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将小量制备的K12质粒DNA转化为有活力的EHA105细胞用于植物遗传转化的简单且可靠的方法。

Simple and Fail-safe Method to Transform Miniprep Strain K12 Plasmid DNA Into Viable EHA105 Cells for Plant Genetic Transformation.

作者信息

Siamalube Beenzu, Ehinmitan Emmanuel, Ngotho Maina, Onguso Justus, Runo Steven

机构信息

Department of Molecular Biology and Biotechnology, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya.

Department of Animal Science, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya.

出版信息

Bio Protoc. 2025 Jan 5;15(1):e5174. doi: 10.21769/BioProtoc.5174.

Abstract

Agrobacterium-mediated gene transformation method is a vital molecular biology technique employed to develop transgenic plants. Plants are genetically engineered to develop disease-free varieties, knock out unsettling traits for crop improvement, or incorporate an antigenic protein to make the plant a green factory for edible vaccines. The method's robustness was validated through successful transformations, demonstrating its effectiveness as a standard approach for researchers working in plant biotechnology. It enables the introduction of foreign DNA into plant genomes. Conventionally, plant genetic transformation has relied on time-consuming, costly, and technically demanding procedures, such as electroporation and chimeric viruses or biolistic methods, which usually yield variable transformation efficiencies. This study presents a simple and fail-safe protocol that involves a modified freeze-thaw and heat-shock concoction method. This approach involves a streamlined plasmid miniprep procedure to isolate high-quality plasmid DNA from K12 strain, followed by a target-specific transfer into EHA105 strain. The optimized method minimizes DNA degradation and maximizes uptake by cells, making it a reproducible and accessible protocol for various genetic engineering applications. The transformation efficiency is consistently high, enhancing plasmid uptake while maintaining cell viability, requiring minimal specialized equipment and reagents. The proposed protocol offers significant advantages, including simplicity, reliability, and cost-effectiveness, positioning it as a valuable alternative to traditional techniques in the field of plant biotechnology. Key features • Uses liquid nitrogen as a proxy for freezing. • Plasmid DNA from competent bacterial cells is extracted using a user-friendly high-copy isolation kit. • A maximum of five consecutive days is sufficient to complete the procedures.

摘要

农杆菌介导的基因转化方法是一种用于培育转基因植物的重要分子生物学技术。通过基因工程改造植物,可培育出无病品种,去除不利于作物改良的性状,或引入抗原蛋白,使植物成为生产可食用疫苗的绿色工厂。该方法的稳健性已通过成功转化得到验证,证明其作为植物生物技术研究人员的标准方法是有效的。它能够将外源DNA导入植物基因组。传统上,植物遗传转化依赖于耗时、昂贵且技术要求高的程序,如电穿孔、嵌合病毒或基因枪方法,这些方法通常产生可变的转化效率。本研究提出了一种简单且可靠的方案,该方案涉及改良的冻融和热休克混合方法。这种方法包括一个简化的质粒小量制备程序,从K12菌株中分离高质量的质粒DNA,然后将其靶向转移到EHA105菌株中。优化后的方法可最大限度地减少DNA降解,并使细胞摄取最大化,使其成为各种基因工程应用中可重复且易于操作的方案。转化效率始终很高,在保持细胞活力的同时提高了质粒摄取,所需的专业设备和试剂最少。所提出的方案具有显著优势,包括简单性、可靠性和成本效益,使其成为植物生物技术领域传统技术的有价值替代方案。关键特性 • 使用液氮作为冷冻替代物。 • 使用用户友好的高拷贝分离试剂盒从感受态细菌细胞中提取质粒DNA。 • 最多连续五天就足以完成这些程序。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/28ba/11717716/28af6e445125/BioProtoc-15-1-5174-g001.jpg

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