在CSF1R信号,单细胞-巨分化的关系,和易受炎症性肠病的敏感性之间的关系
David A Hume1, Kim M Summers1, Claire O'Brien2
1Mater Research Institute, University of Queensland, Woolloongabba, Brisbane, Australia.
Cellular and molecular gastroenterology and hepatology
|March 28, 2025
概括
与炎症性肠病 (IBD) 风险相关的遗传变异可能会损害单细胞适应. 失调ETS2和CSF1/CSF1R信号破坏了抗炎性肠道巨细胞的形成,可能会加剧IBD.
科学领域:
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- 全基因组关联研究 (GWAS) 已经确定了300多个与炎症性肠病 (IBD) 易感性相关的位置.
- 将非编码基因变异与特定的基因功能联系起来,在IBD研究中仍然是一个重大挑战.
- 在21号染色体上ETS2基因附近的单核酸变体 (SNV) 与欧洲人的IBD风险有关,可能通过远端增强器影响ETS2转录.
研究的目的:
- 为IBD易感性提出一种替代机制,重点关注单细胞巨细胞激活和适应的失调.
- 研究ETS2和巨细胞殖民地刺激因子 (CSF1) /CSF1受体 (CSF1R) 信号通路在IBD病变发生过程中的作用.
- 探索针对IBD中的ETS2及其监管者的治疗潜力.
主要方法:
- 对IBD中遗传关联和分子机制的现有证据的审查和综合.
- 分析ETS2作为由CSF1信号调节的骨髓特异性转录因子的作用.
- 检查将CSF1/CSF1R信号,ETS2调节和单细胞分化联系在一起的拟议途径.
主要成果:
- 易受IBD的原因可能是单细胞对肠道环境的适应性受损,阻碍了性寄居肠道巨细胞的发展.
- 转录因子ETS2由CSF1下调,类似于其他IBD相关基因,如NOD2.
- ETS2的功能既是下游目标,也是CSF1/CSF1R信号通路的调解器.
结论:
- 单细胞适应的失调,受CSF1/CSF1R通路和ETS2的影响,为IBD病原体提供了一个替代模型.
- 针对ETS2的治疗策略可以调节单细胞分化,可能影响肠道炎症.
- 了解这些机制可能会导致IBD的新治疗方法,通过促进亲修复性巨细胞表型.
相关概念视频
Inflammatory Bowel Disease II: Crohn's Disease
141
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...
141
Chronic Bowel Disorders: Introduction
374
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...
374
Irritable Bowel Syndrome I: Introduction
211
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...
211
Inflammatory Bowel Disease I: Ulcerative Colitis
103
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...
103
Differentiation of Common Myeloid Progenitor Cells
3.2K
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
3.2K
NF-κB-dependent Signaling Pathway
7.2K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.2K


