双重金属输送器1 (Dmt1) 的铁反应元件控制隙介导细胞命运
Judith Hounjet1, Arjan J Groot1, Jolanda P Piepers1
1Department of Radiation Oncology (Maastro), GROW School for Oncology, Maastricht University Medical Centre+, Maastricht, The Netherlands.
双元金属载体1 (Dmt1) 异形作为二元开关,控制痕信号和细胞命运决定. Dmt1调节了正常和癌细胞中的Notch激活,分化和干细胞维护.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
背景情况:
- 切口受体激活对于基因转录和细胞命运至关重要.
- 诺奇的γ-分泌酶裂变是必要的,但不足以激活,需要囊泡贩运.
- 金属传送器在Notch信号传输中的作用在很大程度上仍未被探索.
研究的目的:
- 为了识别超出γ-secretase的Notch信号的新型调节者.
- 为了调查二元金属载体1 (Dmt1) 在Notch路径中的作用.
- 阐明Dmt1在细胞命运决定中的异型特异性功能.
主要方法:
- 使用Dmt1缺乏细胞和异形特异性沉默的细胞测试.
- 对内解体体贩运和功能进行分析.
- 使用细胞系,肠道有机体和结直肠癌模型.
- 对Dmt1表达与Notch和Wnt信号的相关性分析.
主要成果:
- Dmt1 是一个新的和重要的调节器的Notch信号传输.
- 缺少Dmt1会损害痕信号和内解酶体贩运.
- Dmt1异型 (Dmt1-ire 和 Dmt1+ire) 对 Notch 激活和细胞命运有相反的影响.
- Dmt1-ire的损失抑制了Notch并促进了分化;Dmt1+ire的损失激活了Notch并维持了干系祖先的命运.
- 在癌症模型中,Dmt1异型表达与Notch/Wnt信号相关.
结论:
- Dmt1异型体作为控制细胞命运决策的二进制开关.
- Dmt1在调节干细胞原始细胞的维持和分化方面发挥着至关重要的作用.
- 针对Dmt1异型,为由Notch信号驱动的癌症提供了潜在的治疗策略.
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