在Trp53;p16缺乏的小鼠中NRF2激活驱动口腔状细胞癌
Samera H Hamad1,2,3, Rani S Sellers1,4, Nathan Wamsley5
1Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina.
构成性激活NRF2 (NFE2L2) 转录因子驱动口腔状细胞癌 (OSCC) 在缺乏p53和p16瘤抑制剂的小鼠中. 这种新型号模仿了人类的HNSCC基因,有助于OSCC的研究.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 异常激活NRF2 (核因子红色素2相关因子2) 转录因子在头部和部状细胞癌 (HNSCC) 中很常见.
- 单独激活NRF2不会导致癌症,但当与瘤基因结合时,会促进瘤的启动和进展.
- 人类HNSCC中经常观察到瘤抑制基因p16INK4A和p53的损失.
研究的目的:
- 调查NRF2在HNSCC中p16和p53损失的背景下具有瘤性作用.
- 开发一种新的,人类相关的小鼠模型,用于口腔状细胞癌 (OSCC).
主要方法:
- 在小鼠 (CP小鼠) 中删除p16INK4A和p53瘤抑制基因.
- 在CP小鼠 (CPN小鼠) 中引入一个构成性活跃的NRF2E79Q突变物.
- 胰腺病理学分析食道,口腔,前胃和口腔瘤的发展.
主要成果:
- CPN小鼠在口腔中发生了状细胞增生,发育不良和OSCC.
- 带有野生型NRF2的CP小鼠没有发展口腔病变.
- 无论是CP和CPN小鼠都发展出腹部瘤和癌瘤.
- 在p53和p16损失的背景下,NRF2激活驱动OSCC.
结论:
- 当p53和p16瘤抑制剂丢失时,NRF2作为驱动OSCC的瘤基因起作用.
- CPN小鼠为研究OSCC启动,进展和治疗反应提供了一个新的,基因相关的模型.
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