铁 - - 一种潜在的特征,是内拉替尼诱导的结肠上皮损伤的基础
Triet P M Nguyen1,2,3, Susan L Woods4,5, Kate R Secombe6
1School of Biomedicine, The University of Adelaide, Adelaide, South Australia, Australia. phuminhtrietthomas.nguyen@unimelb.edu.au.
Cancer chemotherapy and pharmacology
|July 13, 2024
概括
涅拉替尼治疗导致大肠损伤在老鼠中,主要是通过ferroptosis,而不是apoptosis. 向铁化可能会降低neratinib.
科学领域:
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
- 细胞生物学 细胞生物学
背景情况:
- 涅拉提尼布是一种经批准的延长辅助疗法,用于治疗HER2阳性乳腺癌.
- 涅拉提尼布的使用与显著的胃肠道毒性有关,包括腹和腹痛.
- 尼拉替尼诱导的结肠损伤的确切机制在很大程度上是未知的.
研究的目的:
- 为了研究内拉提尼布诱导的肠道毒性背后的生物过程,特别是结肠.
- 为了确定细胞死亡的类型 (细胞亡与铁亡) 涉及内拉提尼布诱导的结肠损伤.
主要方法:
- 使用RT-qPCR和组织学分析了接受涅拉替尼治疗的老鼠的结肠组织.
- 之前发表的RNA测序和CRISPR查数据集来自人类和小鼠细胞系的数据被利用.
- 研究了涅拉替尼对结肠组织的影响,并阐明了潜在的细胞死亡机制.
主要成果:
- 涅拉提尼布在大鼠的偏远结肠中诱导了更严重的结肠上皮损伤.
- 在人类质母细胞瘤细胞中,质基因特征得到了丰富,而在小鼠乳腺癌细胞和异种移植中,质基因特征得到了丰富.
- 铁亡,而不是亡,被确定为尼拉替尼诱导的大肠损伤在老鼠中可能的组织病理特征.
结论:
- 铁亡是导致涅拉替尼诱导的结肠损伤的关键机制.
- 向铁灭的分子途径是一个潜在的治疗策略,以减轻内拉替尼的肠道毒性.
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