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FOXP3 Inhibitory Peptide P60 Increases Efficacy of Cytokine-induced Killer Cells Against Renal and Pancreatic Cancer Cells

  • BACKGROUND/AIM Cytokine-induced killer (CIK) cells are ex vivo expanded major histocompatibility complex (MHC)-unrestricted cytotoxic cells with promising effects against a variety of cancer types. Regulatory T-cells (T-reg) have been shown to reduce the effectiveness of CIK cells against tumor cells. Peptide P60 has been shown to inhibit the immunosuppressive functions of T-regs. This study aimed at examining the effect of p60 on CIK cells efficacy against renal and pancreatic cancer cells. MATERIALS AND METHODS The effect of P60 on CIK cytotoxicity was examined using flow cytometry, WST-8-based cell viability assay and interferon γ (IFNγ) ELISA. RESULTS P60 treatment resulted in a significant decrease in the viability of renal and pancreatic cancer cell lines co-cultured with CIK cells. No increase in IFNγ secretion from CIK cells was detected following treatment with P60. P60 caused no changes in the distribution of major effector cell populations in CIK cell cultures. CONCLUSION P60 may potentiate CIK cell cytotoxicity against tumor cells.

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Document Type:Article
Author:Maria Fitria Setiawan, Oliver Rudan, Annabelle Vogt, Maria A. Gonzalez-Carmona, Bettina Langhans, Roland Schmidt-Wolf, Francesca Garofano, Christian P. Strassburg, Juan J. Lasarte, Noelia Casares, Teresa Lozano, Hans Weiher, Ingo G. H. Schmidt-Wolf
Parent Title (English):Anticancer Research
First Page:5369
Last Page:5374
Pubmed Id:
Publisher:The International Institute of Anticancer Research
Date of first publication:2019/09/30
Tag:Cytokine-induced killer (CIK) cells; FOXP3; adoptive cell transfer; cancer; immunotherapy
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Institut für funktionale Gen-Analytik (IfGA)
Entry in this database:2019/10/08