Please use this identifier to cite or link to this item:
|Title:||Neuronal Activity Induces Synaptic Delivery of hnRNP A2/B1 by a BDNF-Dependent Mechanism in Cultured Hippocampal Neurons||Authors:||Leal, Graciano
Afonso, Pedro M.
Duarte, Carlos B.
|Issue Date:||2014||Publisher:||PLOS||Citation:||LEAL, Graciano; AFONSO, Pedro M.; DUARTE, Carlos B. - Neuronal Activity Induces Synaptic Delivery of hnRNP A2/B1 by a BDNF-Dependent Mechanism in Cultured Hippocampal Neurons. "PLOS one". ISSN 1932-6203. Vol. 9 Nº. 10 (2014)||Serial title, monograph or event:||PLOS one||Volume:||9||Issue:||10||Abstract:||Dendritic protein synthesis plays a critical role in several forms of synaptic plasticity, including BDNF (brain-derived neurotrophic factor)-mediated long-term synaptic potentiation (LTP). Dendritic transcripts are typically transported in a repressed state as components of large ribonucleoprotein complexes, and then translated upon stimulation at, or in the vicinity, of activated synapses. Heterogeneous nuclear ribonucleoprotein A2/B1 (hnRNP A2/B1) is a trans-acting factor involved in dendritic mRNA trafficking, but how the distribution of the protein in dendrites is regulated has not been characterized. Here we found that a fraction of hnRNP A2/B1 is present at the synapse under resting conditions in cultured hippocampal neurons. Accordingly, this ribonucleoprotein was detected in free mRNP, monosomal, and polyribosomal fractions obtained from synaptoneurosomes. Neuronal activity and BDNF treatment increased hnRNP A2/B1 protein levels in the cell body and dendritic compartments, and induced the delivery of this protein to synaptic sites. The activitydependent accumulation of hnRNP A2/B1 at the synapse required, at least in part, the activation of TrkB receptors, presumably by BDNF. This neurotrophin also upregulated the hnRNP A2/B1 mRNA in the soma but was without effect on the abundance of neuritic hnRNP A2/B1 transcripts. These results show that the distribution of hnRNP A2/B1 is regulated by BDNF and by neuronal activity, an effect that may have a role in BDNF-induced synaptic plasticity events.||URI:||http://hdl.handle.net/10316/27646||ISSN:||1932-6203||DOI:||10.1371/journal.pone.0108175||Rights:||openAccess|
|Appears in Collections:||FFUC- Artigos em Revistas Internacionais|
I&D CNC - Artigos em Revistas Internacionais
FCTUC Ciências da Vida - Artigos em Revistas Internacionais
Show full item record
Files in This Item:
|Neuronal Activity Induces.pdf||1.36 MB||Adobe PDF||View/Open|
checked on Nov 8, 2019
WEB OF SCIENCETM
checked on Nov 7, 2019
Page view(s) 5988
checked on Jan 29, 2020
checked on Jan 29, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.