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Bacteria-driven bio-electroactive sterilization
DOI:10.1039/D5SC04234H.png)
摘要
En 中文
开发响应性抗菌材料对于解决抗生素滥用问题至关重要。虽然许多材料能响应pH、光和酶等间接外部刺激,但细菌自身代谢仍是一种未被充分利用的精确灭菌激活机制。在此,我们提出了一种自维持生物反应器,由细菌-还原氧化石墨烯-铜生物杂化材料(BrGO–Cu)组成,其中活细菌通过代谢重定向激活氧化石墨烯-铜离子(GO–Cu)以实现自我终止。细菌胞外电子转移(BEET)级联还原氧化石墨烯,促进Cu²⁺向Cu⁺的转化,并最终通过•OH生成杀灭细菌。同时,BrGO–Cu生物反应器可有效阻止生物膜形成,且细胞毒性可忽略不计。值得注意的是,该细菌响应型生物反应器在重新捕获活细菌后展现出持久的杀菌活性,经过多达129代传代培养仍无细菌耐药性。我们的工作开创了一种BEET重定向策略,通过精确控制的反馈回路实现病原体特异性、长效的抗菌保护。
Keyword:
bacterial self-metabolism
graphene oxide-copper biohybrids
extracellular electron transfer
antibacterial materials
biofilm prevention
期刊
IF:
7.4
论文数:
1.7W
被引数:
9.3W
机构
暂无机构信息
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