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Effect of different forms of light on TGF-β2 expression of guinea pig retinal pigment epithelial cells in vitro
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- Author:
- No author available
- Journal Title:
- INTERNATIONAL EYE SCIENCE
- Issue:
- 10
- DOI:
- 10.3969/j.issn.1672-5123.2012.10.09
- Key Word:
- 光照;聚焦光;离焦光;视网膜色素上皮细胞;转化生长因子-β2;实时荧光定量PCR
Abstract： 目的:探讨不同光照形式对豚鼠视网膜色素上皮(retinal pigment epithelium,RPE)细胞表达转化生长因子-β2(transforming growth factor β2,TGF-β2)的影响.方法:幼年健康豚鼠(2周龄)10只,体外培养RPE细胞,传代、鉴定后,将细胞分为聚焦光组、离焦光组、平行光组和空白对照组,前3组分别接受聚焦光、离焦光(均为将平行光经透镜转化)和平行光照射,空白对照组不接受照射.于照射后24h采用免疫细胞化学法、实时荧光定量PCR法(real-time fluorescence quantitative PCR,RTFQ-PCR)检测细胞中TGF-β2及TGF-β2 mRNA的表达,分析不同光照形式与效应的关系.结果:免疫细胞化学法显示各组TGF-β2表达均为阳性,病理VISTA图像分析软件测量单位面积中平均光密度 (optical density,OD)值进行半定量分析,聚焦光组明显高于其它各组,组间比较有统计学差异(F=11.08,P<0.05);RTFQ-PCR法显示,聚焦光组TGF-β2mRNA表达水平较其它各组明显增加,组间比较有统计学差异(F=133.01,P<0.05).结论:不同形式光线可影响豚鼠RPE细胞TGF-β2表达,以聚焦光最明显.
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