Generation of a prostate epithelial cell-specific Cre transgenic mouse model for tissue-specific gene ablation

被引:304
作者
Wu, XT
Wu, J
Huang, JP
Powell, WC
Zhang, JF
Matusik, RJ
Sangiorgi, FO
Maxson, RE
Sucov, HM
Roy-Burman, P
机构
[1] Univ So Calif, Keck Sch Med, Dept Pathol, Los Angeles, CA 90089 USA
[2] Univ So Calif, Keck Sch Med, Dept Biochem & Mol Biol, Los Angeles, CA 90089 USA
[3] Vanderbilt Univ, Sch Med, Dept Urol Surg, Nashville, TN 37232 USA
[4] Univ So Calif, Keck Sch Med, Dept Cell & Neurobiol, Los Angeles, CA 90089 USA
关键词
bacteriophage DNA recombinase; prostate-specific gene knockout; RXR alpha gene deletion; prostatic epithelial-specific gene targeting; transgenic mice; R26R lacZ allele;
D O I
10.1016/S0925-4773(00)00551-7
中图分类号
Q [生物科学];
学科分类号
07 [理学]; 0710 [生物学]; 09 [农学];
摘要
To facilitate the elucidation of the genetic events that may play an important role in the development or tumorigenesis of the prostate gland, we have generated a transgenic mouse lint: with prostate-specific expression of Cre recombinase. This line, named PB-Cre4 carries the Cre gene under the control of a composite promoter. ARR(2)PB which is a derivative: of the rat prostate-specific probasin (PB) promoter. Based on RT-PCR detection of Cre mRNA in PB-Cre4 mice or Cre-mediated activation of LacZ activity in PB-Cre4/R26R double transgenic mice, it is conclusively demonstrated that Cre expression is post-natal and prostatic epithelium-specific. Although the Cre recombination is detected in all lobes of the mouse prostate, there is a significant difference in expression levels between the lobes, being highest in the lateral lobe, followed by the ventral, and then the dorsal and anterior lobes. Besides the prostate gland, no other tissues of the adult PB-Cre4 mice demonstrate significant Cre expression, except For a few scattered areas in the gonads and the stroma of the seminal vesicle. By crossing the PB-Cre4 animals with floxed RXR alpha allelic mice, we demonstrate that mice, whose conventional knockout of this gene is lethal in embryogenesis, could be propagated with selective inactivation of RXR alpha in the prostate. Taken together, the results show that the PB-Cre4 mice have high levels of Cre expression and a high penetrance in the prostatic epithelium. The PB-Cre4 mice will be a useful resource for genetic-based studies on prostate development and prostatic disease. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:61 / 69
页数:9
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