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Single-cell analysis reveals the continuum of human lympho-myeloid progenitor cells.

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Karamitros, Dimitris 
Stoilova, Bilyana 
Aboukhalil, Zahra 
Reinisch, Andreas 


The hierarchy of human hemopoietic progenitor cells that produce lymphoid and granulocytic-monocytic (myeloid) lineages is unclear. Multiple progenitor populations produce lymphoid and myeloid cells, but they remain incompletely characterized. Here we demonstrated that lympho-myeloid progenitor populations in cord blood - lymphoid-primed multi-potential progenitors (LMPPs), granulocyte-macrophage progenitors (GMPs) and multi-lymphoid progenitors (MLPs) - were functionally and transcriptionally distinct and heterogeneous at the clonal level, with progenitors of many different functional potentials present. Although most progenitors had the potential to develop into only one mature cell type ('uni-lineage potential'), bi- and rarer multi-lineage progenitors were present among LMPPs, GMPs and MLPs. Those findings, coupled with single-cell expression analyses, suggest that a continuum of progenitors execute lymphoid and myeloid differentiation, rather than only uni-lineage progenitors' being present downstream of stem cells.



Animals, Cell Differentiation, Cell Lineage, Cell Separation, Cells, Cultured, Gene Expression Profiling, Hematopoiesis, Hematopoietic Stem Cell Transplantation, Humans, Lymphoid Progenitor Cells, Mice, Myeloid Progenitor Cells, Single-Cell Analysis, Transplantation, Heterologous

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Nat Immunol

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Springer Science and Business Media LLC
Cancer Research UK (21762)
Leukaemia & Lymphoma Research (12029)
Medical Research Council (MC_PC_12009)
MRC (MR/K500975/1)
Wellcome Trust (206328/Z/17/Z)
MRC (MHU Award G1000729, MRC Disease Team Award 4050189188), CRUK (Program Grant to PV C7893/A12796, CRUK program grant to BG C1163/A21762), Bloodwise (Specialist Program 13001 and Project grant to 12019), an MRC PhD studentship (F.H. & Z.A.), The MRC Single Cell Award (MR/M00919X/1) to the WIMM and the Oxford Partnership Comprehensive Biomedical Research Centre (NIHR BRC Funding scheme). We thank the High-Throughput Genomics Group at the Wellcome Trust Centre for Human Genetics (funded by Wellcome Trust grant reference 090532/Z/09/Z) for generation of sequencing data. R.M. was supported by National Institutes of Health grants R01CA188055 and U01HL099999, New York Stem Cell Foundation Robertson Investigator and Leukemia and Lymphoma Society Scholar Award. A.R. was supported by an Erwin-Schroedinger Research fellowship from the Austrian Science Fund (FWF).