Endogenous Indole Pyruvate Pathway for Tryptophan Metabolism Mediated by IL4I1

文献类型: 外文期刊

第一作者: Zhang, Xia

作者: Zhang, Xia;Li, Hui;Su, Meicheng;Tan, Dongfei;Wang, Shaolei;Jia, Man;Chen, Gang;Gan, Min;Li, Jingyun;Zhang, Liguo

作者机构:

关键词: indole pyruvate pathway; IL4I1; IAA; IAld; AHR signaling

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )

ISSN: 0021-8561

年卷期: 2020 年 68 卷 39 期

页码:

收录情况: SCI

摘要: L-tryptophan (Trp) is widely used in food and feed enforcement to play an important role in biological processes. Various metabolites of Trp perform its potent function. The indole pyruvate pathway is one of the main pathways of Trp metabolism in the gut microbiota, providing numerous indole-derivatives, which can modulate intestinal homeostasis and mucosal immunity by activating the aryl hydrocarbon receptor (AHR) signaling pathway. In this study, we constructed an IL4I1-overexpressed 293T cell line and found that IL4I1 can catalyze Tip to produce indole-3-acetic acid (IAA) and indole-3-carboxaldehyde (IAld). Moreover, both IAA and IAld are accumulated in dendritic cells (DCs) and can stimulate the expression of CYP1A1. Our results demonstrate the existence of the indole pyruvate pathway in host cells with IL4I1 as the key enzyme. The IL4I1-mediated Trp metabolism implies the role of dietary impact on immunity.

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