A solid-in-oil nanodispersion for transcutaneous protein delivery

Yoshiro Tahara, Shota Honda, Noriho Kamiya, Hongyu Piao, Akihiko Hirata, Eiji Hayakawa, Takeru Fujii, Masahiro Goto

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)


Transcutaneous delivery attracts much attention but remains a challenging strategy for hydrophilic macromolecular drug administration. In the present study, we demonstrated that a solid-in-oil (S/O) nanodispersion, an oil-based nanodispersion of hydrophilic drugs, effectively enhanced the permeation of proteins into the skin. All of the different model proteins, FITC-labeled insulin (MW ca. 6 kDa), enhanced green fluorescent protein (EGFP, MW ca. 27 kDa) and horseradish peroxidase (HRP, MW ca. 40 kDa), permeated through the stratum corneum of Yucatan micropig skin in vitro by forming a S/O nanodispersion. The penetrated EGFP and HRP exhibited green fluorescence and catalytic activity, respectively, suggesting that these proteins can permeate into the skin in a functional form. The results indicated the potential utility of the S/O nanodispersion as a novel vehicle for transcutaneous protein delivery.

Original languageEnglish
Pages (from-to)14-18
Number of pages5
JournalJournal of Controlled Release
Issue number1
Publication statusPublished - Oct 6 2008

All Science Journal Classification (ASJC) codes

  • Pharmaceutical Science


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