生物特征和Acinetobacter nosocomialisLytic Phage XC1的基因组分析
Chuhan Wang1, Shuchuan Zhao1, Hailin Jiang1
1Department of Pathogen Biology, College of Basic Medical Science, Jilin University, Changchun 130021, China.
Current issues in molecular biology
|July 23, 2025
概括
一种针对Acinetobacter nosocomialis的新型菌体XC1被分离出来. 这种毒性菌体表现出快速的溶解活性和环境稳定性,显示出治疗抗生素耐药性感染的潜力.
科学领域:
- 微生物学 微生物学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- Acinetobacter nosocomialis的抗生素耐药性构成了全球健康的重大威胁.
- 菌体治疗为传统抗生素提供了一个有希望的替代方案.
研究的目的:
- 为了隔离和鉴定对抗Acinetobacter nosocomialis的Lytic菌XC1的特征.
- 为了分析其生物特性和基因组结构的治疗潜力.
主要方法:
- 从湖水中分离和净化菌体XC1.
- 对菌体形态,最佳感染多重性 (MOI),热稳定性和pH耐受性的分析.
- 基因组测序,功能注释和平均核酸标识 (ANI) 分析.
主要成果:
- 菌体XC1表现出短暂的潜伏期 (20分钟) 和高爆发大小 (310 PFU/细胞).
- 它在50-60°C和pH7时表现出稳定性,其45,324bp的基因组含有84个ORF.
- 基因组分析证实没有溶解性,毒性或抗生素耐药性基因,这表明安全性. ANI分析表明XC1可能是一种新菌体.
结论:
- 菌体XC1是一种Obolenskvirus属的毒性细菌体,具有快速的溶解活性和显著的环境耐受性.
- 它的安全性和强烈的解能力突出显示了它对抗多药耐药性Acinetobacter nosocomialis感染的治疗潜力.
相关概念视频
DNA Bacteriophages
154
Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
154
Lytic Cycle of Bacteriophages
72.1K
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...
72.1K
Viral Replication: Lytic Cycle
272
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...
272
Viral Replication: Lysogenic Cycle
251
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
251
Lysogenic Cycle of Bacteriophages
63.3K
In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
63.3K
Bacterial Phylum Tenericutes
94
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
94


