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Leek C, Cantu A, Sonti S, Gutierrez MC, Eldredge L, Sajti E, Xu HN, Lingappan K. Role of sex as a biological variable in neonatal alveolar macrophages. Redox Biol 2024; 75:103296. [PMID: 39098263 PMCID: PMC11345582 DOI: 10.1016/j.redox.2024.103296] [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: 05/29/2024] [Revised: 07/09/2024] [Accepted: 07/31/2024] [Indexed: 08/06/2024] Open
Abstract
The lung macrophages play a crucial role in health and disease. Sexual dimorphism significantly impacts the phenotype and function of tissue-resident macrophages. The primary mechanisms responsible for sexually dimorphic outcomes in bronchopulmonary dysplasia (BPD) remain unidentified. We tested the hypothesis that biological sex plays a crucial role in the transcriptional state of alveolar macrophages, using neonatal murine hyperoxia-induced lung injury as a relevant model for human BPD. The effects of neonatal hyperoxia exposure (95 % FiO2, PND1-5: saccular stage) on the lung myeloid cells acutely after injury and during normoxic recovery were measured. Alveolar macrophages (AM) from room air- and hyperoxia exposed from male and female neonatal murine lungs were subjected to bulk-RNA Sequencing. AMs are significantly depleted in the hyperoxia-exposed lung acutely after injury, with subsequent recovery in both sexes. The transcriptome of the alveolar macrophages is impacted by neonatal hyperoxia exposure and by sex as a biological variable. Pathways related to DNA damage and interferon-signaling were positively enriched in female AMs. Metabolic pathways related to glucose and carbohydrate metabolism were positively enriched in the male AMs, while oxidative phosphorylation was negatively enriched. These pathways were shared with monocytes and airway macrophages from intubated male and female human premature neonates.
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Affiliation(s)
- Connor Leek
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, PA, USA
| | - Abiud Cantu
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, PA, USA
| | - Shilpa Sonti
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, PA, USA
| | - Manuel Cantu Gutierrez
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, PA, USA
| | - Laurie Eldredge
- Department of Pediatrics, Division of Pediatric Pulmonology, University of Washington School of Medicine, Seattle Children's Hospital, WA, USA
| | - Eniko Sajti
- Department of Pediatrics, Division of Neonatology, University of California San Diego, San Diego, CA, USA
| | - He N Xu
- Britton Chance Laboratory of Redox Imaging, Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Krithika Lingappan
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Philadelphia, University of Pennsylvania, PA, USA.
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2
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Jia Q, Ouyang Y, Yang Y, Yao S, Chen X, Hu Z. Osteopontin: A Novel Therapeutic Target for Respiratory Diseases. Lung 2024; 202:25-39. [PMID: 38060060 DOI: 10.1007/s00408-023-00665-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 11/22/2023] [Indexed: 12/08/2023]
Abstract
Osteopontin (OPN) is a multifunctional phosphorylated protein that is involved in physiological and pathological events. Emerging evidence suggests that OPN also plays a critical role in the pathogenesis of respiratory diseases. OPN can be produced and secreted by various cell types in lungs and overexpression of OPN has been found in acute lung injury/acute respiratory distress syndrome (ALI/ARDS), pulmonary hypertension (PH), pulmonary fibrosis diseases, lung cancer, lung infection, chronic obstructive pulmonary disease (COPD), and asthma. OPN exerts diverse effects on the inflammatory response, immune cell activation, fibrosis and tissue remodeling, and tumorigenesis of these respiratory diseases, and genetic and pharmacological moudulation of OPN exerts therapeutic effects in the treatment of respiratory diseases. In this review, we summarize the recent evidence of multifaceted roles and underlying mechanisms of OPN in these respiratory diseases, and targeting OPN appears to be a potential therapeutic intervention for these diseases.
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Affiliation(s)
- Qi Jia
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China
| | - Yeling Ouyang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China
| | - Yiyi Yang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China
| | - Shanglong Yao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China
| | - Xiangdong Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China
| | - Zhiqiang Hu
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Key Laboratory of Anesthesiology and Resuscitation, Huazhong University of Science and Technology, Ministry of Education, Wuhan, 430022, China.
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3
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Al-Mudares F, Cantu Gutierrez M, Cantu A, Jiang W, Wang L, Dong X, Moorthy B, Sajti E, Lingappan K. Loss of growth differentiation factor 15 exacerbates lung injury in neonatal mice. Am J Physiol Lung Cell Mol Physiol 2023; 325:L314-L326. [PMID: 37368978 PMCID: PMC10625832 DOI: 10.1152/ajplung.00086.2023] [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: 03/21/2023] [Revised: 05/11/2023] [Accepted: 06/21/2023] [Indexed: 06/29/2023] Open
Abstract
Growth differentiation factor 15 (GDF15) is a divergent member of the transforming growth factor-β (TGF-β) superfamily, and its expression increases under various stress conditions, including inflammation, hyperoxia, and senescence. GDF15 expression is increased in neonatal murine bronchopulmonary dysplasia (BPD) models, and GDF15 loss exacerbates oxidative stress and decreases cellular viability in vitro. Our overall hypothesis is that the loss of GDF15 will exacerbate hyperoxic lung injury in the neonatal lung in vivo. We exposed neonatal Gdf15-/- mice and wild-type (WT) controls on a similar background to room air or hyperoxia (95% [Formula: see text]) for 5 days after birth. The mice were euthanized on postnatal day 21 (PND 21). Gdf15-/- mice had higher mortality and lower body weight than WT mice after exposure to hyperoxia. Hyperoxia exposure adversely impacted alveolarization and lung vascular development, with a greater impact in Gdf15-/- mice. Interestingly, Gdf15-/- mice showed lower macrophage count in the lungs compared with WT mice both under room air and after exposure to hyperoxia. Analysis of the lung transcriptome revealed marked divergence in gene expression and enriched biological pathways in WT and Gdf15-/- mice and differed markedly by biological sex. Notably, pathways related to macrophage activation and myeloid cell homeostasis were negatively enriched in Gdf15-/- mice. Loss of Gdf15 exacerbates mortality, lung injury, and the phenotype of the arrest of alveolarization in the developing lung with loss of female-sex advantage in Gdf15-/- mice.NEW & NOTEWORTHY We show for the first time that loss of Gdf15 exacerbates mortality, lung injury, and the phenotype of the arrest of alveolarization in the developing lung with loss of female-sex advantage in Gdf15-/- mice. We also highlight the distinct pulmonary transcriptomic response in the Gdf15-/- lung including pathways related to macrophage recruitment and activation.
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Affiliation(s)
- Faeq Al-Mudares
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, United States
| | - Manuel Cantu Gutierrez
- Divsion of Neonatology, Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania, United States
| | - Abiud Cantu
- Divsion of Neonatology, Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania, United States
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, United States
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, United States
| | - Xiaoyu Dong
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, United States
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas, United States
| | - Eniko Sajti
- Division of Neonatology, Department of Pediatrics, University of California, San Diego, California, United States
| | - Krithika Lingappan
- Divsion of Neonatology, Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania, United States
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Lima RRM, Lima JVA, Ribeiro JFF, Nascimento JB, Oliveira WF, Cabral Filho PE, Fontes A. Emerging biomedical tools for biomarkers detection and diagnostics in schistosomiasis. Talanta 2023; 265:124900. [PMID: 37423177 DOI: 10.1016/j.talanta.2023.124900] [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: 03/13/2023] [Revised: 06/21/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
Schistosomiasis is a neglected disease that strikes many people from tropical and subtropical countries where there are not satisfactory sanitation and wide access to clean water. Schistosoma spp., the causative agents of schistosomiasis, exhibit a quite complex life cycle that involves two hosts (humans and snails, respectively, the definitive and the intermediate), and five evolutive forms: cercariae (human infective form), schistosomula, adult worms, eggs, and miracidia. The techniques to diagnose schistosomiasis still have various limitations, mainly regarding low-intensity infections. Although various mechanisms associated with schistosomiasis have already been evidenced, there is still a need to fulfill the comprehension of this disease, especially to prospect for novel biomarkers to improve its diagnosis. Developing methods with more sensitivity and portability to detect the infection is valuable to reach schistosomiasis control. In this context, this review has gathered information not only on schistosomiasis biomarkers but also on emerging optical and electrochemical tools proposed in selected studies from about the last ten years. Aspects of the assays regarding the sensibility, specificity, and time needed for detecting diverse biomarkers are described. We hope this review can guide future developments in the field of schistosomiasis, contributing to improving its diagnosis and eradication.
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Affiliation(s)
- Rennan R M Lima
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - João V A Lima
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Jéssika F F Ribeiro
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Júlio B Nascimento
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Weslley F Oliveira
- Departamento de Bioquímica, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | - Paulo E Cabral Filho
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil.
| | - Adriana Fontes
- Departamento de Biofísica e Radiobiologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil.
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Hernández-Bazán S, Mata-Espinosa D, Lozano-Ordaz V, Ramos-Espinosa O, Barrios-Payán J, López-Casillas F, Hernández-Pando R. Immune regulatory effect of osteopontin gene therapy in a murine model of multi-drug resistant pulmonary tuberculosis. Hum Gene Ther 2022; 33:1037-1051. [PMID: 35615876 DOI: 10.1089/hum.2022.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Tuberculosis (TB) has been for many years a major public health problem since treatment is long and sometimes ineffective favoring the increase of multi-drug-resistant mycobacteria (MDR). Gene therapy is a novel and effective tool to regulate immune responses. In this study we evaluated the therapeutic effect of an adenoviral vector codifying osteopontin (AdOPN), a molecule known for their roles to favour Th1 and Th17 type-cytokine expression which are crucial in TB containment. A single-dose of AdOPN administration in BALB/c mice suffering late progressive pulmonary MDR-TB, produced significant lower bacterial load and pneumonia, due to higher expression of IFN-γ, IL-12 and IL-17 in coexistence with increase of granulomas in number and size, resulting in higher survival, in contrast with mice treated with the control adenovirus that codify the green fluorescent protein (AdGFP). Combined therapy of AdOPN with a regimen of 2nd line antibiotics produced a better control of bacterial load in lung during the first days of treatment, suggesting that AdOPN can shorten chemotherapy. Taken together, gene therapy with AdOPN leads to higher immune responses against TB infection, resulting in a new potential treatment against pulmonary TB that can co-adjuvant chemotherapy.
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Affiliation(s)
- Sujhey Hernández-Bazán
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
| | - Dulce Mata-Espinosa
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
| | - Vasti Lozano-Ordaz
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
| | - Octavio Ramos-Espinosa
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
| | - Jorge Barrios-Payán
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
| | - Fernando López-Casillas
- Universidad Nacional Autónoma de México Instituto de Fisiología Celular, 61739, Department of Cellular and Developmental Biology, Coyoacán, CDMX, Mexico;
| | - Rogelio Hernández-Pando
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, 42559, Department of Pathology, Experimental Pathology Section, Tlalpan, CDMX, Mexico;
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Barna BP, Malur A, Thomassen MJ. Studies in a Murine Granuloma Model of Instilled Carbon Nanotubes: Relevance to Sarcoidosis. Int J Mol Sci 2021; 22:ijms22073705. [PMID: 33918196 PMCID: PMC8038141 DOI: 10.3390/ijms22073705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/25/2021] [Accepted: 03/31/2021] [Indexed: 12/23/2022] Open
Abstract
Poorly soluble environmental antigens, including carbon pollutants, are thought to play a role in the incidence of human sarcoidosis, a chronic inflammatory granulomatous disease of unknown causation. Currently, engineered carbon products such as multiwall carbon nanotubes (MWCNT) are manufactured commercially and have been shown to elicit acute and chronic inflammatory responses in experimental animals, including the production of granulomas or fibrosis. Several years ago, we hypothesized that constructing an experimental model of chronic granulomatosis resembling that associated with sarcoidosis might be achieved by oropharyngeal instillation of MWCNT into mice. This review summarizes the results of our efforts to define mechanisms of granuloma formation and identify potential therapeutic targets for sarcoidosis. Evidence is presented linking findings from the murine MWCNT granuloma model to sarcoidosis pathophysiology. As our goal was to determine what pulmonary inflammatory pathways might be involved, we utilized mice of knock-out (KO) backgrounds which corresponded to deficiencies noted in sarcoidosis patients. A primary example of this approach was to study mice with a myeloid-specific knock-out of the lipid-regulated transcription factor, peroxisome proliferator-activated receptor gamma (PPARγ) which is strikingly depressed in sarcoidosis. Among the major findings associated with PPARγ KO mice compared to wild-type were: (1) exacerbation of granulomatous and fibrotic histopathology in response to MWCNT; (2) elevation of inflammatory mediators; and (3) pulmonary retention of a potentially antigenic ESAT-6 peptide co-instilled with MWCNT. In line with these data, we also observed that activation of PPARγ in wild-type mice by the PPARγ-specific ligand, rosiglitazone, significantly reduced both pulmonary granuloma and inflammatory mediator production. Similarly, recognition of a deficiency of ATP-binding cassette (ABC) lipid transporter ABCG1 in sarcoidosis led us to study MWCNT instillation in myeloid-specific ABCG1 KO mice. As anticipated, ABCG1 deficiency was associated with larger granulomas and increased levels of inflammatory mediators. Finally, a transcriptional survey of alveolar macrophages from MWCNT-instilled wild-type mice and human sarcoidosis patients revealed several common themes. One of the most prominent mediators identified in both human and mouse transcriptomic analyses was MMP12. Studies with MMP12 KO mice revealed similar acute reactions to those in wild-type but at chronic time points where wild-type maintained granulomatous disease, resolution occurred with MMP12 KO mice suggesting MMP12 is necessary for granuloma progression. In conclusion, these studies suggest that the MWCNT granuloma model has relevance to human sarcoidosis study, particularly with respect to immune-specific pathways.
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Pereira TA, Vaz de Melo Trindade G, Trindade Santos E, Pereira FEL, Souza MMD. Praziquantel pharmacotherapy reduces systemic osteopontin levels and liver collagen content in murine schistosomiasis mansoni. Int J Parasitol 2021; 51:437-440. [PMID: 33493521 DOI: 10.1016/j.ijpara.2020.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/06/2020] [Indexed: 12/29/2022]
Abstract
The pathogenesis of schistosomiasis and the mechanism of disease regression after Praziquantel pharmacotherapy are not fully elucidated. Schistosoma mansoni egg antigens directly stimulate the expression of the profibrogenic molecule osteopontin (OPN), and systemic OPN levels strongly correlate with disease severity, suggesting its use as a potential morbidity biomarker. In this study, we investigated the impact of Praziquantel use on systemic OPN levels and on liver collagen deposition in chronic murine schistosomiasis. Praziquantel treatment significantly reduced systemic OPN levels and liver collagen deposition, indicating that OPN could be a reliable tool for monitoring PZQ efficacy and fibrosis regression in murine schistosomiasis.
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Affiliation(s)
- Thiago A Pereira
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA; Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil.
| | | | - Elisangela Trindade Santos
- Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil
| | | | - Márcia Maria de Souza
- Laboratory of Experimental Pathology, Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, BA, Brazil
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8
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Wang D, Tong X, Wang L, Zhang S, Huang J, Zhang L, Fan H. The association between osteopontin and tuberculosis: A systematic review and meta-analysis. PLoS One 2020; 15:e0242702. [PMID: 33264357 PMCID: PMC7710079 DOI: 10.1371/journal.pone.0242702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 11/08/2020] [Indexed: 02/05/2023] Open
Abstract
Objective We examined the data reported in the studies for comparison of osteopontin (OPN) levels in tuberculosis and healthy participants, and to discuss whether OPN could be extended to disease diagnosis, severity assessment and therapeutic effect monitering. Methods A systematic literature search was conducted in PubMed, EMBASE, Scopus, the Cochrane Library, Web of Science, the China National Knowledge Infrastructure (CNKI) and WanFang databases. The pooled risk estimates were shown in standardized mean difference (SMD) with 95% confidence interval (CI) for OPN levels. The random effect model was used according to the test of heterogeneity among studies. Subgroup analyses and meta-regression models were performed to identify the possible sources of heterogeneity. Results 17 retrospective studies with 933 tuberculosis participants and 786 healthy controls were finally included in this article. In the primary meta-analysis, higher serum/plasma OPN levels were found in tuberculosis patients (SMD = 2.58, 95%CI = 2.09~3.08, P<0.001). Besides, pooled results from positive acid-fast bacilli (AFB) staining and imaging-severe tuberculosis group demonstrated higher OPN concentrations (SMD = 0.90, 95%CI = 0.58~1.21, P<0.001; SMD = 1.11, 95%CI = 0.90~1.33, P<0.001; respectively), and OPN levels decreased after two months of standard anti-tuberculosis therapy (SMD = 2.10, 95%CI = 1.36~2.85, P<0.001). Conclusions Elevated serum/plasma OPN levels may be associated with an increased risk of tuberculosis, while further well-designed studies are needed. Moreover, OPN could be considered as a potential biomarker for tuberculosis surveillance and severity assessment.
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Affiliation(s)
- Dongguang Wang
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Xiang Tong
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Lian Wang
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Shijie Zhang
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Jizhen Huang
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Li Zhang
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Hong Fan
- Department of Respiratory and Critical Care Medicine, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
- * E-mail:
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9
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McPeek M, Malur A, Tokarz DA, Lertpiriyapong K, Gowdy KM, Murray G, Wingard CJ, Fessler MB, Barna BP, Thomassen MJ. Alveolar Macrophage ABCG1 Deficiency Promotes Pulmonary Granulomatous Inflammation. Am J Respir Cell Mol Biol 2020; 61:332-340. [PMID: 30848658 DOI: 10.1165/rcmb.2018-0365oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Pulmonary granuloma formation is a complex and poorly understood response to inhaled pathogens and particulate matter. To explore the mechanisms of pulmonary granuloma formation and maintenance, our laboratory has developed a multiwall carbon nanotube (MWCNT)-induced murine model of chronic granulomatous inflammation. We have demonstrated that the MWCNT model closely mimics pulmonary sarcoidosis pathophysiology, including the deficiency of alveolar macrophage ATP-binding cassette (ABC) lipid transporters ABCA1 and ABCG1. We hypothesized that deficiency of alveolar macrophage ABCA1 and ABCG1 would promote pulmonary granuloma formation and inflammation. To test this hypothesis, the effects of MWCNT instillation were evaluated in ABCA1, ABCG1, and ABCA1/ABCG1 myeloid-specific knockout (KO) mice. Histological examination revealed significantly larger pulmonary granulomas in ABCG1-KO and ABCA1/ABCG1 double-KO animals when compared with wild-type animals. Evaluation of BAL cells indicated increased expression of CCL2 and osteopontin, genes shown to be involved in the formation and maintenance of pulmonary granulomas. Single deficiency of alveolar macrophage ABCA1 did not affect MWCNT-induced granuloma formation or proinflammatory gene expression. These observations indicate that the deficiency of alveolar macrophage ABCG1 promotes pulmonary granulomatous inflammation and that this is augmented by additional deletion of ABCA1.
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Affiliation(s)
- Matthew McPeek
- Program in Lung Cell Biology and Translational Research, Division of Pulmonary, Critical Care and Sleep Medicine
| | - Anagha Malur
- Program in Lung Cell Biology and Translational Research, Division of Pulmonary, Critical Care and Sleep Medicine
| | - Debra A Tokarz
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Kvin Lertpiriyapong
- Center of Comparative Medicine and Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Gina Murray
- Department of Pathology, East Carolina University, Greenville, North Carolina
| | - Christopher J Wingard
- School of Movement and Rehabilitation Sciences, Physical Therapy Program, Bellarmine University, Louisville, Kentucky; and
| | - Michael B Fessler
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Barbara P Barna
- Program in Lung Cell Biology and Translational Research, Division of Pulmonary, Critical Care and Sleep Medicine
| | - Mary Jane Thomassen
- Program in Lung Cell Biology and Translational Research, Division of Pulmonary, Critical Care and Sleep Medicine
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10
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Quan N, Harris LR, Halder R, Trinidad CV, Johnson BW, Horton S, Kimler BF, Pritchard MT, Duncan FE. Differential sensitivity of inbred mouse strains to ovarian damage in response to low-dose total body irradiation†. Biol Reprod 2020; 102:133-144. [PMID: 31436294 PMCID: PMC7334620 DOI: 10.1093/biolre/ioz164] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 07/08/2019] [Accepted: 08/15/2019] [Indexed: 12/15/2022] Open
Abstract
Radiation induces ovarian damage and accelerates reproductive aging. Inbred mouse strains exhibit differential sensitivity to lethality induced by total body irradiation (TBI), with the BALB/cAnNCrl (BALB/c) strain being more sensitive than the 129S2/SvPasCrl (129) strain. However, whether TBI-induced ovarian damage follows a similar pattern of strain sensitivity is unknown. To examine this possibility, female BALB/c and 129 mice were exposed to a single dose of 1 Gy (cesium-137 γ) TBI at 5 weeks of age, and ovarian tissue was harvested for histological and gene expression analyses 2 weeks post exposure. Sham-treated mice served as controls. 1 Gy radiation nearly eradicated the primordial follicles and dramatically decreased the primary follicles in both strains. In contrast, larger growing follicles were less affected in the 129 relative to BALB/c strain. Although this TBI paradigm did not induce detectable ovarian fibrosis in either of the strains, we did observe strain-dependent changes in osteopontin (Spp1) expression, a gene involved in wound healing, inflammation, and fibrosis. Ovaries from BALB/c mice exhibited higher baseline Spp1 expression that underwent a significant decrease in response to radiation relative to ovaries from the 129 strain. A correspondingly greater change in the ovarian matrix, as evidenced by reduced ovarian hyaluronan content, was also observed following TBI in BALB/c mice relative to 129 mice. These early changes in the ovary may predispose BALB/c mice to more pronounced late effects of TBI. Taken together, our results demonstrate that aspects of ovarian damage mirror other organ systems with respect to overall strain-dependent radiation sensitivity.
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Affiliation(s)
- Natalie Quan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Lacey R Harris
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Ritika Halder
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Camille V Trinidad
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Brian W Johnson
- Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - Shulamit Horton
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Bruce F Kimler
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Michele T Pritchard
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, USA
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11
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Khaliullin TO, Kisin ER, Murray AR, Yanamala N, Shurin MR, Gutkin DW, Fatkhutdinova LM, Kagan VE, Shvedova AA. Mediation of the single-walled carbon nanotubes induced pulmonary fibrogenic response by osteopontin and TGF-β1. Exp Lung Res 2018; 43:311-326. [PMID: 29140132 DOI: 10.1080/01902148.2017.1377783] [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] [Indexed: 01/13/2023]
Abstract
PURPOSE OF THE STUDY A number of in vivo studies have shown that pulmonary exposure to carbon nanotubes (CNTs) may lead to an acute local inflammatory response, pulmonary fibrosis, and granulomatous lesions. Among the factors that play direct roles in initiation and progression of fibrotic processes are epithelial-mesenchymal transition and myofibroblasts recruitment/differentiation, both mediated by transforming growth factor-β1 (TGF-β1). Yet, other contributors to TGF-β1 associated signaling, such as osteopontin (OPN) has not been fully investigated. MATERIALS AND METHODS OPN-knockout female mice (OPN-KO) along with their wild-type (WT) counterparts were exposed to single-walled carbon nanotubes (SWCNT) (40 µg/mouse) via pharyngeal aspiration and fibrotic response was assessed 1, 7, and 28 days post-exposure. Simultaneously, RAW 264.7 and MLE-15 cells were treated with SWCNT (24 hours, 6 µg/cm2 to 48 µg/cm2) or bleomycin (0.1 µg/ml) in the presence of OPN-blocking antibody or isotype control, and TGF-β1 was measured in supernatants. RESULTS AND CONCLUSIONS Diminished lactate dehydrogenase activity at all time points, along with less pronounced neutrophil influx 24 h post-exposure, were measured in broncho-alveolar lavage (BAL) of OPN-KO mice compared to WT. Pro-inflammatory cytokine release (IL-6, TNF-α, MCP-1) was reduced. A significant two-fold increase of TGF-β1 was found in BAL of WT mice at 7 days, while TGF-β1 levels in OPN-KO animals remained unaltered. Histological examination revealed marked decrease in granuloma formation and less collagen deposition in the lungs of OPN-KO mice compared to WT. RAW 264.7 but not MLE-15 cells exposed to SWCNT and bleomycin had significantly less TGF-β1 released in the presence of OPN-blocking antibody. We believe that OPN is important in initiating the cellular mechanisms that produce an overall pathological response to SWCNT and it may act upstream of TGF-β1. Further investigation to understand the mechanistic details of such interactions is critical to predict outcomes of pulmonary exposure to CNT.
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Affiliation(s)
- Timur O Khaliullin
- a Department of Physiology & Pharmacology , West Virginia University , Morgantown , WV.,b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV
| | - Elena R Kisin
- b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV
| | | | | | - Michael R Shurin
- c Department Pathology , University of Pittsburgh , Pittsburgh , PA
| | - Dmitriy W Gutkin
- c Department Pathology , University of Pittsburgh , Pittsburgh , PA
| | - Liliya M Fatkhutdinova
- d Department of Hygiene and Occupational Medicine , Kazan State Medical University , Kazan , Russia
| | - Valerian E Kagan
- e Department of Pathology , University of Pittsburgh , Pittsburgh , PA
| | - Anna A Shvedova
- a Department of Physiology & Pharmacology , West Virginia University , Morgantown , WV.,b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV
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12
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McPeek M, Malur A, Tokarz DA, Murray G, Barna BP, Thomassen MJ. PPAR-gamma pathways attenuate pulmonary granuloma formation in a carbon nanotube induced murine model of sarcoidosis. Biochem Biophys Res Commun 2018; 503:684-690. [PMID: 29908181 DOI: 10.1016/j.bbrc.2018.06.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 06/12/2018] [Indexed: 11/29/2022]
Abstract
Peroxisome proliferator activated receptor gamma (PPARγ), a ligand activated nuclear transcription factor, is constitutively expressed in alveolar macrophages of healthy individuals. PPARγ deficiencies have been noted in several lung diseases including the alveolar macrophages of pulmonary sarcoidosis patients. We have previously described a murine model of multiwall carbon nanotubes (MWCNT) induced pulmonary granulomatous inflammation which bears striking similarities to pulmonary sarcoidosis, including the deficiency of alveolar macrophage PPARγ. Further studies demonstrate alveolar macrophage PPARγ deficiency exacerbates MWCNT-induced pulmonary granulomas. Based on these observations we hypothesized that activation of PPARγ via administration of the PPARγ-specific ligand rosiglitazone would limit MWCNT-induced granuloma formation and promote PPARγ-dependent pathways. Results presented here show that rosiglitazone significantly limits the frequency and severity of MWCNT-induced pulmonary granulomas. Furthermore, rosiglitazone attenuates alveolar macrophage NF-κB activity and downregulates the expression of the pro-inflammatory mediators, CCL2 and osteopontin. PPARγ activation via rosiglitazone also prevents the MWCNT-induced deficiency of PPARγ-regulated ATP-binding cassette lipid transporter-G1 (ABCG1) expression. ABCG1 is crucial to pulmonary lipid homeostasis. ABCG1 deficiency results in lipid accumulation which promotes pro-inflammatory macrophage activation. Our results indicate that restoration of homeostatic ABCG1 levels by rosiglitazone correlates with both reduced pulmonary lipid accumulation, and decreased alveolar macrophage activation. These data confirm and further support our previous observations that PPARγ pathways are critical in regulating MWCNT-induced pulmonary granulomatous inflammation.
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Affiliation(s)
- Matthew McPeek
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep Medicine, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Anagha Malur
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep Medicine, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Debra A Tokarz
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, 27695, USA
| | - Gina Murray
- Department of Pathology, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Barbara P Barna
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep Medicine, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA
| | - Mary Jane Thomassen
- Department of Internal Medicine, Pulmonary, Critical Care & Sleep Medicine, Brody School of Medicine, East Carolina University, Greenville, NC, 27834, USA.
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13
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Bishop L, Cena L, Orandle M, Yanamala N, Dahm MM, Birch ME, Evans DE, Kodali VK, Eye T, Battelli L, Zeidler-Erdely PC, Casuccio G, Bunker K, Lupoi JS, Lersch TL, Stefaniak AB, Sager T, Afshari A, Schwegler-Berry D, Friend S, Kang J, Siegrist KJ, Mitchell CA, Lowry DT, Kashon ML, Mercer RR, Geraci CL, Schubauer-Berigan MK, Sargent LM, Erdely A. In Vivo Toxicity Assessment of Occupational Components of the Carbon Nanotube Life Cycle To Provide Context to Potential Health Effects. ACS NANO 2017; 11:8849-8863. [PMID: 28759202 DOI: 10.1021/acsnano.7b03038] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pulmonary toxicity studies on carbon nanotubes focus primarily on as-produced materials and rarely are guided by a life cycle perspective or integration with exposure assessment. Understanding toxicity beyond the as-produced, or pure native material, is critical, due to modifications needed to overcome barriers to commercialization of applications. In the first series of studies, the toxicity of as-produced carbon nanotubes and their polymer-coated counterparts was evaluated in reference to exposure assessment, material characterization, and stability of the polymer coating in biological fluids. The second series of studies examined the toxicity of aerosols generated from sanding polymer-coated carbon-nanotube-embedded or neat composites. Postproduction modification by polymer coating did not enhance pulmonary injury, inflammation, and pathology or in vitro genotoxicity of as-produced carbon nanotubes, and for a particular coating, toxicity was significantly attenuated. The aerosols generated from sanding composites embedded with polymer-coated carbon nanotubes contained no evidence of free nanotubes. The percent weight incorporation of polymer-coated carbon nanotubes, 0.15% or 3% by mass, and composite matrix utilized altered the particle size distribution and, in certain circumstances, influenced acute in vivo toxicity. Our study provides perspective that, while the number of workers and consumers increases along the life cycle, toxicity and/or potential for exposure to the as-produced material may greatly diminish.
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Affiliation(s)
- Lindsey Bishop
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
- West Virginia University , Morgantown, West Virginia 26505, United States
| | - Lorenzo Cena
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
- West Chester University , West Chester, Pennsylvania 19383, United States
| | - Marlene Orandle
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Naveena Yanamala
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Matthew M Dahm
- National Institute for Occupational Safety and Health , Cincinnati, Ohio 45213, United States
| | - M Eileen Birch
- National Institute for Occupational Safety and Health , Cincinnati, Ohio 45213, United States
| | - Douglas E Evans
- National Institute for Occupational Safety and Health , Cincinnati, Ohio 45213, United States
| | - Vamsi K Kodali
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Tracy Eye
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Lori Battelli
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Patti C Zeidler-Erdely
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Gary Casuccio
- RJ Lee Group , Monroeville, Pennsylvania 15146, United States
| | - Kristin Bunker
- RJ Lee Group , Monroeville, Pennsylvania 15146, United States
| | - Jason S Lupoi
- RJ Lee Group , Monroeville, Pennsylvania 15146, United States
| | - Traci L Lersch
- RJ Lee Group , Monroeville, Pennsylvania 15146, United States
| | - Aleksandr B Stefaniak
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Tina Sager
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Aliakbar Afshari
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Diane Schwegler-Berry
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Sherri Friend
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Jonathan Kang
- West Virginia University , Morgantown, West Virginia 26505, United States
| | - Katelyn J Siegrist
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Constance A Mitchell
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - David T Lowry
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Michael L Kashon
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Robert R Mercer
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Charles L Geraci
- National Institute for Occupational Safety and Health , Cincinnati, Ohio 45213, United States
| | | | - Linda M Sargent
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
| | - Aaron Erdely
- National Institute for Occupational Safety and Health , Morgantown, West Virginia 26505, United States
- West Virginia University , Morgantown, West Virginia 26505, United States
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14
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Pereira TA, Syn WK, Pereira FEL, Lambertucci JR, Secor WE, Diehl AM. Serum osteopontin is a biomarker of severe fibrosis and portal hypertension in human and murine schistosomiasis mansoni. Int J Parasitol 2016; 46:829-832. [PMID: 27729270 PMCID: PMC5584370 DOI: 10.1016/j.ijpara.2016.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/22/2016] [Accepted: 08/25/2016] [Indexed: 12/29/2022]
Abstract
Schistosomiasis is a major cause of fibrosis and portal hypertension. The reason 4-10% of infected subjects develops hepatosplenic schistosomiasis remains unclear. Chronically infected male CBA/J mice reproduce the dichotomic forms of human schistosomiasis. Most mice (80%) develop moderate splenomegaly syndrome (similar to hepatointestinal disease in humans) and 20% present severe hypersplenomegaly syndrome (analogous to human hepatosplenic disease). We demonstrated that the profibrogenic molecule osteopontin discriminates between mice with severe and mild disease and could be a novel morbidity biomarker in murine and human schistosomiasis. Failure to downregulate osteopontin during the chronic phase may explain why hepatosplenic subjects develop severe fibrosis.
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Affiliation(s)
- Thiago Almeida Pereira
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA; Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Immunopathogesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Wing-Kin Syn
- Liver Regeneration and Repair Research Group, Institute of Hepatology, Foundation for Liver Research, London, UK; Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, SC, USA; Section of Gastroenterology, Ralph H Johnson Veteran Affairs Medical Center, Charleston, SC, USA
| | - Fausto E L Pereira
- Núcleo de Doenças Infecciosas, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - José Roberto Lambertucci
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Anna Mae Diehl
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
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15
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Abstract
Protection of mucosal tissues of the oral cavity, intestines, respiratory tract, and urogenital tract from the constant challenge of pathogens is achieved by the combined barrier function of the lining epithelia and specialized immune cells. Recent studies have indicated that osteopontin (OPN) has a pivotal role in the development of immune responses and in the tissue destruction and the subsequent repair processes associated with inflammatory diseases. While expression of OPN is increased in immune cells—including neutrophils, macrophages, T- and B-lymphocytes—and in epithelial, endothelial, and fibroblastic cells of inflamed tissues, deciphering the specific functions of OPN has been difficult. In part, this is due to the broad range of biological activities of OPN that are mediated by multiple receptors which recognize several signaling motifs whose activities are influenced by post-translational modifications and proteolytic processing of OPN. Understanding the role of OPN in mucosal inflammation is further complicated by its contributions to the barrier function of the lining epithelia and the complexity of the specialized mucosal immune system. In an attempt to provide some insights into the involvement of OPN in mucosal diseases, this review summarizes current knowledge of the biological activities of OPN involved in the development of inflammatory responses and in wound healing, and indicates how these activities may affect the protection of mucosal tissues.
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Affiliation(s)
- J Sodek
- CIHR Group in Matrix Dynamics, Faculty of Dentistry, University of Toronto, ON, Canada
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16
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Pereira TA, Syn WK, Amâncio FF, Cunha PHD, Caporali JFM, Trindade GVDM, Santos ET, Souza MM, Andrade ZA, Witek RP, Secor WE, Pereira FEL, Lambertucci JR, Diehl AM. Osteopontin Is Upregulated in Human and Murine Acute Schistosomiasis Mansoni. PLoS Negl Trop Dis 2016; 10:e0005057. [PMID: 27755536 PMCID: PMC5068698 DOI: 10.1371/journal.pntd.0005057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 09/20/2016] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Symptomatic acute schistosomiasis mansoni is a systemic hypersensitivity reaction against the migrating schistosomula and mature eggs after a primary infection. The mechanisms involved in the pathogenesis of acute schistosomiasis are not fully elucidated. Osteopontin has been implicated in granulomatous reactions and in acute hepatic injury. Our aims were to evaluate if osteopontin plays a role in acute Schistosoma mansoni infection in both human and experimentally infected mice and if circulating OPN levels could be a novel biomarker of this infection. METHODOLOGY/PRINCIPAL FINDINGS Serum/plasma osteopontin levels were measured by ELISA in patients with acute (n = 28), hepatointestinal (n = 26), hepatosplenic (n = 39) schistosomiasis and in uninfected controls (n = 21). Liver osteopontin was assessed by immunohistochemistry in needle biopsies of 5 patients. Sera and hepatic osteopontin were quantified in the murine model of schistosomiasis mansoni during acute (7 and 8 weeks post infection, n = 10) and chronic (30 weeks post infection, n = 8) phase. Circulating osteopontin levels are increased in patients with acute schistosomiasis (p = 0.0001). The highest levels of OPN were observed during the peak of clinical symptoms (7-11 weeks post infection), returning to baseline level once the granulomas were modulated (>12 weeks post infection). The plasma levels in acute schistosomiasis were even higher than in hepatosplenic patients. The murine model mirrored the human disease. Macrophages were the major source of OPN in human and murine acute schistosomiasis, while the ductular reaction maintains OPN production in hepatosplenic disease. Soluble egg antigens from S. mansoni induced OPN expression in primary human kupffer cells. CONCLUSIONS/SIGNIFICANCE S. mansoni egg antigens induce the production of OPN by macrophages in the necrotic-exudative granulomas characteristic of acute schistosomiasis mansoni. Circulating OPN levels are upregulated in human and murine acute schistosomiasis and could be a non-invasive biomarker of this form of disease.
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Affiliation(s)
- Thiago Almeida Pereira
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, United States of America
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Patologia Experimental, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, BA, Brazil
- Immunopathogesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda,MD, United States of America
| | - Wing-Kin Syn
- Section of Gastroenterology, Ralph H Johnson Veteran Affairs Medical Center, Charleston, South Carolina, United States of America
- Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Liver Regeneration and Repair Research Group, Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
| | - Frederico Figueiredo Amâncio
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Pedro Henrique Diniz Cunha
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Julia Fonseca Morais Caporali
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Guilherme Vaz de Melo Trindade
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Physiology, School of Medicine, National University of Ireland, Galway, Ireland
| | - Elisângela Trindade Santos
- Laboratório de Patologia Experimental, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, BA, Brazil
| | - Márcia Maria Souza
- Laboratório de Patologia Experimental, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, BA, Brazil
| | - Zilton Araújo Andrade
- Laboratório de Patologia Experimental, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, BA, Brazil
| | - Rafal P Witek
- Thermo Fisher Scientific, Frederick, MD, United States of America
| | - William Evan Secor
- Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | | | - José Roberto Lambertucci
- Departamento de Clínica Médica, Laboratório de Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- * E-mail: (JRL); (AMD)
| | - Anna Mae Diehl
- Division of Gastroenterology, Department of Medicine, Duke University Medical Center, Durham, NC, United States of America
- * E-mail: (JRL); (AMD)
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17
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Hasibuan FM, Shiratori B, Senoputra MA, Chagan-Yasutan H, Koesoemadinata RC, Apriani L, Takahashi Y, Niki T, Alisjahbana B, Hattori T. Evaluation of matricellular proteins in systemic and local immune response to Mycobacterium tuberculosis infection. Microbiol Immunol 2016; 59:623-32. [PMID: 26337438 DOI: 10.1111/1348-0421.12320] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/19/2015] [Accepted: 08/27/2015] [Indexed: 12/19/2022]
Abstract
Matricellular proteins such as osteopontin (OPN), galectin-9 (Gal-9), and tenascin-C (TN-C) are expressed not only under normal physiological conditions, but also during infection, inflammation and tumorigenesis. Plasma concentrations of matricellular proteins were studied to determine their diagnostic value as potential markers of tuberculosis (TB) activity. It was found that concentrations of OPN and TN-C were higher in patients with active TB than in healthy controls and individuals with latent infection. Moreover, LTBI patients had higher concentrations of OPN than did healthy controls. Gal-9 concentrations did not differ significantly between groups. Concentrations of matricellular proteins were higher in pleural fluid than in the plasma of patients with TB. Expression of matricellular proteins was also investigated in TB granulomas and other granulomatous diseases. Positive OPN and Gal-9 staining was observed in TB and sarcoidosis granulomas, but not in Crohn disease granulomas. The fibrotic ring around granulomas stained positive for TN-C in TB and sarcoidosis, but not in Crohn disease. Of the three matricellular proteins studied, OPN and TN-C may serve as reliable plasma markers for monitoring TB activity, whereas Gal-9 seems to be expressed more at the site of infection than in the systemic circulation.
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Affiliation(s)
- Fakhrial Mirwan Hasibuan
- Division of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University.,Public Health Science Program
| | - Beata Shiratori
- Division of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University.,Division of Disaster-related Infectious Diseases, International Research Institute of Disaster Science, Tohoku University, 2-1 Seiryo-machi
| | - Muhammad Andrian Senoputra
- Division of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University.,Public Health Science Program
| | - Haorile Chagan-Yasutan
- Division of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University.,Division of Disaster-related Infectious Diseases, International Research Institute of Disaster Science, Tohoku University, 2-1 Seiryo-machi
| | | | - Lika Apriani
- TB-HIV Research Center, Faculty of Medicine, Padjadjaran University, Jl Eicjkman 38, Bandung, 40161, West Java, Indonesia
| | - Yayoi Takahashi
- Department of Pathology, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Miyagi
| | - Toshiro Niki
- Research Division, GalPharma Company, NEXT-Kagawa 204, 2217-44 Hayashi-cho, Takamatsu-shi, Kagawa, 760-0301, Japan
| | - Bachti Alisjahbana
- TB-HIV Research Center, Faculty of Medicine, Padjadjaran University, Jl Eicjkman 38, Bandung, 40161, West Java, Indonesia
| | - Toshio Hattori
- Division of Emerging Infectious Diseases, Graduate School of Medicine, Tohoku University.,Public Health Science Program
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18
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Malur A, Barna BP, Patel J, McPeek M, Wingard CJ, Dobbs L, Thomassen MJ. Exposure to a Mycobacterial Antigen, ESAT-6, Exacerbates Granulomatous and Fibrotic Changes in a Multiwall Carbon Nanotube Model of Chronic Pulmonary Disease. ACTA ACUST UNITED AC 2015; 6. [PMID: 27019768 DOI: 10.4172/2157-7439.1000340] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recent studies suggest additive effects of environmental pollutants and microbial antigens on respiratory disease. We established a granuloma model in which instilled multiwall carbon nanotubes (MWCNT) elicit granulomatous pathology. We hypothesized that mycobacterial antigen ESAT-6, a T cell activator associated with tuberculosis and sarcoidosis, might alter pathology. Wild-type C57Bl/6 mice received MWCNT with or without ESAT-6 peptide. Controls received vehicle (surfactant-PBS) or ESAT-6 alone. Mice were evaluated 60 days later for granulomas, fibrosis, and bronchoalveolar lavage (BAL) cell expression of inflammatory mediators (CCL2, MMP-12, and Osteopontin). Results indicated increased granulomas, fibrosis, and inflammatory mediators in mice receiving the combination of MWCNT+ESAT-6 compared to MWCNT or vehicle alone. ESAT-6 alone showed no significant effect on these pathological endpoints. However, CD3 (+) lymphocyte infiltration of lung tissue increased with MWCNT+ESAT-6 versus MWCNT alone. Findings suggest that concurrent exposure to microbial antigen and MWCNT exacerbates chronic pulmonary disease.
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Schistosome-induced cholangiocyte proliferation and osteopontin secretion correlate with fibrosis and portal hypertension in human and murine schistosomiasis mansoni. Clin Sci (Lond) 2015. [PMID: 26201095 PMCID: PMC4558314 DOI: 10.1042/cs20150117] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Schistosomal egg antigens induce host bile ductular cells to proliferate and produce osteopontin (OPN), a pro-fibrogenic factor that stimulates hepatic stellate cells to become myofibroblasts. The numbers of OPN-producing bile ductules correlate with fibrogenesis and portal hypertension in humans and mice. Schistosomiasis is a major cause of portal hypertension worldwide. It associates with portal fibrosis that develops during chronic infection. The mechanisms by which the pathogen evokes these host responses remain unclear. We evaluated the hypothesis that schistosome eggs release factors that directly stimulate liver cells to produce osteopontin (OPN), a pro-fibrogenic protein that stimulates hepatic stellate cells to become myofibroblasts. We also investigated the utility of OPN as a biomarker of fibrosis and/or severity of portal hypertension. Cultured cholangiocytes, Kupffer cells and hepatic stellate cells were treated with soluble egg antigen (SEA); OPN production was quantified by quantitative reverse transcriptase polymerase chain reaction (qRTPCR) and ELISA; cell proliferation was assessed by BrdU (5-bromo-2'-deoxyuridine). Mice were infected with Schistosoma mansoni for 6 or 16 weeks to cause early or advanced fibrosis. Liver OPN was evaluated by qRTPCR and immunohistochemistry (IHC) and correlated with liver fibrosis and serum OPN. Livers from patients with schistosomiasis mansoni (early fibrosis n=15; advanced fibrosis n=72) or healthy adults (n=22) were immunostained for OPN and fibrosis markers. Results were correlated with plasma OPN levels and splenic vein pressures. SEA-induced cholangiocyte proliferation and OPN secretion (P<0.001 compared with controls). Cholangiocytes were OPN (+) in Schistosoma-infected mice and humans. Liver and serum OPN levels correlated with fibrosis stage (mice: r=0.861; human r=0.672, P=0.0001) and myofibroblast accumulation (mice: r=0.800; human: r=0.761, P=0.0001). Numbers of OPN (+) bile ductules strongly correlated with splenic vein pressure (r=0.778; P=0.001). S. mansoni egg antigens stimulate cholangiocyte proliferation and OPN secretion. OPN levels in liver and blood correlate with fibrosis stage and portal hypertension severity.
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Subbian S, Tsenova L, Kim MJ, Wainwright HC, Visser A, Bandyopadhyay N, Bader JS, Karakousis PC, Murrmann GB, Bekker LG, Russell DG, Kaplan G. Lesion-Specific Immune Response in Granulomas of Patients with Pulmonary Tuberculosis: A Pilot Study. PLoS One 2015; 10:e0132249. [PMID: 26133981 PMCID: PMC4489805 DOI: 10.1371/journal.pone.0132249] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 06/11/2015] [Indexed: 01/20/2023] Open
Abstract
The formation and maintenance of granulomas is central to the host response to Mycobacterium tuberculosis (Mtb) infection. It is widely accepted that the lungs of patients with tuberculosis (TB) usually contain multiple infection foci, and that the granulomas evolve and differentiate independently, resulting in considerable heterogeneity. Although gene expression profiles of human blood cells have been proposed as biomarkers of Mtb infection and/or active disease, the immune profiles of discrete lesion types has not been studied extensively. Using histology, immunopathology and genome-wide transcriptome analysis, we explored the immunological profile of human lung TB granulomas. We show that although the different granulomas share core similarities in their immunological/inflammatory characteristics, they also exhibit significant divergence. Despite similar numbers of CD68+ macrophages in the different lesions, the extent of immune reactivity, as determined by the density of CD3+ T cells in the macrophage rich areas, and the extent of fibrosis, shows considerable variation. Both quantitative and qualitative differences among significantly differentially expressed genes (SDEG) were noted in each of the lesion types studied. Further, network/pathway analysis of SDEG revealed differential regulation of inflammatory response, immune cell trafficking, and cell mediated immune response in the different lesions. Our data highlight the formidable challenges facing ongoing efforts to identify peripheral blood biomarkers due to the diversity of lesion types and complexity of local immune responses in the lung.
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MESH Headings
- Cellular Microenvironment
- Fibrosis
- Gene Expression Profiling
- Granuloma, Respiratory Tract/genetics
- Granuloma, Respiratory Tract/immunology
- Granuloma, Respiratory Tract/pathology
- Humans
- Inflammation
- Interleukin-7/physiology
- Lung/pathology
- Lymphocyte Activation
- Macrophages/immunology
- Necrosis
- Pilot Projects
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- RNA, Messenger/isolation & purification
- Receptors, Calcitriol/physiology
- STAT1 Transcription Factor/physiology
- Signal Transduction
- T-Lymphocyte Subsets/immunology
- Transcriptome
- Tuberculosis, Multidrug-Resistant/genetics
- Tuberculosis, Multidrug-Resistant/immunology
- Tuberculosis, Multidrug-Resistant/pathology
- Tuberculosis, Pulmonary/genetics
- Tuberculosis, Pulmonary/immunology
- Tuberculosis, Pulmonary/pathology
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Affiliation(s)
- Selvakumar Subbian
- Laboratory of Mycobacterial Immunity and Pathogenesis, Public Health Research Institute (PHRI), Rutgers Biomedical and Health Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America
- * E-mail:
| | - Liana Tsenova
- Laboratory of Mycobacterial Immunity and Pathogenesis, Public Health Research Institute (PHRI), Rutgers Biomedical and Health Sciences, Rutgers, The State University of New Jersey, Newark, New Jersey, United States of America
- Department of Biological Sciences, NYC College of Technology, Brooklyn, New York, United States of America
| | - Mi-Jeong Kim
- Department of Immunobiology, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Helen C. Wainwright
- Division of Anatomical Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Annalie Visser
- Division of Anatomical Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Nirmalya Bandyopadhyay
- Department of Biomedical Engineering, High-Throughput Biology Center and Institute of Computational Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Joel S. Bader
- Department of Biomedical Engineering, High-Throughput Biology Center and Institute of Computational Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Petros C. Karakousis
- Center for Tuberculosis Research, Department of Medicine, Johns Hopkins University School of Medicine and Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Gabriele B. Murrmann
- Department of General and Thoracic Surgery, Medisch Centrum Leeuwarden, Leeuwarden, The Netherlands
| | - Linda-Gail Bekker
- The Desmond Tutu HIV Centre, Institute of Infectious Disease and Molecular Medicine and Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - David G. Russell
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Gilla Kaplan
- Bill and Melinda Gates Foundation, Seattle, Washington, United States of America
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Osteopontin knockout does not influence the severity of rectal damage in a preclinical model of radiation proctitis in mice. Dig Dis Sci 2015; 60:1633-44. [PMID: 25577272 DOI: 10.1007/s10620-014-3520-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 12/30/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Radiation damage to the normal gut is a dose-limiting factor in the application of radiation therapy to treat abdominal and pelvic cancers. All tissue cell types react in concert to orchestrate an acute inflammatory reaction followed by a delayed chronic scarring process. Osteopontin (OPN) is a matricellular protein known to be involved in various physiological but also pathological processes such as tissue inflammation and fibrosis. AIMS The aim of our study was to determine whether OPN knockout influences the severity of radiation proctitis and to investigate the role of OPN in the development of radiation-induced gut damage. RESULTS Here we show that human radiation proctitis is associated with increased immunostaining of the intracellular and extracellular/matrix-linked isoforms of OPN. Moreover, endothelial cells in vitro and rectal tissue in a preclinical model of radiation proctitis in mice both respond to radiation exposure by a sustained increase in OPN mRNA and protein levels. Genetic deficiency of OPN did not influence radiation-induced rectal damage and was associated with significantly decreased animal survival. The acute and late radiation injury scores were similar in OPN-null mice compared with their control littermates. CONCLUSION This study shows that in our model and given the pleiotropic actions of OPN in tissue inflammation and fibrosis, further studies are necessary to understand the precise roles of OPN in radiation-induced proctitis and to determine whether OPN is a useful therapeutic tool in prevention of radiation-induced intestinal tissue injury.
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Huaux F, Lo Re S, Giordano G, Uwambayinema F, Devosse R, Yakoub Y, Panin N, Palmai-Pallag M, Rabolli V, Delos M, Marbaix E, Dauguet N, Couillin I, Ryffel B, Renauld JC, Lison D. IL-1α induces CD11b(low) alveolar macrophage proliferation and maturation during granuloma formation. J Pathol 2015; 235:698-709. [PMID: 25421226 DOI: 10.1002/path.4487] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 10/31/2014] [Accepted: 11/21/2014] [Indexed: 12/28/2022]
Abstract
Macrophages play a central role in immune and tissue responses of granulomatous lung diseases induced by pathogens and foreign bodies. Circulating monocytes are generally viewed as central precursors of these tissue effector macrophages. Here, we provide evidence that granulomas derive from alveolar macrophages serving as a local reservoir for the expansion of activated phagocytic macrophages. By exploring lung granulomatous responses to silica particles in IL-1-deficient mice, we found that the absence of IL-1α, but not IL-1β, was associated with reduced CD11b(high) phagocytic macrophage accumulation and fewer granulomas. This defect was associated with impaired alveolar clearance and resulted in the development of pulmonary alveolar proteinosis (PAP). Reconstitution of IL-1α(-/-) mice with recombinant IL-1α restored lung clearance functions and the pulmonary accumulation of CD11b(high) phagocytic macrophages. Mechanistically, IL-1α induced the proliferation of CD11b(low) alveolar macrophages and differentiated these cells into CD11b(high) macrophages which perform critical phagocytic functions and organize granuloma. We newly discovered here that IL-1α triggers lung responses requiring macrophage proliferation and maturation from tissue-resident macrophages.
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Affiliation(s)
- François Huaux
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Experimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium
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Opposite effects of interferon regulatory factor 1 and osteopontin on the apoptosis of epithelial cells induced by TNF-α in inflammatory bowel disease. Inflamm Bowel Dis 2014; 20:1950-61. [PMID: 25208103 DOI: 10.1097/mib.0000000000000192] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is characterized by a damaged intestinal epithelium barrier. Interferon regulatory factor 1 (IRF1) and osteopontin (OPN) regulate cell survival and growth in a variety of circumstances but their effects on the intestinal epithelium have not been elucidated. In this study, we sought to determine the effects of OPN on intestinal epithelial cells under conditions of tumor necrosis factor (TNF)-α-induced inflammation and whether IRF1 regulates OPN expression, the activation of downstream pathways, and inflammatory responses. METHODS The expression levels of OPN and IRF1 were assessed by immunohistochemical analyses of human IBD and experimental mouse colitis. The effects of IRF1 and OPN on inflammatory responses were investigated in vitro in NCM460 and Caco-2 cells stimulated by TNF-α. Changes in p-AKT, p-P38, and p-ERK levels were quantified by western blotting assays. The regulation of OPN expression by IRF1 was determined by luciferase activity and chromatin immunoprecipitation assays. RESULTS IRF1 was upregulated in human IBD and in the colon epithelium of mice with dextran sulfate sodium-induced colitis. Additionally, IRF1 was correlated with high-sensitivity C-reactive protein, erythrocyte sedimentation rate, Crohn's disease activity index, Crohn's disease endoscopic index of severity, and simple endoscopic score for Crohn's disease in Crohn's disease and with high-sensitivity C-reactive protein, erythrocyte sedimentation rate, Mayo score, Baron score, modified Baron score, Rachmilewitz score, ulcerative colitis endoscopic index of severity, ulcerative colitis colonoscopic index of severity, and disease duration in ulcerative colitis. The expression of OPN was significantly decreased in patients with IBD compared with controls and in dextran sulfate sodium-induced experimental colitis and was also inversely correlated with clinical and endoscopic activities in both Crohn's disease and ulcerative colitis. TNF-α treatment upregulated IRF1 and diminished OPN in both NCM460 and Caco-2 cells. The overexpression of OPN and rhOPN ameliorated the apoptosis induced by TNF-α, whereas the overexpression of IRF1 aggravated apoptosis, indicating opposite effects of OPN and IRF1 in inflamed epithelial cells. The luciferase and chromatin immunoprecipitation assays showed that IRF1 transcriptionally modulated the expression of OPN. TNF-α inhibited the OPN-induced upregulation of p-ERK, p-P38, and p-AKT. CONCLUSIONS Our data suggest that during intestinal inflammation, the TNF-α-mediated activation of IRF1 is related to the subsequent suppression of OPN expression, further reducing p-AKT, p-P38, and p-ERK activities and resulting in aggravation of the injury to intestinal epithelial cells.
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Reed RM, Amoroso A, Hashmi S, Kligerman S, Shuldiner AR, Mitchell BD, Netzer G. Calcified granulomatous disease: occupational associations and lack of familial aggregation. Lung 2014; 192:841-7. [PMID: 25038755 DOI: 10.1007/s00408-014-9624-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 07/03/2014] [Indexed: 12/21/2022]
Abstract
PURPOSE The acute host response to histoplasma capsulatum infection varies according to exposure and susceptibility. Late sequelae include calcifications in the lung, thoracic lymphatics, and spleen. Determinants of calcified granuloma formation are poorly studied and may differ from those affecting acute response. We examined the occupational associations and familial aggregation of radiographic calcified granulomatous disease to characterize the determinants of calcified granuloma formation. METHODS We analyzed prospectively collected cross-sectional data including computed tomograms from 872 adult members of the Old Order Amish of Lancaster County. RESULTS Granulomas were present in 71 % of participants. Granulomas were present in the lung of 57 % of participants, in the hilar or mediastinal lymph nodes of 55 % of participants, and in the spleen of 29 % of participants. No significant differences were observed in the presence of granulomas between men and women. Each year of age was associated with 4 % higher odds of splenic calcifications, and a primary occupation of farming was associated with an 84 % higher odds of splenic calcifications. A compelling pattern of familial aggregation was not observed. CONCLUSIONS Calcified granulomatous disease does not appear to aggregate in families. Determinants influencing patterns of granulomatous disease include occupation, age, and geographic location.
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Affiliation(s)
- Robert M Reed
- Division of Pulmonary and Critical Care Medicine, University of Maryland School of Medicine, Baltimore, MD, USA,
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Barna BP, Judson MA, Thomassen MJ. Carbon Nanotubes and Chronic Granulomatous Disease. NANOMATERIALS 2014; 4:508-521. [PMID: 25525507 PMCID: PMC4267561 DOI: 10.3390/nano4020508] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Use of nanomaterials in manufactured consumer products is a rapidly expanding industry and potential toxicities are just beginning to be explored. Combustion-generated multiwall carbon nanotubes (MWCNT) or nanoparticles are ubiquitous in non-manufacturing environments and detectable in vapors from diesel fuel, methane, propane, and natural gas. In experimental animal models, carbon nanotubes have been shown to induce granulomas or other inflammatory changes. Evidence suggesting potential involvement of carbon nanomaterials in human granulomatous disease, has been gathered from analyses of dusts generated in the World Trade Center disaster combined with epidemiological data showing a subsequent increase in granulomatous disease of first responders. In this review we will discuss evidence for similarities in the pathophysiology of carbon nanotube-induced pulmonary disease in experimental animals with that of the human granulomatous disease, sarcoidosis.
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Affiliation(s)
- Barbara P. Barna
- Division of Pulmonary, Critical Care and Sleep Medicine, East Carolina University, Brody Medical Sciences Building, 600 Moye Blvd. Rm. 3E-149, Greenville, NC 27834, USA; E-Mail:
| | - Marc A. Judson
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, MC-91, 47 New Scotland Avenue, Albany, NY 12208, USA; E-Mail:
| | - Mary Jane Thomassen
- Division of Pulmonary, Critical Care and Sleep Medicine, East Carolina University, Brody Medical Sciences Building, 600 Moye Blvd. Rm. 3E-149, Greenville, NC 27834, USA; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-252-744-1117; Fax: +1-252-744-4887
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Landsiedel R, Ma-Hock L, Hofmann T, Wiemann M, Strauss V, Treumann S, Wohlleben W, Gröters S, Wiench K, van Ravenzwaay B. Application of short-term inhalation studies to assess the inhalation toxicity of nanomaterials. Part Fibre Toxicol 2014; 11:16. [PMID: 24708749 PMCID: PMC4113196 DOI: 10.1186/1743-8977-11-16] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 03/11/2014] [Indexed: 11/29/2022] Open
Abstract
Background A standard short-term inhalation study (STIS) was applied for hazard assessment of 13 metal oxide nanomaterials and micron-scale zinc oxide. Methods Rats were exposed to test material aerosols (ranging from 0.5 to 50 mg/m3) for five consecutive days with 14- or 21-day post-exposure observation. Bronchoalveolar lavage fluid (BALF) and histopathological sections of the entire respiratory tract were examined. Pulmonary deposition and clearance and test material translocation into extra-pulmonary organs were assessed. Results Inhaled nanomaterials were found in the lung, in alveolar macrophages, and in the draining lymph nodes. Polyacrylate-coated silica was also found in the spleen, and both zinc oxides elicited olfactory epithelium necrosis. None of the other nanomaterials was recorded in extra-pulmonary organs. Eight nanomaterials did not elicit pulmonary effects, and their no observed adverse effect concentrations (NOAECs) were at least 10 mg/m3. Five materials (coated nano-TiO2, both ZnO, both CeO2) evoked concentration-dependent transient pulmonary inflammation. Most effects were at least partially reversible during the post-exposure period. Based on the NOAECs that were derived from quantitative parameters, with BALF polymorphonuclear (PMN) neutrophil counts and total protein concentration being most sensitive, or from the severity of histopathological findings, the materials were ranked by increasing toxic potency into 3 grades: lower toxic potency: BaSO4; SiO2.acrylate (by local NOAEC); SiO2.PEG; SiO2.phosphate; SiO2.amino; nano-ZrO2; ZrO2.TODA; ZrO2.acrylate; medium toxic potency: SiO2.naked; higher toxic potency: coated nano-TiO2; nano-CeO2; Al-doped nano-CeO2; micron-scale ZnO; coated nano-ZnO (and SiO2.acrylate by systemic no observed effect concentration (NOEC)). Conclusion The STIS revealed the type of effects of 13 nanomaterials, and micron-scale ZnO, information on their toxic potency, and the location and reversibility of effects. Assessment of lung burden and material translocation provided preliminary biokinetic information. Based upon the study results, the STIS protocol was re-assessed and preliminary suggestions regarding the grouping of nanomaterials for safety assessment were spelled out.
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Affiliation(s)
- Robert Landsiedel
- Experimental Toxicology and Ecology, BASF SE, 67056 Ludwigshafen, Germany.
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Zhao H, Dong Y, Tian X, Tan TK, Liu Z, Zhao Y, Zhang Y, Harris DCH, Zheng G. Matrix metalloproteinases contribute to kidney fibrosis in chronic kidney diseases. World J Nephrol 2013; 2:84-89. [PMID: 24255890 PMCID: PMC3832915 DOI: 10.5527/wjn.v2.i3.84] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Revised: 08/15/2013] [Accepted: 08/20/2013] [Indexed: 02/06/2023] Open
Abstract
Matrix metalloproteinases (MMPs) are members of the neutral proteinase family. They were previously thought to be anti-fibrotic because of their ability to degrade and remodel of extracellular matrix. However, recent studies have shown that MMPs are implicated in initiation and progression of kidney fibrosis through tubular cell epithelial–mesenchymal transition (EMT) as well as activation of resident fibroblasts, endothelial-mesenchymal transition (EndoMT) and pericyte-myofibroblast transdifferentiation. Interstitial macrophage infiltration has also been shown to correlate with the severity of kidney fibrosis in various chronic kidney diseases. MMPs secreted by macrophages, especially MMP-9, has been shown by us to be profibrotic by induction of tubular cells EMT. EMT is mainly induced by transforming growth factor-β (TGF-β). However, MMP-9 was found by us and others to be up-regulated by TGF-β1 in kidney tubular epithelial cells and secreted by activated macrophages, resulting in EMT and ultimately kidney fibrosis. Therefore, MMP-9 may serve as a potential therapeutic target to prevent kidney fibrosis in chronic kidney disease. This review, by a particular focus on EMT, seeks to provide a comprehensive understanding of MMPs, especially MMP-9, in kidney fibrosis.
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Tan TK, Zheng G, Hsu TT, Lee SR, Zhang J, Zhao Y, Tian X, Wang Y, Wang YM, Cao Q, Wang Y, Lee VWS, Wang C, Zheng D, Alexander SI, Thompson E, Harris DCH. Matrix metalloproteinase-9 of tubular and macrophage origin contributes to the pathogenesis of renal fibrosis via macrophage recruitment through osteopontin cleavage. J Transl Med 2013; 93:434-49. [PMID: 23358111 DOI: 10.1038/labinvest.2013.3] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A pro-fibrotic role of matrix metalloproteinase-9 (MMP-9) in tubular cell epithelial-mesenchymal transition (EMT) is well established in renal fibrosis; however studies from our group and others have demonstrated some previously unrecognized complexity of MMP-9 that has been overlooked in renal fibrosis. Therefore, the aim of this study was to determine the expression pattern, origin and the exact mechanism underlying the contribution of MMP-9 to unilateral ureteral obstruction (UUO), a well-established model of renal fibrosis via MMP-9 inhibition. Renal MMP-9 expression in BALB/c mice with UUO was examined on day 1, 3, 5, 7, 9, 11 and 14. To inhibit MMP-9 activity, MMP-2/9 inhibitor or MMP-9-neutralizing antibody was administered daily for 4 consecutive days from day 0-3, 6-9 or 10-13 and tissues harvested at day 14. In UUO, there was a bi-phasic early- and late-stage upregulation of MMP-9 activity. Interestingly, tubular epithelial cells (TECs) were the predominant source of MMP-9 during early stage, whereas TECs, macrophages and myofibroblasts produced MMP-9 during late-stage UUO. Early- and late-stage inhibition of MMP-9 in UUO mice significantly reduced tubular cell EMT and renal fibrosis. Moreover, MMP-9 inhibition caused a significant reduction in MMP-9-cleaved osteopontin and macrophage infiltration in UUO kidney. Our in vitro study showed MMP-9-cleaved osteopontin enhanced macrophage transwell migration and MMP-9 of both primary TEC and macrophage induced tubular cell EMT. In summary, our result suggests that MMP-9 of both TEC and macrophage origin may directly or indirectly contribute to the pathogenesis of renal fibrosis via osteopontin cleavage, which, in turn further recruit macrophage and induce tubular cell EMT. Our study also highlights the time dependency of its expression and the potential of stage-specific inhibition strategy against renal fibrosis.
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Affiliation(s)
- Thian Kui Tan
- Centre for Transplant and Renal Research, University of Sydney at Westmead Millennium Institute, Sydney, NSW, Australia
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Huizar I, Malur A, Patel J, McPeek M, Dobbs L, Wingard C, Barna BP, Thomassen MJ. The role of PPARγ in carbon nanotube-elicited granulomatous lung inflammation. Respir Res 2013; 14:7. [PMID: 23343389 PMCID: PMC3560264 DOI: 10.1186/1465-9921-14-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/15/2013] [Indexed: 01/04/2023] Open
Abstract
Background Although granulomatous inflammation is a central feature of many disease processes, cellular mechanisms of granuloma formation and persistence are poorly understood. Carbon nanoparticles, which can be products of manufacture or the environment, have been associated with granulomatous disease. This paper utilizes a previously described carbon nanoparticle granuloma model to address the issue of whether peroxisome proliferator-activated receptor gamma (PPARγ), a nuclear transcription factor and negative regulator of inflammatory cytokines might play a role in granulomatous lung disease. PPARγ is constitutively expressed in alveolar macrophages from healthy individuals but is depressed in alveolar macrophages of patients with sarcoidosis, a prototypical granulomatous disease. Our previous study of macrophage-specific PPARγ KO mice had revealed an intrinsically inflammatory pulmonary environment with an elevated pro-inflammatory cytokines profile as compared to wild-type mice. Based on such observations we hypothesized that PPARγ expression would be repressed in alveolar macrophages from animals bearing granulomas induced by MWCNT instillation. Methods Wild-type C57Bl/6 and macrophage-specific PPARγ KO mice received oropharyngeal instillations of multiwall carbon nanotubes (MWCNT) (100 μg). Bronchoalveolar lavage (BAL) cells, BAL fluids, and lung tissues were obtained 60 days post-instillation for analysis of granuloma histology and pro-inflammatory cytokines (osteopontin, CCL2, and interferon gamma [IFN-γ] mRNA and protein expression. Results In wild-type mice, alveolar macrophage PPARγ expression and activity were significantly reduced in granuloma-bearing animals 60 days after MWCNT instillation. In macrophage-specific PPARγ KO mice, granuloma formation was more extensive than in wild-type at 60 days after MWCNT instillation. PPARγ KO mice also demonstrated elevated pro-inflammatory cytokine expression in lung tissue, laser-microdissected lung granulomas, and BAL cells/fluids, at 60 days post MWCNT exposure. Conclusions Overall, data indicate that PPARγ deficiency promotes inflammation and granuloma formation, suggesting that PPARγ functions as a negative regulator of chronic granulomatous inflammation.
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Affiliation(s)
- Isham Huizar
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, The Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
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Zhao JJ, Yang L, Zhao FQ, Shi SM, Tan P. Osteopontin levels are elevated in patients with asthma. J Int Med Res 2012; 39:1402-7. [PMID: 21986140 DOI: 10.1177/147323001103900426] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Osteopontin (OPN) plays a role in T cell-mediated immunity, but its involvement in Th2-associated allergic responses, especially asthma, has not been investigated. This cross-sectional case-control study was designed to determine whether serum OPN levels are elevated in asthma patients and whether these correlated with disease severity. Serum samples were obtained from patients with mild (n = 42), moderate (n = 48) and severe (n = 39) asthma, and 41 healthy control subjects. OPN protein concentrations were measured by enzyme-linked immuno sorbent assay and were found to be significantly higher in all three asthma patient groups compared with healthy controls. There was no significant association between OPN concentration and disease severity. The data suggest a role for OPN in the pathogenesis of asthma. Further studies are needed to clarify the involvement of OPN in various aspects of asthma.
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Affiliation(s)
- J-J Zhao
- China-Japan Union Hospital of Ji Lin University, Changchun, China
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Konno S, Kurokawa M, Uede T, Nishimura M, Huang SK. Role of osteopontin, a multifunctional protein, in allergy and asthma. Clin Exp Allergy 2011; 41:1360-6. [PMID: 21623969 DOI: 10.1111/j.1365-2222.2011.03775.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Osteopontin (OPN) is an extracellular matrix protein and immune modulator with a wide range of functions. OPN is recognized as a key cytokine in Th1 immune responses, yet its potential involvement in allergic/asthmatic responses has been investigated only recently. Current data from molecular and cellular studies and studies of OPN-deficient mice provide evidence that OPN plays multiple roles in the regulation of allergic responses, including regulation of IgE response, inflammatory cell migration, and the development of airway fibrosis and angiogenesis. These results suggest that OPN is a pleiotropic cytokine that functions both systemically and locally in tissue mucosa. Notably, OPN is able to exert its effects through different functional domains, and the secreted and intracellular forms of OPN may have distinct functions. Future research to elucidate all aspects of OPN function is needed to ultimately establish its role in the regulation of immune responses and various disease processes, including those critically involved in the development of allergies and asthma.
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Affiliation(s)
- S Konno
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan.
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Subbian S, Tsenova L, O'Brien P, Yang G, Koo MS, Peixoto B, Fallows D, Zeldis JB, Muller G, Kaplan G. Phosphodiesterase-4 inhibition combined with isoniazid treatment of rabbits with pulmonary tuberculosis reduces macrophage activation and lung pathology. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:289-301. [PMID: 21703411 DOI: 10.1016/j.ajpath.2011.03.039] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 03/18/2011] [Accepted: 03/29/2011] [Indexed: 01/12/2023]
Abstract
Tuberculosis (TB) is responsible for significant morbidity and mortality worldwide. Even after successful microbiological cure of TB, many patients are left with residual pulmonary damage that can lead to chronic respiratory impairment and greater risk of additional TB episodes due to reinfection with Mycobacterium tuberculosis. Elevated levels of the proinflammatory cytokine tumor necrosis factor-α and several other markers of inflammation, together with expression of matrix metalloproteinases, have been associated with increased risk of pulmonary fibrosis, tissue damage, and poor treatment outcomes in TB patients. In this study, we used a rabbit model of pulmonary TB to evaluate the impact of adjunctive immune modulation, using a phosphodiesterase-4 inhibitor that dampens the innate immune response, on the outcome of treatment with the antibiotic isoniazid. Our data show that cotreatment of M. tuberculosis infected rabbits with the phosphodiesterase-4 inhibitor CC-3052 plus isoniazid significantly reduced the extent of immune pathogenesis, compared with antibiotic alone, as determined by histologic analysis of infected tissues and the expression of genes involved in inflammation, fibrosis, and wound healing in the lungs. Combined treatment with an antibiotic and CC-3052 not only lessened disease but also improved bacterial clearance from the lungs. These findings support the potential for adjunctive immune modulation to improve the treatment of pulmonary TB and reduce the risk of chronic respiratory impairment.
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Affiliation(s)
- Selvakumar Subbian
- Laboratory of Mycobacterial Immunity and Pathogenesis, The Public Health Research Institute at the University of Medicine and Dentistry of New Jersey, Newark, NJ 07103, USA
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Abstract
The secreted phosphorylated protein osteopontin (OPN) is expressed in a variety of tissues and bodily fluids, and is associated with pathologies including tissue injury, infection, autoimmune disease and cancer. Macrophages are ubiquitous, heterogeneous cells that mediate aspects of cell and tissue damage in all these pathologies. Here, the role of OPN in macrophage function is reviewed. OPN is expressed in macrophage cells in multiple pathologies, and the regulation of its expression in these cells has been described in vitro. The protein has been implicated in multiple functions of macrophages, including cytokine expression, expression of inducible nitric oxide synthase, phagocytosis and migration. Indeed, the role of OPN in cells of the macrophage lineage might underlie its physiological role in many pathologies. However, there are numerous instances where the published literature is inconsistent, especially in terms of OPN function in vitro. Although the heterogeneity of OPN and its receptors, or of macrophages themselves, might underlie some of these inconsistencies, it is important to understand the role of OPN in macrophage biology in order to exploit its function therapeutically.
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Huizar I, Malur A, Midgette YA, Kukoly C, Chen P, Ke PC, Podila R, Rao AM, Wingard CJ, Dobbs L, Barna BP, Kavuru MS, Thomassen MJ. Novel murine model of chronic granulomatous lung inflammation elicited by carbon nanotubes. Am J Respir Cell Mol Biol 2011; 45:858-66. [PMID: 21398620 DOI: 10.1165/rcmb.2010-0401oc] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Lung granulomas are associated with numerous conditions, including inflammatory disorders, exposure to environmental pollutants, and infection. Osteopontin is a chemotactic cytokine produced by macrophages, and is implicated in extracellular matrix remodeling. Furthermore, osteopontin is up-regulated in granulomatous disease, and osteopontin null mice exhibit reduced granuloma formation. Animal models currently used to investigate chronic lung granulomatous inflammation bear a pathological resemblance, but lack the chronic nature of human granulomatous disease. Carbon nanoparticles are generated as byproducts of combustion. Interestingly, experimental exposures to carbon nanoparticles induce pulmonary granuloma-like lesions. However, the recruited cellular populations and extracellular matrix gene expression profiles within these lesions have not been explored. Because of the rapid resolution of granulomas in current animal models, the mechanisms responsible for persistence have been elusive. To overcome the limitations of previous models, we investigated whether a model using multiwall carbon nanoparticles would resemble chronic human lung granulomatous inflammation. We hypothesized that pulmonary exposure to multiwall carbon nanoparticles would induce granulomas, elicit a macrophage and T-cell response, and mimic other granulomatous disorders with an up-regulation of osteopontin. This model demonstrates: (1) granulomatous inflammation, with macrophage and T-cell infiltration; (2) resemblance to the chronicity of human granulomas, with persistence up to 90 days; and (3) a marked elevation of osteopontin, metalloproteinases, and cell adhesion molecules in granulomatous foci isolated by laser-capture microdissection and in alveolar macrophages from bronchoalveolar lavage. The establishment of such a model provides an important platform for mechanistic studies on the persistence of granuloma.
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Affiliation(s)
- Isham Huizar
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Brody School of Medicine, East Carolina University, 3E-149 Brody Medical Sciences Building, Greenville, NC 27834, USA.
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Langley RJ, Mishra NC, Peña-Philippides JC, Rice BJ, Seagrave JC, Singh SP, Sopori ML. Fibrogenic and redox-related but not proinflammatory genes are upregulated in Lewis rat model of chronic silicosis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2011; 74:1261-79. [PMID: 21830856 PMCID: PMC4058997 DOI: 10.1080/15287394.2011.595669] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Silicosis, a fibrotic granulomatous lung disease, may occur through accidental high-dose or occupational inhalation of silica, leading to acute/accelerated and chronic silicosis, respectively. While chronic silicosis has a long asymptomatic latency, lung inflammation and apoptosis are hallmarks of acute silicosis. In animal models, histiocytic granulomas develop within days after high-dose intratracheal (IT) silica instillation. However, following chronic inhalation of occupationally relevant doses of silica, discrete granulomas resembling human silicosis arise months after the final exposure without significant lung inflammation/apoptosis. To identify molecular events associated with chronic silicosis, lung RNA samples from controls or subchronic silica-exposed rats were analyzed by Affymetrix at 28 wk after silica exposures. Results suggested a significant upregulation of 144 genes and downregulation of 7 genes. The upregulated genes included complement cascade, chemokines/chemokine receptors, G-protein signaling components, metalloproteases, and genes associated with oxidative stress. To examine the kinetics of gene expression relevant to silicosis, quantitative polymerase chain reaction (qPCR), enzyme-linked immunosorbent assay (ELISA), Luminex-bead assays, Western blotting, and/or zymography were performed on lung tissues from 4 d, 28 wk, and intermediate times after subchronic silica exposure and compared with 14-d acute silicosis samples. Results indicated that genes regulating fibrosis (secreted phosphoprotein-1, Ccl2, and Ccl7), redox enzymes (superoxide dismutase-2 and arginase-1), and the enzymatic activities of matrix metalloproteinases 2 and 9 were upregulated in acute and chronic silicosis models. However, proinflammatory cytokines were strongly upregulated only in acute silicosis. Thus, inflammatory cytokines are associated with acute but not chronic silicosis. Data suggest that genes regulating fibrosis, oxidative stress, and metalloproteases may contribute to both acute and chronic silicosis.
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Affiliation(s)
- Raymond J. Langley
- Immunology Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
| | - Neerad C. Mishra
- Immunology Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
| | | | - Brandon J. Rice
- Software Engineering Division, National Center for Genome Resources, 2935 Rodeo Park Dr., SE, Santa Fe, NM 87505
| | - Jean-Clare Seagrave
- Immunology Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
| | - Shashi P. Singh
- Immunology Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
| | - Mohan L. Sopori
- Immunology Program, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
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Ma JE, Lee SH, Kim YE, Lim SJ, Lee SJ, Jeong YY, Kim HC, Lee JD, Hwang YS, Cho YJ. Comparison of Serum Osteopontin Levels in Patients with Stable and Chronic Obstructive Pulmonary Disease and Exacerbation. Tuberc Respir Dis (Seoul) 2011. [DOI: 10.4046/trd.2011.71.3.195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jeong Eun Ma
- Department of Internal Medicine, Keun Sarang Hospital, Changwon, Korea
| | - Seung Hun Lee
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yu Eun Kim
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Su Jin Lim
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Seung Jun Lee
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yi Yeong Jeong
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Ho Cheol Kim
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jong Deog Lee
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Young Sil Hwang
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yu Ji Cho
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
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Kurokawa M, Konno S, Takahashi A, Plunkett B, Rittling SR, Matsui Y, Kon S, Morimoto J, Uede T, Matsukura S, Kokubu F, Adachi M, Nishimura M, Huang SK. Regulatory role of DC-derived osteopontin in systemic allergen sensitization. Eur J Immunol 2010; 39:3323-30. [PMID: 19830723 DOI: 10.1002/eji.200838970] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Osteopontin (OPN) is a secreted phosphoglycoprotein with a wide range of functions, and is involved in various pathophysiological conditions. However, the role of OPN in IgE and Th2-associated allergic responses remains incompletely defined. The aim of this study was to elucidate the role of OPN in systemic allergen sensitization in mice. When compared with OPN(+/+) mice, significantly increased levels of OVA-induced IgE were found in OPN(-/-) mice. OPN(-/-) DC demonstrated an increased capacity to enhance Th2 cytokine production in CD4+ T cells from sensitized OPN(+/+) mice. Furthermore, significantly reduced levels of IL-12p70 expression were seen in LPS-stimulated OPN(-/-) DC as compared with the WT DC, and the reduction was reversible by the addition of recombinant OPN (rOPN). rOPN was able to suppress OVA-induced IL-13 production in the cultures of CD4 and OPN(-/-) DC, but this inhibitory activity was neutralized by the addition of anti-IL-12 Ab. In addition, administration of rOPN in vivo suppressed OVA-specific IgE production; however, this suppressive effect was abrogated in IL-12-deficient mice. These results indicate that DC-derived OPN plays a regulatory role in the development of systemic allergen sensitization, which is mediated, at least in part, through the production of endogenous IL-12.
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da Silva APB, Ellen RP, Sørensen ES, Goldberg HA, Zohar R, Sodek J. Osteopontin attenuation of dextran sulfate sodium-induced colitis in mice. J Transl Med 2009; 89:1169-81. [PMID: 19668240 DOI: 10.1038/labinvest.2009.80] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Osteopontin (OPN) is a matricellular cytokine present in most tissues and body fluids; it is known to modulate immune responses. In previous studies using the dextran sulfate sodium (DSS) acute colitis model, we found exacerbated tissue destruction and reduced repair in OPN-null ((-/-)) mice compared with wild-type (WT) controls. As OPN is normally present in milk, we hypothesized that administration of OPN may protect the intestines from the adverse effects of experimental colitis. A volume of 20 or 2 microg/ml bovine milk OPN, dissolved in drinking water, was given to mice 24 h before, and during administration of DSS. Clinical parameters of colitis and neutrophil functions were analyzed as previously reported. Orally administered OPN was absorbed and detected in the colon mucosa by immunohistochemistry. The 20 microg/ml OPN- and DSS-treated WT mice showed 37% less weight loss and reduced colon shortening and spleen enlargements than control mice (P<0.05). OPN administration also reduced the disease activity index, improved red blood cell counts, and reduced gut neutrophil activity compared with the DSS-treated WT mice that were not administered OPN (P<0.05). Immunohistochemical detection of F4/80-labelled cells (macrophages) was also less frequent. The level of transforming growth factor beta1 (TGF-beta1) was increased and the levels of pro-inflammatory mediators decreased in colon tissue samples of OPN-treated mice analyzed by ELISA. The reversal of experimental colitis parameters by exogenous OPN was not as robust in the OPN(-/-) mice. Administration of prokaryotic-expressed recombinant OPN and bovine serum albumin were ineffective. This study shows that administration of a physiological concentration of milk OPN in drinking water ameliorates the destructive host response in DSS-induced acute colitis.
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Hwang MH, Choi MJ, Park SC. Mycoplasma hyopneumoniae Induces Grap, Gadd45β, and secreted phosphoprotein 1 Gene Expression as Part of the Inflammatory Response in RAW264.7 Cells. Toxicol Res 2009; 25:119-124. [PMID: 32038829 PMCID: PMC7006252 DOI: 10.5487/tr.2009.25.3.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 08/01/2009] [Accepted: 08/04/2009] [Indexed: 11/20/2022] Open
Abstract
Genes related to Mycoplasma hyopneumoniae-induced inflammation were identified using the gene-fishing technology, an improved method for identifying differentially expressed genes (DEGs) using an annealing control primer (ACP) system in RAW264.7 cells. After treatment with M. hyopneumo-niae, 16 DEGs were expressed in RAW264.7 cells using a pre-screening system. Among these 16 DEGs, 11 DEGs (DEGs 1, 4, 5-10, 12-15) were selected and sequenced directly, revealing that DEG12 (Grap), DEG14 (Gadd45), and DEG15 (secreted phosphoprotein 1) were related to inflammatory cytokines. This is the first report that intact M. hyopneumoniae induces the expression of Grap, Gadd 45β, and secreted phosphoprotein 1 in RAW264.7 cells. Subsequently, these genes may be targets for screening novel inhibitors of the mycoplasmal inflammatory response.
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Affiliation(s)
- Mi-Hyun Hwang
- Laboratory of Veterinary Pharmacokinetics & Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701 Korea
| | - Myung-Jin Choi
- Laboratory of Veterinary Pharmacokinetics & Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701 Korea
| | - Seung-Chun Park
- Laboratory of Veterinary Pharmacokinetics & Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu, 702-701 Korea
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Buback F, Renkl AC, Schulz G, Weiss JM. Osteopontin and the skin: multiple emerging roles in cutaneous biology and pathology. Exp Dermatol 2009; 18:750-9. [PMID: 19558497 DOI: 10.1111/j.1600-0625.2009.00926.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Osteopontin (OPN) is a glycoprotein expressed by various tissues and cells. The existence of variant forms of OPN as a secreted (sOPN) and intracellular (iOPN) protein and its modification through post-translational modification and proteolytic cleavage explain its broad range of functions. There is increasing knowledge which receptors OPN isoforms can bind to and which signaling pathways are activated to mediate different OPN functions. sOPN interacts with integrins and CD44, mediates cell adhesion, migration and tumor invasion, and has T helper 1 (Th1) cytokine functions and anti-apoptotic effects. iOPN has been described to regulate macrophage migration and interferon-alpha secretion in plasmacytoid dendritic cells. Both sOPN and iOPN, through complex functions for different dendritic cell subsets, participate in the regulation of Th cell lineages, among them Th17 cells. For skin disease, OPN from immune cells and tumor cells is of pathophysiological relevance. OPN is secreted in autoimmune diseases such as lupus erythematosus, and influences inflammation of immediate and delayed type allergies and granuloma formation. We describe that OPN is overexpressed in psoriasis and propose a model to study OPN function in psoriatic inflammation. Through cytokine functions, OPN supports immune responses against Mycobacteria and viruses such as herpes simplex virus. OPN is also implicated in skin tumor progression. Overexpression of OPN influences invasion and metastasis of melanoma and squamous cell carcinoma cells, and OPN expression in melanoma is a possible prognostic marker. As OPN protein preparations and anti-OPN antibodies may be available in the near future, in-depth knowledge of OPN functions may open new therapeutic approaches for skin diseases.
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Affiliation(s)
- Franziska Buback
- Department of Dermatology and Allergology, University of Ulm, Ulm, Germany
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Takahashi A, Kurokawa M, Konno S, Ito K, Kon S, Ashino S, Nishimura T, Uede T, Hizawa N, Huang SK, Nishimura M. Osteopontin is involved in migration of eosinophils in asthma. Clin Exp Allergy 2009; 39:1152-9. [PMID: 19400906 DOI: 10.1111/j.1365-2222.2009.03249.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Osteopontin (OPN) is an extracellular matrix protein with a wide range of functions, and is involved in various inflammatory diseases. However, the role of OPN in eosinophilic airway inflammation is unclear. OBJECTIVE To elucidate the role of OPN in eosinophilic airway inflammation. METHODS OPN protein levels in induced sputum from asthmatic patients and healthy controls were measured. Eosinophil migration assays were performed in the presence or absence of OPN, a blocking antibody (Ab) recognizing its integrin-binding domain (2K1) and an anti-integrin alpha 4 Ab (P1H4). In the mouse asthma model, the levels of eosinophilia were examined in bronchoalveolar lavage fluids (BALFs) from ovalbumin (OVA)-sensitized and -challenged mice with or without administration of an Ab (M5) corresponding to human 2K1. RESULTS Levels of OPN in induced sputum were significantly higher in asthmatic patients when compared with healthy controls. In addition, levels of OPN were correlated with the percentage of sputum eosinophils. OPN induced significant migration of human eosinophils and this effect was inhibited by 2K1 and P1H4. M5 significantly attenuated OVA-induced eosinophilia in BALFs. CONCLUSION These results indicate that OPN plays a role in the migration of eosinophils into the airways and may be involved in the pathogenesis of asthma.
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Affiliation(s)
- A Takahashi
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Hokkaido, Japan
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Cho HJ, Cho HJ, Kim HS. Osteopontin: A multifunctional protein at the crossroads of inflammation, atherosclerosis, and vascular calcification. Curr Atheroscler Rep 2009; 11:206-13. [DOI: 10.1007/s11883-009-0032-8] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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van der Windt GJW, Wieland CW, Wiersinga WJ, Florquin S, van der Poll T. Osteopontin is not crucial to protective immunity during murine tuberculosis. Immunology 2009; 128:e766-76. [PMID: 19740338 DOI: 10.1111/j.1365-2567.2009.03081.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Upon infection with Mycobacterium (M.) tuberculosis, the development of a strong T helper 1 (Th1)-mediated adaptive immune response is considered as being most important for containment of the infection. Osteopontin (OPN) is a phosphorylated glycoprotein that is chemotactic for inflammatory cells and has been implicated in the induction of Th1 responses and granulomatous disease. We tested the hypothesis that OPN facilitates protective immunity during M. tuberculosis infection using wild-type (WT) and OPN knockout (KO) mice in a model of pulmonary tuberculosis. OPN expression was up-regulated in alveolar macrophages and lymphoid cells during M. tuberculosis infection. There were no significant differences in bacterial outgrowth, inflammation or recruitment of lymphocytes, macrophages and polymorphonuclear cells in the lungs after 2 and 5 weeks of infection. However, the numbers of CD4(+) and CD8(+) T cells were reduced in the absence of OPN 5 weeks after infection. Similar concentrations of cytokine were observed in lungs from both WT mice and OPN KO mice; however, there was a trend towards decreased levels of interferon-gamma (IFN-gamma) in OPN KO mice 5 weeks after infection. Despite an unaltered immune response in the early phase of tuberculosis, OPN KO mice had a modest survival advantage. Of note, both pulmonary bacterial loads and lung inflammation were reduced in these mice 31 weeks after infection. These data suggest that OPN is not crucial for protective immunity upon M. tuberculosis infection and during the late phase of tuberculosis may even be detrimental for the host.
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Wang KX, Denhardt DT. Osteopontin: role in immune regulation and stress responses. Cytokine Growth Factor Rev 2008; 19:333-45. [PMID: 18952487 DOI: 10.1016/j.cytogfr.2008.08.001] [Citation(s) in RCA: 516] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recent research has led to a better but as yet incomplete understanding of the complex roles osteopontin plays in mammalian physiology. A soluble protein found in all body fluids, it stimulates signal transduction pathways (via integrins and CD44 variants) similar to those stimulated by components of the extracellular matrix. This appears to promote the survival of cells exposed to potentially lethal insults such as ischemia/reperfusion or physical/chemical trauma. OPN is chemotactic for many cell types including macrophages, dendritic cells, and T cells; it enhances B lymphocyte immunoglobulin production and proliferation. In inflammatory situations it stimulates both pro- and anti-inflammatory processes, which on balance can be either beneficial or harmful depending on what other inputs the cell is receiving. OPN influences cell-mediated immunity and has been shown to have Th1-cytokine functions. OPN deficiency is linked to a reduced Th1 immune response in infectious diseases, autoimmunity and delayed type hypersensitivity. OPN's role in the central nervous system and in stress responses has also emerged as an important aspect related to its cytoprotective and immune functions. Evidence suggests that either OPN or anti-OPN monoclonal antibodies (depending on the circumstances) might be clinically useful in modulating OPN function. Manipulation of plasma OPN levels may be useful in the treatment of autoimmune disease, cancer metastasis, osteoporosis and some forms of stress.
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Affiliation(s)
- Kathryn X Wang
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854, United States.
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Vaschetto R, Nicola S, Olivieri C, Boggio E, Piccolella F, Mesturini R, Damnotti F, Colombo D, Navalesi P, Della Corte F, Dianzani U, Chiocchetti A. Serum levels of osteopontin are increased in SIRS and sepsis. Intensive Care Med 2008; 34:2176-84. [DOI: 10.1007/s00134-008-1268-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2008] [Accepted: 08/23/2008] [Indexed: 12/12/2022]
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Zhao L, Li T, Wang Y, Pan Y, Ning H, Hui X, Xie H, Wang J, Han Y, Liu Z, Fan D. Elevated plasma osteopontin level is predictive of cirrhosis in patients with hepatitis B infection. Int J Clin Pract 2008; 62:1056-62. [PMID: 17537188 DOI: 10.1111/j.1742-1241.2007.01368.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Osteopontin (OPN) was shown to play an important role in the pathogenesis of various inflammatory and fibrotic processes and elevated in fibrotic liver of mouse model. However, the significance of OPN in hepatitis B virus (HBV)-induced liver cirrhosis (LC) remains unclear and is therefore evaluated in this study. METHODS Thirty-nine patients with HBV-induced LC, 30 patients with HBV infection but without cirrhosis, 11 patients with HBV-related hepatocellular carcinoma (HCC) and 14 additional healthy controls were enrolled in this study. Plasma levels of OPN were measured with enzyme-linked immunosorbent assay and the relationship between OPN and clinical parameters was evaluated. RESULTS When compared to HBV infection group (median 2.16 ng/ml), plasma levels of OPN were significantly increased in cirrhosis (4.52 ng/ml, p < 0.001) and cancer group (13.38 ng/ml, p < 0.001). The OPN level was correlated with the severity of liver damage according to Child-Pugh classification (p = 0.003). It showed at least comparable sensitivity and specificity to predict cirrhosis as aspartate aminotransferase to platelet ratio index, a previously established non-invasive serum marker of cirrhosis. CONCLUSIONS These data suggest that OPN could be used to evaluate the existence of LC, as OPN has previously been reported to be increased in the HCC; this unique feature makes OPN a promising candidate for prediction biomarker in the long-time surveillance of patients with HBV infection to evaluate the risk of cirrhosis and cancer.
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Affiliation(s)
- L Zhao
- State Key Laboratory of Cancer Biology & Institute of Gastroenterology, Xijing Hospital, The Fourth Military Medical University, Xi'an, Beijing, China.
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Sato I, Yamamoto N, Rittling SR, Denhardt DT, Hino M, Morimoro J, Sakai F, Fujie A, Uede T. Osteopontin is dispensable for protection against high load systemic fungal infection. Int Immunopharmacol 2008; 8:1441-8. [PMID: 18590834 DOI: 10.1016/j.intimp.2008.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 06/04/2008] [Accepted: 06/04/2008] [Indexed: 11/17/2022]
Abstract
Osteopontin (OPN) is a multi-functional cytokine which is involved in the pathogenesis of autoimmune disease. We previously reported that thrombin-cleaved form of OPN plays a pathogenic role in murine model of rheumatoid arthritis (RA) by using neutralizing antibody (M5) reacting against the cryptic epitope within OPN, exposed by thrombin cleavage of OPN. It has been shown that OPN-deficient mice are susceptible to various infections, demonstrating the protective role of OPN against various infectious diseases. However, it remains to be clarified whether and how OPN is involved in protection against systemic fungal infection. In a murine model of systemic fungal infection, OPN-deficient mice showed the increase in the susceptibility to low load, but not to high load fungal infection, indicating the protective of OPN against mild or severe forms of infections. However, mice treatment with M5 antibody did not alter the susceptibility to both high and low load fungal infection. These experiments suggest that in sharp contrast to the complete abrogation of OPN expression in OPN-deficient mice, the neutralization of OPN by antibody against thrombin-cleaved form of OPN does not interfere with the host defense against high and low load fungal infection. These findings suggest that the neutralizing antibody which is specific for the epitope of thrombin-cleaved OPN may become an attractive therapeutic means for the treatment of RA without interfering host defense system.
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Affiliation(s)
- Ikuko Sato
- Fermentation Research Laboratories, Astellas Pharmaceutical Inc., Tokodai 5-2-3, Tsukuba, Ibaraki, 300-2698, Japan
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Koh A, da Silva APB, Bansal AK, Bansal M, Sun C, Lee H, Glogauer M, Sodek J, Zohar R. Role of osteopontin in neutrophil function. Immunology 2007; 122:466-75. [PMID: 17680800 PMCID: PMC2266047 DOI: 10.1111/j.1365-2567.2007.02682.x] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Osteopontin (OPN) is important for the function of fibroblasts, macrophages and lymphocytes during inflammation and wound healing. In recent studies of experimental colitis we demonstrated exacerbated tissue destruction in OPN-null mice, associated with reduced tumour necrosis factor-alpha expression and increased myeloperoxidase activity. The objective of this investigation therefore was to determine the importance of OPN expression in neutrophil function. Although, in contrast to macrophages, neutrophils expressed low levels of OPN with little or no association with the CD44 receptor, intraperitoneal recruitment of neutrophils in OPN-null mice was impaired in response to sodium periodate. The importance of exogenous OPN for neutrophil recruitment was demonstrated by a robust increase in peritoneal infiltration of PMNs in response to injections of native or recombinant OPN. In vitro, OPN(-/-) neutrophils exhibited reduced chemokinesis and chemotaxis towards N-formyl methionyl leucyl phenylalanine (fMLP), reflecting a reduction in migration speed and polarization. Exogenous OPN, which was chemotactic for the neutrophils, rescued the defects in polarization and migration speed of the OPN(-/-) neutrophils. In contrast, the defensive and cytocidal activities of OPN(-/-) neutrophils, measured by assays for phagocytosis, generation of reactive oxygen species, cytokine production and matrix metalloproteinase-9, were not impaired. These studies demonstrate that, while exogenous OPN may be important for the recruitment and migration of neutrophils, expression of OPN by neutrophils is not required for their destructive capabilities.
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Affiliation(s)
- Adeline Koh
- CIHR Group in Matrix Dynamics, Faculty of Dentistry, Department of Biochemistry, University of Toronto, Toronto, ONT, Canada
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Abstract
The immunopathogenesis of sarcoidosis has been difficult to charaterize given the heterogeneity of disease, the elusiveness of the causative antigen, and the lack of an adequate animal model. However, by examining well-defined clinical cohorts, the interplay between genetic predisposition and immunologic response has been increasingly informative. Technological advances in cellular analysis have allowed researchers to characterize the immune responses important in the maintenance of granulomatous inflammation. Finally, "new" clinical observations such as granuloma responsiveness to targeted biological therapies, sarcoid developing during immune restoration, and the relationship between sarcoidosis and Hepatitis C will provide future insight to the immunopathogenesis of sarcoidosis.
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Affiliation(s)
- Aliya Noor
- Division of Pulmonary and Critical Care Medicine, Indiana University and the Richard L. Roudebush VA Medical Center, Indianapolis, IN
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Hashimoto M, Sun D, Rittling SR, Denhardt DT, Young W. Osteopontin-deficient mice exhibit less inflammation, greater tissue damage, and impaired locomotor recovery from spinal cord injury compared with wild-type controls. J Neurosci 2007; 27:3603-11. [PMID: 17392476 PMCID: PMC6672107 DOI: 10.1523/jneurosci.4805-06.2007] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Osteopontin (OPN) is expressed in many tissues during inflammatory responses. After spinal cord injury, microglia expresses OPN at the site of injury during the early to subacute stages. However, the function of OPN in spinal cord injury is not well understood. This study examines the responses of OPN knock-out (KO) and wild-type (WT) mice to spinal cord contusion injury. KO and WT mice were injured with a modified New York University impactor. Weights of 10 or 5.6 g were dropped 6.25 mm onto the T13 spinal cord under isoflurane anesthesia. At 24 h, homogenized spinal cords were analyzed for total potassium concentration to estimate lesion volumes. Expression of apoptotic genes, proinflammatory cytokines, and nerve growth factors was measured by reverse transcription (RT)-PCR and Western blot. In a series of animals, locomotor recovery was assessed with the Basso mouse scale (BMS) for 6 weeks, and histological analyses was performed to determine tissue preservation. Lesion volume showed no significant differences between KO and WT mice at 24 h. RT-PCR indicated that KO mice had significantly less Bcl-2, tumor necrosis factor-alpha, interleukin-1beta, and interleukin-6 mRNA compared with WT controls. Western blot also showed that KO had significantly less Bcl-2 7 d after spinal cord injury. KO mice had significantly worse BMS locomotor scores than WT at 6 weeks. KO mice also had a significantly reduced area of spared white matter and fewer neuronal-specific nuclear protein-positive neurons in the spinal cord surrounding the impact site. This result supports a potential neuroprotective role for OPN in the inflammatory response to spinal cord injury.
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Affiliation(s)
| | - Dongming Sun
- W. M. Keck Center for Collaborative Neuroscience and
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, and
| | | | - David T. Denhardt
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, and
| | - Wise Young
- W. M. Keck Center for Collaborative Neuroscience and
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey 08854, and
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