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缺氧-表观遗传轴驱动胰腺癌中的EMT
Matthias Wirth1,2,3,4, Günter Schneider1,5,6
1Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.
Cancer research
|June 4, 2024
概括
在胰腺癌中,低氧会通过改变基因组甲基化来触发上皮细胞到介质细胞的转换 (EMT). 这项研究揭示了缺氧诱导的信号如何调节H3K36me2标记,影响癌细胞的可塑性.
科学领域:
- 细胞的可塑性 细胞的可塑性
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
背景情况:
- 皮质转介质转换 (EMT) 是一个细胞过程,对发育和疾病至关重要.
- 虽然TGFβ介导的EMT已得到充分研究,但其他途径仍然不太了解.
- 胰腺管道腺癌 (PDAC) 在基底类型的亚型中表现出类似中酶体的表达程序,突出显示了EMT的作用.
研究的目的:
- 调查胰腺癌中缺氧和EMT之间的机械联系.
- 阐明缺氧诱导的信号是如何通过表观遗传修饰来整合的,特别是H3K36me2.2.
- 为了确定参与低氧驱动的EMT的关键分子参与者.
主要方法:
- 对PDAC的转录组分类.
- 缺氧诱导的信号通路的机械分析.
- 调查组织素甲基化动态 (H3K36me2) 和相关酶 (KDM2A,NSD2).
- 对氨酸-氨酸酸酶和SRC激酶家族信号的分析.
主要成果:
- 缺氧降低了H3K36me2擦拭器KDM2A的活性,并促进了H3K36me2编写器NSD2.2.的稳定.
- 缺氧减少了氨酸-氨酸酸酶的表达,导致MEK/ERK/JNK信号激活和增加NSD2的表达.
- 减少PP2Cδ表达与增加的NSD2蛋白水平相关.
结论:
- 缺氧信号与调节细胞可塑性的表观遗传机制密切相关.
- H3K36me2标记集成了缺氧诱导的信号,以促进PDAC中的EMT.
- 这项研究揭示了在胰腺癌中连接缺氧,表观遗传学和EMT的新机制.
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