携带脂肪介质干细胞的外体细胞功能通过抑制TGF-β1/Smad3轴来缓解硬质皮肤纤维化
Yu Xiao1,2,3, Qingyong Xiang4, Yingyu Wang1,2
1Division of Rheumatology, Huashan Hospital, Fudan University, Shanghai, China.
Scientific reports
|February 28, 2025
概括
脂肪酸衍生中干细胞外基因组在治疗全身性硬化症 (皮肤纤维化) 方面表现有前途. 这些外体体通过抑制原蛋白合成来模仿干细胞效应,为这种具有挑战性的疾病提供了潜在的新疗法.
科学领域:
- 生物医学研究的研究.
- 再生医学是一种再生医学.
- 结合组织疾病 结合组织疾病
背景情况:
- 系统性硬化症 (SSc) 是一种纤维性疾病,对皮肤表现的治疗选择有限.
- 介质干细胞 (MSCs) 显示出治疗潜力,其作用部分由分泌的外体细胞介导.
- 脂质衍生性介质干细胞 (AMSC) 是基于MSC的疗法的一个有希望的来源.
研究的目的:
- 调查来自AMSCs (AMSC-exos) 的外体是否具有与其母细胞相似的治疗作用,用于治疗SSc皮肤纤维化.
- 在临床前模型中比较AMSCs和AMSC-exos在调节纤维细胞原蛋白合成和缓解皮肤纤维化的有效性.
主要方法:
- 在体外:共培养AMSC和SSc皮肤纤维细胞,然后提取和识别AMSC-exos. 评估了原蛋白的合成.
- 在体内:在小鼠中使用白素 (BLM) 诱导SSc皮肤纤维化模型. 在皮下注射AMSCs和AMSC-exos.
- 研究了AMSC-exos对TGF-β1/Smad3信号通路的影响.
主要成果:
- 在体外,AMSC-exos表现出与AMSC相美的生物功能.
- 在SSc皮肤纤维细胞中,AMSC-exos显著抑制了原合成.
- 在BLM诱导的SSc小鼠模型中,通过皮下给药AMSC-exos缓解了皮肤纤维化.
- 该机制涉及TGF-β1/Smad3信号通路的抑制.
结论:
- 来自AMSCs的外体具有SSc皮肤纤维化治疗潜力.
- AMSC-exos可以作为SSc的AMSC的替代或补充疗法.
- 在治疗SSc皮肤纤维化方面,AMSC-exos代表了未来临床开发的有希望的候选人.
相关概念视频
Mesenchymal Stem Cells
4.6K
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...
4.6K
Clinical Applications of Epidermal Stem Cells
2.7K
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
2.7K


