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相关概念视频

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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Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
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Mitochondria01:37

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Proteins: From Genes to Degradation02:11

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Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
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相关实验视频

Updated: Jun 10, 2025

Author Spotlight: Automated Lifespan Monitoring – Discovering Aging Dynamics with the Lifespan Machine
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Author Spotlight: Automated Lifespan Monitoring – Discovering Aging Dynamics with the Lifespan Machine

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从转录组学中解开衰老.

Yuanfang Huang1, Shouxuan Zhu1, Shuai Yao1

  • 1Peking-Tsinghua Center for Life Sciences, Center for Quantitative Biology (CQB), Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.

Trends in genetics : TIG
|October 18, 2024
PubMed
概括
此摘要是机器生成的。

本综述探讨了转录基因技术如何推进对衰老和寿命的研究. 它强调了关于信使RNA (mRNA),长非编码RNA (lncRNA),转移RNA (tRNA) 和微RNA (miRNA) 在衰老研究中的关键发现.

关键词:
衰老的衰老 衰老的衰老大量的RNA-seqq.单细胞转录组学 单细胞转录组学空间转录学 空间转录学翻译学 翻译学 翻译学 翻译学

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科学领域:

  • 老年学和分子生物学
  • 基因组学和转录基因组学

背景情况:

  • 衰老研究对于了解与年龄相关的疾病和促进健康长寿至关重要.
  • 转录组技术为研究高分辨率的衰老提供了新的途径.

研究的目的:

  • 审查用于衰老研究的转录基因技术的最新进展.
  • 突出关于各种RNA类型 (mRNA,lncRNA,tRNA,miRNA) 在衰老中的关键发现.
  • 讨论对未来研究和治疗策略的影响.

主要方法:

  • 关于转录学和衰老的最新科学文献的综述.
  • 分析大量RNA测序 (RNA-seq),单细胞转录组学和空间转录组学方面的突破.
  • 在衰老的背景下,调查与mRNA,lncRNA,tRNA和miRNA相关的发现.

主要成果:

  • 转录基因技术彻底改变了对衰老的研究.
  • 已经确定了与衰老相关的新生物标志物和分子途径.
  • 不同的RNA类型在衰老过程中起着重要的作用.

结论:

  • 转录组学的进步为衰老研究提供了强大的工具.
  • 了解RNA动态是开发治疗年龄相关疾病的关键.
  • 未来的研究可以利用这些技术来加强长寿研究.