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Dorn C, Perrot A, Grunert M, Rickert-Sperling S. Human Genetics of Tetralogy of Fallot and Double-Outlet Right Ventricle. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1441:629-644. [PMID: 38884738 DOI: 10.1007/978-3-031-44087-8_36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Tetralogy of Fallot (TOF) and double-outlet right ventricle (DORV) are conotruncal defects resulting from disturbances of the second heart field and the neural crest, which can occur as isolated malformations or as part of multiorgan syndromes. Their etiology is multifactorial and characterized by overlapping genetic causes. In this chapter, we present the different genetic alterations underlying the two diseases, which range from chromosomal abnormalities like aneuploidies and structural mutations to rare single nucleotide variations affecting distinct genes. For example, mutations in the cardiac transcription factors NKX2-5, GATA4, and HAND2 have been identified in isolated TOF cases, while mutations of TBX5 and 22q11 deletion, leading to haploinsufficiency of TBX1, cause Holt-Oram and DiGeorge syndrome, respectively. Moreover, genes involved in signaling pathways, laterality determination, and epigenetic mechanisms have also been found mutated in TOF and/or DORV patients. Finally, genome-wide association studies identified common single nucleotide polymorphisms associated with the risk for TOF.
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Affiliation(s)
- Cornelia Dorn
- Cardiovascular Genetics, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Andreas Perrot
- Cardiovascular Genetics, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Marcel Grunert
- Cardiovascular Genetics, Charité Universitätsmedizin Berlin, Berlin, Germany
- DiNAQOR AG, Schlieren, Switzerland
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Liu Z, Hu W, Qin Y, Sun L, Jing L, Lu M, Li Y, Qu J, Yang Z. Isl1 promotes gene transcription through physical interaction with Set1/Mll complexes. Eur J Cell Biol 2023; 102:151295. [PMID: 36758343 DOI: 10.1016/j.ejcb.2023.151295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023] Open
Abstract
Histone H3 lysine 4 (H3K4) methylation is generally recognized as a prominent marker of gene activation. While Set1/Mll complexes are major methyltransferases that are responsible for H3K4 methylation, the mechanism of how these complexes are recruited into the target gene promotor is still unclear. Here, starting with an affinity purification-mass spectrometry approach, we have found that Isl1, a highly tissue-specific expressed LIM/homeodomain transcription factor, is physically associated with Set1/Mll complexes. We then show that Wdr5 directly binds to Isl1. And this binding is likely mediated by the homeodomain of Isl1. Functionally, using mouse β-cell and human neuroblastoma tumor cell lines, we show that both Wdr5 binding and H3K4 methylation level at promoters of some Isl1 target genes are significantly reduced upon depletion of Isl1, suggesting Isl1 is required for efficient locus-specific H3K4 methylation. Taken together, our results establish a critical role of Set1/Mll complexes in regulating the target gene expression of Isl1.
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Affiliation(s)
- Zhe Liu
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Weijing Hu
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yali Qin
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Sun
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lingyun Jing
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Manman Lu
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yan Li
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jing Qu
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Zhenhua Yang
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Yin XY, Chen HX, Chen Z, Yang Q, Han J, He GW. Genetic Variants of ISL1 Gene Promoter Identified from Congenital Tetralogy of Fallot Patients Alter Cellular Function Forming Disease Basis. Biomolecules 2023; 13:biom13020358. [PMID: 36830727 PMCID: PMC9953631 DOI: 10.3390/biom13020358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/29/2022] [Accepted: 01/06/2023] [Indexed: 02/15/2023] Open
Abstract
Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease in newborns. ISL1 is a master transcription factor in second heart field development, whereas the roles of ISL1 gene promoter variants in TOF patients have not been genetically investigated. Total DNA extraction from 601 human subjects, including 308 TOF patients and 293 healthy controls, and Sanger sequencing were performed. Four variants (including one novel heterozygous variant) within the ISL1 gene promoter were only found in TOF patients. Functional analysis of DNA sequence variants was performed by using the dual-luciferase reporter assay and demonstrated that three of the four variants significantly decreased the transcriptional activity of ISL1 gene promoter in HL-1 cells (p < 0.05). Further, the online JASPAR database and electrophoretic mobility shift assay showed that the three variants affected the binding of transcription factors and altered ISL1 expression levels. In conclusion, the current study for the first time demonstrated that the variants identified from the ISL1 gene promoter region are likely involved in the development of TOF by affecting the transcriptional activity and altering the ISL1 expression level. Therefore, these findings may provide new insights into the molecular etiology and potential therapeutic strategy of TOF.
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Affiliation(s)
- Xiu-Yun Yin
- The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Tianjin University & Chinese Academy of Medical Sciences, Tianjin 300457, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu 241002, China
| | - Huan-Xin Chen
- The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Tianjin University & Chinese Academy of Medical Sciences, Tianjin 300457, China
| | - Zhuo Chen
- The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Tianjin University & Chinese Academy of Medical Sciences, Tianjin 300457, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu 241002, China
| | - Qin Yang
- The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Tianjin University & Chinese Academy of Medical Sciences, Tianjin 300457, China
| | - Jun Han
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu 241002, China
| | - Guo-Wei He
- The Institute of Cardiovascular Diseases & Department of Cardiovascular Surgery, TEDA International Cardiovascular Hospital, Tianjin University & Chinese Academy of Medical Sciences, Tianjin 300457, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu 241002, China
- Correspondence: or ; Tel.: +86-22-6520-9089
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Sarwar S, Shabana, Tahir A, Liaqat Z, Naseer S, Seme RS, Mehmood S, Shahid SU, Hasnain S. Study of variants associated with ventricular septal defects (VSDs) highlights the unique genetic structure of the Pakistani population. Ital J Pediatr 2022; 48:124. [PMID: 35870951 PMCID: PMC9308904 DOI: 10.1186/s13052-022-01323-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 07/08/2022] [Indexed: 11/28/2022] Open
Abstract
Background Ventricular septal defects (VSDs) are one of the leading causes of death due to cardiac anomalies during the first months of life. The prevalence of VSD in neonates is reported up to 4%. Despite the remarkable progress in medication, treatment and surgical procedure for VSDs, the genetic etiology of VSDs is still in infancy because of the complex genetic and environmental interactions. Methods Three hundred fifty subjects (200 VSD children and 150 healthy controls) were recruited from different pediatric cardiac units. Pediatric clinical and demographic data were collected. A total of six variants, rs1017 (ISL1), rs7240256 (NFATc1), rs36208048 (VEGF), variant of HEY2, rs11067075 (TBX5) and rs1801133 (MTHFR) genes were genotyped by tetra-ARMS PCR and PCR–RFLP methods. Results The results showed that in cases, the rs1017 (g.16138A > T) variant in the ISL1 gene has an allele frequency of 0.42 and 0.58 respectively for the T and A alleles, and 0.75 and 0.25 respectively in the controls. The frequencies of the AA, TA and TT genotypes were, 52%, 11% and 37% in cases versus 21%, 8% and 71% respectively in the controls. For the NFATc1 variant rs7240256, minor allele frequency (MAF) was 0.43 in cases while 0.23 in controls. For the variant in the VEGF gene, genotype frequencies were 0% (A), 32% (CA) and 68% (CC) in cases and 0.0%, 33% and 67% respectively in controls. The allele frequency of C and A were 0.84 and 0.16 in cases and 0.83 and 0.17 respectively in controls. The TBX5 polymorphism rs11067075 (g.51682G > T) had an allelic frequency of 0.44 and 0.56 respectively for T and G alleles in cases, versus 0.26 and 0.74 in the controls. We did not detect the presence of the HEY2 gene variant (g.126117350A > C) in our pediatric cohort. For the rs1801133 (g.14783C > T) variant in the MTHFR gene, the genotype frequencies were 25% (CC), 62% (CT) and 13% (TT) in cases, versus 88%, 10% and 2% in controls. The ISL1, NFATc1, TBX5 and MTHFR variants were found to be in association with VSD in the Pakistani pediatric cohort whilst the VEGF and HEY2 variants were completely absent in our cohort. Conclusion We propose that a wider programme of genetic screening of the Pakistani population for genetic markers in heart development genes would be helpful in reducing the risk of VSDs.
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Single-cell transcriptomic profiling unveils dysregulation of cardiac progenitor cells and cardiomyocytes in a mouse model of maternal hyperglycemia. Commun Biol 2022; 5:820. [PMID: 35970860 PMCID: PMC9378651 DOI: 10.1038/s42003-022-03779-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 07/28/2022] [Indexed: 11/08/2022] Open
Abstract
Congenital heart disease (CHD) is the most prevalent birth defect, often linked to genetic variations, environmental exposures, or combination of both. Epidemiological studies reveal that maternal pregestational diabetes is associated with ~5-fold higher risk of CHD in the offspring; however, the causal mechanisms affecting cardiac gene-regulatory-network (GRN) during early embryonic development remain poorly understood. In this study, we utilize an established murine model of pregestational diabetes to uncover the transcriptional responses in key cell-types of the developing heart exposed to maternal hyperglycemia (matHG). Here we show that matHG elicits diverse cellular responses in E9.5 and E11.5 embryonic hearts compared to non-diabetic hearts by single-cell RNA-sequencing. Through differential-gene-expression and cellular trajectory analyses, we identify perturbations in genes, predominantly affecting Isl1+ second heart field progenitors and Tnnt2+ cardiomyocytes with matHG. Using cell-fate mapping analysis in Isl1-lineage descendants, we demonstrate that matHG impairs cardiomyocyte differentiation and alters the expression of lineage-specifying cardiac genes. Finally, our work reveals matHG-mediated transcriptional changes in second heart field lineage that elevate CHD risk by perturbing Isl1-GRN during cardiomyocyte differentiation. Gene-environment interaction studies targeting the Isl1-GRN in cardiac progenitor cells will have a broader impact on understanding the mechanisms of matHG-induced risk of CHD associated with diabetic pregnancies. ScRNA-seq of embryonic heart tissues from a mouse model of maternal hyperglycemia (matHG) provides further insight into how matHG disrupts heart development and perturbs second heart field derived cardiomyocyte differentiation.
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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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Ke ZP, Zhang GF, Guo YH, Sun YM, Wang J, Li N, Qiu XB, Xu YJ, Yang YQ. A novel PRRX1 loss-of-function variation contributing to familial atrial fibrillation and congenital patent ductus arteriosus. Genet Mol Biol 2022; 45:e20210378. [PMID: 35377386 PMCID: PMC8978609 DOI: 10.1590/1678-4685-gmb-2021-0378] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/25/2022] [Indexed: 12/27/2022] Open
Abstract
Atrial fibrillation (AF) represents the most common type of sustained cardiac arrhythmia in humans and confers a significantly increased risk for thromboembolic stroke, congestive heart failure and premature death. Aggregating evidence emphasizes the predominant genetic defects underpinning AF and an increasing number of deleterious variations in more than 50 genes have been involved in the pathogenesis of AF. Nevertheless, the genetic basis underlying AF remains incompletely understood. In the current research, by whole-exome sequencing and Sanger sequencing analysis in a family with autosomal-dominant AF and congenital patent ductus arteriosus (PDA), a novel heterozygous variation in the PRRX1 gene encoding a homeobox transcription factor critical for cardiovascular development, NM_022716.4:c.373G>T;p.(Glu125*), was identified to be in co-segregation with AF and PDA in the whole family. The truncating variation was not detected in 306 unrelated healthy individuals employed as controls. Quantitative biological measurements with a reporter gene analysis system revealed that the Glu125*-mutant PRRX1 protein failed to transactivate its downstream target genes SHOX2 and ISL1, two genes that have been causally linked to AF. Conclusively, the present study firstly links PRRX1 loss-of-function variation to AF and PDA, suggesting that AF and PDA share a common abnormal developmental basis in a proportion of cases.
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Affiliation(s)
| | | | - Yu-Han Guo
- Fudan University, China; Fudan University, China
| | | | | | - Ning Li
- Shanghai Jiao Tong University, China
| | | | - Ying-Jia Xu
- Fudan University, China; Fudan University, China
| | - Yi-Qing Yang
- Fudan University, China; Fudan University, China; Fudan University, China; Fudan University, China
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Ren J, Miao D, Li Y, Gao R. Spotlight on Isl1: A Key Player in Cardiovascular Development and Diseases. Front Cell Dev Biol 2021; 9:793605. [PMID: 34901033 PMCID: PMC8656156 DOI: 10.3389/fcell.2021.793605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/10/2021] [Indexed: 02/01/2023] Open
Abstract
Cardiac transcription factors orchestrate a regulatory network controlling cardiovascular development. Isl1, a LIM-homeodomain transcription factor, acts as a key player in multiple organs during embryonic development. Its crucial roles in cardiovascular development have been elucidated by extensive studies, especially as a marker gene for the second heart field progenitors. Here, we summarize the roles of Isl1 in cardiovascular development and function, and outline its cellular and molecular modes of action, thus providing insights for the molecular basis of cardiovascular diseases.
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Affiliation(s)
- Jie Ren
- Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, China
| | - Danxiu Miao
- Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, China.,Department of Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Yanshu Li
- Department of Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Rui Gao
- Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, China
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Khatami M, Ghorbani S, Adriani MR, Bahaloo S, Naeini MA, Heidari MM, Hadadzadeh M. Novel Point Mutations in 3'-Untranslated Region of GATA4 Gene Are Associated with Sporadic Non-syndromic Atrial and Ventricular Septal Defects. Curr Med Sci 2021; 42:129-143. [PMID: 34652630 DOI: 10.1007/s11596-021-2428-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 01/14/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Transcription factor GATA4 has significant roles in embryonic heart development. Mutations of GATA4 appear to be responsible for a wide variety of congenital heart defects (CHD). Despite the high prevalence of GATA4 mutations in CHD phenotypes, extensive studies have not been performed. The 3'-untranslated region (3'-UTR) of the GATA4 gene comprises regulatory motifs and microRNA binding sites that are critical for the appropriate gene expression, nuclear transportation, and regulation of translation, and stability of mRNA. This study aimed to evaluate the association between mutations in the 3'-UTR of the GATA4 gene and CHD risk among Iranian patients. METHODS We analyzed the coding region of exon 6 and the whole 3'-UTR of GATA4 in DNA isolated from 175 blood samples of CHD patients and 115 unrelated healthy individuals. The functional importance of the observed GATA4 mutations was evaluated using a variety of bioinformatics algorithms for assessment of nonsynonymous mutations and those observed in miRNA binding sites of 3'-UTR. RESULTS Twenty-one point mutations including one missense mutation (c.511A>G: p.Ser377Gly) in exon 6 and 20 nucleotide variations in 3'-UTR of GATA4 gene were identified in 65 of the 175 CHD patients. In our patients, we identified 12 novel sequence alterations and 8 single nucleotide polymorphisms in the 3'-UTR of GATA4. Most of them had statistically significant differences between CHD patients and controls. CONCLUSION Our results suggest that 3'-UTR variations of the GATA4 gene probably change microRNA binding sites and present an additional molecular risk factor for the susceptibility of CHD.
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Affiliation(s)
- Mehri Khatami
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran.
| | - Sajedeh Ghorbani
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | | | - Sahar Bahaloo
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | - Mehri Azami Naeini
- Department of Biology, Faculty of Science, Yazd University, Yazd, 8915818411, Iran
| | | | - Mehdi Hadadzadeh
- Department of Cardiac Surgery, Afshar Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, 8915887856, Iran
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Transcriptional Regulation of Postnatal Cardiomyocyte Maturation and Regeneration. Int J Mol Sci 2021; 22:ijms22063288. [PMID: 33807107 PMCID: PMC8004589 DOI: 10.3390/ijms22063288] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/17/2022] Open
Abstract
During the postnatal period, mammalian cardiomyocytes undergo numerous maturational changes associated with increased cardiac function and output, including hypertrophic growth, cell cycle exit, sarcomeric protein isoform switching, and mitochondrial maturation. These changes come at the expense of loss of regenerative capacity of the heart, contributing to heart failure after cardiac injury in adults. While most studies focus on the transcriptional regulation of embryonic or adult cardiomyocytes, the transcriptional changes that occur during the postnatal period are relatively unknown. In this review, we focus on the transcriptional regulators responsible for these aspects of cardiomyocyte maturation during the postnatal period in mammals. By specifically highlighting this transitional period, we draw attention to critical processes in cardiomyocyte maturation with potential therapeutic implications in cardiovascular disease.
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Miyamoto M, Gangrade H, Tampakakis E. Understanding Heart Field Progenitor Cells for Modeling Congenital Heart Diseases. Curr Cardiol Rep 2021; 23:38. [PMID: 33694131 DOI: 10.1007/s11886-021-01468-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/11/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE OF REVIEW Heart development is a meticulously coordinated process that involves the specification of two distinct populations of cardiac progenitor cells, namely the first and the second heart field. Disruption of heart field progenitors can result in congenital heart defects. In this review, we aim to describe the signaling pathways and transcription factors that link heart field development and congenital heart disease. RECENT FINDINGS Single-cell transcriptomics, lineage-tracing mouse models, and stem cell-based in vitro modeling of cardiogenesis have significantly improved the spatiotemporal characterization of cardiac progenitors. Additionally, novel functional genomic studies have now linked more genetic variants with congenital heart disease. Dysregulation of cardiac progenitor cells causes malformations that can be lethal. Ongoing research will continue to shed light on cardiac morphogenesis and help us better understand and treat patients with congenital heart disease.
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Affiliation(s)
- Matthew Miyamoto
- Department of Medicine, Division of Cardiology, Johns Hopkins University, 720 Rutland Avenue, Ross 835, Baltimore, MD, 21205, USA
| | - Harshi Gangrade
- Department of Medicine, Division of Cardiology, Johns Hopkins University, 720 Rutland Avenue, Ross 835, Baltimore, MD, 21205, USA
| | - Emmanouil Tampakakis
- Department of Medicine, Division of Cardiology, Johns Hopkins University, 720 Rutland Avenue, Ross 835, Baltimore, MD, 21205, USA.
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Varshney A, Chahal G, Santos L, Stolper J, Hallab JC, Nim HT, Nikolov M, Yip A, Ramialison M. Human Cardiac Transcription Factor Networks. SYSTEMS MEDICINE 2021. [DOI: 10.1016/b978-0-12-801238-3.11597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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13
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Jiang WF, Xu YJ, Zhao CM, Wang XH, Qiu XB, Liu X, Wu SH, Yang YQ. A novel TBX5 mutation predisposes to familial cardiac septal defects and atrial fibrillation as well as bicuspid aortic valve. Genet Mol Biol 2020; 43:e20200142. [PMID: 33306779 PMCID: PMC7783509 DOI: 10.1590/1678-4685-gmb-2020-0142] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 09/19/2020] [Indexed: 02/06/2023] Open
Abstract
TBX5 has been linked to Holt-Oram syndrome, with congenital heart defect (CHD) and atrial fibrillation (AF) being two major cardiac phenotypes. However, the prevalence of a TBX5 variation in patients with CHD and AF remains obscure. In this research, by sequencing analysis of TBX5 in 178 index patients with both CHD and AF, a novel heterozygous variation, NM_000192.3: c.577G>T; p.(Gly193*), was identified in one index patient with CHD and AF as well as bicuspid aortic valve (BAV), with an allele frequency of approximately 0.28%. Genetic analysis of the proband's pedigree showed that the variation co-segregated with the diseases. The pathogenic variation was not detected in 292 unrelated healthy subjects. Functional analysis by using a dual-luciferase reporter assay system showed that the Gly193*-mutant TBX5 protein failed to transcriptionally activate its target genes MYH6 and NPPA. Moreover, the mutation nullified the synergistic transactivation between TBX5 and GATA4 as well as NKX2-5. Additionally, whole-exome sequencing analysis showed no other genes contributing to the diseases. This investigation firstly links a pathogenic variant in the TBX5 gene to familial CHD and AF as well as BAV, suggesting that CHD and AF as well as BAV share a common developmental basis in a subset of patients.
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Affiliation(s)
- Wei-Feng Jiang
- Shanghai Jiao Tong University, Department of Cardiology, Shanghai Chest Hospital, Shanghai, China
| | - Ying-Jia Xu
- Fudan University, Department of Cardiology, Shanghai Fifth People's Hospital, Shanghai, China
| | - Cui-Mei Zhao
- Tongji University School of Medicine, Department of Cardiology, Tongji Hospital, Shanghai, China
| | - Xin-Hua Wang
- Shanghai Jiao Tong University School of Medicine, Department of Cardiology, Renji Hospital, Shanghai, China
| | - Xing-Biao Qiu
- Shanghai Jiao Tong University, Department of Cardiology, Shanghai Chest Hospital, Shanghai, China
| | - Xu Liu
- Shanghai Jiao Tong University, Department of Cardiology, Shanghai Chest Hospital, Shanghai, China
| | - Shao-Hui Wu
- Shanghai Jiao Tong University, Department of Cardiology, Shanghai Chest Hospital, Shanghai, China
| | - Yi-Qing Yang
- Fudan University, Department of Cardiology, Shanghai Fifth People's Hospital, Shanghai, China.,Fudan University, Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Shanghai, China.,Fudan University, Central Laboratory, Shanghai Fifth People's Hospital, Shanghai, China
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Wu SH, Wang XH, Xu YJ, Gu JN, Yang CX, Qiao Q, Guo XJ, Guo YH, Qiu XB, Jiang WF, Yang YQ. ISL1 loss-of-function variation causes familial atrial fibrillation. Eur J Med Genet 2020; 63:104029. [PMID: 32771629 DOI: 10.1016/j.ejmg.2020.104029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 07/23/2020] [Accepted: 07/31/2020] [Indexed: 02/08/2023]
Abstract
Atrial fibrillation (AF) represents the most frequent form of sustained cardiac rhythm disturbance, affecting approximately 1% of the general population worldwide, and confers a substantially enhanced risk of cerebral stroke, heart failure, and death. Increasing epidemiological studies have clearly demonstrated a strong genetic basis for AF, and variants in a wide range of genes, including those coding for ion channels, gap junction channels, cardiac structural proteins and transcription factors, have been identified to underlie AF. Nevertheless, the genetic pathogenesis of AF is complex and still far from completely understood. Here, whole-exome sequencing and bioinformatics analyses of a three-generation family with AF were performed, and after filtering variants by multiple metrics, we identified a heterozygous variant in the ISL1 gene (encoding a transcription factor critical for embryonic cardiogenesis and postnatal cardiac remodeling), NM_002202.2: c.481G > T; p.(Glu161*), which was validated by Sanger sequencing and segregated with autosome-dominant AF in the family with complete penetrance. The nonsense variant was absent from 284 unrelated healthy individuals used as controls. Functional assays with a dual-luciferase reporter assay system revealed that the truncating ISL1 protein lost transcriptional activation on the verified target genes MEF2C and NKX2-5. Additionally, the variant nullified the synergistic transactivation between ISL1 and TBX5 as well as GATA4, two other transcription factors that have been implicated in AF. The findings suggest ISL1 as a novel gene contributing to AF, which adds new insight to the genetic mechanisms underpinning AF, implying potential implications for genetic testing and risk stratification of the AF family members.
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Affiliation(s)
- Shao-Hui Wu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xin-Hua Wang
- Department of Cardiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Jia-Ning Gu
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Chen-Xi Yang
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Qi Qiao
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Xiao-Juan Guo
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Yu-Han Guo
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Wei-Feng Jiang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Central Laboratory, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.
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15
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Zhang Y, Sun YM, Xu YJ, Zhao CM, Yuan F, Guo XJ, Guo YH, Yang CX, Gu JN, Qiao Q, Wang J, Yang YQ. A New TBX5 Loss-of-Function Mutation Contributes to Congenital Heart Defect and Atrioventricular Block. Int Heart J 2020; 61:761-768. [DOI: 10.1536/ihj.19-650] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yan Zhang
- Department of Cardiology, Shanghai Jing'an District Central Hospital, Fudan University
| | - Yu-Min Sun
- Department of Cardiology, Shanghai Jing'an District Central Hospital, Fudan University
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Cui-Mei Zhao
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine
| | - Fang Yuan
- Department of Cardiology, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine
| | - Xiao-Juan Guo
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Yu-Han Guo
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Chen-Xi Yang
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Jia-Ning Gu
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Qi Qiao
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
| | - Jun Wang
- Department of Cardiology, Shanghai Jing'an District Central Hospital, Fudan University
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People's Hospital, Fudan University
- Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University
- Central Laboratory, Shanghai Fifth People's Hospital, Fudan University
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16
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Di RM, Yang CX, Zhao CM, Yuan F, Qiao Q, Gu JN, Li XM, Xu YJ, Yang YQ. Identification and functional characterization of KLF5 as a novel disease gene responsible for familial dilated cardiomyopathy. Eur J Med Genet 2020; 63:103827. [DOI: 10.1016/j.ejmg.2019.103827] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/25/2019] [Accepted: 12/14/2019] [Indexed: 02/08/2023]
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17
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Loid P, Mustila T, Mäkitie RE, Viljakainen H, Kämpe A, Tossavainen P, Lipsanen-Nyman M, Pekkinen M, Mäkitie O. Rare Variants in Genes Linked to Appetite Control and Hypothalamic Development in Early-Onset Severe Obesity. Front Endocrinol (Lausanne) 2020; 11:81. [PMID: 32153512 PMCID: PMC7047210 DOI: 10.3389/fendo.2020.00081] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 02/07/2020] [Indexed: 12/11/2022] Open
Abstract
Context: The hypothalamic circuit has an essential role in the regulation of appetite and energy expenditure. Pathogenic variants in genes involved in the hypothalamic leptin-melanocortin pathway, including melanocortin-4-receptor (MC4R), have been associated with monogenic obesity. Objective: To determine the rate and spectrum of rare variants in genes involved in melanocortin pathway or hypothalamic development in patients with severe early-onset obesity (height-adjusted weight >60% before age 10 years). Methods: We used a custom-made targeted exome sequencing panel to assess peripheral blood DNA samples for rare (minor allele frequency <0.5%), pathogenic/likely pathogenic variants in 24 genes related to the hypothalamic circuit in 92 subjects (51% males, median age 13.7 years) with early-onset severe obesity (median body mass index (BMI) Z-score + 4.0). Results: We identified a novel frameshift deletion in MC4R (p.V103Afs5*) in two unrelated patients and a previously reported MC4R variant (p.T112M) in one patient. In addition, we identified rare heterozygous missense variants in ADCY3 (p.G1110R), MYT1L (p.R807Q), ISL1 (p.I347F), LRP2 (p.R2479I, and p.N3315S) and a hemizygous missense variant in GRPR (p.L87M) (each in one patient), possibly contributing to the obesity phenotype in these patients. Altogether 8 % (7/92) of the subjects had rare pathogenic/likely pathogenic variants in the studied genes. Conclusions: Rare genetic variants within the hypothalamic circuit are prevalent and contribute to the development of severe early-onset obesity. Targeted exome sequencing is useful in identifying affected subjects. Further studies are needed to evaluate the variants' clinical significance and to define optimal treatment.
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Affiliation(s)
- Petra Loid
- Children's Hospital, Helsinki University Hospital, Helsinki, Finland
- Folkhälsan Research Center, Genetics Research Program, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- *Correspondence: Petra Loid
| | - Taina Mustila
- Department of Pediatrics, Seinäjoki Central Hospital, Seinäjoki, Finland
- City of Turku, Welfare Division, Preventive Healthcare, Turku, Finland
| | - Riikka E. Mäkitie
- Folkhälsan Research Center, Genetics Research Program, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Molecular Endocrinology Laboratory, Department of Medicine, Hammersmith Campus, Imperial College London, London, United Kingdom
| | - Heli Viljakainen
- Folkhälsan Research Center, Genetics Research Program, Helsinki, Finland
- The Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Anders Kämpe
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Päivi Tossavainen
- Department of Children and Adolescents, PEDEGO Research Unit, University of Oulu, Oulu, Finland
| | - Marita Lipsanen-Nyman
- Children's Hospital, Helsinki University Hospital, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Minna Pekkinen
- Children's Hospital, Helsinki University Hospital, Helsinki, Finland
- Folkhälsan Research Center, Genetics Research Program, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Outi Mäkitie
- Children's Hospital, Helsinki University Hospital, Helsinki, Finland
- Folkhälsan Research Center, Genetics Research Program, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
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18
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Ding Z, Yang W, Yi K, Ding Y, Zhou D, Xie X, You T. Correlations between ISL1 rs1017 polymorphism and congenital heart disease risk: A PRISMA-compliant meta-analysis. Medicine (Baltimore) 2020; 99:e18715. [PMID: 31914083 PMCID: PMC6959884 DOI: 10.1097/md.0000000000018715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND ISL1 promotes cardiomyocyte differentiation and plays important roles in heart development. However, whether ISL1 rs1017 polymorphism is associated with the congenital heart disease (CHD) risk remains controversial. METHODS Five database including PubMed, Cochrane Library, ISI Web of Science, CNKI, and Wan Fang were searched by using key words "Insulin Gene Enhancer Protein ISL1" and "Single Nucleotide Polymorphism," and "Congenital Heart Disease." Five relative articles including 6 independent studies containing 2132 cases and 3812 controls were finally recruited to our study. Meta-analyses were performed by pooling odds ratios (ORs) and 95% confidence interval (CI) from included studies using STATA 12.0 software. RESULTS The associations between ISL1 rs1017 polymorphism and the risk of CHD were statistically significant under the allele model (T vs A; OR: 1.421; 95% CI: 1.072-1.882), heterozygous model (AT vs AA; OR: 1.342; 95% CI: 1.019-1.767), and dominant model (AT+ TT vs AA; OR: 1.466; 95% CI: 1.059-2.028). Sensitivity analysis indicated that the results were not stable. Subgroup analysis demonstrated that associations were found in Caucasians under the allele model and the heterozygous model (P < .05), but not the dominant model (P > .05). CONCLUSION In summary, our meta-analysis results suggest that the T allele of ISL1 rs1017 is a risk factor for CHD. However, further studies based on large sample size and multi-ethnic population should be conducted to further prove this correlation.
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Affiliation(s)
- Zhaohong Ding
- Gansu Provincial Hospital
- Congenital Heart Disease Diagnosis and Treatment Gansu Province International Science and Technology Cooperation Base
| | - Wenke Yang
- School of Basic Medical Science, Lanzhou University, Lanzhou, China
| | - Kang Yi
- Gansu Provincial Hospital
- Congenital Heart Disease Diagnosis and Treatment Gansu Province International Science and Technology Cooperation Base
| | - Yunhan Ding
- School of Basic Medical Science, Lanzhou University, Lanzhou, China
| | | | - Xiaodong Xie
- School of Basic Medical Science, Lanzhou University, Lanzhou, China
| | - Tao You
- Gansu Provincial Hospital
- Congenital Heart Disease Diagnosis and Treatment Gansu Province International Science and Technology Cooperation Base
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19
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Wang Z, Song HM, Wang F, Zhao CM, Huang RT, Xue S, Li RG, Qiu XB, Xu YJ, Liu XY, Yang YQ. A New ISL1 Loss-of-Function Mutation Predisposes to Congenital Double Outlet Right Ventricle. Int Heart J 2019; 60:1113-1122. [DOI: 10.1536/ihj.18-685] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Zhi Wang
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine
| | - Hao-Ming Song
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine
| | - Fei Wang
- Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine
| | - Cui-Mei Zhao
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine
| | - Ri-Tai Huang
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Song Xue
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Ruo-Gu Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University
| | - Ying-Jia Xu
- Department of Cardiology, The Fifth People's Hospital of Shanghai, Fudan University
| | - Xing-Yuan Liu
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine
| | - Yi-Qing Yang
- Department of Cardiology, The Fifth People's Hospital of Shanghai, Fudan University
- Department of Cardiovascular Research Laboratory, The Fifth People's Hospital of Shanghai, Fudan University
- Department of Central Laboratory, The Fifth People's Hospital of Shanghai, Fudan University
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