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Hodge S, Macowan M, Liu H, Hamon R, Chen ACH, Marchant JM, Pizzutto SJ, Upham JW, Chang AB. Sphingosine signaling dysfunction in airway cells as a potential contributor to progression from protracted bacterial bronchitis to bronchiectasis in children. Pediatr Pulmonol 2020; 55:1414-1423. [PMID: 32176839 DOI: 10.1002/ppul.24728] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/23/2020] [Indexed: 11/11/2022]
Abstract
AIM Protracted bacterial bronchitis (PBB) is considered a potential precursor to bronchiectasis (BE) in some children. We previously showed that alveolar macrophages (AM) from children with PBB or BE have a similar significant defect in phagocytic capacity, with proinflammatory associations. We hypothesized that the mechanisms responsible for this defect involve dysregulation of the sphingosine-1-phosphate (S1P) signaling pathway, as we have found in adult inflammatory lung diseases. METHOD We employed a Custom TaqMan OpenArray to investigate gene expression of S1P-generating enzymes: sphingosine kinases (SPHK) 1/2, S1P phosphatase 2 (SGPP2), S1P lyase 1 (SGPL1), S1P receptors (S1PR) 1/2/4/5; proinflammatory cytokines TNF-α (TNF) and IFNγ (IFNG), the cytotoxic mediator granzyme B (GZMB), and inflammasomes AIM2 and NLRP3, in bronchoalveolar lavage from 15 children with BE, 15 with PBB and 17 age-matched controls, and determined association with clinical/demographic variables and airway inflammation. RESULT Significantly increased expression of S1PR1, S1PR2, and SPHK1 was noted in PBB and BE AM vs controls with increased SGPP2 only in PBB. TNF, IFNG, AIM2, and NLRP3 were significantly increased in both disease groups with increased GZMB only in PBB. There were no significant differences in the expression of any other S1P-related mediator between groups. There were significant positive associations between Haemophilus influenzae growth and expression of S1PR1 and NLRP3; between S1PR1 and S1PR2, NLRP3 and IFNG; between S1PR2 and AIM2, SPHK1, and SPHK2; and between SPHK1 and GZMB, IFNG, AIM2, and NLRP3. CONCLUSION Children with PBB and BE share similar S1P-associated gene expression profiles. AM phagocytic dysfunction and inflammation in these children may occur due to dysregulated S1P signaling.
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Affiliation(s)
- Sandra Hodge
- Lung Research Unit, Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, South Australia, Australia.,Faculty of Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Matthew Macowan
- Lung Research Unit, Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, South Australia, Australia.,Faculty of Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Hong Liu
- Lung Research Unit, Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, South Australia, Australia.,Faculty of Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Rhys Hamon
- Lung Research Unit, Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Alice C-H Chen
- Faculty of Medicine, The University of Queensland Diamantina Institute and Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Julie M Marchant
- Department of Respiratory Medicine, Queensland Children's Hospital and Queensland University of Technology, Brisbane, Queensland, Australia
| | - Susan J Pizzutto
- Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - John W Upham
- Faculty of Medicine, The University of Queensland Diamantina Institute and Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Anne B Chang
- Department of Respiratory Medicine, Queensland Children's Hospital and Queensland University of Technology, Brisbane, Queensland, Australia.,Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
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2
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Burr LD, Rogers GB, Chen ACH, Taylor SL, Bowler SD, Keating RL, Martin ML, Hasnain SZ, McGuckin MA. PPARγ is reduced in the airways of non-CF bronchiectasis subjects and is inversely correlated with the presence of Pseudomonas aeruginosa. PLoS One 2018; 13:e0202296. [PMID: 30114278 PMCID: PMC6095532 DOI: 10.1371/journal.pone.0202296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/31/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Chronic airway inflammation in conditions such as cystic fibrosis (CF) and non-CF bronchiectasis is characterised by a predominant neutrophilic inflammatory response, commonly due to the presence of pathogenic bacteria such as Pseudomonas aeruginosa. We hypothesised that down-regulation of the anti-inflammatory nuclear transcription regulator peroxisome proliferator-activated receptor gamma (PPARγ in non-CF bronchiectasis subjects may explain why this exuberant neutrophilic inflammation is able to persist unchecked in the inflamed airway. METHODS PPARγ gene expression was assessed in bronchoalveolar lavage fluid (BAL) of 35 macrolide naïve non-CF bronchiectasis subjects and compared with that in 20 healthy controls. Human RNA was extracted from pelleted BAL and PPARγ expression was determined by reverse-transcription quantitative PCR. Bacterial DNA was extracted from paired induced sputum and total bacterial load was determined by 16S rRNA qPCR. Quantification of individual bacterial species was achieved by qPCR. RESULTS PPARγ expression was lower in subjects with non-CF bronchiectasis compared with healthy control subjects (control: 1.00, IQR 0.55-1.44, n = 20 vs. Bronchiectasis: 0.49, IQR 0.12-0.89; n = 35; p<0.001, Mann-Whitney U test). This lower PPARγ expression correlated negatively with Pseudomonas aeruginosa (r = -0.53, n = 31; p = 0.002). No significant association was seen between PPARγ and total bacterial levels or levels Haemophilus influenzae. CONCLUSION PPARγ is expressed in low levels in the airways of non-CF bronchiectasis subjects, despite an aggressive inflammatory response. This low level PPARγ expression is particularly associated with the presence of high levels of P. aeruginosa, and may represent an intrinsic link with this bacterial pathogen.
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Affiliation(s)
- Lucy D. Burr
- Immunity, Infection and Inflammation Program, Mater Research—University of Queensland, Translational Research Institute, Wooloongabba, QLD, Australia
- Department of Respiratory Medicine, Mater Misericordiae Brisbane Ltd, South Brisbane, QLD, Australia
- * E-mail:
| | - Geraint B. Rogers
- SAHMRI Infection and Immunity Theme, School of Medicine, Flinders University, Adelaide, Australia
| | - Alice C-H Chen
- Immunity, Infection and Inflammation Program, Mater Research—University of Queensland, Translational Research Institute, Wooloongabba, QLD, Australia
| | - Steven L. Taylor
- SAHMRI Infection and Immunity Theme, School of Medicine, Flinders University, Adelaide, Australia
| | - Simon D. Bowler
- Department of Respiratory Medicine, Mater Misericordiae Brisbane Ltd, South Brisbane, QLD, Australia
| | - Rebecca L. Keating
- Department of Respiratory Medicine, Mater Misericordiae Brisbane Ltd, South Brisbane, QLD, Australia
| | - Megan L. Martin
- Department of Respiratory Medicine, Mater Misericordiae Brisbane Ltd, South Brisbane, QLD, Australia
| | - Sumaira Z. Hasnain
- Immunity, Infection and Inflammation Program, Mater Research—University of Queensland, Translational Research Institute, Wooloongabba, QLD, Australia
| | - Michael A. McGuckin
- Immunity, Infection and Inflammation Program, Mater Research—University of Queensland, Translational Research Institute, Wooloongabba, QLD, Australia
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3
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Chen ACH, Burr L, McGuckin MA. Oxidative and endoplasmic reticulum stress in respiratory disease. Clin Transl Immunology 2018; 7:e1019. [PMID: 29928501 PMCID: PMC5999202 DOI: 10.1002/cti2.1019] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 05/01/2018] [Accepted: 05/03/2018] [Indexed: 01/01/2023] Open
Abstract
Oxidative stress and endoplasmic reticulum (ER) stress are related states that can occur in cells as part of normal physiology but occur frequently in diseases involving inflammation. In this article, we review recent findings relating to the role of oxidative and ER stress in the pathophysiology of acute and chronic nonmalignant diseases of the lung, including infections, cystic fibrosis, idiopathic pulmonary fibrosis and asthma. We also explore the potential of drugs targeting oxidative and ER stress pathways to alleviate disease.
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Affiliation(s)
- Alice C-H Chen
- Diamantina Institute Faculty of Medicine The University of Queensland Brisbane QLD Australia.,Department of Cell and Molecular Therapy Royal Prince Alfred Hospital Sydney NSW Australia
| | - Lucy Burr
- Department of Respiratory Medicine Mater Adult Hospital and Mater Research Institute - The University of Queensland Raymond Tce, South Brisbane QLD Australia
| | - Michael A McGuckin
- Inflammatory Disease Biology and Therapeutics Group Translational Research Institute Mater Research Institute - The University of Queensland Brisbane QLD Australia
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Chen ACH, Pena OM, Nel HJ, Yerkovich ST, Chang AB, Baines KJ, Gibson PG, Petsky HL, Pizzutto SJ, Hodge S, Masters IB, Buntain HL, Upham JW. Airway cells from protracted bacterial bronchitis and bronchiectasis share similar gene expression profiles. Pediatr Pulmonol 2018; 53:575-582. [PMID: 29575797 DOI: 10.1002/ppul.23984] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 02/14/2018] [Indexed: 11/06/2022]
Abstract
AIM Protracted bacterial bronchitis (PBB) is a common cause of prolonged cough in young children, and may be a precursor of bronchiectasis. Bacteria are often present in the lower airways in both PBB and bronchiectasis and may cause persistent infections. However, there is a paucity of information available on the pathogenesis of PBB and the factors associated with persistent bacterial infection and progression to bronchiectasis. This study hypothesised that lung immune cells in recurrent PBB and bronchiectasis differentially express genes related to immune cell dysfunction compared to lung immune cells from control subjects. METHOD Cells isolated from bronchoalveolar lavage (adult-control and PBB BAL cells) were stimulated with nontypeable Haemophilus influenzae (NTHi), and expression of genes involved in various inflammatory pathways was assessed. RESULT NTHi induced production of large amounts of IL-1β, IL-6, and IL-8 in adult-control BAL cells, however BAL cells from PBB airways appeared refractory to NTHi stimulation. BAL cells from PBB and bronchiectasis showed differential expression of several genes relative to control cells, including CCL20, MARCO, CCL24, IL-10, PPAR-γ, CD200R, TREM2, RelB. Expression of genes involved in resolution of inflammation and anti-inflammation response, such as CD200R and IL-10, was associated with the number of pathogenic bacteria found in the airways. CONCLUSION In summary, we have shown that the expression of genes related to macrophage function and resolution of inflammation are similar in PBB and bronchiectasis. Lung immune cell dysfunction in PBB and bronchiectasis may contribute to poor bacterial clearance and prolonged resolution of inflammation.
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Affiliation(s)
- Alice C-H Chen
- Translational Research Institute, Princess Alexandra Hospital, Brisbane, Australia.,Diamantina Institute, The University of Queensland, Brisbane, Australia
| | - Olga M Pena
- Translational Research Institute, Princess Alexandra Hospital, Brisbane, Australia
| | - Hendrik J Nel
- Diamantina Institute, The University of Queensland, Brisbane, Australia
| | | | - Anne B Chang
- Queensland University of Technology, CCHR, Brisbane, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia
| | | | | | - Helen L Petsky
- Queensland University of Technology, CCHR, Brisbane, Australia
| | - Susan J Pizzutto
- Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia
| | | | - Ian B Masters
- Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Australia
| | | | - John W Upham
- Translational Research Institute, Princess Alexandra Hospital, Brisbane, Australia.,Diamantina Institute, The University of Queensland, Brisbane, Australia
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5
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Chen ACH, Tran HB, Xi Y, Yerkovich ST, Baines KJ, Pizzutto SJ, Carroll M, Robertson AAB, Cooper MA, Schroder K, Simpson JL, Gibson PG, Hodge G, Masters IB, Buntain HM, Petsky HL, Prime SJ, Chang AB, Hodge S, Upham JW. Multiple inflammasomes may regulate the interleukin-1-driven inflammation in protracted bacterial bronchitis. ERJ Open Res 2018; 4:00130-2017. [PMID: 29594175 PMCID: PMC5868518 DOI: 10.1183/23120541.00130-2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 02/08/2018] [Indexed: 11/21/2022] Open
Abstract
Protracted bacterial bronchitis (PBB) in young children is characterised by prolonged wet cough, prominent airway interleukin (IL)-1β expression and infection, often with nontypeable Haemophilus influenzae (NTHi). The mechanisms responsible for IL-1-driven inflammation in PBB are poorly understood. We hypothesised that the inflammation in PBB involves the NLRP3 and/or AIM2 inflammasome/IL-1β axis. Lung macrophages obtained from bronchoalveolar lavage (BAL), peripheral blood mononuclear cells (PBMCs), blood monocytes and monocyte-derived macrophages from patients with PBB and age-matched healthy controls were cultured in control medium or exposed to live NTHi. In healthy adult PBMCs, CD14+ monocytes contributed to 95% of total IL-1β-producing cells upon NTHi stimulation. Stimulation of PBB PBMCs with NTHi significantly increased IL-1β expression (p<0.001), but decreased NLRC4 expression (p<0.01). NTHi induced IL-1β secretion in PBMCs from both healthy controls and patients with recurrent PBB. This was inhibited by Z-YVAD-FMK (a caspase-1 selective inhibitor) and by MCC950 (a NLRP3 selective inhibitor). In PBB BAL macrophages inflammasome complexes were visualised as fluorescence specks of NLRP3 or AIM2 colocalised with cleaved caspase-1 and cleaved IL-1β. NTHi stimulation induced formation of specks of cleaved IL-1β, NLRP3 and AIM2 in PBMCs, blood monocytes and monocyte-derived macrophages. We conclude that both the NLRP3 and AIM2 inflammasomes probably drive the IL-1β-dominated inflammation in PBB. Airway IL-1β activation in protracted bacterial bronchitishttp://ow.ly/ut9r30iqim2
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Affiliation(s)
- Alice C-H Chen
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Joint first authors
| | - Hai B Tran
- Dept of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,Joint first authors
| | - Yang Xi
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | | | | | - Susan J Pizzutto
- Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia
| | - Melanie Carroll
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | | | | | - Kate Schroder
- Institute for Molecular Bioscience, Brisbane, Australia
| | | | | | - Greg Hodge
- Dept of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,Dept of Medicine, The University of Adelaide, Adelaide, Australia
| | - Ian B Masters
- Respiratory and Sleep Medicine, Lady Cilento Children's Hospital and Children's Centre for Health Research, Queensland University of Technology, Brisbane, Australia
| | | | - Helen L Petsky
- School of Nursing and Midwifery, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia
| | | | - Anne B Chang
- Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia.,Queensland University of Technology, Brisbane, Australia
| | - Sandra Hodge
- Dept of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,Dept of Medicine, The University of Adelaide, Adelaide, Australia.,Joint senior authors
| | - John W Upham
- Diamantina Institute, Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Joint senior authors
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6
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Chen ACH, Xi Y, Carroll M, Petsky HL, Gardiner SJ, Pizzutto SJ, Yerkovich ST, Baines KJ, Gibson PG, Hodge S, Masters IB, Buntain HM, Chang AB, Upham JW. Cytokine responses to two common respiratory pathogens in children are dependent on interleukin-1β. ERJ Open Res 2017; 3:00025-2017. [PMID: 29204435 PMCID: PMC5703357 DOI: 10.1183/23120541.00025-2017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 07/07/2017] [Indexed: 11/05/2022] Open
Abstract
Protracted bacterial bronchitis (PBB) in young children is a common cause of prolonged wet cough and may be a precursor to bronchiectasis in some children. Although PBB and bronchiectasis are both characterised by neutrophilic airway inflammation and a prominent interleukin (IL)-1β signature, the contribution of the IL-1β pathway to host defence is not clear. This study aimed to compare systemic immune responses against common pathogens in children with PBB, bronchiectasis and control children and to determine the importance of the IL-1β pathway. Non-typeable Haemophilus influenzae (NTHi) stimulation of peripheral blood mononuclear cells (PBMCs) from control subjects (n=20), those with recurrent PBB (n=20) and bronchiectasis (n=20) induced high concentrations of IL-1β, IL-6, interferon (IFN)-γ and IL-10. Blocking with an IL-1 receptor antagonist (IL-1Ra) modified the cellular response to pathogens, inhibiting cytokine synthesis by NTHi-stimulated PBMCs and rhinovirus-stimulated PBMCs (in a separate PBB cohort). Inhibition of IFN-γ production by IL-1Ra was observed across multiple cell types, including CD3+ T cells and CD56+ NK cells. Our findings highlight the extent to which IL-1β regulates the cellular immune response against two common respiratory pathogens. While blocking the IL-1β pathway has the potential to reduce inflammation, this may come at the cost of protective immunity against NTHi and rhinovirus.
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Affiliation(s)
- Alice C-H Chen
- Diamantina Institute, The University of Queensland, Brisbane, Australia.,These authors contributed equally
| | - Yang Xi
- Diamantina Institute, The University of Queensland, Brisbane, Australia.,These authors contributed equally
| | - Melanie Carroll
- Diamantina Institute, The University of Queensland, Brisbane, Australia
| | - Helen L Petsky
- Queensland University of Technology, CCHR, Brisbane, Australia
| | | | - Susan J Pizzutto
- Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia
| | | | | | | | | | - Ian B Masters
- Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Australia
| | | | - Anne B Chang
- Queensland University of Technology, CCHR, Brisbane, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin Hospital, Darwin, Australia
| | - John W Upham
- Diamantina Institute, The University of Queensland, Brisbane, Australia
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7
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Chen ACH, Lee YL, Fong SW, Wong CCY, Ng EHY, Yeung WSB. Hyperglycemia impedes definitive endoderm differentiation of human embryonic stem cells by modulating histone methylation patterns. Cell Tissue Res 2017; 368:563-578. [PMID: 28283910 DOI: 10.1007/s00441-017-2583-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 01/27/2017] [Indexed: 12/25/2022]
Abstract
Exposure to maternal diabetes during fetal growth is a risk factor for the development of type II diabetes (T2D) in later life. Discovery of the mechanisms involved in this association should provide valuable background for therapeutic treatments. Early embryogenesis involves epigenetic changes including histone modifications. The bivalent histone methylation marks H3K4me3 and H3K27me3 are important for regulating key developmental genes during early fetal pancreas specification. We hypothesized that maternal hyperglycemia disrupted early pancreas development through changes in histone bivalency. A human embryonic stem cell line (VAL3) was used as the cell model for studying the effects of hyperglycemia upon differentiation into definitive endoderm (DE), an early stage of the pancreatic lineage. Hyperglycemic conditions significantly down-regulated the expression levels of DE markers SOX17, FOXA2, CXCR4 and EOMES during differentiation. This was associated with retention of the repressive histone methylation mark H3K27me3 on their promoters under hyperglycemic conditions. The disruption of histone methylation patterns was observed as early as the mesendoderm stage, with Wnt/β-catenin signaling being suppressed during hyperglycemia. Treatment with Wnt/β-catenin signaling activator CHIR-99021 restored the expression levels and chromatin methylation status of DE markers, even in a hyperglycemic environment. The disruption of DE development was also found in mouse embryos at day 7.5 post coitum from diabetic mothers. Furthermore, disruption of DE differentiation in VAL3 cells led to subsequent impairment in pancreatic progenitor formation. Thus, early exposure to hyperglycemic conditions hinders DE development with a possible relationship to the later impairment of pancreas specification.
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Affiliation(s)
- A C H Chen
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Y L Lee
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China.
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, The University of Hong Kong, Shenzhen, People's Republic of China.
- Center for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China.
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Room 747, 21 Sassoon Road, Hong Kong, SAR, People's Republic of China.
| | - S W Fong
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - C C Y Wong
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - E H Y Ng
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, The University of Hong Kong, Shenzhen, People's Republic of China
- Center for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - W S B Yeung
- Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
- Shenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, The University of Hong Kong, Shenzhen, People's Republic of China
- Center for Reproduction, Development and Growth, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, People's Republic of China
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Hasnain SZ, Borg DJ, Harcourt BE, Tong H, Sheng YH, Ng CP, Das I, Wang R, Chen ACH, Loudovaris T, Kay TW, Thomas HE, Whitehead JP, Forbes JM, Prins JB, McGuckin MA. Glycemic control in diabetes is restored by therapeutic manipulation of cytokines that regulate beta cell stress. Nat Med 2014; 20:1417-26. [PMID: 25362253 DOI: 10.1038/nm.3705] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/30/2014] [Indexed: 02/07/2023]
Abstract
In type 2 diabetes, hyperglycemia is present when an increased demand for insulin, typically due to insulin resistance, is not met as a result of progressive pancreatic beta cell dysfunction. This defect in beta cell activity is typically characterized by impaired insulin biosynthesis and secretion, usually accompanied by oxidative and endoplasmic reticulum (ER) stress. We demonstrate that multiple inflammatory cytokines elevated in diabetic pancreatic islets induce beta cell oxidative and ER stress, with interleukin-23 (IL-23), IL-24 and IL-33 being the most potent. Conversely, we show that islet-endogenous and exogenous IL-22, by regulating oxidative stress pathways, suppresses oxidative and ER stress caused by cytokines or glucolipotoxicity in mouse and human beta cells. In obese mice, antibody neutralization of IL-23 or IL-24 partially reduced beta cell ER stress and improved glucose tolerance, whereas IL-22 administration modulated oxidative stress regulatory genes in islets, suppressed ER stress and inflammation, promoted secretion of high-quality efficacious insulin and fully restored glucose homeostasis followed by restitution of insulin sensitivity. Thus, therapeutic manipulation of immune regulators of beta cell stress reverses the hyperglycemia central to diabetes pathology.
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Affiliation(s)
- Sumaira Z Hasnain
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Danielle J Borg
- Glycation &Diabetes Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Brooke E Harcourt
- Glycation &Diabetes Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Hui Tong
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Yonghua H Sheng
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Choa Ping Ng
- Metabolic Medicine Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Indrajit Das
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Ran Wang
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Alice C-H Chen
- Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | | | - Thomas W Kay
- St. Vincent's Research Institute, Melbourne, Victoria, Australia
| | - Helen E Thomas
- St. Vincent's Research Institute, Melbourne, Victoria, Australia
| | - Jonathan P Whitehead
- 1] Metabolic Medicine Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia. [2] School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Josephine M Forbes
- 1] Glycation &Diabetes Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia. [2] School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Johannes B Prins
- 1] Metabolic Medicine Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia. [2] School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Michael A McGuckin
- 1] Mucosal Diseases Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia. [2] School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia. [3] School of Medicine, University of Queensland, Brisbane, Queensland, Australia
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9
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Hasnain SZ, Tauro S, Das I, Tong H, Chen ACH, Jeffery PL, McDonald V, Florin TH, McGuckin MA. IL-10 promotes production of intestinal mucus by suppressing protein misfolding and endoplasmic reticulum stress in goblet cells. Gastroenterology 2013; 144:357-368.e9. [PMID: 23123183 DOI: 10.1053/j.gastro.2012.10.043] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 10/23/2012] [Accepted: 10/28/2012] [Indexed: 01/24/2023]
Abstract
BACKGROUND & AIMS Protein misfolding and endoplasmic reticulum (ER) stress have been observed in intestinal secretory cells from patients with inflammatory bowel diseases and induce intestinal inflammation in mice. However, it is not clear how immune factors affect ER stress and therefore disease symptoms. METHODS We analyzed the effects of interleukin (IL)-10 on ER stress in intestinal tissues in wild-type C57BL/6, Winnie, IL-10(-/-), and Winnie × IL-10(+/-) mice. In Winnie mice, misfolding of the intestinal mucin Muc2 initiates ER stress and inflammation. We also analyzed the effects of different inhibitors of IL-10 signaling and the N-glycosylation inhibitor tunicamycin in cultured human LS174T goblet cells. RESULTS Administration of neutralizing antibodies against IL-10 or its receptor (IL-10R1) to Winnie mice rapidly exacerbated ER stress and intestinal inflammation compared with mice given vehicle (controls). Antibodies against IL-10 also increased accumulation of misfolded Muc2 in the ER of goblet cells of Winnie mice and increased T-cell production of inflammatory cytokines. Winnie × IL-10(+/-) mice and IL-10(-/-) mice with a single Winnie allele each developed more severe inflammation than Winnie mice or IL-10(-/-) mice. Administration of tunicamycin to wild-type mice caused intestinal ER stress, which increased when IL-10R1 was blocked. In LS174T cells, induction of ER stress with tunicamycin and misfolding of MUC2 were reduced by administration of IL-10; this reduction required STAT1 and STAT3. In LS174T cells incubated with tunicamycin, IL-10 up-regulated genes involved in MUC2 folding and in ER-associated degradation and maintained correct folding of MUC2, its transport from the ER, and its O-glycosylation and secretion. CONCLUSIONS IL-10 prevents protein misfolding and ER stress by maintaining mucin production in goblet cells and helps the intestine preserve the mucus barrier.
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Affiliation(s)
- Sumaira Z Hasnain
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Sharyn Tauro
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Indrajit Das
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Hui Tong
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Alice C-H Chen
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Penny L Jeffery
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Victoria McDonald
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Timothy H Florin
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia
| | - Michael A McGuckin
- Immunity, Infection and Inflammation Program, Mater Medical Research Institute, Mater Health Services and the University of Queensland, South Brisbane, Queensland, Australia.
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10
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Kempf M, Miyamura Y, Liu PY, Chen ACH, Nakamura H, Shimizu H, Tabata Y, Kimble RM, McMillan JR. A denatured collagen microfiber scaffold seeded with human fibroblasts and keratinocytes for skin grafting. Biomaterials 2011; 32:4782-92. [PMID: 21477857 DOI: 10.1016/j.biomaterials.2011.03.023] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Accepted: 03/09/2011] [Indexed: 12/20/2022]
Abstract
Biomaterial scaffolds are categorized into artificial or natural polymers, or combinations of the two. Artificial polymers often undergo serum protein adsorption, elicit foreign body and encapsulation immune responses post-implantation. Large pore bovine electrospun collagen I was therefore screened as a candidate for human keratinocyte and fibroblast cell scaffolds. Human HaCaT keratinocyte and dermal fibroblasts were seeded on electrospun denatured collagen I microfiber (DCM) scaffolds and after 72 h Livedead(®) assays performed to determine adhesive cell, survival and scaffold penetration. Both keratinocytes and fibroblasts attached to and survived on DCM scaffolds, however only fibroblasts migrated over and into this biomaterial. HaCaT keratinocytes remained largely stationary on the scaffold surface in discrete islands of monolayered cells. For this reason, normal human epidermal keratinocyte (NHEK) scaffold interactions were assessed using scanning and transmission electron microscopy (EM) that demonstrated DCM scaffolds comprised networks of interlocking and protruding collagen fibers with a mean diameter of 2-5 μm, with a mean inter-fiber pore size of 6.7 μm (range 3-10 μm) and scaffold thickness 50-70 μm. After 72 h the keratinocytes and fibroblasts on DCM scaffolds had attached, flattened and spread over the entire scaffold with assembly of lamellapodia and focal adhesion (FA)-like junctions. Using transmission EM, NHEKs and HaCaT keratinocytes assembled desmosomes, lamellapodia and FA junctions, however, neither hemidesmosomes nor basal lamina were present. In long term (21 day) co-culture fibroblasts migrated throughout the scaffold and primary keratinocytes (and to a lesser extend HaCaTs) stratified on the scaffold surface forming a human skin equivalent (HSE). In vivo testing of these HSEs on immunocompetent (BalbC) and immunodeficient (SCID) excisionally wounded model mice demonstrated scaffold wound biocompatibility and ability to deliver human cells after scaffold biodegradation.
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Affiliation(s)
- Margit Kempf
- Centre for Children's Burns and Trauma Research, The University of Queensland, Queensland Children's Medical Research Institute, Brisbane, Australia
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11
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Chen ACH, Waterboer T, Keleher A, Morrison B, Jindal S, McMillan D, Nicol D, Gardiner RA, McMillan NAJ, Antonsson A. Human papillomavirus in benign prostatic hyperplasia and prostatic adenocarcinoma patients. Pathol Oncol Res 2011; 17:613-7. [PMID: 21240663 DOI: 10.1007/s12253-010-9357-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 12/29/2010] [Indexed: 10/18/2022]
Abstract
The aim of this study was to determine the prevalence of human papillomavirus (HPV) types in tissue and HPV antibodies in prostatic disease. Prostate tissue samples were collected from 51 patients diagnosed with adenocarcinoma and 11 with benign prostatic hyperplasia (BPH). All tissue samples were confirmed by histology. Plasma samples were available for 52 prostate patients. We investigated HPV DNA prevalence by PCR, and PCR positive samples were HPV type determined by sequencing. Prevalence of antibodies against twenty-seven HPV proteins from fourteen different HPV types was assessed in the plasma samples. The HPV DNA prevalence in the tissue samples was 14% (7/51) for prostate cancer samples and 27% (3/11) for BPHs. HPV-18 was the only type detected in tissue samples (10/62). No significant difference in HPV prevalence between the prostate cancer and BPH samples was found. HPV-positive cells were identified in eight of our thirteen prostate tissue slides (3/3 BPH and 5/10 adenocarcinoma) by in situ hybridisation, and the positive cells were found in epithelial cells and peripheral blood cells. Serology data showed no significant increase in levels of antibodies against any of the HPV-18 proteins tested for in prostatic disease patients. Antibodies against HPV-1, HPV-4, HPV-6 and HPV-11 were significantly higher in the group of males with prostatic disease. Our study did not show an association between prostatic disease and either presence of HPV DNA in samples or previous exposure of high-risk HPV.
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Affiliation(s)
- Alice C-H Chen
- The University of Queensland, Diamantina Institute for Cancer, Immunology and Metabolic Medicine, Princess Alexandra Hospital, Brisbane, Australia
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12
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Kruzich PJ, Chen ACH, Unterwald EM, Kreek MJ. Subject-regulated dosing alters morphine self-administration behavior and morphine-stimulated [35S]GTPgammaS binding. Synapse 2003; 47:243-9. [PMID: 12539196 DOI: 10.1002/syn.10173] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Repeated intake of opioids is associated with dose escalation and alterations in signal transduction at the G-protein-coupled receptor level. The current study utilized two experiments to identify factors in rats that influence consumption rates such as daily intake of self-administered morphine and receptor desensitization. In Experiment 1, rats self-administered either 0.30, 1.00, or 3.00 mg/kg/infusion morphine sulfate (morphine) during 7 daily 4-h sessions. For Experiment 2, rats were assigned to groups that self-administered either 1) self-regulated escalating doses of morphine, 2) a fixed dose of morphine, or 3) saline during 18-h sessions for 7 days to determine if dose control would increase consumption without significantly decreasing response rate. We then assessed morphine-stimulated [(35)S]GTPgammaS binding in the amygdala and thalamus from these three groups in Experiment 2. Results from Experiment 1 demonstrated that 0.30 mg/kg/morphine did not support stable self-administration. For Experiment 2, the self-escalation group self-administered more morphine than the fixed-dose group, yet maintained similar response rates. Additionally, self-escalation rats demonstrated decreased morphine-stimulated [(35)S]GTPgammaS binding in membranes prepared from amygdalar and thalamic nuclei compared to the fixed-dose and control groups. Our results suggest that session length inversely affects consumption rates for fixed doses of morphine. Self-regulated dosing of morphine is also associated with rapid escalation of daily consumption and no significant alterations in consumption rates. These results suggest subject-regulated dosing is a useful approach for modeling dose escalation associated with opioid dependence.
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Affiliation(s)
- P J Kruzich
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, New York 10021, USA.
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