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相关概念视频

Circadian Rhythms and Gene Regulation02:19

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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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Multiplexed Analysis of Retinal Gene Expression and Chromatin Accessibility Using scRNA-Seq and scATAC-Seq
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衰老会重新编程视网膜中的节奏转录组.

Zhijie Wang1, Lifeng Chen2, Lin Li2

  • 1Department of Retina Center, Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Hangzhou, China; National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China; Eye Research Center, Hangzhou Institute of Medicine, Chinese Academy of Sciences, Eye Hospital, Wenzhou Medical University, Hangzhou, China.

Experimental eye research
|July 1, 2025
PubMed
概括
此摘要是机器生成的。

衰老显著改变视网膜的日常基因表达模式,影响免疫反应和与年龄相关的视力丧失相关的途径. 这项研究揭示了老龄化如何破坏眼睛的自然节奏.

关键词:
视网膜的老化 视网膜的老化循环节律是循环节律的节奏.一天性转录基因组基因表达 基因表达 基因表达

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科学领域:

  • 眼科医生 眼科 眼科
  • 基因组学就是基因组学.
  • 时间生物学 时间生物学

背景情况:

  • 衰老是视网膜退行性疾病的主要危险因素.
  • 衰老对视网膜日间转录特征的影响尚不清楚.
  • 由于与年龄相关的视网膜疾病的患病率越来越高,了解这些变化至关重要.

研究的目的:

  • 为了研究衰老对老鼠视网膜中日间基因表达模式的影响.
  • 识别节律性和差异性表达基因和途径的与年龄相关的变化.

主要方法:

  • 从年轻和老年小鼠的视网膜样本的高通量RNA测序,在12h:12h的光暗周期下进行.
  • 使用 edgeR.R. 的微分表达式分析.
  • 使用MetaCycle和CircaCompare软件包进行节律性和差异性节律性分析.

主要成果:

  • 鉴定了361个差异表达基因 (DEGs),这些基因在与免疫相关的途径中被丰富.
  • 衰老使节律基因的比例减少了28%,有显著的途径转移.
  • 在RNA降解和蛋白质体路径中的基因失去了节律性,而免疫和AMD相关的路径在老年视网膜中获得了节律性.

结论:

  • 衰老严重改变视网膜的节奏转录组,影响基因表达的时间和组成.
  • 这项研究通过突出衰老,日间节律和基因表达的相互作用,提供了对与年龄相关的视网膜疾病背后的分子机制的见解.