支柱阵列作为微生理系统的调节界面障碍
Ishan Goswami1,2, Yongdeok Kim1,2, Gabriel Neiman1
1Department of Bioengineering, University of California Berkeley.
Research square
|January 29, 2025
概括
研究人员开发了一种用于微流体微生理系统 (MPS) 的新型圆柱阵列. 这种可调节的屏障精确地控制了扩散,并有助于创建用于药物查和疾病建模的生理相关组织.
科学领域:
- 生物医学工程 生物医学工程
- 微流体学 微流体学
- 组织工程是组织工程.
背景情况:
- 像膜这样的传统微生理系统 (MPS) 屏障在孔隙大小一致性,制造复杂性和可扩展性方面存在局限性.
- 现有的接口缺乏可调性,无法精确控制扩散和液压阻力.
研究的目的:
- 设计和制造一种新的圆柱阵列,作为微流体MPS的可调节界面屏障.
- 通过精确控制毛孔大小,毛孔度和液压阻力来克服传统障碍的局限性.
- 证明这种屏障对工程生理学相关的微组织和药物查和疾病建模模型的实用性.
主要方法:
- 一个圆柱阵列的制造,尺寸可调节.
- 在微流体设备中集成柱阵列作为接口屏障.
- 使用屏障的血管系统的心脏微组织和异型模型的工程.
- 评估屏障在模拟体内扩散和使细胞迁移研究成为可能方面的作用.
主要成果:
- 圆柱阵列通过简单的柱子尺寸修改,通过简单的柱子尺寸修改,精确控制屏障特性 (毛孔大小,毛孔度,液压阻力).
- 该屏障促进细胞聚合以形成组织,并充当可调节的扩散屏障.
- 成功设计了生理相关的心脏微组织和血管化异型模型.
- 可调节的屏障设计可以比较MPS组织中的药物透性和细胞迁移,包括具有和没有血管系统的MPS组织.
结论:
- 新型的圆柱阵列为微流体MPS中的接口屏障提供了可扩展和可调节的解决方案.
- 这种设计克服了传统障碍的局限性,可以更好地模仿体内扩散和组织形成.
- 这项技术具有很大的潜力,可以在MPS中推进药物查,测试和疾病建模应用.
相关概念视频
01:14Stability of structures
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
01:10Control Systems
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
01:22Mechanical Systems
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
01:25Elements of Block Diagrams
Block diagrams serve as a visual representation of the input-output relationships within a system. An illustrative example is a heating system, where the set temperature activates the furnace to warm the room to the desired level. Block diagrams are versatile, modeling linear systems through Laplace transform variables and nonlinear systems using time domain variables.
A block diagram typically includes essential elements such as comparators, blocks, and feedback loops. Each of these elements...
A block diagram typically includes essential elements such as comparators, blocks, and feedback loops. Each of these elements...
01:20Relation between Mathematical Equations and Block Diagrams
In a spring-mass-damper system, the second-order differential equation describes the dynamic behavior of the system. When transformed into the Laplace domain under zero initial conditions, this equation can be effectively analyzed and manipulated. The transformation into the Laplace domain converts differential equations into algebraic equations, simplifying the process of isolating the output.
01:21Control System Problem
In an open-loop system, such as a basic thermostat, the poles of the transfer function influence the system's response but do not determine its stability. However, when feedback is introduced to form a closed-loop system, such as an advanced thermostat that adjusts heating based on room temperature, stability is governed by the new poles of the closed-loop transfer function.
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...