一个LATS2和ALKBH5的正反循环支持它们的致癌作用
Lei Cao1, Ruohui Han2, Yingying Zhao1
1State Key Laboratory of Experimental Hematology, the Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Medical Epigenetics, Department of Cell Biology, Tianjin Medical University, Qixiangtai Road 22, Tianjin 300070, China.
细胞密度影响了ALKBH5在质母细胞瘤中的N(6) - 甲基亚丁素 (m6A) 调节. LATS2酸化ALKBH5,形成一个反循环,促进瘤生长,并建议新的抗癌策略.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 甲基氨酸 (m6A) 是一种影响生物过程的关键RNA修饰.
- 甲基脱甲酶ALKBH5与质母细胞瘤瘤发生有关,但其调节网络尚未完全理解.
研究的目的:
- 研究细胞密度在调节ALKBH5和m6A动态中的作用.
- 阐明ALKBH5受调节的机制及其对质母细胞瘤的影响.
- 为了确定质瘤治疗的潜在治疗点.
主要方法:
- 细胞密度实验以评估ALKBH5局部化和m6A水平.
- 酸化试验以确定LATS2和ALKBH5.5之间的相互作用.
- mRNA稳定性测试和质母细胞干细胞自我更新测试.
- 鼠标异种移植模型用于评估瘤进展.
- 对患者质瘤样本进行LATS2和ALKBH5酸化水平的分析.
主要成果:
- 细胞密度影响ALKBH5的亚细胞定位和m6A修饰动态.
- LATS2酸化ALKBH5,抑制其核出口并增加蛋白质的稳定性.
- 化ALKBH5去甲基化LATS2mRNA,增强其稳定性,形成一个积极的反循环.
- LATS2 枯竭抑制了结质母细胞瘤干细胞的自我更新,独立于 YAP.
- 在体内,LATS2或ALKBH5酸化缺乏会阻碍瘤的进展.
- 升高的LATS2表达和ALKBH5酸化与质瘤恶性相关.
结论:
- 确定了LATS2和ALKBH5之间的新型瘤反循环,通过非正规的Hippo路径分支影响RNA处理.
- 这种相互作用调节了质母细胞干细胞自我更新和瘤进展.
- LATS2和ALKBH5酸化代表了质瘤干预的潜在治疗点.
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