Shan Guan received his Dr. rer. nat. from the Ludwig Maximilian University of Munich in Germany under the supervision of PD Dr. Carsten Rudolph. After a postdoctoral fellowship at the Nanotechnology-Based Gene Transfer Research Group led by Prof. Dr. Joseph Rosenecker until 2020, when he joined the National Engineering Research Center of Immunological Products in China as a professor. His research interests are related to the nasal and pulmonary delivery of DNA, in vitro transcribed mRNA, and protein for therapeutic or vaccination purposes.