TWIST1+FAP+ fibroblasts in the pathogenesis of intestinal fibrosis in Crohn's disease.

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ID: 280144
2024
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Abstract
Intestinal fibrosis, a severe complication of Crohn's disease (CD), is characterized by excessive extracellular matrix (ECM) deposition and induces intestinal strictures, but there are no effective anti-fibrosis drugs available for clinical application. We performed single-cell RNA sequencing (scRNA-seq) of fibrotic and non-fibrotic ileal tissues from CD patients with intestinal obstruction. Analysis revealed mesenchymal stromal cells (MSCs) as the major producers of ECM and the increased infiltration of its subset FAP+ fibroblasts in fibrotic sites, which was confirmed by immunofluorescence and flow cytometry. Single cell transcriptomic profiling of chronic Dextran Sulfate Sodium Salt (DSS) murine colitis model revealed Cd81+Pi16- fibroblasts exhibited transcriptomic and functional similarities to human FAP+ fibroblasts. Consistently, FAP+ fibroblasts were identified as the key subtype with the highest level of ECM production in fibrotic intestines. Furthermore, specific knockout or pharmacological inhibition of TWIST1, which was highly expressed by FAP+ fibroblasts, could significantly ameliorate fibrosis in mice. In addition, TWIST1 expression was induced by CXCL9+ macrophages enriched in fibrotic tissues via IL-1β and TGF-β signal. These findings suggest the inhibition of TWIST1 as a promising strategy for CD fibrosis treatment.
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zhang2024twist1fapthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhang, Yao;Wang, Jiaxin;Sun, Hongxiang;Xun, Zhenzhen;He, Zirui;Zhao, Yizhou;Qi, Jingjing;Sun, Sishen;Yang, Qidi;Gu, Yubei;Zhang, Ling;Zhou, Chunhua;Ye, Youqiong;Wu, Ningbo;Zou, Duowu;Su, Bing;
Journal The Journal of clinical investigation
Year 2024
DOI
e179472
URL
Keywords
fibrosis inflammatory bowel disease extracellular matrix gastroenterology

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