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Sensitivity to PI3K and AKT inhibitors is mediated by divergent molecular mechanisms in subtypes of DLBCL

T. Erdmann, P. Klener, JT. Lynch, M. Grau, P. Vočková, J. Molinsky, D. Tuskova, K. Hudson, UM. Polanska, M. Grondine, M. Mayo, B. Dai, M. Pfeifer, K. Erdmann, D. Schwammbach, M. Zapukhlyak, AM. Staiger, G. Ott, WE. Berdel, BR. Davies, F....

. 2017 ; 130 (3) : 310-322. [pub] 20170215

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc17031040

Grantová podpora
NV15-27757A MZ0 CEP - Centrální evidence projektů

Activated B-cell-like (ABC) and germinal center B-cell-like diffuse large B-cell lymphoma (DLBCL) represent the 2 major molecular DLBCL subtypes. They are characterized by differences in clinical course and by divergent addiction to oncogenic pathways. To determine activity of novel compounds in these 2 subtypes, we conducted an unbiased pharmacologic in vitro screen. The phosphatidylinositol-3-kinase (PI3K) α/δ (PI3Kα/δ) inhibitor AZD8835 showed marked potency in ABC DLBCL models, whereas the protein kinase B (AKT) inhibitor AZD5363 induced apoptosis in PTEN-deficient DLBCLs irrespective of their molecular subtype. These in vitro results were confirmed in various cell line xenograft and patient-derived xenograft mouse models in vivo. Treatment with AZD8835 induced inhibition of nuclear factor κB signaling, prompting us to combine AZD8835 with the Bruton's tyrosine kinase inhibitor ibrutinib. This combination was synergistic and effective both in vitro and in vivo. In contrast, the AKT inhibitor AZD5363 was effective in PTEN-deficient DLBCLs through downregulation of the oncogenic transcription factor MYC. Collectively, our data suggest that patients should be stratified according to their oncogenic dependencies when treated with PI3K and AKT inhibitors.

Cluster of Excellence EXC 1003 Cells in Motion Münster Germany Department of Medicine A Hematology Oncology and Pneumology University Hospital Münster Münster Germany

Department of Clinical Pathology Robert Bosch Hospital Stuttgart Germany

Department of Clinical Pathology Robert Bosch Hospital Stuttgart Germany Dr Margarete Fischer Bosch Institute of Clinical Pharmacology Stuttgart Germany

Department of Physics Philipps University Marburg Germany

Division of Cancer Department of Surgery and Cancer Imperial College London United Kingdom

IMED Oncology AstraZeneca Gatehouse Park Boston MA

Innovative Medicines and Early Development Oncology AstraZeneca Li Ka Shing Centre Cambridge United Kingdom

Institute of Pathological Physiology 1st Faculty of Medicine Charles University Prague Prague Czech Republic 1st Medical Department Department of Hematology Charles University General Hospital Prague Prague Czech Republic

Translational Oncology University Hospital Münster Münster Germany Cluster of Excellence EXC 1003 Cells in Motion Münster Germany

Translational Oncology University Hospital Münster Münster Germany Cluster of Excellence EXC 1003 Cells in Motion Münster Germany Department of Medicine A Hematology Oncology and Pneumology University Hospital Münster Münster Germany

Translational Oncology University Hospital Münster Münster Germany Cluster of Excellence EXC 1003 Cells in Motion Münster Germany Fachbereich Chemie und Pharmazie University of Münster Münster Germany

Citace poskytuje Crossref.org

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