By the same authors

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From the same journal

Single-cell approaches identify the molecular network driving malignant hematopoietic stem cell self-renewal.

Research output: Contribution to journalArticle

Author(s)

  • MS Shepherd
  • J Li
  • NK Wilson
  • CA Oedekoven
  • J Li
  • M Belmonte
  • J Fink
  • JCM Prick
  • DC Pask
  • TL Hamilton
  • D Loeffler
  • A Rao
  • T Schröder
  • B Göttgens
  • AR Green
  • DG Kent

Department/unit(s)

Publication details

JournalBlood
DateAccepted/In press - 3 Jul 2018
DatePublished (current) - 23 Aug 2018
Issue number8
Volume132
Number of pages13
Pages (from-to)791-803
Original languageEnglish

Abstract

Recent advances in single-cell technologies have permitted the investigation of heterogeneous cell populations at previously unattainable resolution. Here we apply such approaches to resolve the molecular mechanisms driving disease in mouse hematopoietic stem cells (HSCs), using JAK2V617F mutant myeloproliferative neoplasms (MPNs) as a model. Single-cell gene expression and functional assays identified a subset of JAK2V617F mutant HSCs that display defective self-renewal. This defect is rescued at the single HSC level by crossing JAK2V617F mice with mice lacking TET2, the most commonly comutated gene in patients with MPN. Single-cell gene expression profiling of JAK2V617F-mutant HSCs revealed a loss of specific regulator genes, some of which were restored to normal levels in single TET2/JAK2 mutant HSCs. Of these, Bmi1 and, to a lesser extent, Pbx1 and Meis1 overexpression in JAK2-mutant HSCs could drive a disease phenotype and retain durable stem cell self-renewal in functional assays. Together, these single-cell approaches refine the molecules involved in clonal expansion of MPNs and have broad implications for deconstructing the molecular network of normal and malignant stem cells.

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