当前位置: X-MOL 学术Adv. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
On-Demand Bacterial Reactivation by Restraining within a Triggerable Nanocoating.
Advanced Materials ( IF 27.4 ) Pub Date : 2020-07-19 , DOI: 10.1002/adma.202002406
Pingping Feng 1 , Zhenping Cao 1 , Xinyue Wang 1 , Juanjuan Li 1 , Jinyao Liu 1
Affiliation  

Bacteria have been widely exploited as bioagents for applications in diagnosis and treatment, benefitting from their living characteristics including colonization, rapid proliferation, and facile genetic manipulation. As such, bacteria being tailored to perform precisely in the right place at the right time to avoid potential side effects would be of great importance but has proven to be difficult. Here, a strategy of on‐demand bacterial reactivation is described by individually restraining within a triggerable nanocoating. Upon reaching at a location of interest, nanocoatings can be triggered to dissolution in situ and subsequently decoat the bacteria which are able to recover their bioactivities as needed. It is demonstrated that gut microbiota coated with an enteric nanocoating can respond to gastrointestinal environments and reactivate in the intestine by a pH‐triggered decoating. In virtue of this unique, coated bacteria remain inactive following oral administration to exempt acidic insults, while revive to restore therapeutic effects after gastric emptying. Consequently, improved oral availability and treatment efficacy are achieved in two mouse models of intestinal infection. Bacteria restrained by a triggerable nanocoating represent a smart therapeutic that can take effect when necessary. On‐demand bacterial reactivation suggests a robust platform for the development of precision bacterial‐mediated bioagents.

中文翻译:

通过限制可触发的纳米涂层内的按需细菌活化。

细菌得益于其定居,快速增殖和简便的基因操作等生活特征,已被广泛用作诊断和治疗中的生物制剂。这样,将细菌定制为在正确的时间在正确的位置精确地执行以避免潜在的副作用将是非常重要的,但事实证明是困难的。在此,通过单独限制在可触发的纳米涂层内来描述按需细菌活化的策略。到达目标位置后,可以触发纳米涂层原位溶解,然后去除细菌的涂层,从而能够根据需要恢复其生物活性。事实证明,涂有肠溶性纳米涂层的肠道菌群可以响应胃肠道环境,并通过触发pH的脱涂层在肠道内重新活化。由于这种独特的作用,包被的细菌在口服给药后仍保持无活性,从而免除了酸性损伤,而在胃排空后恢复了治疗效果。因此,在两种肠道感染小鼠模型中,口服利用率和治疗效果均得到改善。被可触发的纳米涂层抑制的细菌代表了一种聪明的疗法,可以在必要时生效。按需细菌激活提示了开发精密细菌介导生物制剂的强大平台。口服给药后,被包被的细菌保持无活性,以免遭受酸性损伤,而在胃排空后恢复活性以恢复治疗效果。因此,在两种肠道感染小鼠模型中,口服利用率和治疗效果均得到改善。被可触发的纳米涂层抑制的细菌代表了一种聪明的疗法,可以在必要时生效。按需细菌激活提示了开发精密细菌介导生物制剂的强大平台。口服给药后,被包被的细菌保持无活性,以免遭受酸性损伤,而在胃排空后恢复活性以恢复治疗效果。因此,在两种肠道感染的小鼠模型中,口服利用率和治疗效果均得到改善。被可触发的纳米涂层抑制的细菌代表了一种聪明的疗法,可以在必要时生效。按需细菌激活提示了开发精密细菌介导生物制剂的强大平台。
更新日期:2020-08-26
down
wechat
bug