deleterious lipofuscin of RPE are involved in pathological mechanisms leading to the degeneration of RPE in AMD. A2E, a major component of RPE lipofuscin, could cause damage to RPE cells. Nevertheless, all-trans-retinal dimer (atRAL dimer) was found to be much more abundant than that of A2E in eyes of Abca4-/-Rdh8-/- double-knockout (DKO) mice, a rodent model showing the typical characteristics of retinopathies
目的积聚为RPE的有害脂褐素的不可降解的荧光团与导致
AMD中RPE变性的病理机制有关。A2E是RPE脂褐素的主要成分,可能会损坏RPE细胞。然而,在Abca4-/-Rdh8-/-双敲除(DKO)小鼠的眼睛中发现,全反式视网膜二聚体(atRAL二聚体)比A2E丰富得多,这是一种啮齿动物模型,显示了AcaE4-D视网膜病变在
AMD患者中。我们的目的是阐明atRAL二聚体诱导的RPE变性的作用和机制。方法用HPLC检查从C57BL / 6J野生型(WT)和Abca4-/-Rdh8-/-DKO小鼠中收获的眼睛。细胞摄取,亚细胞定位,5-
溴-
2-脱氧尿苷(BrdU),Cdc25C,DNA链断裂,线粒体膜电位(ΔΨm),通过荧光显微镜分析细胞色素c。通过
乳酸脱氢酶(LDH)测定和死细胞染色测定细胞毒性。通过流式细胞术检测细胞凋亡和细胞周期阶段。此外,通过免疫印迹测定法测量了与细胞周期和细胞凋亡相关的蛋