Proposed Boolean model links age-related NAD decline to a reversible tumor-permissive metabolic state
The authors propose a Boolean network model in which progressive NAD decline lowers oxidative phosphorylation and raises glycolysis; hypoxia, extracellular ROS and mitogenic signaling produce a hyperproliferative, apoptosis-resistant state that RTK inhibition can redirect toward apoptosis. TCGA-BRCA expression data offered expression-level support. [1]
Automatic summary · not editorially reviewed
The key findings
The authors propose a Boolean biomolecular network model of mitochondrial aging integrated with metabolic, cell-cycle and apoptotic networks of 94 nodes and 370 edges. [1]
The model predicts that progressive NAD decline lowers OXPHOS propensity from 0.686 to 0.186 while raising glycolysis from 0.256 to 0.426. [1]
Age-resolved TCGA-BRCA analysis provided expression-level support, with declining OXPHOS-associated expression and concurrent OXPHOS/glycolysis activity in older Basal-like tumors. [1]
The source at a glance
- Study type / format
- Computational modeling study with TCGA-BRCA expression analysis (abstract)
- Population / context
- A proposed computational model of mitochondrial aging and cells, with an age-resolved TCGA-BRCA tumor expression analysis.
- Summary based on
- Study abstract
- Original publication
- August 21, 2026
Proposed 94-node model of mitochondrial aging
The authors describe age-associated mitochondrial decline as reducing NAD availability, impairing oxidative phosphorylation (OXPHOS) and increasing reactive oxygen species (ROS). They state that the regulatory logic linking mitochondrial aging to tumorigenic cell-fate transitions had not been modeled systematically. They therefore propose a Boolean biomolecular network model of mitochondrial aging, integrated with metabolic, cell-cycle and apoptotic networks comprising 94 nodes and 370 edges. This is a proposed computational framework, not a validated or approved product.
Supporting source [1]
Model predicts NAD decline shifts OXPHOS toward glycolysis
The model reproduces a quiescent baseline leaning toward OXPHOS. It predicts that progressive NAD decline lowers OXPHOS propensity from 0.686 to 0.186 while raising glycolysis from 0.256 to 0.426. Hypoxia and extracellular ROS are predicted to act together to favor glycolytic and hybrid oxidative-glycolytic (W/O) states. Together with elevated mitogenic signaling, these triggers are predicted to yield a hyperproliferative, glycolytic and apoptosis-resistant state. The authors describe this state as conditionally reversible: in the model, receptor tyrosine kinase (RTK) inhibition redirects the cell fate toward apoptosis and collapses the W/O state.
Supporting source [1]
Cancer-driver and TCGA-BRCA expression-level support
Cancer-driver analysis indicates that, without extracellular pyruvate, loss of VHL and activation of RAS, PI3K or AKT preferentially stabilize glycolytic and hybrid states. An age-resolved analysis of TCGA-BRCA provided expression-level support for the predicted remodeling, with declining OXPHOS-associated expression and concurrent OXPHOS/glycolysis activity in older Basal-like tumors. The authors conclude that mitochondrial aging is a priming condition whose tumor-permissive metabolic output is gated by microenvironmental and nutrient inputs. These are model predictions and expression-level associations, not demonstrated causes of cancer or evidence of human lifespan benefit.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Findings are model predictions plus expression-level associations from TCGA-BRCA, not demonstrated causes of cancer or human lifespan benefits. The proposed framework is not a validated or approved product.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Amina B, Nasir Z, Butt RN, Chanan-Khan AA, Chaudhary SU. · europepmc.org · August 21, 2026