SOX9依赖性纤维化驱动脏功能在神经裂中
Maulin Mukeshchandra Patel1, Vasileios Gerakopoulos1, Bryan Lettenmaier1
1Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
EMBO molecular medicine
|April 10, 2025
概括
纤维化驱动脏功能障碍在神经衰竭 (NPHP). 向FBW7-SOX9-WNT4通路可能会在这些疾病中保持功能.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 纤维化是囊性脏疾病的标志,包括诸如 nefrophthisis (NPHP) 这样的自身遗传性衰退性疾病.
- 纤维化在功能下降中的确切作用及其在NPHP中的分子基础仍然不完全理解.
研究的目的:
- 调查FBW7 (F-box和氨酸丰富的重复蛋白7) 在纤维化和功能中的作用.
- 在类似NPHP的模型中阐明将FBW7与病理联系起来的分子机制.
主要方法:
- 生成了特异性的Fbxw7淘汰赛小鼠以模拟NPHP.
- 分析了病理,纤维化和关键调节基因 (SOX9,WNT4) 的表达.
- 利用具有异构性Sox9缺失的复合突变小鼠来评估路径调制.
主要成果:
- Fbxw7的特异性删除诱导了类似NPHP的病理,包括囊,管状变性,严重纤维化和功能受损.
- 失去FBW7导致SOX9和亲纤维化因子WNT4.4的表达增加.
- 在复合突变体中降低SOX9水平使WNT4正常化,纤维化减少,功能保持.
结论:
- 在NPHP中,FBW7-SOX9-WNT4信号轴是纤维化和功能下降的关键驱动因素.
- 这一途径代表了NPHP和其他自身逆性脏疾病的潜在治疗标.
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