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Metropulos AE, Munshi HG, Principe DR. The difficulty in translating the preclinical success of combined TGFβ and immune checkpoint inhibition to clinical trial. EBioMedicine 2022; 86:104380. [PMID: 36455409 PMCID: PMC9706619 DOI: 10.1016/j.ebiom.2022.104380] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/29/2022] Open
Abstract
Immune checkpoint inhibitors (ICIs) have transformed the treatment paradigm for solid tumors. However, even in cancers generally considered ICI-sensitive, responses can vary significantly. Thus, there is an ever-increasing interest in identifying novel means of improving therapeutic responses, both for cancers in which ICIs are indicated and those for which they have yet to show significant anti-tumor activity. To this end, Transforming Growth Factor β (TGFβ) signaling is emerging as an important barrier to the efficacy of ICIs. Accordingly, several preclinical studies now support the use of combined TGFβ and immune checkpoint blockade, with near-uniform positive results across a wide range of tumor types. However, as these approaches have started to emerge in clinical trials, the addition of TGFβ inhibitors has often failed to show a meaningful benefit beyond the current generation of ICIs alone. Here, we summarize landmark clinical studies exploring combined TGFβ and immune checkpoint blockade. These studies not only reinforce the difficulty in translating results from rodents to clinical trials in immune-oncology but also underscore the need to re-evaluate the design of trials exploring this approach, incorporating both mechanism-driven combination strategies and novel, predictive biomarkers to identify the patients most likely to derive clinical benefit.
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Affiliation(s)
| | - Hidayatullah G Munshi
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Jesse Brown VA Medical Center, Chicago, IL, USA.
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2
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Chandran E, Meininger L, Karzai F, Madan RA. Signaling new therapeutic opportunities: cytokines in prostate cancer. Expert Opin Biol Ther 2022; 22:1233-1243. [PMID: 35930001 DOI: 10.1080/14712598.2022.2108701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Despite FDA approval of sipuleucel-T in 2010, endeavors to use immune checkpoint inhibitors in unselected prostate cancer patients have not improved clinical outcomes. These efforts include studies with anti-PD1/PD-L1 and anti-CTLA-4 alone and in combination with existing standards of care. These strategies are generally T-cell centric and disregard the broader complex and pleiotropic components of the prostate cancer tumor microenvironment such as natural killer cells, myeloid-derived suppressor cells and tumor associated macrophages. AREAS COVERED We performed an online literature search and undertook a review of existing pre-clinical and clinical literature for cytokine-based therapy relating to prostate cancer, specifically on interleukin (IL)-2, IL-15, IL-12, IL-23, IL-8 and transforming growth factor (TGF)-β. EXPERT OPINION Cytokine-based therapies present an alternative immune strategy to target the pleiotropic prostate cancer tumor microenvironment beyond T-cells. Future immunotherapy strategies in prostate cancer should address these immune cell populations which may play more important roles in the prostate cancer tumor microenvironment.
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Affiliation(s)
- Elias Chandran
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Luke Meininger
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Fatima Karzai
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ravi A Madan
- Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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3
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Lang F, Schrörs B, Löwer M, Türeci Ö, Sahin U. Identification of neoantigens for individualized therapeutic cancer vaccines. Nat Rev Drug Discov 2022; 21:261-282. [PMID: 35105974 PMCID: PMC7612664 DOI: 10.1038/s41573-021-00387-y] [Citation(s) in RCA: 150] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2021] [Indexed: 02/07/2023]
Abstract
Somatic mutations in cancer cells can generate tumour-specific neoepitopes, which are recognized by autologous T cells in the host. As neoepitopes are not subject to central immune tolerance and are not expressed in healthy tissues, they are attractive targets for therapeutic cancer vaccines. Because the vast majority of cancer mutations are unique to the individual patient, harnessing the full potential of this rich source of targets requires individualized treatment approaches. Many computational algorithms and machine-learning tools have been developed to identify mutations in sequence data, to prioritize those that are more likely to be recognized by T cells and to design tailored vaccines for every patient. In this Review, we fill the gaps between the understanding of basic mechanisms of T cell recognition of neoantigens and the computational approaches for discovery of somatic mutations and neoantigen prediction for cancer immunotherapy. We present a new classification of neoantigens, distinguishing between guarding, restrained and ignored neoantigens, based on how they confer proficient antitumour immunity in a given clinical context. Such context-based differentiation will contribute to a framework that connects neoantigen biology to the clinical setting and medical peculiarities of cancer, and will enable future neoantigen-based therapies to provide greater clinical benefit.
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Affiliation(s)
- Franziska Lang
- TRON Translational Oncology, Mainz, Germany
- Faculty of Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | | | | | | | - Ugur Sahin
- BioNTech, Mainz, Germany.
- University Medical Center, Johannes Gutenberg University, Mainz, Germany.
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4
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Kharbanda A, Tran P, Zhang L, Leung YK, Li HY, Frett B. Discovery of 4-aminoquinolines as highly selective TGFβR1 inhibitors with an attenuated MAP4K4 profile for potential applications in immuno-oncology. Eur J Med Chem 2021; 225:113763. [PMID: 34419892 DOI: 10.1016/j.ejmech.2021.113763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 11/19/2022]
Abstract
The tumor microenvironment contains high concentrations of TGFβ, a crucial immunosuppressive cytokine. TGFβ stimulates immune escape by promoting peripheral immune tolerance to avoid tumoricidal attack. Small-molecule inhibitors of TGFβR1 are a prospective method for next-generation immunotherapies. In the present study, we identified selective 4-aminoquinoline-based inhibitors of TGFβR1 through structural and rational-based design strategies. This led to the identification of compound 4i, which was found to be selective for TGFβR1 with the exception of MAP4K4 in the kinase profiling assay. The compound was then further optimized to remove MAP4K4 activity, since MAP4K4 is vital for proper T-cell function and its inhibition could exacerbate tumor immunosuppression. Optimization efforts led to compound 4s that inhibited TGFβR1 at an IC50 of 0.79 ± 0.19 nM with 2000-fold selectivity against MAP4K4. Compound 4s represents a highly selective TGFβR1 inhibitor that has potential applications in immuno-oncology.
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Affiliation(s)
- Anupreet Kharbanda
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Phuc Tran
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Lingtian Zhang
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Yuet-Kin Leung
- Department of Pharmacology & Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Hong-Yu Li
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
| | - Brendan Frett
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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5
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Principe DR, Timbers KE, Atia LG, Koch RM, Rana A. TGFβ Signaling in the Pancreatic Tumor Microenvironment. Cancers (Basel) 2021; 13:5086. [PMID: 34680235 PMCID: PMC8533869 DOI: 10.3390/cancers13205086] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 12/27/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is associated with poor clinical outcomes, largely attributed to incomplete responses to standard therapeutic approaches. Recently, selective inhibitors of the Transforming Growth Factor β (TGFβ) signaling pathway have shown early promise in the treatment of PDAC, particularly as a means of augmenting responses to chemo- and immunotherapies. However, TGFβ is a potent and pleiotropic cytokine with several seemingly paradoxical roles within the pancreatic tumor microenvironment (TME). Although TGFβ signaling can have potent tumor-suppressive effects in epithelial cells, TGFβ signaling also accelerates pancreatic tumorigenesis by enhancing epithelial-to-mesenchymal transition (EMT), fibrosis, and the evasion of the cytotoxic immune surveillance program. Here, we discuss the known roles of TGFβ signaling in pancreatic carcinogenesis, the biologic consequences of the genetic inactivation of select components of the TGFβ pathway, as well as past and present attempts to advance TGFβ inhibitors in the treatment of PDAC patients.
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Affiliation(s)
- Daniel R. Principe
- Medical Scientist Training Program, University of Illinois College of Medicine, Chicago, IL 60612, USA
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60607, USA; (K.E.T.); (L.G.A.); (R.M.K.)
| | - Kaytlin E. Timbers
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60607, USA; (K.E.T.); (L.G.A.); (R.M.K.)
| | - Luke G. Atia
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60607, USA; (K.E.T.); (L.G.A.); (R.M.K.)
| | - Regina M. Koch
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60607, USA; (K.E.T.); (L.G.A.); (R.M.K.)
| | - Ajay Rana
- Jesse Brown Veterans Affairs Hospital, Chicago, IL 60612, USA
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6
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Tubin S, Khan MK, Gupta S, Jeremic B. Biology of NSCLC: Interplay between Cancer Cells, Radiation and Tumor Immune Microenvironment. Cancers (Basel) 2021; 13:775. [PMID: 33673332 PMCID: PMC7918834 DOI: 10.3390/cancers13040775] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
The overall prognosis and survival of non-small cell lung cancer (NSCLC) patients remain poor. The immune system plays an integral role in driving tumor control, tumor progression, and overall survival of NSCLC patients. While the tumor cells possess many ways to escape the immune system, conventional radiotherapy (RT) approaches, which are directly cytotoxic to tumors, can further add additional immune suppression to the tumor microenvironment by destroying many of the lymphocytes that circulate within the irradiated tumor environment. Thus, the current immunogenic balance, determined by the tumor- and radiation-inhibitory effects is significantly shifted towards immunosuppression, leading to poor clinical outcomes. However, newer emerging evidence suggests that tumor immunosuppression is an "elastic process" that can be manipulated and converted back into an immunostimulant environment that can actually improve patient outcome. In this review we will discuss the natural immunosuppressive effects of NSCLC cells and conventional RT approaches, and then shift the focus on immunomodulation through novel, emerging immuno- and RT approaches that promise to generate immunostimulatory effects to enhance tumor control and patient outcome. We further describe some of the mechanisms by which these newer approaches are thought to be working and set the stage for future trials and additional preclinical work.
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Affiliation(s)
- Slavisa Tubin
- MedAustron Ion Therapy Center, Marie Curie-Straße 5, 2700 Wiener Neustadt, Austria
| | - Mohammad K. Khan
- Department of Radiation Oncology, Winship Cancer Institute, Emory University School of Medicine, 1365-C Clifton Road, Atlanta, GA 30322, USA;
| | - Seema Gupta
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA;
| | - Branislav Jeremic
- Research Institute of Clinical Medicine, 13 Tevdore Mgdveli, Tbilisi 0112, Georgia;
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7
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Tu Y, Han J, Dong Q, Chai R, Li N, Lu Q, Xiao Z, Guo Y, Wan Z, Xu Q. TGF-β2 is a Prognostic Biomarker Correlated with Immune Cell Infiltration in Colorectal Cancer: A STROBE-compliant article. Medicine (Baltimore) 2020; 99:e23024. [PMID: 33181667 PMCID: PMC7668458 DOI: 10.1097/md.0000000000023024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Transforming growth factor-beta (TGF-β2) is an important cytokine regulating immune cell function. However, whether TGF-β2 controls the invasion of colorectal cancer (CRC) by immune cells is unknown. Therefore, we evaluated the expression of TGF-β2 using multiple databases and determined the relationship between TGF-β2 expression and tumor immune infiltration defined by a set of genetic markers. The analysis demonstrated that the expression of TGF-β2 is closely related to the outcome of many cancers, and this correlation was particularly strong in CRC. In addition, the increased expression of TGF-β2 was significantly associated with the expression of various markers of specific immune cell subpopulations, and overexpression of TGF-β2 was closely related to the prognosis of colon cancer patients. Moreover, TGF-β2 was related to the prognosis and infiltration of the tumor by immune cells in CRC patients. The obtained results indicate that TGF-β2 is a critical factor regulating the recruitment of immune cells and controls their infiltration into colorectal tumors. Thus, high expression of TGF-β2 not only facilitates the prognosis in CRC patients, but also may provide a new target for the treatment of CRC.
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Affiliation(s)
- Yifeng Tu
- Department of Pathology, College of Basic Medical, Sciences, Shenyang Medical College, Shenyang, Liaoning
| | - Junjun Han
- Graduate Department, BengBu Medical College, Bengbu, Anhui
| | - Quanjin Dong
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medica College), Hangzhou, Zhejiang
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medica College), Hangzhou, Zhejiang
| | - Na Li
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's
| | - Qiliang Lu
- Medical Department, Qingdao University, Qingdao, Shandong 266071, P.R. China
| | - Zunqiang Xiao
- The Second Clinical Medical Department, Zhejiang Chinese Medical University
| | - Yang Guo
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang
| | - Ziang Wan
- Zhejiang Provincial People's Hospital
| | - Qiuran Xu
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's
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8
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Wu M, Tong CWS, Yan W, To KKW, Cho WCS. The RNA Binding Protein HuR: A Promising Drug Target for Anticancer Therapy. Curr Cancer Drug Targets 2020; 19:382-399. [PMID: 30381077 DOI: 10.2174/1568009618666181031145953] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/24/2018] [Accepted: 10/18/2018] [Indexed: 02/07/2023]
Abstract
The stability of mRNA is one of the key factors governing the regulation of eukaryotic gene expression and function. Human antigen R (HuR) is an RNA-binding protein that regulates the stability, translation, and nucleus-to-cytoplasm shuttling of its target mRNAs. While HuR is normally localized within the nucleus, it has been shown that HuR binds mRNAs in the nucleus and then escorts the mRNAs to the cytoplasm where HuR protects them from degradation. It contains several RNA recognition motifs, which specifically bind to adenylate and uridylate-rich regions within the 3'-untranslated region of the target mRNA to mediate its effect. Many of the HuR target mRNAs encode proteins important for cell growth, tumorigenesis, angiogenesis, tumor inflammation, invasion and metastasis. HuR overexpression is known to correlate well with high-grade malignancy and poor prognosis in many tumor types. Thus, HuR has emerged as an attractive drug target for cancer therapy. Novel small molecule HuR inhibitors have been identified by high throughput screening and new formulations for targeted delivery of HuR siRNA to tumor cells have been developed with promising anticancer activity. This review summarizes the significant role of HuR in cancer development, progression, and poor treatment response. We will discuss the potential and challenges of targeting HuR therapeutically.
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Affiliation(s)
- Mingxia Wu
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Christy W S Tong
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Wei Yan
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Kenneth K W To
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - William C S Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong
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9
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Xiao Z, Hu L, Yang L, Wang S, Gao Y, Zhu Q, Yang G, Huang D, Xu Q. TGFβ2 is a prognostic-related biomarker and correlated with immune infiltrates in gastric cancer. J Cell Mol Med 2020; 24:7151-7162. [PMID: 32530106 PMCID: PMC7339175 DOI: 10.1111/jcmm.15164] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 01/09/2020] [Accepted: 02/01/2020] [Indexed: 12/23/2022] Open
Abstract
TGFβ2 is an essential regulator of immune cell functionality, but the mechanisms whereby it drives immune infiltration in gastric cancer remain uncertain. The Oncomine and Tumor Immunoassay Resource (TIMER) databases were used for assessing the expression of TGFβ2, after which TIMER was used to explore the relationship between TGFβ2 and tumour immune infiltration. Finally, we assessed how TGFβ2 expression correlated with the expression of a set of marker genes associated with immune infiltration using TIMER and GEPIA. We determined TGFβ2 expression to be significantly correlated with outcome in multiple types of cancer in the Cancer Genome Atlas (TCGA), with the effect being particularly pronounced in gastric cancer. Furthermore, elevated TGFβ2 expression was found to be significantly correlated with gastric cancer N staging, and with the expression of a variety of immune markers associated with particular immune cell subsets. These results indicate that TGFΒ2 is associated with patient outcome and tumour immune cell infiltration in multiple cancer types. This suggests that TGFβ2 is a key factor which governs immune cell recruitment to gastric cancer tumours, potentially playing a vital role in governing immune cell infiltration and thus representing a valuable prognostic biomarker in gastric cancer patients.
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Affiliation(s)
- Zunqiang Xiao
- The Second Clinical Medical College of Zhejiang, Chinese Medical University, Hangzhou, Zhejiang, China
| | - Linjun Hu
- The Medical College of Qingdao University, Qingdao, China
| | - Liu Yang
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, China
| | - Sheng Wang
- The Second Clinical Medical College of Zhejiang, Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yuling Gao
- Department of Genetic laboratory, Shaoxing Women and Children Hospital, Shaoxing, China
| | - Qiaojuan Zhu
- The Second Clinical Medical College of Zhejiang, Chinese Medical University, Hangzhou, Zhejiang, China
| | - Guo Yang
- Graduate Department, Bengbu Medical College, Bengbu, China
| | - Dongsheng Huang
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, China
| | - Qiuran Xu
- The Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, China
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10
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Kaminska B, Cyranowski S. Recent Advances in Understanding Mechanisms of TGF Beta Signaling and Its Role in Glioma Pathogenesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1202:179-201. [PMID: 32034714 DOI: 10.1007/978-3-030-30651-9_9] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Transforming growth factor beta (TGF-β) signaling is involved in the regulation of proliferation, differentiation and survival/or apoptosis of many cells, including glioma cells. TGF-β acts via specific receptors activating multiple intracellular pathways resulting in phosphorylation of receptor-regulated Smad2/3 proteins that associate with the common mediator, Smad4. Such complex translocates to the nucleus, binds to DNA and regulates transcription of many genes. Furthermore, TGF-β-activated kinase-1 (TAK1) is a component of TGF-β signaling and activates mitogen-activated protein kinase (MAPK) cascades. Negative regulation of TGF-β/Smad signaling may occur through the inhibitory Smad6/7. While genetic alterations in genes related to TGF-β signaling are relatively rare in gliomas, the altered expression of those genes is a frequent event. The increased expression of TGF-β1-3 correlates with a degree of malignancy of human gliomas. TGF-β may contribute to tumor pathogenesis in many ways: by direct support of tumor growth, by maintaining self-renewal of glioma initiating stem cells and inhibiting anti-tumor immunity. Glioma initiating cells are dedifferentiated cells that retain many stem cell-like properties, play a role in tumor initiation and contribute to its recurrence. TGF-β1,2 stimulate expression of the vascular endothelial growth factor as well as the plasminogen activator inhibitor and some metalloproteinases that are involved in vascular remodeling, angiogenesis and degradation of the extracellular matrix. Inhibitors of TGF-β signaling reduce viability and invasion of gliomas in animal models and show a great promise as novel, potential anti-tumor therapeutics.
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Affiliation(s)
- Bozena Kaminska
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland. .,Postgraduate School of Molecular Medicine, Warsaw Medical University, Warsaw, Poland.
| | - Salwador Cyranowski
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Warsaw Medical University, Warsaw, Poland
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Morrot A, da Fonseca LM, Salustiano EJ, Gentile LB, Conde L, Filardy AA, Franklim TN, da Costa KM, Freire-de-Lima CG, Freire-de-Lima L. Metabolic Symbiosis and Immunomodulation: How Tumor Cell-Derived Lactate May Disturb Innate and Adaptive Immune Responses. Front Oncol 2018; 8:81. [PMID: 29629338 PMCID: PMC5876249 DOI: 10.3389/fonc.2018.00081] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/09/2018] [Indexed: 12/14/2022] Open
Abstract
The tumor microenvironment (TME) is composed by cellular and non-cellular components. Examples include the following: (i) bone marrow-derived inflammatory cells, (ii) fibroblasts, (iii) blood vessels, (iv) immune cells, and (v) extracellular matrix components. In most cases, this combination of components may result in an inhospitable environment, in which a significant retrenchment in nutrients and oxygen considerably disturbs cell metabolism. Cancer cells are characterized by an enhanced uptake and utilization of glucose, a phenomenon described by Otto Warburg over 90 years ago. One of the main products of this reprogrammed cell metabolism is lactate. "Lactagenic" or lactate-producing cancer cells are characterized by their immunomodulatory properties, since lactate, the end product of the aerobic glycolysis, besides acting as an inducer of cellular signaling phenomena to influence cellular fate, might also play a role as an immunosuppressive metabolite. Over the last 10 years, it has been well accepted that in the TME, the lactate secreted by transformed cells is able to compromise the function and/or assembly of an effective immune response against tumors. Herein, we will discuss recent advances regarding the deleterious effect of high concentrations of lactate on the tumor-infiltrating immune cells, which might characterize an innovative way of understanding the tumor-immune privilege.
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Affiliation(s)
- Alexandre Morrot
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | | | - Eduardo J. Salustiano
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luciana Boffoni Gentile
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luciana Conde
- Instituto de Microbiologia, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alessandra Almeida Filardy
- Instituto de Microbiologia, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiany Nunes Franklim
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kelli Monteiro da Costa
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Leonardo Freire-de-Lima
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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12
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Ross K, Jones RJ. Immune checkpoint inhibitors in renal cell carcinoma. Clin Sci (Lond) 2017; 131:2627-2642. [PMID: 29079639 PMCID: PMC5869245 DOI: 10.1042/cs20160894] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 01/05/2023]
Abstract
The immune system has long been known to play a critical role in the body's defence against cancer, and there have been multiple attempts to harness it for therapeutic gain. Renal cancer was, historically, one of a small number of tumour types where immune manipulation had been shown to be effective. The current generation of immune checkpoint inhibitors are rapidly entering into routine clinical practice in the management of a number of tumour types, including renal cancer, where one drug, nivolumab, an anti-programmed death-1 (PD-1) monoclonal antibody (mAb), is licensed for patients who have progressed on prior systemic treatment. Ongoing trials aim to maximize the benefits that can be gained from this new class of drug by exploring optimal timing in the natural course of the disease as well as combinations with other checkpoint inhibitors and drugs from different classes.
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Affiliation(s)
- Kirsty Ross
- Department of Oncology, Beatson West of Scotland Cancer Centre, Glasgow G12 0YN, U.K
| | - Rob J Jones
- Institute of Cancer Sciences, University of Glasgow, Beatson West of Scotland Cancer Centre, University of Glasgow, Glasgow G12 0YN, U.K.
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13
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Hayashi N, Iwamoto T, Qi Y, Niikura N, Santarpia L, Yamauchi H, Nakamura S, Hortobagyi GN, Pusztai L, Symmans WF, Ueno NT. Bone metastasis-related signaling pathways in breast cancers stratified by estrogen receptor status. J Cancer 2017; 8:1045-1052. [PMID: 28529618 PMCID: PMC5436258 DOI: 10.7150/jca.13690] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background: Breast cancer bone metastasis (BCBM)-specific genes have been reported without considering biological differences based on estrogen receptor (ER) status. The aims of this study were to identify BCBM-specific genes using our patient dataset and validate previously reported BCBM-specific genes, and to determine whether ER-status-related biological differences matter in identification of BCBM-specific genes. Methods: We used Affymetrix GeneChips to analyze 365 primary human epidermal growth factor receptor 2 (HER2)-negative invasive breast cancer specimens. Genes that were differentially expressed between patients who developed bone metastasis and those who developed non-bone metastasis were identified using Cox proportional hazards model, and differential expression of gene sets was assessed using gene set analysis. We performed gene set analysis to determine whether biological function associated with bone metastasis were different by ER status using 2,246 functionally annotated gene sets assembled from Gene Ontology data base. Results: Among 16,712 probe sets, 592 were overexpressed in the bone metastasis cohort compared to the non-bone-metastasis cohort (false discovery rate ≤ 0.05). However, no BCBM-specific genes met our significance tests when the cancers were stratified by ER status. In ER-positive and ER-negative breast cancers, 151 and 125 gene sets, respectively, were overexpressed for BCBM and the majority of BCBM-related pathways were different. Of significant gene sets, only 13 gene sets were overlapped between ER-positive and -negative cohorts. Conclusion: ER-positive and ER-negative breast cancers have different biological pathways in BCBM development. We have yet to explore BCBM-related biomarkers and targets considering the biological features associated with BCBM depending on the ER status.
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Affiliation(s)
- Naoki Hayashi
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Takayuki Iwamoto
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuan Qi
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Naoki Niikura
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Libero Santarpia
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hideko Yamauchi
- Department of Breast Surgical Oncology, St. Luke's International Hospital, Tokyo, Japan
| | - Seigo Nakamura
- Department of Surgery, Division of Breast Surgical Oncology, Showa University School of Medicine, Tokyo, Japan
| | - Gabriel N Hortobagyi
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lajos Pusztai
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - W Fraser Symmans
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Naoto T Ueno
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Ashrafi S, Shapouri R, Mahdavi M. Immunological consequences of immunization with tumor lysate vaccine and propranolol as an adjuvant: A study on cytokine profiles in breast tumor microenvironment. Immunol Lett 2017; 181:63-70. [DOI: 10.1016/j.imlet.2016.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 11/11/2016] [Accepted: 11/25/2016] [Indexed: 01/30/2023]
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Li L, Yang L, Wang L, Wang F, Zhang Z, Li J, Yue D, Chen X, Ping Y, Huang L, Zhang B, Zhang Y. Impaired T cell function in malignant pleural effusion is caused by TGF-β derived predominantly from macrophages. Int J Cancer 2016; 139:2261-9. [PMID: 27459735 DOI: 10.1002/ijc.30289] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/28/2016] [Accepted: 07/15/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Lifeng Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Li Yang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Liping Wang
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Fei Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- School of Life Sciences; Zhengzhou University; Zhengzhou Henan 450001 People's Republic of China
| | - Zhen Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Jieyao Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Dongli Yue
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Xinfeng Chen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Yu Ping
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- School of Life Sciences; Zhengzhou University; Zhengzhou Henan 450001 People's Republic of China
| | - Lan Huang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
| | - Bin Zhang
- Division of Hematology/Oncology; Department of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine; Chicago IL 60611
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- Department of Oncology; The First Affiliated Hospital of Zhengzhou University; Zhengzhou Henan 450052 People's Republic of China
- School of Life Sciences; Zhengzhou University; Zhengzhou Henan 450001 People's Republic of China
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Wailes EM, Levi-Polyachenko NH. Multi-walled nanotubes for cellular reprogramming of cancer. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 12:955-963. [PMID: 26733259 DOI: 10.1016/j.nano.2015.12.363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/14/2015] [Accepted: 12/05/2015] [Indexed: 11/18/2022]
Abstract
UNLABELLED Triple negative breast cancer is exceptionally difficult to treat due to the lack of distinguishing biomarkers for drug targeting. An alternative approach based on recent data indicates that these cells may be more susceptible to mechanical influences, such as alterations in the tumor stroma. Three dimensional collagen gels containing co-cultures of mesenchymal cells and MDA-MB-231 cancer cells were utilized to explore the effects of multi-walled nanotubes (MWNT) on cell contraction, invasion, viability, MMP-9 expression, and migration of breast cancer cells. MWNT were able to restrict each of these features for the cancer cells without impeding the associated mesenchymal cells. MWNT-collagen gels are useful tools for cellular reprogramming of cancer cells and should be considered in greater detail as a potential agent for therapeutic treatment of triple-negative breast cancer. FROM THE CLINICAL EDITOR Breast cancer is still a leading cause of death for women worldwide. One subtype of this cancer which is very aggressive is the triple negative breast cancer. The behavior of tumors may be affected by the tumor stromal environment. In this study, the authors investigated the effects of multi-walled nanotubes (MWNT) on tumor cell biology. The positive findings may point a new way in using this modality for treatment of triple-negative breast cancer in the future.
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Affiliation(s)
- Elizabeth M Wailes
- Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston Salem, NC, USA; Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences, Wake Forest University, Winston Salem, NC, USA
| | - Nicole H Levi-Polyachenko
- Department of Plastic and Reconstructive Surgery, Wake Forest University School of Medicine, Winston Salem, NC, USA; Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences, Wake Forest University, Winston Salem, NC, USA.
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Karimi S, Chattopadhyay S, Chakraborty NG. Manipulation of regulatory T cells and antigen-specific cytotoxic T lymphocyte-based tumour immunotherapy. Immunology 2015; 144:186-96. [PMID: 25243729 DOI: 10.1111/imm.12387] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 09/12/2014] [Accepted: 09/16/2014] [Indexed: 12/16/2022] Open
Abstract
The most potent killing machinery in our immune system is the cytotoxic T lymphocyte (CTL). Since the possibility for self-destruction by these cells is high, many regulatory activities exist to prevent autoimmune destruction by these cells. A tumour (cancer) grows from the cells of the body and is tolerated by the body's immune system. Yet, it has been possible to generate tumour-associated antigen (TAA) -specific CTL that are also self-antigen specific in vivo, to achieve a degree of therapeutic efficacy. Tumour-associated antigen-specific T-cell tolerance through pathways of self-tolerance generation represents a significant challenge to successful immunotherapy. CD4(+) CD25(+) FoxP3(+) T cells, referred to as T regulatory (Treg) cells, are selected in the thymus as controllers of the anti-self repertoire. These cells are referred to as natural T regulatory (nTreg) cells. According to the new consensus (Nature Immunology 2013; 14:307-308) these cells are to be termed as (tTreg). There is another class of CD4(+) Treg cells also involved in regulatory function in the periphery, also phenotypically CD4(+) CD25(±) , classified as induced Treg (iTreg) cells. These cells are to be termed as peripherally induced Treg (pTreg) cells. In vitro-induced Treg cells with suppressor function should be termed as iTreg. These different Treg cells differ in their requirements for activation and in their mode of action. The current challenges are to determine the degree of specificity of these Treg cells in recognizing the same TAA as the CTL population and to circumvent their regulatory constraints so as to achieve robust CTL responses against cancer.
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Affiliation(s)
- Shirin Karimi
- Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
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Abstract
BACKGROUND Viral gene therapy is a promising new treatment modality for head and neck cancer. This paper provides the reader with a review of the relevant literature in this field. RESULTS There are government licensed viral gene therapy products currently in use for head and neck cancer, utilised in conjunction with established treatment modalities. The viruses target tumour-associated genes, with the first licensed virus replacing p53 gene function, which is frequently lost in tumourigenesis. Oncolytic viruses selectively destroy cancer cells through viral replication and can be armed with therapeutic transgenes. CONCLUSION Despite considerable advances in this field over the last 40 years, further research is needed to improve the overall efficacy of the viruses and allow their widespread utilisation in the management of head and neck cancer.
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Kano A. Tumor cell secretion of soluble factor(s) for specific immunosuppression. Sci Rep 2015; 5:8913. [PMID: 25746680 PMCID: PMC4352862 DOI: 10.1038/srep08913] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 02/10/2015] [Indexed: 12/19/2022] Open
Abstract
Studies of tumor models using syngeneic transplantation have advanced our understanding of tumor immunity, including both immune surveillance and evasion. Murine mammary carcinoma 4T1 cells secrete immunosuppressive soluble factors as demonstrated in splenocyte culture. Cultured primary splenocytes secrete IFN-γ, which was strikingly elevated when the cells were isolated from 4T1 tumor-bearing mice. The secretion of IFN-γ peaked a week after 4T1 inoculation and then declined. This reduction may be due to the relatively decreased lymphocytes and increased granulocytes in a spleen accompanied by splenomegaly with time after the 4T1 inoculation. IFN-γ production was further suppressed with the addition of the conditioned media from 4T1 cells to the splenocyte culture. This suppressive effect was more evident in the splenocytes isolated from mice that had 4T1 tumors for a longer period of time and was not observed in the conditioned medium either from CT26 cells or with splenocytes isolated from CT26 tumor-bearing mice. These results suggest that the IFN-γ suppression is 4T1 tumor-specific. The soluble factor(s) in the 4T1-conditioned media was a protein between 10 to 100 kDa. The cytokine tip assay demonstrated several known cytokines that negatively regulate immune responses and may be candidates for this immunosuppression activity.
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Affiliation(s)
- Arihiro Kano
- Institute for Materials Chemistry and Engineering, Kyushu University
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20
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Zhu H, Berkova Z, Mathur R, Sehgal L, Khashab T, Tao RH, Ao X, Feng L, Sabichi AL, Blechacz B, Rashid A, Samaniego F. HuR Suppresses Fas Expression and Correlates with Patient Outcome in Liver Cancer. Mol Cancer Res 2015; 13:809-18. [PMID: 25678597 DOI: 10.1158/1541-7786.mcr-14-0241] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 01/03/2015] [Indexed: 11/16/2022]
Abstract
UNLABELLED Hepatocellular carcinomas (HCC) show resistance to chemotherapy and have blunt response to apoptotic stimuli. HCC cell lines express low levels of the Fas death receptor and are resistant to FasL stimulation, whereas immortalized hepatocytes are sensitive. The variable Fas transcript levels and consistently low Fas protein in HCC cells suggest posttranscriptional regulation of Fas expression. The 3'-untranslated region (UTR) of Fas mRNA was found to interact with the ribonucleoprotein Human Antigen R (HuR) to block mRNA translation. Silencing of HuR in HCC cells increased the levels of cell surface Fas and sensitized HCC cells to FasL. Two AU-rich domains within the 3'-UTR of Fas mRNA were identified as putative HuR-binding sites and were found to mediate the translational regulation in reporter assay. Hydrodynamic transfection of HuR plasmid into mice induced downregulation of Fas expression in livers and established functional resistance to the killing effects of Fas agonist. Human HCC tumor tissues showed significantly higher overall and cytoplasmic HuR staining compared with normal liver tissues, and the high HuR staining score correlated with worse survival of patients with early-stage HCC. Combined, the protumorigenic ribonucleoprotein HuR blocks the translation of Fas mRNA and effectively prevents Fas-mediated apoptosis in HCC, suggesting that targeting HuR would sensitize cells to apoptotic stimuli and reverse tumorigenic properties. IMPLICATIONS Demonstrating how death receptor signaling pathways are altered during progression of HCC will enable the development of better methods to restore this potent apoptosis mechanism.
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Affiliation(s)
- Haifeng Zhu
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Zuzana Berkova
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Rohit Mathur
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Lalit Sehgal
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Tamer Khashab
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Rong-Hua Tao
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xue Ao
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Lei Feng
- Department of Statistics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - Boris Blechacz
- Department of Gastroenterology, Hepatology, and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Asif Rashid
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Felipe Samaniego
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Dannenmann SR, Thielicke J, Stöckli M, Matter C, von Boehmer L, Cecconi V, Hermanns T, Hefermehl L, Schraml P, Moch H, Knuth A, van den Broek M. Tumor-associated macrophages subvert T-cell function and correlate with reduced survival in clear cell renal cell carcinoma. Oncoimmunology 2014; 2:e23562. [PMID: 23687622 PMCID: PMC3655740 DOI: 10.4161/onci.23562] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Although malignant cells can be recognized and controlled by the immune system, in patients with clinically apparent cancer immunosurveillance has failed. To better understand local immunoregulatory processes that impact on cancer progression, we correlated intratumoral immunological profiles with the survival of patients affected by primary clear cell renal cell carcinoma (ccRCC). A retrospective analysis of 54 primary ccRCC samples for 31 different immune response-related transcripts, revealed a negative correlation of CD68 (a marker of tumor-associated macrophages, TAMs) and FOXP3 (a marker of regulatory T cells, Tregs) with survival. The subsequent analysis of 12 TAM-related transcripts revealed an association between the genes coding for CD163, interferon regulatory factor 4 (IRF4) and fibronectin 1 (FN1), all of which have been linked to the M2 TAM phenotype, with reduced survival and increased tumor stage, whereas the opposite was the case for the M1-associated gene coding for inducible nitric oxide synthetase (iNOS). The M2 signature of (CD68+) TAMs was found to correlate with CD163 expression, as determined in prospectively collected fresh ccRCC tissue samples. Upon co-culture with autologous tumor cells, CD11b+ cells isolated from paired blood samples expressed CD163 and other M2-associated proteins, suggesting that the malignant cells promote the accumulation of M2 TAMs. Furthermore, the tumor-associated milieu as well as isolated TAMs induced the skewing of autologous, blood-derived CD4+ T cells toward a more immunosuppressive phenotype, as shown by decreased production of effector cytokines, increased production of interleukin-10 (IL-10) and enhanced expression of the co-inhibitory molecules programmed death 1 (PD-1) and T-cell immunoglobulin mucin 3 (TIM-3). Taken together, our data suggest that ccRCC progressively attracts macrophages and induces their skewing into M2 TAMs, in turn subverting tumor-infiltrating T cells such that immunoregulatory functions are increased at the expense of effector functions.
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Salvadori G, Dos Santos JN, Martins MAT, Vasconcelos AC, Meurer L, Rados PV, Carrard VC, Martins MD. Ki-67, TGF-β1, and elastin content are significantly altered in lip carcinogenesis. Tumour Biol 2014; 35:7635-44. [PMID: 24798972 DOI: 10.1007/s13277-014-1989-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 04/17/2014] [Indexed: 11/25/2022] Open
Abstract
Epithelial changes observed in actinic cheilitis (AC) and lower lip squamous cell carcinoma (LLSCC) have been studied using different markers in order to observe diagnostic and prognostic factors for both lesions. The aim of the present study was to analyze Ki-67, TGF-β1, and elastin content in AC and LLSCC to determine the possible role of these proteins in lip carcinogenesis. Medical records of 29 cases of AC and 53 cases of LLSCC were analyzed. Lesions were classified according histological pattern and submitted to immunostaining for Ki-67, TGF-β1, and elastin. Different percentages of Ki-67-positive cells were found in AC depending on the degree of epithelial dysplasia (p < 0.01). An association was also found between the percentage of Ki-67-positive cells and tumor grade in LLSCC (p < 0.01). An inverse correlation was found between Ki-67 and TGF-β1 in AC and LLSCC (p < 0.01). Elastosis was thinner and more discontinuous in LLSCC in comparison to AC, and this difference in the elastin immunolabeling pattern was statistically significant between groups (p < 0.01). The present findings indicate that changes in Ki-67 and TGF-β1 content contribute to lip carcinogenesis. Furthermore, elastin content reflects changes in the extracellular matrix in both AC and LLSCC.
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Affiliation(s)
- Gabriela Salvadori
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Reiners KS, Dassler J, Coch C, Pogge von Strandmann E. Role of Exosomes Released by Dendritic Cells and/or by Tumor Targets: Regulation of NK Cell Plasticity. Front Immunol 2014; 5:91. [PMID: 24639679 PMCID: PMC3945280 DOI: 10.3389/fimmu.2014.00091] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 02/20/2014] [Indexed: 01/30/2023] Open
Abstract
Exosomes are endosomal-derived nanovesicles released by normal and tumor cells, which transfer functionally active proteins, lipids, and nucleic acids between cells. They are important mediators of intercellular communication and act on the adjacent stroma as well as in the periphery. Recently, exosomes have been recognized to play a pathophysiological role in various diseases such as cancer or infectious diseases. Tumor cell-derived exosomes (Tex) have been shown to act as tumor promotors by educating non-malignant cells to provide a tumor supporting microenvironment, which helps to circumvent immune detection by the host and supports metastasis. However, Tex with anti-tumor, immune-activating properties were also described reflecting the complexity of exosomes. Here, we assess the role of extracellular microvesicles/exosomes as messengers affecting NK cell function in health and disease and discuss the molecular basis for the differential impact of exosomes on NK cell activity. The molecular composition/load of exosomes and the mechanisms regulating their release remain unclear and need to be further analyzed to facilitate the development of new treatment options targeting the exosomal machinery.
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Affiliation(s)
- Katrin S Reiners
- Clinic I for Internal Medicine, University of Cologne , Cologne , Germany
| | - Juliane Dassler
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn , Bonn , Germany
| | - Christoph Coch
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn , Bonn , Germany
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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: 125] [Impact Index Per Article: 11.4] [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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Ma GF, Miao Q, Zeng XQ, Luo TC, Ma LL, Liu YM, Lian JJ, Gao H, Chen SY. Transforming growth factor-β1 and -β2 in gastric precancer and cancer and roles in tumor-cell interactions with peripheral blood mononuclear cells in vitro. PLoS One 2013; 8:e54249. [PMID: 23342108 PMCID: PMC3544811 DOI: 10.1371/journal.pone.0054249] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 12/10/2012] [Indexed: 12/14/2022] Open
Abstract
Transforming growth factor-β1 (TGF-β1) and -β2 are correlated with poorer prognosis in gastric cancer (GC), which act in both tumor and immune cells. However, their expressions in precancer and tumor-cell interactions with peripheral blood mononuclear cells (PBMCs) remain unclear. Protein levels of TGF-β1 and -β2 were analyzed by immunohistochemistry and corresponding mRNA levels were determined by quantitative real-time polymerase chain reaction in 93 surgical and biopsy specimens. Serum TGF-β concentration was detected by enzyme-linked immunosorbent assays. AGS and MKN45 cell lines were directly or indirectly cocultured with PBMCs in vitro. TGF-β and Smad molecules were detected after cocultures and the growths of GC cells and PBMCs were assessed by cell proliferation assay. The results showed positive staining for TGF-β1 was detected in 20% of control samples, 52.3% of precancer, 59.1% of early GC and 66.7% of advanced GC samples, correlated with lesion progression (χ2 = 9.487, P = 0.002). All tissues were positive for TGF-β2. TGF-β1 mRNA levels were increased in advanced cancers, while TGF-β2 increased earlier. TGF-β1 mRNA levels were higher in tumor than in peritumor, which positively correlated with Smad2 and Smad7. Serum TGF-β levels were significantly higher in patients with early and advanced cancers compared to controls (TGF-β1∶50.08±4.38 and 45.76±5.00 vs. 27.78±6.11 ng/mL; TGF-β2∶133.61±21.90 and 111.34±15.76 vs. 59.41±15.42 ng/mL, both P<0.05). The levels of TGF-β1 mRNA and cytokine secretion were higher in GC cells after direct coculture compared to indirect culture. TGF-β1 was decreased and TGF-β2 was increased in PBMCs after cocultures. Moreover, TGF-β1 inhibited the viability of PBMCs but not cancer cells. Collectively, neoplastic transformation may be an early event involving the increase of TGF-β1 in the general and local environment. TGF-β1 production is promoted by the direct interaction between GC cells and PBMCs, which might facilitate cancer development.
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Affiliation(s)
- Gui-Fen Ma
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qing Miao
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiao-Qing Zeng
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Tian-Cheng Luo
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li-Li Ma
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yi-Mei Liu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing-Jing Lian
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hong Gao
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shi-Yao Chen
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
- * E-mail:
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de Sá VK, Carvalho L, Gomes A, Alarcão A, Silva MR, Couceiro P, Sousa V, Soares FA, Capelozzi VL. Role of the extracellular matrix in variations of invasive pathways in lung cancers. ACTA ACUST UNITED AC 2013; 46:21-31. [PMID: 23314337 PMCID: PMC3854345 DOI: 10.1590/1414-431x20122263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 09/06/2012] [Indexed: 01/28/2023]
Abstract
Among the most common features of highly invasive tumors, such as lung adenocarcinomas (AD) and squamous cell carcinomas (SqCC), is the massive degradation of the extracellular matrix. The remarkable qualitative and quantitative modifications of hyaluronidases (HAases), hyaluronan synthases (HAS), E-cadherin adhesion molecules, and the transforming growth factor β (TGF-β) may favor invasion, cellular motility, and proliferation. We examined HAase proteins (Hyal), HAS, E-cadherin, and TGF-β profiles in lung AD subtypes and SqCC obtained from smokers and non-smokers. Fifty-six patients, median age 64 years, who underwent lobectomy for AD (N = 31) and SqCC (N = 25) were included in the study. HAS-1, -2 and -3, and Hyal-1 and -3 were significantly more expressed by tumor cells than normal and stroma cells (P < 0.01). When stratified according to histologic types, HAS-3 and Hyal-1 immunoreactivity was significantly increased in tumor cells of AD (P = 0.01) and stroma of SqCC (P = 0.002), respectively. Tobacco history in patients with AD was significantly associated with increased HAS-3 immunoreactivity in tumor cells (P < 0.01). Stroma cells of SqCC from non-smokers presented a significant association with HAS-3 (P < 0.01). Hyal, HAS, E-cadherin, and TGF-β modulate a different tumor-induced invasive pathway in lung AD subgroups and SqCC. HAases in resected AD and SqCC were strongly related to the prognosis. Therefore, our findings suggest that strategies aimed at preventing high HAS-3 and Hyal-1 synthesis, or local responses to low TGF-β and E-cadherin, may have a greater impact in lung cancer prognosis.
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Affiliation(s)
- V K de Sá
- Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo São Paulo, SP, Brasil.
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TGF Beta Signaling and Its Role in Glioma Pathogenesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 986:171-87. [DOI: 10.1007/978-94-007-4719-7_9] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Abstract
The cytoplasmic events that control mammalian gene expression, primarily mRNA stability and translation, potently influence the cellular response to internal and external signals. The ubiquitous RNA-binding protein (RBP) HuR is one of the best-studied regulators of cytoplasmic mRNA fate. Through its post-transcriptional influence on specific target mRNAs, HuR can alter the cellular response to proliferative, stress, apoptotic, differentiation, senescence, inflammatory and immune stimuli. In light of its central role in important cellular functions, HuR's role in diseases in which these responses are aberrant is increasingly appreciated. Here, we review the mechanisms that control HuR function, its influence on target mRNAs, and how impairment in HuR-governed gene expression programs impact upon different disease processes. We focus on HuR's well-recognized implication in cancer and chronic inflammation, and discuss emerging studies linking HuR to cardiovascular, neurological, and muscular pathologies. We also discuss the progress, potential, and challenges of targeting HuR therapeutically.
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Affiliation(s)
- Subramanya Srikantan
- Laboratory of Molecular Biology and Immunology, NIA-IRP, NIH, Baltimore, MD 21224, USA
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29
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Abstract
Transforming growth factor-β (TGF-β) is a multifunctional cytokine, with important roles in maintaining tissue homeostasis. TGF-β signals via transmembrane serine/threonine kinase receptors and intracellular Smad transcriptional regulators. Perturbed TGF-β signaling has been implicated in a large variety of pathological conditions. Increased TGF-β levels have been found in patients with cancer, fibrosis, and systemic sclerosis, and were correlated with disease severity. In cancer, TGF-β mediates tumor invasion and metastasis by affecting both tumor cells and the tumor microenvironment including fibroblast activation and immune suppression. Furthermore, TGF-β is a strong stimulator of extracellular matrix deposition. On the basis of these observations, small molecule inhibitors of the TGF-β receptor kinases, neutralizing antibodies that interfere with ligand?receptor interactions, antisense oligonucleotides reducing TGF-β expression, and soluble receptor ectodomains that sequester TGF-β have been developed to intervene with excessive TGF-β signaling activity in the aforementioned disorders. Here, we review the current state of anti-TGF-β therapy in clinical trials.
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Affiliation(s)
- Lukas J A C Hawinkels
- Department of Molecular Cell Biology and Centre for Biomedical Genetics, Leiden University Medical Center, Leiden, The Netherlands
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30
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Guo W, Dong Z, Guo Y, Chen Z, Yang Z, Kuang G. Association of polymorphisms in transforming growth factor-β receptors with susceptibility to gastric cardia adenocarcinoma. Mol Biol Rep 2011; 39:4301-9. [PMID: 21785915 DOI: 10.1007/s11033-011-1217-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 07/14/2011] [Indexed: 11/30/2022]
Abstract
Both transforming growth factor-β receptor I (TGFBR1) and receptor II (TGFBR2) are serine/threonine kinases and play important roles in TGF-β/Smads signal pathway. The case-control study was performed to evaluate the possible association of Int7G24A and *6A polymorphisms of TGFBR1 and G-875A polymorphism of TGFBR2 with susceptibility to gastric cardia adenocarcinoma (GCA) in a population of North China. Polymerase-chain reaction (PCR)-restriction fragment length polymorphism (RFLP) and PCR methods were used respectively to detect the genotype of Int7G24A, *6A and G-875A in 468 GCA and 584 healthy controls. Immunohistochemistry method was used to determine the protein expression of TGFBR1 and TGFBR2. Family history of upper gastrointestinal cancer (UGIC) significantly increased the risk of developing GCA. There were no differences in the genotype distribution of TGFBR1 *6A polymorphism among cases and controls. However, A allele of Int7G24A significantly elevated the risk of developing GCA (adjusted OR = 1.34, 95% CI 1.03-1.87) and A allele of G-875A significantly decreased the risk of developing GCA (adjusted OR = 0.73, 95% CI 0.49-0.92). When stratified for TNM stage, A allele of Int7G24A and G-875A allele carriers had a 1.41-fold (95% CI 1.05-1.98) increased and a 0.70-fold (95% CI 0.47-0.92) decreased risk of stage III and IV gastric cardia adenocarcinoma. The protein expression of TGFBR1 and TGFBR2 in GCA was not correlated with genotypes of them. In conclusions, TGFBR1 Int7G24A and TGFBR2 G-875A polymorphisms may play important roles in the risk of GCA in North China.
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Affiliation(s)
- Wei Guo
- Department of Laboratory of Pathology, Hebei Cancer Institute, The Fourth Hospital of Hebei Medical University, 12 Jiankanglu, Shijiazhuang, 050011, Hebei, China
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Chakraborty NG. Immunoregulation through IL-10 gene expression and the fate of cytotoxic T lymphocyte-mediated tumor immunotherapy. INDIAN JOURNAL OF HUMAN GENETICS 2011; 15:3-8. [PMID: 20407642 PMCID: PMC2846567 DOI: 10.4103/0971-6866.50862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Gene analysis of tumor associated antigens revealed that tumor antigens are all normal gene product. Inducing tumor reactive cytotoxic T lymphocytes (CT) in the patients is same as inducing autoimmunity in the patients. Immunosuppressive cytokine interleukin-10 (IL-10) plays an important role in maintaining homeostasis or tolerance. To break the tumor tolerance, blocking and IL-10 secretion or intervention in the pathways of IL-10 gene activation is indeed important.
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Affiliation(s)
- Nitya G Chakraborty
- Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 006030-1628, USA
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Sun LX, Lin ZB, Duan XS, Lu J, Ge ZH, Li XJ, Li M, Xing EH, Jia J, Lan TF, Li WD. Ganoderma lucidum polysaccharides antagonize the suppression on lymphocytes induced by culture supernatants of B16F10 melanoma cells. J Pharm Pharmacol 2011; 63:725-35. [PMID: 21492175 DOI: 10.1111/j.2042-7158.2011.01266.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Abstract
Objectives
Tumour cells produce factors such as interleukin 10 (IL-10), transforming growth factor β1 (TGF-β1) and vascular endothelial growth factor (VEGF) that suppress the function of immune cells or induce apoptosis of immune cells. One of the most important goals of tumour immunotherapy is to antagonize this suppression on immune cells. Ganoderma lucidum polysaccharides (Gl-PS) may have this potential. The purpose of this study was to determine the antagonistic effects of Gl-PS on the suppression induced by B16F10 melanoma cell culture supernatant (B16F10-CS) on lymphocytes.
Methods
Gl-PS was used on lymphocytes incubated with B16F10-CS. Enzyme-linked immunosorbent assay was used to determine the levels of IL-10, TGF-β1 and VEGF in B16F10-CS. The MTT assay was used to determine the proliferation of lymphocytes. Immunocytochemistry and Western blot assay were used to determine perforin and granzyme B production in lymphocytes.
Key findings
There were elevated levels of IL-10, TGF-β1 and VEGF in B16F10-CS. The lymphocyte proliferation, and perforin and granzyme B production in lymphocytes after induction with phytohemagglutinin, as well as lymphocyte proliferation in the mixed lymphocyte reaction, were suppressed by B16F10-CS. This suppression was fully or partially antagonized by Gl-PS.
Conclusions
B16F10-CS suppressed lymphocyte proliferation and perforin and granzyme B production in lymphocytes after induction with phytohemagglutinin, as well as lymphocyte proliferation in the mixed lymphocyte reaction. This suppression may be associated with elevated levels of immunosuppressive IL-10, TGF-β1 and VEGF in B16F10-CS. Gl-PS had antagonistic effects on the immunosuppression induced by B16F10-CS, suggesting the potential for Gl-PS in cancer immunotherapy.
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Affiliation(s)
- Li-Xin Sun
- Department of Pharmacology, Peking University Health Science Center, School of Basic Medical Sciences, Beijing, China
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Zhi-Bin Lin
- Department of Pharmacology, Peking University Health Science Center, School of Basic Medical Sciences, Beijing, China
| | - Xin-Suo Duan
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Jie Lu
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Zhi-Hua Ge
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Xue-Jun Li
- Department of Pharmacology, Peking University Health Science Center, School of Basic Medical Sciences, Beijing, China
| | - Min Li
- Department of Pharmacology, Peking University Health Science Center, School of Basic Medical Sciences, Beijing, China
| | - En-Hong Xing
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Jing Jia
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Tian-Fei Lan
- Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China
| | - Wei-Dong Li
- Department of Pharmacology, Peking University Health Science Center, School of Basic Medical Sciences, Beijing, China
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Abstract
With >10,000,000 cancer survivors in the U.S. alone, the late effects of cancer treatment are a significant public health issue. Over the past 15 years, much work has been done that has led to an improvement in our understanding of the molecular mechanisms underlying the development of normal tissue injury after cancer therapy. In many cases, these injuries are characterized at the histologic level by loss of parenchymal cells, excessive fibrosis, and tissue atrophy. Among the many cytokines involved in this process, transforming growth factor (TGF)-beta1 is thought to play a pivotal role. TGF-beta1 has a multitude of functions, including both promoting the formation and inhibiting the breakdown of connective tissue. It also inhibits epithelial cell proliferation. TGF-beta1 is overexpressed at sites of injury after radiation and chemotherapy. Thus, TGF-beta1 represents a logical target for molecular therapies designed to prevent or reduce normal tissue injury after cancer therapy. Herein, the evidence supporting the critical role of TGF-beta1 in the development of normal tissue injury after cancer therapy is reviewed and the results of recent research aimed at preventing normal tissue injury by targeting the TGF-beta1 pathway are presented.
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Affiliation(s)
- Mitchell S Anscher
- Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia, USA.
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Onishi T, Hayashi N, Theriault RL, Hortobagyi GN, Ueno NT. Future directions of bone-targeted therapy for metastatic breast cancer. Nat Rev Clin Oncol 2010; 7:641-51. [PMID: 20808302 DOI: 10.1038/nrclinonc.2010.134] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Bone is the most common metastatic site for breast cancer, and bone metastases can cause pain as well as risk of pathological fractures. Emerging treatments for metastatic bone disease have arisen from advances in our understanding of the unique cellular and molecular mechanisms that contribute to bone metastasis. The interaction between tumor cells and the bone microenvironment results in a 'vicious cycle' that increases both bone destruction and tumor burden. The tumor secretes factors, such as parathyroid hormone-related peptide, that stimulate osteoclastogenesis. Similarly, the bone stroma produces growth factors, such as transforming growth factor β, that promote tumor growth in bone. Therapeutic targeting of these microenvironmental factors is under intensive investigation. Other attractive therapeutic targets include signaling molecules, such as receptor activator of nuclear factor κB ligand, Src kinase, and cathepsin K, all of which regulate osteoclast function, and chemokine receptor 4, which is involved in the homing of tumor cells to bone. In this Review, we describe the progress and future directions of novel bone-targeted therapies that may reduce or prevent destructive bone metastasis from breast cancer. Novel modalities for predicting and monitoring treatment response will also be described.
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Affiliation(s)
- Tomifumi Onishi
- Christus Hospital-St Elizabeth, 2830 Calder Street, Beaumont, TX 77702, USA
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Abdelmohsen K, Gorospe M. Posttranscriptional regulation of cancer traits by HuR. WILEY INTERDISCIPLINARY REVIEWS-RNA 2010; 1:214-29. [PMID: 21935886 DOI: 10.1002/wrna.4] [Citation(s) in RCA: 320] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cancer-related gene expression programs are strongly influenced by posttranscriptional mechanisms. The RNA-binding protein HuR is highly abundant in many cancers. Numerous HuR-regulated mRNAs encode proteins implicated in carcinogenesis. Here, we review the collections of HuR target mRNAs that encode proteins responsible for implementing five major cancer traits. By interacting with specific mRNA subsets, HuR enhances the levels of proteins that (1) promote cell proliferation, (2) increase cell survival, (3) elevate local angiogenesis, (4) help the cancer cell evade immune recognition, and (5) facilitate cancer cell invasion and metastasis. We propose that HuR exerts a tumorigenic function by enabling these cancer phenotypes. We discuss evidence that links HuR to several specific cancers and suggests its potential usefulness in cancer diagnosis, prognosis, and therapy.
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Riedlinger G, Adams J, Stehle JR, Blanks MJ, Sanders AM, Hicks AM, Willingham MC, Cui Z. The spectrum of resistance in SR/CR mice: the critical role of chemoattraction in the cancer/leukocyte interaction. BMC Cancer 2010; 10:179. [PMID: 20438640 PMCID: PMC2875217 DOI: 10.1186/1471-2407-10-179] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Accepted: 05/03/2010] [Indexed: 11/17/2022] Open
Abstract
Background Spontaneous regression/complete resistance (SR/CR) mice are a unique colony of mice that possess an inheritable, natural cancer resistance mediated primarily by innate cellular immunity. This resistance is effective against sarcoma 180 (S180) at exceptionally high doses and these mice remain healthy. Methods In this study, we challenged SR/CR mice with additional lethal transplantable mouse cancer cell lines to determine their resistance spectrum. The ability of these transplantable cancer cell lines to induce leukocyte infiltration was quantified and the percentage of different populations of responding immune cells was determined using flow cytometry. Results In comparison to wild type (WT) mice, SR/CR mice showed significantly higher resistance to all cancer cell lines tested. However, SR/CR mice were more sensitive to MethA sarcoma (MethA), B16 melanoma (B16), LL/2 lung carcinoma (LL/2) and J774 lymphoma (J774) than to sarcoma 180 (S180) and EL-4 lymphoma (EL-4). Further mechanistic studies revealed that this lower resistance to MethA and LL/2 was due to the inability of these cancer cells to attract SR/CR leukocytes, leading to tumor cell escape from resistance mechanism. This escape mechanism was overcome by co-injection with S180, which could attract SR/CR leukocytes allowing the mice to resist higher doses of MethA and LL/2. S180-induced cell-free ascites fluid (CFAF) co-injection recapitulated the results obtained with live S180 cells, suggesting that this chemoattraction by cancer cells is mediated by diffusible molecules. We also tested for the first time whether SR/CR mice were able to resist additional cancer cell lines prior to S180 exposure. We found that SR/CR mice had an innate resistance against EL-4 and J774. Conclusions Our results suggest that the cancer resistance in SR/CR mice is based on at least two separate processes: leukocyte migration/infiltration to the site of cancer cells and recognition of common surface properties on cancer cells. The infiltration of SR/CR leukocytes was based on both the innate ability of leukocytes to respond to chemotactic signals produced by cancer cells and on whether cancer cells produced these chemotactic signals. We found that some cancer cells could escape from SR/CR resistance because they did not induce infiltration of SR/CR leukocytes. However, if infiltration of leukocytes was induced by co-injection with chemotactic factors, these same cancer cells could be effectively recognized and killed by SR/CR leukocytes.
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Affiliation(s)
- Gregory Riedlinger
- Department of Pathology, Wake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, North Carolina, 27157, USA
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Jones E, Pu H, Kyprianou N. Targeting TGF-beta in prostate cancer: therapeutic possibilities during tumor progression. Expert Opin Ther Targets 2009; 13:227-34. [PMID: 19236240 DOI: 10.1517/14728220802705696] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND TGF-beta regulates prostate growth by inhibiting epithelial cell proliferation and inducing apoptosis through eliciting a dynamic signaling pathway. In metastatic prostate cancer, however, TGF-beta serves as a tumor promoter. TGF-beta engages Smad-dependent and Smad-independent mechanisms to exert its action. During prostate tumorigenesis, prostate cells exhibit loss or mutation of TGF-beta transmembrane receptors. Increased production of TGF-beta causes immunosuppression, extracellular matrix degradation, epithelia to mesenchymal transition and angiogenesis that promotes tumor cell invasion and metastasis. OBJECTIVE The molecular basis for effective therapeutic targeting of TGF-beta must be directed towards the double-edge-sword nature of the cytokine: inhibiting the TGF-beta tumor promoter capabilities in advanced metastatic prostate cancer, although retaining the growth-inhibitory abilities exhibited in early stages of prostate tumorigenesis. RESULTS/CONCLUSION The current understanding of the therapeutic possibilities of targeting TGF-beta signaling during prostate tumor progression is built on preclinical studies. Studies targeting TGF-beta signaling pathway for the treatment of several human malignancies include the use of neutralizing antibodies, antisense oligonucelotides and small molecule inhibitors of kinase activity of the receptor complex. This review focuses on exploiting the therapeutic potential of targeting TGF-beta signaling in the context of its contribution to prostate cancer initiation and progression to metastasis.
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Affiliation(s)
- Elisabeth Jones
- University of Kentucky, Surgery/Urology and Markey Cancer Center, 306 Combs Building, 800 Rose Street, Lexington, KY 40536, USA
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Perry K, Wong L, Liu V, Park I, Zhang Q, Rejen V, Huang X, Smith ND, Jovanovic B, Lonning S, Teicher BA, Lee C. Treatment of transforming growth factor-beta-insensitive mouse Renca tumor by transforming growth factor-beta elimination. Urology 2008; 72:225-9. [PMID: 18295867 DOI: 10.1016/j.urology.2007.11.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Revised: 11/09/2007] [Accepted: 11/20/2007] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The mouse renal cell carcinoma line, Renca, is insensitive to transforming growth factor-beta (TGF-beta) in vitro. The present study was conducted to determine whether removal of TGF-beta from these tumor cells would inhibit tumor progression in vivo. METHODS TGF-beta elimination was accomplished either by administration of neutralizing TGF-beta antibody into mice receiving intravenous injection of Renca tumor cells or infection of TGF-beta antisense expression vector into these tumor cells before subcutaneous injection into recipient mice. RESULTS Although a low dose of TGF-beta antibody (5 mg/kg every 3 days) was without any effect, a high dose of TGF-beta antibody (50 mg/kg every 3 days), administered to recipient mice, resulted in a significant reduction in lung metastasis and was accompanied by increased apoptosis in the tumor cells. When the tumor cells were transfected with a TGF-beta1 antisense expressing vector, a significant reduction occurred in the tumor incidence, as well as the tumor burden. However, in nude mice, cells with reduced TGF-beta1 production grew almost as well as did the unmodified Renca cells, suggesting that the host's immune system might play an antitumor role. CONCLUSIONS These results indicate that progression of Renca tumor can be inhibited by eliminating TGF-beta from the tumor cells. Our results also suggest that, although insensitive to TGF-beta under in vitro conditions, Renca tumors could be inhibited by TGF-beta removal through the systemic host environment.
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Affiliation(s)
- Kent Perry
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA
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Abstract
Established tumors develop ways to elude destruction by the host immune system. Recent work has revealed that tumors can take advantage of the generation of metabolic dysregulation to inhibit immune responses. Effector T-cell functions are particularly sensitive to nutrient availability in the tumor microenvironment. In this review, we highlight experimental data supporting the importance of glucose, oxygen, tryptophan, and arginine for optimal T-cell function, and the mechanisms by which these nutrients may become depleted in the tumor microenvironment. These observations provide a conceptual framework for modulating metabolic features of the T cell-tumor interaction, toward the end of promoting more effective immune-mediated tumor destruction in vivo.
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Affiliation(s)
- Candace M Cham
- Department of Pathology, Department of Medicine, and the Ben May Institute, University of Chicago, Chicago, IL 60637, USA
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40
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Abstract
Most of the current experimental cancer models do not reflect the pathophysiology of real-life cancer. Cancer usually occurs sporadically and is clonal in origin. Between tumor initiation and progression, clinically unapparent pre-malignant cells may persist for years or decades in humans. Recently, mouse models of sporadic cancer have been developed. The mouse germ-line can be engineered with high precision so that defined genes can be switched on and off in the adult organism in a targeted manner. Analysis of the immune response against sporadic tumors requires the knowledge of a tumor antigen. Ideally, a silent oncogene, for which the mice are not tolerant, is stochastically activated in individual cells. This approach offers the opportunity to analyze the adaptive immune response throughout the long process of malignant transformation and most closely resembles cancer in humans. In such a model with the highly immunogenic SV40 large T antigen as a dormant oncogene, we discovered that sporadic cancer is recognized by the adaptive immune system at the pre-malignant stage, concomitant with the induction of tumor antigen-specific tolerance. These results demonstrated that even highly immunogenic sporadic tumors are unable to induce functional cytotoxic T lymphocytes. Based on this model, we conclude that immunosurveillance plays little or no role against sporadic cancer and that tumors must not escape immune recognition or destruction.
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Affiliation(s)
- Gerald Willimsky
- Institute of Immunology, Charité Campus Benjamin Franklin, Berlin, Germany
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Prestwich RJ, Errington F, Hatfield P, Merrick AE, Ilett EJ, Selby PJ, Melcher AA. The immune system--is it relevant to cancer development, progression and treatment? Clin Oncol (R Coll Radiol) 2007; 20:101-12. [PMID: 18037277 DOI: 10.1016/j.clon.2007.10.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Revised: 09/21/2007] [Accepted: 10/17/2007] [Indexed: 01/12/2023]
Abstract
The ability of the immune system to effectively respond to human tumours is a matter of long-term controversy. There is an increasing body of recent evidence to support a role for the immune system in eliminating pre-clinical cancers, an old concept termed 'immunosurveillance'. 'Immunoediting' is an updated hypothesis, in which selection pressures applied by the immune response to tumours modulate tumour immunogenicity and growth. Tumour infiltration by immune cells has been shown to have powerful prognostic significance in a host of cancer types. Paradoxically, in some circumstances the immune system can promote tumour development. Cytotoxic therapies, including radiotherapy and chemotherapy, induce potentially immunogenic cell death, releasing tumour-associated antigens in the context of a 'danger' signal to the immune system. An understanding of the interaction between immune cells, tumour cells and treatment modalities will therefore guide the future combination of immunotherapy with conventional therapy to achieve optimal anti-tumour effects.
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Affiliation(s)
- R J Prestwich
- Cancer Research UK, Leeds Institute of Molecular Medicine, St. James's University Hospital, Beckett Street, Leeds LS9 7TF, UK.
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Hawinkels LJAC, Verspaget HW, van Duijn W, van der Zon JM, Zuidwijk K, Kubben FJGM, Verheijen JH, Hommes DW, Lamers CBHW, Sier CFM. Tissue level, activation and cellular localisation of TGF-beta1 and association with survival in gastric cancer patients. Br J Cancer 2007; 97:398-404. [PMID: 17637685 PMCID: PMC2360315 DOI: 10.1038/sj.bjc.6603877] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Transforming growth factor-β1 (TGF-β1), a tumour suppressing as well as tumour-promoting cytokine, is stored as an extracellular matrix-bound latent complex. We examined TGF-β1 activation and localisation of TGF-β1 activity in gastric cancer. Gastric tumours showed increased stromal and epithelial total TGF-β1 staining by immunohistochemistry. Active TGF-β1 was present in malignant epithelial cells, but most strongly in smooth muscle actin expressing fibroblasts. Normal gastric mucosa from the same patient showed some staining for total, and little for active TGF-β1. Active TGF-β1 levels were determined by ELISA on tissue homogenates, confirming a strong increase in active TGF-β1 in tumours compared to corresponding normal mucosa. Moreover, high tumour TGF-β1 activity levels were significantly associated with clinical parameters, including worse survival of the patients. Total and active TGF-β1 levels were not correlated, suggesting a specific activation process. Of the different proteases tested, active TGF-β1 levels were only correlated with urokinase activity levels. The correlation with urokinase activity suggests a role for plasmin in TGF-β1 activation in the tumour microenvironment, resulting in transformation of resident fibroblasts to tumour promoting myofibroblasts. In conclusion we have shown localisation and clinical relevance of TGF-β1 activity levels in gastric cancer.
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Affiliation(s)
- L J A C Hawinkels
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - H W Verspaget
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - W van Duijn
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - J M van der Zon
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - K Zuidwijk
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - F J G M Kubben
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - J H Verheijen
- TNO Quality of Life BioSciences, Leiden, The Netherlands
| | - D W Hommes
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - C B H W Lamers
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - C F M Sier
- Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, The Netherlands
- Department of Gastroenterology and Hepatology, Building 1, C4, Leiden University Medical Centre, PO Box 9600, 2300 RC Leiden, The Netherlands. E-mail:
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Abstract
Several mechanisms that impair the immune response to promote tumour progression are reported. These mechanisms aim to reduce the ability of antigen-presenting cells to present antigen and activate naïve T cells to support an active immune response or to create a suppressive environment that induce non-functional tumour-associated antigen-specific T cells. Prostate cancer (PC) alone accounts for 33% of incident cancer cases and about 9% of all cancer-related deaths among men in the USA during 2006. Whereas androgen deprivation has remained the first line of therapy for advanced PC, other therapies are still required due to progression to an androgen-resistant state and eventually loss of control in patients receiving hormonal therapy. Immunotherapy seems to be a promising approach to enhance tumour-specific T-cell responses in different cancers including prostate. More importantly, clinical trials in advanced PC patients have shown that immunotherapy may generate significant clinical responses. Immunology and immunotherapy aspects of PC with focus on prostate-specific antigen will be presented.
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Affiliation(s)
- E Elkord
- CRUK Immunology Department, Paterson Institute for Cancer Research, University of Manchester, Manchester, UK.
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44
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Abstract
Cancer immune surveillance is considered to be an important host protection process to inhibit carcinogenesis and to maintain cellular homeostasis. In the interaction of host and tumour cells, three essential phases have been proposed: elimination, equilibrium and escape, which are designated the 'three E's'. Several immune effector cells and secreted cytokines play a critical role in pursuing each process. Nascent transformed cells can initially be eliminated by an innate immune response such as by natural killer cells. During tumour progression, even though an adaptive immune response can be provoked by antigen-specific T cells, immune selection produces tumour cell variants that lose major histocompatibility complex class I and II antigens and decreases amounts of tumour antigens in the equilibrium phase. Furthermore, tumour-derived soluble factors facilitate the escape from immune attack, allowing progression and metastasis. In this review, the central roles of effector cells and cytokines in tumour immunity, and the escape mechanisms of tumour cells during tumour progression are discussed.
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Affiliation(s)
- Ryungsa Kim
- International Radiation Information Centre, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
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45
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Kim R, Emi M, Tanabe K. Cancer immunoediting from immune surveillance to immune escape. Immunology 2007. [PMID: 17386080 DOI: 10.1111/j.1365-2567.2007.02587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cancer immune surveillance is considered to be an important host protection process to inhibit carcinogenesis and to maintain cellular homeostasis. In the interaction of host and tumour cells, three essential phases have been proposed: elimination, equilibrium and escape, which are designated the 'three E's'. Several immune effector cells and secreted cytokines play a critical role in pursuing each process. Nascent transformed cells can initially be eliminated by an innate immune response such as by natural killer cells. During tumour progression, even though an adaptive immune response can be provoked by antigen-specific T cells, immune selection produces tumour cell variants that lose major histocompatibility complex class I and II antigens and decreases amounts of tumour antigens in the equilibrium phase. Furthermore, tumour-derived soluble factors facilitate the escape from immune attack, allowing progression and metastasis. In this review, the central roles of effector cells and cytokines in tumour immunity, and the escape mechanisms of tumour cells during tumour progression are discussed.
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Affiliation(s)
- Ryungsa Kim
- International Radiation Information Centre, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
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46
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Fainaru O, Shay T, Hantisteanu S, Goldenberg D, Domany E, Groner Y. TGFbeta-dependent gene expression profile during maturation of dendritic cells. Genes Immun 2007; 8:239-44. [PMID: 17330136 DOI: 10.1038/sj.gene.6364380] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Primary immune response to pathogens involves the maturation of antigen-presenting dendritic cells (DC). Bacterial lipopolysacharride (LPS) is a potent inducer of DC maturation, whereas the transforming growth factor beta (TGFbeta) attenuates much of this process. Here, we analyzed the global gene expression pattern in LPS-treated bone marrow derived DC during inhibition of their maturation process by TGFbeta. Exposure of DC to LPS induces a pronounced cell response, manifested in altered expression of a large number of genes. Interestingly, TGFbeta did not affect most of the LPS responding genes. Nevertheless, analysis identified a subset of genes that did respond to TGFbeta, among them the two inflammatory cytokines interleukin (IL)-12 and IL-18. Expression of IL-12, the major proinflammatory cytokine secreted by mature DC, was downregulated by TGFbeta, whereas the expression level of the proinflammatory cytokine IL-18, known to potentiate the IL-12 effect, was upregulated. Expression of the peroxisome proliferator-activated receptor gamma (PPARgamma) increased in response to TGFbeta, concomitantly with reduced expression of chemokine receptor 7 (CCR7). This finding supports the possibility that TGFbeta-dependent inhibition of CCR7 expression in DC is mediated by PPARgamma.
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Affiliation(s)
- O Fainaru
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
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47
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Ali S, Mulryan K, Taher T, Stern PL. Immunotherapy success in prophylaxis cannot predict therapy: prime-boost vaccination against the 5T4 oncofoetal antigen. Cancer Immunol Immunother 2007; 56:165-80. [PMID: 16758205 PMCID: PMC11030774 DOI: 10.1007/s00262-006-0179-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Accepted: 04/28/2006] [Indexed: 10/24/2022]
Abstract
We have investigated the tumour therapeutic efficacy of homologous and heterologous prime-boost vaccine strategies against the 5T4 oncofoetal antigen, using both replication defective adenovirus expressing human 5T4 (Ad5T4), and retrovirally transduced DC lines (DCh5T4) in a subcutaneous B16 melanoma model (B16h5T4). In naïve mice we show that all vaccine combinations tested can provide significant tumour growth delay. While DCh5T4/Adh5T4 sequence is the best prophylactic regimen (P > 0.0001), it does not demonstrate any therapeutic efficacy in mice with established tumours. In active therapy the Adh5T4/DCh5T4 vaccination sequence is the best treatment regimen (P = 0.0045). In active therapy, we demonstrate that B16h5T4 tumour growth per se induces Th2 polarising immune responses against 5T4, and the success of subsequent vaccination is dependant on altering the polarizing immune responses from Th2 to Th1. We show that the first immunization with Adh5T4 can condition the mice to induce 5T4 specific Th1 immune responses, which can be sustained and subsequently boosted with DCh5T4. In contrast immunisation with DCh5T4 augments Th2 immune responses, such that a subsequent vaccination with Adh5T4 cannot rescue tumour growth. In this case the depletion of CD25(+) regulatory cells after tumour challenge but before immunization can restore therapeutic efficacy. This study highlights that all vaccine vectors are not equal at generating TAA immune responses; in tumour bearing mice the capability of different vaccines to activate the most appropriate anti-tumour immune responses is greatly altered compared to what is found in naïve mice.
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Affiliation(s)
- Sumia Ali
- CRUK Immunology Group, Paterson Institute of Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX UK
| | - Kate Mulryan
- CRUK Immunology Group, Paterson Institute of Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX UK
| | - Taher Taher
- CRUK Immunology Group, Paterson Institute of Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX UK
| | - Peter L. Stern
- CRUK Immunology Group, Paterson Institute of Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX UK
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48
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Abstract
BACKGROUND Advances in immunology and molecular biology have shown that colorectal cancer is potentially immunogenic and that host immune responses influence survival. However, immune surveillance and activation is frequently ineffective in preventing and/or controlling tumour growth. AIM To discuss potential ways in which colorectal cancer induces immune suppression, its effect upon prognosis and avenues for therapeutic development. METHOD A literature review was undertaken for evidence of colorectal cancer-induced immune suppression using PubMed and Medline searches. Further studies were identified from the reference lists of identified papers. RESULTS Immune suppression occurs at a molecular and cellular level and can result in a shift from cellular to humoral immunity. Several mechanisms for immune suppression have been described affecting innate and adaptive immunity with suppression linked to poorer clinical outcome. CONCLUSIONS Colorectal cancer causes direct inhibition of the host's immune response with a detrimental effect upon prognosis. Immunotherapy offers a therapeutic strategy to counteract these effects with promising results seen particularly in precancerous conditions and early tumours. This review strongly suggests that immunotherapy should be incorporated into adjuvant therapeutic trials for stage 2 tumours and be considered as adjuvant treatment in conjunction with standard chemotherapy regimes for advanced disease.
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Affiliation(s)
- C Evans
- Institution Colorectal Surgery Unit & Division of Oncology, St George's Hospital, Blackshaw Road, London, UK
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49
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Lee BN, Follen M, Rodriquez G, Shen DY, Malpica A, Shearer WT, Reuben JM. Deficiencies in myeloid antigen-presenting cells in women with cervical squamous intraepithelial lesions. Cancer 2006; 107:999-1007. [PMID: 16874820 DOI: 10.1002/cncr.22092] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND There is little information on the function of dendritic cells in women with human papillomavirus (HPV)-related cervical squamous intraepithelial lesions (SILs). In the current study the functions of dendritic cells in the development of T-cell immunity in women with cervical SILs were assessed. METHODS The percentage of myeloid dendritic cells (MDCs) and plasmacytoid dendritic cells (PDCs) in peripheral blood were enumerated of 44 patients with SIL (low-grade, 19; high-grade, 25), 19 patients with atypical squamous cells of undetermined significance (ASCUS), and 18 controls. The expression of costimulatory receptors was assessed and the ability of monocyte-derived dendritic cells (MDDC) to present HPV16-E6 and HPV16-E7 antigens to autologous T cells. RESULTS Patients with either low (L)-grade or high (H)-grade SIL had significantly lower median plasma levels of interferon-gamma than did the controls (P = .038 and .031, respectively). Compared with the controls, patients with ASCUS or LSILs had significantly lower median percentages of MDCs (P = .002 and P < .001, respectively), and significantly lower median percentages of MDDCs that expressed CD86 (P < .001 and P = .003, respectively) and major histocompatability complex class-II antigen human leukocyte antigen DR (HLA-DR) (P = .012 and P < .001, respectively). T cells of patients with ASCUS or LSILs proliferated less than those of the controls in response to HPV16-E7 (P = .002 and .046, respectively). CONCLUSIONS Low levels of peripheral blood MDCs and of MDDCs expressing CD86 and HLA-DR suggest that deficiencies in the ability of MDDC to present antigen to autologous T cells may lead to persistent infection with HPV and the development of cervical SILs in HPV-infected women.
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Affiliation(s)
- Bang-Ning Lee
- Department of Hematopathology, University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.
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50
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Abstract
HCs are clonal late B cells that are related to memory cells and display specific features of activation. Many of the distinctive features of HCs (eg, morphology, TRAP) are related to this specific activation. Many of the distinctive histologic features of HCL can be related to constitutive production of cytokines (eg, FGF, fibrosis) and to the expression/activation of adhesion receptors (eg, alpha(4)beta(1), alpha(5)beta(1) and alpha(v)beta(3) integrins, CD44v3). HCs usually have mutated IGVH genes and have no consistent or specific chromosome abnormalities (5q additions and 7q deletions in a minority). The signals that are responsible for several of the phenotypic features of HCs have been identified, but the nature of the underlying oncogenic events remains unknown.
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Affiliation(s)
- J C Cawley
- Department of Haematology, University of Liverpool, Third Floor Duncan Building, Daulby Street, Liverpool L69 3GA, UK.
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