PMID- 18317362 OWN - NLM STAT- MEDLINE DCOM- 20080819 LR - 20201212 IS - 1524-9557 (Print) IS - 1524-9557 (Linking) VI - 31 IP - 3 DP - 2008 Apr TI - Interferon-alpha (IFN-alpha)-conditioned DC preferentially stimulate type-1 and limit Treg-type in vitro T-cell responses from RCC patients. PG - 254-62 LID - 10.1097/CJI.0b013e318167b023 [doi] AB - Dendritic cells (DCs) are potent antigen presenting cells and represent attractive candidates for use in novel immunotherapies for patients with renal cell carcinoma (RCC), a disease that has proven refractory to conventional treatment modalities, such as chemotherapy and radiotherapy. Given the perceived need to augment antitumor type-1 immunity (TC1 and Th1) as a therapeutic end point, and the known functional plasticity of DC populations that may display heterogeneous capacity to promote T-cell responses, we sought to identify a preferred DC preparation with this capacity. We compared 2 different preparations of monocyte-derived DC using interferon-alpha (IFN-alpha) (IFN-DC and alphaDC1) with classic DCs "matured" (mDCs) using interleukin-1beta/interleukin-6/tumor necrosis factor-alpha/prostaglandin E2, for their ability to promote autologous TC1 antitumor responses from RCC patients in vitro. IFN-alpha-conditioned DC promoted significantly higher numbers of RCC-specific CD8+ T cells exhibiting a cytotoxic phenotype after in vitro stimulation (IVS) than cytokine cocktail-mDCs. Furthermore, IVS using IFN-DCs was able to diminish regulatory-type T cells among CD4+ T-cell responder populations versus IVS using conventional mDC-based vaccines. These data emphasize an important role for IFN-alpha in modulating the immunologic functions of DCs toward a polarized DC1-type capable of coordinately promoting TH1-type and TC1-type T-cell mediated immunity and supports the translational development of patient-derived IFN-alpha-conditioned DC for use in novel immunotherapies for patients with RCC, and in whom, endogenous tumor-specific TC1 effector cells may be dysfunctional, anergic, or prone to undergo apoptosis. FAU - Gigante, Margherita AU - Gigante M AD - Department of Biomedical Sciences, University of Foggia, Foggia, Italy. FAU - Mandic, Maja AU - Mandic M FAU - Wesa, Amy K AU - Wesa AK FAU - Cavalcanti, Elisabetta AU - Cavalcanti E FAU - Dambrosio, Michele AU - Dambrosio M FAU - Mancini, Vito AU - Mancini V FAU - Battaglia, Michele AU - Battaglia M FAU - Gesualdo, Loreto AU - Gesualdo L FAU - Storkus, Walter J AU - Storkus WJ FAU - Ranieri, Elena AU - Ranieri E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Immunother JT - Journal of immunotherapy (Hagerstown, Md. : 1997) JID - 9706083 RN - 0 (Cytokines) RN - 0 (Interferon Type I) RN - 0 (Interferon-alpha) RN - 0 (Recombinant Proteins) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Carcinoma, Renal Cell/blood/*immunology/pathology MH - Cell Communication MH - Cell Differentiation/drug effects/immunology MH - Cells, Cultured MH - Cytokines/immunology MH - Cytotoxicity, Immunologic MH - Dendritic Cells/*immunology/pathology MH - Humans MH - Immunologic Memory MH - Immunotherapy, Active MH - Interferon Type I/immunology/pharmacology MH - Interferon-alpha/*immunology/metabolism/pharmacology MH - Interferon-gamma/immunology MH - Kidney Neoplasms/blood/*immunology/pathology MH - *Lymphocyte Activation/drug effects MH - Recombinant Proteins MH - T-Lymphocytes, Regulatory/*immunology MH - Th1 Cells/*immunology EDAT- 2008/03/05 09:00 MHDA- 2008/08/20 09:00 CRDT- 2008/03/05 09:00 PHST- 2008/03/05 09:00 [pubmed] PHST- 2008/08/20 09:00 [medline] PHST- 2008/03/05 09:00 [entrez] AID - 00002371-200804000-00004 [pii] AID - 10.1097/CJI.0b013e318167b023 [doi] PST - ppublish SO - J Immunother. 2008 Apr;31(3):254-62. doi: 10.1097/CJI.0b013e318167b023.