Abstract:
BACKGROUND:The mitochondrial voltage-dependent anion channel (VDAC) is increasingly implicated in the control of apoptosis. We have studied the effects the mitochondrial DNA (mtDNA) tRNAIle mutation on VDAC expression, localization, and apoptosis. METHODS:Lymphoblastoid cell lines were derived from 3 symptomatic and 1 asymptomatic members of a family with hypertension associated with the A4263G tRNAIle mutation as well as from control subjects. Mitochondrial potential (DeltaPsim) and apoptosis were measured by flow cytometry; co-localization of VDAC and Bax was evaluated by confocal microscopy. RESULTS:Expression of VDAC and Bax in mtDNA cell lines was found to be increased compared to controls, while expression of the small conductance calcium-dependant potassium channel (sKCa) was unchanged. Confocal imaging revealed co-localization of VDAC/Bax on the outer mitochondrial membrane of A4263G cell lines but not from controls. Flow cytometry indicated that the mitochondrial potential was decreased by 32% in mutated cells versus controls while rates of apoptosis were increased (P < 0.05). The difference was attenuated by Cyclosporin A (CsA, 2 muM), a blocker of VDAC. CONCLUSION:We conclude that increased expression of mitochondrial VDAC and subcellular co-localization of VDAC/Bax increases mitochondrial permeability and apoptosis in cell lines carrying the mtDNA tRNAIle A4263G mutation.
journal_name
BMC Med Genetjournal_title
BMC medical geneticsauthors
Yuqi L,Lei G,Yang L,Zongbin L,Hua X,Lin W,Rui C,Mohan L,Yi W,Minxin G,Shiwen Wdoi
10.1186/1471-2350-10-114subject
Has Abstractpub_date
2009-11-09 00:00:00pages
114issn
1471-2350pii
1471-2350-10-114journal_volume
10pub_type
杂志文章abstract:BACKGROUND:Recent genome-wide association (GWA) studies have identified several unsuspected genes associated with type 2 diabetes (T2D) with previously unknown functions. In this investigation, we have examined the role of 9 most significant SNPs reported in GWA studies: [peroxisome proliferator-activated receptor gamm...
journal_title:BMC medical genetics
pub_type: 杂志文章
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更新日期:2008-07-03 00:00:00
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pub_type: 杂志文章
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journal_title:BMC medical genetics
pub_type: 杂志文章
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更新日期:2017-12-15 00:00:00
abstract:BACKGROUND:Analyses of Expressed Sequence Tags (ESTs) databases suggest that most human genes have multiple alternative splice variants. The alternative splicing of pre-mRNA is tightly regulated during development and in different tissue types. Changes in splicing patterns have been described in disease states. Recentl...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-10-149
更新日期:2009-12-31 00:00:00
abstract:BACKGROUND:DJ-1 forms part of the neuronal cellular defence mechanism against oxidative insults, due to its ability to undergo self-oxidation. Oxidative stress has been implicated in the pathogenesis of central nervous system damage in different neurodegenerative disorders including Alzheimer's disease and Parkinson's ...
journal_title:BMC medical genetics
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2020-02-17 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-11-39
更新日期:2010-03-03 00:00:00
abstract:BACKGROUND:Mutations in GATA6 are the most frequent cause of pancreatic agenesis. Most cases present with neonatal diabetes mellitus. CASE PRESENTATION:The case was a female born after an uncomplicated pregnancy and delivery in a non-consanguineous family (3.59 kg, 70th percentile). Severe cardiac malformations were d...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-020-01012-2
更新日期:2020-04-03 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2019-05-24 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-017-0380-0
更新日期:2017-02-23 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-017-0511-7
更新日期:2017-12-19 00:00:00
abstract:BACKGROUND:Neurofibromatosis type-1 (NF1) is caused by mutations of the NF1 gene at 17q11.2. In 95% of non-founder NF1 patients, NF1 mutations are identifiable by means of a comprehensive mutation analysis. 5-10% of these patients harbour microdeletions encompassing the NF1 gene and its flanking regions. NF1 is charact...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-13-98
更新日期:2012-10-26 00:00:00
abstract:BACKGROUND:Southern China provinces have high incidence of thalassemia, however, sporadic cases can be found in northern China as well. METHODS:People resided in north China who were suspected to have thalassemia were detected mutations by gap-polymerase chain reaction (Gap-PCR) and reverse dot blot (RDB) analyses. Th...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-019-0818-7
更新日期:2019-05-22 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-9-39
更新日期:2008-05-06 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
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更新日期:2020-11-26 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-12-150
更新日期:2011-11-21 00:00:00
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pub_type: 杂志文章
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更新日期:2013-12-29 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章,多中心研究
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更新日期:2013-12-01 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-11
更新日期:2007-03-08 00:00:00
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pub_type: 杂志文章,meta分析,评审
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更新日期:2019-06-25 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-8-67
更新日期:2007-11-09 00:00:00
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更新日期:2014-09-09 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-10-77
更新日期:2009-08-14 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-14-118
更新日期:2013-11-11 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/s12881-018-0622-9
更新日期:2018-07-05 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
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更新日期:2008-07-07 00:00:00
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journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-12-20
更新日期:2011-02-04 00:00:00
abstract:BACKGROUND:The present study is an analysis of the frequencies of HLA-A and -B antigens and HLA haplotypes in two groups of individuals homozygous for the two main HFE mutations (C282Y and H63D) and a group heterozygous for the S65C mutation. METHODS:The study population includes: 1123 healthy individuals, 100 homozyg...
journal_title:BMC medical genetics
pub_type: 杂志文章
doi:10.1186/1471-2350-5-25
更新日期:2004-10-21 00:00:00