Combined inhibition of PI3K-related DNA damage response kinases and mTORC1 induces apoptosis in MYC-driven B-cell lymphomas

Author:

Shortt Jake12,Martin Benjamin P.12,Newbold Andrea12,Hannan Katherine M.23,Devlin Jennifer R.23,Baker Adele J.12,Ralli Rachael12,Cullinane Carleen24,Schmitt Clemens A.56,Reimann Maurice5,Hall Michael N.7,Wall Meaghan23,Hannan Ross D.23,Pearson Richard B.23,McArthur Grant A.234,Johnstone Ricky W.12

Affiliation:

1. Gene Regulation Laboratory, Cancer Therapeutics Program, Peter MacCallum Cancer Centre, Melbourne, Australia;

2. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia;

3. Oncogenic Signalling and Growth Control Program and

4. Translational Research Laboratory, Cancer Therapeutics Program, Peter MacCallum Cancer Centre, Melbourne, Australia;

5. Charité-Universitätsmedizin Berlin/Molekulares Krebsforschungszentrum, Berlin, Germany;

6. Max Delbrück Center for Molecular Medicine, Berlin, Germany; and

7. Biozentrum, University of Basel, Basel, Switzerland

Abstract

Key PointsMYC-driven lymphomas demonstrate activation of mTORC1 and an endogenous DNA damage response. BEZ235 inhibits PI3K-related DNA damage response kinases and mTORC1, inducing p53-independent upregulation of proapoptotic BMF.

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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