TGFβ增强了血小板-乳腺癌细胞相互作用,并促进了血小板聚合
Margherita Genitoni1, Lucia Merolle1, Agnese Razzoli1
1Transfusion Medicine Unit, Azienda USL-IRCCS di Reggio Emilia, Italy.
The FEBS journal
|October 17, 2025
概括
转化生长因子β (TGFβ) 增强了乳腺癌细胞与血小板的相互作用,促进了血小板聚合和潜在的癌症进展. 抑制整合素-αv减少了细胞与血小板的结合,而整合素-αv和胆固醇-3 抑制剂减少了聚合.
科学领域:
- 在瘤学瘤学.
- 血液学 血液学 血液学
- 细胞生物学 细胞生物学
背景情况:
- 血小板 (PLTs) 显著影响瘤进展和与癌症相关的血栓形成 (CAT).
- 转化生长因子β (TGFβ),由血小板分泌,促进癌症的攻击性.
- TGFβ在血小板癌细胞相互作用中的特定作用仍未得到充分探索.
研究的目的:
- 研究TGFβ刺激MCF7乳腺癌细胞如何影响它们与血小板的相互作用以及诱导血小板聚合的能力.
- 为了确定基底的分子机制TGFβ介导增强血小板癌细胞交叉交互.
主要方法:
- 用TGFβ治疗MCF7乳腺癌细胞,并与血小板共同培养.
- 进行了基因表达和表面蛋白质分析.
- 使用整合素αv (cilengitide) 和加列-3 (GB1107) 抑制剂来评估它们对细胞-血小板相互作用和聚合的影响.
- 来自乳腺癌组织的蛋白质组数据集被分析以寻找相关性.
主要成果:
- TGFβ刺激增强了MCF7细胞的上皮-介质细胞过渡 (EMT),并增加了它们与血小板的结合.
- 在TGFβ上调的MCF7粘附分子中,TGFβ上调的MCF7粘附分子是integrin-αv/CD51和galectin-3.
- 利基提德降低了TGFβ诱导的血小板-MCF7相互作用,而利基提德和GB1107减少了TGFβ治疗的MCF7诱导的血小板聚合.
- 在乳腺癌组织中发现TGFβ1和血小板标记因特林α-IIb (CD41) 之间的正相关性.
结论:
- TGFβ刺激增强了血小板与癌细胞的相互作用,并通过对粘附分子的上调调节促进了血小板聚合.
- 向整合素αv可能会破坏血小板与癌细胞的结合.
- 这些发现强调了TGFβ在促进癌症相关血栓形成和转移性进展中的作用.
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