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Portacci A, Iorillo I, Maselli L, Amendolara M, Quaranta VN, Dragonieri S, Carpagnano GE. The Role of Galectins in Asthma Pathophysiology: A Comprehensive Review. Curr Issues Mol Biol 2024; 46:4271-4285. [PMID: 38785528 PMCID: PMC11119966 DOI: 10.3390/cimb46050260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/25/2024] Open
Abstract
Galectins are a group of β-galactoside-binding proteins with several roles in immune response, cellular adhesion, and inflammation development. Current evidence suggest that these proteins could play a crucial role in many respiratory diseases such as pulmonary fibrosis, lung cancer, and respiratory infections. From this standpoint, an increasing body of evidence have recognized galectins as potential biomarkers involved in several aspects of asthma pathophysiology. Among them, galectin-3 (Gal-3), galectin-9 (Gal-9), and galectin-10 (Gal-10) are the most extensively studied in human and animal asthma models. These galectins can affect T helper 2 (Th2) and non-Th2 inflammation, mucus production, airway responsiveness, and bronchial remodeling. Nevertheless, while higher Gal-3 and Gal-9 concentrations are associated with a stronger degree of Th-2 phlogosis, Gal-10, which forms Charcot-Leyden Crystals (CLCs), correlates with sputum eosinophilic count, interleukin-5 (IL-5) production, and immunoglobulin E (IgE) secretion. Finally, several galectins have shown potential in clinical response monitoring after inhaled corticosteroids (ICS) and biologic therapies, confirming their potential role as reliable biomarkers in patients with asthma.
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Affiliation(s)
- Andrea Portacci
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
| | - Ilaria Iorillo
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
| | - Leonardo Maselli
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
| | - Monica Amendolara
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
| | | | - Silvano Dragonieri
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
| | - Giovanna Elisiana Carpagnano
- Institute of Respiratory Disease, Department of Translational Biomedicine and Neuroscience, University “Aldo Moro”, 70121 Bari, Italy; (I.I.); (L.M.); (M.A.); (S.D.); (G.E.C.)
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2
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Ding J, Garber JJ, Uchida A, Lefkovith A, Carter GT, Vimalathas P, Canha L, Dougan M, Staller K, Yarze J, Delorey TM, Rozenblatt-Rosen O, Ashenberg O, Graham DB, Deguine J, Regev A, Xavier RJ. An esophagus cell atlas reveals dynamic rewiring during active eosinophilic esophagitis and remission. Nat Commun 2024; 15:3344. [PMID: 38637492 PMCID: PMC11026436 DOI: 10.1038/s41467-024-47647-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 04/09/2024] [Indexed: 04/20/2024] Open
Abstract
Coordinated cell interactions within the esophagus maintain homeostasis, and disruption can lead to eosinophilic esophagitis (EoE), a chronic inflammatory disease with poorly understood pathogenesis. We profile 421,312 individual cells from the esophageal mucosa of 7 healthy and 15 EoE participants, revealing 60 cell subsets and functional alterations in cell states, compositions, and interactions that highlight previously unclear features of EoE. Active disease displays enrichment of ALOX15+ macrophages, PRDM16+ dendritic cells expressing the EoE risk gene ATP10A, and cycling mast cells, with concomitant reduction of TH17 cells. Ligand-receptor expression uncovers eosinophil recruitment programs, increased fibroblast interactions in disease, and IL-9+IL-4+IL-13+ TH2 and endothelial cells as potential mast cell interactors. Resolution of inflammation-associated signatures includes mast and CD4+ TRM cell contraction and cell type-specific downregulation of eosinophil chemoattractant, growth, and survival factors. These cellular alterations in EoE and remission advance our understanding of eosinophilic inflammation and opportunities for therapeutic intervention.
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Affiliation(s)
- Jiarui Ding
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Department of Computer Science, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - John J Garber
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA.
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
| | - Amiko Uchida
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Ariel Lefkovith
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Grace T Carter
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Praveen Vimalathas
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Lauren Canha
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Michael Dougan
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Kyle Staller
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Joseph Yarze
- Gastrointestinal Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Toni M Delorey
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Orit Rozenblatt-Rosen
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Genentech, South San Francisco, CA, 94080, USA
| | - Orr Ashenberg
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Daniel B Graham
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Jacques Deguine
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA
| | - Aviv Regev
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA.
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA.
- Genentech, South San Francisco, CA, 94080, USA.
| | - Ramnik J Xavier
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA.
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
- Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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3
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Yang HW, Park JH, Jo MS, Shin JM, Kim DW, Park IH. Eosinophil-Derived Osteopontin Induces the Expression of Pro-Inflammatory Mediators and Stimulates Extracellular Matrix Production in Nasal Fibroblasts: The Role of Osteopontin in Eosinophilic Chronic Rhinosinusitis. Front Immunol 2022; 13:777928. [PMID: 35309360 PMCID: PMC8924074 DOI: 10.3389/fimmu.2022.777928] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/08/2022] [Indexed: 12/12/2022] Open
Abstract
Background Eosinophilic chronic rhinosinusitis (ECRS) is a subtype of chronic rhinosinusitis (CRS) and is a refractory or intractable disease. However, a reliable clinical marker or an effective treatment strategy has not yet been established. ECRS is accompanied by excessive eosinophil infiltration and Th2 inflammatory response, which is closely related to tissue remodeling in the upper airways. Objectives We sought to investigate the effect of eosinophils on tissue remodeling in ECRS. The purpose of this study was to identify the effects of eosinophils on the expression of pro-inflammatory mediators and extracellular matrix (ECM) in nasal fibroblasts and the key mediators that stimulate them. Methods Butyric acid was used to differentiate EOL-1 cells into eosinophils. We co-cultured differentiated EOL-1 cells and fibroblasts to measure the expression of pro-inflammatory mediators and ECM in fibroblasts. Among the cytokines secreted from the differentiated EOL-1 cells, factors that induced tissue remodeling of fibroblasts were identified. Results Treatment with butyric acid (BA) differentiated EOL-1 cells into eosinophils. Differentiated EOL-1 cells induced fibroblasts to produce pro-inflammatory mediators, IL-6 and IL-8, and tissue remodeling factor, VEGF. It also induced myofibroblast differentiation and overexpression of ECM components. Differentiated EOL-1 cells overexpressed osteopontin (OPN), and recombinant OPN increased the expression of IL-6, IL-8, VEGF, and ECM components in nasal fibroblast. OPN was overexpressed in the nasal tissue of patients with ECRS and was associated with the severity of CRS. Conclusions Eosinophil-derived OPN stimulated nasal fibroblasts and contributed to inflammation and tissue remodeling in ECRS. Moreover, the expression level of OPN was proportional to the severity of ECRS. Therefore, OPN regulation is a potential treatment for ECRS.
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Affiliation(s)
- Hyun-Woo Yang
- Upper Airway Chronic Inflammatory Diseases Laboratory, Korea University College of Medicine, Seoul, South Korea
| | - Joo-Hoo Park
- Upper Airway Chronic Inflammatory Diseases Laboratory, Korea University College of Medicine, Seoul, South Korea
| | - Min-Sik Jo
- Upper Airway Chronic Inflammatory Diseases Laboratory, Korea University College of Medicine, Seoul, South Korea
| | - Jae-Min Shin
- Upper Airway Chronic Inflammatory Diseases Laboratory, Korea University College of Medicine, Seoul, South Korea.,Medical Device Usability Test Center, Guro Hospital, Korea University College of Medicine, Seoul, South Korea.,Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, South Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea
| | - Il-Ho Park
- Upper Airway Chronic Inflammatory Diseases Laboratory, Korea University College of Medicine, Seoul, South Korea.,Medical Device Usability Test Center, Guro Hospital, Korea University College of Medicine, Seoul, South Korea.,Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, South Korea
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Lopes-Ferreira M, Sosa-Rosales I, Silva Junior PI, Conceicao K, Maleski ALA, Balan-Lima L, Disner GR, Lima C. Molecular Characterization and Functional Analysis of the Nattectin-like Toxin from the Venomous Fish Thalassophryne maculosa. Toxins (Basel) 2021; 14:toxins14010002. [PMID: 35050979 PMCID: PMC8778695 DOI: 10.3390/toxins14010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/08/2021] [Accepted: 11/15/2021] [Indexed: 01/02/2023] Open
Abstract
TmC4-47.2 is a toxin with myotoxic activity found in the venom of Thalassophryne maculosa, a venomous fish commonly found in Latin America whose envenomation produces an injury characterized by delayed neutrophil migration, production of major pro-inflammatory cytokines, and necrosis at the wound site, as well as a specific systemic immune response. However, there are few studies on the protein structure and functions associated with it. Here, the toxin was identified from the crude venom by chromatography and protein purification systems. TmC4-47.2 shows high homology with the Nattectin from Thalassophryne nattereri venom, with 6 cysteines and QPD domain for binding to galactose. We confirm its hemagglutinating and microbicide abilities independent of carbohydrate binding, supporting its classification as a nattectin-like lectin. After performing the characterization of TmC4-47.2, we verified its ability to induce an increase in the rolling and adherence of leukocytes in cremaster post-capillary venules dependent on the α5β1 integrin. Finally, we could observe the inflammatory activity of TmC4-47.2 through the production of IL-6 and eotaxin in the peritoneal cavity with sustained recruitment of eosinophils and neutrophils up to 24 h. Together, our study characterized a nattectin-like protein from T. maculosa, pointing to its role as a molecule involved in the carbohydrate-independent agglutination response and modulation of eosinophilic and neutrophilic inflammation.
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Affiliation(s)
- Monica Lopes-Ferreira
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil; (A.L.A.M.); (L.B.-L.); (G.R.D.); (C.L.)
- Correspondence:
| | - Ines Sosa-Rosales
- Escuela de Ciências Aplicadas del Mar, Universidad de Oriente, Boca de Rio 6304, Venezuela;
| | - Pedro Ismael Silva Junior
- Protein Chemistry Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil;
| | - Katia Conceicao
- Peptide Biochemistry Laboratory, UNIFESP, Sao Jose dos Campos 12247-014, Brazil;
| | - Adolfo Luis Almeida Maleski
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil; (A.L.A.M.); (L.B.-L.); (G.R.D.); (C.L.)
- Post-Graduation Program of Toxinology, Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil
| | - Leticia Balan-Lima
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil; (A.L.A.M.); (L.B.-L.); (G.R.D.); (C.L.)
| | - Geonildo Rodrigo Disner
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil; (A.L.A.M.); (L.B.-L.); (G.R.D.); (C.L.)
| | - Carla Lima
- Immunoregulation Unit of the Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, Vital Brasil Avenue, 1500 Butantan, Sao Paulo 05503-009, Brazil; (A.L.A.M.); (L.B.-L.); (G.R.D.); (C.L.)
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5
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Ge X, Shi K, Hou J, Fu Y, Xiao H, Chi F, Xu J, Cai F, Bai C. Galectin-1 secreted by bone marrow-derived mesenchymal stem cells mediates anti-inflammatory responses in acute airway disease. Exp Cell Res 2021; 407:112788. [PMID: 34418459 DOI: 10.1016/j.yexcr.2021.112788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 08/16/2021] [Accepted: 08/17/2021] [Indexed: 12/27/2022]
Abstract
The hallmarks of allergic airway disease (AAD) include infiltration of inflammatory cells into the bronchoalveolar space. Bone marrow derived mesenchymal stem cells (BMSCs) show anti-inflammatory properties in AAD. In addition, galectin-1 (Gal-1) is a lectin significantly upregulated upon inflammation and is also known to mediate potential anti-inflammatory responses. We hypothesized that BMSCs regulated inflammatory responses by secretion of Gal-1 during AAD pathogenesis. BMSCs were isolated from murine femurs and tibiae and adoptively transferred into an ovalbumin-induced AAD mouse model. Knockdown of Gal-1 in BMSCs was performed using shRNA. Flow cytometry, ELISAs, and immunohistology were performed to analyze inflammatory responses in mice, and a Transwell system was used to establish an in vitro co-culture system of lung epithelial cells (MLE-12) and BMSCs. Administration of BMSCs significantly upregulated Gal-1 expression upon inflammation and decreased infiltration of inflammatory cells and secretion of proinflammatory cytokines in vivo. In addition, we showed that this function was mediated by reduced activation of the MAPK p38 signaling pathway. Similar observations were found using an in vitro lipopolysaccharide-induced model when MLE-12 cells were co-cultured with BMSCs. Gal-1 secretion by BMSCs alleviated inflammatory responses observed in AAD and hence provides a promising therapeutic alternative to AAD patients insensitive to conventional drug treatments.
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Affiliation(s)
- Xiahui Ge
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China.
| | - Kehua Shi
- Department of Respiratory Medicine, Shanghai Hospital of Traditional Chinese Medicine, Shanghai, 200071, China
| | - Jia Hou
- Department of Respiratory and Critical Care Medicine, General Hospital of Ningxia Medical University, Ningxia, 750004, China
| | - Youhui Fu
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China
| | - Hua Xiao
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China
| | - Feng Chi
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China
| | - Jing Xu
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China
| | - Feng Cai
- Department of Respiratory Medicine, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, China
| | - Chong Bai
- Department of Respiratory and Critical Care Medicine, Changhai Hospital, Naval Medical University (Second Military Medical University), Shanghai, 200433, China.
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6
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Yi L, Zhang S, Feng Y, Wu W, Chang C, Chen D, Chen S, Zhao J, Zhen G. Increased epithelial galectin-13 expression associates with eosinophilic airway inflammation in asthma. Clin Exp Allergy 2021; 51:1566-1576. [PMID: 34075657 DOI: 10.1111/cea.13961] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/20/2021] [Accepted: 05/23/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Airway eosinophilic inflammation is a central feature in asthma which is mainly driven by type 2 response. The expression of galectin-13 was up-regulated in a parasitic infection model which is also characterized by type 2 immune response. We hypothesized that galectin-13 may be involved in airway eosinophilic inflammation in asthma. OBJECTIVE To unveil the role of galectin-13 in asthma airway inflammation. METHODS We measured galectin-13 expressions in bronchial brushings, sputum, and plasma of asthma patients (n = 54) and healthy controls (n = 15), and analysed the correlations between galectin-13 expression and airway eosinophilia. We used human bronchial epithelial cell line 16HBE to investigate the possible mechanism by which galectin-13 participates in eosinophilic inflammation. RESULTS The expression of galectin-13 was markedly increased in subjects with asthma compared to controls. Epithelial galectin-13 mRNA levels in asthmatic subjects were strongly correlated with eosinophilic airway inflammation (the percentage of sputum eosinophils, the number of eosinophils in bronchial submucosa and FeNO) and the expression of Th2 signature genes (CLCA1, POSTN and SERPINB2). Inhaled corticosteroid (ICS) treatment reduced plasma galectin-13 levels, and baseline plasma galectin-13 levels reflect the response to ICS treatment. In cultured 16HBE cells, knockdown of galectin-13 suppressed IL-13-stimulated MCP-1 and eotaxin-1 expression by inhibiting the activation of EGFR and ERK. CONCLUSIONS & CLINICAL RELEVANCE Galectin-13 is a novel marker for airway eosinophilia in asthma, and may contribute to allergic airway eosinophilic inflammation by up-regulating the expression of MCP-1 and eotaxin-1. Plasma galectin-13 levels may be useful for predicting responses to ICS treatment.
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Affiliation(s)
- Lingling Yi
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Shuchen Zhang
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuchen Feng
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Wenliang Wu
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Chenli Chang
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Dian Chen
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Shengchong Chen
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Jianping Zhao
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
| | - Guohua Zhen
- Division of Respiratory and Critical Care Medicine, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory of Respiratory Diseases, National Health Commission of People's Republic of China, Wuhan, China
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7
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Galectin-1 inhibits PDGF-BB-induced proliferation and migration of airway smooth muscle cells through the inactivation of PI3K/Akt signaling pathway. Biosci Rep 2021; 40:225155. [PMID: 32495835 PMCID: PMC7295633 DOI: 10.1042/bsr20193899] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 06/02/2020] [Accepted: 06/03/2020] [Indexed: 02/05/2023] Open
Abstract
Childhood asthma is one of the most common chronic childhood diseases. Platelet-derived growth factor BB (PDGF-BB) induced airway smooth muscle cell (ASMC) proliferation and migration are involved in the pathogenesis of asthma. Galectin-1 (Gal-1) is a glycan-binding protein that has been found to be involved in the progression of asthma. However, the mechanism remains unclear. In the current study, we aimed to evaluate the role of Gal-1 in regulating the phenotype switching of ASMCs, which is an important mechanism in the pathogenesis of asthma. Our results showed that Gal-1 was markedly down-regulated in the samples from asthma patients. In vitro study also proved that Gal-1 expression was decreased in PDGF-BB-stimulated ASMCs. In addition, Gal-1 overexpression significantly inhibited PDGF-BB-induced ASMCs proliferation and migration, while Gal-1 knockdown exhibits opposite effects of Gal-1 overexpression. The PDGF-BB-caused reductions in expressions of α-smooth muscle actin (α-SMA), specific muscle myosin heavy chain (SM-MHC), and calponin were elevated by Gal-1 overexpression, but were deteriorated by Gal-1 knockdown in ASMCs. Furthermore, overexpression of Gal-1 inhibited PDGF-BB-stimulated PI3K/Akt activation in ASMCs. Notably, treatment with IGF-1, an activator of PI3K, reversed the effects of Gal-1 on ASMCs proliferation, migration, and phenotype switching. In conclusion, these findings showed that Gal-1 exerted inhibitory effects on PDGF-BB-stimulated proliferation, migration, and phenotype switching of ASMCs via inhibiting the PI3K/Akt signaling pathway. Thus, Gal-1 might be a promising target for the treatment of asthma.
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8
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Mai E, Limkar AR, Percopo CM, Rosenberg HF. Generation of Mouse Eosinophils in Tissue Culture from Unselected Bone Marrow Progenitors. Methods Mol Biol 2021; 2241:37-47. [PMID: 33486726 DOI: 10.1007/978-1-0716-1095-4_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Human eosinophilic leukocytes are found in peripheral blood and tissues at homeostasis and at elevated levels in atopic disorders. As inbred strains of mice (Mus musculus) are currently the models of choice for the study of disease mechanisms in vivo, a full understanding of mouse eosinophils is critical for interpretation of experimental findings. Toward this end, several years ago we presented a protocol for generating mouse eosinophils in tissue culture from unselected bone marrow progenitors (Dyer et al., J Immunol 181: 4004-4009, 2008). This method has been implemented widely and has proven to be effective for generating phenotypically normal eosinophils from numerous mouse strains and genotypes. Here we provide a detailed version of this protocol, along with suggestions and notes for its careful execution. We have also included several protocol variations and suggestions for improvements.
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Affiliation(s)
- Eric Mai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Ajinkya R Limkar
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Caroline M Percopo
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Helene F Rosenberg
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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9
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Galectins in allergic inflammatory diseases. Mol Aspects Med 2020; 79:100925. [PMID: 33203547 DOI: 10.1016/j.mam.2020.100925] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/31/2020] [Accepted: 11/02/2020] [Indexed: 12/23/2022]
Abstract
Allergic inflammatory diseases are a global public health concern affecting millions of people. Although there are several potential hypotheses, details regarding their molecular mechanisms are still ambiguous. Recently, a group of β-galactoside-binding proteins, galectins, have been revealed as important factors in altering allergic chronic inflammatory diseases. In this review, we describe the molecular and cellular basis of how galectins modulate inflammatory reactions. We also provide an overview of clinical features related to galectins. Finally, we discuss the potential issues that might lead to misrepresentation of the exact biological functions of galectins.
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10
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Doulberis M, Kountouras J, Rogler G. Reconsidering the "protective" hypothesis of Helicobacter pylori infection in eosinophilic esophagitis. Ann N Y Acad Sci 2020; 1481:59-71. [PMID: 32770542 DOI: 10.1111/nyas.14449] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/12/2020] [Accepted: 07/01/2020] [Indexed: 02/06/2023]
Abstract
Since its discovery, Helicobacter pylori (H. pylori) has attracted attention in the biomedical world with its numerous pathophysiologic implications, both gastrointestinal and systemic. Beyond its well-established carcinogenic properties, emerging evidence also supports "harmful" proinflammatory and neurodegenerative roles of H. pylori. On the other hand, H. pylori infection has been proposed to be "protective" against several diseases, such as asthma and gastroesophageal reflux disease. Eosinophilic esophagitis (EoE) is a relatively new, allergen/immune-mediated disease, which has also been linked to these considerations. Main arguments are a postulated shift of immune responses by H. pylori from T helper 2 (TH 2) to TH 1 polarization, as well as a potential decline of the H. pylori burden with the dramatic parallel rise of ΕοΕ: a series of observational studies reported an inverse association. In this review, we counter these arguments by providing further epidemiological data, which point out that this generalization might be rather incomplete. We also discuss the limitations of the existing studies evaluating a possible association. Furthermore, we provide current evidence on common pathogenetic components, which share both entities. In summary, the claim that H. pylori is protective against EoE is rather incomplete, and further mechanistic studies are necessary to elucidate a possible association.
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Affiliation(s)
- Michael Doulberis
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland.,Second Medical Clinic, Faculty of Medicine, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Jannis Kountouras
- Second Medical Clinic, Faculty of Medicine, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Gerhard Rogler
- Department of Gastroenterology and Hepatology, University of Zurich, Zurich, Switzerland
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11
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Zheng L, Shi Z, Han Y, Luo Y, Tang Z, Tan G, Wang L. Serum galectin-1, galectin-3, and galectin-9 are bystander molecules for chronic spontaneous urticaria. Allergy 2019; 74:1996-1998. [PMID: 31006131 DOI: 10.1111/all.13835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lin Zheng
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Zhen‐Rui Shi
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Yan‐Fang Han
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Yi‐Jin Luo
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Zeng‐Qi Tang
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Guo‐Zhen Tan
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
| | - Liangchun Wang
- Department of Dermatology Sun Yat‐sen Memorial Hospital Sun Yat‐sen University Guangzhou China
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12
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Ueki S, Miyabe Y, Yamamoto Y, Fukuchi M, Hirokawa M, Spencer LA, Weller PF. Charcot-Leyden Crystals in Eosinophilic Inflammation: Active Cytolysis Leads to Crystal Formation. Curr Allergy Asthma Rep 2019; 19:35. [PMID: 31203469 PMCID: PMC6952074 DOI: 10.1007/s11882-019-0868-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE OF REVIEW Charcot-Leyden crystals (CLCs), slender bipyramidal hexagonal crystals, were first described by Jean-Martin Charcot in 1853, predating Paul Ehrlich's "discovery" of eosinophils by 26 years. To date, CLCs are known as a classical hallmark of eosinophilic inflammation. CLC protein expresses palmitate cleaving lysophospholipase activity and is a member of the family of S-type lectins, galectin-10. We summarize current knowledge regarding the pathological observations of CLCs and their mechanism of generation focusing on eosinophil cell death. RECENT FINDINGS The presence of CLCs in vivo has been consistently associated with lytic eosinophils. Recent evidence revealed that cytolysis represents the occurrence of extracellular trap cell death (ETosis), an active non-apoptotic cell death process releasing filamentous chromatin structure. Galectin-10 is a predominant protein present within the cytoplasm of eosinophils but not stored in secretory granules. Activated eosinophils undergo ETosis and loss of galectin-10 cytoplasmic localization results in intracellular CLC formation. Free galectin-10 released following plasma membrane disintegration forms extracellular CLCs. Of interest, galectin-10-containing extracellular vesicles are also released during ETosis. Mice models indicated that CLCs could be a novel therapeutic target for Th2-type airway inflammation. The concept of ETosis, which represents a major fate of activated eosinophils, expands our current understanding by which cytoplasmic galectin-10 is crystalized/externalized. Besides CLCs and free galectin-10, cell-free granules, extracellular chromatin traps, extracellular vesicles, and other alarmins, all released through the process of ETosis, have novel implications in various eosinophilic disorders.
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Affiliation(s)
- Shigeharu Ueki
- Department of General Internal Medicine and Clinical Laboratory Medicine, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita, 010-8543, Japan.
| | - Yui Miyabe
- Department of General Internal Medicine and Clinical Laboratory Medicine, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita 010-8543, Japan,Department of Otorhinolaryngology, Head & Neck Surgery, Akita University Hospital, Akita, Japan
| | - Yohei Yamamoto
- Department of Molecular Pathology and Tumor Pathology, Akita University Graduate School of Medicine, Akita, Japan
| | - Mineyo Fukuchi
- Department of General Internal Medicine and Clinical Laboratory Medicine, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita 010-8543, Japan
| | - Makoto Hirokawa
- Department of General Internal Medicine and Clinical Laboratory Medicine, Akita University Graduate School of Medicine, 1-1-1, Hondo, Akita 010-8543, Japan
| | - Lisa A. Spencer
- Department of Pediatrics, University of Colorado School of Medicine, Denver, CO, USA
| | - Peter F. Weller
- Divisions of Allergy and Inflammation and Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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13
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Tsutsumiuchi T, Hoshino H, Fujieda S, Kobayashi M. Induction of peripheral lymph node addressin in human nasal mucosa with eosinophilic chronic rhinosinusitis. Pathology 2019; 51:268-273. [PMID: 30837082 DOI: 10.1016/j.pathol.2019.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/23/2018] [Accepted: 01/05/2019] [Indexed: 01/28/2023]
Abstract
Eosinophilic chronic rhinosinusitis (ECRS) is characterised by formation of nasal polyps with prominent eosinophilic infiltration; however, how eosinophils are recruited in this pathological setting remains unclear. In the present study, we carried out quantitative immunohistochemical analysis of nasal polyps associated with ECRS (n=30) and non-ECRS (n=30) to evaluate expression of an L-selectin ligand peripheral lymph node addressin (PNAd) on vascular endothelial cells. We found that PNAd was induced primarily on the luminal surface of venular vessels present in nasal mucosa in both ECRS and non-ECRS, while the number of PNAd-expressing vessels in ECRS significantly exceeded that seen in non-ECRS. Moreover, the number of eosinophils attached to the luminal surface of PNAd-expressing vessels in ECRS was significantly greater than that in non-ECRS, while the number of neutrophils and lymphocytes attached did not differ significantly between conditions. Furthermore, eosinophils, which express cell surface L-selectin, adhered to PNAd-expressing Chinese hamster ovary (CHO) cells in a calcium-dependent manner, and that adhesion was significantly inhibited by pretreatment of eosinophils with DREG-56, an anti-human L-selectin monoclonal antibody. These findings combined suggest that interaction between L-selectin and PNAd plays at least a partial role in eosinophil recruitment in human nasal mucosa with ECRS.
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Affiliation(s)
- Toshiki Tsutsumiuchi
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan; Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan
| | - Hitomi Hoshino
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan
| | - Shigeharu Fujieda
- Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan
| | - Motohiro Kobayashi
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan.
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14
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Zhang LL, Hu XH, Wu SQ, Batool K, Chowdhury M, Lin Y, Zhang J, Gill SS, Guan X, Yu XQ. Aedes aegypti Galectin Competes with Cry11Aa for Binding to ALP1 To Modulate Cry Toxicity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:13435-13443. [PMID: 30556692 DOI: 10.1021/acs.jafc.8b04665] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The key step for the toxicity of Bacillus thuringiensis subsp. israelensis (Bti) is the interaction between toxins and putative receptors; thus, many studies focus on identification of new toxin receptors and engineering of toxins with higher affinity/specificity for receptors. In the larvae of Aedes aegypti, galectin-14 was one of the genes upregulated by Bti treatment. RNAi knockdown expression of galectin-14 and feeding recombinant galectin-14-thioredoxin fusion protein significantly affected survival of Ae. aegypti larvae treated with Bti toxins. Recombinant galectin-14 protein bound to brush border membrane vesicles (BBMVs) of Ae. aegypti larvae, ALP1 and APN2, and galectin-14 and Cry11Aa bound to BBMVs with a similarly high affinity. Competitive binding results showed that galectin-14 competed with Cry11Aa for binding to BBMVs and ALP1 to prevent effective binding of toxin to receptors. These novel findings demonstrated that midgut proteins other than receptors play an important role in modulating the toxicity of Cry toxins.
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Affiliation(s)
- Ling-Ling Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and School of Life Science , Fujian Agriculture and Forestry University , Fuzhou 350002 , China
- Division of Cell Biology and Biophysics , University of Missouri - Kansas City , Kansas City , Missouri 64110 , United States
| | - Xiao-Hua Hu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and School of Life Science , Fujian Agriculture and Forestry University , Fuzhou 350002 , China
| | - Song-Qing Wu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and School of Life Science , Fujian Agriculture and Forestry University , Fuzhou 350002 , China
| | - Khadija Batool
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and School of Life Science , Fujian Agriculture and Forestry University , Fuzhou 350002 , China
| | - Munmun Chowdhury
- Division of Cell Biology and Biophysics , University of Missouri - Kansas City , Kansas City , Missouri 64110 , United States
| | - Yi Lin
- Department of Bioengineering & Biotechnology, College of Chemical Engineering , Huaqiao University , Xiamen 361021 , China
| | - Jie Zhang
- Division of Cell Biology and Biophysics , University of Missouri - Kansas City , Kansas City , Missouri 64110 , United States
| | - Sarjeet S Gill
- Department of Molecular, Cell and Systems Biology , University of California , Riverside , California 92521 , United States
| | - Xiong Guan
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops and School of Life Science , Fujian Agriculture and Forestry University , Fuzhou 350002 , China
| | - Xiao-Qiang Yu
- Division of Cell Biology and Biophysics , University of Missouri - Kansas City , Kansas City , Missouri 64110 , United States
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, Institute of Insect Science and Technology, and School of Life Sciences , South China Normal University , Guangzhou 510631 , China
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15
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Al-Obaidi N, Mohan S, Liang S, Zhao Z, Nayak BK, Li B, Sriramarao P, Habib SL. Galectin-1 is a new fibrosis protein in type 1 and type 2 diabetes. FASEB J 2018; 33:373-387. [PMID: 29975570 DOI: 10.1096/fj.201800555rr] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Chronic exposure of tubular renal cells to high glucose contributes to tubulointerstitial changes in diabetic nephropathy. In the present study, we identified a new fibrosis gene called galectin-1 (Gal-1), which is highly expressed in tubular cells of kidneys of type 1 and type 2 diabetic mouse models. Gal-1 protein and mRNA expression showed significant increase in kidney cortex of heterozygous Akita+/- and db/db mice compared with wild-type mice. Mouse proximal tubular cells exposed to high glucose showed significant increase in phosphorylation of Akt and Gal-1. We cloned Gal-1 promoter and identified the transcription factor AP4 as binding to the Gal-1 promoter to up-regulate its function. Transfection of cells with plasmid carrying mutations in the binding sites of AP4 to Gal-1 promoter resulted in decreased protein function of Gal-1. In addition, inhibition of Gal-1 by OTX-008 showed significant decrease in p-Akt/AP4 and protein-promoter activity of Gal-1 and fibronectin. Moreover, down-regulation of AP4 by small interfering RNA resulted in a significant decrease in protein expression and promoter activity of Gal-1. We found that kidney of Gal-1-/- mice express very low levels of fibronectin protein. In summary, Gal-1 is highly expressed in kidneys of type 1 and 2 diabetic mice, and AP4 is a major transcription factor that activates Gal-1 under hyperglycemia. Inhibition of Gal-1 by OTX-008 blocks activation of Akt and prevents accumulation of Gal-1, suggesting a novel role of Gal-1 inhibitor as a possible therapeutic target to treat renal fibrosis in diabetes.-Al-Obaidi, N., Mohan, S., Liang, S., Zhao, Z., Nayak, B. K., Li, B., Sriramarao, P., Habib, S. L. Galectin-1 is a new fibrosis protein in type 1 and type 2 diabetes.
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Affiliation(s)
- Noor Al-Obaidi
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, Texas, USA
| | - Sumathy Mohan
- Department of Pathology, University of Texas Health, San Antonio, Texas, USA
| | - Sitai Liang
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, Texas, USA
| | - Zhenze Zhao
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, Texas, USA
| | - Bijaya K Nayak
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, Texas, USA
| | - Boajie Li
- Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, China
| | - P Sriramarao
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, Minnesota, USA; and
| | - Samy L Habib
- Department of Cell Systems and Anatomy, University of Texas Health, San Antonio, Texas, USA.,Geriatric Research Education and Clinical Center, South Texas, Veterans Healthcare System, San Antonio, Texas, USA
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16
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Johansson MW, Kelly EA, Nguyen CL, Jarjour NN, Bochner BS. Characterization of Siglec-8 Expression on Lavage Cells after Segmental Lung Allergen Challenge. Int Arch Allergy Immunol 2018; 177:16-28. [PMID: 29879704 DOI: 10.1159/000488951] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 04/03/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Siglec-8 is present at a high level on human blood eosinophils and low level on blood basophils. Engagement of Siglec-8 on blood eosinophils causes its internalization and results in death. Siglec-8 is a potential therapeutic target in eosinophilic asthma. OBJECTIVES The aim of this study was to determine Siglec-8 levels on eosinophils and basophils recruited during lung inflammation. METHOD We analyzed surface Siglec-8 by flow cytometry on cells obtained by bronchoalveolar lavage (BAL) 48 h after segmental lung allergen challenge of human subjects with mild allergic asthma and used confocal microscopy to compare Siglec-8 distribution on BAL and blood eosinophils. RESULTS Like their blood counterparts, BAL eosinophils had high unimodal surface Siglec-8, while BAL basophils had lower but detectable surface Siglec-8. BAL macrophages, monocytes, neutrophils, and plasmacytoid dendritic cells did not express surface Siglec-8. Microscopy of freshly isolated blood eosinophils demonstrated homogeneous Siglec-8 distribution over the cell surface. Upon incubation with IL-5, Siglec-8 on the surface of eosinophils became localized in patches both at the nucleopod tip and at the opposite cell pole. BAL eosinophils also had a patchy Siglec-8 distribution. CONCLUSIONS We conclude that 48 h after segmental allergen challenge, overall levels of Siglec-8 expression on airway eosinophils resemble those on blood eosinophils, but with a patchier distribution, a pattern consistent with activation. Thus, therapeutic targeting of Siglec-8 has the potential to impact blood as well as lung eosinophils, which may be associated with an improved outcome in eosinophilic lung diseases.
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Affiliation(s)
- Mats W Johansson
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Elizabeth A Kelly
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Christopher L Nguyen
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Nizar N Jarjour
- Department of Medicine, Division of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Bruce S Bochner
- Department of Medicine, Division of Allergy and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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17
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Fei D, Wei D, Yu X, Yue J, Li M, Sun L, Jiang L, Li Y, Diao Q, Ma M. Screening of binding proteins that interact with Chinese sacbrood virus VP3 capsid protein in Apis cerana larvae cDNA library by the yeast two-hybrid method. Virus Res 2018; 248:24-30. [PMID: 29452163 DOI: 10.1016/j.virusres.2018.02.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 02/09/2018] [Accepted: 02/09/2018] [Indexed: 10/18/2022]
Abstract
Chinese sacbrood virus (CSBV) causes larval death and apiary collapse of Apis cerana. VP3 is a capsid protein of CSBV but its function is poorly understood. To determine the function of VP3 and screen for novel binding proteins that interact with VP3, we conducted yeast two-hybrid screening, glutathione S-transferase pull-down, and co-immunoprecipitation assays. Galectin (GAL) is a protein involved in immune regulation and host-pathogen interactions. The yeast two-hybrid screen implicated GAL as a major VP3-binding candidate. The assays showed that the VP3 interacted with GAL. Identification of these cellular targets and clarifying their contributions to the host-pathogen interaction may be useful for the development of novel therapeutic and prevention strategies against CSBV infection.
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Affiliation(s)
- Dongliang Fei
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China; College of Veterinary Medicine, Northeast Agricultural University, No. 59, Xiangfang the public Hamaji timber Street, Harbin, Heilongjiang Province, 150030, China
| | - Dong Wei
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Xiaolei Yu
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Jinjin Yue
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Ming Li
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Li Sun
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Lili Jiang
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, No. 59, Xiangfang the public Hamaji timber Street, Harbin, Heilongjiang Province, 150030, China
| | - Qingyun Diao
- Honeybee Research Institute, Chinese Academy of Agricultural Sciences, Xiangshan, Beijing 100093, China
| | - Mingxiao Ma
- Institute of Life Sciences, Jinzhou Medical University, No. 40, Section 3 Songpo Road, Jinzhou, Liaoning Province, 121001, China.
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