1 Laboratory for Bone Metabolism, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Shenzhen Research Institution of Northwestern Polytechnical University, Shenzhen 518057, PR China; Northwestern Polytechnical University-Hong Kong, Baptist University, Joint Research Centre for Translational Medicine on Musculoskeletal Health in Space, Xi'an, Shaanxi 710072, PR China. Electronic address: qianair@nwpu.edu.cn.
2 Laboratory for Bone Metabolism, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China; Shenzhen Research Institution of Northwestern Polytechnical University, Shenzhen 518057, PR China; Northwestern Polytechnical University-Hong Kong, Baptist University, Joint Research Centre for Translational Medicine on Musculoskeletal Health in Space, Xi'an, Shaanxi 710072, PR China. Electronic address: hulifang@nwpu.edu.cn.