Identification of Bichalcones as Sirtuin Inhibitors by Virtual Screening and In Vitro Testing

Karaman B., Alhalabi Z., Swyter S., Mihigo S. O., Andrae-Marobela K., Jung M., ...More

MOLECULES, vol.23, no.2, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.3390/molecules23020416
  • Journal Name: MOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Istanbul University Affiliated: No


Sirtuins are nicotinamide adenine dinucleotide (NAD(+))-dependent class III histone deacetylases, which have been linked to the pathogenesis of numerous diseases, including HIV, metabolic disorders, neurodegeneration and cancer. Docking of the virtual pan-African natural products library (p-ANAPL), followed by in vitro testing, resulted in the identification of two inhibitors of sirtuin 1, 2 and 3 (sirt1-3). Two bichalcones, known as rhuschalcone IV (8) and an analogue of rhuschalcone I (9), previously isolated from the medicinal plant Rhus pyroides, were shown to be active in the in vitro assay. The rhuschalcone I analogue (9) showed the best activity against sirt1, with an IC50 value of 40.8 mu M. Based on the docking experiments, suggestions for improving the biological activities of the newly identified hit compounds have been provided.