Cited by 258Neuroscience and Neuropharmacology ResearchCellular transport and secretionGenetics and Neurodevelopmental Disorders

Functional inactivation of a fraction of excitatory synapses in mice deficient for the active zone protein bassoon

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Altrock, Wilko D., tom Dieck, Susanne, Sokolov, Maxim, Meyer, Alexander C., Sigler, Albrecht, Brakebusch, Cord, Fässler, Reinhard, Richter, Karin +14 more·2003·Neuron

Abstract

Mutant mice lacking the central region of the presynaptic active zone protein Bassoon were generated to establish the role of this protein in the assembly and function of active zones as sites of synaptic vesicle docking and fusion. Our data show that the loss of Bassoon causes a reduction in normal synaptic transmission, which can be attributed to the inactivation of a significant fraction of glutamatergic synapses. At these synapses, vesicles are clustered and docked in normal numbers but are unable to fuse. Phenotypically, the loss of Bassoon causes spontaneous epileptic seizures. These data show that Bassoon is not essential for synapse formation but plays an essential role in the regulated neurotransmitter release from a subset of glutamatergic synapses.

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  • Partial knockout of bassoon causes partial lethality and impairs neurotransmitter release.

    “Partial knockout of bassoon causes partial lethality and impairs neurotransmitter release (Altrock et al., 2003)”

    From The Presynaptic Active Zone (2012) · cites this paper as Altrock et al., 2003

    Figure 1 describes a targeted deletion of part of exon 4 and all of exon 5 in the Bsn gene; the experiments concern homozygous mutants that lack wild-type Bassoon, rather than a clearly defined ‘partial knockout.’ The paper reports fewer actively releasing synapses and reduced evoked responses, supporting impaired neurotransmitter release. No passage found on lethality or survival supports the partial-lethality claim (pages not supplied in our copy). (LLM, conf=0.83)

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  1. Brewer, G.J., and Cotman, C.W. (1989). Survival and groWTh of Cells, Third Edition (Cambridge: Oxford University Press), hippocampal neurons in defined medium at low density: advantages pp.138-211.

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Authors
Altrock, W. D., tom Dieck, S., Sokolov, M., Meyer, A. C., Sigler, A., Brakebusch, C., Fässler, R., Richter, K., Boeckers, T. M., Potschka, H., Brandt, C., Löscher, W., Grimberg, D., Dresbach, T., Hempelmann, A., Hassan, H., Balschun, D., Frey, J. U., Brandstätter, J. H., Garner, C. C., Rosenmund, C., & Gundelfinger, E. D.
Affiliations
  • Leibniz Institute for Neurobiology (DE)
  • Max Planck Institute for Biophysical Chemistry (DE)
  • Max Planck Society (DE)
  • Otto-von-Guericke-Universität Magdeburg (DE)
  • University of Münster (DE)
  • University of Veterinary Medicine Hannover, Foundation (DE)
  • Max Planck Institute for Brain Research (DE)
  • Stanford University (US)
Corresponding author
Gundelfinger, Eckart D.
Venue
Neuron
Publisher
Elsevier BV
Published
2003-03
Volume
37
Issue
5
Pages
787-800
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2091013445
Cited by
258
References
47
Citations by year
2026: 5 · 2025: 5 · 2024: 6 · 2023: 10 · 2022: 11 · 2021: 7 · 2020: 11 · 2019: 8 · 2018: 8 · 2017: 13 · 2016: 9 · 2015: 9 · 2014: 11 · 2013: 14 · 2012: 13
FWCI
5.26
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
Funders
  • National Institutes of Health (5p01ag006569-13, 5p50hd032901-05)
  • National Institute on Aging (P01 AG06569)
  • National Institute of Neurological Disorders and Stroke (R01NS039471, R01-NS39471)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P50 HD32901)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
bassoon, active zone, excitatory synapses, glutamatergic synapses, synaptic vesicle fusion, synaptic vesicle docking, synaptic transmission, synaptogenesis, mouse mutants
MeSH terms
Animals, Cells, Cultured, Hippocampus, Male, Mice, Mutant Strains, Mutation, Nerve Tissue Proteins, Neurons, Synapses, Excitatory Postsynaptic Potentials, Gene Silencing, Mice, In Vitro Techniques

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