Cited by 137Hematopoietic Stem Cell TransplantationImmune Response and InflammationMesenchymal stem cell research

Sensing of the microbiota by NOD1 in mesenchymal stromal cells regulates murine hematopoiesis

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Iwamura, Chiaki, Bouladoux, Nicolas, Belkaid, Yasmine, Sher, Alan, Jankovic, Dragana·2017·Blood

Abstract

The microbiota is known to influence the generation of hematopoietic progenitors, although the pathways underlying this process are still poorly understood. NOD1 and NOD2 are intracellular sensors for both Gram-positive and Gram-negative bacteria, but their role in steady-state hematopoiesis has never been characterized. We observed that stimulation with NOD1 or NOD2 ligand had no effect on the survival/proliferation of hematopoietic precursors. Nonetheless, NOD1, but not NOD2, ligand induced expression of multiple hematopoietic cytokines (interleukin-7 [IL-7], Flt3L, stem cell factor [SCF], ThPO, and IL-6) from bone marrow mesenchymal stromal cells (MSCs) in vitro. Moreover, in vivo administration of NOD1 ligand to germ-free mice restored the numbers of hematopoietic stem cells and precursors in bone marrow as well as serum concentrations of IL-7, Flt3L, SCF, and ThPO to the levels displayed by specific pathogen-free control animals. Based on these findings, we propose that NOD1 signaling in MSCs serves as an important pathway underlying the requirement for microbiota in the maintenance of steady-state hematopoiesis. This function is distinct from that triggered by lipopolysaccharide in both its broad effects on multiple progenitors and specific targeting of MSCs as cytokine producing intermediates.

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Authors
Iwamura, C., Bouladoux, N., Belkaid, Y., Sher, A., & Jankovic, D.
Affiliations
  • National Institute of Allergy and Infectious Diseases (US)
  • National Institutes of Health (US)
Corresponding author
  • Sher, Alan
  • Jankovic, Dragana
Venue
Blood
Published
2017-01-12
Volume
129
Issue
2
Pages
171-176
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2543679265
Cited by
137
References
22
Citations by year
2026: 6 · 2025: 7 · 2024: 24 · 2023: 14 · 2022: 15 · 2021: 23 · 2020: 15 · 2019: 14 · 2018: 12 · 2017: 7
FWCI
10.47
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • McGill University
  • Uehara Memorial Foundation
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases
Topics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
NOD1, NOD2, gut microbiota, mesenchymal stem cells, hematopoiesis, hematopoietic stem cells, hematopoietic progenitor cells, germ-free mice, cytokine production, IL-7, Flt3L, stem cell factor, interleukin-6, innate immune recognition, bone marrow
MeSH terms
Animals, Bone Marrow Cells, Cell Separation, Cells, Cultured, Flow Cytometry, Germ-Free Life, Hematopoiesis, Mice, Inbred C57BL, Polymerase Chain Reaction, Mice, Knockout, Mice, Nod1 Signaling Adaptor Protein, Mesenchymal Stem Cells, Microbiota

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