1. Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, P. R. China
2. Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, P. R. China
3. BrightGene Bio-Medical Technology Company, Ltd., Suzhou 215123, P. R. China