来自瘤的牛皮素驱动糖分分解以促进白血病发生
Sonali Sharma1,2, Benjamin J Rodems1,2, Cameron D Baker3
1Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY, USA.
Nature
|May 14, 2025
概括
白血病干细胞依赖氨酸-氨酸转运器 (TAUT) 轴进行生长. 阻断这种由氨酸二氧化酶1型 (CDO1) 驱动的轴,会影响白血病的进展,并提高治疗效率.
科学领域:
- 血液学
- 癌症生物学
- 分子瘤学
背景情况:
- 微环境信号对于干细胞自我更新和癌症进展至关重要.
- 已知促进癌症进展的特定利基驱动信号,但缺乏癌症干细胞受体配体的全面地图.
研究的目的:
- 在瘤进展过程中与白血病干细胞 (LSCs) 相互作用的骨髓结构的分子线索.
- 通过集成scRNA-seq,人类LSCRNA-seq和CRISPR查数据来绘制白血病发生所必需的LSC-niche相互作用.
主要方法:
- 时间单细胞RNA测序 (scRNA-seq) 来分析骨髓.
- 将scRNA-seq数据与人类LSCRNA-seq和体内CRISPR查进行整合.
- 使用TAUT遗传功能丧失的小鼠模型和来自患者的急性髓性白血病 (AML) 细胞.
主要成果:
- 在侵袭性髓性白血病中,定-定转运器 (TAUT) 轴被确定为关键依赖.
- 在骨髓性疾病的进展过程中,氨酸二氧化酶1型 (CDO1) 驱动的氨酸生物合成增加.
- 在体内,TAUT抑制阻碍了髓性白血病的进展,并与AML细胞中的venetoclax协同作用.
结论:
- 这项研究确定了白血病进展中的 stromal 信号的时间景观.
- 氨酸被认为是骨髓性恶性瘤的关键调节剂.
- 阻断TAUT是一种潜在的AML治疗策略,特别是在抗venetoclax病例中.
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