Publication Date:
2010-09-04
Description:
Mechanical stimuli drive many physiological processes, including touch and pain sensation, hearing, and blood pressure regulation. Mechanically activated (MA) cation channel activities have been recorded in many cells, but the responsible molecules have not been identified. We characterized a rapidly adapting MA current in a mouse neuroblastoma cell line. Expression profiling and RNA interference knockdown of candidate genes identified Piezo1 (Fam38A) to be required for MA currents in these cells. Piezo1 and related Piezo2 (Fam38B) are vertebrate multipass transmembrane proteins with homologs in invertebrates, plants, and protozoa. Overexpression of mouse Piezo1 or Piezo2 induced two kinetically distinct MA currents. Piezos are expressed in several tissues, and knockdown of Piezo2 in dorsal root ganglia neurons specifically reduced rapidly adapting MA currents. We propose that Piezos are components of MA cation channels.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3062430/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3062430/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coste, Bertrand -- Mathur, Jayanti -- Schmidt, Manuela -- Earley, Taryn J -- Ranade, Sanjeev -- Petrus, Matt J -- Dubin, Adrienne E -- Patapoutian, Ardem -- DE016927/DE/NIDCR NIH HHS/ -- NS046303/NS/NINDS NIH HHS/ -- R01 NS046303/NS/NINDS NIH HHS/ -- R01 NS046303-08/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2010 Oct 1;330(6000):55-60. doi: 10.1126/science.1193270. Epub 2010 Sep 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, The Scripps Research Institute (TSRI), La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20813920" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Cations/*metabolism
;
Cell Line, Tumor
;
Cell Membrane/chemistry
;
Cloning, Molecular
;
Ganglia, Spinal/cytology
;
Ion Channels/analysis/chemistry/genetics/*metabolism
;
*Mechanotransduction, Cellular
;
Membrane Potentials
;
Mice
;
Molecular Sequence Data
;
Neurons/*metabolism
;
Patch-Clamp Techniques
;
Pressure
;
Protein Structure, Tertiary
;
RNA Interference
;
RNA, Small Interfering/genetics
;
Transfection
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
