Macrophage-derived IL-1β/NF-κB signaling mediates parenteral nutrition-associated cholestasis.

Macrophage-derived IL-1β/NF-κB signaling mediates parenteral nutrition-associated cholestasis.
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DOI:
10.1038/s41467-018-03764-1
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发表时间:
2018-04-11
影响因子:
16.6
通讯作者:
Sokol RJ
Sokol RJ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
El Kasmi KC;Vue PM;Anderson AL;Devereaux MW;Ghosh S;Balasubramaniyan N;Fillon SA;Dahrenmoeller C;Allawzi A;Woods C;McKenna S;Wright CJ;Johnson L;D'Alessandro A;Reisz JA;Nozik-Grayck E;Suchy FJ;Sokol RJ

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In infants intolerant of enteral feeding because of intestinal disease, parenteral nutrition may be associated with cholestasis, which can progress to end-stage liver disease. Here we show the function of hepatic macrophages and phytosterols in parenteral nutrition-associated cholestasis (PNAC) pathogenesis using a mouse model that recapitulates the human pathophysiology and combines intestinal injury with parenteral nutrition. We combine genetic, molecular, and pharmacological approaches to identify an essential function of hepatic macrophages and IL-1β in PNAC. Pharmacological antagonism of  IL-1 signaling or genetic deficiency in CCR2, caspase-1 and caspase-11, or IL-1 receptor (which binds both IL-1α and IL-1β) prevents PNAC in mice. IL-1β increases hepatocyte NF-κB signaling, which interferes with farnesoid X receptor and liver X receptor bonding to respective promoters of canalicular bile and sterol transporter genes (Abcc2, Abcb11, and Abcg5/8), resulting in transcriptional suppression and subsequent cholestasis. Thus, hepatic macrophages, IL-1β, or NF-κB may be targets for restoring bile and sterol transport to treat PNAC. The authors previously developed a mouse model of parenteral nutrition-associated cholestasis (PNAC) that is dependent on parenteral phytosterols and intestinal injury with DSS. Here they refine the model and show that PNAC pathology is dependent on recruitment of hepatic macrophages and IL-1 signaling.
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