Role of mtDNA3010 A/G genotype variation in pathogenesis of high-altitude pulmonary edema
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Role of mtDNA3010 A/G genotype variation in pathogenesis of high-altitude pulmonary edema
Journal of Third Military Medical UniversityVol. 41, Issue 8, Pages: 734-740(2019)
作者机构:
400038 重庆,陆军军医大学(第三军医大学)陆军卫勤训练基地军事医学地理学教研室,全军战救训练技术与器材研发实验室Development, Army Health Service Training Base, Army Medical University (Third Military Medical University), Chongqing, 400038, China
作者简介:
基金信息:
the General Program of National Natural Science Foundation of China(81372125);the Key Special Program of Logistic Scientific Research of PLA(BLJ18J005)
Yu CHEN, Liang GONG, Xingshu CHEN, et al. Role of mtDNA3010 A/G genotype variation in pathogenesis of high-altitude pulmonary edema[J]. Journal of Third Military Medical University, 2019, 41(8): 734-740.
DOI:
Yu CHEN, Liang GONG, Xingshu CHEN, et al. Role of mtDNA3010 A/G genotype variation in pathogenesis of high-altitude pulmonary edema[J]. Journal of Third Military Medical University, 2019, 41(8): 734-740. DOI: 10.16016/j.1000-5404.201812008.
Role of mtDNA3010 A/G genotype variation in pathogenesis of high-altitude pulmonary edema
To investigate the mechanism through which mtDNA3010 genotype variation leads to high-altitude pulmonary edema.
Methods
2
We assessed the functional impact of mtDNA3100 A/G genotype variation while maintaining C genotypes at the sites of mtDNA5178 and mtDNA10400. Two haplotype fusion cell models with genotype combinations at mtDNA3010
5178 and 10400 of A-C-C and G-C-C were established using mitochondrial DNA-depleted ρ
0
206 cells. The 2 fusion cell models were exposed to 1% O
2
for 24 h
and the production of reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) of the cells were detected with flow cytometry. The content of ATP was detected using a chemiluminescence method
and the expression levels of voltage-dependent anion channel1 (VDAC1) and Bax proteins were detected using Western blotting. Quantitative RT-PCR was employed to determine the mitochondrial copy number and the expression of ERK
JNK
TFAM
ATP5A1 and A
TP5I.
Results
2
In mt3010A and mt3010G fusion cells
the exposure to 1% O
2
for 24 h did not produce significant differences in the fluorescence intensity of ROS
MMP
ATP content
mitochondrial DNA copy number
or the relative protein expression levels of VDAC1 and Bax (all
P
>
0.05).The expression levels of ERK
JNK
TFAM
ATP5A1 and ATP5I genes were significantly higher in mtDNA3010A fusion cells than those in mtDNA3010G fusion cells after the hypoxic exposure (
P
<
0.05).
Conclusion
2
mtDNA3010A/G variation can affect energy metabolism of the mitochondria
and the disturbance in energy metabolism may contribute to the pathogenesis of high-altitude pulmonary edema.
关键词
Keywords
references
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