Alternating metabolic pathways in NGF-deprived sympathetic neurons affect caspase-independent death.
Alternating metabolic pathways in NGF-deprived sympathetic neurons affect caspase-independent death.
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DOI:
10.1083/jcb.200302109
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发表时间:
2003-07-21
期刊:
影响因子:
--
通讯作者:
Johnson EM Jr
中科院分区:
文献类型:
--
作者:
Chang LK;Schmidt RE;Johnson EM Jr
Mitochondrial release of cytochrome c in apoptotic cells activates caspases, which execute apoptotic cell death. However, the events themselves that culminate in caspase activation can have deleterious effects because caspase inhibitor–saved cells ultimately die in a caspase-independent manner. To determine what events may underlie this form of cell death, we examined bioenergetic changes in sympathetic neurons deprived of NGF in the presence of a broad-spectrum caspase inhibitor, boc-aspartyl-(OMe)-fluoromethylketone. Here, we report that NGF-deprived, boc-aspartyl-(OMe)-fluoromethylketone–saved neurons rely heavily on glycolysis for ATP generation and for survival. Second, the activity of F0F1 contributes to caspase-independent death, but has only a minor role in the maintenance of mitochondrial membrane potential, which is maintained primarily by electron transport. Third, permeability transition pore inhibition by cyclosporin A attenuates NGF deprivation–induced loss of mitochondrial proteins, suggesting that permeability transition pore opening may have a function in regulating the degradation of mitochondria after cytochrome c release. Identification of changes in caspase inhibitor–saved cells may provide the basis for rational strategies to augment the effectiveness of the therapeutic use of postmitochondrial interventions.
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影响因子:
7.8
作者:
Miller, T M;Moulder, K L;Knudson, C M;Creedon, D J;Deshmukh, M;Korsmeyer, S J;Johnson, E M Jr
通讯作者:
Johnson, E M Jr
影响因子:
64.5
作者:
Du, CY;Fang, M;Wang, XD
通讯作者:
Wang, XD
影响因子:
4.1
作者:
James, AM;Wei, YH;Murphy, MP
通讯作者:
Murphy, MP
DOI:
10.1083/jcb.123.5.1207
发表时间:
1993-12
期刊:
The Journal of cell biology
影响因子:
--
作者:
Deckwerth TL;Johnson EM Jr
通讯作者:
Johnson EM Jr
影响因子:
4.8
作者:
Cai, JY;Jones, DP
通讯作者:
Jones, DP