转移前骨的调节:由骨的前列腺癌细胞外囊泡介导的分子变化
Thomas J Brown1, Catrin S Rutland1, Katie K Choi2
1Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, United Kingdom.
Frontiers in cell and developmental biology
|March 8, 2024
概括
前列腺癌 (PCa) 细胞外囊泡 (EVs) 准骨和淋巴结,导致分子变化,破坏骨平衡. 这些早期的分子变化,在组织学上是不可见的,表明骨细胞在PCa骨转移中发挥作用.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 生物化学 生化学
背景情况:
- 前列腺癌 (PCa) 经常转移到骨,治疗选择有限.
- 细胞外囊泡 (EVs) 调解细胞间通信,并与癌症转移有关.
- 以前的研究表明PCa EVs会影响骨质母细胞,但早期骨微环境的变化仍然不清楚.
研究的目的:
- 在活体中研究重复性前列腺癌细胞外囊泡 (PCa EV) 暴露对骨微环境的早期分子影响.
- 确定PCa EVs对骨和淋巴结的定位能力和影响.
- 确定参与早期PCa骨转移的分子途径和细胞类型.
主要方法:
- 用光标记的PCa EVs (PC3MLuc2a) 在4周内静脉注射给小鼠.
- 采用了体内成像,组织学分析和基因表达分析.
- 在人骨质母细胞的体外研究和与骨质细胞基因特征的比较进行了.
主要成果:
- 发现PCa EVs在骨和淋巴结中积累.
- 在骨中观察到显著的分子变化,影响了像帕克西林,雌激素受体,RHOA, рибонуклеотид редуктаза和ERK/MAPK等途径.
- 在受影响的基因和已知的骨细胞基因特征之间发现了大量的重叠 (52.2%),没有检测到组织学变化.
结论:
- 重复的PCa EV暴露会诱导骨微环境中的分子变化,在前组织学阶段破坏骨平衡.
- 这些发现凸显了骨细胞在应对PCa EVs时的潜在作用.
- 了解这些早期分子事件对于开发针对PCa骨转移的向疗法至关重要.
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