Maternal aryl hydrocarbon receptor activation protects newborns against necrotizing enterocolitis.

Maternal aryl hydrocarbon receptor activation protects newborns against necrotizing enterocolitis.
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DOI:
10.1038/s41467-021-21356-4
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发表时间:
2021-02-15
影响因子:
16.6
通讯作者:
Hackam DJ
Hackam DJ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lu P;Yamaguchi Y;Fulton WB;Wang S;Zhou Q;Jia H;Kovler ML;Salazar AG;Sampah M;Prindle T Jr;Wipf P;Sodhi CP;Hackam DJ

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坏死性小肠结肠炎(NEC)是早产儿的一种疾病,其特征是急性肠坏死。目前的教条表明,NEC的发展,在应对出生后的饮食和细菌因素,因此在NEC子宫内因素的潜在作用仍然是未知的。我们现在表明,在怀孕期间,给予富含芳香烃受体(AHR)配体吲哚-3-甲醇(I3 C)的饮食或母乳,通过减少新生儿肠道中的Toll样受体4(TLR 4)信号传导激活AHR并预防新生小鼠的NEC。保护免受NEC需要肠上皮中AHR的活化,其在小鼠和人NEC中减少,并且不依赖于白细胞活化。最后,我们鉴定了AHR配体(“A18”),其限制小鼠和人肠中的TLR 4信号传导,并且当在妊娠期间施用时防止小鼠中的NEC。总之,AHR信号传导在NEC发展中至关重要,并且母体递送的基于AHR的疗法可以减轻NEC。坏死性小肠结肠炎(NEC)是一种早产儿疾病,需要肠道上皮细胞上的Toll样受体4(TLR 4)激活。在这里,作者表明,芳烃受体(AHR)通过对TLR 4的影响介导NEC的发病机制,并且在妊娠期间或产后补充饮食中的AHR配体可以预防NEC。
Necrotizing enterocolitis (NEC) is a disease of premature infants characterized by acute intestinal necrosis. Current dogma suggests that NEC develops in response to post-natal dietary and bacterial factors, and so a potential role for in utero factors in NEC remains unexplored. We now show that during pregnancy, administration of a diet rich in the aryl hydrocarbon receptor (AHR) ligand indole-3-carbinole (I3C), or of breast milk, activates AHR and prevents NEC in newborn mice by reducing Toll-like receptor 4 (TLR4) signaling in the newborn gut. Protection from NEC requires activation of AHR in the intestinal epithelium which is reduced in mouse and human NEC, and is independent of leukocyte activation. Finally, we identify an AHR ligand (“A18”) that limits TLR4 signaling in mouse and human intestine, and prevents NEC in mice when administered during pregnancy. In summary, AHR signaling is critical in NEC development, and maternally-delivered, AHR-based therapies may alleviate NEC. Necrotizing enterocolitis (NEC) is a disease of prematurity requiring Toll-like receptor 4 (TLR4) activation on the gut epithelium. Here the authors show that the aryl hydrocarbon receptor (AHR) mediates NEC pathogenesis via effects on TLR4, and that supplementing the diet with AHR ligands during pregnancy or postnatally prevents NEC.
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