生物工程合成的肠道细菌合成了levodopa,在帕金森病模型中缓解了运动缺陷
Piyush Padhi1, Ahmed Abdalla2, Benjamin Schneider2
1Isakson Center for Neurological Disease Research, University of Georgia, Athens, GA 30602, USA; Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
Cell host & microbe
|October 31, 2025
概括
工程细菌不断生产L-3,4-二基氨 (L-DOPA) 用于帕金森病治疗. 这种新型微生物系统提供了一个潜在的非侵入性,连续的输送方法,在临床前模型中改善运动功能和情绪.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 生物技术是生物技术.
背景情况:
- L-3,4-Dihydroxyphenylalanine (L-DOPA) 是对帕金森病 (PD) 的主要治疗方法.
- 目前的L-DOPA疗法涉及口服与脱酶抑制剂,导致脉动性分娩和并发症.
- 需要持续的,非侵入性的L-DOPA输送方法.
研究的目的:
- 开发一种基因工程微生物系统,用于连续的L-DOPA合成和输送.
- 在PD的临床前模型中评估这种工程系统的体内疗效.
主要方法:
- 构建一个可编程,可定位,基因工程E. coli Nissle 1917系统 (EcNL-DOPA) 的L-DOPA合成.
- 在健康和帕金森氏症小鼠和狗模型中,口服使用EcNL-DOPA与benserazide.
- 药理动力学和药理动力学研究,包括运动性能和行为评估.
主要成果:
- EcNL-DOPA成功地从L-氨酸中合成了L-DOPA,用于系统分布.
- 口服维持了治疗性血L-DOPA度,并增加了脑中的多巴胺水平.
- 在所有测试模型中都观察到改善运动性能和减少类似抑郁症的行为,没有任何不良影响.
结论:
- 该EcNL-DOPA系统提供了一个连续的,非侵入性的微生物药物递送平台.
- 这种方法表明了对帕金森病和其他慢性神经系统疾病的潜在人类研究的翻译可行性.
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