551
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5-Azacytidine treatment sensitizes tumor cells to T-cell mediated cytotoxicity and modulates NK cells in patients with myeloid malignancies. Blood Cancer J 2014; 4:e197. [PMID: 24681961 PMCID: PMC3972700 DOI: 10.1038/bcj.2014.14] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 02/11/2014] [Indexed: 01/16/2023] Open
Abstract
Treatment with the demethylating agent 5-Azacytidine leads to prolonged survival for patients with myelodysplastic syndrome, and the demethylation induces upregulation of cancer-testis antigens. Cancer-testis antigens are well-known targets for immune recognition in cancer, and the immune system may have a role in this treatment regimen. We show here that 5-Azacytidine treatment leads to increased T-cell recognition of tumor cells. T-cell responses against a large panel of cancer-testis antigens were detected before treatment, and these responses were further induced upon initiation of treatment. These characteristics point to an ideal combination of 5-Azacytidine and immune therapy to preferentially boost T-cell responses against cancer-testis antigens. To initiate such combination therapy, essential knowledge is required about the general immune modulatory effect of 5-Azacytidine. We therefore examined potential treatment effects on both immune stimulatory (CD8 and CD4 T cells and Natural Killer (NK) cells) and immune inhibitory cell subsets (myeloid-derived suppressor cells and regulatory T cells). We observed a minor decrease and modulation of NK cells, but for all other populations no effects could be detected. Together, these data support a strategy for combining 5-Azacytidine treatment with immune therapy for potential clinical benefit.
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552
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Dheda K, Gumbo T, Gandhi NR, Murray M, Theron G, Udwadia Z, Migliori GB, Warren R. Global control of tuberculosis: from extensively drug-resistant to untreatable tuberculosis. THE LANCET RESPIRATORY MEDICINE 2014; 2:321-38. [PMID: 24717628 DOI: 10.1016/s2213-2600(14)70031-1] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Extensively drug-resistant tuberculosis is a burgeoning global health crisis mainly affecting economically active young adults, and has high mortality irrespective of HIV status. In some countries such as South Africa, drug-resistant tuberculosis represents less than 3% of all cases but consumes more than a third of the total national budget for tuberculosis, which is unsustainable and threatens to destabilise national tuberculosis programmes. However, concern about drug-resistant tuberculosis has been eclipsed by that of totally and extremely drug-resistant tuberculosis--ie, resistance to all or nearly all conventional first-line and second-line antituberculosis drugs. In this Review, we discuss the epidemiology, pathogenesis, diagnosis, management, implications for health-care workers, and ethical and medicolegal aspects of extensively drug-resistant tuberculosis and other resistant strains. Finally, we discuss the emerging problem of functionally untreatable tuberculosis, and the issues and challenges that it poses to public health and clinical practice. The emergence and growth of highly resistant strains of tuberculosis make the development of new drugs and rapid diagnostics for tuberculosis--and increased funding to strengthen global control efforts, research, and advocacy--even more pressing.
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Affiliation(s)
- Keertan Dheda
- Lung Infection and Immunity Unit, Division of Pulmonology and UCT Lung Institute, Department of Medicine, University of Cape Town, Cape Town, South Africa; Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
| | - Tawanda Gumbo
- Office of Global Health and Department of Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Neel R Gandhi
- Departments of Epidemiology, Global Health, and Infectious Diseases, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Megan Murray
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
| | - Grant Theron
- Lung Infection and Immunity Unit, Division of Pulmonology and UCT Lung Institute, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | | | - G B Migliori
- WHO Collaborating Centre for TB and Lung Diseases, Fondazione S Maugeri, Care and Research Institute, Tradate, Italy
| | - Robin Warren
- DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, MRC Centre for Molecular and Cellular Biology, Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
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553
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Yang B, Wang X, Jiang J, Zhai F, Cheng X. Identification of CD244-expressing myeloid-derived suppressor cells in patients with active tuberculosis. Immunol Lett 2014; 158:66-72. [DOI: 10.1016/j.imlet.2013.12.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/30/2013] [Accepted: 12/02/2013] [Indexed: 12/21/2022]
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554
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Almendros I, Wang Y, Becker L, Lennon FE, Zheng J, Coats BR, Schoenfelt KS, Carreras A, Hakim F, Zhang SX, Farré R, Gozal D. Intermittent hypoxia-induced changes in tumor-associated macrophages and tumor malignancy in a mouse model of sleep apnea. Am J Respir Crit Care Med 2014; 189:593-601. [PMID: 24471484 PMCID: PMC3977714 DOI: 10.1164/rccm.201310-1830oc] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 01/20/2014] [Indexed: 12/11/2022] Open
Abstract
RATIONALE An increased cancer aggressiveness and mortality have been recently reported among patients with obstructive sleep apnea (OSA). Intermittent hypoxia (IH), a hallmark of OSA, enhances melanoma growth and metastasis in mice. OBJECTIVES To assess whether OSA-related adverse cancer outcomes occur via IH-induced changes in host immune responses, namely tumor-associated macrophages (TAMs). MEASUREMENTS AND MAIN RESULTS Lung epithelial TC1 cell tumors were 84% greater in mice subjected to IH for 28 days compared with room air (RA). In addition, TAMs in IH-exposed tumors exhibited reductions in M1 polarity with a shift toward M2 protumoral phenotype. Although TAMs from tumors harvested from RA-exposed mice increased TC1 migration and extravasation, TAMs from IH-exposed mice markedly enhanced such effects and also promoted proliferative rates and invasiveness of TC1 cells. Proliferative rates of melanoma (B16F10) and TC1 cells exposed to IH either in single culture or in coculture with macrophages (RAW 264.7) increased only when RAW 264.7 macrophages were concurrently present. CONCLUSIONS Our findings support the notion that IH-induced alterations in TAMs participate in the adverse cancer outcomes reported in OSA.
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Affiliation(s)
- Isaac Almendros
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Yang Wang
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Lev Becker
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Frances E. Lennon
- Department of Medicine, Section of Hematology/Oncology, The University of Chicago, Chicago, Illinois
| | - Jiamao Zheng
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Brittney R. Coats
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Kelly S. Schoenfelt
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Alba Carreras
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Fahed Hakim
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Shelley X. Zhang
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
| | - Ramon Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona-IDIBAPS, Barcelona, Spain; and
- CIBER de Enfermedades Respiratorias, Bunyola, Spain
| | - David Gozal
- Department of Pediatrics, Comer Children’s Hospital, Pritzker School of Medicine, and
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555
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Zhu X, Amir E, Singh G, Clemons M, Addison C. Bone-targeted therapy for metastatic breast cancer-Where do we go from here? A commentary from the BONUS 8 meeting. J Bone Oncol 2014; 3:1-4. [PMID: 26909291 PMCID: PMC4723414 DOI: 10.1016/j.jbo.2014.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/06/2014] [Accepted: 01/12/2014] [Indexed: 12/24/2022] Open
Abstract
The annual Bone and The Oncologist New Updates (BONUS 8) conference focuses on the current understanding and dilemmas in the treatment and prevention of bone metastasis in cancer, as well as novel research on bone homeostasis and cancer-induced bone loss. We present commentaries from experts for their own take on where they feel the field of bone-targeted therapies for metastatic breast cancer is moving, or needs to move, if we are to make further progress.
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Affiliation(s)
- Xiaofu Zhu
- Division of Medical Oncology, Ottawa Hospital and Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Eitan Amir
- Division of Medical Oncology and Hematology, University of Toronto and Princess Margaret Hospital, Toronto, Canada
| | - Gurmit Singh
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada
| | - Mark Clemons
- Division of Medical Oncology, Ottawa Hospital and Faculty of Medicine, University of Ottawa, Ottawa, Canada; Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Christina Addison
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada
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556
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Panyi G, Beeton C, Felipe A. Ion channels and anti-cancer immunity. Philos Trans R Soc Lond B Biol Sci 2014; 369:20130106. [PMID: 24493754 DOI: 10.1098/rstb.2013.0106] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The outcome of a malignant disease depends on the efficacy of the immune system to destroy cancer cells. Key steps in this process, for example the generation of a proper Ca(2+) signal induced by recognition of a specific antigen, are regulated by various ion channel including voltage-gated Kv1.3 and Ca(2+)-activated KCa3.1 K(+) channels, and the interplay between Orai and STIM to produce the Ca(2+)-release-activated Ca(2+) (CRAC) current required for T-cell proliferation and function. Understanding the immune cell subset-specific expression of ion channels along with their particular function in a given cell type, and the role of cancer tissue-dependent factors in the regulation of operation of these ion channels are emerging questions to be addressed in the fight against cancer disease. Answering these questions might lead to a better understanding of the immunosuppression phenomenon in cancer tissue and the development of drugs aimed at skewing the distribution of immune cell types towards killing of the tumour cells.
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Affiliation(s)
- Gyorgy Panyi
- Department of Biophysics and Cell Biology, University of Debrecen, , Egyetem ter 1, Life Science Building, Room 2.301, Debrecen, Hungary
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557
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Aurisicchio L, Peruzzi D, Koo G, Wei WZ, La Monica N, Ciliberto G. Immunogenicity and therapeutic efficacy of a dual-component genetic cancer vaccine cotargeting carcinoembryonic antigen and HER2/neu in preclinical models. Hum Gene Ther 2014; 25:121-31. [PMID: 24195644 PMCID: PMC3922413 DOI: 10.1089/hum.2013.103] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 11/05/2013] [Indexed: 12/18/2022] Open
Abstract
Several cancer vaccine efforts have been directed to simultaneously cotarget multiple tumor antigens, with the intent to achieve broader immune responses and more effective control of cancer growth. Genetic cancer vaccines based on in vivo muscle electro-gene-transfer of plasmid DNA (DNA-EGT) and adenoviral vectors represent promising modalities to elicit powerful immune responses against tumor-associated antigens (TAAs) such as carcinoembryonic antigen (CEA) and human epidermal growth factor receptor-2 (HER2)/neu. Combinations of these modalities of immunization (heterologous prime-boost) can induce superior immune reactions as compared with single-modality vaccines. We have generated a dual component-dual target genetic cancer vaccine consisting of a DNA moiety containing equal amounts of two plasmids, one encoding the extracellular and transmembrane domains of HER2 (ECD.TM) and the other encoding CEA fused to the B subunit of Escherichia coli heat-labile toxin (LTB), and of an adenoviral subtype 6 dicistronic vector carrying the same two tumor antigens gene constructs. The CEA/HER2 vaccine was tested in two different CEA/HER2 double-transgenic mouse models and in NOD/scid-DR1 mice engrafted with the human immune system. The immune response was measured by enzyme-linked immunospot assay, flow cytometry, and ELISA. The CEA/HER2 vaccine was able to break immune tolerance against both antigens. Induction of a T cell and antibody immune response was detected in immune-tolerant mice. Most importantly, the vaccine was able to slow the growth of HER2/neu⁺ and CEA⁺ tumors. A significant T cell response was measured in NOD/scid-DR1 mice engrafted with human cord blood cells. In conclusion, the CEA/HER2 genetic vaccine was immunogenic and able to confer significant therapeutic effects. These data warrant the evaluation of this vaccination strategy in human clinical trials.
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Affiliation(s)
- Luigi Aurisicchio
- Istituto di Ricerche di Biologia Molecolare (IRBM), 00040 Pomezia, Rome, Italy
| | - Daniela Peruzzi
- Istituto di Ricerche di Biologia Molecolare (IRBM), 00040 Pomezia, Rome, Italy
| | - Gloria Koo
- Memorial Sloan-Kettering Cancer Center, New York, NY 10021
| | - Wei-Zen Wei
- Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201
| | - Nicola La Monica
- Istituto di Ricerche di Biologia Molecolare (IRBM), 00040 Pomezia, Rome, Italy
| | - Gennaro Ciliberto
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), National Cancer Institute G. Pascale, 80131 Naples, Italy
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558
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Wilmott JS, Haydu LE, Menzies AM, Lum T, Hyman J, Thompson JF, Hersey P, Kefford RF, Scolyer RA, Long GV. Dynamics of Chemokine, Cytokine, and Growth Factor Serum Levels in BRAF-Mutant Melanoma Patients during BRAF Inhibitor Treatment. THE JOURNAL OF IMMUNOLOGY 2014; 192:2505-13. [DOI: 10.4049/jimmunol.1302616] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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559
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Intratumoral CD4+ T lymphodepletion sensitizes poorly immunogenic melanomas to immunotherapy with an OX40 agonist. J Invest Dermatol 2014; 134:1884-1892. [PMID: 24468748 DOI: 10.1038/jid.2014.42] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 12/08/2013] [Accepted: 12/23/2013] [Indexed: 01/08/2023]
Abstract
Previous studies have shown that the antitumor effects of OX40 agonists depend on the immunogenicity of the tumor and that poorly immunogenic tumors such as B16F10 melanomas do not respond to OX40 agonist treatment. In this study, we have shown that intratumoral CD4+ T lymphodepletion sensitized poorly immunogenic B16F10 melanomas to immunotherapy with an OX40 agonist. CD4+ T lymphodepletion dramatically altered the tumor immune microenvironment, making it more susceptible to the antitumor effects of an OX40 agonist by enhancing the accumulation of CD8+ T cells and natural killer (NK) cells in tumor tissue. However, unexpectedly, the number of CD11b+ Gr-1(+) myeloid-derived suppressor cells (MDSCs) within tumor tissues also significantly increased as a result of CD4+ T lymphodepletion. As a countermeasure against CD8+ T-cell accumulation, CCR2-positive CD11b+ Gr-1(int) (monocytic) MDSCs predominantly increased. Treatment with an OX40 agonist under CD4+ T lymphodepletion neither reduced MDSCs nor increased CD8+ T cells and NK cells, but further enhanced the expression of cytotoxic molecules from tumor-infiltrating effector cells. Our results suggest that combined immunotherapy using both an OX40 agonist and CD4+ T lymphodepletion could be a promising therapeutic strategy for poorly immunogenic tumors and might be more effective if further combined with a therapeutic strategy targeting MDSCs.
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560
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Koumarianou A, Christodoulou MI, Patapis P, Papadopoulos I, Liakata E, Giagini A, Stavropoulou A, Poulakaki N, Tountas N, Xiros N, Economopoulos T, Pectasides D, Tsitsilonis OE, Pappa V. The effect of metronomic versus standard chemotherapy on the regulatory to effector T-cell equilibrium in cancer patients. Exp Hematol Oncol 2014; 3:3. [PMID: 24456704 PMCID: PMC3906764 DOI: 10.1186/2162-3619-3-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 01/11/2014] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The host's immune system is crucially involved in cancer development and progression. The ratio of regulatory to effector T-cells, as well as the interplay of T-cells with therapeutic agents, impact on cancer prognosis. The current study aimed to comparatively investigate the effect of metronomic and standard chemotherapy on the number and functionality of peripheral regulatory and effector T-cells in cancer patients. METHODS CD4+CD25+ regulatory and CD4+CD25- effector T-cells were purified from the peripheral blood of 36 cancer patients and co-cultured in the presence of a polyclonal stimulus. The proliferative capacity and frequency of CD4+CD25+/CD4+CD25- T-cells were analysed before and during various chemotherapeutic regimes, by ELISA and flow cytometry, respectively. RESULTS Chemotherapy shifted immune responses in favour of regulatory T-cells. The relative ratio of regulatory to effector T-cells increased, and the T-cell-mediated suppressive activity of regulatory on effector T-cells was augmented. This effect was more profound in metronomic than in standard chemotherapeutic approaches. Moreover, an association between the chemotherapy strategy followed and the mode of action of specific drugs (anti-mitotic, anti-DNA) was revealed. CONCLUSIONS In comparison to standard chemotherapeutic strategies, metronomic approaches, though more patient-friendly, result in a significantly more prominent expansion of regulatory T-cells that aggravate the regulatory to effector T-cell imbalance. Our findings impact on the modulation of chemotherapy-treated patients' anti-tumor immunity and, thus, may be proven useful for selecting the most advantageous drug-delivery strategy, particularly when immunotherapeutics are eventually to be applied.
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Affiliation(s)
- Anna Koumarianou
- Fourth Department of Internal Medicine, Attikon University Hospital, Rimini 1 Street, 12462 Athens, Greece.
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561
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Quail DF, Joyce JA. Microenvironmental regulation of tumor progression and metastasis. Nat Med 2014; 19:1423-37. [PMID: 24202395 DOI: 10.1038/nm.3394] [Citation(s) in RCA: 5171] [Impact Index Per Article: 517.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/09/2013] [Indexed: 02/07/2023]
Abstract
Cancers develop in complex tissue environments, which they depend on for sustained growth, invasion and metastasis. Unlike tumor cells, stromal cell types within the tumor microenvironment (TME) are genetically stable and thus represent an attractive therapeutic target with reduced risk of resistance and tumor recurrence. However, specifically disrupting the pro-tumorigenic TME is a challenging undertaking, as the TME has diverse capacities to induce both beneficial and adverse consequences for tumorigenesis. Furthermore, many studies have shown that the microenvironment is capable of normalizing tumor cells, suggesting that re-education of stromal cells, rather than targeted ablation per se, may be an effective strategy for treating cancer. Here we discuss the paradoxical roles of the TME during specific stages of cancer progression and metastasis, as well as recent therapeutic attempts to re-educate stromal cells within the TME to have anti-tumorigenic effects.
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Affiliation(s)
- Daniela F Quail
- Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
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562
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Mirghorbani M, Van Gool S, Rezaei N. Myeloid-derived suppressor cells in glioma. Expert Rev Neurother 2014; 13:1395-406. [DOI: 10.1586/14737175.2013.857603] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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563
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Terabe M, Berzofsky JA. The immunoregulatory role of type I and type II NKT cells in cancer and other diseases. Cancer Immunol Immunother 2014; 63:199-213. [PMID: 24384834 DOI: 10.1007/s00262-013-1509-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 12/08/2013] [Indexed: 12/26/2022]
Abstract
NKT cells are CD1d-restricted T cells that recognize lipid antigens. They also have been shown to play critical roles in the regulation of immune responses. In the immune responses against tumors, two subsets of NKT cells, type I and type II, play opposing roles and cross-regulate each other. As members of both the innate and adaptive immune systems, which form a network of multiple components, they also interact with other immune components. Here, we discuss the function of NKT cells in tumor immunity and their interaction with other regulatory cells, especially CD4(+)CD25(+)Foxp3(+) regulatory T cells.
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Affiliation(s)
- Masaki Terabe
- Vaccine Branch, Center for Cancer Research, National Cancer Institute, NIH, Building 41-Room D702, 41 Medlars Drive, Bethesda, MD, 20892, USA,
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564
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Pyzer AR, Avigan DE, Rosenblatt J. Clinical trials of dendritic cell-based cancer vaccines in hematologic malignancies. Hum Vaccin Immunother 2014; 10:3125-31. [PMID: 25625926 PMCID: PMC4514037 DOI: 10.4161/21645515.2014.982993] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 09/17/2014] [Accepted: 10/05/2014] [Indexed: 11/19/2022] Open
Abstract
The potential for the immune system to target hematological malignancies is demonstrated in the allogeneic transplant setting, where durable responses can be achieved. However, allogeneic transplantation is associated with significant morbidity and mortality related to graft versus host disease. Cancer immunotherapy has the capacity to direct a specific cytotoxic immune response against cancer cells, particularly residual cancer cells, in order to reduce the likelihood of disease relapse in a more targeted and tolerated manner. Ex vivo dendritic cells can be primed in various ways to present tumor associated antigen to the immune system, in the context of co-stimulatory molecules, eliciting a tumor specific cytotoxic response in patients. Several approaches to prime dendritic cells and overcome the immunosuppressive microenvironment have been evaluated in pre-clinical and early clinical trials with promising results. In this review, we summarize the clinical data evaluating dendritic cell based vaccines for the treatment of hematological malignancies.
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Key Words
- AML, Acute Myeloid Leukemia
- ASCT, Autologous Stem Cell Transplant
- Apo-DC, Apoptotic body loaded- dendritic cells
- CML, Chronic Myeloid Leukemia
- CR, Complete response
- CTLA-4, Cytotoxic T-Lymphocyte Antigen 4
- DC/AML, Dendritic cell Acute Myeloid Leukemia fusion vaccine
- DC/MM, Dendritic cell Multiple Myeloma fusion vaccine
- DNA Deoxyribonucleic acid
- FLT-ITD, Fms-like Tyrosine Kinase with Internal Tandem Duplication
- GMCSF, Granulocyte macrophage colony-stimulating factor
- GVHD, Graft vs Host Disease
- HLA-A*2402, Human Leukocyte antigen A*2402
- IFN, Interferon
- IFNg, Interferon gamma
- IL, Interleukin
- Id, Idiotype
- KLH, Keyhole limpet hemocyanin
- MDS, Myelodysplastic syndrome
- MHC, Major histocompatibility complex
- OS, Overall Survival
- PD-1, Programmed death 1
- PD-L1, Programmed death-ligand 1
- PR, Partial response
- PRR, Pathogen recognition receptor
- RNA, Ribonucleic acid
- SCT, Stem cell transplant
- TGFB, Transforming growth factor β
- TNFα, Tumor necrosis factor α
- VEGF, Vascular endothelial growth factor
- VGPR, Very good partial response
- WT-1, Wilm's tumor suppressor gene 1
- cancer
- dendritic cell
- immunotherapy
- leukemia
- mRNA, mRNA
- myeloma
- pDCs, Plasmacytoid Dendritic cell
- trial
- vaccine
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Affiliation(s)
- Athalia R Pyzer
- Beth Israel Deaconess Medical Center; Harvard Medical School; Boston, MA USA
| | - David E Avigan
- Beth Israel Deaconess Medical Center; Harvard Medical School; Boston, MA USA
| | - Jacalyn Rosenblatt
- Beth Israel Deaconess Medical Center; Harvard Medical School; Boston, MA USA
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565
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Morales JK, Saleem SJ, Martin RK, Saunders BL, Barnstein BO, Faber TW, Pullen NA, Kolawole EM, Brooks KB, Norton SK, Sturgill J, Graham L, Bear HD, Urban JF, Lantz CS, Conrad DH, Ryan JJ. Myeloid-derived suppressor cells enhance IgE-mediated mast cell responses. J Leukoc Biol 2013; 95:643-50. [PMID: 24338630 DOI: 10.1189/jlb.0913510] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mast cells and MDSCs are increased by parasitic infection and tumor growth. We previously demonstrated that enhanced MDSC development in ADAM10 transgenic mice yielded resistance to Nb infection and that coculturing MDSCs and mast cells enhanced cytokine production. In the current work, we show that MDSC-mast cell coculture selectively enhances IgE-mediated cytokine secretion among mast cells, without increasing MDSC cytokine production. This effect was independent of cell contact and elicited by Ly6C(+) and Ly6C/G+ MDSC subsets. These interactions were functionally important. MDSC depletion with the FDA-approved drug gemcitabine exacerbated Nb or Trichinella spiralis infection and reduced mast cell-dependent AHR and lung inflammation. Adoptive transfer of MDSC worsened AHR in WT but not mast cell-deficient Wsh/Wsh mice. These data support the hypothesis that MDSCs enhance mast cell inflammatory responses and demonstrate that this interaction can be altered by an existing chemotherapeutic.
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566
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Tesone AJ, Svoronos N, Allegrezza MJ, Conejo-Garcia JR. Pathological mobilization and activities of dendritic cells in tumor-bearing hosts: challenges and opportunities for immunotherapy of cancer. Front Immunol 2013; 4:435. [PMID: 24339824 PMCID: PMC3857526 DOI: 10.3389/fimmu.2013.00435] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/22/2013] [Indexed: 12/22/2022] Open
Abstract
A common characteristic of solid tumors is the pathological recruitment of immunosuppressive myeloid cells, which in certain tumors includes dendritic cells (DCs). DCs are of particular interest in the field of cancer immunotherapy because they induce potent and highly specific anti-tumor immune responses, particularly in the early phase of tumorigenesis. However, as tumors progress, these cells can be transformed into regulatory cells that contribute to an immunosuppressive microenvironment favoring tumor growth. Therefore, controlling DC phenotype has the potential to elicit effective anti-tumor responses while simultaneously weakening the tumor’s ability to protect itself from immune attack. This review focuses on the dual nature of DCs in the tumor microenvironment, the regulation of DC phenotype, and the prospect of modifying DCs in situ as a novel immunotherapeutic approach.
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Affiliation(s)
- Amelia J Tesone
- Tumor Microenvironment and Metastasis Program, Wistar Institute , Philadelphia, PA , USA
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567
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Shi G, Han J, Liu G, Hao Y, Ma Y, Li T, Wu X, Zhang H, Liu Y, Wang B, Kong Y, Zhou J, Zeng H. Expansion of activated regulatory T cells by myeloid‐specific chemokines via an alternative pathway in CSF of bacterial meningitis patients. Eur J Immunol 2013; 44:420-30. [DOI: 10.1002/eji.201343572] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 09/18/2013] [Accepted: 10/16/2013] [Indexed: 01/10/2023]
Affiliation(s)
- Guangzhi Shi
- Intensive Care UnitBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Junyan Han
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Gang Liu
- Department of Infectious DiseasesBeijing Children's HospitalCapital Medical UniversityBeijing China
| | - Yu Hao
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Yaluan Ma
- Institute of Basic Medical Theory of Chinese MedicineChina Academy of Chinese Medical SciencesBeijing China
| | - Tong Li
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Xueying Wu
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Henghui Zhang
- Peking University People's HospitalPeking University Hepatology InstituteBeijing Key Laboratory of Hepatitis C and Immunotherapy for Liver DiseasesBeijing China
| | - Yanan Liu
- Laboratory Diagnosis CenterBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Beibei Wang
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Yaxian Kong
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Jianxin Zhou
- Intensive Care UnitBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Hui Zeng
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
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568
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Myeloid-Derived Suppressor Cells Protect Mouse Models from Autoimmune Arthritis via Controlling Inflammatory Response. Inflammation 2013; 37:670-7. [DOI: 10.1007/s10753-013-9783-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Abstract
Th17 cells are a subset of CD4(+) effector T cells characterized by expression of the IL-17-family cytokines, IL-17A and IL-17F. Since their discovery nearly a decade ago, Th17 cells have been implicated in the regulation of dozens of immune-mediated inflammatory diseases and cancer. However, attempts to clarify the development and function of Th17 cells in human health and disease have generated as many questions as answers. On one hand, cytokine expression in Th17 cells appears to be remarkably dynamic and is subject to extensive regulation (both positive and negative) in tissue microenvironments. On the other hand, accumulating evidence suggests that the human Th17 subset is a heterogeneous population composed of several distinct pro- and anti-inflammatory subsets. Clearly, Th17 cells as originally conceived no longer neatly fit the long-standing paradigm of stable and irrepressible effector T cell function. Here we review current concepts surrounding human Th17 cells, with an emphasis on their plasticity, heterogeneity, and their many, tissue-specific functions. In spite of the challenges ahead, a comprehensive understanding of Th17 cells and their relationship to human disease is key to ongoing efforts to develop safer and more selective anti-inflammatory medicines.
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570
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Wongkajornsilp A, Wamanuttajinda V, Kasetsinsombat K, Duangsa-ard S, Sa-ngiamsuntorn K, Hongeng S, Maneechotesuwan K. Sunitinib indirectly enhanced anti-tumor cytotoxicity of cytokine-induced killer cells and CD3⁺CD56⁺ subset through the co-culturing dendritic cells. PLoS One 2013; 8:e78980. [PMID: 24232460 PMCID: PMC3827292 DOI: 10.1371/journal.pone.0078980] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/25/2013] [Indexed: 01/11/2023] Open
Abstract
Cytokine-induced killer (CIK) cells have reached clinical trials for leukemia and solid tumors. Their anti-tumor cytotoxicity had earlier been shown to be intensified after the co-culture with dendritic cells (DCs). We observed markedly enhanced anti-tumor cytotoxicity activity of CIK cells after the co-culture with sunitinib-pretreated DCs over that of untreated DCs. This cytotoxicity was reliant upon DC modulation by sunitinib because the direct exposure of CIK cells to sunitinib had no significant effect. Sunitinib promoted Th1-inducing and pro-inflammatory phenotypes (IL-12, IFN-γ and IL-6) in DCs at the expense of Th2 inducing phenotype (IL-13) and regulatory phenotype (PD-L1, IDO). Sunitinib-treated DCs subsequently induced the upregulation of Th1 phenotypic markers (IFN-γ and T-bet) and the downregulation of the Th2 signature (GATA-3) and the Th17 marker (RORC) on the CD3⁺CD56⁺ subset of CIK cells. It concluded that sunitinib-pretreated DCs drove the CD3⁺CD56⁺ subset toward Th1 phenotype with increased anti-tumor cytotoxicity.
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Affiliation(s)
- Adisak Wongkajornsilp
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Valla Wamanuttajinda
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanda Kasetsinsombat
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sunisa Duangsa-ard
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Khanit Sa-ngiamsuntorn
- Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Department of Biochemistry, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Suradej Hongeng
- Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Kittipong Maneechotesuwan
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- * E-mail:
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571
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Thomsen MK, Bakiri L, Hasenfuss SC, Hamacher R, Martinez L, Wagner EF. JUNB/AP-1 controls IFN-γ during inflammatory liver disease. J Clin Invest 2013; 123:5258-68. [PMID: 24200694 DOI: 10.1172/jci70405] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 09/05/2013] [Indexed: 12/27/2022] Open
Abstract
Understanding the molecular pathogenesis of inflammatory liver disease is essential to design efficient therapeutic approaches. In hepatocytes, the dimeric transcription factor c-JUN/AP-1 is a major mediator of cell survival during hepatitis, although functions for other JUN proteins in liver disease are less defined. Here, we found that JUNB was specifically expressed in human and murine immune cells during acute liver injury. We analyzed the molecular function of JUNB in experimental models of hepatitis, including administration of concanavalin A (ConA) or α-galactosyl-ceramide, which induce liver inflammation and injury. Mice specifically lacking JUNB in hepatocytes displayed a mild increase in ConA-induced liver damage. However, targeted deletion of Junb in immune cells and hepatocytes protected against hepatitis in experimental models that involved NK/NKT cells. The absence of JUNB in immune cells decreased IFN-γ expression and secretion from NK and NKT cells, leading to reduced STAT1 pathway activation. Systemic IFN-γ treatment or adenovirus-based IRF1 delivery to Junb-deficient mice restored hepatotoxicity, and we demonstrate that Ifng is a direct transcriptional target of JUNB. These findings demonstrate that JUNB/AP-1 promotes cell death during acute hepatitis by regulating IFN-γ production in NK and NKT cells and thus functionally antagonizes the hepatoprotective function of c-JUN/AP-1 in hepatocytes.
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572
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The significant increase and dynamic changes of the myeloid-derived suppressor cells percentage with chemotherapy in advanced NSCLC patients. Clin Transl Oncol 2013; 16:616-22. [PMID: 24193866 DOI: 10.1007/s12094-013-1125-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/17/2013] [Indexed: 11/27/2022]
Abstract
PURPOSE To investigate the correlations between myeloid-derived suppressor cells (MDSCs) in the peripheral blood and cancer stage, immune function, and chemotherapy. METHODS Percentages of MDSCs (CD11b(+)CD14(-)CD33(+) cells) and lymphocyte subsets in peripheral blood mononuclear cells (PBMCs) of 94 patients with Non-small cell lung cancer (NSCLC) who were treated naïve and 30 healthy individuals were measured. Changes of the MDSCs percentage were further detected in patients with advanced NSCLC treated with systemic chemotherapy. Finally, coculture with CD8(+) cells was developed to determine effect of MDSCs on IFN-γ secretion of T lymphocytes. RESULTS MDSCs percentage of 94 patients with NSCLC was significantly higher than that of 30 healthy subjects (P < 0.05), the percentages were increased with tumor progression, in patients with stage III and IV percentages were significantly higher than those in stage I and II patients (P = 0.013). The MDSCs percentage was negatively related to percentage of CD8(+) cells in the peripheral blood (r = -0.354, n = 38, P = 0.029), and when they were cocultured, IFN-γ secretion of CD8(+) cells was significantly decreased (P < 0.05). In 20 patients with advanced NSCLC who received systemic chemotherapy, nine partial remission (PR) cases got MDSCs percentage significantly decreased (P < 0.001), three stable disease (SD) cases remained invariable (P = 0.307) and eight progressive disease (PD) cases got significantly increased (P = 0.024). CONCLUSION The percentage of MDSCs in the patients was significantly higher than that of the healthy control subjects and it increased with tumor progression partially by inhibiting the CD8(+) cell function. The dynamic changes of MDSCs percentage reflected the efficacy of systemic chemotherapy.
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573
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Ene-Obong A, Clear AJ, Watt J, Wang J, Fatah R, Riches JC, Marshall JF, Chin-Aleong J, Chelala C, Gribben JG, Ramsay AG, Kocher HM. Activated pancreatic stellate cells sequester CD8+ T cells to reduce their infiltration of the juxtatumoral compartment of pancreatic ductal adenocarcinoma. Gastroenterology 2013; 145:1121-32. [PMID: 23891972 PMCID: PMC3896919 DOI: 10.1053/j.gastro.2013.07.025] [Citation(s) in RCA: 399] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 06/24/2013] [Accepted: 07/17/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Pancreatic ductal adenocarcinoma (PDAC) is characterized by a prominent desmoplastic microenvironment that contains many different immune cells. Activated pancreatic stellate cells (PSCs) contribute to the desmoplasia. We investigated whether distinct stromal compartments are differentially infiltrated by different types of immune cells. METHODS We used tissue microarray analysis to compare immune cell infiltration of different pancreaticobiliary diseased tissues (PDAC, ampullary carcinoma, cholangiocarcinoma, mucinous cystic neoplasm, chronic inflammation, and chronic pancreatitis) and juxtatumoral stromal (<100 μm from tumor) and panstromal compartments. We investigated the association between immune infiltrate and patient survival times. We also analyzed T-cell migration and tumor infiltration in LSL-KrasG12D/+; LSL-Trp53R172H/+; Pdx-1-Cre (KPC) mice and the effects of all-trans retinoic acid (ATRA) on these processes. RESULTS Juxtatumoral compartments in PDAC samples from 2 independent groups of patients contained increased numbers of myeloperoxidase(+) and CD68(+) cells compared with panstromal compartments. However, juxtatumoral compartments of PDACs contained fewer CD8(+), FoxP3(+), CD56(+), or CD20(+) cells than panstromal compartments, a distinction absent in ampullary carcinomas and cholangiocarcinomas. Patients with PDACs that had high densities of CD8(+) T cells in the juxtatumoral compartment had longer survival times than patients with lower densities. In KPC mice, administration of ATRA, which renders PSCs quiescent, increased numbers of CD8(+) T cells in juxtatumoral compartments. We found that activated PSCs express cytokines, chemokines, and adhesion molecules that regulate T-cell migration. In vitro migration assays showed that CD8(+) T cells, from patients with PDAC, had increased chemotaxis toward activated PSCs, which secrete CXCL12, compared with quiescent PSCs or tumor cells. These effects could be reversed by knockdown of CXCL12 or treatment of PSCs with ATRA. CONCLUSIONS Based on studies of human PDAC samples and KPC mice, activated PSCs appear to reduce migration of CD8(+) T cells to juxtatumoral stromal compartments, preventing their access to cancer cells. Deregulated signaling by activated PSCs could prevent an effective antitumor immune response.
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Affiliation(s)
- Abasi Ene-Obong
- Centre for Tumour Biology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Andrew J. Clear
- Centre for Hemato-Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Jennifer Watt
- Centre for Tumour Biology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
,Department of Surgery, Barts and the London HPB Centre, The Royal London Hospital, Barts Health NHS Trust, London, E1 1BB, UK.
| | - Jun Wang
- Centre for Molecular Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Rewas Fatah
- Centre for Hemato-Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - John C. Riches
- Centre for Hemato-Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - John F. Marshall
- Centre for Tumour Biology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Joanne Chin-Aleong
- Department of Pathology, Barts and the London HPB Centre, The Royal London Hospital, Barts Health NHS Trust, London, E1 1BB, UK.
| | - Claude Chelala
- Centre for Molecular Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - John G. Gribben
- Centre for Hemato-Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Alan G. Ramsay
- Centre for Hemato-Oncology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - Hemant M. Kocher
- Centre for Tumour Biology, Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
,Department of Surgery, Barts and the London HPB Centre, The Royal London Hospital, Barts Health NHS Trust, London, E1 1BB, UK.
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574
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Abstract
Currently approved treatments for metastatic renal cell carcinoma (RCC) include vascular endothelial growth factor (VEGF)-blocking agents, mammalian target of rapamycin (mTOR) inhibitors, and cytokine therapy. In the near future, we are likely to add immune checkpoint blocking agents to this list. As we develop treatment platforms around each therapeutic class, determining which drug is best for a particular patient becomes increasingly important. At this point, we do not have validated predictive biomarkers for patients with RCC. Here, we discuss the logistical challenges surrounding biomarker development, summarize the current crop of biomarker candidates, and explore potential avenues for the development of more effective predictive tools for patients with advanced RCC.
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Affiliation(s)
- Jesus Garcia-Donas
- Genitourinary Tumors Programme Centro Integral Oncologico Clara Campal CIOCC, Madrid, Spain
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575
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Zhang Y, Cheng S, Zhang M, Zhen L, Pang D, Zhang Q, Li Z. High-infiltration of tumor-associated macrophages predicts unfavorable clinical outcome for node-negative breast cancer. PLoS One 2013; 8:e76147. [PMID: 24098773 PMCID: PMC3786995 DOI: 10.1371/journal.pone.0076147] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 08/20/2013] [Indexed: 12/14/2022] Open
Abstract
The tumor microenvironment is composed of tumor cells, fibroblasts, endothelial cells and infiltrating immune cells, which may inhibit or promote tumor growth and progression. The objectives of this retrospective study were to characterize the density of tumor-associated macrophages (TAMs) in breast cancer, and to correlate the density of TAMs with clinicopathological parameters. Paraffin-embedded specimens and clinicopathological data, including up to 5 years follow-up information, were obtained from 172 breast cancer patients. Immunohistochemical staining for CD68 (marker for macrophages) was performed and evaluated in a blinded fashion. We found that TAMs were significantly frequent in high histopathological grade breast cancer patients. Breast cancer patients with a high density of TAMs had significantly lower rates of disease-free survival and 5-year overall survival than patients with low density of TAMs. Furthermore, high-infiltration of TAMs indicated worse survival rate for patients with node-negative breast cancer. In conclusion, the number of TAMs in the tumor stroma is an independent predictor of survival time for breast cancer patients. High-infiltration of TAMs is a significant unfavorable prognostic factor for patients with invasive breast cancer and, as such, is a potentially useful prognostic marker for breast cancer.
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Affiliation(s)
- Yue Zhang
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Shaoqiang Cheng
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Mingyan Zhang
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Lina Zhen
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Da Pang
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Qingyuan Zhang
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
- * E-mail: (QYZ); (ZL)
| | - Zhigao Li
- The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
- * E-mail: (QYZ); (ZL)
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576
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Merchant JL, Saqui-Salces M. Inhibition of Hedgehog signaling in the gastrointestinal tract: targeting the cancer microenvironment. Cancer Treat Rev 2013; 40:12-21. [PMID: 24007940 DOI: 10.1016/j.ctrv.2013.08.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 08/02/2013] [Accepted: 08/06/2013] [Indexed: 02/08/2023]
Abstract
This review summarizes emerging information regarding the Hedgehog (Hh) signaling pathway during neoplastic transformation in the gastrointestinal tract. Although there is a role for the well-established canonical pathway in which Hedgehog ligands interact with their receptor Patched, there is sufficient evidence that downstream components of the Hh pathway, e.g., Gli1, are hijacked by non-Hh signaling pathways to promote the conversion of the epithelium to dysplasia and carcinoma. We review the canonical pathway and involvement of primary cilia, and then focus on current evidence for Hh signaling in luminal bowel cancers as well as accessory organs, i.e., liver, pancreas and biliary ducts. We conclude that targeting the Hh pathway with small molecules, nutriceuticals and other mechanisms will likely require a combination of inhibitors that target Gli transcription factors in addition to canonical modulators such as Smoothened.
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Affiliation(s)
- Juanita L Merchant
- Departments of Internal Medicine and Molecular and Integrative Physiology, Division of Gastroenterology, University of Michigan, United States.
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577
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Monjazeb AM, Zamora AE, Grossenbacher SK, Mirsoian A, Sckisel GD, Murphy WJ. Immunoediting and antigen loss: overcoming the achilles heel of immunotherapy with antigen non-specific therapies. Front Oncol 2013; 3:197. [PMID: 23898464 PMCID: PMC3724213 DOI: 10.3389/fonc.2013.00197] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 07/14/2013] [Indexed: 12/16/2022] Open
Abstract
Cancer immunotherapy has emerged as a mainstream therapy option in the battle against cancer. Pre-clinical data demonstrates the ability of immunotherapy to harness the immune system to fight disseminated malignancy. Clinical translation has failed to recapitulate the promising results of pre-clinical studies although there have been some successes. In this review we explore some of the short-comings of cancer immunotherapy that have limited successful clinical translation. We will give special consideration to what we consider the most formidable hurdle to successful cancer immunotherapy: tumor-induced immune suppression and immune escape. We will discuss the need for antigen-specific immune responses for successful immunotherapy but also consider the need for antigen specificity as an Achilles heel of immunotherapy given tumor heterogeneity, immune editing, and antigen loss. Finally, we will discuss how combinatorial strategies may overcome some of the pitfalls of antigen specificity and highlight recent studies from our lab which suggest that the induction of antigen non-specific immune responses may also produce robust anti-tumor effects and bypass the need for antigen specificity.
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Affiliation(s)
- Arta Monir Monjazeb
- Department of Radiation Oncology, Comprehensive Cancer Center, University of California at Davis Medical Center , Sacramento, CA , USA
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578
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Lakshmi Narendra B, Eshvendar Reddy K, Shantikumar S, Ramakrishna S. Immune system: a double-edged sword in cancer. Inflamm Res 2013; 62:823-34. [PMID: 23868500 DOI: 10.1007/s00011-013-0645-9] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 06/27/2013] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE The objective of the review is to examine the role of innate and adaptive immune cells in cancer. INTRODUCTION Immune system functions as a host defensive mechanism protecting against invading pathogens and transformed cells, including cancer. However, a body of research carried out over the last few decades has disclosed the unexpected role of immune system in fostering the tumor growth. METHODS A computer-based online search was performed in the PubMed, Scopus and Web of Science databases for articles published, concerning natural killer (NK) cells, Macrophages, CD4+ and CD8+ T cells with relevance to cancer. After finding relevant articles within these search limits, a manual search was conducted through the references from these articles. RESULTS AND CONCLUSIONS This review summarizes the role of immune system in Immunosurveillance and Immunoediting. It then focused mainly on role of macrophages, regulatory T cells (Treg), TH17 cells and on the immunosuppressive mechanisms, which facilitate immune evasion of tumor cells. Our results shows that, immune cells, such as CD8+ cytotoxic T lymphocytes (CTL), CD4+ T helper (TH)1 cells and NK cells along with their characteristic cytokine interferon (IFN)-γ, function as major antitumor effector cells. Whereas CD4+TH2 cells, myeloid-derived suppressor cells (MDSCs) and their derived cytokines function as dominant tumor-promoting forces. In contrast to these cells, macrophages, Treg, and TH17 cells show a dual effect in cancer. Thus, it appears that most components of the immune system are potentially endowed with dual functions i.e., promoting tumor development on the one hand and restraining tumor development on the other and hence immune system can be considered as a double-edged sword in cancer.
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Affiliation(s)
- Bodduluru Lakshmi Narendra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, 500037 Hyderabad, India
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579
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Turning Tumors into Vaccines: Co-opting the Innate Immune System. Immunity 2013; 39:27-37. [DOI: 10.1016/j.immuni.2013.07.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 07/10/2013] [Indexed: 02/07/2023]
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580
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Pio R, Ajona D, Lambris JD. Complement inhibition in cancer therapy. Semin Immunol 2013; 25:54-64. [PMID: 23706991 DOI: 10.1016/j.smim.2013.04.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 04/13/2013] [Indexed: 02/08/2023]
Abstract
For decades, complement has been recognized as an effector arm of the immune system that contributes to the destruction of tumor cells. In fact, many therapeutic strategies have been proposed that are based on the intensification of complement-mediated responses against tumors. However, recent studies have challenged this paradigm by demonstrating a tumor-promoting role for complement. Cancer cells seem to be able to establish a convenient balance between complement activation and inhibition, taking advantage of complement initiation without suffering its deleterious effects. Complement activation may support chronic inflammation, promote an immunosuppressive microenvironment, induce angiogenesis, and activate cancer-related signaling pathways. In this context, inhibition of complement activation would be a therapeutic option for treating cancer. This concept is relatively new and deserves closer attention. In this article, we summarize the mechanisms of complement activation on cancer cells, the cancer-promoting effect of complement initiation, and the rationale behind the use of complement inhibition as a therapeutic strategy against cancer.
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Affiliation(s)
- Ruben Pio
- Oncology Division, Center for Applied Medical Research-CIMA, Pamplona, Spain. rpio.@unav.es
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581
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582
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Depletion of regulatory T cells in a mouse experimental glioma model through anti-CD25 treatment results in the infiltration of non-immunosuppressive myeloid cells in the brain. Clin Dev Immunol 2013; 2013:952469. [PMID: 23710206 PMCID: PMC3655451 DOI: 10.1155/2013/952469] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/02/2013] [Accepted: 04/03/2013] [Indexed: 12/31/2022]
Abstract
The recruitment and activation of regulatory T cells (Tregs) in the micro-environment of malignant brain tumors has detrimental effects on antitumoral immune responses. Hence, local elimination of Tregs within the tumor micro-environment represents a highly valuable tool from both a fundamental and clinical perspective. In the syngeneic experimental GL261 murine glioma model, Tregs were prophylactically eliminated through treatment with PC61, an anti-CD25 mAb. This resulted in specific elimination of CD4+CD25hiFoxp3+ Treg within brain-infiltrating lymphocytes and complete protection against subsequent orthotopic GL261 tumor challenge. Interestingly, PC61-treated mice also showed a pronounced infiltration of CD11b+ myeloid cells in the brain. Phenotypically, these cells could not be considered as Gr-1+ myeloid-derived suppressor cells (MDSC) but were identified as F4/80+ macrophages and granulocytes.
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583
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Role of Th17 cells in the pathogenesis of CNS inflammatory demyelination. J Neurol Sci 2013; 333:76-87. [PMID: 23578791 DOI: 10.1016/j.jns.2013.03.002] [Citation(s) in RCA: 201] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 02/19/2013] [Accepted: 03/04/2013] [Indexed: 12/30/2022]
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS). The etiology of MS is not well understood, but it is believed that myelin-specific CD4(+) T cells play a central role in initiating and orchestrating CNS inflammation. In this scenario, CD4(+) T cells, activated in the periphery, infiltrate the CNS, where, by secreting cytokines and chemokines, they start an inflammatory cascade. Given the central role of CD4(+) T cells in CNS autoimmunity, they have been studied extensively, principally by using experimental autoimmune encephalomyelitis (EAE), an animal model of MS. In the late 1980s, CD4(+) T cells, based on their cytokine production, were divided into two helper lineages, Th1 and Th2 cells. It was postulated that Th1 cells, which produce IFN-γ, mediate inflammation of the CNS in MS/EAE, while Th2 cells, which produce IL-4, have a beneficial effect in disease, because of their antagonistic effect on Th1 cells. The Th1/Th2 paradigm remained the prevailing view of MS/EAE pathogenesis until 2005, when a new lineage, Th17, was discovered. In a relatively short period of time it became apparent that Th17 cells, named after their hallmark cytokine, IL-17A, play a crucial role in many inflammatory diseases, including EAE, and likely in MS as well. The Th17 paradigm developed rapidly, initiating the debate of whether Th1 cells contribute to EAE/MS pathogenesis at all, or if they might even have a protective role due to their antagonistic effects on Th17 cells. Numerous findings support the view that Th17 cells play an essential role in autoimmune CNS inflammation, perhaps mainly in the initial phases of disease. Th1 cells likely contribute to pathogenesis, with their role possibly more pronounced later in disease. Hence, the current view on the role of Th cells in MS/EAE pathogenesis can be called the Th17/Th1 paradigm. It is certain that Th17 cells will continue to be the focus of intense investigation aimed at elucidating the pathogenesis of CNS autoimmunity.
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584
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Kahlert C, Kalluri R. Exosomes in tumor microenvironment influence cancer progression and metastasis. J Mol Med (Berl) 2013; 91:431-7. [PMID: 23519402 PMCID: PMC4073669 DOI: 10.1007/s00109-013-1020-6] [Citation(s) in RCA: 669] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 02/12/2013] [Accepted: 03/04/2013] [Indexed: 12/21/2022]
Abstract
Exosomes are small membrane vesicles of endocytic origin with a size of 50-100 nm. They can contain microRNAs, mRNAs, DNA fragments, and proteins, which are shuttled from a donor cell to recipient cells. Many different cell types including immune cells, mesenchymal cells, and cancer cells release exosomes. There is emerging evidence that cancer-derived exosomes contribute to the recruitment and reprogramming of constituents associated with tumor environment. Here, we discuss different mechanisms associated with biogenesis, payload, and transport of exosomes. We highlight the functional relevance of exosomes in cancer, as related to tumor microenvironment, tumor immunology, angiogenesis, and metastasis. Exosomes may exert an immunosuppressive function as well as trigger an anti-tumor response by presenting tumor antigens to dendritic cells. Exosomes may serve as cancer biomarkers and aid in the treatment of cancer.
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Affiliation(s)
- Christoph Kahlert
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Raghu Kalluri
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, Texas
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585
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Silva JM, Videira M, Gaspar R, Préat V, Florindo HF. Immune system targeting by biodegradable nanoparticles for cancer vaccines. J Control Release 2013; 168:179-99. [PMID: 23524187 DOI: 10.1016/j.jconrel.2013.03.010] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 01/08/2023]
Abstract
The concept of therapeutic cancer vaccines is based on the activation of the immune system against tumor cells after the presentation of tumor antigens. Nanoparticles (NPs) have shown great potential as delivery systems for cancer vaccines as they potentiate the co-delivery of tumor-associated antigens and adjuvants to dendritic cells (DCs), insuring effective activation of the immune system against tumor cells. In this review, the immunological mechanisms behind cancer vaccines, including the role of DCs in the stimulation of T lymphocytes and the use of Toll-like receptor (TLR) ligands as adjuvants will be discussed. An overview of each of the three essential components of a therapeutic cancer vaccine - antigen, adjuvant and delivery system - will be provided with special emphasis on the potential of particulate delivery systems for cancer vaccines, in particular those made of biodegradable aliphatic polyesters, such as poly(lactic-co-glycolic acid) (PLGA) and poly-ε-caprolactone (PCL). Some of the factors that can influence NP uptake by DCs, including size, surface charge, surface functionalization and route of administration, will also be considered.
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Affiliation(s)
- Joana M Silva
- iMed.UL, Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
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586
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Foulds GA, Radons J, Kreuzer M, Multhoff G, Pockley AG. Influence of tumors on protective anti-tumor immunity and the effects of irradiation. Front Oncol 2013; 3:14. [PMID: 23378947 PMCID: PMC3561630 DOI: 10.3389/fonc.2013.00014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/15/2013] [Indexed: 12/20/2022] Open
Abstract
Innate and adaptive immunity plays important roles in the development and progression of cancer and it is becoming apparent that tumors can influence the induction of potentially protective responses in a number of ways. The prevalence of immunoregulatory T cell populations in the circulation and tumors of patients with cancer is increased and the presence of these cells appears to present a major barrier to the induction of tumor immunity. One aspect of tumor-mediated immunoregulation which has received comparatively little attention is that which is directed toward natural killer (NK) cells, although evidence that the phenotype and function of NK cell populations are modified in patients with cancer is accumulating. Although the precise mechanisms underlying these localized and systemic immunoregulatory effects remain unclear, tumor-derived factors appear, in part at least, to be involved. The effects could be manifested by an altered function and/or via an influence on the migratory properties of individual cell subsets. A better insight into endogenous immunoregulatory mechanisms and the capacity of tumors to modify the phenotype and function of innate and adaptive immune cells might assist the development of new immunotherapeutic approaches and improve the management of patients with cancer. This article reviews current knowledge relating to the influence of tumors on protective anti-tumor immunity and considers the potential influence that radiation-induced effects might have on the prevalence, phenotype, and function of innate and adaptive immune cells in patients with cancer.
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Affiliation(s)
- Gemma A Foulds
- Department of Oncology, The Medical School, The University of Sheffield Sheffield, UK ; Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München Munich, Germany
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