The receptor tyrosine kinase Flt3 is required for dendritic cell development in peripheral lymphoid tissues.

The receptor tyrosine kinase Flt3 is required for dendritic cell development in peripheral lymphoid tissues.
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DOI:
10.1038/ni.1615
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发表时间:
2008-06
期刊:
影响因子:
30.5
通讯作者:
--
中科院分区:
医学1区
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--
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树突状细胞(DC)的发育始于骨髓,但直到未成熟的祖细胞到达它们在淋巴器官中的居住地后才完成。调节这些过程的造血生长因子尚不清楚。在这里,我们研究了fms样酪氨酸激酶3 (Flt3)信号传导对骨髓巨噬细胞DC祖细胞(MDP)和周围DC的影响。我们发现MDP室对Flt3配体(Flt3L)的超生理水平有反应,但不依赖于Flt3维持体内的稳态。相比之下,Flt3在调节脾脏内稳态DC发育中是必不可少的,它需要通过控制DC在周围的分裂来维持正常数量。
Dendritic cell (DC) development begins in the bone marrow but is not completed until after immature progenitors reach their sites of residence in lymphoid organs. The hematopoietic growth factors regulating these processes are poorly understood. Here we examine the effects of FMS-like tyrosine kinase 3 (Flt3) signaling on macrophage DC progenitors (MDP) in the bone marrow and on peripheral DCs. We find that the MDP compartment is responsive to super–physiologic levels of Flt3 ligand (Flt3L) but is not dependent on Flt3 for its homeostatic maintenance in vivo. In contrast, Flt3 is essential in regulation of homeostatic DC development in the spleen where it is required to maintain normal numbers of DCs by controlling their division in the periphery.
FLT3配体处理的小鼠功能成熟的树突状细胞数量的急剧增加:确定的多个树突状细胞亚群。
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影响因子: 15.3
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