相关实验视频
Updated: Jun 23, 2025

08:40
Chronic Salmonella Infection Induced Intestinal Fibrosis
Published on: September 22, 2019
7.1K
由于Fut2缺乏,慢性结肠炎会通过2-oxindole-AHR介导的cGAS-STING通路恶化
Gaichao Hong1, Yajuan Zhao2, Qingyuan Li1
1Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
International immunopharmacology
|June 19, 2024
概括
失去了fucosyltransferase 2 (Fut2) 通过激活cGAS-STING通路,使肠道炎症恶化. 然而,微生物代谢物2-oxindole可以抑制这种途径,并改善Fut2缺乏小鼠的结肠炎.
科学领域:
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
- 微生物组研究 微生物组研究
背景情况:
- 基转移酶2 (Fut2) 在肠道内的宿主微生物相互作用中发挥作用.
- 这种cGAS-STING通路与肠道炎症有关,并受到肠道微生物群的影响.
- 失生症和改变的微生物代谢物与炎症性肠道疾病有关.
研究的目的:
- 通过cGAS-STING通路调查Fut2缺乏对肠道炎症的影响.
- 在Fut2缺乏的背景下,识别可以改善结肠炎的微生物代谢物.
- 阐明2-oxindole影响cGAS-STING通路和肠道炎症的机制.
主要方法:
- 在Fut2缺陷小鼠 (Fut2△IEC) 和野生类型对照中诱导慢性结肠炎.
- 评估肠道炎症,结肠损伤和cGAS-STING通路活动.
- 16S rRNA测序和肠道样本的代谢学;在体外和体内使用2-oxindole进行治疗.
主要成果:
- Fut2缺乏症加剧性结肠炎,其特征是体重减轻,结肠长度减小,疾病活动增加.
- 失去Fut2导致cGAS-STING通路激活的增加和肠道微生物群组成的显著改变,包括减少Lactobacillus.
- 观察到二氧化二氧化代谢物2-oxindole及其受体aryl碳化合物受体 (AHR) 的水平降低;通过抑制cGAS-STING信号传递,2-oxindole治疗可以预防结肠炎.
结论:
- Fut2缺乏通过增强cGAS-STING通路促进慢性结肠炎的易感性.
- 2-oxindole的保护作用涉及到2-oxindole-AHR轴的激活,这抑制了cGAS-STING信号传递.
- 针对2-氧醇-AHR轴为与Fut2缺乏相关的结肠炎提供了潜在的治疗策略.
相关概念视频
Inflammatory Bowel Disease II: Crohn's Disease
213
Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
213
Inflammatory Bowel Disease I: Ulcerative Colitis
161
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
161
Chronic Bowel Disorders: Introduction
440
Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
440
Drugs for Treatment of Ulcerative Colitis in IBD
135
Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
135
Gastritis-II: Pathophysiology
316
Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
316
Irritable Bowel Syndrome I: Introduction
268
Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
268

