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改变SIX1-Q177R的结合亲和力与威尔姆斯瘤中增强的WNT5A和WNT通路效应体表达相关
Matthew J Stevenson1, Sabrina K Phanor2, Urvi Patel1
1Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
Disease models & mechanisms
|October 10, 2023
概括
威尔姆斯瘤中的SIX1/2-Q177R突变可以调节WNT5A,这是一种与瘤进展和复发相关的基因. 这种突变增强了SIX1与WNT5A调节区域的结合,导致WNT5A的表达增加.
科学领域:
- 儿科瘤学 儿科瘤学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 威尔姆斯瘤起源于神经原生细胞 (NPCs),可以含有叶芽组织.
- 在SIX1和SIX2转录因子中的一个常见突变,Q177R,与Blastemal Wilms瘤和复发有关.
- 通过SIX1/2-Q177R驱动瘤进展的特定分子机制仍然不完全理解.
研究的目的:
- 为了研究SIX1/2-Q177R突变在威尔姆斯瘤中的转录调节效应.
- 确定SIX1/2-Q177R的下游点,这些瘤有助于瘤的进展和复发.
主要方法:
- 对威尔姆斯瘤转录基因数据集的分析.
- 染色体免疫沉降测序 (ChIP-seq) 用于识别SIX1结合部位.
- 在体外测试以评估基因表达和蛋白质结合.
主要成果:
- SIX1/2-Q177R突变瘤显示WNT5A和其他WNT通路基因的表达增加.
- SIX1/SIX1-Q177R与WNT5A促进体和远端调节元件 (CREs) 结合.
- SIX1和SIX1-Q177R激活了CREs的WNT5A表达,并显示了增强的促进体结合.
结论:
- 这种SIX1/2-Q177R突变通过上调WNT5A表达来促进威尔姆斯瘤的进展和复发.
- SIX1/2-Q177R通过加强与其促进物和CREs的结合,直接调节WNT5A.
- 针对SIX1/WNT5A轴可能为复发的威尔姆斯瘤提供治疗策略.
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