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对LGR4-RSPO2-ZNRF3复合体的结构洞察,这些复合体调节WNT/β-catenin信号传输
Lu Wang1, Fangzheng Hu1, Qianqian Cui1
1State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
Nature communications
|January 3, 2025
概括
LGR4蛋白质含量决定了ZNRF3的组合和构成,调节了WNT/β-catenin信号传递. 这种结构性理解对于开发针对Wnt驱动癌症的药物至关重要.
科学领域:
- 生物化学和结构生物学.
- 细胞信号通路是细胞信号通路.
- 癌症研究 癌症研究
背景情况:
- WNT/β-catenin信号传递对于发育和癌症至关重要.
- ZNRF3/RNF43蛋白通过无处化来调节这种通路.
- RSPO蛋白通过结合LGR4-6和ZNRF3/RNF43.3来增强WNT信号传递.
研究的目的:
- 阐明LGR4,RSPO2和ZNRF3组件的结构架构.
- 了解不同固体几何学和排列如何影响ZNRF3形状和WNT信号传递.
- 为针对Wnt驱动的癌症提供结构性基础.
主要方法:
- 对多个LGR4,RSPO2和ZNRF3组装结构的分析.
- 描述这些复合体内的不同固体几何学和安排.
- 研究LGR4含量对ZNRF3形状的影响.
主要成果:
- LGR4和RSPO2捕获了不同的ZNRF3状态.
- 一个2:2:2的LGR4-RSPO2-ZNRF3复合体通过向内开放的跨膜螺旋体稳定非活性ZNRF3,促进内细胞分裂.
- 一个LGR4复合体稳定了活跃的,二维的ZNRF3,具有卷曲-卷曲的跨膜螺旋形状.
结论:
- LGR4 含量介导多种组合,诱导 ZNRF3.3 的结构变化.
- 这些结构洞察力揭示了调节WNT/β-catenin信号传递的机制.
- 这些发现为开发抗Wnt驱动癌症药物的结构性基础提供了基础.
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