Abstract
Intrinsic and extrinsic cues determine developmental trajectories of hematopoietic stem cells (HSCs) towards erythroid, myeloid and lymphoid lineages. Using two newly generated transgenic mice that report and trace the expression of terminal deoxynucleotidyl transferase (TdT), transient induction of TdT was detected on a newly identified multipotent progenitor (MPP) subset that lacked self-renewal capacity but maintained multilineage differentiation potential. TdT induction on MPPs reflected a transcriptionally dynamic but uncommitted stage, characterized by low expression of lineage-associated genes. Single-cell CITE-seq indicated that multipotency in the TdT+ MPPs is associated with expression of the endothelial cell adhesion molecule ESAM. Stable and progressive upregulation of TdT defined the lymphoid developmental trajectory. Collectively, we here identify a new multipotent progenitor within the MPP4 compartment. Specification and commitment are defined by downregulation of ESAM which marks the progressive loss of alternative fates along all lineages.
Original language | American English |
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Pages (from-to) | 505-517 |
Number of pages | 13 |
Journal | Nature Immunology |
Volume | 23 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2022 |
Bibliographical note
Funding Information:We dedicate this work to the memory of T. Rolink, who has been a great mentor and a friend to all of us. His vision and passion for research will remain. We acknowledge C. Engdahl, G. Capoferri, M. Burgunder and S. Sikanjic for their contributions. We thank A. Offinger and L. Davidson and both teams of animal caretakers at the DBM Basel and NIDCR USA for constant support. Further we would like to acknowledge the Genomics Facility Basel (D-BSSE ETH Zürich) for generating the CITE-seq dataset. Calculations were performed at sciCORE ( http://scicore.unibas.ch/ ) scientific computing center at the University of Basel. We also thank Y. Belkaid, G. Trinchieri, A. Bhandoola and C. Dunbar for their inputs and discussion. This work was in part supported by the SNF grants PP00P3_179056, 310030_185193 and by the Research Fund of the University of Basel for the promotion of excellent junior researchers (FK). This research was in part supported by the Intramural Research Program of the NIH, NIDCR (ZIADE000752-02).
Funding Information:
We dedicate this work to the memory of T. Rolink, who has been a great mentor and a friend to all of us. His vision and passion for research will remain. We acknowledge C. Engdahl, G. Capoferri, M. Burgunder and S. Sikanjic for their contributions. We thank A. Offinger and L. Davidson and both teams of animal caretakers at the DBM Basel and NIDCR USA for constant support. Further we would like to acknowledge the Genomics Facility Basel (D-BSSE ETH Zürich) for generating the CITE-seq dataset. Calculations were performed at sciCORE (http://scicore.unibas.ch/) scientific computing center at the University of Basel. We also thank Y. Belkaid, G. Trinchieri, A. Bhandoola and C. Dunbar for their inputs and discussion. This work was in part supported by the SNF grants PP00P3_179056, 310030_185193 and by the Research Fund of the University of Basel for the promotion of excellent junior researchers (FK). This research was in part supported by the Intramural Research Program of the NIH, NIDCR (ZIADE000752-02).
Publisher Copyright:
© 2022, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
Keywords
- Animals
- Cell Differentiation
- Cell Lineage/genetics
- DNA Nucleotidylexotransferase/genetics
- Hematopoietic Stem Cells/physiology
- Mice
- Mice, Transgenic
- Multipotent Stem Cells