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  Time-lapse imaging reveals highly dynamic structural maturation of postnatally born dentate granule cells in organotypic entorhino-hippocampal slice cultures

Radic, T., Jungenitz, T., Singer, M., Beining, M., Cuntz, H., Vlachos, A., Deller, T., & Schwarzacher, S. W. (2017). Time-lapse imaging reveals highly dynamic structural maturation of postnatally born dentate granule cells in organotypic entorhino-hippocampal slice cultures. Sci Rep, 7. doi:10.1038/srep43724.

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資料種別: 学術論文
その他のタイトル : Sci Rep

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 作成者:
Radic, T., 著者
Jungenitz, T., 著者
Singer, M., 著者
Beining, M.1, 著者
Cuntz, H., 著者
Vlachos, A., 著者
Deller, T., 著者
Schwarzacher, S. W., 著者
所属:
1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, Deutschordenstr. 46, 60528 Frankfurt, DE, ou_2074314              

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 要旨: Neurogenesis of hippocampal granule cells (GCs) persists throughout mammalian life and is important for learning and memory. How newborn GCs differentiate and mature into an existing circuit during this time period is not yet fully understood. We established a method to visualize postnatally generated GCs in organotypic entorhino-hippocampal slice cultures (OTCs) using retroviral (RV) GFP-labeling and performed time-lapse imaging to study their morphological development in vitro. Using anterograde tracing we could, furthermore, demonstrate that the postnatally generated GCs in OTCs, similar to adult born GCs, grow into an existing entorhino-dentate circuitry. RV-labeled GCs were identified and individual cells were followed for up to four weeks post injection. Postnatally born GCs exhibited highly dynamic structural changes, including dendritic growth spurts but also retraction of dendrites and phases of dendritic stabilization. In contrast, older, presumably prenatally born GCs labeled with an adeno-associated virus (AAV), were far less dynamic. We propose that the high degree of structural flexibility seen in our preparations is necessary for the integration of newborn granule cells into an already existing neuronal circuit of the dentate gyrus in which they have to compete for entorhinal input with cells generated and integrated earlier.

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 日付: 2017
 出版の状態: 出版
 ページ: -
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 識別子(DOI, ISBNなど): URI: http://www.ncbi.nlm.nih.gov/pubmed/28256620
その他: 1649
DOI: 10.1038/srep43724
 学位: -

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出版物名: Sci Rep
  出版物の別名 : Scientific reports
種別: 学術雑誌
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出版社, 出版地: -
ページ: 43724 巻号: 7 通巻号: - 開始・終了ページ: - 識別子(ISBN, ISSN, DOIなど): ISBN: 2045-2322 (Electronic)2045-2322 (Linking)