In vivo levels of mitochondrial hydrogen peroxide increase with age in mtDNA mutator mice.
In vivo levels of mitochondrial hydrogen peroxide increase with age in mtDNA mutator mice.
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DOI:
10.1111/acel.12212
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发表时间:
2014-08
期刊:
影响因子:
7.8
通讯作者:
Murphy MP
中科院分区:
文献类型:
--
作者:
Logan A;Shabalina IG;Prime TA;Rogatti S;Kalinovich AV;Hartley RC;Budd RC;Cannon B;Murphy MP
In mtDNA mutator mice, mtDNA mutations accumulate leading to a rapidly aging phenotype. However, there is little evidence of oxidative damage to tissues, and when analyzed ex vivo, no change in production of the reactive oxygen species (ROS) superoxide and hydrogen peroxide by mitochondria has been reported, undermining the mitochondrial oxidative damage theory of aging. Paradoxically, interventions that decrease mitochondrial ROS levels in vivo delay onset of aging. To reconcile these findings, we used the mitochondria-targeted mass spectrometry probe MitoB to measure hydrogen peroxide within mitochondria of living mice. Mitochondrial hydrogen peroxide was the same in young mutator and control mice, but as the mutator mice aged, hydrogen peroxide increased. This suggests that the prolonged presence of mtDNA mutations in vivo increases hydrogen peroxide that contributes to an accelerated aging phenotype, perhaps through the activation of pro-apoptotic and pro-inflammatory redox signaling pathways.
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DOI:
10.1042/bj20081386
发表时间:
2009-01-01
期刊:
The Biochemical journal
影响因子:
--
作者:
Murphy MP
通讯作者:
Murphy MP
影响因子:
29
作者:
Cochemé HM;Quin C;McQuaker SJ;Cabreiro F;Logan A;Prime TA;Abakumova I;Patel JV;Fearnley IM;James AM;Porteous CM;Smith RA;Saeed S;Carré JE;Singer M;Gems D;Hartley RC;Partridge L;Murphy MP
通讯作者:
Murphy MP
DOI:
10.1126/science.1201940
发表时间:
2011-08-26
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Green DR;Galluzzi L;Kroemer G
通讯作者:
Kroemer G
影响因子:
30.8
作者:
Vermulst, Marc;Bielas, Jason H.;Loeb, Lawrence A.
通讯作者:
Loeb, Lawrence A.
影响因子:
29
作者:
Ahlqvist, Kati J.;Hamalainen, Riikka H.;Suomalainen, Anu
通讯作者:
Suomalainen, Anu