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Fu X, Liu S, Cao D, Li C, Ji H, Wang G. Med23 deficiency reprograms the tumor microenvironment to promote lung tumorigenesis. Br J Cancer 2024; 130:716-727. [PMID: 38195889 PMCID: PMC10912217 DOI: 10.1038/s41416-023-02556-9] [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: 07/04/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Lung cancer is the leading cause of cancer-related death worldwide. We previously found that Mediator complex subunit 23 (MED23) is important for the tumourigenicity of lung cancer cells with hyperactive Ras activity in vitro, although the in vivo function of MED23 in lung tumourigenesis remains to be explored. METHODS In this study, we utilized well-characterized KrasG12D-driven non-small cell lung cancer mouse model to investigate the role of MED23 in lung cancer. The lung tumour progression was evaluated by H&E and IHC analysis. Western blotting and qRT-PCR assays were performed to detect changes in gene expression. Immune cells were analyzed by FACS technology. RNA-seq and reporter assays were conducted to explore the mechanism. RESULTS We observed that lung epithelial Med23 deletion by adeno-Cre resulted in a significant increase in KrasG12D tumour number and size, which was further verified with another mouse model with Med23 specifically deleted in alveolar type II cells. Mice with lung-specific Med23 deficiency also exhibited accelerated tumourigenesis, and a higher proliferation rate for tumour cells, along with increased ERK phosphorylation. Notably, the numbers of infiltrating CD4+ T cells and CD8+ T cells were significantly reduced in the lungs of Med23-deficient mice, while the numbers of myeloid-derived suppressor cells (MDSCs) and Treg cells were significantly increased, suggesting the enhanced immune escape capability of the Med23-deficient lung tumours. Transcriptomic analysis revealed that the downregulated genes in Med23-deficient lung tumour tissues were associated with the immune response. Specifically, Med23 deficiency may compromise the MHC-I complex formation, partially through down-regulating B2m expression. CONCLUSIONS Collectively, these findings revealed that MED23 may negatively regulate Kras-induced lung tumourigenesis in vivo, which would improve the precise classification of KRAS-mutant lung cancer patients and provide new insights for clinical interventions.
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Affiliation(s)
- Xiaobo Fu
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai, 200438, China
| | - Siming Liu
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dan Cao
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Chonghui Li
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Hongbin Ji
- State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Gang Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences and Zhongshan Hospital, Fudan University, Shanghai, 200438, China.
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2
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Du Y, Pollok KE, Shen J. Unlocking Glioblastoma Secrets: Natural Killer Cell Therapy against Cancer Stem Cells. Cancers (Basel) 2023; 15:5836. [PMID: 38136381 PMCID: PMC10741423 DOI: 10.3390/cancers15245836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/27/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Glioblastoma (GBM) represents a paramount challenge as the most formidable primary brain tumor characterized by its rapid growth, aggressive invasiveness, and remarkable heterogeneity, collectively impeding effective therapeutic interventions. The cancer stem cells within GBM, GBM stem cells (GSCs), hold pivotal significance in fueling tumor advancement, therapeutic refractoriness, and relapse. Given their unique attributes encompassing self-renewal, multipotent differentiation potential, and intricate interplay with the tumor microenvironment, targeting GSCs emerges as a critical strategy for innovative GBM treatments. Natural killer (NK) cells, innate immune effectors recognized for their capacity to selectively detect and eliminate malignancies without the need for prior sensitization, offer substantial therapeutic potential. Harnessing the inherent capabilities of NK cells can not only directly engage tumor cells but also augment broader immune responses. Encouraging outcomes from clinical investigations underscore NK cells as a potentially effective modality for cancer therapy. Consequently, NK cell-based approaches hold promise for effectively targeting GSCs, thereby presenting an avenue to enhance treatment outcomes for GBM patients. This review outlines GBM's intricate landscape, therapeutic challenges, GSC-related dynamics, and elucidates the potential of NK cell as an immunotherapeutic strategy directed towards GSCs.
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Affiliation(s)
- Yuanning Du
- Medical Sciences Program, Indiana University School of Medicine, Bloomington, IN 47405, USA;
| | - Karen E. Pollok
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
- Department of Pediatrics, Hematology/Oncology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN 46202, USA
| | - Jia Shen
- Medical Sciences Program, Indiana University School of Medicine, Bloomington, IN 47405, USA;
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA;
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN 46202, USA
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3
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Miller AR. Checkpoint inhibitors are a basic science-based, transformative new treatment for lung cancer. Respirology 2023; 28:101-106. [PMID: 36535890 PMCID: PMC10107528 DOI: 10.1111/resp.14437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/04/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Alistair R Miller
- Department of Respiratory and Sleep Medicine, Royal Melbourne Hospital, Parkville, Victoria, Australia.,Department of Internal Medicine, Peter MacCallum Cancer Centre, Parkville, Victoria, Australia.,Department of Medicine (RMH), Faculty of Medicine Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria, Australia
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4
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Mehranzadeh E, Crende O, Badiola I, Garcia-Gallastegi P. What Are the Roles of Proprotein Convertases in the Immune Escape of Tumors? Biomedicines 2022; 10:biomedicines10123292. [PMID: 36552048 PMCID: PMC9776400 DOI: 10.3390/biomedicines10123292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/28/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Protein convertases (PCs) play a significant role in post-translational procedures by transforming inactive precursor proteins into their active forms. The role of PCs is crucial for cellular homeostasis because they are involved in cell signaling. They have also been described in many diseases such as Alzheimer's and cancer. Cancer cells are secretory cells that send signals to the tumor microenvironment (TME), remodeling the surrounding space for their own benefits. One of the most important components of the TME is the immune system of the tumor. In this review, we describe recent discoveries that link PCs to the immune escape of tumors. Among PCs, many findings have determined the role of Furin (PC3) as a paramount enzyme causing the TME to induce tumor immune evasion. The overexpression of various cytokines and proteins, for instance, IL10 and TGF-B, moves the TME towards the presence of Tregs and, consequently, immune tolerance. Furthermore, Furin is implicated in the regulation of macrophage activity that contributes to the increased impairment of DCs (dendritic cells) and T effector cells. Moreover, Furin interferes in the MHC Class_1 proteolytic cleavage in the trans-Golgi network. In tumors, the T cytotoxic lymphocytes (CTLs) response is impeded by the PD1 receptor (PD1-R) located on CTLs and its ligand, PDL1, located on cancer cells. The inhibition of Furin is a subtle means of enhancing the antitumor response by repressing PD-1 expression in tumors or macrophage cells. The impacts of other PCs in tumor immune escape have not yet been clarified to the extent that Furin has. Accordingly, the influence of other types of PCs in tumor immune escape is a promising topic for further consideration.
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Affiliation(s)
- Elham Mehranzadeh
- Cell Biology and Histology Department, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Barrio Sarriena, sn., 48940 Leioa, Spain
| | - Olatz Crende
- Cell Biology and Histology Department, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Barrio Sarriena, sn., 48940 Leioa, Spain
| | - Iker Badiola
- Cell Biology and Histology Department, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Barrio Sarriena, sn., 48940 Leioa, Spain
- Nanokide Therapeutics SL, Ed. ZITEK, Barrio Sarriena, sn., 48940 Leioa, Spain
| | - Patricia Garcia-Gallastegi
- Physiology Department, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), Barrio Sarriena, sn., 48940 Leioa, Spain
- Correspondence:
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5
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Identification and Validation of Immune Cells and Hub Genes in Gastric Cancer Microenvironment. DISEASE MARKERS 2022; 2022:8639323. [PMID: 35422890 PMCID: PMC9005323 DOI: 10.1155/2022/8639323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/24/2022] [Indexed: 12/30/2022]
Abstract
Gastric cancer (GC) is the most common malignant tumor in the digestive system, traditional radiotherapy and chemotherapy are not effective for some patients. The research progress of immunotherapy seems to provide a new way for treatment. However, it is still urgent to predict immunotherapy biomarkers and determine novel therapeutic targets. In this study, the gene expression profiles and clinical data of 407 stomach adenocarcinoma (STAD) patients were downloaded from The Cancer Genome Atlas (TCGA) portal, and the abundance ratio of immune cells in each sample was obtained via the “Cell Type Identification by Estimating Relative Subsets of RNA Transcripts (CIBERSORT)” algorithm. Five immune cells were obtained as a result of abundance comparison, and 295 immune-related genes were obtained through differential gene analysis. Enrichment, protein interaction, and module analysis were performed on these genes. We identified five immune cells associated with infiltration and 20 hub genes, of which five genes were correlated with overall survival. Finally, we used Real-time PCR (RT-PCR) to detect the expression differences of the five hub genes in 18 pairs of GC and adjacent tissues. This research not only provides cellular and gene targets for immunotherapy of GC but also provides new ideas for researchers to explore immunotherapy for various tumors.
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6
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Correia MP, Stojanovic A, Wels WS, Cerwenka A. Innate-like NKp30 +CD8 + T cells armed with TCR/CAR target tumor heterogeneity. Oncoimmunology 2022; 10:1973783. [PMID: 35036073 PMCID: PMC8758178 DOI: 10.1080/2162402x.2021.1973783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Intratumoral heterogeneity is frequently associated with tumor immune escape, with MHC-class I and antigen expression loss rendering tumor cells invisible to T cell killing, representing a major challenge for the design of successful adoptive transfer protocols for cancer immunotherapy. While CD8+ T cell recognition of tumor cells is based on the detection of MHC-peptide complexes via specific T cell receptors (TCRs), Natural Killer (NK) cells detect tumor-associated NK ligands by an array of NK receptors. We have recently identified a population of innate-like CD8+ T cells marked by the expression of NKp30, a potent natural cytotoxicity activating NK receptor, whose tumor ligand, B7H6, is frequently upregulated on several cancer types. Here, we harnessed the dual-recognition potential of NKp30+CD8+ T cells, by arming these cells with TCRs or chimeric antigen receptors (CARs) targeting Epidermal Growth Factor Receptor 2 (ErbB2, or HER2), a tumor-associated target overexpressed in several malignancies. HER2-specific NKp30+CD8+ T cells killed not only HER2-expressing target cell lines, but also eliminated tumor cells in the absence of MHC-class I or antigen expression, making them especially effective in eliminating heterogeneous tumor cell populations. Our results show that NKp30+CD8+ T cells equipped with a specific TCR or CAR display a dual capacity to recognize and kill target cells, combining the anti-tumor activity of both CD8+ T and NK cells. This dual-recognition capacity allows these effector cells to target tumor heterogeneity, thus improving therapeutic strategies against tumor escape.
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Affiliation(s)
- Margareta P Correia
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunosciences (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,Cancer Biology and Epigenetics Group, Research Center of IPO Porto (CI-IPOP)/RISE@CI-IPOP (Health Research Network), Portuguese Oncology Institute of Porto (IPO Porto)/Porto Comprehensive Cancer Center (Porto.CCC), Porto, Portugal.,Department of Pathology and Molecular Immunology, School of Medicine & Biomedical Sciences, University of Porto (ICBAS-UP), Porto, Portugal
| | - Ana Stojanovic
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunosciences (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Winfried S Wels
- Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, Frankfurt, Germany.,Frankfurt Cancer Institute, Goethe University, Frankfurt, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt, Germany
| | - Adelheid Cerwenka
- Department of Immunobiochemistry, Mannheim Institute for Innate Immunosciences (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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7
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Kim EE, Youn H, Kang KW. Imaging in Tumor Immunology. Nucl Med Mol Imaging 2021; 55:225-236. [PMID: 34721715 PMCID: PMC8517056 DOI: 10.1007/s13139-021-00706-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/31/2021] [Accepted: 06/15/2021] [Indexed: 10/20/2022] Open
Abstract
Recent advances in immune modulation have made impressive progress in cancer immunotherapy. Because dynamic nature of the immune response often makes it difficult to evaluate therapeutic outcomes, innovative imaging technologies have been developed to enable non-invasive visualization of immune cells and tumors in their microenvironment. This review summarizes the current tumor immunology and describes new innovative imaging methods with great potential to obtain non-invasive real-time insights into the complex functions of the immune system and into the management of cancer immunotherapy.
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Affiliation(s)
- Euishin Edmund Kim
- Department of Radiological Sciences, UCI Medical Center, Orange County, CA USA
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, South Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Seoul, South Korea
| | - Hyewon Youn
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, South Korea
- Laboratory of Molecular Imaging and Therapy, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | - Keon Wook Kang
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, South Korea
- Laboratory of Molecular Imaging and Therapy, Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
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8
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Da Gama Duarte J, Woods K, Quigley LT, Deceneux C, Tutuka C, Witkowski T, Ostrouska S, Hudson C, Tsao SCH, Pasam A, Dobrovic A, Blackburn JM, Cebon J, Behren A. Ropporin-1 and 1B Are Widely Expressed in Human Melanoma and Evoke Strong Humoral Immune Responses. Cancers (Basel) 2021; 13:1805. [PMID: 33918976 PMCID: PMC8069442 DOI: 10.3390/cancers13081805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 11/17/2022] Open
Abstract
Antibodies that block immune regulatory checkpoints (programmed cell death 1, PD-1 and cytotoxic T-lymphocyte-associated antigen 4, CTLA-4) to mobilise immunity have shown unprecedented clinical efficacy against cancer, demonstrating the importance of antigen-specific tumour recognition. Despite this, many patients still fail to benefit from these treatments and additional approaches are being sought. These include mechanisms that boost antigen-specific immunity either by vaccination or adoptive transfer of effector cells. Other than neoantigens, epigenetically regulated and shared antigens such as NY-ESO-1 are attractive targets; however, tissue expression is often heterogeneous and weak. Therefore, peptide-specific therapies combining multiple antigens rationally selected to give additive anti-cancer benefits are necessary to achieve optimal outcomes. Here, we show that Ropporin-1 (ROPN1) and 1B (ROPN1B), cancer restricted antigens, are highly expressed and immunogenic, inducing humoral immunity in patients with advanced metastatic melanoma. By multispectral immunohistochemistry, 88.5% of melanoma patients tested (n = 54/61) showed ROPN1B expression in at least 1 of 2/3 tumour cores in tissue microarrays. Antibody responses against ROPN1A and ROPN1B were detected in 71.2% of melanoma patients tested (n = 74/104), with increased reactivity seen with more advanced disease stages. Thus, ROPN1A and ROPN1B may indeed be viable targets for cancer immunotherapy, alone or in combination with other cancer antigens, and could be combined with additional therapies such as immune checkpoint blockade.
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Affiliation(s)
- Jessica Da Gama Duarte
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Katherine Woods
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Luke T. Quigley
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Cyril Deceneux
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Candani Tutuka
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Tom Witkowski
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Simone Ostrouska
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Chris Hudson
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Simon Chang-Hao Tsao
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Anupama Pasam
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Alexander Dobrovic
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Department of Clinical Pathology, Melbourne Medical School, University of Melbourne, Parkville, VIC 3010, Australia
| | - Jonathan M. Blackburn
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa;
- Institute for Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town 7925, South Africa
| | - Jonathan Cebon
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Medical Oncology Unit, Austin Health, Heidelberg, VIC 3084, Australia
| | - Andreas Behren
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia; (J.D.G.D.); (K.W.); (L.T.Q.); (C.D.); (C.T.); (T.W.); (S.O.); (C.H.); (S.C.-H.T.); (A.P.); (A.D.); (J.C.)
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Department of Medicine—Austin, Melbourne Medical School, University of Melbourne, Parkville, VIC 3010, Australia
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9
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Ahmed R, Sayegh N, Graciotti M, Kandalaft LE. Electroporation as a method of choice to generate genetically modified dendritic cell cancer vaccines. Curr Opin Biotechnol 2020; 65:142-155. [PMID: 32240923 DOI: 10.1016/j.copbio.2020.02.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/10/2019] [Accepted: 02/17/2020] [Indexed: 12/31/2022]
Abstract
In the last few decades, immunotherapy has emerged as an alternative therapeutic approach to treat cancer. Immunotherapy offers a plethora of different treatment possibilities. Among these, dendritic cell (DC)-based cancer vaccines constitute one of the most promising and valuable therapeutic options. DC-vaccines have been introduced into the clinics more than 15 years ago, and preclinical studies showed their general safety and low toxic effects on patients. However, their treatment efficacy is still rather limited, demanding for novel avenues to improve vaccine efficacy. One way to potentially achieve this is to focus on improving the DC-T cell interaction to further increase T cell priming and downstream activity. A successful DC-T cell interaction requires three different signals (Figure 1): (1) Major Histocompatibility Complex (MHC) and antigen complex interaction with T cell receptor (TCR) (2) interaction between co-stimulatory molecules and their cognate ligands at the cell surface and (3) secretion of cytokines to polarize the immune response toward a Type 1 helper (Th1) phenotype. In recent years, many studies attempted to improve the DC-T cell interaction and overall cancer vaccine therapeutic outcomes by increasing the expression of mediators of signal 1, 2 and/or 3, through genetic modifications of DCs. Transfection of genes of interest can be achieved through many different methods such as passive pulsing, lipofection, viral transfection, or electroporation (EP). However, EP is currently emerging as the method of choice thanks to its safety, versatility, and relatively easy clinical translation. In this review we will highlight the potential benefits of EP over other transfection methods as well as giving an overview of the available studies employing EP to gene-modify DCs in cancer vaccines. Crucial aspects such as safety, feasibility, and gene(s) of choice will be also discussed, together with future perspectives and opportunities for DC genetic engineering.
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Affiliation(s)
- Rita Ahmed
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne, Lausanne 1011, Switzerland
| | - Naya Sayegh
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne, Lausanne 1011, Switzerland
| | - Michele Graciotti
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne, Lausanne 1011, Switzerland
| | - Lana E Kandalaft
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne, Lausanne 1011, Switzerland.
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10
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Wedekind MF, Cripe TP. Oncolytic Viruses and Their Potential as a Therapeutic Opportunity in Osteosarcoma. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1258:77-89. [PMID: 32767235 DOI: 10.1007/978-3-030-43085-6_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Osteosarcoma remains an unmet medical need. Oncolytic viruses are gaining traction as novel cancer therapeutics. These viruses are either naturally nonpathogenic or engineered to be safe by specific genetic deletions yet retain the ability to infect and kill human cancer cells and elicit anticancer immunity. Some versions are being specifically designed and tested in patients with osteosarcoma, though due to their generalized mechanism of action most are being tested in patients across a broad range of cancer types. The activity of these viruses is impacted not only by the susceptibility of tumor cells to infection but also by the tumor microenvironment (TME) and by tumor immunogenicity. Here we review the field of oncolytic viruses with a particular emphasis on highlighting any available data in preclinical osteosarcoma models or in patients with osteosarcoma. While in general the viruses have been shown safe to administer to patients by a variety of routes, their therapeutic efficacy to date has been limited. Given the low rate of adverse events and the likely absence of long-term side effects, the utility of oncolytic viruses will most likely be realized when used in combination with other agents.
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Affiliation(s)
| | - Timothy P Cripe
- Nationwide Children's Hospital, The Ohio State University, Columbus, OH, USA.
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11
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Brombacher EC, Everts B. Shaping of Dendritic Cell Function by the Metabolic Micro-Environment. Front Endocrinol (Lausanne) 2020; 11:555. [PMID: 33013685 PMCID: PMC7493661 DOI: 10.3389/fendo.2020.00555] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 07/07/2020] [Indexed: 12/13/2022] Open
Abstract
Nutrients are required for growth and survival of all cells, but are also crucially involved in cell fate determination of many cell types, including immune cells. There is a growing appreciation that the metabolic micro-environment also plays a major role in shaping the functional properties of dendritic cells (DCs). Under pathological conditions nutrient availability can range from a very restricted supply, such as seen in a tumor micro-environment, to an overabundance of nutrients found in for example obese adipose tissue. In this review we will discuss what is currently known about the metabolic requirements for DC differentiation and immunogenicity and compare that to how function and fate of DCs under pathological conditions can be affected by alterations in environmental levels of carbohydrates, lipids and amino acids as well as by other metabolic cues, including availability of oxygen, redox homeostasis and lactate levels. Many of these insights have been generated using in vitro model systems, which have revealed highly diverse effects of different metabolic cues on DC function. However, they also stress the importance of shifting toward more physiologically relevant experimental settings to be able to fully delineate the role of the metabolic surroundings in its full complexity in shaping the functional properties of DCs in health and disease.
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12
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Ansari RE, Craze ML, Althobiti M, Alfarsi L, Ellis IO, Rakha EA, Green AR. Enhanced glutamine uptake influences composition of immune cell infiltrates in breast cancer. Br J Cancer 2019; 122:94-101. [PMID: 31819174 PMCID: PMC6964696 DOI: 10.1038/s41416-019-0626-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/08/2019] [Accepted: 10/21/2019] [Indexed: 02/06/2023] Open
Abstract
Background Cancer cells must alter their metabolism to support proliferation. Immune evasion also plays a role in supporting tumour progression. This study aimed to find whether enhanced glutamine uptake in breast cancer (BC) can derive the existence of specific immune cell subtypes, including the subsequent impact on patient outcome. Methods SLC1A5, SLC7A5, SLC3A2 and immune cell markers CD3, CD8, FOXP3, CD20 and CD68, in addition to PD1 and PDL1, were assessed by using immunohistochemistry on TMAs constructed from a large BC cohort (n = 803). Patients were stratified based on SLC protein expression into accredited clusters and correlated with immune cell infiltrates and patient outcome. The effect of transient siRNA knockdown of SLC7A5 and SLC1A5 on PDL1 expression was evaluated in MDA-MB-231 cells. Results High SLCs were significantly associated with PDL1 and PD1 +, FOXP3 +, CD68 + and CD20 + cells (p < 0.001). Triple negative (TN), HER2 + and luminal B tumours showed variable associations between SLCs and immune cell types (p ≤ 0.04). The expression of SLCs and PDL1, PD1 +, FOXP3 + and CD68 + cells was associated with poor patient outcome (p < 0.001). Knockdown of SLC7A5 significantly reduced PDL1 expression. Conclusion This study provides data that altered glutamine pathways in BC that appears to play a role in deriving specific subtypes of immune cell infiltrates, which either support or counteract its progression.
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Affiliation(s)
- Rokaya El Ansari
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK.,Department of Pathology, Faculty of Medicine, University of Tripoli, Tripoli, Libya
| | - Madeleine L Craze
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Maryam Althobiti
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK.,Department of Clinical Laboratory Science, College of Applied Medical Science, Shaqra University 33, Shaqra, 11961, Saudi Arabia
| | - Lutfi Alfarsi
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Ian O Ellis
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Emad A Rakha
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Andrew R Green
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1PB, UK.
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13
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Huang SH, McCann CD, Mota TM, Wang C, Lipkin SM, Jones RB. Have Cells Harboring the HIV Reservoir Been Immunoedited? Front Immunol 2019; 10:1842. [PMID: 31447850 PMCID: PMC6691121 DOI: 10.3389/fimmu.2019.01842] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 07/22/2019] [Indexed: 01/05/2023] Open
Abstract
Immunoediting is an important concept in oncology, delineating the mechanisms through which tumors are selected for resistance to immune-mediated elimination. The recent emergence of immunotherapies, such as checkpoint inhibitors, as pillars of cancer therapy has intensified interest in immunoediting as a constraint limiting the efficacy of these approaches. Immunoediting manifests at a number of levels for different cancers, for example through the establishment of immunosuppressive microenvironments within solid tumors. Of particular interest to the current review, selection also occurs at the cellular level; and recent studies have revealed novel mechanisms by which tumor cells acquire intrinsic resistance to immune recognition and elimination. While the selection of escape mutations in viral epitopes by HIV-specific T cells, which is a hallmark of chronic HIV infection, can be considered a form of immunoediting, few studies have considered the possibility that HIV-infected cells themselves may parallel tumors in having differential intrinsic susceptibilities to immune-mediated elimination. Such selection, on the level of an infected cell, may not play a significant role in untreated HIV, where infection is propagated by high levels of cell-free virus produced by cells that quickly succumb to viral cytopathicity. However, it may play an unappreciated role in individuals treated with effective antiretroviral therapy where viral replication is abrogated. In this context, an "HIV reservoir" persists, comprising long-lived infected cells which undergo extensive and dynamic clonal expansion. The ability of these cells to persist in infected individuals has generally been attributed to viral latency, thought to render them invisible to immune recognition, and/or to their compartmentalization in anatomical sites that are poorly accessible to immune effectors. Recent data from ex vivo studies have led us to propose that reservoir-harboring cells may additionally have been selected for intrinsic resistance to CD8+ T cells, limiting their elimination even in the context of antigen expression. Here, we draw on knowledge from tumor immunoediting to discuss potential mechanisms by which clones of HIV reservoir-harboring cells may resist elimination by CD8+ T cells. The establishment of such parallels may provide a premise for testing therapeutics designed to sensitize tumor cells to immune-mediated elimination as novel approaches aimed at curing HIV infection.
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Affiliation(s)
- Szu-Han Huang
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - Chase D. McCann
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
- Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY, United States
| | - Talia M. Mota
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - Chao Wang
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - Steven M. Lipkin
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
| | - R. Brad Jones
- Department of Medicine, Weill Cornell Medical College, New York, NY, United States
- Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY, United States
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14
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Park SM, Youn JI. Role of myeloid-derived suppressor cells in immune checkpoint inhibitor therapy in cancer. Arch Pharm Res 2019; 42:560-566. [PMID: 31147902 DOI: 10.1007/s12272-019-01165-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 05/27/2019] [Indexed: 12/29/2022]
Abstract
Over the past decade, immune checkpoint inhibitor (ICI) therapy has demonstrated improved therapeutic efficacy in a wide range of cancers. However, the benefits are restricted to a small population of patients. Therefore, studies on understanding the mechanisms resistant to ICI therapy and for finding predictive biomarkers for ICI therapy are being actively conducted. Recent studies have demonstrated that myeloid-derived suppressor cells (MDSC) inhibit ICI therapy by various mechanisms, and that the response to ICI therapy can be improved by blocking MDSC activity. Moreover, low level of MDSC in patients with cancer has been shown to be correlated with their good prognosis after ICI treatment, thereby suggesting MDSC as a predictive biomarker in this regard. This review focuses on the roles of MDSC in ICI therapy and their relevant applications.
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Affiliation(s)
- Su-Myeong Park
- Yonsei Cancer Center, Division of Medical Oncology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Je-In Youn
- Research Institute, ProGen Inc, Seongnam, Gyeonggi-do, 13488, Republic of Korea. .,Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, Republic of Korea.
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15
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Polyphenols as Immunomodulatory Compounds in the Tumor Microenvironment: Friends or Foes? Int J Mol Sci 2019; 20:ijms20071714. [PMID: 30959898 PMCID: PMC6479528 DOI: 10.3390/ijms20071714] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 02/07/2023] Open
Abstract
Polyphenols are natural antioxidant compounds ubiquitously found in plants and, thus, ever present in human nutrition (tea, wine, chocolate, fruits and vegetables are typical examples of polyphenol-rich foods). Widespread evidence indicate that polyphenols exert strong antioxidant, anti-inflammatory, anti-microbial and anti-cancer activities, and thus, they are generally regarded to as all-purpose beneficial nutraceuticals or supplements whose use can only have a positive influence on the body. A closer look to the large body of results of years of investigations, however, present a more complex scenario where polyphenols exert different and, sometimes, paradoxical effects depending on dose, target system and cell type and the biological status of the target cell. Particularly, the immunomodulatory potential of polyphenols presents two opposite faces to researchers trying to evaluate their usability in future cancer therapies: on one hand, these compounds could be beneficial suppressors of peri-tumoral inflammation that fuels cancer growth. On the other hand, they might suppress immunotherapeutic approaches and give rise to immunosuppressive cell clones that, in turn, would aid tumor growth and dissemination. In this review, we summarize knowledge of the immunomodulatory effects of polyphenols with a particular focus on cancer microenvironment and immunotherapy, highlighting conceptual pitfalls and delicate cell-specific effects in order to aid the design of future therapies involving polyphenols as chemoadjuvants.
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16
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Hashemzadeh N, Adibkia K, Barar J. Indoleamine 2, 3-dioxygenase inhibitors in immunochemotherapy of breast cancer: challenges and opportunities. ACTA ACUST UNITED AC 2018; 9:1-3. [PMID: 30788254 PMCID: PMC6378097 DOI: 10.15171/bi.2019.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 10/08/2018] [Indexed: 11/09/2022]
Abstract
Trafficking of macromolecular immunotherapy agent into the tumor microenvironment (TME) is a challenging issue. In the TME, cancer cells exploit indoleamine 2, 3-dioxygenase (IDO), as a cytosolic enzyme that catalyzes the L-tryptophan (Trp) through the kynurenine (Kyn) pathway, which could negatively regulate the activity of T cells. Thus, Trp/Kyn pathway, can be targeted with novel treatment modalities such as IDO1 inhibitor to benefit patients with aggressive solid tumors.
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Affiliation(s)
- Nastran Hashemzadeh
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Students' Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khosro Adibkia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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17
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Netea-Maier RT, Smit JW, Netea MG. Metabolic changes in tumor cells and tumor-associated macrophages: A mutual relationship. Cancer Lett 2018; 413:102-109. [DOI: 10.1016/j.canlet.2017.10.037] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/22/2017] [Accepted: 10/24/2017] [Indexed: 12/21/2022]
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18
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Rodríguez JA. HLA-mediated tumor escape mechanisms that may impair immunotherapy clinical outcomes via T-cell activation. Oncol Lett 2017; 14:4415-4427. [PMID: 29085437 PMCID: PMC5649701 DOI: 10.3892/ol.2017.6784] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 03/31/2017] [Indexed: 12/15/2022] Open
Abstract
Although the immune system provides protection from cancer by means of immunosurveillance, which serves a major function in eliminating cancer cells, it may also lead to cancer immunoediting, molding tumor immunogenicity. Cancer cells exploit several molecular mechanisms to thwart immune-mediated death by disabling cellular components of the immune system associated with tumor recognition and rejection. Human leukocyte antigen (HLA) molecules are mandatory for the immune recognition and subsequent killing of neoplastic cells by the immune system, as tumor antigens must be presented in an HLA-restricted manner to be recognized by T-cell receptors. Impaired HLA-I expression prevents the activation of cytotoxic immune mechanisms, whereas impaired HLA-II expression affects the antigen-presenting capability of antigen presenting cells. Aberrant HLA-G expression by cancer cells favors immune escape by inhibiting the activities of virtually all immune cells. The development of cancer therapies based on T-cell activation must consider these HLA-associated immune evasion mechanisms, as alterations in their expression occur early and frequently in the majority of types of cancer, and have an adverse impact on the clinical response to immunotherapy. Herein, the concept of altered HLA expression as a mechanism exploited by tumors to escape immune control and induce an immunosuppressive environment is reviewed. A number of novel clinical immunotherapeutic approaches used for cancer treatment are also reviewed, and strategies for overcoming the limitations of these immunotherapeutic interventions are proposed.
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Affiliation(s)
- Josefa A Rodríguez
- Cancer Biology Research Group, National Cancer Institute of Colombia, 111511 Bogotá, Colombia
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19
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Klauber TC, Laursen JM, Zucker D, Brix S, Jensen SS, Andresen TL. Delivery of TLR7 agonist to monocytes and dendritic cells by DCIR targeted liposomes induces robust production of anti-cancer cytokines. Acta Biomater 2017; 53:367-377. [PMID: 28153581 DOI: 10.1016/j.actbio.2017.01.072] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 01/21/2017] [Accepted: 01/27/2017] [Indexed: 12/17/2022]
Abstract
Tumor immune escape is today recognized as an important cancer hallmark and is therefore a major focus area in cancer therapy. Monocytes and dendritic cells (DCs), which are central to creating a robust anti-tumor immune response and establishing an anti-tumorigenic microenvironment, are directly targeted by the tumor escape mechanisms to develop immunosuppressive phenotypes. Providing activated monocytes and DCs to the tumor tissue is therefore an attractive way to break the tumor-derived immune suppression and reinstate cancer immune surveillance. To activate monocytes and DCs with high efficiency, we have investigated an immunotherapeutic Toll-like receptor (TLR) agonist delivery system comprising liposomes targeted to the dendritic cell immunoreceptor (DCIR). We formulated the immune stimulating TLR7 agonist TMX-202 in the liposomes and examined the targeting of the liposomes as well as their immune activating potential in blood-derived monocytes, myeloid DCs (mDCs), and plasmacytoid DCs (pDCs). Monocytes and mDCs were targeted with high specificity over lymphocytes, and exhibited potent TLR7-specific secretion of the anti-cancer cytokines IL-12p70, IFN-α 2a, and IFN-γ. This delivery system could be a way to improve cancer treatment either in the form of a vaccine with co-formulated antigen or as an immunotherapeutic vector to boost monocyte and DC activity in combination with other treatment protocols such as chemotherapy or radiotherapy. STATEMENT OF SIGNIFICANCE Cancer immunotherapy is a powerful new tool in the oncologist's therapeutic arsenal, with our increased knowledge of anti-tumor immunity providing many new targets for intervention. Monocytes and dendritic cells (DCs) are attractive targets for enhancing the anti-tumor immune response, but systemic delivery of immunomodulators has proven to be associated with a high risk of fatal adverse events due to the systemic activation of the immune system. We address this important obstacle by targeting the delivery of an immunomodulator, a Toll-like receptor agonist, to DCs and monocytes in the bloodstream. We thus focus the activation, potentially avoiding the above-mentioned adverse effects, and demonstrate greatly increased ability of the agonist to induce secretion of anti-cancer cytokines.
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20
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Vyas M, Müller R, Pogge von Strandmann E. Antigen Loss Variants: Catching Hold of Escaping Foes. Front Immunol 2017; 8:175. [PMID: 28286501 PMCID: PMC5323381 DOI: 10.3389/fimmu.2017.00175] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/06/2017] [Indexed: 01/02/2023] Open
Abstract
Since mid-1990s, the field of cancer immunotherapy has seen steady growth and selected immunotherapies are now a routine and preferred therapeutic option of certain malignancies. Both active and passive cancer immunotherapies exploit the fact that tumor cells express specific antigens on the cell surface, thereby mounting an immune response specifically against malignant cells. It is well established that cancer cells typically lose surface antigens following natural or therapy-induced selective pressure and these antigen-loss variants are often the population that causes therapy-resistant relapse. CD19 and CD20 antigen loss in acute lymphocytic leukemia and chronic lymphocytic leukemia, respectively, and lineage switching in leukemia associated with mixed lineage leukemia (MLL) gene rearrangements are well-documented evidences in this regard. Although increasing number of novel immunotherapies are being developed, majority of these do not address the control of antigen loss variants. Here, we review the occurrence of antigen loss variants in leukemia and discuss the therapeutic strategies to tackle the same. We also present an approach of dual-targeting immunoligand effectively retargeting NK cells against antigen loss variants in MLL-associated leukemia. Novel immunotherapies simultaneously targeting more than one tumor antigen certainly hold promise to completely eradicate tumor and prevent therapy-resistant relapses.
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Affiliation(s)
- Maulik Vyas
- Experimental Tumor Research, Center for Tumor Biology and Immunology, Clinic for Hematology, Oncology and Immunology, Philipps University , Marburg , Germany
| | - Rolf Müller
- Institute of Molecular Biology and Tumor Research, Center for Tumor Biology and Immunology, Philipps University , Marburg , Germany
| | - Elke Pogge von Strandmann
- Experimental Tumor Research, Center for Tumor Biology and Immunology, Clinic for Hematology, Oncology and Immunology, Philipps University , Marburg , Germany
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21
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Luna JI, Grossenbacher SK, Murphy WJ, Canter RJ. Targeting Cancer Stem Cells with Natural Killer Cell Immunotherapy. Expert Opin Biol Ther 2016; 17:313-324. [PMID: 27960589 DOI: 10.1080/14712598.2017.1271874] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Standard cytoreductive cancer therapy, such as chemotherapy and radiotherapy, are frequently resisted by a small portion of cancer cells with 'stem-cell' like properties including quiescence and repopulation. Immunotherapy represents a breakthrough modality for improving oncologic outcomes in cancer patients. Since the success of immunotherapy is not contingent on target cell proliferation, it may also be uniquely suited to address the problem of resistance and repopulation exerted by cancer stem cells (CSCs). Areas covered: Natural killer (NK) cells have long been known for their ability to reject allogeneic hematopoietic stem cells, and there are increasing data demonstrating that NK cells can selectively identify and lyse CSCs. The authors review the current knowledge of CSCs and NK cells and highlight recent studies that support the concept that NK cells are capable of targeting CSC in solid tumors, especially in the context of combination therapy simultaneously targeting non-CSCs and CSCs. Expert opinion: Unlike cytotoxic cancer treatments, NK cells can target and eliminate quiescent/non-proliferating cells such as CSCs, and these enigmatic cells are an important source of relapse and metastasis. NK targeting of CSCs represents a novel and potentially high impact method to capitalize on the intrinsic therapeutic potential of NK cells.
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Affiliation(s)
- Jesus I Luna
- a Department of Dermatology , University of California Davis School of Medicine , Sacramento , CA USA
| | - Steven K Grossenbacher
- a Department of Dermatology , University of California Davis School of Medicine , Sacramento , CA USA
| | - William J Murphy
- a Department of Dermatology , University of California Davis School of Medicine , Sacramento , CA USA.,b Department of Internal Medicine , University of California Davis Medical Center , Sacramento , CA USA
| | - Robert J Canter
- c Division of Surgical Oncology, Department of Surgery , University of California Davis School of Medicine , Sacramento , CA USA
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22
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Smits NC, Coupet TA, Godbersen C, Sentman CL. Designing multivalent proteins based on natural killer cell receptors and their ligands as immunotherapy for cancer. Expert Opin Biol Ther 2016; 16:1105-12. [PMID: 27248342 DOI: 10.1080/14712598.2016.1195364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Natural killer (NK) cells are an important component of the innate immune system that play a key role in host immunity against cancer. NK cell recognition and activation is based on cell surface receptors recognizing specific ligands that are expressed on many types of tumor cells. Some of these receptors are capable of activating NK cell function while other receptors inhibit NK cell function. Therapeutic approaches to treat cancer have been developed based on preventing NK cell inhibition or using NK cell receptors and their ligands to activate NK cells or T cells to destroy tumor cells. AREAS COVERED This article describes the various strategies for targeting NK cell receptors and NK cell receptor ligands using multivalent proteins to activate immunity against cancer. EXPERT OPINION NK cell receptors work in synergy to activate NK cell effector responses. Effective anti-cancer strategies will need to not only kill tumor cells but must also lead to the destruction of the tumor microenvironment. Immunotherapy based on NK cells and their receptors has the capacity to accomplish this through triggering lymphocyte cytotoxicity and cytokine production.
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Affiliation(s)
- Nicole C Smits
- a Department of Microbiology and Immunology and the Center for Synthetic Immunity , The Geisel School of Medicine at Dartmouth , Lebanon , NH , USA
| | - Tiffany A Coupet
- a Department of Microbiology and Immunology and the Center for Synthetic Immunity , The Geisel School of Medicine at Dartmouth , Lebanon , NH , USA
| | - Claire Godbersen
- a Department of Microbiology and Immunology and the Center for Synthetic Immunity , The Geisel School of Medicine at Dartmouth , Lebanon , NH , USA
| | - Charles L Sentman
- a Department of Microbiology and Immunology and the Center for Synthetic Immunity , The Geisel School of Medicine at Dartmouth , Lebanon , NH , USA
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Nakajima H, Murakami Y, Morii E, Akao T, Tatsumi N, Odajima S, Fukuda M, Machitani T, Iwai M, Kawata S, Hojo N, Oka Y, Sugiyama H, Oji Y. Induction of eEF2-specific antitumor CTL responses in vivo by vaccination with eEF2-derived 9mer-peptides. Oncol Rep 2016; 35:1959-66. [PMID: 26820500 DOI: 10.3892/or.2016.4589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 11/24/2015] [Indexed: 11/05/2022] Open
Abstract
Eukaryotic elongation factor 2 (eEF2) is an essential factor for protein synthesis. Previous studies have shown that the eEF2 gene was overexpressed and plays an oncogenic role in various types of cancers and that eEF2 gene product elicited both humoral immune responses to produce eEF2-specific IgG autoantibody in cancer-bearing individuals and cellular immune responses to induce eEF2 peptide-specific cytotoxic T lymphocytes (CTLs) in vitro. The purpose of the present study was to induce eEF2-specific, antitumor CTL responses in vivo by vaccination with MHC class I-binding eEF2-derived peptide. First, two mouse MHC class I-restricted eEF2‑derived, 9-mer peptides, EF17 (17-25 aa, ANIRNMSVI) and EF180 (180-188 aa, RIVENVNVI) were identified as eEF2-specific CTL peptides, and mice were vaccinated intradermally eight times with either EF17 or EF180 peptide emulsified with Montanide ISA51 adjuvant. Cytotoxicity assay showed that eEF2-specific CTLs were induced in both EF17‑and EF180‑vaccinated mice, and histological study showed no detectable damage in the organs of these mice. Next, to examine in vivo antitumor effects of eEF2 peptide vaccination in a therapeutic model, mice were vaccinated four times with one each of the two eEF2 peptides at weekly intervals after implantation of eEF2-expressing leukemia cells. The vaccination with eEF2 peptides induced eEF2-specific CTLs and suppressed tumor growth, and disease-free survival was significantly longer in EF180-vaccinated mice compared to control mice. The survival was associated with the robustness of eEF2-specific CTL induction. These results indicate that vaccination with MHC class I-binding eEF2 peptide induced eEF2-targeting, antitumor CTL responses in vivo without damage to normal organs, which provided us a rationale for eEF2 peptide-based cancer immunotherapy.
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Affiliation(s)
- Hiroko Nakajima
- Department of Cancer Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yui Murakami
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Eiichi Morii
- Department of Pathology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toshiki Akao
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Naoya Tatsumi
- Department of Cancer Immunotherapy, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Satoko Odajima
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Mari Fukuda
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takao Machitani
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Miki Iwai
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Sayo Kawata
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Nozomi Hojo
- Department of Functional Diagnostic Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshihiro Oka
- Department of Cancer Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Haruo Sugiyama
- Department of Cancer Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yusuke Oji
- Department of Cancer Stem Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
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24
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Dushyanthen S, Beavis PA, Savas P, Teo ZL, Zhou C, Mansour M, Darcy PK, Loi S. Relevance of tumor-infiltrating lymphocytes in breast cancer. BMC Med 2015; 13:202. [PMID: 26300242 PMCID: PMC4547422 DOI: 10.1186/s12916-015-0431-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/22/2015] [Indexed: 12/13/2022] Open
Abstract
While breast cancer has not been considered a cancer amenable to immunotherapeutic approaches, recent studies have demonstrated evidence of significant immune cell infiltration via tumor-infiltrating lymphocytes in a subset of patient tumors. In this review we present the current evidence highlighting the clinical relevance and utility of tumor-infiltrating lymphocytes in breast cancer. Retrospective and prospective studies have shown that the presence of tumor-infiltrating lymphocytes is a prognostic marker for higher responses to neoadjuvant chemotherapy and better survival, particularly in triple negative and HER2-positive early breast cancer. Further work is required to determine the immune subsets important in this response and to discover ways of encouraging immune infiltrate in tumor-infiltrating lymphocytes-negative patients.
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Affiliation(s)
- Sathana Dushyanthen
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Paul A Beavis
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Peter Savas
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Zhi Ling Teo
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Chenhao Zhou
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Mariam Mansour
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - Phillip K Darcy
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC, Australia
| | - Sherene Loi
- Division of Research and Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia. .,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC, Australia. .,Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia.
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25
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Bloy N, Buqué A, Aranda F, Castoldi F, Eggermont A, Cremer I, Sautès-Fridman C, Fucikova J, Galon J, Spisek R, Tartour E, Zitvogel L, Kroemer G, Galluzzi L. Trial watch: Naked and vectored DNA-based anticancer vaccines. Oncoimmunology 2015; 4:e1026531. [PMID: 26155408 PMCID: PMC4485755 DOI: 10.1080/2162402x.2015.1026531] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 02/27/2015] [Indexed: 12/28/2022] Open
Abstract
One type of anticancer vaccine relies on the administration of DNA constructs encoding one or multiple tumor-associated antigens (TAAs). The ultimate objective of these preparations, which can be naked or vectored by non-pathogenic viruses, bacteria or yeast cells, is to drive the synthesis of TAAs in the context of an immunostimulatory milieu, resulting in the (re-)elicitation of a tumor-targeting immune response. In spite of encouraging preclinical results, the clinical efficacy of DNA-based vaccines employed as standalone immunotherapeutic interventions in cancer patients appears to be limited. Thus, efforts are currently being devoted to the development of combinatorial regimens that allow DNA-based anticancer vaccines to elicit clinically relevant immune responses. Here, we discuss recent advances in the preclinical and clinical development of this therapeutic paradigm.
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Key Words
- AFP, α-fetoprotein
- APC, antigen-presenting cell
- CDR, complementarity-determining region
- CEA, carcinoembryonic antigen
- CIN, cervical intraepithelial neoplasia
- CTLA4, cytotoxic T lymphocyte protein 4
- DAMP, damage-associated molecular pattern
- DC, dendritic cell
- FDA, Food and Drug Administration
- GM-CSF, granulocyte macrophage colony-stimulating factor
- GX-188E
- HCC, hepatocellular carcinoma
- HNSCC, head and neck squamous cell carcinoma
- HPV, human papillomavirus
- IL, interleukin
- OS, overall survival
- OVA, ovalbumin
- PAP, prostate acid phosphatase
- SCGB2A2, secretoglobin, family 2A, member 2
- SOX2, SRY (sex determining region Y)-box 2
- T, brachyury homolog
- TAA, tumor-associated antigen
- TLR, Toll-like receptor
- TRA, tumor rejection antigen
- Treg, regulatory T cell
- VGX-3100
- WT1, Wilms tumor 1
- adjuvants
- dendritic cell
- electroporation
- mucosal immunity
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Affiliation(s)
- Norma Bloy
- Gustave Roussy Cancer Campus; Villejuif, France
- INSERM, U1138; Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Center de Recherche des Cordeliers; Paris, France
| | - Aitziber Buqué
- Gustave Roussy Cancer Campus; Villejuif, France
- INSERM, U1138; Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Center de Recherche des Cordeliers; Paris, France
| | - Fernando Aranda
- Group of Immune receptors of the Innate and Adaptive System; Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS); Barcelona, Spain
| | - Francesca Castoldi
- Gustave Roussy Cancer Campus; Villejuif, France
- INSERM, U1138; Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Center de Recherche des Cordeliers; Paris, France
- Faculté de Medicine; Université Paris Sud/Paris XI; Le Kremlin-Bicêtre, France
- Sotio a.c; Prague, Czech Republic
| | | | - Isabelle Cremer
- INSERM, U1138; Paris, France
- Equipe 13; Center de Recherche des Cordeliers; Paris, France
- Université Pierre et Marie Curie/Paris VI; Paris, France
| | - Catherine Sautès-Fridman
- INSERM, U1138; Paris, France
- Equipe 13; Center de Recherche des Cordeliers; Paris, France
- Université Pierre et Marie Curie/Paris VI; Paris, France
| | - Jitka Fucikova
- Sotio a.c; Prague, Czech Republic
- Dept. of Immunology; 2 Faculty of Medicine and University Hospital Motol; Charles University; Prague, Czech Republic
| | - Jérôme Galon
- INSERM, U1138; Paris, France
- Université Pierre et Marie Curie/Paris VI; Paris, France
- Laboratory of Integrative Cancer Immunology; Center de Recherche des Cordeliers; Paris, France
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
| | - Radek Spisek
- Sotio a.c; Prague, Czech Republic
- Dept. of Immunology; 2 Faculty of Medicine and University Hospital Motol; Charles University; Prague, Czech Republic
| | - Eric Tartour
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
- INSERM, U970; Paris, France
- Paris-Cardiovascular Research Center (PARCC); Paris, France
- Service d'Immunologie Biologique; Hôpital Européen Georges Pompidou (HEGP); AP-HP; Paris, France
| | - Laurence Zitvogel
- Gustave Roussy Cancer Campus; Villejuif, France
- INSERM, U1015, CICBT507; Villejuif, France
| | - Guido Kroemer
- INSERM, U1138; Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Center de Recherche des Cordeliers; Paris, France
- Université Pierre et Marie Curie/Paris VI; Paris, France
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
- Pôle de Biologie; Hôpital Européen Georges Pompidou; AP-HP; Paris, France
- Metabolomics and Cell Biology Platforms; Gustave Roussy Cancer Campus; Villejuif, France
| | - Lorenzo Galluzzi
- Gustave Roussy Cancer Campus; Villejuif, France
- INSERM, U1138; Paris, France
- Equipe 11 labellisée par la Ligue Nationale contre le Cancer; Center de Recherche des Cordeliers; Paris, France
- Université Pierre et Marie Curie/Paris VI; Paris, France
- Université Paris Descartes/Paris V; Sorbonne Paris Cité; Paris, France
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26
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Wang JY, Bettegowda C. Genetics and immunotherapy: using the genetic landscape of gliomas to inform management strategies. J Neurooncol 2015; 123:373-83. [PMID: 25697584 DOI: 10.1007/s11060-015-1730-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 02/01/2015] [Indexed: 02/07/2023]
Abstract
Recent work in genetics has identified essential driver mutations in gliomas and has profoundly changed our understanding of tumorigenesis. New insights into the molecular basis of glioma has informed the development of therapies demonstrating considerable potential, including immunotherapeutic approaches such as peptide and dendritic cell vaccines against EGFRvIII. However, the selective targeting of one component of a dysregulated pathway may be inadequate for a durable clinical response, given the intratumoral heterogeneity of glioblastoma (GBM) and hypermutated profiles displayed by tumor recurrences. Immune checkpoint blockade with anti-cytotoxic T lymphocyte antigen-4 (CTLA) and anti-programmed cell death 1 (PD-1) have demonstrated encouraging results in clinical trials with other solid tumors, and recent data suggest that this type of therapy may be particularly useful for tumors with high mutational burdens. Although the survival for patients with GBM has remains grim, the use of immunotherapy may finally change patient outcomes.
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Affiliation(s)
- Joanna Y Wang
- Department of Neurosurgery, The Johns Hopkins Hospital, Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Phipps 118, Baltimore, MD, 21287, USA
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27
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Brauns T, Leblanc P, Gelfand JA, Poznanski M. Could mycobacterial Hsp70-containing fusion protein lead the way to an affordable therapeutic cancer vaccine? Expert Rev Vaccines 2014; 14:435-46. [PMID: 25496347 DOI: 10.1586/14760584.2015.979797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cancer vaccine development efforts have recently gained momentum, but most vaccines showing clinical impact in human trials tend to be based on technology approaches that are very costly and difficult to produce at scale. With the projected doubling of the incidence of cancer and its related cost of care in the U.S. over the next two decades, the widespread clinical use of such vaccines will prove difficult to justify. Heat shock protein-based vaccines have shown the potential to elicit clinically meaningful immunologic responses in cancer, but the predominant development approach - heat shock protein-peptide complexes derived from a patient's own tumor - face similar challenges of cost and scalability. New innovative modalities for deploying heat shock proteins in cancer vaccines may open the door to vaccines that can generate potent cytotoxic responses against multiple tumor targets and can be made in a cost-effective and scalable manner.
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Affiliation(s)
- Timothy Brauns
- Vaccine and Immunotherapy Center, Massachusetts General Hospital - Medicine/Infectious Diseases, 149 13th Street, Mailstop 149-5-5246, Charlestown, MA 02129, USA
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28
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Ma C, Fan R. Cancer immunotherapy and next-generation clinical immune assessment. Front Oncol 2014; 4:265. [PMID: 25309877 PMCID: PMC4173308 DOI: 10.3389/fonc.2014.00265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 09/09/2014] [Indexed: 12/20/2022] Open
Affiliation(s)
- Chao Ma
- Division of Physics, Mathematics and Astronomy, California Institute of Technology , Pasadena, CA , USA ; David Geffen School of Medicine, University of California Los Angeles , Los Angeles, CA , USA
| | - Rong Fan
- Department of Biomedical Engineering, Yale University , New Haven, CT , USA ; Yale Comprehensive Cancer Center , New Haven, CT , USA
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29
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Abstract
PURPOSE OF REVIEW Loss of cell growth control is not sufficient to explain why tumours form as the immune system recognizes many malignant cells and keeps them in check. The local inflammatory microenvironment is a pivotal factor in tumour formation, as tumour-associated inflammation actively suppresses antitumour immunity. The purpose of this review is to evaluate emerging evidence that amino acid catabolism is a key feature of tumour-associated inflammation that supports tumour progression and immune resistance to therapy. RECENT FINDINGS Enhanced amino acid catabolism in inflammatory tumour microenvironments correlates with carcinogen resistance and immune regulation mediated by tumour-associated immune cells that protect tumours from natural and vaccine-induced immunity. Interfering with metabolic pathways exploited by tumours is a promising antitumour strategy, especially when combined with other therapies. Moreover, molecular sensors that evolved to detect pathogens may enhance evasion of immune surveillance to permit tumour progression. SUMMARY Innate immune sensing that induces amino acid catabolism in tumour microenvironments may be pivotal in initiating and sustaining local inflammation that promotes immune resistance and attenuates antitumour immunity. Targeting molecular sensors that mediate these metabolic changes may be an effective strategy to enhance antitumour immunity that prevents tumour progression, as well as improving the efficacy of cancer therapy.
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30
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Kidane D, Chae WJ, Czochor J, Eckert KA, Glazer PM, Bothwell ALM, Sweasy JB. Interplay between DNA repair and inflammation, and the link to cancer. Crit Rev Biochem Mol Biol 2014; 49:116-39. [PMID: 24410153 DOI: 10.3109/10409238.2013.875514] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
DNA damage and repair are linked to cancer. DNA damage that is induced endogenously or from exogenous sources has the potential to result in mutations and genomic instability if not properly repaired, eventually leading to cancer. Inflammation is also linked to cancer. Reactive oxygen and nitrogen species (RONs) produced by inflammatory cells at sites of infection can induce DNA damage. RONs can also amplify inflammatory responses, leading to increased DNA damage. Here, we focus on the links between DNA damage, repair, and inflammation, as they relate to cancer. We examine the interplay between chronic inflammation, DNA damage and repair and review recent findings in this rapidly emerging field, including the links between DNA damage and the innate immune system, and the roles of inflammation in altering the microbiome, which subsequently leads to the induction of DNA damage in the colon. Mouse models of defective DNA repair and inflammatory control are extensively reviewed, including treatment of mouse models with pathogens, which leads to DNA damage. The roles of microRNAs in regulating inflammation and DNA repair are discussed. Importantly, DNA repair and inflammation are linked in many important ways, and in some cases balance each other to maintain homeostasis. The failure to repair DNA damage or to control inflammatory responses has the potential to lead to cancer.
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Affiliation(s)
- Dawit Kidane
- Departments of Therapeutic Radiology and Genetics
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31
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Swartz AM, Li QJ, Sampson JH. Rindopepimut: a promising immunotherapeutic for the treatment of glioblastoma multiforme. Immunotherapy 2014; 6:679-90. [PMID: 25186601 PMCID: PMC4524671 DOI: 10.2217/imt.14.21] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive glial cell-derived primary tumor. Current standard of care for patients with GBM includes maximal tumor resection plus adjuvant radiotherapy and temozolomide chemotherapy, increasing median overall survival to a mere 15 months from diagnosis. Because these therapies are inherently nonspecific, there is an increased likelihood of off-target and incomplete effects; therefore, targeted modalities are required for enhanced safety and efficacy. Rindopepimut is emerging as a safe and potentially effective drug for the treatment of GBM. Rindopepimut consists of a 14-mer peptide that spans the length of EGF receptor variant III, a mutant variant of EGF receptor found on approximately 30% of primary GBM, conjugated to the carrier protein keyhole limpet hemocyanin. Vaccination with rindopepimut has been shown to specifically eliminate cells expressing EGF receptor variant III. Phase II clinical trials have suggested that vaccination of newly diagnosed GBM patients with rindopepimut plus adjuvant granulocyte-macrophage colony-stimulating factor results in prolonged progression-free and overall survival with minimal toxicity. This review will outline the development of rindopepimut, as well as the current status of this vaccine.
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Affiliation(s)
- AM Swartz
- Duke University Medical Center, Department of Surgery, Division of Neurosurgery, DUMC Box 3050, Durham, NC 27710, Phone: (919) 684-9041, Fax: (919) 684-9045
| | - QJ Li
- Duke University Medical Center, Department of Surgery, Division of Neurosurgery, DUMC Box 3050, Durham, NC 27710, Phone: (919) 684-9041, Fax: (919) 684-9045
| | - JH Sampson
- Duke University Medical Center, Department of Surgery, Division of Neurosurgery, DUMC Box 3050, Durham, NC 27710, Phone: (919) 684-9041, Fax: (919) 684-9045
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