材料表面与纤维细胞生长因子-2结合,用于多能干细胞培养和分化
Tzu-Cheng Sung1, Zhi-Xian Pan2, Ting Wang1
1State Key Laboratory of Ophthalmology, Optometry and Visual Science, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
Regenerative biomaterials
|February 19, 2025
概括
使用新型生物材料的稳定纤维细胞生长因子-2 (FGF-2) 能够长期培养人类诱导多能干细胞 (iPS),而无需介质中使用FGF-2,从而保持再生医学应用的多能性.
科学领域:
- 干细胞生物学 干细胞生物学
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
背景情况:
- 纤维细胞生长因子-2 (FGF-2) 对于维持人类多能干细胞 (PS) 多能性至关重要.
- 由于FGF-2的不稳定性限制了其在细胞培养中长期使用,因此需要经常补充.
- 开发稳定FGF-2配方对于高效和可扩展的PS细胞培养至关重要.
研究的目的:
- 开发和评估用于稳定FGF-2的FGF-2结合生物材料.
- 评估这些材料在支持人类诱导多能干细胞 (iPS) 细胞培养中没有外源性FGF-2的有效性.
- 研究FGF-2固定对iPS细胞多能性和分化潜力的影响.
主要方法:
- 结合FGF-2与聚乙烯醇水凝 (PVAI-C-FGF) 和甲基纤维素涂层餐具 (CMC-C-FGF).
- 在没有FGF-2的介质中,培养人类iPS细胞的复合性维特龙菌素 (rVN) 涂层的PVAI-C-FGF和CMC-C-FGF表面.
- 长期培养期后细胞增殖,多能和分化能力的评估.
主要成果:
- 人类iPS细胞无法在PVAI-C-FGF水凝上维持超过两个通道.
- 人类iPS细胞的长期培养 (10通道) 在没有FGF-2的rVN涂层CMC-C-FGF盘上成功.
- 在CMC-C-FGF培养的细胞保留了多能性和分化潜力,分为三个胚胎层,包括心肌细胞和视网膜色素上皮质.
- 由于在最佳基 (CMC) 和涂层 (rVN) 材料上通过固定稳定,所需的FGF-2数量显著减少.
结论:
- 结合FGF-2的CMC盘为人类PS细胞培养提供了一个稳定的平台,消除了对介质中的FGF-2的需求.
- 这种方法提高了FGF-2的稳定性,减少了所需的数量,并简化了细胞培养协议.
- 开发的生物材料支持iPS细胞的多能性和分化,为治疗心脏和视网膜疾病的治疗应用铺平了道路.
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