在TEDDY研究中早期出现的1型糖尿病中的人类肠道微生物组
Tommi Vatanen1, Eric A Franzosa2,3, Randall Schwager3
1Broad Institute of MIT and Harvard, Cambridge, MA, USA. vatanen@broadinstitute.org.
Nature
|October 26, 2018
概括
研究人员分析了儿童的肠道微生物组,以了解1型糖尿病 (T1D) 的发展. 他们发现虽然特定的细菌有所变化,
科学领域:
- 微生物组研究
- 免疫学
- 儿童健康
背景情况:
- 一型糖尿病 (T1D) 是一种由遗传和环境影响的自身免疫性疾病.
- 人们怀疑肠道微生物在T1D病变中的作用,但尚未完全理解.
- 确定T1D的预测性微生物触发因素仍然是一个挑战.
研究的目的:
- 描述婴儿肠道微生物组的纵向发展.
- 研究早期肠道微生物组与小岛自身免疫或T1D之间的关系.
- 探索早期生命事件如抗生素和益生菌对微生物群的影响.
主要方法:
- 分析了TEDDY研究中783名儿童的10913个便基因组.
- 从3个月起每月采样,直到临床终点 (岛屿自身免疫或T1D).
- 对分类学和功能性微生物群的纵向评估.
主要成果:
- 对照儿童的微生物组显示出更多的发酵和短链脂肪酸 (SCFA) 生物合成基因.
- 与T1D相关的微生物因素在功能上是一致的,但在分类学上是不同的.
- 婴儿微生物组的发展是动态的,个性化的,并由特定的Bifidobacterium物种或蛋白质细菌主导.
- 在B. longum中,人类牛奶寡糖利用基因是特定于母乳养的婴儿.
结论:
- 肠道微生物组的改变与早期出现的1型糖尿病有关.
- 短链脂肪酸可能对T1D有保护作用.
- 这项研究为婴儿肠道微生物组提供了详细的纵向功能洞察.
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