Interferon-Related Secretome Plays a Vital Role in PD-L1 Expression in the Tumor Microenvironment after Direct Interaction between Immune Cells and Tumor Cells

Yuan-Qin Yang¹, Jonathan Howard DeLong² and Kang-Jian Zhang^1*

¹State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, PR China

²Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA