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Sohn EJ. Functional Analysis of Monkeypox and Interrelationship between Monkeypox and COVID-19 by Bioinformatic Analysis. Genet Res (Camb) 2023; 2023:8511036. [PMID: 37006463 PMCID: PMC10063359 DOI: 10.1155/2023/8511036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/03/2023] [Accepted: 03/15/2023] [Indexed: 04/04/2023] Open
Abstract
The outbreak of monkeypox may be considered a novel and urgent threat after the coronavirus disease (COVID-19). No wide-ranging studies have been conducted on this disease since it was first reported. We systematically assessed the functional role of gene expression in cells infected with the monkeypox virus using transcriptome profiling and compared the functional relation with that of COVID-19. Based on the Gene Expression Omnibus database, we obtained 212 differentially expressed genes (DEGs) of GSE36854 and GSE21001 of monkeypox datasets. Enrichment analyses, including KEGG and gene ontology (GO) analyses, were performed to identify the common function of 212 DEGs of GSE36854 and GSE21001. CytoHubba and Molecular Complex Detection were performed to determine the core genes after a protein-protein interaction (PPI). Metascape/COVID-19 was used to compare DEGs of monkeypox and COVID-19. GO analysis of 212 DEGs of GSE36854 and GSE21001 for monkeypox infection showed cellular response to cytokine stimulus, cell activation, and cell differentiation regulation. KEGG analysis of 212 DEGs of GSE36854 and GSE21001 for monkeypox infection showed involvement of monkeypox in COVID-19, cytokine-cytokine receptor interaction, inflammatory bowel disease, atherosclerosis, TNF signaling, and T cell receptor signaling. By comparing our data with published transcriptome of severe acute respiratory syndrome coronavirus 2 infections in other cell lines, the common function of monkeypox and COVID-19 includes cytokine signaling in the immune system, TNF signaling, and MAPK cascade regulation. Thus, our data suggest that the molecular connections identified between COVID-19 and monkeypox elucidate the causes of monkeypox.
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Affiliation(s)
- Eun Jung Sohn
- College of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
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2
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Rapamycin suppresses inflammation and increases the interaction between p65 and IκBα in rapamycin-induced fatty livers. PLoS One 2023; 18:e0281888. [PMID: 36867603 PMCID: PMC9983852 DOI: 10.1371/journal.pone.0281888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 02/01/2023] [Indexed: 03/04/2023] Open
Abstract
Rapamycin treatment significantly increases lifespan and ameliorates several aging-related diseases in mice, making it a potential anti-aging drug. However, there are several obvious side effects of rapamycin, which may limit the broad applications of this drug. Lipid metabolism disorders such as fatty liver and hyperlipidemia are some of those unwanted side effects. Fatty liver is characterized as ectopic lipid accumulation in livers, which is usually accompanied by increased inflammation levels. Rapamycin is also a well-known anti-inflammation chemical. How rapamycin affects the inflammation level in rapamycin-induced fatty liver remains poorly understood. Here, we show that eight-day rapamycin treatment induced fatty liver and increased liver free fatty acid levels in mice, while the expression levels of inflammatory markers are even lower than those in the control mice. Mechanistically, the upstream of the pro-inflammatory pathway was activated in rapamycin-induced fatty livers, however, there is no increased NFκB nuclear translocation probably because the interaction between p65 and IκBα was enhanced by rapamycin treatment. The lipolysis pathway in the liver is also suppressed by rapamycin. Liver cirrhosis is an adverse consequence of fatty liver, while prolonged rapamycin treatment did not increase liver cirrhosis markers. Our results indicate that although fatty livers are induced by rapamycin, the fatty livers are not accompanied by increased inflammation levels, implying that rapamycin-induced fatty livers might not be as harmful as other types of fatty livers, such as high-fat diet and alcohol-induced fatty livers.
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Moens U, Prezioso C, Pietropaolo V. Functional Domains of the Early Proteins and Experimental and Epidemiological Studies Suggest a Role for the Novel Human Polyomaviruses in Cancer. Front Microbiol 2022; 13:834368. [PMID: 35250950 PMCID: PMC8894888 DOI: 10.3389/fmicb.2022.834368] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
As their name indicates, polyomaviruses (PyVs) can induce tumors. Mouse PyV, hamster PyV and raccoon PyV have been shown to cause tumors in their natural host. During the last 30 years, 15 PyVs have been isolated from humans. From these, Merkel cell PyV is classified as a Group 2A carcinogenic pathogen (probably carcinogenic to humans), whereas BKPyV and JCPyV are class 2B (possibly carcinogenic to humans) by the International Agency for Research on Cancer. Although the other PyVs recently detected in humans (referred to here as novel HPyV; nHPyV) share many common features with PyVs, including the viral oncoproteins large tumor antigen and small tumor antigen, as their role in cancer is questioned. This review discusses whether the nHPyVs may play a role in cancer based on predicted and experimentally proven functions of their early proteins in oncogenic processes. The functional domains that mediate the oncogenic properties of early proteins of known PyVs, that can cause cancer in their natural host or animal models, have been well characterized and we examined whether these functional domains are conserved in the early proteins of the nHPyVs and presented experimental evidence that these conserved domains are functional. Furthermore, we reviewed the literature describing the detection of nHPyV in human tumors.
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Affiliation(s)
- Ugo Moens
- Faculty of Health Sciences, Department of Medical Biology, University of Tromsø – The Arctic University of Norway, Tromsø, Norway
- *Correspondence: Ugo Moens,
| | - Carla Prezioso
- Microbiology of Chronic Neuro-Degenerative Pathologies, IRCSS San Raffaele Roma, Rome, Italy
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Valeria Pietropaolo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
- Valeria Pietropaolo,
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4
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Protective Effect of Oligonol on Dimethylnitrosamine-Induced Liver Fibrosis in Rats via the JNK/NF-κB and PI3K/Akt/Nrf2 Signaling Pathways. Antioxidants (Basel) 2021; 10:antiox10030366. [PMID: 33671028 PMCID: PMC7997446 DOI: 10.3390/antiox10030366] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 12/11/2022] Open
Abstract
Oligonol is a low molecular weight polyphenol product derived from lychee fruit by a manufacturing process. We investigated oligonol’s anti-fibrotic effect and the underlying mechanism in dimethylnitrosamine (DMN)-induced chronic liver damage in male Sprague–Dawley rats. Oral administration of oligonol (10 and 20 mg/kg body weight) ameliorated the DMN-induced abnormalities in liver histology and serum parameters in rats. Oligonol prevented the DMN-induced elevations of TNF-α, IL-1β, IL-6, cyclooxygenase-2, and inducible nitric oxide synthase expressions at the mRNA level. NF-κB activation and JNK phosphorylation in DMN-treated rats were ablated by oligonol. Oligonol reduced the enhanced production of hepatic malondialdehyde and reactive oxygen species and recovered protein SH, non-protein SH levels, and catalase activity in the DMN treated liver. Nrf2 translocation into the nucleus was enhanced, and PI3K and phosphorylated Akt levels were increased by administering oligonol. The level of hepatic fibrosis-related factors such as α-smooth muscle actin, transforming growth factor-β1, and type I collagen was reduced in rats treated with oligonol. Histology and immunohistochemistry analysis showed that the accumulation of collagen and activation of hepatic stellate cells (HSCs) in liver tissue were restored by oligonol treatment. Taken together, oligonol showed antioxidative, hepatoprotective, and anti-fibrotic effects via JNK/NF-κB and PI3K/Akt/Nrf2 signaling pathways in DMN-intoxicated rats. These results suggest that antioxidant oligonol is a potentially useful agent for the protection against chronic liver injury.
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5
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Worrell JC, Leslie J, Smith GR, Zaki MYW, Paish HL, Knox A, James ML, Cartwright TN, O'Reilly S, Kania G, Distler O, Distler JHW, Herrick AL, Jeziorska M, Borthwick LA, Fisher AJ, Mann J, Mann DA, Oakley F. cRel expression regulates distinct transcriptional and functional profiles driving fibroblast matrix production in systemic sclerosis. Rheumatology (Oxford) 2021; 59:3939-3951. [PMID: 32725139 DOI: 10.1093/rheumatology/keaa272] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/24/2020] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES NF-κB regulates genes that control inflammation, cell proliferation, differentiation and survival. Dysregulated NF-κB signalling alters normal skin physiology and deletion of cRel limits bleomycin-induced skin fibrosis. This study investigates the role of cRel in modulating fibroblast phenotype in the context of SSc. METHODS Fibrosis was assessed histologically in mice challenged with bleomycin to induce lung or skin fibrosis. RNA sequencing and pathway analysis was performed on wild type and Rel-/- murine lung and dermal fibroblasts. Functional assays examined fibroblast proliferation, migration and matrix production. cRel overexpression was investigated in human dermal fibroblasts. cRel immunostaining was performed on lung and skin tissue sections from SSc patients and non-fibrotic controls. RESULTS cRel expression was elevated in murine lung and skin fibrosis models. Rel-/- mice were protected from developing pulmonary fibrosis. Soluble collagen production was significantly decreased in fibroblasts lacking cRel while proliferation and migration of these cells was significantly increased. cRel regulates genes involved in extracellular structure and matrix organization. Positive cRel staining was observed in fibroblasts in human SSc skin and lung tissue. Overexpression of constitutively active cRel in human dermal fibroblasts increased expression of matrix genes. An NF-κB gene signature was identified in diffuse SSc skin and nuclear cRel expression was elevated in SSc skin fibroblasts. CONCLUSION cRel regulates a pro-fibrogenic transcriptional programme in fibroblasts that may contribute to disease pathology. Targeting cRel signalling in fibroblasts of SSc patients could provide a novel therapeutic avenue to limit scar formation in this disease.
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Affiliation(s)
- Julie C Worrell
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Jack Leslie
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Graham R Smith
- Bioinformatics Support Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Marco Y W Zaki
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne.,Biochemistry Department, Faculty of Pharmacy, Minia University, Egypt
| | - Hannah L Paish
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Amber Knox
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Michelle L James
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Tyrell N Cartwright
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Steven O'Reilly
- Department of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Gabriela Kania
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Oliver Distler
- Center of Experimental Rheumatology, Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Jörg H W Distler
- Department of Internal Medicine III and Institute for Clinical Immunology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ariane L Herrick
- Centre for Musculoskeletal Research, The University of Manchester, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester
| | - Maria Jeziorska
- Division of Cardiovascular Sciences, University of Manchester, Manchester
| | - Lee A Borthwick
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Andrew J Fisher
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne.,Institute of Transplantation, The Freeman Hospital, High Heaton, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Jelena Mann
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Derek A Mann
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
| | - Fiona Oakley
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne
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6
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Fultang N, Li X, Li T, Chen YH. Myeloid-Derived Suppressor Cell Differentiation in Cancer: Transcriptional Regulators and Enhanceosome-Mediated Mechanisms. Front Immunol 2021; 11:619253. [PMID: 33519825 PMCID: PMC7840597 DOI: 10.3389/fimmu.2020.619253] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/30/2020] [Indexed: 01/16/2023] Open
Abstract
Myeloid-derived Suppressor Cells (MDSCs) are a sub-population of leukocytes that are important for carcinogenesis and cancer immunotherapy. During carcinogenesis or severe infections, inflammatory mediators induce MDSCs via aberrant differentiation of myeloid precursors. Although several transcription factors, including C/EBPβ, STAT3, c-Rel, STAT5, and IRF8, have been reported to regulate MDSC differentiation, none of them are specifically expressed in MDSCs. How these lineage-non-specific transcription factors specify MDSC differentiation in a lineage-specific manner is unclear. The recent discovery of the c-Rel-C/EBPβ enhanceosome in MDSCs may help explain these context-dependent roles. In this review, we examine several transcriptional regulators of MDSC differentiation, and discuss the concept of non-modular regulation of MDSC signature gene expression by transcription factors such as c-Rel and C/EBPß.
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Affiliation(s)
- Norman Fultang
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | | | | | - Youhai H. Chen
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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7
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Leslie J, Macia MG, Luli S, Worrell JC, Reilly WJ, Paish HL, Knox A, Barksby BS, Gee LM, Zaki MYW, Collins AL, Burgoyne RA, Cameron R, Bragg C, Xu X, Chung GW, Brown CDA, Blanchard AD, Nanthakumar CB, Karsdal M, Robinson SM, Manas DM, Sen G, French J, White SA, Murphy S, Trost M, Zakrzewski JL, Klein U, Schwabe RF, Mederacke I, Nixon C, Bird T, Teuwen LA, Schoonjans L, Carmeliet P, Mann J, Fisher AJ, Sheerin NS, Borthwick LA, Mann DA, Oakley F. c-Rel orchestrates energy-dependent epithelial and macrophage reprogramming in fibrosis. Nat Metab 2020; 2:1350-1367. [PMID: 33168981 PMCID: PMC7116435 DOI: 10.1038/s42255-020-00306-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/30/2020] [Indexed: 02/07/2023]
Abstract
Fibrosis is a common pathological feature of chronic disease. Deletion of the NF-κB subunit c-Rel limits fibrosis in multiple organs, although the mechanistic nature of this protection is unresolved. Using cell-specific gene-targeting manipulations in mice undergoing liver damage, we elucidate a critical role for c-Rel in controlling metabolic changes required for inflammatory and fibrogenic activities of hepatocytes and macrophages and identify Pfkfb3 as the key downstream metabolic mediator of this response. Independent deletions of Rel in hepatocytes or macrophages suppressed liver fibrosis induced by carbon tetrachloride, while combined deletion had an additive anti-fibrogenic effect. In transforming growth factor-β1-induced hepatocytes, c-Rel regulates expression of a pro-fibrogenic secretome comprising inflammatory molecules and connective tissue growth factor, the latter promoting collagen secretion from HMs. Macrophages lacking c-Rel fail to polarize to M1 or M2 states, explaining reduced fibrosis in RelΔLysM mice. Pharmacological inhibition of c-Rel attenuated multi-organ fibrosis in both murine and human fibrosis. In conclusion, activation of c-Rel/Pfkfb3 in damaged tissue instigates a paracrine signalling network among epithelial, myeloid and mesenchymal cells to stimulate fibrogenesis. Targeting the c-Rel-Pfkfb3 axis has potential for therapeutic applications in fibrotic disease.
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Affiliation(s)
- Jack Leslie
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
| | - Marina García Macia
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Saimir Luli
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Julie C Worrell
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - William J Reilly
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Hannah L Paish
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Amber Knox
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Ben S Barksby
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Lucy M Gee
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Marco Y W Zaki
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Biochemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Amy L Collins
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Rachel A Burgoyne
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Rainie Cameron
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Charlotte Bragg
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Xin Xu
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Git W Chung
- Newcells Biotech, The Biosphere, Newcastle Helix, Newcastle upon Tyne, UK
| | - Colin D A Brown
- Newcells Biotech, The Biosphere, Newcastle Helix, Newcastle upon Tyne, UK
| | - Andrew D Blanchard
- Fibrosis Discovery Performance Unit, Respiratory Therapy Area, Medicines Research Centre, GlaxoSmithKline R&D, Stevenage, UK
| | - Carmel B Nanthakumar
- Fibrosis Discovery Performance Unit, Respiratory Therapy Area, Medicines Research Centre, GlaxoSmithKline R&D, Stevenage, UK
| | - Morten Karsdal
- Nordic Bioscience A/S, Biomarkers & Research, Herlev, Denmark
| | - Stuart M Robinson
- Department of Hepatobiliary Surgery, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Derek M Manas
- Department of Hepatobiliary Surgery, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Gourab Sen
- Department of Hepatobiliary Surgery, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Jeremy French
- Department of Hepatobiliary Surgery, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Steven A White
- Department of Hepatobiliary Surgery, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Sandra Murphy
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Matthias Trost
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Johannes L Zakrzewski
- Center for Discovery and Innovation and John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, NJ, USA
| | - Ulf Klein
- Division of Haematology & Immunology, Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | | | - Ingmar Mederacke
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Colin Nixon
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow, UK
| | - Tom Bird
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow, UK
- Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Glasgow, UK
- MRC Centre for Inflammation Research, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Laure-Anne Teuwen
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, Leuven, Belgium
| | - Luc Schoonjans
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, Leuven, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Leuven, Belgium
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, Leuven, Belgium
| | - Jelena Mann
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Fibrofind, Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Andrew J Fisher
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Institute of Transplantation, The Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Neil S Sheerin
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Lee A Borthwick
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Fibrofind, Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Derek A Mann
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- Fibrofind, Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Fiona Oakley
- Newcastle Fibrosis Research Group, Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
- Fibrofind, Medical School, Newcastle University, Newcastle upon Tyne, UK.
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8
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Biological Activity of Porcine Gastric Mucin on Stress Resistance and Immunomodulation. Molecules 2020; 25:molecules25132981. [PMID: 32610600 PMCID: PMC7411864 DOI: 10.3390/molecules25132981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 02/06/2023] Open
Abstract
Purified porcine gastric mucin (PGM) is an alternative biomaterial to native mucin which displays multifunctional properties for exploring a wide range of biomedical applications. The present study evaluated the in vitro (RAW 264.7 macrophage cells) and in vivo (zebrafish embryos and larvae) bioactivities of PGM. The median lethal concentration (LC50) of PGM was 197.9 µg/mL for embryos, while it was non-toxic to RAW 264.7 cells, even at 500 µg/mL. Following PGM exposure (100 µg/mL), a higher embryo hatching rate (59.9%) was observed at 48 h post fertilization, compared to the control (30.6%). Protective effects of PGM from pathogenic Aeromonas hydrophila were demonstrated by high larvae survival rates of 85.0% and 94.0% at 50 and 100 μg/mL of PGM exposure, respectively. Heat tolerance effect of PGM (50 and 100 µg/mL) on larvae (40 °C for 48 h) was confirmed by 75% and 100% of survival rates, respectively. Additionally, PGM reduced the A. hydrophila–induced reactive oxygen species (ROS) generation in larvae. The qRT-PCR results in PGM exposed larvae exhibited induction of immune-related genes (tlr5a and tlr5b, myd88, c-rel, il1β, tnf-α, il6, il10, cxcl18b, ccl34a.4, defbl1, hamp, ctsd, muc2.1, muc5.1, muc5.2, and muc5.3), stress response (hsp70, hsp90aa1.1, and hsp90ab1), and antioxidant genes (cat and sod1). Moreover, our results revealed that PGM involved in the regulation of transcriptional gene induction increases Hsp90 protein in the zebrafish larvae. Furthermore, upregulation of Il6, Il10, Tnfα, Ccl3, Defa-rs2, Defa21 and Camp and antioxidant genes (Sod2 and Cat) were observed in PGM-exposed RAW 264.7 cells. Overall findings confirmed the activation of immune responses, disease resistance against pathogenic bacteria, heat tolerance, and ROS-scavenging properties by PGM, which may provide insights into new applications for PGM as a multifunctional immunomodulator.
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9
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Regulation of B-cell function by NF-kappaB c-Rel in health and disease. Cell Mol Life Sci 2020; 77:3325-3340. [PMID: 32130429 DOI: 10.1007/s00018-020-03488-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/03/2020] [Accepted: 02/17/2020] [Indexed: 02/06/2023]
Abstract
B cells mediate humoral immune response and contribute to the regulation of cellular immune response. Members of the Nuclear Factor kappaB (NF-κB) family of transcription factors play a major role in regulating B-cell functions. NF-κB subunit c-Rel is predominantly expressed in lymphocytes, and in B cells, it is required for survival, proliferation, and antibody production. Dysregulation of c-Rel expression and activation alters B-cell homeostasis and is associated with B-cell lymphomas and autoimmune pathologies. Based on its essential roles, c-Rel may serve as a potential prognostic and therapeutic target. This review summarizes the current understanding of the multifaceted role of c-Rel in B cells and B-cell diseases.
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10
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Marta ŻN, Agnieszka W, Jacek P, Jeleń A, Adrian K, Dagmara SK, Sałagacka-Kubiak A, Balcerczak E. NFKB2 gene expression in patients with peptic ulcer diseases and gastric cancer. Mol Biol Rep 2020; 47:2015-2021. [PMID: 32056043 DOI: 10.1007/s11033-020-05299-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 01/31/2020] [Indexed: 12/18/2022]
Abstract
Gastric cancer is one of the most common worldwide types of cancer. It is a multifactorial disease and both environmental and genetic factors play an important role in its etiology. Evaluation of the relative expression level of NFKB2 gene in two groups of patients: peptic ulcer and gastric cancer and its role in the pathomechanism of these diseases was the aim of this study. RNA was isolated from: 79 samples of peptic ulcer, 22 gastric cancer and 11 control tissue. The real-time PCR technique was used to study the expression of NFKB2 gene. The relative expression level of NFKB2 gene was a variable in all three studied groups. The relative NFKB2 gene expression depends on the type of a disease. Peptic ulcer cases showed the increased relative NFKB2 gene expression to control group (p = 0.0000). Cancer cases presented decreased relative NFKB2 gene expression to normal stomach tissue (p = 0.0183). There are statistically important differences in the investigated gene expression between peptic ulcer, where the expression level is higher comparing to gastric cancer and control tissue which confirmed that such an activation is connected with an inflammatory process. The relative expression level of NFKB2 is decreased in cancer cases as opposed to control tissue and peptic ulcer cases which could suggest that during carcinogenesis of gastric cancer inhibition of NF-kB pathway takes place which could be a promising factor for patients.
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Affiliation(s)
- Żebrowska-Nawrocka Marta
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Wosiak Agnieszka
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Pietrzak Jacek
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Agnieszka Jeleń
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland.
| | - Krygier Adrian
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Szmajda-Krygier Dagmara
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Aleksandra Sałagacka-Kubiak
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Ewa Balcerczak
- Laboratory of Molecular Diagnostics and Pharmacogenomics, Department of Pharmaceutical Biochemistry and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
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11
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Priebe MK, Dewert N, Amschler K, Erpenbeck L, Heinzerling L, Schön MP, Seitz CS, Lorenz VN. c-Rel is a cell cycle modulator in human melanoma cells. Exp Dermatol 2018; 28:121-128. [PMID: 30466153 DOI: 10.1111/exd.13848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022]
Abstract
Melanoma progression and resistance to therapy are associated with faulty regulation of signalling molecules including the central transcription factor NF-κB. Increased expression of the c-Rel subunit of NF-κB has been described in progressing melanoma, though mechanistic implications of this upregulation remain unclear. To elucidate the functional role of c-Rel in melanoma biology, we have assessed its expression in human melanoma as well as in melanoma cell lines. Suppression of c-Rel expression in four melanoma cell lines resulted in reduced growth and altered cell cycle regulation, namely G2/M and polyploid phase induction. Moreover, mitotic spindle morphology was profoundly altered in three of the cell lines with a predominance of monopolar structures. These findings suggest that c-Rel is involved in G2/M phase regulation, prevention of polyploidy and, consequently, chromosomal stability. Our results highlight a novel tumor-promoting function of c-Rel in human melanoma cells through governing cell cycle regulation.
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Affiliation(s)
- Marie K Priebe
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Nadin Dewert
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Katharina Amschler
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Luise Erpenbeck
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Lucie Heinzerling
- Department of Dermatology, Friedrich Alexander University, Erlangen, Germany
| | - Michael P Schön
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Cornelia S Seitz
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
| | - Verena N Lorenz
- Department of Dermatology, Venereology and Allergology, Georg-August-University, University Medical Center Göttingen, Göttingen, Germany
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12
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A new piece of an old puzzle: lack of association between C-Rel (rs13031237-rs842647) single nucleotide polymorphisms and non-segmental vitiligo. BIOMEDICAL DERMATOLOGY 2018. [DOI: 10.1186/s41702-018-0027-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Yang X, Sun R, Ci L, Wang N, Yang S, Shi J, Yang H, Zhang M, Fei J. Tracing the dynamic expression of the Nfκb2 gene during inflammatory processes by in vivo bioluminescence imaging in transgenic mice. Biochem Biophys Res Commun 2018; 501:41-47. [PMID: 29680659 DOI: 10.1016/j.bbrc.2018.04.126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/16/2018] [Indexed: 02/08/2023]
Abstract
Nfκb2(p52/p100) plays essential roles in many chronic inflammatory diseases. Tracing the dynamic expression of Nfκb2 during different biological processes in vivo can provide valuable clues to understand the biological functions of this gene and develop anti-inflammatory drugs. In this study, B6-Tg(Nfκb2-luc)Mlit transgenic mouse line, a mouse model in which the expression of firefly luciferase gene is under the control of a 14.6-kb mouse Nfκb2 promoter, was generated to monitor the expression of p52/p100 in vivo. Bioluminescence imaging was used for tracking the luciferase signal in living mice in a variety of inflammatory processes, including LPS-induced sepsis and inflammatory bowel disease (IBD). The data of in vivo bioluminescence imaging in this mouse model showed that luciferase activity coincided with the endogenous p52/p100 expression. Moreover, dexamethasone or aspirin, two routine anti-inflammatory drugs, could decrease the high-level expression of luciferase induced by LPS. Overall, our results suggest that the B6-Tg(Nfκb2-luc)Mlit mice represent a valuable reporter mouse model not only to monitor the expression of p52/p100 in physiological or pathological processes but also to evaluate the effects of various anti-inflammatory drug treatments in vivo.
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Affiliation(s)
- Xingyu Yang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruilin Sun
- Shanghai Engineering Research Center for Model Organisms, SRCMO/SMOC, Shanghai, 201203, China
| | - Lei Ci
- Shanghai Engineering Research Center for Model Organisms, SRCMO/SMOC, Shanghai, 201203, China
| | - Ning Wang
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China
| | - Sai Yang
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China
| | - Jiahao Shi
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China
| | - Hua Yang
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China
| | - Mengjie Zhang
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China.
| | - Jian Fei
- School of Life Science & Technology, Tongji University, Shanghai, 200092, China; Shanghai Engineering Research Center for Model Organisms, SRCMO/SMOC, Shanghai, 201203, China.
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14
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Qian CJ, Qi YX, Chen XY, Zeng JP, Yao J. Sporamin suppresses growth of human esophageal squamous cell carcinoma cells by inhibition of NF‑κB via an AKT‑independent pathway. Mol Med Rep 2017; 16:9620-9626. [PMID: 29039512 DOI: 10.3892/mmr.2017.7772] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 06/15/2017] [Indexed: 12/28/2022] Open
Abstract
The aim of the present study was to determine whether sporamin, a trypsin inhibitor, suppresses the growth of human esophageal squamous cell carcinoma (ESCC) cells in vitro. Sporamin treatment led to the suppression of viability and proliferation of human ESCC cell lines, EC9706 and EC109, as determined by MTT and [3H] thymidine incorporation assays, respectively. Flow cytometry and fluorescence microscopy demonstrated that sporamin significantly induced apoptosis in EC9706 and EC109 cells. Western blotting demonstrated that sporamin downregulated the expression of Bcl‑2 and Bcl‑2 like 1, and upregulated the expression of Bcl‑2‑associated X in EC9706 and EC109 cells. In addition, marked inhibition of nuclear factor (NF)‑κB activation was observed in sporamin‑treated EC9706 and EC109 cells by an electrophoretic mobility shift assay. Sporamin treatment also resulted in reduced expression levels of phosphorylated (p)‑NF‑κB inhibitor α and nuclear NF‑κB p65. However, the expression levels of p‑protein inase (AKT) and its downstream target, p‑p70 S6 kinase, were not markedly altered following sporamin treatment. In conclusion, sporamin may suppress the growth of human ESCC cells via NF‑κB‑dependent and AKT‑independent mechanisms and may act as a promising natural therapeutic agent for the treatment of human ESCC.
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Affiliation(s)
- Cui-Juan Qian
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Yong-Xiao Qi
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Xiao-Ying Chen
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Ju-Ping Zeng
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
| | - Jun Yao
- Institute of Tumor, School of Medicine, Taizhou University, Taizhou, Zhejiang 318000, P.R. China
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15
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Surdziel E, Clay I, Nigsch F, Thiemeyer A, Allard C, Hoffman G, Reece-Hoyes JS, Phadke T, Gambert R, Keller CG, Ludwig MG, Baumgarten B, Frederiksen M, Schübeler D, Seuwen K, Bouwmeester T, Fodor BD. Multidimensional pooled shRNA screens in human THP-1 cells identify candidate modulators of macrophage polarization. PLoS One 2017; 12:e0183679. [PMID: 28837623 PMCID: PMC5570424 DOI: 10.1371/journal.pone.0183679] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/09/2017] [Indexed: 01/05/2023] Open
Abstract
Macrophages are key cell types of the innate immune system regulating host defense, inflammation, tissue homeostasis and cancer. Within this functional spectrum diverse and often opposing phenotypes are displayed which are dictated by environmental clues and depend on highly plastic transcriptional programs. Among these the 'classical' (M1) and 'alternative' (M2) macrophage polarization phenotypes are the best characterized. Understanding macrophage polarization in humans may reveal novel therapeutic intervention possibilities for chronic inflammation, wound healing and cancer. Systematic loss of function screening in human primary macrophages is limited due to lack of robust gene delivery methods and limited sample availability. To overcome these hurdles we developed cell-autonomous assays using the THP-1 cell line allowing genetic screens for human macrophage phenotypes. We screened 648 chromatin and signaling regulators with a pooled shRNA library for M1 and M2 polarization modulators. Validation experiments confirmed the primary screening results and identified OGT (O-linked N-acetylglucosamine (GlcNAc) transferase) as a novel mediator of M2 polarization in human macrophages. Our approach offers a possible avenue to utilize comprehensive genetic tools to identify novel candidate genes regulating macrophage polarization in humans.
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Affiliation(s)
- Ewa Surdziel
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Ieuan Clay
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Florian Nigsch
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Anke Thiemeyer
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Cyril Allard
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Gregory Hoffman
- Novartis Institutes for Biomedical Research, Cambridge, United States of America
| | - John S. Reece-Hoyes
- Novartis Institutes for Biomedical Research, Cambridge, United States of America
| | - Tanushree Phadke
- Novartis Institutes for Biomedical Research, Cambridge, United States of America
| | - Romain Gambert
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | | | | | | | | | - Dirk Schübeler
- Friedrich Miescher Institute for BioMedical Research, Basel, Switzerland
| | - Klaus Seuwen
- Novartis Institutes for Biomedical Research, Basel, Switzerland
| | | | - Barna D. Fodor
- Novartis Institutes for Biomedical Research, Basel, Switzerland
- * E-mail:
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16
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Silencing c‐Rel in macrophages dampens Th1 and Th17 immune responses and alleviates experimental autoimmune encephalomyelitis in mice. Immunol Cell Biol 2017; 95:593-600. [DOI: 10.1038/icb.2017.11] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 02/13/2017] [Accepted: 02/13/2017] [Indexed: 12/25/2022]
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17
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Hunter JE, Butterworth JA, Zhao B, Sellier H, Campbell KJ, Thomas HD, Bacon CM, Cockell SJ, Gewurz BE, Perkins ND. The NF-κB subunit c-Rel regulates Bach2 tumour suppressor expression in B-cell lymphoma. Oncogene 2016; 35:3476-84. [PMID: 26522720 PMCID: PMC4853301 DOI: 10.1038/onc.2015.399] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 08/13/2015] [Accepted: 09/04/2015] [Indexed: 12/15/2022]
Abstract
The REL gene, encoding the NF-κB subunit c-Rel, is frequently amplified in B-cell lymphoma and functions as a tumour-promoting transcription factor. Here we report the surprising result that c-rel-/- mice display significantly earlier lymphomagenesis in the c-Myc driven, Eμ-Myc model of B-cell lymphoma. c-Rel loss also led to earlier onset of disease in a separate TCL1-Tg-driven lymphoma model. Tumour reimplantation experiments indicated that this is an effect intrinsic to the Eμ-Myc lymphoma cells but, counterintuitively, c-rel-/- Eμ-Myc lymphoma cells were more sensitive to apoptotic stimuli. To learn more about why loss of c-Rel led to earlier onset of disease, microarray gene expression analysis was performed on B cells from 4-week-old, wild-type and c-rel-/- Eμ-Myc mice. Extensive changes in gene expression were not seen at this age, but among those transcripts significantly downregulated by the loss of c-Rel was the B-cell tumour suppressor BTB and CNC homology 2 (Bach2). Quantitative PCR and western blot analysis confirmed loss of Bach2 in c-Rel mutant Eμ-Myc tumours at both 4 weeks and the terminal stages of disease. Moreover, Bach2 expression was also downregulated in c-rel-/- TCL1-Tg mice and RelA Thr505Ala mutant Eμ-Myc mice. Analysis of wild-type Eμ-Myc mice demonstrated that the population expressing low levels of Bach2 exhibited the earlier onset of lymphoma seen in c-rel-/- mice. Confirming the relevance of these findings to human disease, analysis of chromatin immunoprecipitation sequencing data revealed that Bach2 is a c-Rel and NF-κB target gene in transformed human B cells, whereas treatment of Burkitt's lymphoma cells with inhibitors of the NF-κB/IκB kinase pathway or deletion of c-Rel or RelA resulted in loss of Bach2 expression. These data reveal a surprising tumour suppressor role for c-Rel in lymphoma development explained by regulation of Bach2 expression, underlining the context-dependent complexity of NF-κB signalling in cancer.
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Affiliation(s)
- J E Hunter
- Institute for Cell and Molecular Biosciences (ICaMB), Newcastle University Medical School, Newcastle Upon Tyne, UK
| | - J A Butterworth
- Institute for Cell and Molecular Biosciences (ICaMB), Newcastle University Medical School, Newcastle Upon Tyne, UK
| | - B Zhao
- Brigham and Women's Hospital, Boston, MA, USA
| | - H Sellier
- Institute for Cell and Molecular Biosciences (ICaMB), Newcastle University Medical School, Newcastle Upon Tyne, UK
| | - K J Campbell
- The Beatson Institute for Cancer Research, Glasgow, UK
| | - H D Thomas
- Northern Institute for Cancer Research, Newcastle Upon Tyne, UK
| | - C M Bacon
- Northern Institute for Cancer Research, Newcastle Upon Tyne, UK
| | - S J Cockell
- Bioinformatics Support Unit, Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne, UK
| | - B E Gewurz
- Brigham and Women's Hospital, Boston, MA, USA
| | - N D Perkins
- Institute for Cell and Molecular Biosciences (ICaMB), Newcastle University Medical School, Newcastle Upon Tyne, UK
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18
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Lorenz VN, Schön MP, Seitz CS. c-Rel in Epidermal Homeostasis: A Spotlight on c-Rel in Cell Cycle Regulation. J Invest Dermatol 2016; 136:1090-1096. [PMID: 27032306 DOI: 10.1016/j.jid.2016.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 01/15/2016] [Accepted: 02/03/2016] [Indexed: 12/19/2022]
Abstract
To maintain proper skin barrier function, epidermal homeostasis requires a subtly governed balance of proliferating and differentiating keratinocytes. While differentiation takes place in the suprabasal layers, proliferation, including mitosis, is usually restricted to the basal layer. Only recently identified as an important regulator of epidermal homeostasis, c-Rel, an NF-κB transcription factor subunit, affects the viability and proliferation of epidermal keratinocytes. In human keratinocytes, decreased expression of c-Rel causes a plethora of dysregulated cellular functions including impaired cell viability, increased apoptosis, and abnormalities during mitosis and cell cycle regulation. On the other hand, c-Rel shows aberrant expression in many epidermal tumors. Here, in the context of its role in different cell types and compared with other NF-κB subunits, we discuss the putative function of c-Rel as a regulator of epidermal homeostasis and mitotic progression. In addition, implications for disease pathophysiology with perturbed c-Rel function and abnormal homeostasis, such as epidermal carcinogenesis, will be discussed.
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Affiliation(s)
- Verena N Lorenz
- Department of Dermatology, Venereology and Allergology, Georg August University, Göttingen, Germany.
| | - Michael P Schön
- Department of Dermatology, Venereology and Allergology, Georg August University, Göttingen, Germany
| | - Cornelia S Seitz
- Department of Dermatology, Venereology and Allergology, Georg August University, Göttingen, Germany
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19
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Shono Y, Tuckett AZ, Liou HC, Doubrovina E, Derenzini E, Ouk S, Tsai JJ, Smith OM, Levy ER, Kreines FM, Ziegler CGK, Scallion MI, Doubrovin M, Heller G, Younes A, O'Reilly RJ, van den Brink MRM, Zakrzewski JL. Characterization of a c-Rel Inhibitor That Mediates Anticancer Properties in Hematologic Malignancies by Blocking NF-κB-Controlled Oxidative Stress Responses. Cancer Res 2016; 76:377-89. [PMID: 26744524 DOI: 10.1158/0008-5472.can-14-2814] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 10/14/2015] [Indexed: 12/22/2022]
Abstract
NF-κB plays a variety of roles in oncogenesis and immunity that may be beneficial for therapeutic targeting, but strategies to selectively inhibit NF-κB to exert antitumor activity have been elusive. Here, we describe IT-901, a bioactive naphthalenethiobarbiturate derivative that potently inhibits the NF-κB subunit c-Rel. IT-901 suppressed graft-versus-host disease while preserving graft-versus-lymphoma activity during allogeneic transplantation. Further preclinical assessment of IT-901 for the treatment of human B-cell lymphoma revealed antitumor properties in vitro and in vivo without restriction to NF-κB-dependent lymphoma. This nondiscriminatory, antilymphoma effect was attributed to modulation of the redox homeostasis in lymphoma cells resulting in oxidative stress. Moreover, NF-κB inhibition by IT-901 resulted in reduced stimulation of the oxidative stress response gene heme oxygenase-1, and we demonstrated that NF-κB inhibition exacerbated oxidative stress induction to inhibit growth of lymphoma cells. Notably, IT-901 did not elicit increased levels of reactive oxygen species in normal leukocytes, illustrating its cancer selective properties. Taken together, our results provide mechanistic insight and preclinical proof of concept for IT-901 as a novel therapeutic agent to treat human lymphoid tumors and ameliorate graft-versus-host disease.
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Affiliation(s)
- Yusuke Shono
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Andrea Z Tuckett
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Ekaterina Doubrovina
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Enrico Derenzini
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Samedy Ouk
- ImmuneTarget Inc., San Diego, California
| | - Jennifer J Tsai
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Odette M Smith
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Emily R Levy
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Fabiana M Kreines
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Carly G K Ziegler
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York. Department of Computational Biology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Mary I Scallion
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Mikhail Doubrovin
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Glenn Heller
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Anas Younes
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Richard J O'Reilly
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Marcel R M van den Brink
- Department of Immunology, Memorial Sloan Kettering Cancer Center, New York, New York. Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Johannes L Zakrzewski
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, New York.
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20
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Mining for Candidate Genes Related to Pancreatic Cancer Using Protein-Protein Interactions and a Shortest Path Approach. BIOMED RESEARCH INTERNATIONAL 2015; 2015:623121. [PMID: 26613085 PMCID: PMC4647023 DOI: 10.1155/2015/623121] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 10/15/2015] [Indexed: 12/13/2022]
Abstract
Pancreatic cancer (PC) is a highly malignant tumor derived from pancreas tissue and is one of the leading causes of death from cancer. Its molecular mechanism has been partially revealed by validating its oncogenes and tumor suppressor genes; however, the available data remain insufficient for medical workers to design effective treatments. Large-scale identification of PC-related genes can promote studies on PC. In this study, we propose a computational method for mining new candidate PC-related genes. A large network was constructed using protein-protein interaction information, and a shortest path approach was applied to mine new candidate genes based on validated PC-related genes. In addition, a permutation test was adopted to further select key candidate genes. Finally, for all discovered candidate genes, the likelihood that the genes are novel PC-related genes is discussed based on their currently known functions.
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21
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Charron CS, Dawson HD, Albaugh GP, Solverson PM, Vinyard BT, Solano-Aguilar GI, Molokin A, Novotny JA. A Single Meal Containing Raw, Crushed Garlic Influences Expression of Immunity- and Cancer-Related Genes in Whole Blood of Humans. J Nutr 2015; 145:2448-55. [PMID: 26423732 PMCID: PMC4620724 DOI: 10.3945/jn.115.215392] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/20/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Preclinical and epidemiologic studies suggest that garlic intake is inversely associated with the progression of cancer and cardiovascular disease. OBJECTIVE We designed a study to probe the mechanisms of garlic action in humans. METHODS We conducted a randomized crossover feeding trial in which 17 volunteers consumed a garlic-containing meal (100 g white bread, 15 g butter, and 5 g raw, crushed garlic) or a garlic-free control meal (100 g white bread and 15 g butter) after 10 d of consuming a controlled, garlic-free diet. Blood was collected before and 3 h after test meal consumption for gene expression analysis in whole blood. Illumina BeadArray was used to screen for genes of interest, followed by real-time quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) on selected genes. To augment human study findings, Mono Mac 6 cells were treated with a purified garlic extract (0.5 μL/mL), and mRNA was measured by qRT-PCR at 0, 3, 6, and 24 h. RESULTS The following 7 genes were found to be upregulated by garlic intake: aryl hydrocarbon receptor (AHR), aryl hydrocarbon receptor nuclear translocator (ARNT), hypoxia-inducible factor 1α (HIF1A), proto-oncogene c-Jun (JUN), nuclear factor of activated T cells (NFAT) activating protein with immunoreceptor tyrosine-based activation motif 1 (NFAM1), oncostatin M (OSM), and V-rel avian reticuloendotheliosis viral oncogene homolog (REL). Fold-increases in mRNA transcripts ranged from 1.6 (HIF1A) to 3.0 (NFAM1) (P < 0.05). The mRNA levels of 5 of the 7 genes that were upregulated in the human trial were also upregulated in cell culture at 3 and 6 h: AHR, HIF1A, JUN, OSM, and REL. Fold-increases in mRNA transcripts in cell culture ranged from 1.7 (HIF1A) to 12.1 (JUN) (P < 0.01). OSM protein was measured by ELISA and was significantly higher than the control at 3, 6, and 24 h (24 h: 19.5 ± 1.4 and 74.8 ± 1.4 pg/mL for control and garlic, respectively). OSM is a pleiotropic cytokine that inhibits several tumor cell lines in culture. CONCLUSION These data indicate that the bioactivity of garlic is multifaceted and includes activation of genes related to immunity, apoptosis, and xenobiotic metabolism in humans and Mono Mac 6 cells. This trial is registered at clinicaltrials.gov as NCT01293591.
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Affiliation(s)
| | | | | | | | - Bryan T Vinyard
- Biometrical Consulting Services, USDA, Agricultural Research Service, Beltsville, MD
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22
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Laguna T, Notario L, Pippa R, Fontela MG, Vázquez BN, Maicas M, Aguilera-Montilla N, Corbí ÁL, Odero MD, Lauzurica P. New insights on the transcriptional regulation of CD69 gene through a potent enhancer located in the conserved non-coding sequence 2. Mol Immunol 2015; 66:171-9. [PMID: 25801305 DOI: 10.1016/j.molimm.2015.02.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 02/25/2015] [Accepted: 02/27/2015] [Indexed: 01/03/2023]
Abstract
The CD69 type II C-type lectin is one of the earliest indicators of leukocyte activation acting in lymphocyte migration and cytokine secretion. CD69 expression in hematopoietic lineage undergoes rapid changes depending on the cell-lineage, the activation state or the localization of the cell where it is expressed, suggesting a complex and tightly controlled regulation. Here we provide new insights on the transcriptional regulation of CD69 gene in mammal species. Through in silico studies, we analyzed several regulatory features of the 4 upstream conserved non-coding sequences (CNS 1-4) previously described, confirming a major function of CNS2 in the transcriptional regulation of CD69. In addition, multiple transcription binding sites are identified in the CNS2 region by DNA cross-species conservation analysis. By functional approaches we defined a core region of 226bp located within CNS2 as the main enhancer element of CD69 transcription in the hematopoietic cells analyzed. By chromatin immunoprecipitation, binding of RUNX1 to the core-CNS2 was shown in a T cell line. In addition, we found an activating but not essential role of RUNX1 in CD69 gene transcription by site-directed mutagenesis and RNA silencing, probably through the interaction with this potent enhancer specifically in the hematopoietic lineage. In summary, in this study we contribute with new evidences to the landscape of the transcriptional regulation of the CD69 gene.
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Affiliation(s)
- Teresa Laguna
- Activación Immunológica Group, Carlos III National Health Institute (ISCIII), Majadahonda, Spain
| | - Laura Notario
- Activación Immunológica Group, Carlos III National Health Institute (ISCIII), Majadahonda, Spain
| | - Raffaella Pippa
- Laboratory of Genetics, Division of Oncology, CIMA, University of Navarra, Pamplona, Spain
| | - Miguel G Fontela
- Activación Immunológica Group, Carlos III National Health Institute (ISCIII), Majadahonda, Spain
| | - Berta N Vázquez
- Activación Immunológica Group, Carlos III National Health Institute (ISCIII), Majadahonda, Spain
| | - Miren Maicas
- Laboratory of Genetics, Division of Oncology, CIMA, University of Navarra, Pamplona, Spain
| | - Noemí Aguilera-Montilla
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Ángel L Corbí
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - María D Odero
- Laboratory of Genetics, Division of Oncology, CIMA, University of Navarra, Pamplona, Spain
| | - Pilar Lauzurica
- Activación Immunológica Group, Carlos III National Health Institute (ISCIII), Majadahonda, Spain.
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Lv M, Wang L. Comprehensive analysis of genes, pathways, and TFs in nonsmoking Taiwan females with lung cancer. Exp Lung Res 2014; 41:74-83. [DOI: 10.3109/01902148.2014.971472] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Davis LA, Whitfield E, Cannon GW, Wolff RK, Johnson DS, Reimold AM, Kerr GS, Richards JS, Mikuls TR, Caplan L. Association of rheumatoid arthritis susceptibility gene with lipid profiles in patients with rheumatoid arthritis. Rheumatology (Oxford) 2014; 53:1014-21. [PMID: 24489016 DOI: 10.1093/rheumatology/ket472] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE RA patients have an increased risk of cardiovascular (CV) disease, although the mechanisms are unclear. As RA and CV disease may be associated through lipid profiles, we examined whether single nucleotide polymorphisms (SNPs) associated with RA susceptibility were associated with low-density lipoprotein (LDL), high-density lipoprotein (HDL) and triglyceride (TG) levels in RA subjects. METHODS Patients (n = 763) enrolled in the Veterans Affairs RA registry who were not on hydroxymethylglutaryl-CoA reductase inhibitor were genotyped for human leukocyte antigen shared epitope (HLA-DRB1-SE) and SNPs in the following genes: CTLA-4 (cytotoxic T-lymphocyte antigen 4), IL-10, PTPN22 (protein tyrosine phosphatase, non-receptor type 22), REL (c-Rel), STAT4 (signal transducer and activator of transcription protein), TNF- and TRAF1 (TNF receptor-associated factor 1). Other covariates included patient characteristics (age, gender, race, smoking status, education, BMI, modified CharlsonDeyo comorbidity index), CV characteristics (hypertension, diabetes, alcohol abuse), pharmacologic exposures (MTX, anti-TNF, glucocorticoids) and RA severity/activity markers (RA disease duration, mean DAS, CRP, RF positivity, anti-CCP positivity). Multivariate linear regression was performed to determine the factors associated with LDL, HDL and TG levels. RESULTS The REL SNP rs9309331 homozygous minor allele was associated with higher LDL levels. Caucasian race and increasing BMI were associated with lower HDL. Factors associated with higher TG were diabetes, Caucasian race and higher BMI. CONCLUSION The REL SNP rs9309331 was associated with LDL levels in our study. This association is a possible explanation of the increased risk of RA patients for CV disease and requires further inquiry.
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25
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Shono Y, Tuckett AZ, Ouk S, Liou HC, Altan-Bonnet G, Tsai JJ, Oyler JE, Smith OM, West ML, Singer NV, Doubrovina E, Pankov D, Undhad CV, Murphy GF, Lezcano C, Liu C, O'Reilly RJ, van den Brink MRM, Zakrzewski JL. A small-molecule c-Rel inhibitor reduces alloactivation of T cells without compromising antitumor activity. Cancer Discov 2014; 4:578-91. [PMID: 24550032 DOI: 10.1158/2159-8290.cd-13-0585] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Preventing unfavorable GVHD without inducing broad suppression of the immune system presents a major challenge of allogeneic hematopoietic stem cell transplantation (allo-HSCT). We developed a novel strategy to ameliorate GVHD while preserving graft-versus-tumor (GVT) activity by small molecule-based inhibition of the NF-κB family member c-Rel. Underlying mechanisms included reduced alloactivation, defective gut homing, and impaired negative feedback on interleukin (IL)-2 production, resulting in optimal IL-2 levels, which, in the absence of competition by effector T cells, translated into expansion of regulatory T cells. c-Rel activity was dispensable for antigen-specific T-cell receptor (TCR) activation, allowing c-Rel-deficient T cells to display normal GVT activity. In addition, inhibition of c-Rel activity reduced alloactivation without compromising antigen-specific cytotoxicity of human T cells. Finally, we were able to demonstrate the feasibility and efficacy of systemic c-Rel inhibitor administration. Our findings validate c-Rel as a promising target for immunomodulatory therapy and demonstrate the feasibility and efficacy of pharmaceutical inhibition of c-Rel activity.
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Affiliation(s)
- Yusuke Shono
- Departments of 1Immunology, 2Computational Biology and Immunology, 3Pediatrics, and 4Medicine and Immunology, Memorial Sloan-Kettering Cancer Center; 5Department of Immunology, Weill-Cornell Medical Center, New York, New York; 6Program in Dermatopathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts; and 7Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida
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26
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Zheng M, Jiang J, Tang YL, Liang XH. Oncogene and non-oncogene addiction in inflammation-associated cancers. Future Oncol 2013; 9:561-73. [PMID: 23560378 DOI: 10.2217/fon.12.202] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Many cancers originate in tissues that are chronically inflamed, and the inflammatory microenvironment is considered to promote the progression of malignancy, including initiation, growth, angiogenesis, invasion and metastasis. The molecular mechanism of inflammation-induced progression of cancers has been widely discussed. Oncogene and non-oncogene addiction have been proposed as two distinct but complementary theories to explain the initiation and development of cancers. Furthermore, they also play a role in cancer-associated inflammation. A solid understanding of oncogene and non-oncogene addiction in cancer-associated inflammatory microenvironments will help to exploit cancer drug targets for cancer prevention and clinical treatment.
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Affiliation(s)
- Min Zheng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Sec. 3, Renminnan Road, Chengdu Sichuan 610041, People's Republic of China
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27
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Hart GW. Nutrient regulation of immunity: O-GlcNAcylation regulates stimulus-specific NF-κB-dependent transcription. Sci Signal 2013; 6:pe26. [PMID: 23982203 DOI: 10.1126/scisignal.2004596] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Nutrients regulate gene transcription by the dynamic cycling of O-linked N-acetylglucosamine (O-GlcNAc) on proteins that constitute the transcriptional machinery. A study shows that O-GlcNAcylation of the nuclear factor κB (NF-κB) subunit c-Rel is required for its binding to the promoters of some, but not all, key T cell receptor-dependent genes; however, O-GlcNAcylation is dispensable for the binding of c-Rel to the promoters of tumor necrosis factor-α-dependent genes. This study not only illustrates how specific stimuli that act on the same transcription factor can elicit the expression of particular sets of genes, it also suggests a possible mechanism for autoimmunity in diabetes.
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Affiliation(s)
- Gerald W Hart
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
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28
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Oliveira-Marques V, Silva T, Cunha F, Covas G, Marinho HS, Antunes F, Cyrne L. A quantitative study of the cell-type specific modulation of c-Rel by hydrogen peroxide and TNF-α. Redox Biol 2013; 1:347-52. [PMID: 24024170 PMCID: PMC3757704 DOI: 10.1016/j.redox.2013.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/22/2013] [Accepted: 05/29/2013] [Indexed: 01/12/2023] Open
Abstract
Hydrogen peroxide (H2O2) at moderate steady-state concentrations synergizes with TNF-α, leading to increased nuclear levels of NF-κB p65 subunit and to a cell-type specific up-regulation of a limited number of NF-κB-dependent genes. Here, we address how H2O2 achieves this molecular specificity. HeLa and MCF-7 cells were exposed to steady-state H2O2 and/or TNF-α and levels of c-Rel, p65, IκB-α, IκB-β and IκB-ε were determined. For an extracellular concentration of 25 µM H2O2, the intracellular H2O2 concentration is 3.7 µM and 12.5 µM for respectively HeLa and MCF-7 cells. The higher cytosolic H2O2 concentration present in MCF-7 cells may be a contributing factor for the higher activation of NF-κB caused by H2O2 in this cell line, when compared to HeLa cells. In both cells lines, H2O2 precludes the recovery of TNF-α-dependent IκB-α degradation, which may explain the observed synergism between H2O2 and TNF-α concerning p65 nuclear translocation. In MCF-7 cells, H2O2, in the presence of TNF-α, tripled the induction of c-Rel triggered either by TNF-α or H2O2. Conversely, in HeLa cells, H2O2 had a small antagonistic effect on TNF-α-induced c-Rel nuclear levels, concomitantly with a 50 % induction of IκB-ε, the preferential inhibitor protein of c-Rel dimers. The 6-fold higher c-Rel/IκB-ε ratio found in MCF-7 cells when compared with HeLa cells, may be a contributing factor for the cell-type dependent modulation of c-Rel by H2O2. Our results suggest that H2O2 might have an important cell-type specific role in the regulation of c-Rel-dependent processes, e.g. cancer or wound healing. Selective modulation of individual NF-κB-dependent genes expression by H2O2. In MCF-7 cells H2O2 tripled the TNF-α 4-fold induction of c-Rel nuclear levels. In HeLa cells, H2O2 had an antagonistic effect on TNF-α induced c-Rel translocation. c-Rel dimers bind chiefly to IκB-α/IκB-ε in MCF-7 cells and to IκB-ε in HeLa cells.
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Key Words
- GPx, glutathione peroxidase
- H2O2 gradient
- H2O2, hydrogen peroxide
- HeLa cells
- Inflammation
- IκB-α, inhibitory protein α of NF-κB
- IκB-β, inhibitory protein β of NF-κB
- IκB-ε, inhibitory protein ε of NF-κB
- MCF-7 cells
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- NF-κB
- NF-κB, nuclear factor-kappa B
- Steady-state
- TNF-α, tumor necrosis factor-alpha
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Affiliation(s)
- Virgínia Oliveira-Marques
- Grupo de Biologia Redox, Centro de Química e Bioquímica and Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, C8, 1749-016 Lisboa, Portugal
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Yu Q, Zhou C, Wang J, Chen L, Zheng S, Zhang J. A functional insertion/deletion polymorphism in the promoter of PDCD6IP is associated with the susceptibility of hepatocellular carcinoma in a Chinese population. DNA Cell Biol 2013; 32:451-7. [PMID: 23777424 DOI: 10.1089/dna.2013.2061] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide. Apart from environmental factors such as hepatitis B virus (HBV) or hepatitis C virus, alcohol abuse, and exposure to dietary aflatoxin, genetic factors are also involved in the pathogenesis of HCC. By analyzing 390 HCC cases and 431 healthy controls in a Chinese population, we used a candidate gene approach to evaluate the association between a 15-bp insertion/deletion (indel) polymorphism (rs28381975) in the promoter region of the programmed cell death 6 interacting protein (PDCD6IP) gene and HCC susceptibility. Logistic regression analysis demonstrated that subjects carrying ins/del or ins/ins genotypes had significantly increased risk for HCC than individuals carrying del/del genotypes (adjusted odds ratio=1.39, 95% confidence interval=1.01-1.91, p=0.033]. Carrying the 15-bp insertion allele was associated with a 1.26-fold risk for HCC (95% CI=1.04-1.54, p=0.018). Moreover, significant differences were observed within HCC patients concerning genotypic frequencies of rs28381975 after stratifying by tumor stages and HBV infection. Computational modeling suggests that rs28381975 could disrupt the binding patterns of c-rel, a key subunit of nuclear factor-kappaB transcription factor. Further luciferase-based transient transfection assays revealed that rs28381975 can affect the promoter activity of PDCD6IP, indicating its possible functional significance. Taken together, our data suggest that common genetic variations in PDCD6IP may influence HCC risk, possibly through promoter activity-mediated regulation. Replication of our studies in other populations and further functional analysis will strengthen our understanding of this association.
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Affiliation(s)
- Qiang Yu
- Department of Gastroenterology, Suzhou Municipal Hospital, Affiliated to Nanjing Medical University, Suzhou, Jiangsu, China
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30
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Fullard N, Moles A, O'Reilly S, van Laar JM, Faini D, Diboll J, Reynolds NJ, Mann DA, Reichelt J, Oakley F. The c-Rel subunit of NF-κB regulates epidermal homeostasis and promotes skin fibrosis in mice. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:2109-20. [PMID: 23562440 DOI: 10.1016/j.ajpath.2013.02.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 02/11/2013] [Accepted: 02/12/2013] [Indexed: 10/27/2022]
Abstract
The five subunits of transcription factor NF-κB have distinct biological functions. NF-κB signaling is important for skin homeostasis and aging, but the contribution of individual subunits to normal skin biology and disease is unclear. Immunohistochemical analysis of the p50 and c-Rel subunits within lesional psoriatic and systemic sclerosis skin revealed abnormal epidermal expression patterns, compared with healthy skin, but RelA distribution was unaltered. The skin of Nfkb1(-/-) and c-Rel(-/-) mice is structurally normal, but epidermal thickness and proliferation are significantly reduced, compared with wild-type mice. We show that the primary defect in both Nfkb1(-/-) and c-Rel(-/-) mice is within keratinocytes that display reduced proliferation both in vitro and in vivo. However, both genotypes can respond to proliferative stress, with 12-O-tetradecanoylphorbol-13-acetate-induced epidermal hyperproliferation and closure rates of full-thickness skin wounds being equivalent to those of wild-type controls. In a model of bleomycin-induced skin fibrosis, Nfkb1(-/-) and c-Rel(-/-) mice displayed opposite phenotypes, with c-Rel(-/-) mice being protected and Nfkb1(-/-) developing more fibrosis than wild-type mice. Taken together, our data reveal a role for p50 and c-Rel in regulating epidermal proliferation and homeostasis and a profibrogenic role for c-Rel in the skin, and identify a link between epidermal c-Rel expression and systemic sclerosis. Modulating the actions of these subunits could be beneficial for treating hyperproliferative or fibrogenic diseases of the skin.
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Affiliation(s)
- Nicola Fullard
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
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Yang X, Jing H, Zhao K, Sun R, Liu Z, Ying Y, Ci L, Kuang Y, Huang F, Wang Z, Fei J. Functional imaging of Rel expression in inflammatory processes using bioluminescence imaging system in transgenic mice. PLoS One 2013; 8:e57632. [PMID: 23469037 PMCID: PMC3585201 DOI: 10.1371/journal.pone.0057632] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 01/22/2013] [Indexed: 12/11/2022] Open
Abstract
c-Rel plays important roles in many inflammatory diseases. Revealing the dynamic expression of c-Rel in disease processes in vivo is critical for understanding c-Rel functions and for developing anti-inflammatory drugs. In this paper, a transgenic mouse line, B6-Tg(c-Rel-luc)(Mlit), which incorporated the transgene firefly luciferase driven by a 14.5-kb fragment containing mouse c-Rel gene Rel promoter, was generated to monitor Rel expression in vivo. Luciferase expression could be tracked in living mice by the method of bioluminescence imaging in a variety of inflammatory processes, including LPS induced sepsis and EAE disease model. The luciferase expression in transgenic mice was comparable to the endogenous Rel expression and could be suppressed by administration of anti-inflammatory drug dexamethasone or aspirin. These results indicate that the B6-Tg(c-Rel-luc)(Mlit) mouse is a valuable animal model to study Rel expression in physiological and pathological processes, and the effects of various drug treatments in vivo.
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Affiliation(s)
- Xingyu Yang
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Hua Jing
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Kai Zhao
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Ruilin Sun
- Shanghai Research Center for Model Organisms, Shanghai, China
| | - Zhenze Liu
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Yue Ying
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Lei Ci
- School of Life Science and Technology, Tongji University, Shanghai, China
| | - Ying Kuang
- Shanghai Research Center for Model Organisms, Shanghai, China
| | - Fang Huang
- National Key Laboratory of Medical Neurobiology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhugang Wang
- Shanghai Research Center for Model Organisms, Shanghai, China
| | - Jian Fei
- School of Life Science and Technology, Tongji University, Shanghai, China
- Shanghai Research Center for Model Organisms, Shanghai, China
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Sarma NJ, Tiriveedhi V, Subramanian V, Shenoy S, Crippin JS, Chapman WC, Mohanakumar T. Hepatitis C virus mediated changes in miRNA-449a modulates inflammatory biomarker YKL40 through components of the NOTCH signaling pathway. PLoS One 2012; 7:e50826. [PMID: 23226395 PMCID: PMC3511274 DOI: 10.1371/journal.pone.0050826] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 10/25/2012] [Indexed: 12/12/2022] Open
Abstract
Liver disease due to hepatitis C virus (HCV) infection is an important health problem worldwide. HCV induced changes in microRNAs (miRNA) are shown to mediate inflammation leading to liver fibrosis. Gene expression analyses identified dysregulation of miRNA-449a in HCV patients but not in alcoholic and non-alcoholic liver diseases. By sequence analysis of the promoter for YKL40, an inflammatory marker upregulated in patients with chronic liver diseases with fibrosis, adjacent binding sites for nuclear factor of Kappa B/P65 and CCAAT/enhancer-binding protein alpha (CEBPα) were identified. P65 interacted with CEBPα to co-operatively activate YKL40 expression through sequence specific DNA binding. In vitro analysis demonstrated that tumor necrosis factor alpha (TNFα) mediated YKL40 expression is regulated by miRNA-449a and its target NOTCH1 in human hepatocytes.NOTCH1 facilitated nuclear localization of P65 in response to TNFα. Further, HCV patients demonstrated upregulation of NOTCH1 along with downregulation of miRNA-449a. Taken together it is demonstrated that miRNA-449a plays an important role in modulating expression of YKL40 through targeting the components of the NOTCH signaling pathway following HCV infection. Therefore, defining transcriptional regulatory mechanisms which control inflammatory responses and fibrosis will be important towards developing strategies to prevent hepatic fibrosis especially following HCV recurrence in liver transplant recipients.
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Affiliation(s)
- Nayan J. Sarma
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Venkataswarup Tiriveedhi
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Vijay Subramanian
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Surendra Shenoy
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Jeffrey S. Crippin
- Department of Medicine, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - William C. Chapman
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Thalachallour Mohanakumar
- Department of Surgery, Washington University School of Medicine, Saint Louis, Missouri, United States of America
- Department of Pathology & Immunology, Washington University School of Medicine, Saint Louis, Missouri, United States of America
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