Screen for mitochondrial DNA copy number maintenance genes reveals essential role for ATP synthase.
Screen for mitochondrial DNA copy number maintenance genes reveals essential role for ATP synthase.
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DOI:
10.15252/msb.20145117
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发表时间:
2014-06-21
影响因子:
9.9
通讯作者:
Jacobs HT
中科院分区:
文献类型:
--
作者:
Fukuoh A;Cannino G;Gerards M;Buckley S;Kazancioglu S;Scialo F;Lihavainen E;Ribeiro A;Dufour E;Jacobs HT
The machinery of mitochondrial DNA (mtDNA) maintenance is only partially characterized and is of wide interest due to its involvement in disease. To identify novel components of this machinery, plus other cellular pathways required for mtDNA viability, we implemented a genome-wide RNAi screen in Drosophila S2 cells, assaying for loss of fluorescence of mtDNA nucleoids stained with the DNA-intercalating agent PicoGreen. In addition to previously characterized components of the mtDNA replication and transcription machineries, positives included many proteins of the cytosolic proteasome and ribosome (but not the mitoribosome), three proteins involved in vesicle transport, some other factors involved in mitochondrial biogenesis or nuclear gene expression, > 30 mainly uncharacterized proteins and most subunits of ATP synthase (but no other OXPHOS complex). ATP synthase knockdown precipitated a burst of mitochondrial ROS production, followed by copy number depletion involving increased mitochondrial turnover, not dependent on the canonical autophagy machinery. Our findings will inform future studies of the apparatus and regulation of mtDNA maintenance, and the role of mitochondrial bioenergetics and signaling in modulating mtDNA copy number.
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影响因子:
4.8
作者:
Cannino, Giuseppe;El-Khoury, Riyad;Dufour, Eric
通讯作者:
Dufour, Eric
影响因子:
4.8
作者:
Dascher, C;Balch, WE
通讯作者:
Balch, WE
DOI:
10.1073/pnas.110149597
发表时间:
2000-06-06
影响因子:
11.1
作者:
Clemens, JC;Worby, CA;Dixon, JE
通讯作者:
Dixon, JE
影响因子:
9.8
作者:
Bonnen, Penelope E.;Yarham, John W.;Taylor, Robert W.
通讯作者:
Taylor, Robert W.
影响因子:
10.7
作者:
Carter, Robert;Drouin, Guy
通讯作者:
Drouin, Guy