一种新的雷尼拉胺素T右半模拟物作为STAT3的小分子降解剂
Preeyaphan Phookphan1,2, Satapat Racha1,3, Masashi Yokoya4
1Center of Excellence in Cancer Cell and Molecular Biology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
Marine drugs
|August 28, 2024
概括
一种新的海洋天然产品衍生品DH_31有效准信号转换器和转录3激活器 (STAT3),抑制癌细胞生长和转移. 这种STAT3抑制是通过无素-蛋白质体降解来实现的,为向癌症治疗提供了一个新的途径.
科学领域:
- 海洋天然产品化学 海洋天然产品化学
- 癌症生物学 癌症生物学
- 分子药理学分子药理学
背景情况:
- 信号转换器和转录3激活器 (STAT3) 的构成性激活与瘤发育和转移有关.
- 在各种癌症中,STAT3 是一个有前途的治疗点.
- 需要新的化学实体来有效地准STAT3.
研究的目的:
- 为了研究DH_31的抗癌潜力,一种新型的雷尼拉胺T衍生物.
- 阐明DH_31的作用机制,重点关注STAT3抑制.
- 评估DH_31.31的结构-活性关系 (SAR).
主要方法:
- 在实验室中对H292和H460细胞进行细胞毒性测试 (IC50测定).
- 对表皮细胞-介质细胞过渡 (EMT) 标记物和阿诺基斯敏感性的分析.
- 作为分子标的STAT3的in silico预测和实验验证,包括蛋白质降解研究.
- 分子对接以预测与STAT3.3的结合相互作用.
主要成果:
- DH_31对H292 (5.54μM) 和H460 (2.9μM) 细胞表现出强烈的细胞毒性活性.
- DH_31显著抑制了EMT表型,减少了细胞迁移,并使细胞对anoikis敏感.
- DH_31通过无素-蛋白质体降解降低了STAT3水平,并抑制了STAT3/EMT标志物.
- 分子对接揭示了STAT3.3中DH_31和Cys-468之间的共价相互作用.
结论:
- DH_31是一种强大的STAT3向剂,具有显著的抗癌特性.
- 新型雷尼拉胺T衍生物DH_31显示出开发新的向癌症疗法的潜力.
- 了解DH_31抑制STAT3的机制有助于开发新的治疗策略.
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