mTORC1 is crucial for chondrocyte proliferation and bone growth, but the downstream signalling is not clear. Here, the authors use rapamycin and chondrocyte-specific Tsc1 knockout mice to show that S6K1 can cause nuclear accumulation of Gli2, thus driving PTHrP expression and preventing terminal differentiation of prehypertrophic chondrocytes.
- Bo Yan
- Zhongmin Zhang
- Xiaochun Bai
