In this study, we infected human glioma U251 cells with a replication-defective recombinant adenovirus carrying the p16 gene. This adenovirus constructed was able to transfect exogenous p16 into the human glioma cells...In this study, we infected human glioma U251 cells with a replication-defective recombinant adenovirus carrying the p16 gene. This adenovirus constructed was able to transfect exogenous p16 into the human glioma cells efficiently, and direct a high level of p16 protein expression. Tumor-inhibition experiments demonstrated that treatment with the adenovirus-p16 significantly inhibited the growth of glioma cells in vitro as well as the in vivo development of tumors in nude mice bearing a brain glioma. The combination of adenovirus-p16 gene treatment and X-ray irradiation resulted in a greater inhibition of tumor growth. Adenovirus-mediated p16 gene therapy conferred a significant antitumor effect against human glioma cells both in vitro and in vivo, and that there was a synergistic effect when X-ray irradiation was also used.展开更多
Objective: Angiotensin Ⅱ is a growth-promoting factor for vascular smooth muscle cells in culture andin the intact animal. The biological effects of angiotensin Ⅱ are manifested only by binding to specific receptors...Objective: Angiotensin Ⅱ is a growth-promoting factor for vascular smooth muscle cells in culture andin the intact animal. The biological effects of angiotensin Ⅱ are manifested only by binding to specific receptors oncell membranes. In the study, we observed that the effect of rat antisense AT1B gene transfer mediated by adenoviral vector-on neointimal proliferation following rat carotid injury. Methods: Antisense AT1B gene was transductedinto the carotid by adenoviral vector after carotid bal1oon injury and the restenosis model was established in SD rat.We measured neointima/media area ratio in local artery at day 21 after gene transfer. Results: Rat antisense AT1Bgene was successfully transducted into local carotid after the carotid balloon injury. Neointima/media area ratiowas significantly reduced (47 %, P<0. 01) at day 21 after gene transfer compared with the control group. Conclusion: The results suggest it is possible that antisense AT1B gene transfer as a potential therapeutic approach prevent neointimal hyperplasia.展开更多
基金Science and Technology Fund Program of Shaanxi Province, No. 2002K10-G3Xi'an Jiaotong University Innovation Fund, No. 0203207
文摘In this study, we infected human glioma U251 cells with a replication-defective recombinant adenovirus carrying the p16 gene. This adenovirus constructed was able to transfect exogenous p16 into the human glioma cells efficiently, and direct a high level of p16 protein expression. Tumor-inhibition experiments demonstrated that treatment with the adenovirus-p16 significantly inhibited the growth of glioma cells in vitro as well as the in vivo development of tumors in nude mice bearing a brain glioma. The combination of adenovirus-p16 gene treatment and X-ray irradiation resulted in a greater inhibition of tumor growth. Adenovirus-mediated p16 gene therapy conferred a significant antitumor effect against human glioma cells both in vitro and in vivo, and that there was a synergistic effect when X-ray irradiation was also used.
文摘Objective: Angiotensin Ⅱ is a growth-promoting factor for vascular smooth muscle cells in culture andin the intact animal. The biological effects of angiotensin Ⅱ are manifested only by binding to specific receptors oncell membranes. In the study, we observed that the effect of rat antisense AT1B gene transfer mediated by adenoviral vector-on neointimal proliferation following rat carotid injury. Methods: Antisense AT1B gene was transductedinto the carotid by adenoviral vector after carotid bal1oon injury and the restenosis model was established in SD rat.We measured neointima/media area ratio in local artery at day 21 after gene transfer. Results: Rat antisense AT1Bgene was successfully transducted into local carotid after the carotid balloon injury. Neointima/media area ratiowas significantly reduced (47 %, P<0. 01) at day 21 after gene transfer compared with the control group. Conclusion: The results suggest it is possible that antisense AT1B gene transfer as a potential therapeutic approach prevent neointimal hyperplasia.