The Study
Cellular acidosis triggers human MondoA transcriptional activity by driving mitochondrial ATP production
This study is like watching a tiny robot inside a test tube react to sour juice—it shows how one part of the robot (MondoA) turns on a specific light (TXNIP) when the juice makes the robot’s battery (mtATP) stronger. But it doesn’t prove this happens the same way in your body or can cure cancer.
Analysis score
Maximum 58 for a case-control study.
Where the score came from
When cells get too acidic, they turn on a special system that tells them to stop taking in so much sugar. This system uses energy from mitochondria to make a sugar molecule that signals a master switch (MondoA) to turn on two genes that block sugar intake.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 540 / 100
Quality score
Researchers compare people who have a condition (cases) with similar people who do not (controls), looking back in time for differences in exposure. Useful but more prone to bias.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this helps explain how cancer cells and other stressed cells avoid overloading on sugar when energy is high, potentially protecting against uncontrolled growth.
- 2Acidic conditions cause mitochondrial ATP to rise 20%, G6P to triple, and MondoA to strongly activate TXNIP and ARRDC4 genes — which cut glucose uptake by up to 7.9-fold.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
eLife
Year
2019
Authors
Blake Wilde, Zhizhou Ye, Tian-Yeh Lim, D. Ayer
Related Content
Claims (6)
At a pH of 6.5, human cells produce more ATP in their mitochondria, which increases glucose-6-phosphate synthesis through mitochondria-bound hexokinase. This triggers MondoA to move into the nucleus and activate TXNIP and ARRDC4 genes, which reduce glucose uptake and restore metabolic balance.
In human cells grown in the lab, low pH conditions cause the MondoA protein to bind more strongly to the regulatory regions of the TXNIP and ARRDC4 genes, leading to increased production of these genes' RNA, while other genes regulated by MondoA show little change.
In human cells under acidic conditions, the protein hexokinase 2 must remain attached to mitochondria and active to enable the production of glucose-6-phosphate and activation of MondoA, which leads to increased TXNIP levels.
In human cells grown in the lab, lower pH increases the electrical charge across mitochondrial membranes and boosts ATP production without affecting the mTORC1 signaling pathway, as shown by stable S6 protein phosphorylation.
In human cells under acidic conditions, the production of ATP by mitochondria is necessary to trigger the activation of MondoA and the increased expression of TXNIP and ARRDC4 genes; blocking ATP production prevents this response.
Metabolic acidosis disrupts the proton gradient across mitochondrial membranes, which decreases the efficiency of ATP production.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.