人类眼镜中的DJ-1:在防止高级糖化最终产品形成方面的潜在作用
Sandip K Nandi1, Rooban B Nahomi2, Shivani Rathee3
1Department of Chemistry, BITS Pilani, K. K. Birla Goa Campus, Goa, India.
Protein science : a publication of the Protein Society
|November 13, 2025
概括
蛋白DJ-1抑制了人类透镜中先进的糖化最终产品 (AGEs) 的积累,这是与衰老和白内障相关的过程. 增强DJ-1活动可以预防或延迟这些与年龄相关的眼睛疾病.
科学领域:
- 生物化学 生物化学
- 眼科医生 眼科 眼科
- 分子生物学分子生物学
背景情况:
- 随着年龄的增长,高级糖化最终产品 (AGEs) 在人体透镜中积累,导致白内障.
- AGEs会导致镜片中的结构变化,黄色化和蛋白质交叉链接.
- DJ-1是一种被建议通过逆转早期糖化来抑制AGE形成的蛋白质.
研究的目的:
- 为了调查DJ-1在人类镜头中的存在和活性.
- 确定DJ-1在防止AGE积累和透镜蛋白交叉链接方面的作用.
- 探索DJ-1作为与年龄相关的眼睛疾病的潜在治疗点.
主要方法:
- 在人类镜片上皮细胞和外皮层中检测到DJ-1.
- 评估了DJ-1的催化活性和在老化镜片中的甲基醇 (MGO) 代谢.
- 使用了DJ-1抑制剂和与透镜蛋白和细胞重组的DJ-1.
主要成果:
- DJ-1在人体透镜中具有催化活性,但其MGO代谢功能随着年龄的增长而下降.
- 抑制DJ-1促进了MGO衍生的AGE的形成.
- 重组DJ-1阻止了透镜蛋白中的蛋白质交叉链接和AGE,并抑制了透镜细胞中的细胞死亡.
结论:
- DJ-1 活跃地阻碍了 AGE 在人体透镜中的积累.
- DJ-1的保护功能随着年龄的增长而减弱.
- 对DJ-1活动的药理增强可能会预防或延迟长视障和白内障.
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