A key role for TGF-β1 in hippocampal synaptic plasticity and memory

Filippo Caraci, Walter Gulisano, Chiara A. Guida, Agata A R Impellizzeri, Filippo Drago, Daniela Puzzo, Agostino Palmeri

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Abstract

Transforming Growth Factor β1 (TGF-β1) is a well-known neuroprotective and neurotrophic factor demonstrated to play a role in synaptic transmission. However, its involvement in physiological mechanisms underlying synaptic plasticity and memory at hippocampal level has not been thoroughly investigated. Here, we examine the role of TGF-β1 in hippocampal long-term potentiation (LTP) and memory in adult wild type mice. Our data provide evidence that administration of exogenous TGF-β1 is able to convert early-phase-LTP into late-phase-LTP. Furthermore, we show that the block of the endogenous TGF-β1 signaling pathway by the specific TGF-β1 inhibitor SB431542, impairs LTP and object recognition memory. The latter impairment was rescued by administration of exogenous TGF-β1, suggesting that endogenously produced TGF-β1 plays a role in physiological mechanisms underlying LTP and memory. Finally, TGF-β1 functional effect correlates with an increased expression of the phosphorylated transcription factor cAMP-Responsive Element Binding protein.

Original languageEnglish
Article number11252
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - Jun 10 2015

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Caraci, F., Gulisano, W., Guida, C. A., Impellizzeri, A. A. R., Drago, F., Puzzo, D., & Palmeri, A. (2015). A key role for TGF-β1 in hippocampal synaptic plasticity and memory. Scientific Reports, 5, [11252]. https://doi.org/10.1038/srep11252