相关实验视频

Updated: Feb 19, 2026

Metal-Limited Growth of Neisseria gonorrhoeae for Characterization of Metal-Responsive Genes and Metal Acquisition from Host Ligands

Metal-Limited Growth of Neisseria gonorrhoeae for Characterization of Metal-Responsive Genes and Metal Acquisition from Host Ligands

Published on: March 4, 2020

细胞内Zn2+动态调节了Klebsiella pneumoniae中塞菲德罗科尔的耐药性

Liang Wang¹, Jie Zhu², Jingnan Lv²

¹Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, China; MOE Key Laboratory of Geriatric Diseases and Immunology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.

Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy

|February 17, 2026

概括

耐卡巴胺的Klebsiella pneumoniae (CRKP) 由于细胞内含量增加而表现出较高的 cefiderocol 耐药性,从而提高了新德里金属β-乳糖酶 (NDM) 的活性. 基因JNMCOFLA_01041对于这种吸收,耐药性和毒性至关重要.

科学领域:

微生物学微生物学
传染性疾病传染性疾病
药物耐药性药物耐药性药物耐药性

背景情况:

耐卡巴尼姆的Klebsiella肺炎 (CRKP) 构成了全球严重的健康威胁.
对于CRKP存在有限的治疗选择,特别是产生新德里金属β-乳糖酶 (NDM) 的菌株.
塞菲德罗科尔提供了一种潜在的治疗方法,但NDM生产菌株的高耐药率是一个越来越令人担忧的问题.

研究的目的:

调查NDM产生的K. pneumoniae.中高赛菲德罗科尔耐药性背后的机制.
在宿主施加的压力下识别导致细菌生存和耐药性的关键因素.
探索对抗CRKP感染的潜在治疗点.

主要方法:

动态分析K. pneumoniae对宿主营养免疫和 cefiderocol压力的反应.
研究细胞内 (Zn2+) 度变化.
对JNMCOFLA_01041基因的识别和功能特征.

主要成果:

宿主营养免疫和 cefiderocol 压力诱导K. pneumoniae的氧化压力,导致细胞内Zn2+的增加.
细胞内Zn2+的升高增强了NDM酶活性,增加了 cefiderocol的最小抑制度 (MIC).
鉴定出JNMCOFLA_01041基因对Zn2+和血红素吸收至关重要,影响氧化应激抵抗,NDM活性,新陈代谢和毒性.

结论:

细菌金属离子度的动态变化显著影响生存率和耐药性.
在治疗期间监测和调节细菌内部环境对于抗微生物药物的有效性至关重要.
JNMCOFLA_01041基因是新型抗菌药物和针对CRKP的疫苗的潜在目标.

关键词:

这就是Cefiderocol.金属限制/金属中毒情况没有NDM,没有NDM.Zn2+ Zn2+ Zn2+ Zn2+ Zn2+ Zn2

更多相关视频

Using Mycobacterium smegmatis as a Bioindicator for Zinc-Limited Growth Conditions in Mycobacteria

Using Mycobacterium smegmatis as a Bioindicator for Zinc-Limited Growth Conditions in Mycobacteria

Published on: September 20, 2024

Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes

Visualization of Bacterial Resistance using Fluorescent Antibiotic Probes

Published on: March 2, 2020

相关概念视频

Development of Antibiotic Resistance

Development of Antibiotic Resistance

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...

Stringent Response in E. coli

Stringent Response in E. coli

Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...

Gene Regulation in Microbial Communities: Quorum Sensing

Gene Regulation in Microbial Communities: Quorum Sensing

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,...