使用低剂量的Teniposide通过降低乳腺癌中ZEB2驱动的RNA聚合酶I激活的降低调节来准EMT
Brandon J Metge1, Heba Allah M Alsheikh1, Sarah C Kammerud1
1Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA.
Cell death & disease
|May 8, 2024
概括
作为一种拓酶抑制剂,teniposide通过向上皮质-介质细胞转换 (EMT) 和抑制RNA聚合酶I (Pol I) 活性来逆转癌细胞转移. 这种经FDA批准的化合物在减少乳腺癌传播方面表现有前途.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症转移研究 癌症转移研究
背景情况:
- 转移性传播是一个复杂的过程,涉及瘤细胞和微环境的交叉通话.
- 表皮-介质细胞过渡 (EMT) 对于转移至关重要,影响茎状,药物耐药性和亡.
- 治疗向EMT的成功是有限的.
研究的目的:
- 为了确定能够逆转EMT的FDA批准的化合物.
- 调查Teniposide在调节EMT程序中的新型作用.
- 探索Teniposide作为治疗乳腺癌转移的治疗剂的潜力.
主要方法:
- 对FDA批准的化合物进行高通量选.
- 评估Teniposide对EMT标记物和通路的影响.
- 评估Teniposide对RNA聚合酶I (Pol I) 活性和rRNA生物发生的影响.
- 在乳腺癌模型中测试Teniposide在减少肺部殖民化的有效性.
主要成果:
- 提尼胺被确定为EMT的强大的调节器,特别是通过IRF7-NMI介导反应.
- 替尼胺显著降低了EMT调节器ZEB2.2的表达.
- 由Teniposide降低ZEB2的调节抑制了Pol I活性和rRNA生物发生.
- 泰尼胺治疗显著减少了乳腺癌细胞的肺部殖民.
结论:
- 尼胺有效地逆转EMT,并在低度下减轻介质细胞类侵袭性表型.
- 泰尼胺对EMT和rRNA生物发生的双重作用使其成为重新利用的有希望的候选人.
- 泰尼胺可能是一个可行的治疗选择,以限制乳腺癌转移.
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