雅努斯树枝状体的自我组装成均的树枝状体和其他复杂的结构
Virgil Percec1, Daniela A Wilson, Pawaret Leowanawat
1Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA. percec@sas.upenn.edu
概括
研究人员创建了Janus树枝状体,可以自组装成各种纳米结构,如树枝状体,用于先进的药物输送应用. 这些结构为生物模仿者提供了增强的稳定性和受控的形成.
科学领域:
- 超分子化学 超分子化学
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 来自两动物的自组装纳米结构模仿生物膜.
- 这些结构对于药物,蛋白质,基因和成像剂的传递至关重要.
- 实现特定功能的精确分子排列仍然具有挑战性.
研究的目的:
- 为了探索两类Janus树状树体的自我组装到各种纳米结构.
- 研究这些树枝状体模仿生物膜的潜力,并使先进的传递系统成为可能.
- 开发一个模块化合成策略来调整分子结构和自组装架构.
主要方法:
- 通过易于合水友和疏水细分的双胞胎Janus树枝虫的制备.
- 使用低温传输电子显微镜 (cryo-TEM) 选树状分子库.
- 在水溶液中自我组装形态的表征.
主要成果:
- 观察到各种各样的水性形态,包括囊泡 (dendrimersomes),立方体,盘,管状囊泡和螺旋丝带.
- 登德里默体表现出结合聚合体稳定性与脂质体生物功能的特性.
- 树枝状体的关键优势包括优越的尺寸均性,易于形成和化学功能.
- 模块化合成允许分子结构和自组装架构的系统调整.
结论:
- 两的Janus树状树体为创建复杂,可调节的纳米结构提供了一个多功能平台.
- 登德里默体代表了一类有前途的仿生纳米载体,具有用于各种应用的增强特性.
- 模块化合成方法促进了针对特定功能要求的自组装架构的合理设计.
相关概念视频
Protein 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...
Protein 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...
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.
Assembly of Cytoskeletal Filaments
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
Assembly of Signaling Complexes
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Formation of Higher-order Actin Filaments
The polymerization of G-actin monomers into filamentous F-actin is a multi-step process. Once the F-actins are formed, they can bundle together in different arrangements to form higher-order networks and regulate cellular functions. Common examples include the formation of lamellipodia and filopodia at the cell's leading edge by actin reorganization in a migrating cell. The microvilli on the brush border epithelial cells are also formed through the F-actin network.
The high-order actin networks...
The high-order actin networks...


