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Liu H, Nie H, Shi Y, Lai W, Bian L, Tian L, Li K, Xi Z, Lin B. Oil mistparticulate matter exposure induces hyperlipidemia-related inflammation via microbiota/ SCFAs/GPR43 axis inhibition and TLR4/NF-κB activation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123331. [PMID: 38199482 DOI: 10.1016/j.envpol.2024.123331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/22/2023] [Accepted: 01/07/2024] [Indexed: 01/12/2024]
Abstract
Metabolites produced by the human gut microbiota play an important role in fighting and intervening in inflammatory diseases. It remains unknown whether immune homeostasis is influenced by increasing concentrations of air pollutants such as oil mist particulate matters (OMPM). Herein, we report that OMPM exposure induces a hyperlipidemia-related phenotype through microbiota dysregulation-mediated downregulation of the anti-inflammatory short-chain fatty acid (SCFA)-GPR43 axis and activation of the inflammatory pathway. A rat model showed that exposure to OMPM promoted visceral and serum lipid accumulation and inflammatory cytokine upregulation. Furthermore, our research indicated a reduction in both the "healthy" microbiome and the production of SCFAs in the intestinal contents following exposure to OMPM. The SCFA receptor GPR43 was downregulated in both the ileum and white adipose tissues (WATs). The OMPM treatment mechanism was as follows: the gut barrier was compromised, leading to increased levels of lipopolysaccharide (LPS). This increase activated the Toll-like receptor 4 Nuclear Factor-κB (TLR4-NF-κB) signaling pathway in WATs, consequently fueling hyperlipidemia-related inflammation through a positive-feedback circuit. Our findings thus imply that OMPM pollution leads to hyperlipemia-related inflammation through impairing the microbiota-SCFAs-GPR43 pathway and activating the LSP-induced TLR4-NF-κB cascade; our findings also suggest that OMPM pollution is a potential threat to humanmicrobiota dysregulation and the occurrence of inflammatory diseases.
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Affiliation(s)
- Huanliang Liu
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China.
| | - Huipeng Nie
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Yue Shi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Wenqing Lai
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Liping Bian
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Lei Tian
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Kang Li
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Zhuge Xi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China
| | - Bencheng Lin
- Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin, 300050, China.
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Fan JF, Wang YK, Liu M, Liu GS, Min TJ, Chen RY, He Y. Effect of angiotensin II on irradiation exacerbated decompression sickness. Sci Rep 2023; 13:11659. [PMID: 37468556 DOI: 10.1038/s41598-023-38752-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023] Open
Abstract
In some complicated situations, decompression sickness (DCS) combined with other injuries, such as irradiation, will seriously endanger life safety. However, it is still unclear whether irradiation will increase the incidence of DCS. This study was designed to investigate the damage effects of irradiation on decompression injury and the underlying mechanism. Sprague-Dawley rats were exposed to irradiation followed by hyperbaric decompressing and the mortality and decompression symptoms were observed. Lung tissue and bronchoalveolar lavage fluid were collected to detect the lung lesion, inflammation response, activity of the angiotensin system, oxidative stress, and relative signal pathway by multiple methods, including Q-PCR, western blot, and ELISA. As a result, pre-exposure to radiation significantly exacerbated disease outcomes and lung lesions of DCS. Mechanically, the up-regulation of angiotensin-converting enzyme expression and angiotensin II levels was responsible for the exacerbated DCS and lung lesions caused by predisposing irradiation exposure. Oxidative stress and PI3K/AKT signal pathway activation in pulmonary tissue were enhanced after irradiation plus decompression treatment. In conclusion, our results suggested that irradiation could exacerbate lung injury and the outcomes of DCS by activating the angiotensin system, which included eliciting oxidative stress and activation of the PI3K/AKT signal pathway.
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Affiliation(s)
- Jie-Fu Fan
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Yang-Kai Wang
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Min Liu
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Guang-Sheng Liu
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Tian-Jiao Min
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Rui-Yong Chen
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China.
| | - Ying He
- Naval Medical Center of PLA, Naval Medical University (Second Military Medical University), Shanghai, China.
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S100A6 Protein-Expression and Function in Norm and Pathology. Int J Mol Sci 2023; 24:ijms24021341. [PMID: 36674873 PMCID: PMC9866648 DOI: 10.3390/ijms24021341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/13/2023] Open
Abstract
S100A6, also known as calcyclin, is a calcium-binding protein belonging to the S100 protein family. It was first identified and purified more than 30 years ago. Initial structural studies, focused mostly on the mode and affinity of Ca2+ binding and resolution of the resultant conformational changes, were soon complemented by research on its expression, localization and identification of binding partners. With time, the use of biophysical methods helped to resolve the structure and versatility of S100A6 complexes with some of its ligands. Meanwhile, it became clear that S100A6 expression was altered in various pathological states and correlated with the stage/progression of many diseases, including cancers, indicative of its important, and possibly causative, role in some of these diseases. This, in turn, prompted researchers to look for the mechanism of S100A6 action and to identify the intermediary signaling pathways and effectors. After all these years, our knowledge on various aspects of S100A6 biology is robust but still incomplete. The list of S100A6 ligands is growing all the time, as is our understanding of the physiological importance of these interactions. The present review summarizes available data concerning S100A6 expression/localization, interaction with intracellular and extracellular targets, involvement in Ca2+-dependent cellular processes and association with various pathologies.
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Sun Y, Miao X, Zhu L, Liu J, Lin Y, Xiang G, Wu X, Wang X, Ni Z, Li S. Autocrine TGF-alpha is associated with Benzo(a)pyrene-induced mucus production and MUC5AC expression during allergic asthma. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 241:113833. [PMID: 36068759 DOI: 10.1016/j.ecoenv.2022.113833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
OBJECTS Benzo(a)pyrene (BaP), an environmental pollutant, is present in high concentrations in urban smog and cigarette smoke and has been reported to promote high mucin 5AC (MUC5AC) expression. Epithelium-derived inflammatory cytokines are considered an important modulator of mucus oversecretion and MUC5AC overexpression. Here, we investigated whether the effect of BaP on MUC5AC overexpression was associated with cytokine autocrine activity in vivo and in vitro. METHODS In vivo, BALB/c mice were treated with ovalbumin (OVA) in the presence or absence of BaP. Allergy-induced mucus production was assessed by Alcian Blue Periodic acid Schiff (AB-PAS) staining. The human airway epithelial cell line NCI-H292 was used in vitro. MUC5AC and transforming growth factor (TGF)-α mRNA levels were assessed with real-time quantitative PCR. The concentration of cytokines was measured by ELISA. The MUC5AC, p-ERK, ERK, p-EGFR and EGFR proteins were detected by Western blotting in cells or by immunohistochemistry in mouse lungs. Small-interfering RNAs were used for gene silencing. RESULTS TGF-α was overproduced in the supernatant of NCI-H292 cells treated with BaP. Knockdown of TGF-α expression inhibited the BaP-induced increase in MUC5AC expression and subsequent activation of the EGFR-ERK signalling pathway. Knocking down aryl hydrocarbon receptor (AhR) expression or treatment with an ROS inhibitor (N-acetyl-L-cysteine) could relieve the TGF-α secretion induced by BaP in epithelial cells. In an animal study, coexposure to BaP with OVA increased mucus production, MUC5AC expression and ROS-EGFR-ERK activation in the lung as well as TGF-α levels in bronchoalveolar lavage fluid (BALF). Furthermore, the concentration of TGF-α in BALF was correlated with MUC5AC mRNA levels. Additionally, TGF-α expression was found to be positively correlated with MUC5AC expression in the airway epithelial cells of smokers. Compared with non-smoker asthma patients, TGF-α serum levels were also elevated in smoker asthma patients. CONCLUSION Autocrine TGF-α was associated with BaP-induced MUC5AC expression in vitro and in vivo. BaP induced TGF-α secretion by activating AhR and producing ROS, which led to activation of the EGFR-ERK pathway.
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Affiliation(s)
- Yipeng Sun
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiayi Miao
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Linyun Zhu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Jinjin Liu
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Yuhua Lin
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China
| | - Guiling Xiang
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiaodan Wu
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Xiaobiao Wang
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China.
| | - Zhenhua Ni
- Department of Respiratory Medicine, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China; Central lab, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, PR China.
| | - Shanqun Li
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China.
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Pneumoproteins in Offshore Drill Floor Workers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16030300. [PMID: 30678045 PMCID: PMC6388385 DOI: 10.3390/ijerph16030300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/14/2019] [Accepted: 01/21/2019] [Indexed: 11/25/2022]
Abstract
The aim was to assess pneumoproteins and a certain biomarker of systemic inflammation in drill floor workers exposed to airborne contaminants generated during drilling offshore, taking into consideration serum biomarkers of smoking, such as nicotine (S-Nico) and cotinine. Blood samples of club cell protein 16 (CC-16), surfactant protein D (SP-D) and C-reactive protein (CRP) were collected before and after a 14-day work period from 65 drill floor workers and 65 referents. Air samples of oil mist, drilling mud components and elemental carbon were collected in person. The drill floor workers were exposed to a median air concentration of 0.18 mg/m3 of oil mist and 0.14 mg/m3 of airborne mud particles. There were no differences in the concentrations of CC-16 and SP-D across the 14-day work period and no difference between drill floor workers and referents at baseline after adjusting for differences in sampling time and smoking. CRP decreased across the work period. There was a strong association between the CC-16 concentrations and the time of sampling. Current smokers with S-Nico > detection limit (DL) had a statistically significantly lower CC-16 concentration, while smokers with S-Nico < DL had CC-16 concentrations similar to that of the non-smokers. Fourteen days of work offshore had no effect on serum pneumoprotein and CRP concentrations. However, the time of blood sampling was observed to have a strong effect on the measured concentrations of CC-16. The effect of current smoking on the CC-16 concentrations appears to be dependent on the S-Nico concentrations.
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Sorensen GL. Surfactant Protein D in Respiratory and Non-Respiratory Diseases. Front Med (Lausanne) 2018; 5:18. [PMID: 29473039 PMCID: PMC5809447 DOI: 10.3389/fmed.2018.00018] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/19/2018] [Indexed: 12/16/2022] Open
Abstract
Surfactant protein D (SP-D) is a multimeric collectin that is involved in innate immune defense and expressed in pulmonary, as well as non-pulmonary, epithelia. SP-D exerts antimicrobial effects and dampens inflammation through direct microbial interactions and modulation of host cell responses via a series of cellular receptors. However, low protein concentrations, genetic variation, biochemical modification, and proteolytic breakdown can induce decomposition of multimeric SP-D into low-molecular weight forms, which may induce pro-inflammatory SP-D signaling. Multimeric SP-D can decompose into trimeric SP-D, and this process, and total SP-D levels, are partly determined by variation within the SP-D gene, SFTPD. SP-D has been implicated in the development of respiratory diseases including respiratory distress syndrome, bronchopulmonary dysplasia, allergic asthma, and chronic obstructive pulmonary disease. Disease-induced breakdown or modifications of SP-D facilitate its systemic leakage from the lung, and circulatory SP-D is a promising biomarker for lung injury. Moreover, studies in preclinical animal models have demonstrated that local pulmonary treatment with recombinant SP-D is beneficial in these diseases. In recent years, SP-D has been shown to exert antimicrobial and anti-inflammatory effects in various non-pulmonary organs and to have effects on lipid metabolism and pro-inflammatory effects in vessel walls, which enhance the risk of atherosclerosis. A common SFTPD polymorphism is associated with atherosclerosis and diabetes, and SP-D has been associated with metabolic disorders because of its effects in the endothelium and adipocytes and its obesity-dampening properties. This review summarizes and discusses the reported genetic associations of SP-D with disease and the clinical utility of circulating SP-D for respiratory disease prognosis. Moreover, basic research on the mechanistic links between SP-D and respiratory, cardiovascular, and metabolic diseases is summarized. Perspectives on the development of SP-D therapy are addressed.
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Affiliation(s)
- Grith L Sorensen
- Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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8
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Leśniak W, Wilanowski T, Filipek A. S100A6 - focus on recent developments. Biol Chem 2017; 398:1087-1094. [PMID: 28343163 DOI: 10.1515/hsz-2017-0125] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 03/21/2017] [Indexed: 01/08/2023]
Abstract
The Ca2+-binding protein, S100A6, belongs to the S100 family. Binding of Ca2+ induces a conformational change, which causes an increase in the overall S100A6 hydrophobicity and allows it to interact with many targets. S100A6 is expressed in different normal tissues and in many tumors. Up to now it has been shown that S100A6 is involved in cell proliferation, cytoskeletal dynamics and tumorigenesis, and that it might have some extracellular functions. In this review, we summarize novel discoveries concerning S100A6 targets, its involvement in cellular signaling pathways, and presence in stem/progenitor cells, extracellular matrix and body fluids of diseased patients.
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9
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Juang YM, Chien HJ, Yang CY, Yeh HC, Cheng TJ, Lai CC. Comparative Proteomic Analysis of Rat Bronchoalveolar Lavage Fluid after Exposure to Zinc Oxide Nanoparticles. Mass Spectrom (Tokyo) 2017; 6:S0066. [PMID: 28573081 DOI: 10.5702/massspectrometry.s0066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/19/2017] [Indexed: 11/23/2022] Open
Abstract
Zinc oxide nanoparticles (ZnO NPs) are one of the most widely used nanomaterials in consumer products and industrial applications. As a result of all these uses, this has raised concerns regarding their potential toxicity. We previously found that candidate markers of idiopathic pulmonary fibrosis and lung cancer were significantly up-regulated in rat bronchoalveolar lavage fluid (BALF) following exposure to ZnO NPs by using a liquid chromatography (LC)-based proteomic approach. To achieve comprehensive protein identification analysis, we conducted the two-dimensional gel electrophosis (2-DE)-based proteomic workflow to analyze the differences in BALF proteins from rats that had been exposed to a high dose of 35 nm ZnO NPs. A total of 31 differentially expressed protein spots were excised from the gels and analyzed by nanoLC-tandem mass spectrometry (MS/MS). Gene ontology (GO) annotation of these proteins showed that most of the differentially expressed proteins were involved in response to stimulus and inflammatory response processes. Moreover, pulmonary surfactant-associated protein D and gelsolin, biomarkers of idiopathic pulmonary fibrosis, were significantly up-regulated in rat BALF after ZnO NPs exposure (2.42- and 2.84-fold, respectively). The results obtained from this present study could provide a complementary consequence with our previous study and contribute to a better understanding of the molecular mechanisms involved in ZnO NP-induced lung disorders.
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Affiliation(s)
- Yu-Min Juang
- Institute of Molecular Biology, National Chung Hsing University
| | - Han-Ju Chien
- Institute of Molecular Biology, National Chung Hsing University
| | - Cheng-Yu Yang
- Institute of Molecular Biology, National Chung Hsing University
| | - Hsiao-Chien Yeh
- Institute of Molecular Biology, National Chung Hsing University
| | - Tsun-Jen Cheng
- Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University
| | - Chien-Chen Lai
- Institute of Molecular Biology, National Chung Hsing University.,Graduate Institute of Chinese Medical Science, China Medical University.,Rong Hsing Research Center for Translational Medicine, National Chung Hsing University
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Qamar W. Technical considerations and precautions inin situbronchoalveolar lavage and alveolar infiltrating cells isolation in rats. Toxicol Mech Methods 2015; 25:547-51. [DOI: 10.3109/15376516.2015.1056396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Lecht S, Gerstenhaber JA, Stabler CT, Pimton P, Karamil S, Marcinkiewicz C, Schulman ES, Lelkes PI. Heterogeneous Mixed-Lineage Differentiation of Mouse Embryonic Stem Cells Induced by Conditioned Media from A549 Cells. Stem Cells Dev 2014; 23:1923-36. [DOI: 10.1089/scd.2014.0042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Shimon Lecht
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Jonathan A. Gerstenhaber
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Collin T. Stabler
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Pimchanok Pimton
- Department of Biology, School of Science, Walailak University, Thammarat, Thailand
| | - Seda Karamil
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Cezary Marcinkiewicz
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
| | - Edward S. Schulman
- Division of Pulmonary, Critical Care and Sleep Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Peter I. Lelkes
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania
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Juang YM, Lai BH, Chien HJ, Ho M, Cheng TJ, Lai CC. Changes in protein expression in rat bronchoalveolar lavage fluid after exposure to zinc oxide nanoparticles: an iTRAQ proteomic approach. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:974-980. [PMID: 24623703 DOI: 10.1002/rcm.6866] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 02/02/2014] [Accepted: 02/03/2014] [Indexed: 06/03/2023]
Abstract
RATIONALE Zinc oxide nanoparticles (ZnO NPs) are widely used in consumer products and various biomedical fields. As a result, humans are frequently exposed to these NPs. However, there is a lack of information about the proteins that are expressed in the airway in response to exposure to ZnO NPs. METHODS Bronchoalveolar lavage fluid (BALF) from Sprague-Dawley (SD) rats that had been exposed to high-dose 35 nm ZnO NPs (N = 6) and filtered air (N = 4) was collected and then labeled with isobaric tags for relative and absolute quantitation (iTRAQ). The differentially expressed proteins were identified by two-dimensional liquid chromatography/tandem mass spectrometry (2D-LC/MS/MS) and further classified by Gene Ontology (GO) annotation. RESULTS A total of 46 proteins displayed significant changes after exposure. GO annotation of these differentially expressed proteins indicated that exposure to ZnO NPs mainly affected immune and inflammatory processes. Furthermore, S100A8 and S100A9, candidate markers of idiopathic pulmonary fibrosis and lung cancer, were significantly up-regulated (2.78- and 2.87-fold, respectively) following exposure. CONCLUSIONS Our data are consistent with recent study results that exposure to ZnO NPs induces lung inflammation. These data contribute to a better understanding of how exposure to ZnO NPs leads to lung damage through the functional classification of these proteins.
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Affiliation(s)
- Yu-Min Juang
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
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Mahajan L, Gautam P, Dodagatta-Marri E, Madan T, Kishore U. Surfactant protein SP-D modulates activity of immune cells: proteomic profiling of its interaction with eosinophilic cells. Expert Rev Proteomics 2014; 11:355-69. [PMID: 24697551 DOI: 10.1586/14789450.2014.897612] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Surfactant protein D (SP-D), a C-type lectin, is known to protect against lung infection, allergy and inflammation. Its recombinant truncated form comprising homotrimeric neck and CRD region (rhSP-D) has been shown to bring down specific IgE levels, eosinophilia and restore Th2-Th1 homeostasis in murine models of lung hypersensitivity. SP-D knockout mice show intrinsic hypereosinophilia and airway hyper-responsiveness that can be alleviated by rhSP-D. The rhSP-D can bind activated eosinophils, inhibit chemotaxis and degranulation, and selectively induce oxidative burst and apoptosis in sensitized eosinophils. A global proteomics study of rhSP-D-treated eosinophilic cell line AML14.3D10 identified large-scale molecular changes associated with oxidative burst, cell stress and survival-related proteins potentially responsible for apoptosis induction. The data also suggested an involvement of RNA binding- and RNA splicing-related proteins. Thus, the proteomics approach yielded a catalog of differentially expressed proteins that may be protein signatures defining mechanisms of SP-D-mediated maintenance of homeostasis during allergy.
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Affiliation(s)
- Lakshna Mahajan
- CSIR Institute of Genomics and Integrative Biology, Mall road, Delhi 110007, India
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Gianazza E, Wait R, Eberini I, Sensi C, Sironi L, Miller I. Proteomics of rat biological fluids — The tenth anniversary update. J Proteomics 2012; 75:3113-28. [DOI: 10.1016/j.jprot.2012.03.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 01/29/2023]
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15
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Krockenberger MB, Malik R, Ngamskulrungroj P, Trilles L, Escandon P, Dowd S, Allen C, Himmelreich U, Canfield PJ, Sorrell TC, Meyer W. Pathogenesis of pulmonary Cryptococcus gattii infection: a rat model. Mycopathologia 2010; 170:315-30. [PMID: 20552280 DOI: 10.1007/s11046-010-9328-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Accepted: 05/25/2010] [Indexed: 01/31/2023]
Abstract
A model of pulmonary cryptococcosis in immunocompetent rats was developed to better understand the virulence of Cryptococcus gattii. Six isolates were studied, representing four molecular genotypes (VGI-MATα, VGIIa-MATα, VGIIa-MAT a, VGIIb-MATα), obtained from Australia, Vancouver (Canada) and Colombia. These originated from human patients, a cat and the environment and were administered intratracheally (i.t.) or transthoracically into Fischer 344 or Wistar-Furth rats in doses varying from 10(4) to 10(7) colony-forming units (CFU) in 0.1 ml of saline. With the exception of animals given the VGIIa-MAT a isolate, rats consistently became ill or died of progressive cryptococcal pneumonia following i.t. doses exceeding 10(7) CFU. Affected lungs increased in weight up to tenfold and contained numerous circumscribed, gelatinous lesions. These became larger and more extensive, progressing from limited hilar and/or tracheal lesions, to virtually confluent gelatinous masses. Disease was localized to the lungs for at least 3-4 weeks, with dissemination to the brain occurring in some animals after day 29. The dose-response relationship was steep for two VGI isolates studied (human WM179, environmental WM276); doses up to 10(6) CFU i.t. did not produce lesions, while 10(7) or more yeast cells produced progressive pneumonia. Intratracheal inoculation of rats with C. gattii provides an excellent model of human pulmonary cryptococcosis in healthy hosts, mimicking natural infections. Disease produced by C. gattii in rats is distinct from that caused by C. neoformans in that infections are progressive and ultimately fatal.
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Affiliation(s)
- Mark B Krockenberger
- Faculty of Veterinary Science, Building B14, University of Sydney, Sydney, NSW, 2006, Australia
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Chiu KH, Lee WLW, Chang CC, Chen SC, Chang YC, Ho MN, Hsu JF, Liao PC. A label-free differential proteomic analysis of mouse bronchoalveolar lavage fluid exposed to ultrafine carbon black. Anal Chim Acta 2010; 673:160-6. [PMID: 20599030 DOI: 10.1016/j.aca.2010.05.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 05/23/2010] [Accepted: 05/30/2010] [Indexed: 10/19/2022]
Abstract
Ultrafine carbon black (ufCB) is a potential hazard to the lung. It causes changes in protein expression and it increases alveolar-capillary permeability in the lung. Label-free quantitative proteomic methods allow a sensitive and accurate analytical method for identifying and quantifying proteins in a protein mixture without chemically modifying the proteins. We used a label-free quantitative proteomic approach that combined and aligned LC-MS and LC-MS/MS spectra to analyze mouse bronchoalveolar lavage fluid (BALF) protein changes associated with exposure to ufCB. We developed a simple normalization method for quantification without spiking the internal standard. The intensities of unchanged peptides were used as normalization factors based on a statistical method to avoid the influence of peptides changed because of ufCB. LC-MS/MS spectra and then database searching were used to identify proteins. The relative abundances of the aligned peptides of identified proteins were determined using LC-MS spectra. We identified 132 proteins, of which 77 are reported for the first time. In addition, the expression of 15 inflammatory proteins and surfactant-associated proteins was regulated (i.e., 7 upregulated and 8 downregulated) compared with the controls. Several proteins not previously reported provide complementary information on the proteins present in mouse BALF, and they are potential biomarkers for the understanding of mechanisms involved in ufCB-induced lung disorders hypothesize that using the label-free quantitative proteomic approach introduced here is well suited for more rigorous, large-scale quantitative analysis of biological samples. We hypothesize that this label-free quantitative proteomic approach will be suited for a large-scale quantitative analysis of biological samples.
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Affiliation(s)
- Kuo-Hsun Chiu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Lin YL, Huang KT. Hemoglobin conjugated with a Band 3 N-terminus derived peptide as an oxygen carrier. ARTIFICIAL CELLS, BLOOD SUBSTITUTES, AND IMMOBILIZATION BIOTECHNOLOGY 2009; 37:32-40. [PMID: 19132639 DOI: 10.1080/10731190802664684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A peptide composed of 9 amino acids, 7 residues from N-terminus of human erythrocytic Band 3 protein (AcMEELQDD) followed by cysteine and glutamic acids, was conjugated to hemoglobin (Hb) serving as an allosteric effector for oxygen release. The activated polyethylene glycol (PEG), maleimide-PEG-N-hydroxysuccinimidyl, was used to crosslink Hb with the peptide. The putative conjugation site on Hb for effective enhancement of oxygen release was characterized as Lys-beta95 by liquid chromatography-tandem mass spectrometry. In addition, the conjugated peptide causes a rightward shift of the oxygen dissociation curve as compared to that of its parent Hb when the degree of oxygen saturation is higher than 50%. Furthermore, this conjugated peptide remains effective on lowering Hb's oxygen affinity after Hb polymerization by another PEG crosslinker. The allosteric properties of the peptide-conjugated Hb may provide a new aspect of Hb-based oxygen carriers.
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Affiliation(s)
- Yen-Lin Lin
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
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Lu YT, Han CL, Wu CL, Yu TM, Chien CW, Liu CL, Chen YJ. Proteomic profiles of bronchoalveolar lavage fluid from patients with ventilator-associated pneumonia by gel-assisted digestion and 2-D-LC/MS/MS. Proteomics Clin Appl 2008; 2:1208-22. [DOI: 10.1002/prca.200800069] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Indexed: 11/06/2022]
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Hirsch J, Ware LB, Matthay MA. Pulmonary Proteomics. Clin Proteomics 2008. [DOI: 10.1002/9783527622153.ch21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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