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对比的转录基因分析显示,在非转移的低级别形瘤中,表皮质-介质细胞过渡程序的激活
Elise Pretzsch1, Jens Neumann2, Hanno Nieß3
1Department of General, Visceral, and Transplant Surgery, Ludwig-Maximilians-University Munich, Munich, Germany; German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, partner site Munich, Germany.
Pathology, research and practice
|January 17, 2024
概括
皮质-介质细胞转变 (EMT) 在非转移性瘤中活跃,与结直肠癌不同. 这表明,单独的EMT并不能保证转移,强调需要进一步研究癌症传播机制.
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:
- 结肠直肠癌 (CRC) 转移涉及表皮细胞-介质细胞过渡 (EMT),血管生成和细胞外矩阵 (ECM) 相互作用.
- 与CRC相比,尾的低级粘膜性瘤 (LAMN) 和低级膜瘤 (lgPMP) 的转移潜力有限.
研究的目的:
- 为了比较LAMN,lgPMP和CRC的分子概况和途径分析,以了解转移性差异.
- 确定影响这些尾和结直肠瘤转移行为的关键分子区别.
主要方法:
- 在LAMN,lgPMP和CRC病例上使用Poly(A) RNA测序进行转录组分析.
- 生物信息和统计分析包括差异性基因表达,聚类,主要成分分析和基因组丰富分析.
主要成果:
- 一个28基因签名区分了LAMN,lgPMP和CRC.
- 在EMT,ECM相互作用和血管生成途径的调节方面存在差异.
- 意想不到的是,EMT基因组与LAMN和CRC相比,在lgPMP中显著丰富,EMT标记物的表达发生变化 (Vimentin,TWIST1,N-Cadherin,E-Cadherin).
- 与EMT和转移相关的MMP1和MMP3水平在CRC中高于lgPMP.
结论:
- 瘤生物行为和中肠恶性瘤中的转移模式与不同的基因表达特征相关.
- 在非转移的lgPMP中观察到强烈的EMT程序激活,挑战了EMT和血液传播之间的直接联系.
- 进一步的途径分析对于理解转移机制和开发向治疗至关重要.
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