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相关概念视频

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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
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相关实验视频

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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
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线粒体基因编辑技术的研究进展.

Yichen Wang1,2, Ying Wang3,4, Yu Chen3,4

  • 1College of Life Sciences, Zhejiang University, Hangzhou 310058, China. 22107015@zju.edu.cn.

Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences
|August 29, 2023
PubMed
概括
此摘要是机器生成的。

线粒体DNA (mtDNA) 编辑提供了新的遗传疾病治疗方法. 基于核酸的CRISPR系统显示出mtDNA编辑的前景,克服了蛋白质识别方法的局限性.

关键词:
克里斯普尔是什么意思?克里斯普尔是什么意思?基因编辑 基因编辑线粒体中的线粒体.核酸输送核酸的交付方式审查 审查 审查 审查

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科学领域:

  • 线粒体生物学和遗传疾病治疗学.

背景情况:

  • 线粒体DNA (mtDNA) 突变会导致各种遗传疾病.
  • 目前的蛋白质识别mtDNA编辑技术 (例如,ZFN,TALEN,基编辑) 在复杂的序列设计中面临挑战,限制了广泛使用.
  • 基于CRISPR的系统为mtDNA编辑提供了更简单的核酸识别.

研究的目的:

  • 根据识别元素,审查和分类当前的线粒体基因编辑技术.
  • 讨论mtDNA编辑的原则,发展和未来前景.
  • 突出基于核酸识别的mtDNA编辑的潜力.

主要方法:

  • 根据识别元素分类mtDNA编辑技术 (蛋白质与核酸).
  • 对内源性和外源性线粒体进口通路的进展进行审查.
  • 分析与线粒体基因编辑相关的DNA修复机制.

主要成果:

  • 蛋白质识别mtDNA编辑技术在序列设计复杂性方面存在局限性.
  • 对于mtDNA编辑来说,CRISPR系统在设计和修改的方便性方面具有优势.
  • 了解线粒体进口和DNA修复途径的进展支持将核酸输送到线粒体的可行性.

结论:

  • 基于核酸识别的mtDNA编辑,特别是CRISPR,具有显著的治疗潜力.
  • 克服交付挑战是实现基于核酸的mtDNA编辑应用的关键.
  • 对线粒体通路的持续研究将推动mtDNA基因治疗领域的发展.