Redox Biol:老年性黄斑变性患者RPE生物能代谢和抗氧化功能紊乱

2017-06-19 Emma MedSci原创

AMD,即老年性黄斑变性,是老年人失明的主要原因。有研究人员推测,RPE(视网膜色素上皮细胞)的线粒体缺陷是与AMD病理学相关,因此原代培养了AMD患者的RPE和同龄未患有AMD健康者的RPE,探究它们之间的不同。

AMD,即老年性黄斑变性,是老年人失明的主要原因。有研究人员推测,RPE(视网膜色素上皮细胞)的线粒体缺陷是与AMD病理学相关,因此原代培养了AMD患者的RPE和同龄未患有AMD健康者的RPE,探究它们之间的不同。
研究人员首先对体外培养的AMD患者RPE的相关基因表达,蛋白质含量和功能进行了分析,结果显示,这些细胞具有体内RPE的许多基本特征,这为以后AMD的体外研究如药物的应用提供了一个非常好的模型。使用海马生物能量代谢测定仪(Seahorse Extracellular Flux Analyzer)测量生物能量,观察到AMD患者的RPE比健康者的RPE显示出线粒体功能和糖酵解功能降低,来自AMD患者的RPE也更能抵抗这两种能量产生途径的氧化失活,并对氧化诱导的细胞死亡更不敏感。对生物能量和抗氧化应激差异的潜在机制的调查显示,来自AMD患者RPE的PGC1α蛋白表达增加以及多个氧化刺激相关基因的差异性表达。
研究人员的结果表明,AMD患者RPE的原代培养,为以后体外研究AMD提供了一个优秀的模型;RPE的生物能量代谢紊乱与AMD病理相关;体内疾病环境引起的细胞代谢变化,在体外培养时也得到保留。 

原始出处:
doi: 10.1016/j.redox.2017.05.015.


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    2017-06-26 feather89
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    2017-07-24 sunylz
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    2017-06-21 huangdf
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    2017-06-21 muzishouyi

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