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Metabolic Kinases as Regulators of Inter-Organelle Communication in Aging and Age-Related Diseases
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DOI：10.1111/acel.70624.png)
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Abstract
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Cellular aging is accompanied by progressive alterations in metabolic homeostasis, stress adaptation, and organelle function. Increasing evidence suggests that functional coordination among membrane-bound organelles, including mitochondria, the endoplasmic reticulum (ER), lysosomes, peroxisomes, and the Golgi apparatus, contributes to cellular homeostasis during aging. However, the mechanisms linking kinase signaling to specific inter-organelle contact sites or communication pathways remain incompletely defined. In this review, we discuss current evidence linking major metabolic and stress-responsive kinases, including AMPK, pyruvate dehydrogenase kinases (PDKs), mTOR, AKT, and PERK, to organelle coordination in aging and age-related diseases. These kinases regulate mitochondrial dynamics, metabolic flux, calcium and lipid handling, autophagy, lysosomal function, proteostasis, and vesicular trafficking. In some contexts, kinase signaling intersects with defined organelle interfaces, such as mitochondria-associated ER membranes, whereas in many cases the effects on inter-organelle communication are indirect or inferred from broader changes in organelle function. We further discuss how kinase dysregulation may contribute to age-associated defects in mitochondria–ER, mitochondria–lysosome, mitochondria–peroxisome, and ER–Golgi coordination in neurodegeneration, cardiometabolic disease, cellular senescence, and inflammaging. By distinguishing direct contact-site regulation from indirect functional coordination, this review highlights kinase-regulated organelle communication as an emerging, but still incompletely resolved, framework for understanding cellular decline during aging.
Keywords:
age-related diseases
aging
inter-organelle communication
metabolic kinases
mitochondrial quality control
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