An instructive role for Interleukin-7 receptor α in the development of human B-cell precursor leukemia

Nat Commun. 2022 Feb 3;13(1):659. doi: 10.1038/s41467-022-28218-7.

Abstract

Kinase signaling fuels growth of B-cell precursor acute lymphoblastic leukemia (BCP-ALL). Yet its role in leukemia initiation is unclear and has not been shown in primary human hematopoietic cells. We previously described activating mutations in interleukin-7 receptor alpha (IL7RA) in poor-prognosis "ph-like" BCP-ALL. Here we show that expression of activated mutant IL7RA in human CD34+ hematopoietic stem and progenitor cells induces a preleukemic state in transplanted immunodeficient NOD/LtSz-scid IL2Rγnull mice, characterized by persistence of self-renewing Pro-B cells with non-productive V(D)J gene rearrangements. Preleukemic CD34+CD10highCD19+ cells evolve into BCP-ALL with spontaneously acquired Cyclin Dependent Kinase Inhibitor 2 A (CDKN2A) deletions, as commonly observed in primary human BCP-ALL. CRISPR mediated gene silencing of CDKN2A in primary human CD34+ cells transduced with activated IL7RA results in robust development of BCP-ALLs in-vivo. Thus, we demonstrate that constitutive activation of IL7RA can initiate preleukemia in primary human hematopoietic progenitors and cooperates with CDKN2A silencing in progression into BCP-ALL.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Antigens, CD34 / genetics
  • Antigens, CD34 / immunology
  • Antigens, CD34 / metabolism
  • Base Sequence
  • Cell Differentiation / genetics
  • Cell Differentiation / immunology
  • Cyclin-Dependent Kinase Inhibitor p16 / genetics
  • Cyclin-Dependent Kinase Inhibitor p16 / immunology
  • Cyclin-Dependent Kinase Inhibitor p16 / metabolism
  • Gene Expression / immunology
  • Humans
  • Interleukin-7 Receptor alpha Subunit / genetics
  • Interleukin-7 Receptor alpha Subunit / immunology*
  • Interleukin-7 Receptor alpha Subunit / metabolism
  • Mice
  • Mice, Inbred NOD
  • Mice, Knockout
  • Mice, SCID
  • Precursor B-Cell Lymphoblastic Leukemia-Lymphoma / genetics
  • Precursor B-Cell Lymphoblastic Leukemia-Lymphoma / immunology*
  • Precursor B-Cell Lymphoblastic Leukemia-Lymphoma / metabolism
  • Precursor Cells, B-Lymphoid / immunology*
  • Precursor Cells, B-Lymphoid / metabolism
  • RNA-Seq / methods
  • Receptors, Cytokine / genetics
  • Receptors, Cytokine / immunology
  • Receptors, Cytokine / metabolism
  • Signal Transduction / genetics
  • Signal Transduction / immunology*
  • Single-Cell Analysis / methods
  • Transplantation, Heterologous

Substances

  • Antigens, CD34
  • CRLF2 protein, human
  • Cyclin-Dependent Kinase Inhibitor p16
  • Interleukin-7 Receptor alpha Subunit
  • Receptors, Cytokine