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相关概念视频

RNA Splicing01:32

RNA Splicing

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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...
Leaky Scanning02:28

Leaky Scanning

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 stands for...

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相关实验视频

Updated: Jun 17, 2026

An Orthotopic Mouse Model of Anaplastic Thyroid Carcinoma
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根据等级的甲状腺髓癌的转录组差异.

Ignacio Ruz-Caracuel1,2, Tamara Caniego-Casas3,4, Teresa Alonso-Gordoa5

  • 1Pathology Department, Hospital Universitario Ramón y Cajal, IRYCIS, 28034, Madrid, Spain. Ignacio.ruz@salud.madrid.org.

Endocrine pathology
|July 3, 2024
PubMed
概括

甲状腺髓性癌 (MTC) 的新分级系统可以识别高度瘤. 在MTC中DLL3的过度表达与侵袭性疾病和低生存率相关,表明其作为预后生物标志物的潜力.

关键词:
在 DLL3 中,你会看到 DLL3 文件.内分泌病理学 内分泌病理学骨髓甲状腺癌是一种甲状腺癌.神经内分泌新生病是神经内分泌新生病.甲状腺是什么?甲状腺是什么?文字转录 文字转录 文字转录

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科学领域:

  • 在瘤学瘤学.
  • 分子生物学分子生物学
  • 基因组学就是基因组学.

背景情况:

  • 骨髓甲状腺癌 (MTC) 是一种罕见的神经内分泌瘤,缺乏标准化的组织学分级系统.
  • 最近基于增殖和亡的双层分级系统显示出预后价值.
  • 了解高级和低级MTC之间的分子差异对于改善患者的治疗结果至关重要.

研究的目的:

  • 识别与高度髓性甲状腺癌相关的分子标记物.
  • 研究特定基因表达模式在MTC预后中的作用.
  • 评估DLL3作为攻击性MTC的潜在生物标志物.

主要方法:

  • 在21个MTC样本上使用NanoString瘤信号360面板进行转录基因分析.
  • 在30个MTC样本中对基因表达的定量实时PCR (qRT-PCR) 验证.
  • 免疫组织化学评估DLL3蛋白表达并与生存数据相关联.

主要成果:

  • 高度的MTCs显示了包括DLL3,SOX2和FOXM1.1在内的基因的显著上调.
  • 不同的基因表达途径涉及DNA损伤修复,细胞循环和亡.
  • 在MTC患者中,DLL3过度表达与较低的无病和整体存活率显著相关.

结论:

  • 高度MTC中的DLL3和SOX2表达特征类似于小细胞肺癌的特征.
  • DLL3过度表达是脑髓甲状腺癌中预后不佳和侵袭性疾病的重要预测因素.
  • 作为MTC管理的预后生物标志物,DLL3值得进一步研究.