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Measuring APP carboxy-terminal fragments.

Luke A Esposito1

  • 1ProteoTech, Inc, Kirkland, WA, USA. esposito@proteotech.com

Methods in Molecular Biology (Clifton, N.J.)
|October 23, 2010
PubMed
Summary

Alzheimer

Area of Science:

  • Neuroscience
  • Biochemistry
  • Molecular Biology

Background:

  • Amyloid-beta (Aβ) accumulation is central to Alzheimer's disease (AD) pathogenesis.
  • APP cleavage by BACE1 and γ-secretase generates Aβ, making these enzymes therapeutic targets.
  • APP processing can be alternatively cleaved by α-secretase, preventing Aβ formation.

Purpose of the Study:

  • To develop and validate sensitive methods for quantifying APP C-terminal fragments (CTFs) and Aβ.
  • To investigate the impact of genetic manipulation on APP processing and Aβ generation in vivo.
  • To assess the utility of these methods in understanding Alzheimer's disease mechanisms.

Main Methods:

  • Development of highly sensitive and specific assays for APP CTFs and Aβ.
  • Utilizing transgenic mouse models overexpressing human APP.

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  • Quantification of APP processing intermediates and Aβ species.

    • Main Results:

    • Established robust methods for measuring APP CTFs and Aβ levels.
    • Demonstrated the generation of APP CTFs and Aβ in transgenic APP mice.
    • Showcased the utility of these assays in tracking changes in APP processing.

    Conclusions:

    • Sensitive quantification of APP CTFs and Aβ is crucial for studying Alzheimer's disease.
    • These methods facilitate the understanding of how genetic modifications affect APP processing.
    • The developed assays are valuable tools for AD research and therapeutic target validation.