1. Laboratory of Gene Transfer and Regulation, National Institute of Biomedical Innovation, Osaka 567-0085, Japan.
2. Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 567-0871, Japan.
3. Present address: Showa Pharmaceutical University, Machida, Tokyo, 194-8543, Japan.
4. Japan Health Sciences Foundation, Tokyo 103-0001, Japan.
5. National Institute of Biomedical Innovation, Osaka 567-0085, Japan.