Authors: Inoue T, Tashiro Y, Takeuchi M, Otani T, Tsuji-Takayama K, Okochi A, Mukae Y, Koreishi M, Yamasaki F, Kumon H, Nakamura S, Kibata M, Kondo E The T cell line HOZOT has a unique FOXP3+CD4+ CD8+CD25+ phenotype, exhibits suppressive activity in allogeneic mixed lymphocyte reactions (MLR), and produces IL-10, defining HOZOT as regulatory T cells (Tregs). Interestingly, in addition to possessing a suppressive Treg ability, HOZOT was also found to show cytotoxicity against certain representative human cancer cell types. In order to disclose the range of anti-tumor activity by HOZOT, we screened it by using a panel of twenty human tumor cell lines with different origins. Consequently, HOZOT showed potent cytocidal effects against a wide spectrum of neoplastic cells including carcinoma...
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