在HER2阳性乳腺癌中,SIRT6促进转移和复发
Cristina Andreani1,2, Caterina Bartolacci3,4, Giuseppe Persico5
1Department of Biosciences and Veterinary Medicine, University of Camerino, 62032, Camerino, Italy. Cristina.Andreani@unicam.it.
Scientific reports
|December 11, 2023
概括
高素6 (SIRT6) 水平会促进HER2阳性侵袭性乳腺癌,增加转移并降低存活率. SIRT6抑制T盒转录因子3 (TBX3),这是一个更好的预后标志.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 赛尔图因6 (SIRT6) 是一种具有已知的瘤抑制作用的基因组脱乙酶.
- HER2阳性乳腺癌是一种临床显著的亚型.
- 在HER2阳性乳腺癌中SIRT6的作用尚不清楚.
研究的目的:
- 研究SIRT6过度表达 (SIRT6-OE) 对HER2阳性乳腺癌的影响.
- 探索这种亚型中SIRT6的潜在分子机制和临床相关性.
主要方法:
- 利用Delta16HER2小鼠模型用于HER2阳性乳腺癌.
- 进行了ChIP-seq,RNA-seq和RT-PCR实验.
- 分析了来自HER2阳性乳腺癌患者的临床数据.
主要成果:
- SIRT6-OE加速了瘤的发病速度,并促进了更具侵略性的表型,包括增加了瘤焦点和转移.
- SIRT6-OE瘤表现出类似癌症干细胞 (CSC) 的特征,瘤休眠,衰老减少和氧化DNA损伤.
- 高SIRT6表达与患者无复发存活率 (RFS) 较差相关.
- 通过H3K9ac脱乙基化,SIRT6-OE抑制了T盒转录因子3 (TBX3) 的表达.
- 低TBX3表达或功能丧失突变预测预后不佳.
结论:
- 高SIRT6水平表明HER2阳性乳腺癌的预后不佳和转移风险增加.
- TBX3是SIRT6的下游目标,也是预后不佳的潜在共同标志物.
- SIRT6表现出乳腺癌亚型特异性的作用,需要进一步的机制研究.
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