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相关概念视频

Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Forced Transdifferentiation01:28

Forced Transdifferentiation

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Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
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Determination01:51

Determination

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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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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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iPS Cell Differentiation01:22

iPS Cell Differentiation

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The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
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Lineage Commitment01:21

Lineage Commitment

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Commitment is the  process whereby stem cells:
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相关实验视频

Updated: Apr 25, 2026

Derivation of Adult Human Fibroblasts and their Direct Conversion into Expandable Neural Progenitor Cells
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剖析工程细胞类型并通过CellNet增强细胞命运转化.

Samantha A Morris1, Patrick Cahan1, Hu Li2

  • 1Stem Cell Transplantation Program, Division of Pediatric Hematology and Oncology, Manton Center for Orphan Disease Research, Howard Hughes Medical Institute, Boston Children's Hospital and Dana Farber Cancer Institute, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA.

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|August 16, 2014
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概括

网络生物学平台CellNet通过识别和纠正基因调节错误,改善了用于再生医学的工程细胞开发. 这项技术增强了细胞转化,并为工程细胞揭示了新的治疗潜力.

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Efficient Neural Differentiation using Single-Cell Culture of Human Embryonic Stem Cells
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Efficient Neural Differentiation using Single-Cell Culture of Human Embryonic Stem Cells
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科学领域:

  • 细胞重编程和再生医学
  • 网络生物学和基因监管网络.
  • 生物技术和生物工程

背景情况:

  • 当前的细胞工程协议往往无法复制目标细胞的特征,限制了再生医学中的应用.
  • 在体外 (in vitro) 忠实地回顾细胞的身份和功能仍然是一个重大挑战.
  • 了解基因调节网络对于成功的细胞工程至关重要.

研究的目的:

  • 引入CellNet,这是一个网络生物学平台,用于评估和改进工程细胞.
  • 在工程细胞中诊断异常的基因调控网络.
  • 为了确定转录调节器来增强细胞转化.

主要方法:

  • 开发和应用CellNet平台.
  • 对基因调节网络的分析,这些基因调节网络控制着细胞的身份.
  • 在细胞转化协议中预测的调节者的实验验证 (例如,B细胞转化为巨细胞,纤维细胞转化为肝细胞).

主要成果:

  • 细胞网成功地提高了B细胞转化为巨细胞的转化效率,无论是转录还是功能.
  • 细胞网在由Cdx2.2调节的转化为诱导肝细胞 (iHeps) 的纤维细胞中发现了一个意想不到的肠道程序.
  • 诱导的肝细胞在小鼠结肠中表现出长期的功能植入,这表明它们可能是内皮原生细胞.

结论:

  • 细胞网是改善直接细胞转换和确保工程细胞忠实性的宝贵工具.
  • 该平台可以揭示先前不被赞赏的特性和工程细胞的潜在应用.
  • 这项工作促进了再生医学领域的发展,提供了一种增强细胞工程和发现新细胞功能的方法.