PMID- 24668647 OWN - NLM STAT- MEDLINE DCOM- 20150107 LR - 20201222 IS - 1557-3265 (Electronic) IS - 1078-0432 (Linking) VI - 20 IP - 11 DP - 2014 Jun 1 TI - Chimeric rat/human HER2 efficiently circumvents HER2 tolerance in cancer patients. PG - 2910-21 LID - 10.1158/1078-0432.CCR-13-2663 [doi] AB - PURPOSE: Despite the great success of HER2 vaccine strategies in animal models, effective clinical results have not yet been obtained. We studied the feasibility of using DNA coding for chimeric rat/human HER2 as a tool to break the unresponsiveness of T cells from patients with HER2-overexpressing tumors (HER2-CP). EXPERIMENTAL DESIGN: Dendritic cells (DCs) generated from patients with HER2-overexpressing breast (n = 28) and pancreatic (n = 16) cancer were transfected with DNA plasmids that express human HER2 or heterologous rat sequences in separate plasmids or as chimeric constructs encoding rat/human HER2 fusion proteins and used to activate autologous T cells. Activation was evaluated by IFN-gamma ELISPOT assay, perforin expression, and ability to halt HER2+ tumor growth in vivo. RESULTS: Specific sustained proliferation and IFN-gamma production by CD4 and CD8 T cells from HER2-CP was observed after stimulation with autologous DCs transfected with chimeric rat/human HER2 plasmids. Instead, T cells from healthy donors (n = 22) could be easily stimulated with autologous DCs transfected with any human, rat, or chimeric rat/human HER2 plasmid. Chimeric HER2-transfected DCs from HER2-CP were also able to induce a sustained T-cell response that significantly hindered the in vivo growth of HER2(+) tumors. The efficacy of chimeric plasmids in overcoming tumor-induced T-cell dysfunction relies on their ability to circumvent suppressor effects exerted by regulatory T cells (Treg) and/or interleukin (IL)-10 and TGF-beta1. CONCLUSIONS: These results provide the proof of concept that chimeric rat/human HER2 plasmids can be used as effective vaccines for any HER2-CP with the advantage of being not limited to specific MHC. Clin Cancer Res; 20(11); 2910-21. (c)2014 AACR. CI - (c)2014 American Association for Cancer Research. FAU - Occhipinti, Sergio AU - Occhipinti S AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Sponton, Laura AU - Sponton L AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Rolla, Simona AU - Rolla S AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Caorsi, Cristiana AU - Caorsi C AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Novarino, Anna AU - Novarino A AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Donadio, Michela AU - Donadio M AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Bustreo, Sara AU - Bustreo S AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Satolli, Maria Antonietta AU - Satolli MA AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Pecchioni, Carla AU - Pecchioni C AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Marchini, Cristina AU - Marchini C AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Amici, Augusto AU - Amici A AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Cavallo, Federica AU - Cavallo F AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Cappello, Paola AU - Cappello P AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Pierobon, Daniele AU - Pierobon D AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Novelli, Francesco AU - Novelli F AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy. FAU - Giovarelli, Mirella AU - Giovarelli M AD - Authors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, ItalyAuthors' Affiliations: Departments of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy; Center for Experimental Research and Medical Studies (CERMS), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Immunogenetic and Transplant Biology Service, AO Citta della Salute e della Scienza Torino, Italy; Division of Oncology, Subalpine OncoHematology Cancer Center (COES), AO Citta della Salute e della Scienza di Torino, Torino, Italy; Department of Oncology, University of Turin, Orbassano, Italy; Department of Medical Sciences, University of Torino, Torino, Italy, Department of Molecular Cellular and Animal Biology, University of Camerino, Camerino, Italy mirella.giovarelli@unito.it. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140325 PL - United States TA - Clin Cancer Res JT - Clinical cancer research : an official journal of the American Association for Cancer Research JID - 9502500 RN - 0 (Cancer Vaccines) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Vaccines, DNA) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Animals MH - Breast Neoplasms/*immunology MH - Cancer Vaccines/*immunology/pharmacology MH - Dendritic Cells/immunology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Flow Cytometry MH - Humans MH - Immune Tolerance/immunology MH - Immunohistochemistry MH - Mice MH - Mice, Inbred NOD MH - Mice, SCID MH - Pancreatic Neoplasms/*immunology MH - Plasmids MH - Rats MH - Receptor, ErbB-2/*immunology MH - Recombinant Fusion Proteins/immunology/pharmacology MH - Transfection MH - Transplantation Chimera MH - Vaccines, DNA/*immunology/pharmacology MH - Xenograft Model Antitumor Assays EDAT- 2014/03/29 06:00 MHDA- 2015/01/08 06:00 CRDT- 2014/03/27 06:00 PHST- 2014/03/27 06:00 [entrez] PHST- 2014/03/29 06:00 [pubmed] PHST- 2015/01/08 06:00 [medline] AID - 1078-0432.CCR-13-2663 [pii] AID - 10.1158/1078-0432.CCR-13-2663 [doi] PST - ppublish SO - Clin Cancer Res. 2014 Jun 1;20(11):2910-21. doi: 10.1158/1078-0432.CCR-13-2663. Epub 2014 Mar 25.