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比较工程心脏组织的制造技术
Rachel Hatano1, Ariell M Smith2, Ritu Raman3,4
1Graduate Program in Bioengineering and Small-scale Technologies, University of California, Merced, USA.
Journal of biomedical materials research. Part A
|May 16, 2024
概括
这项研究比较了使用人类诱导的多能干细胞干细胞衍生的心肌细胞构建3D心脏组织的三种方法. 肌肉条和环显示细胞的高度对齐和延长,这对于工程心脏组织的同步收缩至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 干细胞生物学 干细胞生物学
- 心血管研究研究心血管研究
背景情况:
- 组织工程旨在创建用于药物测试和疾病建模的功能性体外模型.
- 产生同步收缩的3D心脏组织需要对齐的心脏细胞 (心肌细胞).
- 需要直接比较使用一致的细胞源的制造方法.
研究的目的:
- 为了比较三种不同的制造方法的有效性,将人类诱导的多能干细胞衍生的心肌细胞组装成功能性的3D心脏组织.
- 通过不同的方法来评估细胞对齐,延长和组织稳定性.
主要方法:
- 人类诱导的多能干细胞 (hiPSCs) 分化为心肌细胞 (CMs).
- 采用了三个制造方法:心脏球,肌肉环和肌肉条.
- 对每个方法进行了细胞对齐和延长的量化.
主要成果:
- 这三种方法都成功地产生了稳定,紧的hiPSC衍生的CM组织,至少持续了两周.
- 肌肉条 (55%) 和肌肉环 (50%) 与心脏球 (35%) 相比显示出明显更高的细胞对齐.
- 与肌肉环 (1.5) 和心脏球 (1.2) 相比,肌肉条显示出最大的心肌细胞延长 (因子2.0).
结论:
- 这项研究提供了第一个对心脏圈,肌肉环和肌肉条制造技术的直接比较,用于hiPSC衍生的心脏组织.
- 肌肉带和肌肉环方法提供了卓越的细胞对齐和延长,这是开发功能性工程心脏组织的关键因素.
- 这些发现指导未来心脏组织工程应用的制造方法的选择.
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