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Related Experiment Video

Updated: Mar 30, 2026

In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice
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In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice

Published on: November 22, 2017

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Measuring In Vivo Mitophagy.

Nuo Sun1, Jeanho Yun2, Jie Liu1

  • 1Center for Molecular Medicine, National Heart Lung and Blood Institute, NIH, Bethesda, MD 20892, USA.

Molecular Cell
|November 10, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed a new mouse model to study mitophagy, the process of clearing damaged mitochondria. This tool allows for in vivo analysis of mitophagy across various conditions, aiding research into aging and related diseases.

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Area of Science:

  • Cell Biology
  • Mitochondrial Biology
  • Aging Research

Background:

  • Mitophagy, the selective degradation of mitochondria, is crucial for cellular health.
  • Dysfunctional mitophagy is implicated in aging and age-related diseases.
  • Existing methods for in vivo mitophagy analysis are limited.

Purpose of the Study:

  • To develop a novel transgenic mouse model for convenient in vivo mitophagy assessment.
  • To characterize basal mitophagy levels across different tissues and cells.
  • To investigate the impact of various physiological and pathological conditions on mitophagy.

Main Methods:

  • Generation of a transgenic mouse expressing mitochondrial-targeted Keima (mt-Keima).
  • Keima, a pH-sensitive fluorescent protein, allows for mitophagy tracking.
  • Analysis of mitophagy in primary cells and tissues under diverse perturbations.

Main Results:

  • Significant variations in basal mitophagy were observed across different tissues and cell types.
  • mt-Keima mice enabled assessment of mitophagy alterations due to diet, oxygen, genetic factors, and aging.
  • The model demonstrated the capacity to analyze mitophagy in the context of disease models, including cancer metastasis and neurodegenerative conditions.

Conclusions:

  • The mt-Keima mouse model provides a valuable tool for in vivo mitophagy research.
  • This model facilitates the study of mitophagy dynamics in response to a wide range of environmental and genetic factors.
  • The findings support the utility of this model for advancing our understanding of aging and age-related pathologies.