Mitohormesiomics

Mitohormesiomics

Definition

Mitohormesiomics is the systematic, omics-scale study of mitochondrial hormetic phenomena — the biphasic, concentration-dependent adaptive responses originating from or mediated by mitochondria — and their comprehensive molecular consequences across the genome, transcriptome, proteome, metabolome, and epigenome of cells, tissues, and organisms. It holds as its central premise that mitochondria are not merely passive energy-producing organelles but active, concentration-sensitive hormetic signaling hubs whose stress-response outputs — calibrated by the intensity and duration of mitochondrial perturbation — determine cell fate, organismal resilience, and the trajectory of biological aging. Mitohormesiomics maps the full molecular architecture of mitochondria-initiated hormetic signaling networks at omics resolution, integrating mitoproteomic, mitometabolomic, mitogenomic, and retrograde signaling data to construct a systems-level understanding of how sub-threshold mitochondrial stress drives beneficial adaptive reprogramming across the entire organism.

Core Principle

The foundational postulate of Mitohormesiomics is: mitochondrial stress, calibrated within the hormetic zone, is a universal driver of adaptive resilience, metabolic optimization, and longevity. Mitochondria occupy a unique and privileged position within the cellular hormetic landscape: they are simultaneously the primary sensors of bioenergetic and oxidative stress, the principal generators of hormetic signals (reactive oxygen species, NAD⁺/NADH ratio, mitochondrial membrane potential, mitokines, and metabolic intermediates), and the executors of the adaptive responses those signals trigger. The concentration and duration of mitochondrial stress thus constitutes a master regulatory axis — a mitochondrial hormetic axis — whose quantitative parameters determine whether a cell undergoes adaptive strengthening, homeostatic maintenance, accelerated senescence, or apoptotic death.

Scope

Mitohormesiomics encompasses:

• Mitochondrial ROS hormesiomics: omics-scale characterization of the biphasic, concentration-dependent effects of mitochondrially generated reactive oxygen species (mtROS) — beneficial at low concentrations as redox signaling molecules activating NRF2, AMPK, sirtuins, and autophagy; detrimental at high concentrations as drivers of oxidative damage, mtDNA mutation, and senescence.
• Mitokine concentratiomics: systematic profiling of the concentration-dependent signaling effects of mitochondria-derived peptides and secreted factors — including FGF21, GDF15, humanin, MOTS-c, and other mitokines — across tissues and life stages, with particular focus on their hormetic dose-response landscapes and age-associated dysregulation.
• NAD⁺ hormesiomics: omics-resolution mapping of the biphasic regulatory effects of NAD⁺ concentration on sirtuin activity, mitochondrial biogenesis, DNA repair, and epigenetic remodeling — and the systematic decline of NAD⁺ levels across the aging Dosagiome.
• Mitophagy hormesiomics: characterization of the concentration-dependent, biphasic regulation of selective mitochondrial autophagy (mitophagy) as a hormetic quality-control mechanism, whose optimal induction removes damaged mitochondria and whose suppression or overactivation precipitates pathological outcomes.
• UPRmt hormesiomics: omics-scale analysis of the mitochondrial unfolded protein response (UPRmt) as a hormetic adaptive program — activated by sub-toxic mitochondrial proteotoxic stress and coordinating nuclear gene expression reprogramming, metabolic remodeling, and lifespan extension across model organisms.
• Retrograde signaling hormesiomics: systematic mapping of mitochondria-to-nucleus retrograde signaling networks activated by hormetic mitochondrial stress, including the characterization of transcription factors, chromatin remodelers, and epigenetic effectors that translate mitochondrial stress signals into adaptive nuclear gene expression programs.
• Exercise mitohormesiomics: omics-resolution characterization of exercise-induced mitochondrial hormesis — the adaptive beneficial reprogramming triggered by the transient mitochondrial stress of physical exertion — including the identification of the precise mitochondrial stress thresholds, signal mediators, and downstream transcriptional programs that translate exercise into systemic health and longevity benefits.
• Aging mitohormesiomics: systematic investigation of how the aging Dosagiome erodes mitochondrial hormetic competence — blunting the sensitivity, amplitude, and adaptive fidelity of mitochondrial stress responses — and how this erosion contributes to the hallmarks of aging including mitochondrial dysfunction, chronic inflammation, epigenetic drift, and loss of proteostasis.
• Pharmacological mitohormesiomics: omics-resolution mapping of the concentration-dependent mitohormetic effects of longevity-associated compounds — including rapamycin, metformin, urolithin A, spermidine, NAD⁺ precursors (NMN, NR), and mitochondria-targeted antioxidants — providing a quantitative foundation for precision mitohormetic intervention strategies in geroscience.

Mitohormesiomics addresses a critical and underexplored dimension of aging biology and longevity science: the systematic, quantitative characterization of mitochondria as hormetic signaling centers whose concentration-calibrated stress outputs orchestrate organism-wide adaptive responses. The field resolves a central paradox of mitochondrial biology — that mitochondria are simultaneously the primary source of cellular damage (through mtROS, mtDNA mutations, and SASP-driving mitochondrial dysfunction) and the primary drivers of adaptive resilience and longevity (through hormetic ROS signaling, UPRmt activation, mitokine secretion, and NAD⁺-dependent sirtuin activation) — by situating both effects within a unified, concentration-resolved hormetic framework. By establishing the precise mitochondrial stress thresholds, signal mediators, and omics-layer consequences that distinguish beneficial mitohormesis from pathological mitochondrial dysfunction, Mitohormesiomics provides the mechanistic and quantitative foundation for the rational design of mitohormetic interventions targeting aging, metabolic disease, neurodegeneration, and age-related functional decline.

Relationship to Hormesiomics, Dosagiomics, and Concentratiomics

Mitohormesiomics is a specialized subdiscipline of Hormesiomics, restricted to hormetic phenomena originating from or mediated by mitochondria. It is simultaneously embedded within the broader frameworks of Dosagiomics and Concentratiomics, which supply its quantitative, concentration-centered theoretical foundations. The mitochondrial hormetic dose-response landscape constitutes a critically important subset of the Dosagiome — particularly the aging Dosagiome — whose progressive reconfiguration with age represents one of the most consequential shifts in the quantitative regulatory architecture of the aging organism.

Coined by

Jong Bhak, KOGIC / AgingLab, UNIST, Republic of Korea (2025)

See also

Hormesiomics · Dosagiomics · Concentratiomics · Dosagiome · Hormesis · Mitohormesis · GeroIndex · Gerostasis · NAD⁺ · Mitophagy · UPRmt · Sirtuins · AMPK · mTOR · NRF2 · Mitokines · Retrograde Signaling · Aging Hallmarks · Systems Biology · Precision Medicine

The nomenclature framework now extends into a hierarchical structure:

Would you like to continue expanding the framework — for example, with Neurohormesiomics, Epigenohormesiomics, or Immunohormesiomics — as further specialized subdisciplines within the same hierarchical family?