First Cdc7 kinase inhibitors: Pyrrolopyridinones as potent and orally active antitumor agents. 2. Lead discovery

  • Maria Menichincheri
  • , Alberto Bargiotti
  • , Jens Berthelsen
  • , Jay A. Bertrand
  • , Roberto Bossi
  • , Antonella Ciavolella
  • , Alessandra Cirla
  • , Cinzia Cristiani
  • , Valter Croci
  • , Roberto D'Alessio
  • , Marina Fasolini
  • , Francesco Fiorentini
  • , Barbara Forte
  • , Antonella Isacchi
  • , Katia Martina
  • , Antonio Molinari
  • , Alessia Montagnoli
  • , Paolo Orsini
  • , Fabrizio Orzi
  • , Enrico Pesenti
  • Daniele Pezzetta, Antonio Pillan, Italo Poggesi, Fulvia Roletto, Alessandra Scolaro, Marco Tato, Marcellino Tibolla, Barbara Valsasina, Mario Varasi, Daniele Volpi, Corrado Santocanale, Ermes Vanotti

Research output: Contribution to a Journal (Peer & Non Peer)Articlepeer-review

67 Citations (Scopus)

Abstract

Cdc7 kinase is a key regulator of the S-phase of the cell cycle, known to promote the activation of DNA replication origins in eukaryotic organisms. Cdc7 inhibition can cause tumor-cell death in a p53-independent manner, supporting the rationale for developing Cdc7 inhibitors for the treatment of cancer. In this paper, we conclude the structure-activity relationships study of the 2-heteroaryl-pyrrolopyridinone class of compounds that display potent inhibitory activity against Cdc7 kinase. Furthermore, we also describe the discovery of 89S,[(S)-2-(2-aminopyrimidin-4-yl)-7-(2-fluoro-ethyl)-1,5,6,7- tetrahydropyrrolo[3,2-c]pyridin- 4-one], as a potent ATP mimetic inhibitor of Cdc7. Compound 89S has a Ki value of 0.5 nM, inhibits cell proliferation of different tumor cell lines with an IC50 in the submicromolar range, and exhibits in vivo tumor growth inhibition of 68% in the A2780 xenograft model.

Original languageEnglish
Pages (from-to)293-307
Number of pages15
JournalJournal of Medicinal Chemistry
Volume52
Issue number2
DOIs
Publication statusPublished - 22 Jan 2009
Externally publishedYes

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