1
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Peng K, Zhang Y, Liu D, Chen J. MMP2 is a immunotherapy related biomarker and correlated with cancer-associated fibroblasts infiltrate in melanoma. Cancer Cell Int 2023; 23:26. [PMID: 36788565 PMCID: PMC9930295 DOI: 10.1186/s12935-023-02862-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/28/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Mounting evidence supports that matrix metalloproteinase (MMPs) are highly associated with tumor progression and that targeting MMPs may overcome the barrier of immune suppression. Among these, whether MMP2 functions as an immunosuppressive role in melanoma, remains unclear. METHODS The Cancer Genome Atlas (TCGA) and Gene Expression Profiling Interactive Analysis 2 (GEPIA2) databases were used to assess the prognosis of MMP2 in melanoma, after which Tumor immune estimation resource (TIMER) was used to explore the relationship between MMP2 expression and cancer associated fibroblasts (CAFs) infiltration. Finally, we evaluated the efficacy of MMP2 inhibitor on CAFs infiltration and immunotherapy using a mouse melanoma model. RESULTS In general, the expression of MMP2, MMP13, MMP16, MMP17 and MMP25 were significantly associated with skin cutaneous melanoma (SKCM) patients prognosis, among which MMP2 low expression benefited patients the most. Especially, the overall survival (OS) of BRAF mutation patients with high MMP2 expression was significantly lower than the MMP2 low expression group, but there was no significant difference in BRAF wild-type patients. KEGG and GO enrichment analysis indicated that MMP2 related genes were mostly associated with extracellular structure organization, collagen-containing extracellular matrix and extracellular matrix structural constituent. Furthermore, in almost all cancers, MMP2 expression was positively correlated with CAFs infiltration. MMP2 inhibitor works synergistically with PD-1 antibody and induces tumor regression in a mouse melanoma model, which is dependent on decreased CAFs infiltration. CONCLUSIONS This suggests that MMP2 plays a vital role in the regulation of CAFs infiltration, potentially participating in immunotherapy response, and thus representing a valuable target of immunotherapy in melanoma.
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Affiliation(s)
- Kunwei Peng
- grid.412534.5Guangdong Provincial Education Department Key Laboratory of Nano-Immunoregulation Tumour Microenvironment, Department of Medical Oncology, The Second Affiliated Hospital of Guangzhou Medical University, No. 250 Changgang East Road, Guangzhou, 510260 Guangdong People’s Republic of China
| | - Yanyan Zhang
- grid.79703.3a0000 0004 1764 3838Department of Infectious Diseases, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong People’s Republic of China
| | - Deyi Liu
- grid.412534.5Department of General Practice, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong People’s Republic of China
| | - Jingqi Chen
- Guangdong Provincial Education Department Key Laboratory of Nano-Immunoregulation Tumour Microenvironment, Department of Medical Oncology, The Second Affiliated Hospital of Guangzhou Medical University, No. 250 Changgang East Road, Guangzhou, 510260, Guangdong, People's Republic of China. .,Translational Medicine Center, The Second Affiliated Hospital of Guangzhou Medical University, No. 250 Changgang East Road, Guangzhou, 510260, Guangdong, People's Republic of China.
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2
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Alarcon NO, Jaramillo M, Mansour HM, Sun B. Therapeutic Cancer Vaccines—Antigen Discovery and Adjuvant Delivery Platforms. Pharmaceutics 2022; 14:pharmaceutics14071448. [PMID: 35890342 PMCID: PMC9325128 DOI: 10.3390/pharmaceutics14071448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 12/15/2022] Open
Abstract
For decades, vaccines have played a significant role in protecting public and personal health against infectious diseases and proved their great potential in battling cancers as well. This review focused on the current progress of therapeutic subunit vaccines for cancer immunotherapy. Antigens and adjuvants are key components of vaccine formulations. We summarized several classes of tumor antigens and bioinformatic approaches of identification of tumor neoantigens. Pattern recognition receptor (PRR)-targeting adjuvants and their targeted delivery platforms have been extensively discussed. In addition, we emphasized the interplay between multiple adjuvants and their combined delivery for cancer immunotherapy.
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Affiliation(s)
- Neftali Ortega Alarcon
- Skaggs Pharmaceutical Sciences Center, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA; (N.O.A.); (M.J.); (H.M.M.)
| | - Maddy Jaramillo
- Skaggs Pharmaceutical Sciences Center, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA; (N.O.A.); (M.J.); (H.M.M.)
| | - Heidi M. Mansour
- Skaggs Pharmaceutical Sciences Center, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA; (N.O.A.); (M.J.); (H.M.M.)
- The University of Arizona Cancer Center, Tucson, AZ 85721, USA
- Department of Medicine, College of Medicine, The University of Arizona, Tucson, AZ 85724, USA
- BIO5 Institute, The University of Arizona, Tucson, AZ 85721, USA
| | - Bo Sun
- Skaggs Pharmaceutical Sciences Center, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA; (N.O.A.); (M.J.); (H.M.M.)
- The University of Arizona Cancer Center, Tucson, AZ 85721, USA
- BIO5 Institute, The University of Arizona, Tucson, AZ 85721, USA
- Correspondence: ; Tel.: +1-520-621-6420
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3
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Muniz-Bongers LR, McClain CB, Saxena M, Bongers G, Merad M, Bhardwaj N. MMP2 and TLRs modulate immune responses in the tumor microenvironment. JCI Insight 2021; 6:144913. [PMID: 34032639 PMCID: PMC8262464 DOI: 10.1172/jci.insight.144913] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 05/13/2021] [Indexed: 12/20/2022] Open
Abstract
The presence of an immunosuppressive tumor microenvironment is a major obstacle in the success of cancer immunotherapies. Because extracellular matrix components can shape the microenvironment, we investigated the role of matrix metalloproteinase 2 (MMP2) in melanoma tumorigenesis. We found that MMP2 signals proinflammatory pathways on antigen presenting cells, and this requires both TLR2 and TLR4. B16 melanoma cells that express MMP2 at baseline have slower kinetics in Tlr2–/–Tlr4–/– mice, implicating MMP2 in promoting tumor growth. Indeed, Mmp2 overexpression in B16 cells potentiated rapid tumor growth, which was accompanied by reduced intratumoral cytolytic cells and increased M2 macrophages. In contrast, knockdown of Mmp2 slowed tumor growth and enhanced T cell proliferation and NK cell recruitment. Finally, we found that these effects of MMP2 are mediated through dysfunctional DC–T cell cross-talk as they are lost in Batf3–/– and Rag2–/– mice. These findings provide insights into the detrimental role of endogenous alarmins like MMP2 in modulating immune responses in the tumor microenvironment.
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Affiliation(s)
| | | | - Mansi Saxena
- Tisch Cancer Institute.,Hematology and Oncology Department, and
| | - Gerold Bongers
- Tisch Cancer Institute.,Oncological Sciences Department, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Miriam Merad
- Tisch Cancer Institute.,Oncological Sciences Department, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Nina Bhardwaj
- Tisch Cancer Institute.,Hematology and Oncology Department, and
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4
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Hoffmann C, Vacher S, Sirven P, Lecerf C, Massenet L, Moreira A, Surun A, Schnitzler A, Klijanienko J, Mariani O, Jeannot E, Badois N, Lesnik M, Choussy O, Le Tourneau C, Guillot-Delost M, Kamal M, Bieche I, Soumelis V. MMP2 as an independent prognostic stratifier in oral cavity cancers. Oncoimmunology 2020; 9:1754094. [PMID: 32934875 PMCID: PMC7466851 DOI: 10.1080/2162402x.2020.1754094] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/25/2020] [Indexed: 12/16/2022] Open
Abstract
Background Around 25% of oral cavity squamous cell carcinoma (OCSCC) are not controlled by the standard of care, but there is currently no validated biomarker to identify those patients. Our objective was to determine a robust biomarker for severe OCSCC, using a biology-driven strategy. Patients and methods Tumor and juxtatumor secretome were analyzed in a prospective discovery cohort of 37 OCSCC treated by primary surgery. Independent biomarker validation was performed by RTqPCR in a retrospective cohort of 145 patients with similar clinical features. An 18-gene signature (18 G) predictive of the response to PD-1 blockade was evaluated in the same cohort. Results Among 29 deregulated molecules identified in a secretome analysis, including chemokines, cytokines, growth factors, and molecules related to tumor growth and tissue remodeling, only soluble MMP2 was a prognostic biomarker. In our validation cohort, high levels of MMP2 and CD276, and low levels of CXCL10 and STAT1 mRNA were associated with poor prognosis in univariate analysis (Kaplan-Meier). MMP2 (p = .001) and extra-nodal extension (ENE) (p = .006) were independent biomarkers of disease-specific survival (DSS) in multivariate analysis and defined prognostic groups with 5-year DSS ranging from 36% (MMP2highENE+) to 88% (MMP2lowENE-). The expression of 18 G was similar in the different prognostic groups, suggesting comparable responsiveness to anti-PD-1. Conclusion High levels of MMP2 were an independent and validated prognostic biomarker, surpassing other molecules of a large panel of the tumor and immune-related processes, which may be used to select poor prognosis patients for intensified neoadjuvant or adjuvant regimens.
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Affiliation(s)
- Caroline Hoffmann
- Paris Sciences and Letters (PSL) University, Paris, France
- INSERM U932 Research Unit, Immunity and Cancer, Paris, France
- Department of Surgical Oncology, Institut Curie, Paris & Saint-Cloud, France
| | - Sophie Vacher
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Genetics, Institut Curie, Paris, France
| | - Philémon Sirven
- Paris Sciences and Letters (PSL) University, Paris, France
- INSERM U932 Research Unit, Immunity and Cancer, Paris, France
| | - Charlotte Lecerf
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris & Saint-Cloud, France
| | - Lucile Massenet
- Paris Sciences and Letters (PSL) University, Paris, France
- INSERM U932 Research Unit, Immunity and Cancer, Paris, France
| | - Aurélie Moreira
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris & Saint-Cloud, France
| | - Aurore Surun
- SIREDO Cancer Center (Care, Innovation and Research in Pediatric, Adolescents and Young Adults Oncology), Institut Curie, Paris, France
- Paris Descartes University, Paris, France
| | - Anne Schnitzler
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Genetics, Institut Curie, Paris, France
| | - Jerzy Klijanienko
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Pathology, Institut Curie, Paris, France
| | - Odette Mariani
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Pathology, Institut Curie, Paris, France
- Biological Resources Center, Institut Curie, Paris, France
| | - Emmanuelle Jeannot
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Pathology, Institut Curie, Paris, France
| | - Nathalie Badois
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Surgical Oncology, Institut Curie, Paris & Saint-Cloud, France
| | - Maria Lesnik
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Surgical Oncology, Institut Curie, Paris & Saint-Cloud, France
| | - Olivier Choussy
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Surgical Oncology, Institut Curie, Paris & Saint-Cloud, France
| | - Christophe Le Tourneau
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris & Saint-Cloud, France
- INSERM U900 Research Unit, Saint-Cloud, France
| | - Maude Guillot-Delost
- Paris Sciences and Letters (PSL) University, Paris, France
- INSERM U932 Research Unit, Immunity and Cancer, Paris, France
- Center of Clinical Investigation, CIC IGR-Curie, Paris, France
| | - Maud Kamal
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Drug Development and Innovation (D3i), Institut Curie, Paris & Saint-Cloud, France
| | - Ivan Bieche
- Paris Sciences and Letters (PSL) University, Paris, France
- Department of Genetics, Institut Curie, Paris, France
- Faculty of Pharmaceutical and Biological Sciences, INSERM U1016 Research Unit, Paris Descartes University, Paris, France
| | - Vassili Soumelis
- Paris Sciences and Letters (PSL) University, Paris, France
- INSERM U932 Research Unit, Immunity and Cancer, Paris, France
- Clinical Immunology Department, Institut Curie, Paris, France
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5
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Sugiyama A, Okada M, Yamawaki H. Pathophysiological roles of canstatin on myofibroblasts after myocardial infarction in rats. Eur J Pharmacol 2017; 807:32-43. [PMID: 28438649 DOI: 10.1016/j.ejphar.2017.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/13/2017] [Accepted: 04/19/2017] [Indexed: 12/19/2022]
Abstract
Myofibroblasts play an important role during remodeling process after myocardial infarction through proliferation, migration, production and degradation of extracellular matrix (ECM) and contraction. Canstatin, a 24kDa polypeptide, is cleaved from α2 chain of type IV collagen, which is a major component of basement membrane around cardiomyocytes. We examined the effects of canstatin on myofibroblasts isolated from the areas of myocardial infarction. Myocardial infarction model was made by ligating left anterior descending artery of Wistar rats. Two weeks after the operation, the cells were isolated by an explant method and identified as myofibroblasts with immunofluorescence staining. Cell counting assay was performed to examine cell proliferation. Boyden chamber assay was performed to examine cell migration. Expression and phosphorylation of proteins were detected by Western blotting. Collagen gel contraction assay was performed to measure cell contractility. Canstatin stimulated proliferation, secretion of matrix metalloproteinases, expression of cyclooxygenase (COX)-2, and inhibited collagen gel contraction in myofibroblasts. Canstatin increased Akt phosphorylation. LY294002, a phosphoinositide-3-kinase/Akt inhibitor, inhibited the canstatin-induced proliferation. NS-398, a COX-2 inhibitor, suppressed the inhibitory effect of canstatin on collagen gel contraction. Canstatin expression in areas of myocardial infarction 2 weeks after surgery decreased. We for the first time demonstrate that canstatin is an endogenous bioactive molecule regulating the various functions of myofibroblasts after myocardial infarction. The decrease of canstatin expression in the maturated areas of myocardial infarction might lead to stabilization of scar tissues perhaps in part through the reduction of proliferation and ECM degradation as well as the stimulation of contractility in myofibroblasts.
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Affiliation(s)
- Akira Sugiyama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Japan
| | - Muneyoshi Okada
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Japan.
| | - Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Japan
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6
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Matias D, Balça-Silva J, Dubois LG, Pontes B, Ferrer VP, Rosário L, do Carmo A, Echevarria-Lima J, Sarmento-Ribeiro AB, Lopes MC, Moura-Neto V. Dual treatment with shikonin and temozolomide reduces glioblastoma tumor growth, migration and glial-to-mesenchymal transition. Cell Oncol (Dordr) 2017; 40:247-261. [PMID: 28401486 DOI: 10.1007/s13402-017-0320-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2017] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Glioblastomas (GBM) comprise 17% of all primary brain tumors. These tumors are extremely aggressive due to their infiltrative capacity and chemoresistance, with glial-to-mesenchymal transition (GMT) proteins playing a prominent role in tumor invasion. One compound that has recently been used to reduce the expression of these proteins is shikonin (SHK), a naphthoquinone with anti-tumor properties. Temozolomide (TMZ), the most commonly used chemotherapeutic agent in GBM treatment, has so far not been studied in combination with SHK. Here, we investigated the combined effects of these two drugs on the proliferation and motility of GBM-derived cells. METHODS The cytotoxic and proliferative effects of SHK and TMZ on human GBM-derived cells were tested using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), Ki67 staining and BrdU incorporation assays. The migration capacities of these cells were evaluated using a scratch wound assay. The expression levels of β3 integrin, metalloproteinases (MMPs) and GMT-associated proteins were determined by Western blotting and immunocytochemistry. RESULTS We found that GBM-derived cells treated with a combination of SHK and TMZ showed decreases in their proliferation and migration capacities. These decreases were followed by the suppression of GMT through a reduction of β3 integrin, MMP-2, MMP-9, Slug and vimentin expression via inactivation of PI3K/AKT signaling. CONCLUSION From our results we conclude that dual treatment with SHK and TMZ may constitute a powerful new tool for GBM treatment by reducing therapy resistance and tumor recurrence.
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Affiliation(s)
- Diana Matias
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil.,Institute of Biomedical Sciences at Federal University of Rio de Janeiro (ICB/UFRJ), Rio de Janeiro, 21941-902, Brazil
| | - Joana Balça-Silva
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil.,Center for Neuroscience and Cell Biology and Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Rua Larga Faculdade de Medicina, Pólo I, 1° andar, 3004-504, Coimbra, Portugal.,Faculty of Medicine at University of Coimbra (FMUC), Pólo III - Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-354, Coimbra, Portugal
| | - Luiz Gustavo Dubois
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil
| | - Bruno Pontes
- Institute of Biomedical Sciences at Federal University of Rio de Janeiro (ICB/UFRJ), Rio de Janeiro, 21941-902, Brazil
| | - Valéria Pereira Ferrer
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil
| | - Luciane Rosário
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil
| | - Anália do Carmo
- Center for Neuroscience and Cell Biology and Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Rua Larga Faculdade de Medicina, Pólo I, 1° andar, 3004-504, Coimbra, Portugal.,Hospital Center and University of Coimbra (CHUC), Praceta Prof. Mota Pinto, 3000-075, Coimbra, Portugal
| | - Juliana Echevarria-Lima
- Paulo de Góes Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Ana Bela Sarmento-Ribeiro
- Center for Neuroscience and Cell Biology and Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Rua Larga Faculdade de Medicina, Pólo I, 1° andar, 3004-504, Coimbra, Portugal.,Faculty of Medicine at University of Coimbra (FMUC), Pólo III - Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-354, Coimbra, Portugal.,Hospital Center and University of Coimbra (CHUC), Praceta Prof. Mota Pinto, 3000-075, Coimbra, Portugal
| | - Maria Celeste Lopes
- Center for Neuroscience and Cell Biology and Institute for Biomedical Imaging and Life Sciences (CNC.IBILI), Rua Larga Faculdade de Medicina, Pólo I, 1° andar, 3004-504, Coimbra, Portugal.,Faculty of Pharmacy at University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal
| | - Vivaldo Moura-Neto
- Brain's Biomedicine Laboratory, Paulo Niemeyer State Brain Institute, Secretaria de Estado de Saúde do Rio de Janeiro, Rua do Resende 156, Rio de Janeiro, 20231-092, Rio de Janeiro, Brazil.
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7
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Modulation of innate immunity in the tumor microenvironment. Cancer Immunol Immunother 2016; 65:1261-8. [PMID: 27344341 DOI: 10.1007/s00262-016-1859-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 06/10/2016] [Indexed: 01/27/2023]
Abstract
A recent report from the Center for Disease Control identified melanoma as being among the highest causes of cancer-related mortalities in the USA. While interventions such as checkpoint blockade have made substantial impact in terms of improving response rates and overall survival, a significant number of patients fail to respond to treatment or become resistant to therapy. A better understanding of the tumor microenvironment in these patients becomes imperative for identifying immune suppressive mechanisms that impact the development of effective anti-tumor immune responses. We have investigated innate immune cells (dendritic cells, NK cells) in the tumor microenvironment (TME) in order to devise effective targeted anticancer immune therapies. We find that matrix metalloproteinase-2 (MMP-2), secreted from melanoma cells and stromal cells, cleaves IFNAR1 and stimulates TLR-2 on dendritic cells (DC) within the TME. Both these events independently culminate in programing the DCs to promote pro-tumorigenic TH2 T cell differentiation. In addition, we have shown that NK cells become functionally exhausted in melanoma patients. We identified the expression of Tim-3 as one of the factors responsible for NK cell exhaustion and showed that anti-Tim3 antibodies partially reversed this exhaustion. We have initiated local intervention strategies such as intra-tumoral administration of DC activating Poly-ICLC and compared the efficacy of different TLR agonists and melanoma antigens for use as combination tumor vaccine in clinical trials. Such approaches will provide a unique insight into tumor biology and will facilitate in development of highly effective and cell type-specific immune therapies.
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8
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Ebstein F, Keller M, Paschen A, Walden P, Seeger M, Bürger E, Krüger E, Schadendorf D, Kloetzel PM, Seifert U. Exposure to Melan-A/MART-126-35 tumor epitope specific CD8(+)T cells reveals immune escape by affecting the ubiquitin-proteasome system (UPS). Sci Rep 2016; 6:25208. [PMID: 27143649 PMCID: PMC4855237 DOI: 10.1038/srep25208] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 04/12/2016] [Indexed: 01/01/2023] Open
Abstract
Efficient processing of target antigens by the ubiquitin-proteasome-system (UPS) is essential for treatment of cancers by T cell therapies. However, immune escape due to altered expression of IFN-γ-inducible components of the antigen presentation machinery and consequent inefficient processing of HLA-dependent tumor epitopes can be one important reason for failure of such therapies. Here, we show that short-term co-culture of Melan-A/MART-1 tumor antigen-expressing melanoma cells with Melan-A/MART-126-35-specific cytotoxic T lymphocytes (CTL) led to resistance against CTL-induced lysis because of impaired Melan-A/MART-126-35 epitope processing. Interestingly, deregulation of p97/VCP expression, which is an IFN-γ-independent component of the UPS and part of the ER-dependent protein degradation pathway (ERAD), was found to be essentially involved in the observed immune escape. In support, our data demonstrate that re-expression of p97/VCP in Melan-A/MART-126-35 CTL-resistant melanoma cells completely restored immune recognition by Melan-A/MART-126-35 CTL. In conclusion, our experiments show that impaired expression of IFN-γ-independent components of the UPS can exert rapid immune evasion of tumor cells and suggest that tumor antigens processed by distinct UPS degradation pathways should be simultaneously targeted in T cell therapies to restrict the likelihood of immune evasion due to impaired antigen processing.
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Affiliation(s)
- Frédéric Ebstein
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
| | - Martin Keller
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
| | - Annette Paschen
- Department of Dermatology, University Hospital, University Duisburg-Essen and German Cancer Consortium (DKTK), Hufelandstr. 55, 45122 Essen, Germany
| | - Peter Walden
- Charité-Universitätsmedizin Berlin, Klinik für Dermatologie, Venerologie und Allergologie, Charité Platz 1, 10117 Berlin, Germany
| | - Michael Seeger
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
| | - Elke Bürger
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
| | - Elke Krüger
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
| | - Dirk Schadendorf
- Department of Dermatology, University Hospital, University Duisburg-Essen and German Cancer Consortium (DKTK), Hufelandstr. 55, 45122 Essen, Germany
| | - Peter-M. Kloetzel
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
- Berlin Institute of Health Kapelle-Ufer 2 10117 Berlin, Germany
| | - Ulrike Seifert
- Charité-Universitätsmedizin Berlin, Institut für Biochemie, Charité-Platz 1/ Virchowweg 6, 10117 Berlin, Germany
- Institut für Molekulare und Klinische Immunologie, Medizinische Fakultät der Otto-von-Guericke-Universität Magdeburg, Leipzigerstr. 44, 39120 Magdeburg, Germany
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9
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Kranz LM, Birtel M, Krienke C, Grunwitz C, Petschenka J, Reuter KC, van de Roemer N, Vascotto F, Vormehr M, Kreiter S, Diken M. CIMT 2015: The right patient for the right therapy - Report on the 13th annual meeting of the Association for Cancer Immunotherapy. Hum Vaccin Immunother 2015; 12:213-21. [PMID: 26186022 PMCID: PMC4962731 DOI: 10.1080/21645515.2015.1068485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 06/29/2015] [Indexed: 12/22/2022] Open
Affiliation(s)
- Lena M Kranz
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
- Research Center for Immunotherapy (FZI); University Medical Center; Johannes Gutenberg University; Mainz, Germany
| | - Matthias Birtel
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
| | - Christina Krienke
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
- Research Center for Immunotherapy (FZI); University Medical Center; Johannes Gutenberg University; Mainz, Germany
| | - Christian Grunwitz
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
- BioNTech RNA Pharmaceuticals GmbH; Mainz, Germany
| | - Jutta Petschenka
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
| | | | - Niels van de Roemer
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
- Research Center for Immunotherapy (FZI); University Medical Center; Johannes Gutenberg University; Mainz, Germany
| | - Fulvia Vascotto
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
| | - Mathias Vormehr
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
- BioNTech RNA Pharmaceuticals GmbH; Mainz, Germany
| | - Sebastian Kreiter
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
| | - Mustafa Diken
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz gGmbH; Mainz, Germany
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10
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Godefroy E, Gallois A, Idoyaga J, Merad M, Tung N, Monu N, Saenger Y, Fu Y, Ravindran R, Pulendran B, Jotereau F, Trombetta S, Bhardwaj N. Activation of toll-like receptor-2 by endogenous matrix metalloproteinase-2 modulates dendritic-cell-mediated inflammatory responses. Cell Rep 2014; 9:1856-1870. [PMID: 25466255 DOI: 10.1016/j.celrep.2014.10.067] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 09/22/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022] Open
Abstract
Matrix metalloproteinase-2 (MMP-2) is involved in several physiological mechanisms, including wound healing and tumor progression. We show that MMP-2 directly stimulates dendritic cells (DCs) to both upregulate OX40L on the cell surface and secrete inflammatory cytokines. The mechanism underlying DC activation includes physical association with Toll-like receptor-2 (TLR2), leading to NF-κB activation, OX40L upregulation on DCs, and ensuing TH2 differentiation. Significantly, MMP-2 polarizes T cells toward type 2 responses in vivo, in a TLR2-dependent manner. MMP-2-dependent type 2 polarization may represent a key immune regulatory mechanism for protection against a broad array of disorders, such as inflammatory, infectious, and autoimmune diseases, which can be hijacked by tumors to evade immunity.
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Affiliation(s)
- Emmanuelle Godefroy
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Anne Gallois
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Juliana Idoyaga
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA; Laboratory of Cellular Physiology and Immunology and Chris Browne Center for Immunology and Immune Diseases, The Rockefeller University, New York, NY 10065, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Miriam Merad
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Navpreet Tung
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Ngozi Monu
- New York University Langone Medical Center, Cancer Institute, New York, NY 10016, USA
| | - Yvonne Saenger
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Yichun Fu
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA
| | - Rajesh Ravindran
- Emory Vaccine Center, Department of Pathology, Emory University, Atlanta, GA 30322, USA
| | - Bali Pulendran
- Emory Vaccine Center, Department of Pathology, Emory University, Atlanta, GA 30322, USA
| | | | - Sergio Trombetta
- New York University Langone Medical Center, Cancer Institute, New York, NY 10016, USA
| | - Nina Bhardwaj
- Mount Sinai School of Medicine, Tisch Cancer Institute, New York, NY 10029, USA.
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11
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Munir S, Andersen GH, Met Ö, Donia M, Frøsig TM, Larsen SK, Klausen TW, Svane IM, Andersen MH. HLA-restricted CTL that are specific for the immune checkpoint ligand PD-L1 occur with high frequency in cancer patients. Cancer Res 2013; 73:1764-76. [PMID: 23328583 DOI: 10.1158/0008-5472.can-12-3507] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PD-L1 (CD274) contributes to functional exhaustion of T cells and limits immune responses in patients with cancer. In this study, we report the identification of an human leukocyte antigen (HLA)-A2-restricted epitope from PD-L1, and we describe natural, cytolytic T-cell reactivity against PD-L1 in the peripheral blood of patients with cancer and healthy individuals. Notably, PD-L1-specific T cells were able not only to recognize and kill tumor cells but also PD-L1-expressing dendritic cells in a PD-L1-dependent manner, insofar as PD-L1 ablation rescued dendritic cells from killing. Furthermore, by incubating nonprofessional antigen-presenting cells with long peptides from PD-L1, we found that PD-L1 was rapidly internalized, processed, and cross-presented by HLA-A2 on the cell surface. Apparently, this cross-presentation was TAP-independent, as it was conducted not only by B cells but in addition by TAP-deficient T2-cells. This is intriguing, as soluble PD-L1 has been detected in the sera from patients with cancer. PD-L1-specific CTL may boost immunity by the killing of immunosuppressive tumor cells as well as regulatory cells. However, PD-L1-specific CTLs may as well suppress immunity by the elimination of normal immune cells especially PD-L1 expressing mature dendritic cells.
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Affiliation(s)
- Shamaila Munir
- Center for Cancer Immune Therapy, Department of Hematology and Oncology, Copenhagen University Hospital, Herlev, Herlev Ringvej, Herlev, Denmark
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12
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Aspord C, Leccia MT, Salameire D, Laurin D, Chaperot L, Charles J, Plumas J. HLA-A*0201 + Plasmacytoid Dendritic Cells Provide a Cell-Based Immunotherapy for Melanoma Patients. J Invest Dermatol 2012; 132:2395-2406. [DOI: 10.1038/jid.2012.152] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Jiao Y, Feng X, Zhan Y, Wang R, Zheng S, Liu W, Zeng X. Matrix metalloproteinase-2 promotes αvβ3 integrin-mediated adhesion and migration of human melanoma cells by cleaving fibronectin. PLoS One 2012; 7:e41591. [PMID: 22848537 PMCID: PMC3407216 DOI: 10.1371/journal.pone.0041591] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Accepted: 06/27/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Matrix metalloproteinase-2 (MMP-2) is a key regulator in the migration of tumor cells. αvβ3 integrin has been reported to play a critical role in cell adhesion and regulate the migration of tumor cells by promoting MMP-2 activation. However, little is known about the effects of MMP-2 on αvβ3 integrin activity and αvβ3 integrin-mediated adhesion and migration of tumor cells. METHODOLOGY/PRINCIPAL FINDINGS Human melanoma cells were seeded using an agarose drop model and/or subjected to in vitro analysis using immunofluorescence, adhesion, migration and invasion assays to investigate the relationship between active MMP-2 and αvβ3 integrin during the adhesion and migration of the tumor cells. We found that MMP-2 was localized at the leading edge of spreading cells before αvβ3 integrin. αvβ3 integrin-mediated adhesion and migration of the tumor cells were inhibited by a MMP-2 inhibitor. MMP-2 cleaved fibronectin into small fragments, which promoted the adhesion and migration of the tumor cells. CONCLUSION/SIGNIFICANCE MMP-2 cleaves fibronectin into small fragments to enhance the adhesion and migration of human melanoma cells mediated by αvβ3 integrin. These results indicate that MMP-2 may guide the direction of the tumor cell migration.
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Affiliation(s)
- Yang Jiao
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Xue Feng
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Yinpeng Zhan
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Ruifei Wang
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Sheng Zheng
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Wenguang Liu
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
| | - Xianlu Zeng
- Institute of Genetics and Cytology, Northeast Normal University, Changchun, Jilin, China
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14
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Anwar A, Li M, Frid MG, Kumar B, Gerasimovskaya EV, Riddle SR, McKeon BA, Thukaram R, Meyrick BO, Fini MA, Stenmark KR. Osteopontin is an endogenous modulator of the constitutively activated phenotype of pulmonary adventitial fibroblasts in hypoxic pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol 2012; 303:L1-L11. [PMID: 22582113 DOI: 10.1152/ajplung.00050.2012] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Increased cell proliferation and migration, of several cell types are key components of vascular remodeling observed in pulmonary hypertension (PH). Our previous data demonstrate that adventitial fibroblasts isolated from pulmonary arteries of chronically hypoxic hypertensive calves (termed PH-Fibs) exhibit a "constitutively activated" phenotype characterized by high proliferative and migratory potential. Osteopontin (OPN) has been shown to promote several cellular activities including growth and migration in cancer cells. We thus tested the hypothesis that elevated OPN expression confers the "activated" highly proproliferative and promigratory/invasive phenotype of PH-Fibs. Our results demonstrate that, both in vivo and ex vivo, PH-Fibs exhibited increased expression of OPN, as well as its cognate receptors, α(V)β(3) and CD44, compared with control fibroblasts (CO-Fibs). Augmented OPN expression in PH-Fibs corresponded to their high proliferative, migratory, and invasive properties and constitutive activation of ERK1/2 and AKT signaling. OPN silencing via small interfering RNA or sequestering OPN production by specific antibodies led to decreased proliferation, migration, invasion, and attenuated ERK1/2, AKT phosphorylation in PH-Fibs. Furthermore, increasing OPN levels in CO-Fibs via recombinant OPN resulted in significant increases in their proliferative, migratory, and invasive capabilities to the levels resembling those of PH-Fibs. Thus our data suggest OPN as an essential contributor to the activated (highly proliferative, migratory, and proinvasive) phenotype of pulmonary adventitial fibroblasts in hypoxic PH.
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Affiliation(s)
- Adil Anwar
- Department of Pediatrics, University of Colorado Denver, Aurora, CO 80045, USA
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15
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Goodman SL, Grote HJ, Wilm C. Matched rabbit monoclonal antibodies against αv-series integrins reveal a novel αvβ3-LIBS epitope, and permit routine staining of archival paraffin samples of human tumors. Biol Open 2012; 1:329-40. [PMID: 23213423 PMCID: PMC3509452 DOI: 10.1242/bio.2012364] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The relationship between integrin expression and function in pathologies is often contentious as comparisons between human pathological expression and expression in cell lines is difficult. In addition, the expression of even integrins αvβ6 and αvβ8 in tumor cell lines is not comprehensively documented. Here, we describe rabbit monoclonal antibodies (RabMabs) against the extracellular domains of αv integrins that react with both native integrins and formalin fixed, paraffin embedded (FFPE) human tissues. These RabMabs, against αvβ3 (EM22703), αvβ5 (EM09902), αvβ6 (EM05201), αvβ8 (EM13309), and pan-αv (EM01309), recognize individual integrin chains in Western blots and in flow cytometry. EM22703 detected a ligand-induced binding site (LIBS), reporting an epitope enhanced by the binding of an RGD-peptide to αvβ3. αvβ8 was rarely expressed in human tumor specimens, and weakly expressed in non-small-cell lung carcinoma (NSCLC). However, ovarian carcinoma cell lines expressed αvβ8, as did some melanoma cells, whereas U87MG glioma lacked αvβ8 expression. We observed an unexpected strong expression of αvβ6 in tumor samples of invasive ductal breast adenoma, colorectal carcinoma (CRC), and NSCLC. αvβ3 was strongly expressed in some invasive NSCLC cohorts. Interestingly, PC3 prostate cell and human prostate tumors did not express αvβ3. The RabMabs stained plasma membranes in FFPE-immunohistochemistry (IHC) samples of tumor cell lines from lung, ovary, colon, prostate, squamous cell carcinoma of head and neck (SCCHN), breast, and pancreas carcinomas. The RabMabs are unique tools for probing αv integrin biology, and suggest that especially αvβ6 and αvβ8 biologies still have much to reveal.
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16
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Mukaida N. Research Highlights. Immunotherapy 2011. [DOI: 10.2217/imt.11.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Naofumi Mukaida
- Division of Moleuclar Bioregulation, Cancer Research Institute, Kanazawa University Kakuma-machi, Kanazawa 920-1192, Japan
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17
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Vigneron N, Van den Eynde BJ. Insights into the processing of MHC class I ligands gained from the study of human tumor epitopes. Cell Mol Life Sci 2011; 68:1503-20. [PMID: 21387143 PMCID: PMC11114561 DOI: 10.1007/s00018-011-0658-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 02/17/2011] [Accepted: 02/18/2011] [Indexed: 12/29/2022]
Abstract
The molecular definition of tumor antigens recognized by cytolytic T lymphocytes (CTL) started in the late 1980s, at a time when the MHC class I antigen processing field was in its infancy. Born together, these two fields of science evolved together and provided each other with critical insights. Over the years, stimulated by the potential interest of tumor antigens for cancer immunotherapy, scientists have identified and characterized numerous antigens recognized by CTL on human tumors. These studies have provided a wealth of information relevant to the mode of production of antigenic peptides presented by MHC class I molecules. A number of tumor antigenic peptides were found to result from unusual mechanisms occurring at the level of transcription, translation or processing. Although many of these mechanisms occur in the cell at very low level, they are relevant to the immune system as they determine the killing of tumor cells by CTL, which are sensitive to low levels of peptide/MHC complexes. Moreover, these unusual mechanisms were found to occur not only in tumor cells but also in normal cells. Thereby, the study of tumor antigens has illuminated many aspects of MHC class I processing. We review here those insights into the MHC I antigen processing pathway that result from the characterization of human tumor antigens recognized by CTL.
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Affiliation(s)
- Nathalie Vigneron
- Ludwig Institute for Cancer Research, Brussels Branch and de Duve Institute, Université Catholique de Louvain, Avenue Hippocrate 74, UCL 7459, 1200 Brussels, Belgium
| | - Benoît J. Van den Eynde
- Ludwig Institute for Cancer Research, Brussels Branch and de Duve Institute, Université Catholique de Louvain, Avenue Hippocrate 74, UCL 7459, 1200 Brussels, Belgium
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18
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Godefroy E, Manches O, Dréno B, Hochman T, Rolnitzky L, Labarrière N, Guilloux Y, Goldberg J, Jotereau F, Bhardwaj N. Matrix metalloproteinase-2 conditions human dendritic cells to prime inflammatory T(H)2 cells via an IL-12- and OX40L-dependent pathway. Cancer Cell 2011; 19:333-46. [PMID: 21397857 PMCID: PMC3073826 DOI: 10.1016/j.ccr.2011.01.037] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 12/22/2010] [Accepted: 01/21/2011] [Indexed: 12/24/2022]
Abstract
Matrix metalloproteinase-2 (MMP-2) is a proteolytic enzyme degrading the extracellular matrix and overexpressed by many tumors. Here, we documented the presence of MMP-2-specific CD4(+) T cells in tumor-infiltrating lymphocytes (TILs) from melanoma patients. Strikingly, MMP-2-specific CD4(+) T cells displayed an inflammatory T(H)2 profile, i.e., mainly secreting TNF-α, IL-4, and IL-13 and expressing GATA-3. Furthermore, MMP-2-conditioned dendritic cells (DCs) primed naïve CD4(+) T cells to differentiate into an inflammatory T(H)2 phenotype through OX40L expression and inhibition of IL-12p70 production. MMP-2 degrades the type I IFN receptor, thereby preventing STAT1 phosphorylation, which is necessary for IL-12p35 production. Active MMP-2, therefore, acts as an endogenous type 2 "conditioner" and may play a role in the observed prevalence of detrimental type 2 responses in melanoma.
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Affiliation(s)
- Emmanuelle Godefroy
- New York University Langone Medical Center, Cancer Institute, New York, NY, USA
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19
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Sarrabayrouse G, Corvaisier M, Ouisse LH, Bossard C, Le Mével B, Potiron L, Meurette G, Gervois N, Jotereau F. Tumor-reactive CD4+ CD8αβ+ CD103+ αβT cells: a prevalent tumor-reactive T-cell subset in metastatic colorectal cancers. Int J Cancer 2010; 128:2923-32. [PMID: 20824715 DOI: 10.1002/ijc.25640] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 08/12/2010] [Indexed: 01/26/2023]
Abstract
High level of T-cell infiltration in colorectal carcinomas (CRCs) is a good prognostic indicator, but the tumor reactivity of this infiltrate (tumor infiltrating lymphocytes [TIL]) is poorly documented. This study examined the presence, phenotype and functional features of tumor-reactive lymphocytes in human CRC. Freshly dissociated TIL and T cell lines were isolated from CRC samples and from some paired normal colonic mucosa. Four tumor cell lines were obtained. Autologous tumor reactivity of CRC TIL and tumor-reactive cell features were analyzed. We demonstrate the presence among CRC TIL of variable fractions (up to 18%) of double positive CD4(+) CD8αβ(+) (DP) αβ T cells. Interestingly, a high proportion (16-20%) of this TIL subset displayed tumor reactivity, whilst this was the case for no or few single positive TIL. Low levels of DP TIL were found in most CRC samples and in normal colonic mucosa, but these cells were higher in metastatic CRC. Furthermore, we showed that DP TIL were polyclonal, restricted by HLA class-I, proliferated poorly and secreted higher amounts of IL-4 and IL-13 than single positive T cells, on cognate or CD3 stimulation. DP CRC TIL also expressed CD103, confirming their mucosal origin. Increased frequencies of tumor-reactive DP TIL in metastatic CRC suggest that these cells play a role in the metastatic process of this cancer. Based on their high secretion of IL-4 and IL-13 and on previously described roles of these cytokines in cancers, we postulate that DP TIL could favor CRC growth or metastasis and/or downmodulate immune responses to these tumors.
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20
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Abstract
The overexpression and aberrant glycosylation of MUC1 is associated with a wide variety of cancers, making it an ideal target for immunotherapeutic strategies. This review highlights the main avenues of research in this field, focusing on adenocarcinomas, from the preclinical to clinical; the problems and possible solutions associated with each approach; and speculates on the direction of MUC1 immunotherapeutic research over the next 5-10 years.
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Affiliation(s)
- Richard E Beatson
- Breast Cancer Biology Group, King's College London, Guy's Hospital, London SE1 9RT, UK
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21
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Renaud V, Godefroy E, Larrieu P, Fleury F, Jotereau F, Guilloux Y. Folding of matrix metalloproteinase-2 prevents endogenous generation of MHC class-I restricted epitope. PLoS One 2010; 5:e11894. [PMID: 20689590 PMCID: PMC2912773 DOI: 10.1371/journal.pone.0011894] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 07/05/2010] [Indexed: 11/18/2022] Open
Abstract
Background We previously demonstrated that the matrix metalloproteinase-2 (MMP-2) contained an antigenic peptide recognized by a CD8 T cell clone in the HLA-A*0201 context. The presentation of this peptide on class I molecules by human melanoma cells required a cross-presentation mechanism. Surprisingly, the classical endogenous processing pathway did not process this MMP-2 epitope. Methodology/Principal Findings By PCR directed mutagenesis we showed that disruption of a single disulfide bond induced MMP-2 epitope presentation. By Pulse-Chase experiment, we demonstrated that disulfide bonds stabilized MMP-2 and impeded its degradation. Finally, using drugs, we documented that mutated MMP-2 epitope presentation used the proteasome and retrotranslocation complex. Conclusions/Significance These data appear crucial to us since they established the existence of a new inhibitory mechanism for the generation of a T cell epitope. In spite of MMP-2 classified as a self-antigen, the fact that cross-presentation is the only way to present this MMP-2 epitope underlines the importance to target this type of antigen in immunotherapy protocols.
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Affiliation(s)
- Virginie Renaud
- Institut National de la Santé et de la Recherche Médicale, UMR 892, Nantes, France
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22
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Kerzerho J, Adotevi O, Castelli FA, Dosset M, Bernardeau K, Szely N, Lang F, Tartour E, Maillere B. The Angiogenic Growth Factor and Biomarker Midkine Is a Tumor-Shared Antigen. THE JOURNAL OF IMMUNOLOGY 2010; 185:418-23. [DOI: 10.4049/jimmunol.0901014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Hirohashi Y, Torigoe T, Inoda S, Kobayasi JI, Nakatsugawa M, Mori T, Hara I, Sato N. The functioning antigens: beyond just as the immunological targets. Cancer Sci 2009; 100:798-806. [DOI: 10.1111/j.1349-7006.2009.01137.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Giodini A, Rahner C, Cresswell P. Receptor-mediated phagocytosis elicits cross-presentation in nonprofessional antigen-presenting cells. Proc Natl Acad Sci U S A 2009; 106:3324-9. [PMID: 19218463 PMCID: PMC2642664 DOI: 10.1073/pnas.0813305106] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Indexed: 01/03/2023] Open
Abstract
In cross-presentation by dendritic cells (DCs), internalized proteins are retrotranslocated into the cytosol, degraded by the proteasome, and the generated antigenic peptides bind to MHC class I molecules for presentation on the cell surface. Endoplasmic reticulum (ER) contribution to phagosomal membranes is thought to provide antigen access to the ER-associated degradation (ERAD) machinery, allowing cytosolic dislocation. Because the ERAD pathway is present in all cell types and exogenous antigens encounter an ER-containing compartment during phagocytosis, we postulated that forcing phagocytosis in cell types other than DCs would render them competent for cross-presentation. Indeed, FcRgammaIIA expression endowed 293T cells with the capacity for both phagocytosis and ERAD-mediated cross-presentation of an antigen provided as an immune complex. The acquisition of this ability by nonprofessional antigen-presenting cells suggests that a function potentially available in all cell types has been adapted by DCs for presentation of exogenous antigens by MHC class I molecules.
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Affiliation(s)
| | - Christoph Rahner
- Cell Biology, Yale University School of Medicine, 300 Cedar Street, P.O. Box 208011, New Haven, CT 06520-8011
| | - Peter Cresswell
- Howard Hughes Medical Institute
- Departments of Immunobiology and
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25
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Godet Y, Bonnin A, Guilloux Y, Vignard V, Schadendorf D, Dreno B, Jotereau F, Labarriere N. A new tyrosinase epitope recognized in the HLA-B*4002 context by CTL from melanoma patients. Cancer Immunol Immunother 2009; 58:271-80. [PMID: 18612636 PMCID: PMC11031056 DOI: 10.1007/s00262-008-0551-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Accepted: 03/13/2008] [Indexed: 11/29/2022]
Abstract
Melanoma reactive CTL were obtained by stimulating PBL from a melanoma patient in remission since 1994 following adjuvant TIL immunotherapy, with the autologous melanoma cell line. They were cloned by limiting dilution. One CTL clone recognized melanoma cell lines expressing tyrosinase and the B*4002 molecule, either spontaneously or upon transfection. We demonstrated that this clone recognizes the tyrosinase-derived nonapeptide 316-324 (ADVEFCLSL) and the overlapping decapeptide 315-324 (SADVEFCLSL). We derived two distinct additional specific CTL clones from this same patient that were also reactive against B*4002 melanoma cell lines, suggesting a relative diversity of this specific repertoire in this patient. Stimulating PBMC derived from four additional B*4002 melanoma patients with the tyrosinase 316-324 nonapeptide induced the growth of specific cells for two of the patients, demonstrating the immunogenicity of this new epitope. Our data show that this nonapeptide is a new tool that could be used to generate melanoma-specific T cells for adoptive immunotherapy or serve as a peptide vaccine for HLA-B*4002 melanoma patients.
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Affiliation(s)
- Yann Godet
- INSERM U892, 9 quai Moncousu, 44093 Nantes cedex 1, France
| | | | - Yannik Guilloux
- INSERM U892, 9 quai Moncousu, 44093 Nantes cedex 1, France
- Université de Nantes, Faculté des Sciences, 44322 Nantes, France
| | | | - Dirk Schadendorf
- Skin Cancer Unit, German Cancer Research Center and University Hospital Mannheim, 68135 Mannheim, Germany
| | - Brigitte Dreno
- INSERM U892, 9 quai Moncousu, 44093 Nantes cedex 1, France
- CHU of Nantes, Unit of Skin Cancer, 44093 Nantes, France
| | - Francine Jotereau
- INSERM U892, 9 quai Moncousu, 44093 Nantes cedex 1, France
- Université de Nantes, Faculté des Sciences, 44322 Nantes, France
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26
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Godet Y, Moreau-Aubry A, Guilloux Y, Vignard V, Khammari A, Dreno B, Jotereau F, Labarriere N. MELOE-1 is a new antigen overexpressed in melanomas and involved in adoptive T cell transfer efficiency. ACTA ACUST UNITED AC 2008; 205:2673-82. [PMID: 18936238 PMCID: PMC2571940 DOI: 10.1084/jem.20081356] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A cytotoxic T lymphocyte (CTL) clone was derived from a tumor-infiltrating lymphocyte (TIL) population infused to a melanoma patient who remained relapse free for 10 yr after this adoptive transfer. This clone recognized all melanoma cell lines tested and, to a lower extent, melanocytes, in the context of human histocompatibility leukocyte antigen A2 (HLA-A2), but it did not recognize other tumor cell types. The gene coding for the antigen recognized by this clone was identified by the screening of a melanoma complementary DNA expression library. This antigen is overexpressed in melanomas, compared with other cancer cell lines and healthy tissues, and was thus called melanoma-overexpressed antigen (meloe). Remarkably, the structure of meloe was unusual, with multiple short open reading frames (ORFs). The peptide recognized by the CTL clone was encoded by one of these ORFs, called MELOE-1. Using a specific HLA-A2/peptide tetramer, we showed a correlation between the infusion of TILs containing MELOE-1–specific T cells and relapse prevention in HLA-A2 patients. Indeed, 5 out of 9 patients who did not relapse were infused with TILs that contained MELOE-1–specific T cells, whereas 0 out of the 21 patients who relapsed was infused with such TIL-containing lymphocytes. Overall, our results suggest that this new antigen is involved in immunosurveillance and, thus, represents an attractive target for immunotherapy protocols of melanoma.
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Affiliation(s)
- Yann Godet
- Institut National de Santé et de Recherche Médicale, Unité Mixte de Recherche 892, 44093 Nantes, France
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Ichim TE, Zhong Z, Kaushal S, Zheng X, Ren X, Hao X, Joyce JA, Hanley HH, Riordan NH, Koropatnick J, Bogin V, Minev BR, Min WP, Tullis RH. Exosomes as a tumor immune escape mechanism: possible therapeutic implications. J Transl Med 2008; 6:37. [PMID: 18644158 PMCID: PMC2504474 DOI: 10.1186/1479-5876-6-37] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Accepted: 07/22/2008] [Indexed: 01/31/2023] Open
Abstract
Advances in cancer therapy have been substantial in terms of molecular understanding of disease mechanisms, however these advances have not translated into increased survival in the majority of cancer types. One unsolved problem in current cancer therapeutics is the substantial immune suppression seen in patients. Conventionally, investigations in this area have focused on antigen-nonspecific immune suppressive molecules such as cytokines and T cell apoptosis inducing molecules such as Fas ligand. More recently, studies have demonstrated nanovesicle particles termed exosomes are involved not only in stimulation but also inhibition of immunity in physiological conditions. Interestingly, exosomes secreted by cancer cells have been demonstrated to express tumor antigens, as well as immune suppressive molecules such as PD-1L and FasL. Concentrations of exosomes from plasma of cancer patients have been associated with spontaneous T cell apoptosis, which is associated in some situations with shortened survival. In this paper we place the "exosome-immune suppression" concept in perspective of other tumor immune evasion mechanisms. We conclude by discussing a novel therapeutic approach to cancer immune suppression by extracorporeal removal of exosomes using hollow fiber filtration technology
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Neto DS, Pantaleão L, de Sá BCS, Landman G. Alpha-v-beta3 integrin expression in melanocytic nevi and cutaneous melanoma. J Cutan Pathol 2007; 34:851-6. [DOI: 10.1111/j.1600-0560.2007.00730.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Benlalam H, Vignard V, Khammari A, Bonnin A, Godet Y, Pandolfino MC, Jotereau F, Dreno B, Labarrière N. Infusion of Melan-A/Mart-1 specific tumor-infiltrating lymphocytes enhanced relapse-free survival of melanoma patients. Cancer Immunol Immunother 2007; 56:515-26. [PMID: 16874485 PMCID: PMC11030260 DOI: 10.1007/s00262-006-0204-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Accepted: 06/24/2006] [Indexed: 01/25/2023]
Abstract
Adoptive therapy of cancer has been mostly tested in advanced cancer patients using tumor-infiltrating lymphocytes (TIL). Following discouraging results likely due to poor tumor-specificity of TIL and/or high tumor burden, recent studies reiterate the enormous potential of this therapy, particularly in melanoma. We had performed a phase II/III randomised trial on 88 stage III melanoma patients, who received autologous TIL plus IL-2 or IL-2 alone, after complete tumour resection. We reported previously clinical and immunological results supporting the ability of tumor reactive TIL infusion to prevent further development of the melanoma disease and to increase overall survival of patients bearing only one tumor invaded lymph node. The absence of correlation between overall and disease-free survival and the amount of infused tumor-specific TIL suggested that therapeutic efficiency might depend on other parameters such as antigen specificity, function or persistence of TIL. Here we studied the recognition of a panel of 38 shared tumor-associated antigens (TAA) by TIL infused to the patients included in this assay, in order to determine if treatment outcome could correlate with particular antigen specificities of infused TIL. Results show that the infusion of Melan-A/MART-1 reactive TIL appears to be associated with a longer relapse-free survival for HLA-A2 patients. These results further support the relevance of Melan-A/MART-1 antigen as a prime target for immunotherapy protocols in melanoma.
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Affiliation(s)
| | | | - Amir Khammari
- INSERM U601, 9 quai Moncousu, 44093 Nantes Cedex 1, France
- CHU of Nantes, Unit of Skin Cancer, 44093 Nantes, France
| | | | - Yann Godet
- INSERM U601, 9 quai Moncousu, 44093 Nantes Cedex 1, France
| | | | - Francine Jotereau
- INSERM U601, 9 quai Moncousu, 44093 Nantes Cedex 1, France
- Faculté des Sciences, Université de Nantes, 44322 Nantes, France
| | - Brigitte Dreno
- INSERM U601, 9 quai Moncousu, 44093 Nantes Cedex 1, France
- CHU of Nantes, Unit of Skin Cancer, 44093 Nantes, France
- CHU of Nantes, Unit of cell and gene therapy, 44093 Nantes, France
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Proudfoot O, Apostolopoulos V, Pietersz GA. Receptor-Mediated Delivery of Antigens to Dendritic Cells: Anticancer Applications. Mol Pharm 2007; 4:58-72. [PMID: 17228857 DOI: 10.1021/mp0601087] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recently, there has been a surge of interest in the use of ex vivo antigen-pulsed dendritic cells (DCs) in the immunotherapy for cancer. DCs are powerful adjuvants with the ability to prime naive CD4+ and CD8+ T cells. As antigen sources, various preparations, including peptides, proteins, crude tumor lysates, and DCs transfected or transformed with various viruses, have been used. These procedures that involve the isolation of patient DCs and reintroduction after in vitro manipulation are time-consuming and expensive. The DC populations used frequently in ex vivo clinical studies are IL-4 and GM-CSF cultured DCs that may not represent the in vivo DC populations. An attractive method of targeting in vivo DCs is to utilize various ligands or antibodies that bind discrete populations of DCs. These cell surface receptors will direct the antigen to different antigen processing pathways depending on the targeted receptor to induce cytotoxic T cell or T helper responses. This review will discuss the various approaches and receptors that have been used for antigen targeting that may eventually be translated to alternative DC-based immunotherapies.
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Affiliation(s)
- Owen Proudfoot
- Bio-Organic and Medicinal Chemistry Laboratory, Burnet Institute at Austin, Studley Road, Heidelberg, Victoria 3084, Australia
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Viatte S, Alves PM, Romero P. Reverse immunology approach for the identification of CD8 T-cell-defined antigens: advantages and hurdles. Immunol Cell Biol 2006; 84:318-30. [PMID: 16681829 DOI: 10.1111/j.1440-1711.2006.01447.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
One of the challenges of tumour immunology remains the identification of strongly immunogenic tumour antigens for vaccination. Reverse immunology, that is, the procedure to predict and identify immunogenic peptides from the sequence of a gene product of interest, has been postulated to be a particularly efficient, high-throughput approach for tumour antigen discovery. Over one decade after this concept was born, we discuss the reverse immunology approach in terms of costs and efficacy: data mining with bioinformatic algorithms, molecular methods to identify tumour-specific transcripts, prediction and determination of proteasomal cleavage sites, peptide-binding prediction to HLA molecules and experimental validation, assessment of the in vitro and in vivo immunogenic potential of selected peptide antigens, isolation of specific cytolytic T lymphocyte clones and final validation in functional assays of tumour cell recognition. We conclude that the overall low sensitivity and yield of every prediction step often requires a compensatory up-scaling of the initial number of candidate sequences to be screened, rendering reverse immunology an unexpectedly complex approach.
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Affiliation(s)
- Sebastien Viatte
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne branch, University Hospital, CHUV, and National Center for Competence in Research, NCCR, Molecular Oncology, Lausanne, Switzerland
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Samanna V, Wei H, Ego-Osuala D, Chellaiah MA. Alpha-V-dependent outside-in signaling is required for the regulation of CD44 surface expression, MMP-2 secretion, and cell migration by osteopontin in human melanoma cells. Exp Cell Res 2006; 312:2214-30. [PMID: 16631740 DOI: 10.1016/j.yexcr.2006.03.022] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2005] [Revised: 03/19/2006] [Accepted: 03/20/2006] [Indexed: 11/18/2022]
Abstract
The level of integrin alpha(v)beta3 and its ligand osteopontin (OPN) has been directly correlated to tumorigenicity of melanoma and other cancer cells. We have previously shown an increase in pp(60c-Src) kinase activity associated with integrin alpha(v)beta3 in melanoma cells (M21) treated with soluble OPN. pp(60c-Src) kinase activity was not observed in melanoma cells expressing alpha(v) that lacks the cytoplasmic domain (alpha(v)995). Results of the current study demonstrate that the amino acid sequence '995RPPQEEQERE1004' in the beta-turn of alpha(v) chain is required for the interaction of pp(60c-Src). Our results suggest that the beta-turn of alpha(v) chain may be indispensable for alpha(v)-associated signaling complex formation and outside-in signaling. To further analyze the alpha(v)beta3 signaling in melanoma cells, we over expressed OPN in M21 cells (M21/OPN). CD44 surface expression and MMP-2 activity in the conditioned medium were increased to a greater extent in M21/OPN cells as compared with M21 or alpha(v)995 cells. Also, M21/OPN cells exhibit increased motility, which is markedly reduced upon treatment with inhibitors to alpha(v) and MMP-2. Our findings suggest that the increase in MMP-2 activity is integrin-dependent as MMP-2 activity is reduced in cells treated with an inhibitor to alpha(v) or in alpha(v)995 cells expressing mutant alpha(v).
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Affiliation(s)
- V Samanna
- Department of Biomedical Sciences, Dental School, University of Maryland, 666 W Baltimore Street, Baltimore, MD 21201, USA
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Zhong Z, Kusznieruk KP, Popov IA, Riordan NH, Izadi H, Yijian L, Sher S, Szczurko OM, Agadjanyan MG, Tullis RH, Harandi A, Reznik BN, Mamikonyan GV, Ichim TE. Induction of antitumor immunity through xenoplacental immunization. J Transl Med 2006; 4:22. [PMID: 16725035 PMCID: PMC1482718 DOI: 10.1186/1479-5876-4-22] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2006] [Accepted: 05/25/2006] [Indexed: 11/10/2022] Open
Abstract
Historically cancer vaccines have yielded suboptimal clinical results. We have developed a novel strategy for eliciting antitumor immunity based upon homology between neoplastic tissue and the developing placenta. Placenta formation shares several key processes with neoplasia, namely: angiogenesis, activation of matrix metalloproteases, and active suppression of immune function. Immune responses against xenoantigens are well known to break self-tolerance. Utilizing xenogeneic placental protein extracts as a vaccine, we have successfully induced anti-tumor immunity against B16 melanoma in C57/BL6 mice, whereas control xenogeneic extracts and B16 tumor extracts where ineffective, or actually promoted tumor growth, respectively. Furthermore, dendritic cells were able to prime tumor immunity when pulsed with the placental xenoantigens. While vaccination-induced tumor regression was abolished in mice depleted of CD4 T cells, both CD4 and CD8 cells were needed to adoptively transfer immunity to naïve mice. Supporting the role of CD8 cells in controlling tumor growth are findings that only freshly isolated CD8 cells from immunized mice were capable of inducing tumor cell caspases-3 activation ex vivo. These data suggest feasibility of using xenogeneic placental preparations as a multivalent vaccine potently targeting not just tumor antigens, but processes that are essential for tumor maintenance of malignant potential.
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Affiliation(s)
- Zhaohui Zhong
- The Second Xiangya Hospital of Central South University, Changsha, China
| | | | - Igor A Popov
- Department of Surgery, University of Western Ontario, London, Canada
| | | | - Hamid Izadi
- MedVax Pharma Corp, Toronto, Canada/San Diego, USA
| | - Li Yijian
- The Second Xiangya Hospital of Central South University, Changsha, China
| | - Salman Sher
- Division of Cardiology, Emory University, Atlanta, USA
| | | | | | | | - Amir Harandi
- Department of Medicine, Columbia University, New York, USA
| | | | | | - Thomas E Ichim
- MedVax Pharma Corp, Toronto, Canada/San Diego, USA
- OncoMune LLC, Los Angeles, California, USA
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van der Bruggen P, Van den Eynde BJ. Processing and presentation of tumor antigens and vaccination strategies. Curr Opin Immunol 2005; 18:98-104. [PMID: 16343880 DOI: 10.1016/j.coi.2005.11.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Accepted: 11/25/2005] [Indexed: 10/25/2022]
Abstract
Various new aspects of antigen processing have been uncovered through the study of tumor antigens. One of these is the production of antigenic peptides by splicing of two distinct peptide fragments. In one of the two cases reported, the proteasome was found to be responsible for splicing. The presentation of another peptide on major histocompatibility complex class I molecules was found to depend on secretion and reuptake of the parent protein, implying a cross-presentation pathway in melanoma cells. Class II presentation of peptides derived from cytosolic proteins now appears to result from autophagy. Based on increased knowledge on antigen processing and presentation, new vaccination strategies are aimed at improving the targeting of antigens to dendritic cells, promoting cross-priming (for example, using chloroquine), improving peptide binding to class I molecules and targeting antigens to both the class I and the class II pathways.
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Affiliation(s)
- Pierre van der Bruggen
- Ludwig Institute for Cancer Research and Cellular Genetics Unit, Institute of Cellular Pathology, Université catholique de Louvain, 74 avenue Hippocrate, UCL 7459, B-1200 Brussels, Belgium
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