微球生物墨的同轴生物打印用于设计异质的血管化肺癌模型
Qiulei Gao1, Zhongwei Guo1, Shiqiang Zhang1
1Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, 450001, China.
Biomaterials advances
|February 1, 2026
概括
研究人员开发了一种新的3D生物打印方法,以创建现实的瘤模型. 这种3D生物打印方法克服了生物墨的局限性,使得体外瘤研究和药物查更好.
科学领域:
- 生物医学工程 生物医学工程
- 组织工程是组织工程.
- 癌症研究 癌症研究
背景情况:
- 3D生物打印为创建体外瘤模型提供了一个有前途的途径.
- 由于生物墨的局限性,复制内异质性,特别是 - 流体接口,仍然是一个重大挑战.
研究的目的:
- 为了设计一个生物模拟的3D肺癌模型,具有定义的膜 - 流层接口.
- 为了克服低度生物油墨直接挤压的风湿学限制.
- 建立一个可扩展和冷保存的平台,用于瘤生物学调查和药物查.
主要方法:
- 开发了一种用于直接挤出低度凝甲酸盐 (GelMA) /Matrigel生物的方法.
- 利用同轴生物打印系统创建模仿瘤微环境的双层管状结构.
- 内层:用于瘤围膜的GelMA/Matrigel生物墨水;外层:用于侧膜的HAMA/Fibrin水凝.
主要成果:
- 成功设计了一个3D肺癌模型,具有空间异质性和定义的辅酶体-流体界面.
- 证明了生物功能的重复,包括纤维细胞驱动的血管生成 (微血管密度增加3.4倍,血管长度延长2.3倍).
- 与2D培养相比,药物耐药性增加了50倍,突出显示了模型的翻译潜力.
结论:
- 开发的3D生物打印策略可以创建复杂,异构的瘤模型.
- 这种工程模型可以作为一个有价值的平台,用于按需的药物查和机制研究.
- 这种方法有可能促进个性化医疗和理解瘤生物学.
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