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Ref Type Journal Article
PMID (20423992)
Authors Grimshaw KM, Hunter LJ, Yap TA, Heaton SP, Walton MI, Woodhead SJ, Fazal L, Reule M, Davies TG, Seavers LC, Lock V, Lyons JF, Thompson NT, Workman P, Garrett MD
Title AT7867 is a potent and oral inhibitor of AKT and p70 S6 kinase that induces pharmacodynamic changes and inhibits human tumor xenograft growth.
Journal Molecular cancer therapeutics
Vol 9
Issue 5
Date 2010 May
URL
Abstract Text The serine/threonine kinase AKT plays a pivotal role in signal transduction events involved in malignant transformation and chemoresistance and is an attractive target for the development of cancer therapeutics. Fragment-based lead discovery, combined with structure-based drug design, has recently identified AT7867 as a novel and potent inhibitor of both AKT and the downstream kinase p70 S6 kinase (p70S6K) and also of protein kinase A. This ATP-competitive small molecule potently inhibits both AKT and p70S6K activity at the cellular level, as measured by inhibition of GSK3beta and S6 ribosomal protein phosphorylation, and also causes growth inhibition in a range of human cancer cell lines as a single agent. Induction of apoptosis was detected by multiple methods in tumor cells following AT7867 treatment. Administration of AT7867 (90 mg/kg p.o. or 20 mg/kg i.p.) to athymic mice implanted with the PTEN-deficient U87MG human glioblastoma xenograft model caused inhibition of phosphorylation of downstream substrates of both AKT and p70S6K and induction of apoptosis, confirming the observations made in vitro. These doses of AT7867 also resulted in inhibition of human tumor growth in PTEN-deficient xenograft models. These data suggest that the novel strategy of AKT and p70S6K blockade may have therapeutic value and supports further evaluation of AT7867 as a single-agent anticancer strategy.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
AT-7867 AT-7867 2 0
Drug Name Trade Name Synonyms Drug Classes Drug Description
AT-7867 AT7867 Akt Inhibitor (Pan) 18 AKT Inhibitor (Pan) - ATP competitive 7 PKA Inhibitor 2 S6 Kinase Inhibitor 5 AT7867 is an ATP-competitive inhibitor of AKT1, AKT2, AKT3, PKA, and P70S6K, which inhibits cell proliferation and tumor growth (PMID: 20423992).
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
PIK3CA mutant Advanced Solid Tumor sensitive AT-7867 Preclinical Actionable In a preclinical study, AT-7867 inhibited proliferation in several human tumor cell lines harboring PIK3CA mutations in culture (PMID: 20423992). 20423992