Neutralized nanoparticle composed of SS-cleavable and pH-activated lipid-like material as a long-lasting and liver-specific gene delivery system.

Ukawa, Masami; Akita, Hidetaka; Hayashi, Yasuhiro; Ishiba, Ryohei; Tange, Kota; Arai, Masaya; Kubo, Kazuhiro; Higuchi, Yuriko et al. · Adv Healthc Mater · 2014

basic_science · Level V

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Abstract

Charge-neutralized lipid envelope-type nanoparticles formed with SS-cleavable and pH-activated lipid-like materials (ssPalm) accumulate rapidly in the liver without forming aggregates in the blood circulation, and result in a liver-specific gene expression for a long duration (>2 weeks) with neither immunological responses nor hepatotoxicity after intraveneous administration, when it carries pDNA free from CpG-motifs.

Medical subject headings