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Shen X, Ruan Y, Zhao Y, Ye Q, Huang W, He L, He Q, Cai W. Ophiopogonin D alleviates acute lung injury by regulating inflammation via the STAT3/A20/ASK1 axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155482. [PMID: 38824823 DOI: 10.1016/j.phymed.2024.155482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/11/2024] [Accepted: 02/23/2024] [Indexed: 06/04/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is characterized by acute pulmonary inflammatory infiltration. Alveolar epithelial cells (AECs) release numerous pro-inflammatory cytokines, which result in the pathological changes seen in ALI. Ophiopogonin D (OD), extracted from the roots of Ophiopogon japonicus (Thunb.) Ker Gawl. (Liliaceae), reduces inflammation; however, the efficacy of OD in ALI has not been reported and the underlying molecular mechanisms remain unclear. PURPOSE This study investigated the anti-inflammatory effects of OD, as well as the underlying mechanisms, in AECs and a mouse ALI model. METHODS Lipopolysaccharide (LPS) and tumor necrosis factor-α (TNF-α) were used to stimulate macrophages and A549 cells, and a mouse ALI model was established by intratracheal LPS administration. The anti-inflammatory effects and mechanisms of OD in the TNF-α-induced in vitro inflammation model was evaluated using real-time quantitative polymerase chain reaction qPCR), enzyme-linked immunosorbent assay (ELISA), western blotting, nuclear and cytoplasmic protein extraction, and immunofluorescence. The in vivo anti-inflammatory activity of OD was evaluated using hematoxylin and eosin staining, qPCR, ELISA, and western blotting. RESULTS The bronchoalveolar lavage fluid and lung tissue of LPS-induced ALI mice exhibited increased TNF-α expression. TNF-α induced a significantly greater pro-inflammatory effect in AECs than LPS. OD reduced inflammation and mitogen-activated protein kinase (MAPK) and transcription factor p65 phosphorylation in vivo and in vitro and promoted signal transducer and activator of transcription 3 (STAT3) phosphorylation and A20 expression, thereby inducing apoptosis signal-regulating kinase 1 (ASK1) proteasomal degradation. CONCLUSION OD exerts an anti-inflammatory effect by promoting STAT3-dependent A20 expression and ASK1 degradation. OD may therefore have therapeutic value in treating ALI and other TNF-α-related inflammatory diseases.
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Affiliation(s)
- Xiao Shen
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yiqiu Ruan
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yuhui Zhao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qiang Ye
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wenhan Huang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Linglin He
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qianwen He
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wanru Cai
- The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310005, China.
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Xu M, Li W, He J, Wang Y, Lv J, He W, Chen L, Zhi H. DDCM: A Computational Strategy for Drug Repositioning Based on Support-Vector Regression Algorithm. Int J Mol Sci 2024; 25:5267. [PMID: 38791306 PMCID: PMC11121335 DOI: 10.3390/ijms25105267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/25/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
Computational drug-repositioning technology is an effective tool for speeding up drug development. As biological data resources continue to grow, it becomes more important to find effective methods to identify potential therapeutic drugs for diseases. The effective use of valuable data has become a more rational and efficient approach to drug repositioning. The disease-drug correlation method (DDCM) proposed in this study is a novel approach that integrates data from multiple sources and different levels to predict potential treatments for diseases, utilizing support-vector regression (SVR). The DDCM approach resulted in potential therapeutic drugs for neoplasms and cardiovascular diseases by constructing a correlation hybrid matrix containing the respective similarities of drugs and diseases, implementing the SVR algorithm to predict the correlation scores, and undergoing a randomized perturbation and stepwise screening pipeline. Some potential therapeutic drugs were predicted by this approach. The potential therapeutic ability of these drugs has been well-validated in terms of the literature, function, drug target, and survival-essential genes. The method's feasibility was confirmed by comparing the predicted results with the classical method and conducting a co-drug analysis of the sub-branch. Our method challenges the conventional approach to studying disease-drug correlations and presents a fresh perspective for understanding the pathogenesis of diseases.
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Affiliation(s)
- Manyi Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Wan Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Jiaheng He
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Yahui Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Junjie Lv
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Weiming He
- Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150000, China;
| | - Lina Chen
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
| | - Hui Zhi
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin 150000, China; (M.X.); (W.L.); (J.H.); (Y.W.); (J.L.)
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Aggio JB, Porto BN, Duarte dos Santos CN, Mosimann ALP, Wowk PF. Human Neutrophils Present Mild Activation by Zika Virus But Reduce the Infection of Susceptible Cells. Front Immunol 2022; 13:784443. [PMID: 35747137 PMCID: PMC9210994 DOI: 10.3389/fimmu.2022.784443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 05/02/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of the Zika virus (ZIKV) has highlighted the need for a deeper understanding of virus-host interactions in order to pave the way for the development of antiviral therapies. The present work aimed to address the response of neutrophils during ZIKV infection. Neutrophils are important effector cells in innate immunity implicated in the host’s response to neurotropic arboviruses. Our results indicate that human neutrophils were not permissive to Asian or African ZIKV strain replication. In fact, after stimulation with ZIKV, neutrophils were mild primed against the virus as evaluated through CD11b and CD62L modulation, secretion of inflammatory cytokines and granule content, production of reactive oxygen species, and neutrophil extracellular traps formation. Overall, neutrophils did not affect ZIKV infectivity. Moreover, in vitro ZIKV infection of primary innate immune cells did not trigger neutrophil migration. However, neutrophils co-cultured with ZIKV susceptible cell lineages resulted in lower cell infection frequencies, possibly due to cell-to-cell contact. In vivo, neutrophil depletion in immunocompetent mice did not affect ZIKV spreading to the draining lymph nodes. The data suggest that human neutrophils do not play an antiviral role against ZIKV per se, but these cells might participate in an infected environment shaping the ZIKV infection in other target cells.
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Affiliation(s)
- Juliana Bernardi Aggio
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz (FIOCRUZ), Curitiba, Brazil
| | - Bárbara Nery Porto
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- Biology of Breathing Group, Children’s Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
| | | | - Ana Luiza Pamplona Mosimann
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz (FIOCRUZ), Curitiba, Brazil
- *Correspondence: Pryscilla Fanini Wowk, ; Ana Luiza Pamplona Mosimann,
| | - Pryscilla Fanini Wowk
- Laboratório de Virologia Molecular, Instituto Carlos Chagas, Fundação Oswaldo Cruz (FIOCRUZ), Curitiba, Brazil
- *Correspondence: Pryscilla Fanini Wowk, ; Ana Luiza Pamplona Mosimann,
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Grubwieser P, Hoffmann A, Hilbe R, Seifert M, Sonnweber T, Böck N, Theurl I, Weiss G, Nairz M. Airway Epithelial Cells Differentially Adapt Their Iron Metabolism to Infection With Klebsiella pneumoniae and Escherichia coli In Vitro. Front Cell Infect Microbiol 2022; 12:875543. [PMID: 35663465 PMCID: PMC9157649 DOI: 10.3389/fcimb.2022.875543] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/22/2022] [Indexed: 12/13/2022] Open
Abstract
Background Pneumonia is often elicited by bacteria and can be associated with a severe clinical course, respiratory failure and the need for mechanical ventilation. In the alveolus, type-2-alveolar-epithelial-cells (AECII) contribute to innate immune functions. We hypothesized that AECII actively adapt cellular iron homeostasis to restrict this essential nutrient from invading pathogens - a defense strategy termed 'nutritional immunity', hitherto mainly demonstrated for myeloid cells. Methods We established an in-vitro infection model using the human AECII-like cell line A549. We infected cells with Klebsiella pneumoniae (K. pneumoniae) and Escherichia coli (E. coli), two gram-negative bacteria with different modes of infection and frequent causes of hospital-acquired pneumonia. We followed the entry and intracellular growth of these gram-negative bacteria and analyzed differential gene expression and protein levels of key inflammatory and iron metabolism molecules. Results Both, K. pneumoniae and E. coli are able to invade A549 cells, whereas only K. pneumoniae is capable of proliferating intracellularly. After peak bacterial burden, the number of intracellular pathogens declines, suggesting that epithelial cells initiate antimicrobial immune effector pathways to combat bacterial proliferation. The extracellular pathogen E. coli induces an iron retention phenotype in A549 cells, mainly characterized by the downregulation of the pivotal iron exporter ferroportin, the upregulation of the iron importer transferrin-receptor-1 and corresponding induction of the iron storage protein ferritin. In contrast, cells infected with the facultative intracellular bacterium K. pneumoniae exhibit an iron export phenotype indicated by ferroportin upregulation. This differential regulation of iron homeostasis and the pathogen-specific inflammatory reaction is likely mediated by oxidative stress. Conclusion AECII-derived A549 cells show pathogen-specific innate immune functions and adapt their iron handling in response to infection. The differential regulation of iron transporters depends on the preferential intra- or extracellular localization of the pathogen and likely aims at limiting bacterial iron availability.
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Affiliation(s)
- Philipp Grubwieser
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexander Hoffmann
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Richard Hilbe
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Thomas Sonnweber
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Nina Böck
- Biocenter, Institute of Bioinformatics, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Medical University of Innsbruck, Innsbruck, Austria
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Downregulation of FOXP3 in neutrophils by IL-8 promotes the progression of oral squamous cell carcinoma. Oncol Lett 2019; 18:4771-4777. [PMID: 31611987 PMCID: PMC6781744 DOI: 10.3892/ol.2019.10828] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022] Open
Abstract
The aim of the present study was to investigate the effects of the transcription factor forkhead box P3 (FOXP3) in neutrophils on the progression of oral squamous cell carcinoma (OSCC). Cancer tissue samples and paracarcinoma tissues were collected from 23 patients with OSCC for the current study. In addition, SCC-9, a human tongue carcinoma cell line, was co-cultured with primary human neutrophils and treated with recombinant interleukin 8 (IL-8). The effect of FOXP3 on the proliferation of SCC-9 cells was analyzed using a Cell Counting Kit 8 assay. FOXP3 expression in neutrophils was analyzed by quantitative PCR following IL-8 treatment. FOXP3 protein expression in neutrophils and the amount of IL-8 protein in the OSCC tumor microenvironment were determined by immunofluorescence analysis. The present study demonstrated that IL-8 downregulated FOXP3 mRNA expression in neutrophils. Neutrophils and peptide P60, a specific inhibitor of FOXP3, increased proliferation of SCC-9 cells. In patients with OSCC, FOXP3 protein expression in neutrophils of the stage IV group was significantly lower compared with that of the stage II and stage III groups, while IL-8 protein expression was higher in cancer tissues compared with that in paracarcinoma tissues. In summary, IL-8 in the tumor microenvironment may recruit neutrophils, and downregulation of FOXP3 in neutrophils by IL-8 may promote the progression of OSCC.
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Hattar K, Reinert CP, Sibelius U, Gökyildirim MY, Subtil FSB, Wilhelm J, Eul B, Dahlem G, Grimminger F, Seeger W, Grandel U. Lipoteichoic acids from Staphylococcus aureus stimulate proliferation of human non-small-cell lung cancer cells in vitro. Cancer Immunol Immunother 2017; 66:799-809. [PMID: 28314957 PMCID: PMC5445152 DOI: 10.1007/s00262-017-1980-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 02/24/2017] [Indexed: 12/22/2022]
Abstract
Pulmonary infections are frequent complications in lung cancer and may worsen its outcome and survival. Inflammatory mediators are suspected to promote tumor growth in non-small-cell lung cancer (NSCLC). Hence, bacterial pathogens may affect lung cancer growth by activation of inflammatory signalling. Against this background, we investigated the effect of purified lipoteichoic acids (LTA) of Staphylococcus aureus (S. aureus) on cellular proliferation and liberation of interleukin (IL)-8 in the NSCLC cell lines A549 and H226. A549 as well as H226 cells constitutively expressed TLR-2 mRNA. Even in low concentrations, LTA induced a prominent increase in cellular proliferation of A549 cells as quantified by automatic cell counting. In parallel, metabolic activity of A549 cells was enhanced. The increase in proliferation was accompanied by an increase in IL-8 mRNA expression and a dose- and time-dependent release of IL-8. Cellular proliferation as well as the release of IL-8 was dependent on specific ligation of TLR-2. Interestingly, targeting IL-8 by neutralizing antibodies completely abolished the LTA-induced proliferation of A549 cells. The pro-proliferative effect of LTA could also be reproduced in the squamous NSCLC cell line H226. In summary, LTA of S. aureus induced proliferation of NSCLC cell lines of adeno- and squamous cell carcinoma origin. Ligation of TLR-2 followed by auto- or paracrine signalling by endogenously synthesized IL-8 is centrally involved in LTA-induced tumor cell proliferation. Therefore, pulmonary infections may exert a direct pro-proliferative effect on lung cancer growth.
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Affiliation(s)
- Katja Hattar
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Christian P Reinert
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Ulf Sibelius
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Mira Y Gökyildirim
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | | | - Jochen Wilhelm
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
| | - Bastian Eul
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Gabriele Dahlem
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Friedrich Grimminger
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Werner Seeger
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany.,Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Ulrich Grandel
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany. .,Asklepios Klinik Lich, Lich, Germany.
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Evaluation of NAD(P)-Dependent Dehydrogenase Activities in Neutrophilic Granulocytes by the Bioluminescent Method. Bull Exp Biol Med 2015; 159:692-5. [PMID: 26468025 DOI: 10.1007/s10517-015-3049-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Indexed: 10/22/2022]
Abstract
Bioluminescent method for measurements of the neutrophilic NAD(P)-dependent dehydrogenases (lactate dehydrogenase, NAD-dependent malate dehydrogenase, NADP-dependent decarboxylating malate dehydrogenase, NAD-dependent isocitrate dehydrogenase, and glucose- 6-phosphate dehydrogenase) is developed. The sensitivity of the method allows minimization of the volume of biological material for measurements to 104 neutrophils per analysis. The method is tried in patients with diffuse purulent peritonitis. Low levels of NADPH synthesis enzymes and high levels of enzymes determining the substrate flow by the Krebs cycle found in these patients can lead to attenuation of functional activity of cells.
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Crabbé A, Ledesma MA, Nickerson CA. Mimicking the host and its microenvironment in vitro for studying mucosal infections by Pseudomonas aeruginosa. Pathog Dis 2014; 71:1-19. [PMID: 24737619 DOI: 10.1111/2049-632x.12180] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/09/2014] [Accepted: 04/09/2014] [Indexed: 02/01/2023] Open
Abstract
Why is a healthy person protected from Pseudomonas aeruginosa infections, while individuals with cystic fibrosis or damaged epithelium are particularly susceptible to this opportunistic pathogen? To address this question, it is essential to thoroughly understand the dynamic interplay between the host microenvironment and P. aeruginosa. Therefore, using model systems that represent key aspects of human mucosal tissues in health and disease allows recreating in vivo host-pathogen interactions in a physiologically relevant manner. In this review, we discuss how factors of mucosal tissues, such as apical-basolateral polarity, junctional complexes, extracellular matrix proteins, mucus, multicellular complexity (including indigenous microbiota), and other physicochemical factors affect P. aeruginosa pathogenesis and are thus important to mimic in vitro. We highlight in vitro cell and tissue culture model systems of increasing complexity that have been used over the past 35 years to study the infectious disease process of P. aeruginosa, mainly focusing on lung models, and their respective advantages and limitations. Continued improvements of in vitro models based on our expanding knowledge of host microenvironmental factors that participate in P. aeruginosa pathogenesis will help advance fundamental understanding of pathogenic mechanisms and increase the translational potential of research findings from bench to the patient's bedside.
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Affiliation(s)
- Aurélie Crabbé
- The Biodesign Institute, Center for Infectious Diseases and Vaccinology, Arizona State University, Tempe, AZ, USA
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Vlachostergios PJ, Gioulbasanis I, Ghosh S, Tsatsanis C, Papatsibas G, Xyrafas A, Hatzidaki E, Vasiliou C, Kamposioras K, Agelaki S, Margioris AN, Nasi D, Georgoulias V, Papandreou CN. Predictive and prognostic value of LPS-stimulated cytokine secretion in metastatic non-small cell lung cancer. Clin Transl Oncol 2013; 15:903-9. [DOI: 10.1007/s12094-013-1021-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 02/12/2013] [Indexed: 01/11/2023]
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10
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Hattar K, Savai R, Subtil FSB, Wilhelm J, Schmall A, Lang DS, Goldmann T, Eul B, Dahlem G, Fink L, Schermuly RT, Banat GA, Sibelius U, Grimminger F, Vollmer E, Seeger W, Grandel U. Endotoxin induces proliferation of NSCLC in vitro and in vivo: role of COX-2 and EGFR activation. Cancer Immunol Immunother 2013; 62:309-20. [PMID: 22923191 PMCID: PMC3569588 DOI: 10.1007/s00262-012-1341-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 08/11/2012] [Indexed: 12/16/2022]
Abstract
Lung cancer is frequently complicated by pulmonary infections which may impair prognosis of this disease. Therefore, we investigated the effect of bacterial lipopolysaccharides (LPS) on tumor proliferation in vitro in the non-small cell lung cancer (NSCLC) cell line A549, ex vivo in a tissue culture model using human NSCLC specimens and in vivo in the A549 adenocarcinoma mouse model. LPS induced a time- and dose-dependent increase in proliferation of A549 cells as quantified by MTS activity and cell counting. In parallel, an increased expression of the proliferation marker Ki-67 and cyclooxygenase (COX)-2 was detected both in A549 cells and in ex vivo human NSCLC tissue. Large amounts of COX-2-derived prostaglandin (PG)E(2) were secreted from LPS-stimulated A549 cells. Pharmacological interventions revealed that the proliferative effect of LPS was dependent on CD14 and Toll-like receptor (TLR)4. Moreover, blocking of the epidermal growth factor receptor (EGFR) also decreased LPS-induced proliferation of A549 cells. Inhibition of COX-2 activity in A549 cells severely attenuated both PGE(2) release and proliferation in response to LPS. Synthesis of PGE(2) was also reduced by inhibiting CD14, TLR4 and EGFR in A549 cells. The proliferative effect of LPS on A549 cells could be reproduced in the A549 adenocarcinoma mouse model with enhancement of tumor growth and Ki-67 expression in implanted tumors. In summary, LPS induces proliferation of NSCLC cells in vitro, ex vivo in human NSCLC specimen and in vivo in a mouse model of NSCLC. Pulmonary infection may thus directly induce tumor progression in NSCLC.
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Affiliation(s)
- Katja Hattar
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Rajkumar Savai
- Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | | | - Jochen Wilhelm
- Department of Internal Medicine II, Biostatistics Group, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
| | - Anja Schmall
- Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Dagmar S. Lang
- Clinical and Experimental Pathology, Research Center Borstel, Borstel, Germany
| | - Torsten Goldmann
- Clinical and Experimental Pathology, Research Center Borstel, Borstel, Germany
| | - Bastian Eul
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Gabriele Dahlem
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Ludger Fink
- Department of Pathology, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
| | - Ralph-Theo Schermuly
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
- Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Gamal-Andre Banat
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Ulf Sibelius
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Friedrich Grimminger
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
| | - Ekkehard Vollmer
- Clinical and Experimental Pathology, Research Center Borstel, Borstel, Germany
| | - Werner Seeger
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Giessen, Germany
- Max-Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Ulrich Grandel
- Department of Internal Medicine IV/V, University of Giessen and Marburg Lung Center (UGMLC), Klinikstrasse 33, Giessen, Germany
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Min TJ, Park SH, Ji YH, Lee YS, Kim TW, Kim JH, Kim WY, Park YC. Morphine attenuates endothelial cell adhesion molecules induced by the supernatant of LPS-stimulated colon cancer cells. J Korean Med Sci 2011; 26:747-52. [PMID: 21655059 PMCID: PMC3102867 DOI: 10.3346/jkms.2011.26.6.747] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 04/04/2011] [Indexed: 11/23/2022] Open
Abstract
A large reservoir of bacterial lipopolysaccharide (LPS) is available in the colon and this could promote colon cancer metastasis by enhancing tumor cell adhesion, intravasation, and extravasation. Furthermore, adhesion molecules like ICAM-1, VCAM-1, and E-selectin play important roles in the adhesion of tumor cells to endothelium. This study was designed to determine whether morphine can attenuate the expressions of adhesion molecules up-regulated by the supernatant of LPS-stimulated HCT 116 colon cancer cells (LPS-Sup). In this study, we divided to three groups by cell-growth medium of human umbilical vascular endothelial cells (HUVECs): the control group was incubated in growth factor-free endothelial medium, the Sup group was incubated in the supernatant of HCT 116 cells (Sup), and the LPS-Sup group was incubated in LPS-Sup. To observe effect of morphine to the adhesion molecules expressions in the LPS-Sup group, we co-treated morphine with LPS or added it to LPS-Sup. Adhesion molecule expressions on HUVECs in all three groups were measured during incubation period. Consquentially, ICAM-1, VCAM-1, and E-selectin expressions on HUVECs were significantly lower when morphine was co-treated with LPS than not co-treated. Thus, we suggest that morphine affects the expressions of adhesion molecules primarily by attenuating LPS stimuli on tumor cells.
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Affiliation(s)
- Too Jae Min
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Sang-Hee Park
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Yi-Hwa Ji
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Korea
| | - Yoon-Sook Lee
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Tae Woo Kim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Korea
| | - Jae Hwan Kim
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Woon-Young Kim
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
| | - Young-Cheol Park
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea
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