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Osteoclasts promote the formation of hematopoietic stem cell niches in the bone marrow

Open access
Mansour, Anna, Abou-Ezzi, Grazia, Sitnicka, Ewa, W. Jacobsen, Sten Eirik, Wakkach, Abdelilah, Blin-Wakkach, Claudine·2012·Journal of Experimental Medicine

Abstract

Formation of the hematopoietic stem cell (HSC) niche in bone marrow (BM) is tightly associated with endochondral ossification, but little is known about the mechanisms involved. We used the oc/oc mouse, a mouse model with impaired endochondral ossification caused by a loss of osteoclast (OCL) activity, to investigate the role of osteoblasts (OBLs) and OCLs in the HSC niche formation. The absence of OCL activity resulted in a defective HSC niche associated with an increased proportion of mesenchymal progenitors but reduced osteoblastic differentiation, leading to impaired HSC homing to the BM. Restoration of OCL activity reversed the defect in HSC niche formation. Our data demonstrate that OBLs are required for establishing HSC niches and that osteoblastic development is induced by OCLs. These findings broaden our knowledge of the HSC niche formation, which is critical for understanding normal and pathological hematopoiesis.

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Metadata

Authors
Mansour, A., Abou-Ezzi, G., Sitnicka, E., W. Jacobsen, S. E., Wakkach, A., & Blin-Wakkach, C.
Venue
Journal of Experimental Medicine
Published
2012-02-20
Volume
209
Issue
3
Pages
537-549
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2105170197
Cited by
216
References
2
FWCI
13.06
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Osteoclasts promote the formation of hematopoietic stem cell niches in the bone marrow. https://app.cochat.ai/papers/10.1084/jem.20110994
The paper
Mansour, A., Abou-Ezzi, G., Sitnicka, E., W. Jacobsen, S. E., Wakkach, A., & Blin-Wakkach, C. (2012). Osteoclasts promote the formation of hematopoietic stem cell niches in the bone marrow. Journal of Experimental Medicine. https://doi.org/10.1084/jem.20110994

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.