在合成微环境中机械激活器官
Francesca Sgualdino1, Lorenzo Mattolini1, Brian Daza Jimenez1
1Laboratory of Bioengineering and Morphogenesis, Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium.
Methods in molecular biology (Clifton, N.J.)
|February 23, 2024
概括
本研究详细介绍了一项使用执行技术在有机体中积极控制机械力的协议. 这种方法通过应用外部拉伸来增强人类神经管器官 (hNTO) 的模式.
科学领域:
- 生物医学工程 生物医学工程
- 发展生物学 发展生物学
- 组织工程是组织工程.
背景情况:
- 器官体是研究组织发育和细胞架构的有价值模型.
- 合成细胞外矩阵 (ECM) 提供被动机械调制,限制动力力控制.
- 主动力调制需要先进的执行技术,以精确的时间和大小控制.
研究的目的:
- 为在3D微环境中实现机械激活器官提供可复制的协议.
- 详细描述在活性机械刺激下对有机体命运和行为进行表征的方法.
- 为了能够更广泛地研究活力力学在体外模型系统中的作用.
主要方法:
- 在合成的3D微环境中嵌入有机体.
- 采用动作技术进行主动机械力调制 (拉伸).
- 描述器官细胞架构,命运和行为后的行为.
主要成果:
- 在人类神经管器官 (hNTO) 上施加外部拉伸被证明可以增强地板板域模式.
- 该协议有助于在时间和大小上积极调整机械力.
- 介绍了表征有机体对机械力反应的方法.
结论:
- 开发的协议提供了一种可重复的方法,用于对有机体施加活性机械力.
- 这种方法广泛适用于研究各种体外有机体模型中的活性力学的影响.
- 积极的机械刺激可以显著影响新出现的组织细胞架构和模式.
相关概念视频
Mechanical Protein Functions
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.
Mechanical Protein Function
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force.
Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
Microenvironments
Microorganisms inhabit highly localized spaces known as microenvironments, which are defined by distinct physical and chemical characteristics. These include oxygen concentration, pH, temperature, light availability, and nutrient levels. The conditions within a microenvironment can differ markedly from those in the surrounding area and significantly influence microbial growth, metabolism, and community structure.Microenvironments often display sharp physicochemical gradients over small spatial...
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...


