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Blood:双重胆碱能信号调控造血干细胞和白细胞在骨髓和外周血之间的日夜转移

2018-10-27 MedSci MedSci原创

中心点:在夜间,中枢副交感神经信号抑制交感神经信号来调节HSPC的转移。在夜间,局部交感神经胆碱能信号通过抑制昼行BM血管细胞的黏附和β3-肾上腺素信号来调节HSPC转移。摘要:随着昼夜节律的波动,造血干细胞和祖细胞(HSPCs)以及白细胞在骨髓(BM)和外周血之间不断地循环往复。自主交感神经去甲肾上腺素能信号已被证明可调控HSPC和白细胞转移,但胆碱能分支的作用尚不明确。研究人员在小鼠模型中研究

中心点:

在夜间,中枢副交感神经信号抑制交感神经信号来调节HSPC的转移。

在夜间,局部交感神经胆碱能信号通过抑制昼行BM血管细胞的黏附和β3-肾上腺素信号来调节HSPC转移。

摘要:

随着昼夜节律的波动,造血干细胞和祖细胞(HSPCs)以及白细胞在骨髓(BM)和外周血之间不断地循环往复。自主交感神经去甲肾上腺素能信号已被证明可调控HSPC和白细胞转移,但胆碱能分支的作用尚不明确。研究人员在小鼠模型中研究胆碱能神经系统在调控HSPCs和白细胞日夜转移中的作用。

研究人员发现自主胆碱能神经系统(包括副交感神经和交感神经)可双重调控HSPCs和白细胞的日常转移。在夜间,中枢副交感神经胆碱能信号抑制交感神经去甲肾上腺素能调剂,降低HSPCs和白细胞的BM输出量。但在白天,交感神经去甲肾上腺素能信号通过β3-AR促进HSPCs和白细胞从BM向外转移;这类输出主要是由光触发交感神经胆碱能活性,抑制BM血管细胞黏附和归巢来局部调控的。

总而言之,中枢(副交感神经)和局部(交感神经)胆碱能信号调控循环HSPCs和白细胞的日/夜波动。本研究展示了自主神经系统的两种分支(交感和副交感)是如何协同调控HSPCs和白细胞的日常转移。


原始出处:

Andrés García-García,et al. Dual cholinergic signals regulate daily migration of hematopoietic stem cells and leukocytes. Blood  2018  :blood-2018-08-867648;  doi: https://doi.org/10.1182/blood-2018-08-867648

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    2018-10-29 俅侠
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    2018-10-29 grace5704
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