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PTEN recruitment controls synaptic and cognitive function in Alzheimer's models

  • Shira Knafo
  • , Cristina Sánchez-Puelles
  • , Ernest Palomer
  • , Igotz Delgado
  • , Jonathan E. Draffin
  • , Janire Mingo
  • , Tina Wahle
  • , Kanwardeep Kaleka
  • , Liping Mou
  • , Inmaculada Pereda-Perez
  • , Edvin Klosi
  • , Erik B. Faber
  • , Heidi M. Chapman
  • , Laura Lozano-Montes
  • , Ana Ortega-Molina
  • , Lara Ordóñez-Gutiérrez
  • , Francisco Wandosell
  • , Jose Viña
  • , Carlos G. Dotti
  • , Randy A. Hall
  • Rafael Pulido, Nashaat Z. Gerges, Andrew M. Chan, Mark R. Spaller, Manuel Serrano, César Venero, José A. Esteban

Research output: Contribution to journalArticlepeer-review

131 Scopus citations

Abstract

Dyshomeostasis of amyloid-β peptide (Aβ) is responsible for synaptic malfunctions leading to cognitive deficits ranging from mild impairment to full-blown dementia in Alzheimer's disease. Aβ appears to skew synaptic plasticity events toward depression. We found that inhibition of PTEN, a lipid phosphatase that is essential to long-term depression, rescued normal synaptic function and cognition in cellular and animal models of Alzheimer's disease. Conversely, transgenic mice that overexpressed PTEN displayed synaptic depression that mimicked and occluded Aβ-induced depression. Mechanistically, Aβ triggers a PDZ-dependent recruitment of PTEN into the postsynaptic compartment. Using a PTEN knock-in mouse lacking the PDZ motif, and a cell-permeable interfering peptide, we found that this mechanism is crucial for Aβ-induced synaptic toxicity and cognitive dysfunction. Our results provide fundamental information on the molecular mechanisms of Aβ-induced synaptic malfunction and may offer new mechanism-based therapeutic targets to counteract downstream Aβ signaling.

Original languageEnglish
Pages (from-to)443-453
Number of pages11
JournalNature Neuroscience
Volume19
Issue number3
DOIs
StatePublished - 23 Feb 2016
Externally publishedYes

ASJC Scopus subject areas

  • General Neuroscience

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