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Wang H, Ouyang G, Zhu Y. D348N Mutation of BFSP1 Gene in Congenital Cataract: it Does Matter. Cell Biochem Biophys 2023; 81:757-763. [PMID: 37667037 DOI: 10.1007/s12013-023-01169-6] [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] [Accepted: 08/18/2023] [Indexed: 09/06/2023]
Abstract
Beaded filament structural protein 1 (BFSP1) gene plays important role in the development of congenital cataract. We aimed to investigate and analyze the molecular mechanism of congenital cataract caused by D348N mutation of BFSP1 gene, and to provide evidence for the intervention of congenital cataract. BFSP1 and CP49 genes were cloned, wild type and mutant expression plasmids of BFSP1 were constructed and transfected into 293T cells. The BFSP1 wild type and mutant (D348N) gene sequence (NM_001195) were constructed into pEGFP-N1 vector by the restriction site NheI/KpnI. The effect of mutation on cell proliferation and apoptosis was analyzed. There was no significant change between the expression site of BFSP1 D348N mutation and the wild type. The expression of BFSP1 protein in wild group was higher than that in mutant group. CCK8 detection showed that the proliferation ability of 293T cells in mutant group was weaker than that in BFSP1 group. The mutation led to an increase in apoptosis. BFSP1 mutation significantly decreases the expression of BFSP1 protein, weakened the ability of cell proliferation and increased apoptosis. BFSP1 D348N mutation may be closely associated with congenital cataract and is of great significance to the investigations of the mechanism and intervention of congenital cataract.
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Affiliation(s)
- Han Wang
- Department of Ophthalmology, Dalian No.3 People's Hospital, Dalian, China.
| | - Gaoxiang Ouyang
- Department of Ophthalmology, Dalian No.3 People's Hospital, Dalian, China
| | - Ying Zhu
- Department of Ophthalmology, Dalian No.3 People's Hospital, Dalian, China.
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Wang KJ, Wang JX, Wang JD, Li M, Zhang JS, Mao YY, Wan XH. Congenital coralliform cataract is the predominant consequence of a recurrent mutation in the CRYGD gene. Orphanet J Rare Dis 2023; 18:200. [PMID: 37480084 PMCID: PMC10362579 DOI: 10.1186/s13023-023-02816-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 07/08/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Congenital cataract is a leading cause of treatable childhood blindness and both clinically and genetically heterogeneous. Among the already characterized phenotypes, coralliform cataract is a rare special form of congenital cataracts. Although previous studies had shown that mutations in the γD-crystallin (CRYGD) can result in congenital coralliform cataracts, no conclusive genotype-phenotype correlation might be drawn. Here we aimed to identify the spectrum and frequency of CRYGD gene mutations in congenital coralliform cataracts of Chinese origin. METHODS The medical records of 392 Chinese families with congenital cataracts were reviewed between January 2011 and December 2021. The families, clinically documented to have congenital coralliform cataracts, were screened for mutations in candidate CRYGD gene. The genomic DNA of all subjects was extracted from peripheral blood leukocytes. PCR amplified and direct sequencing were performed to identify the disease-causing mutation. RESULTS A total of 12 families with coralliform cataracts were recruited in this study in the past 10 years, accounting for 3.1% of the families with congenital cataracts. Of the 12 families, all affected individuals presented with bilateral non-progressive coralliform cataracts since birth, with the best-corrected Snellen visual acuities ranging from 20/200 to 20/25. A recurrent c.70 C > A (p. P24T) mutation in CRYGD was identified in 10 families (83.3%) with congenital cataract, which co-segregated with all affected individuals and was not observed in unaffected family members or ethnically matched normal controls. CONCLUSIONS The coralliform cataract is characterized by being bilateral, non-progressive and present at birth. A recurrent p.P24T CRYGD mutation occurs independently in 83.3% of the Chinese families with congenital coralliform cataracts and most likely represents a mutational hot spot, which underscore the relations between coralliform cataract and p.P24T CRYGD.
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Affiliation(s)
- Kai-Jie Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Jue-Xue Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Jin-Da Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Meng Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Jing-Shang Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Ying-Yan Mao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China
| | - Xiu-Hua Wan
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Lab, 100730, Beijing, China.
- NO.1 Dong Jiao Min Xiang, 100730, Beijing, China.
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Berry V, Ionides A, Georgiou M, Quinlan RA, Michaelides M. Multimorbidity due to novel pathogenic variants in the WFS1/RP1/NOD2 genes: autosomal dominant congenital lamellar cataract, retinitis pigmentosa and Crohn's disease in a British family. BMJ Open Ophthalmol 2023; 8:e001252. [PMID: 37493686 PMCID: PMC10351282 DOI: 10.1136/bmjophth-2023-001252] [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: 01/24/2023] [Accepted: 06/08/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND A five generation family has been analysed by whole exome sequencing (WES) for genetic associations with the multimorbidities of congenital cataract (CC), retinitis pigmentosa (RP) and Crohn's disease (CD). METHODS WES was performed for unaffected and affected individuals within the family pedigree followed by bioinformatic analyses of these data to identify disease-causing variants with damaging pathogenicity scores. RESULTS A novel pathogenic missense variant in WFS1: c.1897G>C; p.V633L, a novel pathogenic nonsense variant in RP1: c.6344T>G; p.L2115* and a predicted pathogenic missense variant in NOD2: c.2104C>T; p.R702W are reported. The three variants cosegregated with the phenotypic combinations of autosomal dominant CC, RP and CD within individual family members. CONCLUSIONS Here, we report multimorbidity in a family pedigree listed on a CC register, which broadens the spectrum of potential cataract associated genes to include both RP1 and NOD2.
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Affiliation(s)
- Vanita Berry
- Genetics, UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, EC1V 2PD, UK, London, UK
| | - Alexander Ionides
- Moorfields Eye Hospital NHS Foundation Trust, London, EC1V 2PD, UK, London, UK
| | - Michalis Georgiou
- Genetics, UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, EC1V 2PD, UK, London, UK
| | - Roy A Quinlan
- Department of Biosciences, University of Durham, Upper Mountjoy Science Site, Durham DH1 3LE, UK, Durham, UK
| | - Michel Michaelides
- Genetics, UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, EC1V 2PD, UK, London, UK
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A clinical case of a surgical treatment of complicated cataract in a patient with Hall–Hittner syndrome. КЛИНИЧЕСКАЯ ПРАКТИКА 2022. [DOI: 10.17816/clinpract106524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background: Variants of the CHD7 gene found in the OMIM 608892 genomic material are present in 8395% of patients suffering from the CHARGE syndrome. The aim of this report is to evaluate the clinical and functional results of cataract phacoemulsification with implantation of a toric intraocular lens in a patient with a very rare pathology HallHittner syndrome. Clinical case description: Under observation was patient V., who successfully underwent cataract phacoemulsification on the right eye with implantation of an intraocular lens for complicated cataract against the background of combined congenital eye pathology confirmed by the diagnostic data before and after the surgery. The optimal visual functions were reached after the successful surgical treatment. The patient was subjectively satisfied with the restored visual functions in the right eye. Conclusion: The clinical case demonstrates a successful implementation of cataract phacoemulsification with implantation of a toric intraocular lens in a patient diagnosed with complicated cataract against the background of combined congenital eye pathology, which suggests the possibility of a surgical treatment for such patients.
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Cai SP, Lu L, Wang XZ, Wang Y, He F, Fan N, Weng JN, Zhang JH, Liu XY. A mutated CRYGD associated with congenital coralliform cataracts in two Chinese pedigrees. Int J Ophthalmol 2021; 14:800-804. [PMID: 34150533 DOI: 10.18240/ijo.2021.06.03] [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: 07/18/2020] [Accepted: 02/07/2021] [Indexed: 11/23/2022] Open
Abstract
AIM To investigate the causal gene mutation and clinical characteristics for two Chinese families with autosomal dominant congenital coralliform cataract. METHODS Two Chinese pedigrees with congenital cataract were investigated. Routine ophthalmic examinations were performed on all patients and non-affected family members. Peripheral blood samples were collected, and the genomic DNAs were extracted. The coding regions of proband's DNAs were analyzed with cataract gene panel. The identified mutation was amplified by polymerase chain reaction, and automated sequencing was performed in other members of two families to verify whether the mutated gene was co-segregated with the disease. RESULTS Congenital coralliform cataract was inherited in an autosomal dominant mode in both pedigrees. For each family, more than half of the family members were affected. All patients presented with severe visual impairment after birth as a result of bilateral symmetric coralliform lens opacification. An exact the same defect in the same gene, a heterozygous mutation of c.70C>A (p. P24T) in exon 2 of γD-crystallin gene, was detected in both probands from each family. Sanger sequencing analysis demonstrated that the mutated CRYGD was co-segregated in these two families. CONCLUSION A c.70C>A (p. P24T) variant in CRYGD gene was reconfirmed to be the causal gene in two Chinese pedigrees. It is known that mutated CRYGD caused most of the congenital coralliform cataracts, suggesting that the CRYGD gene is associated with coralliform congenital cataract.
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Affiliation(s)
- Su-Ping Cai
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Lan Lu
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fujian Medical University College of Medical Technology and Engineering, Fuzhou 350001, Fujian Province, China
| | - Xi-Zhen Wang
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Yun Wang
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Fen He
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Ning Fan
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Jing-Ning Weng
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fujian Medical University College of Medical Technology and Engineering, Fuzhou 350001, Fujian Province, China
| | - Jun-Hua Zhang
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fujian Medical University College of Medical Technology and Engineering, Fuzhou 350001, Fujian Province, China
| | - Xu-Yang Liu
- Xiamen Eye Center, Xiamen University, Xiamen 361100, Fujian Province, China.,Department of Ophthalmology, Shenzhen People's Hospital, the 2nd Clinical Medical College, Jinan University, Shenzhen 518020, Guangdong Province, China
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