失调的SASS6表达促进了形成和细胞入侵表型的增加
Eleanor Hargreaves1, Rebecca Collinson2, Andrew D Jenks3
1Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, UK.
Life science alliance
|August 18, 2025
概括
螺旋组合异常蛋白6同源 (SAS-6) 通过激活YAP/TAZ通路,促进癌细胞入侵. 抑制SAS-6或YAP阻断了入侵,突出了癌症的新治疗目标.
科学领域:
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
- 分子生物学分子生物学
背景情况:
- 中心球和膜缺陷是癌症的标志,与入侵有关,但机制尚不清楚.
- 螺旋组合异常蛋白6同源 (SAS-6) 对于中心点/形成至关重要,通常在晚期线粒分裂中降解/G1.
- 不受控制的SAS-6表达在癌症进展中的作用需要进一步研究.
研究的目的:
- 为了研究SAS-6和癌细胞入侵之间的机械联系,纤毛发育.
- 确定SAS-6在癌细胞中调节YAP/TAZ通路中的作用.
- 探索SAS-6作为入侵性肺癌的潜在治疗点.
主要方法:
- 使用一种不可降解的SAS-6突变体 (SAS-6ND) 来研究其影响.
- 评估细胞形态,纤维化,核变形和YAP/TAZ通路激活 (包括TEAD转录).
- 采用SAS-6和YAP的基因下调策略,并抑制肺癌细胞系中的纤维生成.
主要成果:
- 非降解性SAS-6 (SAS-6ND) 增加了纤维化,细胞入侵和YAP/TAZ通路激活.
- SAS-6ND诱导细胞/核形状变化和核YAP转位,增强TEAD-依赖转录.
- 在侵袭性肺癌细胞中阻断SAS-6 (DMS273) 阻止了侵袭并降低了YAP水平;抑制或阻断YAP纤毛发生也防止了SAS-6介导的侵袭.
结论:
- 通过YAP/TAZ路径激活,SAS-6直接促进癌细胞的入侵.
- 由于SAS-6诱导的纤毛发育和YAP/TAZ信号传递,对其亲侵入性作用至关重要.
- 针对SAS-6或YAP是一个潜在的策略来打击侵袭性癌症.
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