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相关概念视频

Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

6.4K
Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
6.4K
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

2.9K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.9K

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相关实验视频

Updated: Apr 19, 2026

Mapping Molecular Diffusion in the Plasma Membrane by Multiple-Target Tracing MTT
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Mapping Molecular Diffusion in the Plasma Membrane by Multiple-Target Tracing MTT

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使用单个量子点跟踪绘制细胞内扩散分布的映射:由内质网膜定义的细分扩散.

Hui Li1, Shuo-Xing Dou, Yu-Ru Liu

  • 1Key Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.

Journal of the American Chemical Society
|December 24, 2014
PubMed
概括
此摘要是机器生成的。

研究人员使用量子点绘制了细胞内扩散的地图,揭示了细胞环境的细胞内网膜结构. 这一发现影响了对大分子运动和纳米粒子药物输送策略的理解.

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Single-Molecule Tracking Microscopy - A Tool for Determining the Diffusive States of Cytosolic Molecules
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Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
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Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy

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相关实验视频

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Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
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科学领域:

  • 细胞生物学 细胞生物学
  • 生物物理学的生物物理.

背景情况:

  • 细胞内环境显著影响细胞过程,如新陈代谢和信号传递.
  • 了解异质细胞质中的宏分子扩散至关重要,但仍然不完整.

研究的目的:

  • 开发一种用于快速绘制单细胞内细胞内扩散分布的新方法.
  • 调查阻碍宏分子扩散和细胞质细分的起源.

主要方法:

  • 利用量子点 (QD) 的单粒子跟踪 (SPT) 来绘制扩散图.
  • 同时通过使用绿色光蛋白 (GFP) 标记观察QD运动和内质网膜 (ER) 动态.
  • 用光素异硫酸-dextrans. 证实了这些发现.

主要成果:

  • 开发了一种快速的方法来绘制单细胞内的扩散分布图.
  • 在细胞质中发现了QD扩散的以前未报告的细分.
  • 证明了内等质网膜管和水箱定义了微米级域,限制QD扩散,形成周核区域.

结论:

  • 细胞内膜网膜在分隔细胞内扩散方面发挥着重要作用.
  • 绘制细胞内扩散的地图为宏分子运动和潜在的治疗应用提供了洞察力.
  • 这项研究为开发基于纳米粒子的药物输送系统开辟了道路.