神经营养素-4-神经短肽NAPVSIPQ融合基因对兔眼虹膜色素上皮细胞的转染和保护作用  

The effect of NT4-NAP fusion gene transfection on photoprotection of rabbit iris pigment epithelium cells

作　　者：佘华宁[1] 孙乃学[1] 郑玉萍[1] 权彦龙[1] 曹振平[1] 王肖华[1] 

机构地区：[1]西安交通大学附属第二医院眼科,710004

出　　处：《中华眼科杂志》2006年第11期1008-1012,共5页Chinese Journal of Ophthalmology

基　　金：陕西省科技计划基金资助项目[2004K16-G8(1)]

摘　　要：目的探讨神经营养素-4(NT4)-神经短肽(NAP)对兔虹膜色素上皮细胞(IPECs)的保护作用。方法分离培养兔IPECs,采用非对称互补引物/模板方法构建神经短肽NAP和神经营养因子NT4的融合基因,构建重组腺相关病毒(rAAV)-绿色荧光蛋白(GFP)和rAAV-NAP,并以此转染体外培养的兔IPECs,以荧光表达来检测病毒的转染情况。对体外培养的兔IPECs进行紫外线光损伤,并用MTT法和流式细胞仪来检测NAP对兔IPECs的保护作用。结果转染了rAAV-GFP的兔IPECs表达了明显的GFP荧光。与对照细胞相比,转染了rAAV-NAP的兔IPECs经紫外线光损伤后,细胞的增殖正常,细胞凋亡率降低。结论本研究所构建的rAAV-NAP可有效地转染体外培养的兔IPECs,NAP对兔IPECs有光保护作用。(中华眼科杂志,2006,421008-1012)Objective To investigate the effect of infection with adeno-associated virus （AAV） vector containing NT4-NAP fusion gene on photoprotecion of rabbit iris pigment epithelium cells （IPECs）. Methods rAAV-GFP and rAAV-NAP （containg NT4-NAP fusion gene ）were constructed; rabbit IPECs were cultured and infected with rAAV-GFP and rAAV-NAP; transfection of viruses was detected by GFP fluorescence expression; NAP protect rabbit iris pigment epithelium from light stimulation was evaluated by MTr and flow cytometry . Results Rabbit IPECs expressed the GFP fluorescence; comparing with control cells, IPECs transfected with rAAV-NAP remained normal proliferation and showed lower apoptosis percentage after ultra-violet stimulation. Conclusion rAAV-NAP constructed in the study can infect rabbit IPECs, and NAP may protect rabbit IPECs from ultra-violet damage.

关 键 词：寡肽类 基因融合 色素上皮 眼 转染 

分 类 号：R773.4[医药卫生—眼科]