向的sarcoplasmic网膜Ca2+ ATPase 2a基因传递,以恢复失败的心脏的电稳定性
Michael J Cutler1, Xiaoping Wan, Bradley N Plummer
1Heart and Vascular Center, MetroHealth Campus, Case Western Reserve University, 2500 MetroHealth Dr, Hamann 3, Cleveland, OH 44109-1998, USA. mcutler@metrohealth.org
Circulation
|September 29, 2012
概括
在失败的心脏中,基因转移恢复了sarcoplasmic reticulum Ca(2+) ATPase 2a (SERCA2a),通过抑制心脏替代体,改善了心脏功能并减少了危及生命的心律失常.
科学领域:
- 心脏病学 心脏病学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 体网膜Ca(2+) ATPase 2a (SERCA2a) 对于心脏替代过程至关重要.
- 心力衰竭 (HF) 损害了的处理,并降低了SERCA2a,增加了替代剂的敏感性.
- 通过基因转移恢复SERCA2a被假设可以减少高频率中的心脏替代体.
研究的目的:
- 为了研究AAV9.SERCA2a基因转移在心力衰竭 (HF) 试验猪模型中的有效性.
- 确定SERCA2a恢复是否可以改善心脏替代并改善心脏功能.
- 评估对心室节律失常的影响.
主要方法:
- 成年试验猪被分配到控制,HF或HF与AAV9.SERCA2a基因转移组.
- 评估左心室功能,肌细胞处理和蛋白质表达.
- 评估对心脏替代剂和诱导性心室节律失常的敏感性.
主要成果:
- HF导致左心室功能下降,肌细胞处理受损,并减少了SERCA2a表达.
- 高频动物对心脏替代药物的敏感性增加.
- AAV9.SERCA2a基因转移改善了心脏功能,抑制了替代体,并减少了心室节律失常.
结论:
- 在失败的心脏中转移SERCA2a基因可以增强收缩功能.
- 通过恢复SERCA2a,通过改善心脏替代体和质网膜Ca2+) 泄漏,改善电稳定性.
- 这种方法为心力衰竭相关的心律失常提供了潜在的治疗策略.
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