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相关概念视频

What is Gene Expression?01:42

What is Gene Expression?

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Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
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What is Gene Expression?01:36

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A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
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Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Chromatin Position Affects Gene Expression02:35

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Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences  access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area. 
Topologically Associated Domains (TADs)
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mRNA Stability and Gene Expression02:51

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The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
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基因表达在Pachyrhynchus Weevils的尺度发展过程中

Yi-Chen Chen1, Yun-Ru Chen1,2, Ace Kevin S Amarga3,4

  • 1Department of Entomology, National Taiwan University, Taipei, Taiwan.

Journal of experimental zoology. Part B, Molecular and developmental evolution
|January 21, 2026
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概括

研究人员在Pachyrhynchus虫中确定了调节尺度颜色的关键基因. 这些基因,包括C型讲蛋白和黄色家族蛋白质,表现出特定物种的表达,为进化色彩模式提供了洞察力.

关键词:
没有NGS,没有NGS.在RNA-seqq.qPCRR 是一个很好的方法.结构色彩 结构色彩转录组分析转录组分析

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科学领域:

  • * 昆虫学和进化生物学
  • * 结构色彩和遗传学

背景情况:

  • * 松鼠虫 (Pachyrhynchus weevils) 由于3D光子结构而表现出充满活力的,有图案的色彩.
  • * 这些颜色在性选择和异性质中起着至关重要的作用.
  • *这些虫的色的遗传基础在很大程度上是未知的.

研究的目的:

  • * 为了识别帕奇林克斯虫中负责色的基因.
  • * 在的发展过程中调查时间基因表达模式.
  • * 为了比较不同帕奇林丘斯物种的基因表达.

主要方法:

  • *在出现后6小时和24小时对P. nobilis进行了RNA测序 (RNA-seq),比较了状和状组织.
  • * 量化PCR (qPCR) 用于对P. nobilis,P. sarcitis和P. orbifer.进行验证.
  • *进行了差异基因表达分析和KEGG通路分析.

主要成果:

  • *分别在6h和24h确定了3172和2890个差异表达基因 (DEG),随着时间的推移,上调会增加.
  • * 确定了参与发展的候选基因 (C型讲蛋白,皮质蛋白,黄色家族蛋白).
  • * 观察到C型莱克和刺样蛋白质基因的特定物种表达模式; Wnt和信号通路表现出差异性的活性.

结论:

  • * 特定的基因,包括C型讲蛋白和黄色家族蛋白质,很可能参与调节Pachyrhynchus虫的尺度颜色发育.
  • *与颜色调节相关的基因表达模式在物种之间和随着时间的推移而显著变化.
  • *这些发现为了解这些昆虫复杂结构色彩背后的遗传机制提供了基础.