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相关概念视频

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

2.0K
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...
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Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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相关实验视频

Updated: May 21, 2025

Spatial Profiling of Protein and RNA Expression in Tissue: An Approach to Fine-Tune Virtual Microdissection
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Spatial Profiling of Protein and RNA Expression in Tissue: An Approach to Fine-Tune Virtual Microdissection

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用PHOTON进行细胞下层空间转录学.

Shreya Rajachandran1,2, Qianlan Xu1,2, Qiqi Cao1,2

  • 1Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA.

Nature communications
|May 14, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了PHOTON,这是一种用于空间转录组分析的新方法. 该技术以亚细胞分辨率绘制细胞和组织内的RNA分布图,进步我们对RNA功能和调节的理解.

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An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions
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Last Updated: May 21, 2025

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An Optogenetic Method to Control and Analyze Gene Expression Patterns in Cell-to-cell Interactions
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科学领域:

  • 分子生物学分子生物学
  • 基因组学就是基因组学.
  • 细胞生物学 细胞生物学

背景情况:

  • 在亚细胞区内RNA的局部化对其功能至关重要,包括存储,处理,翻译和降解.
  • 了解RNA的空间分布是解读其细胞内的调节作用和整体功能的关键.
  • 目前的方法可能缺乏分辨率或吞吐量,无法在完整组织内的亚细胞水平上全面绘制RNA.

研究的目的:

  • 介绍PHOTON,一种用于以亚细胞分辨率进行空间转录组分析的新方法.
  • 为了证明PHOTON在捕获组织水平转录组和器官特异性RNA含量的能力.
  • 研究m6A修饰在mRNA局部化到压力颗粒中的作用.

主要方法:

  • PHOTON将高分辨率成像与高通量测序相结合.
  • 该方法使组织内特定细胞类型的现场转录组分析成为可能.
  • 它允许分析亚细胞区内的RNA含量,如核细胞,线粒体和压力颗粒.

主要成果:

  • PHOTON准确地捕捉了目标细胞类型的转录组,例如卵巢颗粒细胞, in situ.
  • 该方法成功地分析了亚细胞区内的RNA含量,包括核细胞,线粒体和压力颗粒.
  • PHOTON揭示了m6A修饰在分离mRNA成压力颗粒中的功能作用.

结论:

  • PHOTON是一个多功能和可通用的平台,用于以亚细胞分辨率进行空间转录组分析.
  • 该方法为了解细胞下分子动力学提供了一个强大的镜头.
  • PHOTON促进了RNA局部化及其功能影响的研究,包括RNA修饰的作用.