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相关概念视频

Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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Spatial Profiling of Protein and RNA Expression in Tissue: An Approach to Fine-Tune Virtual Microdissection
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一个计算框架,用于从空间转录学数据绘制图像的异形景观和监管机制.

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    此摘要是机器生成的。

    本研究介绍了SPLISOSM,这是一个用于分析空间转录组学的计算工具. 它揭示了大脑区域的转录多样性如何与神经精神疾病和癌症有关.

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    科学领域:

    • 基因组学就是基因组学.
    • 计算生物学 计算生物学
    • 神经科学是一个神经科学.

    背景情况:

    • 转录多样性,包括拼接和替代的3'端使用,对于细胞功能至关重要,但其空间调节尚不清楚.
    • 了解空间转录组模式对于破译复杂组织中的细胞身份和适应至关重要.
    • 现有的方法缺乏分辨率,以有效地捕捉异形级空间变化.

    研究的目的:

    • 开发一个计算框架,SPLISOSM (SpatiaL ISOform统计建模),用于检测空间转录学数据中的异形分辨率模式.
    • 研究小鼠和人类大脑中转录多样性的空间协调.
    • 分析人类质母细胞瘤的转录多样性及其与瘤微环境的关系.

    主要方法:

    • 开发SPLISOSM,一个计算框架,利用空间转录学多变量测试.
    • 应用SPLISOSM来分析小鼠和人类大脑样本中的空间转录多样性.
    • 整合RNA结合蛋白表达数据以确定调节关系.
    • 来自人类质母细胞瘤样本的空间转录组数据的分析.

    主要成果:

    • 在老鼠大脑中识别了超过1000个空间变量转录多样性事件,丰富了突触信号通路.
    • 在小鼠和人类前额叶皮层之间发现了保存的转录多样性模式,特别是在突触通路中.
    • 发现特定区域的RNA结合蛋白调节大脑中的空间转录多样性.
    • 人类质母细胞瘤中普遍的转录多样性的特征,与抗原呈现和粘附基因相关,并受到瘤微环境的影响.

    结论:

    • SPLISOSM提供了一种可靠的方法来分析异型层面的空间转录多样性,即使数据稀少.
    • 空间转录多样性在大脑功能,神经精神疾病和癌症中发挥着重要作用.
    • 空间转录多样性的进化保护突出了基本的生物过程.
    • 瘤微环境显著塑造了质瘤中的空间转录组景观,影响了关键的细胞功能.