Reference Detail

Ref Type Journal Article
PMID (23748344)
Authors Khan I, Huang Z, Wen Q, Stankiewicz MJ, Gilles L, Goldenson B, Schultz R, Diebold L, Gurbuxani S, Finke CM, Lasho TL, Koppikar P, Pardanani A, Stein B, Altman JK, Levine RL, Tefferi A, Crispino JD
Title AKT is a therapeutic target in myeloproliferative neoplasms.
Journal Leukemia
Vol 27
Issue 9
Date 2013 Sep
URL
Abstract Text The majority of patients with BCR-ABL1-negative myeloproliferative neoplasms (MPN) harbor mutations in JAK2 or MPL, which lead to constitutive activation of the JAK/STAT, PI3K and ERK signaling pathways. JAK inhibitors by themselves are inadequate in producing selective clonal suppression in MPN and are associated with hematopoietic toxicities. MK-2206 is a potent allosteric AKT inhibitor that was well tolerated, including no evidence of myelosuppression, in a phase I study of solid tumors. Herein, we show that inhibition of PI3K/AKT signaling by MK-2206 affected the growth of both JAK2V617F- or MPLW515L-expressing cells via reduced phosphorylation of AKT and inhibition of its downstream signaling molecules. Moreover, we demonstrate that MK-2206 synergizes with ruxolitinib in suppressing the growth of JAK2V617F-mutant SET2 cells. Importantly, MK-2206 suppressed colony formation from hematopoietic progenitor cells in patients with primary myelofibrosis and alleviated hepatosplenomegaly and reduced megakaryocyte burden in the bone marrows, livers and spleens of mice with MPLW515L-induced MPN. Together, these findings establish AKT as a rational therapeutic target in the MPNs.

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Molecular Profile Treatment Approach
MPL W515L MK2206
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Therapy Description
Drug Name Trade Name Synonyms Drug Classes Drug Description
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
MPL W515L myelofibrosis sensitive MK2206 Preclinical Actionable In a preclinical study, MK2206 treatment reduced disease burden in MPL W515L transduced mouse models of myelofibrosis (PMID: 23748344). 23748344