Mitochondrial Dysfunction in Renal Aging: A Vicious Cycle Driving Kidney Disease Progression

Area of Science:

• Gerontology and Nephrology
• Mitochondrial Biology
• Cellular Senescence

Background:

• Aging populations face increased age-related diseases, particularly kidney decline.
• Mitochondrial dysfunction is a key driver of kidney aging and disease.
• Mitochondria are central to cellular metabolism, redox balance, and cell fate.

Purpose of the Study:

• To systematically summarize the associations and causal mechanisms of disrupted mitochondrial homeostasis in renal aging.
• To examine the role of mitochondria-associated senescence in acute kidney injury and chronic kidney disease.
• To highlight potential interventions targeting mitochondrial dysfunction and cellular senescence.

Main Methods:

• Literature review and synthesis of current research on mitochondrial dysfunction and kidney aging.
• Analysis of factors contributing to a vicious cycle promoting renal aging.
• Examination of mitochondria-associated senescence in kidney injury models.

Main Results:

• Dysregulated redox status, metabolic reprogramming, mtDNA abnormalities, impaired quality control, and calcium overload promote renal aging.
• Mitochondrial dysfunction and cellular senescence form a self-perpetuating cycle exacerbating kidney injury.
• Mitochondria-associated senescence plays a role in both acute and chronic kidney diseases.

Conclusions:

• Targeting mitochondrial dysfunction and senescence holds promise for treating age-related kidney diseases.
• Current interventions for mitochondrial aging in kidneys are underdeveloped and require clinical trials.
• Future research should focus on developing precise drugs for mitochondrial senescence to prevent kidney disease progression.