Animals Gli2fl/fl and Gli3fl/fl mouse strains were purchased from Gem Pharmatech Co., Ltd (China). Gli1-CreER and B6.Cg-Gt(ROSA)26Sortm14(CAG-tdTomato)Hze/J were kindly given by Dr. Hu Zhao, Chinese Institute for Brain Research, Beijing. K14-CreER were purchased from Cygen Biomodels, LLC (China). Tamoxifen (T5648, Sigma, USA) was dissolved in corn oil (20 mg/mL, A561403, Ambeed, USA) and administered via intraperitoneal [...]