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Nedoszytko B, Lange M, Renke J, Niedoszytko M, Zabłotna M, Gleń J, Nowicki R. The Possible Role of Gene Variant Coding Nonfunctional Toll-Like Receptor 2 in the Pathogenesis of Mastocytosis. Int Arch Allergy Immunol 2018; 177:80-86. [PMID: 29909409 DOI: 10.1159/000489343] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 04/17/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Data on the genetic predisposition to mastocytosis are scarce. The aim of this work was to study the association of single nucleotide polymorphisms of Toll-like receptor (TLR)-2, TLR-4, and TLR-9 genes in Polish patients with mastocytosis. OBJECTIVES The study comprised 137 patients with mastocytosis (102 cutaneous [60 children and 42 adults] and 35 systemic cases); 171 disease-free individuals were used as controls. METHOD The frequency of polymorphisms R753Q (rs5743708) of TLR-2, 896 A>G (rs496790) of TLR-4, and -1237C>T (rs5743836) of TLR-9 genes were determined with the use of the amplification refractory mutation system polymerase chain reaction method. RESULTS It was found that the R753Q TLR-2 gene polymorphism was significantly more frequent in patients with mastocytosis in comparison to healthy controls (p = 0.037) and in the group of SM versus controls (p = 0.0076). The presence in the genotype 753Q variant of TLR-2 gene increased the risk of mastocytosis more than 2-fold (OR 2.51; p = 0.04), and the risk of SM more than 4-fold (OR 4.22; p = 0.01). TLR-4 and TLR-9 polymorphisms were not associated with mastocytosis. CONCLUSIONS Our results suggest that the R753Q polymorphism of the TLR-2 gene may be involved in the pathogenesis of mastocytosis.
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Affiliation(s)
- Bogusław Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Joanna Renke
- Department of General and Medical Biochemistry, University of Gdansk, Gdansk, Poland
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Monika Zabłotna
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Jolanta Gleń
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Roman Nowicki
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
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Impact of Fungi on Immune Responses. Clin Ther 2018; 40:885-888. [PMID: 29752039 DOI: 10.1016/j.clinthera.2018.04.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 04/09/2018] [Accepted: 04/18/2018] [Indexed: 12/25/2022]
Abstract
Spores and fungal fragments found in indoor and outdoor environments originate from opportunistic fungi and they can contribute to inflammatory responses, causing a broad range of symptoms. Papers were selected and reviewed with an emphasis on the molecular mechanisms involved in the effect of fungi on immune cells, especially mast cells (MCs). Fungi can bind to antibodies and complement them, allowing them to be recognized by cells of the innate immune system, including macrophages, dendritic cells, and MCs, which are then stimulated via Toll-like receptor signaling. Fungi can cause diseases mediated by MCs and aggravate allergic inflammation. Immunosuppressed subjects can be particularly susceptible to developing diseases caused by opportunistic fungi. Mold also liberates mycotoxins that could be on volatile spores and stimulate MCs to secrete pro-inflammatory cytokines/chemokines, but this mechanism is not known. Fungi can activate the immune system directly or through mycotoxins, leading to stimulation of immune cells and chronic neuroinflammatory symptoms. Some of these processes may be inhibited by the new anti-inflammatory cytokine interleukin 37.
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Toll-like receptors-mediated pathways activate inflammatory responses in the esophageal mucosa of adult eosinophilic esophagitis. Clin Transl Gastroenterol 2018; 9:147. [PMID: 29691386 PMCID: PMC5915448 DOI: 10.1038/s41424-018-0017-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/16/2018] [Accepted: 02/22/2018] [Indexed: 12/19/2022] Open
Abstract
Objectives Esophageal microbiota and regulation of adaptive immunity are increasingly being investigated in eosinophilic esophagitis (EoE). Toll-like receptors (TLRs) play a central role in the initiation and maintenance of innate immune activity. Our objective was to characterize the esophageal and duodenal innate immune response in EoE and its modulation by dietary therapy. Methods Esophageal and duodenal biopsy samples were collected from 10 adults with untreated EoE, before and after effective treatment with a six-food elimination diet (SFED), and 10 controls with normal esophagus. In all cases, bacterial load (by mRNA expression of 16S), TLRs, mucins, transcription factors, interleukins, components of the NKG2D system, and innate immunity effectors were assessed by qPCR. Protein expression of TLRs were also determined by immunofluorescence. Results Bacterial load and TLR1, TLR2, TLR4, and TLR9 were overexpressed on biopsies with active EoE compared with controls. Muc1 and Muc5B genes were downregulated while Muc4 was overexpressed. Upregulation of MyD88 and NFκB was found together with IL-1β, IL-6, IL-8, and IL-10 mediators and PER-1, iNOS, and GRZA effectors. NG-K2D components (KLRK1, IL-15, MICB) were also upregulated. In all cases, changes in active EoE were normalized following SFED and mucosal healing. Duodenal samples also showed increased expressions of TLR-1, TLR-2, and TLR-4, but not 16S or any other mediators nor effectors of inflammation. Conclusions Esophageal TLR-dependent signaling pathways in EoE support the potential implication of microbiota and the innate immune system in the pathogenesis of this disease.
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Immormino RM, Lauzier DC, Nakano H, Hernandez ML, Alexis NE, Ghio AJ, Tilley SL, Doerschuk CM, Peden DB, Cook DN, Moran TP. Neuropilin-2 regulates airway inflammatory responses to inhaled lipopolysaccharide. Am J Physiol Lung Cell Mol Physiol 2018; 315:L202-L211. [PMID: 29671604 PMCID: PMC6139664 DOI: 10.1152/ajplung.00067.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Neuropilins are multifunctional receptors that play important roles in immune regulation. Neuropilin-2 (NRP2) is expressed in the lungs, but whether it regulates airway immune responses is unknown. Here, we report that Nrp2 is weakly expressed by alveolar macrophages (AMs) in the steady state but is dramatically upregulated following in vivo lipopolysaccharide (LPS) inhalation. Ex vivo treatment of human AMs with LPS also increased NRP2 mRNA expression and cell-surface display of NRP2 protein. LPS-induced Nrp2 expression in AMs was dependent upon the myeloid differentiation primary response 88 signaling pathway and the transcription factor NF-κB. In addition to upregulating display of NRP2 on the cell membrane, inhaled LPS also triggered AMs to release soluble NRP2 into the airways. Finally, myeloid-specific ablation of NRP2 resulted in increased expression of the chemokine (C-C motif) ligand 2 ( Ccl2) in the lungs and prolonged leukocyte infiltration in the airways following LPS inhalation. These findings suggest that NRP2 expression by AMs regulates LPS-induced inflammatory cell recruitment to the airways and reveal a novel role for NRP2 during innate immune responses in the lungs.
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Affiliation(s)
- Robert M Immormino
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina , Chapel Hill, North Carolina
| | - David C Lauzier
- Department of Pediatrics, University of North Carolina , Chapel Hill, North Carolina
| | - Hideki Nakano
- Immunity, Inflammation and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health , Research Triangle Park, North Carolina
| | - Michelle L Hernandez
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina , Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina , Chapel Hill, North Carolina
| | - Neil E Alexis
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina , Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina , Chapel Hill, North Carolina
| | - Andrew J Ghio
- National Health and Environmental Effects Research Laboratory, Environmental Protection Agency , Chapel Hill, North Carolina
| | - Stephen L Tilley
- Department of Medicine, University of North Carolina , Chapel Hill, North Carolina
| | - Claire M Doerschuk
- Department of Medicine, University of North Carolina , Chapel Hill, North Carolina
| | - David B Peden
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina , Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina , Chapel Hill, North Carolina
| | - Donald N Cook
- Immunity, Inflammation and Disease Laboratory, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health , Research Triangle Park, North Carolina
| | - Timothy P Moran
- Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina , Chapel Hill, North Carolina.,Department of Pediatrics, University of North Carolina , Chapel Hill, North Carolina
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Singh DP, Kaur G, Bagam P, Pinkston R, Batra S. Membrane microdomains regulate NLRP10- and NLRP12-dependent signalling in A549 cells challenged with cigarette smoke extract. Arch Toxicol 2018; 92:1767-1783. [PMID: 29623357 DOI: 10.1007/s00204-018-2185-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 03/13/2018] [Indexed: 12/22/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is predicted to become the third leading cause of death and disability worldwide by 2030; with cigarette smoking (active or passive) being one of the chief cause of its occurrence. Cigarette smoke exposure has been found to result in excessive inflammation and tissue injury, which might lead to COPD, although the exact pathophysiology of the disease remains elusive. While previous studies have demonstrated the role of membrane-bound Toll-like receptors (TLRs) in cigarette smoke (CS)-induced inflammation, scant information is available about the role of cytosolic NOD-like receptors (NLRs) in regulating CS-mediated inflammatory responses. Thus, we investigated the role of NLRP10 and NLRP12 in regulating inflammatory responses in human alveolar type II epithelial cells (A549) and human monocytic cells (THP-1) in response to a challenge with cigarette smoke extract (CSE). We observed CSE-mediated increase in caspase-1 activity; production of IL-1β and IL-18; and expression of NLRP10 and NLRP12 in A549 and THP-1 cells. Interestingly, immunofluorescence imaging results demonstrated an increase in the membrane recruitment of NLRP10 and NLRP12 proteins in CSE-challenged A549 cells. We also observed an increase in the expression of lipid raft proteins (caveolin-1, caveolin-2, and flotillin-1) and an induction of lipid raft assembly following CSE-exposure in A549 cells. Lipid rafts are cholesterol-rich membrane microdomains well known to act as harbours for signalling molecules. Here we demonstrate the recruitment of NLRP10 and NLRP12 in lipid raft entities as well as the interaction of NLRP12 with the lipid raft protein caveolin-1 in CSE-challenged A549 cells. Furthermore, enrichment of lipid raft entities with poly-unsaturated fatty acids (PUFA) rescued A549 cells from CSE-mediated membrane recruitment of NLRP10 and NLRP12, and also from inflammatory responses and inflammasome activation. Enrichment of membrane microdomains with PUFA was able to reverse filipin (chemical agent used for disrupting lipid rafts)-mediated enhanced inflammation in CSE-challenged A549 cells. Overall, our findings unveil a novel mechanism by identifying an important role of membrane microdomains (lipid rafts) in regulating CSE-induced inflammation and NLRP10/NLRP12-dependent signalling in A549 cells.
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Affiliation(s)
- Dhirendra P Singh
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Gagandeep Kaur
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Prathyusha Bagam
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Rakeysha Pinkston
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Sanjay Batra
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA. .,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, USA.
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Wang L, Wang M, Li S, Wu H, Shen Q, Zhang S, Fang L, Liu R. Nebulized lidocaine ameliorates allergic airway inflammation via downregulation of TLR2. Mol Immunol 2018; 97:94-100. [PMID: 29609129 DOI: 10.1016/j.molimm.2018.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 03/10/2018] [Accepted: 03/18/2018] [Indexed: 01/15/2023]
Abstract
Nebulized lidocaine has been suggested to be beneficial in asthma therapy, but the underlying mechanisms are little known. We aimed to investigate whether Toll-like receptor (TLR) 2 was involved in the protective effect of lidocaine on allergic airway inflammation. Female C57BL/6 mice were sensitized and challenged with ovalbumin (OVA). Meanwhile, some of the mice were treated with TLR2 agonist (Pam3CSK4, 100 μg) intraperitoneally in combination with OVA on day 0. Just after allergen provocation, mice were treated with inhaled lidocaine or vehicle for 30 min. In this model, we found that lidocaine markedly attenuated OVA-evoked airway inflammation, leukocyte recruitment and mucus production. Moreover, lidocaine abrogated the increased concentrations of T cytokines and TNF-α in bronchoalveolar lavage fluid (BALF) of allergic mice, as well as reducing the expression of phosphorylated nuclear factor (P-NF)-κBp65 and the NOD-like receptor pyridine containing 3 (NLRP3), which are important for the production of pro-inflammatory cytokines. In addition, our study showed that lidocaine dramatically decreased OVA-induced increased expression of TLR2 in the lung tissues. Furthermore, activation of TLR2 aggravated OVA-challenged airway inflammation, meanwhile, it also elevated OVA-induced expression of P-NF-κBp65 and NLRP3 in the lungs. However, lidocaine effectively inhibited airway inflammation and counteracted the expression of P-NF-κBp65 and NLRP3 in allergic mice pretreated with Pam3CSK4. Taken together, the present study demonstrated that lidocaine prevented allergic airway inflammation via TLR2 in an OVA-induced murine allergic airway inflammation model. TLR2/NF-κB/NLRP3 pathway may serve as a promising therapeutic strategy for allergic airway inflammation.
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Affiliation(s)
- Lixia Wang
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China; Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Muzi Wang
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Shuai Li
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Huimei Wu
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Qiying Shen
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Shihai Zhang
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Lei Fang
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China
| | - Rongyu Liu
- Department of Pulmonary, Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Jixi Road 218, Hefei, Anhui 230022, PR China.
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Kao ST, Kuo YH, Wang SD, Hong HJ, Lin LJ. Analogous corticosteroids, 9A and EK100, derived from solid-state-cultured mycelium of Antrodia camphorata inhibit proinflammatory cytokine expression in macrophages. Cytokine 2018; 108:136-144. [PMID: 29605763 DOI: 10.1016/j.cyto.2018.03.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 03/23/2018] [Accepted: 03/23/2018] [Indexed: 12/13/2022]
Abstract
Antrodia camphorata mycelium is used in traditional Chinese medicine in Taiwan. The wild-type mycelium is rare and expensive, so a solid-state-cultured mycelium of A. camphorata (SCMAC) has been developed. Previous studies have found SCMAC to have anti-inflammatory effects. However, the immunomodulatory effects of SCMAC and of its active phytosterol compounds EK100 and 9A on asthma remain unknown. In this study, BALB/c mice were repeatedly exposed to Dermatogoides pteronyssinus (Der p) at 1-week intervals and were orally administered crude SCMAC extract before the Der p challenge. The mice were sacrificed 72 h after the last challenge to examine the airway remodeling, inflammation, and expression profiles of cytokines and various genes. Then, 30-µg/mL Der p-stimulated MH-S cells with 9A or EK100 were collected for real-time PCR analysis, and the effects of 9A and EK100 on macrophages were evaluated. The crude extract reduced Der p-induced airway hyperresponsiveness, total serum immunoglobulin E levels, and recruitment of inflammatory cells to the bronchoalveolar lavage fluid through cytokine downregulation and Th1/Th2/Th17 response modulation. Additionally, 9A and EK100 inhibited IL-1β and IL-6 expression in alveolar macrophages. These results indicate that the pharmacologically active compounds in a crude SCMAC extract exert synergistic effects on multiple targets to relieve asthma symptoms.
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Affiliation(s)
- Shung-Te Kao
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan; Department of Chinese Medicine, China Medical University Hospital, Taichung 40402, Taiwan.
| | - Yueh-Hsiung Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan; Department of Biotechnology, Asia University, Taichung 41354, Taiwan.
| | - Shulhn-Der Wang
- School of Post-Baccalaureate Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
| | - Hong-Jye Hong
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
| | - Li-Jen Lin
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
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Mishra V, Banga J, Silveyra P. Oxidative stress and cellular pathways of asthma and inflammation: Therapeutic strategies and pharmacological targets. Pharmacol Ther 2018; 181:169-182. [PMID: 28842273 PMCID: PMC5743757 DOI: 10.1016/j.pharmthera.2017.08.011] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Asthma is a complex inflammatory disease characterized by airway inflammation and hyperresponsiveness. The mechanisms associated with the development and progression of asthma have been widely studied in multiple populations and animal models, and these have revealed involvement of various cell types and activation of intracellular signaling pathways that result in activation of inflammatory genes. Significant contributions of Toll-like-receptors (TLRs) and transcription factors such as NF-кB, have been reported as major contributors to inflammatory pathways. These have also recently been associated with mechanisms of oxidative biology. This is of important clinical significance as the observed inefficacy of current available treatments for severe asthma is widely attributed to oxidative stress. Therefore, targeting oxidizing molecules in conjunction with inflammatory mediators and transcription factors may present a novel therapeutic strategy for asthma. In this review, we summarize TLRs and NF-кB pathways in the context of exacerbation of asthma pathogenesis and oxidative biology, and we discuss the potential use of polyphenolic flavonoid compounds, known to target these pathways and possess antioxidant activity, as potential therapeutic agents for asthma.
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Affiliation(s)
- Vikas Mishra
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Departments of Pediatrics, The Pennsylvania State University, College of Medicine, Hershey, PA, USA
| | - Jaspreet Banga
- The Feinstein Institute for Medical Research, Center for Autoimmune and Musculoskeletal Diseases, Manhasset, NY, USA
| | - Patricia Silveyra
- Departments of Pediatrics, The Pennsylvania State University, College of Medicine, Hershey, PA, USA; Biochemistry and Molecular Biology, The Pennsylvania State University, College of Medicine, Hershey, PA, USA.
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Tripathi PM, Kant S, Yadav RS, Kushwaha RAS, Prakash V, Rizvi SHM, Parveen A, Mahdi AA, Ahmad I. Expression of Toll-like Receptor 2 and 4 in Peripheral Blood Neutrophil Cells from Patients with Chronic Obstructive Pulmonary Disease. Oman Med J 2017; 32:477-485. [PMID: 29218124 DOI: 10.5001/omj.2017.92] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Objectives Chronic obstructive pulmonary disease (COPD) is one of the leading causes of morbidity and mortality around the world. Preliminary studies have evaluated the association between innate immunity including Toll-like receptors (TLRs) and airway samples of patients with COPD. The role of TLRs in peripheral blood neutrophils is poorly understood. Hence, this study aimed to investigate the role of TLR2 and TLR4 in peripheral blood neutrophils of COPD patients. Methods A total of 101 COPD cases and an equal number of healthy controls participated in this case-control study. Peripheral blood neutrophils were isolated from all participants and cultured for 24 hours through lipopolysaccharide (LPS) stimulation. The gene expressions of TLR2 and TLR4 were assessed by real-time polymerase chain reaction. The protein levels of interleukin (IL)-8 and matrix metalloproteinase (MMP)-9 were measured in neutrophils cell culture supernatants using enzyme-linked immunosorbent assay (ELISA). Results The levels of IL-8 and MMP-9 were significantly higher in patients with COPD compared to healthy controls. Similarly, the gene expression of TLR2 and TLR4 were increased in LPS stimulated peripheral blood neutrophils of patients with COPD. Smoke pack years was positively correlated with IL-8 levels and negatively correlated with forced expiratory volume in the first second % (r = -0.33; p = 0.023) and FEV1/forced vital capacity (FVC) (r = -0.27; p = 0.011). Conclusions The increased expression of TLR2 and TLR4 suggests its role in disease pathogenesis of COPD. Smoke pack years was negatively associated with spirometric parameters in COPD patients. This may help to predict the smokers without COPD who risk developing the condition in the future.
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Affiliation(s)
- Prashant Mani Tripathi
- Department of Respiratory Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Surya Kant
- Department of Respiratory Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ravi Shanker Yadav
- Department of Respiratory Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ram Awadh Singh Kushwaha
- Department of Respiratory Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Ved Prakash
- Department of Respiratory Medicine, King George's Medical University, Lucknow, Uttar Pradesh, India
| | | | - Arshiya Parveen
- Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Abbas Ali Mahdi
- Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Iqbal Ahmad
- Fibre Toxicology Division, CSIR Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
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TSPO PET Imaging: From Microglial Activation to Peripheral Sterile Inflammatory Diseases? CONTRAST MEDIA & MOLECULAR IMAGING 2017; 2017:6592139. [PMID: 29114179 PMCID: PMC5632884 DOI: 10.1155/2017/6592139] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 08/01/2017] [Accepted: 08/07/2017] [Indexed: 02/07/2023]
Abstract
Peripheral sterile inflammatory diseases (PSIDs) are a heterogeneous group of disorders that gathers several chronic insults involving the cardiovascular, respiratory, gastrointestinal, or musculoskeletal system and wherein inflammation is the cornerstone of the pathophysiology. In PSID, timely characterization and localization of inflammatory foci are crucial for an adequate care for patients. In brain diseases, in vivo positron emission tomography (PET) exploration of inflammation has matured over the last 20 years, through the development of radiopharmaceuticals targeting the translocator protein-18 kDa (TSPO) as molecular biomarkers of activated microglia. Recently, TSPO has been introduced as a possible molecular target for PSIDs PET imaging, making this protein a potential biomarker to address disease heterogeneity, to assist in patient stratification, and to contribute to predicting treatment response. In this review, we summarized the major research advances recently made in the field of TSPO PET imaging in PSIDs. Promising preliminary results have been reported in bowel, cardiovascular, and rheumatic inflammatory diseases, consolidated by preclinical studies. Limitations of TSPO PET imaging in PSIDs, regarding both its large expression in healthy peripheral tissues, unlike in central nervous system, and the production of peripheral radiolabeled metabolites, are also discussed, regarding their possible consequences on TSPO PET signal's quantification.
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The Effects of Resveratrol on Inflammation and Oxidative Stress in a Rat Model of Chronic Obstructive Pulmonary Disease. Molecules 2017; 22:molecules22091529. [PMID: 28895883 PMCID: PMC6151812 DOI: 10.3390/molecules22091529] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/06/2017] [Indexed: 11/20/2022] Open
Abstract
Oxidative stress and inflammation are hypothesized to contribute to the pathogenesis of chronic obstructive pulmonary disease (COPD). Resveratrol (trans-3,5,4′-trihydroxystilbene) is known for its antioxidant and anti-inflammatory properties. The study aimed to investigate the effects of resveratrol in a rat model with COPD on the regulation of oxidative stress and inflammation via the activation of Sirtuin1 (SIRTl) and proliferator-activated receptor-γ coactivator-1α (PGC-1α). Thirty Wistar rats were randomly divided into three groups: control group, COPD group and resveratrol intervention group. The COPD model was established by instilling with lipopolysaccharide (LPS) and challenging with cigarette smoke (CS). The levels of interleukin-6 (IL-6) and interleukin-8 (IL-8) in serum were measured. The levels of malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) were measured. The expression levels of SIRT1 and PGC-1α in the lung tissues were examined by immunohistochemistry as well as real-time reverse transcriptase polymerase chain reaction (real-time RT-PCR) and western blotting analysis. After the treatment with resveratrol (50 mg/kg), compared with the COPD group, alleviation of inflammation and reconstruction in the small airways of the lungs were seen. Resveratrol might be correlated not only with the lower level of MDA and the higher activity of SOD, but also with the upregulation of SIRT1 and PGC-1α expression. Resveratrol treatment decreased serum levels of IL-6 and IL-8. Our findings indicate that resveratrol had a therapeutic effect in our rat COPD model, which is related to the inhibition of oxidative stress and inflammatory response. The mechanism may be related to the activation and upgrading of the SIRT1/PGC-1α signaling pathways. Thus resveratrol might be a therapeutic modality in COPD.
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Eapen MS, Myers S, Walters EH, Sohal SS. Airway inflammation in chronic obstructive pulmonary disease (COPD): a true paradox. Expert Rev Respir Med 2017; 11:827-839. [PMID: 28743228 DOI: 10.1080/17476348.2017.1360769] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Chronic obstructive pulmonary disease (COPD) is primarily an airway condition, which mainly affects cigarette smokers and presents with shortness of breath that is progressive and poorly reversible. In COPD research, there has been a long held belief that airway disease progression is due to inflammation. Although this may be true in the airway lumen with innate immunity activated by the effect of smoke or secondary to infection, the accurate picture of inflammatory cells in the airway wall, where the pathophysiological COPD remodeling occurs, is uncertain and debatable. Areas covered: The current review provides a comprehensive literature survey of the changes in the main inflammatory cells in human COPD patients and focuses on contrarian views that affect the prevailing dogma on inflammation. The review also delves into the role of oxidative stress and inflammasomes in modulating the immune response in COPD. Further, the effects of inflammation in affecting the epithelium, fibroblasts, and airway remodeling are discussed. Expert commentary: Inflammation as a driving force for airway wall damage and remodelling in early COPD is at the very least 'oversimplified' and is likely to be misleading. This has serious implications for rational thinking about the illness, including pathogenesis and designing therapy.
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Affiliation(s)
- Mathew Suji Eapen
- a Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine , University of Tasmania , Hobart , Australia
| | - Stephen Myers
- b School of Health Sciences , University of Tasmania , Launceston , Australia
| | - Eugene Haydn Walters
- a Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine , University of Tasmania , Hobart , Australia
| | - Sukhwinder Singh Sohal
- a Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine , University of Tasmania , Hobart , Australia.,b School of Health Sciences , University of Tasmania , Launceston , Australia
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63
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Lee G, Jung KH, Ji ES, Bae H. Pyranopyran-1,8-dione, an Active Compound from Vitices Fructus, Attenuates Cigarette-Smoke Induced Lung Inflammation in Mice. Int J Mol Sci 2017; 18:ijms18071602. [PMID: 28737721 PMCID: PMC5536088 DOI: 10.3390/ijms18071602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 07/21/2017] [Accepted: 07/21/2017] [Indexed: 01/10/2023] Open
Abstract
Previously, we isolated and identified pyranopyran-1,8-dione (PPY) from Viticis Fructus, as a bioactive compound possessing anti-inflammatory properties. The present study was aimed to evaluate the preventive benefit of PPY on cigarette-smoke (CS)-induced lung inflammation. C57BL/6 mice were exposed to CS for 2 weeks while PPY was administrated by oral injection 2 h before CS exposure. To validate the anti-inflammatory effects of PPY, the numbers of immune cells in the bronchoalveolar lavage fluid were counted. Proinflammatory cytokines (Tumor necrosis factor-α: TNF-α, IL-6) and keratinocyte chemokine (KC/CXCL1) were also measured. Histopathologic analysis and cellular profiles showed that inflammatory cell infiltrations were significantly decreased in peribronchial and perivascular area by PPY treatment. The alveolar destruction by CS was markedly ameliorated by PPY treatment. In addition, the TNF-α, IL-6, and KC levels were declined in the PPY groups. These observations suggest that PPY has a preventive potential for lung inflammatory diseases.
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Affiliation(s)
- Gihyun Lee
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Kyung-Hwa Jung
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Eun Seok Ji
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
| | - Hyunsu Bae
- Department of Physiology, College of Korean Medicine, Kyung Hee University, 26 kyungheedae-ro, dongdaemoon-gu, Seoul 02447, Republic of Korea.
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64
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Reinmuth-Selzle K, Kampf CJ, Lucas K, Lang-Yona N, Fröhlich-Nowoisky J, Shiraiwa M, Lakey PSJ, Lai S, Liu F, Kunert AT, Ziegler K, Shen F, Sgarbanti R, Weber B, Bellinghausen I, Saloga J, Weller MG, Duschl A, Schuppan D, Pöschl U. Air Pollution and Climate Change Effects on Allergies in the Anthropocene: Abundance, Interaction, and Modification of Allergens and Adjuvants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:4119-4141. [PMID: 28326768 PMCID: PMC5453620 DOI: 10.1021/acs.est.6b04908] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 03/07/2017] [Accepted: 03/22/2017] [Indexed: 05/13/2023]
Abstract
Air pollution and climate change are potential drivers for the increasing burden of allergic diseases. The molecular mechanisms by which air pollutants and climate parameters may influence allergic diseases, however, are complex and elusive. This article provides an overview of physical, chemical and biological interactions between air pollution, climate change, allergens, adjuvants and the immune system, addressing how these interactions may promote the development of allergies. We reviewed and synthesized key findings from atmospheric, climate, and biomedical research. The current state of knowledge, open questions, and future research perspectives are outlined and discussed. The Anthropocene, as the present era of globally pervasive anthropogenic influence on planet Earth and, thus, on the human environment, is characterized by a strong increase of carbon dioxide, ozone, nitrogen oxides, and combustion- or traffic-related particulate matter in the atmosphere. These environmental factors can enhance the abundance and induce chemical modifications of allergens, increase oxidative stress in the human body, and skew the immune system toward allergic reactions. In particular, air pollutants can act as adjuvants and alter the immunogenicity of allergenic proteins, while climate change affects the atmospheric abundance and human exposure to bioaerosols and aeroallergens. To fully understand and effectively mitigate the adverse effects of air pollution and climate change on allergic diseases, several challenges remain to be resolved. Among these are the identification and quantification of immunochemical reaction pathways involving allergens and adjuvants under relevant environmental and physiological conditions.
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Affiliation(s)
| | - Christopher J. Kampf
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Institute
of Inorganic and Analytical Chemistry, Johannes
Gutenberg University, Mainz, 55128, Germany
| | - Kurt Lucas
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Naama Lang-Yona
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | | | - Manabu Shiraiwa
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Pascale S. J. Lakey
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Senchao Lai
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
- South
China University of Technology, School of
Environment and Energy, Guangzhou, 510006, China
| | - Fobang Liu
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Anna T. Kunert
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Kira Ziegler
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Fangxia Shen
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Rossella Sgarbanti
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Bettina Weber
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
| | - Iris Bellinghausen
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Joachim Saloga
- Department
of Dermatology, University Medical Center, Johannes Gutenberg University, Mainz, 55131, Germany
| | - Michael G. Weller
- Division
1.5 Protein Analysis, Federal Institute
for Materials Research and Testing (BAM), Berlin, 12489, Germany
| | - Albert Duschl
- Department
of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - Detlef Schuppan
- Institute
of Translational Immunology and Research Center for Immunotherapy,
Institute of Translational Immunology, University Medical Center, Johannes Gutenberg University, Mainz, 55131 Germany
- Division
of Gastroenterology, Beth Israel Deaconess
Medical Center and Harvard Medical School, Boston, Massachusetts 02215, United States
| | - Ulrich Pöschl
- Multiphase
Chemistry Department, Max Planck Institute
for Chemistry, Mainz, 55128, Germany
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Yang M, Wang HY, Chen JC, Zhao J. Regulation of airway inflammation and remodeling in asthmatic mice by TLR3/TRIF signal pathway. Mol Immunol 2017; 85:265-272. [PMID: 28342933 DOI: 10.1016/j.molimm.2017.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/02/2017] [Accepted: 03/04/2017] [Indexed: 12/17/2022]
Abstract
This paper aims to investigate the effect of Toll-like receptors 3 (TLR3)/TIR-domain-containing adapter-inducing interferon-β (TRIF) signal pathway on the airway inflammation and remodeling in asthmatic mice. C57BL/6 and TLR3-/- mice were randomly divided into three groups (10 mice per group), including Control group (mice inhaled phosphate buffer saline (PBS)), Asthma group (mice inhaled ovalbumin (OVA)) and polyriboinosinic-ribocytidylic acid (poly (I: C)) group (asthmatic mice were injected intraperitoneally with TLR3 agonist poly (I: C)). Hematoxylin-eosin (HE) staining, Wright-Giemsa staining, Enzyme-linked immunosorbent assay (ELISA), Immunohistochemistry, Hydroxyproline assay, quantitative real time polymerase chain reaction (qRT-PCR) and Western blot were used to assess for the indices of airway inflammation and remodeling. In terms of WT mice, all asthma groups with or without the addition of poly (I: C) showed exaggerated inflammation and remodeling in the airways as compared to Control group, which were more seriously in poly (I: C) group than Asthma group. Furthermore, we observed the significant inhibition of airway inflammation and remodeling in the TLR3-/- mice in both Asthma no matter with or without addition of poly (I: C) than the WT mice. TLR3 knockout could obviously relieve the airway inflammation and remodeling in asthma through inhibiting TLR3/TRIF signaling pathway.
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Affiliation(s)
- Mei Yang
- Department of critical care medicine, The Third People's Hospital of Jinan, Jinan 250132, Shandong, PR China.
| | - Hao-Ying Wang
- Department of critical care medicine, The Third People's Hospital of Jinan, Jinan 250132, Shandong, PR China
| | - Jian-Chang Chen
- Department of emergency, Shandong Provincial Western Hospital, Jinan 250021, Shandong, PR China
| | - Jing Zhao
- Department of cardiology, Qilu Hospital Affiliated to Shandong University, Jinan 250012, PR China
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Expression of Toll-like receptors 2, 4 and 6 in different cell populations of the equine endometrium. Vet Immunol Immunopathol 2017; 185:7-13. [DOI: 10.1016/j.vetimm.2017.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 11/07/2016] [Accepted: 01/19/2017] [Indexed: 11/20/2022]
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Xu H, Wu Y, Li L, Yuan W, Zhang D, Yan Q, Guo Z, Huang W. MiR-344b-1-3p targets TLR2 and negatively regulates TLR2 signaling pathway. Int J Chron Obstruct Pulmon Dis 2017; 12:627-638. [PMID: 28243080 PMCID: PMC5317246 DOI: 10.2147/copd.s120415] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objectives COPD is an abnormal inflammatory response characterized by decreased expression of TLR2 in patients, which is suggested to induce invasive pulmonary aspergillosis (IPA). MicroRNAs (miRNAs) have been shown to play important roles in the pathogenesis of human respiratory system disorders. Therefore, the aim of this study was to identify the miRNAs involved in the regulation of TLR2 signaling in COPD. Materials and methods miRNA microarray analysis was performed to screen for the dysregulated miRNAs in alveolar macrophages (AMs) isolated from COPD rats. The interaction between these miRNAs and TLR2 gene was predicted using miRBase and validated using dual luciferase assay. Based on the analysis, a novel miR-344b-1-3p was identified as a novel modulator of TLR2 gene. Then, the mechanism through which miR-344b-1-3p regulated TLR2 expression was explored using cigarette smoke extract (CSE)-pretreated NR8383 cells. Moreover, by subjecting CSE-pretreated NR8383 cells to Pam3CSK4, the effect of miR-344b-1-3p on NF-κB activity and other important mediators of COPD, including IRAK-1, ERK, TNF-α, IL-1β, and MIP-2, was also assessed. Results COPD rat model was successfully induced by smoke inhalation. Among the 11 upregulated miRNAs in AMs from COPD rats, miR-344b-1-3p was predicted to be a novel miRNA targeting TLR2 gene. In the CSE pretreated NR8383 cells exposed to Pam3CSK4, miR-344b-1-3p inhibition increased the expression levels of TLR2, TNF-α, and IL-1β and decreased the expression levels of MIP-2. In addition, the phosphorylation of IRAK-1, IκBα, and IRK was augmented by miR-344b-1-3p inhibition. Conclusion Findings outlined in this study suggest that miR-344b-1-3p was an effective modulator of TLR2 gene, which can be employed as a promising therapeutic and preventive target of IPA in COPD patients.
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Affiliation(s)
- Hong Xu
- Department of Respiratory Medicine; Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
| | - Yuting Wu
- Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support; Department of Geriatric Respiratory Medicine, General Hospital of Guangzhou Command of PLA, Guangzhou, Guangdong, People's Republic of China
| | - Li Li
- Department of Respiratory Medicine; Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
| | - Weifeng Yuan
- Department of Respiratory Medicine; Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
| | - Deming Zhang
- Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support; Department of Geriatric Respiratory Medicine, General Hospital of Guangzhou Command of PLA, Guangzhou, Guangdong, People's Republic of China
| | - Qitao Yan
- Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
| | - Zhenhui Guo
- Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
| | - Wenjie Huang
- Department of Respiratory Medicine; Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support; Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support
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Sibilano R, Gaudenzio N, DeGorter MK, Reber LL, Hernandez JD, Starkl PM, Zurek OW, Tsai M, Zahner S, Montgomery SB, Roers A, Kronenberg M, Yu M, Galli SJ. A TNFRSF14-FcɛRI-mast cell pathway contributes to development of multiple features of asthma pathology in mice. Nat Commun 2016; 7:13696. [PMID: 27982078 PMCID: PMC5171877 DOI: 10.1038/ncomms13696] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 10/26/2016] [Indexed: 01/07/2023] Open
Abstract
Asthma has multiple features, including airway hyperreactivity, inflammation and remodelling. The TNF superfamily member TNFSF14 (LIGHT), via interactions with the receptor TNFRSF14 (HVEM), can support TH2 cell generation and longevity and promote airway remodelling in mouse models of asthma, but the mechanisms by which TNFSF14 functions in this setting are incompletely understood. Here we find that mouse and human mast cells (MCs) express TNFRSF14 and that TNFSF14:TNFRSF14 interactions can enhance IgE-mediated MC signalling and mediator production. In mouse models of asthma, TNFRSF14 blockade with a neutralizing antibody administered after antigen sensitization, or genetic deletion of Tnfrsf14, diminishes plasma levels of antigen-specific IgG1 and IgE antibodies, airway hyperreactivity, airway inflammation and airway remodelling. Finally, by analysing two types of genetically MC-deficient mice after engrafting MCs that either do or do not express TNFRSF14, we show that TNFRSF14 expression on MCs significantly contributes to the development of multiple features of asthma pathology.
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Affiliation(s)
- Riccardo Sibilano
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Nicolas Gaudenzio
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Marianne K. DeGorter
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Laurent L. Reber
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Immunology, Unit of Antibodies in Therapy and Pathology, INSERM U1222, Institut Pasteur, Paris 75015, France
| | - Joseph D. Hernandez
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Philipp M. Starkl
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences and Department of Medicine I, Research Laboratory of Infection Biology, Medical University of Vienna, Vienna 1090, Austria
| | - Oliwia W. Zurek
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Mindy Tsai
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Sonja Zahner
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA
| | - Stephen B. Montgomery
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Axel Roers
- Institute for Immunology, Technische Universität Dresden, Dresden 01307, Germany
| | - Mitchell Kronenberg
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA
| | - Mang Yu
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Stephen J. Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA
- Department of Microbiology and Immunology and Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, California 94305, USA
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Ma Y, Lei H, Tan J, Xuan L, Wu X, Liu Q. Characterization of γδ regulatory T cells from peripheral blood in patients with multiple myeloma. Biochem Biophys Res Commun 2016; 480:594-601. [PMID: 27793666 DOI: 10.1016/j.bbrc.2016.10.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 10/25/2016] [Indexed: 11/28/2022]
Abstract
γδ regulatory T cells are able to inhibit the activation and function of T cells involved in antigen-specific immune responses. This study aimed to investigate the potential role of γδ regulatory T cells in inhibiting anti-tumor immune responses in patients diagnosed as multiple myeloma (MM). We measured the levels of γδ T cells, the distribution and clonally amplified TCR Vγ and VδT cells in peripheral blood of healthy donors, patients recently diagnosed with MM, and MM patients in remission cohorts. In addition, we evaluated the ability of γδ regulatory T cells to inhibit the proliferation of CD4+CD25- T cells and detected the expression of immunoregulatory-associated molecules. We found that the levels of γδ regulatory T cells from the peripheral blood in patients of MM were significantly higher than those in healthy donors. Comparison of γδT regulatory cells function in MM and healthy donors showed similarly inhibitory effects on the proliferation of T cells. Additionally, TLR8 expression level increased significantly in MM patients compared to healthy donors, while the expression levels of Foxp3, CD25, CTLA4, GITR, GATA3 and Tbet in MM patients and healthy donors showed no significant difference. Taken together, our study reveals the potential role of γδ regulatory T cells in inhibiting anti-tumor immune responses in MM patients.
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Affiliation(s)
- Yongyong Ma
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510010, China; Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Huyi Lei
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510010, China
| | - Jie Tan
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510010, China
| | - Li Xuan
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510010, China
| | - Xiuli Wu
- Institute of Hematology, Medical College, Jinan University, Guangzhou, 510632, China
| | - Qifa Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510010, China.
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Abstract
The discovery of an ever-expanding plethora of coding and non-coding RNAs with nodal and causal roles in the regulation of lung physiology and disease is reinvigorating interest in the clinical utility of the oligonucleotide therapeutic class. This is strongly supported through recent advances in nucleic acids chemistry, synthetic oligonucleotide delivery and viral gene therapy that have succeeded in bringing to market at least three nucleic acid-based drugs. As a consequence, multiple new candidates such as RNA interference modulators, antisense, and splice switching compounds are now progressing through clinical evaluation. Here, manipulation of RNA for the treatment of lung disease is explored, with emphasis on robust pharmacological evidence aligned to the five pillars of drug development: exposure to the appropriate tissue, binding to the desired molecular target, evidence of the expected mode of action, activity in the relevant patient population and commercially viable value proposition.
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Yang H, Kozicky L, Saferali A, Fung SY, Afacan N, Cai B, Falsafi R, Gill E, Liu M, Kollmann TR, Hancock REW, Sly LM, Turvey SE. Endosomal pH modulation by peptide-gold nanoparticle hybrids enables potent anti-inflammatory activity in phagocytic immune cells. Biomaterials 2016; 111:90-102. [PMID: 27728817 DOI: 10.1016/j.biomaterials.2016.09.032] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/22/2016] [Accepted: 09/26/2016] [Indexed: 12/21/2022]
Abstract
Toll-like receptor (TLR) signaling plays a central role in the pathophysiology of many acute and chronic human inflammatory diseases, and pharmacological regulation of TLR responses is anticipated to be beneficial in many inflammatory conditions. Currently there are no specific TLR inhibitors in clinical use. To overcome this challenge, we have developed a nano-based TLR inhibitor (peptide-gold nanoparticle hybrids) that inhibits a broad spectrum of TLR responses. Through mechanistic studies, we established that specific peptide decorated-gold nanoparticles that display high cellular uptake in phagocytic immune cells modulate endosomal pH, leading to significant attenuation of signaling through multiple TLRs. Using a global transcriptomic approach, we defined the broad anti-inflammatory activity of the nanoparticle in human peripheral blood mononuclear cells. In vivo studies confirmed the beneficial immunomodulatory activity since treatment with the nanoparticle significantly reduced weight loss, improved the disease activity index, and ameliorated colonic inflammation in a murine model of intestinal inflammation. This work enhances our fundamental understanding of the role of peptide coatings on the nanoparticle surface in regulating innate immune signaling, and identifies specific peptide decorated nanoparticles that may represent a novel class of anti-inflammatory therapeutics for human inflammatory diseases.
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Affiliation(s)
- Hong Yang
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada; Department of Respiratory Medicine, Shanghai First People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201620, China.
| | - Lisa Kozicky
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Aabida Saferali
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Shan-Yu Fung
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Nicole Afacan
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Bing Cai
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Reza Falsafi
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Erin Gill
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Mingyao Liu
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, University Health Network, Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ontario, M5G 1L7, Canada
| | - Tobias R Kollmann
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - R E W Hancock
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Laura M Sly
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada
| | - Stuart E Turvey
- BC Children's Hospital and Child & Family Research Institute, Department of Pediatrics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 4H4, Canada.
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Pomerenke A, Lea SR, Herrick S, Lindsay MA, Singh D. Characterization of TLR-induced inflammatory responses in COPD and control lung tissue explants. Int J Chron Obstruct Pulmon Dis 2016; 11:2409-2417. [PMID: 27729782 PMCID: PMC5047739 DOI: 10.2147/copd.s105156] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Viruses are a common cause of exacerbations in chronic obstructive pulmonary disease (COPD). They activate toll-like receptors (TLRs) 3, 7, and 8, leading to a pro-inflammatory response. We have characterized the responses of TLR3 and TLR7/8 in lung tissue explants from COPD patients and control smokers. METHODS We prepared lung whole tissue explants (WTEs) from patients undergoing surgery for confirmed or suspected lung cancer. In order to mimic the conditions of viral infection, we used poly(I:C) for TLR3 stimulation and R848 for TLR7/8 stimulation. These TLR ligands were used alone and in combination. The effects of tumor necrosis factor α (TNFα) neutralization and dexamethasone on TLR responses were examined. Inflammatory cytokine release was measured by enzyme-linked immunosorbent assay and gene expression by quantitative real-time polymerase chain reaction. RESULTS WTEs from COPD patients released higher levels of pro-inflammatory cytokines compared with WTEs from smokers. Activation of multiple TLRs led to a greater than additive release of TNFα and CCL5. TNFα neutralization and dexamethasone treatment decreased cytokine release. CONCLUSION This WTE model shows an enhanced response of COPD compared with controls, suggesting an increased response to viral infection. There was amplification of innate immune responses with multiple TLR stimulation.
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Affiliation(s)
- Anna Pomerenke
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester and University Hospital of South Manchester, NHS Foundation Trust
| | - Simon R Lea
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester and University Hospital of South Manchester, NHS Foundation Trust
| | - Sarah Herrick
- Institute of Inflammation and Repair, Manchester Academic Health Science Centre, University of Manchester, Manchester
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK
| | - Dave Singh
- Centre for Respiratory Medicine and Allergy, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester and University Hospital of South Manchester, NHS Foundation Trust
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Pouwels SD, van Geffen WH, Jonker MR, Kerstjens HAM, Nawijn MC, Heijink IH. Increased neutrophil expression of pattern recognition receptors during COPD exacerbations. Respirology 2016; 22:401-404. [DOI: 10.1111/resp.12912] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 07/14/2016] [Accepted: 08/15/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Simon D. Pouwels
- Department of Pathology and Medical Biology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
| | - Wouter H. van Geffen
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- Department of Pulmonology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
| | - Marnix R. Jonker
- Department of Pathology and Medical Biology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
| | - Huib A. M. Kerstjens
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- Department of Pulmonology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
| | - Martijn C. Nawijn
- Department of Pathology and Medical Biology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
| | - Irene H. Heijink
- Department of Pathology and Medical Biology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- GRIAC Research Institute, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
- Department of Pulmonology, University of Groningen; University Medical Center Groningen; Groningen The Netherlands
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74
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Gomez C, Chanez P. The lung microbiome: the perfect culprit for COPD exacerbations? Eur Respir J 2016; 47:1034-6. [PMID: 27037309 DOI: 10.1183/13993003.00270-2016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Carine Gomez
- Dept of Respiratory Diseases, Lung Transplant Team APHM, URMITE CNRS IRD UMR 6236, IHU Méditerranée Infection, Aix-Marseille University, Marseille, France
| | - Pascal Chanez
- Dept of Respiratory Diseases APHM, INSERM CNRS U 1067, UMR7333, Aix-Marseille University, Marseille France
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Zakeri A, Yazdi FG. Toll-like receptor-mediated involvement of innate immune cells in asthma disease. Biochim Biophys Acta Gen Subj 2016; 1861:3270-3277. [PMID: 27543676 DOI: 10.1016/j.bbagen.2016.08.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 08/15/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Innate immune cells as the first line of defense are adept at recognizing and triggering appropriate response against various pathogens. Apart from the protective functions, the innate immunity plays an essential role in mediation of allergic responses. Dendritic cells (DCs) and airway epithelial cells (AECs) along with other innate cells such as granulocytes, natural killer cells (NKs), natural killer T cells (NKTs), and alternatively activated macrophages (AAMs) are able to orchestrate allergic responses, especially asthma. Chronic stimulation of TLRs by airway stimuli induces local inflammation which gradually results in the recruitment and settling of innate cells around airways. SCOPE OF REVIEW This review discusses how recruitment and accumulation of the inflammatory cells in the site of insult facilitate hypersensitivity reactions and initiate airway inflammation. We indicate that these cells are well equipped to highly sensitive receptors known as toll-like receptors (TLRs) making them fit to prime adaptive immune response. Based on emerging findings, we highlight the pivotal role of TLRs in regulation of innate cells function in the context of asthma disease. MAJOR CONCLUSIONS Stimulation of the TLRs of innate cells by allergens has been found to accelerate and regulate allergic airway inflammation. In fact, the sophisticated interaction between environmental allergens and TLRs leads to release of various pro-inflammatory mediators from innate cells supporting asthma development. GENERAL SIGNIFICANCE This review highlights that TLRs have a substantial role in priming innate cells and cytokine release, suggesting that the involvement of TLRs of innate immune cells can modulate the function of these cells in asthma disease.
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Affiliation(s)
- Amin Zakeri
- Immunology Section, Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Fariba Ghiamati Yazdi
- Department of Food Science and Technology, Faculty of Agriculture, Isfahan University of Technology, Isfahan 84156, Iran
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Holding the Inflammatory System in Check: TLRs and Their Targeted Therapy in Asthma. Mediators Inflamm 2016; 2016:2180417. [PMID: 27274620 PMCID: PMC4870363 DOI: 10.1155/2016/2180417] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/13/2016] [Indexed: 02/06/2023] Open
Abstract
Inflammation is a complex biological response to detrimental stimuli and can be a double-edged sword. Inflammation plays a protective role in removing pathogenic factors, but dysregulated inflammation is associated with several major fatal diseases such as asthma, cancer, and cardiovascular diseases. Asthma is a complex heterogenous disease caused by genetic and environmental factors. TLRs are the primary proteins associated with the innate and adaptive immune responses to these fatal factors and play an important role in recognizing pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs), which initiates the downstream immune response. Due to the complex TLRs cascade and nowadays unsuccessful control in asthma, new studies are focused on TLRs and other potential targets in TLR cascade to minimize airway inflammation.
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77
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Hall SC, Agrawal DK. Toll-like receptors, triggering receptor expressed on myeloid cells family members and receptor for advanced glycation end-products in allergic airway inflammation. Expert Rev Respir Med 2016; 10:171-84. [PMID: 26678062 PMCID: PMC4955846 DOI: 10.1586/17476348.2016.1133303] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Asthma is a chronic disorder of the airways characterized by cellular infiltration, airway hyper-responsive and airway inflammation. Innate immune cells are the first line of defense against endogenous and exogenous signals in the airways and as such possess a diverse array of pattern recognition receptors. Toll-like receptors are crucial sentinels which when activated, can either promote or ameliorate the inflammatory response in predisposed individuals. The recently discovered triggering receptor expressed on myeloid cells family members are emerging mediators of inflammation. These receptors are believed to modulate inflammatory responses by collaborating with classic PRRs. Endogenous signals like HMGB-1, signaling through the receptor for advanced glycation end products, also promotes inflammation, however, its contribution to inflammation in the airways is not well known. Here, we discuss the role of each receptor in airway inflammation and highlight potential synergistic mechanisms, which contribute to disease pathogenesis in allergic asthma.
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Affiliation(s)
- Sannette C. Hall
- Department of Biomedical Science, Creighton University School of Medicine, Omaha, NE, USA
| | - Devendra K. Agrawal
- Department of Biomedical Science, Creighton University School of Medicine, Omaha, NE, USA
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, NE, USA
- Center for Clinical and Translational Science Creighton University School of Medicine, Omaha, NE, USA
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