基于DNA的膜蛋白动态仿真用于编程适应性细胞相互作用
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
在PubMed上查看摘要
概括
此摘要是机器生成的。研究人员设计了一个模仿动态膜蛋白的细胞表面DNA纳米架构. 这种系统能够精确地控制细胞相互作用和治疗细胞工程,
科学领域
- 生物技术
- 合成生物学
- 细胞工程
背景情况
- 细胞膜动态调节蛋白质表达和构成,以感知和响应环境.
- 操纵细胞相互作用的现有方法往往缺乏对外部刺激的动态反应.
研究的目的
- 设计一种新的细胞表面纳米架构,
- 为了实现分子识别启动的DNA组合以控制细胞相互作用.
- 开发一个具有定制感应和响应能力的工程治疗细胞平台.
主要方法
- 一个膜固的DNA纳米架构的开发.
- 通过细胞反应信号触发的DNA组合的分子识别.
- 通过外部刺激来证明特定的激活.
- 将功能模块组装到细胞膜上以进行有针对性的结合和杀死.
主要成果
- 设计的DNA纳米架构成功模仿了动态膜蛋白的行为.
- 该系统是由细胞响应信号和外部刺激特别激活的.
- 在膜上组装了功能模块,使细胞类型特定的结合和杀死成为可能.
- 该平台展示了为细胞提供定制的传感和响应途径的能力.
结论
- 开发的细胞表面DNA纳米架构提供了一种模仿动态膜蛋白功能的新方法.
- 该系统为设计具有量身定制的环境传感和响应能力的治疗细胞提供了多功能平台.
- 这些发现为通过合成生物学推进基于细胞的疗法提供了一个新的范例.
相关概念视频
Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with...
The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
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,...
Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved semi-permeable membranes that regulate the passage of biological molecules. Additionally, the cell membrane defines a cell’s shape and interactions with the external environment. Eukaryotic cell membranes also serve to compartmentalize the internal space into organelles, including the endomembrane structures of the nucleus, endoplasmic reticulum and...
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...