Mitochondria-Centric Review of Polyphenol Bioactivity in Cancer Models.
Level 5 - mechanism / opinion, no new human data
Narrative review of preclinical mechanistic and animal research without clinical trial data.
PubMed 29084444 · doi:10.1089/ars.2017.7404
What was done
The authors synthesized literature from cell culture and animal models of cancer to evaluate the mechanistic basis of polyphenol bioactivity. The review specifically examined the physicochemical interactions of polyphenols with mitochondria, including effects on oxidative phosphorylation, glycolysis, mitochondrial membrane potential dissipation via protonophore mechanisms, and pro-oxidant and proapoptotic signaling cascades.
What was found
The abstract reports no quantitative or numerical data. It synthesizes findings showing that polyphenol anticancer effects in preclinical models are driven by pro-oxidant activity and protonophoric dissipation of mitochondrial membrane potential rather than classical antioxidant action. The authors argue that these physicochemical effects act selectively against tumorigenic cells and represent mechanisms against which cancer cells cannot develop mutational resistance.
Why it matters
Reconceptualizing polyphenols as physical mitochondrial uncouplers rather than simple antioxidants provides a mechanistic framework for testing them as adjuncts with conventional cancer therapies.
Limits
Findings are derived entirely from preclinical cell culture and animal models with no human clinical trial data reported. The abstract provides no quantitative effect sizes, sample sizes, or study counts, and does not evaluate clinical pharmacokinetics or achievable in vivo concentrations.
Cited by
- supports Polyphenols act as mitochondrial uncouplers.