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Singh P, Saha U, Paira S, Das B. Nuclear mRNA Surveillance Mechanisms: Function and Links to Human Disease. J Mol Biol 2018; 430:1993-2013. [PMID: 29758258 DOI: 10.1016/j.jmb.2018.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/30/2018] [Accepted: 05/07/2018] [Indexed: 01/05/2023]
Abstract
Production of export-competent mRNAs involves transcription and a series of dynamic processing and modification events of pre-messenger RNAs in the nucleus. Mutations in the genes encoding the transcription and mRNP processing machinery and the complexities involved in the biogenesis events lead to the formation of aberrant messages. These faulty transcripts are promptly eliminated by the nuclear RNA exosome and its cofactors to safeguard the cells and organisms from genetic catastrophe. Mutations in the components of the core nuclear exosome and its cofactors lead to the tissue-specific dysfunction of exosomal activities, which are linked to diverse human diseases and disorders. In this article, we examine the structure and function of both the yeast and human RNA exosome complex and its cofactors, discuss the nature of the various altered amino acid residues implicated in these diseases with the speculative mechanisms of the mutation-induced disorders and project the frontier and prospective avenues of the future research in this field.
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Affiliation(s)
- Pragyan Singh
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
| | - Upasana Saha
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
| | - Sunirmal Paira
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India
| | - Biswadip Das
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata, India.
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Abstract
This study is to investigate whether the known mutations P.R1205H and P.A502V were pathogenic factors of Parkinson disease (PD) in Xinjiang Uygur and Han people.A case-control study with polymerase chain reaction-restriction fragment length polymorphism method was performed on 150 cases of PD and 130 cases of age, sex, and national-matched healthy controls for rs200221361 polymorphism analysis and Sanger sequencing. Specific mutations were chosen for further sequencing in a case-control study.The 3 variants located on the exon 10, and the rs200221361 was a nonsynonymous variant. The frequencies of rs200221361 genotype and allele between PD and control groups in Uygur and Han people showed no significant difference (for genotype, χ = 0.91, P > .05; for allele, χ = 0.91, P > .05). Statistical analysis showed that there were no differences in allele and genotype frequencies of rs200221361 genotype and allele between PD and control groups among the age, gender, or race (P > .05).P.Ala502Val and P.Arg1205H may not be pathogenic mutations to PD in Xinjiang Uygur and Han people. The polymorphism of the rs200221361 may have no association with the occurrence of PD in Uygur and Han people of Xinjiang.
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Deng S, Xu H, Yuan J, Xiao J, Yuan L, Deng X, Guan L, Zhu A, Rong P, Zhang J, Deng H. Identification of a novel collagen type IV alpha-4 ( COL4A4) mutation in a Chinese family with autosomal dominant Alport syndrome using exome sequencing. Indian J Med Res 2017; 144:200-205. [PMID: 27934798 PMCID: PMC5206870 DOI: 10.4103/0971-5916.195026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND & OBJECTIVES Alport syndrome (AS) is an inherited disorder characterized by glomerulonephritis and end-stage renal disease (ESRD). The aim of this study was to identify the gene responsible for the glomerulopathy in a Chinese family with autosomal dominant AS using exome sequencing. METHODS A 4-generation, 30-member Chinese Han family was enrolled in this study. Exome sequencing was conducted in the proband of the family, and then direct sequencing was performed in family members of the pedigree and 100 normal controls. RESULTS A novel frameshift mutation, c.3213delA (p.Gly1072GlufsFNx0169), in the collagen type IV alpha-4 gene (COL4A4) was found to be the genetic cause. Neither sensorineural hearing loss nor ocular abnormalities were present in the patients of this family. Other clinical features, such as age of onset, age of ESRD occurring and disease severity, varied among the patients of this family. INTERPRETATION & CONCLUSIONS A novel frameshift mutation, c.3213delA (p.Gly1072GlufsFNx0169) in the COL4A4 gene, was identified in the Chinese pedigree with autosomal dominant AS. Our findings may provide new insights into the cause and diagnosis of AS and also have implications for genetic counselling.
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Affiliation(s)
- Sheng Deng
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital; Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, PR China
| | - Hongbo Xu
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | - Jinzhong Yuan
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | | | - Lamei Yuan
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | - Xiong Deng
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | | | - Anding Zhu
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | - Pengfei Rong
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, PR China
| | | | - Hao Deng
- Center for Experimental Medicine & Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, PR China
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Deng H, Tan T, He Q, Lin Q, Yang Z, Zhu A, Guan L, Xiao J, Song Z, Guo Y. Identification of a missense HOXD13 mutation in a Chinese family with syndactyly type I-c using exome sequencing. Mol Med Rep 2017; 16:473-477. [PMID: 28498426 DOI: 10.3892/mmr.2017.6576] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/02/2017] [Indexed: 11/05/2022] Open
Abstract
Syndactyly is one of the most common hereditary limb malformations, and is characterized by the fusion of specific fingers and/or toes. Syndactyly type I‑c is associated with bilateral cutaneous or bony webbing of the third and fourth fingers and occasionally of the third to fifth fingers, with normal feet. The aim of the present study was to identify the genetic basis of syndactyly type I‑c in four generations of a Chinese Han family by exome sequencing. Exome sequencing was conducted in the proband of the family, followed by direct sequencing of other family members of the same ancestry, as well as 100 ethnically‑matched, unrelated normal controls. A missense mutation, c.917G>A (p.R306Q), was identified in the homeobox D13 gene (HOXD13). Sanger sequencing verified the presence of this mutation in all of the affected family members. By contrast, this mutation was absent in the unaffected family members and the 100 ethnically‑matched normal controls. The results suggest that the c.917G>A (p.R306Q) mutation in the HOXD13 gene, may be responsible for syndactyly type I‑c in this family. Exome sequencing may therefore be a powerful tool for identifying mutations associated with syndactyly, which is a disorder with high genetic and clinical heterogeneity. The results provide novel insights into the etiology and diagnosis of syndactyly, and may influence genetic counseling and the clinical management of the disease.
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Affiliation(s)
- Hao Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Ting Tan
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Quanyong He
- Department of Burn and Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Qiongfen Lin
- BGI‑Shenzhen, Shenzhen, Guangdong 518083, P.R. China
| | - Zhijian Yang
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Anding Zhu
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Liping Guan
- BGI‑Shenzhen, Shenzhen, Guangdong 518083, P.R. China
| | - Jingjing Xiao
- BGI‑Shenzhen, Shenzhen, Guangdong 518083, P.R. China
| | - Zhi Song
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yi Guo
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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Hu P, Wu S, Yuan L, Lin Q, Zheng W, Xia H, Xu H, Guan L, Deng H. Compound heterozygous POMT1 mutations in a Chinese family with autosomal recessive muscular dystrophy-dystroglycanopathy C1. J Cell Mol Med 2017; 21:1388-1393. [PMID: 28157257 PMCID: PMC5487925 DOI: 10.1111/jcmm.13068] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 11/24/2016] [Indexed: 11/29/2022] Open
Abstract
Muscular dystrophy-dystroglycanopathy (MDDG) is a genetically and clinically heterogeneous group of muscular disorders, characterized by congenital muscular dystrophy or later-onset limb-girdle muscular dystrophy accompanied by brain and ocular abnormalities, resulting from aberrant alpha-dystroglycan glycosylation. Exome sequencing and Sanger sequencing were performed on a six-generation consanguineous Han Chinese family, members of which had autosomal recessive MDDG. Compound heterozygous mutations, c.1338+1G>A (p.H415Kfs*3) and c.1457G>C (p.W486S, rs746849558), in the protein O-mannosyltransferase 1 gene (POMT1), were identified as the genetic cause. Patients that exhibited milder MDDG manifested as later-onset progressive proximal pelvic, shoulder girdle and limb muscle weakness, joint contractures, mental retardation and elevated creatine kinase, without structural brain or ocular abnormalities, were further genetically diagnosed as MDDGC1. The POMT1 gene splice-site mutation (c.1338+1G>A) which leads to exon 13 skipping and results in a truncated protein may contribute to a severe phenotype, while the allelic missense mutation (p.W486S) may reduce MDDG severity. These findings may expand phenotype and mutation spectrum of the POMT1 gene. Clinical diagnosis supplemented with molecular screening may result in more accurate diagnoses of, prognoses for, and improved genetic counselling for this disease.
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Affiliation(s)
- Pengzhi Hu
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Song Wu
- Department of Orthopedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lamei Yuan
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | | | - Wen Zheng
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hong Xia
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hongbo Xu
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | | | - Hao Deng
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
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Yuan L, Song Z, Deng X, Zheng W, Guo Y, Yang Z, Deng H. Systematic analysis of genetic variants in Han Chinese patients with sporadic Parkinson's disease. Sci Rep 2016; 6:33850. [PMID: 27653456 PMCID: PMC5032117 DOI: 10.1038/srep33850] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 09/05/2016] [Indexed: 01/21/2023] Open
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative disorders. Accumulated evidence confirms that genetic factors play a considerable role in PD pathogenesis. To examine whether point variants or haplotypes are associated with PD development, genotyping of 35 variants in 22 PD-related genes was performed in a well-characterized cohort of 512 Han Chinese PD patients and 512 normal controls. Both Pearson's χ2 test and haplotype analysis were used to evaluate whether variants or their haplotypes were associated with PD in this cohort. The only statistically significant differences in genotypic and allelic frequencies between the patients and the controls were in the DnaJ heat shock protein family (Hsp40) member C10 gene (DNAJC10) variant rs13414223 (P = 0.004 and 0.002, respectively; odds ratio = 0.652, 95% confidence interval: 0.496-0.857). No other variants or haplotypes exhibited any significant differences between these two groups (all corrected P > 0.05). Our findings indicate that the variant rs13414223 in the DNAJC10 gene, a paralog of PD-related genes DNAJC6 and DNAJC13, may play a protective role in PD. This suggests it may be a PD-associated gene.
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Affiliation(s)
- Lamei Yuan
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhi Song
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Wen Zheng
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Yi Guo
- Department of Medical Information, Information Security and Big Data Research Institute, Central South University, Changsha, China
| | - Zhijian Yang
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
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Weng YC, Chen CM, Chen YC, Fung HC, Chang CW, Chang KH, Wu YR. Eukaryotic translation initiation factor 4-γ, 1 gene mutations are rare in Parkinson's disease among Taiwanese. J Formos Med Assoc 2016; 115:728-33. [DOI: 10.1016/j.jfma.2015.07.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 07/05/2015] [Accepted: 07/06/2015] [Indexed: 01/04/2023] Open
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8
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Lu Q, Song Z, Deng X, Xiong W, Xu H, Zhang Z, Lu H, Deng H. SLC6A3 rs28363170 and rs3836790 variants in Han Chinese patients with sporadic Parkinson’s disease. Neurosci Lett 2016; 629:48-51. [DOI: 10.1016/j.neulet.2016.06.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/23/2016] [Accepted: 06/24/2016] [Indexed: 12/18/2022]
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A homozygous parkin p.G284R mutation in a Chinese family with autosomal recessive juvenile parkinsonism. Neurosci Lett 2016; 624:100-4. [DOI: 10.1016/j.neulet.2016.05.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/04/2016] [Accepted: 05/08/2016] [Indexed: 11/17/2022]
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Xu DL, Tian HL, Cai WL, Zheng J, Gao M, Zhang MX, Zheng ZT, Lu QH. Novel 6-bp deletion in MEF2A linked to premature coronary artery disease in a large Chinese family. Mol Med Rep 2016; 14:649-54. [PMID: 27221044 PMCID: PMC4918543 DOI: 10.3892/mmr.2016.5297] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 04/14/2016] [Indexed: 12/28/2022] Open
Abstract
The aim of the present study was to identify the genetic defect responsible for familial coronary artery disease/myocardial infarction (CAD/MI), which exhibited an autosomal dominant pattern of inheritance, in an extended Chinese Han pedigree containing 34 members. Using exome and Sanger sequencing, a novel 6-base pair (bp) 'CAGCCG' deletion in exon 11 of the myocyte enhancer factor 2A (MEF2A) gene was identified, which cosegregated with CAD/MI cases in this family. This 6-bp deletion was not detected in 311 sporadic cases of premature CAD/MI or in 323 unrelated healthy controls. Determination of a genetic risk profile has a key role in understanding the pathogenesis of CAD and MI. Among the reported risk conferring genes and their variants, mutations in MEF2A have been reported to segregate with CAD/MI in Caucasian families. Causative missense mutations have also been detected in sporadic CAD/MI cases. However, this suggested genetic linkage is controversial, since it could not be confirmed by ensuing studies. The discovery of a novel MEF2A mutation in a Chinese family with premature CAD/MI suggests that MEF2A may have a significant role in the pathogenesis of premature CAD/MI. To better understand this association, further in vitro and in vivo studies are required.
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Affiliation(s)
- Dong-Ling Xu
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Hong-Liang Tian
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Wei-Li Cai
- Department of Cardiology, The Third Hospital of Jinan, Jinan, Shandong 250021, P.R. China
| | - Jie Zheng
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Min Gao
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Ming-Xiang Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Zhao-Tong Zheng
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Qing-Hua Lu
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Yuan L, Xu H, Yuan J, Deng X, Xiong W, Yang Z, Huang Y, Deng H. A novel FN1 variant associated with familial hematuria: TBMN? Clin Biochem 2016; 49:816-20. [PMID: 26968105 DOI: 10.1016/j.clinbiochem.2016.01.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 12/17/2015] [Accepted: 01/05/2016] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Thin basement membrane nephropathy (TBMN), an autosomal dominant inherited condition in general, is characterized clinically by persistent hematuria and pathologically by thinning of glomerular basement membrane. TBMN is occasionally accompanied with proteinuria, hypertension and renal impairment in some cases. The aim of this study is to explore the genetic defect in a Chinese pedigree with familial hematuria. DESIGN AND METHODS A four-generation Chinese Han pedigree with familial hematuria was recruited. Exome sequencing was conducted in the proband diagnosed as TBMN, followed by verification in the proband and other family members with Sanger sequencing. RESULTS A novel missense variant, c.4616C>G (p.S1539C), in the fibronectin 1 gene (FN1), was identified, and it co-segregated with the disease condition in the family. It was not observed in 100 normal controls. CONCLUSIONS A missense variant in the FN1 gene is possibly responsible for familial hematuria or TBMN in this family, which may broaden the phenotype and mutation spectrums of the FN1 gene. A male patient in this family progressed to end-stage renal disease requiring kidney transplantation, supporting that familial hematuria or TBMN may not always be as benign as generally thought. The findings may have new implications for clinical monitoring and genetic counseling of the family, and may also help understand the pathogenesis.
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Affiliation(s)
- Lamei Yuan
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hongbo Xu
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jinzhong Yuan
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Deng
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wei Xiong
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhijian Yang
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yuzhou Huang
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Deng
- Center for Experimental Medicine and Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China.
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12
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Yuan L, Song Z, Deng X, Xiong W, Yang Z, Deng H. Association of the MTHFR rs1801131 and rs1801133 variants in sporadic Parkinson's disease patients. Neurosci Lett 2016; 616:26-31. [PMID: 26806866 DOI: 10.1016/j.neulet.2016.01.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 01/15/2016] [Accepted: 01/18/2016] [Indexed: 01/28/2023]
Abstract
Parkinson's disease (PD) is a common age-dependent neurodegenerative movement disorder related to multiple factors, and genetic factors play an important role in the pathogenesis of PD. Variants in the methylenetetrahydrofolate reductase gene (MTHFR), a gene encoding a folate-dependent enzyme that is involved in homocysteine metabolism, have been reported to be associated with PD. To explore the role of the MTHFR gene in the development of PD in Chinese Han population, we analyzed two MTHFR variants (rs1801131 and rs1801133) in a patient cohort consisting of 512 patients with PD from mainland China and a control cohort consisting of 512 age, gender and ethnicity matched normal subjects. Statistically significant differences in genotypic and allelic frequencies were detected in the MTHFR variant rs1801133 (P=0.022 and 0.007, respectively; odds ratio=0.780, 95% confidence interval=0.651-0.934). In addition, the A-T haplotype of rs1801131-rs1801133 showed a protective role against PD development (P=0.007, odds ratio=0.779, 95% confidence interval=0.650-0.933). Our results suggested that the T allele of rs1801133 variant and A-T haplotype of rs1801131-rs1801133 in the MTHFR gene may decrease the risk of developing PD in Chinese Han population from mainland China.
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Affiliation(s)
- Lamei Yuan
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China; Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhi Song
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Wei Xiong
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhijian Yang
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China; Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China.
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13
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He S, Tan T, Song Z, Yuan L, Deng X, Ni B, Chen Y, Deng H. Genetic analysis of MC1R variants in Chinese Han patients with sporadic Parkinson’s disease. Neurosci Lett 2016; 611:101-5. [DOI: 10.1016/j.neulet.2015.11.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 11/19/2015] [Accepted: 11/22/2015] [Indexed: 10/22/2022]
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14
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Tan T, Song Z, Yuan L, Xiong W, Deng X, Ni B, Chen Y, Deng H. Genetic analysis of TREM2 variants in Chinese Han patients with sporadic Parkinson's disease. Neurosci Lett 2015; 612:189-192. [PMID: 26704436 DOI: 10.1016/j.neulet.2015.12.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 12/11/2015] [Accepted: 12/12/2015] [Indexed: 11/19/2022]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder after Alzheimer's disease and is characterized by the degeneration of dopaminergic neurons in substantia nigra. Recently, rs75932628 (p.R47H) of the triggering receptor expressed on myeloid cells 2 gene (TREM2) was identified to be associated with PD in American, Spanish, Irish, and Polish population. To explore whether TREM2 variants are related to susceptibility of sporadic PD in Chinese Han population, we designed a case-control comparison study and studied two variants rs75932628 (p.R47H) and rs2234253 (p.T96K) of the TREM2 gene in 512 Chinese Han patients with sporadic PD and 512 age, gender and ethnicity matched normal controls from Mainland China. No variant for either rs75932628 or rs2234253 was found in both PD and control cohorts. Our data suggest that neither variant rs75932628 nor rs2234253 be a major susceptibility factor of sporadic PD in Chinese Han population from Mainland China.
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Affiliation(s)
- Ting Tan
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China; Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhi Song
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lamei Yuan
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wei Xiong
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiong Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Bin Ni
- Key Laboratory of Genetics and Birth Health of Hunan Province, Family Planning Institute of Hunan Province, Changsha, China
| | - Yong Chen
- Key Laboratory of Genetics and Birth Health of Hunan Province, Family Planning Institute of Hunan Province, Changsha, China.
| | - Hao Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China; Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China.
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15
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Kalinderi K, Bostantjopoulou S, Katsarou Z, Dimikiotou M, Fidani L. D620N mutation in the VPS35 gene and R1205H mutation in the EIF4G1 gene are uncommon in the Greek population. Neurosci Lett 2015; 606:113-6. [DOI: 10.1016/j.neulet.2015.08.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 07/24/2015] [Accepted: 08/12/2015] [Indexed: 01/12/2023]
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16
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Identification of a Novel Mutation in the Titin Gene in a Chinese Family with Limb-Girdle Muscular Dystrophy 2J. Mol Neurobiol 2015; 53:5097-102. [DOI: 10.1007/s12035-015-9439-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/10/2015] [Indexed: 01/01/2023]
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17
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Guo Y, Tan T, Deng X, Song Z, Yang Z, Yang Y, Deng H. TCEANC2 rs10788972 and rs12046178 variants in the PARK10 region in Chinese Han patients with sporadic Parkinson's disease. Neurobiol Aging 2015; 36:3335.e1-3335.e2. [PMID: 26432391 DOI: 10.1016/j.neurobiolaging.2015.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 08/12/2015] [Accepted: 09/01/2015] [Indexed: 12/25/2022]
Abstract
Parkinson's disease (PD) is the second most common chronic neuronal degeneration disorder with motor and nonmotor clinical features. The rs10788972 variant of the transcription elongation factor A (SII) N-terminal and central domain containing 2 (TCEANC2) gene in the PARK10 region was recently identified to be strongly related to sporadic PD in the American population. To evaluate whether the same variant is associated with sporadic PD in Chinese Han population, we researched 513 sporadic PD patients and 512 normal controls of Chinese Han ethnicity in Mainland China. No significant difference in genotypic and allelic distributions between patients and control groups for either rs10788972 (for genotypic distribution, χ(2) = 0.412, p = 0.814, and for allelic distribution, χ(2) = 0.280, p = 0.597) or its neighbor marker rs12046178 (for genotypic distribution, χ(2) = 1.500, p = 0.472, and for allelic distribution, χ(2) = 1.339, p = 0.247) was found. Our data suggest that neither variant is related to sporadic PD in Chinese Han population.
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Affiliation(s)
- Yi Guo
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Information Security and Big Data Research Institute, Central South University, Changsha, Hunan, People's Republic of China
| | - Ting Tan
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Xiong Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zhi Song
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zhijian Yang
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Yan Yang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Hao Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China; Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
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18
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Deng S, Deng X, Yuan L, Song Z, Yang Z, Xiong W, Deng H. Genetic analysis of SNCA coding mutation in Chinese Han patients with Parkinson disease. Acta Neurol Belg 2015; 115:267-71. [PMID: 25092551 DOI: 10.1007/s13760-014-0347-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Accepted: 07/22/2014] [Indexed: 12/01/2022]
Abstract
Parkinson disease (PD) is the second most common progressive neurodegenerative disorder. It is characterized by selective loss of dopamine-producing neurons and aggregation of alpha-synuclein (SNCA) in neurons of particular brain regions. At least 20 loci and 15 disease-causing genes have been identified. Rare missense or multiplication mutations in the SNCA gene have been reported to be involved in some familial and sporadic cases of PD. More recently, two novel pathogenic missense mutations (p.H50Q and p.G51D) were identified in the SNCA gene. To evaluate whether mutation(s) in the coding region of SNCA gene is related to PD in Chinese population, we investigated the SNCA gene in 502 PD patients of Chinese Han ethnicity from Mainland China. No pathogenic mutation was identified in the coding region of the gene. A known G to A transition (c.306 + 66G>A, rs10005233) in the intron 4, which does not potentially change splicing, was identified. Our data indicate that mutations in the coding region of the SNCA gene are not likely to be a common cause of PD in Chinese population.
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Affiliation(s)
- Sheng Deng
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
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19
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Deng H, Wu Y, Jankovic J. The EIF4G1 gene and Parkinson's disease. Acta Neurol Scand 2015; 132:73-8. [PMID: 25765080 DOI: 10.1111/ane.12397] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2015] [Indexed: 01/04/2023]
Abstract
Variants in the EIF4G1 gene have been recently identified to be responsible for autosomal dominant PD (PARK18), but its role in the PD-related neurodegeneration is unclear. Several EIF4G1 mutation/variants were found to be associated with PD, and functional studies have suggested that these variants may impair the ability of cells to rapidly and dynamically respond to stress, thus probably participating in the development of PD, and these indicated that EIF4G1 variants may play an important role in pathogenicity of PD, although the frequency is low. Further studies involving large sample size of patients with PD from diverse populations, as well as studies of EIF4G1 expression and in scaffold function, are warranted.
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Affiliation(s)
- H. Deng
- Center for Experimental Medicine and Department of Neurology; the Third Xiangya Hospital; Central South University; Changsha China
| | - Y. Wu
- Center for Experimental Medicine and Department of Neurology; the Third Xiangya Hospital; Central South University; Changsha China
- Department of Clinical Laboratory; the Third Xiangya Hospital; Central South University; Changsha China
| | - J. Jankovic
- Parkinson's Disease Center and Movement Disorders Clinic; Department of Neurology; Baylor College of Medicine; Houston TX USA
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20
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Yuan L, Guo Y, Yi J, Xiao J, Yuan J, Xiong W, Xu H, Yang Z, Zhang J, Deng H. Identification of a novel GJA3 mutation in congenital nuclear cataract. Optom Vis Sci 2015; 92:337-42. [PMID: 25635993 DOI: 10.1097/opx.0000000000000518] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Congenital cataract is a visual impairment that needs correction as early as possible after birth. This study aimed to identify whether genetic defects exist in a Chinese Han pedigree with congenital nuclear cataract. METHODS A family consisting of six members and three patients with nuclear cataract spanning three generations and 100 unrelated ethnically matched normal subjects were recruited in this study. Exome sequencing was performed in the 24-year-old proband, and Sanger sequencing was then conducted in other family members and 100 normal controls. RESULTS A novel missense variant, c.428G>A (p.G143E), in the gap junction protein-alpha 3 gene (GJA3) was identified in three patients of the family but unidentified in three family members without lens opacity and 100 normal controls. CONCLUSIONS A novel missense mutation, c.428G>A (p.G143E), in the GJA3 gene, localized to the cytoplasmic loop, was suggested to be the genetic cause of congenital nuclear cataract, which further expands the gene mutation spectrum. Our findings suggest that exome sequencing is a powerful and cost-effective tool to discover mutation(s) in disorders with high genetic and clinical heterogeneity. Further functional studies in the GJA3 gene mutations may help uncover pathogenic mechanisms of congenital cataract and therefore provide a possible genetic therapy for this disorder.
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Affiliation(s)
- Lamei Yuan
- *MD †PhD ‡MS §RA Center for Experimental Medicine and Department of Neurology (LY, YG, HX, ZY, HD), Department of Ophthalmology (J Yi), Department of Nephrology (J Yuan), the Third Xiangya Hospital, Central South University, Changsha, China; Department of Medical Information (YG), Cancer Research Institute (WX), Xiangya School of Medicine, Central South University, Changsha, China; and BGI-Shenzhen, Shenzhen, China (JX, JZ)
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21
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Identification of a Premature Termination Mutation in the Proline-Rich Transmembrane Protein 2 Gene in a Chinese Family with Febrile Seizures. Mol Neurobiol 2014; 53:835-841. [DOI: 10.1007/s12035-014-9047-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 12/02/2014] [Indexed: 10/24/2022]
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22
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Huttenlocher J, Krüger R, Capetian P, Lohmann K, Brockmann K, Csoti I, Klein C, Berg D, Gasser T, Bonin M, Riess O, Bauer P. EIF4G1is neither a strong nor a common risk factor for Parkinson's disease: evidence from large European cohorts: Table1. J Med Genet 2014; 52:37-41. [DOI: 10.1136/jmedgenet-2014-102570] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Deng H, Yuan L. Genetic variants and animal models in SNCA and Parkinson disease. Ageing Res Rev 2014; 15:161-76. [PMID: 24768741 DOI: 10.1016/j.arr.2014.04.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/08/2014] [Accepted: 04/14/2014] [Indexed: 12/20/2022]
Abstract
Parkinson disease (PD; MIM 168600) is the second most common progressive neurodegenerative disorder characterized by a variety of motor and non-motor features. To date, at least 20 loci and 15 disease-causing genes for parkinsonism have been identified. Among them, the α-synuclein (SNCA) gene was associated with PARK1/PARK4. Point mutations, duplications and triplications in the SNCA gene cause a rare dominant form of PD in familial and sporadic PD cases. The α-synuclein protein, a member of the synuclein family, is abundantly expressed in the brain. The protein is the major component of Lewy bodies and Lewy neurites in dopaminergic neurons in PD. Further understanding of its role in the pathogenesis of PD through various genetic techniques and animal models will likely provide new insights into our understanding, therapy and prevention of PD.
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Affiliation(s)
- Hao Deng
- Center for Experimental Medicine and Department of Neurology, the Third Xiangya Hospital, Central South University, Tongzipo Road 138, Changsha, Hunan 410013, PR China.
| | - Lamei Yuan
- Center for Experimental Medicine and Department of Neurology, the Third Xiangya Hospital, Central South University, Tongzipo Road 138, Changsha, Hunan 410013, PR China
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24
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Nishioka K, Funayama M, Vilariño-Güell C, Ogaki K, Li Y, Sasaki R, Kokubo Y, Kuzuhara S, Kachergus JM, Cobb SA, Takahashi H, Mizuno Y, Farrer MJ, Ross OA, Hattori N. EIF4G1 gene mutations are not a common cause of Parkinson's disease in the Japanese population. Parkinsonism Relat Disord 2014; 20:659-61. [PMID: 24704100 DOI: 10.1016/j.parkreldis.2014.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/25/2014] [Accepted: 03/01/2014] [Indexed: 01/04/2023]
Abstract
Pathogenic mutations in the EIF4G1 gene were recently reported as a cause of autosomal dominant parkinsonism. To assess the frequency of EIF4G1 mutations in the Japanese population we sequenced the entire gene coding region (31 exons) in 95 patients with an apparent autosomal dominant inherited form of Parkinson's disease. We detected three novel point mutations located in a poly-glutamic acid repeat within exon 10. These variants were screened through 224 Parkinson's disease cases and 374 normal controls from the Japanese population. We detected the poly-glutamic acid deletion in exon 10 in two additional patients with sporadic Parkinson's disease. Although the EIF4G1 variants identified in the present study were not observed in control subjects, co-segregation analyses and population-based screening data suggest they are not pathogenic. In conclusion, we did not identify novel or previously reported pathogenic mutations (including the p.A502V and p.R1205H mutants) within EIF4G1 in the Japanese population, thus future studies are warranted to elucidate the role of this gene in Parkinson's disease.
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Affiliation(s)
- Kenya Nishioka
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA; Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Manabu Funayama
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | | | - Kotaro Ogaki
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA; Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yuanzhe Li
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Ryogen Sasaki
- Graduate School of Regional Innovation Studies, Kii ALS/PDC Research Center, Mie University, Tsu, Mie, Japan
| | - Yasumasa Kokubo
- Graduate School of Regional Innovation Studies, Kii ALS/PDC Research Center, Mie University, Tsu, Mie, Japan
| | - Shigeki Kuzuhara
- Department of Medical Welfare, Faculty of Health Science, Suzuka University of Medical Science, Suzuka, Mie, Japan
| | | | | | - Hirohide Takahashi
- Department of Neurology, Tokai University School of Medicine, Kanagawa, Japan
| | - Yoshikuni Mizuno
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Matthew J Farrer
- Department of Medical Genetics, University of British Columbia, Vancouver, Canada
| | - Owen A Ross
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA.
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
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25
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Howard A, Rogers AN. Role of translation initiation factor 4G in lifespan regulation and age-related health. Ageing Res Rev 2014; 13:115-24. [PMID: 24394551 DOI: 10.1016/j.arr.2013.12.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/18/2013] [Accepted: 12/23/2013] [Indexed: 01/04/2023]
Abstract
Inhibiting expression of eukaryotic translation initiation factor 4G (eIF4G) arrests normal development but extends lifespan when suppressed during adulthood. In addition to reducing overall translation, inhibition alters the stoichiometry of mRNA translation in favor of genes important for responding to stress and against those associated with growth and reproduction in C. elegans. In humans, aberrant expression of eIF4G is associated with certain forms of cancer and neurodegeneration. Here we review what is known about the roles of eIF4G in molecular, cellular, and organismal contexts. Also discussed are the gaps in understanding of this factor, particularly with regard to the roles of specific forms of expression in individual tissues and the importance of understanding eIF4G for development of potential therapeutic applications.
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26
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Guo Y, Yang H, Deng X, Song Z, Yang Z, Xiong W, Yuan L, Xu H, Deng S, Deng H. Genetic analysis of the S100B gene in Chinese patients with Parkinson disease. Neurosci Lett 2013; 555:134-6. [PMID: 24076007 DOI: 10.1016/j.neulet.2013.09.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 09/11/2013] [Accepted: 09/14/2013] [Indexed: 01/11/2023]
Abstract
There is growing evidence that genetic abnormalities play an important role in the pathogenesis of Parkinson disease (PD). At least 18 genetic loci and 13 disease-related genes for parkinsonism have been identified. The S100 calcium-binding beta (S100B), which is expressed and secreted by astrocytes, has been found to be associated with PD. To evaluate whether the S100B variants are related to PD in Chinese Han population, we conducted genetic examination of the S100B gene in 502 PD patients from Mainland China. We did identify two known variants c.279+4T>C (rs187503470) and c.99C>G (p.Leu33Leu, rs1051169) in our patients. Neither of these two variants is predicted to change amino acid or splice site, indicating that they are not pathogenic mutations. Our results suggest that mutations in the coding region or intron/exon boundaries of the S100B gene play little or no role in the development of PD in Chinese population.
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Affiliation(s)
- Yi Guo
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China; Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
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