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BCL6 enables Ph+ acute lymphoblastic leukaemia cells to survive BCR-ABL1 kinase inhibition

  • Cihangir Duy
  • , Christian Hurtz
  • , Seyedmehdi Shojaee
  • , Leandro Cerchietti
  • , Huimin Geng
  • , Srividya Swaminathan
  • , Lars Klemm
  • , Soo Mi Kweon
  • , Rahul Nahar
  • , Melanie Braig
  • , Eugene Park
  • , Yong Mi Kim
  • , Wolf Karsten Hofmann
  • , Sebastian Herzog
  • , Hassan Jumaa
  • , H. Phillip Koeffler
  • , J. Jessica Yu
  • , Nora Heisterkamp
  • , Thomas G. Graeber
  • , Hong Wu
  • B. Hilda Ye, Ari Melnick, Markus Müschen
  • University of California at San Francisco
  • University of Southern California
  • University of Freiburg
  • Cornell University
  • University of Hamburg
  • Heidelberg University 
  • Cedars-Sinai Medical Center
  • Yeshiva University
  • University of California at Los Angeles

Research output: Contribution to journalArticlepeer-review

176 Scopus citations

Abstract

Tyrosine kinase inhibitors (TKIs) are widely used to treat patients with leukaemia driven by BCR-ABL1 (ref. 1) and other oncogenic tyrosine kinases. Recent efforts have focused on developing more potent TKIs that also inhibit mutant tyrosine kinases. However, even effective TKIs typically fail to eradicate leukaemia-initiating cells (LICs), which often cause recurrence of leukaemia after initially successful treatment. Here we report the discovery of a novel mechanism of drug resistance, which is based on protective feedback signalling of leukaemia cells in response to treatment with TKI. We identify BCL6 as a central component of this drug-resistance pathway and demonstrate that targeted inhibition of BCL6 leads to eradication of drug-resistant and leukaemia-initiating subclones.

Original languageEnglish
Pages (from-to)384-8
Number of pages5
JournalNature
Volume473
Issue number7347
DOIs
StatePublished - May 19 2011

Keywords

  • ADP-Ribosylation Factor 1/metabolism
  • Animals
  • Cell Survival/drug effects
  • DNA-Binding Proteins/biosynthesis
  • Drug Resistance, Neoplasm
  • Fusion Proteins, bcr-abl/antagonists & inhibitors
  • Gene Expression Regulation, Neoplastic/drug effects
  • Humans
  • Mice
  • Mice, Inbred NOD
  • Mice, SCID
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
  • Protein Kinase Inhibitors/pharmacology
  • Proto-Oncogene Proteins c-bcl-6
  • Transcription, Genetic
  • Tumor Suppressor Protein p53/metabolism

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