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Zodanu GKE, Hwang JH, Mehta Z, Sisniega C, Barsegian A, Kang X, Biniwale R, Si MS, Satou GM, Halnon N, Grody WW, Van Arsdell GS, Nelson SF, Touma M. High-Throughput Genomics Identify Novel FBN1/2 Variants in Severe Neonatal Marfan Syndrome and Congenital Heart Defects. Int J Mol Sci 2024; 25:5469. [PMID: 38791509 PMCID: PMC11122089 DOI: 10.3390/ijms25105469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/10/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Fibrillin-1 and fibrillin-2, encoded by FBN1 and FBN2, respectively, play significant roles in elastic fiber assembly, with pathogenic variants causing a diverse group of connective tissue disorders such as Marfan syndrome (MFS) and congenital contractural arachnodactyly (CCD). Different genomic variations may lead to heterogeneous phenotypic features and functional consequences. Recent high-throughput sequencing modalities have allowed detection of novel variants that may guide the care for patients and inform the genetic counseling for their families. We performed clinical phenotyping for two newborn infants with complex congenital heart defects. For genetic investigations, we employed next-generation sequencing strategies including whole-genome Single-Nucleotide Polymorphism (SNP) microarray for infant A with valvular insufficiency, aortic sinus dilatation, hydronephrosis, and dysmorphic features, and Trio whole-exome sequencing (WES) for infant B with dextro-transposition of the great arteries (D-TGA) and both parents. Infant A is a term male with neonatal marfanoid features, left-sided hydronephrosis, and complex congenital heart defects including tricuspid regurgitation, aortic sinus dilatation, patent foramen ovale, patent ductus arteriosus, mitral regurgitation, tricuspid regurgitation, aortic regurgitation, and pulmonary sinus dilatation. He developed severe persistent pulmonary hypertension and worsening acute hypercapnic hypoxemic respiratory failure, and subsequently expired on day of life (DOL) 10 after compassionate extubation. Cytogenomic whole-genome SNP microarray analysis revealed a deletion within the FBN1 gene spanning exons 7-30, which overlapped with the exon deletion hotspot region associated with neonatal Marfan syndrome. Infant B is a term male prenatally diagnosed with isolated D-TGA. He required balloon atrial septostomy on DOL 0 and subsequent atrial switch operation, atrial septal defect repair, and patent ductus arteriosus ligation on DOL 5. Trio-WES revealed compound heterozygous c.518C>T and c.8230T>G variants in the FBN2 gene. Zygosity analysis confirmed each of the variants was inherited from one of the parents who were healthy heterozygous carriers. Since his cardiac repair at birth, he has been growing and developing well without any further hospitalization. Our study highlights novel FBN1/FBN2 variants and signifies the phenotype-genotype association in two infants affected with complex congenital heart defects with and without dysmorphic features. These findings speak to the importance of next-generation high-throughput genomics for novel variant detection and the phenotypic variability associated with FBN1/FBN2 variants, particularly in the neonatal period, which may significantly impact clinical care and family counseling.
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Affiliation(s)
- Gloria K. E. Zodanu
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - John H. Hwang
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Zubin Mehta
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Carlos Sisniega
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Alexander Barsegian
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Xuedong Kang
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Reshma Biniwale
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Ming-Sing Si
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Gary M. Satou
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - Nancy Halnon
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
| | - UCLA Congenital Heart Defect BioCore Faculty
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
| | - Wayne W. Grody
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Glen S. Van Arsdell
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Stanley F. Nelson
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Marlin Touma
- Neonatal Congenital Heart Laboratory, Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (G.K.E.Z.); (J.H.H.); (Z.M.); (C.S.); (A.B.); (X.K.)
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (R.B.); (G.M.S.); (N.H.); (W.W.G.); (G.S.V.A.); (S.F.N.)
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA
- Children’s Discovery and Innovation Institute, University of California, Los Angeles, CA 90095, USA
- Eli and Edyth Broad Stem Cell Research Center, University of California, Los Angeles, CA 90095, USA
- Cardiovascular Research Laboratories, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
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Zhang RX, Wen Y, Guo DD, Xu FR, Wang GM, Wang XR, Shi YW, Ding J, Jiang Q, Jiang WJ, Jonas JB, Bi HS. Intravitreal injection of fibrillin 2 (Fbn2) recombinant protein for therapy of retinopathy in a retina-specific Fbn2 knock-down mouse model. Sci Rep 2023; 13:6865. [PMID: 37100863 PMCID: PMC10133334 DOI: 10.1038/s41598-023-33886-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 04/20/2023] [Indexed: 04/28/2023] Open
Abstract
Mutations in the extracellular matrix gene Fibrillin-2 (FBN2) are related to genetic macular degenerative disorders including age-related macular degeneration (AMD) and early-onset macular degeneration (EOMD). It was reported that the retinal protein expression of FBN2 was reduced in patients with AMD and EOMD. The effect of exogenously supplied fbn2 recombinant protein on fbn2-deficiency-related retinopathy was not known. Here we investigated the efficacy and molecular mechanism of intravitreally applied fibrin-2 recombinant protein in mice with fbn2-deficient retinopathy. The experimental study included groups (all n = 9) of adult C57BL/6J male mice which underwent no intervention, intravitreal injection of adeno-associated virus (AAV) empty vector or intravitreal injection of AAV-sh-fbn2 (adeno-associated virus for expressing short hairpin RNA for fibrillin-2) followed by three intravitreal injections of fbn2 recombinant protein, given in intervals of 8 days in doses of 0.30 μg, 0.75 μg, 1.50 μg, and 3.00 μg, respectively. Eyes with intravitreally applied AAV-sh-fbn2 as compared to eyes with injection of AAV-empty vector or developed an exudative retinopathy with involvement of the deep retinal layers, reduction in axial length and reduction in ERG amplitudes. After additional and repeated application of fbn2 recombinant protein, the retinopathy improved with an increase in retinal thickness and ERG amplitude, the mRNA and protein expression of transforming growth factor-beta (TGF-β1) and TGF-β binding protein (LTBP-1) increased, and axial length elongated, with the difference most marked for the dose of 0.75 μg of fbn2 recombinant protein. The observations suggest that intravitreally applied fbn2 recombinant protein reversed the retinopathy caused by an fbn2 knockdown.
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Affiliation(s)
- Rui Xue Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ying Wen
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Da Dong Guo
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases, Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong, Shandong Academy of Eye Disease Prevention and Therapy, Jinan, China
| | - Fu Ru Xu
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Gui Min Wang
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xing Rong Wang
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yong Wei Shi
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jie Ding
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qian Jiang
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wen Jun Jiang
- Shandong University of Traditional Chinese Medicine, Jinan, China.
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases, Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong, Shandong Academy of Eye Disease Prevention and Therapy, Jinan, China.
| | - Jost B Jonas
- Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, Mannheim, Germany.
| | - Hong Sheng Bi
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
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Li AL, He JQ, Zeng L, Hu YQ, Wang M, Long JY, Chang SH, Jin JY, Xiang R. Case report: Identification of novel fibrillin-2 variants impacting disulfide bond and causing congenital contractural arachnodactyly. Front Genet 2023; 14:1035887. [PMID: 36936417 PMCID: PMC10020613 DOI: 10.3389/fgene.2023.1035887] [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: 09/03/2022] [Accepted: 02/07/2023] [Indexed: 03/06/2023] Open
Abstract
Background: Congenital contractural arachnodactyly (CCA) is an autosomal dominant connective tissue disorder with clinical features of arthrogryposis, arachnodactyly, crumpled ears, scoliosis, and muscular hypoplasia. The heterozygous pathogenic variants in FBN2 have been shown to cause CCA. Fibrillin-2 is related to the elasticity of the tissue and has been demonstrated to play an important role in the constitution of extracellular microfibrils in elastic fibers, providing strength and flexibility to the connective tissue that sustains the body's joints and organs. Methods: We recruited two Chinese families with arachnodactyly and bilateral arthrogryposis of the fingers. Whole-exome sequencing (WES) and co-segregation analysis were employed to identify their genetic etiologies. Three-dimensional protein models were used to analyze the pathogenic mechanism of the identified variants. Results: We have reported two CCA families and identified two novel missense variants in FBN2 (NM_001999.3: c.4093T>C, p.C1365R and c.2384G>T, p.C795F). The structural models of the mutant FBN2 protein in rats exhibited that both the variants could break disulfide bonds. Conclusion: We detected two FBN2 variants in two families with CCA. Our description expands the genetic profile of CCA and emphasizes the pathogenicity of disulfide bond disruption in FBN2.
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Affiliation(s)
- An-Lei Li
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- School of Life Sciences, Central South University, Changsha, China
| | - Ji-Qiang He
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
| | - Lei Zeng
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
| | - Yi-Qiao Hu
- School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Min Wang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha, China
- Department of Nephrology, Xiangya Hospital of Central South University, Changsha, China
| | - Jie-Yi Long
- School of Life Sciences, Central South University, Changsha, China
| | - Si-Hua Chang
- School of Life Sciences, Central South University, Changsha, China
| | - Jie-Yuan Jin
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- *Correspondence: Jie-Yuan Jin, ; Rong Xiang,
| | - Rong Xiang
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, China
- School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
- *Correspondence: Jie-Yuan Jin, ; Rong Xiang,
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Bitarafan F, Razmara E, Khodaeian M, Keramatipour M, Kalhor A, Jafarinia E, Garshasbi M. Three Novel Variants identified in FBN1 and TGFBR2 in seven Iranian families with suspected Marfan syndrome. Mol Genet Genomic Med 2020; 8:e1274. [PMID: 32431097 PMCID: PMC7434737 DOI: 10.1002/mgg3.1274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/16/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Marfan syndrome (MFS) is a multi-systemic autosomal dominant disease of the connective tissue characterized by the early development of thoracic aneurysms/dissections, along with various manifestations of the ocular and skeletal systems. Due to the genetic and clinical heterogeneity, the clinical diagnosis of this disorder is challenging. Loss-of-function mutations in FBN1 (encodes fibrillin-1) lead to MFS type 1. Also, similar mutations in transforming growth factor β receptor 2 (TGFBR2) gene cause MFS type 2. Both proteins involve in TGF-β signaling. METHODS In this study, genetic screening using a panel involving 14 genes, especially FBN1 and TGFBR2, were performed on seven representatives affected members of seven unrelated Iranian families suspected with MFS. To confirm the variants, Sanger sequencing was applied to other affected/unaffected members of the families. RESULTS A total of 13 patients showed MFS manifestations. Using genetic screening, two novel and three previously reported variants in FBN1 were identified. We also detected two variants (a novel and a previously reported variant) in the TGFBR2 gene. CONCLUSION In this study, we introduce three novel variants identified through gene screening in seven Iranian MFS families. This report is expected to considerably improve genetic counseling for Iranian MFS families. Early precise molecular diagnosis can be helpful for better management and improving the life expectancy of these patients.
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Affiliation(s)
- Fatemeh Bitarafan
- Department of Cellular and Molecular Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Ehsan Razmara
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Teheran, Iran
| | | | - Mohammad Keramatipour
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Kalhor
- Department of medical science, Qom Branch, Islamic Azad University, Qom, Iran
| | - Ehsan Jafarinia
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Teheran, Iran
| | - Masoud Garshasbi
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Teheran, Iran
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Li J, Wang Y, Zhu X, Nie Y, Kuo Y, Guan S, Huang J, Lian Y, Zhao Y, Li R, Wei Y, Qiao J, Yan L. A novel pathogenic mutation in FBN2 associated with congenital contractural arachnodactyly for preimplantation genetic diagnosis. J Genet Genomics 2020; 47:281-284. [PMID: 32747207 DOI: 10.1016/j.jgg.2020.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/22/2020] [Accepted: 03/28/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Jiaxin Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Yuqian Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Xiaohui Zhu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Yanli Nie
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Ying Kuo
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Shuo Guan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Jin Huang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Ying Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Yangyu Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Rong Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Yuan Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Jie Qiao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100191, China; Beijing Advanced Innovation Center for Genomics, Peking University, Beijing 100191, China
| | - Liying Yan
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China.
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Zhou S, Wang F, Dou Y, Zhou J, Hao G, Xu C, Wang QK, Wang H, Wang P. A novel FBN2 mutation cosegregates with congenital contractural arachnodactyly in a five-generation Chinese family. Clin Case Rep 2018; 6:1612-1617. [PMID: 30147916 PMCID: PMC6099051 DOI: 10.1002/ccr3.1693] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/06/2018] [Accepted: 06/11/2018] [Indexed: 12/17/2022] Open
Abstract
We identified a novel heterozygous mutation (c.4177T>G and p.Cys1393Gly) in FBN2 that cosegregated with congenital contractural arachnodactyly (CCA) in a five-generation Chinese family. This mutation may cause the loss of the disulfide bond between Cys 1393 and Cys 1378 residues of fibrillin-2. Our study expands the genetic profile of CCA.
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Affiliation(s)
- Shiyuan Zhou
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Fengyu Wang
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Yongheng Dou
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Jiping Zhou
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Gefang Hao
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Chengqi Xu
- College of Life Science and Technology and Human Genome Research CenterHuazhong University of Science and TechnologyWuhanChina
| | - Qing K. Wang
- College of Life Science and Technology and Human Genome Research CenterHuazhong University of Science and TechnologyWuhanChina
| | - Haili Wang
- Henan Provincial Research Institute for Population and Family PlanningZhengzhouChina
- Key Laboratory of Birthdefects PreventionNational Health and Family Planning CommissionZhengzhouChina
| | - Pengyun Wang
- Department of Clinical LaboratoryLiyuan HospitalTongji Medical CollageHuazhong University of Science and TechnologyWuhanChina
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MiR-9-5p Down-Regulates PiT2, but not PiT1 in Human Embryonic Kidney 293 Cells. J Mol Neurosci 2017; 62:28-33. [PMID: 28303467 DOI: 10.1007/s12031-017-0906-0] [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: 09/23/2016] [Accepted: 02/27/2017] [Indexed: 10/20/2022]
Abstract
PiT1 (SLC20A1) and PiT2 (SLC20A2) are members of the mammalian type-III inorganic phosphate transporters and recent studies linked SLC20A2 mutations with primary brain calcifications. MicroRNAs (miRNAs) are endogenous noncoding regulatory RNAs and MicroRNA-9 (miR-9) modulates neurogenesis but is also involved with different types of cancer. We evaluated possible interactions between miR-9 and the phosphate transporters (PiT1 and PiT2). SLC20A2, platelet-derived growth factor receptor beta (PDGFRB) and Fibrillin-2 (FBN2) showed binding sites with high affinity for mir-9, In silico. miR-9 mimic was transfected into HEK293 cells and expression was confirmed by RT-qPCR. Overexpression of miR-9 in these cells caused a significant reduction in PiT2 and FBN2. PDGFRB appeared to be decreased, but was not significantly down-regulated. PiT1 showed no significant difference relative to controls. The down-regulation of PiT2 protein by miR-9 was confirmed by western blotting. In conclusion, we showed that miR-9 can down-regulate PiT2, in HEK293 cells. [corrected].
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Chen L, Diao Z, Xu Z, Zhou J, Wang W, Li J, Yan G, Sun H. The clinical application of preimplantation genetic diagnosis for the patient affected by congenital contractural arachnodactyly and spinal and bulbar muscular atrophy. J Assist Reprod Genet 2016; 33:1459-1466. [PMID: 27393415 DOI: 10.1007/s10815-016-0760-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 06/15/2016] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To investigate the usefulness of preimplantation genetic diagnosis (PGD) for the patient affected by congenital contractural arachnodactyly (CCA) and spinal and bulbar muscular atrophy (SBMA). METHODS Multiple displacement amplification (MDA) was performed for whole genome amplification (WGA) of biopsied trophectoderm (TE) cells. Direct mutation detection by sequencing and next-generation sequencing (NGS)-based single nucleotide polymorphism (SNP) haplotyping were used for CCA diagnosis. Direct sequencing of the PCR products and sex determination by amplification of sex-determining region Y (SRY) gene were used for SBMA diagnosis. After PGD, the unaffected blastocyst (B4) was transferred in the following frozen embryo transfer (FET). RESULTS In this PGD cycle, sixteen MII oocytes were inseminated by ICSI with testicular spermatozoa. Four blastocysts (B4, B5, B10, B13) were utilized for TE cell biopsy on day 5 after ICSI. After PGD, B4 was unaffected by CCA and SBMA. B5 was affected by CCA and carried SBMA. B10 was unaffected by CCA and carried SBMA. B13 was affected by CCA and unaffected by SBMA. B4 was the only unaffected blastocyst and transferred into the uterus for the subsequent FET cycle. The accuracy of PGD was confirmed by amniocentesis at 21 weeks of gestation. A healthy boy weighing 2850 g was born by cesarean section at the 38th week of gestation. CONCLUSIONS PGD is a valid screening tool for patienst affected of CCA and SBMA to prevent transmission of these genetic diseases from parents to children.
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Affiliation(s)
- Linjun Chen
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Zhenyu Diao
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Zhipeng Xu
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Jianjun Zhou
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Wanjun Wang
- Prenatal Diagnosis Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Jie Li
- Prenatal Diagnosis Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China
| | - Guijun Yan
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China.
| | - Haixiang Sun
- Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Nanjing, Jiangsu, 210008, China.
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