通过高效的phi29 DNA聚合酶改进了单细胞基因组放大.
Jia Zhang1,2,3,4, Xiaolu Su1,2,3,4, Yefei Wang2,3,4,5
1Single-Cell Center, CAS Key Laboratory of Biofuels, Shandong Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China.
Frontiers in bioengineering and biotechnology
|July 17, 2023
概括
改进的单细胞基因组放大 (iSGA) 增强了单细胞测序的全基因组放大. 这种新方法提高了效率和覆盖范围,使大规模单细胞测序更容易获得和更具成本效益.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 单细胞基因组全基因组放大 (WGA) 对于单细胞测序至关重要.
- 目前的WGA方法效率低,基因组放大不完整和不均,限制了吞吐量.
- 这些局限性阻碍了单细胞测序工作流程的效率.
研究的目的:
- 引入一个改进的单细胞基因组放大 (iSGA) 过程.
- 提高单细胞测序的全基因组放大效率和覆盖范围.
- 为大规模单细胞测序开发一种具有成本效益和可靠的方法.
主要方法:
- 通过二硫化键形成 (F137C-A377C) 工程phi29 DNA聚合酶以提高放大能力.
- 进一步进行蛋白质和工艺工程,开发出一种卓越的酶,HotJa Phi29 DNA聚合酶.
- 将iSGA应用于商业益生菌样本以评估性能.
主要成果:
- 在40°C下,HotJa Phi29 DNA聚合酶实现了99.75%的基因组覆盖率.
- iSGA表现出高单细胞基因组放大能力和93.59%的益生菌样本覆盖率.
- iSGA显示了2.03倍的效率,比商业替代品便宜10.89倍.
结论:
- iSGA为单细胞全基因组放大提供了更有效,更强大的解决方案.
- 设计的HotJa Phi29 DNA聚合酶显著提高了放大覆盖范围和效率.
- 由于其成本效益和性能,iSGA对大规模单细胞测序的广泛应用具有前景.
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