新型抗体-抗生素结合物可以消除细胞内黄金菌
Sophie M Lehar1, Thomas Pillow2, Min Xu3
1Infectious Diseases Department, Genentech Inc., South San Francisco, California 94080, USA.
Nature
|November 5, 2015
概括
细胞内黄金葡萄球菌形成了弹性储存体,可以避开抗生素. 一种新型抗体-抗生素结合物有效向并消除这些持久细菌, 提供一种新的治疗策略.
科学领域:
- 微生物学
- 免疫学
- 传染性疾病
背景情况:
- 金黄色葡萄球菌主要被视为细胞外病原体.
- 黄金菌的细胞内存活可以形成抗生素保护的储存库,导致持续的感染和治疗失败.
- 了解细胞内细菌库对于开发有效疗法至关重要.
研究的目的:
- 研究细胞内黄金葡萄球菌作为持久性感染的储存体的作用.
- 开发和评估针对细胞内黄金菌的一种新疗法.
- 与传统抗生素相比,评估新疗法的疗效.
主要方法:
- 在小鼠模型中确认细胞内S. aureus储存.
- 开发一种针对黄金菌的抗体-抗生素结合物 (AAC).
- 评估AAC在治疗黄金色细菌病的有效性.
- 对宿主细胞内的细菌存活率进行评估.
主要成果:
- 证实细胞内S. aureus群体是有毒的储存体,即使在治疗中也能够感染.
- 开发的抗体- 抗生素结合物在消除细胞内黄金色杆菌方面表现出显著的有效性.
- 在治疗S. aureus细菌症方面,AAC的效果优于菌素,突出显示了其对细胞内细菌的有效性.
- 提供了直接证据,表明细胞内黄金菌是侵入性感染的关键因素.
结论:
- 细胞内黄金葡萄球菌 (Staphylococcus aureus) 是一个显著的抗生素耐受性储存体,有助于持续感染.
- 一种新型抗体-抗生素结合剂提供了一种有前途的治疗方法来消灭细胞内黄金色杆菌.
- 针对细胞内细菌库对于克服侵袭性黄金菌感染治疗失败至关重要.
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