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  • Title: CL22 - a novel cationic peptide for efficient transfection of mammalian cells.
    Author: Haines AM, Irvine AS, Mountain A, Charlesworth J, Farrow NA, Husain RD, Hyde H, Ketteringham H, McDermott RH, Mulcahy AF, Mustoe TL, Reid SC, Rouquette M, Shaw JC, Thatcher DR, Welsh JH, Williams DE, Zauner W, Phillips RO.
    Journal: Gene Ther; 2001 Jan; 8(2):99-110. PubMed ID: 11313779.
    Abstract:
    Condensing peptide-DNA complexes have great potential as nonviral agents for gene delivery. To date, however, such complexes have given transfection activities greatly inferior to adenovirus and somewhat inferior to cationic lipid-DNA complexes, even for cell lines and primary cells in vitro. We report here the identification of a novel condensing peptide, CL22, which forms DNA complexes that efficiently transfect many cell lines, as well as primary dendritic and endothelial cells. We report studies with sequence and structure variants that define some properties of the peptide that contribute to efficient transfection. We demonstrate that the superior transfection activity of CL22 compared with other DNA condensing peptides is conferred at a step after uptake of the complexes into cells. We show that CL22-DNA complexes have transfection activity that is at least equivalent to the best available nonviral agents.
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