Polymer multilayer tattooing for enhanced DNA vaccination.

Polymer multilayer tattooing for enhanced DNA vaccination.
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DOI:
10.1038/nmat3550
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发表时间:
2013-04
期刊:
影响因子:
41.2
通讯作者:
Irvine DJ
Irvine DJ
中科院分区:
材料科学1区
文献类型:
--
作者:
DeMuth PC;Min Y;Huang B;Kramer JA;Miller AD;Barouch DH;Hammond PT;Irvine DJ

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DNA疫苗有许多潜在的好处,但未能在人体内产生强大的免疫反应。最近,体内电穿孔等方法已经证明了性能的改善,但安全,可重复和无痛的DNA疫苗接种的最佳策略仍然难以捉摸。在这里,我们报告了一种方法,用于快速植入的疫苗加载的聚合物膜携带DNA,免疫刺激RNA,和可生物降解的聚阳离子到免疫细胞丰富的表皮,使用可释放的微针涂层。在短暂的微针应用后转移到皮肤中的膜促进了局部转染,并控制了DNA和佐剂在皮肤中的持久性,从数天到数周,动力学由膜组成决定。这些“多层纹身”DNA疫苗诱导了与小鼠电穿孔相当的针对模型HIV抗原的免疫应答,增强了记忆T细胞的产生,并在非人灵长类动物皮肤中引起了比皮内DNA注射高140倍的基因表达,表明这种策略用于增强DNA疫苗接种的潜力。
DNA vaccines have many potential benefits but have failed to generate robust immune responses in humans. Recently, methods such as in vivo electroporation have demonstrated improved performance, but an optimal strategy for safe, reproducible, and pain-free DNA vaccination remains elusive. Here we report an approach for rapid implantation of vaccine-loaded polymer films carrying DNA, immune-stimulatory RNA, and biodegradable polycations into the immune-cell-rich epidermis, using microneedles coated with releasable polyelectrolyte multilayers. Films transferred into the skin following brief microneedle application promoted local transfection and controlled the persistence of DNA and adjuvants in the skin from days to weeks, with kinetics determined by the film composition. These “multilayer tattoo” DNA vaccines induced immune responses against a model HIV antigen comparable to electroporation in mice, enhanced memory T-cell generation, and elicited 140-fold higher gene expression in non-human primate skin than intradermal DNA injection, indicating the potential of this strategy for enhancing DNA vaccination.
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