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Adrenomedullin-CALCRL axis controls relapse-initiating drug tolerant acute myeloid leukemia cells

  • Clément Larrue
  • , Nathan Guiraud
  • , Pierre Luc Mouchel
  • , Marine Dubois
  • , Thomas Farge
  • , Mathilde Gotanègre
  • , Claudie Bosc
  • , Estelle Saland
  • , Marie Laure Nicolau-Travers
  • , Marie Sabatier
  • , Nizar Serhan
  • , Ambrine Sahal
  • , Emeline Boet
  • , Sarah Mouche
  • , Quentin Heydt
  • , Nesrine Aroua
  • , Lucille Stuani
  • , Tony Kaoma
  • , Linus Angenendt
  • , Jan Henrik Mikesch
  • Christoph Schliemann, François Vergez, Jérôme Tamburini, Christian Récher, Jean Emmanuel Sarry*
*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

54 Citations (Scopus)

Abstract

Drug tolerant/resistant leukemic stem cell (LSC) subpopulations may explain frequent relapses in acute myeloid leukemia (AML), suggesting that these relapse-initiating cells (RICs) persistent after chemotherapy represent bona fide targets to prevent drug resistance and relapse. We uncover that calcitonin receptor-like receptor (CALCRL) is expressed in RICs, and that the overexpression of CALCRL and/or of its ligand adrenomedullin (ADM), and not CGRP, correlates to adverse outcome in AML. CALCRL knockdown impairs leukemic growth, decreases LSC frequency, and sensitizes to cytarabine in patient-derived xenograft models. Mechanistically, the ADM-CALCRL axis drives cell cycle, DNA repair, and mitochondrial OxPHOS function of AML blasts dependent on E2F1 and BCL2. Finally, CALCRL depletion reduces LSC frequency of RICs post-chemotherapy in vivo. In summary, our data highlight a critical role of ADM-CALCRL in post-chemotherapy persistence of these cells, and disclose a promising therapeutic target to prevent relapse in AML.

Original languageEnglish
Article number422
JournalNature Communications
Volume12
Issue number1
DOIs
Publication statusPublished - 18 Jan 2021

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