Hematopoietic stem cells undergo a lymphoid to myeloid switch in early stages of emergency granulopoiesis

Author:

Vanickova Karolina12ORCID,Milosevic Mirko3,Ribeiro Bas Irina12,Burocziova Monika1ORCID,Yokota Asumi4,Danek Petr1,Grusanovic Srdjan1,Chiliński Mateusz56ORCID,Plewczynski Dariusz56ORCID,Rohlena Jakub3,Hirai Hideyo4ORCID,Rohlenova Katerina3ORCID,Alberich‐Jorda Meritxell17ORCID

Affiliation:

1. Laboratory of Hemato‐oncology Institute of Molecular Genetics of the Czech Academy of Sciences Prague Czech Republic

2. Faculty of Science Charles University Prague Czech Republic

3. Institute of Biotechnology of the Czech Academy of Sciences Prague Czech Republic

4. Laboratory of Stem Cell Regulation, School of Life Sciences Tokyo University of Pharmacy and Life Sciences Tokyo Japan

5. Laboratory of Bioinformatics and Computational Genomics, Faculty of Mathematics and Information Science Warsaw University of Technology Warsaw Poland

6. Laboratory of Functional and Structural Genomics, Centre of New Technologies University of Warsaw Warsaw Poland

7. Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, 2nd Faculty of Medicine, University Hospital Motol Charles University in Prague Praha Czech Republic

Abstract

AbstractEmergency granulopoiesis is the enhanced and accelerated production of granulocytes that occurs during acute infection. The contribution of hematopoietic stem cells (HSCs) to this process was reported; however, how HSCs participate in emergency granulopoiesis remains elusive. Here, using a mouse model of emergency granulopoiesis we observe transcriptional changes in HSCs as early as 4 h after lipopolysaccharide (LPS) administration. We observe that the HSC identity is changed towards a myeloid‐biased HSC and show that CD201 is enriched in lymphoid‐biased HSCs. While CD201 expression under steady‐state conditions reveals a lymphoid bias, under emergency granulopoiesis loss of CD201 marks the lymphoid‐to‐myeloid transcriptional switch. Mechanistically, we determine that lymphoid‐biased CD201+ HSCs act as a first response during emergency granulopoiesis due to direct sensing of LPS by TLR4 and downstream activation of NF‐κΒ signaling. The myeloid‐biased CD201 HSC population responds indirectly during an acute infection by sensing G‐CSF, increasing STAT3 phosphorylation, and upregulating LAP/LAP* C/EBPβ isoforms. In conclusion, HSC subpopulations support early phases of emergency granulopoiesis due to their transcriptional rewiring from a lymphoid‐biased to myeloid‐biased population and thus establishing alternative paths to supply elevated numbers of granulocytes.

Funder

European Molecular Biology Organization

Grantová Agentura České Republiky

Publisher

Springer Science and Business Media LLC

Subject

General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,Molecular Biology,General Neuroscience

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