GDC-0575 (ARRY-575, RG7741) is a potent and selective oral inhibitor of cell cycle checkpoint kinase 1 (Chk1) with an IC50 of 1.2 nM. GDC-0575 abrogates DNA damage-induced S and G2–M checkpoints, exacerbates DNA double-strand breaks and induces apoptosis in STS cells. GDC-0575 has a synergistic or additive effect together with gemcitabine.
In vivo, GDC-0575 is active at 25 mg/kg as a single agent, but the efficacy is improved at the higher dose. GDC-0575 effectively blocks tumor growth in the D20 and C002 xenografts, and the effect is maintained for at least 10 days after the final dose is administered.
|Cell lines||AML cell lines|
|Preparation method||AML cell lines are seeded at 1×104 cells/well in 96-well plates in triplicate, and subjected to different treatment conditions. After 24 h of incubation with GDC-0575, cell proliferation is measured with the XTT Cell Proliferation Kit II.|
|Incubation time||24 h|
|Animal models||Female nude BALB/c mice|
|Formulation||0.5% w/v methylcellulose and 0.2%v/v Tween 80|
|Dosages||25 mg/kg, 50 mg/kg|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
|Solubility||DMSO 80 mg/mL|
|Related Checkpoint Products|
WAY-239320 is a Chk1 inhibitor
Prexasertib dimesylate (LY2606368 dimesylate) is a selective, ATP-competitive second-generation checkpoint kinase 1 (CHK1) inhibitor with a Ki of 0.9 nM and an IC50 of <1 nM.
Prexasertib (LY2606368) is a selective, ATP-competitive second-generation checkpoint kinase 1 (CHK1) inhibitor with a Ki of 0.9 nM and an IC50 of <1 nM.
GDC-0575 dihydrochloride (ARRY-575 dihydrochloride) is an orally bioavailable CHK1 inhibitor, with an IC50 of 1.2 nM, and has antitumor activity.
CCT244747 is a potent, orally bioavailable and highly selective CHK1 inhibitor, with an IC50 of 7.7 nM; CCT244747 also abrogates G2 checkpoint with an IC50 of 29 nM.
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