提奥斯特普顿通过与活性氧物种相关的细胞内膜网膜应激抑制结肠直肠癌的进展
Zhexuan Li1, Juan Nie2, Runyu Zhou3
1Yu-Yue Pathology Scientific Research Center, Chongqing 400039, PR China; Jinfeng Laboratory, Chongqing 400039, PR China.
Toxicology and applied pharmacology
|December 29, 2024
概括
一种抗生素thiostrepton通过诱导细胞死亡和减少瘤生长来对抗结肠直肠癌. 它通过引起蛋白质毒性和ER压力来起作用,这一过程依赖于反应性氧物种 (ROS).
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 结肠直肠癌 (CRC) 是全球癌症死亡的主要原因.
- 目前的CRC治疗效果有限,需要新的治疗策略.
- 向蛋白质毒性压力为癌症干预提供了一个有希望的途径.
研究的目的:
- 为了研究斯特对结直肠癌的抗癌作用.
- 为了阐明底层的分子机制的thiostrepton的作用.
- 评估蒂奥斯特普顿在抑制CRC细胞迁移和瘤生长方面的疗效.
主要方法:
- 在体外评估斯特对CRC细胞亡和迁移的影响.
- 在体内评估蒂奥斯特普顿对异种移植瘤生长的影响.
- 对蛋白质酶活性,蛋白质无化和ER压力标记物的分析 (GRP78,ATF4,P-eIF2α,CHOP).
- 研究反应性氧物种 (ROS) 和N-乙半氨酸 (NAC) 在斯特的机制中的作用.
主要成果:
- 蒂奥斯特普顿诱导了细胞亡,并减少了CRC细胞的迁移.
- 提奥斯特普顿在体内抑制了异种移植瘤的生长.
- 从机理上讲,斯特减少了蛋白酶体活性,增加了无处不在的蛋白质聚合,并通过ROS引发了ER压力.
- 这些效应在很大程度上被NAC扭转,证实了ROS依赖性.
结论:
- 提奥斯特普顿显示出针对结直肠癌的显著抗癌潜力.
- 该药物诱导癌细胞死亡,并通过ROS介导的蛋白质毒性和ER应激通路抑制迁移.
- 提奥斯特普顿是结直肠癌治疗的有前途的治疗药物.
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