本文選題：啟動子克隆 + 活性分析��； 參考：《中國家禽》2017年01期

【摘要】：啟動子在重組火雞皰疹病毒(HVT)載體疫苗中起著至關重要的作用,內源性啟動子活性較弱,受載體病毒自身的復制調控。研究通過預測分析HVT(FC126株)囊膜糖蛋白(g B)啟動子,將其克隆并與經密碼子優(yōu)化的H7N9亞型禽流感病毒的HA基因構建表達盒質粒,再進一步通過間接免疫熒光試驗和熒光定量PCR比較其與外源性強啟動子CMV和馬立克氏病病毒(MDV,CVI988株)g B啟動子的轉錄表達活性。結果表明:3種啟動子均能使目的基因在體外獲得轉錄表達,CMV啟動子的活性高于內源性g B啟動子,而HVT的g B與MDV的g B表達活性差異不顯著。研究結果為重組HVT載體疫苗啟動子的選擇提供了一定參考。
[Abstract]:The promoter plays a vital role in the recombinant turkey herpes virus (HVT) carrier vaccine, and the endogenous promoter activity is weak and is regulated by the replication of the carrier virus itself. The study of the promoter of the HVT (FC126 strain) membrane glycoprotein (g B) was cloned and the HA gene of the H7N9 subtype of avian influenza virus, which was optimized by the codon, was predicted and analyzed. The expression of plasmid was constructed, and then by indirect immunofluorescence test and fluorescence quantitative PCR, the transcriptional activity of G B promoter was compared with the exogenous promoter CMV and Marek's disease virus (MDV, CVI988 strain). The results showed that the 3 promoters could make the target gene transcriptional expression in vitro, and the activity of CMV promoter was higher than that of endogenous. G B promoter, while HVT g B and MDV g B expression activity showed no significant difference. The results provide a reference for the selection of recombinant HVT vector vaccine promoter.
【作者單位】： 揚州大學獸醫(yī)學院;江蘇省人獸共患病學重點實驗室;江蘇省動物重要疫病與人獸共患病防控協(xié)同創(chuàng)新中心;
【基金】：國家重點研發(fā)計劃項目(2016YFD0500202、2016YED0501601) 十二五”農村領域國家科技計劃項目(2015BAD12B01-3) 江蘇高校優(yōu)勢學科建設工程資助項目(PAPD)
【分類號】：S852.65

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