低剂量索拉费尼布促进癌症干细胞扩张和加速瘤进展在软组织肉瘤
Sylvia M Cruz1, Khurshid R Iranpur1, Sean J Judge1
1Division of Surgical Oncology, Department of Surgery, University of California Davis, Sacramento, CA 95817, USA.
International journal of molecular sciences
|March 28, 2024
概括
低剂量索拉芬尼可能会意外地促进软组织肉瘤中的癌症干细胞 (CSC),增加瘤生长和转移. 需要更高的剂量来降低CSC活力,这表明谨慎的剂量对瘤治疗至关重要.
科学领域:
- 在瘤学瘤学.
- 癌症干细胞生物学
- 肉瘤研究研究 肉瘤研究
背景情况:
- 癌症干细胞 (CSC) 假设表明,细胞的亚群驱动瘤生长和复发.
- CSCs对化学疗法和放射治疗 (RT) 等常规疗法具有抗性.
- 它们在癌症中的存在与不良的临床结果相关.
研究的目的:
- 调查索拉费尼布对软组织肉瘤 (STS) 中的CSC和非CSC的剂量依赖作用.
- 评估索拉费尼布剂量对CSC增殖,干状功能和活力的影响.
- 为了将CSC水平与STS患者治疗索拉费尼布的临床结果相关联.
主要方法:
- 在体外研究中,将STS细胞系和原发性瘤暴露在不断升级的索拉费尼布剂量中,评估活力和化脱酶 (ALDH) 表达.
- 在体内研究中分离了ALDH-明亮的CSC,用索拉芬尼治疗它们,并分析了异种移植的生长和存活率.
- 从接受新辅助索拉费尼布和RT的STS患者 (NCT00864032) 的临床数据中分析了CSC变化和无转移生存率.
主要成果:
- 低剂量索拉芬尼奇异地增加了瘤CSC的扩散和干状功能.
- 较高的索拉费尼布剂量表明对CSCs的抗活力效应.
- 接受索拉费尼布治疗的STS患者在治疗后显示CSC增加,较高的ALDH得分与较差的无转移存活率有关.
结论:
- 低剂量索拉芬尼可能会在STS中促进CSC表型,导致瘤生长和转移的增加.
- 治疗策略可能需要考虑sorafenib剂量,以避免增强CSCs.
- 有效地准CSC对于改善软组织肉瘤患者的治疗结果至关重要.
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