腺病毒介导酪氨酸羟化酶基因体外治疗大鼠泌乳素瘤

目的 探讨腺病毒介导酪氨酸羟化酶(TH)基因治疗大鼠垂体泌乳素(PRL)瘤的可能性。方法 应用细攻内同源重组法构建携带大鼠TH基因并含绿色荧光蛋白(GFP)报告基因的复制缺陷型腺病毒载体Ad—GFP—TH和末携带任何外源基因的复制缺陷型空载体腺病毒Ad—GFP,并以大鼠泌乳素瘤细胞株MMQ为靶细胞,探讨腺病毒介导TH基因治疗对MMQ细胞生长和PRL分泌的影响。结果 成功构建重组腺病毒Ad—GFP—TH及Ad—GFP;转染重组腺病毒Ad—GFP—TH后,MMQ细胞的生长和PRL分泌均受到明显的抑制。结论 基因治疗可能成为垂体泌乳素瘤,尤其是侵袭性垂体泌乳素瘤的有效治疗方法之一。

Gene therapy of rat prolactinomas mediated by adenoviral vectors with rat tyrosine hydroxylase gene

Objective To investigate the potential of gene therapy of rat prolactinomas mediated by adenoviral vectors with a gene encoding rat tyrosine hydroxylase. Methods Recombinant replication-deficient adenovirus named Ad-GFP-TH with rat TH-cDNA and control adenovirus named Ad-GFP were constructed by homologous recombination in bacterial cells. The rat pituitary prolactinoma cell line MMQ are chosen as the target cells to study the effect of gene therapy on their growth and prolactin secretion mediated by Ad-GFP-TH. Results Recombinant Ad-GFP-TH and Ad-GFP were successfully reconstructed. Transfection of MMQ cells with Ad-GFP-TH not only restrained their growth but also decreased their PRL secretion. Conclusion Gene therapy may serve for a potential treatment for prolactinomas, especially invasive prolactinomas.