生物模拟血管化的iPSC-肝细胞球体用于肝脏再生
Jinglin Wang1, Danqing Huang1, Haozhen Ren1
1Division of Hepatobiliary and Transplantation Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 24, 2024
概括
来自人类诱导的多能干细胞的血管化肝细胞球形体显示出增强的肝脏修复能力. 这种新的方法改善了细胞功能和针对性治疗急性肝衰竭的治疗.
科学领域:
- 再生医学是一种再生医学.
- 生物材料科学 生物材料科学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 人类诱导的多能干细胞衍生肝细胞 (hiPSC-heps) 显示出治疗急性肝衰竭 (ALF) 的潜力.
- hiPSC-heps的治疗疗效通常受到低生物活性和体内向性不佳的限制.
- 现有的ALF治疗方法在细胞存活和功能整合方面面临挑战.
研究的目的:
- 开发一个血管化的hiPSC-hep球形系统,以增强肝脏的修复.
- 通过改善血管化和细胞-细胞通信来提高hiPSC-heps的治疗疗效.
- 为了研究这个系统在肝脏修复中对正管移植的潜力.
主要方法:
- 微流体微囊的制造,含有水性核心和混合水凝外 (甲基酸盐/氨酸甲基烯酸 - HAMA).
- 在微囊中封装hiPSC-heps以形成球形.
- 选择性降解酸盐以创建多孔的HAMA外,使人静脉内皮细胞 (HUVEC) 集成和血管网络形成.
- 在ALF模型中评估细胞通信,肝功能和治疗疗效.
主要成果:
- 成功创建了带有多孔HAMA外的血管化hiPSC-hep球体.
- 在球状体内展示了HUVEC附着和血管网络形成.
- 展示了HUVECs和hiPSC-heps之间的增强通信,改善了营养支持和肝功能.
- 在ALF模型中观察到,在血管化球体的正管移植后,肝脏修复得到改善.
- 由于特定的细胞空间分布,表示免疫细胞攻击减少.
结论:
- 血管化的hiPSC-hep球体代表了增强急性肝衰竭肝脏修复的有希望的策略.
- 微囊系统促进了血管化和细胞相互作用,提高了hiPSC-hep的治疗潜力.
- 这种方法为肝脏疾病的再生医学中的临床应用提供了一个可行的平台.
相关概念视频
Liver Regeneration
3.2K
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
3.2K
iPS Cell Differentiation
2.6K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
2.6K


