Sergio Rodriguez-Cuenca1,2, Antonio Vidal-Puig3,4. 1. Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK. 2. Cambridge University Nanjing Centre of Technology and Innovation, Nanjing, China. 3. Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, UK. ajv22@medschl.cam.ac.uk. 4. Cambridge University Nanjing Centre of Technology and Innovation, Nanjing, China. ajv22@medschl.cam.ac.uk.