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As a consequence of Covid-19 pandemic, the basic lab consumables are in shortage, especially in the low-income countries. Thus, the main objective of the present study is to develop and evaluate homemade solution to isolate plasmid. To pursue this objective, RNase A was overexpressed in Bl21 DE3 cells (E. coli strain) and prepared as crude refolding reaction with proper activity. Also, lysis buffers, neutralization buffer, and washing buffers were prepared. The homemade miniprep kit showed successful isolation of the px48SpCas9 plasmid. The prepared plasmid purity was enough to be used successfully in PCR amplification. In addition, to get extra benefits from this study, seven primers were designed to match the plasmid backbone to produce DNA ladder (100-1500 bp). In conclusion, we were able to have attainable working solutions for plasmid miniprep and DNA ladder.
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http://dx.doi.org/10.1186/s13568-022-01483-x | DOI Listing |
Curr Microbiol
August 2025
Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
Plasmids are key vectors in the dissemination of antimicrobial resistance (AMR), often transcending species and genus boundaries through horizontal gene transfer. Staphylococcus nepalensis, typically regarded as a commensal species, has emerged as a potential reservoir of resistance genes. In this study, we optimized plasmid extraction protocols to enhance the recovery of low-copy plasmids and applied whole-genome sequencing to characterize plasmids from a S.
View Article and Find Full Text PDFMethods Mol Biol
May 2025
Department of Biology, University of Chile, Santiago, Chile.
The verification of Agrobacterium clones is a crucial step in molecular biology research, traditionally relying on bacterial culture endpoint PCR. However, this method is susceptible to contamination and false-negative/positive results. The existing methods focus on confirming DNA sequences and frequently overlook plasmid acceptance.
View Article and Find Full Text PDFBio Protoc
January 2025
Department of Biochemistry, Microbiology and Biotechnology, Kenyatta University, Nairobi, Kenya.
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.
View Article and Find Full Text PDFSci Rep
November 2024
Division of Medical Bioinformatics, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
The advent of Oxford Nanopore Technologies has undergone significant improvements in terms of sequencing costs, accuracy, and sequencing read lengths, making it a cost-effective, and readily accessible approach for analyzing microbial genomes. A major challenge for bacterial whole genome sequencing by Nanopore technology is the requirement for a higher quality and quantity of high molecular weight DNA compared to short-read sequencing platforms. In this study, using eight pathogenic bacteria, we evaluated the quality, quantity, and fragmented size distribution of extracted DNA obtained from three different commercial DNA extraction kits, and one automated robotic platform.
View Article and Find Full Text PDFJ Vis Exp
June 2024
Clinical Research Institute, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China; Department of Clinical Laboratory, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China; Department of Neurology, The Affiliated Nanhua Hospital, Hengyang Me
Transgenesis in Drosophila is an essential approach to studying gene function at the organism level. Embryo microinjection is a crucial step for the construction of transgenic flies. Microinjection requires some types of equipment, including a microinjector, a micromanipulator, an inverted microscope, and a stereo microscope.
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