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Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes
Detection of Mitophagy in <em>Caenorhabditis elegans</em> and Mammalian Cells Using Organelle-Specific Dyes
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Biology
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Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes

Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes

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11:59 min

May 19, 2023

DOI:

11:59 min
May 19, 2023

27 Views
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Transcript

Automatically generated

Degradation of damaged mitochondria by mitophagy is essential for the function of the mitochondrial network. Unfortunately, this process declines with age. We develop and use drugs that activate mitophagy, thereby promoting healthy aging to understand the function of mitophagy in aging and age-related diseases, including Alzheimer’s.

One of the biggest challenges is to measure the mitophagy process without affecting it. Recent studies have shown that GFP expression in the mitochondria of muscle cells induces stress that is MT UPR. Therefore, using dyes in non-transgenic animals or cells is essential and complements genetic technologies.

Our protocol has three main advantages. First, there is no need to generate transgenic animals or cells expressing mitophagy biosensors. Second, no need for expensive infrastructure and expertise such as in case of electron microscopy.

And third, the organelle dye cocktail is commercially available and the protocol is simple and fast. The new mitophagy-activating compound VL-850 induces robust mitophagy, and in this way protects from oxidative stress and promote lifespan. Now the big question is to determine the underlying mechanism of action.

We explored the mechanism at multiple levels, from the cellular to the organismal using C.elegans and mammalian cells.

Summary

Automatically generated

Exploring mitophagy through electron microscopy, genetic sensors, and immunofluorescence requires costly equipment, skilled personnel, and a significant time investment. Here, we demonstrate the efficacy of a commercial fluorescence dye kit in quantifying the mitophagy process in both Caenorhabditis elegans and a liver cancer cell line.

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