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ALK可以提高POSTN和WNT信号的调节,从而驱动神经母细胞瘤
Miller Huang1, Wanqi Fang1, Alvin Farrel2
1Children's Hospital Los Angeles, Cancer and Blood Disease Institutes, and The Saban Research Institute, Los Angeles, CA, USA; Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Cell reports
|March 7, 2024
概括
无细胞淋巴瘤激酶 (ALK) 通过激活WNT信号和增加像POSTN.这样的细胞外基因基因来驱动神经母细胞瘤. 这一发现为儿童癌症提供了新的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 神经母细胞瘤是一种常见的儿童脑外固体瘤.
- MYCN和突变性形淋巴瘤激酶 (ALK) 在神经母细胞瘤瘤发生中的作用已知,但ALK的具体贡献尚不清楚.
研究的目的:
- 用人类干细胞模型研究突变性形淋巴瘤激酶 (ALK) 在神经母细胞瘤发育中的作用.
- 阐明ALK有助于神经母细胞瘤形成和进展的分子机制.
主要方法:
- 利用基于人类干细胞的神经母细胞瘤模型.
- 进行了转录基因分析,以确定关键的信号通路和基因.
- 进行了基因淘汰 (POSTN,FN1) 和途径抑制 (WNT) 实验.
- 分析患者数据,以确定与已识别的分子标记物的相关性.
主要成果:
- 与单独的MYCN相比,ALK和MYCN的联合表达缩短了瘤潜伏时间.
- ALK/MYCN瘤表现出一个介质细胞表型,与MYCN驱动的上腺素瘤不同.
- 在ALK/MYCN瘤和ALK突变患者瘤中观察到细胞外矩阵基因POSTN和FN1的高表达.
- 阻断POSTN延迟了粘附和抑制了增殖,而FN1阻断没有显著的影响.
- POSTN损失减少了ALK依赖的WNT信号激活;WNT抑制降低了POSTN表达和瘤生长.
结论:
- 无细胞淋巴瘤激酶 (ALK) 通过涉及POSTN和WNT信号的前循环促进神经母细胞瘤.
- 这一途径代表了ALK驱动的神经母细胞瘤的潜在治疗标.
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