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• W2006307209 abstract "Acid-sensing ion channel 1a (ASIC1a) is the key proton receptor in nervous systems, mediating acidosis-induced neuronal injury in many neurological disorders, such as ischemic stroke. Up to now, functional ASIC1a has been found exclusively on the plasma membrane. Here, we show that ASIC1a proteins are also present in mitochondria of mouse cortical neurons where they are physically associated with adenine nucleotide translocase. Moreover, purified mitochondria from ASIC1a(-/-) mice exhibit significantly enhanced Ca(2+) retention capacity and accelerated Ca(2+) uptake rate. When challenged with hydrogen peroxide (H2O2), ASIC1a(-/-) neurons are resistant to cytochrome c release and inner mitochondrial membrane depolarization, suggesting an impairment of mitochondrial permeability transition (MPT) due to ASIC1a deletion. Consistently, H2O2-induced neuronal death, which is MPT dependent, is reduced in ASIC1a(-/-) neurons. Additionally, significant increases in mitochondrial size and oxidative stress levels are detected in ASIC1a(-/-) mouse brain, which also displays marked changes (>2-fold) in the expression of mitochondrial proteins closely related to reactive oxygen species signal pathways, as revealed by two-dimensional difference gel electrophoresis followed by mass spectrometry analysis. Our data suggest that mitochondrial ASIC1a may serve as an important regulator of MPT pores, which contributes to oxidative neuronal cell death." @default.
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• W2006307209 date "2013-07-12" @default.
• W2006307209 modified "2023-10-18" @default.
• W2006307209 title "Intracellular ASIC1a regulates mitochondrial permeability transition-dependent neuronal death" @default.
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• W2006307209 doi "https://doi.org/10.1038/cdd.2013.90" @default.
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