3D Ultrastructure of the Cochlear Outer Hair Cell Lateral Wall Revealed By Electron Tomography

Simple item page
dc.citation.articleNumber560en_US
dc.citation.journalTitleFrontiers in Cellular Neuroscienceen_US
dc.citation.volumeNumber13en_US
dc.contributor.authorTriffo, William Jeffreyen_US
dc.contributor.authorPalsdottir, Hilduren_US
dc.contributor.authorSong, Junhaen_US
dc.contributor.authorMorgan, David Geneen_US
dc.contributor.authorMcDonald, Kent L.en_US
dc.contributor.authorAuer, Manfreden_US
dc.contributor.authorRaphael, Robert M.en_US
dc.date.accessioned2021-10-06T14:15:48Zen_US
dc.date.available2021-10-06T14:15:48Zen_US
dc.date.issued2019en_US
dc.description.abstractOuter Hair Cells (OHCs) in the mammalian cochlea display a unique type of voltage-induced mechanical movement termed electromotility, which amplifies auditory signals and contributes to the sensitivity and frequency selectivity of mammalian hearing. Electromotility occurs in the OHC lateral wall, but it is not fully understood how the supramolecular architecture of the lateral wall enables this unique form of cellular motility. Employing electron tomography of high-pressure frozen and freeze-substituted OHCs, we visualized the 3D structure and organization of the membrane and cytoskeletal components of the OHC lateral wall. The subsurface cisterna (SSC) is a highly prominent feature, and we report that the SSC membranes and lumen possess hexagonally ordered arrays of particles. We also find the SSC is tightly connected to adjacent actin filaments by short filamentous protein connections. Pillar proteins that join the plasma membrane to the cytoskeleton appear as variable structures considerably thinner than actin filaments and significantly more flexible than actin-SSC links. The structurally rich organization and rigidity of the SSC coupled with apparently weaker mechanical connections between the plasma membrane (PM) and cytoskeleton reveal that the membrane-cytoskeletal architecture of the OHC lateral wall is more complex than previously appreciated. These observations are important for our understanding of OHC mechanics and need to be considered in computational models of OHC electromotility that incorporate subcellular features.en_US
dc.identifier.citationTriffo, William Jeffrey, Palsdottir, Hildur, Song, Junha, et al.. "3D Ultrastructure of the Cochlear Outer Hair Cell Lateral Wall Revealed By Electron Tomography." <i>Frontiers in Cellular Neuroscience,</i> 13, (2019) Frontiers: https://doi.org/10.3389/fncel.2019.00560.en_US
dc.identifier.digitalfncel-13-00560en_US
dc.identifier.doihttps://doi.org/10.3389/fncel.2019.00560en_US
dc.identifier.urihttps://hdl.handle.net/1911/111484en_US
dc.language.isoengen_US
dc.publisherFrontiersen_US
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.title3D Ultrastructure of the Cochlear Outer Hair Cell Lateral Wall Revealed By Electron Tomographyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
fncel-13-00560.pdf
Size:
5.23 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Bioengineering Publications