克里斯普尔-卡斯系统,抗菌素耐药性,和肠球菌属-A复杂的关系
Carmen Costache1,2, Ioana Colosi1, Dan-Alexandru Toc1,2
1Department of Microbiology, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania.
Biomedicines
|July 27, 2024
概括
肠球菌的抗生素耐药性是一个全球性的健康问题. 这项研究发现,efaM基因在CRISPR阴性肠球菌中更常见,为抵抗机制提供了洞察力.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 抗生素耐药细菌代表着一个重大的全球健康威胁.
- 创新策略对于对抗日益增长的抗菌素耐药性至关重要.
- 该研究的重点是Enterococcus物种及其与抗生素耐药性的关系.
研究的目的:
- 为了研究集群定期间隔的短Palindromic重复 (CRISPR) 与Enterococcus物种的抗生素耐药性之间的联系.
- 分析与CRISPR存在相关的特定抗生素耐药性基因的流行率.
- 了解Enterococcus中抗生素耐药性获得的分子机制.
主要方法:
- 使用CRISPRCasFinder对Enterococcus物种进行基因组分析,以识别CRISPR阳性和阴性分离物.
- 对抗生素耐药性基因的识别和比较分析.
- 统计评估CRISPR状态与抗生素耐药性基因配置文件之间的关联.
主要成果:
- 在Enterococcus物种中分析了10个抗生素耐药性基因.
- 在 efaM 基因和 CRISPR 阴性分离物之间观察到显著的关联.
- 在CRISPR阳性和阴性Enterococcus基因组之间没有发现其他抗生素耐药性基因的显著差异.
结论:
- 这种 efaM 基因可能在 CRISPR 阴性 Enterococcus 中更为普遍.
- 这些发现有助于理解抗生素耐药性基因获取的分子基础.
- 进一步的研究可以探索CRISPR在抗生素耐药性的演变中的作用.
关键词:
克里斯普尔是什么意思?克里斯普尔是什么意思?克里斯普尔CasFinder是一个寻找器.菌 (Enterococcus faecalis) 是一种菌.肠球菌 (Enterococcus faecium) 是一个有毒的菌株.这是Enterococcus属的.艾莎·伊莎·伊莎是什么意思抗生素耐药性 抗生素耐药性efmA 的意思是瓦纳 (vanA) 的意思是这就是VanMM的意义.更多相关视频
08:58Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
6.4K
08:19Generating Transposon Insertion Libraries in Gram-Negative Bacteria for High-Throughput Sequencing
Published on: July 7, 2020
10.3K
相关概念视频
02:53CRISPR and crRNAs
16.9K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
16.9K
01:59CRISPR
50.2K
Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
50.2K
00:57Antibiotic Selection
52.7K
Overview
52.7K
02:31Homologous Recombination
50.4K
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
50.4K
01:31Defense Against Bacterial Pathogens
1.4K
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...
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...
1.4K
00:46Genomic DNA in Prokaryotes
43.7K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
43.7K