使用CIMmultus单质OH列染色学用于治疗目的的细菌菌体净化
Arne Echterhof1,2, Tejas Dharmaraj1, Patrick Blankenberg1
1Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
bioRxiv : the preprint server for biology
|February 20, 2025
概括
使用单体色谱的细菌菌体净化有效地去除内毒素和宿主蛋白质,用于潜在的抗生素耐药性感染疗法. 这种方法产生了适合静脉注射的符合治疗标准的样本.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 生物制药制造业 生物制药制造业
背景情况:
- 菌体是感染细菌的病毒,正在被探索作为抗生素耐药性感染的治疗方法.
- 有效的细菌菌体净化对于治疗应用至关重要,特别是从gram负细菌溶解物中去除内毒素和宿主蛋白质.
- 目前的净化方法在临床级生产的可扩展性和效率方面面临挑战.
研究的目的:
- 评估CIMmultus OH-单质色谱对净化感染Pseudomonas aeruginosa的尾巴菌的效率.
- 评估细菌准备剂中宿主蛋白和内毒素的减少.
- 为了确定纯化的细菌菌体是否适合用于治疗用途,特别是用于静脉注射.
主要方法:
- 研究了7种大小相似的尾状菌体 (Myoviridae和Sifhoviridae家族) 感染Pseudomonas aeruginosa.
- 采用优选排斥色谱与酸盐梯度用于净化.
- 分析了菌体恢复率,宿主蛋白减少和净化后的内毒素水平.
主要成果:
- 在宿主蛋白质 (平均98.5%) 和内毒素 (高达6.30日志减少) 中实现了显著的减少.
- 所有净化的样本都达到人体静脉注射内毒素限值.
- 菌体恢复率各不相同,较小的菌体恢复率为85-95%,较大的菌体恢复率较低.
- 在大多数样本中,在净化后观察到DNA含量增加.
结论:
- CIMmultus OH-单质色谱是一种有希望的,可扩展和可重复的临床级细菌菌体净化方法.
- 染色学策略有效地去除污染物,产生符合治疗标准的菌体制剂.
- 这种方法适合工业菌体生产,因为它的效率和缺乏危险化学品.
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