相关实验视频
Updated: Jan 31, 2026

10:34
Ultra-long Read Sequencing for Whole Genomic DNA Analysis
Published on: March 15, 2019
24.0K
细菌等离子体分析的长读测序:简要概述
Vincent van Almsick1,2, Annika Sobkowiak1,2, Vera Schwierzeck2
1Department of Cardiology I - Coronary and Peripheral Vascular Disease, Heart Failure, University Hospital Münster, Münster, Germany.
FEMS microbiology letters
|January 30, 2026
概括
长读序列测序 (LRS) 通过使细菌基因组学彻底改变,使得可以进行完整的基因组组装和对等离子体上的抗菌素耐药性基因 (ARG) 的详细分析. 这项技术对于了解AMR演变和控制感染至关重要.
科学领域:
- 微生物基因组学 微生物基因组学
- 基因组流行病学基因组流行病学
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 自1995年以来,全基因组测序 (WGS) 已经推进了微生物基因组学.
- 第三代长读测序 (LRS) 平台克服了短读测序的局限性.
- 对于高分辨率的细菌病原体调查,LRS提供了长时间的连续读取.
研究的目的:
- 审查LRS技术及其在微生物基因组学方面的能力.
- 概述使用LRS.分析细菌质粒的方法和工具.
- 突出LRS在理解抗菌素耐药性基因 (ARG) 传播中的作用.
主要方法:
- 使用长读测序 (LRS) 平台 (例如,PacBio,牛津纳米孔).
- 执行精确的 de novo 基因组组装和解决复杂的基因组区域.
- 具有ARG的塑体和移动遗传元素的特征.
主要成果:
- 通过LRS,可以精确地描述ARG,包括它们的基因组架构,定位和副本编号.
- 揭示了ARG的完整基因组背景,这对于解释抗菌素耐药性 (AMR) 是必不可少的.
- 通过克隆扩张和水平基因转移,LRS有助于理解AMR的演变和传播.
结论:
- LRS为研究AMR的演变和传播提供了可靠的基础.
- 生物信息学工具增强了用于等离子体重建,类型和注释的LRS分析.
- 通过LRS,可以在各种环境中对等离子体进行监测和追踪ARG传播.
相关概念视频
Bacterial Transformation
59.9K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
59.9K
Uncertainty in Measurement: Reading Instruments
51.7K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
51.7K
Electrogravimetric Analysis: Overview
810
Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
To test the completeness of the...
810
Statistical Analysis: Overview
16.6K
When we take repeated measurements on the same or replicated samples, we will observe inconsistencies in the magnitude. These inconsistencies are called errors. To categorize and characterize these results and their errors, the researcher can use statistical analysis to determine the quality of the measurements and/or suitability of the methods.
One of the most commonly used statistical quantifiers is the mean, which is the ratio between the sum of the numerical values of all results and the...
One of the most commonly used statistical quantifiers is the mean, which is the ratio between the sum of the numerical values of all results and the...
16.6K
Plasmids
1.5K
Plasmids are extrachromosomal DNA molecules found in bacteria, archaea, and some eukaryotic microbes like yeast. These small, circular DNA structures typically contain fewer than 30 genes, although some may exist linearly. Plasmids vary in their number within a cell, known as copy number. Single-copy plasmids are present in one copy per cell and multi-copy plasmids are present in multiple copies, reaching over 100 copies per cell.Plasmids usually replicate independently of the chromosomal DNA...
1.5K
Sample Preparation for Analysis: Overview
3.7K
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
3.7K

