KU-60019

Cas No.:	925701-46-8
Chemical Name:	KU-60019
Synonyms:	KU 60019;KU-60019;ku60019;IAN358A69K;2-[(2S,6R)-2,6-dimethylmorpholin-4-yl]-N-[5-(6-morpholin-4-yl-4-oxopyran-2-yl)-9H-thioxanthen-2-yl]acetamide;C30H33N3O5S;2-[(2R,6S)-2,6-Dimethylmorpholin-4-yl]-N-{5-[6-(morpholin-4-yl)-4-oxo-4H-pyran-2-yl]-9H-thioxanthen-2-yl}acetamide;2-((2S,6R)-2,6-dimethylmorpholino)-N-(5-(6-morpholino-4-oxo-4H-pyran-2-yl)-9H-thioxanthen-2-yl)acetamide;MLS006011020;GTPL8041;A
SMILES:	O=C(NC1=CC(CC2=C(C(C3=CC(C=C(N4CCOCC4)O3)=O)=CC=C2)S5)=C5C=C1)CN6C[C@H](C)O[C@H](C)C6
Formula:	C30N3O5SH33
M.Wt:	547.6651
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	KU-60019 is an improved ATM kinase-specific inhibitor with IC50 of 6.3 nM.
In Vivo:	Despite PTEN-deficient control tumors reaching a 4-fold increase in size before PTEN wild-type controls, KU-60019-treated PTEN-deficient tumors display a statistically significant slowing in growth. This growth inhibition is especially evident at the start of the experiment (days 5-12) just after KU-60019 is administered (days 1-5)[2].
In Vitro:	KU-60019 is an improved analogue of KU-55933. KU-55933 has an IC50 of 13 nM and Ki of 2.2 nM in vitro and is highly specific for the ATM kinase using a panel of 60 protein kinases. KU-60019 is an improved inhibitor of the ATM kinase with an IC50 of 6.3 nM, approximately half that of KU-55933. The IC50 values for DNA-PKcs and ATR are 1.7 and >10 μM, respectively, almost 270-and 1600-fold higher than for ATM. KU-60019 is 10-fold more effective than KU-55933 at blocking radiation-induced phosphorylation of key ATM targets in human glioma cells. In human U87 glioma cells, KU-55933 completely inhibits phosphorylation of p53 (S15) at 10 μM but not at 3 μM, whereas γ-H2AX levels are only partly reduced with 10 μM 1 h after irradiation. By comparison, 3 μM KU-60019 completely inhibits p53 phosphorylation and partial inhibits at 1 μM[1].