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Related Experiment Video

Updated: Jun 15, 2026

The Deese-Roediger-McDermott (DRM) Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory
07:26

The Deese-Roediger-McDermott (DRM) Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory

Published on: January 31, 2017

PINing for things past.

Todd Charlton Sacktor1

  • 1Departments of Physiology, Pharmacology, and Neurology, Robert F. Furchgott Center for Neural and Behavioral Science, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA. tsacktor@downstate.edu

Science Signaling
|March 11, 2010
PubMed
Summary
This summary is machine-generated.

Protein kinase C zeta (PKMzeta) is crucial for maintaining long-term memories. New research reveals how PKMzeta synthesis is regulated, explaining its persistence for months.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cellular Biology

Background:

  • Long-term memory persistence is a key neuroscience enigma.
  • Synaptic plasticity is the basis of memory, but its long-term stability is poorly understood.
  • Protein kinase C zeta (PKMzeta) is essential for maintaining established memories.

Purpose of the Study:

  • Investigate the mechanism sustaining high PKMzeta levels for long-term memory.
  • Elucidate how PKMzeta levels are regulated over extended periods.
  • Understand the role of Pin1 in PKMzeta synthesis and memory maintenance.

Main Methods:

  • Investigated the interaction between PKMzeta and Pin1.
  • Examined the effect of glutamate signaling on Pin1 and PKMzeta.
  • Studied dendritic translation regulation.

Main Results:

  • Pin1 (protein interacting with NIMA 1) inhibits PKMzeta synthesis by repressing dendritic translation.
  • Glutamate signaling inhibits Pin1, thereby enabling PKMzeta synthesis.
  • PKMzeta, once synthesized, inhibits Pin1, creating a positive feedback loop for sustained PKMzeta production.

Conclusions:

  • A regulatory feedback loop involving PKMzeta and Pin1 explains the long-term persistence of memory.
  • This mechanism ensures sufficient PKMzeta levels for maintaining long-term potentiation and memory.
  • The findings provide insight into the molecular basis of memory consolidation and retrieval.