来自人类细胞外基质的多用途组织工程平台的超分子组装
Bruno Ladeira1, Maria Gomes1, Kongchang Wei2
1Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
Biomaterials
|March 25, 2025
概括
研究人员从人类胚胎膜 (hAM) 蛋白质和环极蛋白制造出可注射的水凝. 这些自组装材料模仿细胞外基质 (ECM),支持细胞递送,并促进组织修复.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 再生医学是一种再生医学.
背景情况:
- 复制细胞外矩阵 (ECM) 复杂性对于组织工程至关重要.
- 脱细胞化ECM水凝具有原生生物活性,但缺乏稳定性.
- 超分子材料模仿ECM的生物物理特性,但可能缺乏原生线索.
研究的目的:
- 开发一种稳定,可注射的水凝系统,重现原生ECM特性.
- 将脱细胞化ECM与超分子组装相结合,用于增强生物材料.
- 为了研究新型水凝系统中的细胞矩阵相互作用.
主要方法:
- 脱细胞化人类羊水膜 (hAM) 蛋白质的超分子组合,使用宿主-客人与烯-β-环极 (AcβCD) 的相互作用.
- 光聚合形成可调节的柔软凝,具有受控的机械特性 (减压,应变强化).
- 评估可注射性,自我复合,细胞输送,新血管化和细胞矩阵相互作用.
主要成果:
- 通过光聚合形成具有可调节机械性能的软水凝.
- 开发一种可注射颗粒材料,可以自行重组成可适应形状的水凝.
- 证明成功的细胞输送,促进新血管化,以及水凝中的细胞矩阵相互作用.
- 有证据表明封装细胞感知并对水凝的生物物理性质做出反应,有利于细胞在更容易受到压力的矩阵中扩散.
结论:
- 开发的基于hAM的超分子水凝系统有效地模仿本地ECM的生物物理和生物化学特性.
- 该材料的可注射和自复合性质有助于细胞递送和组织再生.
- 这种新型生物材料在组织修复和体外建模中显著有前途,可以替代原生ECM.
相关概念视频
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
01:57Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...