Nanoscopic structure of DNA condensed for gene delivery
نویسندگان
چکیده
منابع مشابه
Nanoscopic structure of DNA condensed for gene delivery.
Scanning force microscopy was used to examine DNA condensates prepared with varying stoichiometries of lipospermine or polyethylenimine in physiological solution. For the first time, individual DNA strands were clearly visualized in incomplete condensates without drying. Using lipospermine at sub-saturating concentrations, discrete nuclei of condensation were observed often surrounded by folded...
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Polyethylenimine (PEI) was combined with plasmid DNA and freeze dried following the addition of sucrose as a lyoprotectant and pore-forming agent. Freeze-dried PEI DNA condensates were dry mixed with granular polylactideglycolic acid (PLGA) then compression molded and sponged to encapsulated PEI DNA. A measurement of the elastic modulus indicated that 91 wt% sucrose substituted for 95 wt% sodiu...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1997
ISSN: 1362-4962
DOI: 10.1093/nar/25.15.3095