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Wang RY, Xiong Q, Chang SH, Jin JY, Xiang R, Zeng L, Yu F. Identification of truncated variants in GLI family zinc finger 3 (GLI3) associated with polydactyly. J Orthop Surg Res 2024; 19:449. [PMID: 39080720 PMCID: PMC11287838 DOI: 10.1186/s13018-024-04928-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Accepted: 07/17/2024] [Indexed: 08/03/2024] Open
Abstract
BACKGROUND Polydactyly is a prevalent congenital anomaly with an incidence of 2.14 per 1000 live births in China. GLI family zinc finger 3 (GLI3) is a classical causative gene of polydactyly, and serves as a pivotal transcription factor in the hedgehog signaling pathway, regulating the development of the anterior-posterior axis in limbs. METHODS Three pedigrees of polydactyly patients were enrolled from Hunan Province, China. Pathogenic variants were identified by whole-exome sequencing (WES) and Sanger sequencing. RESULTS Three variants in GLI3 were identified in three unrelated families, including a novel deletion variant (c.1372del, p.Thr458GlnfsTer44), a novel insertion-deletion (indel) variant (c.1967_1968delinsAA, p.Ser656Ter), and a nonsense variant (c.2374 C > T, p.Arg792Ter). These variants were present exclusively in patients but not in healthy individuals. CONCLUSIONS We identified three pathogenic GLI3 variants in polydactyly patients, broadening the genetic spectrum of GLI3 and contributing significantly to genetic counseling and diagnosis for polydactyly.
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Affiliation(s)
- Run-Yan Wang
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China
- School of Life Sciences, Central South University, Changsha, 410000, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Qin Xiong
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Si-Hua Chang
- School of Life Sciences, Central South University, Changsha, 410000, China
| | - Jie-Yuan Jin
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Rong Xiang
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China
- School of Life Sciences, Central South University, Changsha, 410000, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Lei Zeng
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China.
- Microsurgery & Reconstruction Research Center, Xiangya Hospital, Central South University, Changsha, 410000, China.
| | - Fang Yu
- Department of Hand and Microsurgery, Xiangya Hospital, Central South University, Changsha, 410000, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410000, China.
- Microsurgery & Reconstruction Research Center, Xiangya Hospital, Central South University, Changsha, 410000, China.
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Shemarova I. The Dysfunction of Ca 2+ Channels in Hereditary and Chronic Human Heart Diseases and Experimental Animal Models. Int J Mol Sci 2023; 24:15682. [PMID: 37958665 PMCID: PMC10650855 DOI: 10.3390/ijms242115682] [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: 09/11/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Chronic heart diseases, such as coronary heart disease, heart failure, secondary arterial hypertension, and dilated and hypertrophic cardiomyopathies, are widespread and have a fairly high incidence of mortality and disability. Most of these diseases are characterized by cardiac arrhythmias, conduction, and contractility disorders. Additionally, interruption of the electrical activity of the heart, the appearance of extensive ectopic foci, and heart failure are all symptoms of a number of severe hereditary diseases. The molecular mechanisms leading to the development of heart diseases are associated with impaired permeability and excitability of cell membranes and are mainly caused by the dysfunction of cardiac Ca2+ channels. Over the past 50 years, more than 100 varieties of ion channels have been found in the cardiovascular cells. The relationship between the activity of these channels and cardiac pathology, as well as the general cellular biological function, has been intensively studied on several cell types and experimental animal models in vivo and in situ. In this review, I discuss the origin of genetic Ca2+ channelopathies of L- and T-type voltage-gated calcium channels in humans and the role of the non-genetic dysfunctions of Ca2+ channels of various types: L-, R-, and T-type voltage-gated calcium channels, RyR2, including Ca2+ permeable nonselective cation hyperpolarization-activated cyclic nucleotide-gated (HCN), and transient receptor potential (TRP) channels, in the development of cardiac pathology in humans, as well as various aspects of promising experimental studies of the dysfunctions of these channels performed on animal models or in vitro.
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Affiliation(s)
- Irina Shemarova
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, 194223 Saint-Petersburg, Russia
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Du R, Liu J, Hu Y, Peng S, Fan L, Xiang R, Huang H. Novel heterozygous mutation in COL4A4 responsible for Alport syndrome in a Chinese family. Front Genet 2022; 13:899006. [PMID: 36159970 PMCID: PMC9501878 DOI: 10.3389/fgene.2022.899006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Chronic kidney disease, a global public health problem, results in kidney damage or a gradual decline in the glomerular filtration rate. Alport syndrome is commonly characterized by chronic glomerulonephritis caused by a structural disorder in the glomerular basement membrane. Currently, three disease-causing genes, namely collagen type IV alpha 3–5 (COL4A3, COL4A4, and COL4A5), have been associated with the occurrence of Alport syndrome. Methods: We enrolled a Chinese family where the affected individuals suffered from recurrent hematuria and proteinuria. The proband was selected for whole-exome sequencing to identify the pathogenic mutations in this family. Results: After data filtering, a novel heterozygous COL4A4 variant (NM_000092: c.853G>A/p. G285A) was identified as the putative genetic lesion in the affected individuals. Further co-segregation analysis using Sanger sequencing confirmed that this novel COL4A4 mutation (c.853G>A/p. G285A) exists only in the affected individuals and is absent in other healthy family members as well as in the control cohort of 200 individuals from the same locality. According to American College of Medical Genetics and Genomics guidelines, the mutation was classified as ‘potentially pathogenic’. A bioinformatics-based prediction analysis revealed that this mutation is pathogenic and may disrupt the structure and function of type IV collagen. This variant is located at an evolutionarily conserved site of COL4A4. Conclusion: In this study, we identified a novel heterozygous COL4A4 variant (c.853G>A) in a Chinese AS family and assisted to diagnose this AS proband as autosomal-dominant Alport syndrome (ADAS). Our study expands the spectrum of Alport syndrome mutations and contributes to the genetic counseling and diagnosis of patients with Alport syndrome.
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Affiliation(s)
- Ran Du
- Department of Nephrology, The Third Xiangya Hospital Central South University, Changsha, China
- Department of Cell Biology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - Jishi Liu
- Department of Nephrology, The Third Xiangya Hospital Central South University, Changsha, China
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - Yiqiao Hu
- Department of Cell Biology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
| | - Song Peng
- Department of Radiology, The Third Xiangya Hospital Central South University, Changsha, China
| | - Liangliang Fan
- Department of Nephrology, The Third Xiangya Hospital Central South University, Changsha, China
- Department of Cell Biology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - Rong Xiang
- Department of Nephrology, The Third Xiangya Hospital Central South University, Changsha, China
- Department of Cell Biology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
| | - Hao Huang
- Department of Nephrology, The Third Xiangya Hospital Central South University, Changsha, China
- Department of Cell Biology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Organ Fibrosis, Central South University, Changsha, China
- *Correspondence: Hao Huang,
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In Vitro Drug Screening Using iPSC-Derived Cardiomyocytes of a Long QT-Syndrome Patient Carrying KCNQ1 & TRPM4 Dual Mutation: An Experimental Personalized Treatment. Cells 2022; 11:cells11162495. [PMID: 36010573 PMCID: PMC9406448 DOI: 10.3390/cells11162495] [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: 05/21/2022] [Revised: 06/24/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
Congenital long QT syndrome is a type of inherited cardiovascular disorder characterized by prolonged QT interval. Patient often suffer from syncopal episodes, electrocardiographic abnormalities and life-threatening arrhythmia. Given the complexity of the root cause of the disease, a combination of clinical diagnosis and drug screening using patient-derived cardiomyocytes represents a more effective way to identify potential cures. We identified a long QT syndrome patient carrying a heterozygous KCNQ1 c.656G>A mutation and a heterozygous TRPM4 c.479C>T mutation. Implantation of implantable cardioverter defibrillator in combination with conventional medication demonstrated limited success in ameliorating long-QT-syndrome-related symptoms. Frequent defibrillator discharge also caused deterioration of patient quality of life. Aiming to identify better therapeutic agents and treatment strategy, we established a patient-specific iPSC line carrying the dual mutations and differentiated these patient-specific iPSCs into cardiomyocytes. We discovered that both verapamil and lidocaine substantially shortened the QT interval of the long QT syndrome patient-specific cardiomyocytes. Verapamil treatment was successful in reducing defibrillator discharge frequency of the KCNQ1/TRPM4 dual mutation patient. These results suggested that verapamil and lidocaine could be alternative therapeutic agents for long QT syndrome patients that do not respond well to conventional treatments. In conclusion, our approach indicated the usefulness of the in vitro disease model based on patient-specific iPSCs in identifying pharmacological mechanisms and drug screening. The long QT patient-specific iPSC line carrying KCNQ1/TRPM4 dual mutations also represents a tool for further understanding long QT syndrome pathogenesis.
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Wang Z, Qiao XH, Xu YJ, Liu XY, Huang RT, Xue S, Qiu HY, Yang YQ. SMAD1 Loss-of-Function Variant Responsible for Congenital Heart Disease. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9916325. [PMID: 35281600 PMCID: PMC8913148 DOI: 10.1155/2022/9916325] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/16/2022] [Indexed: 12/22/2022]
Abstract
As the most common form of developmental malformation affecting the heart and endothoracic great vessels, congenital heart disease (CHD) confers substantial morbidity and mortality as well as socioeconomic burden on humans globally. Aggregating convincing evidence highlights the genetic origin of CHD, and damaging variations in over 100 genes have been implicated with CHD. Nevertheless, the genetic basis underpinning CHD remains largely elusive. In this study, via whole-exosome sequencing analysis of a four-generation family inflicted with autosomal-dominant CHD, a heterozygous SMAD1 variation, NM_005900.3: c.264C > A; p.(Tyr88∗), was detected and validated by Sanger sequencing analysis to be in cosegregation with CHD in the whole family. The truncating variation was not observed in 362 unrelated healthy volunteers employed as control persons. Dual-luciferase reporter gene assay in cultured COS7 cells demonstrated that Tyr88∗-mutant SMAD1 failed to transactivate the genes TBX20 and NKX2.5, two already well-established CHD-causative genes. Additionally, the variation nullified the synergistic transcriptional activation between SMAD1 and MYOCD, another recognized CHD-causative gene. These data indicate SMAD1 as a new gene responsible for CHD, which provides new insight into the genetic mechanism underlying CHD, suggesting certain significance for genetic risk assessment and precise antenatal prevention of the family members inflicted with CHD.
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Affiliation(s)
- Zhi Wang
- Department of Pediatric Internal Medicine, Ningbo Women & Children's Hospital, Ningbo 315031, China
| | - Xiao-Hui Qiao
- Department of Pediatric Internal Medicine, Ningbo Women & Children's Hospital, Ningbo 315031, China
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
| | - Xing-Yuan Liu
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Ri-Tai Huang
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Song Xue
- Department of Cardiovascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Hai-Yan Qiu
- Department of Pediatric Internal Medicine, Ningbo Women & Children's Hospital, Ningbo 315031, China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
- Department of Cardiovascular Research Laboratory, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
- Department of Central Laboratory, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
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Palladino A, Papa AA, Petillo R, Scutifero M, Morra S, Passamano L, Nigro V, Politano L. The Role of TRPM4 Gene Mutations in Causing Familial Progressive Cardiac Conduction Disease: A Further Contribution. Genes (Basel) 2022; 13:genes13020258. [PMID: 35205305 PMCID: PMC8871839 DOI: 10.3390/genes13020258] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 12/22/2022] Open
Abstract
Progressive cardiac conduction disease (PCCD) is a relatively common condition in young and elderly populations, related to rare mutations in several genes, including SCN5A, SCN1B, LMNA and GJA5, TRPM4. Familial cases have also been reported. We describe a family with a large number of individuals necessitating pacemaker implantation, likely due to varying degrees of PCCD. The proband is a 47-year-old-patient, whose younger brother died at 25 years of unexplained sudden cardiac death. Three paternal uncles needed a pacemaker (PM) implantation between 40 and 65 years for unspecified causes. At the age of 42, he was implanted with a PM for two episodes of syncope and the presence of complete atrioventricular block (AVB). NGS analysis revealed the missense variation c. 2351G>A, p.Gly844Asp in the exon 17 of the TRPM4 gene. This gene encodes the TRPM4 channel, a calcium-activated nonselective cation channel of the transient receptor potential melastatin (TRPM) ion channel family. Variations in TRPM4 have been shown to cause an increase in cell surface current density, which results in a gain of gene function. Our report broadens and supports the causative role of TRPM4 gene mutations in PCCD. Genetic screening and identification of the causal mutation are critical for risk stratification and family counselling.
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Affiliation(s)
- Alberto Palladino
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
| | - Andrea Antonio Papa
- Division of Cardiology, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi Hospital, 80131 Naples, Italy;
| | - Roberta Petillo
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
| | - Marianna Scutifero
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
| | - Salvatore Morra
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
| | - Luigia Passamano
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
| | - Vincenzo Nigro
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, 80138 Naples, Italy;
| | - Luisa Politano
- Cardiomiology and Medical Genetics, University Hospital of Campania Luigi Vanvitelli, 80138 Naples, Italy; (A.P.); (R.P.); (M.S.); (S.M.); (L.P.)
- Correspondence:
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Pharmacological Modulation and (Patho)Physiological Roles of TRPM4 Channel-Part 2: TRPM4 in Health and Disease. Pharmaceuticals (Basel) 2021; 15:ph15010040. [PMID: 35056097 PMCID: PMC8779181 DOI: 10.3390/ph15010040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 02/06/2023] Open
Abstract
Transient receptor potential melastatin 4 (TRPM4) is a unique member of the TRPM protein family and, similarly to TRPM5, is Ca2+ sensitive and permeable for monovalent but not divalent cations. It is widely expressed in many organs and is involved in several functions; it regulates membrane potential and Ca2+ homeostasis in both excitable and non-excitable cells. This part of the review discusses the currently available knowledge about the physiological and pathophysiological roles of TRPM4 in various tissues. These include the physiological functions of TRPM4 in the cells of the Langerhans islets of the pancreas, in various immune functions, in the regulation of vascular tone, in respiratory and other neuronal activities, in chemosensation, and in renal and cardiac physiology. TRPM4 contributes to pathological conditions such as overactive bladder, endothelial dysfunction, various types of malignant diseases and central nervous system conditions including stroke and injuries as well as in cardiac conditions such as arrhythmias, hypertrophy, and ischemia-reperfusion injuries. TRPM4 claims more and more attention and is likely to be the topic of research in the future.
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