A Method for Activation of Endogenous Acid-sensing Ion Channel 1a (ASIC1a) in the Nervous System with High Spatial and Temporal Precision
نویسندگان
چکیده
منابع مشابه
A method for activation of endogenous acid-sensing ion channel 1a (ASIC1a) in the nervous system with high spatial and temporal precision.
Protons activate acid-sensing ion channel 1a (ASIC1a) in the central nervous system (CNS) although the impact of such activation on brain outputs remains elusive. Progress elucidating the functional roles of ASIC1a in the CNS has been hindered by technical difficulties of achieving acidification with spatial and temporal precision. We have implemented a method to control optically the opening o...
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Acid-sensing ion channels (ASICs) are voltage-independent Na(+) channels activated by extracellular protons. ASIC1a is expressed in neurons in mammalian brain and is implicated in long term potentiation of synaptic transmission that contributes to learning and memory. In ischemic brain injury, however, activation of this Ca(2+)-permeable channel plays a critical role in acidosis-mediated, gluta...
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Acid-sensing ion channels (ASICs) are sodium channels gated by extracellular protons. The recent crystallization of ASIC1a identified potential binding sites for Cl(-) in the extracellular domain that are highly conserved between ASIC isoforms. However, the significance of Cl(-) binding is unknown. We investigated the effect of Cl(-) substitution on heterologously expressed ASIC1a current and H...
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Objective(s): Activation of acid-sensing ion channel 1a (ASIC1a) is responsible for tissue injury caused by acidosis in nervous systems. But its physiological and pathological roles in nucleus pulposus cells (NPCs) are unclear. The aim of this study is to investigate whether ASIC1a regulates the survival of NPCs in the acidic environment of degenerated discs. Materials and Methods: NPCs were i...
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Acid-sensing ion channel-1a (ASIC1a) is localized in brain regions with high synaptic density and is thought to contribute to synaptic plasticity, learning, and memory. A prominent hypothesis is that activation of postsynaptic ASICs promotes depolarization, thereby augmenting N-methyl-d-aspartate receptor function and contributing to the induction of long-term potentiation (LTP). However, evide...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2014
ISSN: 0021-9258
DOI: 10.1074/jbc.m114.550012