有纤维化过度表达和保留MASH治疗的RNA纳米疗法
Xinzhu Shan1,2, Zhiqiang Zhao1,2,3, Pingping Lai4
1State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China.
Nature communications
|August 27, 2024
概括
一种新的纤维化过度表达和保留 (FORT) 策略使用脂质纳米颗粒 (LNP) 来输送mRNA,以增强纤维化肝脏中的蛋白质表达,改善代谢功能障碍相关的脂肪肝炎 (MASH) 的治疗. 这种方法增加了治疗性蛋白质的保留,并减少了MASH模型中的毒性.
科学领域:
- 生物技术和生物医学工程 生物技术和生物医学工程
- 药物输送系统 药物输送系统
- 肝病学和肝脏疾病研究研究
背景情况:
- 代谢功能障碍相关的脂肪肝炎 (MASH) 由于细胞外基质 (ECM) 积累而带来重大治疗挑战,阻碍了向药物输送和保留.
- 现有的基于蛋白质的疗法在有效达到和留在纤维性肝脏微环境中的局限性.
研究的目的:
- 开发一种新的治疗策略,称为纤维化过度表达和保留 (FORT),用于MASH治疗.
- 设计脂质纳米颗粒 (LNPs) 来增强mRNA传递和蛋白质表达,特别是在纤维性肝脏区域.
- 改善纤维性病变的ECM内的治疗性蛋白质保留,减少系统性毒性.
主要方法:
- 视网衍生物脂质纳米颗粒 (LNP) 的设计与碳酸-视网来增强mRNA传递和纤维化肝脏中的蛋白质表达.
- 修改mRNA以促进治疗性蛋白质在细胞外基质 (ECM) 中的定.
- 设计具有内源原结合域的治疗蛋白质,以改善ECM保留.
- 在三种雄性动物MASH模型中对编码融合蛋白的纤维化向LNP进行体内评估.
主要成果:
- 与酒精或雌激素-类药物相比,carboxyl-retinoid LNPs在纤维性肝脏中的mRNA介导蛋白质表达得到了超过10倍的增强.
- 碳基-回体LNP表面修饰改善了蛋白质结合和膜融合.
- 工程融合蛋白在纤维性病变中显著增加保留率,并减少了全身毒性.
- 编码融合蛋白的纤维化向LNP在临床前MASH模型中显示出更高的治疗效率.
结论:
- 使用专门的LNP和工程蛋白质的FORT策略,通过增强纤维化肝脏中的治疗性蛋白质表达和保留来有效地准和治疗MASH.
- 这种方法为治疗MASH和其他纤维性疾病提供了一个有前途的替代方案,而传统的蛋白质注射是不理想的.
- 开发的技术证明了在纤维状况下改善药物输送和治疗结果的潜力.
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