通过MUSASHI2-DEPTOR-KIF11轴调节代谢适应和白血病进展
Tania Setiawan1,2, Jabir Aliyu Muhammad1,2, Nadya Marcellina1,2
1Department of Integrated Biomedical Science, Soonchunhyang University, Cheonan-si, Republic of Korea.
Leukemia
|October 1, 2025
概括
DEPTOR通过稳定KIF11来调节白血病的进展,影响氨基酸代谢和细胞存活. 这种MSI2/DEPTOR/KIF11轴对于侵袭性髓性白血病至关重要.
科学领域:
- 分子生物学分子生物学
- 癌症生物学 癌症生物学
- 血液学 血液学 血液学
背景情况:
- 氨基酸平衡对于癌细胞的生存至关重要.
- 该mTOR通路调节营养感应和细胞新陈代谢.
- 调节mTOR的调节剂DEPTOR与各种癌症有关,但其在急性髓性白血病 (AML) 中的作用尚不清楚.
研究的目的:
- 调查DEPTOR在急性髓性白血病 (AML) 发病过程中的作用.
- 阐明DEPTOR影响白血病发生的分子机制.
- 确定DEPTOR作为髓性白血病的潜在治疗点.
主要方法:
- 在AML患者样本和细胞系中分析DEPTOR表达.
- 调查DEPTOR和KIF11之间的相互作用.
- 利用分子生物学技术研究ATF4和MSI2.2的DEPTOR调节.
- 在AML和爆发期慢性髓性白血病 (bpCML) 模型中评估DEPTOR损失的功能影响.
- 评估DEPTOR对造血干细胞的影响.
主要成果:
- DEPTOR在白血病干细胞 (LSCs) 中表达很高,与不良的临床结果相关.
- DEPTOR表达是由ATF4诱导的,并由MSI2.2稳定.
- 在AML和bpCML模型中,DEPTOR损失会影响白血病发生,而不会影响正常的造血干细胞.
- DEPTOR通过抑制其无处不在和蛋白质体降解来稳定KIF11.
- MSI2/DEPTOR/KIF11轴对于在营养压力下代谢适应至关重要.
结论:
- DEPTOR是AML和bpCML中白血病进展的关键调节剂.
- MSI2/DEPTOR/KIF11轴通过维持代谢适应来驱动白血病发生.
- 准MSI2/DEPTOR/KIF11轴代表了针对侵袭性髓性白血病的潜在治疗策略.
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