Science Immunol:补及率和微环境对腹膜巨噬细胞的性别二态性和功能的贡献

2020-06-22 QQY MedSci原创

众所周知,腹膜巨噬细胞与腹膜炎、子宫内膜异位症和癌症密切相关,但年龄和性别对这些细胞生物学的影响尚不清楚。在本研究中 ,Bain等人揭示了不同性别个体的腹膜巨噬细胞补充差异及机制。

巨噬细胞位于体腔中,它们维持浆膜腔的稳态并提供免疫监视。腹膜巨噬细胞与腹膜炎、子宫内膜异位和转移性癌症等病理病因有关,因此,了解决定其行为的因素至关重要。

使用命运映射技术的组合,Bain等人研究了性别和年龄对小鼠腹膜巨噬细胞分化、更新和功能的影响。他们证明来源于骨髓的腹膜巨噬细胞的性别二态性补充,在雄性中较高,在雌性中较低,受局部微环境的驱动,在性成熟过程中增强。

种群和单细胞RNA测序揭示了雄性和雌性腹膜巨噬细胞之间基因表达的显著二态性,部分原因是这些种群的组成差异。通过估计Ccr2-/-小鼠中不同亚群的巨噬细胞在腹腔内的停留时间,并评估随着年龄的增长和单核细胞减少症的二态性的发展,研究人员证明了腹膜巨噬细胞的关键性别依赖性特征是从骨髓中补充巨噬细胞的差异率的一个功能,而其他则依赖于局部微环境的信号。

总而言之,本研究证明,腹膜巨噬细胞的二态性转换有助于防止性别之间预防肺炎球菌腹膜炎的能力差异。这些数据凸显了在炎性和传染病易感性中考虑性别和年龄的重要性。

原始出处:

C. C. Brain,et al. Rate of replenishment and microenvironment contribute to the sexually dimorphic phenotype and function of peritoneal macrophages. Science Immunology 19 Jun 2020:Vol. 5, Issue 48, eabc4466DOI: 10.1126/sciimmunol.abc4466

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    2020-08-01 asheng007586

    比较新颖

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    2020-06-24 jichang
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