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过表达小鼠干扰素调节因子8抑制RAW264.7细胞向破骨样细胞的分化

Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology(2014)

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Abstract
目的 构建及鉴定小鼠干扰素调节因子8(IRF8)重组腺病毒Ad-IRF8,并观察过表达的IRF8对小鼠可溶性核因子κB受体活化因子配体(sRANKL)诱导的RAW264.7细胞分化的影响.方法 PCR扩增IRF8,亚克隆到穿梭载体pAdTrack-CMV中,PimeⅠ线性化后与骨架载体pAdEasy-1在大肠杆菌BJ5183中同源重组获得重组腺病毒载体pAd-IRF8.pAd-IRF8经PacⅠ线性化后转染AD293细胞,包装出重组腺病毒(Ad-IRF8).Ad-IRF8感染小鼠RAW264.7细胞,经半定量反转录PCR(RT-PCR)和Western blot法检测IRF8的过表达,通过抗酒石酸酸性磷酸酶(TRAP)染色检测IRF8对sRANKL诱导的RAW264.7细胞分化的影响.结果 成功构建携带IRF8基因的穿梭载体pAdTrack-IRF8-CMV和重组载体pAd-IRF8,并且在AD293细胞中成功包装出重组腺病毒Ad-IRF8.半定量RT-PCR和Western blot法证实IRF8在RAW264.7细胞中有过表达,TRAP染色结果显示过表达的IRF8有效抑制RAW264.7细胞向破骨样细胞分化.结论 成功构建重组腺病毒Ad-IRF8,在RAW264.7细胞中检测到了IRF8过表达,并能有效抑制RAW264.7细胞向破骨样细胞分化.
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Key words
mouse irf8,cells,osteoclast-like
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