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通过心肺旁路进行心脏基因输送
M J Davidson1, J M Jones, S M Emani
1Departments of Surgery, Duke University Medical Center, Durham, NC 27710, USA.
Circulation
|July 12, 2001
概括
这项研究表明,在心脏手术期间使用腺病毒载体进行高效的心脏基因传递. 该方法实现了高心肌表达,在其他器官中没有可检测的非目标效应.
科学领域:
- 心血管研究研究心血管研究
- 基因治疗 基因治疗
- 分子心脏病学分子心脏病学
背景情况:
- 目前的心脏基因疗法面临着心肌表达有限和心脏外传播风险的挑战.
- 心脏外科手术为增强和心脏特异性基因传递提供了一个潜在的窗口.
研究的目的:
- 为了评估腺病毒载体在心肺旁路和心脏丧期间的输送的疗效和心脏选择性.
- 在临床相关的模型中评估心肌转基因表达和潜在的非目标效应.
主要方法:
- 新生猪小猪经历了中枢切除术,心肺旁路术和心性停止.
- 编码beta-galactosidase或人类β(2) - 上腺素受体的腺病毒载体通过心肌的管传递.
- 在一周后,分析了心脏,肺部和肝脏组织中的基因表达.
主要成果:
- 观察到beta-galactosidase的跨体心肌表达.
- 人类β2-上腺素受体的输送显著增加了左心室受体密度 (396%的对照).
- 在肝脏或肺组织中没有检测到转基因表达,也没有明显的心脏炎症.
结论:
- 在心肺旁路和心性骤停期间,冠状腺病毒载体的冠状内输送使心肌细胞的有效吸收和表达成为可能.
- 这种技术表明了实现心脏选择性基因传递的有希望的策略,最大限度地减少非目标转基因表达.
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