1. Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
2. The Japan Society for the Promotion of Science (JSPS), Chiyoda-ku, Tokyo 102-8471, Japan
3. Department of Biopharmaceutics, School of Pharmaceutical Sciences, Teikyo University, 1091-1 Suwarashi, Midori-ku, Sagamihara, Kanagawa 252-5195, Japan
4. Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-ushinomiya-cho, Sakyo-ku, Kyoto 606-8302, Japan