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相关概念视频

Introduction to Nuclear Reprogramming01:14

Introduction to Nuclear Reprogramming

2.3K
Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
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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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Somatic to iPS Cell Reprogramming01:29

Somatic to iPS Cell Reprogramming

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Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
2.6K
iPS Cell Differentiation01:22

iPS Cell Differentiation

3.0K
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.
3.0K
Chromatin Modification in iPS Cells01:32

Chromatin Modification in iPS Cells

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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
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Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
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Updated: Jan 18, 2026

Chemogenetic Regulation in Reprogrammed Stem Cell-derived Precursor Cells in Treating Neurodegenerative Diseases
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精确重编程-恢复功能到老化的细胞.

Arjun Jain1, Yuuki Hosokawa1, Kevin Joseph1

  • 1Retro Biosciences, San Francisco, California, USA.

Cellular reprogramming
|June 9, 2025
PubMed
概括
此摘要是机器生成的。

使用Oct4,Sox2和Klf4 (OSK) 通过腺相关病毒 (AAV) 进行有针对性的部分重编程,使衰老细胞复苏. 这种方法改善了小鼠的寿命和健康状况,提供了更安全的老化疗法替代方案.

关键词:
哈森-吉尔福德预后综合征是什么?老化的老化 衰老的老化部分重新编程部分重编程衰老细胞是老化的细胞.

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Selecting and Isolating Colonies of Human Induced Pluripotent Stem Cells Reprogrammed from Adult Fibroblasts
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Evaluation of Injury-induced Senescence and In Vivo Reprogramming in the Skeletal Muscle
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Selecting and Isolating Colonies of Human Induced Pluripotent Stem Cells Reprogrammed from Adult Fibroblasts
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科学领域:

  • 细胞生物学 细胞生物学
  • 衰老的研究研究.
  • 基因治疗是一种基因疗法.

背景情况:

  • 细胞衰老是衰老的标志,有助于与年龄有关的疾病.
  • 目前的老化疗法面临着系统性副作用的挑战.
  • 需要有针对性的干预措施,以安全地使衰老细胞复苏.

研究的目的:

  • 为了研究针对性部分重编程对细胞再生的有效性.
  • 评估由腺相关病毒 (AAV) 介导的重编程因子 (Oct4,Sox2,Klf4) 传递给衰老细胞的安全性和有效性.
  • 评估老化模型中的治疗潜力.

主要方法:

  • 使用Oct4,Sox2和Klf4 (OSK) 的部分重编程通过腺相关病毒 (AAV) 传递.
  • 向Cdkn2a阳性细胞在孕激素和自然衰老的小鼠模型中.
  • 评估寿命,炎症,组织完整性和伤口愈合.
  • 在复制性衰老和DNA损伤条件下对人类纤维细胞的验证.

主要成果:

  • 一次AAV注射改善了老年小鼠的寿命,减少了炎症,恢复了组织完整性和增强了伤口愈合.
  • 在人类纤维细胞中,Cdkn2a驱动的OSK表达减弱了与炎症相关的基因.
  • 细胞身份在复苏过程中得到维持.
  • 没有发现任何显著的不良影响,这表明它具有更安全的特征.

结论:

  • 通过AAV进行有针对性的部分重编程是复原老化的细胞的有希望的策略.
  • 这种方法表明,它有可能成为与年龄相关疾病的全身老化疗法更安全的替代方案.
  • 需要进一步的研究来探索其临床应用.