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Updated: Mar 25, 2026

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation
Published on: June 26, 2013
Sirt1 Regulates p53 Stability and Expression of Its Target S100B during Long-Term Potentiation in Rat Hippocampus
P D Lisachev1, V O Pustylnyak2,3, M B Shtark4
1Design and Technology Institute of Computer Science, Siberian Division of the Russian Academy of Medical Science, Moscow, Russia.
Abstract:
Induction of long-term potentiation in rat hippocampus was followed by short-term activation of transcription factor p53 and its subsequent degradation. We studied the effects of EX-527 (inhibitor of deacetylase Sirt1, a negative regulator of p53) and pifi thrin-β (inhibitor of p53-dependent transcription) on the levels of p53 protein and mRNA of its target gene S100B during long-term potentiation. Pifi thrin-β limited the increase in S100B mRNA content after tetanization, which confi rmed signifi cant contribution of p53 in the regulation of S100B during long-term potentiation. EX-527 completely prevented p53 degradation and increased S100B expression induced by tetanization. Thus, Str1 regulates stability of p53 and expression of its target gene S100B in rat hippocampus during long-term potentiation.
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