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Stefanidis E, Semilietof A, Pujol J, Seijo B, Scholten K, Zoete V, Michielin O, Sandaltzopoulos R, Coukos G, Irving M. Combining SiRPα decoy-coengineered T cells and antibodies augments macrophage-mediated phagocytosis of tumor cells. J Clin Invest 2024; 134:e161660. [PMID: 38828721 PMCID: PMC11142748 DOI: 10.1172/jci161660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 04/16/2024] [Indexed: 06/05/2024] Open
Abstract
The adoptive transfer of T cell receptor-engineered (TCR-engineered) T cells (ACT) targeting the HLA-A2-restricted cancer-testis epitope NY-ESO-1157-165 (A2/NY) has yielded favorable clinical responses against several cancers. Two approaches to improve ACT are TCR affinity optimization and T cell coengineering to express immunomodulatory molecules that can exploit endogenous immunity. By computational design we previously developed a panel of binding-enhanced A2/NY-TCRs including A97L, which augmented the in vitro function of gene-modified T cells as compared with WT. Here, we demonstrated higher persistence and improved tumor control by A97L-T cells. In order to harness macrophages in tumors, we further coengineered A97L-T cells to secrete a high-affinity signal regulatory protein α (SiRPα) decoy (CV1) that blocks CD47. While CV1-Fc-coengineered A97L-T cells mediated significantly better control of tumor outgrowth and survival in Winn assays, in subcutaneous xenograft models the T cells, coated by CV1-Fc, were depleted. Importantly, there was no phagocytosis of CV1 monomer-coengineered T cells by human macrophages. Moreover, avelumab and cetuximab enhanced macrophage-mediated phagocytosis of tumor cells in vitro in the presence of CV1 and improved tumor control upon coadministration with A97L-T cells. Taken together, our study indicates important clinical promise for harnessing macrophages by combining CV1-coengineered TCR-T cells with targeted antibodies to direct phagocytosis against tumor cells.
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MESH Headings
- Animals
- Humans
- Mice
- Antigens, Differentiation/immunology
- Antigens, Neoplasm/immunology
- CD47 Antigen/immunology
- Cell Line, Tumor
- HLA-A2 Antigen/immunology
- HLA-A2 Antigen/genetics
- Immunotherapy, Adoptive
- Macrophages/immunology
- Macrophages/metabolism
- Phagocytosis
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Immunologic/immunology
- Receptors, Immunologic/metabolism
- Receptors, Immunologic/genetics
- T-Lymphocytes/immunology
- Xenograft Model Antitumor Assays
- Male
- Female
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Affiliation(s)
- Evangelos Stefanidis
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Aikaterini Semilietof
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Julien Pujol
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Bili Seijo
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Kirsten Scholten
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Vincent Zoete
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Olivier Michielin
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- Precision Oncology, University Hospital of Geneva (HUG), Geneva, Switzerland
| | - Raphael Sandaltzopoulos
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - George Coukos
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Melita Irving
- Ludwig Institute for Cancer Research, Department of Oncology, University of Lausanne (UNIL) and University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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Palermo B, Del Bello D, Sottini A, Serana F, Ghidini C, Gualtieri N, Ferraresi V, Catricalà C, Belardelli F, Proietti E, Natali PG, Imberti L, Nisticò P. Dacarbazine Treatment before Peptide Vaccination Enlarges T-Cell Repertoire Diversity of Melan-A–Specific, Tumor-Reactive CTL in Melanoma Patients. Cancer Res 2010; 70:7084-92. [DOI: 10.1158/0008-5472.can-10-1326] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Lévy F, Colombetti S. Promises and Limitations of Murine Models in the Development of Anticancer T-Cell Vaccines. Int Rev Immunol 2009; 25:269-95. [PMID: 17169777 DOI: 10.1080/08830180600992407] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Murine models have been instrumental in defining the basic mechanisms of antitumor immunity. Most of these mechanisms have since been shown to operate in humans as well. Based on these similarities, active vaccination strategies aimed at eliciting antitumor T-cell responses have been elaborated and successfully implemented in various mouse models. However, the results of human antitumor vaccination trials have been rather disappointing thus far. This review summarizes the different experimental approaches used in mice to induce antitumor T-cell responses and identifies some critical parameters that should be considered when evaluating results from murine models.
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Affiliation(s)
- Frédéric Lévy
- Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Epalinges, Switzerland.
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Beck A, Klinguer-Hamour C, Bussat MC, Champion T, Haeuw JF, Goetsch L, Wurch T, Sugawara M, Milon A, Van Dorsselaer A, Nguyen T, Corvaïa N. Peptides as tools and drugs for immunotherapies. J Pept Sci 2007; 13:588-602. [PMID: 17602441 DOI: 10.1002/psc.852] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Peptides are essential tools for discovery and pre-clinical and pharmaceutical development of viral and cancer vaccines ('active immunotherapies') as well as for therapeutic antibodies ('passive immunotherapies'). They help to trigger and analyze immune responses at a molecular level (B-cell, T-helper and CTL epitopes). They contribute largely to the design of new vaccine candidates and to the generation of monoclonal antibodies. They are also valuable analytical reference compounds for the structural characterisation by liquid chromatography and mass spectrometry of recombinant proteins used as biopharmaceuticals. As for other therapeutic applications, formulation, solubilisation, batch consistency and stability, issues have to be addressed to allow the pre-clinical and clinical development of this class of compounds as immunotherapeutic drugs. In the present review, three case studies dealing with (i) the design and the characterisation of Respiratory Syntycial Virus subunit vaccines, (ii) peptide-based melanoma vaccines, and (iii) therapeutic monoclonal antibodies, all investigated in clinical trials, are reported and discussed.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/therapeutic use
- Antigens, Viral/chemistry
- Antigens, Viral/genetics
- Cancer Vaccines/genetics
- Cancer Vaccines/immunology
- Epitopes, B-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/genetics
- Humans
- Immunotherapy/methods
- Mice
- Models, Immunological
- Models, Molecular
- Molecular Sequence Data
- Peptide Mapping
- Peptides/immunology
- Peptides/therapeutic use
- Respiratory Syncytial Virus Vaccines/genetics
- Respiratory Syncytial Virus Vaccines/immunology
- Respiratory Syncytial Virus, Human/genetics
- Respiratory Syncytial Virus, Human/immunology
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Affiliation(s)
- Alain Beck
- Centre d'Immunologie Pierre Fabre, 5 Avenue Napoléon III, F74164 Saint-Julien-en-Genevois, Cedex, France.
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Shen C, Zhang J, Xia L, Meng F, Xie W. Induction of tumor antigen-specific cytotoxic T cell responses in naïve mice by latex microspheres-based artificial antigen-presenting cell constructs. Cell Immunol 2007; 247:28-35. [PMID: 17720150 DOI: 10.1016/j.cellimm.2007.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2007] [Revised: 07/01/2007] [Accepted: 07/04/2007] [Indexed: 11/26/2022]
Abstract
Latex microspheres-based artificial antigen-presenting cell constructs (aAPCs) are proved to be valuable tools to expand T cells ex vivo for adoptive cell therapy, but little is known about their potential for active immunization. In this report, HLA-A2/peptide tetramers were generated and co-coated with anti-mouse CD28 monoclonal antibody onto surface of cell-sized latex microspheres followed by immunization of naïve HLA-A2/K(b) transgenic mice. Five- to six-fold expansion of tumor antigen-specific CTLs was observed in the spleen after three rounds of immunization. The consequent splenocytes can efficiently recognize endogenously expressed tumor antigen on the surface of human target cells and cytolyze the tumor cells in an antigen-specific manner. This report provides initially the experimental evidence that latex microspheres-based aAPCs can effectively prime antigen-specific CTL proliferation and cytolysis in naïve mice. This may contribute to a better insight into the potential of microspheres-based aAPCs for active immunization.
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Affiliation(s)
- Chuanlai Shen
- The Key Laboratory of Developmental Genes and Human Disease of Education Ministry, Genetics Research Center, Southeast University Medical School, 87 Dingjiaqiao Road, Nanjing, Jiangsu 210009, PR China
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