生物工程多细胞瘤球体与可调节的细胞外基质沉积.
Alessandro Motta1, Rasika Daware1, Alessia Nucci1
1Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen, Germany.
Acta biomaterialia
|January 22, 2026
概括
这项研究通过调整癌细胞-纤维细胞比率来标准化多细胞瘤球体 (MCTS),提高它们与体内瘤的相似性和药物查准确性.
科学领域:
- 生物医学工程 生物医学工程
- 癌症生物学 癌症生物学
- 3D细胞培养模型
背景情况:
- 传统的二维细胞培养试验不足以模拟复杂的瘤微环境.
- 三维多细胞瘤球体 (MCTS) 为研究瘤生物学和药物反应提供了一个有前途的平台.
- 缺乏MCTS形成方法的标准化,特别是关于树皮含量.
研究的目的:
- 系统地研究不同癌细胞-纤维细胞比率如何影响MCTS架构,分子概况和功能.
- 建立一个可重复的工程MCTS的策略,具有可调节的树皮含量和脱塑性活动.
- 提高3D体外瘤模型的准确性和相关性,用于药物查和生物研究.
主要方法:
- 在定义的比率下与纤维细胞共培养四种癌细胞系,以创建具有增加 stromal 含量的 MCTS.
- 使用组织学,活光显微镜,免疫光学,流细胞计和基因表达试验分析MCTS.
- 增长动力学,细胞组织,增殖,ECM沉积和表型状态的量化.
主要成果:
- 癌细胞的身份和纤维细胞的比例显著影响了球体的紧性,内部结构,脱塑性活动和增殖.
- 富含纤维细胞的MCTS表现出增加的细胞外基质 (ECM) 沉积和与纤维细胞激活和ECM重塑相关的基因的上调.
- 增加MCTS中的树皮含量降低了对化疗药物的敏感性,更准确地反映了体内药物反应.
结论:
- 建立了一种可复制的策略,用于设计具有可调节 stromal 内容的 MCTS,从而增强它们与体内瘤的相似性.
- 这些发现提供了一个标准化的框架,用于生成具有定义的树皮性质的MCTS,从而提高了体外3D瘤模型的可复制性.
- 开发的MCTS平台能够对瘤-肌瘤相互作用进行受控审讯,并为研究治疗反应的肌瘤调节提供了基础.
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