相关实验视频
Updated: May 4, 2026

10:37
Single-cell Microfluidic Analysis of Bacillus subtilis
Published on: January 26, 2018
11.6K
通过细菌的通信和计算,细菌被细分在微乳液滴中.
Maximilian Weitz1, Andrea Mückl, Korbinian Kapsner
1Physics Department E14 and ZNN/WSI, Technische Universität München , Am Coulombwall 4a, D-85748 Garching, Germany.
Journal of the American Chemical Society
|December 24, 2013
概括
这项研究证明了在微乳液滴中使用N-acyl-L-homoserine乳 (AHLs) 和异-β-D-thio-galactopyranoside (IPTG) 的人工细菌通信. 带有AND门电路的工程大肠杆菌显示了编程的模式形成和分布式计算潜力.
科学领域:
- 合成生物学 合成生物学
- 微流体学 微流体学
- 细菌的传播 细菌的传播
背景情况:
- 细菌中的人工通信系统可以使用诱导分子进行工程设计.
- 微乳液滴提供了一个区分细菌群体和研究细胞间通信的平台.
研究的目的:
- 为了研究N-acyl-L-homoserine乳 (AHLs) 和异-β-D-thio-galactopyranoside (IPTG) 在微滴阵列中的扩散动力学.
- 用工程细菌演示基因编程的模式形成和分布式计算.
主要方法:
- 在油中的水微乳液滴中封装大肠杆菌.
- 研究从水库和含有发送者和接收者细菌的液滴之间诱导剂扩散.
- 基因表达动态的计算建模.
- 工程细菌与合成和门基因电路.
主要成果:
- 在微滴中观察到AHL和IPTG的有效扩散系数降低.
- 证明工程细菌只有在存在AHL和IPTG信号时才会响应.
- 展示了受诱导器扩散影响的空间扩展的通信模式.
结论:
- 人工细菌通信是可行的,使用微乳液滴滴阵列.
- 工程基因电路使得模式形成和分布式计算的复杂反应成为可能.
- 通过合成生物学方法,可以精确地控制细菌通信系统.
相关概念视频
Bacterial Signaling
29.8K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
29.8K
Prokaryotic Cells
29.4K
Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
29.4K
Prokaryotic Cells
109.1K
Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize proteins....
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize proteins....
109.1K
Eukaryotic Compartmentalization
13.9K
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal...
For example, lysosomes in the animal...
13.9K
Eukaryotic Compartmentalizations
137.2K
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
For example, lysosomes in the animal cells...
137.2K
Coordination of Gene Expression Processes in Bacteria
1.1K
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
1.1K

