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Lin WT, Wu HH, Lee CW, Chen YF, Huang L, Hui-Chun Ho J, Kuang-Sheng Lee O. Modulation of experimental acute lung injury by exosomal miR-7704 from mesenchymal stromal cells acts through M2 macrophage polarization. MOLECULAR THERAPY. NUCLEIC ACIDS 2024; 35:102102. [PMID: 38222299 PMCID: PMC10787251 DOI: 10.1016/j.omtn.2023.102102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/11/2023] [Indexed: 01/16/2024]
Abstract
Acute lung injury (ALI) is a life-threatening condition with limited treatment options. The pathogenesis of ALI involves macrophage-mediated disruption and subsequent repair of the alveolar barriers, which ultimately results in lung damage and regeneration, highlighting the pivotal role of macrophage polarization in ALI. Although exosomes derived from mesenchymal stromal cells have been established as influential modulators of macrophage polarization, the specific role of exosomal microRNAs (miRNAs) remains underexplored. This study aimed to elucidate the role of specific exosomal miRNAs in driving macrophage polarization, thereby providing a reference for developing novel therapeutic interventions for ALI. We found that miR-7704 is the most abundant and efficacious miRNA for promoting the switch to the M2 phenotype in macrophages. Mechanistically, we determined that miR-7704 stimulates M2 polarization by inhibiting the MyD88/STAT1 signaling pathway. Notably, intra-tracheal delivery of miR-7704 alone in a lipopolysaccharide-induced murine ALI model significantly drove M2 polarization in lung macrophages and remarkably restored pulmonary function, thus increasing survival. Our findings highlight miR-7704 as a valuable tool for treating ALI by driving the beneficial M2 polarization of macrophages. Our findings pave the way for deeper exploration into the therapeutic potential of exosomal miRNAs in inflammatory lung diseases.
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Affiliation(s)
- Wei-Ting Lin
- Doctoral Degree Program of Translational Medicine, National Yang Ming Chiao Tung University and Academia Sinica, Taipei, Taiwan, R.O.C
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
| | - Hao-Hsiang Wu
- Center for Translational Genomics & Regenerative Medicine Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
| | - Chien-Wei Lee
- Center for Translational Genomics & Regenerative Medicine Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan, R.O.C
| | - Yu-Fan Chen
- Center for Translational Genomics & Regenerative Medicine Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan, R.O.C
| | | | - Jennifer Hui-Chun Ho
- Center for Translational Genomics & Regenerative Medicine Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
- Department of Medical Research, Eye Center, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
- Department of Ophthalmology, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Oscar Kuang-Sheng Lee
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
- Center for Translational Genomics & Regenerative Medicine Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
- Department of Biomedical Engineering, China Medical University, Taichung, Taiwan, R.O.C
- Stem Cell Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
- Department of Orthopedics, China Medical University Hospital, Taichung, Taiwan, R.O.C
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Huang AYS, Woo J, Sardar D, Lozzi B, Bosquez Huerta NA, Lin CCJ, Felice D, Jain A, Paulucci-Holthauzen A, Deneen B. Region-Specific Transcriptional Control of Astrocyte Function Oversees Local Circuit Activities. Neuron 2020; 106:992-1008.e9. [PMID: 32320644 PMCID: PMC7879989 DOI: 10.1016/j.neuron.2020.03.025] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 02/24/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023]
Abstract
Astrocytes play essential roles in brain function by supporting synaptic connectivity and associated circuits. How these roles are regulated by transcription factors is unknown. Moreover, there is emerging evidence that astrocytes exhibit regional heterogeneity, and the mechanisms controlling this diversity remain nascent. Here, we show that conditional deletion of the transcription factor nuclear factor I-A (NFIA) in astrocytes in the adult brain results in region-specific alterations in morphology and physiology that are mediated by selective DNA binding. Disruptions in astrocyte function following loss of NFIA are most pronounced in the hippocampus, manifested by impaired interactions with neurons, coupled with diminution of learning and memory behaviors. These changes in hippocampal astrocytes did not affect basal neuronal properties but specifically inhibited synaptic plasticity, which is regulated by NFIA in astrocytes through calcium-dependent mechanisms. Together, our studies reveal region-specific transcriptional dependencies for astrocytes and identify astrocytic NFIA as a key transcriptional regulator of hippocampal circuits.
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Affiliation(s)
- Anna Yu-Szu Huang
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA; Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Junsung Woo
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA
| | - Debosmita Sardar
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA
| | - Brittney Lozzi
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA
| | - Navish A Bosquez Huerta
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA; Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chia-Ching John Lin
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA
| | - Daniela Felice
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - Antrix Jain
- Mass Spectrometry Proteomics Core, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Benjamin Deneen
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA; Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA; Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA.
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Li W, Liang R, Huang H, Wu B, Zhong Y. Effects of IFN-γ on cell growth and the expression of ADAM33 gene in human embryonic lung Mrc-5 fibroblasts in vitro. J Asthma 2017; 55:15-25. [PMID: 28346792 DOI: 10.1080/02770903.2017.1310226] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To investigate the effects of interferon-γ (IFN-γ) on the proliferation and viability of human embryonic lung Mrc-5 fibroblasts in vitro and the expression of the A Disintegrin and Metalloprotease 33 (ADAM33) gene and to explore the mechanism of airway remodeling. METHODS Mrc-5 fibroblasts were sensitized with Dermatophagoides farinae 1 (Derf1) in vitro to mimic in vivo conditions observed in bronchial asthma. An inverted fluorescence microscope was used to observe changes in cell morphology before and after treatment. The viability of Mrc-5 cells was tested using the Cell Counting kit-8 (CCK8). Expression of the ADAM33 gene and protein in Mrc-5 cells was assessed using qPCR and Western blotting, respectively. RESULTS Different concentrations of Derf1 increased cell growth and the expression of the ADAM33 gene in Mrc-5 cells, and these changes were most obvious in the 10 µg/ml group. In contrast, IFN-γ decreased cell growth and the expression of the ADAM33 gene in both Mrc-5 cells and Derf1-induced Mrc-5 cells, and these changes were most obvious in the 10 ng/ml group. The negative effects of 10 ng/ml IFN-γ were the most significant at 32 hours. CONCLUSIONS Derf1-induced Mrc-5 cells successfully imitated the in vivo conditions observed in patients with asthma. IFN-γ inhibited the proliferation and viability of Mrc-5 cells, and Derf1-induced Mrc-5 cells were more sensitive to IFN-γ treatment. IFN-γ treatment significantly downregulated the expression of the ADAM33 gene in a concentration- and time-dependent manner. IFN-γ may participate in airway remodeling in asthma by regulating the expression of the ADAM33 gene.
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Affiliation(s)
- Wenjing Li
- a Department of Pediatrics, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong , China.,b Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangzhou Higher Education Institutes of Sun Yat-sen University , Guangzhou , Guangdong , China
| | - Rongrong Liang
- a Department of Pediatrics, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong , China.,b Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangzhou Higher Education Institutes of Sun Yat-sen University , Guangzhou , Guangdong , China
| | - Huarong Huang
- a Department of Pediatrics, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong , China.,b Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangzhou Higher Education Institutes of Sun Yat-sen University , Guangzhou , Guangdong , China
| | - Baojing Wu
- a Department of Pediatrics, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong , China.,b Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangzhou Higher Education Institutes of Sun Yat-sen University , Guangzhou , Guangdong , China
| | - Yingqiang Zhong
- b Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangzhou Higher Education Institutes of Sun Yat-sen University , Guangzhou , Guangdong , China.,c Department of Gastroenterology, Sun Yat-sen Memorial Hospital , Sun Yat-sen University , Guangzhou , Guangdong , China
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Lesovaya E, Yemelyanov A, Swart AC, Swart P, Haegeman G, Budunova I. Discovery of Compound A--a selective activator of the glucocorticoid receptor with anti-inflammatory and anti-cancer activity. Oncotarget 2016; 6:30730-44. [PMID: 26436695 PMCID: PMC4741564 DOI: 10.18632/oncotarget.5078] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 09/19/2015] [Indexed: 12/19/2022] Open
Abstract
Glucocorticoids are among the most effective anti-inflammatory drugs, and are widely used for cancer therapy. Unfortunately, chronic treatment with glucocorticoids results in multiple side effects. Thus, there was an intensive search for selective glucocorticoid receptor (GR) activators (SEGRA), which retain therapeutic potential of glucocorticoids, but with fewer adverse effects. GR regulates gene expression by transactivation (TA), by binding as homodimer to gene promoters, or transrepression (TR), via diverse mechanisms including negative interaction between monomeric GR and other transcription factors. It is well accepted that metabolic and atrophogenic effects of glucocorticoids are mediated by GR TA. Here we summarized the results of extensive international collaboration that led to discovery and characterization of Compound A (CpdA), a unique SEGRA with a proven “dissociating” GR ligand profile, preventing GR dimerization and shifting GR activity towards TR both in vitro and in vivo. We outlined here the unusual story of compound's discovery, and presented a comprehensive overview of CpdA ligand properties, its anti-inflammatory effects in numerous animal models of inflammation and autoimmune diseases, as well as its anti-cancer effects. Finally, we presented mechanistic analysis of CpdA and glucocorticoid effects in skin, muscle, bone, and regulation of glucose and fat metabolism to explain decreased CpdA side effects compared to glucocorticoids. Overall, the results obtained by our and other laboratories underline translational potential of CpdA and its derivatives for treatment of inflammation, autoimmune diseases and cancer.
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Affiliation(s)
- Ekaterina Lesovaya
- Department of Chemical Carcinogenesis, N.N. Blokhin Russian Cancer Research Center, Moscow, Russia
| | - Alexander Yemelyanov
- Pulmonary Division, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Amanda C Swart
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Pieter Swart
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | | | - Irina Budunova
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Ali-Sisto T, Tolmunen T, Toffol E, Viinamäki H, Mäntyselkä P, Valkonen-Korhonen M, Honkalampi K, Ruusunen A, Velagapudi V, Lehto SM. Purine metabolism is dysregulated in patients with major depressive disorder. Psychoneuroendocrinology 2016; 70:25-32. [PMID: 27153521 DOI: 10.1016/j.psyneuen.2016.04.017] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 04/19/2016] [Accepted: 04/22/2016] [Indexed: 12/20/2022]
Abstract
INTRODUCTION The purine cycle and altered purinergic signaling have been suggested to play a role in major depressive disorder (MDD). Nevertheless, data on this topic are scarce. Based on previous studies, we hypothesized that compared with non-depressed controls, MDD patients have distinct purine metabolite profiles. METHODS The samples comprised 99 MDD patients and 253 non-depressed controls, aged 20-71 years. Background data were collected with questionnaires. Fasting serum samples were analyzed using ultra-performance liquid chromatography coupled to mass spectrometry (UPLC-MS) to determine seven purine cycle metabolites belonging to the purine cycle. We investigated the levels of these metabolites in three settings: (1) MDD patients vs. non-depressed controls and (2) remitted vs. non-remitted MDD patients, and also (3) within-group changes in metabolite levels during the follow-up period. RESULTS In logistic regression adjusted for age, gender, smoking, alcohol use, physical exercise, glycosylated hemoglobin, and high-density lipoprotein cholesterol, lower levels of inosine (OR 0.89, 95% CI 0.82-0.97) and guanosine (OR 0.32, 95% CI 0.17-0.59), and higher levels of xanthine (OR 2.21, 95% CI 1.30-3.75) were associated with MDD vs. the non-depressed group. Levels of several metabolites changed significantly during the follow-up period in the MDD group, but there were no differences between remitted and non-remitted groups. CONCLUSIONS We observed altered purine metabolism in MDD patients compared with non-depressed controls. Furthermore, our observations suggest that circulating xanthine may accumulate in MDD patients.
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Affiliation(s)
- Toni Ali-Sisto
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland.
| | - Tommi Tolmunen
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland; Department of Psychiatry, Kuopio University Hospital, P.O. Box 100, 70029 KYS, Finland
| | - Elena Toffol
- Metabolomics Unit, Institute for Molecular Medicine, Finland
| | - Heimo Viinamäki
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland; Department of Psychiatry, Kuopio University Hospital, P.O. Box 100, 70029 KYS, Finland
| | - Pekka Mäntyselkä
- Primary Health Care Unit, University of Eastern Finland and Kuopio University Hospital, P.O. Box 1627, 70211, Kuopio, Finland
| | - Minna Valkonen-Korhonen
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland; Department of Psychiatry, Kuopio University Hospital, P.O. Box 100, 70029 KYS, Finland
| | - Kirsi Honkalampi
- Department of Education and Psychology, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
| | - Anu Ruusunen
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland; Department of Psychiatry, Kuopio University Hospital, P.O. Box 100, 70029 KYS, Finland
| | - Vidya Velagapudi
- Metabolomics Unit, Institute for Molecular Medicine, Finland; FIMM, P.O. Box 20, FI-00014, University of Helsinki, Finland
| | - Soili M Lehto
- Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland; Department of Psychiatry, Kuopio University Hospital, P.O. Box 100, 70029 KYS, Finland
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Karisola P, Lehto M, Kinaret P, Ahonen N, Haapakoski R, Anthoni M, Taniguchi M, Wolff H, Puustinen A, Alenius H. Invariant Natural Killer T Cells Play a Role in Chemotaxis, Complement Activation and Mucus Production in a Mouse Model of Airway Hyperreactivity and Inflammation. PLoS One 2015; 10:e0129446. [PMID: 26067998 PMCID: PMC4466557 DOI: 10.1371/journal.pone.0129446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 05/08/2015] [Indexed: 12/31/2022] Open
Abstract
CD1d-restricted invariant natural killer T (iNKT) cells play a critical role in the induction of airway hyperreactivity (AHR). After intranasal alpha-galactosylceramide (α-GalCer) administration, bronchoalveolar lavage fluid (BALF) proteins from mouse lung were resolved by two-dimensional differential gel electrophoresis (2D-DIGE), and identified by tandem mass spectroscopy. A lack of iNKT cells prevented the development of airway responses including AHR, neutrophilia and the production of the proinflammatory cytokines in lungs. Differentially abundant proteins in the BALF proteome of α-GalCer-treated wild type mice included lungkine (CXCL15), pulmonary surfactant-associated protein D (SFTPD), calcium-activated chloride channel regulator 1 (CLCA1), fragments of complement 3, chitinase 3-like proteins 1 (CH3LI) and 3 (CH3L3) and neutrophil gelatinase-associated lipocalin (NGAL). These proteins may contribute to iNKT regulated AHR via several mechanisms: altering leukocyte chemotaxis, increasing airway mucus production and possibly via complement activation.
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Affiliation(s)
- Piia Karisola
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
- * E-mail:
| | - Maili Lehto
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Pia Kinaret
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Niina Ahonen
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Rita Haapakoski
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Minna Anthoni
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Masaru Taniguchi
- RIKEN Center for Integrative Medical Sciences, Laboratory for Immune Regulation, RCAI Kanagawa, Japan
| | - Henrik Wolff
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Anne Puustinen
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Harri Alenius
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
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Fyhrquist N, Ruokolainen L, Suomalainen A, Lehtimäki S, Veckman V, Vendelin J, Karisola P, Lehto M, Savinko T, Jarva H, Kosunen TU, Corander J, Auvinen P, Paulin L, von Hertzen L, Laatikainen T, Mäkelä M, Haahtela T, Greco D, Hanski I, Alenius H. Acinetobacter species in the skin microbiota protect against allergic sensitization and inflammation. J Allergy Clin Immunol 2014; 134:1301-1309.e11. [PMID: 25262465 DOI: 10.1016/j.jaci.2014.07.059] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 07/01/2014] [Accepted: 07/07/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND The human commensal microbiota interacts in a complex manner with the immune system, and the outcome of these interactions might depend on the immune status of the subject. OBJECTIVE Previous studies have suggested a strong allergy-protective effect for Gammaproteobacteria. Here we analyze the skin microbiota, allergic sensitization (atopy), and immune function in a cohort of adolescents, as well as the influence of Acinetobacter species on immune responses in vitro and in vivo. METHODS The skin microbiota of the study subjects was identified by using 16S rRNA sequencing. PBMCs were analyzed for baseline and allergen-stimulated mRNA expression. In in vitro assays human monocyte-derived dendritic cells and primary keratinocytes were incubated with Acinetobacter lwoffii. Finally, in in vivo experiments mice were injected intradermally with A lwoffii during the sensitization phase of the asthma protocol, followed by readout of inflammatory parameters. RESULTS In healthy subjects, but not in atopic ones, the relative abundance of Acinetobacter species was associated with the expression of anti-inflammatory molecules by PBMCs. Moreover, healthy subjects exhibited a robust balance between anti-inflammatory and TH1/TH2 gene expression, which was related to the composition of the skin microbiota. In cell assays and in a mouse model, Acinetobacter species induced strong TH1 and anti-inflammatory responses by immune cells and skin cells and protected against allergic sensitization and lung inflammation through the skin. CONCLUSION These results support the hypothesis that skin commensals play an important role in tuning the balance of TH1, TH2, and anti-inflammatory responses to environmental allergens.
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Affiliation(s)
- Nanna Fyhrquist
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Lasse Ruokolainen
- Department of Biosciences, University of Helsinki, Helsinki, Finland
| | - Alina Suomalainen
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Sari Lehtimäki
- Molecular Immunology Group, Turku Centre for Biotechnology, Turku, Finland
| | - Ville Veckman
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Johanna Vendelin
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Piia Karisola
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Maili Lehto
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Terhi Savinko
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Hanna Jarva
- Haartman Institute, Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, University of Helsinki, and Helsinki University Central Hospital Laboratory (HUSLAB), Helsinki, Finland
| | - Timo U Kosunen
- Haartman Institute, Department of Bacteriology and Immunology and Research Programs Unit, Immunobiology, University of Helsinki, and Helsinki University Central Hospital Laboratory (HUSLAB), Helsinki, Finland
| | - Jukka Corander
- Department of Mathematics and Statistics, University of Helsinki, Helsinki, Finland
| | - Petri Auvinen
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Lars Paulin
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Leena von Hertzen
- Allergy Department, Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Tiina Laatikainen
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Mika Mäkelä
- Allergy Department, Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Tari Haahtela
- Allergy Department, Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Dario Greco
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Ilkka Hanski
- Department of Biosciences, University of Helsinki, Helsinki, Finland
| | - Harri Alenius
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki, Finland.
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Deng Y, Li W, Luo Y, Wang LJ, Xie XH, Luo J, Luo ZX, Zhao XD, Fu Z, Liu EM. Inhibition of IFN-γ promotes anti-asthma effect of Mycobacterium bovis Bacillus Calmette-Guerin neonatal vaccination: a murine asthma model. Vaccine 2014; 32:2070-8. [PMID: 24560675 DOI: 10.1016/j.vaccine.2014.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 02/01/2014] [Accepted: 02/06/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The Mycobacterium bovis Bacillus Calmette-Guerin (BCG) neonatal vaccination inhibits allergy-induced pathologic changes. However, the mechanisms underlying this process are unclear. This study aimed to investigate the role of interferon (IFN)-γ and interleukin (IL)-17 in the protective effects of the BCG neonatal vaccination on allergic pulmonary inflammation and airway hyperresponsiveness (AHR). METHODS Wild type (WT)-neonate and IL-17 knock out (KO) neonate mice were vaccinated with BCG. A murine asthma model was developed by sensitization and then challenging with ovalbumin (OVA). Recombinant IL-17 or recombinant IFN-γ was delivered to the airway to overexpress IL-17 or IFN-γ. An anti-IFN-γ neutralizing antibody was used to block the effects of IFN-γ. RESULTS We found exogenous IL-17 delivered to the airway reversed the anti-asthma effects of the neonatal BCG vaccination. BCG neonatal vaccination further reduced OVA-induced inflammation and AHR in IL-17 KO mice. Inhibition of IFN-γ in BCG neonatal vaccinated OVA-induced asthma model mice led to a further reduction in airway inflammation and AHR. In addition, airway inflammation and AHR were robust following treatment with exogenous IFN-γ. Neutralizing IL-17 was not sufficient to block OVA-induced airway inflammation and AHR. In IL-17 KO mice, airway inflammation and AHR did not occur following treatment with an anti-IFN-γ neutralizing antibody. CONCLUSIONS In an OVA-induced murine asthma model, inhibition of IFN-γ enhanced the anti-asthma effects of BCG neonatal vaccination.
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Affiliation(s)
- Yu Deng
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Wei Li
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Yan Luo
- Department of Neonatology, The Affiliated Hospital of Zunyi Medical College, Zunyi 563003, PR China
| | - Li J Wang
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Medical University, Chongqing 400014, PR China
| | - Xiao H Xie
- Key Laboratory of Pediatrics in Chongqing, Chongqing Medical University, Chongqing 400014, PR China
| | - Jian Luo
- Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing Medical University, Chongqing 400014, PR China
| | - Zheng X Luo
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Xiao D Zhao
- Department of Nephrology and Immunology Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - Zhou Fu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China
| | - En M Liu
- Department of Respiratory Medicine, Children's Hospital, Chongqing Medical University, Chongqing 400014, PR China.
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Hessenberger M, Weiss R, Weinberger EE, Boehler C, Thalhamer J, Scheiblhofer S. Transcutaneous delivery of CpG-adjuvanted allergen via laser-generated micropores. Vaccine 2012; 31:3427-34. [PMID: 23273971 PMCID: PMC3724055 DOI: 10.1016/j.vaccine.2012.09.086] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 08/06/2012] [Accepted: 09/19/2012] [Indexed: 12/30/2022]
Abstract
BACKGROUND Two main shortcomings of classical allergen-specific immunotherapy are long treatment duration and low patient compliance. Utilizing the unique immunological features of the skin by transcutaneous application of antigen opens new approaches not only for painless vaccine delivery, but also for allergen-specific immunotherapy. Under certain conditions, however, barrier disruption of the skin favors T helper 2-biased immune responses, which may lead to new sensitizations. METHODS In a prophylactic approach, an infra-red laser device was employed, producing an array of micropores of user-defined number, density, and depth on dorsal mouse skin. The grass pollen allergen Phl p 5 was administered by patch with or without the T helper 1-promoting CpG oligodeoxynucleotide 1826 as adjuvant, or was subcutaneously injected. Protection from allergic immune responses was tested by sensitization via injection of allergen adjuvanted with alum, followed by intranasal instillation. In a therapeutic setting, pre-sensitized mice were treated either by the standard method using subcutaneous injection or via laser-generated micropores. Sera were analyzed for IgG antibody subclass distribution by ELISA and for IgE antibodies by a basophil mediator release assay. Cytokine profiles from supernatants of re-stimulated lymphocytes and from bronchoalveolar lavage fluids were assessed by flow cytometry using a bead-based assay. The cellular composition of lavage fluids was determined by flow cytometry. RESULTS Application of antigen via micropores induced T helper 2-biased immune responses. Addition of CpG balanced the response and prevented from allergic sensitization, i.e. IgE induction, airway inflammation, and expression of T helper 2 cytokines. Therapeutic efficacy of transcutaneous immunotherapy was equal compared to subcutaneous injection, but was superior with respect to suppression of already established IgE responses. CONCLUSIONS Transcutaneous immunotherapy via laser-generated micropores provides an efficient novel platform for treatment of type I allergic diseases. Furthermore, immunomodulation with T helper 1-promoting adjuvants can prevent the risk for new sensitization.
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Affiliation(s)
- Michael Hessenberger
- Department of Molecular Biology, Division of Allergy & Immunology, University of Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria
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Haapakoski R, Karisola P, Fyhrquist N, Savinko T, Lehtimäki S, Wolff H, Lauerma A, Alenius H. Toll-like receptor activation during cutaneous allergen sensitization blocks development of asthma through IFN-gamma-dependent mechanisms. J Invest Dermatol 2012; 133:964-72. [PMID: 23151845 DOI: 10.1038/jid.2012.356] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Toll-like receptors (TLRs) are pattern-recognition receptors that have a pivotal role as primary sensors of microbial products and as initiators of innate and adaptive immune responses. We investigated the role of TLR2, TLR3, and TLR4 activation during cutaneous allergen sensitization in the modulation of allergic asthma. The results show that dermal exposure to TLR4 ligand lipopolysaccharide (LPS) or TLR2 ligand Pam3Cys suppresses asthmatic responses by reducing airway hyperreactivity, mucus production, Th2-type inflammation in the lungs, and IgE antibodies in serum in a dose-dependent manner. In contrast, TLR3 ligand Poly(I:C) did not protect the mice from asthmatic symptoms but reduced IgE and induced IgG2a in serum. LPS (especially) and Pam3Cys enhanced the activation of dermal dendritic cell (DCs) by increasing the expression of CD80 and CD86 but decreased DC numbers in draining lymph nodes at early time points. Later, these changes in DCs led to an increased number of CD8(+) T cells and enhanced the production of IFN-γ in bronchoalveolar lavage fluid. In conclusion, dermal exposure to LPS during sensitization modulates the asthmatic response by skewing the Th1/Th2 balance toward Th1 by stimulating the production of IFN-γ. These findings support the hygiene hypothesis and pinpoint the importance of dermal microbiome in the development of allergy and asthma.
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Affiliation(s)
- Rita Haapakoski
- Unit of Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
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