Osterix marks distinct waves of primitive and definitive stromal progenitors during bone marrow development.

Osterix marks distinct waves of primitive and definitive stromal progenitors during bone marrow development.
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DOI:
10.1016/j.devcel.2014.03.013
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发表时间:
2014-05-12
期刊:
影响因子:
11.8
通讯作者:
Frenette, Paul S.
Frenette, Paul S.
中科院分区:
生物学1区
文献类型:
--
作者:
Mizoguchi, Toshihide;Pinho, Sandra;Ahmed, Jalal;Kunisaki, Yuya;Hanoun, Maher;Mendelson, Avital;Ono, Noriaki;Kronenberg, Henry M.;Frenette, Paul S.

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间充质干细胞和祖细胞(MSPC)通过产生多种类型的基质细胞来促进骨髓(BM)的稳态。MSPCs可以在成年BM中通过Nestin-GFP标记,而定向成骨细胞祖细胞通过Osterix表达标记。然而,基质细胞的发育起源和层次关系仍然在很大程度上未知。在这里,使用谱系追踪系统,我们描述了三个不同的波的贡献Osterix+细胞在BM。首先,胎儿BM中的Osterix+祖细胞有助于新生骨组织和在成人骨髓中被替换的瞬时基质细胞。第二,Osterix表达细胞在围产期有助于形成具有Nestin-GFP+ MSPC特征的骨系和长寿BM基质。第三,成人骨髓中的Osterix标记是骨谱系限制性的,缺乏基质贡献。这些结果揭示了Osterix的广泛表达谱,并提出了有趣的可能性,即原始和永久的基质细胞的不同波可能组织发育中的BM。
Mesenchymal stem and progenitor cells (MSPCs) contribute to bone marrow (BM) homeostasis by generating multiple types of stromal cells. MSPCs can be labeled in the adult BM by Nestin-GFP, whereas committed osteoblast progenitors are marked by Osterix expression. However, the developmental origin and hierarchical relationship of stromal cells remain largely unknown. Here, using a lineage-tracing system, we describe three distinct waves of contributions of Osterix+ cells in the BM. First, Osterix+ progenitors in the fetal BM contribute to nascent bone tissues and transient stromal cells that are replaced in the adult marrow. Second, Osterix-expressing cells perinatally contribute to osteolineages and long-lived BM stroma, which have characteristics of Nestin-GFP+ MSPCs. Third, Osterix labeling in the adult marrow is osteolineage-restricted, devoid of stromal contribution. These results uncover a broad expression profile of Osterix and raise the intriguing possibility that distinct waves of stromal cells, primitive and definitive, may organize the developing BM.
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