ArticleBioengineering (Basel, Switzerland)2026
Scalable Production of Transfection-Grade Plasmid DNA by Liquid-Liquid Extraction Without Chromatography: Application to CAR-T Vector Packaging.
Article in Bioengineering (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
10 authors.
Funding
Abstract
The growing demand for high-quality plasmid DNA (pDNA) in cell and gene therapy, including chimeric antigen receptor T-cell therapy (CAR-T) manufacturing, is constrained by the limited availability of transfection-grade plasmids. This study describes a practical, scalable, and cost-effective acidic phenol extraction method based on a modified alkaline lysis protocol. This approach efficiently removes endotoxins and residual genomic DNA without requiring chromatography or ultracentrifugation. When benchmarked against CsCl density gradient ultracentrifugation and a commercial midiprep kit, the acidic phenol method delivered comparable plasmid purity and functional performance while providing superior scalability, yielding 5-10 mg of pDNA per 500 mL culture. Notably, residual endotoxin levels were negligible for downstream applications such as transfection and lentiviral vector packaging. Lentiviral vectors produced with these plasmids reached titers exceeding 5 × 10
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