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Eradication of Established Murine Skin Tumors by Cyclic Chemoimmunotherapy with Cyclophosphamide and Effector T Cells | ||
Middle East Journal of Cancer | ||
مقاله 3، دوره 2، شماره 1، فروردین 2011، صفحه 9-18 اصل مقاله (598.8 K) | ||
نوع مقاله: Original Article(s) | ||
نویسندگان | ||
Koki Matsuyama* 1؛ Takeshi Ota1؛ Junko Baba1؛ Takao Miyabayashi1؛ Satoshi Watanabe1؛ Hiroshi Kagamu1؛ Ichiei Narita1؛ Koh Nakata2؛ Hirohisa Yoshizawa2 | ||
1Division of Respiratory Medicine, Department of Homeostatic Regulation and Development, Niigata University, Niigata, Japan | ||
2Bioscience Medical Research Center, Niigata University Medical and Dental Hospital, Niigata, Japan | ||
چکیده | ||
Background: Nonmyeloablative chemotherapy followed by adoptive immunotherapy is an attractive strategy for depleting regulatory T cells in the host. However, its efficacy is transient. Here, we aim to investigate whether cyclic chemoim- munotherapy has therapeutic efficacy against cancer.Methods:We examined the efficacy of cyclic chemoimmunotherapy with cyclophos- phamide and adoptively transferred effector T cells against 5-day, established MCA205 murine skin sarcomas.Results: Cyclophosphamide administration followed by adoptive immunotherapy augmented the trafficking of effector T cells into established tumors. Further, multiple cyclophosphamide administrations helped effector T cells to persist at the sites. Chemoimmunotherapy achieved complete tumor regression even with the transfer of a limited number of effector T cells (5×106).Conclusion: Cyclic chemoimmunotherapy, which maintains adoptively transferred T cells by impairing regulatory T cells, is a potentially suitable treatment for established tumors. | ||
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