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Impaired gp100-Specific CD8+ T-Cell Responses in the Presence of Myeloid-Derived Suppressor Cells in a Spontaneous Mouse Melanoma Model
Murine tumor models that closely reflect human diseases are important tools to investigate carcinogenesis and tumor immunity. The transgenic (tg) mouse strain tg(Grm1)EPv develops spontaneous melanoma due to ectopic overexpression of the metabotropic glutamate receptor 1 (Grm1) in melanocytes. In th...
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Published in: | Journal of investigative dermatology 2015-11, Vol.135 (11), p.2785-2793 |
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creator | Mairhofer, David G. Ortner, Daniela Tripp, Christoph H. Schaffenrath, Sandra Fleming, Viktor Heger, Lukas Komenda, Kerstin Reider, Daniela Dudziak, Diana Chen, Suzie Becker, Jürgen C. Flacher, Vincent Stoitzner, Patrizia |
description | Murine tumor models that closely reflect human diseases are important tools to investigate carcinogenesis and tumor immunity. The transgenic (tg) mouse strain tg(Grm1)EPv develops spontaneous melanoma due to ectopic overexpression of the metabotropic glutamate receptor 1 (Grm1) in melanocytes. In the present study, we characterized the immune status and functional properties of immune cells in tumor-bearing mice. Melanoma development was accompanied by a reduction in the percentages of CD4+ T cells including regulatory T cells (Tregs) in CD45+ leukocytes present in tumor tissue and draining lymph nodes (LNs). In contrast, the percentages of CD8+ T cells were unchanged, and these cells showed an activated phenotype in tumor mice. Endogenous melanoma-associated antigen glycoprotein 100 (gp100)-specific CD8+ T cells were not deleted during tumor development, as revealed by pentamer staining in the skin and draining LNs. They, however, were unresponsive to ex vivo gp100-peptide stimulation in late-stage tumor mice. Interestingly, immunosuppressive myeloid-derived suppressor cells (MDSCs) were recruited to tumor tissue with a preferential accumulation of granulocytic MDSC (grMDSCs) over monocytic MDSC (moMDSCs). Both subsets produced Arginase-1, inducible nitric oxide synthase (iNOS), and transforming growth factor-β and suppressed T-cell proliferation in vitro. In this work, we describe the immune status of a spontaneous melanoma mouse model that provides an interesting tool to develop future immunotherapeutical strategies. |
doi_str_mv | 10.1038/jid.2015.241 |
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The transgenic (tg) mouse strain tg(Grm1)EPv develops spontaneous melanoma due to ectopic overexpression of the metabotropic glutamate receptor 1 (Grm1) in melanocytes. In the present study, we characterized the immune status and functional properties of immune cells in tumor-bearing mice. Melanoma development was accompanied by a reduction in the percentages of CD4+ T cells including regulatory T cells (Tregs) in CD45+ leukocytes present in tumor tissue and draining lymph nodes (LNs). In contrast, the percentages of CD8+ T cells were unchanged, and these cells showed an activated phenotype in tumor mice. Endogenous melanoma-associated antigen glycoprotein 100 (gp100)-specific CD8+ T cells were not deleted during tumor development, as revealed by pentamer staining in the skin and draining LNs. They, however, were unresponsive to ex vivo gp100-peptide stimulation in late-stage tumor mice. Interestingly, immunosuppressive myeloid-derived suppressor cells (MDSCs) were recruited to tumor tissue with a preferential accumulation of granulocytic MDSC (grMDSCs) over monocytic MDSC (moMDSCs). Both subsets produced Arginase-1, inducible nitric oxide synthase (iNOS), and transforming growth factor-β and suppressed T-cell proliferation in vitro. In this work, we describe the immune status of a spontaneous melanoma mouse model that provides an interesting tool to develop future immunotherapeutical strategies.</description><identifier>ISSN: 0022-202X</identifier><identifier>EISSN: 1523-1747</identifier><identifier>DOI: 10.1038/jid.2015.241</identifier><identifier>PMID: 26121214</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Analysis of Variance ; Animals ; CD8-Positive T-Lymphocytes - immunology ; Cell Proliferation ; Disease Models, Animal ; gp100 Melanoma Antigen - immunology ; gp100 Melanoma Antigen - metabolism ; Humans ; Immunology ; Life Sciences ; Lymphocyte Activation ; Melanoma, Experimental - immunology ; Melanoma, Experimental - pathology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Original ; Random Allocation ; Suppressor Factors, Immunologic - immunology ; Suppressor Factors, Immunologic - metabolism ; T-Lymphocytes, Regulatory - immunology ; T-Lymphocytes, Regulatory - metabolism ; Tumor Cells, Cultured</subject><ispartof>Journal of investigative dermatology, 2015-11, Vol.135 (11), p.2785-2793</ispartof><rights>2015 The Society for Investigative Dermatology, Inc</rights><rights>Copyright Nature Publishing Group Nov 2015</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><rights>Copyright © 2015 The Society for Investigative Dermatology, Inc 2015 The Society for Investigative Dermatology, Inc</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c563t-b4fd22b6f03dead13948b02789188b163f4eff71bae941830bf1a79a4fb4d04d3</citedby><cites>FETCH-LOGICAL-c563t-b4fd22b6f03dead13948b02789188b163f4eff71bae941830bf1a79a4fb4d04d3</cites><orcidid>0000-0002-8648-2615</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,786,790,891,27957,27958</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26121214$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-03521196$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Mairhofer, David G.</creatorcontrib><creatorcontrib>Ortner, Daniela</creatorcontrib><creatorcontrib>Tripp, Christoph H.</creatorcontrib><creatorcontrib>Schaffenrath, Sandra</creatorcontrib><creatorcontrib>Fleming, Viktor</creatorcontrib><creatorcontrib>Heger, Lukas</creatorcontrib><creatorcontrib>Komenda, Kerstin</creatorcontrib><creatorcontrib>Reider, Daniela</creatorcontrib><creatorcontrib>Dudziak, Diana</creatorcontrib><creatorcontrib>Chen, Suzie</creatorcontrib><creatorcontrib>Becker, Jürgen C.</creatorcontrib><creatorcontrib>Flacher, Vincent</creatorcontrib><creatorcontrib>Stoitzner, Patrizia</creatorcontrib><title>Impaired gp100-Specific CD8+ T-Cell Responses in the Presence of Myeloid-Derived Suppressor Cells in a Spontaneous Mouse Melanoma Model</title><title>Journal of investigative dermatology</title><addtitle>J Invest Dermatol</addtitle><description>Murine tumor models that closely reflect human diseases are important tools to investigate carcinogenesis and tumor immunity. The transgenic (tg) mouse strain tg(Grm1)EPv develops spontaneous melanoma due to ectopic overexpression of the metabotropic glutamate receptor 1 (Grm1) in melanocytes. In the present study, we characterized the immune status and functional properties of immune cells in tumor-bearing mice. Melanoma development was accompanied by a reduction in the percentages of CD4+ T cells including regulatory T cells (Tregs) in CD45+ leukocytes present in tumor tissue and draining lymph nodes (LNs). In contrast, the percentages of CD8+ T cells were unchanged, and these cells showed an activated phenotype in tumor mice. Endogenous melanoma-associated antigen glycoprotein 100 (gp100)-specific CD8+ T cells were not deleted during tumor development, as revealed by pentamer staining in the skin and draining LNs. They, however, were unresponsive to ex vivo gp100-peptide stimulation in late-stage tumor mice. Interestingly, immunosuppressive myeloid-derived suppressor cells (MDSCs) were recruited to tumor tissue with a preferential accumulation of granulocytic MDSC (grMDSCs) over monocytic MDSC (moMDSCs). Both subsets produced Arginase-1, inducible nitric oxide synthase (iNOS), and transforming growth factor-β and suppressed T-cell proliferation in vitro. In this work, we describe the immune status of a spontaneous melanoma mouse model that provides an interesting tool to develop future immunotherapeutical strategies.</description><subject>Analysis of Variance</subject><subject>Animals</subject><subject>CD8-Positive T-Lymphocytes - immunology</subject><subject>Cell Proliferation</subject><subject>Disease Models, Animal</subject><subject>gp100 Melanoma Antigen - immunology</subject><subject>gp100 Melanoma Antigen - metabolism</subject><subject>Humans</subject><subject>Immunology</subject><subject>Life Sciences</subject><subject>Lymphocyte Activation</subject><subject>Melanoma, Experimental - immunology</subject><subject>Melanoma, Experimental - pathology</subject><subject>Mice</subject><subject>Mice, Inbred C57BL</subject><subject>Mice, Transgenic</subject><subject>Original</subject><subject>Random Allocation</subject><subject>Suppressor Factors, Immunologic - immunology</subject><subject>Suppressor Factors, Immunologic - metabolism</subject><subject>T-Lymphocytes, Regulatory - 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The transgenic (tg) mouse strain tg(Grm1)EPv develops spontaneous melanoma due to ectopic overexpression of the metabotropic glutamate receptor 1 (Grm1) in melanocytes. In the present study, we characterized the immune status and functional properties of immune cells in tumor-bearing mice. Melanoma development was accompanied by a reduction in the percentages of CD4+ T cells including regulatory T cells (Tregs) in CD45+ leukocytes present in tumor tissue and draining lymph nodes (LNs). In contrast, the percentages of CD8+ T cells were unchanged, and these cells showed an activated phenotype in tumor mice. Endogenous melanoma-associated antigen glycoprotein 100 (gp100)-specific CD8+ T cells were not deleted during tumor development, as revealed by pentamer staining in the skin and draining LNs. They, however, were unresponsive to ex vivo gp100-peptide stimulation in late-stage tumor mice. Interestingly, immunosuppressive myeloid-derived suppressor cells (MDSCs) were recruited to tumor tissue with a preferential accumulation of granulocytic MDSC (grMDSCs) over monocytic MDSC (moMDSCs). Both subsets produced Arginase-1, inducible nitric oxide synthase (iNOS), and transforming growth factor-β and suppressed T-cell proliferation in vitro. In this work, we describe the immune status of a spontaneous melanoma mouse model that provides an interesting tool to develop future immunotherapeutical strategies.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>26121214</pmid><doi>10.1038/jid.2015.241</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-8648-2615</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Analysis of Variance Animals CD8-Positive T-Lymphocytes - immunology Cell Proliferation Disease Models, Animal gp100 Melanoma Antigen - immunology gp100 Melanoma Antigen - metabolism Humans Immunology Life Sciences Lymphocyte Activation Melanoma, Experimental - immunology Melanoma, Experimental - pathology Mice Mice, Inbred C57BL Mice, Transgenic Original Random Allocation Suppressor Factors, Immunologic - immunology Suppressor Factors, Immunologic - metabolism T-Lymphocytes, Regulatory - immunology T-Lymphocytes, Regulatory - metabolism Tumor Cells, Cultured |
title | Impaired gp100-Specific CD8+ T-Cell Responses in the Presence of Myeloid-Derived Suppressor Cells in a Spontaneous Mouse Melanoma Model |
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