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Autophagy is a lysosome-dependent intracellular degradation system required for various physiological processes and can be dysregulated in human disease. To understand its biological significance and underlying mechanisms, measuring autophagic activity (i.e., autophagic flux) is critical. However, navigating which assays to use, and when, is complicated and at times the results are often interpreted inappropriately. This review will summarize both advantages and disadvantages of currently available methods to monitor autophagy. In addition, we discuss how these assays should be used in high-throughput screens to identify autophagy-modulating drugs and genes and the general features needed for biomarkers to assess autophagy in humans.
Mizushima et al. (Fri,) studied this question.