| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Although cancer immunotherapies have become one of the major treatment for malignant melanoma (MM), only 20-30% of patients can show objective clinical responses. Unresponsiveness to immunotherapies may be mediated by numerous immunosuppressive mechanisms that inhibit anti-tumor T-cell responses. Thus, combined therapies that can reverse immunosuppression in non-responders and identification of biomarkers for responders are urgently needed. In this study, we have identified three cell surface markers which could define particular subpopulation showing resistance to tumor antigen specific cytotoxic T cells. Moreover, by cDNA microarray analysis, we also identified the one responsible gene that directly caused this resistance. These results indicate that these cell surface markers and the gene may be potential biomarkers for the prediction of responders for immunotherapies and could be used as attractive therapeutic targets in MM.
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