Resveratrol (RSV) is a small compound first identified as an activator of
sirtuin 1 (
SIRT1), a key factor in mediating the effects of
caloric restriction. Since then, RSV received great attention for its widespread beneficial effects on health and in connection to many diseases. RSV improves the metabolism and the mitochondrial function, and more recently it was shown to restore
fatty acid β-oxidation (FAO) capacities in patient fibroblasts harboring mutations with residual
enzyme activity. Many of RSV's beneficial effects are mediated by the transcriptional coactivator PGC-1α, a direct target of
SIRT1 and a master regulator of the mitochondrial
fatty acid oxidation. Despite numerous studies RSV's mechanism of action is still not completely elucidated. Our aim was to investigate the effects of RSV on gene regulation on a wide scale, possibly to detect novel genes whose up-regulation by RSV may be of interest with respect to disease treatment. We performed Next Generation Sequencing of
RNA on normal fibroblasts treated with RSV. To investigate whether the effects of RSV are mediated through
SIRT1 we expanded the analysis to include SIRT1-knockdown fibroblasts. We identified the
aspartoacylase (ASPA) gene, mutated in
Canavan disease, to be strongly up-regulated by RSV in several cell lines, including
Canavan disease fibroblasts. We further link RSV to the up-regulation of other genes involved in myelination including the glial specific
transcription factors POU3F1, POU3F2, and
myelin basic protein (MBP). We also observe a strong up-regulation by RSV of the
riboflavin transporter gene SLC52a1. Mutations in SLC52a1 cause transient
multiple acyl-CoA dehydrogenase deficiency (MADD). Our analysis of alternative splicing identified novel metabolically important genes affected by RSV, among which is particularly interesting the α subunit of the stimulatory
G protein (Gsα), which regulates the cellular levels of cAMP through
adenylyl cyclase. We conclude that in fibroblasts RSV stimulates the PGC-1α and p53 pathways, and up-regulates genes affecting the
glucose metabolism, mitochondrial β-oxidation, and mitochondrial biogenesis. We further confirm that RSV might be a relevant treatment in the correction of FAO deficiencies and we suggest that treatment in other metabolic disorders including
Canavan disease and MADD might be also beneficial.