Oral Nonviral Gene Delivery for Chronic Protein Replacement Therapy.
Oral Nonviral Gene Delivery for Chronic Protein Replacement Therapy.
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DOI:
10.1002/advs.201701079
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发表时间:
2018-08
期刊:
影响因子:
--
通讯作者:
Leong KW
中科院分区:
文献类型:
--
作者:
Lin PY;Chiu YL;Huang JH;Chuang EY;Mi FL;Lin KJ;Juang JH;Sung HW;Leong KW
Efficient nonviral oral gene delivery offers an attractive modality for chronic protein replacement therapy. Herein, the oral delivery of insulin gene is reported by a nonviral vector comprising a copolymer with a high degree of substitution of branched polyethylenimine on chitosan (CS‐g‐bPEI). Protecting the plasmid from gastric acidic degradation and facilitating transport across the gut epithelium, the CS‐g‐bPEI/insulin plasmid DNA nanoparticles (NPs) can achieve systemic transgene expression for days. A single dose of orally administered NPs (600 µg plasmid insulin (pINS)) to diabetic mice can protect the animals from hyperglycemia for more than 10 d. Three repeated administrations spaced over a 10 d interval produce similar glucose‐lowering results with no hepatotoxicity detected. Positron‐emission‐tomography and computed‐tomography images also confirm the glucose utilization by muscle cells. While this work suggests the feasibility of basal therapy for diabetes mellitus, its significance lies in the demonstration of a nonviral oral gene delivery system that can impact chronic protein replacement therapy and DNA vaccination.
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