CSF1R inhibition by a small-molecule inhibitor is not microglia specific; affecting hematopoiesis and the function of macrophages.

CSF1R inhibition by a small-molecule inhibitor is not microglia specific; affecting hematopoiesis and the function of macrophages.
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DOI:
10.1073/pnas.1922788117
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发表时间:
2020-09-22
影响因子:
11.1
通讯作者:
Paschalis EI
Paschalis EI
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lei F;Cui N;Zhou C;Chodosh J;Vavvas DG;Paschalis EI

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抑制集落刺激因子1受体(CSF1R)被认为是一种不影响外周免疫细胞的小胶质细胞耗竭的方法。在这里,我们表明,PLX5622抑制CSF1R确实影响髓系和淋巴系隔室,通过抑制白细胞介素1β、CD68和吞噬功能导致骨髓来源的巨噬细胞的长期变化,而不是CD208,暴露于内毒素后,还减少了腹膜、肺和肝脏的常驻和间质巨噬细胞的数量,但不减少脾。因此,小分子CSF1R抑制并不局限于小胶质细胞,对循环和组织巨噬细胞产生强烈影响,在停止治疗后持续很长时间。考虑到CSF1R抑制后外周血单核细胞重新聚集在中枢神经系统,这些变化对相关实验数据具有实际意义。
Colony-stimulating factor 1 receptor (CSF1R) inhibition has been proposed as a method for microglia depletion, with the assumption that it does not affect peripheral immune cells. Here, we show that CSF1R inhibition by PLX5622 indeed affects the myeloid and lymphoid compartments, causes long-term changes in bone marrow-derived macrophages by suppressing interleukin 1β, CD68, and phagocytosis but not CD208, following exposure to endotoxin, and also reduces the population of resident and interstitial macrophages of peritoneum, lung, and liver but not spleen. Thus, small-molecule CSF1R inhibition is not restricted to microglia, causing strong effects on circulating and tissue macrophages that perdure long after cessation of the treatment. Given that peripheral monocytes repopulate the central nervous system after CSF1R inhibition, these changes have practical implications for relevant experimental data.
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