1. State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
2. Department of Urinary Surgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
3. Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, Cancer Institute and Cancer Hospital, Chinese Academy of Medical Sciences, Beijing�100021, P.R. China