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对抗合成阿片类药物中毒的单克隆抗体
Lauren C Smith1, Paul T Bremer1,2, Candy S Hwang1,3
1Departments of Chemistry, Immunology and Microbial Science, Skaggs Institute for Chemical Biology , The Scripps Research Institute , 10550 N Torrey Pines Road , La Jolla , California 92037 , United States.
Journal of the American Chemical Society
|June 13, 2019
概括
研究人员开发了单克隆抗体 (mAbs) 来治疗合成阿片类药物的过量服用. 这些抗体有效地逆转了小鼠的芬太尼和卡芬太尼效应,为阿片类药物成和过量服用提供了潜在的新疗法.
科学领域:
- 药理学
- 免疫学
- 毒理学
背景情况:
- 像芬太尼这样的合成阿片类药物是美国与毒品相关的死亡的主要原因.
- 非法合成阿片类药物价格低廉,易于获得,强度高,对公众健康构成重大威胁.
- 目前的过量治疗方法如纳洛具有局限性,包括短半衰期.
研究的目的:
- 开发和描述针对芬太尼类药物的单克隆抗体 (mAbs).
- 在合成阿片类药物过量治疗的临床前模型中评估这些mAbs的疗效.
- 探索mAbs作为合成阿片类药物使用障碍和过量使用的潜在治疗策略.
主要方法:
- 在接种芬太尼结合剂疫苗的小鼠中产生单克隆抗体.
- 使用表面等离子体共振 (SPR) 来评估抗体结合亲和力和交叉反应性.
- 在使用致命剂量的芬太尼后,对小鼠抗生素模型和生存研究进行了评估.
- 进行了药理动力学分析和与纳洛的比较.
主要成果:
- 六种混合体产生了具有高结合亲和力 (10^ - 11 M) 和与类似物交叉反应的mAbs.
- 在小鼠中,mAb (6A4) 减弱了芬太尼和卡芬太尼的作用,并改善了生存率.
- 通过将药物隔离在血液中,减少了药物的生物分发到大脑.
- 在小鼠中,6A4逆转了阿片类药物诱导的抗受,并且比纳洛的半衰期更长.
结论:
- 单克隆抗体是合成阿片类药物过量治疗的新方法.
- 由于6A4的半衰期较长,可以防止再毒化.
- 对于急性阿片类药物过量服用和阿片类药物使用障碍来说,mAbs是潜在的治疗方式.
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