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Copper and prion disease.

D R Brown1

  • 1Department of Biochemistry, Cambridge University, Cambridge, UK. drb33@cam.ac.uk

Brain Research Bulletin
|July 27, 2001
PubMed
Summary
This summary is machine-generated.

The prion protein, a cell surface glycoprotein in neurons, binds copper and influences brain copper metabolism. Prion diseases may arise from disruptions in this copper homeostasis.

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Cell Biology

Background:

  • The function of the prion protein, a neuronal cell surface glycoprotein, was previously unknown.
  • Recent findings indicate the prion protein is a copper-binding protein.

Purpose of the Study:

  • To investigate the role of the prion protein in normal brain copper metabolism.
  • To explore the implications of prion protein function in prion diseases.

Main Methods:

  • Investigated copper binding properties of the prion protein.
  • Assessed the effect of prion protein expression on cellular copper uptake.
  • Examined the prion protein's role in superoxide dismutase activity.
  • Studied the conversion of functional prion protein to aggregated amyloid forms.

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Main Results:

  • The prion protein binds copper and plays a role in brain copper metabolism.
  • Prion protein expression affects cellular copper uptake and enhances copper incorporation into superoxide dismutase.
  • The prion protein exhibits superoxide dismutase activity.
  • Conversion to aggregated amyloid forms may alter or abolish prion protein function.

Conclusions:

  • Prion protein is crucial for normal brain copper metabolism.
  • Prion diseases might stem from disturbances in brain copper homeostasis due to altered prion protein function.