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  Single-spike detection in vitro and in vivo with a genetic Ca2+ sensor

Wallace, D. J., Meyer zum Alten Borgloh, S., Astori, S., Yang, Y., Bausen, M., Kugler, S., et al. (2008). Single-spike detection in vitro and in vivo with a genetic Ca2+ sensor. Nature Methods, 5(9), 797-804. doi:10.1038/nmeth.1242.

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Wallace-2008-Single-spike detecti.pdf (beliebiger Volltext), 911KB
 
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http://www.ncbi.nlm.nih.gov/pubmed/19160514 (beliebiger Volltext)
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 Urheber:
Wallace, D. J.1, Autor
Meyer zum Alten Borgloh, S., Autor
Astori, S., Autor
Yang, Y., Autor
Bausen, M., Autor
Kugler, S., Autor
Palmer, A. E., Autor
Tsien, R. Y., Autor
Sprengel, R., Autor
Kerr, J. N.1, Autor
Denk, W., Autor
Hasan, M. T., Autor
Affiliations:
1External Organizations, ou_persistent22              

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Schlagwörter: Action Potentials Animals Brain/*physiology Calcium/*analysis Calmodulin/*genetics Cells, Cultured Dependovirus/genetics *Fluorescence Resonance Energy Transfer Hippocampus/physiology Mice Mice, Inbred C57BL Recombinant Fusion Proteins/*genetics Somatosensory Cortex/physiology Synapses/physiology
 Zusammenfassung: Measurement of population activity with single-action-potential, single-neuron resolution is pivotal for understanding information representation and processing in the brain and how the brain's responses are altered by experience. Genetically encoded indicators of neuronal activity allow long-term, cell type-specific expression. Fluorescent Ca2+ indicator proteins (FCIPs), a main class of reporters of neural activity, initially suffered, in particular, from an inability to report single action potentials in vivo. Although suboptimal Ca2+-binding dynamics and Ca2+-induced fluorescence changes in FCIPs are important factors, low levels of expression also seem to play a role. Here we report that delivering D3cpv, an improved fluorescent resonance energy transfer-based FCIP, using a recombinant adeno-associated virus results in expression sufficient to detect the Ca2+ transients that accompany single action potentials. In upper-layer cortical neurons, we were able to detect transients associated with single action potentials firing at rates of <1 Hz, with high reliability, from in vivo recordings in living mice.

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 Datum: 2008
 Publikationsstatus: Erschienen
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 Identifikatoren: Anderer: 19160514
DOI: 10.1038/nmeth.1242
ISSN: 1548-7091 (Print)
ISSN: 1548-7091 (Linking)
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Titel: Nature Methods
  Alternativer Titel : Nat. Methods
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 5 (9) Artikelnummer: - Start- / Endseite: 797 - 804 Identifikator: -