通过OSK基因疗法的持续视力恢复,在青光眼的小鼠模型中进行
Margarete M Karg1, Yuancheng Ryan Lu2,3, Nasrin Refaian1
1Schepens Eye Research Institute of Mass Eye & Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA.
Cellular reprogramming
|December 7, 2023
概括
使用Oct4,Sox2和Klf4 (OSK) 的表观遗传复原疗法在绿眼病模型中安全地恢复了视力. 这种基因疗法显示出长期的疗效和安全性,为治疗失明和与年龄相关的疾病提供了潜力.
科学领域:
- 眼科医生 眼科 眼科
- 神经科学是一个神经科学.
- 再生医学是一种再生医学.
背景情况:
- 玻璃眼是不可逆转的失明的主要原因,原因是视网膜质细胞 (RGC) 的逐渐丧失.
- 使用Oct4,Sox2和Klf4 (OSK) 的表观遗传重编程,在不改变细胞身份的情况下,对RGCs的复苏有希望.
研究的目的:
- 评估OSK表观遗传复原疗法的长期疗效,持续时间和安全性,在青光眼的小鼠模型中.
- 为了确定视力恢复的OSK表达的最佳持续时间和时间.
主要方法:
- 一种可诱导多西环素的Tet-On AAV系统被用于在青光眼小鼠中输送OSK基因.
- 在视力损伤后诱导持续或循环OSK表达,并在一年内监测疗效.
- 视力恢复,RGC转录,视网膜结构和体重被评估.
主要成果:
- 两个月的OSK治疗完全恢复了视力,效果持续长达11个月,表达时间长.
- 在多西环林戒药4周后,RGC转录恢复到基线,视力益处逐渐减少,但仍然高于基线.
- 即使在持续21个月的OSK表达后,也没有观察到对视网膜结构或体重的不良影响.
结论:
- 欧斯克表观遗传复原疗法在绿眼中恢复视力方面显示出显著的长期疗效和安全性.
- 这种方法具有相当大的治疗潜力,可以治疗青光眼,其他眼睛损伤以及与年龄有关的神经退行性疾病.
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