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相关概念视频

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...
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相关实验视频

Updated: Jan 18, 2026

Efficient Generation and Editing of Feeder-free IPSCs from Human Pancreatic Cells Using the CRISPR-Cas9 System
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顺序的因子传递使得在临床级的iPS细胞中实现通用基因编辑的高效工作流.

Thomas Berger1, Elitsa Borisova1, Anna Gamerschlag1

  • 1Catalent Duesseldorf GmbH, Berghausener Straße 98, 40764, Langenfeld, Germany.

Scientific reports
|September 12, 2025
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概括

我们优化了CRISPR基因编辑用于人类诱导多能干细胞 (iPSCs),为细胞治疗应用实现了超过30%的敲门效率. 这种无病毒的方法提高了治疗用途的安全性和免疫兼容性.

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相关实验视频

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科学领域:

  • 干细胞生物学 干细胞生物学
  • 基因编辑技术的技术
  • 细胞疗法细胞疗法

背景情况:

  • 人类诱导的多能干细胞 (iPSCs) 对细胞治疗有很大的前景.
  • 克里斯普尔技术可以在iPSC中进行基因修改,以增强治疗功能.
  • 目前对iPSCs的基因操纵,特别是敲进,是低效的,可能与良好制造实践 (GMP) 相冲突.

研究的目的:

  • 优化基于CRISPR的基因编辑程序,以在iPSC中有效地产生内置基因.
  • 开发一种符合GMP的,无病毒的方法来对iPSC进行基因操纵.
  • 创建和验证具有增强免疫兼容性和安全功能的iPSC线.

主要方法:

  • 基于Cas9和Cas12a的核糖蛋白 (RNP) 复合物的系统优化,用于基因编辑.
  • 连续交付RNP和捐赠体等离子体,以免病毒敲进.
  • 创建和表征同卵性iPSC线条与HLA类I耗尽和可诱导的caspase-9自杀基因.

主要成果:

  • 使用优化方法实现了全长转基因的超过30%的连续效率.
  • 成功生成了缺乏HLA类I和表达安全开关的同卵性iPSC线.
  • 在GMP iPSC系列中验证了基因组完整性,差异化能力和安全开关功能.

结论:

  • 改进的基因编辑方法为iPSC修改提供了灵活和高效的平台.
  • 这种无病毒的方法克服了与当前基因编辑技术相关的GMP限制.
  • 开发的iPSC系列适用于基础研究,并有可能用于细胞治疗应用.