香烟烟雾减弱了以介酶干细胞为基础的抑制免疫细胞驱动的急性肝衰竭
Dragica Pavlovic1, Dragana Miloradovic1, Milica Dimitrijevic Stojanovic2
1Department of Genetics, Center for harm reduction of biological and chemical hazards, Faculty of Medical Sciences, University of Kragujevac, 69 Svetozar Markovic Street, 34000 Kragujevac, Serbia.
Toxicology letters
|August 12, 2023
概括
暴露在香烟烟雾中会改变细胞间干细胞 (MSC),降低它们抑制炎症和保护肝脏的能力. 这会影响MSC治疗炎症性肝病的效果.
科学领域:
- 免疫学 免疫学 免疫学
- 干细胞生物学 干细胞生物学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 介酶干细胞 (MSCs) 具有免疫抑制和肝脏保护性质.
- 在肝损伤模型中,香烟烟雾对MSC功能的影响尚不清楚.
研究的目的:
- 研究香烟烟雾对MSC介导免疫调节和肝脏保护的负面影响背后的分子机制.
- 在发性肝炎的小鼠模型中评估暴露在香烟烟雾中的MSCs的治疗潜力.
主要方法:
- 使用了一种由α-galactosylceramide (α-GalCer) 诱导的肝损伤的小鼠模型.
- 在暴露于香烟烟雾的介质中培养MSCs (MSCWS-CM) 并将它们与对照MSCs (MSCCM) 相比较.
- 评估了细胞因子的产生,免疫细胞的透和调节性T细胞扩张在体外和体内.
主要成果:
- 暴露在香烟烟雾中的MSCs (MSCWS-CM) 呈现出一种亲炎性表型,产生较少的免疫抑制细胞因子 (TGF-β,HGF,IL-10,NO,KYN) 和更多的炎症细胞因子 (IFN-γ,TNF-α,IL-17,IL-6).
- 与对照MSCs (MSCCM) 不同的是,MSCWS-CM未能减轻α-GalCer诱导的肝炎,肝细胞损伤和肝炎.
- MSCWS-CM显示抑制炎症性巨细胞,树突细胞和淋巴细胞的能力降低,无法诱导抗炎调节性T细胞.
结论:
- 暴露在香烟烟雾中显著损害了MSCs的免疫抑制和肝脏保护功能.
- 暴露于烟雾中的MSCs的变异表型会损害它们在炎症性肝病中的治疗效果.
- 这些发现凸显了吸烟对基于MSC的免疫疗法的有害影响.
更多相关视频
相关概念视频
Mesenchymal Stem Cells
4.8K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.8K
Regulation of Hematopoietic Stem Cells
3.2K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.2K


