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Positive and negative regulatory mechanisms that mediate long-term memory storage
1Howard Hughes Medical Institute, Center for Neurobiology and Behavior, Columbia University, 722 West 168th Street, New York, NY 10032, USA.
Brain Research. Brain Research Reviews
|July 4, 1998
Summary
The protein kinase A pathway and CREB are crucial for memory consolidation across species. Negative regulatory mechanisms, like tumor suppressor genes, also play a role in memory storage.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- The protein kinase A (PKA) pathway and cyclic AMP-response element binding protein (CREB) are implicated in memory formation.
- These molecular mechanisms are conserved across diverse animal models.
Purpose of the Study:
- To review the molecular machinery underlying memory consolidation.
- To explore the roles of both positive and negative regulatory mechanisms in memory storage.
Main Methods:
- Review of existing literature on memory consolidation mechanisms.
- Comparative analysis of molecular pathways in Aplysia, Drosophila, and mice.
Main Results:
- The PKA pathway and CREB are central to consolidating short-term neuronal changes into long-term memory.
- Memory storage involves both positive and negative regulatory elements.
- Evidence suggests the existence of 'memory suppressor genes' that inhibit memory formation.
Conclusions:
- Memory consolidation is a complex process involving intricate molecular networks.
- Negative regulation is as critical as positive regulation in memory storage.
- The discovery of potential memory suppressor genes opens new avenues for research.