相关实验视频
Updated: Jul 27, 2026
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Applying Microfluidics to Electrophysiology
Published on: October 1, 2007
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一个前进的道路,推动微生理系统的发展
Thomas Hartung1,2, Lena Smirnova1
1Center for Alternatives to Animal Testing, Bloomberg School of Public Health and Whiting School of Engineering, Doerenkamp-Zbinden-Chair for Evidence-based Toxicology, Johns Hopkins University, Baltimore, MD, USA.
ALTEX
|April 15, 2025
概括
微生理系统 (MPS) 为药物开发提供了与人类相关的体外模型. 解决标准化,验证和监管方面的挑战对于它们的广泛采用和减少动物试验至关重要.
科学领域:
- 生物技术和生物工程 生物技术和生物工程
- 毒理学和药理学 毒理学和药理学
- 再生医学是一种再生医学.
背景情况:
- 微生理系统 (MPS),包括器官芯片和器官模型,是用于人类相关生物建模的先进体外工具.
- 这些技术对器官结构和功能进行了改造,有望彻底改变药物开发,减少动物试验,并实现个性化医疗.
研究的目的:
- 识别和分析阻碍采用和实施MPS的关键障碍.
- 提出可行的解决方案,以加快MPS技术的开发和接受.
主要方法:
- 审查MPS术语,协议,验证和监管途径当前的挑战.
- 分析国际倡议和贡献,例如动物试验替代中心 (CAAT) 的倡议和贡献.
- 审查包括全球标准化,增强验证框架和改进数据共享在内的拟议解决方案.
主要成果:
- 确定的主要挑战包括缺乏标准化,复杂的验证要求,监管不确定性和数据共享障碍.
- 国际努力和合作倡议对于进步至关重要.
- 拟议的解决方案侧重于全球标准,专业验证中心,竞争前联盟和明确的监管指导.
结论:
- 克服标准化,验证,监管和数据管理方面的挑战对于实现MPS的全部潜力至关重要.
- 学术界,工业界和监管机构之间的协调努力是成功将MPS整合到研究和开发中所必需的.
- 未来的优先事项包括解决技术复杂性,工程障碍,经济可访问性和与新兴技术的整合.
相关概念视频
01:09Cell Migration
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
01:19Cell Migration
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
01:39Mechanism of Filopodia Formation
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
01:31Mechanism of Lamellipodia Formation
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01:18Role of Myosin in Cell Migration
Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
Myosin II is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction. It is...
Myosin II is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction. It is...
01:11Direct Motor Pathways
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and the...