结合
细胞内
肠沙门氏菌
血清型
适体
沙门氏菌
微生物学
DNA
抗菌剂
细菌
胶体金
肽
病毒学
生物
分子生物学
材料科学
生物化学
纳米颗粒
纳米技术
数学分析
遗传学
数学
作者
Ji-Hyun Yeom,Boeun Lee,Dae-Young Kim,Jong-Kook Lee,Suk Kim,Jang‐Ho Bae,Yoonkyung Park,Kangseok Lee
出处
期刊:Biomaterials
[Elsevier]
日期:2016-10-01
卷期号:104: 43-51
被引量:101
标识
DOI:10.1016/j.biomaterials.2016.07.009
摘要
Antimicrobial peptides (AMPs) are a promising new class of antibacterial compounds. However, their applications in the treatment of intracellular pathogenic bacteria have been limited by their in vivo instability and low penetrating ability into mammalian cells. Here, we report that gold nanoparticles conjugated with DNA aptamer (AuNP-Apt) efficiently delivered AMPs into mammalian living systems with enhanced stability of the AMPs. C-terminally hexahistidine-tagged A3-APO (A3-APOHis) AMPs were loaded onto AuNPs conjugated with His-tag DNA aptamer (AuNP-AptHis) by simple mixing and were delivered into Salmonella enterica serovar Typhimurium (S. Typhimurium)-infected HeLa cells, resulting in the increased viability of host cells due to the elimination of intracellular S. Typhimurium cells. Furthermore, the intravenous injection of AuNP-AptHis loaded with A3-APOHis into S. Typhimurium-infected mice resulted in a complete inhibition of S. Typhimurium colonization in the mice organs, leading to 100% survival of the mice. Therefore, AuNP-AptHis can serve as an innovative platform for AMP therapeutics to treat intracellular bacterial infections in mammals.
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