JAK2/IDH-mutant-driven myeloproliferative neoplasm is sensitive to combined targeted inhibition. Academic Article uri icon

Overview

abstract

  • Patients with myeloproliferative neoplasms (MPNs) frequently progress to bone marrow failure or acute myeloid leukemia (AML), and mutations in epigenetic regulators such as the metabolic enzyme isocitrate dehydrogenase (IDH) are associated with poor outcomes. Here, we showed that combined expression of Jak2V617F and mutant IDH1R132H or Idh2R140Q induces MPN progression, alters stem/progenitor cell function, and impairs differentiation in mice. Jak2V617F Idh2R140Q-mutant MPNs were sensitive to small-molecule inhibition of IDH. Combined inhibition of JAK2 and IDH2 normalized the stem and progenitor cell compartments in the murine model and reduced disease burden to a greater extent than was seen with JAK inhibition alone. In addition, combined JAK2 and IDH2 inhibitor treatment also reversed aberrant gene expression in MPN stem cells and reversed the metabolite perturbations induced by concurrent JAK2 and IDH2 mutations. Combined JAK2 and IDH2 inhibitor therapy also showed cooperative efficacy in cells from MPN patients with both JAK2mut and IDH2mut mutations. Taken together, these data suggest that combined JAK and IDH inhibition may offer a therapeutic advantage in this high-risk MPN subtype.

publication date

  • January 22, 2018

Research

keywords

  • Antineoplastic Agents
  • Gene Expression Regulation, Neoplastic
  • Isocitrate Dehydrogenase
  • Janus Kinase 2
  • Myeloproliferative Disorders

Identity

PubMed Central ID

  • PMC5785272

Scopus Document Identifier

  • 85041473110

Digital Object Identifier (DOI)

  • 10.1038/ng1180

PubMed ID

  • 29355841

Additional Document Info

volume

  • 128

issue

  • 2