Dr. Sun is an Associate Professor with tenure in the Department of Molecular Medicine, College of Medicine at the University of South Florida (USF). He holds courtesy appointments in the Department of Internal Medicine, Department of Cell Biology, Microbiology & Molecular Biology, Department of Chemistry at USF, and USF Genomics. He received his PhD in Natural Sciences from the University of Kiel, Germany, and his Master Degree in Veterinary Microbiology and Immunology from the Nanjing Agricultural University, China. He received his postdoctoral training in Molecular Microbiology and Biochemistry at Brown University, USA. The research in his laboratory is focused on the pathogenesis of Clostridioides difficile and the development of novel therapeutics including vaccines to prevent / treat C. difficile infection (CDI). He was an NIH (National Institutes of Health) Career Development K01 Awardee. His laboratory has been continuously supported by the NIH. He has been actively serving NIH study section panels including chairing the NIH study section panel in 2020. He serves as an Associate Editor for “Molecular Medicine”, Associate topic editor for “Frontiers in Microbiology”, and editorial boards for “Infection and Immunity” and “Applied and Environmental Microbiology”. He received Tufts Institute for Innovation Inaugural Award in 2014. In 2018, he was awarded "Faculty Outstanding Research Achievement Award" at USF. In 2019, he was awarded "Excellence in Innovation Award" at USF. He chaired the Research Committee of College of Medicine at USF from 2019 to 2020. Currently, he serves as the Vice President for the USF Chapter, National Academy of Inventors, USA.