陳慧梅,曹廣力,薛仁宇,貢成良
蘇州大學(xué)基礎(chǔ)醫(yī)學(xué)與生物科學(xué)學(xué)院,蘇州 215123
非轉(zhuǎn)座子載體介導(dǎo)的穩(wěn)定轉(zhuǎn)化家蠶BmN細(xì)胞表達(dá)人粒細(xì)胞-巨噬細(xì)胞集落刺激因子
陳慧梅,曹廣力,薛仁宇,貢成良
蘇州大學(xué)基礎(chǔ)醫(yī)學(xué)與生物科學(xué)學(xué)院,蘇州 215123
為了建立非轉(zhuǎn)座子載體介導(dǎo)的持續(xù)表達(dá)外源基因的轉(zhuǎn)化家蠶BmN細(xì)胞系,將家蠶核型多角體病毒極早期基因(ie-1)啟動子控制的人粒細(xì)胞-巨噬細(xì)胞集落刺激因子(hGM-CSF)基因的表達(dá)盒克隆至 pIZT/V5-His,獲得重組載體pIZT-IE-hGM-CSF,該載體轉(zhuǎn)染家蠶BmN細(xì)胞后,通過博萊霉素(Zeocin)篩選獲得了穩(wěn)定轉(zhuǎn)化細(xì)胞系IE-hGM-CSF。轉(zhuǎn)基因細(xì)胞基因組經(jīng)PCR鑒定,成功檢測到ie-hGM-CSF,Western blotting分析結(jié)果顯示轉(zhuǎn)化細(xì)胞表達(dá)的重組hGM-CSF的大小為22 kDa,ELISA檢測結(jié)果顯示hGM-CSF在轉(zhuǎn)化細(xì)胞系里的表達(dá)水平大約為2 814.7 pg/106個(gè)細(xì)胞。
轉(zhuǎn)化,pIZT/V5-His,hGM-CSF,BmN細(xì)胞
Abstract:To develop the stable transformants of the silkworm(Bombyx mori)BmN cells that could continuously express the exogenous gene based on a non-transposon vector, an expression cassette containing human granucyto-macrophage colony-stimulating factor(hGM-CSF)gene driven byie-1 promoter fromB.morinucleopolyhedrovirus was inserted into pIZT-V5-His to form a recombinant vector pIZT-IE-hGM-CSF, followed by transfecting the constructant into BmN cells, the stable ie-hGM-CSF cell lines were obtained after being selected with Zeocin.PCR result using the genomic DNA of the transformed BmN cells as template illustrated a specific fragment ofie-hGM-CSF, and Western blotting analysis using an antibody against hGM-CSFdemonstrated a specific band with a molecular weight of 22 kDa in the transformed cells,meanwhile, the expression level of hGM-CSF determined by ELISA was about 2 814.7 pg in 106transformed BmN cells.
Keywords:transformation, pIZT/V5-His, hGM-CSF, BmN cells
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