* Corresponding authors

^a Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China
E-mail: gaojianqing@zju.edu.cn

^b Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, People's Republic of China

^c Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, People's Republic of China

^d Tianjin Neurological Institute, Key Laboratory of Post-Neuroinjury Neuro-repair and regeneration in Central Nervous System, Ministry of Education and Tianjin City, Tianjin, People's Republic of China