在等离子体和菌体中抗生素耐药性基因的动力学
Sankaranarayanan Gomathinayagam1, Gothandam Kodiveri Muthukaliannan1
1School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamilnadu, India.
Critical reviews in microbiology
|April 23, 2024
概括
塑体通常携带抗生素耐药性基因 (ARG),而菌体通常没有. 然而,一些具有等离子体样特征的prophages可以传播ARG,突出显示复杂的基因转移动态.
科学领域:
- 微生物学 微生物学
- 遗传学 是一个遗传学.
- 进化生物学 进化生物学
背景情况:
- 像塑体和细菌菌体这样的异染色体元素是细菌适应和进化的关键驱动因素.
- 由这些元素促进的水平基因转移,在传播遗传物质方面发挥着至关重要的作用,包括抗生素耐药性基因 (ARG).
研究的目的:
- 在ARG传播的背景下,审查当前对菌体和质粒之间的相互作用的理解.
- 批判性地评估有关携带ARG的菌体及其在细菌进化中的作用的证据.
主要方法:
- 文献综述分析了等离子体和细菌菌体的基因库.
- 对研究通过菌体和菌体进行ARG携带的研究进行批判性评估.
- 塑体和体特征的比较以及它们在基因转移中的作用.
主要成果:
- 质粒通常编码基本基因和辅助基因,包括ARG.
- 菌体主要携带辅助代谢基因 (AMG),增强宿主代谢.
- 有证据表明,菌体通常不会编码ARG,与等离子体相反.
- 呈现类似等离子体的特征的超染色体维护的prophages可以编码和传播ARGs.
结论:
- 质粒是编码和传播ARG的主要遗传元素.
- 菌体通常不携带ARG,但对于具有等离子体特征的菌体而言,存在例外.
- 通过等离子体和菌体介导的ARG传播之间的区别对于理解抗生素耐药性至关重要.
- 需要进一步的研究,以充分阐明这些移动遗传元素的ARG转移机制.
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