کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5550646 1557301 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved sustained release of antigen from immunostimulatory DNA hydrogel by electrostatic interaction with chitosan
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی علوم دارویی
پیش نمایش صفحه اول مقاله
Improved sustained release of antigen from immunostimulatory DNA hydrogel by electrostatic interaction with chitosan
چکیده انگلیسی

Immunostimulatory DNA hydrogel (sDNA hydrogel) containing unmethylated cytosine-phosphate-guanine (CpG) sequences has been demonstrated to be a useful antigen delivery system, which can effectively induce an antigen-specific immune response through stimulation of the innate immune system. However, relatively rapid release of antigens from the sDNA hydrogel limits its potential. To enhance the potency of the sDNA hydrogel via improvement of its sustained release property, we selected chitosan, a biocompatible cationic polymer which electrostatically interacts with DNA, and mixed it with the sDNA hydrogel. Compared to unmixed sDNA hydrogel, sDNA hydrogel mixed with chitosan (Chitosan-sDNA hydrogel) was more stable, tougher, had more bound water, released a model antigen ovalbumin (OVA) more slowly in vitro, and provided longer retention of OVA at the injection site after intradermal injection into mice. Intradermal immunization of mice with the OVA-loaded Chitosan-sDNA hydrogel resulted in the induction of a higher level of OVA-specific IgG in serum compared with OVA-loaded sDNA hydrogel with no chitosan. These results indicate that the Chitosan-sDNA hydrogel is an improved sustained release formulation for efficient induction of antigen-specific immune responses.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pharmaceutics - Volume 516, Issues 1–2, 10 January 2017, Pages 392-400
نویسندگان
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