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相关概念视频

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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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Commitment is the  process whereby stem cells:
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High-throughput Quantitative Real-time RT-PCR Assay for Determining Expression Profiles of Types I and III Interferon Subtypes
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干扰素羔羊受体-1异型对干细胞衍生的肝细胞中的基因表达和HBV复制有差异性的影响.

Laura A Novotny1, J Grayson Evans1, Haitao Guo2

  • 1Division of Infectious Diseases, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA.

Antiviral research
|December 9, 2023
PubMed
概括

在肝细胞中改变干扰素羔羊受体-1 (IFNLR1) 异型对羔羊IFN (IFNLs) 和乙型肝炎病毒 (HBV) 复制的反应产生差异性影响. 异形1增强了抗病毒活性,而异形2和3显示出有限的疗效.

关键词:
这就是HBV的DNA.IFNLR1 的意思是诱导了肝细胞的产生.cccDNADNA 在线阅读干扰素兰巴达是一种干扰素.

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科学领域:

  • 肝病学 肝病学是一种肝病学.
  • 免疫学 免疫学 免疫学
  • 病毒学 病毒学

背景情况:

  • 慢性乙型肝炎病毒 (HBV) 感染由于肝脏中干扰素信号不有效而持续.
  • 由干扰素兰巴受体-1 (IFNLR1) 介导的干扰素兰巴受体 (IFNL) 信号传递对于抗病毒反应至关重要.
  • 肝细胞表达多个IFNLR1异型,其在IFNL信号传递和HBV控制中的作用尚不清楚.

研究的目的:

  • 研究IFNLR1异型对肝细胞对IFNLs反应的差异性影响.
  • 确定调节IFNLR1异型表达如何影响HBV复制.

主要方法:

  • 来自诱导多能干细胞 (iHeps) 的肝细胞是用可诱导的IFNLR1异型进行的.
  • 工程化iHeps感染了HBV并接受了IFNL3的治疗.
  • 评估基因表达,HBV复制和细胞活力.

主要成果:

  • 过度表达IFNLR1异型1显著增强干扰素刺激基因 (ISG) 表达和HBV复制抑制.
  • 同样,Isoform 1还诱导了促炎性基因表达,而不会影响细胞活力.
  • IFNLR1异型2和3显示部分ISG诱导,但对HBV复制或促炎基因表达的影响很小.

结论:

  • IFNLR1异型差异调节IFNL诱导的基因表达和肝细胞中的HBV复制.
  • 向IFNLR1表达可能是增强对HBV的抗病毒反应的一种策略.