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相关概念视频

Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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Replicative Cell Senescence02:15

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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...
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Non-LTR Retrotransposons03:18

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As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
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RepliChrom:可解释的机器学习使用DNA复制时间预测与癌症相关的增强剂-促进剂相互作用

Fuying Dao1,2, Benjamin Lebeau2, Crystal Chia Yin Ling2

  • 1Department of Clinical Laboratory, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Life Science and Technology University of Electronic Science and Technology of China Chengdu China.

iMeta
|August 27, 2025
PubMed
概括

机器学习模型RepliChrom使用DNA复制时间预测基因调节相互作用. 它揭示了白血病中的癌症特异性染色质模式, 揭示了正常和患病基因组中的基因调节.

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科学领域:

  • 基因组学
  • 计算生物学
  • 表观遗传学

背景情况:

  • 增强剂和促进剂的相互作用对基因调节至关重要.
  • DNA复制时间影响基因组组织和基因表达.
  • 由于复杂的监管网络, 预测这些相互作用是具有挑战性的.

研究的目的:

  • 开发可解释的机器学习模型RepliChrom,用于预测增强剂-促进剂相互作用.
  • 将DNA复制时间与染色体相互作用数据整合起来.
  • 在正常和癌症状态, 特别是白血病中发现基因调节的新见解.

主要方法:

  • 开发了一个可解释的机器学习模型RepliChrom.
  • 来自多种细胞类型的综合DNA复制时间数据.
  • 综合复制时间与不同实验平台的染色体相互作用数据.

主要成果:

  • RepliChrom可以准确地预测增强剂和促进剂的相互作用.
  • 识别了促进区域信号作为基因调节的关键驱动因素.
  • 在白血病中发现癌症特异性染色质模式,将复制时间与疾病联系起来.

结论:

  • RepliChrom提供了一个强大的工具来预测增强剂-促进剂相互作用.
  • 复制时间在塑造长距离基因调节中起着重要作用.
  • 该模型提供了关于白血病发病和潜在治疗点的机制性见解.