通过DUSP4-ERK通路,DOCK1缺陷会通过DUSP4-ERK途径扰乱热囊细胞功能和妊娠结果
Yichi Xu1,2,3, Xiaorui Liu1,2,3, Weihong Zeng1,2,3
1The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Life science alliance
|November 15, 2023
概括
在怀孕期间DOCK1表达的降低与反复发生的自发流产有关. 这种蛋白质通过控制DUSP4和ERK信号来调节热囊细胞的入侵,为妊娠并发症提供了新的治疗点.
科学领域:
- 生殖生物学 生殖生物学
- 细胞信号传输 细胞信号传输
- 发展生物学 发展生物学
背景情况:
- 异常的热囊细胞功能是导致不良妊娠结果的关键因素,如重复性自发流产,子宫前和早产.
- 调节热囊细胞功能,特别是侵袭的精确分子机制仍然不完全理解.
研究的目的:
- 调查DOCK1在调节外性热囊细胞 (EVT) 功能中的作用.
- 阐明DOCK1通过哪个分子途径影响热囊细胞入侵及其在反复自发流产中的含义.
主要方法:
- 对复发性自发性流产患者的胎盘小体中DOCK1表达的分析.
- 在体外研究评估DOCK1对EVT侵袭性质和DUSP4无处不在性的影响.
- 研究DOCK1-DUSP4-ERK信号轴及其通过E3结合酶HUWE1.1的调节.
- 在流产的小鼠模型中使用DOCK1抑制剂 (TBOPP) 的体内验证.
主要成果:
- 在复发性自发性流产的患者的胎盘小体中,DOCK1的表达显著下降.
- DOCK1 缺乏导致 DUSP4 积累,通过抑制其无处不在的降解,随后使 ERK 信号通路失活.
- 这种无活化损害了EVT迁移和入侵,而DOCK1抑制在体内通过DUSP4/ERK通路在小鼠中诱导流产.
结论:
- 通过DUSP4-ERK信号通路,DOCK1在调节EVT功能,特别是入侵方面发挥着至关重要的作用.
- 调节错误的DOCK1-DUSP4-ERK轴有助于 trofhoblast 功能障碍和不利的妊娠结果.
- DOCK1成为潜在的治疗点,用于管理与热囊细胞功能障碍相关的妊娠并发症.
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