Caloric restriction mimetics: natural/physiological pharmacological autophagy inducers.
Level 5 - mechanism / opinion, no new human data
Editorial and theoretical commentary based on preclinical mechanisms without primary clinical data
PubMed 25484097 · doi:10.4161/auto.36413
What was done
This editorial synthesizes biochemical pathways linking nutrient starvation to autophagy, focusing on intracellular acetyl-CoA depletion and protein deacetylation. The authors propose a three-part mechanistic classification framework for pharmacological caloric restriction mimetics using natural compounds based on in vitro and rodent studies.
What was found
The abstract reports no quantitative results or empirical trial data. The authors categorize candidate compounds into acetyl-CoA depleting agents (hydroxycitrate), acetyltransferase inhibitors (anacardic acid, curcumin, epigallocatechin-3-gallate, garcinol, spermidine), and deacetylase activators (nicotinamide, resveratrol), reporting that these agents induce autophagy and confer protection against ischemia and age-associated conditions in preclinical models.
Why it matters
It outlines a biochemical framework linking acetyl-CoA modulation and protein deacetylation to autophagy induction, framing potential pharmacological strategies to mimic the benefits of caloric restriction.
Limits
This is an editorial commentary containing no original experimental data, quantitative metrics, or human clinical studies. All discussed mechanisms and therapeutic potentials are derived from preclinical cell-culture and rodent models.
Cited by
- supports During complete caloric starvation, cytoplasmic protein deacetylation occurs across all major cell types throughout the body, except in the brain which is buffered against this effect.
- supports ATP citrate lyase is the primary enzyme generating the cytosolic acetyl-CoA pool, and hydroxycitrate inhibits it, causing acetyl-CoA depletion, deacetylation, and autophagy.
- supports Resveratrol and spermidine function as fasting-mimicking compounds that activate cellular signaling pathways similar to fasting.