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BDNF and its pro-peptide are stored in presynaptic dense core vesicles in brain neurons

Dieni, Sandra, Matsumoto, Tomoya, Dekkers, Martijn, Rauskolb, Stefanie, Ionescu, Mihai S., Deogracias, Ruben, Gundelfinger, Eckart D., Kojima, Masami, Nestel, Sigrun, Frotscher, Michael and Barde, Yves-Alain 2012. BDNF and its pro-peptide are stored in presynaptic dense core vesicles in brain neurons. Journal of Cell Biology 196 (6) , pp. 775-788. 10.1083/jcb.201201038

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Abstract

Although brain-derived neurotrophic factor (BDNF) regulates numerous and complex biological processes including memory retention, its extremely low levels in the mature central nervous system have greatly complicated attempts to reliably localize it. Using rigorous specificity controls, we found that antibodies reacting either with BDNF or its pro-peptide both stained large dense core vesicles in excitatory presynaptic terminals of the adult mouse hippocampus. Both moieties were ∼10-fold more abundant than pro-BDNF. The lack of postsynaptic localization was confirmed in Bassoon mutants, a seizure-prone mouse line exhibiting markedly elevated levels of BDNF. These findings challenge previous conclusions based on work with cultured neurons, which suggested activity-dependent dendritic synthesis and release of BDNF. They instead provide an ultrastructural basis for an anterograde mode of action of BDNF, contrasting with the long-established retrograde model derived from experiments with nerve growth factor in the peripheral nervous system.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Subjects: Q Science > QH Natural history > QH301 Biology
Additional Information: Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0021-9525/ (accessed 12/03/2014).
Publisher: Rockefeller University Press
ISSN: 0021-9525
Date of First Compliant Deposit: 30 March 2016
Last Modified: 04 Jun 2017 05:21
URI: http://orca.cf.ac.uk/id/eprint/51119

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