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Inhibiting Methicillin-Resistant Staphylococcus aureus by Tetrahedral DNA Nanostructure-Enabled Antisense Peptide Nucleic Acid Delivery
Nano Letters ( IF 9.6 ) Pub Date : 2018-08-08 00:00:00 , DOI: 10.1021/acs.nanolett.8b02166 Yuxin Zhang 1 , Wenjuan Ma 1 , Ying Zhu 2 , Sirong Shi 1 , Qianshun Li 1 , Chenchen Mao 1 , Dan Zhao 1 , Yuxi Zhan 1 , Jiye Shi 2 , Wei Li 2 , Lihua Wang 2 , Chunhai Fan 2 , Yunfeng Lin 1
Nano Letters ( IF 9.6 ) Pub Date : 2018-08-08 00:00:00 , DOI: 10.1021/acs.nanolett.8b02166 Yuxin Zhang 1 , Wenjuan Ma 1 , Ying Zhu 2 , Sirong Shi 1 , Qianshun Li 1 , Chenchen Mao 1 , Dan Zhao 1 , Yuxi Zhan 1 , Jiye Shi 2 , Wei Li 2 , Lihua Wang 2 , Chunhai Fan 2 , Yunfeng Lin 1
Affiliation
One of the biggest obstacles for the use of antisense oligonucleotides as antibacterial therapeutics is their limited uptake by bacterial cells without a suitable carrier, especially in multi-drug-resistant bacteria with a drug efflux mechanism. Existing vectors, such as cell-penetrating peptides, are inefficient and nontargeting, and accordingly are not ideal carriers. A noncytotoxic tetrahedral DNA nanostructure (TDN) with a controllable conformation has been developed as a delivery vehicle for antisense oligonucleotides. In this study, antisense peptide nucleic acids (asPNAs) targeting a specific gene (ftsZ) were efficiently transported into methicillin-resistant Staphylococcus aureus cells by TDNs, and the expression of ftsZ was successfully inhibited in an asPNA-concentration-dependent manner. The delivery system specifically targeted the intended gene. This novel delivery system provides a better platform for future applications of antisense antibacterial therapeutics and provides a basis for the development of a new type of antibacterial drug for multi-drug-resistant bacterial infections.
中文翻译:
四面体DNA纳米结构使反义肽核酸传递抑制耐甲氧西林金黄色葡萄球菌。
使用反义寡核苷酸作为抗菌治疗剂的最大障碍之一是在没有合适载体的情况下细菌细胞对它们的摄取有限,特别是在具有药物外排机制的耐多药细菌中。现有的载体,例如穿透细胞的肽,效率低下且没有靶向性,因此不是理想的载体。具有可控构象的非细胞毒性四面体DNA纳米结构(TDN)已被开发为反义寡核苷酸的递送载体。在这项研究中,靶向特定基因(ftsZ)的反义肽核酸(asPNAs)通过TDNs有效地转运到耐甲氧西林的金黄色葡萄球菌细胞中,并且ftsZ的表达以依赖于AsPNA浓度的方式成功抑制了Aβ的表达。递送系统专门针对预期的基因。该新颖的递送系统为反义抗菌疗法的未来应用提供了更好的平台,并为开发用于多药耐药细菌感染的新型抗菌药物提供了基础。
更新日期:2018-08-08
中文翻译:
四面体DNA纳米结构使反义肽核酸传递抑制耐甲氧西林金黄色葡萄球菌。
使用反义寡核苷酸作为抗菌治疗剂的最大障碍之一是在没有合适载体的情况下细菌细胞对它们的摄取有限,特别是在具有药物外排机制的耐多药细菌中。现有的载体,例如穿透细胞的肽,效率低下且没有靶向性,因此不是理想的载体。具有可控构象的非细胞毒性四面体DNA纳米结构(TDN)已被开发为反义寡核苷酸的递送载体。在这项研究中,靶向特定基因(ftsZ)的反义肽核酸(asPNAs)通过TDNs有效地转运到耐甲氧西林的金黄色葡萄球菌细胞中,并且ftsZ的表达以依赖于AsPNA浓度的方式成功抑制了Aβ的表达。递送系统专门针对预期的基因。该新颖的递送系统为反义抗菌疗法的未来应用提供了更好的平台,并为开发用于多药耐药细菌感染的新型抗菌药物提供了基础。