通过宏观超分子组件制造特定站点的3D结构,用于空间控制多个细胞的对齐
Yuchen Liu1, Rui Ming1, Qian Zhang1
1State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 11, 2025
概括
宏观超分子组合 (MSA) 通过在组装后指导细胞粘附来创建3D生物活性结构. 这种类似于乐高的策略使复杂组织工程的精确细胞分类和空间控制成为可能.
科学领域:
- 生物材料工程 生物材料工程
- 组织工程是组织工程.
- 超分子化学 超分子化学
背景情况:
- 宏观超分子组件 (MSA) 为创建3D生物活性结构提供了一个模块化方法.
- 如3D生物打印等现有方法在平衡细胞活力和材料选择方面面临挑战.
- 高效的细胞自我分类和空间控制仍然是MSA中复杂组织制造的关键挑战.
研究的目的:
- 开发一种新的MSA战略,用于制造空间控制的,细胞载荷的3D生物活性结构.
- 在自组装结构中克服细胞分类和分布的局限性.
- 为了创建复杂的,分层的血管结构,模仿本地组织.
主要方法:
- 在微小的聚二甲基 (PDMS) 组件上利用了针对内皮细胞 (ECs) 和光滑肌细胞 (SMCs) 的直角特异性.
- 嵌入宿主/客分子作为超分子合剂,用于精确的组件组装和界面粘合.
- 结合基于的表面化学与磁性操纵,用于定向细胞粘附和分类.
主要成果:
- 实现了EC和SMC的高效自我排序和空间控制的粘附.
- 成功制造3D生物活性结构,具有模仿血管组织的分层架构.
- 演示了一种"类似乐高"的策略,将材料制备与细胞负载脱,保持细胞活力.
结论:
- 开发的MSA策略可以创建复杂的,细胞特异的3D架构,而不会影响细胞活力.
- 这种方法促进了对细胞分布和自我分类的精确控制,推进了组织工程.
- 这些发现为MSA在构建复杂的生物活性材料中的更广泛应用铺平了道路.
相关概念视频
Assembly of Complex Microtubule Structures
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
Electron Microscope Tomography and Single-particle Reconstruction
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...


