Journal
NEUROREPORT
Volume 20, Issue 17, Pages 1572-1576Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WNR.0b013e328332e021
Keywords
anisomycin; hippocampal slice; LTP; synaptic capture; synaptic tag
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Funding
- Queen Elisabeth Fund for medical research
- Belgian Fund for scientific research
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In the CA1 region of mice hippocampal slices, a strong tetanic stimulation of an input pathway triggers a long-lasting long-term potentiation (L-LTP), which requires protein synthesis for the development of its late phase. A weak tetanic stimulation of one pathway, which is incapable of triggering protein synthesis on its own, can nonetheless induce L-LTP if it is preceded by a strong stimulation of another pathway (synaptic capture-mediated L-LTP). We found that anisomycin (25 mu M), a translational inhibitor, impaired the strong stimulation-induced L-LTP more severely when the drug was applied during the whole experiment than when delivered only around the induction period. Taking advantage of this phenomenon, we showed that the synaptic capture-mediated L-LTP was strongly dependent on mRNA translation. NeuroReport 20:1572-1576 (C) 2009 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.
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