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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...
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A Practical and Novel Method to Extract Genomic DNA from Blood Collection Kits for Plasma Protein Preservation
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从人类全血中提取DNA的优化协议.

Sylwia Brodzka1, Piotr Kamiński2,3, Jędrzej Baszyński4

  • 1Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Department of Microbiology, M. Skłodowska-Curie St. 9, PL 85-094 Bydgoszcz, Poland.

Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology
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PubMed
概括

优化DNA隔离协议显著提高了基因研究的DNA产量和纯度. 经过修改的程序,包括增加溶解溶液和调整离心,可以产生适合各种PCR应用的高质量DNA.

关键词:
DNA隔离; DNA优化; 优化DNA协议; 人体全血; DNA净化套件; PCR.

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科学领域:

  • 分子生物学分子生物学
  • 遗传学 是一个遗传学.
  • 生物化学 生物化学

背景情况:

  • 基因分离是基因研究中的关键第一步,对于PCR等下游应用至关重要.
  • 使用标准净化套件的初步尝试导致DNA度 (6.414 ng*μL−1) 和纯度 (A260/280 = 0.764) 不足.

研究的目的:

  • 优化DNA隔离协议,以提高DNA度和纯度.
  • 为基因分析开发一种强大且可重复的DNA提取方法.

主要方法:

  • 增加组织/细胞溶解溶液体积和延长,离心和化时间.
  • 调整了离心速度和温度,并利用冷异醇和乙醇进行DNA沉和洗.
  • 测试了两种乙醇干燥方法,并优化了TE Buffer中的再悬浮.

主要成果:

  • 优化的协议实现了50-150 ng*μL-1的DNA度和1.735.5的纯度 (A260/280).
  • 从全血样本中获得了一致的高质量DNA,即使经过18个月的冷 (度~118-126 ng*μL−1,纯度~1.72-1.76).
  • 电泳证实了优化程序的有效性,超过了标准套件的建议.

结论:

  • 优化的DNA隔离协议是快速的,可复制的,特异的和敏感的,满足了良好的提取技术的标准.
  • 该方法无论样品冷时间如何,都有效,并包含了提高生产率的修改.
  • 这种精细的协议提供了一种创新和高效的方法,可以在没有危险步骤的情况下提取DNA.