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相关概念视频

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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相关实验视频

Updated: Jun 18, 2025

A Fluorescence Microscopy Assay for Monitoring Mitophagy in the Yeast Saccharomyces cerevisiae
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HaloTag作为一个基质的宏自记者.

Qiang Xiao1,2, Gabrielle Cruz1,2,3, Rachel Botham1,2

  • 1Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037.

Proceedings of the National Academy of Sciences of the United States of America
|July 29, 2024
PubMed
概括

通过追踪TMR-HaloTag光合物,现在可以监测细胞自,这是一个关键的降解过程. 这种方法区分了自活化和抑制,有助于神经退行性疾病研究.

关键词:
这是HaloTag的标签.自自是自的过程.lysosome lysosome 是一种溶解体的组成部分.宏观自是一种自行为.记者 记者 记者 记者 记者

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Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

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相关实验视频

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科学领域:

  • 细胞生物学 细胞生物学
  • 分子生物学分子生物学
  • 神经科学是一个神经科学.

背景情况:

  • 宏自是一种关键的细胞降解途径,可以增强细胞在压力下生存,并防止神经退行性疾病.
  • 监测活细胞中的自调节对于理解其生理和病理作用至关重要,但在技术上仍然具有挑战性.

研究的目的:

  • 开发一种用于监测活细胞中自调节的新方法.
  • 为了利用TMR-HaloTag结合物作为自流动的光报告器.

主要方法:

  • 在感兴趣的细胞中HaloTag的表达和与四甲基胺 (TMR) 配体的反应.
  • 通过光显微镜观察光TMR-HaloTag在自和溶酶体中的合积累.
  • 使用SDS-PAGE评估TMR-HaloTag降解产品,并分析溶酶体点积累.

主要成果:

  • 溶酶体中TMR-HaloTag结合体积累的速度与自的速度相关.
  • 在基底条件下,TMR-HaloTag主要由蛋白酶体 (~95%) 降解,具有缓慢和不完整的溶酶体降解 (~10%).
  • 自激活是由SDS-PAGE上降解的TMR-HaloTag波段的增加和更快的 lysosomal puncta积累表明,它与抑制区分开来.
  • 蛋白质酶抑制导致TMR-HaloTag在溶酶体中的积累,这表明自和蛋白质酶体降解途径之间的交叉.

结论:

  • TMR-HaloTag光提供了一种可行的方法来监测活细胞中的自流量.
  • 这种技术可以区分自细胞的激活和抑制.
  • 这些发现突出了蛋白质酶和自细胞在细胞降解中的相互作用.