Our two papers are published on Science Immunology and Nature Communications, reporting the identification of monoamine oxidase A (MAO-A) as an immune checkpoint restraining T cell antitumor immunity and modulating tumor-associated macrophage polarization, as well as the potential of repurposing MAO inhibitor (MAOI) antidepressants for cancer immunotherapy.  Congratulations to all the authors, in particular to the first-authors Shirley Xi Wang and Ryan Yu-Chen Wang! [Science Immunology Paper][Nature Communications Paper][UCLA News]