使用纳米诱导剂精确降解细菌蛋白质以减轻抗生素耐药性
Linqi Han1,2, Wenping Huang1, Xueting Pan1
1CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, China.
Nature communications
|December 18, 2025
概括
研究人员开发了细菌纳米诱导剂 (bacNIDs),其向和降解必要的细菌蛋白质,提供了一种对抗抗生素耐药性的新方法. 与传统抗生素不同,bacNIDs在测试的细菌菌株中没有诱导耐药性.
科学领域:
- 纳米技术纳米技术
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
背景情况:
- 抗生素耐药性是一个关键的全球健康威胁.
- 由于迅速出现的耐药性,现有的治疗方法面临挑战.
- 有针对性的蛋白质降解提供了一个潜在的替代治疗策略.
研究的目的:
- 开发和评估一种用于向蛋白质降解的细菌纳米诱导剂 (bacNID).
- 评估bacNIDs对格拉姆阳性和格拉姆阴性细菌的疗效.
- 调查与传统抗生素相比,对bacNIDs抗药性发展的潜力.
主要方法:
- 工程黄金纳米粒子 (GNPs) 接种了向性 (MurD和SspB).
- 通过ClpXP蛋白酶系统证明了MurD蛋白的向降解.
- 评估了体外对黄金葡萄球菌和沙门氏菌的抗微生物活性,以及在感染的伤口中的体内活性.
主要成果:
- 在Gram阳性和Gram阴性细菌中,BacNIDs有效诱导了向的MurD降解.
- 在与bacNIDs经过25次通行后,S. aureus或S. typhimurium没有产生耐药性.
- 诺夫洛克萨迅速诱导了两种细菌菌株在较少的通道上显著的耐药性.
- 在感染皮肤和角膜伤口模型中,BacNIDs在体内显示出抗菌潜力.
结论:
- 细菌NIDs代表了一种基于纳米技术的新策略,用于对抗细菌感染.
- 这种方法通过避免耐药性发展,为传统抗生素提供了一个有希望的替代方案.
- 对bacNIDs在体内抗微生物应用中的进一步研究是有必要的.
相关概念视频
Gene Regulation in Microbial Communities: Quorum Sensing
463
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
463
Biological Methods for Microbial Control
758
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
758
Antibiotic Selection
59.3K
Overview
59.3K
Development of Antibiotic Resistance
1.1K
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
1.1K
Types of RNA
72.4K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
72.4K
Antimicrobial Proteins
12.9K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
12.9K


