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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kandel, Eric R. Hegde, Ashok N. Si, Kausik Inokuchi, Kaoru Pei, Wanzheng Giustetto, Maurizio Schwartz, James H. Casadio, Andrea |
| Description | Author Affiliation: Giustetto M ( Center for Neurobiology and Behavior, College of Physicians and Surgeons, New York State Psychiatric Institute, and Howard Hughes Medical Institute, Columbia University, 1051 Riverside Drive, New York, NY 10032, USA.); |
| Abstract | Long-term synaptic plasticity requires both gene expression in the nucleus and local protein synthesis at synapses. The effector proteins that link molecular events in the cell body with local maintenance of synaptic strength are not known. We now show that treatment with serotonin (5-HT) that produces long-term facilitation induces the Aplysia eukaryotic translation elongation factor 1alpha (Ap-eEF1A) as a late gene that might serve this coupling function in sensory neurons. Although the translation factor is induced, it is not transported into axon processes when the stimulation with 5-HT was restricted to the cell body. In contrast, its mRNA is transported when 5-HT was applied to both cell body and synapses. Intracellular injection of antisense oligonucleotides or antibodies that block the induction and expression of Ap-eEF1A do not affect the initial expression of long-term facilitation but do block its maintenance beyond 24 h. The transport of eEF1A protein and its mRNA to nerve terminals suggests that the translation factor plays a role in the local protein synthesis that is essential for maintaining newly formed synapses. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 100 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2003-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Axons Metabolism Cell Nucleus Eukaryotic Initiation Factor-1 Peptide Elongation Factor 1 Physiology Peptide Initiation Factors Transcription, Genetic Animals Antibodies Aplysia Biological Transport Cyclic AMP Electrophysiology Exons Neurons Oligonucleotides, Antisense RNA, Messenger Serotonin Synapses Time Factors Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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