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相关概念视频

Reporter Genes02:11

Reporter Genes

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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
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Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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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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相关实验视频

Updated: Jun 14, 2025

Glutamine Flux Imaging Using Genetically Encoded Sensors
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Glutamine Flux Imaging Using Genetically Encoded Sensors

Published on: July 31, 2014

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基因编码的光传感器可用于可视化聚胺水平,吸收和分布.

Ryo Tamura, Jialin Chen, Marijke De Jaeger

    bioRxiv : the preprint server for biology
    |September 4, 2024
    PubMed
    概括

    研究人员开发了针对多氨酸的新型遗传编码生物传感器,称为iPASnFRs. 这些工具可以实时监测聚胺水平,并为与聚胺破坏有关的疾病发现新的治疗化合物提供便利.

    科学领域:

    • 生物化学 生物化学
    • 分子生物学分子生物学
    • 细胞生物学 细胞生物学

    背景情况:

    • 多氨酸是参与众多细胞过程的重要生物分子.
    • 破坏的聚胺水平与癌症和神经系统疾病等疾病有关.
    • 目前的方法缺乏在细胞内实时测量自由聚胺度的能力.

    研究的目的:

    • 设计和验证第一个基因编码的多氨酸生物传感器 (iPASnFRs).
    • 为了实时检测和监测哺乳动物细胞中聚胺的吸收和分布.
    • 为了促进高通量选调节聚胺水平的化合物.

    主要方法:

    • 聚胺生物传感器 (iPASnFRs) 的基因工程.
    • 在哺乳动物细胞中验证传感器功能,包括不同的亚细胞区 (细胞质,线粒体,细胞核).
    • 传感器在小分子库的高通量选中的应用.

    主要成果:

    • 成功设计和表征iPASnFRs,第一个遗传编码的聚胺生物传感器.
    • 证明iPASnFRs在检测聚胺进口和分布在细胞器官中的实用性.
    • 通过化合物库选,识别多个能够显著调节细胞聚胺水平的小分子.

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    结论:

    • iPASnFRs是研究聚胺代谢,运输和健康和疾病中的功能的强大工具.
    • 这些传感器可以探测聚胺转运器的活动,并发现新的生化途径.
    • 开发的传感器可以选针对聚胺通路的潜在治疗剂.