3 years ago

Cytosolic Proteostasis Networks of the Mitochondrial Stress Response

Mitochondrial stress requires timely intervention to prevent mitochondrial and cellular dysfunction. Re-establishing the correct protein homeostasis is crucial for coping with mitochondrial stress and maintaining cellular homeostasis. The best-characterized adaptive pathways for mitochondrial stress involve a signal originating from stressed mitochondria that triggers a nuclear response. However, recent findings have shown that mitochondrial stress also affects a complex network of protein homeostasis pathways in the cytosol. We review how mitochondrial dysregulation affects cytosolic proteostasis by regulating the quantity and quality of protein synthesis, protein stability, and protein degradation, leading to an integrated regulation of cellular metabolism and proliferation. This mitochondria to cytosol network extends the current model of the mitochondrial stress response, with potential applications in the treatment of mitochondrial disease.

Publisher URL: www.sciencedirect.com/science

DOI: S0968000417300907

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