Mitochondrial-Centered Biological Networks in Metabolic Disease: Toward Precision Mitochondrial Medicine

Obesity and type 2 diabetes (T2D) are multifactorial metabolic disorders characterized by progressive dysfunction of multiple organs and biological systems. Although mitochondrial dysfunction is a hallmark of disease progression, the mechanisms linking metabolic stress to coordinated tissue dysfunction remain incompletely understood. Comparative proteomic studies have consistently identified coordinated remodeling of oxidative phosphorylation, fatty acid oxidation, tricarboxylic acid cycle activity, redox regulation, mitochondrial proteostasis, and adaptive signaling across metabolically affected organs, revealing conserved organizational principles underlying mitochondrial adaptation. However, these findings have largely been interpreted within reductionist, pathway-centered frameworks. Here, we integrate evidence from comparative proteomics, mitochondrial biology, bioenergetics, redox biology, signaling, and systems biology to propose the concept of mitochondrial-centered biological networks (MCBNs), in which mitochondria function as dynamic regulatory hubs coordinating interconnected processes that collectively determine metabolic adaptation and tissue resilience. Building on this framework, we introduce the Mitochondrial Homeostasis Hypothesis, which proposes that preservation or restoration of mitochondrial homeostasis depends on coordinated regulation of MCBNs and constitutes a fundamental systems-level mechanism underlying resistance to obesity, T2D, and hypercaloric diet-induced metabolic dysfunction. Curcumin represents a well-studied network-modulating intervention that coordinately influences mitochondrial bioenergetics, metabolic flexibility, redox homeostasis, proteostasis, inflammatory signaling, and adaptive stress responses, supporting the concept that mitochondrial homeostasis is preserved through coordinated network regulation rather than isolated modulation of individual molecular pathways. Finally, we discuss how emerging technologies, including functional proteomics, redox proteomics, spatial and single-cell proteomics, acetylomics, integrated multi-omics, and artificial intelligence-assisted network analysis, provide unprecedented opportunities to quantitatively characterize MCBNs, validate the proposed hypothesis, identify network-based biomarkers, and accelerate the development of network-guided precision mitochondrial medicine.