4.5 Article

Prediction of seriniquinone-drug interactions by in vitro inhibition of human cytochrome P450 enzymes

期刊

TOXICOLOGY IN VITRO
卷 65, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tiv.2020.104820

关键词

Seriniquinone; Cytochrome P450; Natural product-drug interaction; Inhibition mechanisms; in vitro metabolism; Human liver microsomes

资金

  1. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2016/06366-5, 2014/50265-3, 2014/50945-4, 2018/07534-4, 2016/15680-5, 2015/171776]
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq - INCT-DATREM) [465571/2014-0]
  3. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil (CAPES) [001]

向作者/读者索取更多资源

Seriniquinone is a secondary metabolite isolated from a rare marine bacterium of the genus Serinicoccus. This natural quinone is highlighted for its selective cytotoxic activity toward melanoma cancer cells, in which rapid metastatic properties are still a challenge for clinical treatment of malignant melanoma. The progress of seriniquinone as a promising bioactive molecule for drug development requires the assessment of its clinical interaction potential with other drugs. This study aimed to investigate the in vitro inhibitory effects of seriniquinone on the main human CYP450 isoforms involved in drug metabolism. The results showed strong inhibition of CYP1A2, CYP2E1 and CYP3A, with IC50 values up to 1.4 mu M, and moderate inhibition of CYP2C19, with IC50 value > 15 mu M. Detailed experiments performed with human liver microsomes showed that the inhibition of CYP450 isoforms can be explained by competitive and non-competitive inhibition mechanisms. In addition, seriniquinone demonstrated to be an irreversible and time-dependent inhibitor of CYP1A2 and CYP3A. The low inhibition constants values obtained experimentally suggest that concomitant intake of seriniquinone with drug metabolized by these isoforms should be carefully monitored for adverse effects or therapeutic failure.

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