- Several human cyclin-dependent kinase inhibitors, structurally related to roscovitine, as new anti-malarial agents
-
In Africa, malaria kills one child each minute. It is also responsible for about one million deaths worldwide each year. Plasmodium falciparum, is the protozoan responsible for the most lethal form of the disease, with resistance developing against the av
- Houz, Sandrine,Hoang, Nha-Thu,Lozach, Olivier,Le Bras, Jacques,Meijer, Laurent,Galons, Herv,Demange, Luc
-
p. 15237 - 15257
(2015/01/09)
-
- Synthesis and evaluation of new potent inhibitors of CK1 and CDK5, two kinases involved in Alzheimer's disease
-
Cyclin-dependent kinase 5 (CDK5) and Casein kinase 1 (CK1) are both involved in the hyperphosphorylation of the Tau protein and in the amyloid-β production, the two major hallmarks of Alzheimer's disease. In the present paper, we describe the synthesis and biological evaluation of new series of 2,6,9-trisubstituted purines derived from DRF53, a dual specificity inhibitor of the kinase activity of CDK5 (IC50 = 80 nM) and CK1 (IC50 = 10 nM), and are able to prevent in a dose-dependent manner the CK1-dependent production of amyloid-β in a cell model. Several molecules (e.g., 6e, 6g, 7c) displayed potent kinase inhibitory activities against CDK5 and CK1 (IC50 values ranging from 20 to 50 nM) among which a selective inhibitor of CK1 has been identified (5a, IC50 = 60 nM). In addition, some compounds exhibit sub-micromolar activities against DYRK1A (dual specificity, tyrosine phosphorylation regulated kinase 1A), a kinase involved in Down syndrome and Alzheimer's disease (6g, IC50 = 510 nM).
- Demange, Luc,Lozach, Olivier,Ferandin, Yoan,Hoang, Nha Thu,Meijer, Laurent,Galons, Herve
-
p. 3247 - 3258
(2013/07/27)
-
- Roscovitine-derived, dual-specificity inhibitors of cyclin-dependent kinases and casein kinases 1
-
Cyclin-dependent kinases (CDKs) and casein kinases 1 (CK1) are involved in the two key molecular features of Alzheimer's disease, production of amyloid-β peptides (extracellular plaques) and hyper-phosphorylation of Tau (intracellular neurofibrillary tangles). A series of 2,6,9-trisubstituted purines, structurally related to the CDK inhibitor roscovitine, have been synthesized. They mainly differ by the substituent on the C-6 position. These compounds were screened for kinase inhibitory activities and antiproliferative effects. Several biaryl derivatives displayed potent inhibition of both CDKs and CK1. In particular, derivative 13a was a potent inhibitor of CDK1/cyclin B (IC50: 220 nM), CDK5/p25 (IC50: 80 nM), and CK1 (IC 50: 14 nM). Modeling of these molecules into the ATP-binding pocket of CK1δ provided a rationale for the increased selectivity toward this kinase. 13a was able to prevent the CK1-dependent production of amyloid-β in a cell model. CDK/CK1 dual-specificity inhibitors may have important applications in Alzheimer's disease and cancers.
- Oumata, Nassima,Bettayeb, Karima,Ferandin, Yoan,Demange, Luc,Lopez-Giral, Angela,Goddard, Marie-Lorène,Myrianthopoulos, Vassilios,Mikros, Emmanuel,Flajolet, Marc,Greengard, Paul,Meijer, Laurent,Galons, Hervé
-
experimental part
p. 5229 - 5242
(2009/07/01)
-