Genetic resistance to JAK2 enzymatic inhibitors is overcome by HSP90 inhibition.
Genetic resistance to JAK2 enzymatic inhibitors is overcome by HSP90 inhibition.
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DOI:
10.1084/jem.20111694
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发表时间:
2012-02-13
期刊:
影响因子:
--
通讯作者:
Weinstock DM
中科院分区:
文献类型:
--
作者:
Weigert O;Lane AA;Bird L;Kopp N;Chapuy B;van Bodegom D;Toms AV;Marubayashi S;Christie AL;McKeown M;Paranal RM;Bradner JE;Yoda A;Gaul C;Vangrevelinghe E;Romanet V;Murakami M;Tiedt R;Ebel N;Evrot E;De Pover A;Régnier CH;Erdmann D;Hofmann F;Eck MJ;Sallan SE;Levine RL;Kung AL;Baffert F;Radimerski T;Weinstock DM
Hsp90 inhibition in B cell acute lymphoblastic leukemia overcomes resistance to JAK2 inhibitors. Enzymatic inhibitors of Janus kinase 2 (JAK2) are in clinical development for the treatment of myeloproliferative neoplasms (MPNs), B cell acute lymphoblastic leukemia (B-ALL) with rearrangements of the cytokine receptor subunit cytokine receptor–like factor 2 (CRLF2), and other tumors with constitutive JAK2 signaling. In this study, we identify G935R, Y931C, and E864K mutations within the JAK2 kinase domain that confer resistance across a panel of JAK inhibitors, whether present in cis with JAK2 V617F (observed in MPNs) or JAK2 R683G (observed in B-ALL). G935R, Y931C, and E864K do not reduce the sensitivity of JAK2-dependent cells to inhibitors of heat shock protein 90 (HSP90), which promote the degradation of both wild-type and mutant JAK2. HSP90 inhibitors were 100–1,000-fold more potent against CRLF2-rearranged B-ALL cells, which correlated with JAK2 degradation and more extensive blockade of JAK2/STAT5, MAP kinase, and AKT signaling. In addition, the HSP90 inhibitor AUY922 prolonged survival of mice xenografted with primary human CRLF2-rearranged B-ALL further than an enzymatic JAK2 inhibitor. Thus, HSP90 is a promising therapeutic target in JAK2-driven cancers, including those with genetic resistance to JAK enzymatic inhibitors.
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影响因子:
20.3
作者:
Levy, Dana S.;Kahana, Jason A.;Kumar, Rakesh
通讯作者:
Kumar, Rakesh
DOI:
10.1186/bcr1996
发表时间:
2008
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Jensen MR;Schoepfer J;Radimerski T;Massey A;Guy CT;Brueggen J;Quadt C;Buckler A;Cozens R;Drysdale MJ;Garcia-Echeverria C;Chène P
通讯作者:
Chène P
影响因子:
64.5
作者:
Azam, M;Latek, RR;Daley, GQ
通讯作者:
Daley, GQ
影响因子:
15.9
作者:
Marubayashi, Sachie;Koppikar, Priya;Levine, Ross L.
通讯作者:
Levine, Ross L.
影响因子:
20.3
作者:
Green, Michael R.;Monti, Stefano;Shipp, Margaret A.
通讯作者:
Shipp, Margaret A.