Spatial heterogeneity of bone marrow endothelial cells unveils a distinct subtype in the epiphysis
© 2023. The Author(s)..
Bone marrow endothelial cells (BMECs) play a key role in bone formation and haematopoiesis. Although recent studies uncovered the cellular taxonomy of stromal compartments in the bone marrow (BM), the complexity of BMECs is not fully characterized. In the present study, using single-cell RNA sequencing, we defined a spatial heterogeneity of BMECs and identified a capillary subtype, termed type S (secondary ossification) endothelial cells (ECs), exclusively existing in the epiphysis. Type S ECs possessed unique phenotypic characteristics in terms of structure, plasticity and gene expression profiles. Genetic experiments showed that type S ECs atypically contributed to the acquisition of bone strength by secreting type I collagen, the most abundant bone matrix component. Moreover, these cells formed a distinct reservoir for haematopoietic stem cells. These findings provide the landscape for the cellular architecture in the BM vasculature and underscore the importance of epiphyseal ECs during bone and haematopoietic development.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:25 |
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| Enthalten in: |
Nature cell biology - 25(2023), 10 vom: 13. Okt., Seite 1415-1425 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Iga, Takahito [VerfasserIn] |
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| Anmerkungen: |
Date Completed 01.11.2023 Date Revised 23.03.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1038/s41556-023-01240-7 |
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| 520 | |a Bone marrow endothelial cells (BMECs) play a key role in bone formation and haematopoiesis. Although recent studies uncovered the cellular taxonomy of stromal compartments in the bone marrow (BM), the complexity of BMECs is not fully characterized. In the present study, using single-cell RNA sequencing, we defined a spatial heterogeneity of BMECs and identified a capillary subtype, termed type S (secondary ossification) endothelial cells (ECs), exclusively existing in the epiphysis. Type S ECs possessed unique phenotypic characteristics in terms of structure, plasticity and gene expression profiles. Genetic experiments showed that type S ECs atypically contributed to the acquisition of bone strength by secreting type I collagen, the most abundant bone matrix component. Moreover, these cells formed a distinct reservoir for haematopoietic stem cells. These findings provide the landscape for the cellular architecture in the BM vasculature and underscore the importance of epiphyseal ECs during bone and haematopoietic development | ||
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| 700 | 1 | |a Kobayashi, Hiroshi |e verfasserin |4 aut | |
| 700 | 1 | |a Kusumoto, Dai |e verfasserin |4 aut | |
| 700 | 1 | |a Sanosaka, Tsukasa |e verfasserin |4 aut | |
| 700 | 1 | |a Fujita, Nobuyuki |e verfasserin |4 aut | |
| 700 | 1 | |a Tai-Nagara, Ikue |e verfasserin |4 aut | |
| 700 | 1 | |a Ando, Tomofumi |e verfasserin |4 aut | |
| 700 | 1 | |a Takahashi, Tomoko |e verfasserin |4 aut | |
| 700 | 1 | |a Matsuo, Koichi |e verfasserin |4 aut | |
| 700 | 1 | |a Hozumi, Katsuto |e verfasserin |4 aut | |
| 700 | 1 | |a Ito, Kosei |e verfasserin |4 aut | |
| 700 | 1 | |a Ema, Masatsugu |e verfasserin |4 aut | |
| 700 | 1 | |a Miyamoto, Takeshi |e verfasserin |4 aut | |
| 700 | 1 | |a Matsumoto, Morio |e verfasserin |4 aut | |
| 700 | 1 | |a Nakamura, Masaya |e verfasserin |4 aut | |
| 700 | 1 | |a Okano, Hideyuki |e verfasserin |4 aut | |
| 700 | 1 | |a Shibata, Shinsuke |e verfasserin |4 aut | |
| 700 | 1 | |a Kohyama, Jun |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Kevin K |e verfasserin |4 aut | |
| 700 | 1 | |a Takubo, Keiyo |e verfasserin |4 aut | |
| 700 | 1 | |a Kubota, Yoshiaki |e verfasserin |4 aut | |
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