Identification and characterization of deschloro-chlorothricin obtained from a large natural product library targeting aurora A kinase in multiple myeloma

ÖZENVER N., Abdelfatah S., Klinger A., Fleischer E., Efferth T.

INVESTIGATIONAL NEW DRUGS, vol.39, no.2, pp.348-361, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.1007/s10637-020-01012-2
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, ABI/INFORM, Agricultural & Environmental Science Database, BIOSIS, Biotechnology Research Abstracts, CINAHL, EMBASE, MEDLINE
  • Page Numbers: pp.348-361
  • Keywords: Cancer, Multiple myeloma, Natural product, precision medicine, Targeted chemotherapy, CELL-CYCLE ARREST, A KINASE, BREAST-CANCER, SELECTIVE INHIBITOR, DOWN-REGULATION, D-TACC, CYTOTOXICITY, GROWTH, TUMOR, CHEMOSENSITIVITY
  • Hacettepe University Affiliated: Yes


Multiple myeloma (MM) is a devastating disease with low survival rates worldwide. The mean lifetime of patients may be extendable with new drug alternatives. Aurora A kinase (AURKA) is crucial in oncogenesis, because its overexpression or amplification may incline the development of various types of cancer, including MM. Therefore, inhibitors of AURKA are innovative and promising targets. Natural compounds always represented a valuable resource for anticancer drug development. In the present study, based on virtual drug screening of more than 48,000 natural compounds, the antibiotic deschloro-chlorotricin (DCCT) has been identified to bind to AURKA with even higher binding affinity (free bindung energy: -12.25 kcal/mol) than the known AURKA inhibitor, alisertib (free binding energy: -11.25 kcal/mol). The in silico studies have been verified in vitro by using microscale thermophoresis. DCCT inhibited MM cell lines (KMS-11, L-363, RPMI-8226, MOLP-8, OPM-2, NCI-H929) with IC(50)values in a range from 0.01 to 0.12 mu M. Furthermore, DCCT downregulated AURKA protein expression, induced G2/M cell cycle arrest and disturbed the cellular microtubule network as determined by Western blotting, flow cytometry, and fluorescence microscopy. Thus, DCCT may be a promising lead structure for further derivatization and the development of specific AURKA inhibitors in MM therapy.