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相关概念视频

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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相关实验视频

Updated: Jun 18, 2025

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay
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使用交换激活和转差差异化的RNA变体评估.

Emmylou C Nicolas-Martinez1, Olivia Robinson1, Christian Pflueger2

  • 1The Robinson Research Institute, University of Adelaide, Adelaide, SA 5005, Australia; School of Biomedicine, University of Adelaide, Adelaide, SA 5005, Australia.

American journal of human genetics
|July 31, 2024
PubMed
概括
此摘要是机器生成的。

研究人员开发了新的方法来激活细胞中的"沉默"孟德尔基因 (SMGs),使RNA研究能够用于变异分类和精确医学. 这些技术克服了研究在可访问组织中表达低的基因的局限性.

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Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA
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Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay
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Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA
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科学领域:

  • 基因组学就是基因组学.
  • 分子生物学分子生物学
  • 遗传医学是一种遗传医学.

背景情况:

  • 了解拼接和无意义变体对RNA的影响对于变体分类和精准医学至关重要.
  • 使用临床可访问组织 (CATs) 的RNA研究是关键的,但由于1436个门德尔病基因 (SMG) 的疾病基因表达不足而受到限制.
  • 神经系统疾病占这些默默的门德尔基因 (SMG) 的最大比例 (36%).

研究的目的:

  • 开发和验证诱导人类皮肤纤维细胞 (HDF) 中默默的门德尔基因 (SMGs) 表达的方法.
  • 为了改善变种分类和精确医学,使基于RNA的变种对SMG的影响进行基于RNA的调查.
  • 将这些功能性基因组解决方案应用于研究特定的与疾病相关的基因 (USH2A,SCN1A,DMD,PAK3).

主要方法:

  • 基于CRISPR激活的基因交换激活以诱导SMG表达.
  • 纤维细胞到神经元的转差,以促进SMG表达.
  • 开发一个高度多重化的交易激活系统和RNA测序 (短读和长读) 的应用.

主要成果:

  • 多重交换激活系统在HDF中诱导了20/20 (100%) 测试SMG的表达 (6到90,000倍的诱导).
  • HDFs对神经元的转差导致了神经学上涉及的SMG的193/516 (37.4%) 的表达.
  • 诱导的SMG表达大小和异型多样性与临床相关组织相比较.

结论:

  • 交易激活和转差是快速,可扩展的功能基因组解决方案,用于调查SMG变体.
  • 这些方法克服了基于RNA的变异影响研究中的障碍,特别是对于在可访问组织中表达低的基因.
  • 这些方法促进了变体分类,并提高了精准医学干预措施的适用性.