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相关概念视频

Telomeres and Telomerase02:41

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In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded...
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Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
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Chromosome Structure02:40

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A functional eukaryotic chromosome must contain three elements: a centromere, telomeres, and numerous origins of replication.
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相关实验视频

Updated: Feb 11, 2026

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
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端粒和端粒酶的使用

Julia Promisel Cooper1, Eros Lazzerini Denchi2, Joachim Lingner3

  • 1Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado 80045, USA julia.p.cooper@cuanschutz.edu eros.lazzerinidenchi@nih.gov joachim.lingner@epfl.ch hpickett@cmri.org.au.

Cold Spring Harbor perspectives in biology
|February 9, 2026
PubMed
概括
此摘要是机器生成的。

端粒是基因组稳定,衰老和疾病的关键. 通过端粒酶和替代端粒延长 (ALT) 了解它们的维护,为再生和与年龄相关的衰退提供了新的治疗途径.

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科学领域:

  • 分子生物学分子生物学
  • 遗传学 遗传学 是一个
  • 细胞生物学 细胞生物学

背景情况:

  • 端粒对基因组稳定性,衰老和疾病易感性至关重要.
  • 最近的进展揭示了端粒复制,保护和修复机制.
  • 端粒功能影响人类寿命,组织更新和癌症演变.

研究的目的:

  • 为了提供对端粒生物学的综合概述.
  • 探索端粒架构,复制和维护途径.
  • 突出基于端粒研究的新疗法策略.

主要方法:

  • 分子生物学技术分子生物学技术.
  • 结构生物学分析结构生物学分析.
  • 有机和临床研究的整合.

主要成果:

  • 端粒动态是基因组不稳定性的核心.
  • 端粒维护包括端粒酶和替代端粒延长 (ALT).
  • 端粒研究正在迅速推进我们对衰老和疾病的理解.

结论:

  • 端粒生物学是一个快速发展的领域,具有重大影响.
  • 了解端粒可以重塑人们对再生,衰老和疾病的看法.
  • 端粒研究为新的治疗干预提供了基础.