2. Academic Validation
  3. Dual targeting of CDK6 and LSD1 is synergistic and overcomes differentiation blockade in AML

Dual targeting of CDK6 and LSD1 is synergistic and overcomes differentiation blockade in AML

  • EMBO Mol Med. 2025 Aug 29. doi: 10.1038/s44321-025-00296-2.
Lise Brault 1 2,  Edwige Voisset 1 2,  Mathieu Desaunay 1 2,  Antonia Boudet 1 2,  Paraskevi Kousteridou 1 2 3,  Sébastien Letard 1 2,  Nadine Carbuccia 1 2,  Armelle Goubard 1 4,  Rémy Castellano 1 4,  Yves Collette 1 4 5,  Julien Vernerey 1,  Isabelle Vigon 6,  Jean-Max Pasquet 5 6,  Patrice Dubreuil 1 2,  Sophie Lopez 1 2,  Paulo De Sepulveda 7 8 9
Affiliations

Affiliations

  • 1 Aix Marseille University, INSERM, CNRS, Institut Paoli-Calmettes, CRCM-Cancer Research Center of Marseille, Marseille, France.
  • 2 Signaling, Hematopoiesis and Mechanism of Oncogenesis Laboratory, Marseille, France.
  • 3 CRCM's Integrative Bioinformatics platform, Marseille, France.
  • 4 TrGET preclinical facility, CRCM, Marseille, France.
  • 5 Member of Institut Carnot OPALE (Organization for Partnerships in Leukemia), Paris, France.
  • 6 INSERM U1312, BRIC, Université de Bordeaux, Bordeaux, France.
  • 7 Aix Marseille University, INSERM, CNRS, Institut Paoli-Calmettes, CRCM-Cancer Research Center of Marseille, Marseille, France. paulo.de-sepulveda@inserm.fr.
  • 8 Signaling, Hematopoiesis and Mechanism of Oncogenesis Laboratory, Marseille, France. paulo.de-sepulveda@inserm.fr.
  • 9 Member of Institut Carnot OPALE (Organization for Partnerships in Leukemia), Paris, France. paulo.de-sepulveda@inserm.fr.
PMID: 40883610 DOI: 10.1038/s44321-025-00296-2
Abstract

The heterogeneity of leukemic cells is the main cause of resistance to therapy in acute myeloid leukemia (AML). Consequently, innovative therapeutic approaches are critical to target a wide spectrum of leukemic clones, regardless of their genetic and non-genetic complexity. In this report, we leverage the vulnerability of AML cells to CDK6 to identify a combination therapy capable of targeting common biological processes shared by all leukemic cells, while sparing non-transformed cells. We demonstrate that the combined inhibition of CDK6 and LSD1 restores myeloid differentiation and depletes the leukemic progenitor compartment in AML samples. Mechanistically, this combination induces major changes in chromatin accessibility, leading to the transcription of differentiation genes and diminished LSC signatures. Remarkably, the combination is synergistic, induces durable changes in the cells, and is effective in PDX mouse models. While many AML samples exhibit only modest responses to LSD1 inhibition, co-targeting CDK6 restores the expected transcription response associated with LSD1 inhibition. Given the availability of clinical-grade CDK6 and LSD1 inhibitors, this combination holds significant potential for implementation in clinical settings through drug repositioning.

Keywords

Iadademstat; Inhibitor; Kinase; Leukemia; Palbociclib.

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