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Related Experiment Videos

Autoradiography using storage phosphor technology.

R F Johnston1, S C Pickett, D L Barker

  • 1Molecular Dynamics, Sunnyvale, CA 94086.

Electrophoresis
|May 1, 1990
PubMed
Summary
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Photostimulable storage phosphor imaging plates offer superior sensitivity for detecting radioactive isotopes like phosphorus-32 (32P), carbon-14 (14C), and sulfur-35 (35S) in autoradiography. These advanced imaging plates provide a significant upgrade over traditional X-ray film for various gel and blot applications.

Area of Science:

  • Biotechnology
  • Radiochemistry
  • Molecular Imaging

Background:

  • Autoradiography is crucial for visualizing radiolabeled molecules in biological samples.
  • Traditional X-ray film has limitations in sensitivity and dynamic range for detecting low levels of radioactivity.
  • Photostimulable storage phosphor imaging plates offer a digital alternative for radiation detection.

Purpose of the Study:

  • To evaluate the application of photostimulable storage phosphor imaging plates for autoradiography.
  • To compare the sensitivity and resolution of imaging plates with X-ray film for detecting 32P, 14C, and 35S.
  • To assess the suitability of imaging plates for gel and blot applications.

Main Methods:

  • Autoradiography using photostimulable storage phosphor imaging plates.

Related Experiment Videos

  • Detection of samples labeled with phosphorus-32 (32P), carbon-14 (14C), and sulfur-35 (35S).
  • Comparison of imaging plate performance against traditional X-ray film.

    • Main Results:

    • Imaging plates detected 32P at 1 disintegration/mm2 and 14C/35S at 25 disintegrations/mm2.
    • Sensitivity was increased 15- to 250-fold for 32P and 20- to 100-fold for 14C/35S compared to X-ray film.
    • Resolution was approximately 0.3 mm, suitable for gel and blot analysis.

    Conclusions:

    • Photostimulable storage phosphor imaging plates provide enhanced sensitivity and comparable resolution for autoradiography.
    • These imaging plates are a viable and improved alternative to X-ray film for detecting low-level radioactivity.
    • The technology is well-suited for diverse autoradiographic applications in molecular biology and biochemistry.