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Gao K, Lv A, Zhang Q, Li Y, Yue Z, Xu S. Long noncoding RNA HOXA-AS2 ameliorates chronic intermittent hypoxia-induced lung inflammation by regulating miR-17-5p/tipe2 axis. Allergol Immunopathol (Madr) 2023; 51:36-44. [PMID: 36916086 DOI: 10.15586/aei.v51i2.701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/27/2022] [Indexed: 03/08/2023]
Abstract
PURPOSE The purpose is to confirm whether long noncoding RNA HOXA-AS2 relieves chronic intermittent hypoxia (CIH)-induced lung inflammation. METHODS Male Sprague Dawley rats were used to establisha CIH rat model. Hematoxylin and Eosin staining was used on the lung tissue injury to determine the successful construction of CIH animal model. Arterial partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2) were measured. HOXA-AS2 was overexpressed to evaluate its role in the progression and development of CIH. T cell differentiation and cytokine production were determined using flow cytometry. Cell apoptosis was determined using terminal deoxynucleotidyl transferase dUTP nick end labelling assay kit. The target of HOXA-AS2 and miR-17-5p was predicted by the Encyclopedia of RNA Interactomes (ENCORI) and confirmed using luciferase assay. RESULTS HOXA-AS2 was downregulated in CIH rat models. Lung tissue injury was observed in CIH rats, and the injury was attenuated by the overexpression of HOXA-AS2. PaO2 was reduced and PaCO2 was induced in CIH rats, which was reversed by the overexpression of HOXA-AS2. The overexpression of HOXA-AS2 inhibited CIH-induced cell apoptosis. It also reversed alterations in the levels of interferon gamma (IFNγ), interleukin (IL)-2, IL-6, IL-1β, tumor necrosis factor alpha (TNF-α), and transforming growth factor beta1 (TGF-β1) in rats caused by CIH. The overexpression of HOXA-AS2 prevented the induction in CD4+ IFN-γ+ T cells and reduction in CD4+TGF-β1+ T cells. The overexpression of HOXA-AS2 upregulated tumor necrosis factor-alpha-induced protein 8-like 2 (tipe2) key regulator through directly targeting miR-17-5p. Further experiments proved that tipe2 was the direct target of miR-17-5p. CONCLUSION This study manifested that HOXA-AS2 acted as an anti-inflammatory regulator and protected lung tissue injury from CIH in the rat model; this was mediated by upregulation of tipe2 through directly targeting miR-17-5p. HOXA-AS2 upregulated the expression of tipe2, providing new understanding and therapeutic target for CIH.
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Tie Y, Tang F, Peng D, Zhang Y, Shi H. TGF-beta signal transduction: biology, function and therapy for diseases. Mol Biomed 2022; 3:45. [PMID: 36534225 PMCID: PMC9761655 DOI: 10.1186/s43556-022-00109-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/15/2022] [Indexed: 12/23/2022] Open
Abstract
The transforming growth factor beta (TGF-β) is a crucial cytokine that get increasing concern in recent years to treat human diseases. This signal controls multiple cellular responses during embryonic development and tissue homeostasis through canonical and/or noncanonical signaling pathways. Dysregulated TGF-β signal plays an essential role in contributing to fibrosis via promoting the extracellular matrix deposition, and tumor progression via inducing the epithelial-to-mesenchymal transition, immunosuppression, and neovascularization at the advanced stage of cancer. Besides, the dysregulation of TGF-beta signal also involves in other human diseases including anemia, inflammatory disease, wound healing and cardiovascular disease et al. Therefore, this signal is proposed to be a promising therapeutic target in these diseases. Recently, multiple strategies targeting TGF-β signals including neutralizing antibodies, ligand traps, small-molecule receptor kinase inhibitors targeting ligand-receptor signaling pathways, antisense oligonucleotides to disrupt the production of TGF-β at the transcriptional level, and vaccine are under evaluation of safety and efficacy for the forementioned diseases in clinical trials. Here, in this review, we firstly summarized the biology and function of TGF-β in physiological and pathological conditions, elaborated TGF-β associated signal transduction. And then, we analyzed the current advances in preclinical studies and clinical strategies targeting TGF-β signal transduction to treat diseases.
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Affiliation(s)
- Yan Tie
- grid.13291.380000 0001 0807 1581Department of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, No.37 Guo Xue Xiang, Chengdu, 610041 China
| | - Fan Tang
- grid.13291.380000 0001 0807 1581Department of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, No.37 Guo Xue Xiang, Chengdu, 610041 China ,grid.13291.380000 0001 0807 1581Orthopaedic Research Institute, Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, China
| | - Dandan Peng
- grid.13291.380000 0001 0807 1581Department of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, No.37 Guo Xue Xiang, Chengdu, 610041 China
| | - Ye Zhang
- grid.506261.60000 0001 0706 7839Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021 China
| | - Huashan Shi
- grid.13291.380000 0001 0807 1581Department of Biotherapy, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, No.37 Guo Xue Xiang, Chengdu, 610041 China
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Atreya I, Neurath MF. How the Tumor Micromilieu Modulates the Recruitment and Activation of Colorectal Cancer-Infiltrating Lymphocytes. Biomedicines 2022; 10:biomedicines10112940. [PMID: 36428508 PMCID: PMC9687992 DOI: 10.3390/biomedicines10112940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022] Open
Abstract
The successful treatment of advanced colorectal cancer disease still represents an insufficiently solved clinical challenge, which is further complicated by the fact that the majority of malignant colon tumors show only relatively low immunogenicity and therefore have only limited responsiveness to immunotherapeutic approaches, such as, for instance, the use of checkpoint inhibitors. As it has been well established over the past two decades that the local tumor microenvironment and, in particular, the quantity, quality, and activation status of intratumoral immune cells critically influence the clinical prognosis of patients diagnosed with colorectal cancer and their individual benefits from immunotherapy, the enhancement of the intratumoral accumulation of cytolytic effector T lymphocytes and other cellular mediators of the antitumor immune response has emerged as a targeted objective. For the future identification and clinical validation of novel therapeutic target structures, it will thus be essential to further decipher the molecular mechanisms and cellular interactions in the intestinal tumor microenvironment, which are crucially involved in immune cell recruitment and activation. In this context, our review article aims at providing an overview of the key chemokines and cytokines whose presence in the tumor micromilieu relevantly modulates the numeric composition and antitumor capacity of tumor-infiltrating lymphocytes.
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Affiliation(s)
- Imke Atreya
- Department of Medicine 1, Erlangen University Hospital, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
- Deutsches Zentrum Immuntherapie (DZI), Erlangen University Hospital, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Markus F. Neurath
- Department of Medicine 1, Erlangen University Hospital, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
- Deutsches Zentrum Immuntherapie (DZI), Erlangen University Hospital, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
- Correspondence: ; Tel.: +49-9131-8535204; Fax: +49-9131-8535209
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Lu SY, Liu Y, Tang S, Zhang W, Yu Q, Shi C, Cheong KL. Gracilaria lemaneiformis polysaccharides alleviate colitis by modulating the gut microbiota and intestinal barrier in mice. Food Chem X 2022; 13:100197. [PMID: 35498989 PMCID: PMC9039929 DOI: 10.1016/j.fochx.2021.100197] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 02/05/2023] Open
Abstract
Gracilaria lemaneiformis polysaccharide (GLP) has varieties of antioxidation, however, the therapeutic effects of GLP on ulcerative colitis (UC) and the potential mechanisms involved are still incomplete. In the study, the analysis of the ζ-potential, thermal, and morphology properties demonstrated that GLP was a negatively charged polymer, and had great thermostability and irregular network. Moreover, the GLP treatment has the effects of reducing the severity of colitis caused by dextran sulfate sodium by alleviating the colon damage of mice, and increasing the amount of short-chain fatty acids in the intestines, alleviating histopathological inflammation. The sequencing results and α-diversity analysis showed that GLP could improve biodiversity, restore the abundance of Bacteroidetes, and decrease the proportion of Firmicutes. The level of CCL-25 and CCR-9 were inhibited, CD40 and TGF-β1 were increased. In summary, GLP has potentiality to be utilized as a hopeful functional food to the UC patients.
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Affiliation(s)
- Si-Yuan Lu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
| | - Shijie Tang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, China
| | - Wancong Zhang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong, China
- Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, China
| | - Qiuyong Yu
- Maynntetra (Shantou) Bio-technology Co., Ltd., Shantou, Guangdong, China
| | - Changqi Shi
- Maynntetra (Shantou) Bio-technology Co., Ltd., Shantou, Guangdong, China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, China
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Sherman KE, Abdel-Hameed E, Rouster SD, Shata MTM, Blackard JT, Safaie P, Kroner B, Preiss L, Horn PS, Kottilil S. Improvement in Hepatic Fibrosis Biomarkers Associated With Chemokine Receptor Inactivation Through Mutation or Therapeutic Blockade. Clin Infect Dis 2020; 68:1911-1918. [PMID: 30239650 DOI: 10.1093/cid/ciy807] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/19/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The C-C chemokine receptor Type 5 (CCR5) is a key receptor for human immunodeficiency virus type 1 (HIV-1) entry into T-cells and a variant allele, CCR5 delta-32, is associated with decreased viral replication and disease progression. Active HIV-1 replication is highly associated with accelerated rates of hepatic fibrosis. We postulated that CCR5 plays a role in the development of hepatic fibrosis and evaluated the longitudinal effect of natural or drug-induced CCR5 mutation and blockade on biomarkers of liver fibrosis in HIV-1 patients. METHODS To accomplish this goal, we examined 2 distinct cohorts. First, we evaluated fibrosis markers in the Multicenter Hemophilia Cohort Studies (MHCS), which included subjects with HIV and hepatitis C virus (HCV) coinfection with the CCR5 delta-32 allele. We also evaluated an HIV-1 infected cohort that was treated with a dual CCR5/CCR2 antagonist, cenicriviroc. The enhanced liver fibrosis (ELF) index was validated against liver histology obtained from HCV/HIV and HCV patients and demonstrated strong correlation with fibrosis stage. RESULTS In both the MHCS patients and patients treated with cenicriviroc, CCR5 mutation or blockade was associated with a significant decrease in the ELF index. Among the patients with the delta-32 allele, the ELF index rate significantly decreased in sequential samples as compared to CCR5 wild-type patients (P = .043). This was not observed in control subjects treated with efavirenz nor with a lower dose of 100 mg cenicriviroc. CONCLUSION These findings suggest that hepatic fibrosis in HIV-1 infected patients can be modulated by the mutation of CCR5 and/or use of CCR5/CCR2 blockade agents. CLINICAL TRIALS REGISTRATION NCT01338883.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Paul S Horn
- Cincinnati Children's Hospital Medical Center, Ohio
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Lee H, Kim H, Seo J, Choi K, Lee Y, Park K, Kim S, Mobasheri A, Choi H. TissueGene-C promotes an anti-inflammatory micro-environment in a rat monoiodoacetate model of osteoarthritis via polarization of M2 macrophages leading to pain relief and structural improvement. Inflammopharmacology 2020; 28:1237-52. [PMID: 32696209 DOI: 10.1007/s10787-020-00738-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/23/2020] [Indexed: 12/13/2022]
Abstract
Osteoarthritis (OA) is the most common form of arthritis, characterized by cartilage destruction, pain and inflammation in the joints. Existing medications can provide relief from the symptoms, but their effects on the progression of the disease are limited. TissueGene-C (TG-C) is a novel cell and gene therapy for the treatment of OA, comprising a mixture of human allogeneic chondrocytes and irradiated cells engineered to overexpress transforming growth factor-β1 (TGF-β1). This study aims to investigate the efficacy and mechanism of action of TG-C in a rat model of OA. Using the monosodium-iodoacetate (MIA) model of OA, we examined whether TG-C could improve OA symptoms and cartilage structure in rats. Our results showed that TG-C provided pain relief and cartilage structural improvement in the MIA OA model over 56 days. In parallel with these long-term effects, cytokine profiles obtained on day 4 revealed increased expression of interleukin-10 (IL-10), an anti-inflammatory cytokine, in the synovial lavage fluid. Moreover, the increased levels of TGF-β1 and IL-10 caused by TG-C induced the expression of arginase 1, a marker of M2 macrophages, and decreased the expression of CD86, a marker of M1 macrophages. These results suggest that TG-C exerts a beneficial effect on OA by inducing a M2 macrophage-dominant micro-environment. Cell therapy using TG-C may be a promising strategy for targeting the underlying pathogenic mechanisms of OA, reducing pain, improving function, and creating a pro-anabolic micro-environment. This environment supports cartilage structure regeneration and is worthy of further evaluation in future clinical trials.
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Beller A, Kruglov A, Durek P, von Goetze V, Werner K, Heinz GA, Ninnemann J, Lehmann K, Maier R, Hoffmann U, Riedel R, Heiking K, Zimmermann J, Siegmund B, Mashreghi MF, Radbruch A, Chang HD. Specific microbiota enhances intestinal IgA levels by inducing TGF-β in T follicular helper cells of Peyer's patches in mice. Eur J Immunol 2020; 50:783-794. [PMID: 32065660 DOI: 10.1002/eji.201948474] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 11/15/2019] [Accepted: 02/14/2020] [Indexed: 12/31/2022]
Abstract
In humans and mice, mucosal immune responses are dominated by IgA antibodies and the cytokine TGF-β, suppressing unwanted immune reactions but also targeting Ig class switching to IgA. It had been suggested that eosinophils promote the generation and maintenance of mucosal IgA-expressing plasma cells. Here, we demonstrate that not eosinophils, but specific bacteria determine mucosal IgA production. Co-housing of eosinophil-deficient mice with mice having high intestinal IgA levels, as well as the intentional microbiota transfer induces TGF-β expression in intestinal T follicular helper cells, thereby promoting IgA class switching in Peyer's patches, enhancing IgA+ plasma cell numbers in the small intestinal lamina propria and levels of mucosal IgA. We show that bacteria highly enriched for the genus Anaeroplasma are sufficient to induce these changes and enhance IgA levels when adoptively transferred. Thus, specific members of the intestinal microbiota and not the microbiota as such regulate gut homeostasis, by promoting the expression of immune-regulatory TGF-β and of mucosal IgA.
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Affiliation(s)
- Alexander Beller
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Andrey Kruglov
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany.,Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow, Russia.,Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
| | - Pawel Durek
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Victoria von Goetze
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Katharina Werner
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Gitta Anne Heinz
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Justus Ninnemann
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Katrin Lehmann
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - René Maier
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Ute Hoffmann
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - René Riedel
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany.,Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Kevin Heiking
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Jakob Zimmermann
- Maurice Müller Laboratories, Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Britta Siegmund
- Medical Department I (Gastroenterology, Infectiology, and Rheumatology), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Mir-Farzin Mashreghi
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Andreas Radbruch
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
| | - Hyun-Dong Chang
- Deutsches Rheuma-Forschungszentrum Berlin, a Leibniz Institute (DRFZ), Berlin, Germany
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Trovato R, Canè S, Petrova V, Sartoris S, Ugel S, De Sanctis F. The Engagement Between MDSCs and Metastases: Partners in Crime. Front Oncol 2020; 10:165. [PMID: 32133298 PMCID: PMC7040035 DOI: 10.3389/fonc.2020.00165] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 01/30/2020] [Indexed: 12/18/2022] Open
Abstract
Tumor metastases represent the major cause of cancer-related mortality, confirming the urgent need to identify key molecular pathways and cell-associated networks during the early phases of the metastatic process to develop new strategies to either prevent or control distal cancer spread. Several data revealed the ability of cancer cells to establish a favorable microenvironment, before their arrival in distant organs, by manipulating the cell composition and function of the new host tissue where cancer cells can survive and outgrow. This predetermined environment is termed “pre-metastatic niche” (pMN). pMN development requires that tumor-derived soluble factors, like cytokines, growth-factors and extracellular vesicles, genetically and epigenetically re-program not only resident cells (i.e., fibroblasts) but also non-resident cells such as bone marrow-derived cells. Indeed, by promoting an “emergency” myelopoiesis, cancer cells switch the steady state production of blood cells toward the generation of pro-tumor circulating myeloid cells defined as myeloid-derived suppressor cells (MDSCs) able to sustain tumor growth and dissemination. MDSCs are a heterogeneous subset of myeloid cells with immunosuppressive properties that sustain metastatic process. In this review, we discuss current understandings of how MDSCs shape and promote metastatic dissemination acting in each fundamental steps of cancer progression from primary tumor to metastatic disease.
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Affiliation(s)
- Rosalinda Trovato
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
| | - Stefania Canè
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
| | - Varvara Petrova
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
| | - Silvia Sartoris
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
| | - Stefano Ugel
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
| | - Francesco De Sanctis
- Section of Immunology, Department of Medicine, University of Verona, Verona, Italy
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An JH, Li Q, Ryu MO, Nam AR, Bhang DH, Jung YC, Song WJ, Youn HY. TSG-6 in extracellular vesicles from canine mesenchymal stem/stromal is a major factor in relieving DSS-induced colitis. PLoS One 2020; 15:e0220756. [PMID: 32040478 DOI: 10.1371/journal.pone.0220756] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 12/05/2019] [Indexed: 02/07/2023] Open
Abstract
Adipose tissue derived mesenchymal stem/stromal cell (ASC)-derived extracellular vesicles (EV) have been reported to be beneficial against dextran sulfate sodium (DSS)-induced colitis in mice. However, the underlying mechanisms have not been fully elucidated. We hypothesize that the tumor necrosis factor-α-stimulated gene/protein 6 (TSG-6) in EVs is a key factor influencing the alleviation of colitis symptoms. DSS-induced colitis mice (C57BL/6, male, Naïve = 6, Sham = 8, PBS = 8 EV = 8, CTL-EV = 8, TSG-6 depleted EV = 8) were intraperitoneally administered EVs (100 ug/mice) on day 1, 3, and 5; colon tissues were collected on day 10 for histopathological, RT-qPCR, western blot and immunofluorescence analyses. In mice injected with EV, inflammation was alleviated. Indeed, EVs regulated the levels of pro- and anti-inflammatory cytokines, such as TNF-α, IL-1β, IFN-γ, IL-6, and IL-10 in inflamed colons. However, when injected with TSG-6 depleted EV, the degree of inflammatory relief was reduced. Furthermore, TSG-6 in EVs plays a key role in increasing regulatory T cells (Tregs) and polarizing macrophage from M1 to M2 in the colon. In conclusion, this study shows that TSG-6 in EVs is a major factor in the relief of DSS-induced colitis, by increasing the number of Tregs and macrophage polarization from M1 to M2 in the colon.
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Shata MTM, Abdel-Hameed EA, Rouster SD, Yu L, Liang M, Song E, Esser MT, Shire N, Sherman KE. HBV and HIV/HBV Infected Patients Have Distinct Immune Exhaustion and Apoptotic Serum Biomarker Profiles. Pathog Immun 2019; 4:39-65. [PMID: 30815625 PMCID: PMC6388707 DOI: 10.20411/pai.v4i1.267] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background: Hepatitis B virus (HBV) infection is a leading cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma worldwide. Due to their shared routes of transmission, approximately 10% of HIV-infected patients worldwide are chronically coinfected with HBV. Additionally, liver disease has become a major cause of morbidity and mortality in HBV/HIV coinfected patients due to prolonged survival with the success of antiretroviral therapy. The relationship between immune exhaustion markers (PD-1/PD-L1) and apoptotic markers such as Fas/FasL, TGFβ1, TNF-α, and Th1/Th2 cytokines are not clearly delineated in HBV/HIV coinfection. Methods: Levels of soluble Fas/FasL, TGFβ1, TNF-α, and sPD-1/sPD-L1 as well as Th1 and Th2 cytokines were evaluated in the sera of HBV-monoinfected (n = 30) and HBV/HIV-coinfected (n = 15) patients and compared to levels in healthy controls (n = 20). Results: HBV-monoinfected patients had significantly lower levels of the anti-inflammatory cytokine IL-4 (P < 0.05) and higher levels of apoptotic markers sFas, sFasL, and TGFβ-1 (P < 0.001) compared to healthy controls. Coinfection with HIV was associated with higher levels of sFas, TNF-α, and sPD-L1 (P < 0.005), and higher levels of the pro-inflammatory cytokines IL-6, IL-8, and IL-12p70 (P < 0.05) compared to healthy controls. Patients with HBV infection had a unique biomarker clustering profile comprised of IFN-γ, IL12p70, IL-10, IL-6, and TNF-α that was distinct from the profile of the healthy controls, and the unique HIV/HBV profile comprised GM-CSF, IL-4, IL-2, IFN-γ, IL12p70, IL-7, IL-10, and IL-1β. In HBV monoinfection a significant correlation between sFasL and PD1(r = 0.46, P = < 0.05) and between sFas and PDL1 (r = 0.48, P = <0.01) was observed. Conclusion: HBV-infected and HBV/HIV-coinfected patients have unique apoptosis and inflammatory biomarker profiles that distinguish them from each other and healthy controls. The utilization of those unique biomarker profiles for monitoring disease progression or identifying individuals who may benefit from novel immunotherapies such as anti-PD-L1 or anti-PD-1 checkpoint inhibitors appears promising and warrants further investigation.
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Affiliation(s)
| | | | - Susan D Rouster
- Internal medicine; University of Cincinnati; Cincinnati, Ohio
| | - Li Yu
- MedImmune; Gaithersburg, Maryland
| | - Meina Liang
- MedImmune; 121 Oyster Point Boulevard; South San Francisco, California
| | - Esther Song
- MedImmune; 121 Oyster Point Boulevard; South San Francisco, California
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11
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Kern L, Mittenbühler MJ, Vesting AJ, Ostermann AL, Wunderlich CM, Wunderlich FT. Obesity-Induced TNFα and IL-6 Signaling: The Missing Link between Obesity and Inflammation-Driven Liver and Colorectal Cancers. Cancers (Basel) 2018; 11:E24. [PMID: 30591653 DOI: 10.3390/cancers11010024] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 02/06/2023] Open
Abstract
Obesity promotes the development of numerous cancers, such as liver and colorectal cancers, which is at least partly due to obesity-induced, chronic, low-grade inflammation. In particular, the recruitment and activation of immune cell subsets in the white adipose tissue systemically increase proinflammatory cytokines, such as tumor necrosis factor α (TNFα) and interleukin-6 (IL-6). These proinflammatory cytokines not only impair insulin action in metabolic tissues, but also favor cancer development. Here, we review the current state of knowledge on how obesity affects inflammatory TNFα and IL-6 signaling in hepatocellular carcinoma and colorectal cancers.
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Huang J, Jia R, Brunner T. Local synthesis of immunosuppressive glucocorticoids in the intestinal epithelium regulates anti-viral immune responses. Cell Immunol 2018; 334:1-10. [PMID: 30144940 DOI: 10.1016/j.cellimm.2018.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/10/2018] [Accepted: 08/17/2018] [Indexed: 12/21/2022]
Abstract
The nuclear receptor Small Heterodimer Partner (SHP) is a transcriptional target and inhibitor of Liver Receptor Homolog 1 (LRH-1), the transcriptional regulator of intestinal glucocorticoid (GC) synthesis. The role of SHP in the regulation of intestinal GC synthesis and its impact on T cell-mediated anti-viral immune responses in the intestinal mucosa are currently not understood. Lymphocytic choriomeningitis virus (LCMV) infection promoted intestinal GC synthesis, which was enhanced in SHP-deficient mice. Intestinal GC suppressed the expansion and altered the activation of virus-specific T cells. In contrast, deletion of LRH-1 reduced intestinal GC synthesis and accelerated the expansion of cytotoxic T cells post LCMV infection. These findings show that virus-induced intestinal GC synthesis is controlled by LRH-1 and SHP, and that local steroidogenesis contributes to the maintenance of intestinal immune homeostasis. Thus, LRH-1-regulated intestinal GC synthesis could represent an interesting therapeutic target in the treatment of inflammatory disorders.
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Affiliation(s)
- Juan Huang
- Biochemical Pharmacology, Department of Biology, University of Konstanz, Germany; Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, China
| | - Renyong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu, China
| | - Thomas Brunner
- Biochemical Pharmacology, Department of Biology, University of Konstanz, Germany.
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13
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Wang Z, Zhang H, Liu R, Qian T, Liu J, Huang E, Lu Z, Zhao C, Wang L, Chu Y. Peyer's patches-derived CD11b + B cells recruit regulatory T cells through CXCL9 in dextran sulphate sodium-induced colitis. Immunology 2018; 155:356-366. [PMID: 29969845 DOI: 10.1111/imm.12977] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/22/2018] [Accepted: 06/26/2018] [Indexed: 12/13/2022] Open
Abstract
Regulatory T (Treg) cells play an essential role in the maintenance of intestinal homeostasis. In Peyer's patches (PPs), which comprise the most important IgA induction site in the gut-associated lymphoid tissue, Treg cells promote IgA isotype switching. However, the mechanisms underlying their entry into PPs and isotype switching facilitation in activated B cells remain unknown. This study, based on the dextran sulphate sodium (DSS)-induced colitis model, revealed that Treg cells are significantly increased in PPs, along with CD11b+ B-cell induction. Immunofluorescence staining showed that infiltrated Treg cells were located around CD11b+ B cells and produced transforming growth factor-β, thereby inducing IgA+ B cells. Furthermore, in vivo and in vitro studies revealed that CD11b+ B cells in PPs had the capacity to recruit Treg cells into PPs rather than promoting their proliferation. Finally, we found that Treg cell recruitment was mediated by the chemokine CXCL9 derived from CD11b+ B cells in PPs. These findings demonstrate that CD11b+ B cells induced in PPs during colitis actively recruit Treg cells to accomplish IgA isotype switch in a CXCL9-dependent manner.
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Affiliation(s)
- Zhiming Wang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hushan Zhang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Tingting Qian
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jiajing Liu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Enyu Huang
- Department of Pathology, The University of Hong Kong, Hong Kong, China
| | - Zhou Lu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chujun Zhao
- Northfield Mount Hermon School, Mount Hermon, MA, USA
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Centre, Fudan University, Shanghai, China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, Institute of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Centre, Fudan University, Shanghai, China
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14
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Wang S, Chen YG. BMP signaling in homeostasis, transformation and inflammatory response of intestinal epithelium. Sci China Life Sci 2018; 61:800-807. [PMID: 29855793 DOI: 10.1007/s11427-018-9310-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 04/03/2018] [Indexed: 12/19/2022]
Abstract
Intestine is the organ for food digestion, nutrient absorption and pathogen defense, in which processes intestinal epithelium plays a central role. Intestinal epithelium undergoes fast turnover, and its homeostasis is regulated by multiple signaling pathways, including Wnt, Notch, Hippo and BMP pathways. BMP signaling has been shown to negatively regulate self-renewal of Lgr5+ intestinal stem cells, constrains the expansion of intestinal epithelium, therefore attenuating colorectal cancer formation. BMPs and their receptors are expressed in both epithelial and mesenchymal cells, suggesting a two-way interaction between the mesenchyme and epithelium. In this review, we summarize the current understanding of the function of BMP signaling in homeostasis, cancerous transformation and inflammatory response of intestinal epithelium.
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Affiliation(s)
- Shan Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
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15
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Jung NC, Lee JH, Chung KH, Kwak YS, Lim DS. Dendritic Cell-Based Immunotherapy for Solid Tumors. Transl Oncol 2018; 11:686-690. [PMID: 29627706 PMCID: PMC6154348 DOI: 10.1016/j.tranon.2018.03.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/13/2018] [Accepted: 03/19/2018] [Indexed: 12/19/2022] Open
Abstract
As a treatment for solid tumors, dendritic cell (DC)-based immunotherapy has not been as effective as expected. Here, we review the reasons underlying the limitations of DC-based immunotherapy for solid tumors and ask what can be done to improve immune cell-based cancer therapies. Several reports show that, rather than a lack of immune induction, the limited efficacy of DC-based immunotherapy in cases of renal cell carcinoma (RCC) likely results from inhibition of immune responses by tumor-secreted TGF-β and an increase in the number of regulatory T (Treg) cells in and around the solid tumor. Indeed, unlike DC therapy for solid tumors, cytotoxic T lymphocyte (CTL) responses induced by DC therapy inhibit tumor recurrence after surgery; CTL responses also limit tumor metastasis induced by additional tumor-challenge in RCC tumor-bearing mice. Here, we discuss the mechanisms underlying the poor efficacy of DC-based therapy for solid tumors and stress the need for new and improved DC immunotherapies and/or combination therapies with killer cells to treat resistant solid tumors.
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Affiliation(s)
- Nam-Chul Jung
- Department of Biotechnology, CHA University, Seongnam, Gyeonggi-do 13488, Republic of Korea; Pharos Vaccine Inc., Seongnam, Gyeonggi-do 13215, Republic of Korea
| | - Jun-Ho Lee
- Department of Biotechnology, CHA University, Seongnam, Gyeonggi-do 13488, Republic of Korea; Pharos Vaccine Inc., Seongnam, Gyeonggi-do 13215, Republic of Korea
| | - Kwang-Hoe Chung
- Department of Biotechnology, CHA University, Seongnam, Gyeonggi-do 13488, Republic of Korea
| | - Yi Sub Kwak
- Department of Physical Education, Dong-Eui University, College of Arts and Sports Science, Busan 47340, Republic of Korea
| | - Dae-Seog Lim
- Department of Biotechnology, CHA University, Seongnam, Gyeonggi-do 13488, Republic of Korea.
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16
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Tian L, Xie XH, Zhu ZH. Calotropin regulates the apoptosis of non‑small cell cancer by regulating the cytotoxic T‑lymphocyte associated antigen 4‑mediated TGF‑β/ERK signaling pathway. Mol Med Rep 2018; 17:7683-7691. [PMID: 29620207 PMCID: PMC5983968 DOI: 10.3892/mmr.2018.8853] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/09/2018] [Indexed: 01/27/2023] Open
Abstract
Non-small-cell lung cancer (NSCLC) is one of the most common malignancies that is responsible for a high level of cancer-associated mortalities worldwide. Previous evidence has shown that Calotropin is an upstream activator of protein kinase B, which can further inhibit the growth and promote the apoptosis of NSCLC cells. In the present study, the efficacy of Calotropin on growth, aggressiveness and apoptosis of NSCLC cells was investigated, as well as the potential underlying mechanism. The results demonstrated that Calotropin inhibited H358 cell growth, migration and invasion. Flow cytometry assay showed that Calotropin promoted the apoptosis of H358 cells in vitro. Western blot analysis demonstrated that Calotropin inhibited fibronectin (FN), Vimentin (VIM) and E-cadherin (Eca) protein expression levels in H358 cells in vitro. In addition, Calotropin treatment upregulated pro-apoptosis gene expression, including caspase-3, caspase-8 and apoptotic protease activating factor-1, and downregulated anti-apoptosis gene expression, including P53, B-cell lymphoma (Bcl) 2 and Bcl-2-like protein 2 in H358 cells. The results also revealed that the expression levels of cytotoxic T-lymphocyte associated antigen 4 (CTLA-4) were decreased by Calotropin treatment in H358 cells. Analyses of the underlying mechanism indicated that Calotropin inhibited transforming growth factor-β (TGF-β) and extracellular signal-regulated kinase (ERK) expression. Overexpression of CTLA-4 inhibited Calotropin-mediated downregulation of TGF-β and ERK expression in H358 cells. In vivo assay revealed that Calotropin administration significantly inhibited tumor growth and prolonged animal survival over the 120-day observation period. Immunohistochemistry demonstrated that the number of apoptotic cells increased and the expression levels of CTLA-4 were decreased in the Calotropin-treated tumor group when compared with control. In addition, the expression levels of TGF-β and ERK were downregulated in the Calotropin-treated tumor group compared with control. In conclusion, the results of the present study indicated that Calotropin administration regulated NSCLC apoptosis by downregulating the CTLA-4-mediated TGF-β/ERK signaling pathway, suggesting that Calotropin may be a potential anti-cancer agent for the treatment of NSCLC.
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Affiliation(s)
- Lu Tian
- Department of Respiratory Medicine, The Fourth People's Hospital of Guiyang, Guiyang, Guizhou 550002, P.R. China
| | - Xiao-Hong Xie
- Department of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Institute of Respiratory Disease, Guangzhou, Guangdong 510120, P.R. China
| | - Ze-Hao Zhu
- Department of Respiratory Medicine, The Affiliated Zhoushan Hospital of Wenzhou Medical University, Zhoushan, Zhejiang 316000, P.R. China
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17
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Allen JM, Mailing LJ, Cohrs J, Salmonson C, Fryer JD, Nehra V, Hale VL, Kashyap P, White BA, Woods JA. Exercise training-induced modification of the gut microbiota persists after microbiota colonization and attenuates the response to chemically-induced colitis in gnotobiotic mice. Gut Microbes 2017; 9:115-130. [PMID: 28862530 PMCID: PMC5989796 DOI: 10.1080/19490976.2017.1372077] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Exercise reduces the risk of inflammatory disease by modulating a variety of tissue and cell types, including those within the gastrointestinal tract. Recent data indicates that exercise can also alter the gut microbiota, but little is known as to whether these changes affect host function. Here, we use a germ-free (GF) animal model to test whether exercise-induced modifications in the gut microbiota can directly affect host responses to microbiota colonization and chemically-induced colitis. Donor mice (n = 19) received access to a running wheel (n = 10) or remained without access (n = 9) for a period of six weeks. After euthanasia, cecal contents were pooled by activity treatment and transplanted into two separate cohorts of GF mice. Two experiments were then conducted. First, mice were euthanized five weeks after the microbiota transplant and tissues were collected for analysis. A second cohort of GF mice were colonized by donor microbiotas for four weeks before dextran-sodium-sulfate was administered to induce acute colitis, after which mice were euthanized for tissue analysis. We observed that microbial transplants from donor (exercised or control) mice led to differences in microbiota β-diversity, metabolite profiles, colon inflammation, and body mass in recipient mice five weeks after colonization. We also demonstrate that colonization of mice with a gut microbiota from exercise-trained mice led to an attenuated response to chemical colitis, evidenced by reduced colon shortening, attenuated mucus depletion and augmented expression of cytokines involved in tissue regeneration. Exercise-induced modifications in the gut microbiota can mediate host-microbial interactions with potentially beneficial outcomes for the host.
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Affiliation(s)
- J. M. Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - L. J. Mailing
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - J. Cohrs
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - C. Salmonson
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - J. D. Fryer
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - V. Nehra
- Department of Surgery, Mayo Clinic, Rochester, MN, USA
| | - V. L. Hale
- Department of Veterinary Preventative Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA
| | - P. Kashyap
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - B. A. White
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - J. A. Woods
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,CONTACT J. A. Woods, PhD , 906 S. Goodwin Ave., 348 Louise Freer Hall, University of Illinois at Urbana-Champaign, Urbana IL 61801
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18
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Esebanmen GE, Langridge WHR. Mechanism of chimeric vaccine stimulation of indoleamine 2,3-dioxygenase biosynthesis in human dendritic cells is independent of TGF-β signaling. Cell Immunol 2017; 319:43-52. [PMID: 28864263 DOI: 10.1016/j.cellimm.2017.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 07/27/2017] [Accepted: 08/18/2017] [Indexed: 01/17/2023]
Abstract
Cholera toxin B subunit fusion to autoantigens such as proinsulin (CTB-INS) down regulate dendritic cell (DC) activation and stimulate synthesis of DC immunosuppressive cytokines. Recent studies of CTB-INS induction of immune tolerance in human DCs indicate that increased biosynthesis of indoleamine 2,3-dioxygenase (IDO1) may play an important role in CTB-INS vaccine suppression of DC activation. Studies in murine models suggest a role for transforming growth factor beta (TGF-β) in the stimulation of IDO1 biosynthesis, for the induction of tolerance in DCs. Here, we investigated the contribution of TGF-β superfamily proteins to CTB-INS induction of IDO1 biosynthesis in human monocyte-derived DCs (moDCs). We show that CTB-INS upregulates the level of TGF-β1, activin-A and the TGF-β activator, integrin αvβ8 in human DCs. However, inhibition of endogenous TGF-β, activin-A or addition of biologically active TGF-β1, and activin-A, did not inhibit or stimulate IDO1 biosynthesis in human DCs treated with CTB-INS. While inhibition with the kinase inhibitor, RepSox, blocked SMAD2/3 phosphorylation and diminished IDO1 biosynthesis in a concentration dependent manner. Specific blocking of the TGF-β type 1 kinase receptor with SB-431542 did not arrest IDO1 biosynthesis, suggesting the involvement of a different kinase pathway other than TGF-β type 1 receptor kinase in CTB-INS induction of IDO1 in human moDCs. Together, our experimental findings identify additional immunoregulatory proteins induced by the CTB-INS fusion protein, suggesting CTB-INS may utilize multiple mechanisms in the induction of tolerance in human moDCs.
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19
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Luo C, Zhang H. The Role of Proinflammatory Pathways in the Pathogenesis of Colitis-Associated Colorectal Cancer. Mediators Inflamm. 2017;2017:5126048. [PMID: 28852270 PMCID: PMC5568615 DOI: 10.1155/2017/5126048] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 06/30/2017] [Accepted: 07/17/2017] [Indexed: 02/05/2023] Open
Abstract
Patients with inflammatory bowel disease (IBD) are at an increased risk of developing colorectal cancer (CRC). The risk factors of CRC in IBD patients include long disease duration, extensive colitis, severe histological inflammation, and coexistence with primary sclerosing cholangitis (PSC). Several molecular pathways that contribute to sporadic CRC are also involved in the pathogenesis of colitis-associated CRC. It is well established that long-standing chronic inflammation is a key predisposing factor of CRC in IBD. Proinflammatory pathways, including nuclear factor kappa B (NF-κB), IL-6/STAT3, cyclooxygenase-2 (COX-2)/PGE2, and IL-23/Th17, promote tumorigenesis by inducing the production of inflammatory mediators, upregulating the expression of antiapoptotic genes, and stimulating cell proliferation as well as angiogenesis. Better understanding of the underlying mechanisms may provide some promising targets for prevention and therapy. This review aims to elucidate the role of these signaling pathways in the pathogenesis of colitis-associated CRC using evidence-based approaches.
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Abstract
Myeloid-derived suppressor cells (MDSCs) represent a heterogeneous, immune-suppressive leukocyte population that develops systemically and infiltrates tumors. MDSCs can restrain the immune response through different mechanisms including essential metabolite consumption, reactive oxygen and nitrogen species production, as well as display of inhibitory surface molecules that alter T-cell trafficking and viability. Moreover, MDSCs play a role in tumor progression, acting directly on tumor cells and promoting cancer stemness, angiogenesis, stroma deposition, epithelial-to-mesenchymal transition, and metastasis formation. Many biological and pharmaceutical drugs affect MDSC expansion and functions in preclinical tumor models and patients, often reversing host immune dysfunctions and allowing a more effective tumor immunotherapy.
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Peloso A, Urbani L, Cravedi P, Katari R, Maghsoudlou P, Fallas ME, Sordi V, Citro A, Purroy C, Niu G, McQuilling JP, Sittadjody S, Farney AC, Iskandar SS, Zambon JP, Rogers J, Stratta RJ, Opara EC, Piemonti L, Furdui CM, Soker S, De Coppi P, Orlando G. The Human Pancreas as a Source of Protolerogenic Extracellular Matrix Scaffold for a New-generation Bioartificial Endocrine Pancreas. Ann Surg 2016; 264:169-79. [PMID: 26649588 DOI: 10.1097/SLA.0000000000001364] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Our study aims at producing acellular extracellular matrix scaffolds from the human pancreas (hpaECMs) as a first critical step toward the production of a new-generation, fully human-derived bioartificial endocrine pancreas. In this bioartificial endocrine pancreas, the hardware will be represented by hpaECMs, whereas the software will consist in the cellular compartment generated from patient's own cells. BACKGROUND Extracellular matrix (ECM)-based scaffolds obtained through the decellularization of native organs have become the favored platform in the field of complex organ bioengineering. However, the paradigm is now switching from the porcine to the human model. METHODS To achieve our goal, human pancreata were decellularized with Triton-based solution and thoroughly characterized. Primary endpoints were complete cell and DNA clearance, preservation of ECM components, growth factors and stiffness, ability to induce angiogenesis, conservation of the framework of the innate vasculature, and immunogenicity. Secondary endpoint was hpaECMs' ability to sustain growth and function of human islet and human primary pancreatic endothelial cells. RESULTS Results show that hpaECMs can be successfully and consistently produced from human pancreata and maintain their innate molecular and spatial framework and stiffness, and vital growth factors. Importantly, hpaECMs inhibit human naïve CD4 T-cell expansion in response to polyclonal stimuli by inducing their apoptosis and promoting their conversion into regulatory T cells. hpaECMs are cytocompatible and supportive of representative pancreatic cell types. DISCUSSION We, therefore, conclude that hpaECMs has the potential to become an ideal platform for investigations aiming at the manufacturing of a regenerative medicine-inspired bioartificial endocrine pancreas.
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Abstract
Ulcerative colitis (UC) is defined as an idiopathic inflammatory disorder primarily involving the mucosa and submucosa of the colon. UC-associated colon cancers (also known as colitic cancers) develop through the inflammation-dysplasia sequence, which is a major problem affecting the prognosis of patients with UC. It is therefore very important to detect malignancy from UC at an early stage. As precancerous lesions arising in UC, there are pathological adenomatous changes, basal cell changes, in situ anaplasia, clear cell changes, and pan-cellular change. It is considered that the mutation of the p53 gene plays a crucial role, and the protein expression of p53 in dysplastic crypts may serve as a good biomarker in the early stages of UC-associated colon carcinogenesis. Immunohistochemistry for p53 is a very valuable diagnostic tool in UC-associated colon cancers. However, protein expression of p53 is not always universal, and additional methods may be required to assess p53 status in UC-associated colon cancers.
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Affiliation(s)
| | - Hiroyuki Tomita
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Masahito Shimizu
- Department of Gastroenterology/Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Takuji Tanaka
- Department of Diagnostic Pathology (DDP) & Research Center of Diagnostic Pathology (RC-DiP), Gifu Municipal Hospital, 7-1. Kashima-tyo, Gifu 500-8513, Japan.
| | - Natsuko Suzui
- Pathology Division, Gifu University Hospital, Gifu 501-1194, Japan.
| | | | - Akira Hara
- Pathology Division, Gifu University Hospital, Gifu 501-1194, Japan.
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
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Zhao HM, Wang Y, Huang XY, Huang MF, Xu R, Yue HY, Zhou BG, Huang HY, Sun QM, Liu DY. Astragalus polysaccharide attenuates rat experimental colitis by inducing regulatory T cells in intestinal Peyer’s patches. World J Gastroenterol 2016; 22:3175-3185. [PMID: 27003994 PMCID: PMC4789992 DOI: 10.3748/wjg.v22.i11.3175] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 11/25/2015] [Accepted: 01/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore probable mechanism underlying the therapeutic effect of Astragalus polysaccharide (APS) against experimental colitis.
METHODS: Thirty-two Sprague-Dawley rats were randomly divided into four groups. Colitis was induced with 2, 4, 6-trinitrobenzene sulfonic acid (TNBS). The rats with colitis were treated with 400 mg/kg of APS for 7 d. The therapeutic effect was evaluated by colonic weight, weight index of the colon, colonic length, and macroscopic and histological scores. The levels of regulatory T (Treg) cells in Peyer’s patches were measured by flow cytometry, and cytokines in colonic tissue homogenates were analyzed using enzyme-linked immunosorbent assay. The expression of related orphan receptor-γt (ROR-γt), IL-23 and STAT-5a was measured by Western blot.
RESULTS: After 7-d treatment with APS, the weight index of the colon, colonic weight, macroscopical and histological scores were decreased, while the colonic length was increased compared with the model group. The expression of interleukin (IL)-2, IL-6, IL-17, IL-23 and ROR-γt in the colonic tissues was down-regulated, but Treg cells in Peyer’s patches, TGF-β and STAT5a in the colonic tissues were up-regulated.
CONCLUSION: APS effectively ameliorates TNBS-induced experimental colitis in rats, probably through restoring the number of Treg cells, and inhibiting IL-17 levels in Peyer’s patches.
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Leonel AJ, Silva EL, Aguilar EC, Teixeira LG, Oliveira RP, Faria AMC, Cara DC, Ferreira LAM, Alvarez‐Leite JI. Systemic administration of a nanoemulsion with tributyrin reduces inflammation in experimental colitis. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201400359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alda Jusceline Leonel
- Department of Biochemistry and ImmunologyUniversidade Federal Minas GeraisBelo HorizonteBrazil
| | - Elton Luiz Silva
- Department of Pharmaceutical Products, Faculty of PharmacyUniversidade Federal Minas GeraisBelo HorizonteBrazil
| | - Edenil Costa Aguilar
- Department of Biochemistry and ImmunologyUniversidade Federal Minas GeraisBelo HorizonteBrazil
| | | | - Rafael Pires Oliveira
- Department of Biochemistry and ImmunologyUniversidade Federal Minas GeraisBelo HorizonteBrazil
| | - Ana Maria Caetano Faria
- Department of Biochemistry and ImmunologyUniversidade Federal Minas GeraisBelo HorizonteBrazil
| | - Denise Carmona Cara
- Department of Morphology, Institute of Biological SciencesUniversidade Federal Minas GeraisBelo HorizonteBrazil
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Maioli TU, Gonçalves JL, Miranda MCG, Martins VD, Horta LS, Moreira TG, Godard ALB, Santiago AF, Faria AMC. High sugar and butter (HSB) diet induces obesity and metabolic syndrome with decrease in regulatory T cells in adipose tissue of mice. Inflamm Res 2015; 65:169-78. [PMID: 26650032 DOI: 10.1007/s00011-015-0902-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 11/09/2015] [Accepted: 11/11/2015] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The purpose of the study was to develop a novel diet based on standard AIN93G diet that would be able to induce experimental obesity and impair immune regulation with high concentrations of both carbohydrate and lipids. METHODS To compare the effects of this high sugar and butter (HSB) diet with other modified diets, male C57BL/6 mice were fed either mouse chow, or AIN93G diet, or high sugar (HS) diet, or high-fat (HF) diet, or high sugar and butter (HSB) diet for 11 weeks ad libitum. HSB diet induced higher weight gain. Therefore, control AIN93G and HSB groups were chosen for additional analysis. Regulatory T cells were studied by flow cytometry, and cytokine levels were measured by ELISA. RESULTS Although HF and HSB diets were able to induce a higher weight gain compatible with obesity in treated mice, HSB-fed mice presented the higher levels of serum glucose after fasting and the lowest frequency of regulatory T cells in adipose tissue. In addition, mice that were fed HSB diet presented higher levels of cholesterol and triglycerides, hyperleptinemia, increased resistin and leptin levels as well as reduced adiponectin serum levels. Importantly, we found increased frequency of CD4(+)CD44(+) effector T cells, reduction of CD4(+)CD25(+)Foxp3(+) and Th3 regulatory T cells as well as decreased levels of IL-10 and TGF-β in adipose tissue of HSB-fed mice. CONCLUSION Therefore, HSB represents a novel model of obesity-inducing diet that was efficient in triggering alterations compatible with metabolic syndrome as well as impairment in immune regulatory parameters.
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Affiliation(s)
- Tatiani Uceli Maioli
- Departamento de Nutrição, Escola de Enfermagem, Universidade Federal de Minas Gerais, Av. Alfredo Balena, Belo Horizonte, MG, CEP: 30130-100, Brazil.
| | - Juliana Lauar Gonçalves
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, RJ, Brazil
| | - Mariana Camila Gonçalves Miranda
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Vinícius Dantas Martins
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Laila Sampaio Horta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thais Garcias Moreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ana Lucia Brunialti Godard
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Andrezza Fernanda Santiago
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ana Maria Caetano Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Shuai X, Wei-min L, Tong YL, Dong N, Sheng ZY, Yao YM. Expression of IL-37 contributes to the immunosuppressive property of human CD4+CD25+ regulatory T cells. Sci Rep 2015; 5:14478. [PMID: 26411375 PMCID: PMC4585986 DOI: 10.1038/srep14478] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 09/01/2015] [Indexed: 12/02/2022] Open
Abstract
Interleukin-37 (IL-37) possesses the function of down-regulate systemic and local inflammation. It is unknown whether IL-37 is expressed in human regulatory T cells (Tregs) and its role in modulating the immune response of Tregs. In the present study, cell surface molecules and secretory cytokines were analyzed in order to determine the function of IL-37 in regulating inhibitory effect of human CD4+CD25+Tregs. Meanwhile, the effects of IL-37 on T cell differentiation and proliferation as co-culture of CD4+CD25+Treg/CD4+CD25−T cell were also investigated. It was showed that IL-37 was expressed in cytoplasm of CD4+CD25+Tregs, and the levels of IL-37 were gradually elevated with the enhanced activity of CD4+CD25+Tregs. Secretory cytokines such as transforming growth factor (TGF)-β and interleukin (IL)-10, and expressions of cell surface molecules, including forkhead/winged helix transcription factor p3 (FOXP3) and cytotoxic T-lymphocyte associated antigen (CTLA)-4, were significantly decreased when IL-37 gene was silenced by siRNA. Furthermore, down-regulation of IL-37 expression in human CD4+CD25+Tregs obviously promoted proliferation of co-cultured T cell and differentiation, together with observably enhancement of IL-2 formation. These results demonstrated that IL-37 might manifest as a critical protein involving in immunosuppression of human CD4+CD25+Tregs.
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Affiliation(s)
- Xu Shuai
- Trauma Research Center, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing 100048, China.,Department of Hepatobiliary Surgery, the 309th Hospital of Chinese PLA, Beijing 100091, China
| | - Li Wei-min
- Department of Hepatobiliary Surgery, the 309th Hospital of Chinese PLA, Beijing 100091, China
| | - Ya-lin Tong
- Department of Burns and Plastic Surgery, the 181st Hospital of Chinese PLA, Guilin 541002, China
| | - Ning Dong
- Trauma Research Center, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing 100048, China
| | - Zhi-yong Sheng
- Trauma Research Center, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing 100048, China
| | - Yong-ming Yao
- Trauma Research Center, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing 100048, China
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Zhao C, Bao C, Li J, Zhu Y, Wang S, Yang L, Shi Y, Liu H, Dou C, Ding G, Wang X, Wu H. Moxibustion and Acupuncture Ameliorate Crohn's Disease by Regulating the Balance between Th17 and Treg Cells in the Intestinal Mucosa. Evid Based Complement Alternat Med 2015; 2015:938054. [PMID: 26347488 DOI: 10.1155/2015/938054] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/27/2015] [Indexed: 12/16/2022]
Abstract
Previous studies have demonstrated that acupuncture is beneficial to patients with Crohn's disease (CD), but the mechanism underlying its therapeutic effects remains unclear. To identify the mechanism by which acupuncture treats CD, the balance between Th17 and Treg cells was assessed in CD patients. In this study, Ninety-two CD patients were randomly and equally assigned to a treatment group that were treated with herb-partitioned moxibustion and acupuncture or a control group with wheat bran-partitioned moxibustion and superficial acupuncture. The effect of these treatments on Th17 and Treg cells and their related molecular markers in the intestinal mucosa were detected before (week 0) and after (week 12) treatment. The results suggested that the ratio of Th17 and Treg cells was significantly decreased after treatment and that the levels of IL-17 and RORγt in the intestinal mucosa were obviously reduced, while the expression of FOXP3 was increased after treatment in both groups. In the treatment group, the expression of these molecules was more markedly regulated than the control group. In conclusion, moxibustion and acupuncture have been shown to regulate the ratio of Th17 and Treg cells in the intestinal mucosa of CD patients and restore the balance between these immune cell subsets.
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Duriancik DM, Comstock SS, Langohr IM, Fenton JI. High levels of fish oil enhance neutrophil development and activation and influence colon mucus barrier function in a genetically susceptible mouse model. J Nutr Biochem 2015; 26:1261-72. [PMID: 26297475 DOI: 10.1016/j.jnutbio.2015.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 05/28/2015] [Accepted: 06/04/2015] [Indexed: 12/23/2022]
Abstract
Dietary fatty acids influence immunologic homeostasis, but their effect on initiation of colitis, an immune-mediated disease, is not well established. Previously, our laboratory demonstrated that high doses of dietary fish oil (FO) increased colon inflammation and dysplasia in a model of infection-induced colitis. In the current study, we assessed the effects of high-dose dietary FO, 6% by weight, on colon inflammation, neutrophil recruitment and function, and mucus layer integrity in a genetically susceptible, colitis-prone mouse model in the absence of infection. FO-fed SMAD3(-/-) mice had increased colon inflammation evidenced by increased numbers of systemic and local neutrophils and increased neutrophil chemoattractant and inflammatory cytokine gene expression in the colon. Mucus layer thickness in the cecum and goblet cell numbers in the cecum and colon in FO-fed mice were reduced compared to control. FO consumption affected colitis in male and female mice differently. Compared to female control mice, neutrophils from FO-fed female mice had reduced reactive oxygen species (ROS) upon ex vivo stimulation with phorbol myristate acetate while FO-fed male mice produced increased ROS compared to control-fed male mice. In summary, dietary FO impaired mucus layer integrity and was associated with colon inflammation characterized by increased neutrophil numbers and altered neutrophil function. High-dose FO may have detrimental effects in populations genetically susceptible for inflammatory bowel disease and these effects may differ between males and females.
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Affiliation(s)
- David M Duriancik
- Department of Food Science & Human Nutrition, Michigan State University East Lansing, MI, 48824
| | - Sarah S Comstock
- Department of Food Science & Human Nutrition, Michigan State University East Lansing, MI, 48824
| | - Ingeborg M Langohr
- Department of Pathobiological Sciences Louisiana State University, Baton Rouge, LA, 70803
| | - Jenifer I Fenton
- Department of Food Science & Human Nutrition, Michigan State University East Lansing, MI, 48824.
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Tai KF, Wang CH. Using adenovirus armed short hairpin RNA targeting transforming growth factor β1 inhibits melanoma growth and metastasis in an ex vivo animal model. Ann Plast Surg 2013; 71 Suppl 1:S75-81. [PMID: 24284745 DOI: 10.1097/SAP.0000000000000041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The transforming growth factor β (TGF-β) is the key molecule implicated in impaired immune function in human patients with malignant melanoma. TGF-β can promote tumor growth, invasion, and metastasis in advanced stages of melanoma. Blocking these tumor-promoting effects of TGF-β provides a potentially important therapeutic strategy for the treatment of melanoma. In this study, we used an adenovirus-based shRNA expression system and successfully constructed Ad/TGF-β1-RNA interference (RNAi) which mediated the RNAi for TGF-β1 gene silencing. We examined the effects of TGF-β1 protein knockdown by RNAi on the growth and metastasis of melanoma in C57BL/6 mice induced by the B16F0 cell line. The TGF-β1 hairpin oligonucleotide was cloned into adenoviral vector. The resulting recombinant adenoviruses infected murine melanoma cell line, B16F0, and designated as B16F0/TGF-β1-RNAi cells. The blank adenoviral vector also infected B16F0 cells and designed as B16F0/vector-control cells served as a control. TGF-β1 expression was reduced in B16F0/TGF-β1-RNAi cells compared with B16F0 cells and B16F0/vector-control cells. Three million wild-type B16F0 cells, B16F0/vector-control cells, and B16F0/TGF-β1-RNAi cells were injected subcutaneously into the right flanks of adult female syngeneic mice C57BL/6. The tumor sizes were 756.09 (65.35), 798.48 (78.77), and 203.55 (24.56) mm at the 14th day in the mice receiving B16F0 cells, B16F0/vector-control cells, and B16F0/TGFβ1-RNAi cells, respectively. The P value was less than 0.01 by 1-way analysis of variance. TGF-β1 knockdown in B16F0 cells enhanced the infiltration of CD4 and CD8 T cells in the tumor regions. C57BL/6 mice were evaluated for pulmonary metastasis after tail vein injection of 2 million B16F0 cells, B16F0/vector-control cells, and B16F0/TGF-β1-RNAi cells. The pulmonary metastasis also reduced significantly on days 14 day and 21 in mice injected with B16F0/TGF-β1-RNAi tumors. The blood vessel density of the tumors markedly reduced in B16F0/TGF-β1-RNAi tumors. Our results showed that Ad/TGF-β1-RNAi could induce silencing of the TGF-β1 gene effectively. Silencing of TGF-β1 expression in B16F0 cells by RNAi technology can inhibit the growth and metastasis of this tumor after being transplanted to C57BL/6 mice. This kind of adenoviral vector based on RNAi might be a promising vector for cancer therapy.
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Principi M, Barone M, Pricci M, De Tullio N, Losurdo G, Ierardi E, Di Leo A. Ulcerative colitis: From inflammation to cancer. Do estrogen receptors have a role? World J Gastroenterol 2014; 20:11496-11504. [PMID: 25206257 PMCID: PMC4155343 DOI: 10.3748/wjg.v20.i33.11496] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/29/2014] [Accepted: 05/26/2014] [Indexed: 02/06/2023] Open
Abstract
Ulcerative colitis (UC) is a condition at increased risk for colorectal carcinoma (CRC) development. Nowadays, screening and follow-up programs are routinely performed worldwide to promote the early detection of CRCs in subjects with well known risk factors (extent, duration and severity of the disorder). The diffusion of these procedures is presumably the main reason for the marked reduction of cancer incidence and mortality in the course of UC. In addition, chemoprevention has been widely investigated and developed in many medical fields, and aspirin has shown a preventive effect against CRC, while mesalazine has been strongly invoked as a potential chemopreventive agent in UC. However, available studies show some limitations due to the obvious ethical implications of drug withdrawal in UC in order to design a control group. The estrogen receptors (ER) alpha/beta balance seems to have a relevant influence on colorectal carcinogenesis and ER beta appears to parallel apoptosis, and hence an anti-carcinogenic effect. Phytoestrogens are compounds acting as ER beta agonists and have shown a promising chemopreventive effect on sporadic as well as genetically inherited CRC. There is evidence suggesting a role for ERs in UC-related carcinogenesis. In this perspective, since these substances can be considered as dietary supplements and are completely free from side effects, phytoestrogens could be an interesting option for CRC prevention, even when the disease is a consequence of long-term chronic inflammation, as in the course of UC. Further studies of their effects are warranted in both the basic research and clinical fields.
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Zhou D, Pan YX. Pathophysiological basis for compromised health beyond generations: role of maternal high-fat diet and low-grade chronic inflammation. J Nutr Biochem 2014; 26:1-8. [PMID: 25440222 DOI: 10.1016/j.jnutbio.2014.06.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 04/24/2014] [Accepted: 06/16/2014] [Indexed: 02/07/2023]
Abstract
Early exposure to a fat-enriched diet programs the developmental profile and thus is associated with disease susceptibility in subsequent generations. Chronic low-grade inflammation, resulting from maternal high-fat diet, is activated in the fetal environment and in many organs of offspring, including placenta, adipose, liver, vascular system and brain. The prevalence of an inflammatory response is highly associated with obesity incidence, cardiovascular diseases, nonalcoholic fatty liver disease and brain damage. Substantial studies using high-fat model have consistently demonstrated the incidence of such inflammatory reactions; however, the potential contribution of active inflammation toward the physiological outcomes and developmental diseases is neither discussed in depth nor systemically integrated. Therefore, we aim to summarize the current findings in regards to how a maternal high-fat diet influences the inflammatory status, and probable pathogenic effects on the offspring. More importantly, since limited research has been conducted to reveal the epigenetic regulation of these inflammatory markers by maternal high-fat diet, we sincerely hope that our review will not only outline the pathophysiological relevance of inflammation but also identify a future direction for mechanistic investigation and clinical application.
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Affiliation(s)
- Dan Zhou
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign
| | - Yuan-Xiang Pan
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign; Illinois Informatics Institute, University of Illinois at Urbana-Champaign.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Bentley-Hewitt KL, De Guzman CE, Ansell J, Mandimika T, Narbad A, Lund EK. Polyunsaturated fatty acids modify expression of TGF-β in a co-culture model ultilising human colorectal cells and human peripheral blood mononuclear cells exposed to Lactobacillus gasseri, Escherichia coli and Staphylococcus aureus.. EUR J LIPID SCI TECH 2014; 116:505-513. [PMID: 25598698 PMCID: PMC4281927 DOI: 10.1002/ejlt.201300337] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/20/2014] [Accepted: 02/24/2014] [Indexed: 12/14/2022]
Abstract
Commensal bacteria and polyunsaturated fatty acids (PUFAs) have both been shown independently to modulate immune responses. This study tested the hypothesis that the different colonic immunomodulatory responses to commensal (Lactobacillus gasseri) and pathogenic bacteria (Escherichia coli and Staphylococcus aureus) may be modified by PUFAs. Experiments used a Transwell system combining the colorectal cell line HT29, or its mucous secreting sub-clone HT29-MTX, with peripheral blood mononuclear cells to analyse immunomodulatory signalling in response to bacteria, with and without prior treatment with arachidonic acid, eicosapentaenoic acid or docosahexaenoic acid. L. gasseri increased transforming growth factor β1 (TGF-β1) mRNA and protein secretion in colonic cell lines when compared with controls, an effect that was enhanced by pre-treatment with eicosapentaenoic acid. In contrast, the Gram-negative pathogen E. coli LF82 had no significant effect on TGF-β1 protein. L. gasseri also increased IL-8 mRNA but not protein while E. coli increased both; although differences between PUFA treatments were detected, none were significantly different to controls. Colonic epithelial cells show different immunomodulatory signalling patterns in response to the commensal L. gasseri compared to E. coli and S. aureus and pre-treatment of these cells with PUFAs can modify responses. Practical applications: We have demonstrated an interaction between dietary PUFAs and epithelial cell response to both commensal and pathogenic bacteria found in the gastrointestinal tract by utilising in vitro co-culture models. The data suggest that n-3 PUFAs may provide some protection against the potentially damaging effects of pathogens. Furthermore, the beneficial effects of combining n-3 PUFAs and the commensal bacteria, and potential probiotic, L. gasseri are illustrated by the increased expression of immunoregulatory TGF-β1.
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Affiliation(s)
- Kerry L Bentley-Hewitt
- Institute of Food Research Norwich Norfolk UK ; Food and Nutrition The New Zealand Institute for Plant & Food Research Limited Palmerston North New Zealand
| | - Cloe Erika De Guzman
- Food and Nutrition The New Zealand Institute for Plant & Food Research Limited Palmerston North New Zealand
| | - Juliet Ansell
- Food and Nutrition The New Zealand Institute for Plant & Food Research Limited Palmerston North New Zealand
| | - Tafadzwa Mandimika
- Food and Nutrition The New Zealand Institute for Plant & Food Research Limited Palmerston North New Zealand
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Sebastian S, Hernández V, Myrelid P, Kariv R, Tsianos E, Toruner M, Marti-Gallostra M, Spinelli A, van der Meulen-de Jong AE, Yuksel ES, Gasche C, Ardizzone S, Danese S. Colorectal cancer in inflammatory bowel disease: results of the 3rd ECCO pathogenesis scientific workshop (I). J Crohns Colitis 2014; 8:5-18. [PMID: 23664897 DOI: 10.1016/j.crohns.2013.04.008] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 04/05/2013] [Indexed: 02/08/2023]
Abstract
Epidemiological studies demonstrate an increased risk of colorectal cancer in patients with inflammatory bowel disease (IBD). A detailed literature review was conducted on epidemiology, risk factors, pathophysiology, chemoprevention and outcomes of colorectal cancer (CRC) in IBD as part of the 3rd ECCO scientific pathogenesis workshop.
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Affiliation(s)
- Shaji Sebastian
- Hull & East Yorkshire Hospitals NHS Trust, Hull York Medical School, Hull, United Kingdom.
| | - Vincent Hernández
- Gastroenterology Department, Complexo Hospitalario Universitario de Vigo, Vigo, Spain
| | - Pär Myrelid
- Division of Surgery, Department of Clinical and Experimental Medicine, Faculty of Health Sciences, Linköping University, County Council of Östergötland, Linköping, Sweden
| | - Revital Kariv
- Service for Gastrointestinal Malignancies, Department of Gastroenterology & Liver Disease, Tel Aviv Sourasky Medical Center, Israel
| | - Epameinondas Tsianos
- University of Ioannina, 1st Division of Internal Medicine and Hepato-Gastroenterology Unit, Greece
| | - Murat Toruner
- Ankara University Medical School, Ibni Sina Hospital, Division of Gastroenterology, Ankara, Turkey
| | - Marc Marti-Gallostra
- Department of Colorectal Surgery, University Hospital of Valle de Hebron, Barcelona, Spain
| | - Antonino Spinelli
- Dipartimento e Cattedra di Chirurgia Generale, Istituto Clinico Humanitas IRCCS, Università degli Studi di Milano, Rozzano, Milano, Italy
| | | | - Elif Sarıtas Yuksel
- Department of Gastroenterology, Katip Celebi University, Ataturk Research and Teaching Hospital, Izmir, Turkey
| | - Christoph Gasche
- Christian Doppler Laboratory on Molecular Cancer Chemoprevention, Division of Gastroenterology, Medical University of Vienna, Vienna, Austria
| | - Sandro Ardizzone
- Chair of Gastroenterology, "L. Sacco" University Hospital, Milan, Italy
| | - Silvio Danese
- Department of Gastroenterology, Istituto Clinico Humanitas, Milan, Italy.
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Biancheri P, Giuffrida P, Docena GH, MacDonald TT, Corazza GR, Di Sabatino A. The role of transforming growth factor (TGF)-β in modulating the immune response and fibrogenesis in the gut. Cytokine Growth Factor Rev. 2014;25:45-55. [PMID: 24332927 DOI: 10.1016/j.cytogfr.2013.11.001] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 11/19/2013] [Indexed: 02/07/2023]
Abstract
Transforming growth factor (TGF)-β, a pleiotropic cytokine released by both immune and non-immune cells in the gut, exerts an important tolerogenic action by promoting regulatory T cell differentiation. TGF-β also enhances enterocyte migration and regulates extracellular matrix turnover, thereby playing a crucial role in tissue remodeling in the gut. In this review we describe the mechanisms by which abnormal TGF-β signaling impairs intestinal immune tolerance and tissue repair, thus predisposing to the onset of immune-mediated bowel disorders, such as inflammatory bowel disease and celiac disease. Additionally, we will discuss potential therapeutic strategies aiming at restoring physiologic TGF-β signaling in chronic intestinal diseases.
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Seamons A, Treuting PM, Brabb T, Maggio-Price L. Characterization of dextran sodium sulfate-induced inflammation and colonic tumorigenesis in Smad3(-/-) mice with dysregulated TGFβ. PLoS One 2013; 8:e79182. [PMID: 24244446 PMCID: PMC3823566 DOI: 10.1371/journal.pone.0079182] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 09/21/2013] [Indexed: 12/22/2022] Open
Abstract
There are few mouse models that adequately mimic large bowel cancer in humans or the gastrointestinal inflammation which frequently precedes it. Dextran sodium sulphate (DSS)-induces colitis in many animal models and has been used in combination with the carcinogen azoxymethane (AOM) to induce cancer in mice. Smad3−/− mice are deficient in the transforming growth factor beta (TGFβ) signaling molecule, SMAD3, resulting in dysregulation of the cellular pathway most commonly affected in human colorectal cancer, and develop inflammation-associated colon cancer. Previous studies have shown a requirement for a bacterial trigger for the colitis and colon cancer phenotype in Smad3−/− mice. Studies presented here in Smad3−/− mice detail disease induction with DSS, without the use of AOM, and show a) Smad3−/− mice develop a spectrum of lesions ranging from acute and chronic colitis, crypt herniation, repair, dysplasia, adenomatous polyps, disseminated peritoneal adenomucinosis, adenocarcinoma, mucinous adenocarcinoma (MAC) and squamous metaplasia; b) the colon lesions have variable galactin-3 (Mac2) staining c) increased DSS concentration and duration of exposure leads to increased severity of colonic lesions; d) heterozygosity of SMAD3 does not confer increased susceptibility to DSS-induced disease and e) disease is partially controlled by the presence of T and B cells as Smad3−/−Rag2−/− double knock out (DKO) mice develop a more severe disease phenotype. DSS-induced disease in Smad3−/− mice may be a useful animal model to study not only inflammation-driven MAC but other human diseases such as colitis cystica profunda (CCP) and pseudomyxomatous peritonei (PMP).
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Affiliation(s)
- Audrey Seamons
- Department of Comparative Medicine, University of Washington, Seattle, Washington, United States of America
| | - Piper M. Treuting
- Department of Comparative Medicine, University of Washington, Seattle, Washington, United States of America
| | - Thea Brabb
- Department of Comparative Medicine, University of Washington, Seattle, Washington, United States of America
| | - Lillian Maggio-Price
- Department of Comparative Medicine, University of Washington, Seattle, Washington, United States of America
- * E-mail:
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Shurin GV, Ma Y, Shurin MR. Immunosuppressive mechanisms of regulatory dendritic cells in cancer. Cancer Microenviron 2013; 6:159-67. [PMID: 23749739 DOI: 10.1007/s12307-013-0133-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 12/20/2022]
Abstract
Three major functional subsets of dendritic cells (DCs) have been described in the tumor microenvironment in patients with cancer and tumor-bearing animals: (i) conventional DCs with intact antigen-presenting capabilities, (ii) functionally defective DCs with decreased motility and low ability to uptake, process and present antigens or produce cytokines and (iii) regulatory DCs with high capacity to suppress T cell proliferation, induce differentiation of regulatory T cells or support immune tolerance. Phenotypic characteristics of regulatory DCs (regDCs), as well as the mechanisms of T cell inhibition, vary in different experimental conditions and environments, suggesting high level of their plasticity and probably different origin. Although new data demonstrate that regDCs may play an important role at early stages of tumor development, functional differences and clinical significance of emergence of different myeloid regulatory cells (MDSCs, regDCs, M2 macrophages, N2 neutrophils, mast cells) in cancer remain to be determined.
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Liberek A, Kmieć Z, Kartanowicz D, Wierzbicki PM, Stanisławowski M, Kaszubowska L, Łuczak G, Góra-Gębka M, Landowski P, Szlagatys-Sidorkiewicz A, Liberek T, Kamińska B, Jakóbkiewicz-Banecka J, Węgrzyn G. The mRNA level of the transforming growth factor β1 gene, but not the amount of the gene product, can be considered as a potential prognostic parameter in inflammatory bowel diseases in children. Int J Colorectal Dis 2013; 28:165-72. [PMID: 22584294 PMCID: PMC3579420 DOI: 10.1007/s00384-012-1489-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2012] [Indexed: 02/04/2023]
Abstract
PURPOSE Transforming growth factor β1 (TGF-β1) plays a role in cell proliferation and differentiation, and it can modulate immune response. In this work, we asked whether levels of either TGF-β1 or mRNA of the corresponding gene in plasma or tissue can be useful in diagnosing and/or monitoring of the clinical course of inflammatory bowel diseases (IBD). METHODS The study group consisted of 104 pediatric patients with IBD: 36 with Crohn's disease (CD) and 68 with ulcerative colitis (UC); 42 children represented the control group. TGF-β1 levels in plasma and intestinal mucosa were estimated by ELISA and immunohistochemistry (IHC), respectively. Levels of TGF-β1 mRNA were determined by reverse transcription and real-time PCR. RESULTS In patients with IBD, and in subgroups with CD and UC, no significant differences in the TGF-β1 level in plasma and tissue were found relative to the control group. These variables were not dependent on the stage of the disease, its activity or severity of endoscopic and histopathological findings. TGF-β1 mRNA levels were significantly higher in tissue samples withdrawn during the relapse of the disease than in those taken during the remission or in the control group. However, no correlation between TGF-β1 plasma levels and TGF-β1 mRNA amount in the intestinal mucosa was observed. CONCLUSIONS The TGF-β1 mRNA level, but not the amount of the gene product, was significantly increased in the pathologically changed tissue during the relapse of IBD. We suggest that this parameter might be considered as a potential prognostic value when assessing IBD in children.
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Affiliation(s)
- Anna Liberek
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | - Zbigniew Kmieć
- Department of Histology, Medical University of Gdańsk, Debinki 1, 80-211 Gdańsk, Poland
| | - Dorota Kartanowicz
- Department of Histology, Medical University of Gdańsk, Debinki 1, 80-211 Gdańsk, Poland
| | - Piotr M. Wierzbicki
- Department of Histology, Medical University of Gdańsk, Debinki 1, 80-211 Gdańsk, Poland
| | - Marcin Stanisławowski
- Department of Histology, Medical University of Gdańsk, Debinki 1, 80-211 Gdańsk, Poland
| | - Lucyna Kaszubowska
- Department of Histology, Medical University of Gdańsk, Debinki 1, 80-211 Gdańsk, Poland
| | - Grażyna Łuczak
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | - Magdalena Góra-Gębka
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | - Piotr Landowski
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | - Agnieszka Szlagatys-Sidorkiewicz
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | - Tomasz Liberek
- Department of Nephrology, Transplantology and Internal Medicine, Medical University of Gdańsk, Dębinki 7, 80-211 Gdańsk, Poland
| | - Barbara Kamińska
- Department of Pediatrics, Pediatric Gastroenterology, Hepatology and Nutrition, Medical University of Gdańsk, Nowe Ogrody 1-6, 80-803 Gdańsk, Poland
| | | | - Grzegorz Węgrzyn
- Department of Molecular Biology, University of Gdańsk, Kładki 24, 80-822 Gdańsk, Poland
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Carli C, Giroux M, Delisle JS. Roles of Transforming Growth Factor-β in Graft-versus-Host and Graft-versus-Tumor Effects. Biol Blood Marrow Transplant 2012; 18:1329-40. [DOI: 10.1016/j.bbmt.2012.01.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 01/27/2012] [Indexed: 01/07/2023]
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Dornhoff H, Becker C, Wirtz S, Strand D, Tenzer S, Rosfa S, Neufert C, Mudter J, Markl J, Siebler J, Neurath MF. A variant of Smurf2 protects mice against colitis-associated colon cancer by inducing transforming growth factor β signaling. Gastroenterology 2012; 142:1183-1194.e4. [PMID: 22333948 DOI: 10.1053/j.gastro.2012.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 01/31/2012] [Accepted: 02/02/2012] [Indexed: 01/07/2023]
Abstract
BACKGROUND & AIMS Transforming growth factor (TGF)-β signaling, which is down-regulated by the E3 ubiquitin ligase Smad ubiquitin regulating factor 2 (Smurf2), promotes development of cancer. We identified a splice variant of Smurf2 (ΔE2Smurf2) and investigated its role in colon carcinogenesis in mice. METHODS Colitis-associated colon cancer was induced in mice by administration of azoxymethane, followed by 3 cycles of oral administration of dextran sodium sulfate. Messenger RNA levels of Smurf2 in colon tumors and control tissue were measured by quantitative polymerase chain reaction; lymphocyte and cytokine levels were measured in tumor and tissue samples. RESULTS Tumor-infiltrating CD4(+) cells expressed higher levels of ΔE2Smurf2 than CD4(+) cells from nontumor tissues of wild-type mice. T cell-specific overexpression of ΔE2Smurf2 increased TGF-β signaling by suppressing protein levels of Smurf2, accompanied by an increase in levels of TGF-β receptor type II. Transgenic mice that overexpress ΔE2Smurf2 were protected against development of colitis-associated tumors and down-regulated proinflammatory cytokines such as interleukin-6. Patients with chronic inflammatory bowel disease had a significantly lower ratio of Smurf2/ΔE2Smurf2 than control individuals. CONCLUSIONS T cell-specific ΔE2Smurf2 degrades wild-type Smurf2 and controls intestinal tumor growth in mice by up-regulating TGF-β receptor type II, reducing proliferation and production of proinflammatory cytokines.
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Affiliation(s)
- Heike Dornhoff
- Department of Medicine, University of Erlangen-Nuremberg, Erlangen and Nuremberg, Germany
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Ziegler FLF, Castro GA, Moreno YMF, Oya V, Vilela MMDS, Sgarbieri VC. Partial chemical and functional characterization of milk whey products obtained by different processes. Food Sci Technol 2012. [DOI: 10.1590/s0101-20612012005000002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Whey protein samples (S-1 to S-5) were tested in vivo and in vitro for nutritional properties and selected bioactivities. Weanling male Wistar rats fed modified AIN-93G (12 g protein.100 g-1) diets for 21 days were used the in vivo studies. The nutritional parameters did not differ among the protein diets tested. Erythrocyte glutathione content was considered high and was higher for S-3, but liver glutathione was the same for all dietary groups. For S-3, cytokine secretion (IL-10 and TNF-α) by human peripheral blood mononuclear cells (in RPMI-1640 medium) was higher in the absence of antigen than in the presence of BCG antigen. Interleukin-4 secretion was repressed in all treatments. The IC50, whey protein concentration required to inhibit 50% of the melanoma cell proliferation, was 2.68 mg.mL-1 of culture medium for the S-3 sample and 3.66 mg.mL-1 for the S-2 sample. Based on these results, it was concluded that S-3 (whey protein concentrate enriched with TGF-β and lactoferrin) produced better nutritional and immunological responses than the other products tested.
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Abstract
Transforming growth factor-β (TGF-β) is a central regulator in chronic liver disease contributing to all stages of disease progression from initial liver injury through inflammation and fibrosis to cirrhosis and hepatocellular carcinoma. Liver-damage-induced levels of active TGF-β enhance hepatocyte destruction and mediate hepatic stellate cell and fibroblast activation resulting in a wound-healing response, including myofibroblast generation and extracellular matrix deposition. Being recognised as a major profibrogenic cytokine, the targeting of the TGF-β signalling pathway has been explored with respect to the inhibition of liver disease progression. Whereas interference with TGF-β signalling in various short-term animal models has provided promising results, liver disease progression in humans is a process of decades with different phases in which TGF-β or its targeting might have both beneficial and adverse outcomes. Based on recent literature, we summarise the cell-type-directed double-edged role of TGF-β in various liver disease stages. We emphasise that, in order to achieve therapeutic effects, we need to target TGF-β signalling in the right cell type at the right time.
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Luan YY, Yao YM, Zhang L, Dong N, Zhang QH, Yu Y, Sheng ZY. Expression of tumor necrosis factor-α induced protein 8 like-2 contributes to the immunosuppressive property of CD4+CD25+ regulatory T cells in mice. Mol Immunol 2011; 49:219-26. [DOI: 10.1016/j.molimm.2011.08.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/13/2011] [Accepted: 08/19/2011] [Indexed: 02/06/2023]
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Hamady ZZR, Scott N, Farrar MD, Wadhwa M, Dilger P, Whitehead TR, Thorpe R, Holland KT, Lodge JPA, Carding SR. Treatment of colitis with a commensal gut bacterium engineered to secrete human TGF-β1 under the control of dietary xylan 1. Inflamm Bowel Dis 2011; 17:1925-35. [PMID: 21830271 DOI: 10.1002/ibd.21565] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 10/11/2010] [Indexed: 12/12/2022]
Abstract
BACKGROUND While cytokine therapy and the use of immunosuppressive cytokines such as transforming growth factor-β (TGF-β) offer great potential for the treatment of inflammatory bowel disease (IBD), issues concerning formulation, stability in vivo, delivery to target tissues, and potential toxicity need to be addressed. In consideration of these problems we engineered the human commensal bacterium Bacteroides ovatus for the controlled in situ delivery of TGF-β(1) and treatment of colitis. METHODS Sequence encoding the human tgf-β1 gene was cloned downstream of the xylanase promoter in the xylan operon of B. ovatus by homologous recombination. Resulting recombinants (BO-TGF) were tested for TGF-β production in the presence and absence of polysaccharide xylan in vitro and in vivo, and used to treat experimental murine colitis. Clinical and pathological scores were used to assess the effectiveness of therapy. Colonic inflammatory markers including inflammatory cytokine expression were assessed by colorimetric assay and real-time polymerase chain reaction (PCR). RESULTS BO-TGF secreted high levels of biologically active dimeric TGF-β in vitro and in vivo in a xylan-controlled manner. Administration of xylan in drinking water to BO-TGF-treated mice resulted in a significant clinical improvement of colitis, accelerating healing of damaged colonic epithelium, reducing inflammatory cell infiltration, reducing expression of proinflammatory cytokines, and promoting production of mucin-rich goblet cells in colonic crypts. These beneficial effects are comparable and in most cases superior to that achieved by conventional steroid therapy. CONCLUSIONS This novel drug delivery system has potential for the targeted and controlled delivery of TGF-β(1) and other immunotherapeutic agents for the long-term management of various bowel disorders.
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Affiliation(s)
- Zaed Z R Hamady
- Institute of Molecular and Cellular Biology, University of Leeds, Leeds, UK
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Lopez-Dee Z, Pidcock K, Gutierrez LS. Thrombospondin-1: multiple paths to inflammation. Mediators Inflamm 2011; 2011:296069. [PMID: 21765615 DOI: 10.1155/2011/296069] [Citation(s) in RCA: 188] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 04/06/2011] [Accepted: 05/05/2011] [Indexed: 12/31/2022] Open
Abstract
Inflammation is a defensive process against tissue injury. Once this self-protective strategy is initiated, an effective resolution of the process is crucial to avoid major and unnecessary tissue damage. If the underlying event inducing inflammation is not addressed and homeostasis is not restored, this process can become chronic and lead to angiogenesis and carcinogenesis. Thrombospondin-1 (TSP-1) is a matricellular protein involved in angiogenesis, cancer, and inflammation. The effects of TSP-1 have been studied in many preclinical tumor models, and mimetic peptides are being tested in cancer clinical trials. However, the molecular mechanisms explaining its role in inflammatory processes are not well understood. This paper will discuss the role of TSP-1 in inflammation and its interaction with key receptors that may explain its functions in that process. Recent literature will be reviewed showing novel mechanisms by which this multifaceted protein could modulate the inflammatory process and impact its resolution.
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De Robertis M, Massi E, Poeta ML, Carotti S, Morini S, Cecchetelli L, Signori E, Fazio VM. The AOM/DSS murine model for the study of colon carcinogenesis: From pathways to diagnosis and therapy studies. J Carcinog 2011; 10:9. [PMID: 21483655 PMCID: PMC3072657 DOI: 10.4103/1477-3163.78279] [Citation(s) in RCA: 387] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 02/05/2011] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is a major health problem in industrialized countries. Although inflammation-linked carcinogenesis is a well accepted concept and is often observed within the gastrointestinal tract, the underlying mechanisms remain to be elucidated. Inflammation can indeed provide initiating and promoting stimuli and mediators, generating a tumour-prone microenvironment. Many murine models of sporadic and inflammation-related colon carcinogenesis have been developed in the last decade, including chemically induced CRC models, genetically engineered mouse models, and xenoplants. Among the chemically induced CRC models, the combination of a single hit of azoxymethane (AOM) with 1 week exposure to the inflammatory agent dextran sodium sulphate (DSS) in rodents has proven to dramatically shorten the latency time for induction of CRC and to rapidly recapitulate the aberrant crypt foci–adenoma–carcinoma sequence that occurs in human CRC. Because of its high reproducibility and potency, as well as the simple and affordable mode of application, the AOM/DSS has become an outstanding model for studying colon carcinogenesis and a powerful platform for chemopreventive intervention studies. In this article we highlight the histopathological and molecular features and describe the principal genetic and epigenetic alterations and inflammatory pathways involved in carcinogenesis in AOM/DSS–treated mice; we also present a general overview of recent experimental applications and preclinical testing of novel therapeutics in the AOM/DSS model.
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Affiliation(s)
- Mariangela De Robertis
- Laboratory of Molecular Medicine and Biotechnology, CIR, Campus Bio-Medico University of Rome, Via Álvaro del Portillo 21 - 00128 Rome, Italy
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Abstract
IL-6 activates various cell types carrying the membrane bound IL-6R (classical IL-6 signaling) as well as IL-6R(-) gp130(+) cells via the soluble IL-6R (IL-6 trans-signaling). IL-6 signaling plays a pivotal role in controlling the differentiation and activation of T lymphocytes by inducing the Jak/STAT-3 and the Ras/Erk/C/EBP pathways. In particular, IL-6 modulates the resistance of T cells against apoptosis, induces activation of T helper cells and controls the balance between regulatory T cells and Th17 cells. Importantly, recent findings suggest that blockade of IL-6 signaling is effective in treating experimental models of autoimmune and chronic inflammatory diseases such as inflammatory bowel diseases, diabetes, multiple sclerosis, asthma and rheumatoid arthritis as well as models of inflammation-associated cancer. Thus, anti-IL-6/anti-IL-6R strategies emerge as promising novel approaches for therapy of inflammatory diseases in humans. In this review article, we discuss the latest findings on the role of IL-6 in experimental models of autoimmunity and cancer, as well as clinical perspectives.
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Abstract
Transforming growth factor-β (TGF-β) plays a central role in a wide array of cellular functions including control of cell growth and differentiation, embryonic development, wound healing, angiogenesis, and immune regulation. In the gastrointestinal tract, TGF-β can either promote or suppress inflammation and cancer formation. This report reviews recent data on the role of TGF-β in the pathogenesis of inflammatory bowel disease and how TGF-β might contribute to the cancer risk associated with chronic inflammation of the gut.
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Affiliation(s)
- Linda A Feagins
- Divisions of Gastroenterology and Hepatology, VA North Texas Health Care System, and University of Texas Southwestern Medical Center at Dallas, Dallas, Texas, USA.
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Deepak P, Acharya A. Anti-tumor immunity and mechanism of immunosuppression mediated by tumor cells: role of tumor-derived soluble factors and cytokines. Int Rev Immunol 2010; 29:421-58. [PMID: 20635882 DOI: 10.3109/08830185.2010.483027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The immune system plays a crucial role in the protection against tumor growth and progression. However, the activation of the immune system against the neoplastic cells does not always occur and, therefore, tumor cells are able to grow and progress continually in the host. It has now been realized that tumor cells themselves produce many of the important factors that are responsible for dismounting of effective immune response. These tumor-derived soluble factors invariably subdue the functions of almost every immune cell population. Therefore, we attempted to underline the mechanism of anti-tumor immune response and immunosuppression induced by tumor cells.
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Affiliation(s)
- Praveen Deepak
- Centre of Advance Study in Zoology, Faculty of Science, Banaras Hindu University, Varanasi, UP, India
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Woodworth HL, McCaskey SJ, Duriancik DM, Clinthorne JF, Langohr IM, Gardner EM, Fenton JI. Dietary Fish Oil Alters T Lymphocyte Cell Populations and Exacerbates Disease in a Mouse Model of Inflammatory Colitis. Cancer Res 2010; 70:7960-9. [DOI: 10.1158/0008-5472.can-10-1396] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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