Kinetic and mechanistic diversity of intestinal immune homeostasis characterized by rapid removal of gut bacteria.

Kinetic and mechanistic diversity of intestinal immune homeostasis characterized by rapid removal of gut bacteria.
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DOI:
10.1080/19490976.2023.2201154
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发表时间:
2023-01
期刊:
影响因子:
12.2
通讯作者:
--
中科院分区:
医学2区
文献类型:
--
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共生菌群以效应细胞特异性方式对宿主免疫稳态起关键作用。为了排除微生物成分,无菌动物一直是金标准方法。然而,从出生起就完全去除动物的整个肠道微生物群会显著扭曲生理发育。另一方面,使用口服抗生素从常规小鼠中去除肠道微生物群有其自身的局限性,特别是缺乏一致性和需要长期治疗期。在这里,我们介绍了一种改进的方案,以快速去除肠道微生物群并保持无菌性,这是深受动物欢迎而不会拒绝。快速一致地排除肠腔中的常驻细菌揭示了结肠淋巴细胞亚群之间的动力学差异,这在典型的无菌动物模型中无法观察到。此外,所提出的方法将微生物群贡献的机制区分为对有能力的效应细胞的直接刺激和维持此类细胞类型的稳态提示。
Symbiotic microbiota critically contribute to host immune homeostasis in effector cell-specific manner. For exclusion of microbial component, germ-free animals have been the gold standard method. However, total removal of the entire gut microbiota of an animal from birth significantly skews physiological development. On the other hand, removal of gut microbiota from conventional mice using oral antibiotics has its own limitations, especially lack of consistency and the requirement for long-term treatment period. Here, we introduce an improved regimen to quickly remove gut microbiota and to maintain sterility, that is well received by animals without refusal. Rapid and consistent exclusion of resident bacteria in the gut lumen revealed kinetic differences among colonic lymphocyte subsets, which cannot be observed with typical germ-free animal models. Furthermore, the proposed method distinguished the mechanism of microbiota contribution as a direct stimulus to capable effector cells and a homeostatic cue to maintain such cell types.
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