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Publication Detail
Quantitation of autophagy by luciferase release assay.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Evaluation Studies
  • Authors:
    Ketteler R, Seed B
  • Publication date:
  • Pagination:
    801, 806
  • Journal:
  • Volume:
  • Issue:
  • Country:
    United States
  • PII:
  • Language:
  • Keywords:
    Animals, Anti-Bacterial Agents, Autophagy, Biological Assay, Cell Line, Copepoda, Cysteine Endopeptidases, Enzyme Activation, Humans, Luciferases, Mice, Sirolimus
Autophagy is a cellular process that has been defined and analyzed almost entirely by qualitative measures. In no small part, this is attributable to the absence of robust quantitative assays that can easily and reliably permit the progress of key steps in autophagy to be assessed. We have recently developed a cell-based assay that specifically measures proteolytic cleavage of a tripartite sensor protein by the autophagy protease ATG4B. Activation of ATG4B results in release of Gaussia luciferase from cells that can be non-invasively harvested from cellular supernatants. Here, we compare this technique to existing methods and propose that this type of assay will be suitable for genome-wide functional screens and in vivo analysis of autophagy.
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