相关实验视频
Updated: Sep 20, 2025
06:40
Small-Scale Extraction of Caenorhabditis elegans Genomic DNA
Published on: June 7, 2022
5.5K
一种依赖Mg2+的高产方法,从单个平面样本中提取高分子量基因组DNA
Ao Li1, Bingrui Sun2, Ying Zhang2
1School of Life Sciences and Medicine, Shandong University of Technology, Zibo, 255049, PR China. aoli@sdut.edu.cn.
BMC genomics
|May 26, 2025
概括
一个新的协议有效地将Dugesia japonica的高分子量基因组DNA (HMW gDNA) 用Mg2+依赖的溶解缓冲器隔离出来. 这种方法产生了适合长读测序的高质量DNA,克服了以前的提取挑战.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 生物技术是生物技术.
背景情况:
- 高分子量基因组DNA (HMW gDNA) 隔离对于完整的基因组组装至关重要.
- 由于多糖和核酶,标准协议在从Dugesia japonica中提取HMW gDNA时面临挑战.
研究的目的:
- 开发一个强大的协议,从单个Dugesia japonica个体中提取高产量的HMW gDNA.
- 为了克服HMW gDNA从该物种中隔离的标准协议的局限性.
主要方法:
- 使用Mg2+依赖的溶解缓冲器来抑制DNase活动,取代金属阴离子化.
- 在当地D. japonica标本中,优化Mg2+度为20mM.
主要成果:
- 获得了高产量HMW gDNA (10-15微克/虫) 的优质产量.
- 提取的HMW gDNA与PacBio HiFi和牛津纳米孔测序平台的兼容性得到了证明.
- 该协议显示了特定物种和区域的有效性,但对某些D. japonica种群和Schmidtea mediterranea的限制.
结论:
- 开发的协议提供了一种简单,高产率的方法,用于从D. japonica.中分离HMW gDNA.
- 使用现有方法,为生物体具有持续的gDNA降解问题提供了替代解决方案.
相关概念视频
01:24DNA Isolation
40.8K
DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
40.8K
02:35DNA Agarose Gel Electrophoresis
100.0K
Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
100.0K