作为针对线粒体新陈代谢的抗癌剂的α-D-托科菲罗尔衍生物的合成和生物评估
Younghoon Kim1, Jungmin Kim2, Kyubin Hwang3
1Department of Biomedical Sciences, Graduate School of Medical Science, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
European journal of medicinal chemistry
|August 29, 2025
概括
通过抑制线粒体复合II (CII),新的α-D-托科菲罗尔衍生物有效地向侵袭性胃癌干细胞. 这些化合物在临床前模型中显示出强烈的抗癌活性,为这种具有挑战性的疾病提供了有前途的治疗策略.
科学领域:
- 生物化学
- 癌症学
- 线粒体生物学
背景情况:
- 胃癌 (GC) 的预后很差,主要是由于癌症干细胞 (CSC).
- 在CSC中丰富的侵略性茎状/EMT/半机体 (SEM) GC亚型依赖线粒体复合物II (CII) 存活,并且对化疗具有耐药性.
- 针对CSC中的CII呼吸等代谢弱点,是一个潜在的治疗途径.
研究的目的:
- 探索新型α-D-托科法醇衍生物作为针对GC的向疗法,特别关注抑制酸脱酶 (SDH),这是CII的催化核心.
- 评估这些衍生物对具有丰富癌症干细胞 (S细胞) 和患者衍生器官 (PDO) 的SEM型GC模型的疗效.
- 阐明作用机制,包括对SDH活性,氧耗,活性氧物种 (ROS) 生产和亡的影响.
主要方法:
- 合成和评价α-D-托科菲罗尔衍生物 (马洛纳特衍生物10和初级胺基衍生物17).
- 在体外测试以确定S细胞和GC PDO中的抗繁殖活性 (GI50值),并评估SDHC活性和氧消耗率 (OCR).
- 使用异种移植模型进行体内研究,以评估瘤生长抑制和全身毒性.
主要成果:
- 衍生品10和17对S细胞表现出强烈的抗增殖活性,显著优于α-TOS.
- 机理学研究证实,衍生品10和17抑制SDHC活性,降低CII特异性的OCR,增加ROS的产生,并诱导细胞亡.
- 在SEM类型的GC PDO (高SDHC) 中,与非SEM类型的PDO (低SDHC) 和α-TOS相比,衍生品10和17显示出增强的抗繁殖作用.
- 在体内,化合物10在异种移植模型中显著抑制瘤生长,毒性最小.
结论:
- α-D-托科菲罗尔衍生物10和17选择性地向SDHC,破坏线粒体复合体II功能和氧化还原稳定.
- 这些衍生物在体外和体内的SEM类胃癌中具有显著的抗瘤功效.
- 针对SDHC是一种有前途的策略,用于开发针对侵袭性,类似茎状的胃癌的新疗法.
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