Controlled gene expression with a reverse tetracycline-regulated retroviral vector (RTRV) system

被引:53
作者
Watsuji, T
Okamoto, Y
Emi, N
Katsuoka, Y
Hagiwara, M
机构
[1] TOKYO MED & DENT UNIV,MED RES INST,DEPT ENDOCRINOL,BUNKYO KU,TOKYO,JAPAN
[2] NAGOYA UNIV,SCH MED,DEPT INTERNAL MED,NAGOYA,AICHI 466,JAPAN
[3] OSAKA MED COLL,DEPT UROL,TAKATSUKI,OSAKA 569,JAPAN
关键词
D O I
10.1006/bbrc.1997.6705
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A retroviral vector was constructed with an autoregulatory cassette to allow expression of the gene of interest in response to oral administration of doxycycline (Dox) in vivo. The cassette contains all the components of the reverse tetracycline-regulated (rtTA) system, a drug selectable marker with the internal ribosome entry site and the gene of interest (GFP). FAGS analyses showed an induction of GFP-fluorescence of two orders of magnitude in retrovirus-infected 208F cells dependent on the amount of Dox in the medium. Furthermore, oral administration of Dox resulted in GFP expression in transplanted 208F cells in the peritoneal cavity of nude mice. Thus this reverse tetracycline-regulated retroviral vector (RTRV) system simplifies the delivery of controllable genes to cultured and implanted cells. It is hoped that this approach may pave the way to controlled gene expression during a particular window of time in gene therapy applications. (C) 1997 Academic Press.
引用
收藏
页码:769 / 773
页数:5
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