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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
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相关实验视频

Updated: Sep 12, 2025

Studying Age-dependent Genomic Instability using the S. cerevisiae Chronological Lifespan Model
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EnsembleAge:通过多时钟框架增强表观遗传年龄评估.

Amin Haghani1,2, Ake T Lu3,4, Qi Yan4

  • 1Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA. ahaghani@altoslabs.com.

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|August 6, 2025
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概括

EnsembleAge是一套新的表观遗传时钟,它提供了更强大,更一致的老化预测. 该工具增强了针对物种间生物衰老的干预措施的识别和验证.

关键词:
衰老的生物标志物衰老的生物标志物生物年龄 生物年龄通过DNA甲基化.结合一个年龄组合基因表观表观表观时间表.健康的跨度健康的跨度生命周期干预措施 生命周期干预甲基标尺数据集 甲基标尺数据集鼠标模型 鼠标模型复兴 复兴 复兴 复兴压力反应应对压力.

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科学领域:

  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 衰老研究研究 衰老研究
  • 生物信息学是一种生物信息学.

背景情况:

  • 对于老鼠而言,现有的表观遗传钟缺乏稳定性,从而产生不一致的衰老预测.
  • 这种不一致性阻碍了对影响生物衰老的干预措施的可靠评估.

研究的目的:

  • 开发一套更强大的表观遗传钟,用于准确评估衰老.
  • 改进促进衰老和再生干预措施的检测和验证.
  • 为了实现转化研究的跨物种衰老分析.

主要方法:

  • 开发了EnsembleAge,这是一个基于集体的表观遗传时钟套件.
  • 来自多个受惩罚模型的综合预测,使用来自各种组织的200多个扰动实验的数据.
  • 引入 EnsembleAge 人类鼠标用于跨物种分析.

主要成果:

  • 在识别衰老干预方面,EnsembleAge在现有时钟上表现出了优异的表现.
  • 时钟套件在衰老预测中显示出增强的稳定性和一致性.
  • EnsembleAge HumanMouse通过使老鼠与人类的老龄化比较,促进了翻译研究.

结论:

  • EnsembleAge为老龄化研究提供了一个强大而可靠的工具.
  • 开发的时钟可以有效地识别和验证调节生物衰老的干预措施.
  • EnsembleAge HumanMouse促进了跨物种的衰老研究及其转化为人类研究.