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Roeder F, Knudsen L, Schmiedl A. The expression of the surfactant proteins SP-A and SP-B during postnatal alveolarization of the rat lung. PLoS One 2024; 19:e0297889. [PMID: 38483982 PMCID: PMC10939297 DOI: 10.1371/journal.pone.0297889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/03/2024] [Indexed: 03/17/2024] Open
Abstract
OBJECTIVE Surfactant-specific proteins (SP) are responsible for the functional and structural integrity as well as for the stabilization of the intra-alveolar surfactant. Morphological lung maturation starts in rat lungs after birth. The aim of this study was to investigate whether the expression of the hydrophilic SP-A and the hydrophobic SP-B is associated with characteristic postnatal changes characterizing morphological lung maturation. METHODS Stereological methods were performed on the light microscope. Using immunohistochemical and molecular biological methods (Western Blot, RT-qPCR), the SP-A and SP-B of adult rat lungs and of those with different postnatal developmental stages (3, 7, 14 and 21 days after birth) were characterized. RESULTS As signs of alveolarization the total septal surface and volume increased and the septal thickness decreased. The significantly highest relative surface fraction of SP-A labeled alveolar epithelial cells type II (AEII) was found together with the highest relative SP-A gene expression before the alveolarization (3th postnatal day). With the downregulation of SP-A gene expression during and after alveolarization (between postnatal days 7 and 14), the surface fraction of the SP-A labeled AEII also decreased, so they are lowest in adult animals. The surface fraction of SP-B labeled AEII and the SP-B gene expression showed the significantly highest levels in adults, the protein expression increased also significantly at the end of morphological lung maturation. There were no alterations in the SP-B expression before and during alveolarization until postnatal day 14. The protein expression as well as the gene expression of SP-A and SP-B correlated very well with the total surface of alveolar septa independent of the postnatal age. CONCLUSION The expression of SP-A and SP-B is differentially associated with morphological lung maturation and correlates with increased septation of alveoli as indirect clue for alveolarization.
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Affiliation(s)
- Franziska Roeder
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
| | - Lars Knudsen
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Andreas Schmiedl
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
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Dong S, Pang H, Li F, Hua M, Liang M, Song C. Immunoregulatory function of SP-A. Mol Immunol 2024; 166:58-64. [PMID: 38244369 DOI: 10.1016/j.molimm.2024.01.005] [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: 10/24/2023] [Revised: 12/28/2023] [Accepted: 01/08/2024] [Indexed: 01/22/2024]
Abstract
Surfactant protein A (SP-A), a natural immune molecule, plays an important role in lung health. SP-A recognizes and binds microbial surface glycogroups through the C-type carbohydrate recognition domain, and then binds corresponding cell surface receptors (such as C1qRp, CRT-CD91 complex, CD14, SP-R210, Toll-like receptor, SIRP-α, CR3, etc.) through collagen-like region, and subsequently mediates biological effects. SP-A regulates lung innate immunity by promoting surfactant absorption by alveolar type II epithelial cells and phagocytosis of pathogenic microorganisms by alveolar macrophages. SP-A also regulates lung adaptive immunity by inhibiting DC maturation, and T cell proliferation and differentiation. This article reviews latest relationships between SP-A and adaptive and intrinsic immunity.
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Affiliation(s)
- Shu Dong
- Department of Immunology, School of Laboratory Medicine, Bengbu Medical University, Anhui 233030, China; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Anhui 233030, China
| | - Hongyuan Pang
- Department of Immunology, School of Laboratory Medicine, Bengbu Medical University, Anhui 233030, China; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Anhui 233030, China
| | - Fan Li
- Department of Immunology, School of Laboratory Medicine, Bengbu Medical University, Anhui 233030, China; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Anhui 233030, China
| | - Mengqing Hua
- Department of Immunology, School of Laboratory Medicine, Bengbu Medical University, Anhui 233030, China; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Anhui 233030, China
| | - Meng Liang
- Department of Biotechnology, School of Life Science, Bengbu Medical University, Anhui 233030, China.
| | - Chuanwang Song
- Department of Immunology, School of Laboratory Medicine, Bengbu Medical University, Anhui 233030, China; Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Anhui 233030, China.
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Singh G, Martin Rumende C, Sharma SK, Rengganis I, Amin Z, Loho T, Hermiyanti E, Harimurti K, Wibowo H. Low BALF CD4 T cells count is associated with extubation failure and mortality in critically ill covid-19 pneumonia. Ann Med 2022; 54:1894-1905. [PMID: 35786088 PMCID: PMC9258432 DOI: 10.1080/07853890.2022.2095012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Critically ill COVID-19 pneumonia is one of the main causes of extubation failure and mortality. Understanding clinical characteristics, laboratory profiles and bronchoalveolar lavage fluid (BALF) immunopathology may help improve outcomes in critically ill COVID-19 pneumonia. We aimed to describe clinical characteristics, laboratory profiles and BALF immunopathology based on lung severity in critically ill COVID-19 pneumonia patients. MATERIALS AND METHODS Forty critically ill severe pneumonia patients requiring invasive mechanical ventilation in Cipto Mangunkusumo General (National Tertiary Referral Hospital), Indonesia within November 2020-January 2021 were enrolled in this study. Early BALF collection was performed after patients' intubation. Clinical characteristics, laboratory profiles and BALF biomarkers (sTREM-1, alveolar macrophage amount and function, IL-6, IL-17, CD4 T-cells, Tregs, SP-A and Caspase-3) were observed and analysed. Outcomes were measured based on extubation failure (within 19 days) and 28-days mortality. Univariate and bivariate analyses were performed. RESULTS Early bronchoscopy was performed in an average of 4 h (SD = 0.82) after patients' intubation. Twenty-three and twenty-two patients had extubation failure (within 19 days) and 28-days mortality, respectively. In the baseline clinical characteristics of critically ill COVID-19 patients, we found no significant differences in the extubation and mortality status groups. In the laboratory profiles of critically ill COVID-19 patients, we found no significant differences in the extubation status groups. In critically ill COVID-19 pneumonia patients, there was a significant high D-dimer levels in survived group (p = .027), a significant low BALF CD4 T-cells count in the right lung (p = .001) and a significant low BALF CD4 T-cells count (p = .010 and p = .018) in severely affected lung with extubation failure and mortality. CONCLUSIONS BALF CD4 T-cells count evaluation of severely affected lung is associated with early extubation failure and mortality in critically ill COVID-19 pneumonia patients. KEY MESSAGEFew studies have been conducted during the peak COVID-19 period analysing combined bronchoalveolar lavage fluid (BALF) immunopathology biomarkers within four hours of intubation to assess extubation failure and mortality. In this study, we reported eight BALF immunopathology biomarkers (sTREM-1, alveolar macrophage, IL-6, IL-17, CD4 T-cells, Tregs, SP-A and Caspase-3).We found significantly low BALF CD4 T-cells count in the right lung, and low BALF CD4 T-cells count in severely affected lung of critically ill COVID-19 pneumonia patients in extubation failure and mortality.
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Affiliation(s)
- Gurmeet Singh
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Cleopas Martin Rumende
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Surendra K Sharma
- Department of Molecular Medicine, Jamia Hamdard Institute of Molecular Medicine, Hamdard University, New Delhi, India.,Department of General Medicine & Pulmonary Medicine, JNMC, Datta Meghe Institute of Medical Science, New Delhi, India
| | - Iris Rengganis
- Department of Internal Medicine, Faculty of Medicine, Division of Allergy and Clinical Immunology, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Zulkifli Amin
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Tonny Loho
- Department of Clinical Pathology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Emmy Hermiyanti
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Padjadjaran, Dr Hasan Sadikin Hospital Bandung, Bandung, Indonesia
| | - Kuntjoro Harimurti
- Department of Internal Medicine, Faculty of Medicine, Division of Geriatrics, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Heri Wibowo
- Head of Integrated Laboratory, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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Yalaz M, Tanriverdi S, Uygur Ö, Altun Köroğlu Ö, Azarsiz E, Aksu G, Kültürsay N. Early Immunomodulatory Effects of Different Natural Surfactant Preparations in Preterms With Respiratory Distress. Front Pediatr 2022; 10:845780. [PMID: 35372166 PMCID: PMC8971705 DOI: 10.3389/fped.2022.845780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Respiratory distress syndrome (RDS) is the most common respiratory disease in premature infants. Exogenous natural surfactant preparations are used in the treatment of RDS. In recent years, it has become increasingly evident that surfactant plays an immunoregulatory role. OBJECTIVES The aim of this study was to evaluate cytokine and chemokine response following three different regimens of natural surfactant treatment in preterm newborns with RDS. METHODS Premature newborns below 32 weeks of gestation who were intubated for RDS and given early surfactant rescue therapy were included in the study. Newborns were randomly divided into three groups and Beractant 100 mg/kg (B-100), Poractant alfa 100 mg/kg (Pα-100) and Poractant alfa 200 mg/kg (Pα-200) were administered intratracheally. Blood samples and transtracheal aspirates (TA) were collected just before and 4-6 h after the surfactant treatment. Total eosinophil count, inducible T Cell alpha chemoattractant (ITaC), macrophage inflammatory protein 3 beta (MIP3b), interleukins (IL) 5, 8, 9, 10, 13, immunoglobulin E (IgE), interferon gamma (IFN-γ), eotaxin and tumor necrosis factor beta-1 (TGF-β1) were measured from blood and tracheal aspirate samples. RESULTS A total of 45 infants, 15 in each group, were included in the study. Mean gestational age, birth weight, antenatal, demographic and clinical characteristics of the study groups were similar. IFNγ concentration and eosinophil counts in TA decreased after surfactant replacement in all groups, especially in the infants treated with Pα-100 and Pα-200. Eotaxin, TGF beta and IL-8 concentrations in TA increased significantly in the infants treated with Pα-100 and Pα-200. IL-9 levels in TA decreased in the B-100 group but increased in the Pα-100 and Pα-200 groups. Blood levels of cytokines and chemokines showed significantly decreased levels of ITaC and MIP3b only in the B-100 group, but no significant change was observed in the Pα-100 and Pα-200 groups. CONCLUSION In our study, the different immunomodulatory effects of natural surfactant preparations on newborn lung is proven. We found that Poractant α, one of the natural surfactant preparations, shifted the lung immune system toward TH2.
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Affiliation(s)
- Mehmet Yalaz
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
| | - Sema Tanriverdi
- Department of Pediatrics, Division of Neonatology, Manisa Celal Bayar University Medical School, Manisa, Turkey
| | - Özgün Uygur
- Department of Pediatrics, Division of Neonatology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey
| | - Özge Altun Köroğlu
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
| | - Elif Azarsiz
- Department of Pediatrics, Division of Pediatric Immunology, Ege University Medical School, Izmir, Turkey
| | - Guzide Aksu
- Department of Pediatrics, Division of Pediatric Immunology, Ege University Medical School, Izmir, Turkey
| | - Nilgün Kültürsay
- Department of Pediatrics, Division of Neonatology, Ege University Medical School, Izmir, Turkey
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Chen X, Yue R, Li X, Ye W, Gu W, Guo X. Surfactant protein A modulates the activities of the JAK/STAT pathway in suppressing Th1 and Th17 polarization in murine OVA-induced allergic asthma. J Transl Med 2021; 101:1176-1185. [PMID: 34108631 DOI: 10.1038/s41374-021-00618-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/19/2021] [Accepted: 05/12/2021] [Indexed: 12/27/2022] Open
Abstract
Asthma is an allergic inflammatory lung disease affecting nearly 300 million people worldwide. To better understand asthma, new regulators must be identified. We conducted a study to investigate the effect and mechanisms of action of surfactant protein A (SPA) in OVA-induced asthmatic mice. Treatment with SPA delayed the onset of asthma, decreased its severity, as well as notably suppressed pro-inflammatory cytokine production. Furthermore, SPA-treated mice possessed more leukocytes; more CD4+ T cells infiltrated the spleen in the SPA-treated mice than in the control mice, and there were decreased percentages of Th1 and Th17 cells in vivo. In addition, expression levels of the T-bet (Th1 transcription factor) and RORγt (Th17 transcription factor) genes were significantly downregulated by SPA treatment. Moreover, SPA reduced the production and mRNA expression of pro-inflammatory cytokine mRNAs in activated T cells in vivo. Mechanistically, SPA could inhibit STAT1/4 and STAT3 phosphorylation, resulting in the differentiation of Th1 and suppression of Th17 cells, respectively. In the presence of CD3/CD28 expression, STAT1/4 and STAT3 were activated but suppressed by SPA, which was responsible for the augmentation of Th1 and Th17 differentiation. This result showed that SPA can effectively modulate the JAK/STAT pathway by suppressing Th1 and Th17 differentiation, thus preventing asthma. The present study reveals the novel immunomodulatory activity of SPA and highlights the importance of further investigating the effects of SPA on asthma.
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Affiliation(s)
- Xi Chen
- Department of Respirology Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Rongcai Yue
- School of Pharmacy, Fujian Medical University, Fuzhou, 350122, Fujian, China
| | - Xiaoming Li
- Department of Respirology Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Wenjing Ye
- Department of Respirology Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Wen Gu
- Department of Respirology Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China.
| | - Xuejun Guo
- Department of Respirology Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200092, China.
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Mishra R, Nawas AF, Mendelson CR. Role of NRF2 in immune modulator expression in developing lung. FASEB J 2021; 35:e21758. [PMID: 34245611 DOI: 10.1096/fj.202100129rr] [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: 01/20/2021] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 11/11/2022]
Abstract
After birth, the alveolar epithelium is exposed to environmental pathogens and high O2 tensions. The alveolar type II cells may protect this epithelium through surfactant production. Surfactant protein, SP-A, an immune modulator, is developmentally upregulated in fetal lung with surfactant phospholipid synthesis. Herein, we observed that the redox-regulated transcription factor, NRF2, and co-regulated C/EBPβ and PPARγ, were markedly induced during cAMP-mediated differentiation of cultured human fetal lung (HFL) epithelial cells. This occurred with enhanced expression of immune modulators, SP-A, TDO2, AhR, and NQO1. Like SP-A, cAMP induction of NRF2 was prevented when cells were exposed to hypoxia. NRF2 knockdown inhibited induction of C/EBPβ, PPARγ, and immune modulators. Binding of endogenous NRF2 to promoters of SP-A and other immune modulator genes increased during HFL cell differentiation. In mouse fetal lung (MFL), a developmental increase in Nrf2, SP-A, Tdo2, Ahr, and Nqo1 and decrease in Keap1 occurred from 14.5 to 18.5 dpc. Developmental induction of Nrf2 in MFL was associated with increased nuclear localization of NF-κB p65, a decline in p38 MAPK phosphorylation, increase in the MAPK phosphatase, DUSP1, induction of the histone acetylase, CBP, and decline in the histone deacetylase, HDAC4. Thus, together with surfactant production, type II cells protect the alveolar epithelium through increased expression of NRF2 and immune modulators to prevent inflammation and oxidative stress. Our findings further suggest that lung cancer cells have usurped this developmental pathway to promote immune tolerance and enhance survival.
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Affiliation(s)
- Ritu Mishra
- Department of Biochemistry, North Texas March of Dimes Birth Defects Center, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Afshan Fathima Nawas
- Department of Biochemistry, North Texas March of Dimes Birth Defects Center, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Carole R Mendelson
- Department of Biochemistry, North Texas March of Dimes Birth Defects Center, The University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Obstetrics & Gynecology, North Texas March of Dimes Birth Defects Center, The University of Texas Southwestern Med Center, Dallas, TX, USA
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7
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Ran R, Cai D, King SD, Que X, Bath JM, Chen SY. Surfactant Protein A, a Novel Regulator for Smooth Muscle Phenotypic Modulation and Vascular Remodeling-Brief Report. Arterioscler Thromb Vasc Biol 2021; 41:808-814. [PMID: 33267655 PMCID: PMC8105259 DOI: 10.1161/atvbaha.120.314622] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE The objective of this study is to determine the role of SPA (surfactant protein A) in vascular smooth muscle cell (SMC) phenotypic modulation and vascular remodeling. Approach and Results: PDGF-BB (Platelet-derived growth factor-BB) and serum induced SPA expression while downregulating SMC marker gene expression in SMCs. SPA deficiency increased the contractile protein expression. Mechanistically, SPA deficiency enhanced the expression of myocardin and TGF (transforming growth factor)-β, the key regulators for contractile SMC phenotype. In vivo, SPA was induced in medial and neointimal SMCs following mechanical injury in both rat and mouse carotid arteries. SPA knockout in mice dramatically attenuated the wire injury-induced intimal hyperplasia while restoring SMC contractile protein expression in medial SMCs. These data indicate that SPA plays an important role in SMC phenotype modulation and vascular remodeling in vivo. CONCLUSIONS SPA is a novel protein factor modulating SMC phenotype. Blocking the abnormal elevation of SPA may be a potential strategy to inhibit the development of proliferative vascular diseases.
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MESH Headings
- Animals
- Becaplermin/pharmacology
- Carotid Arteries/drug effects
- Carotid Arteries/metabolism
- Carotid Arteries/pathology
- Carotid Artery Injuries/genetics
- Carotid Artery Injuries/metabolism
- Carotid Artery Injuries/pathology
- Cells, Cultured
- Disease Models, Animal
- Hyperplasia
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Neointima
- Nuclear Proteins/metabolism
- Phenotype
- Pulmonary Surfactant-Associated Protein A/genetics
- Pulmonary Surfactant-Associated Protein A/metabolism
- Rats, Sprague-Dawley
- Signal Transduction
- Trans-Activators/metabolism
- Transforming Growth Factor beta1/metabolism
- Vascular Remodeling/drug effects
- Mice
- Rats
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Affiliation(s)
- Ran Ran
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA
| | - Dunpeng Cai
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO
| | - Skylar D. King
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
| | - Xingyi Que
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
| | - Jonathan M. Bath
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- The Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO 65212
| | - Shi-You Chen
- Departments of Surgery, University of Missouri School of Medicine, Columbia, MO
- Department of Physiology & Pharmacology, University of Georgia, Athens, GA
- Department of Medical Pharmacology & Physiology, University of Missouri School of Medicine, Columbia, MO
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Casals C, García-Fojeda B, Minutti CM. Soluble defense collagens: Sweeping up immune threats. Mol Immunol 2019; 112:291-304. [DOI: 10.1016/j.molimm.2019.06.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 06/12/2019] [Accepted: 06/13/2019] [Indexed: 12/14/2022]
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9
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Bhatti F, Kung JW, Vieira F. Retinal degeneration mutation in Sftpa1tm1Kor/J and Sftpd -/- targeted mice. PLoS One 2018; 13:e0199824. [PMID: 29969487 PMCID: PMC6029784 DOI: 10.1371/journal.pone.0199824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 06/14/2018] [Indexed: 11/18/2022] Open
Abstract
Surfactant proteins are important collectin immune molecules with a wide distribution throughout the body, including the ocular system. Mice with gene deletions for the surfactant protein genes Sftpa1 and Sftpd were observed to have visual impairment and thinning of the outer nuclear layers of the retina. We hypothesized that gene deletion of Sftpa1 and Sftpd (Sftpa1tm1Kor/J and Sftpd-/-) results in early retinal degeneration in these mice. Sftpa1tm1Kor/J and Sftpd-/- retinas were evaluated by histopathology and optical coherence tomography (OCT). Retinas from Sftpa1tm1Kor/J and Sftpd -/- mice showed early retinal degeneration with loss of the outer nuclear layer. After screening of mice for known retinal degeneration mutations, the mice were found to carry a previously unrecognized Pde6brd1 genotype which resulted from earlier breeding of the strain with Black Swiss mice during their generation. The mutation was outbred and the genotype of Sftpa1tm1Kor/J and Sftpd-/- was confirmed. Outbreeding of the Pde6brd1 mutation resulted in restoration of normal retinal architecture confirmed by in vivo and in vitro examination. We can therefore conclude that loss of Sftpa1 and Sftpd do not result in retinal degeneration. We have now generated retinal Sftpa1 and Sftpd targeted mice that exhibit normal retinal histology.
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Affiliation(s)
- Faizah Bhatti
- Neonatal Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
- Department of Ophthalmology and Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Johannes W. Kung
- Neonatal Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Frederico Vieira
- Neonatal Perinatal Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
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10
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Su L, Shi L, Liu J, Huang L, Huang Y, Nie X. Metabolic profiling of asthma in mice and the interventional effects of SPA using liquid chromatography and Q-TOF mass spectrometry. MOLECULAR BIOSYSTEMS 2018; 13:1172-1181. [PMID: 28463380 DOI: 10.1039/c7mb00025a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Asthma is a chronic inflammatory lung disease that leads to 250 000 deaths annually. There is a need to better understand asthma by identifying new pathogenic molecules. We conducted a liquid-chromatography time-of-flight mass spectrometry (LC-Q-TOF-MS)-based metabolomics study to test for asthma and investigate the interventional mechanisms of surfactant protein A (SPA) in OVA-induced asthma mice. The results revealed that asthma disturbed 32 metabolites in 9 metabolic pathways. After SPA treatment, the metabolomics profile found in asthma was significantly reversed, shifting much closer to that of the control group, indicating that SPA has therapeutic effects against asthma. Metabolomic pathway analysis by the ingenuity pathway analysis demonstrated that several pathways including fatty acid metabolism, lipid metabolism, and purine metabolism were significantly altered in asthma. This study offers new methodologies for the understanding of asthma and the mechanisms of SPA in treating asthma.
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Affiliation(s)
- Li Su
- School of Pharmacy, Second Military Medical University, Shanghai, China
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11
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Guo XH, Bai Z, Qiang B, Bu FH, Zhao N. Roles of monocyte chemotactic protein 1 and nuclear factor-κB in immune response to spinal tuberculosis in a New Zealand white rabbit model. ACTA ACUST UNITED AC 2017; 50:e5625. [PMID: 28225889 PMCID: PMC5333719 DOI: 10.1590/1414-431x20165625] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 10/25/2016] [Indexed: 12/11/2022]
Abstract
This study aimed to explore the roles of monocyte chemotactic protein 1 (MCP-1) and nuclear factor kappa B (NF-κB) in immune response to spinal tuberculosis in a New Zealand white rabbit model. Forty-eight New Zealand white rabbits were collected and divided into four groups: experimental group (n=30, spinal tuberculosis model was established), the sham group (n=15, sham operation was performed) and the blank group (n=3). The qRT-PCR assay and western blotting were applied to detect the mRNA and protein expressions of MCP-1 and NF-κB in peripheral blood. ELISA was used to measure serum levels of MCP-1, NF-κB, IFN-γ, IL-2, IL-4, and IL-10. Flow cytometry was adopted to assess the distributions of CD4+, CD8+ lymphocytes and CD4+ CD25+ Foxp3 lymphocyte subsets. Compared with the sham and blank groups, the mRNA and protein expressions of MCP-1 and NF-κB in the experimental group were significantly increased. The experimental group had lower serum levels of IL-2 and IFN-γ and higher serum level of IL-10 than the sham and blank groups. In comparison to the sham and blank groups, CD4+ T lymphocyte subsets percentage, CD4+/CD8+ ratio and CD4+ CD25+ Foxp3+ Tregs subsets accounting for CD4+ lymphocyte in the experimental group were lower, while percentage of CD8+ T lymphocyte subsets was higher. Our study provided evidence that higher expression of MCP-1 and NF-κB may be associated with decreased immune function of spinal tuberculosis, which can provide a new treatment direction for spinal tuberculosis.
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Affiliation(s)
- X H Guo
- The Third Department of Orthopedics, the Fifth Hospital of Harbin, Harbin, China
| | - Z Bai
- The Third Department of Orthopedics, the Fifth Hospital of Harbin, Harbin, China
| | - B Qiang
- The Third Department of Orthopedics, the Fifth Hospital of Harbin, Harbin, China
| | - F H Bu
- Operating Room, the Fifth Hospital of Harbin, Harbin, China
| | - N Zhao
- The Third Department of Orthopedics, the Fifth Hospital of Harbin, Harbin, China
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Carreto-Binaghi LE, Aliouat EM, Taylor ML. Surfactant proteins, SP-A and SP-D, in respiratory fungal infections: their role in the inflammatory response. Respir Res 2016; 17:66. [PMID: 27250970 PMCID: PMC4888672 DOI: 10.1186/s12931-016-0385-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 05/25/2016] [Indexed: 12/20/2022] Open
Abstract
Pulmonary surfactant is a complex fluid that comprises phospholipids and four proteins (SP-A, SP-B, SP-C, and SP-D) with different biological functions. SP-B, SP-C, and SP-D are essential for the lungs’ surface tension function and for the organization, stability and metabolism of lung parenchyma. SP-A and SP-D, which are also known as pulmonary collectins, have an important function in the host’s lung immune response; they act as opsonins for different pathogens via a C-terminal carbohydrate recognition domain and enhance the attachment to phagocytic cells or show their own microbicidal activity by increasing the cellular membrane permeability. Interactions between the pulmonary collectins and bacteria or viruses have been extensively studied, but this is not the same for fungal pathogens. SP-A and SP-D bind glucan and mannose residues from fungal cell wall, but there is still a lack of information on their binding to other fungal carbohydrate residues. In addition, both their relation with immune cells for the clearance of these pathogens and the role of surfactant proteins’ regulation during respiratory fungal infections remain unknown. Here we highlight the relevant findings associated with SP-A and SP-D in those respiratory mycoses where the fungal infective propagules reach the lungs by the airways.
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Affiliation(s)
- Laura Elena Carreto-Binaghi
- Laboratorio de Inmunología de Hongos, Unidad de Micología, Departamento de Microbiología-Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM); Circuito Interior, Ciudad Universitaria, Av. Universidad 3000, México, D.F., 04510, Mexico
| | - El Moukhtar Aliouat
- Laboratoire Biologie et Diversité des Pathogènes Eucaryotes Emergents, CIIL Institut Pasteur de Lille, Bâtiment Guérin, 1 rue du Professeur Calmette, Lille, France
| | - Maria Lucia Taylor
- Laboratorio de Inmunología de Hongos, Unidad de Micología, Departamento de Microbiología-Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM); Circuito Interior, Ciudad Universitaria, Av. Universidad 3000, México, D.F., 04510, Mexico.
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13
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Pandit H, Thakur G, Koippallil Gopalakrishnan AR, Dodagatta-Marri E, Patil A, Kishore U, Madan T. Surfactant protein D induces immune quiescence and apoptosis of mitogen-activated peripheral blood mononuclear cells. Immunobiology 2016; 221:310-22. [DOI: 10.1016/j.imbio.2015.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/13/2015] [Accepted: 10/23/2015] [Indexed: 01/07/2023]
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14
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Li Y, Zhou H, Zhang Y, Chen C, Huang B, Qu P, Zeng J, Shunmei E, Zhang X, Liu J. N-3-(oxododecanoyl)-L-homoserine lactone promotes the induction of regulatory T-cells by preventing human dendritic cell maturation. Exp Biol Med (Maywood) 2015; 240:896-903. [PMID: 25749498 DOI: 10.1177/1535370214564742] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 10/30/2014] [Indexed: 02/01/2023] Open
Abstract
N-3-(Oxododecanoyl)-L-homoserine lactone (C12) is a small bacterial signaling molecule secreted by Pseudomonas aeruginosa (PA), which activates mammalian cells through TLR4-independent mechanisms. C12 acts as an immunosuppressant and it has been shown to modulate murine bone marrow-derived dendritic cell-mediated T-helper 2 (Th2) cell polarizations in vitro. In the present study, we initially examined the impact of C12 on the maturation of human monocyte-derived dendritic cells (Mo-DCs) and the induction of regulatory T-cells (iTregs) in culture. Our findings demonstrate that C12-treated Mo-DCs failed to undergo lipopolysaccharide (LPS)-induced maturation. At the molecular level, C12 blocked the upregulation of surface molecules, including CD11c, HLA-DR, CD40, and CD80, and it switched to an interleukin (IL)-10(high), IL-12p70(low) phenotype. Moreover, C12 selectively inhibited the capacity of Mo-DCs to stimulate the proliferation of allogeneic CD4(+) T-cells. Otherwise, the C12-treated Mo-DCs promoted the generation of CD4(+)CD25(+)Foxp3(+)-induced regulatory T-cells (iTregs) and enhanced their IL-10 and transforming growth factor (TGF)-β production associated with reduced interferon (IFN)-γ and IL-12p70 production. These findings provide new insights towards understanding the persistence of chronic inflammation in PA infection.
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Affiliation(s)
- Youqiang Li
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Huayou Zhou
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Yunyan Zhang
- Department of Stomatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, P.R. China
| | - Cha Chen
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Bin Huang
- Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, P.R. China
| | - Pinghua Qu
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Jianming Zeng
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - E Shunmei
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Xuan Zhang
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Jianping Liu
- Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510006, P.R. China
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15
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Kay S, Metkari SM, Madan T. Ovarian Hormones Regulate SP-D Expression in the Mouse Uterus During Estrous Cycle and Early Pregnancy. Am J Reprod Immunol 2015; 74:77-88. [DOI: 10.1111/aji.12369] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/21/2015] [Indexed: 12/01/2022] Open
Affiliation(s)
- Sharon Kay
- Department of Innate Immunity; National Institute for Research in Reproductive Health (ICMR); Parel Mumbai India
| | - Siddhanath Maruti Metkari
- Experimental Animal Facility; National Institute for Research in Reproductive Health (ICMR); Parel Mumbai India
| | - Taruna Madan
- Department of Innate Immunity; National Institute for Research in Reproductive Health (ICMR); Parel Mumbai India
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16
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Ledford JG, Addison KJ, Foster MW, Que LG. Eosinophil-associated lung diseases. A cry for surfactant proteins A and D help? Am J Respir Cell Mol Biol 2015; 51:604-14. [PMID: 24960334 DOI: 10.1165/rcmb.2014-0095tr] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Surfactant proteins (SP)-A and SP-D (SP-A/-D) play important roles in numerous eosinophil-dominated diseases, including asthma, allergic bronchopulmonary aspergillosis, and allergic rhinitis. In these settings, SP-A/-D have been shown to modulate eosinophil chemotaxis, inhibit eosinophil mediator release, and mediate macrophage clearance of apoptotic eosinophils. Dysregulation of SP-A/-D function in eosinophil-dominated diseases is also not uncommon. Alterations in serum SP-A/-D levels are associated with disease severity in allergic rhinitis and chronic obstructive pulmonary disease. Furthermore, oligimerization of SP-A/-D, necessary for their proper function, can be perturbed by reactive nitrogen species, which are increased in eosinophilic disease. In this review, we highlight the associations of eosinophilic lung diseases with SP-A and SP-D levels and functions.
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Affiliation(s)
- Julie G Ledford
- 1 Department of Medicine, Division of Pulmonary, Allergy and Critical Care, and
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17
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Clarke EV, Weist BM, Walsh CM, Tenner AJ. Complement protein C1q bound to apoptotic cells suppresses human macrophage and dendritic cell-mediated Th17 and Th1 T cell subset proliferation. J Leukoc Biol 2015; 97:147-60. [PMID: 25381385 PMCID: PMC4377823 DOI: 10.1189/jlb.3a0614-278r] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/15/2014] [Accepted: 09/01/2014] [Indexed: 12/17/2022] Open
Abstract
A complete genetic deficiency of the complement protein C1q results in SLE with nearly 100% penetrance in humans, but the molecular mechanisms responsible for this association have not yet been fully determined. C1q opsonizes ACs for enhanced ingestion by phagocytes, such as Mϕ and iDCs, avoiding the extracellular release of inflammatory DAMPs upon loss of the membrane integrity of the dying cell. We previously showed that human monocyte-derived Mϕ and DCs ingesting autologous, C1q-bound LALs (C1q-polarized Mϕ and C1q-polarized DCs), enhance the production of anti-inflammatory cytokines, and reduce proinflammatory cytokines relative to Mϕ or DC ingesting LAL alone. Here, we show that C1q-polarized Mϕ have elevated PD-L1 and PD-L2 and suppressed surface CD40, and C1q-polarized DCs have higher surface PD-L2 and less CD86 relative to Mϕ or DC ingesting LAL alone, respectively. In an MLR, C1q-polarized Mϕ reduced allogeneic and autologous Th17 and Th1 subset proliferation and demonstrated a trend toward increased Treg proliferation relative to Mϕ ingesting LAL alone. Moreover, relative to DC ingesting AC in the absence of C1q, C1q-polarized DCs decreased autologous Th17 and Th1 proliferation. These data demonstrate that a functional consequence of C1q-polarized Mϕ and DC is the regulation of Teff activation, thereby "sculpting" the adaptive immune system to avoid autoimmunity, while clearing dying cells. It is noteworthy that these studies identify novel target pathways for therapeutic intervention in SLE and other autoimmune diseases.
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Affiliation(s)
- Elizabeth V Clarke
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California-Irvine, Irvine, California, USA; and
| | - Brian M Weist
- Department of Molecular & Cell Biology, University of California-Berkeley, Berkeley, California, USA
| | - Craig M Walsh
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California-Irvine, Irvine, California, USA; and
| | - Andrea J Tenner
- Department of Molecular Biology and Biochemistry, Institute for Immunology, University of California-Irvine, Irvine, California, USA; and
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Mock JR, Garibaldi BT, Aggarwal NR, Jenkins J, Limjunyawong N, Singer BD, Chau E, Rabold R, Files DC, Sidhaye V, Mitzner W, Wagner EM, King LS, D’Alessio FR. Foxp3+ regulatory T cells promote lung epithelial proliferation. Mucosal Immunol 2014; 7:1440-51. [PMID: 24850425 PMCID: PMC4205163 DOI: 10.1038/mi.2014.33] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/06/2014] [Indexed: 02/04/2023]
Abstract
Acute respiratory distress syndrome (ARDS) causes significant morbidity and mortality each year. There is a paucity of information regarding the mechanisms necessary for ARDS resolution. Foxp3(+) regulatory T cells (Foxp3(+) T(reg) cells) have been shown to be an important determinant of resolution in an experimental model of lung injury. We demonstrate that intratracheal delivery of endotoxin (lipopolysaccharide) elicits alveolar epithelial damage from which the epithelium undergoes proliferation and repair. Epithelial proliferation coincided with an increase in Foxp3(+) T(reg) cells in the lung during the course of resolution. To dissect the role that Foxp3(+) T(reg) cells exert on epithelial proliferation, we depleted Foxp3(+) T(reg) cells, which led to decreased alveolar epithelial proliferation and delayed lung injury recovery. Furthermore, antibody-mediated blockade of CD103, an integrin, which binds to epithelial expressed E-cadherin decreased Foxp3(+) T(reg) numbers and decreased rates of epithelial proliferation after injury. In a non-inflammatory model of regenerative alveologenesis, left lung pneumonectomy, we found that Foxp3(+) T(reg) cells enhanced epithelial proliferation. Moreover, Foxp3(+) T(reg) cells co-cultured with primary type II alveolar cells (AT2) directly increased AT2 cell proliferation in a CD103-dependent manner. These studies provide evidence of a new and integral role for Foxp3(+) T(reg) cells in repair of the lung epithelium.
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Affiliation(s)
- Jason R. Mock
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Brian T. Garibaldi
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Neil R. Aggarwal
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - John Jenkins
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Nathachit Limjunyawong
- Department of Medicine and Department of Environmental Health Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Benjamin D. Singer
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Eric Chau
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Richard Rabold
- Department of Medicine and Department of Environmental Health Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Daniel C. Files
- Division of Pulmonary, Critical Care, Allergy, and Immunology, Department of Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Venkataramana Sidhaye
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Wayne Mitzner
- Department of Medicine and Department of Environmental Health Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Elizabeth M. Wagner
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Landon S. King
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Franco R. D’Alessio
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Shi G, Han J, Liu G, Hao Y, Ma Y, Li T, Wu X, Zhang H, Liu Y, Wang B, Kong Y, Zhou J, Zeng H. Expansion of activated regulatory T cells by myeloid‐specific chemokines via an alternative pathway in CSF of bacterial meningitis patients. Eur J Immunol 2013; 44:420-30. [DOI: 10.1002/eji.201343572] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 09/18/2013] [Accepted: 10/16/2013] [Indexed: 01/10/2023]
Affiliation(s)
- Guangzhi Shi
- Intensive Care UnitBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Junyan Han
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Gang Liu
- Department of Infectious DiseasesBeijing Children's HospitalCapital Medical UniversityBeijing China
| | - Yu Hao
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Yaluan Ma
- Institute of Basic Medical Theory of Chinese MedicineChina Academy of Chinese Medical SciencesBeijing China
| | - Tong Li
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Xueying Wu
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Henghui Zhang
- Peking University People's HospitalPeking University Hepatology InstituteBeijing Key Laboratory of Hepatitis C and Immunotherapy for Liver DiseasesBeijing China
| | - Yanan Liu
- Laboratory Diagnosis CenterBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Beibei Wang
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Yaxian Kong
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
| | - Jianxin Zhou
- Intensive Care UnitBeijing Tiantan HospitalCapital Medical UniversityBeijing China
| | - Hui Zeng
- Institute of Infectious DiseasesBeijing Ditan HospitalCapital Medical UniversityBeijing China
- Beijing Key Laboratory of Emerging Infectious DiseasesBeijing China
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20
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Firszt R, Francisco D, Church TD, Thomas JM, Ingram JL, Kraft M. Interleukin-13 induces collagen type-1 expression through matrix metalloproteinase-2 and transforming growth factor-β1 in airway fibroblasts in asthma. Eur Respir J 2013; 43:464-73. [PMID: 23682108 DOI: 10.1183/09031936.00068712] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Airway remodelling is a feature of asthma that contributes to loss of lung function. One of the central components of airway remodelling is subepithelial fibrosis. Interleukin (IL)-13 is a key T-helper 2 cytokine and is believed to be the central mediator of allergic asthma including remodelling, but the mechanism driving the latter has not been elucidated in human asthma. We hypothesised that IL-13 stimulates collagen type-1 production by the airway fibroblast in a matrix metalloproteinase (MMP)- and transforming growth factor (TGF)-β1-dependent manner in human asthma as compared to healthy controls. Fibroblasts were cultured from endobronchial biopsies in 14 subjects with mild asthma and 13 normal controls that underwent bronchoscopy. Airway fibroblasts were treated with various mediators including IL-13 and specific MMP-inhibitors. IL-13 significantly stimulated collagen type-1 production in asthma compared to normal controls. Inhibitors of MMP-2 significantly attenuated collagen production in asthma but had no effect in normal controls. IL-13 significantly increased total and active forms of TGF-β1, and this activation was blocked using an MMP-2 inhibitor. IL-13 activated endogenous MMP-2 in asthma patients as compared to normal controls. In an ex vivo model, IL-13 potentiates airway remodelling through a mechanism involving TGF-β1 and MMP-2. These effects provide insights into the mechanism involved in IL-13-directed airway remodelling in asthma.
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Affiliation(s)
- Rafael Firszt
- Division of Allergy, Immunology and Rheumatology, University of Utah, Salt Lake City, UT
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Influence of anticancer agents on cell survival, proliferation, and CD4+CD25+Foxp3+ regulatory T cell-frequency in human peripheral-blood mononuclear cells activated by T cell-mitogen. Int Immunopharmacol 2012. [PMID: 23178575 DOI: 10.1016/j.intimp.2012.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Many anticancer agents currently used are considered to be cytotoxic not only to cancer cells but also to functional immune cells. To learn more about the immunosuppressive adverse influence of chemotherapeutic drugs in cancer chemotherapy, we examined the effects of arsenic trioxide, dacarbazine, 5-fluorouracil, and methotrexate on the survival, proliferation, cytokine production, and CD4(+)CD25(+)Foxp3(+) regulatory T (Treg) cell-frequency in human peripheral blood mononuclear cells (PBMCs) activated by T cell mitogen in vitro. Arsenic trioxide, dacarbazine, and 5-fluorouracil increased trypan-blue stained (dead) cell rates and suppressed the mitogen-activated proliferation of PBMCs significantly at 1-100μM (p<0.05). Methotrexate also significantly increased the percentages of dead cells and suppressed the mitogen-activated PBMC-proliferation at concentrations of more than 0.05μM (p<0.01). Arsenic trioxide significantly inhibited the production of interferon γ, interleukin (IL)-4, -6, and -10 from the activated PBMCs at 5μM (p<0.05). In contrast, the anticancer agents significantly increased Treg cell-frequency in the activated PBMCs at concentrations of more than 0.1μM for methotrexate, 5μM for arsenic trioxide and 5-fluorouracil, and 50μM for dacarbazine, respectively (p<0.05). These agents did not significantly influence the production of transforming growth factor (TGF) β from the activated PBMCs at a concentration range of 0.05-50μM. Our data suggest that the anticancer agents: arsenic trioxide, dacarbazine, 5-fluorouracil, and methotrexate attenuate T cell mediated immunity by not only inhibiting the proliferative response of T cells but by also increasing the frequency of Treg cells, which may result in the suppression of the effector T cell function.
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