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Expression of the hIGF-I gene driven by the Fhx/P25 promoter in the silk glands of germline silkworm and transformed BmN cells

文献类型: 外文期刊

作者: Li, Yanmei 1 ; Cao, Guangli 1 ; Wang, Yang 1 ; Xue, Renyu 1 ; Zhou, Wenlin 3 ; Gong, Chengliang 1 ;

作者机构: 1.Soochow Univ, Sch Biol & Basic Med Sci, Suzhou 215123, Peoples R China

2.Soochow Univ, Natl Engn Lab Modern Silk, Suzhou 215123, Peoples R China

3.Zhejiang Acad Agr Sci, Sericulture Res Inst, Hangzhou 310021, Zhejiang, Peoples R China

4.Soochow Univ, Preclin Med & Biol Sci Coll, Suzhou 215123, Peoples R China

关键词: BmN cell;Bombyx mori;Fhx/P25 promoter;hIGF-I;Silk gland;Transgenic silkworm

期刊名称:BIOTECHNOLOGY LETTERS ( 影响因子:2.461; 五年影响因子:2.457 )

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收录情况: SCI

摘要: The expression of the human insulin-like growth factor (hIGF-I) gene driven by the Fhx/P25 promoter in the silk glands of transgenic silkworms (Bombyx mori) and in transformed silkworm cells, was achieved using BmN cells transfected with a piggyBac vector, pigA3GFP-Fhx/P25-hIGF-ie-neo containing a neomycin-resistance gene (neo), a green fluorescent protein gene (gfp), an hIGF-I gene, and a helper plasmid containing the piggyBac transposase sequence under the control of the B. mori actin 3 (A3) promoter. We selected stably transformed BmN cells expressing hIGF-I using the antibiotic G418. The expression level of hIGF-I was about 450pg in 310 super(6) cells, determined by ELISA. The piggyBac vector was transferred into the silkworm eggs using sperm-mediated gene transfer. The expression level of hIGF-I per gram fresh posterior silk glands of G4 transgenic silkworms was approx. 150ng.

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