Local inhibition of PERK enhances memory and reverses age-related deterioration of cognitive and neuronal properties

Vijendra Sharma, Hadile Ounallah-Saad, Darpan Chakraborty, Mohammad Hleihil, Rapita Sood, Iliana Barrera, Efrat Edry, Sailendrakumar Kolatt Chandran, Shlomo Ben Tabou de Leon, Hanoch Kaphzan, Kobi Rosenblum

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK) is one of four known kinases that respond to cellular stress by deactivating the eukaryotic initiation factor 2 β (eIF2β) or other signal transduction cascades. Recently, both eIF2β and its kinases were found to play a role in normal and pathological brain function. Here, we show that reduction of either the amount or the activity of PERK, specifically in the CA1 region of the hippocampus in young adult male mice, enhances neuronal excitability and improves cognitive function. In addition, this manipulation rescues the age-dependent cellular phenotype of reduced excitability and memory decline. Specifically, the reduction of PERK expression in the CA1 region of the hippocampus of middle-aged male mice using a viral vector rejuvenates hippocampal function and improves hippocampal-dependent learning. These results delineate a mechanism for behavior and neuronal aging and position PERK as a promising therapeutic target for age-dependent brain malfunction.

Original languageEnglish
Pages (from-to)648-658
Number of pages11
JournalJournal of Neuroscience
Volume38
Issue number3
DOIs
StatePublished - 17 Jan 2018
Externally publishedYes

Keywords

  • Aging
  • Intrinsic properties
  • Memory enhancement
  • PERK
  • Translation regulation

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