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SRPK1 maintains acute myeloid leukemia through effects on isoform usage of epigenetic regulators including BRD4

  • Konstantinos Tzelepis*
  • , Etienne de Braekeleer
  • , Demetrios Aspris
  • , Isaia Barbieri
  • , M. S. Vijayabaskar
  • , Wen-Hsin Liu
  • , Malgorzata Gozdecka
  • , Emmanouil Metzakopian
  • , Hamish D. Toop
  • , Monika Dudek
  • , Samuel C. Robson
  • , Francisco Hermida-Prado
  • , Yu Hsuen Yang
  • , Roya Babaei-Jadidi
  • , Dimitrios A. Garyfallos
  • , Hannes Ponstingl
  • , Joao M. L. Dias
  • , Paolo Gallipoli
  • , Michael Seiler
  • , Silvia Buonamici
  • Binje Vick, Andrew J. Bannister, Roland Rad, Rab K. Prinjha, John C. Marioni, Brian Huntly, Jennifer Batson, Jonathan C. Morris, Cristina Pina, Allan Bradley, Irmela Jeremias, David O. Bates, Kosuke Yusa, Tony Kouzarides, George S. Vassiliou
*Corresponding author for this work
  • Wellcome Sanger Institute
  • Wellcome Trust/ Cancer Research UK Gurdon Institute
  • Karaiskakio Foundation
  • University of Cambridge
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • University of New South Wales
  • Exonate Ltd.
  • University of Portsmouth
  • Cambridge University Hospitals NHS Foundation Trust
  • Eisai Co., Ltd.
  • Technical University of Munich
  • German Cancer Research Center
  • GlaxoSmithKline
  • European Molecular Biology Laboratory
  • Ludwig Maximilian University of Munich
  • University of Nottingham

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We recently identified the splicing kinase gene SRPK1 as a genetic vulnerability of acute myeloid leukemia (AML). Here, we show that genetic or pharmacological inhibition of SRPK1 leads to cell cycle arrest, leukemic cell differentiation and prolonged survival of mice transplanted with MLL-rearranged AML. RNA-seq analysis demonstrates that SRPK1 inhibition leads to altered isoform levels of many genes including several with established roles in leukemogenesis such as MYB, BRD4 and MED24. We focus on BRD4 as its main isoforms have distinct molecular properties and find that SRPK1 inhibition produces a significant switch from the short to the long isoform at the mRNA and protein levels. This was associated with BRD4 eviction from genomic loci involved in leukemogenesis including BCL2 and MYC. We go on to show that this switch mediates at least part of the anti-leukemic effects of SRPK1 inhibition. Our findings reveal that SRPK1 represents a plausible new therapeutic target against AML.
Original languageEnglish
Article number5378
JournalNat. Commun.
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Dec 2018
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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