The pan-BCL-2-blocker obatoclax (GX15-070) and the PI3-kinase/mTOR-inhibitor BEZ235 produce cooperative growth-inhibitory effects in ALL cells.
The pan-BCL-2-blocker obatoclax (GX15-070) and the PI3-kinase/mTOR-inhibitor BEZ235 produce cooperative growth-inhibitory effects in ALL cells.
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DOI：
10.18632/oncotarget.18810
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发表时间：
2017-09-15
期刊：
影响因子：
--
通讯作者：
Valent P
中科院分区：
文献类型：
--
作者：
Stefanzl G;Berger D;Cerny-Reiterer S;Blatt K;Eisenwort G;Sperr WR;Hoermann G;Lind K;Hauswirth AW;Bettelheim P;Sill H;Melo JV;Jäger U;Valent P
Acute lymphoblastic leukemia (ALL) is characterized by leukemic expansion of lymphoid blasts in hematopoietic tissues. Despite improved therapy only a subset of patients can be cured. Therefore, current research is focusing on new drug-targets. Members of the BCL-2 family and components of the PI3-kinase/mTOR pathway are critically involved in the regulation of growth and survival of ALL cells. We examined the effects of the pan-BCL-2 blocker obatoclax and the PI3-kinase/mTOR-inhibitor BEZ235 on growth and survival of ALL cells. In 3H-thymidine uptake experiments, both drugs suppressed the in vitro proliferation of leukemic cells in all patients with Philadelphia chromosome-positive (Ph+) ALL and Ph− ALL (obatoclax IC50: 0.01-5 μM; BEZ235, IC50: 0.01-1 μM). Both drugs were also found to produce growth-inhibitory effects in all Ph+ and all Ph− cell lines tested. Moreover, obatoclax and BEZ235 induced apoptosis in ALL cells. In drug-combination experiments, obatoclax and BEZ235 exerted synergistic growth-inhibitory effects on ALL cells. Finally, we confirmed that ALL cells, including CD34+/CD38− stem cells and all cell lines express transcripts for PI3-kinase, mTOR, BCL-2, MCL-1, and BCL-xL. Taken together, this data shows that combined targeting of the PI3-kinase/mTOR-pathway and BCL-2 family-members is a potent approach to counteract growth and survival of ALL cells.
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影响因子：
30.8
作者：
Holmfeldt, Linda;Wei, Lei;Diaz-Flores, Ernesto;Walsh, Michael;Zhang, Jinghui;Ding, Li;Payne-Turner, Debbie;Churchman, Michelle;Andersson, Anna;Chen, Shann-Ching;McCastlain, Kelly;Becksfort, Jared;Ma, Jing;Wu, Gang;Patel, Samir N.;Heatley, Susan L.;Phillips, Letha A.;Song, Guangchun;Easton, John;Parker, Matthew;Chen, Xiang;Rusch, Michael;Boggs, Kristy;Vadodaria, Bhavin;Hedlund, Erin;Drenberg, Christina;Baker, Sharyn;Pei, Deqing;Cheng, Cheng;Huether, Robert;Lu, Charles;Fulton, Robert S.;Fulton, Lucinda L.;Tabib, Yashodhan;Dooling, David J.;Ochoa, Kerri;Minden, Mark;Lewis, Ian D.;To, L. Bik;Marlton, Paula;Roberts, Andrew W.;Raca, Gordana;Stock, Wendy;Neale, Geoffrey;Drexler, Hans G.;Dickins, Ross A.;Ellison, David W.;Shurtleff, Sheila A.;Pui, Ching-Hon;Ribeiro, Raul C.;Devidas, Meenakshi;Carroll, Andrew J.;Heerema, Nyla A.;Wood, Brent;Borowitz, Michael J.;Gastier-Foster, Julie M.;Raimondi, Susana C.;Mardis, Elaine R.;Wilson, Richard K.;Downing, James R.;Hunger, Stephen P.;Loh, Mignon L.;Mullighan, Charles G.
通讯作者：
Mullighan, Charles G.
影响因子：
5.5
作者：
Peter, Barbara;Cerny-Reiterer, Sabine;Valent, Peter
通讯作者：
Valent, Peter
影响因子：
20.3
作者：
Ottmann, Oliver;Dombret, Herve;Coutre, Steven
通讯作者：
Coutre, Steven
影响因子：
20.3
作者：
Gleissner, B;Gökbuget, N;Thiel, E
通讯作者：
Thiel, E
影响因子：
158.5
作者：
Kantarjian, Hagop;Giles, Francis;Ottmann, Oliver G.
通讯作者：
Ottmann, Oliver G.