Our research focuses on radiation responses in cellular and molecular levels in the field of therapeutic radiology. In particular, our aim is to find out treatment strategies to control distance metastasis as well as improving local control by enhancing antitumor immune response by radiation with immune modulations. We are also interested in comparing radiation response to tumor and tumor microenvironments between photon, and heavy ion beams. Additionally, we have close collaboration with radiation oncology department and are conducting a variety of research, such as radiation cell killing effects and tumor invasiveness using various types of radiation, prediction of radiation response using human blood samples, etc.