纤维素构成和转胺酶2交叉连接 协同调节卵巢癌细胞粘附在ECM模拟结构中的卵巢癌细胞粘附
bioRxiv : the preprint server for biology
|June 4, 2025
概括
卵巢癌的细胞外基质变化或转移促进了瘤细胞的粘附. 具体来说,增加的原I和细胞纤维素,通过转谷氨酶2交叉连接,增强高度血清性卵巢癌细胞粘附.
科学领域:
- 生物化学 生物化学
- 在瘤学瘤学.
- 生物材料科学 生物材料科学
背景情况:
- 细胞外基质 (ECM) 是瘤进展的组成部分.
- 高度血清性卵巢癌 (HGSOC) 中的口腔转移显示出改变的ECM组成,包括高原I和细胞纤维素 (cFN).
- 转胺酶2 (TG2) 在这些转移的细胞外空间上升调节和酶活跃.
研究的目的:
- 研究ECM变化的影响,特别是原I,cFN和TG2介导的交叉链接,对HGSOC细胞粘附的影响.
- 开发和使用模拟亲转移性微环境的ECM构造.
- 了解ECM纤维直径和组成在HGSOC细胞粘附中的作用.
主要方法:
- 从HGSOC患者的正常和转移性体质中分析原I和cFN水平和纤维厚度.
- 在体内转移中量化TG2活性.
- 开发TG2交联ECM水凝结构 (原I,cFN,血纤维蛋白) 来研究HGSOC细胞粘附.
- 对HGSOC细胞粘附的评估,以应对不同的ECM组成和纤维厚度.
主要成果:
- HGSOC转移显示显著增加的原I和cFN水平与更厚的原I纤维相比正常的体质.
- 发现TG2在体内转移的细胞外环境中具有酶活性.
- 通过TG2介导的原I/cFN水凝的交叉链接显著增强了HGSOC细胞粘附,而原I/血纤维素的交叉链接没有影响.
- HGSOC细胞粘附性取决于连接体身份和纤维直径,cFN比单独的pFN或原更能促进粘附性.
- 通过改变凝温度来增加纤维厚度,当凝成分保持不变时,增强HGSOC细胞粘附性.
结论:
- 暗示器中的ECM修饰,包括增加的原I,cFN和TG2活性,创造了一个支持HGSOC细胞粘附和潜在的瘤进展的微环境.
- 像cFN这样的特定ECM组件的TG2介导交叉链接是推动转移部位增强细胞粘附的关键机制.
- ECM纤维直径和组成是HGSOC细胞粘附的关键决定因素,为治疗干预提供了潜在的目标.
- 这项研究为设计调节细胞粘附的生物材料提供了洞察力,用于癌症研究和治疗策略.
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