation in vivo, compound mutant mice were generated in which specific cell lineages harbored both the Gata4 G295S mutant and Gata4 null alleles. Examination of these mice demonstrated that the Gata4 G295S protein has functional deficits in early myocardial development. In summary, the Gata4 G295S mutation functions as a hypomorph in vivo and leads to defects in cardiomyocyte proliferation during embryogenesis, which may contribute to the development of congenital heart defects in humans. Cardiac malformations occur due to abnormal heart development and are the most prevalent human birth defect. Defects of atrial and ventricular septation are the most common type of congenital heart defect and are the result of incomplete closure of the atrial and ventricular septa, a process required for formation of a four-chambered heart. The molecular mechanisms that underlie atrial and ventricular septal defects are unknown. We previously published a highly penetrant autosomal dominant mutation (G296S) in GATA4, which was associated with atrial and ventricular septal defects in a large kindred. The disease-causing mutation has a spectrum of biochemical deficits affecting both DNA binding and protein–protein interactions. Here, we report the generation and phenotypic characterization of mice harboring the orthologous mutation in Gata4 (G295S). While homozygous mutant mice display embryonic lethality and cardiac defects, the phenotype is less severe than Gata4-null mice. A subset of Gata4 G295S heterozygote mice display a persistent interatrial communication (patent foramen ovale) and stenosis of the semilunar valves. Molecular characterization of the mutant mice suggests that the Gata4 G295S mutant protein results in diminished expression of Gata4 target genes in the heart and functional deficits in cardiomyocyte proliferation. Thus, cardiomyocyte proliferation defects may contribute to defects of cardiac septation found in humans with GATA4 mutations.
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Affiliation(s)
- Chaitali Misra
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
| | - Nita Sachan
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Caryn Rothrock McNally
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Sara N. Koenig
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
| | - Haley A. Nichols
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Anuradha Guggilam
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - William T. Pu
- Department of Cardiology, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Deepak Srivastava
- Gladstone Institute of Cardiovascular Disease, University of California San Francisco, San Francisco, California, United States of America
- Department of Pediatrics, University of California San Francisco, San Francisco, California, United States of America
- Department Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America
| | - Vidu Garg
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
- Department of Molecular Genetics, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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Wu G, Shan J, Pang S, Wei X, Zhang H, Yan B. Genetic analysis of the promoter region of the GATA4 gene in patients with ventricular septal defects. Transl Res 2012; 159:376-82. [PMID: 22500510 DOI: 10.1016/j.trsl.2011.10.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 10/21/2011] [Accepted: 10/27/2011] [Indexed: 01/06/2023]
Abstract
Ventricular septal defects (VSDs) are the most common type of congenital heart diseases (CHDs). To date, the genetic causes for sporadic VSDs remain largely unknown. GATA transcription factor 4 (GATA4) is a zinc-finger transcription factor that is expressed in developing heart and adult cardiomyocytes. Mutations in the coding region of the GATA4 gene have been identified in CHD patients, including VSD. As the GATA4 factor is a dosage-sensitive regulator, we hypothesized that the promoter region variants of the GATA4 gene may be genetic causes of VSD. In this study, we analyzed the promoter region of the GATA4 gene by bidirectional sequencing in 172 VSD patients and 171 healthy controls. The results showed that 5 heterozygous sequence variants (NG_008177:g.4071T>C, NG_008177:g.4148C>A, NG_008177:g.4566C>T, NG_008177:g.4653G>T, and NG_008177:g.4690G>deletion) within the promoter region of the GATA gene were identified in 5 VSD patients, but in none of controls. One heterozygous sequence variant (g.4762C>A) was found only in one control, which may have no functional significance. A functional analysis revealed that the transcriptional activity of variant NG_008177:g.4566C>T was reduced significantly, whereas the transcriptional activities of the variants (NG_008177:g.4071T>C, NG_008177:g.4148C>A, NG_008177:g.4653G>T, and NG_008177:g.4690G>deletion) were increased significantly compared with the wild-type GATA4 gene promoter. As GATA4 is a dosage-sensitive regulator during development, our data suggest that these sequence variants within the promoter region of the GATA4 gene may contribute to the VSD etiology by altering its gene expression. Additional studies in experimental animals will deepen our understanding of the genetic basis of VSD and shed light on designing novel molecular therapies for adult VSD patients carrying these variants.
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Affiliation(s)
- Guanghua Wu
- Shandong Provincial Key Laboratory of Cardiac Disease Diagnosis and Treatment, Jining Medical College Affiliated Hospital, Jining Medical College, Jining, Shandong 272029, China
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Yang YQ, Li L, Wang J, Liu XY, Chen XZ, Zhang W, Wang XZ, Jiang JQ, Liu X, Fang WY. A novel GATA4 loss-of-function mutation associated with congenital ventricular septal defect. Pediatr Cardiol 2012; 33:539-46. [PMID: 22101736 DOI: 10.1007/s00246-011-0146-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2011] [Accepted: 11/03/2011] [Indexed: 01/11/2023]
Abstract
Ventricular septal defect (VSD) is the most prevalent type of congenital heart disease and a major cause for the significantly increased morbidity and mortality among infants. Aggregating evidence indicates that genetic defects are involved in the pathogenesis of congenital VSD. Nevertheless, VSD is genetically heterogeneous, and the genetic determinants for VSD in the majority of patients remain to be identified. In this study, the entire coding region of GATA4, a gene encoding a zinc finger transcription factor essential for normal cardiac morphogenesis, was sequenced in 160 unrelated patients with VSD. The available relatives of the index patient harboring the identified mutation and 200 unrelated control individuals were subsequently genotyped. The disease-causing potential of a sequence alteration 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 GATA4 variation, p.R43W, was identified in a proband with VSD, that was absent in control subjects. Genetic analysis of the family members of the variation carrier showed that the substitution co-segregated with VSD. The p.R43W variant was predicted to be a pathogenic mutation, and the functional analysis demonstrated that the GATA4 R43W mutant protein resulted in significantly decreased transcriptional activity compared with its wild-type counterpart. The findings expand the mutational spectrum of GATA4 linked to VSD and provide more insight into the molecular mechanism of VSD.
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Affiliation(s)
- Yi-Qing Yang
- Department of Cardiovascular Research, Shanghai Chest Hospital, Medical College of Shanghai Jiaotong University, 241 West Huaihai Road, Shanghai 200030, China.
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Abstract
Transcription factors regulate formation and function of the heart, and perturbation of transcription factor expression and regulation disrupts normal heart structure and function. Multiple mechanisms regulate the level and locus-specific activity of transcription factors, including transcription, translation, subcellular localization, posttranslational modifications, and context-dependent interactions with other transcription factors, chromatin remodeling enzymes, and epigenetic regulators. The zinc finger transcription factor GATA4 is among the best-studied cardiac transcriptional factors. This review focuses on molecular mechanisms that regulate GATA4 transcriptional activity in the cardiovascular system, providing a framework to investigate and understand the molecular regulation of cardiac gene transcription by other transcription factors.
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Vallaster M, Vallaster CD, Wu SM. Epigenetic mechanisms in cardiac development and disease. Acta Biochim Biophys Sin (Shanghai) 2012; 44:92-102. [PMID: 22194017 DOI: 10.1093/abbs/gmr090] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
During mammalian development, cardiac specification and ultimately lineage commitment to a specific cardiac cell type is accomplished by the action of specific transcription factors (TFs) and their meticulous control on an epigenetic level. In this review, we detail how cardiac-specific TFs function in concert with nucleosome remodeling and histone-modifying enzymes to regulate a diverse network of genes required for processes such as cell growth and proliferation, or epithelial to mesenchymal transition (EMT), for instance. We provide examples of how several cardiac TFs, such as Nkx2.5, WHSC1, Tbx5, and Tbx1, which are associated with developmental and congenital heart defects, are required for the recruitment of histone modifiers, such as Jarid2, p300, and Ash2l, and components of ATP-dependent remodeling enzymes like Brg1, Baf60c, and Baf180. Binding of these TFs to their respective sites at cardiac genes coincides with a distinct pattern of histone marks, indicating that the precise regulation of cardiac gene networks is orchestrated by interactions between TFs and epigenetic modifiers. Furthermore, we speculate that an epigenetic signature, comprised of TF occupancy, histone modifications, and overall chromatin organization, is an underlying mechanism that governs cardiac morphogenesis and disease.
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Affiliation(s)
- Marcus Vallaster
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, 02114, USA
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Abstract
Congenital heart disease is a major cause of morbidity and mortality throughout life. Mutations in numerous transcription factors have been identified in patients and families with some of the most common forms of cardiac malformations and arrhythmias. This review discusses transcription factor pathways known to be important for normal heart development and how abnormalities in these pathways have been linked to morphological and functional forms of congenital heart defects. A comprehensive, current list of known transcription factor mutations associated with congenital heart disease is provided, but the review focuses primarily on three key transcription factors, Nkx2-5, GATA4, and Tbx5, and their known biochemical and genetic partners. By understanding the interaction partners, transcriptional targets, and upstream activators of these core cardiac transcription factors, additional information about normal heart formation and further insight into genes and pathways affected in congenital heart disease should result.
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Affiliation(s)
- David J McCulley
- Cardiovascular Research Institute and Department of Biochemistry and Biophysics, University of California, San Francisco, California, USA
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Schachterle W, Rojas A, Xu SM, Black BL. ETS-dependent regulation of a distal Gata4 cardiac enhancer. Dev Biol 2011; 361:439-49. [PMID: 22056786 DOI: 10.1016/j.ydbio.2011.10.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/30/2011] [Accepted: 10/08/2011] [Indexed: 01/10/2023]
Abstract
The developing heart contains an inner tube of specialized endothelium known as endocardium, which performs multiple essential functions. In spite of the essential role of the endocardium in heart development and function, the transcriptional pathways that regulate its development remain largely undefined. GATA4 is a zinc finger transcription factor that is expressed in multiple cardiovascular lineages and is required for endocardial cushion development and embryonic viability, but the transcriptional pathways upstream of Gata4 in the endocardium and its derivatives in the endocardial cushions are unknown. Here, we describe a distal enhancer from the mouse Gata4 gene that is briefly active in multiple cardiac lineages early in cardiac development but restricts to the endocardium where it remains active through cardiogenesis. The activity of this Gata4 cardiac enhancer in transgenic embryos and in cultured aortic endothelial cells is dependent on four ETS sites. To identify which ETS transcription factors might be involved in Gata4 regulation via the ETS sites in the enhancer, we determined the expression profile of 24 distinct ETS factors in embryonic mouse hearts. Among multiple ETS transcripts present, ETS1, FLI1, ETV1, ETV5, ERG, and ETV6 were the most abundant in the early embryonic heart. We found that ETS1, FLI1, and ERG were strongly expressed in the heart at embryonic day 8.5 and that ETS1 and ERG bound to the endogenous Gata4 enhancer in cultured endothelial cells. Thus, these studies define the ETS expression profile in the early embryonic heart and identify an ETS-dependent enhancer from the Gata4 locus.
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Affiliation(s)
- William Schachterle
- Cardiovascular Research Institute and Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158-2517, USA
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Granados-Riveron JT, Pope M, Bu'lock FA, Thornborough C, Eason J, Setchfield K, Ketley A, Kirk EP, Fatkin D, Feneley MP, Harvey RP, Brook JD. Combined mutation screening of NKX2-5, GATA4, and TBX5 in congenital heart disease: multiple heterozygosity and novel mutations. CONGENIT HEART DIS 2011; 7:151-9. [PMID: 22011241 PMCID: PMC3370385 DOI: 10.1111/j.1747-0803.2011.00573.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background. Variants of several genes encoding transcription modulators, signal transduction, and structural proteins are known to cause Mendelian congenital heart disease (CHD). NKX2-5 and GATA4 were the first CHD-causing genes identified by linkage analysis in large affected families. Mutations of TBX5 cause Holt-Oram syndrome, which includes CHD as a clinical feature. All three genes have a well-established role in cardiac development. Design. In order to investigate the possible role of multiple mutations in CHD, a combined mutation screening was performed in NKX2-5, GATA4, and TBX5 in the same patient cohort. Samples from a cohort of 331 CHD patients were analyzed by polymerase chain reaction, double high-performance liquid chromatography and sequencing in order to identify changes in the NKX2-5, GATA4, and TBX5 genes. Results. Two cases of multiple heterozygosity of putative disease-causing mutations were identified. One patient was found with a novel L122P NKX2-5 mutation in combination with the private A1443D mutation of MYH6. A patient heterozygote for a D425N GATA4 mutation carries also a private mutation of the MYH6 gene (V700M). Conclusions. In addition to reporting two novel mutations of NKX2-5 in CHD, we describe families where multiple individual mutations seem to have an additive effect over the pathogenesis of CHD. Our findings highlight the usefulness of multiple gene mutational analysis of large CHD cohorts.
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Affiliation(s)
- Javier T Granados-Riveron
- Institute of Genetics, School of Biology, University of Nottingham, Queen's Medical Centre, Nottingham, UK
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Moradi Marjaneh M, Kirk EP, Posch MG, Ozcelik C, Berger F, Hetzer R, Otway R, Butler TL, Blue GM, Griffiths LR, Fatkin D, Martinson JJ, Winlaw DS, Feneley MP, Harvey RP. Investigation of association between PFO complicated by cryptogenic stroke and a common variant of the cardiac transcription factor GATA4. PLoS One 2011; 6:e20711. [PMID: 21673957 PMCID: PMC3108965 DOI: 10.1371/journal.pone.0020711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Accepted: 05/08/2011] [Indexed: 01/12/2023] Open
Abstract
Patent foramen ovale (PFO) is associated with clinical conditions including cryptogenic stroke, migraine and varicose veins. Data from studies in humans and mouse suggest that PFO and the secundum form of atrial septal defect (ASDII) exist in an anatomical continuum of septal dysmorphogenesis with a common genetic basis. Mutations in multiple members of the evolutionarily conserved cardiac transcription factor network, including GATA4, cause or predispose to ASDII and PFO. Here, we assessed whether the most prevalent variant of the GATA4 gene, S377G, was significantly associated with PFO or ASD. Our analysis of world indigenous populations showed that GATA4 S377G was largely Caucasian-specific, and so subjects were restricted to those of Caucasian descent. To select for patients with larger PFO, we limited our analysis to those with cryptogenic stroke in which PFO was a subsequent finding. In an initial study of Australian subjects, we observed a weak association between GATA4 S377G and PFO/Stroke relative to Caucasian controls in whom ASD and PFO had been excluded (OR = 2.16; p = 0.02). However, in a follow up study of German Caucasians no association was found with either PFO or ASD. Analysis of combined Australian and German data confirmed the lack of a significant association. Thus, the common GATA4 variant S377G is likely to be relatively benign in terms of its participation in CHD and PFO/Stroke.
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Affiliation(s)
- Mahdi Moradi Marjaneh
- The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, University of New South Wales, Kensington, Australia
| | - Edwin P. Kirk
- Faculty of Medicine, University of New South Wales, Kensington, Australia
- Department of Medical Genetics, Sydney Children's Hospital, Randwick, Australia
| | - Maximilian G. Posch
- The Experimental and Clinical Research Center (ECRC), Charité – Universitätsmedizin, Berlin, Germany
- Deutsches Herzzentrum Berlin, Berlin, Germany
| | - Cemil Ozcelik
- The Experimental and Clinical Research Center (ECRC), Charité – Universitätsmedizin, Berlin, Germany
| | | | | | - Robyn Otway
- The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
| | - Tanya L. Butler
- Heart Centre for Children, The Children's Hospital at Westmead, Westmead, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Gillian M. Blue
- Heart Centre for Children, The Children's Hospital at Westmead, Westmead, Australia
| | - Lyn R. Griffiths
- Genomics Research Centre, Griffith University, Gold Coast, Australia
| | - Diane Fatkin
- The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, University of New South Wales, Kensington, Australia
- Cardiology Department, St Vincent's Hospital, Darlinghurst, Australia
| | - Jeremy J. Martinson
- University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - David S. Winlaw
- Heart Centre for Children, The Children's Hospital at Westmead, Westmead, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Michael P. Feneley
- The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, University of New South Wales, Kensington, Australia
- Cardiology Department, St Vincent's Hospital, Darlinghurst, Australia
| | - Richard P. Harvey
- The Victor Chang Cardiac Research Institute, Darlinghurst, Australia
- Faculty of Medicine, University of New South Wales, Kensington, Australia
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