1
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Liu LQ, Wang ZH, Yao HY. Hepatocyte growth factor can guide treatment of Mycoplasma pneumoniae pneumonia in children. Exp Ther Med 2020; 19:3432-3438. [PMID: 32266043 DOI: 10.3892/etm.2020.8596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 02/02/2020] [Indexed: 12/30/2022] Open
Abstract
The objective of the present study was to explore the role of hepatocyte growth factor (HGF) in directing treatment of Mycoplasma pneumoniae pneumonia (MP). Serum levels of HGF were assessed using ELISA in 65 pediatric patients with MP, 42 with bacterial pneumonia and 30 healthy controls. Serum levels of C-reactive protein (CRP), the standard guide for MP treatment, were also examined in severe and non-severe MP. The sensitivity and specificity of HGF and CRP in assessing the outcome of azithromycin treatment of MP were compared using receiver operating characteristic curves. HGF levels were elevated in MP and bacterial pneumonia patients compared with healthy controls. HGF levels were also significantly higher in severe MP than in non-severe MP. HGF showed higher sensitivity and specificity than CRP in assessing outcomes of azithromycin treatment of MP. The results of the present study indicated that HGF may be used to detect severe MP and to direct its management. Furthermore, HGF may be better predictive marker to assess the effectiveness of azithromycin treatment of MP than CRP.
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Affiliation(s)
- Lun Qin Liu
- Department of Inspection, Infectious Diseases Hospital of Jinan, Jinan, Shandong 250021, P.R. China
| | - Zhi Hua Wang
- Department of Pediatrics, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin 300100, P.R. China
| | - Hai Yun Yao
- Department of Inspection, Jinan Blood Center, Jinan, Shandong 250001, P.R. China
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2
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Kinoshita T, Goto T. Molecular Mechanisms of Pulmonary Fibrogenesis and Its Progression to Lung Cancer: A Review. Int J Mol Sci 2019; 20:ijms20061461. [PMID: 30909462 PMCID: PMC6471841 DOI: 10.3390/ijms20061461] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/11/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is defined as a specific form of chronic, progressive fibrosing interstitial pneumonia of unknown cause, occurring primarily in older adults, and limited to the lungs. Despite the increasing research interest in the pathogenesis of IPF, unfavorable survival rates remain associated with this condition. Recently, novel therapeutic agents have been shown to control the progression of IPF. However, these drugs do not improve lung function and have not been tested prospectively in patients with IPF and coexisting lung cancer, which is a common comorbidity of IPF. Optimal management of patients with IPF and lung cancer requires understanding of pathogenic mechanisms and molecular pathways that are common to both diseases. This review article reflects the current state of knowledge regarding the pathogenesis of pulmonary fibrosis and summarizes the pathways that are common to IPF and lung cancer by focusing on the molecular mechanisms.
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Affiliation(s)
- Tomonari Kinoshita
- Division of General Thoracic Surgery, Department of Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 1608582, Japan.
| | - Taichiro Goto
- Lung Cancer and Respiratory Disease Center, Yamanashi Central Hospital, Kofu, Yamanashi 4008506, Japan.
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3
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Miglio U, Berrino E, Panero M, Ferrero G, Coscujuela Tarrero L, Miano V, Dell'Aglio C, Sarotto I, Annaratone L, Marchiò C, Comoglio PM, De Bortoli M, Pasini B, Venesio T, Sapino A. The expression of LINE1-MET chimeric transcript identifies a subgroup of aggressive breast cancers. Int J Cancer 2018; 143:2838-2848. [PMID: 30144023 DOI: 10.1002/ijc.31831] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 07/17/2018] [Accepted: 08/15/2018] [Indexed: 01/03/2023]
Abstract
Demethylation of the long interspersed nuclear element (LINE-1; L1) antisense promoter can result in transcription of neighboring sequences as for the L1-MET transcript produced by the L1 placed in the second intron of MET. To define the role of L1-MET, we investigated the sequence and the transcription of L1-MET in vitro models and heterogeneous breast cancers, previously reported to show other L1-derived transcripts. L1-MET expressing cell lines were initially identified in silico and investigated for L1-MET promoter methylation, cDNA sequence and cell fraction mRNA. The transcriptional level of L1-MET and MET were then evaluated in breast specimens, including 9 cancer cell lines, 41 carcinomas of different subtypes, and 11 normal tissues. In addition to a L1-MET transcript ending at MET exon 21, six novel L1-MET splice variants were identified. Normal breast tissues were negative for the L1-MET expression, whereas the triple-negative breast cancer (TNBC) and the high-grade carcinomas were enriched with the L1-MET mRNA (p = 0.005 and p = 0.018, respectively). In cancer cells and tissues the L1-MET expression was associated with its promoter hypomethylation (ρ = -0.8 and -0.9, respectively). No correlation was found between L1-MET and MET mRNA although L1-MET expressing tumors with higher L1-MET/MET ratio were negative for the MET protein expression (p = 0.006). Besides providing the first identification and detailed description of L1-MET in breast cancer, we clearly demonstrate that higher levels of this transcript specifically recognize a subset of more aggressive carcinomas, mainly TNBC. We suggest the possible evaluation of L1-MET in the challenging diagnosis of early TNBCs.
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Affiliation(s)
- Umberto Miglio
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Enrico Berrino
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Mara Panero
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Giulio Ferrero
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy.,Department of Computer Science, University of Turin, Turin, Italy
| | | | - Valentina Miano
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Carmine Dell'Aglio
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Ivana Sarotto
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Laura Annaratone
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Caterina Marchiò
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy.,Department of Medical Sciences, University of Turin, Turin, Italy
| | - Paolo M Comoglio
- Molecular Therapeutics and Exploratory Research Laboratory, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Michele De Bortoli
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Barbara Pasini
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Tiziana Venesio
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Anna Sapino
- Unit of Pathology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy.,Department of Medical Sciences, University of Turin, Turin, Italy
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4
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Sugiura T, Kawaguchi Y, Soejima M, Katsumata Y, Gono T, Baba S, Kawamoto M, Murakawa Y, Yamanaka H, Hara M. Increased HGF and c-Met in muscle tissues of polymyositis and dermatomyositis patients: Beneficial roles of HGF in muscle regeneration. Clin Immunol 2010; 136:387-99. [DOI: 10.1016/j.clim.2010.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 04/19/2010] [Accepted: 04/20/2010] [Indexed: 11/29/2022]
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5
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Angelucci C, Iacopino F, Ferracuti S, Urbano R, Sica G. Recombinant Human IFN-βAffects Androgen Receptor Level, Neuroendocrine Differentiation, Cell Adhesion, and Motility in Prostate Cancer Cells. J Interferon Cytokine Res 2007; 27:643-52. [PMID: 17784816 DOI: 10.1089/jir.2006.0120] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
We provide evidence that recombinant human interferon-beta (rHuIFN-beta) is able to increase androgen receptor (AR) expression, interfere with the acquisition of a neuroendocrine (NE) phenotype, and improve adhesion potential of androgen-insensitive prostate cancer cells (PC-3). The effect of rHuIFN-beta (10-1000 IU/mL) on AR, chromogranin A (CgA), E-cadherin (E-cad), N-cadherin (N-cad), and c-met levels was investigated by Western blotting after 48, 96, and 144 h. In agreement with our previous results, rHuIFN-beta (10-1000 IU/mL) induced a dramatic increase in AR (up to 5.3-fold, p < 0.001) that was already evident with the lowest cytokine concentration (10 IU/mL). A reduction in CgA levels (up to 45%, p < 0.002) was produced by 100 and 1000 IU/mL after 48-144 h. E-cad upregulation (up to 90%, p < 0.05) was observed starting from 96 h of treatment with 100 and 1000 IU/mL rHuIFN-beta and persisted until 144 h. An rHuIFN-beta-dependent reduction occurred in N-cad and c-met signal after a 48-96 h of treatment. This effect was particularly strong after 144 h of exposure to 1000 IU/mL rHuIFN-beta (81.5%, N-cad; 58%, c-met) (p < 0.002). Reverse transcription-PCR (RT-PCR) analysis of c-met expression demonstrated that the IFN-induced c-met downregulation mostly occurs at the transcriptional level (reduction up to nearly 50%, p < 0.000). Together, these results indicate that rHuIFN-beta may reduce the motility and invasiveness of poorly differentiated prostate cancer cells and interfere with the acquisition of an NE phenotype, often characterized by a low AR level.
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Affiliation(s)
- C Angelucci
- Istituto di Istologia ed Embriologia, Facoltà di Medicina e Chirurgia, Università Cattolica del Sacro Cuore di Roma, 1 Largo Francesco Vito, 00168 Rome, Italy
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Horowitz JC, Thannickal VJ. Epithelial-mesenchymal interactions in pulmonary fibrosis. Semin Respir Crit Care Med 2007; 27:600-12. [PMID: 17195137 PMCID: PMC2225581 DOI: 10.1055/s-2006-957332] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Pulmonary fibrosis represents the sequelae of a variety of acute and chronic lung injuries of known and unknown etiologies. Tissue specimens obtained from patients with pulmonary fibrosis, regardless of the etiology, consistently show evidence of an ongoing wound-repair response. Epithelial-mesenchymal interactions have critical roles in normal lung development, tissue repair processes, and fibrosis. Current hypotheses propose that dysregulated function of, and impaired communication between, epithelial and mesenchymal cells prevent resolution of the wound-repair response and contribute to the pathobiology of pulmonary fibrosis. This hypothesis is supported by abundant evidence from patients, animal models, and cell-culture studies demonstrating abnormalities in epithelial cell and mesenchymal cell activities including proliferation, differentiation, and survival. This article reviews the aberrant epithelial and mesenchymal cellular phenotypes found in the context of pulmonary fibrosis and discusses the mechanisms that perpetuate these cellular phenotypes.
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Affiliation(s)
- Jeffrey C Horowitz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA.
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7
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Choi JH, Lee SH, Lee HM, Lee SH, Jung HH, Choi J, Lim HW, Lee SW, Kang SM. Expression and localization of hepatocyte growth factor and its receptor c-Met in inverted papillomas. Acta Otolaryngol 2006; 126:724-9. [PMID: 16803712 DOI: 10.1080/00016480500437351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
CONCLUSIONS The results suggest that elevated c-Met expression in combination with the co-expression of hepatocyte growth factor (HGF) in the epithelial cells of inverted papilloma may proliferate the epithelial cells of inverted papilloma. OBJECTIVES HGF and its receptor, c-Met, have been identified in a variety of neoplastic and normal tissue types, implicating these factors in tissue regeneration and tumor progression. We investigated the expression and distribution of HGF and c-Met in normal nasal mucosa and inverted papilloma, to evaluate the possible influence of HGF and c-Met on the development of inverted papilloma. MATERIALS AND METHODS Normal inferior turbinate mucosa and inverted papilloma were examined for expression of HGF and c-Met using RT-PCR, immunohistochemistry and Western blot analysis. RESULTS Using immunohistochemistry, moderate to high levels of HGF and c-Met protein were localized in epithelial cells in inverted papillomas tested in the present study. In normal turbinate mucosa immunopositive HGF was detected in the submucosal glands where faint staining was found. However, c-Met was noted in the epithelial cells and submucosal glands of normal turbinate mucosa. RT-PCR and Western blot analysis showed that the expression levels of HGF and c-Met were increased in inverted papilloma in comparison with the normal turbinate mucosa.
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Affiliation(s)
- Ji Hoon Choi
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, Korea
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8
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Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive, and usually fatal pulmonary disease for which there are no proven drug therapies. Anti-inflammatory and immunosuppressive agents have been largely ineffective. The precise relationship of IPF to other idiopathic interstitial pneumonias (IIPs) is not known, despite the observation that different histopathologic patterns of IIP may coexist in the same patient. We propose that these different histopathologic 'reaction' patterns may be determined by complex interactions between host and environmental factors that alter the local alveolar milieu. Recent paradigms in IPF pathogenesis have focused on dysregulated epithelial-mesenchymal interactions, an imbalance in T(H)1/T(H)2 cytokine profile and potential roles for aberrant angiogenesis. In this review, we discuss these evolving concepts in disease pathogenesis and emerging therapies designed to target pro-fibrogenic pathways in IPF.
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Affiliation(s)
| | - Victor J. Thannickal
- Address correspondence to: Victor J. Thannickal, M.D. Division of Pulmonary and Critical Care Medicine University of Michigan Medical Center 6301 MSRB III 1150 W. Medical Center Dr. Ann Arbor, Michigan 48109 United States of America Phone: 734−936−9371 Fax: 734−764−4556 e-mail:
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9
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Ito W, Kanehiro A, Matsumoto K, Hirano A, Ono K, Maruyama H, Kataoka M, Nakamura T, Gelfand EW, Tanimoto M. Hepatocyte growth factor attenuates airway hyperresponsiveness, inflammation, and remodeling. Am J Respir Cell Mol Biol 2004; 32:268-80. [PMID: 15626778 DOI: 10.1165/rcmb.2004-0058oc] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Hepatocyte growth factor (HGF) is known to influence a number of cell types and their production of regulatory cytokines. We investigated the potential of recombinant HGF to regulate not only the development of allergic airway inflammation and airway hyperresponsiveness (AHR), but also airway remodeling in a murine model. Administration of exogenous HGF after sensitization but during ovalbumin challenge significantly prevented AHR, as well as eosinophil and lymphocyte accumulation in the airways; interleukin (IL)-4, IL-5, and IL-13 levels in bronchoalveolar lavage (BAL) fluid were also significantly reduced. Further, treatment with HGF significantly suppressed transforming growth factor-beta (TGF-beta), platelet-derived growth factor, and nerve growth factor levels in BAL fluid. The expression of TGF-beta, the development of goblet cell hyperplasia and subepithelial collagenization, and the increases in contractile elements in the lung were also reduced by recombinant HGF. Neutralization of endogenous HGF resulted in increased AHR as well as the number of eosinophils, levels of Th2 cytokines (IL-4, IL-5, and IL-13) and TGF-beta in BAL fluid. These data indicate that HGF may play an important role in the regulation of allergic airway inflammation, hyperresponsiveness, and remodeling.
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Affiliation(s)
- Wataru Ito
- Second Department of Internal Medicine, Okayama University Medical School, 2-5-1 Shikata-cho, Okayama 700-8558, Japan
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10
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Lesur O, Brisebois M, Thibodeau A, Chagnon F, Lane D, Füllöp T. Role of IFN-gamma and IL-2 in rat lung epithelial cell migration and apoptosis after oxidant injury. Am J Physiol Lung Cell Mol Physiol 2004; 286:L4-L14. [PMID: 12922984 DOI: 10.1152/ajplung.00367.2002] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In the present study, IFN-gamma exposure to primary cultures of rat type II epithelial cells (TIIP) upregulated membrane expression of the common gamma-chain of the IL-2 receptor (approximately 2.5- to 4-fold increase) and redistributed receptor affinity in TIIP, as assessed by Western blot, cell, and tissue histochemistry and Scatchard analysis. As for restitution processes of the lung epithelium, functionality of IL-2R on TIIP was conditional to IFN-gamma exposure: 1) IFN-gamma priming promoted a fivefold increase of IL-2-driven TIIP locomotion (P < 0.05 vs. control at 100 U/ml) and 2) IFN-gamma coincubation with IL-2 reduced bleomycin-induced TIIP apoptosis in vitro by 25% (caspase-3 activity) and by approximately 70% (TdT-mediated dUTP nick end labeling/4',6'-diamidino-2-phenylindole assay) as well as in vivo by approximately 90% (caspase-3 activity; P < 0.05 vs. control). Sustained p42/44 extracellular signal-regulated kinase activity played a protective role in this process, whereas specific inhibition by PD-98059 (50 microM) significantly reversed bleomycin-induced TIIP apoptosis (P < 0.05 vs. control). From these in vitro and in vivo data, it is proposed that combinations of IFN-gamma and IL-2 can drive repair activity of TIIP by stimulating migration and preventing programmed cell death, both of which are speculated to be very fast restitution events after oxidant-induced acute lung injury.
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Affiliation(s)
- Olivier Lesur
- Groupe de Recherche en Physiopathologie Respiratoire, and Soins Intensif Médicaux, Université de Sherbrooke, Québec, Canada, J1H 5N4.
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11
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Ding S, Merkulova-Rainon T, Han ZC, Tobelem G. HGF receptor up-regulation contributes to the angiogenic phenotype of human endothelial cells and promotes angiogenesis in vitro. Blood 2003; 101:4816-22. [PMID: 12595309 DOI: 10.1182/blood-2002-06-1731] [Citation(s) in RCA: 139] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hepatocyte growth factor (HGF) is a mesenchyme-derived pleiotropic growth factor and a powerful stimulator of angiogenesis, which acts on cells by binding to the c-met receptor. The exact role of the endogenous HGF/c-met system in one or more steps of the angiogenic process is not completely understood. To contribute to this question we used immunocytochemical analysis, Western blotting, and reverse transcription-polymerase chain reaction to study the expression of c-met in endothelial cells cultured in different growth conditions. We found that c-met is not colocalized with vascular endothelial (VE)-cadherin in cell-cell junctions. c-met and VE-cadherin were shown to be inversely regulated by cell density, at both the protein and the mRNA levels. We established that c-met is up-regulated during the in vitro recapitulation of several steps of angiogenesis. The c-met expression was increased shortly after switching to angiogenic growth conditions and remained high during the very first steps of angiogenesis, including cell migration, and cell proliferation. The endothelial cells in which the expression of c-met was up-regulated were more responsive to HGF and exhibited a higher rate of morphogenesis. Moreover, the antibody directed against the extracellular domain of the c-met inhibited angiogenesis in vitro. Our results suggest that c-met is a marker of angiogenic phenotype for endothelial cells and represents an attractive target for the development of new antiangiogenic therapies.
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Affiliation(s)
- Shunli Ding
- Institut des Vaisseaux et du Sang, Centre de Recherche de l'Association Claude Bernard, Paris, France
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12
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Tracey L, Villuendas R, Ortiz P, Dopazo A, Spiteri I, Lombardia L, Rodríguez-Peralto JL, Fernández-Herrera J, Hernández A, Fraga J, Dominguez O, Herrero J, Alonso MA, Dopazo J, Piris MA. Identification of genes involved in resistance to interferon-alpha in cutaneous T-cell lymphoma. THE AMERICAN JOURNAL OF PATHOLOGY 2002; 161:1825-37. [PMID: 12414529 PMCID: PMC1850769 DOI: 10.1016/s0002-9440(10)64459-8] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Interferon-alpha therapy has been shown to be active in the treatment of mycosis fungoides although the individual response to this therapy is unpredictable and dependent on essentially unknown factors. In an effort to better understand the molecular mechanisms of interferon-alpha resistance we have developed an interferon-alpha resistant variant from a sensitive cutaneous T-cell lymphoma cell line. We have performed expression analysis to detect genes differentially expressed between both variants using a cDNA microarray including 6386 cancer-implicated genes. The experiments showed that resistance to interferon-alpha is consistently associated with changes in the expression of a set of 39 genes, involved in signal transduction, apoptosis, transcription regulation, and cell growth. Additional studies performed confirm that STAT1 and STAT3 expression and interferon-alpha induction and activation are not altered between both variants. The gene MAL, highly overexpressed by resistant cells, was also found to be expressed by tumoral cells in a series of cutaneous T-cell lymphoma patients treated with interferon-alpha and/or photochemotherapy. MAL expression was associated with longer time to complete remission. Time-course experiments of the sensitive and resistant cells showed a differential expression of a subset of genes involved in interferon-response (1 to 4 hours), cell growth and apoptosis (24 to 48 hours.), and signal transduction.
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MESH Headings
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Carrier Proteins/biosynthesis
- Carrier Proteins/genetics
- DNA-Binding Proteins/biosynthesis
- DNA-Binding Proteins/genetics
- Drug Resistance, Neoplasm
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Interferon-alpha/pharmacology
- Interferon-alpha/therapeutic use
- Kinetics
- Lymphoma, T-Cell, Cutaneous/diagnosis
- Lymphoma, T-Cell, Cutaneous/drug therapy
- Lymphoma, T-Cell, Cutaneous/genetics
- Lymphoma, T-Cell, Cutaneous/metabolism
- Membrane Glycoproteins
- Models, Biological
- Oligonucleotide Array Sequence Analysis
- RNA, Neoplasm/biosynthesis
- Receptors, Interleukin-1
- Reproducibility of Results
- STAT1 Transcription Factor
- STAT3 Transcription Factor
- Trans-Activators/biosynthesis
- Trans-Activators/genetics
- Tumor Cells, Cultured
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Affiliation(s)
- Lorraine Tracey
- Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
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13
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To Y, Dohi M, Matsumoto K, Tanaka R, Sato A, Nakagome K, Nakamura T, Yamamoto K. A two-way interaction between hepatocyte growth factor and interleukin-6 in tissue invasion of lung cancer cell line. Am J Respir Cell Mol Biol 2002; 27:220-6. [PMID: 12151314 DOI: 10.1165/ajrcmb.27.2.4804] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Although both hepatocyte growth factor (HGF) and interleukin (IL)-6 play important roles in invasion of cancer cells, interaction between these two critical factors has not been well elucidated. In the present study we demonstrated a two-way interaction between HGF and IL-6 in in vitro invasion of a lung cancer cell line. A549 lung adenocarcinoma cells were stimulated with IL-6, and this treatment induced an upregulation of c-Met/HGF receptor mRNA expression in the cells. In addition, IL-6 enhanced the HGF-induced in vitro cell invasion. This effect was abolished by pretreatment of the cells with either anti-IL-6 neutralizing antibody or with anti-c-Met/HGF receptor blocking antibody. We also found that HGF upregulated the expression of IL-6 receptor mRNA in the same cell line, and that this upregulation enhanced the IL-6-induced cell invasion. Finally, costimulation with HGF and IL-6 showed an additive effect on invasion, and this effect was mediated by production of matrix metalloproteinase (MMP)-2 and MMP-9. These results suggest that HGF and IL-6 upregulate each other's receptors, and thus would cooperatively enhance tissue invasion. They also suggest an "autocrine circuit" among cytokines and growth factors in certain cancer cells which functions to accelerate their biologic activities such as metastatic property.
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Affiliation(s)
- Yasuo To
- Pulmonary Section, Department of Allergy and Rheumatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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14
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Crestani B, Dehoux M, Hayem G, Leçon V, Hochedez F, Marchal J, Jaffré S, Stern JB, Durand G, Valeyre D, Fournier M, Aubier M. Differential role of neutrophils and alveolar macrophages in hepatocyte growth factor production in pulmonary fibrosis. J Transl Med 2002; 82:1015-22. [PMID: 12177240 DOI: 10.1097/01.lab.0000024361.92500.19] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Neutrophils may participate in the development of lung fibrosis. Hepatocyte growth factor (HGF), a growth factor for type II pneumocytes, is produced by neutrophils. We measured the production of HGF by blood and alveolar neutrophils from patients with either idiopathic pulmonary fibrosis (n = 11) or connective tissue disease-associated pulmonary fibrosis (n = 10) and from control patients (n = 10). HGF secretion by alveolar macrophages and the expression of the HGF receptor by alveolar epithelial cells in pulmonary fibrosis were also evaluated. HGF was not detected in bronchoalveolar lavage fluid from controls. HGF concentration in the epithelial lining fluid from patients was 4-fold higher than in plasma, suggesting a local production within the alveolar space. Alveolar neutrophils secreted HGF in vitro. Basal HGF secretion by alveolar neutrophils positively correlated with HGF in the epithelial lining fluid (p = 0.05, rho = 0.582). HGF secretion by alveolar neutrophils could not be further stimulated with lipopolysaccharide, whereas HGF secretion by blood neutrophils doubled with lipopolysaccharide. Alveolar macrophages did not secrete HGF in vitro. The expression of the HGF receptor was greatly increased in the fibrotic lung, supporting the local function of HGF secreted by neutrophils. We conclude that neutrophils are a source of HGF in patients with pulmonary fibrosis.
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15
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Liu F, Schaphorst KL, Verin AD, Jacobs K, Birukova A, Day RM, Bogatcheva N, Bottaro DP, Garcia JGN. Hepatocyte growth factor enhances endothelial cell barrier function and cortical cytoskeletal rearrangement: potential role of glycogen synthase kinase-3beta. FASEB J 2002; 16:950-62. [PMID: 12087056 DOI: 10.1096/fj.01-0870com] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The stabilization of endothelial cell (EC) barrier function within newly formed capillaries is a critical feature of angiogenesis. We examined human lung EC barrier regulation elicited by hepatocyte growth factor (HGF), a recognized angiogenic factor and EC chemoattractant. HGF rapidly and dose-dependently elevated transendothelial electrical resistance (TER) of EC monolayers (>50% increase at 100 ng/ml), with immunofluorescence microscopic evidence of both cytoplasmic actin stress fiber dissolution and strong augmentation of the cortical actin ring. HGF rapidly stimulated phosphatidylinositol 3'-kinase, ERK, p38 mitogen-activated protein kinase, and protein kinase C activities. Pharmacological inhibitor studies demonstrated each pathway to be intimately involved in HGF-induced increases in TER, cortical actin thickening, and phosphorylation of the Ser/Thr glycogen synthase kinase-3beta (GSK-3beta), a potential target for the HGF barrier-promoting response. GSK-3beta phosphorylation was strongly correlated with reductions in both HGF-induced TER and enhanced beta-catenin immunoreactivity observed at cell-cell junctions. Our data suggest a model in which HGF-mediated EC cytoskeletal rearrangement and barrier enhancement depend critically on the activation of a complex kinase cascade that converges at GSK-3beta to increase the availability of beta-catenin, thereby enhancing endothelial junctional integrity and vascular barrier function.
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Affiliation(s)
- Feng Liu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Elia G, Ren Y, Lorenzoni P, Zarnegar R, Burger MM, Rusciano D. Mechanisms regulating c-met overexpression in liver-metastatic B16-LS9 melanoma cells. J Cell Biochem 2001; 81:477-87. [PMID: 11255230 DOI: 10.1002/1097-4644(20010601)81:3<477::aid-jcb1061>3.0.co;2-b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Liver selected B16-LS9 melanoma cells show a dramatic overexpression of the proto-oncogene c-met, the cellular receptor for hepatocyte growth factor/scatter factor. As a consequence, c-met becomes constitutively active, and the cells become more responsive to hepatocyte growth factor stimulation. We have investigated the molecular mechanisms regulating c-met expression in both the parental line B16-F1, which has low expression levels, and the liver-specific B16-LS9, overexpressing c-met. Overexpression is observed at the protein and mRNA levels, however without further evidence of gene amplification or rearrangement. c-met promoter activity was higher in B16-LS9 than B16-F1 cells, and also a nuclear run-off showed higher transcription levels in B16-LS9 cells. Moreover, we found that c-met mRNA had a longer half-life in B16-LS9 cells, thus indicating also the involvement of post-transcriptional regulation mechanisms. Finally, we found evidence that autonomous activation of the melanocortin receptor-1 (MCR-1) is at least partially responsible for c-met upregulation in B16-LS9 cells, since treatment of the cells with a potent MSH antagonist (the agouti peptide) has strong down-regulatory effects.
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Affiliation(s)
- G Elia
- Friedrich Miescher Institute, Novartis Research Foundation, Maulbeerstrasse 66, CH-4058 Basel, Switzerland
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Gao C, Kennedy S, Ponder KP. Lipopolysaccharide potentiates the effect of hepatocyte growth factor upon replication in lung, thyroid, spleen, and colon in rats in vivo. Mol Ther 2001; 3:462-75. [PMID: 11319906 DOI: 10.1006/mthe.2001.0265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Induction of replication may potentiate in vivo gene therapy, as some viral vectors only transduce dividing cells. Hepatocyte growth factor (HGF) increases the percentage of replicating hepatocytes to 18-fold that in normal rats, and lipopolysaccharide (LPS) modestly potentiates this effect. In this study, the effect of iv HGF upon replication in other organs was determined. HGF at 10 mg/kg resulted in replication that was < or =3-fold that of normal rats in alveolar and proximal renal tubular cells. HGF alone had no effect upon replication of epithelial cells from the bronchi, thyroid, pancreas, or colon or upon cells from the muscle, pancreatic islets, spleen, blood vessels, or thymus. HGF and LPS at 5 mg/kg resulted in replication that was 9-fold that of normal rats in alveolar cells, 25-fold in bronchial epithelial cells, 4-fold in thyroid epithelial cells, 1.5-fold in the red pulp of the spleen, and 2-fold in colonic epithelial cells. The synergistic effect may be due to the fact that LPS upregulated the HGF receptor c-met in thyroid, spleen, and colon. We conclude that iv administration of HGF alone is relatively specific for inducing hepatocyte replication and would allow selective gene transfer into the liver.
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Affiliation(s)
- C Gao
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA
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