调整核酸载荷的共价有机框架:朝着创建一个层次化的人工细胞
Yiming Wang1,2, Chen Wang1,2, Yunlong Zheng3,4
1State Key Laboratory of Green Biomanufacturing, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Journal of the American Chemical Society
|June 13, 2025
概括
研究人员使用共价有机框架 (COF) 创建了具有核结构的先进人工细胞. 这种方法使得复杂的DNA封装和无细胞转录/翻译能够用于新生物系统.
科学领域:
- 合成生物学
- 材料科学
- 生物技术
背景情况:
- 人工细胞的自下而上的构建对于生命科学和应用至关重要.
- 现有的单一方法往往会产生过于简单的结构.
- 需要先进的层次结构来实现更复杂的人工细胞功能.
研究的目的:
- 开发一种用于构建具有核状结构的人工细胞的新策略.
- 使用共价有机框架 (COF) 进行DNA封装和分离.
- 在这些人造核中整合无细胞转录和翻译 (CFTT).
主要方法:
- 用于线性和循环DNA封装的时空策略的共价有机框架 (COF).
- 采用模板牺牲方法 (COFcap-1) 在COF中封装圆形质粒.
- 在COF结构中集成的无细胞转录和翻译系统 (CFTT).
- 在脂质体内构建人工核逻辑门和封装的COF-DNA复合体.
主要成果:
- 使用COF成功构建了线性和圆形DNA的核结构.
- 证明了COF孔径和微环境对CFTT效率的关键作用.
- 设计了三个人工核逻辑门,实现了人工细胞器之间的信息传输.
- 在脂质体内成功封装了DNA载荷的COF,形成了等级化的人工细胞.
结论:
- 这项研究提出了一种使用多孔COF制造高度结构化的人工细胞的新方法.
- 开发的基于COF的核结构提高了DNA封装和CFTT的效率.
- 这项工作为构建各种应用的复杂,层次化的人工细胞开辟了新的途径.
相关概念视频
00:58DNA Packaging
102.3K
Overview
102.3K
01:18Assembly of Cytoskeletal Filaments
18.6K
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...
18.6K
01:25Nucleic Acid Structure
6.1K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
6.1K
02:05DNA as a Genetic Template
21.8K
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
21.8K