1. Medical Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 1−5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606−0823, Japan
2. Innovation Center of Nanomedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
3. Department of Advanced Nanomedical Engineering, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan