Single-cell characterization of haematopoietic progenitors and their trajectories in homeostasis and perturbed haematopoiesis

Nat Cell Biol. 2018 Jul;20(7):836-846. doi: 10.1038/s41556-018-0121-4. Epub 2018 Jun 18.

Abstract

The dynamics of haematopoietic stem cell differentiation and the hierarchy of oligopotent stem cells in the bone marrow remain controversial. Here we dissect haematopoietic progenitor populations at single cell resolution, deriving an unbiased reference model of transcriptional states in normal and perturbed murine bone marrow. We define the signature of the naive haematopoietic stem cell and find a continuum of core progenitor states. Core cell populations mix transcription of pre-myeloid and pre-lymphoid programs, but do not mix erythroid or megakaryocyte programs with other fates. CRISP-seq perturbation analysis confirms our models and reveals that Cebpa regulates entry into all myeloid fates, while Irf8 and PU.1 deficiency block later differentiation towards monocyte or granulocyte fates. Our transcriptional map defines a reference network model for blood progenitors and their differentiation trajectories during normal and perturbed haematopoiesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • CCAAT-Enhancer-Binding Proteins / genetics
  • CCAAT-Enhancer-Binding Proteins / metabolism
  • CRISPR-Cas Systems
  • Cell Lineage / genetics
  • Cell Proliferation / genetics
  • Cells, Cultured
  • Cellular Senescence / genetics
  • Erythropoietin / pharmacology
  • Female
  • Filgrastim / pharmacology
  • Gene Editing
  • Gene Expression Profiling / methods*
  • Gene Expression Regulation
  • Genotype
  • Hematinics / pharmacology
  • Hematopoiesis / drug effects
  • Hematopoiesis / genetics*
  • Hematopoietic Stem Cells / drug effects
  • Hematopoietic Stem Cells / metabolism
  • Hematopoietic Stem Cells / physiology*
  • Homeostasis
  • Interferon Regulatory Factors / genetics
  • Interferon Regulatory Factors / metabolism
  • Mice, Inbred C57BL
  • Phenotype
  • Proto-Oncogene Proteins / genetics
  • Proto-Oncogene Proteins / metabolism
  • Recombinant Proteins / pharmacology
  • Single-Cell Analysis / methods*
  • Time Factors
  • Trans-Activators / genetics
  • Trans-Activators / metabolism
  • Transcriptome*

Substances

  • CCAAT-Enhancer-Binding Proteins
  • CEBPA protein, mouse
  • Hematinics
  • Interferon Regulatory Factors
  • Proto-Oncogene Proteins
  • Recombinant Proteins
  • Trans-Activators
  • epoetin beta
  • interferon regulatory factor-8
  • proto-oncogene protein Spi-1
  • Erythropoietin
  • Filgrastim