Evaluation of 4,5,6,7-tetrahalogeno-1H-isoindole-1,3(2H)-diones as inhibitors of human protein kinase CK2.
Protein kinase CK2 (Casein Kinase 2) is an extremely pleiotropic Ser/Thr kinase with high constitutive activity. The observation of CK2 deregulations in various pathological processes suggests that CK2 inhibitors may have a therapeutic value, particularly as anti-neoplastic and antiviral drugs. Here, we present the 4,5,6,7-tetrahalogeno-1H-isoindole-1,3(2H)-diones as a novel potent class of CK2 inhibitors. We identified this class of inhibitors by high-throughput docking of a compound collection in the ATP-binding site of human CK2. The most active compounds are 2-(4,5,6,7-tetraiodo-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanoic acid and 2-(4,5,6,7-tetraiodo-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)acetic acid with IC(50) values of 0.15 microM and 0.3 microM, respectively. These inhibitors are ATP-competitive and they only minimally inhibit the activities of protein kinases DYRK1a, MSK1, GSK3 and CDK5. Binding modes for the most active inhibitors are proposed.
Golub
A G
AG
Department of Combinatorial Chemistry, Institute of Molecular Biology and Genetics of National Academy of Sciences of Ukraine, Kyiv, Ukraine. andrew_golub@ukr.net
Yakovenko
O Ya
OY
Prykhod'ko
A O
AO
Lukashov
S S
SS
Bdzhola
V G
VG
Yarmoluk
S M
SM
D001665:Binding Sites; D047390:Casein Kinase II / Q000037:antagonists & inhibitors* / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D054833:Isoindoles / Q000737:chemistry / Q000378:metabolism* / Q000494:pharmacology*; D015394:Molecular Structure; D011485:Protein Binding; D047428:Protein Kinase Inhibitors / Q000737:chemistry / Q000378:metabolism* / Q000494:pharmacology*; D011994:Recombinant Proteins
D054833:Isoindoles; D047428:Protein Kinase Inhibitors; D011994:Recombinant Proteins; D047390:Casein Kinase II