Aspirin May Influence Cellular Energy Status

Keywords

ASA; Fatty acid oxidation; H O 2 2; Mitochondrial transcription factor A

Abstract

In our previous findings, we have demonstrated that aspirin/acetyl salicylic acid (ASA) might induce sirtuins via aryl hydrocarbon receptor (Ah receptor). Induction effects included an increase in cellular paraoxonase 1 (PON1) activity and apolipoprotein A1 (ApoA1) gene expression. As predicted, ASA and salicylic acid (SA) treatment resulted in generation of H2O2, which is known to be an inducer of mitochondrial gene Sirt4 and other downstream target genes of Sirt1. Our current mass spectroscopic studies further confirm the metabolism of the drugs ASA and SA. Our studies show that HepG2 cells readily converted ASA to SA, which was then metabolized to 2,3-DHBA. HepG2 cells transfected with aryl hydrocarbon receptor siRNA upon treatment with SA showed the absence of a DHBA peak as measured by LC-MS/MS. MS studies for Sirt1 action also showed a peak at 180.9 m /z for the deacetylated and chlorinated product formed from N-acetyl Lε-lysine. Thus an increase in Sirt4, Nrf2, Tfam, UCP1, eNOS, HO1 and STAT3 genes could profoundly affect mitochondrial function, cholesterol homeostasis, and fatty acid oxidation, suggesting that ASA could be beneficial beyond simply its ability to inhibit cyclooxygenase.

Publication Date

2-15-2015

Publication Title

European Journal of Pharmacology

Volume

749

Number of Pages

12-19

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ejphar.2014.12.020

Socpus ID

84921306348 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84921306348

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