ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2013
Disruption of the presynaptic cytomatrix protein bassoon degrades ribbon anchorage, multiquantal release, and sound encoding at the hair cell afferent synapse.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.
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Who cites it
84 citing papers in PubMed, 178 citations in OpenAlex.
- Article
- Structure and function of otoferlin, a synaptic protein of sensory hair cells essential for hearing.Science advances · 2025Article
- Kif1a and intact microtubules maintain synaptic-vesicle populations at ribbon synapses in zebrafish hair cells.The Journal of physiology · 2025Article
- Strengthening Medial Olivocochlear Feedback Reduces the Developmental Impact of Early Noise Exposure.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Chloride binding does not influence prestin motor speed at very high frequencies in the mouse outer hair cell.Structure (London, England : 1993) · 2025Article
- Microtubule networks in zebrafish hair cells facilitate presynapse transport and fusion during development.eLife · 2025Article
- Strengthening Medial Olivocochlear Feedback Reduces the Developmental Impact of Early Noise Exposure.bioRxiv : the preprint server for biology · 2025Article
- A Regional Ultrastructural Analysis of the Cellular and Synaptic Architecture of the Mouse Vestibular Periphery, With Reference to the Chinchilla.The Journal of comparative neurology · 2025Article
- Gating of hair cell CaScience advances · 2025Article
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- CaBP1 and 2 enable sustained CaeLife · 2024Article
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- Identification of rare missense variants in the BSN gene co-segregating with chronic otitis media in a consanguineous Pakistani family.Molecular genetics & genomic medicine · 2024Article
- Analytical Post-Embedding Immunogold-Electron Microscopy with Direct Gold-Labelled Monoclonal Primary Antibodies against RIBEYE A- and B-Domain Suggests a Refined Model of Synaptic Ribbon Assembly.International journal of molecular sciences · 2024Article
- Kif1a and intact microtubules maintain synaptic-vesicle populations at ribbon synapses in zebrafish hair cells.bioRxiv : the preprint server for biology · 2024Article
- Female GluA3-KO mice show early onset hearing loss and afferent swellings in ambient sound levels.bioRxiv : the preprint server for biology · 2024Article
- Diversity matters - extending sound intensity coding by inner hair cells via heterogeneous synapses.The EMBO journal · 2023Review
- Piccolino is required for ribbon architecture at cochlear inner hair cell synapses and for hearing.EMBO reports · 2023Article
- Pharmacological Modulation of Energy and Metabolic Pathways Protects Hearing in the Fus1/Tusc2 Knockout Model of Mitochondrial Dysfunction and Oxidative Stress.Antioxidants (Basel, Switzerland) · 2023Article
- Article
24 more citing papers are in PubMed but not listed here.
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8 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Inner hair cells (IHCs) of the cochlea use ribbon synapses to transmit auditory information faithfully to spiral ganglion neurons (SGNs). In the present study, we used genetic disruption of the presynaptic scaffold protein bassoon in mice to manipulate the morphology and function of the IHC synapse. Although partial-deletion mutants lacking functional bassoon (Bsn(ΔEx4/5)) had a near-complete loss of ribbons from the synapses (up to 88% ribbonless synapses), gene-trap mutants (Bsn(gt)) showed weak residual expression of bassoon and 56% ribbonless synapses, whereas the remaining 44% had a loosely anchored ribbon. Patch-clamp recordings and synaptic CaV1.3 immunolabeling indicated a larger number of Ca(2+) channels for Bsn(gt) IHCs compared with Bsn(ΔEx4/5) IHCs and for Bsn(gt) ribbon-occupied versus Bsn(gt) ribbonless synapses. An intermediate phenotype of Bsn(gt) IHCs was also found by membrane capacitance measurements for sustained exocytosis, but not for the size of the readily releasable vesicle pool. The frequency and amplitude of EPSCs were reduced in Bsn(ΔEx4/5) mouse SGNs, whereas their postsynaptic AMPA receptor clusters were largely unaltered. Sound coding in SGN, assessed by recordings of single auditory nerve fibers and their population responses in vivo, was similarly affected in Bsn(gt) and Bsn(ΔEx4/5) mice. Both genotypes showed impaired sound onset coding and reduced evoked and spontaneous spike rates. In summary, reduced bassoon expression or complete lack of full-length bassoon impaired sound encoding to a similar extent, which is consistent with the comparable reduction of the readily releasable vesicle pool. This suggests that the remaining loosely anchored ribbons in Bsn(gt) IHCs were functionally inadequate or that ribbon independent mechanisms dominated the coding deficit.
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