NAT MED:肠道微生物改善食物过敏

2019-06-30 海北 MedSci原创

至今为止,关于微生物生态失调在食物过敏(FA)中的作用仍不清楚。

至今为止,关于微生物生态失调在食物过敏(FA)中的作用仍不清楚。

最近,研究人员发现FA婴儿的粪便中的粪便微生物群随着时间的推移而进化,并且在小鼠中未能防止FA。具有FA的婴儿和小鼠具有与粪便细菌降低的IgA结合,以及增加的IgE结合,表明口腔耐受性比迄今为止所理解的更广泛。

受到生态失调影响的梭菌属物种的治疗,无论是作为一个联合体,还是作为单一疗法,都能在小鼠中抑制FA,如同单独的免疫调节性细菌性联合体一样。

细菌疗法通过调节性TTreg)细胞,以MyD88依赖性方式诱导转录因子ROR-γt的表达,其在FA婴儿和小鼠中缺乏,并且由其微生物群无效诱导。 Treg细胞中Myd88Rorc的缺失消除了细菌疗法的保护作用。

因此,共生体激活新生Treg细胞中的MyD88 / ROR-γt途径以防止FA,而生态失调损害了这种调节反应,以促进疾病。


原始出处:

Azza Abdel-Gadir et al. Microbiota therapy acts via a regulatory T cell MyD88/RORγt pathway to suppress food allergy. NAT MED, 2019; doi: 10.1038/s41591-019-0461-z


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    2020-01-10 liye789132251
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    2019-07-09 184****9840

    学习了,谢谢分享。

    0

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    2019-07-02 yhy100201
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