PMID- 17330943 OWN - NLM STAT- MEDLINE DCOM- 20070606 LR - 20071203 IS - 1535-3893 (Print) IS - 1535-3893 (Linking) VI - 6 IP - 3 DP - 2007 Mar TI - BDNF induces widespread changes in synaptic protein content and up-regulates components of the translation machinery: an analysis using high-throughput proteomics. PG - 1059-71 AB - The brain-derived neurotrophic factor (BDNF) plays an important role in neuronal development, and in the formation and plasticity of synaptic connections. These effects of BDNF are at least partially due to the ability of the neurotrophin to increase protein synthesis both globally and locally. However, only a few proteins have been shown to be up-regulated at the synapse by BDNF. Using multidimensional protein identification technology (MudPIT) and relative quantification by spectra counting, we found that several hundred proteins are up-regulated in a synaptoneurosome preparation derived from cultured cortical neurons that were treated with BDNF. These proteins fall into diverse functional categories, including those involved in synaptic vesicle formation and movement, maintenance or remodeling of synaptic structure, mRNA processing, transcription, and translation. A number of translation factors, ribosomal proteins, and tRNA synthetases were rapidly up-regulated by BDNF. This up-regulation of translation components was sensitive to protein synthesis inhibitors and dependent on the activation of the mammalian target of rapamycin (mTOR), a regulator of cap-dependent mRNA translation. The presence of a subset of these proteins and their mRNAs in neuronal processes was corroborated by immunocytochemistry and in situ hybridization, and their up-regulation was confirmed by Western blotting. The data demonstrate that BDNF increases the synthesis of a wide variety of synaptic proteins and suggest that the neurotrophin may enhance the translational capacity of synapses. FAU - Liao, Lujian AU - Liao L AD - Departments of Cell Biology and Neurobiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA. FAU - Pilotte, Julie AU - Pilotte J FAU - Xu, Tao AU - Xu T FAU - Wong, Catherine C L AU - Wong CC FAU - Edelman, Gerald M AU - Edelman GM FAU - Vanderklish, Peter AU - Vanderklish P FAU - Yates, John R 3rd AU - Yates JR 3rd LA - eng GR - 5R01MH067880/MH/NIMH NIH HHS/United States GR - P41RR11823-10/RR/NCRR NIH HHS/United States GR - U01DE016267-03/DE/NIDCR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Proteome Res JT - Journal of proteome research JID - 101128775 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (RNA, Messenger) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*physiology MH - Cells, Cultured MH - Nerve Growth Factors/physiology MH - Nerve Tissue Proteins/*analysis/genetics MH - Neurons/*cytology MH - Protein Biosynthesis MH - Proteomics/*methods MH - RNA, Messenger/analysis MH - Rats MH - Rats, Sprague-Dawley MH - Synapses/*chemistry/metabolism MH - *Up-Regulation EDAT- 2007/03/03 09:00 MHDA- 2007/06/07 09:00 CRDT- 2007/03/03 09:00 PHST- 2007/03/03 09:00 [pubmed] PHST- 2007/06/07 09:00 [medline] PHST- 2007/03/03 09:00 [entrez] AID - 10.1021/pr060358f [doi] PST - ppublish SO - J Proteome Res. 2007 Mar;6(3):1059-71. doi: 10.1021/pr060358f.