TY - JOUR
T1 - PTEN recruitment controls synaptic and cognitive function in Alzheimer's models
AU - Knafo, Shira
AU - Sánchez-Puelles, Cristina
AU - Palomer, Ernest
AU - Delgado, Igotz
AU - Draffin, Jonathan E.
AU - Mingo, Janire
AU - Wahle, Tina
AU - Kaleka, Kanwardeep
AU - Mou, Liping
AU - Pereda-Perez, Inmaculada
AU - Klosi, Edvin
AU - Faber, Erik B.
AU - Chapman, Heidi M.
AU - Lozano-Montes, Laura
AU - Ortega-Molina, Ana
AU - Ordóñez-Gutiérrez, Lara
AU - Wandosell, Francisco
AU - Viña, Jose
AU - Dotti, Carlos G.
AU - Hall, Randy A.
AU - Pulido, Rafael
AU - Gerges, Nashaat Z.
AU - Chan, Andrew M.
AU - Spaller, Mark R.
AU - Serrano, Manuel
AU - Venero, César
AU - Esteban, José A.
N1 - Publisher Copyright:
© 2016 Nature America, Inc. All rights reserved.
PY - 2016/2/23
Y1 - 2016/2/23
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84959140220&partnerID=8YFLogxK
U2 - 10.1038/nn.4225
DO - 10.1038/nn.4225
M3 - Article
C2 - 26780512
AN - SCOPUS:84959140220
SN - 1097-6256
VL - 19
SP - 443
EP - 453
JO - Nature Neuroscience
JF - Nature Neuroscience
IS - 3
ER -