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相关概念视频

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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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.
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Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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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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LEF1异型调节细胞衰老和衰老.

Minxue Jia1,2, Khaled Sayed1,3, Maria G Kapetanaki1,4

  • 1Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.

Aging cell
|November 14, 2023
PubMed
概括
此摘要是机器生成的。

淋巴细胞增强剂结合因子1 (LEF1) 被确定为肺衰老和细胞衰老的关键调节者. 不同的LEF1异型表达对衰老至关重要,影响与年龄相关的肺部疾病.

关键词:
在IPF中,IPF是IPF.在LEF1中,我们可以使用LEF1衰老的衰老 衰老的衰老细胞衰老 细胞衰老肺 肺 肺 肺 肺 肺 肺 肺 肺

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科学领域:

  • 老年学是一门学科.
  • 分子生物学分子生物学
  • 免疫学 免疫学 免疫学

背景情况:

  • 细胞衰老是衰老和与年龄有关的疾病的关键机制.
  • 高通量数据和分析算法有助于识别疾病驱动路径.
  • 了解肺衰老需要检查免疫细胞中的转录调节.

研究的目的:

  • 为了确定肺衰老的关键调节者.
  • 分析人类和小鼠肺部免疫细胞中与年龄相关的转录变化.
  • 研究淋巴细胞增强剂结合因子1 (LEF1) 在衰老和衰老中的作用.

主要方法:

  • 从老年和年轻的人类和小鼠肺部免疫细胞 (巨细胞,T细胞,B细胞) 的转录特征进行比较分析.
  • 在细胞培养试验和人类肺样本中的验证.
  • 检查LEF1异形表达及其在细胞衰老中的作用.
  • 从异形性肺纤维化患者的肺组织中分析LEF1.

主要成果:

  • 淋巴细胞增强剂结合因子1 (LEF1) 被确定为跨多种细胞类型,组织和物种的年龄相关基因表达调节剂.
  • 长短LEF1异型的差异表达被发现是细胞衰老中的关键调节机制.
  • 在患有异常性肺纤维化患者的肺组织中,LEF1显示出显著的调节障碍,这是一种与衰老相关的与年龄相关的疾病.

结论:

  • 在老化过程中,LEF1是一个重要的因素.
  • 在人类和小鼠中,LEF1异型的差异调节与细胞衰老有关.
  • LEF1失调与与年龄相关的肺病理,如异常性肺纤维化有关.