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相关概念视频

Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
Pinching-off of Coated Vesicles01:32

Pinching-off of Coated Vesicles

Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
Membrane Asymmetry Regulating Transporters01:19

Membrane Asymmetry Regulating Transporters

Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...

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相关实验视频

Updated: May 21, 2026

Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors
16:19

Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors

Published on: September 10, 2013

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羽翼树枝体的树枝体.

Nerea Gonzalez-Sanchis1,2, Felix Bayard1,2, Juan Manuel García-Arcos3

  • 1Department of Organic Chemistry, University of Geneva Geneva Switzerland stefan.matile@unige.ch www.unige.ch/sciences/chiorg/matile/ +41 22 379 6523.

Chemical science
|February 23, 2026
PubMed
概括
此摘要是机器生成的。

新的飞树状体显著降低了细胞膜成像中的光毒性. 这些探测器在较低的激光功率下提供更明亮的光,使生物过程的监测时间更长.

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A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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相关实验视频

Last Updated: May 21, 2026

Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors
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Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors

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A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
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A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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科学领域:

  • 生物物理学的生物物理.
  • 超分子化学 超分子化学
  • 细胞生物学 细胞生物学

背景情况:

  • 光探器用于图像细胞膜中的力量.
  • 现有的探头遭受光毒性,限制了它们的应用.
  • 自从最初设计以来,它们一直缺乏显著的性能改进.

研究的目的:

  • 开发改进的光探测器,解决光毒性问题.
  • 为了增强光强度并保持对膜张力的响应能力.
  • 为了使细胞过程的长期监测.

主要方法:

  • 引入状树枝状体,大型状树枝状体,灵感来自倒置的.
  • 工程探测器集成到细胞环境使用超分子化学.
  • 调节光寿命和膜向通过型树突和疏水界面.

主要成果:

  • 与现有的探针相比,状树枝体在细胞中表现出明显更强的光.
  • 图像可以在大约一个数量级较低的激光功率下进行.
  • 降低的光毒性允许对生物动态进行延长的监测.
  • 对探头的定向,分布和内化有明显的控制.

结论:

  • 状树枝体代表了光探针技术的突破,通过最小化光毒性.
  • 这种超分子化学方法通过优化环境整合来提高探头性能.
  • 该策略广泛适用于改进其他分子探针.