Methods for assessing mitochondrial quality control mechanisms and cellular consequences in cell culture

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Mitochondrial quality is crucial for cellular health and is maintained by autophagy, the process of degrading damaged mitochondria.
• Impaired autophagy leads to mitochondrial dysfunction, bioenergetic deficits, and metabolic stress, impacting overall cellular function.
• Decreased mitochondrial quality is implicated in numerous physiological and pathological conditions.

Purpose of the Study:

• To develop and present an integrated workflow for assessing various parameters of mitochondrial quality.
• To provide a practical framework for evaluating mitochondrial health in research settings.
• To offer a reproducible and adaptable protocol for diverse studies.

Main Methods:

• The workflow integrates assessments of mitochondrial morphology, function, and damage (mtDNA and protein).
• It also includes analysis of cellular metabolism and autophagy regulation.
• The protocol was validated using cell cultures.

Main Results:

• The described workflow provides a comprehensive assessment of mitochondrial quality.
• The protocol is highly reproducible and suitable for studies with limited cell numbers.
• It establishes a framework for investigating the role of mitochondrial quality in health and disease.

Conclusions:

• This integrated workflow offers a practical approach to evaluating mitochondrial quality.
• The protocol's reproducibility and adaptability make it valuable for a wide range of research.
• It will aid researchers in understanding the contribution of compromised mitochondrial quality to various biological phenomena.