CD44调节细胞迁移和入侵尤文肉瘤细胞中的细胞
Enrique Fernández-Tabanera1,2,3, Laura García-García1, Carlos Rodríguez-Martín1,2
1Unidad de Tumores Sólidos Infantiles, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain.
International journal of molecular sciences
|July 29, 2023
概括
CD44标准异型 (CD44s) 在迁移的尤文肉瘤细胞中过度表达. CD44s减少了扩散,但增加了迁移和入侵,由EWSR1::FLI1级别调节.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 尤文肉瘤是由EWSR1::FLI1瘤转录因子驱动的.
- EWSR1::FLI1水平可以变化,形成具有不同行为特征的独特细胞群.
- EWSR1::FLI1低细胞表现出迁移和入侵性质,而EWSR1::FLI1高细胞则更加繁殖.
研究的目的:
- 为了研究CD44标准异型 (CD44s) 在尤宁肉瘤中的作用.
- 描述CD44s对细胞增殖,迁移和侵入的功能影响.
- 了解CD44s表达和EWSR1::FLI1水平之间的关系.
主要方法:
- 使用了三种可诱导多西环素的尤инг肉瘤细胞模型 (A673,MHH-ES1,CADO-ES1).
- 在CD44s调制后评估了扩散,克隆性,迁移和入侵能力.
- 研究了不同分子重量的氨酸 (HA) 对细胞迁移的影响.
- 分析了与EWSR1::FLI1 knockdown相关的CD44s表达.
主要成果:
- CD44s过度表达减少了所有测试细胞系的增殖,但没有影响克隆性.
- 在A673和MHH-ES1细胞系中,CD44s增强了细胞迁移,具有氨酸的不同作用 (阻断HMW-HA,增加LMW-HA).
- 侵袭能力与特定细胞系中的CD44s表达相关 (A673,MHH-ES1).
- 在EWSR1::FLI1敲击后,发现CD44s受到上调.
结论:
- CD44s是EWSR1::FLI1低尤文肉瘤细胞中迁移和侵入性表型的关键调节者.
- CD44s 影响细胞增殖和迁移,其作用可能由瘤微环境 (如酸) 调节.
- EWSR1::FLI1和CD44s之间的相互作用突出了管理尤文肉瘤细胞扩散的潜在治疗点.
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