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相关概念视频

What is Gene Expression?01:42

What is Gene Expression?

195.1K
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

What is Gene Expression?

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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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Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Chromatin Position Affects Gene Expression02:35

Chromatin Position Affects Gene Expression

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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)
The 3-dimensional positioning of chromatin in the nucleus influences the...
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mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

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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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相关实验视频

Updated: Jan 24, 2026

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells
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外向行为干预改善了免疫基因表达.

Ramona L Martinez1, Sonja Lyubomirsky1, Steve W Cole2

  • 1Department of Psychology, University of California, Riverside, 900 University Ave., Riverside, CA 92521, United States.

Brain, behavior, and immunity
|January 22, 2026
PubMed
概括
此摘要是机器生成的。

促进外向行为可以通过减少对逆境的保存转录反应 (CTRA) 基因表达来改善免疫功能. 这种与减少孤独感相关的效应并没有长期持续.

关键词:
健康心理学健康心理学干预 干预 干预孤独感 孤独感 孤独感人格特征 个性特征 人格特征积极心理学是积极的心理学.心理神经免疫学 心理神经免疫学社会连接 社交联系幸福是一种幸福.

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Differentiating Functional Roles of Gene Expression from Immune and Non-immune Cells in Mouse Colitis by Bone Marrow Transplantation
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相关实验视频

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Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells
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Investigating Drivers of Antireward in Addiction Behavior with Anatomically Specific Single-Cell Gene Expression Methods
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Differentiating Functional Roles of Gene Expression from Immune and Non-immune Cells in Mouse Colitis by Bone Marrow Transplantation
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科学领域:

  • 心理神经免疫学 心理神经免疫学
  • 行为干预研究行为干预研究.
  • 基因表达分析 基因表达分析

背景情况:

  • 社会联系对于心理健康和免疫功能至关重要.
  • 对逆境的保存转录反应 (CTRA) 是一种与炎症和减少抗病毒反应相关的基因表达程序.
  • CTRA与社会隔离,孤独和排斥有关.

研究的目的:

  • 调查一种促进外向行为的行为干预是否可以减少CTRA基因表达.
  • 检查心理结果 (如孤独) 在调解干预对CTRA的影响中的作用.

主要方法:

  • 一个为期8周的随机对照试验,涉及119名大学生.
  • 参与者被分配到一个外向状态 (表现得更外向) 或一个控制状态 (跟踪日常活动).
  • 基因表达 (CTRA) 和心理结果在基线,干预后和随访时被测量.

主要成果:

  • 全基因组分析显示,与对照组相比,外向组的CTRA特征基因调节减少更大.
  • 这些减少的部分原因是自我报告的孤独感减少.
  • 干预对CTRA基因调节的影响在1个月的随访中没有持续.

结论:

  • 参与外向行为可能会增强社交联系并改善免疫调节.
  • 需要进一步的研究来证实这些发现,并制定更持久效应的策略.