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相关概念视频

Cellular Differentiation00:57

Cellular Differentiation

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How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...
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General Transcription Factors01:30

General Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Determination01:51

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During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
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Commitment is the  process whereby stem cells:
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细胞功能图形:TOGGLE通过单细胞转录组学来划分单个细胞类型内的命运和功能.

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    科学领域:

    • 细胞生物学 细胞生物学
    • 基因组学就是基因组学.
    • 生物信息学是一种生物信息学.

    背景情况:

    • 功能性RNA调节细胞过程和命运.
    • 在相同的细胞类型内区分细胞状态是具有挑战性的,因为相似的基因表达.
    • 表观遗传记忆签名可以区分具有相似表达的细胞,但具有不同的起源/功能.

    研究的目的:

    • 开发新的方法来发现细胞水平的功能多样性.
    • 克服基于RNA表达的区分细胞功能状态的局限性.
    • 确定细胞命运决定的关键轨迹.

    主要方法:

    • 开发TOGGLE用于更高分辨率的细胞功能多样性的分析.
    • 基于TOGGLE创建了一个创新的图形扩散功能地图.
    • 使用先进的分析方法来减少噪音并增强高维数据中的功能分组.

    主要成果:

    • 图形扩散功能地图通过减少噪声来清晰地显示RNA功能分组.
    • 在高维数据中的微妙的功能差异被更有效地捕获.
    • 该方法成功地消除了基线功能的影响,识别了关键细胞命运决定轨迹.

    结论:

    • TOGGLE和图形扩散功能地图提供了一种强大的方法来解决细胞功能异质性.
    • 这些方法提高了对细胞记忆和细胞命运决定的理解.
    • 这种方法可以更清楚地了解RNA在细胞过程和分化中的作用.