空气-液体界面培养与分化因子相结合,在体外再生肠道细胞结构形成的分化因子
Isamu Ogawa1,2, Takaaki Nakai1, Takahiro Iwao1
1Department of Clinical Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan.
Biology open
|January 20, 2025
概括
研究人员使用人类诱导的多能干细胞 (iPSC) 开发了一种新的3D肠道模型. 这种空气-液体接口培养系统成功地模仿了密码-维卢斯结构,以增强药物开发.
科学领域:
- 干细胞生物学 干细胞生物学
- 胃肠病学 胃肠病学
- 药物发现 药物发现
背景情况:
- 目前的体外模型,如Caco-2细胞和人类诱导的多能干细胞 (iPSC) 衍生的肠上皮细胞,往往缺乏复杂的密码-维卢斯结构.
- 准确的体外模型对于制药研究和药物开发至关重要,特别是对于研究肠道生理学和药理动力学.
研究的目的:
- 使用人类iPSCs生成一个三维 (3D) 肠道细胞模型,模仿本地密码-维卢斯结构.
- 为先进的肠道组织工程建立一个简化的培养平台.
主要方法:
- 人类iPSCs被分化为肠道有机体.
- 器官被解离成单细胞并以二维 (2D) 方式培养,使用空气液体接口培养系统.
- 使用了关键化合物 (CHIR99021,福斯科林,A-83-01) 和长期培养因子 (Wnt3a,Noggin,RSPO1).
主要成果:
- 空气-液体接口培养成功诱导了快速增长的密室-维卢斯样结构的形成,到第6天.
- 观察到包括CYP3A4在内的药理学基因的增强表达.
- 肠道干细胞得到了高效的维护,这表明了强大而稳定的模型.
结论:
- 开发了一个简单而有效的培养平台,成功地在细胞培养插件上构建了一个类似于密室的结构.
- 生成的3D肠道模型表现出与活体肠道组织非常相似的特征,这表明可能存在优越的恒常机制.
- 这种先进的体外模型对制药研究,药物开发和理解肠道生物学具有重大前景.
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