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通过对Myc的上调调节,WWOX促进了骨髓瘤的发展
Rania Akkawi1, Osama Hidmi1, Ameen Haj-Yahia1
1The Concern Foundation Laboratories, The Lautenberg Center for Immunology and Cancer Research, Department of Immunology and Cancer Research, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.
Cell death & disease
|January 5, 2024
概括
含有WW域的氧化还原酶 (WWOX) 损失通过上调骨髓干细胞中的Myc来加速骨髓瘤. 抑制Myc标MCM7减少瘤生长,揭示了这种侵袭性骨癌的治疗标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 骨髓瘤是一种具有攻击性的骨癌,结果不佳,部分原因是对其分子驱动因素的理解有限.
- 含有WW域的氧化降解酶 (WWOX) 基因在骨髓瘤中经常发生变化,其与Trp53的联合删除在小鼠中加速瘤的发展.
研究的目的:
- 使用可追溯的小鼠模型研究WWOX和Trp53在骨髓瘤发育中的作用.
- 为了确定早期的分子事件和潜在的治疗点在骨髓瘤启动.
主要方法:
- 产生的单击 (Trp53) 和双击 (Wwox/Trp53) 鼠标与一个 tdTomato 记者.
- 在体外和体内分析了骨髓介质干细胞 (BM MSCs) 的瘤发生潜力.
- 进行了转录基因和Myc-chromatin免疫沉测序 (ChIP-seq).
- 评估了WWOX恢复和MCM7抑制 (simvastatin) 对瘤细胞的影响.
主要成果:
- 双击的BM MSCs表现出致瘤性质,并且类似于骨髓瘤细胞.
- 失去WWOX导致了Myc的上调和增加了Myc与其目标基因的结合,包括MCM7.
- 恢复WWOX降低了Myc水平,抑制MCM7抑制了双击细胞的增殖和生长.
结论:
- 骨髓介质干细胞是研究骨髓瘤的关键平台.
- 通过Myc激活,WWOX损失促进骨髓瘤,识别Myc及其MCM7等点作为潜在的治疗点.
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