隔离,功能特征和抗生素膜的特性,一个性的Enterococcus菌体RG1对抗多种药物耐药的E. faecium
Rakesh Kumar Singh1, Riya Anand1, Ajeet Singh1
1Zoology Section, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi, 221005, India.
Scientific reports
|October 30, 2025
概括
一种新型的菌体,RG1,从甘河中分离出来,用于对抗多药耐药的Enterococcus faecium感染. 这种菌体表现出广泛的抗菌和抗菌膜活性,提供了一个有前途的替代治疗策略.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 菌 (Enterococcus faecium) 是一种多药耐药的病原体,会导致严重的医院感染.
- 抗生素耐药性的增加需要开发替代疗法.
- 菌体治疗正在成为抗生素的可行替代品.
研究的目的:
- 为了隔离和描述一种新型的菌对抗多药性耐药性Enterococcus faecium.有效.
- 评估与E. faecium. 的临床分离物相比,分离的菌体的治疗潜力.
- 为了研究菌体的稳定性和潜在的精确菌体治疗的宿主范围.
主要方法:
- 隔离和表征来自甘河的性细菌菌体 (RG1) 对E. faecium.的隔离和表征.
- 细菌RG1.1.的整个基因组测序
- 在各种pH值,温度和粉度中评估菌体稳定性.
- 对E. faecium分离物的抗菌和抗菌膜活性的评估.
- 研究糖和糖醇对菌体疗效的协同作用.
主要成果:
- 确定了RG1,一种属于Efemquintavirus属的新型菌体.
- 菌体拥有一个编码65个开放的读取的dsDNA基因组,没有确定的毒性,抗生素耐药性或溶解基因.
- RG1表现出高稳定性和广泛的抗菌和抗菌膜活性对E. faecium.
- 特定的糖 (利糖,麦芽糖,三糖) 抑制了细菌的生长,而糖醇则增强了菌体介导的溶解.
结论:
- 菌体RG1对抗多药耐药的菌体 (Enterococcus faecium) 具有显著的治疗潜力.
- 菌体的稳定性,广泛的宿主范围和与某些化合物的协同相互作用支持其在精密菌体治疗中的应用.
- RG1代表了一种有前途的替代治疗剂,用于对抗医院内E. faecium感染.
相关概念视频
01:30Development of Antibiotic Resistance
1.3K
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...
1.3K
01:30Lytic Cycle of Bacteriophages
77.4K
Bacteriophages, also known as phages, are specialized viruses that infect bacteria. A key characteristic of phages is their distinctive “head-tail” morphology. A phage begins the infection process (i.e., lytic cycle) by attaching to the outside of a bacterial cell. Attachment is accomplished via proteins in the phage tail that bind to specific receptor proteins on the outer surface of the bacterium. The tail injects the phage’s DNA genome into the bacterial cytoplasm. In the...
77.4K
01:20Viral Replication: Lytic Cycle
1.2K
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
1.2K
01:28Gene Regulation in Microbial Communities: Quorum Sensing
506
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,...
506
01:28Antimicrobial Effectiveness
897
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
897