骨髓瘤介质干细胞的生物能学提供了一个新的选择性治疗点
Oded Komemi1,2, Elina Orbuch1,2, Osnat Jarchowsky-Dolberg2,3,4
1Oncogenetic Laboratory, Meir Medical Center, Kfar Saba, Israel.
Oncogenesis
|April 11, 2025
概括
来自多发性骨髓瘤 (MM) 患者的介质干细胞 (MSC) 已经改变了线粒体. 用Venetoclax准他们的余呼吸能力 (SRC) 可以克服药物耐药性.
科学领域:
- 线粒体生物学 线粒体生物学
- 癌症干细胞是癌症干细胞.
- 细胞生物能学 细胞生物能学
背景情况:
- 骨髓介质干细胞 (BM-MSCs) 在多发性骨髓瘤 (MM) 进展中发挥作用.
- 线粒体的功能和动态对于细胞的生物能量和生存至关重要.
- 与正常供体BM-MSC相比,MM-MSCs表现出不同的线粒体特征.
研究的目的:
- 来自MM患者的线粒体健康状况,生物能学和BM-MSC的动态与正常捐赠者的BM-MSC的特征.
- 研究向MM-MSCs中的线粒体通路的治疗潜力.
主要方法:
- 对BM-MSCs的蛋白质组分析.
- 评估线粒体膜潜力 (ΔΨm),质子泄漏,备用呼吸能力 (SRC) 和线粒体活性氧物种 (mtROS).
- 研究线粒体动力学 (裂变/融合) 和展开的蛋白质反应 (UPR).
- 评估STAT3激活的情况.
- 用MM细胞进行共同培养实验,并使用Venetoclax和Bortezomib进行治疗.
主要成果:
- MM-MSCs 显示了线粒体受损, ΔΨm 降低和质子泄漏增加,以及刺激的 SRC,融合和 UPR.
- ND-MSCs依赖于裂变,同时减少MM-MSC融合损害了糖解,OXPHOS和mtROS.
- 在MM-MSC中,STAT3的激活调节了它们的OXPHOS和SRC.
- 威尼托克拉克斯对MM-MSC SRC的向减少了它们对MM细胞的支持,并使MM细胞对Bortezomib敏感.
结论:
- MM-MSCs具有独特的线粒体生物能学,这对于它们的强度和支持MM至关重要.
- 用Venetoclax针对MM-MSC的SRC,与传统疗法结合,为克服MM-MSCs赋予的耐药性提供了一个潜在的策略.
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