Single-cell RNA-seq reveals new types of human blood dendritic cells, monocytes, and progenitors

Science. 2017 Apr 21;356(6335):eaah4573. doi: 10.1126/science.aah4573.

Abstract

Dendritic cells (DCs) and monocytes play a central role in pathogen sensing, phagocytosis, and antigen presentation and consist of multiple specialized subtypes. However, their identities and interrelationships are not fully understood. Using unbiased single-cell RNA sequencing (RNA-seq) of ~2400 cells, we identified six human DCs and four monocyte subtypes in human blood. Our study reveals a new DC subset that shares properties with plasmacytoid DCs (pDCs) but potently activates T cells, thus redefining pDCs; a new subdivision within the CD1C+ subset of DCs; the relationship between blastic plasmacytoid DC neoplasia cells and healthy DCs; and circulating progenitor of conventional DCs (cDCs). Our revised taxonomy will enable more accurate functional and developmental analyses as well as immune monitoring in health and disease.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Antigen Presentation
  • Classification
  • Dendritic Cells / classification*
  • Dendritic Cells / immunology
  • Female
  • Gene Expression Profiling
  • Humans
  • Lymphocyte Activation
  • Male
  • Monitoring, Immunologic
  • Monocytes / classification*
  • Monocytes / immunology
  • Neoplasms / immunology
  • Neoplasms / pathology
  • Sequence Analysis, RNA
  • Single-Cell Analysis
  • T-Lymphocytes / immunology*
  • Transcriptome
  • Young Adult