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Pro-apoptotic protein-protein interactions of the extended N-AChE terminus

Debra Toiber1, David S Greenberg, Hermona Soreq

  • 1Department of Biological Chemistry, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, Jerusalem, Israel.

Journal of Neural Transmission (Vienna, Austria : 1996)
|June 18, 2009
PubMed

Insights

The synaptic acetylcholinesterase variant N-AChE-S induces embryonic death and apoptosis. Researchers identified its interacting partners, including kinases and receptors, offering potential Alzheimer's disease therapeutic targets.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Neuroscience

Background:

  • The N-terminally extended synaptic acetylcholinesterase variant (N-AChE-S) promotes apoptosis.
  • Protein partners mediating N-AChE-S function are currently unknown.

Purpose of the Study:

  • To identify protein partners interacting with N-AChE-S.
  • To explore the role of these interactions in N-AChE-S-induced apoptosis and potential therapeutic applications.

Main Methods:

  • Microinjection of N-AChE-S into fertilized mouse oocytes.
  • Yeast two-hybrid screening (initially unsuccessful due to lethality).
  • Peptide array analysis and co-immunoprecipitation for partner validation.

Main Results:

  • N-AChE-S caused embryonic lethality at the zygotic stage in mouse oocytes.
  • Identified interacting partners include kinases (GSK3, Aurora, GAK), integrin receptors, and the FAS death receptor.
  • These interactions suggest modulation of N-AChE-S-induced apoptosis.

Conclusions:

  • N-AChE-S interacts with key signaling proteins involved in apoptosis.
  • These interactions may offer novel therapeutic strategies for Alzheimer's disease.

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