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Blaj LA, Cucu AI, Tamba BI, Turliuc MD. The Role of the NF-kB Pathway in Intracranial Aneurysms. Brain Sci 2023; 13:1660. [PMID: 38137108 PMCID: PMC10871091 DOI: 10.3390/brainsci13121660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
The pathophysiology of intracranial aneurysms (IA) has been proven to be closely linked to hemodynamic stress and inflammatory pathways, most notably the NF-kB pathway. Therefore, it is a potential target for therapeutic intervention. In the present review, we investigated alterations in the vascular smooth muscle cells (VSMCs), extracellular matrix, and endothelial cells by the mediators implicated in the NF-kB pathway that lead to the formation, growth, and rupture of IAs. We also present an overview of the NF-kB pathway, focusing on stimuli and transcriptional targets specific to IAs, as well as a summary of the current strategies for inhibiting NF-kB activation in IAs. Our report adds to previously reported data and future research directions for treating IAs using compounds that can suppress inflammation in the vascular wall.
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Affiliation(s)
- Laurentiu Andrei Blaj
- Department of Neurosurgery, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.A.B.); (M.D.T.)
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Andrei Ionut Cucu
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
- Faculty of Medicine and Biological Sciences, University Stefan cel Mare of Suceava, 720229 Suceava, Romania
| | - Bogdan Ionel Tamba
- Advanced Research and Development Center for Experimental Medicine (CEMEX), “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania;
- Department of Pharmacology, Clinical Pharmacology and Algesiology, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Mihaela Dana Turliuc
- Department of Neurosurgery, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.A.B.); (M.D.T.)
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
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2
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Honda T, Inagawa H. Utility of In Vitro Cellular Models of Low-Dose Lipopolysaccharide in Elucidating the Mechanisms of Anti-Inflammatory and Wound-Healing-Promoting Effects of Lipopolysaccharide Administration In Vivo. Int J Mol Sci 2023; 24:14387. [PMID: 37762690 PMCID: PMC10532185 DOI: 10.3390/ijms241814387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/09/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Lipopolysaccharide (LPS) is a bacterial component that activates intracellular signaling pathways upon binding to the Toll-like receptor (TLR)-4/MD-2 complex. It is well known that LPS injected into animals and high-dose (100 ng/mL to 1 μg/mL) LPS treatment to innate immune cells induce an inflammatory response. In contrast, LPS is naturally present in the gastrointestinal tract, respiratory tract, and skin of humans and animals, and it has been shown that TLR-4-deficient animals cannot maintain their immune balance and gut homeostasis. LPS from commensal bacteria can help maintain homeostasis against mucosal stimulation in healthy individuals. Oral LPS administration has been shown to be effective in preventing allergic and lifestyle-related diseases. However, this effect was not observed after treatment with LPS at high doses. In mice, oral LPS administration resulted in the detection of LPS at a low concentration in the peritoneal fluid. Therefore, LPS administered at low and high doses have different effects. Moreover, the results of in vitro experiments using low-dose LPS may reflect the effects of oral LPS administration. This review summarizes the utility of in vitro models using cells stimulated with LPS at low concentrations (50 pg/mL to 50 ng/mL) in elucidating the mechanisms of oral LPS administration. Low-dose LPS administration has been demonstrated to suppress the upregulation of proinflammatory cytokines and promote wound healing, suggesting that LPS is a potential agent that can be used for the treatment and prevention of lifestyle-related diseases.
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Affiliation(s)
- Teruko Honda
- Department of Medical Technology, School of Life and Environmental Science, Azabu University, Sagamihara 252-5201, Japan
| | - Hiroyuki Inagawa
- Research Institute for Healthy Living, Niigata University of Pharmacy and Applied Life Sciences, Niigata 956-0841, Japan;
- Control of Innate Immunity, Collaborative Innovation Partnership, Takamatsu 761-0301, Japan
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3
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Song M, Chen Y. Local anaesthetic procaine derivatives protect rat against diabetic nephropathy via inhibition of DPP-4, inflammation and oxidative stress. Chem Biol Drug Des 2023; 102:26-37. [PMID: 37076428 DOI: 10.1111/cbdd.14252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/16/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023]
Abstract
Diabetic nephropathy (DN) is a serious devastating disease. However, the current clinical options to treat DN are not adequate. Thus, in the present study, we intend to develop novel series of procaine-embedded thiazole-pyrazoles as protective agent against DN. The compounds were tested for inhibition of dipeptidyl peptidase (DPP)-4, -8, and - 9 enzyme subtypes, where they selectively and potently inhibit DPP-4 as compared to other subtypes. The top three ranked DPP-4 inhibitors (8i, 8e and 8k) were further screened for inhibitory activity against NF-ĸB transcription. Among these three, compound 8i was identified as the most potent NF-ĸB inhibitor. The pharmacological benefit of compound 8i was further established in streptozotocin-induced diabetic nephropathy in rats. Compound 8i showed marked improvements in blood glucose, ALP, ALT, total protein, serum lipid profile such as total cholesterol, triglyceride, HDL levels and renal functions such as urine volume, urinary protein excretion, serum creatinine, blood urea nitrogen and creatinine clearance as compared to nontreated diabetic control group. It also reduces oxidative stress (MDA, SOD and GPx) and inflammation (TNF-α, IL-1β and IL-6) in the rats as compared to disease control group rats. This study demonstrated the discovery of procaine-embedded thiazole-pyrazole compounds as a novel class of agent against diabetic nephropathy.
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Affiliation(s)
- Miaomiao Song
- Department of Anesthesiology, Fengxian District Central Hospital, Shanghai, China
| | - Yaping Chen
- Department of Anesthesiology, Jinshan Hospital, Fudan University, Shanghai, China
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4
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Aktar S, Amin S. SARS-CoV-2 mediated dysregulation in cell signaling events drives the severity of COVID-19. Virus Res 2023; 323:198962. [PMID: 36209917 PMCID: PMC9536871 DOI: 10.1016/j.virusres.2022.198962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 10/03/2022] [Accepted: 10/05/2022] [Indexed: 01/25/2023]
Abstract
A balance in immune response against an unfamiliar pathogen is crucial to eliminate the infection. A cascade of cell signaling events is immediately activated upon sensing the presence of SARS-CoV-2 by cellular toll like receptors in a natural host response manner against the invading virus. The ultimate aim of such innate immune signaling pathways is to provide a required level of protection to our bodies by interfering with the invader. However, if there is any loss in such balance, an impairment in immune system emerge that fails to control the regulated transcription and translation of signaling components. Consequently, excessive level of proinflammatory mediators release into the circulatory systems that ultimately cause "cytokine storm" and COVID-19 pathological syndromes. The limited production of interferons (IFNs), while excessive yield of pro-inflammatory cytokines followed by SARS-CoV-2 infection suggests an abnormal cell signaling event and explains the reasons of increased immunopathology and severity in COVID-19.
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Affiliation(s)
- Salma Aktar
- Department of Microbiology, Noakhali Science and Technology University, Noakhali 3814, Bangladesh.
| | - Saiful Amin
- Chittagong Medical University, Chattogram, Bangladesh
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5
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Manni S, Fregnani A, Quotti Tubi L, Spinello Z, Carraro M, Scapinello G, Visentin A, Barilà G, Pizzi M, Dei Tos AP, Vianello F, Zambello R, Gurrieri C, Semenzato G, Trentin L, Piazza F. Protein Kinase CK1α Sustains B-Cell Receptor Signaling in Mantle Cell Lymphoma. Front Oncol 2021; 11:733848. [PMID: 34722279 PMCID: PMC8551451 DOI: 10.3389/fonc.2021.733848] [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: 06/30/2021] [Accepted: 09/06/2021] [Indexed: 12/25/2022] Open
Abstract
Mantle Cell Lymphoma (MCL) is still an incurable B-cell malignancy characterized by poor prognosis and frequent relapses. B Cell Receptor (BCR) signaling inhibitors, in particular of the kinases BTK and PI3Kγ/δ, have demonstrated clinically meaningful anti-proliferative effects in B cell tumors. However, refractoriness to these drugs may develop, portending a dismal prognosis. Protein kinase CK1α is an emerging pro-growth enzyme in B cell malignancies. In multiple myeloma, this kinase sustains β-catenin and AKT-dependent survival and is involved in the activation of NF-κB in B cells. In this study, we analyzed the role of CK1α on MCL cell survival and proliferation, on the regulation of BCR-related BTK, NF-κB, PI3K/AKT signaling cascades and the effects of CK1α chemical inhibition or gene silencing in association with the BTK inhibitor Ibrutinib or the PI3Kγ/δ inhibitor Duvelisib. CK1α was found highly expressed in MCL cells as compared to normal B cells. The inactivation/loss of CK1α caused MCL cell apoptosis and proliferation arrest. CK1α sustained BCR signaling, in particular the NF-κB, AKT and BTK pathways by modulating the phosphorylation of Ser 652 on CARD11, Ser 536 p65 on NF-κB, Ser 473 on AKT, Tyr 223 on BTK, as well as the protein levels. We also provided evidence that CK1α-mediated regulation of CARD11 and BTK likely implicates a physical interaction. The combination of CK1α inhibition with Ibrutinib or Duvelisib synergistically increased cytotoxicity, leading to a further decrease of the activation of BCR signaling pathways. Therefore, CK1α sustains MCL growth through the regulation of BCR-linked survival signaling cascades and protects from Ibrutinib/Duvelisib-induced apoptosis. Thus, CK1α could be considered as a rational molecular target for the treatment of MCL, in association with novel agents.
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Affiliation(s)
- Sabrina Manni
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Anna Fregnani
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Laura Quotti Tubi
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Zaira Spinello
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Marco Carraro
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Greta Scapinello
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Andrea Visentin
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Gregorio Barilà
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Marco Pizzi
- Department of Medicine-DIMED, Surgical Pathology and Cytopathology Unit, University of Padova, Padova, Italy
| | - Angelo Paolo Dei Tos
- Department of Medicine-DIMED, Surgical Pathology and Cytopathology Unit, University of Padova, Padova, Italy
| | - Fabrizio Vianello
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy
| | - Renato Zambello
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Carmela Gurrieri
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Gianpietro Semenzato
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Livio Trentin
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
| | - Francesco Piazza
- Department of Medicine-DIMED, Hematology and Clinical Immunology Section, University of Padova, Padova, Italy.,Laboratory of Myeloma and Lymphoma Pathobiology, Veneto Institute of Molecular Medicine, Padova, Italy
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Chandrasekaran VRM, Periasamy S, Chien SP, Tseng CH, Tsai PJ, Liu MY. Physical and psychological stress along with candle fumes induced-cardiopulmonary injury mimicking restaurant kitchen workers. Curr Res Toxicol 2021; 2:246-253. [PMID: 34345867 PMCID: PMC8320639 DOI: 10.1016/j.crtox.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/04/2021] [Accepted: 07/08/2021] [Indexed: 11/29/2022] Open
Abstract
Restaurant kitchens are work areas where involve strict and hierarchal environments that promote opportunity for bullying and workplace aggression and violence. These physical and psychological stress and fumes ultimately trigger severe occupational stress by disrupting the body's homeostasis that might induce cardiopulmonary injury. The study aimed to investigate the physical and psychological stress and candle fumes on cardiopulmonary injury in an animal model mimicking a restaurant kitchen worker. Social disruption stress (SDR) mice were exposed to scented candle fumes (4.5 h/d, 5 d/wk) in an exposure chamber for 8 weeks. Exposure to burning scented candles failed to reduce serum corticosterone level and increased proinflammatory cytokines levels and NF-ƙB activity in the lung. In addition, burning scented candle fumes synergistically increased SDR-induced serum LDH, CPK, CKMB levels, proinflammatory cytokines production as well as NF-ƙB activation in the lung and heart. Further, cardiac HIF-1α and BNP levels were also increased. We conclude that the physical and psychological stress along with candle fumes might induce cardiopulmonary injury in mice. These results could be extrapolated to restaurant kitchen workers.
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Affiliation(s)
- Victor Raj Mohan Chandrasekaran
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Srinivasan Periasamy
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Se-Ping Chien
- Department of Food and Beverage Services, Tainan University of Technology, Tainan 71002, Taiwan
| | - Chu-Han Tseng
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Perng-Jy Tsai
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Ming-Yie Liu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
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Harikrishnan R, Devi G, Van Doan H, Balasundaram C, Thamizharasan S, Hoseinifar SH, Abdel-Tawwab M. Effect of diet enriched with Agaricus bisporus polysaccharides (ABPs) on antioxidant property, innate-adaptive immune response and pro-anti inflammatory genes expression in Ctenopharyngodon idella against Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2021; 114:238-252. [PMID: 33989765 DOI: 10.1016/j.fsi.2021.04.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
The effect of Agaricus bisporus polysaccharides (ABPs) supplemented diet on growth rate, antioxidant capacity, innate-adaptive immune response, proinflammatory and antiinflammatory genes expression in Ctenopharyngodon idella against Aeromonas hydrophila is reported. In both normal and challenged groups fed with 1.0 and 1.5 mg kg-1 ABPs diets resulted in a significant weight gain and feed intake. The survival was 100% in normal fish fed without or with any ABPs diet; the challenged fish fed with 1.0 mg kg-1 ABPs diet had 98.6% survival. The RBC and WBC counts, Hb, and Hct levels were significant in both normal and challenged groups fed with 1.0 and 1.5 mg kg-1 ABPs diets. A significant increase in total protein and albumin level was observed in both groups fed with 1.0 and 1.5 mg kg-1 ABPs diets. Significant increase in GPx, ROS, GR, GSH, PC, and MnSOD activity was observed in HK of both groups fed with 1.0 and 1.5 mg kg-1 ABPs diets; similarly both groups when fed with the same ABPs diets showed significant Lz, C3, and C4 activity. However, both groups fed with 1.0 mg kg-1 ABPs diet showed significant β-defensin, LEAP-2A, IL-6, and NF-κB P65 mRNA expression. Similarly, IFN-γ2, IL-10, and TNFα mRNA expressions were significant in both groups fed with 1.0 mg kg-1 ABPs diet. The results indicate that both normal and challenged C. idella fed with a 1.0 mg kg-1 ABPs diet had better growth, antioxidant status, immune response, and pro-anti-inflammatory gene modulation against A. hydrophila.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram 631 501, Tamil Nadu, India
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai 50200, Thailand.
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | - Subramanian Thamizharasan
- Department of Biotechnology, Bharath College of Science and Management, Thanjavur, 613-005, Tamil Nadu, India
| | - Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mohsen Abdel-Tawwab
- Department of Fish Biology and Ecology, Central Laboratory for Aquaculture Research, Abbassa, Abo-Hammad, Sharqia, Egypt
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Millen S, Meretuk L, Göttlicher T, Schmitt S, Fleckenstein B, Thoma-Kress AK. A novel positive feedback-loop between the HTLV-1 oncoprotein Tax and NF-κB activity in T-cells. Retrovirology 2020; 17:30. [PMID: 32912211 PMCID: PMC7488018 DOI: 10.1186/s12977-020-00538-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/28/2020] [Indexed: 12/30/2022] Open
Abstract
Background Human T-cell leukemia virus type 1 (HTLV-1) infects primarily CD4+ T-lymphocytes and evoques severe diseases, predominantly Adult T-Cell Leukemia/ Lymphoma (ATL/L) and HTLV-1-associated Myelopathy/ Tropical Spastic Paraparesis (HAM/TSP). The viral transactivator of the pX region (Tax) is important for initiating malignant transformation, and deregulation of the major signaling pathway nuclear factor of kappa B (NF-κB) by Tax represents a hallmark of HTLV-1 driven cancer. Results Here we found that Tax mutants which are defective in NF-κB signaling showed diminished protein expression levels compared to Tax wildtype in T-cells, whereas Tax transcript levels were comparable. Strikingly, constant activation of NF-κB signaling by the constitutive active mutant of inhibitor of kappa B kinase (IKK2, IKK-β), IKK2-EE, rescued protein expression of the NF-κB defective Tax mutants M22 and K1-10R and even increased protein levels of Tax wildtype in various T-cell lines while Tax transcript levels were only slightly affected. Using several Tax expression constructs, an increase of Tax protein occurred independent of Tax transcripts and independent of the promoter used. Further, Tax and M22 protein expression were strongly enhanced by 12-O-Tetradecanoylphorbol-13-Acetate [TPA; Phorbol 12-myristate 13-acetate (PMA)]/ ionomycin, inducers of NF-κB and cytokine signaling, but not by tumor necrosis factor alpha (TNF-α). On the other hand, co-expression of Tax with a dominant negative inhibitor of κB, IκBα-DN, or specific inhibition of IKK2 by the compound ACHP, led to a vast decrease in Tax protein levels to some extent independent of Tax transcripts in transiently transfected and Tax-transformed T-cells. Cycloheximide chase experiments revealed that co-expression of IKK2-EE prolongs the half-life of M22, and constant repression of NF-κB signaling by IκBα-DN strongly reduces protein stability of Tax wildtype suggesting that NF-κB activity is required for Tax protein stability. Finally, protein expression of Tax and M22 could be recovered by NH4Cl and PYR-41, inhibitors of the lysosome and the ubiquitin-activating enzyme E1, respectively. Conclusions Together, these findings suggest that Tax’s capability to induce NF-κB is critical for protein expression and stabilization of Tax itself. Overall, identification of this novel positive feedback loop between Tax and NF-κB in T-cells improves our understanding of Tax-driven transformation.
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Affiliation(s)
- Sebastian Millen
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lina Meretuk
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Tim Göttlicher
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sarah Schmitt
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Bernhard Fleckenstein
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Andrea K Thoma-Kress
- Institute of Clinical and Molecular Virology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
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Sakowicz A, Bralewska M, Pietrucha T, Habrowska-Górczyńska DE, Piastowska-Ciesielska AW, Gach A, Rybak-Krzyszkowska M, Witas PJ, Huras H, Grzesiak M, Biesiada L. Canonical, Non-Canonical and Atypical Pathways of Nuclear Factor кb Activation in Preeclampsia. Int J Mol Sci 2020; 21:E5574. [PMID: 32759710 PMCID: PMC7432517 DOI: 10.3390/ijms21155574] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 01/31/2023] Open
Abstract
Although higher nuclear factor κB (NFκB) expression and activity is observed in preeclamptic placentas, its mechanism of activation is unknown. This is the first study to investigate whether the canonical, non-canonical, or atypical NFκB activation pathways may be responsible for the higher activation of NFκB observed in preeclamptic placentas. The study included 268 cases (130 preeclamptic women and 138 controls). We studied the expression of the genes coding for NFκB activators (NIK, IKKα, IKKβ, and CK2α) and inhibitors (IκBα and IκBβ) using RT-PCR in real time. The RT-PCR results were verified on the protein level using ELISA and Western blot. To determine the efficiency of the pathways, the ratios of activator(s) to one of the inhibitors (IκBα or IκBβ) were calculated for each studied pathway. The preeclamptic placentas demonstrated significantly lower IKKα and CK2α but higher IκBα and IκBβ protein levels. In addition, the calculated activator(s) to inhibitor (IκBα or IκBβ) ratios suggested that all studied pathways might be downregulated in preeclamptic placentas. Our results indicate that preeclamptic placentas may demonstrate mechanisms of NFκB activation other than the canonical, non-canonical, and atypical forms. In these mechanisms, inhibitors of NFκB may play a key role. These observations broaden the existing knowledge regarding the molecular background of preeclampsia development.
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Affiliation(s)
- Agata Sakowicz
- Medical University of Lodz, Department of Medical Biotechnology, 90-752 Lodz, Poland; (M.B.); (T.P.)
| | - Michalina Bralewska
- Medical University of Lodz, Department of Medical Biotechnology, 90-752 Lodz, Poland; (M.B.); (T.P.)
| | - Tadeusz Pietrucha
- Medical University of Lodz, Department of Medical Biotechnology, 90-752 Lodz, Poland; (M.B.); (T.P.)
| | | | | | - Agnieszka Gach
- Department of Genetics, Polish Mother’s Memorial Hospital-Research Institute in Lodz, 93-338 Lodz, Poland;
| | - Magda Rybak-Krzyszkowska
- Department of Obstetrics and Perinatology, University Hospital in Krakow, 31-501 Krakow, Poland; (M.R.-K.); (H.H.)
| | - Piotr J Witas
- Medical University of Lodz, Department of Haemostatic Disorders, 92-215 Lodz, Poland;
| | - Hubert Huras
- Department of Obstetrics and Perinatology, University Hospital in Krakow, 31-501 Krakow, Poland; (M.R.-K.); (H.H.)
| | - Mariusz Grzesiak
- Department of Perinatology, Obstetrics and Gynecology, Polish Mother’s Memorial Hospital-Research Institute in Lodz, 93-338 Lodz, Poland;
- Medical University of Lodz, Department of Obstetrics and Gynecology, 93-338 Lodz, Poland
| | - Lidia Biesiada
- Department of Obstetrics and Gynecology, Polish Mother’s Memorial Hospital-Research Institute, 93-338 Lodz, Poland;
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10
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Interleukin-1β and TNF-α systems in ovarian follicles and their roles during follicular development, oocyte maturation and ovulation. ZYGOTE 2020; 28:270-277. [PMID: 32383419 DOI: 10.1017/s0967199420000222] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Tumour necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) are cytokines that are involved in the development, proliferation and apoptosis of ovarian follicular cells in domestic mammals. The expression of these cytokines in various follicular compartments, depending on the stage of follicle development, demonstrates their involvement in the control of primordial follicle growth up to the preovulatory stage. The mechanism of action of these factors depends on the presence of their receptors that transduce their biological actions. This review shows the expression sites of TNF-α, IL-1β and their receptors in ovarian follicles, and discusses the mechanism of action of these cytokines during follicle development, oocyte maturation and ovulation in domestic animals.
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Paramylon, a Potent Immunomodulator from WZSL Mutant of Euglena gracilis. Molecules 2019; 24:molecules24173114. [PMID: 31461965 PMCID: PMC6749516 DOI: 10.3390/molecules24173114] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/08/2019] [Accepted: 08/23/2019] [Indexed: 02/06/2023] Open
Abstract
β-glucans, heterogeneous glucose polymers present in many organisms, have the capability to activate the innate immune system. Efficacy of activation depends on purity of the compound, molecular structure, polymerization degree, and source. One of the purest forms of crystallized β-(1–3)-glucan present in nature is the paramylon extracted from the WZSL non-chloroplastic mutant of Euglena gracilis, which can be processed to produce linear nanofibers capable of interacting with specific receptors present on cell membranes. The effects of these nanofibers, already investigated on plants, animals, and humans, will be analyzed.
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12
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Yeo D, Kang C, Zhang T, Ji LL. Avenanthramides attenuate inflammation and atrophy in muscle cells. JOURNAL OF SPORT AND HEALTH SCIENCE 2019; 8:189-195. [PMID: 30997266 PMCID: PMC6451048 DOI: 10.1016/j.jshs.2018.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 05/15/2023]
Abstract
BACKGROUND Chronic inflammation is an important etiologic mechanism for muscle atrophy. Oat-derived phytochemical avenanthramides (AVAs) have been shown to suppress inflammatory responses in human clinical studies and in several cell lines in vitro, but their role in skeletal muscle is unclear. The aim of this study was to investigate whether AVA treatment can prevent tumor necrosis factor (TNF)-α-induced muscle fiber atrophy in C2C12 cells. METHODS We treated 70% confluent cells for 24 h with AVA. Then, TNF-α was added to cell-cultured medium. Subsequently, cells were harvested at different time points. The cells were examined using various biochemical techniques for measuring protein, messenger RNA levels, nuclear binding activity, and viability. Fluorescence microscope was used for analysis of the myotube morphology. RESULTS Cells treated with TNF-α significantly increased nuclear factor κB activation, indicated by a marked decrease of IκB (p < 0.05) and a 6.6-fold increase in p65-DNA binding (p < 0.01); however, 30 μmol of AVA-A, -B, and -C treatment reduced the binding by 33%, 18%, and 19% (p < 0.01), respectively, compared with cells treated with TNF-α without AVA. The interleukin-6 level increased by 2.5 fold (p < 0.01) with TNF-α, but decreased by 24%, 32%, and 28% (p < 0.01), respectively, with AVA-A, -B, and -C. The interleukin-1β level also showed a 47% increase with TNF-α (p < 0.01), whereas this increment was abolished in all AVA-treated cells. Reactive oxygen species production was 1.3-fold higher in the TNF-α-treated group (p < 0.01) but not in the TNF-α + AVAs groups. Messenger RNA levels of muscle-specific E3 ubiquitin ligase atrogin-1 increased 23% in TNF-α vs. control (p < 0.05) but was decreased by 46%, 34%, and 53% (p < 0.01), respectively, with treatment of AVA-A, -B, and -C. Moreover, TNF-α treatment increased the muscle RING finger 1 messenger RNA level by 76% (p < 0.01); this change was abolished by AVAs. Cells treated with TNF-α demonstrated a reduced proliferation compared with control cells (p < 0.01), but this effect was not seen in TNF-α + AVAs cells. The diameter of the C2C12 myotube decreased by 28% (p < 0.01) with TNF-α, whereas it showed no change when AVAs were included in the cell media. CONCLUSION These results indicated that AVAs can reduce proinflammatory cytokine and reactive oxygen species production and ameliorate TNF-α-induced myotube atrophy in muscle cells.
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Affiliation(s)
- Dongwook Yeo
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota-Twin Cities, Minneapolis, MN 55455, USA
| | - Chounghun Kang
- The Department of Physical Education, Inha University, Incheon 22212, South Korea
| | - Tianou Zhang
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota-Twin Cities, Minneapolis, MN 55455, USA
| | - Li Li Ji
- Laboratory of Physiological Hygiene and Exercise Science, School of Kinesiology, University of Minnesota-Twin Cities, Minneapolis, MN 55455, USA
- Corresponding author.
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Ratajczak-Wrona W, Jablonska E. The Signaling Pathways in Nitric Oxide Production by Neutrophils Exposed to N-nitrosodimethylamine. LETT DRUG DES DISCOV 2018. [DOI: 10.2174/1570180815666180426121503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background:
Polymorphonuclear neutrophils (PMNs) play a crucial role in the innate
immune system’s response to microbial pathogens through the release of reactive nitrogen species,
including Nitric Oxide (NO).
</P><P>
Methods: In neutrophils, NO is produced by the inducible Nitric Oxide Synthase (iNOS), which is
regulated by various signaling pathways and transcription factors. N-nitrosodimethylamine
(NDMA), a potential human carcinogen, affects immune cells. NDMA plays a major part in the
growing incidence of cancers. Thanks to the increasing knowledge on the toxicological role of
NDMA, the environmental factors that condition the exposure to this compound, especially its precursors-
nitrates arouse wide concern.
Results:
In this article, we present a detailed summary of the molecular mechanisms of NDMA’s
effect on the iNOS-dependent NO production in human neutrophils.
Conclusion:
This research contributes to a more complete understanding of the mechanisms that
explain the changes that occur during nonspecific cellular responses to NDMA toxicity.
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Affiliation(s)
- Wioletta Ratajczak-Wrona
- Department of Immunology Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
| | - Ewa Jablonska
- Department of Immunology Medical University of Bialystok, Waszyngtona 15A, 15-269 Bialystok, Poland
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Szołtysek K, Janus P, Zając G, Stokowy T, Walaszczyk A, Widłak W, Wojtaś B, Gielniewski B, Cockell S, Perkins ND, Kimmel M, Widlak P. RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation. BMC Genomics 2018; 19:813. [PMID: 30419821 PMCID: PMC6233266 DOI: 10.1186/s12864-018-5211-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 10/30/2018] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND The cellular response to ionizing radiation involves activation of p53-dependent pathways and activation of the atypical NF-κB pathway. The crosstalk between these two transcriptional networks include (co)regulation of common gene targets. Here we looked for novel genes potentially (co)regulated by p53 and NF-κB using integrative genomics screening in human osteosarcoma U2-OS cells irradiated with a high dose (4 and 10 Gy). Radiation-induced expression in cells with silenced TP53 or RELA (coding the p65 NF-κB subunit) genes was analyzed by RNA-Seq while radiation-enhanced binding of p53 and RelA in putative regulatory regions was analyzed by ChIP-Seq, then selected candidates were validated by qPCR. RESULTS We identified a subset of radiation-modulated genes whose expression was affected by silencing of both TP53 and RELA, and a subset of radiation-upregulated genes where radiation stimulated binding of both p53 and RelA. For three genes, namely IL4I1, SERPINE1, and CDKN1A, an antagonistic effect of the TP53 and RELA silencing was consistent with radiation-enhanced binding of both p53 and RelA. This suggested the possibility of a direct antagonistic (co)regulation by both factors: activation by NF-κB and inhibition by p53 of IL4I1, and activation by p53 and inhibition by NF-κB of CDKN1A and SERPINE1. On the other hand, radiation-enhanced binding of both p53 and RelA was observed in a putative regulatory region of the RRAD gene whose expression was downregulated both by TP53 and RELA silencing, which suggested a possibility of direct (co)activation by both factors. CONCLUSIONS Four new candidates for genes directly co-regulated by NF-κB and p53 were revealed.
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Affiliation(s)
- Katarzyna Szołtysek
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Patryk Janus
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Gracjana Zając
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Tomasz Stokowy
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Anna Walaszczyk
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Wiesława Widłak
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Bartosz Wojtaś
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
| | | | - Simon Cockell
- Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Neil D. Perkins
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle, UK
| | | | - Piotr Widlak
- Maria Skłodowska-Curie Institute – Oncology Center, Gliwice Branch, Gliwice, Poland
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15
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Janus P, Szołtysek K, Zając G, Stokowy T, Walaszczyk A, Widłak W, Wojtaś B, Gielniewski B, Iwanaszko M, Braun R, Cockell S, Perkins ND, Kimmel M, Widlak P. Pro-inflammatory cytokine and high doses of ionizing radiation have similar effects on the expression of NF-kappaB-dependent genes. Cell Signal 2018; 46:23-31. [PMID: 29476964 DOI: 10.1016/j.cellsig.2018.02.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/19/2018] [Accepted: 02/20/2018] [Indexed: 12/22/2022]
Abstract
The NF-κB transcription factors are activated via diverse molecular mechanisms in response to various types of stimuli. A plethora of functions associated with specific sets of target genes could be regulated differentially by this factor, affecting cellular response to stress including an anticancer treatment. Here we aimed to compare subsets of NF-κB-dependent genes induced in cells stimulated with a pro-inflammatory cytokine and in cells damaged by a high dose of ionizing radiation (4 and 10 Gy). The RelA-containing NF-κB species were activated by the canonical TNFα-induced and the atypical radiation-induced pathways in human osteosarcoma cells. NF-κB-dependent genes were identified using the gene expression profiling (by RNA-Seq) in cells with downregulated RELA combined with the global profiling of RelA binding sites (by ChIP-Seq), with subsequent validation of selected candidates by quantitative PCR. There were 37 NF-κB-dependent protein-coding genes identified: in all cases RelA bound in their regulatory regions upon activation while downregulation of RELA suppressed their stimulus-induced upregulation, which apparently indicated the positive regulation mode. This set of genes included a few "novel" NF-κB-dependent species. Moreover, the evidence for possible negative regulation of ATF3 gene by NF-κB was collected. The kinetics of the NF-κB activation was slower in cells exposed to radiation than in cytokine-stimulated ones. However, subsets of NF-κB-dependent genes upregulated by both types of stimuli were essentially the same. Hence, one should expect that similar cellular processes resulting from activation of the NF-κB pathway could be induced in cells responding to pro-inflammatory cytokines and in cells where so-called "sterile inflammation" response was initiated by radiation-induced damage.
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Affiliation(s)
- Patryk Janus
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Katarzyna Szołtysek
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Gracjana Zając
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Tomasz Stokowy
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Anna Walaszczyk
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Wiesława Widłak
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Bartosz Wojtaś
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
| | | | - Marta Iwanaszko
- Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Rosemary Braun
- Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Simon Cockell
- Faculty of Medical Sciences, Newcastle University, Newcastle, UK
| | - Neil D Perkins
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle, UK
| | | | - Piotr Widlak
- Maria Skłodowska-Curie Institute, Oncology Center, Gliwice Branch, Gliwice, Poland.
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16
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Hop HT, Reyes AWB, Huy TXN, Arayan LT, Min W, Lee HJ, Rhee MH, Chang HH, Kim S. Activation of NF- kB-Mediated TNF-Induced Antimicrobial Immunity Is Required for the Efficient Brucella abortus Clearance in RAW 264.7 Cells. Front Cell Infect Microbiol 2017; 7:437. [PMID: 29062811 PMCID: PMC5640714 DOI: 10.3389/fcimb.2017.00437] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 09/25/2017] [Indexed: 11/19/2022] Open
Abstract
In this study, we explore the regulatory roles of pro-inflammatory cytokine tumor necrosis factor alpha (TNF) in the innate immunity of macrophages against B. abortus infection. We show that infection of macrophage with B. abortus induces marked expression and secretion of TNF which subsequently binds to TNF receptor 1 (TNFR-1) and activates a downstream signaling cascade of the innate immunity. Blocking of TNF signaling resulted in a notable increase of B. abortus survival which was associated with an increase of anti-inflammatory cytokine interleukin 10 (IL-10), a beneficial effector of Brucella survival, as well as remarkable decrease of reactive oxygen species (ROS) and nitric oxide (NO), antibrucella molecules. However, surprisingly, the interference of TNF did not show any influence on phagolysosome and cell death events. Furthermore, the transcriptional factor NF-kB was found to be a main mediator of TNF signaling when blocking of NF-kB pathway drastically suppressed the TNF-induced brucellacidal effect. Taken together, these findings clearly indicate that the immune cascade activated by TNF/TNFR-1 is required for the sufficient resistance to B. abortus survival in macrophages.
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Affiliation(s)
- Huynh T Hop
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Alisha W B Reyes
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Tran X N Huy
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Lauren T Arayan
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - WonGi Min
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Hu J Lee
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Man H Rhee
- College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Hong H Chang
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
| | - Suk Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea.,Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
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17
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Jiang WD, Xu J, Zhou XQ, Wu P, Liu Y, Jiang J, Kuang SY, Tang L, Tang WN, Zhang YA, Feng L. Dietary protein levels regulated antibacterial activity, inflammatory response and structural integrity in the head kidney, spleen and skin of grass carp (Ctenopharyngodon idella) after challenged with Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2017; 68:154-172. [PMID: 28698127 DOI: 10.1016/j.fsi.2017.07.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/02/2017] [Accepted: 07/08/2017] [Indexed: 06/07/2023]
Abstract
This study investigated the effects of dietary protein levels on disease resistance, immune function and structural integrity in the head kidney, spleen and skin of grass carp (Ctenopharyngodon idella). A total of 540 grass carp (264.11 ± 0.76 g) were fed six diets containing graded levels of protein (143.1, 176.7, 217.2, 257.5, 292.2 and 322.8 g digestible protein kg-1 diet) for 8 weeks. After the growth trial, fish were challenged with Aeromonas hydrophila for 14 days. The results indicated that optimal levels of dietary protein: (1) (1) increased the lysozyme (LA) and acid phosphatase (ACP) activities and the complement 3 (C3) and C4 contents, up-regulated antimicrobial peptides, anti-inflammatory cytokines, inhibitor of κBα, target of rapamycin and ribosomal protein S6 kinases 1 mRNA levels, whereas down-regulated pro-inflammatory cytokines, nuclear factor kappa B (NF-κB) P65, IKKβ, IKKγ, eIF4E-binding proteins (4E-BP) 1 and 4E-BP2 mRNA levels in the head kidney, spleen and skin of grass carp (P < 0.05), suggesting that optimal level of dietary protein could enhance immune function in the head kidney, spleen and skin of fish; (2) increased the activities and mRNA levels of antioxidant enzymes, enhanced the glutathione content, decreased reactive oxygen species, malondialdehyde (MDA) and protein carbonyl contents, and up-regulated the mRNA levels of NF-E2-related factor 2, B-cell lymphoma protein-2, inhibitor of apoptosis proteins, myeloid cell leukemia-1 and tight junction complexes, whereas down-regulated Kelch-like-ECH-associated protein (Keap) 1b, cysteinyl aspartic acid-protease 3, 8, 9, Fas ligand, apoptotic protease activating factor-1, Bcl-2 associated X protein and myosin light chain kinase mRNA levels in the head kidney, spleen and skin of grass carp (P < 0.05), indicating that optimal level of dietary protein could improve structural integrity in the head kidney, spleen and skin of fish. Finally, based on the skin hemorrhage and lesion morbidity, LA activity and MDA content, the optimal levels of dietary protein for grass carp (264 g-787 g) were estimated to be 241.45 g kg-1 diet (217.68 g digestible protein kg-1 diet), 301.68 g kg-1 diet (265.48 g digestible protein kg-1 diet) and 307.84 g kg-1 diet (272.71 g digestible protein kg-1 diet), respectively.
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Affiliation(s)
- Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Jing Xu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Wu-Neng Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Sichuan, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu 611130, China.
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18
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A small-molecule inhibitor targeting the AURKC-IκBα interaction decreases transformed growth of MDA-MB-231 breast cancer cells. Oncotarget 2017; 8:69691-69708. [PMID: 29050234 PMCID: PMC5642509 DOI: 10.18632/oncotarget.18883] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 06/05/2017] [Indexed: 12/02/2022] Open
Abstract
The Aurora kinases, Aurora A (AURKA), Aurora B (AURKB), and Aurora C (AURKC), are serine/threonine kinases required for the control of mitosis (AURKA and AURKB) or meiosis (AURKC). Several Aurora kinase inhibitors are being investigated as novel anticancer therapeutics. Recent studies demonstrated that AURKC activation contributes to breast cancer cell transformation. Therefore, AURKC is both a promising marker and therapeutic target for breast cancer; however, its signaling network has not been fully characterized. Using translocation-based cellular assays, we identified IκBα as a binding partner of AURKC, and found that AURKC phosphorylates IκBα at Ser32, thereby activating it. In silico modeling and computational analyses revealed a small-molecule inhibitor (AKCI) that blocked the AURKC–IκBα interaction and exerted antitumor activity in MDA-MB-231 breast cancer cells. Specifically, AKCI induced G2/M cell-cycle arrest through modulation of the p53/p21/CDC2/cyclin B1 pathways. In addition, the drug significantly inhibited MDA-MB-231 cell migration and invasion, as well as decreasing colony formation and tumor growth. Via its interaction with IκBα, AURKC indirectly induced NF-κB activation; accordingly, AKCI decreased PMA-induced activation of NF-κB. Thus, the small-molecule inhibitor AKCI represents a first step towards developing targeted inhibitors of AURKC protein binding, which may lead to further advances in the treatment of breast cancer.
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19
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Wang T, He R, Zhao J, Mei JC, Shao MZ, Pan Y, Zhang J, Wu HS, Yu M, Yan WC, Liu LM, Liu F, Jia WP. Negative pressure wound therapy inhibits inflammation and upregulates activating transcription factor-3 and downregulates nuclear factor-κB in diabetic patients with foot ulcerations. Diabetes Metab Res Rev 2017; 33. [PMID: 27883358 DOI: 10.1002/dmrr.2871] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 10/18/2016] [Accepted: 11/13/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Negative pressure wound therapy (NPWT) is one of the most important treatments for diabetic foot, but the underlying mechanisms of its benefits still remain elusive. This study aims to evaluate the inflammatory signals involved in the effects of negative pressure therapy on diabetic foot ulcers. METHODS We enrolled 22 patients with diabetic foot ulceration, 11 treated with NPWT and the other 11 treated with traditional debridement. All patients were treated and observed for 1 week. Granulation tissues were harvested and analyzed in both groups, and then were histologically and immunohistochemically analyzed. Enzyme-linked immunosorbent assay, Western blot analysis, and real-time PCR were performed to evaluate the expression of interleukin-6 (IL-6), tumor necrosis factor α (TNF-α), inducible nitric oxide synthase (iNOS), nuclear factor-κB (NF-κB) p65, Ik B-α, and activating transcription factor-3 (ATF-3). RESULTS After 7 days of treatment, NPWT could obviously promote diabetic wound healing because of the mild inflammation and the dense cell-deposited matrix. Meanwhile, NPWT significantly decreased the expression of TNF-α, IL-6, and iNOS (all P < .05). The result of Western blotting and real-time PCR indicated that NPWT obviously decreased the level of Ik B-α and NF-κB p65, and increased the level of ATF-3 (all P < .05). CONCLUSION NPWT exerts an anti-inflammatory effect, possibly through the suppression of proinflammatory enzymes and cytokines resulting from Ik B-α inhibition and ATF-3 activation, which may prevent the activation of the NF-κB pathway in human diabetic foot wounds.
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Affiliation(s)
- T Wang
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - R He
- Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Multidisciplinary Collaboration Group of Diabetic Foot, Shanghai Institute for Diabetes, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - J Zhao
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - J C Mei
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - M Z Shao
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - Y Pan
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - J Zhang
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - H S Wu
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - M Yu
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - W C Yan
- Department of Vascular Surgery, Shanghai Clinical Medical Center of Diabetes, Multidisciplinary Collaboration Center of Diabetic Foot, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital of Shanghai, Shanghai, China
| | - L M Liu
- Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Multidisciplinary Collaboration Group of Diabetic Foot, Shanghai Institute for Diabetes, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - F Liu
- Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Multidisciplinary Collaboration Group of Diabetic Foot, Shanghai Institute for Diabetes, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - W P Jia
- Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Multidisciplinary Collaboration Group of Diabetic Foot, Shanghai Institute for Diabetes, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai, China
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El Ouar I, Braicu C, Naimi D, Irimie A, Berindan-Neagoe I. Effect of Helix aspersa extract on TNFα, NF-κB and some tumor suppressor genes in breast cancer cell line Hs578T. Pharmacogn Mag 2017; 13:281-285. [PMID: 28539722 PMCID: PMC5421427 DOI: 10.4103/0973-1296.204618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/26/2015] [Indexed: 12/20/2022] Open
Abstract
Background: The garden snail, Helix aspersa, is a big land snail widely found in the Mediterranean countries. It is one of the most consumed species and widely used in zootherapy. Objective: The present study was carried out to investigate for the first time the first time the antitumor activity of an aqueous extract from Helix aspersa. Materials and Methods: The effect of H. aspersa extract was studied on a triple negative breast cancer cell line Hs578T. Firstly, the morphological changes and the mode of cell death induced by the extract have been evaluated by microscopy and acridine orange/ethidium bromide staining. The effect of the extract at dilution 0.1% and 1% was then tested on some genes, regulators of cell death and proliferation like tumor necrosis factor α (TNFα), NF- κB, and the tumor suppressor genes P53 and PTEN. Results: Data demonstrate that the extract induces necrosis in tumor cells. It enhances significantly the expression of TNFα; mRNA levels were 20 and 10 times more important in treated cells compared to nontreated cells. NF-κB and PTEN were inhibited with the dilution 1% after 8 and 24 hours of treatment. P53 expression was further inhibited but only with the highest dose, after 4, 8, and 24 hours. Conclusion: Our results show that H. aspersa extract has an antitumor activity against Hs578T cells; it is a potent stimulator for TNFα and a good inhibitor for NF-κB. Abbreviations used: AO: acridine orange; Bcl-2: B cell lymphoma 2. cDNA: complementary DNA; ELISA: enzyme linked immunosorbent assay; EB: ethidium bromide; IC50: the half maximal inhibitory concentration; mRNA: messenger RNA. MAPK: mitogen-activated protein kinase; NF-κB: nuclearfactorkappa B; PBS: phosphate buffered saline. PI3K: phospho-inositol 3 kinase; PTEN: phosphatase and tensin homolog; ROS: reactive oxygen species. RT-PCR: reverse transcription polymerase chain reaction; TNFα: tumor necrosis factor alpha. TNFR1: TNF receptor-1; TP53: tumor protein 53
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Affiliation(s)
- Ibtissem El Ouar
- Laboratory of Microbiological Engineering and Application, University Mentouri Constantine, Algeria
| | - Cornelia Braicu
- Department of Functional Genomics and Experimental Pathology, Cancer Institute "Ion Chiricuta", Cluj-Napoca.,Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dalila Naimi
- Laboratory of Microbiological Engineering and Application, University Mentouri Constantine, Algeria
| | - Alexendru Irimie
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Surgery, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca.,Department of Surgical Oncology, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Berindan-Neagoe
- Laboratory of Microbiological Engineering and Application, University Mentouri Constantine, Algeria.,Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Immunology, Iuliu Hatieganu. University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Szoltysek K, Walaszczyk A, Janus P, Kimmel M, Widlak P. Irradiation with UV-C inhibits TNF-α-dependent activation of the NF-κB pathway in a mechanism potentially mediated by reactive oxygen species. Genes Cells 2016; 22:45-58. [PMID: 27976481 DOI: 10.1111/gtc.12455] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 10/30/2016] [Indexed: 12/25/2022]
Abstract
Pathways depending on the NF-κB transcription factor are essential components of cellular response to stress. Plethora of stimuli modulating NF-κB includes inflammatory signals, ultraviolet radiation (UV) and reactive oxygen species (ROS), yet interference between different factors affecting NF-κB remains relatively understudied. Here, we aim to characterize the influence of UV radiation on TNF-α-induced activity of the NF-κB pathway. We document inhibition of TNF-α-induced activation of NF-κB and subsequent suppression of NF-κB-regulated genes in cells exposed to UV-C several hours before TNF-α stimulation. Accumulation of ROS and subsequent activation of NRF2, p53, AP-1 and NF-κB-dependent pathways, with downstream activation of antioxidant mechanisms (e.g., SOD2 and HMOX1 expression), is observed in the UV-treated cells. Moreover, NF-κB inhibition is not observed if generation of UV-induced ROS is suppressed by chemical antioxidants. It is noteworthy that stimulation with TNF-α also generates a wave of ROS, which is suppressed in cells pre-treated by UV. We postulate that irradiation with UV-C activates antioxidant mechanisms, which in turn affect ROS-mediated activation of NF-κB by TNF-α. Considering a potential cross talk between p53 and NF-κB, we additionally compare observed effects in p53-proficient and p53-deficient cells and find the UV-mediated suppression of TNF-α-activated NF-κB in both types of cells.
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Affiliation(s)
- Katarzyna Szoltysek
- Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Wybrzeze Armii Krajowej 15, Gliwice, Poland
| | - Anna Walaszczyk
- Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Wybrzeze Armii Krajowej 15, Gliwice, Poland
| | - Patryk Janus
- Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Wybrzeze Armii Krajowej 15, Gliwice, Poland.,Systems Engineering Group, Silesian University of Technology, Akademicka 16, Gliwice, Poland
| | - Marek Kimmel
- Systems Engineering Group, Silesian University of Technology, Akademicka 16, Gliwice, Poland.,Departments of Statistics and Bioengineering, Rice University, 6100 Main Street, Houston, TX, USA
| | - Piotr Widlak
- Maria Skłodowska-Curie Memorial Cancer Center and Institute of Oncology, Wybrzeze Armii Krajowej 15, Gliwice, Poland
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Purushotham G, Padma Y, Nabiha Y, Venkata Raju RR. In vitro evaluation of anti-proliferative, anti-inflammatory and pro-apoptotic activities of the methanolic extracts of Andrographis nallamalayana Ellis on A375 and B16F10 melanoma cell lines. 3 Biotech 2016; 6:212. [PMID: 28330284 PMCID: PMC5045834 DOI: 10.1007/s13205-016-0529-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 09/19/2016] [Indexed: 02/07/2023] Open
Abstract
Natural plant products have been widely used in controlling cancer with fewer or no side effects and the use of plant extracts as complementary to synthetic medicine is gaining increased popularity. Members of Andrographis plants possess important medicinal properties. In the present study, anti-cancerous properties of Andrographis nallamalayana (AN) were tested on A375 and B16F10 skin melanoma cancer cell lines. The leaf extracts of AN significantly reduced the cell viability and cell survival of skin cancer cell lines, achieved by MTT assay and clonogenic assays, respectively. Further, TUNEL assays revealed that AN extracts induces the apoptosis. Western blot analysis revealed that AN leaf extracts reduced the expression of Bcl-2, an anti-apoptotic protein and induced the expression of proapoptotic molecules such as Bcl-2 associated death promoter protein (BAD), Bcl-2 associated X protein (BAX) and cleaved caspase-3. Moreover, the qRT-PCR and western blot analysis demonstrated the reduced expression of G2/M phase proteins cdk1, cyclin B1 and increased expression of p53, cyclin-dependent kinase 1 inhibitor, p21. Further, immunofluorescence analysis revealed that AN reduced the NF-κB nuclear translocation, luciferase reporter assays demonstrated reporter gene activation. qRT-PCR assays showed that AN significantly reduced the expression of NF-κB target genes. The results concluded that the extracts of AN exhibited significant anti-proliferative, anti-inflammatory and pro-apoptotic activities on melanoma skin cancer cell lines.
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Mathematical Models for Immunology: Current State of the Art and Future Research Directions. Bull Math Biol 2016; 78:2091-2134. [PMID: 27714570 PMCID: PMC5069344 DOI: 10.1007/s11538-016-0214-9] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 09/26/2016] [Indexed: 01/01/2023]
Abstract
The advances in genetics and biochemistry that have taken place over the last 10 years led to significant advances in experimental and clinical immunology. In turn, this has led to the development of new mathematical models to investigate qualitatively and quantitatively various open questions in immunology. In this study we present a review of some research areas in mathematical immunology that evolved over the last 10 years. To this end, we take a step-by-step approach in discussing a range of models derived to study the dynamics of both the innate and immune responses at the molecular, cellular and tissue scales. To emphasise the use of mathematics in modelling in this area, we also review some of the mathematical tools used to investigate these models. Finally, we discuss some future trends in both experimental immunology and mathematical immunology for the upcoming years.
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Hsu CW, Li SC, Chang NY, Chen ZW, Liao JW, Chen TH, Wang JP, Lin JH, Hsuan SL. Involvement of NF-κB in regulation of Actinobacillus pleuropneumoniae exotoxin ApxI-induced proinflammatory cytokine production in porcine alveolar macrophages. Vet Microbiol 2016; 195:128-135. [PMID: 27771058 DOI: 10.1016/j.vetmic.2016.09.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/24/2016] [Accepted: 09/27/2016] [Indexed: 10/20/2022]
Abstract
Actinobacillus pleuropneumoniae is a crucial respiratory pathogen that causes fibrinous, hemorrhagic, necrotizing pleuropneumonia in pigs. A. pleuropneumoniae exotoxins (ApxI to IV) are the major virulence factors contributing to A. pleuropneumoniae pathogenesis. Previously, we demonstrated that ApxI induces the expression of proinflammatory cytokines in porcine alveolar macrophages (PAMs) via the mitogen-activated protein kinases (MAPKs) p38 and cJun NH2-terminal kinase (JNK). Nonetheless, the role of nuclear factor (NF)-κB-a transcription factor widely implicated in immune and inflammatory responses-in ApxI-elicited cytokine production has yet to be defined. In the present study, we examined the involvement of NF-κB in ApxI-elicited production of interleukin (IL)-1β, IL-8, and tumor necrosis factor (TNF)-α in PAMs and investigated the correlation between NF-κB and MAPK (p38 and JNK) pathways in this event. The results of Western blot analysis, confocal microscopy, and a DNA binding activity assay revealed that the classical NF-κB pathway was activated by ApxI, as evidenced by the decreased levels of IκB and subsequent NF-κB translocation and activation in ApxI-stimulated PAMs. Moreover, the blocking of ApxI-induced NF-κB activation significantly attenuated the levels of mRNA and protein secretion of IL-1β, IL-8, and TNF-α in PAMs. Notably, the attenuation of JNK activation by a specific inhibitor (SP600125) reduced ApxI-induced NF-κB activation, whereas a p38 blocker (SB203580) had no effect on the NF-κB pathway. Further examination revealed that the level of phosphorylation at serine 536 on the NF-κB p65 subunit was dependent on JNK activity. Collectively, this study, for the first time, demonstrates a pivotal role of NF-κB in ApxI-induced IL-1β, IL-8, and TNF-α production; JNK, but not p38, may positively affect the activation of the classical NF-κB pathway.
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Affiliation(s)
- Chiung-Wen Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC; Animal Technology Laboratories, Agricultural Technology Research Institute, No. 1, Ln. 51, Dahu Rd., Hsinchu City, 30093, Taiwan, ROC
| | - Siou-Cen Li
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC; Animal Technology Laboratories, Agricultural Technology Research Institute, No. 1, Ln. 51, Dahu Rd., Hsinchu City, 30093, Taiwan, ROC
| | - Nai-Yun Chang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC
| | - Zeng-Weng Chen
- Animal Technology Laboratories, Agricultural Technology Research Institute, No. 1, Ln. 51, Dahu Rd., Hsinchu City, 30093, Taiwan, ROC
| | - Jiunn-Wang Liao
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC
| | - Ter-Hsin Chen
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC
| | - Jyh-Perng Wang
- Animal Technology Laboratories, Agricultural Technology Research Institute, No. 1, Ln. 51, Dahu Rd., Hsinchu City, 30093, Taiwan, ROC
| | - Jiunn-Horng Lin
- Animal Technology Laboratories, Agricultural Technology Research Institute, No. 1, Ln. 51, Dahu Rd., Hsinchu City, 30093, Taiwan, ROC
| | - Shih-Ling Hsuan
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung, 40227, Taiwan, ROC.
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25
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Kim J, Lee JO, Paik JH, Lee WW, Kim SE, Song YS. Different predictive values of interim 18F-FDG PET/CT in germinal center like and non-germinal center like diffuse large B-cell lymphoma. Ann Nucl Med 2016; 31:1-11. [DOI: 10.1007/s12149-016-1123-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/05/2016] [Indexed: 12/11/2022]
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26
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Urban BC, Collard TJ, Eagle CJ, Southern SL, Greenhough A, Hamdollah-Zadeh M, Ghosh A, Poulsom R, Paraskeva C, Silver A, Williams AC. BCL-3 expression promotes colorectal tumorigenesis through activation of AKT signalling. Gut 2016; 65:1151-64. [PMID: 26033966 PMCID: PMC4941180 DOI: 10.1136/gutjnl-2014-308270] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 03/21/2015] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Colorectal cancer remains the fourth most common cause of cancer-related mortality worldwide. Here we investigate the role of nuclear factor-κB (NF-κB) co-factor B-cell CLL/lymphoma 3 (BCL-3) in promoting colorectal tumour cell survival. DESIGN Immunohistochemistry was carried out on 47 tumour samples and normal tissue from resection margins. The role of BCL-3/NF-κB complexes on cell growth was studied in vivo and in vitro using an siRNA approach and exogenous BCL-3 expression in colorectal adenoma and carcinoma cells. The question whether BCL-3 activated the AKT/protein kinase B (PKB) pathway in colorectal tumour cells was addressed by western blotting and confocal microscopy, and the ability of 5-aminosalicylic acid (5-ASA) to suppress BCL-3 expression was also investigated. RESULTS We report increased BCL-3 expression in human colorectal cancers and demonstrate that BCL-3 expression promotes tumour cell survival in vitro and tumour growth in mouse xenografts in vivo, dependent on interaction with NF-κB p50 or p52 homodimers. We show that BCL-3 promotes cell survival under conditions relevant to the tumour microenvironment, protecting both colorectal adenoma and carcinoma cells from apoptosis via activation of the AKT survival pathway: AKT activation is mediated via both PI3K and mammalian target of rapamycin (mTOR) pathways, leading to phosphorylation of downstream targets GSK-3β and FoxO1/3a. Treatment with 5-ASA suppressed BCL-3 expression in colorectal cancer cells. CONCLUSIONS Our study helps to unravel the mechanism by which BCL-3 is linked to poor prognosis in colorectal cancer; we suggest that targeting BCL-3 activity represents an exciting therapeutic opportunity potentially increasing the sensitivity of tumour cells to conventional therapy.
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Affiliation(s)
- Bettina C Urban
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
| | - Tracey J Collard
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
| | - Catherine J Eagle
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
| | | | | | | | - Anil Ghosh
- Centre for Digestive Diseases, National Centre for Bowel Research and Surgical Intervention, Blizard Institute of Cell and Molecular Science, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Whitechapel, London, UK
| | - Richard Poulsom
- Centre for Digestive Diseases, National Centre for Bowel Research and Surgical Intervention, Blizard Institute of Cell and Molecular Science, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Whitechapel, London, UK
| | - Christos Paraskeva
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
| | - Andrew Silver
- Centre for Digestive Diseases, National Centre for Bowel Research and Surgical Intervention, Blizard Institute of Cell and Molecular Science, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Whitechapel, London, UK
| | - Ann C Williams
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
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Merga YJ, O'Hara A, Burkitt MD, Duckworth CA, Probert CS, Campbell BJ, Pritchard DM. Importance of the alternative NF-κB activation pathway in inflammation-associated gastrointestinal carcinogenesis. Am J Physiol Gastrointest Liver Physiol 2016; 310:G1081-90. [PMID: 27102559 DOI: 10.1152/ajpgi.00026.2016] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/17/2016] [Indexed: 02/07/2023]
Abstract
Chronic inflammation is a common factor in the development of many gastrointestinal malignancies. Examples include inflammatory bowel disease predisposing to colorectal cancer, Barrett's esophagus as a precursor of esophageal adenocarcinoma, and Helicobacter pylori-induced gastric cancer. The classical activation pathway of NF-κB signaling has been identified as regulating several sporadic and inflammation-associated gastrointestinal tract malignancies. Emerging evidence suggests that the alternative NF-κB signaling pathway also exerts a distinct influence on these processes. This review brings together current knowledge of the role of the alternative NF-κB signaling pathway in the gastrointestinal tract, with a particular emphasis on inflammation-associated cancer development.
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Affiliation(s)
- Yvette J Merga
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Adrian O'Hara
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Michael D Burkitt
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Carrie A Duckworth
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Christopher S Probert
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Barry J Campbell
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - D Mark Pritchard
- Gastroenterology Research Unit, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
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Russo R, Barsanti L, Evangelista V, Frassanito AM, Longo V, Pucci L, Penno G, Gualtieri P. Euglena gracilis paramylon activates human lymphocytes by upregulating pro-inflammatory factors. Food Sci Nutr 2016; 5:205-214. [PMID: 28265355 PMCID: PMC5332256 DOI: 10.1002/fsn3.383] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/08/2016] [Accepted: 04/08/2016] [Indexed: 01/09/2023] Open
Abstract
The aim of this study was to verify the activation details and products of human lymphomonocytes, stimulated by different β-glucans, that is Euglena paramylon, MacroGard®, and lipopolysaccharide. We investigated the gene expression of inflammation-related cytokines and mediators, transactivation of relevant transcription factors, and phagocytosis role in cell-glucan interactions, by means of RT-PCR, immunocytochemistry, and colorimetric assay. Our results show that sonicated and alkalized paramylon upregulates pro-inflammatory factors (NO, TNF-α, IL-6, and COX-2) in lymphomonocytes. A clear demonstration of this upregulation is the increased transactivation of NF-kB visualized by immunofluorescence microscopy. Phagocytosis assay showed that internalization is not a mandatory step for signaling cascade to be triggered, since immune activity is not present in the lymphomonocytes that have internalized paramylon granules and particulate MacroGard®. Moreover, the response of Euglena β-glucan-activated lymphomonocytes is much greater than that induced by commercially used β-glucans such as MacroGard®. Our in vitro results indicate that linear fibrous Euglena β-glucan, obtained by sonication and alkaline treatment can act as safe and effective coadjutant of the innate immune system response.
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Affiliation(s)
- Rossella Russo
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | | | | | | | - Vincenzo Longo
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | - Laura Pucci
- Istituto di Biologia e Biotecnologia Agraria, CNRPisaItaly
| | - Giuseppe Penno
- Dipartimento di Medicina Clinica e SperimentaleSezione Malattie MetabolicheUniversità di PisaPisaItaly
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Yoou MS, Jin MH, Lee SY, Lee SH, Kim B, Roh SS, Choi IH, Lee MS, Kim HM, Jeong HJ. Cordycepin Suppresses Thymic Stromal Lymphopoietin Expression via Blocking Caspase-1 and Receptor-Interacting Protein 2 Signaling Pathways in Mast Cells. Biol Pharm Bull 2016; 39:90-6. [DOI: 10.1248/bpb.b15-00631] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Myoung-schook Yoou
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University
| | - Mu Hyun Jin
- Skin Research Center, Research Park, LG Household & Healthcare Ltd
| | - So Young Lee
- Skin Research Center, Research Park, LG Household & Healthcare Ltd
| | - Sang Hwa Lee
- Skin Research Center, Research Park, LG Household & Healthcare Ltd
| | - Byunghyun Kim
- Skin Research Center, Research Park, LG Household & Healthcare Ltd
| | - Seok Seon Roh
- Whoo Oriental Herb & Skin Research Society
- College of Korean Medicine, Daejeon University
| | - In Hwa Choi
- Whoo Oriental Herb & Skin Research Society
- Department of Oriental Dermatology, College of Korean Medicine, Kyung Hee University
| | - Myeong Soo Lee
- Whoo Oriental Herb & Skin Research Society
- Korea Institute of Oriental Medicine
| | - Hyung-Min Kim
- Department of Pharmacology, College of Korean Medicine, Kyung Hee University
- Whoo Oriental Herb & Skin Research Society
| | - Hyun-Ja Jeong
- Department of Food Technology and Biochip Research Center, Hoseo University
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Differential Gene Expression Profiles and Selected Cytokine Protein Analysis of Mediastinal Lymph Nodes of Horses with Chronic Recurrent Airway Obstruction (RAO) Support an Interleukin-17 Immune Response. PLoS One 2015; 10:e0142622. [PMID: 26561853 PMCID: PMC4642978 DOI: 10.1371/journal.pone.0142622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 10/23/2015] [Indexed: 11/19/2022] Open
Abstract
Recurrent airway obstruction (RAO) is a pulmonary inflammatory condition that afflicts certain mature horses exposed to organic dust particulates in hay. Its clinical and pathological features, manifested by reversible bronchoconstriction, excessive mucus production and airway neutrophilia, resemble the pulmonary alterations that occur in agricultural workers with occupational asthma. The immunological basis of RAO remains uncertain although its chronicity, its localization to a mucosal surface and its domination by a neutrophilic, non-septic inflammatory response, suggest involvement of Interleukin-17 (IL-17). We examined global gene expression profiles in mediastinal (pulmonary-draining) lymph nodes isolated from RAO-affected and control horses. Differential expression of > 200 genes, coupled with network analysis, supports an IL-17 response centered about NF-κB. Immunohistochemical analysis of mediastinal lymph node sections demonstrated increased IL-17 staining intensity in diseased horses. This result, along with the finding of increased IL-17 concentrations in lymph node homogenates from RAO-affected horses (P = 0.1) and a down-regulation of IL-4 gene and protein expression, provides additional evidence of the involvement of IL-17 in the chronic stages of RAO. Additional investigations are needed to ascertain the cellular source of IL-17 in this equine model of occupational asthma. Understanding the immunopathogenesis of this disorder likely will enhance the development of therapeutic interventions beneficial to human and animal pulmonary health.
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Bolshakova A, Magnusson KE, Pinaev G, Petukhova O. Functional compartmentalisation of NF-kB-associated proteins in A431 cells. Cell Biol Int 2015; 37:387-96. [PMID: 23408724 DOI: 10.1002/cbin.10053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 01/10/2013] [Indexed: 12/30/2022]
Abstract
NF-kB proteins belong to a family of ubiquitous transcription factors involved in a number of cellular responses. While the pathways of NF-kB activation and input into the regulation of gene activity have been comprehensively investigated, its cytoplasmic functions are poorly understood. In this study we addressed effects of the compartmentalisation of NF-kB proteins RelA/p65 and p50 in relation to the inhibitor IkB-a, using fibronectin (FN) and epidermal growth factor (EGF) for environmental stimulation of epidermoid carcinoma A431 cells. We thus assessed the presence of NF-kB family proteins in the cytosol, membrane, nuclear and cytoskeletal fractions with a special attention to the cytoskeletal fraction to define whether NFkB was active or not. Sub-cellular fractionation demonstrated that the proportion of RelA/p65 differed in diverse sub-cellular fractions, and that the cytoskeleton harboured about 7% thereof. Neither the nuclear nor the cytoskeleton fraction did contain IkB-a. The cytoskeleton binding of RelA/p65 and p50 was further confirmed by co-localisation and electron microscopy data. During 30-min EGF stimulation similar dynamics were found for RelA/p65 and IkB-a in the cytosol, RelA/p65 and p50 in the nucleus and p50 and IkB-a in the membrane. Furthermore, EGF stimulation for 30 min resulted in a threefold accumulation of RelA/p65 in cytoskeletal fraction. Our results suggest that nuclear-, membrane- and cytoskeleton-associated NF-kB are dynamic and comprise active pools, whereas the cytoplasmic is more constant and likely non-active due to the presence of IkB-a. Moreover, we discovered the existence of a dynamic, IkB-a-free pool of RelA/p65 associated with cytoskeletal fraction, what argues for a special regulatory role of the cytoskeleton in NF-kB stimulation.
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Affiliation(s)
- Anastasia Bolshakova
- Department of Cell Cultures, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Ave. 4, St. Petersburg 194064, Russian Federation
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Srisook K, Srisook E, Nachaiyo W, Chan-In M, Thongbai J, Wongyoo K, Chawsuanthong S, Wannasri K, Intasuwan S, Watcharanawee K. Bioassay-guided isolation and mechanistic action of anti-inflammatory agents from Clerodendrum inerme leaves. JOURNAL OF ETHNOPHARMACOLOGY 2015; 165:94-102. [PMID: 25725433 DOI: 10.1016/j.jep.2015.02.043] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/16/2015] [Accepted: 02/17/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Clerodendrum inerme (L.) Gaertn. have commonly been used in Thai traditional medicine for treatment of inflammatory diseases. However, the bioactive compounds responsible for the anti-inflammatory effect of leaves have not been yet determined. The objective of the present study was to isolate these bioactive compounds by bioassay-guided isolation technique and to determine the mode of action of isolated compounds in LPS-induced macrophages. MATERIALS AND METHODS Anti-inflammatory effect of various fractions (hexane, ethyl acetate and water) of ethanol extract of C. inerme leaves was determined from the production of nitric oxide (NO) in RAW 264.7 macrophage stimulated with LPS. The mRNA and protein levels were determined also by real-time reverse transcription-polymerase chain reaction and western blot analysis, respectively. Leaf bioactive compounds were isolated by bioassay-guided fractionation technique using column chromatography. RESULTS The ethyl acetate fraction (EA) among solvent extracts provided the most potent inhibitory activity on NO production. Also, EA reduced the mRNA and protein expressions of inducible nitric oxide synthase (iNOS) in LPS-stimulated macrophages. Three known flavones, acacetin (1), hispidulin (2) and diosmetin (3), were isolated based on inhibition of NO production. Furthermore, hispidulin also inhibited PGE2 production as well as iNOS and cyclooxygenase-2 expressions via the blockade of NF-κB DNA-binding activity and JNKway. CONCLUSIONS Our results found acacetin (1), hispidulin (2) and diosmetin (3), were responsible for the anti-inflammatory properties of C. inerme leaves. We provide scientific evidence to support the usefulness of C. inerme leaves in traditional medicine for the treatment of inflammation-related diseases.
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Affiliation(s)
- Klaokwan Srisook
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand; Centre of Excellence for Innovation in Chemistry, Burapha University, Muang, Chonburi 20131, Thailand.
| | - Ekaruth Srisook
- Centre of Excellence for Innovation in Chemistry, Burapha University, Muang, Chonburi 20131, Thailand; Department of Chemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand.
| | - Wenuka Nachaiyo
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Mingkwan Chan-In
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Jitra Thongbai
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Karnjanapa Wongyoo
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Sasithorn Chawsuanthong
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Kanita Wannasri
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Sudarat Intasuwan
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
| | - Kingkan Watcharanawee
- Department of Biochemistry, Faculty of Science, Burapha University, Muang, Chonburi 20131, Thailand
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Xue Z, Li H, Wang X, Li X, Liu Y, Sun J, Liu C. A review of the immune molecules in the sea cucumber. FISH & SHELLFISH IMMUNOLOGY 2015; 44:1-11. [PMID: 25655326 DOI: 10.1016/j.fsi.2015.01.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 01/20/2015] [Accepted: 01/26/2015] [Indexed: 06/04/2023]
Abstract
It is very important to identify and characterize the immune-related genes that respond to pathogens. Until recently, only some of the immune-related genes in sea cucumbers had been characterized. Their expression patterns after pathogen challenges have been analyzed via expressed sequence tag libraries, microarray studies and proteomic approaches. These genes include lectins, antimicrobial peptides, lysozyme, enzymes, clotting protein, pattern recognition proteins, Toll receptors, complement C3 and other humoral factors that might participate in the innate immune system of sea cucumbers. Although the participation of some of these immune molecules in the sea cucumber's innate immune defense against invading pathogens has been demonstrated, the functions of many of the molecules remain unclear. This review focuses on the discovery and functional characterization of the immune-related molecules from the sea cucumber for the first time and provides new insights into the immune mechanisms of the sea cucumber, which opens new possibilities for developing drugs for novel anti-bacterial and antiviral applications in fisheries.
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Affiliation(s)
- Zhuang Xue
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China.
| | - Hui Li
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Xiuli Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Xia Li
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Yang Liu
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Jing Sun
- Liaoning Province Academy of Analytic Science, Shenyang 110015, China
| | - Cenjie Liu
- Dalian Institute of Product Quality Supervision & Inspection, Dalian 116023, China
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Mohamed FE, Al-Jehani RM, Minogue SS, Andreola F, Winstanley A, Olde Damink SWM, Habtesion A, Malagó M, Davies N, Luong TV, Dhillon AP, Mookerjee RP, Dhar DK, Jalan R. Effect of toll-like receptor 7 and 9 targeted therapy to prevent the development of hepatocellular carcinoma. Liver Int 2015; 35:1063-76. [PMID: 24990399 DOI: 10.1111/liv.12626] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/18/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Chronic liver disease is a predisposing factor for development of hepatocellular carcinoma (HCC). Toll-like receptors play a crucial role in immunity against microbial pathogens and recent evidence suggests that they may also be important in pathogenesis of chronic liver disease. The purpose of this study was to determine whether TLR7 and TLR9 are potential targets for prevention and progression of HCC. METHODS Tissue microarrays containing liver samples from patients with cirrhosis, viral hepatitis and HCC were examined for expression of TLR7 and TLR9 and the data obtained was validated in liver specimens from the hospital archives. Proliferation of human HCC cell lines was studied following stimulation of TLR7 and TLR9 using agonists (imiquimod and CpG-ODN respectively) and inhibition with a specific antagonist (IRS-954) or chloroquine. The effect of these interventions was confirmed in a xenograft model and diethylnitrosamine (DEN)/nitrosomorpholine (NMOR)-induced model of HCC. RESULTS TLR7 and TLR9 expression was up-regulated in human HCC tissue. Proliferation of HuH7 cells in vitro increased significantly in response to stimulation of TLR7. TLR7 and TLR9 inhibition using IRS-954 or chloroquine significantly reduced HuH7 cell proliferation in vitro and inhibited tumour growth in the mouse xenograft model. HCC development in the DEN/NMOR rat model was also significantly inhibited by chloroquine (P < 0.001). CONCLUSION The data suggest that inhibiting TLR7 and TLR9 with IRS-954 or chloroquine could potentially be used as a novel therapeutic approach for preventing HCC development and/or progression in susceptible patients.
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Affiliation(s)
- Fatma E Mohamed
- UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK; Pathology Department, Minia University, El-Minia, Egypt
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Sahay S, Upadhyay DS, Gupta KP. N-Ethyl-N-nitrosourea-induced transplacental lung tumor development and its control: molecular modulations for tumor susceptibility in a mouse model. Toxicol Res (Camb) 2015. [DOI: 10.1039/c4tx00062e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The development of lung tumors after transplacental N-ethyl-N-nitrosourea (ENU) exposure has been demonstrated in Swiss and Balb/c mice F1 mice.
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Affiliation(s)
- Satya Sahay
- Environmental Carcinogenesis
- CSIR-Indian Institute of Toxicology Research
- Lucknow 226001
- India
| | - Daya S. Upadhyay
- Laboratory Animals Services
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Krishna P. Gupta
- Environmental Carcinogenesis
- CSIR-Indian Institute of Toxicology Research
- Lucknow 226001
- India
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Zhou XL, Xu JJ, Ni YH, Chen XC, Zhang HX, Zhang XM, Liu WJ, Luo LL, Fu YC. SIRT1 activator (SRT1720) improves the follicle reserve and prolongs the ovarian lifespan of diet-induced obesity in female mice via activating SIRT1 and suppressing mTOR signaling. J Ovarian Res 2014; 7:97. [PMID: 25330910 PMCID: PMC4232623 DOI: 10.1186/s13048-014-0097-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Accepted: 10/11/2014] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The prevalence of obesity is increasing worldwide and significantly affects fertility and reproduction in both men and women. Our recent study has shown that excess body fat accelerates ovarian follicle development and follicle loss in rats. The aim of the present study is to explore the effect of SIRT1 activator SRT1720 on the reserve of ovarian follicle pool and ovarian lifespan of obese mice and the underlying mechanism associated with SIRT1 and mTOR signaling. METHODS Adult female Kunming mice (n = 36) were randomly divided into three groups: the normal control (NC) group (n = 8), the caloric restriction (CR) group (fed 70% food of the NC group, n = 8) and the high-fat diet (HF) group (fed a rodent chow containing 20% fat, n = 20). After 4 months, the HF mice were further randomly divided into three groups: the control high-fat diet (CHF, n = 8) group (treated every day with an intraperitoneal injection of vehicle), the SRT1720 (SRT, n = 6) group (treated every other day with an intraperitoneal injection of SRT1720 (50 mg/kg)), the SRT1720 and nicotinamide (NAM, n = 6) group (treated every other day with an intraperitoneal injection of SRT1720 (50 mg/kg) and every day with an intraperitoneal injection of nicotinamide (100 mg/kg)). After 6 weeks of treatment, ovaries were harvested for histological and Western blotting analyses. RESULTS The body weight, ovary weight and visceral fat in the SRT group were significantly lower than those in the CHF group at the end of treatment. Histological analysis showed that the SRT mice had significantly greater number and percentage of primordial follicles, but lower number and percentage of corpora lutea and atretic follicles than the CHF mice and NAM mice. Western blot analysis demonstrated that the levels of SIRT1, SIRT6, FOXO3a and NRF-1 protein expression significantly increased in the ovaries of SRT mice, whereas those of mTORC1, p-mTOR, p-p70S6K, NFκB and p53 decreased compared to the CHF and NAM mice. CONCLUSIONS Our study suggests that SRT1720 may improve the follicle pool reserve in HF diet-induced obese female mice via activating SIRT1 signaling and suppressing mTOR signaling, thus extending the ovarian lifespan.
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Affiliation(s)
- Xiao-Ling Zhou
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Jin-Jie Xu
- Laboratory of Cell Senescence, Shantou University Medical College, 22 Xin Ling Rd, Jinping District, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Yan-Hong Ni
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Xiao-Chun Chen
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Hong-Xia Zhang
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Xing-Mei Zhang
- Department of Gynaecology and Obstetrics of Huizhou Municipal Central Hospital, Huizhou, Guangdong Province, 516001, People's Republic of China.
| | - Wei-Juan Liu
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Li-Li Luo
- Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, 515041, People's Republic of China.
| | - Yu-Cai Fu
- Laboratory of Cell Senescence, Shantou University Medical College, 22 Xin Ling Rd, Jinping District, Shantou, Guangdong Province, 515041, People's Republic of China.
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González-Pardo V, Verstuyf A, Boland R, Russo de Boland A. Vitamin D analogue TX 527 down-regulates the NF-κB pathway and controls the proliferation of endothelial cells transformed by Kaposi sarcoma herpesvirus. Br J Pharmacol 2014; 169:1635-45. [PMID: 23647513 DOI: 10.1111/bph.12219] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 02/14/2013] [Accepted: 04/25/2013] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND PURPOSE The Kaposi sarcoma (KS)-associated herpesvirus GPCR (vGPCR) is a key molecule in the pathogenesis of KS, where it increases NF-κB gene expression and activates the NF-κB pathway. We investigated whether the less calcemic vitamin D analogue TX 527 inhibited the proliferation of endothelial cells transformed by vGPCR by modulation of the NF-κB pathway. EXPERIMENTAL APPROACH Endothelial cells transformed by vGPCR (SVEC-vGPCR) were treated with TX 527. Proliferation was measured by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (MTS) and cell cycle by flow cytometry. mRNA and protein levels were measured by real-time quantitative reverse transcriptase-PCR (qRT-PCR) and immunoblot analysis respectively. KEY RESULTS TX 527, similar to bortezomib (0.5 nM), a proteasome inhibitor that inhibits the activation of NF-κB, reduced proliferation and induced G0/G1 cell cycle arrest in SVEC-vGPCR. TX 527 like 1α,25(OH)2 D3 , biological active form of vitamin D, decreased the activity of NF-κB comparable with the effect of bortezomib. Time-response studies showed that TX 527 significantly decreased NF-κB and increased IκBα mRNA and protein levels. The increase of IκBα was accompanied by a reduction in p65/NF-κB translocation to the nucleus. These responses were abolished when vitamin D receptor (VDR) expression was suppressed by stable transfection of shRNA against VDR. In parallel with NF-κB inhibition, there was a down-regulation of inflammatory genes such as IL-6, CCL2/MCP and CCL20/MIP3α. CONCLUSIONS AND IMPLICATIONS These results suggest that the anti-proliferative effects of the vitamin D analogue TX 527 in SVEC-vGPCR occur by modulation of the NF-κB pathway and are VDR dependent.
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Affiliation(s)
- V González-Pardo
- Departamento de Biología, Bioquímica & Farmacia, Universidad Nacional del Sur - Consejo Nacional de Investigaciones Científicas & Técnicas (CONICET), Bahía Blanca, Argentina.
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Okanishi H, Kagawa Y, Watari T. Expression of selectins and P-selectin glycoprotein ligand-1 in dogs with lymphocytic–plasmacytic enteritis. Vet Immunol Immunopathol 2014; 161:42-8. [DOI: 10.1016/j.vetimm.2014.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/20/2014] [Accepted: 06/26/2014] [Indexed: 12/22/2022]
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NF-kappa B modulation is involved in celastrol induced human multiple myeloma cell apoptosis. PLoS One 2014; 9:e95846. [PMID: 24755677 PMCID: PMC3995890 DOI: 10.1371/journal.pone.0095846] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 03/31/2014] [Indexed: 11/19/2022] Open
Abstract
Celastrol is an active compound extracted from the root bark of the traditional Chinese medicine Tripterygium wilfordii Hook F. To investigate the effect of celastrol on human multiple myeloma cell cycle arrest and apoptosis and explore its molecular mechanism of action. The activity of celastrol on LP-1 cell proliferation was detected by WST-8 assay. The celastrol-induced cell cycle arrest was analyzed by flow cytometry after propidium iodide staining. Nuclear translocation of the nuclear factor kappa B (NF-κB) was observed by fluorescence microscope. Celastrol inhibited cell proliferation of LP-1 myeloma cell in a dose-dependent manner with IC50 values of 0.8817 µM, which was mediated through G1 cell cycle arrest and p27 induction. Celastrol induced apoptosis in LP-1 and RPMI 8226 myeloma cells in a time and dose dependent manner, and it involved Caspase-3 activation and NF-κB pathway. Celastrol down-modulated antiapoptotic proteins including Bcl-2 and survivin expression. The expression of NF-κB and IKKa were decreased after celastrol treatment. Celastrol effectively blocked the nuclear translocation of the p65 subunit and induced human multiple myeloma cell cycle arrest and apoptosis by p27 upregulation and NF-kB modulation. It has been demonstrated that the effect of celastrol on NF-kB was HO-1-independent by using zinc protoporphyrin-9 (ZnPPIX), a selective heme oxygenase inhibitor. From the results, it could be inferred that celastrol may be used as a NF-kB inhibitor to inhibit myeloma cell proliferation.
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Ventura I, Vega A, Chamorro C, Aroca R, Gómez E, Pineda F, Palacios R, Blanca M, Monteseirín J. Allergen immunotherapy decreases LPS-induced NF-κB activation in neutrophils from allergic patients. Pediatr Allergy Immunol 2014; 25:129-35. [PMID: 24118194 DOI: 10.1111/pai.12145] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/05/2013] [Indexed: 11/26/2022]
Abstract
BACKGROUND Allergen-specific immunotherapy (IT) is widely used to treat allergic diseases. The molecular mechanisms have not been clarified yet completely. The present work was undertaken to analyze the effect of IT in the activation of NF-κB. METHODS Neutrophils from 15 pollen-allergic IT-treated patients, 10 untreated pollen-allergic patients, and 10 healthy donors were in vitro stimulated with LPS. NF-κB activation (p65/p52) was measured in their nuclear extracts by enzyme-linked immunosorbent assay (ELISA). IκBα phosphorylation, NF-κB-repressing factor (NRF) activation, and thromboxane A2 (TXA2 ) and Interleukin-8 (IL-8) release were measured by ELISA. RESULTS There was a positive correlation between the score of symptoms and NF-κB activation in human neutrophils. IT significantly decreased NF-κB activation levels in neutrophils compared with neutrophils from untreated patients. IκBα phosphorylation and NRF activation levels were, respectively, significantly lower and higher in neutrophils from IT-treated patients than from untreated patients. IL-8 and TXA2 release were significantly lower in neutrophils from IT-treated patients than from untreated patients. CONCLUSIONS IT positive effects are at least in part mediated by the negative regulation of NF-κB activation in human neutrophils. These observations represent a novel view of neutrophils as possible cell target to treat IgE-dependent diseases through NF-κB downmodulation.
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Affiliation(s)
- Inmaculada Ventura
- Servicio de Inmunología y Alergia, Hospital Universitario Virgen Macarena, Sevilla, Spain
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Jones MR, Liu C, Wilson AK. Molecular dynamics studies of the protein-protein interactions in inhibitor of κB kinase-β. J Chem Inf Model 2014; 54:562-72. [PMID: 24437505 DOI: 10.1021/ci400720n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Activation of the inhibitor of κB kinase subunit β (IKKβ) oligomer initiates a cascade that results in the translocation of transcription factors involved in mediating immune responses. Dimerization of IKKβ is required for its activation. Coarse-grained and atomistic molecular dynamics simulations were used to investigate the conformation-activity and structure-activity relationships within the oligomer assembly of IKKβ that are impacted upon activation, mutation, and binding of ATP. Intermolecular interactions, free energies, and conformational changes were compared among several conformations, including a monomer, two different dimers, and the tetramer. Modifications to the activation segment induce conformational changes that disrupt dimerization and suggest that the multimeric assembly mediates a global stability for the enzyme that influences the activity of IKKβ.
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Affiliation(s)
- Michael R Jones
- Department of Chemistry and Center for Advanced Scientific Computing and Modeling, University of North Texas , Denton, Texas 76203-5017, United States
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Correlation of BAG-3 and heat shock protein 70 with CD30 expression in T-cell lymphomas. Sci Rep 2014; 4:3952. [PMID: 24492285 PMCID: PMC3912476 DOI: 10.1038/srep03952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 01/16/2014] [Indexed: 11/08/2022] Open
Abstract
T-cell lymphomas are aggressive lymphomas with decreased prognosis and resistance to therapy. BAG-3 and heat shock protein 70 (HSP70) function in chemotherapeutic resistance and cellular survival. Expression of BAG-3 has not been investigated in T cell lymphomas. We investigated fifty cases including benign, systemic and cutaneous T cell lymphomas. Benign T cells were negative for BAG-3 and HSP70 immunohistochemical staining. BAG-3 expression correlated with increased HSP70 expression in a subset of systemic T cell lymphoma cases co-expressing the CD30 antigen. Correlation between BAG-3, HSP70 and CD30 expression was not seen in cutaneous T cell lymphoma cases. However, these cases showed a significant increase in BAG-3 staining when compared to CD30 negative systemic T cell lymphoma cases. The differential protein expression profile of BAG-3 and HSP70 may indicate a specific role for these proteins and the ubiquitin-proteasome system/autophagy in T cell lymphomas which may help guide future targeted therapy.
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Pereira MI, Medeiros JA. Role of Helicobacter pylori in gastric mucosa-associated lymphoid tissue lymphomas. World J Gastroenterol 2014; 20:684-698. [PMID: 24574742 PMCID: PMC3921478 DOI: 10.3748/wjg.v20.i3.684] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/19/2013] [Accepted: 12/06/2013] [Indexed: 02/06/2023] Open
Abstract
Mucosa-associated lymphoid tissue (MALT) lymphoma is an indolent extranodal marginal zone B-cell lymphoma, originating in acquired MALT that is induced in mucosal barriers as part of a normal adaptive immune response to a chronic immunoinflammatory stimulus, most notably chronic infection by Helicobacter pylori (H. pylori). This antigenic stimulation initially leads to lymphoid hyperplasia; the acquisition of additional genetic aberrations culminates in the activation of intracellular survival pathways, with disease progression due to proliferation and resistance to apoptosis, and the emergence of a malignant clone. There are descriptions of MALT lymphomas affecting practically every organ and system, with a marked geographic variability partially attributable to the epidemiology of the underlying risk factors; nevertheless, the digestive system (and predominantly the stomach) is the most frequently involved location, reflecting the gastrointestinal tract’s unique characteristics of contact with foreign antigens, high mucosal permeability, large extension and intrinsic lymphoid system. While early-stage gastric MALT lymphoma can frequently regress after the therapeutic reversal of the chronic immune stimulus through antibiotic eradication of H. pylori infection, the presence of immortalizing genetic abnormalities, of advanced disease or of eradication-refractoriness requires a more aggressive approach which is, presently, not consensual. The fact that MALT lymphomas are rare neoplasms, with a worldwide incidence of 1-1.5 cases per 105 population, per year, limits the ease of accrual of representative series of patients for robust clinical trials that could sustain informed evidence-based therapeutic decisions to optimize the quality of patient care.
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MESH Headings
- Gastric Mucosa/immunology
- Gastric Mucosa/microbiology
- Helicobacter Infections/epidemiology
- Helicobacter Infections/immunology
- Helicobacter Infections/microbiology
- Helicobacter Infections/therapy
- Helicobacter pylori/immunology
- Helicobacter pylori/pathogenicity
- Humans
- Immunity, Mucosal
- Lymphoma, B-Cell, Marginal Zone/epidemiology
- Lymphoma, B-Cell, Marginal Zone/genetics
- Lymphoma, B-Cell, Marginal Zone/immunology
- Lymphoma, B-Cell, Marginal Zone/microbiology
- Lymphoma, B-Cell, Marginal Zone/therapy
- Prognosis
- Risk Factors
- Stomach Neoplasms/epidemiology
- Stomach Neoplasms/genetics
- Stomach Neoplasms/immunology
- Stomach Neoplasms/microbiology
- Stomach Neoplasms/therapy
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Abstract
Over the centuries, plant extracts have been used to treat various diseases. Until now, natural products have played an important role in anticancer therapy as there are more than 500 compounds from terrestrial and marine plants or microorganisms, which have antioxidant, antiproliferative, or antiangiogenic properties and are therefore able to reduce tumor growth. The recent discovery of new natural products has been accelerated by novel technologies (high throughput screening of natural products in plants, animals, marine organisms, and microorganisms). Vincristine, irinotecan, etoposide, and paclitaxel are examples of compounds derived from plants that are used in cancer treatment. Similarly, actinomycin D, mitomycin C, bleomycin, doxorubicin, and L-asparaginase are drugs derived from microorganisms. In this review, we describe the molecular mechanisms of natural compounds with anti-inflammatory and anticancer activities.
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Elisia I, Kitts DD. Modulation of NF-κB and Nrf2 control of inflammatory responses in FHs 74 Int cell line is tocopherol isoform-specific. Am J Physiol Gastrointest Liver Physiol 2013; 305:G940-9. [PMID: 24136788 PMCID: PMC3882439 DOI: 10.1152/ajpgi.00269.2013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The present study investigates the relative ability of α-, γ-, and δ-tocopherol (Toc) to modulate cell signaling events that are associated with inflammatory responses in fetal-derived intestinal (FHs 74 Int) cells. Secretion of the proinflammatory cytokine IL-8 in FHs 74 Int cells was stimulated in the following order: α-Toc<γ-Toc<δ-Toc. A similar proinflammatory response was observed when inflammation was induced in FHs 74 Int cells. Modulation of IL-8 expression by Toc corresponded to an isoform-specific modulation of NF-κB and nuclear factor-erythroid 2-related factor 2 (Nrf2) cell signaling pathways involved in expression of proinflammatory cytokines and antioxidant enzymes, respectively. δ-Toc and, to a lesser extent, γ-Toc activated NF-κB and Nrf2 signaling, as indicated by the greater nuclear translocation of transcription factors. Activation of NF-κB signaling by γ- and δ-Toc was accompanied by upregulation of NF-κB target genes, such as IL-8 and prostaglandin-endoperoxide synthase 2, with and without a prior IFNγ-PMA challenge. Nevertheless, γ- and δ-Toc, particularly δ-Toc, concurrently downregulated glutamate-cysteine ligase, a Nrf2 target gene that encodes for glutathione biosynthesis. This observation was substantiated by confirmation that γ- and δ-Toc were effective at decreasing glutamate-cysteine ligase protein expression and cellular glutathione content. Downregulation of glutathione content in fetal intestinal cells corresponded to induction of apoptosis-mediated cytotoxicity. In conclusion, γ- and δ-Toc are biologically active isoforms of vitamin E and show superior bioactivity to α-Toc in modulating cell signaling events that contribute to a proinflammatory response in fetal-derived intestinal cells.
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Affiliation(s)
- Ingrid Elisia
- Food, Nutrition, and Health Program, Univ. of British Columbia, 2205 East Mall, Vancouver, BC, Canada V6T 1Z4.
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Elisia I, Kitts DD. Different tocopherol isoforms vary in capacity to scavenge free radicals, prevent inflammatory response, and induce apoptosis in both adult- and fetal-derived intestinal epithelial cells. Biofactors 2013; 39:663-71. [PMID: 23983193 DOI: 10.1002/biof.1132] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 07/04/2013] [Accepted: 07/12/2013] [Indexed: 01/11/2023]
Abstract
Gamma-tocopherol (γ-Toc) and δ-Toc are two vitamin E isoforms for which biological activities are not well established, yet these isoforms are present in many different sources of vegetable oils and, therefore, contribute significantly to the total dietary intake of vitamin E. Infant formula also contains relatively high amounts of γ-Toc and δ-Toc, compared with that found in human milk. The efficacy of γ-Toc and δ-Toc to modulate cellular events that include oxidative stress, inflammatory response, and apoptosis-mediated cytotoxicity, relative to α-Toc, was determined using differentiated Caco-2 and primary FHs 74 Int cells intestinal epithelial cell lines. Antioxidant capacity of Toc-isoforms followed the order of δ-Toc > γ-Toc > α-Toc against peroxyl radical-induced membrane oxidation in both Caco-2 and FHs 74 Int cells, respectively. The different Toc-isoforms suppressed inflammatory response in interferon (IFN) γ/phorbol myristate acetate (PMA)-induced Caco-2 adult-derived intestinal epithelial cells, but exacerbated both IL8 and PGE2 secretion in fetal-derived FHs 74 Int intestinal epithelial cells. Lastly, Toc exhibited an isoform-dependent apoptosis-mediated cytotoxicity, whereby δ-Toc elicited the greatest apoptosis followed by γ-Toc, whereas α-Toc was not cytotoxic. Cellular uptake of non-α-Toc isoforms were greater (P < 0.05) than that observed for α-Toc in both intestinal epithelial cell lines which in part explains the superior bioactive function observed for both γ-Toc and δ-Toc, compared with α-Toc. We conclude that the non-α-Toc isoforms of vitamin E have distinct roles that influence oxidative stress and inflammatory responses in both adult and fetal-derived intestinal epithelial cell lines.
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Affiliation(s)
- Ingrid Elisia
- Food Nutrition and Health Program, University of British Columbia, Vancouver, BC, Canada
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Osteoprotegerin exerts its pro-inflammatory effects through nuclear factor-κB activation. Dig Dis Sci 2013; 58:3144-55. [PMID: 24048682 DOI: 10.1007/s10620-013-2851-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 08/20/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Osteoprotegerin (OPG), a soluble member of the tumor necrosis factor (TNF) receptor super-family, is a key factor inhibiting the differentiation and activation of osteoclasts. It has recently been implicated as a disease marker for inflammatory bowel disease (IBD) yet its role in the intestinal epithelial inflammatory response remains unknown. AIM The primary objective of this study was to investigate whether OPG has a role in intestinal inflammation and a potential role in IBD pathogenesis. METHODS Caco-2 and HT-29 cells were grown in vitro to confluence on culture-permeable supports and then co-cultured with either TNF-α or OPG. After exposure to either TNF-α or OPG, interleukin (IL)-8 protein and mRNA levels were evaluated. Ussing chamber, western blotting, real-time polymerase chain reaction, and immunofluorescence were used to further investigate the effect of OPG on intestinal barrier integrity and function. RESULTS Similar to TNF-α, treatment of monolayers with OPG caused increased monolayer permeability and diminished tight junction function and integrity, with loss of tight junction proteins from cell membranes. This was accompanied by elevated IL-8 protein and gene levels (P < 0.05). Western blotting also revealed that OPG, similar to TNF-α, induced NF-κB activation, as shown by inhibition of NF-κB kinase subunit-α phosphorylation. CONCLUSIONS These results indicate that OPG has pro-inflammatory properties because it induces gut barrier dysfunction and secretion of other pro-inflammatory cytokines. These results also provide evidence that OPG is likely to exert its pro-inflammatory effects through NF-κB activation and may potently contribute to IBD pathogenesis.
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Gupta R, Mehra NK, Jain NK. Development and characterization of sulfasalazine loaded fucosylated PPI dendrimer for the treatment of cytokine-induced liver damage. Eur J Pharm Biopharm 2013; 86:449-58. [PMID: 24189499 DOI: 10.1016/j.ejpb.2013.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 09/11/2013] [Accepted: 10/28/2013] [Indexed: 02/05/2023]
Abstract
The present investigation was aimed at exploring the targeting potential of sulfasalazine (NF-κB inhibitor drug) loaded fucose tethered poly (propylene imine) (PPI) dendritic nanoarchitecture (SSZ-FUCO-PPID) to Kupffer cells for effective management of cytokine-induced liver damage. The SSZ-FUCO-PPID formulation was characterized for entrapment efficiency, in vitro release, stability, toxicological investigations, macrophage uptake, NF-κB inhibition, and in vivo studies. In cell uptake assay the uptake of SSZ-FUCO-PPID was found to be higher and preferentially by J774 macrophage cell line. Cytokine assay suggested that the SSZ-FUCO-PPID potentially inhibited the IL-12 p40 production in LPS activated macrophages. Western blot analysis clearly suggested that SSZ-FUCO-PPID inhibited the activation of NF-κB as indicated by the absence of p-IκB band. Pharmacokinetic study revealed improved bioavailability, half-life and mean residence time of SSZ upon fucosylation of dendrimers. The biodistribution pattern clearly established the higher amount of SSZ-FUCO-PPID in liver. Hematological data suggest that the fucosylated formulations are less immunogenic as compared to unconjugated formulations. The results suggest that the SSZ-FUCO-PPID formulation holds targeting potential to Kupffer cells for the treatment of cytokine-induced liver damage.
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Affiliation(s)
- Richa Gupta
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India
| | - Neelesh Kumar Mehra
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India.
| | - Narendra Kumar Jain
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, India.
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Activation of J774.1 murine macrophages by lactate dehydrogenase. Cytotechnology 2013; 66:937-43. [PMID: 24101442 DOI: 10.1007/s10616-013-9646-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 09/14/2013] [Indexed: 10/26/2022] Open
Abstract
We have already reported that lactate dehydrogenase (LDH) activates lymphocytes in vitro and in vivo. In this paper, we report the activating effects of LDH on the macrophage-like cell line J774.1. LDH was found to enhance production of IL-6 and TNF-α by J774.1 cells in a dose-dependent manner. Transcription levels of IL-6 and TNF-α in J774.1 cells were also enhanced by supplementation with LDH. From immunoblot analysis, it was revealed that LDH enhances the phosphorylation level of JNK in J774.1 cells. Moreover, the JNK inhibitor SP600125 decreased production of IL-6 and TNF-α induced by LDH. NF-κB translocation to the nucleus was also facilitated by LDH. These results was revealed that LDH enhances production of IL-6 and TNF-α by J774.1 cells via the increase of JNK phosphorylation and NF-κB translocation to the nucleus. Our data indicated that macrophages may be activated by LDH released from damaged tissues and cells in our body.
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Gupta R, Mehra NK, Jain NK. Fucosylated multiwalled carbon nanotubes for Kupffer cells targeting for the treatment of cytokine-induced liver damage. Pharm Res 2013; 31:322-34. [PMID: 24043294 DOI: 10.1007/s11095-013-1162-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 07/28/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE To develop, characterize and exploring the sulfasalazine loaded fucoyslated multi walled carbon nanotubes for Kupffer cell targeting for effective management of cytokine-induce liver damage. METHODS Sulfasalazine was loaded into the fucosylated MWCNTs after subsequential functionalization (carboxylation, acylation and amidation) using dialysis membrane technique. The in vitro, in vivo studies were performed on macrophages J 774 cell line for Kupffer cells targeting for the treatment of cytokine-induced liver damage. RESULTS The loading of SSZ into SSZ-FUCO-MWCNTs was 87.77 ± 0.11% (n = 3). Sustained release was obtained from SSZ-FUCO-MWCNTs, with 89.12 ± 0.71% of SSZ released into medium at 48th hr. SSZ-FUCO-MWCNTs showed the 9.0 ± 0.23% hemolysis was drastically reduced from 21.62 ± 0.24% SSZMWCNTs 21.62 ± 0.24%. In SRB assay, SSZ-FUCO-MWCNTs showed more cytotoxicity than raw and SSZ-MWCNTs. In cytokine assay, SSZ- FUCO-MWCNTs exhibited significantly higher inhibition of IL-12 p40 secretion. In Western blot assay, SSZ-FUCO-MWCNTs significantly inhibit NF-κB activation. CONCLUSION The results suggested that the SSZ-FUCO-MWCNTs may be useful nano-carriers for targeted delivery to Kupffer cells in the treatment of cytokine-induced liver damage.
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Affiliation(s)
- Richa Gupta
- Pharmaceutics Research Laboratory Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar, MP, 470 003, India
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