The paper shows that a specific enzyme (PANK2) helps make a molecule called CoA, which is needed for burning fat, especially when fatty acids are present. It doesn’t test or give advice about using the peptide palmitoyl‑dipeptide‑6, so there’s no direct action you can take from it.

Humans have 3 different PANK enzymes (PANK1-3) that catalyze the first step in the <i>de novo</i> synthesis of Coenzyme A (CoA). All PANKs are feedback inhibited by acyl-CoAs but only PANK2 can overcome this inhibition by binding palmitoyl-carnitine. Previous studies, conducted under glucose-replete conditions, have failed to detect a PANK2-mediated contribution to CoA synthesis. We found that exposure to BSA-conjugated palmitate (PAL-BSA) led to activation of fatty acid oxidation (FAO) and the accumulation of both palmitoyl-carnitine and palmitoyl-CoA in HEK293T cells, suggesting that PANK2 is active under these conditions. Isotope tracing experiments with ¹³C¹⁵N-pantothenate showed that PANK2 uniquely sustains <i>de novo</i> CoA synthesis and high production of Acetyl-CoA in the presence of long-chain fatty acids, indicating that FAO is limited by CoA availability in these conditions. Consistent with this mechanism, fibroblasts from PKAN patients exhibited impaired oxidation of palmitoyl-carnitine, confirming the functional relevance of our results in a disease context.