H3K27M/I mutations promote context-dependent transformation in acute myeloid leukemia with RUNX1 alterations

Bernhard Lehnertz, Yu Wei Zhang, Isabel Boivin, Nadine Mayotte, Elisa Tomellini, Jalila Chagraoui, Vincent Philippe Lavallée, Josée Hébert, Guy Sauvageau

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Neomorphic missense mutations affecting crucial lysine residues in histone H3 genes significantly contribute to a variety of solid cancers. Despite the high prevalence of H3K27M mutations in pediatric glioblastoma and their well-established impact on global histone H3 lysine 27 di- and trimethylation (H3K27me2/3), the relevance of these mutations has not been studied in acute myeloid leukemia (AML). Here, we report the first identification of H3K27M and H3K27I mutations in patients with AML. We find that these lesions are major determinants of reduced H3K27me2/3 in these patients and that they are associated with common aberrations in the RUNX1 gene. We demonstrate that H3K27I/M mutations are strong disease accelerators in a RUNX1-RUNX1T1 AML mouse model, suggesting that H3K27me2/3 has an important and selective leukemia-suppressive activity in this genetic context.

Original languageEnglish (US)
Pages (from-to)2204-2214
Number of pages11
JournalBlood
Volume130
Issue number20
DOIs
StatePublished - Nov 16 2017
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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