相关实验视频

Updated: Mar 13, 2026

Identification of Virulence Markers of Mycobacterium abscessus for Intracellular Replication in Phagocytes

Identification of Virulence Markers of Mycobacterium abscessus for Intracellular Replication in Phagocytes

Published on: September 27, 2018

光滑到粗的形态型切换,是Mycobacterium腹中菌体耐药性的机制

Jun Hao Liew^1,2, Ayuni Norman^1,2, Morgane Illouz³

¹A*STAR Infectious Diseases Labs, Agency for Science, Technology and Research, 8A Biomedical Grove, Immunos #05-13, Singapore 138648, Singapore.

Proceedings of the National Academy of Sciences of the United States of America

|March 11, 2026

概括

我的细菌感染很难治疗. 菌体治疗可以通过切换形态型来引起耐药性,但组合菌体治疗可以克服这一点.

科学领域:

微生物学微生物学
细菌学细菌学是一门学科.
抗微生物耐药性抗微生物耐药性

背景情况:

由于治疗困难和内在抗菌素耐药性,Mycobacterium疹感染构成了全球重大健康挑战.
菌体治疗是一种潜在的替代方案,但研究往往忽略了亚洲普遍存在的光滑变体,而是专注于粗的变体.

研究的目的:

为了开发对Mycobacterium abscessus的光滑和粗形态类型有效的菌体尾酒.
研究形态型切换作为M. abscessus中菌素抵抗的机制.

主要方法:

开发菌体尾酒,针对光滑和粗的M.变体.
在体外和体内实验,以评估菌体治疗的有效性和耐药性机制.
基因组分析以确定与菌素耐药性相关的突变.

主要成果:

菌体对平滑的M. abscessus变体进行菌体处理,这些变体被选定用于转换为粗的形态型,从而赋予菌体耐药性.
这种平滑到粗的形态型切换与糖脂 (GPL) 生物合成位点的突变有关.
一种双层菌体组合表明,与单菌体治疗相比,其疗效更高.

结论:

形态型切换是M. abscessus中菌体耐药性的临床显著机制.
了解和解决这种耐药机制对于有效的菌体治疗至关重要.
组合菌体策略,可能针对两种形态型,可以改善临床结果并避免耐药性发展.

关键词:

这种细菌是Mycobacterium abscessus.形态类型形态类型形态类型形态类型菌根菌体细胞菌体菌体的耐药性菌体的耐药性菌体疗法是一种菌体疗法.

更多相关视频

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos

Published on: September 9, 2015

Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi

Phage-Mediated Genetic Manipulation of the Lyme Disease Spirochete Borrelia burgdorferi

Published on: September 28, 2022

相关概念视频

Defense Against Bacterial Pathogens

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...

DNA Bacteriophages

DNA Bacteriophages

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...

Viral Replication: Lysogenic Cycle

Viral Replication: Lysogenic Cycle

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...

Lysogenic Cycle of Bacteriophages

Lysogenic Cycle of Bacteriophages

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...

Transduction

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...

Lytic Cycle of Bacteriophages

Lytic Cycle of Bacteriophages

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...