Abstract
Somatic stem cells self-renew to maintain tissue homeostasis for the lifetime of organisms through tightly controlled proliferation and differentiation. Hematopoietic stem cells (HSCs) are essentially required for hematopoietic homeostasis. Therefore, they not only ensure lifelong replenishment of all blood lineages, but also maintain a constant pool. Cell cycle quiescence is a critical feature contributing to stem cell maintenance. Recent studies have highlighted the importance of bone marrow (BM) microenvironments that regulate HSC functions (HSC niches). In the HSC field, there has been considerable interest and debate regarding whether or not quiescence and proliferation of HSCs is regulated by distinct niches. Previous reports suggest that quiescent HSCs reside near osteoblasts in the BM whereas actively cycling HSCs are found near sinusoids. However, this popular concept has not been supported by rigorous analyses. To gain more insight into the spatial localization of HSCs, we have developed a whole-mount staining technique that allows precise measurements of 3D distances of HSCs from structures and allows computational simulation to define the significance of these interactions. This novel approach has allowed us to uncover two distinct types of vessels associated with quiescent and proliferating HSCs and to underscore the importance of arteriolar vessels for stem cell quiescence. We will discuss the crosstalk between the two hematopoietic and mesenchymal stem cells with a review of the recent literature.
| Original language | English |
|---|---|
| Pages (from-to) | 1888-1893 |
| Number of pages | 6 |
| Journal | [Rinshō ketsueki] The Japanese journal of clinical hematology |
| Volume | 56 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 1 2015 |
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All Science Journal Classification (ASJC) codes
- Medicine(all)
Cite this
The hematopoietic stem cell niche. / Kunisaki, Yuya.
In: [Rinshō ketsueki] The Japanese journal of clinical hematology, Vol. 56, No. 10, 01.10.2015, p. 1888-1893.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The hematopoietic stem cell niche
AU - Kunisaki, Yuya
PY - 2015/10/1
Y1 - 2015/10/1
N2 - Somatic stem cells self-renew to maintain tissue homeostasis for the lifetime of organisms through tightly controlled proliferation and differentiation. Hematopoietic stem cells (HSCs) are essentially required for hematopoietic homeostasis. Therefore, they not only ensure lifelong replenishment of all blood lineages, but also maintain a constant pool. Cell cycle quiescence is a critical feature contributing to stem cell maintenance. Recent studies have highlighted the importance of bone marrow (BM) microenvironments that regulate HSC functions (HSC niches). In the HSC field, there has been considerable interest and debate regarding whether or not quiescence and proliferation of HSCs is regulated by distinct niches. Previous reports suggest that quiescent HSCs reside near osteoblasts in the BM whereas actively cycling HSCs are found near sinusoids. However, this popular concept has not been supported by rigorous analyses. To gain more insight into the spatial localization of HSCs, we have developed a whole-mount staining technique that allows precise measurements of 3D distances of HSCs from structures and allows computational simulation to define the significance of these interactions. This novel approach has allowed us to uncover two distinct types of vessels associated with quiescent and proliferating HSCs and to underscore the importance of arteriolar vessels for stem cell quiescence. We will discuss the crosstalk between the two hematopoietic and mesenchymal stem cells with a review of the recent literature.
AB - Somatic stem cells self-renew to maintain tissue homeostasis for the lifetime of organisms through tightly controlled proliferation and differentiation. Hematopoietic stem cells (HSCs) are essentially required for hematopoietic homeostasis. Therefore, they not only ensure lifelong replenishment of all blood lineages, but also maintain a constant pool. Cell cycle quiescence is a critical feature contributing to stem cell maintenance. Recent studies have highlighted the importance of bone marrow (BM) microenvironments that regulate HSC functions (HSC niches). In the HSC field, there has been considerable interest and debate regarding whether or not quiescence and proliferation of HSCs is regulated by distinct niches. Previous reports suggest that quiescent HSCs reside near osteoblasts in the BM whereas actively cycling HSCs are found near sinusoids. However, this popular concept has not been supported by rigorous analyses. To gain more insight into the spatial localization of HSCs, we have developed a whole-mount staining technique that allows precise measurements of 3D distances of HSCs from structures and allows computational simulation to define the significance of these interactions. This novel approach has allowed us to uncover two distinct types of vessels associated with quiescent and proliferating HSCs and to underscore the importance of arteriolar vessels for stem cell quiescence. We will discuss the crosstalk between the two hematopoietic and mesenchymal stem cells with a review of the recent literature.
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UR - http://www.scopus.com/inward/citedby.url?scp=84986540317&partnerID=8YFLogxK
U2 - 10.11406/rinketsu.56.1888
DO - 10.11406/rinketsu.56.1888
M3 - Article
C2 - 26458426
AN - SCOPUS:84986540317
VL - 56
SP - 1888
EP - 1893
JO - [Rinsho ketsueki] The Japanese journal of clinical hematology
JF - [Rinsho ketsueki] The Japanese journal of clinical hematology
SN - 0485-1439
IS - 10
ER -