1. Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA.
2. Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, San Francisco, CA 94143, USA.
3. Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA.
4. Medical Diagnostic Research Center, Jilin Province People’s Hospital, Changchun, Jilin 130021, China.
5. Department of Immunology, Jilin University, Changchun, Jilin 130021, China.
6. Department of Physiological Chemistry, Genentech Inc., South San Francisco, CA 94080, USA.
7. Obesity and Comorbidities Research Center, University of Campinas (UNICAMP), Campinas, Sao Paulo 13084-970, Brazil.