Endogenous Neuropeptide Nocistatin Is a Direct Agonist of Acid-Sensing Ion Channels (ASIC1, ASIC2 and ASIC3)
نویسندگان
چکیده
منابع مشابه
Nonproton ligand sensing domain is required for paradoxical stimulation of acid-sensing ion channel 3 (ASIC3) channels by amiloride.
Acid-sensing ion channels (ASICs), which belong to the epithelial sodium channel/degenerin family, are activated by extracellular protons and are inhibited by amiloride (AMI), an important pharmacological tool for studying all known members of epithelial sodium channel/degenerin. In this study, we reported that AMI paradoxically opened homomeric ASIC3 and heteromeric ASIC3 plus ASIC1b channels ...
متن کاملASIC2 subunits target acid-sensing ion channels to the synapse via an association with PSD-95.
Acid-sensing ion channel-1a (ASIC1a) mediates H(+)-gated current to influence normal brain physiology and impact several models of disease. Although ASIC2 subunits are widely expressed in brain and modulate ASIC1a current, their function remains poorly understood. We identified ASIC2a in dendrites, dendritic spines, and brain synaptosomes. This localization largely relied on ASIC2a binding to P...
متن کاملAcid-Sensing Ion Channels
Acetylcholine is a neurotransmitter synthesized from choline and acetyl coenzyme A. It is localized in large reticular formation neurons, and is the chemical mediator in the synapse of a motor endplate. The electrical signal of the motor nerve terminal causes release of many packets of acetylcholine. The packets are released into the synaptic cleft, where receptors in the postjunctional membran...
متن کاملFunctional implications of the localization and activity of acid-sensitive channels in rat peripheral nervous system.
Acid-sensitive ion channels (ASIC) are proton-gated ion channels expressed in neurons of the mammalian central and peripheral nervous systems. The functional role of these channels is still uncertain, but they have been proposed to constitute mechanoreceptors and/or nociceptors. We have raised specific antibodies for ASIC1, ASIC2, ASIC3, and ASIC4 to examine the distribution of these proteins i...
متن کاملAcid-sensing ion channel-2 is not necessary for sour taste in mice.
The acid-sensitive cation channel acid-sensing ion channel-2 (ASIC2) is widely believed to be a receptor for acid (sour) taste in mammals on the basis of its physiological properties and expression in rat taste bud cells. Using reverse transcriptase-PCR, we detected expression of ASIC1 and ASIC3, but not ASIC4, in mouse and rat taste buds and nonsensory lingual epithelium. Surprisingly, we did ...
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ژورنال
عنوان ژورنال: Biomolecules
سال: 2019
ISSN: 2218-273X
DOI: 10.3390/biom9090401