H3K9乳化驱动FTO介导的NRF2抑制,以加剧糖尿病膀功能障碍中的膀上皮铁和炎症
Zongyao Fan1, Bin Ni1, Zheng Duan1
1Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210000, China.
Biochimica et biophysica acta. Molecular basis of disease
|December 3, 2025
概括
糖尿病膀功能障碍 (DBD) 涉及膀上皮的变化. 这项研究揭示了H3K9乳化/FTO/NRF2通路驱动DBD进展,为这种糖尿病并发症提供了新的治疗点.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
背景情况:
- 糖尿病膀功能障碍 (DBD) 导致严重的下泌尿道症状 (LUTS),影响生活质量.
- 目前对DBD的治疗主要是控制症状和保护器官,而不是解决潜在的膀上皮功能障碍.
- 膀上皮功能障碍是DBD的关键病原性因素.
研究的目的:
- 研究脂肪质量和与肥胖相关的蛋白质 (FTO) 和N6-甲基氨酸 (m6A) 修饰在糖尿病膀功能障碍 (DBD) 中的作用.
- 阐明FTO影响DBD进展的分子机制.
- 确定DBD的潜在治疗点.
主要方法:
- 从DBD患者和实验模型的膀上皮组织中分析FTO和m6A水平.
- 利用细胞模型研究FTO对铁亡和炎症的影响.
- 研究FTO,IGF2BP2和NRF2mRNA之间的相互作用.
- 检查p300介导的H3K9乳化 (H3K9la) 在FTO调节中的作用.
主要成果:
- 在DBD膀组织中观察到FTO和全球m6A低调的显著上调.
- 通过促进膀上皮细胞中的铁和炎症,FTO加剧了DBD进展.
- FTO通过IGF2BP2破坏了NRF2mRNA的稳定,导致NRF2蛋白表达减少.
- 恢复NRF2在DBD模型中显示出保护作用.
- 糖尿病引起的FTO过度表达与p300介导的H3K9la相关.
结论:
- H3K9la/FTO/NRF2轴被确定为糖尿病膀功能障碍中上皮质损伤的关键调节器.
- 准这一轴为管理DBD提供了一个新的治疗策略.
- 了解FTO的作用为治疗与糖尿病相关的LUTS开辟了新的途径.
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