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Anaya Y, Rosario Martinez R, Goodman RE, Johnson P, Vajpeyi S, Lu X, Peterson R, Weyers SM, Breen B, Newsham K, Scottoline B, Clark AJ, Malinczak CA. Evaluation of the potential food allergy risks of human lactoferrin expressed in Komagataella phaffii. Front Immunol 2024; 15:1380028. [PMID: 39114650 PMCID: PMC11303282 DOI: 10.3389/fimmu.2024.1380028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 07/03/2024] [Indexed: 08/10/2024] Open
Abstract
Introduction Prior to the introduction of novel food ingredients into the food supply, safety risk assessments are required, and numerous prediction models have been developed and validated to evaluate safety. Methods The allergenic risk potential of Helaina recombinant human lactoferrin (rhLF, Effera™), produced in Komagataella phaffii (K. phaffii) was assessed by literature search, bioinformatics sequence comparisons to known allergens, glycan allergenicity assessment, and a simulated pepsin digestion model. Results The literature search identified no allergenic risk for Helaina rhLF, K. phaffii, or its glycans. Bioinformatics search strategies showed no significant risk for cross-reactivity or allergenicity between rhLF or the 36 residual host proteins and known human allergens. Helaina rhLF was also rapidly digested in simulated gastric fluid and its digestibility profile was comparable to human milk lactoferrin (hmLF), further demonstrating a low allergenic risk and similarity to the hmLF protein. Conclusion Collectively, these results demonstrate a low allergenic risk potential of Helaina rhLF and do not indicate the need for further clinical testing or serum IgE binding to evaluate Helaina rhLF for risk of food allergy prior to introduction into the food supply.
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Affiliation(s)
- Yanisa Anaya
- Nutritional Biology & Safety, Helaina, Inc, New York, NY, United States
| | | | | | - Philip Johnson
- University of Nebraska-Lincoln, Lincoln, NE, United States
| | | | - Xiaoning Lu
- Nutritional Biology & Safety, Helaina, Inc, New York, NY, United States
| | - Ross Peterson
- Regulatory Affairs, Helaina, Inc, New York, NY, United States
| | | | - Bella Breen
- Late Stage R&D, Helaina, Inc, New York, NY, United States
| | - Kahler Newsham
- Late Stage R&D, Helaina, Inc, New York, NY, United States
| | - Brian Scottoline
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States
| | - Anthony J. Clark
- Late Stage R&D, Helaina, Inc, New York, NY, United States
- Regulatory Affairs, Helaina, Inc, New York, NY, United States
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2
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Shbeer AM. Current state of knowledge and challenges for harnessing the power of dendritic cells in cancer immunotherapy. Pathol Res Pract 2024; 253:155025. [PMID: 38147726 DOI: 10.1016/j.prp.2023.155025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/28/2023]
Abstract
DCs have great promise for cancer immunotherapy and are essential for coordinating immune responses. In the battle against cancer, using DCs' ability to stimulate the immune system and focus it on tumor cells has shown to be a viable tactic. This study offers a thorough summary of recent developments as well as potential future paths for DC-based immunotherapy against cancer. This study reviews the many methods used in DC therapy, such as vaccination and active cellular immunotherapy. The effectiveness and safety of DC-based treatments for metastatic castration-resistant prostate cancer and non-small cell lung cancer are highlighted in these investigations. The findings indicate longer survival times and superior results for particular patient groups. We are aware of the difficulties and restrictions of DC-based immunotherapy, though. These include the immunosuppressive tumor microenvironment, the intricacy of DC production, and the heterogeneity within DC populations. More study and development are needed to overcome these challenges to enhance immunological responses, optimize treatment regimens, and increase scalability.
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Affiliation(s)
- Abdullah M Shbeer
- Department of Surgery, Faculty of Medicine, Jazan University, Jazan, Saudi Arabia.
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3
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Tu W, Hu X, Wan R, Xiao X, Shen Y, Srikaram P, Avvaru SN, Yang F, Pi F, Zhou Y, Wan M, Gao P. Effective delivery of miR-511-3p with mannose-decorated exosomes with RNA nanoparticles confers protection against asthma. J Control Release 2024; 365:602-616. [PMID: 37996055 PMCID: PMC10872989 DOI: 10.1016/j.jconrel.2023.11.034] [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: 06/30/2023] [Revised: 11/14/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023]
Abstract
Our previous studies have shown that miR-511-3p treatment has a beneficial effect in alleviating allergic airway inflammation. Here, we sought to explore its therapeutic potential in animal models and gain a deeper understanding of its therapeutic value for asthma. miR-511-3p knockout mice (miR-511-3p-/-) were generated by CRISPR/Cas and showed exacerbated airway hyper-responsiveness and Th2-associated allergic airway inflammation compared with wild-type (WT) mice after exposed to cockroach allergen. RNA nanoparticles with mannose decorated EV-miR-511-3p were also created by loading miR-511-3p mimics into the mannose decorated EVs with engineered RNA nanoparticle PRNA-3WJ (Man-EV-miR-511-3p). Intra-tracheal inhalation of Man-EV-miR-511-3p, which could effectively penetrate the airway mucus barrier and deliver functional miR-511-3p to lung macrophages, successfully reversed the increased airway inflammation observed in miR-511-3p-/- mice. Through microarray analysis, complement C3 (C3) was identified as one of the major targets of miR-511-3p. C3 was increased in LPS-treated macrophages but decreased after miR-511-3p treatment. Consistent with these findings, C3 expression was elevated in the lung macrophages of an asthma mouse model but decreased in mice treated with miR-511-3p. Further experiments, including miRNA-mRNA pulldown and luciferase reporter assays, confirmed that miR-511-3p directly binds to C3 and activates the C3 gene. Thus, miR-511-3p represents a promising therapeutic target for asthma, and RNA nanotechnology reprogrammed EVs are efficient carriers for miRNA delivery for disease treatment.
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Affiliation(s)
- Wei Tu
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA; Department of Respirology & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen 518020, China; The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Xinyue Hu
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA; Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Rongjun Wan
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA; Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Xiaojun Xiao
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Yingchun Shen
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | - Prakhyath Srikaram
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | - Sai Nithin Avvaru
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | - Fuhan Yang
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
| | | | - Yufeng Zhou
- Children's Hospital and Institute of Biomedical Sciences, Fudan University, Key Laboratory of Neonatal Disease, Ministry of Health, Shanghai, China
| | - Mei Wan
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Peisong Gao
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.
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4
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Martínez-Blanco M, Menchén-Martínez D, Cámara C, López-Fandiño R, Berin MC, Lozano-Ojalvo D. Coculture of Human Dendritic and T Cells for the Study of Specific T Cell-Mediated Responses Against Food Allergens. Methods Mol Biol 2024; 2717:175-190. [PMID: 37737984 DOI: 10.1007/978-1-0716-3453-0_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Dendritic cells (DCs) connect innate and adaptive immunity by sampling, capturing, processing, and presenting the allergen to distinct subsets of CD4+ T cells. In food allergy, this process leads to the generation of allergen-specific Th2 responses and the production of type 2 cytokines that ultimately induce the synthesis of IgE by allergen-specific B cells. In this chapter, we have described different protocols for the isolation of circulating DCs as well as the generation of DC-like cells derived from autologous peripheral monocytes and the human monocytic THP-1 cell line. Coculture of isolated/generated DCs with CD4+ T cells obtained from PBMCs of allergic subjects allows the study of antigen-specific T cell immune responses against food allergens. Early responses upon allergen recognition can be determined by the upregulation of activation markers such as CD154 (CD40 ligand) and the detection of type 2 cytokines (IL-4, IL-5, IL-9, and IL-13). Delayed allergen-specific CD4+ T cell responses induce the proliferation of these cells and the accumulation of type 2 cytokines in coculture supernatants that can be quantified by different approaches (ELISA, EllaTM, and multiplex assays). Together, the protocols described in this chapter can be used to investigate the features of food proteins to induce food allergy, the influence of environmental factors to generate Th2-polarization, the function of DCs to generate differential immune responses in allergic versus tolerant individuals, and to assess the immunomodulating properties of potential therapeutic substances.
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Affiliation(s)
- Mónica Martínez-Blanco
- Division of Immunology, Boston Children's Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - David Menchén-Martínez
- Instituto de Investigación en Ciencias de la Alimentación (CIAL, CSIC-UAM), Madrid, Spain
| | - Carmen Cámara
- Department of Immunology, Hospital La Paz, Madrid, Spain
| | - Rosina López-Fandiño
- Instituto de Investigación en Ciencias de la Alimentación (CIAL, CSIC-UAM), Madrid, Spain
| | - M Cecilia Berin
- Department of Medicine, Feinberg School of Medicine at Northwestern University, Chicago, IL, USA
| | - Daniel Lozano-Ojalvo
- Instituto de Investigación en Ciencias de la Alimentación (CIAL, CSIC-UAM), Madrid, Spain.
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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5
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Fontenele ALA, de Oliveira Nóbrega CG, do Nascimento WRC, Santos PDA, de Lorena VMB, Peixoto DM, de Azevedo Albuquerque MCP, Solé D, Costa VMA, Sarinho ESC, de Souza VMO. Respiratory allergy symptoms and cytokine profiles in the presence of anti-Ascaris antibody in Giardia lamblia-infected children. Parasitol Res 2023; 122:3147-3158. [PMID: 37875615 DOI: 10.1007/s00436-023-08005-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023]
Abstract
Anti-Ascaris lumbricoides (Asc) IgE and IgG can immunomodulate the allergy; however, the influence of these isotypes has not been investigated in the giardiasis and allergy. Therefore, the frequency of respiratory allergy (RA) symptoms in Giardia lamblia-infected children, with or without anti-Asc IgE, IgG1, or IgG4 and Th1, Th2/Treg, and Th17 cytokine production, was evaluated. We performed a case-control study with children aged 2-10 years old selected by questionnaire and stool exams to form the groups: infected or uninfected with RA (G-RA, n = 55; nG-RA, n = 43); infected and uninfected without RA (G-nRA, n = 59; nG-nRA, n = 54). We performed blood leukocyte counts and in vitro culture. Cytokine levels in the supernatants (CBA), serum total IgE and anti-Asc IgE (ImmunoCAP), IgG1, IgG4, and total IgA (ELISA) were measured. Infection was not associated with allergy. Infected children showed increased levels of anti-Asc IgG1, IL-2, IFN-γ, IL-4, and IL-10. There was a lower frequency of allergy-related symptoms in anti-Asc IgG1-positive children than IgG1-negative (OR = 0.38; CI = 0.17-0.90, p = 0.027) and few eosinophils in G-RA than in G-nRA and more in G-nRA than in nG-nRA, whereas TNF-α levels were higher in the G-RA than in the nG-nRA group. For infected and positive anti-Asc IgG1, there was higher TNF-α and IL-10 production than G/-IgG1. IL-10 levels were lower in nG/ + IgG1 than in infected or non-infected, and both were negative for anti-Asc IgG1. Th1/Th2/IL-10 profiles were stimulated in the infected patients, and in those with circulating anti-Asc IgG1, the TNF-α production was strengthened with a lower risk for respiratory allergy symptoms.
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Affiliation(s)
- Ana Lúcia Arruda Fontenele
- Setor de Imunologia, Laboratório de Imunopatologia Keizo Asami, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | | | | | - Décio Medeiros Peixoto
- Centro de Pesquisa em Alergia e Imunologia Clínica, Hospital das Clínicas, Universidade Federal de Pernambuco, Recife, Brazil
| | | | - Dirceu Solé
- Divisão de Alergia, Imunologia Clínica e Reumatologia, Departamento de Pediatria da, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Valdenia Maria Oliveira de Souza
- Setor de Imunologia, Laboratório de Imunopatologia Keizo Asami, Universidade Federal de Pernambuco, Recife, Brazil.
- Departamento de Ciências Farmacêuticas, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, S/N. Cidade Universitária, 50.670-901, Recife, PE, Brazil.
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6
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Li S, Toriumi H, Takahashi D, Kamasaki T, Fujioka Y, Nagatoishi S, Li J, Liu Y, Hosokawa T, Tsumoto K, Ohba Y, Katayama Y, Murakami D, Hase K, Mori T. Safe and efficient oral allergy immunotherapy using one-pot-prepared mannan-coated allergen nanoparticles. Biomaterials 2023; 303:122381. [PMID: 37935073 DOI: 10.1016/j.biomaterials.2023.122381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/16/2023] [Accepted: 10/27/2023] [Indexed: 11/09/2023]
Abstract
Allergen immunotherapy (AIT) is the only curative treatment for allergic diseases. However, AIT has many disadvantages related to efficiency, safety, long-term duration, and patient compliance. Dendritic cells (DCs) have an important role in antigen-specific tolerance induction; thus, DC-targeting strategies to treat allergies such as glutaraldehyde crosslinked antigen to mannoprotein (MAN) have been established. However, glutaraldehyde crosslinking may reduce the antigen presentation efficiency of DCs. To overcome this, we developed a MAN-coated ovalbumin (OVA) nanoparticle (MDO), which uses intermolecular disulfide bond to crosslink OVA and MAN. MDO effectively targeted DCs resulting in tolerogenic DCs, and promoted higher antigen presentation efficiency by DCs compared with OVA or glutaraldehyde crosslinked nanoparticles. In vitro and in vivo experiments showed that DCs exposed to MDO induced Treg cells. Moreover, MDO had low reactivity with anti-OVA antibodies and did not induce anaphylaxis in allergic mice, demonstrating its high safety profile. In a mouse model of allergic asthma, MDO had significant preventative and therapeutic effects when administered orally or subcutaneously. Therefore, MDO represents a promising new approach for the efficient and safe treatment of allergies.
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Affiliation(s)
- Shunyi Li
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Hiroki Toriumi
- Division of Biochemistry, Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
| | - Daisuke Takahashi
- Division of Biochemistry, Faculty of Pharmacy and Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
| | - Tomoko Kamasaki
- Department of Cell Physiology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Yoichiro Fujioka
- Department of Cell Physiology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Satoru Nagatoishi
- The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan; Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Jinting Li
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yiwei Liu
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Takanatsu Hosokawa
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kouhei Tsumoto
- The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan; Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Yusuke Ohba
- Department of Cell Physiology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, 060-8638, Japan
| | - Yoshiki Katayama
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 819-0395, Japan; Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka, 819-0395, Japan; Center for Future Chemistry, Kyushu University, Fukuoka, 819-0395, Japan; International Research Center for Molecular Systems, Kyushu University, Fukuoka, 819-0395, Japan; Centre for Advanced Medicine Innovation, Kyushu University, Fukuoka, 812-8582, Japan; Department of Biomedical Engineering, Chung Yuan Christian University, Chung Li, 32023, Taiwan.
| | - Daisuke Murakami
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
| | - Koji Hase
- Division of Biochemistry, Faculty of Pharmacy and Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan; The Institute of Fermentation Sciences (IFeS), Faculty of Food and Agricultural Sciences, Fukushima University, Kanayagawa, Fukushima, 960-1296, Japan; International Research and Development Centre for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo (IMSUT), Tokyo, 108-8639, Japan.
| | - Takeshi Mori
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, 819-0395, Japan; Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka, 819-0395, Japan; Center for Future Chemistry, Kyushu University, Fukuoka, 819-0395, Japan.
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7
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Heinzl GC, Eriksen DB, Johnsen PR, Scarafoni A, Frøkiær H. Protein Concentration Affects the Food Allergen γ-Conglutin Uptake and Bacteria-Induced Cytokine Production in Dendritic Cells. Biomolecules 2023; 13:1531. [PMID: 37892213 PMCID: PMC10605286 DOI: 10.3390/biom13101531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
γ-Conglutin (γ-C) from lupin seeds has been identified as a potent allergen with cross reactivity to peanuts. Here, we investigated how γ-C affected the response in bone marrow-derived dendritic cells (DCs) to bacterial stimuli. γ-C enhanced L. acidophilus NCFM (LaNCFM)-induced IL-12, IL-10, and IL-23 dose-dependently. In contrast, together with E. coli Nissle or LPS, γ-C reduced the production of IL-12 but not of IL-23 and IL-10. Enzyme-hydrolyzed γ-C also enhanced LaNCFM-induced IL-12 and IL-23 production. All preparations induced ROS production in the DCs. The mannose receptor ligands mannan and dextran and the clathrin inhibitor monodansylcadaverine partly inhibited the endocytosis of γ-C. Kunitz trypsin inhibitor and the scavenger receptor ligand polyG also enhanced LaNCFM-induced IL-12, indicating the involvement of receptors other than C-type lectin receptors. The endocytosis of labeled γ-C increased dose-dependently by addition of unlabeled γ-C, which coincided with γ-C's tendency to aggregate. Taken together, γ-C aggregation affects endocytosis and affects the cytokine production induced by gram-positive and gram-negative bacteria differently. We suggest that γ-C is taken up by the same mechanism as other food proteins but due to aggregation is present in higher concentration in the DCs. This could influence the resulting T-cell response in a microbial stimuli-dependent way.
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Affiliation(s)
- Giuditta C Heinzl
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy
- Department of Veterinary and Animal Sciences, University of Copenhagen, Ridebanevej 9, 1871 Frederiksberg, Denmark
| | - Danny Blichfeldt Eriksen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Ridebanevej 9, 1871 Frederiksberg, Denmark
| | - Peter Riber Johnsen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Ridebanevej 9, 1871 Frederiksberg, Denmark
| | - Alessio Scarafoni
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy
| | - Hanne Frøkiær
- Department of Veterinary and Animal Sciences, University of Copenhagen, Ridebanevej 9, 1871 Frederiksberg, Denmark
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Khatri K, O'Malley A, Linn C, Kowal K, Chruszcz M. Role of Small Molecule Ligands in IgE-Mediated Allergy. Curr Allergy Asthma Rep 2023; 23:497-508. [PMID: 37351723 DOI: 10.1007/s11882-023-01100-2] [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] [Accepted: 05/16/2023] [Indexed: 06/24/2023]
Abstract
PURPOSE OF REVIEW A significant fraction of allergens bind small molecular ligands, and many of these compounds are classified as lipids. However, in most cases, we do not know the role that is played by the ligands in the allergic sensitization or allergic effector phases. RECENT FINDINGS More effort is dedicated toward identification of allergens' ligands. This resulted in identification of some lipidic compounds that can play active immunomodulatory roles or impact allergens' molecular and allergic properties. Four allergen families (lipocalins, NPC2, nsLTP, and PR-10) are among the best characterized in terms of their ligand-binding properties. Allergens from these four families are able to bind many chemically diverse molecules. These molecules can directly interact with human immune system and/or affect conformation and stability of allergens. While there is more data on the allergens and their small molecular ligands, we are just starting to understand their role in allergy.
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Affiliation(s)
- Kriti Khatri
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA
| | - Andrea O'Malley
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA
| | - Christina Linn
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA
| | - Krzysztof Kowal
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, Bialystok, Poland
| | - Maksymilian Chruszcz
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Rd, East Lansing, MI, 48824, USA.
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9
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Macri C, Jenika D, Ouslinis C, Mintern JD. Targeting dendritic cells to advance cross-presentation and vaccination outcomes. Semin Immunol 2023; 68:101762. [PMID: 37167898 DOI: 10.1016/j.smim.2023.101762] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/06/2023] [Accepted: 04/06/2023] [Indexed: 05/13/2023]
Abstract
Dendritic cells (DCs) are a complex network of specialised antigen-presenting cells that are critical initiators of adaptive immunity. Targeting antigen directly to DCs in situ is a vaccination strategy that selectively delivers antigen to receptors expressed by DC subtypes. This approach exploits specific DC subset functions of antigen uptake and presentation. Here, we review DC-targeted vaccination strategies that are designed to elicit effective cross-presentation for CD8+ T cell immunity. In particular, we focus on approaches that exploit receptors highly expressed by mouse and human cDCs equipped with superior cross-presentation capacity. These receptors include DEC205, Clec9A and XCR1. Targeting DC receptors Clec12A, Clec4A4 and mannose receptor is also reviewed. Outcomes of DC-targeted vaccination in mouse models through to human clinical trials is discussed. This is a promising new vaccination approach capable of directly targeting the cross-presentation pathway for prevention and treatment of tumours and infectious diseases.
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Affiliation(s)
- Christophe Macri
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria 3010, Australia
| | - Devi Jenika
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria 3010, Australia
| | - Cassandra Ouslinis
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria 3010, Australia
| | - Justine D Mintern
- Department of Biochemistry and Pharmacology, The University of Melbourne, Bio21 Molecular Science and Biotechnology Institute, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
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10
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Miller MH, Swaby LG, Vailoces VS, LaFratta M, Zhang Y, Zhu X, Hitchcock DJ, Jewett TJ, Zhang B, Tigno-Aranjuez JT. LMAN1 is a receptor for house dust mite allergens. Cell Rep 2023; 42:112208. [PMID: 36870056 PMCID: PMC10105285 DOI: 10.1016/j.celrep.2023.112208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 12/01/2022] [Accepted: 02/15/2023] [Indexed: 03/05/2023] Open
Abstract
Development of therapies with the potential to change the allergic asthmatic disease course will require the discovery of targets that play a central role during the initiation of an allergic response, such as those involved in the process of allergen recognition. We use a receptor glycocapture technique to screen for house dust mite (HDM) receptors and identify LMAN1 as a candidate. We verify the ability of LMAN1 to directly bind HDM allergens and demonstrate that LMAN1 is expressed on the surface of dendritic cells (DCs) and airway epithelial cells (AECs) in vivo. Overexpression of LMAN1 downregulates NF-κB signaling in response to inflammatory cytokines or HDM. HDM promotes binding of LMAN1 to the FcRγ and recruitment of SHP1. Last, peripheral DCs of asthmatic individuals show a significant reduction in the expression of LMAN1 compared with healthy controls. These findings have potential implications for the development of therapeutic interventions for atopic disease.
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Affiliation(s)
- Madelyn H Miller
- Biotechnology and Immunology Research, Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN 46285, USA
| | - Lindsay G Swaby
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Vanessa S Vailoces
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Maggie LaFratta
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Yuan Zhang
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44195, USA
| | - Xiang Zhu
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Dorilyn J Hitchcock
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Travis J Jewett
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Bin Zhang
- Genomic Medicine Institute, Cleveland Clinic Lerner Research Institute, Cleveland, OH 44195, USA
| | - Justine T Tigno-Aranjuez
- Immunity and Pathogenesis Division, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA.
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11
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C-Type Lectin Receptor Mediated Modulation of T2 Immune Responses to Allergens. Curr Allergy Asthma Rep 2023; 23:141-151. [PMID: 36720753 PMCID: PMC9985561 DOI: 10.1007/s11882-023-01067-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE OF REVIEW Allergic diseases represent a major health problem of increasing prevalence worldwide. In allergy, dendritic cells (DCs) contribute to both the pathophysiology and the induction of healthy immune responses to the allergens. Different studies have reported that some common allergens contain glycans in their structure. C-type lectin receptors (CLRs) expressed by DCs recognize carbohydrate structures and are crucial in allergen uptake, presentation, and polarization of T cell responses. This review summarizes the recent literature regarding the role of CLRs in the regulation of type 2 immune responses to allergens. RECENT FINDINGS In this review, we highlight the capacity of CLRs to recognize carbohydrates in common allergens triggering different signaling pathways involved in the polarization of CD4+ T cells towards specific Th2 responses. Under certain conditions, specific CLRs could also promote tolerogenic responses to allergens, which might well be exploited to develop novel therapeutic approaches of allergen-specific immunotherapy (AIT), the single treatment with potential disease-modifying capacity for allergic disease. At this regard, polymerized allergens conjugated to non-oxidized mannan (allergoid-mannan conjugated) are next-generation vaccines targeting DCs via CLRs that promote regulatory T cells, thus favoring allergen tolerance both in preclinical models and clinical trials. A better understanding of the role of CLRs in the development of allergy and in the induction of allergen tolerance might well pave the way for the design of novel strategies for allergic diseases.
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12
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Characterization of effects of chitooligosaccharide monomer addition on immunomodulatory activity in macrophages. Food Res Int 2023; 163:112268. [PMID: 36596179 DOI: 10.1016/j.foodres.2022.112268] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 12/02/2022]
Abstract
The present study aimed to investigate the effects of five chitooligosaccharide monomers of different molecular weights on immunomodulatory activity in macrophage-like RAW264.7 cells. The incubation of various chitooligosaccharide monomers enhanced phagocytosis and pinocytosis activity toward Staphylococcus aureus and Escherichia coli in RAW264.7 cells. The incorporation of chitooligosaccharide monomers significantly boosted the generation of reactive oxygen species and reactive nitrogen species, as well as the release of inflammatory cytokines. To further explore the mechanism of inflammation regulated by chitooligosaccharide, the activation inhibitors of NF-кB (CAPE) and TLR-4 (TAK-242) were utilized, the determination data demonstrated that chitobiose suppressed the expression of inflammatory cytokines and NF-кB p65. In addition, the investigation results revealed that the presence of the mannose receptor inhibitor (mannan) suppressed chitohexaose-induced phagocytic activity and inflammatory cytokines. These results suggested that the five distinct chitooligosaccharide monomers had inconsistent effects, the chitobiose and chitohexaose exhibiting the best biological activity in activating RAW264.7 cells, promoting cell proliferation, and increasing non-specific immunity.
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13
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Mastrotto F, Pirazzini M, Negro S, Salama A, Martinez-Pomares L, Mantovani G. Sulfation at Glycopolymer Side Chains Switches Activity at the Macrophage Mannose Receptor (CD206) In Vitro and In Vivo. J Am Chem Soc 2022; 144:23134-23147. [PMID: 36472883 PMCID: PMC9782796 DOI: 10.1021/jacs.2c10757] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Indexed: 12/12/2022]
Abstract
The mannose receptor (CD206) is an endocytic receptor expressed by selected innate immune cells and nonvascular endothelium, which plays a critical role in both homeostasis and pathogen recognition. Although its involvement in the development of several diseases and viral infections is well established, molecular tools able to both provide insight on the chemistry of CD206-ligand interactions and, importantly, effectively modulate its activity are currently lacking. Using novel SO4-3-Gal-glycopolymers targeting its cysteine-rich lectin ectodomain, this study uncovers and elucidates a previously unknown mechanism of CD206 blockade involving the formation of stable intracellular SO4-3-Gal-glycopolymer-CD206 complexes that prevents receptor recycling to the cell membrane. Further, we show that SO4-3-Gal glycopolymers inhibit CD206 both in vitro and in vivo, revealing hitherto unknown receptor function and demonstrating their potential as CD206 modulators within future immunotherapies.
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Affiliation(s)
- Francesca Mastrotto
- School
of Pharmacy, University of Nottingham, Nottingham NG7 2RD, U.K.
- School
of Life Sciences, University of Nottingham, Nottingham NG7 2RD, U.K.
- Department
of Pharmaceutical and Pharmacological Sciences, University of Padova, via F. Marzolo 5, Padova 35131, Italy
| | - Marco Pirazzini
- Department
of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/B, Padova 35131, Italy
| | - Samuele Negro
- Department
of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/B, Padova 35131, Italy
| | - Alan Salama
- Department
of Renal Medicine, University College London, London NW3 2PF, U.K.
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14
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Doelman W, van Kasteren SI. Synthesis of glycopeptides and glycopeptide conjugates. Org Biomol Chem 2022; 20:6487-6507. [PMID: 35903971 PMCID: PMC9400947 DOI: 10.1039/d2ob00829g] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/07/2022] [Indexed: 12/16/2022]
Abstract
Protein glycosylation is a key post-translational modification important to many facets of biology. Glycosylation can have critical effects on protein conformation, uptake and intracellular routing. In immunology, glycosylation of antigens has been shown to play a role in self/non-self distinction and the effective uptake of antigens. Improperly glycosylated proteins and peptide fragments, for instance those produced by cancerous cells, are also prime candidates for vaccine design. To study these processes, access to peptides bearing well-defined glycans is of critical importance. In this review, the key approaches towards synthetic, well-defined glycopeptides, are described, with a focus on peptides useful for and used in immunological studies. Special attention is given to the glycoconjugation approaches that have been developed in recent years, as these enable rapid synthesis of various (unnatural) glycopeptides, enabling powerful carbohydrate structure/activity studies. These techniques, combined with more traditional total synthesis and chemoenzymatic methods for the production of glycopeptides, should help unravel some of the complexities of glycobiology in the near future.
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Affiliation(s)
- Ward Doelman
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Sander I van Kasteren
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
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15
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Zhang BJ, Wang YY, Jia CY, Li SS, Wang XW, Xu Y, Chen AY, Xu HP, Wang C, Yang ZY, Wei W, Chang Y. Paeoniflorin-6'-o-benzene sulfonate ameliorates the progression of adjuvant-induced arthritis by inhibiting the interaction between Ahr and GRK2 of fibroblast-like synoviocytes. Int Immunopharmacol 2022; 108:108678. [PMID: 35364431 DOI: 10.1016/j.intimp.2022.108678] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/28/2022] [Accepted: 02/28/2022] [Indexed: 12/20/2022]
Abstract
Aryl hydrocarbon receptor (Ahr) is thought to be a crucial factor that regulates immune responses, which may be involved in the pathogenesis of autoimmune inflammation including rheumatoid arthritis (RA). The results of our group in recent years have shown that Paeoniflorin-6'-O-benzene sulfonate (code: CP-25), a novel ester derivative of paeoniflorin, has a good effect on improving RA animal models. However, whether the anti-arthritis effect of CP-25 is related to Ahr remains unclear. Here, we showed that CP-25 treatment ameliorated adjuvant-induced arthritis (AA), a rat model of RA, by inhibiting Ahr-related activities in fibroblasts like synoviocytes (FLS). AA rats were treated with CP-25 or paroxetine from days 17 to 33 after immunization. We showed that CP-25 alleviated arthritis symptoms and the pathological changes. Treatment with CP-25 decreased the expression of Ahr in the synovium of AA rats. CP-25 inhibited the expression of Ahr and the G protein-coupled receptor kinase 2 (GRK2) as well as the co-expression of GRK2 with Ahr in FLS of AA rats. Furthermore, CP-25 down-regulated the production of Kyn in FLS of AA rats. These results suggested that CP-25 may inhibit the expression and activation of Ahr. Besides, treatment with CP-25 reduced the proliferation and migration of MH7A caused by Ahr activation. In addition, we also demonstrated that CP-25 down-regulated the total and nuclear expression of Ahr and the expression of GRK2 in Kyn-treated MH7A. Moreover, the co-expression and co-localization of Ahr and GRK2in Kyn-treated MH7A were also repressed by CP-25. The data presented here demonstrated that CP-25 suppressed FLS dysfunction in rats with AA, which were associated with reduced Ahr activation and the interaction between Ahr and GRK2.
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Affiliation(s)
- Bin-Jie Zhang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Yue-Ye Wang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Cheng-Yan Jia
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Su-Su Li
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Xin-Wei Wang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Yuan Xu
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - A-Yuan Chen
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - He-Peng Xu
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Chun Wang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China
| | - Zhao-Yi Yang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China.
| | - Wei Wei
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China.
| | - Yan Chang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, China.
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16
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Whetstone CE, Ranjbar M, Omer H, Cusack RP, Gauvreau GM. The Role of Airway Epithelial Cell Alarmins in Asthma. Cells 2022; 11:1105. [PMID: 35406669 PMCID: PMC8997824 DOI: 10.3390/cells11071105] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 02/01/2023] Open
Abstract
The airway epithelium is the first line of defense for the lungs, detecting inhaled environmental threats through pattern recognition receptors expressed transmembrane or intracellularly. Activation of pattern recognition receptors triggers the release of alarmin cytokines IL-25, IL-33, and TSLP. These alarmins are important mediators of inflammation, with receptors widely expressed in structural cells as well as innate and adaptive immune cells. Many of the key effector cells in the allergic cascade also produce alarmins, thereby contributing to the airways disease by driving downstream type 2 inflammatory processes. Randomized controlled clinical trials have demonstrated benefit when blockade of TSLP and IL-33 were added to standard of care medications, suggesting these are important new targets for treatment of asthma. With genome-wide association studies demonstrating associations between single-nucleotide polymorphisms of the TSLP and IL-33 gene and risk of asthma, it will be important to understand which subsets of asthma patients will benefit most from anti-alarmin therapy.
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Affiliation(s)
| | | | | | | | - Gail M. Gauvreau
- Department of Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada; (C.E.W.); (M.R.); (H.O.); (R.P.C.)
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17
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Virtanen T. Inhalant Mammal-Derived Lipocalin Allergens and the Innate Immunity. FRONTIERS IN ALLERGY 2022; 2:824736. [PMID: 35387007 PMCID: PMC8974866 DOI: 10.3389/falgy.2021.824736] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/30/2021] [Indexed: 12/03/2022] Open
Abstract
A major part of important mammalian respiratory allergens belongs to the lipocalin family of proteins. By this time, 19 respiratory mammalian lipocalin allergens have been registered in the WHO/IUIS Allergen Nomenclature Database. Originally, lipocalins, small extracellular proteins (molecular mass ca. 20 kDa), were characterized as transport proteins but they are currently known to exert a variety of biological functions. The three-dimensional structure of lipocalins is well-preserved, and lipocalin allergens can exhibit high amino acid identities, in several cases more than 50%. Lipocalins contain an internal ligand-binding site where they can harbor small principally hydrophobic molecules. Another characteristic feature is their capacity to bind to specific cell-surface receptors. In all, the physicochemical properties of lipocalin allergens do not offer any straightforward explanations for their allergenicity. Allergic sensitization begins at epithelial barriers where diverse insults through pattern recognition receptors awaken innate immunity. This front-line response is manifested by epithelial barrier-associated cytokines which together with other components of immunity can initiate the sensitization process. In the following, the crucial factor in allergic sensitization is interleukin (IL)-4 which is needed for stabilizing and promoting the type 2 immune response. The source for IL-4 has been searched widely. Candidates for it may be non-professional antigen-presenting cells, such as basophils or mast cells, as well as CD4+ T cells. The synthesis of IL-4 by CD4+ T cells requires T cell receptor engagement, i.e., the recognition of allergen peptides, which also provides the specificity for sensitization. Lipocalin and innate immunity-associated cell-surface receptors are implicated in facilitating the access of lipocalin allergens into the immune system. However, the significance of this for allergic sensitization is unclear, as the recognition by these receptors has been found to produce conflicting results. As to potential adjuvants associated with mammalian lipocalin allergens, the hydrophobic ligands transported by lipocalins have not been reported to enhance sensitization while it is justified to suppose that lipopolysaccharide plays a role in it. Taken together, type 2 immunity to lipocalin allergens appears to be a harmful immune response resulting from a combination of signals involving both the innate and adaptive immunities.
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Affiliation(s)
- Tuomas Virtanen
- Department of Clinical Microbiology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
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18
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Chang Y, Han P, Wang Y, Jia C, Zhang B, Zhao Y, Li S, Li S, Wang X, Yang X, Wei W. Tryptophan 2,3-dioxygenase 2 plays a key role in regulating the activation of fibroblast-like synoviocytes in autoimmune arthritis. Br J Pharmacol 2021; 179:3024-3042. [PMID: 34969166 DOI: 10.1111/bph.15787] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Abnormal kynurenine (Kyn) metabolism has been closely linked to the pathogenesis of rheumatoid arthritis (RA). The aims of this study were to investigate the role of tryptophan 2,3-dioxygenase 2 (TDO2), a rate-limiting enzyme that converts tryptophan (Trp) to Kyn, in regulating fibroblast-like synoviocyte (FLS)-mediated synovial inflammation in autoimmune arthritis. EXPERIMENTAL APPROACH The expression of TDO2 was determined by immunohistochemistry, confocal laser scanning fluorescence microscopy, imaging flow cytometry, and Western blot. TDO2 activity was tested by high performance liquid chromatography and colorimetric assay. TDO2 small interfering RNA (siRNA) and TDO2 inhibitor 680C91 were used to inhibit TDO2 in AA-FLS function in vitro. A rat model of adjuvant-induced arthritis (AA) was used to evaluate the in vivo effect of allopurinol (ALLO), a TDO2 inhibitor. KEY RESULTS TDO2 expression was strongly increased in synovial tissue and FLS of RA and AA. Immune cells were found to express high amount of TDO2 proteins at the peak stage of AA. Pharmacological inhibition or knockdown of TDO2 in AA-FLS resulted in a reduced proliferation, secretion, migration and invasion. Kyn restored the inhibitory effect of TDO2 inhibition on activation of AA-FLS. ALLO treatment ameliorated the arthritis severity and decreased the activity of TDO2. CONCLUSION AND IMPLICATIONS Our results suggest that elevated TDO2 expression may contribute to synovial inflammation and joint destruction during arthritis. Therefore, targeting TDO2 activity and the Kyn pathway of Trp degradation may represent a potential therapeutic strategy in RA.
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Affiliation(s)
- Yan Chang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Ping Han
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Yueye Wang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Chengyan Jia
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Bingjie Zhang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Yingjie Zhao
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Susu Li
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Siyu Li
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Xinwei Wang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Xuezhi Yang
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
| | - Wei Wei
- Key Laboratory of Anti-Inflammatory and Immune Medicine, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Institute of Clinical Pharmacology, Anhui Medical University, Ministry of Education, Hefei, Anhui Province, China
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19
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Zurmühl N, Schmitt A, Formentini U, Weiss J, Appel H, Debatin KM, Fabricius D. Differential uptake of three clinically relevant allergens by human plasmacytoid dendritic cells. Clin Mol Allergy 2021; 19:23. [PMID: 34789269 PMCID: PMC8597288 DOI: 10.1186/s12948-021-00163-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/10/2021] [Indexed: 11/20/2022] Open
Abstract
Background Human plasmacytoid dendritic cells (pDC) have a dual role as interferon-producing and antigen-presenting cells. Their relevance for allergic diseases is controversial. and the impact of pDC on allergic immune responses is poorly understood. Methods This in vitro study on human pDC isolated from peripheral blood was designed to compare side by side the uptake of three clinically relevant representative allergens: fluorochrome-labeled house dust mite Der p 1, Bee venom extract from Apis mellifera (Api) and the food allergen OVA analyzed flow cytometry and confocal microscopy. Results We found that the internalization and its regulation by TLR9 ligation was significantly different between allergens in terms of time course and strength of uptake. Api and OVA uptake in pDC of healthy subjects was faster and reached higher levels than Der p 1 uptake. CpG ODN 2006 suppressed OVA uptake and to a lesser extent Der p 1, while Api internalization was not affected. All allergens colocalized with LAMP1 and EEA1, with Api being internalized particularly fast and reaching highest intracellular levels in pDC. Of note, we could not determine any specific differences in antigen uptake in allergic compared with healthy subjects. Conclusions To our knowledge this is the first study that directly compares uptake regulation of clinically relevant inhalative, injective and food allergens in pDC. Our findings may help to explain differences in the onset and severity of allergic reactions as well as in the efficiency of AIT. Supplementary Information The online version contains supplementary material available at 10.1186/s12948-021-00163-8.
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Affiliation(s)
- Noelle Zurmühl
- Department of Pediatrics, University Medical Center Ulm, Eythstr. 24, 89075, Ulm, Germany
| | - Anna Schmitt
- Department of Pediatrics, University Medical Center Ulm, Eythstr. 24, 89075, Ulm, Germany
| | - Ulrike Formentini
- Department of Pediatrics, University Medical Center Ulm, Eythstr. 24, 89075, Ulm, Germany
| | - Johannes Weiss
- Department of Dermatology and Allergic Diseases, University Medical Center Ulm, Ulm, Germany
| | - Heike Appel
- Department of Otolaryngology, Ulm University, Ulm, Germany
| | - Klaus-Michael Debatin
- Department of Pediatrics, University Medical Center Ulm, Eythstr. 24, 89075, Ulm, Germany
| | - Dorit Fabricius
- Department of Pediatrics, University Medical Center Ulm, Eythstr. 24, 89075, Ulm, Germany.
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20
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The diversity of lipocalin receptors. Biochimie 2021; 192:22-29. [PMID: 34534611 DOI: 10.1016/j.biochi.2021.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 11/23/2022]
Abstract
Lipocalins are important carriers of preferentially hydrophobic molecules, but they can also bind other ligands, like highly polar siderophores or intact proteins. Consequently, they are involved in a variety of physiological processes in many species. Since lipocalins are mainly extracellular proteins, they have to interact with cell receptors to exert their biological effects. In contrast to the large number of lipocalins identified in the last years, the number of receptors known is still limited. Nevertheless, some novel findings concerning the molecules involved in cellular uptake or signaling effects of lipocalins have been made recently. This review presents a detailed overview of the receptors identified so far. The methods used for isolation or identification are described and structural as well as functional information on these proteins is presented essentially in chronological order of their initial discovery.
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21
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Ouyang A, Wang H, Su J, Liu X. Mannose Receptor Mediates the Activation of Chitooligosaccharides on Blunt Snout Bream ( Megalobrama amblycephala) Macrophages. Front Immunol 2021; 12:686846. [PMID: 34408745 PMCID: PMC8365301 DOI: 10.3389/fimmu.2021.686846] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 07/16/2021] [Indexed: 01/23/2023] Open
Abstract
Chitooligosaccharide (COS) is an important immune enhancer and has been proven to have a variety of biological activities. Our previous research has established an M1 polarization mode by COS in blunt snout bream (Megalobrama amblycephala) macrophages, but the mechanism of COS activation of blunt snout bream macrophages remains unclear. In this study, we further explored the internalization mechanism and signal transduction pathway of chitooligosaccharide hexamer (COS6) in blunt snout bream macrophages. The results showed that mannose receptor C-type lectin-like domain 4-8 of M. amblycephala (MaMR CTLD4-8) could recognize and bind to COS6 and mediate COS6 into macrophages by both clathrin-dependent and caveolin-dependent pathways. In the inflammatory response of macrophages activated by COS6, the gene expression of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and nitric oxide synthase 2 (NOS2) was significantly inhibited after MaMR CTLD4-8-specific antibody blockade. However, even if it was blocked, the expression of these inflammation-related genes was still relatively upregulated, which suggested that there are other receptors involved in immune regulation. Further studies indicated that MaMR CTLD4-8 and Toll-like receptor 4 (TLR4) cooperated to regulate the pro-inflammatory response of macrophages caused by COS6. Taken together, these results revealed that mannose receptor (MR) CTLD4-8 is indispensable in the process of recognition, binding, internalization, and immunoregulation of COS in macrophages of blunt snout bream.
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Affiliation(s)
- Aotian Ouyang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Huabing Wang
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Jianguo Su
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Provincial Engineering Laboratory for Pond Aquaculture, Hubei Engineering Technology Research Center for Aquatic Animal Disease Control and Prevention, Wuhan, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, China
| | - Xiaoling Liu
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Hubei Provincial Engineering Laboratory for Pond Aquaculture, Hubei Engineering Technology Research Center for Aquatic Animal Disease Control and Prevention, Wuhan, China
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22
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Keumatio Doungstop BC, van Vliet SJ, van Ree R, de Jong EC, van Kooyk Y. Carbohydrates in allergy: from disease to novel immunotherapies. Trends Immunol 2021; 42:635-648. [PMID: 34052120 DOI: 10.1016/j.it.2021.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/01/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022]
Abstract
Respiratory allergic disorders are a global public health problem that are responsible for substantial morbidity and healthcare expenditure. Despite the availability of allergen immunotherapy (AIT), its efficacy is suboptimal and regimens are lengthy, with a significant risk of potentially severe side effects. Studies on the recognition of allergens by immune cells through carbohydrate-lectin interactions, which play a crucial role in immune modulation and pathogenesis of allergy, have paved the way for improvements in AIT. We highlight innovative approaches for more effective and safer AIT, including the use of allergens conjugated to specific carbohydrates that bind to C-type lectins (CLRs) and sialic acid-binding immunoglobulin-type lectins (Siglecs) on immune cells to induce suppressive responses.
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Affiliation(s)
- B C Keumatio Doungstop
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center (UMC), location Vrije Universiteit Medical Center (VUmc), Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - S J van Vliet
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center (UMC), location Vrije Universiteit Medical Center (VUmc), Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - R van Ree
- Department of Experimental Immunology, Amsterdam UMC, location Academic Medical Center (AMC), Amsterdam, The Netherlands; Department of Otorhinolaryngology, Amsterdam UMC, location AMC, Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - E C de Jong
- Department of Experimental Immunology, Amsterdam UMC, location Academic Medical Center (AMC), Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands
| | - Y van Kooyk
- Department of Experimental Immunology, Amsterdam UMC, location Academic Medical Center (AMC), Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands.
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23
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Human monocyte-derived type 1 and 2 macrophages recognize Ara h 1, a major peanut allergen, by different mechanisms. Sci Rep 2021; 11:10141. [PMID: 33980880 PMCID: PMC8115286 DOI: 10.1038/s41598-021-89402-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 04/19/2021] [Indexed: 11/21/2022] Open
Abstract
Evidence has suggested that major peanut allergen Ara h 1 activates dendritic cells (DCs) via interaction with DC-SIGN (dendritic cell-specific intercellular adhesion molecule-3-grabbing non-integrin), a C-type lectin receptor, and contributes to development of peanut allergy. Since macrophages, as well as DCs, play a crucial role in innate immunity, we investigated whether natural Ara h 1 (nAra h 1) activates two different subsets of macrophages, human monocyte derived macrophage type 1 (hMDM1: pro-inflammatory model) and type 2 (hMDM2: anti-inflammatory model). hMDM1 and hMDM2 predominantly produced pro-inflammatory cytokines (IL-6 and TNF-α) and an anti-inflammatory cytokine (IL-10) in response to nAra h 1, respectively. hMDM2 took up nAra h 1 and expressed DC-SIGN at higher levels than hMDM1. However, small interfering RNA knockdown of DC-SIGN did not suppress nAra h 1 uptake and nAra h 1-mediated cytokine production in hMDM2. Inhibitors of scavenger receptor class A type I (SR-AI) suppressed the response of hMDM2, but not of hMDM1, suggesting that SR-AI is a major receptor in hMDM2 for nAra h 1 recognition and internalization. nAra h 1 appears to exert stimulatory capacity on DC and macrophages via different receptors. This study advances our understanding how a major peanut allergen interacts with innate immunity.
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24
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Jambari NN, Liddell S, Martinez-Pomares L, Alcocer MJC. Effect of O-linked glycosylation on the antigenicity, cellular uptake and trafficking in dendritic cells of recombinant Ber e 1. PLoS One 2021; 16:e0249876. [PMID: 33914740 PMCID: PMC8084162 DOI: 10.1371/journal.pone.0249876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 03/29/2021] [Indexed: 11/18/2022] Open
Abstract
Ber e 1, a major Brazil nut allergen, has been successfully produced in the yeast Pichia pastoris expression system as homogenous recombinant Ber e 1 (rBer e 1) with similar physicochemical properties and identical immunoreactivity to its native counterpart, nBer e 1. However, O-linked glycans was detected on the P.pastoris-derived rBer e 1, which is not naturally present in nBer e 1, and may contribute to the allergic sensitisation. In this study, we addressed the glycosylation differences between P. pastoris-derived recombinant Ber e 1 and its native counterparts. We also determined whether this fungal glycosylation could affect the antigenicity and immunogenicity of the rBer e 1 by using dendritic cells (DC) as an immune cell model due to their role in modulating the immune response. We identified that the glycosylation occurs at Ser96, Ser101 and Ser110 on the large chain and Ser19 on the small polypeptide chain of rBer e 1 only. The glycosylation on rBer e 1 was shown to elicit varying degree of antigenicity by binding to different combination of human leukocyte antigens (HLA) at different frequencies compared to nBer e 1 when tested using human DC-T cell assay. However, both forms of Ber e 1 are weak immunogens based from their low response indexes (RI). Glycans present on rBer e 1 were shown to increase the efficiency of the protein recognition and internalization by murine bone marrow-derived dendritic cells (bmDC) via C-type lectin receptors, particularly the mannose receptor (MR), compared to the non-glycosylated nBer e 1 and SFA8, a weak allergenic 2S albumin protein from sunflower seed. Binding of glycosylated rBer e 1 to MR alone was found to not induce the production of IL-10 that modulates bmDC to polarise Th2 cell response by suppressing IL-12 production and DC maturation. Our findings suggest that the O-linked glycosylation by P. pastoris has a small but measurable effect on the in vitro antigenicity of the rBer e 1 compared to its non-glycosylated counterpart, nBer e 1, and thus may influence its applications in diagnostics and immunotherapy.
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Affiliation(s)
- Nuzul N. Jambari
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Laboratory of Food Safety and Food Integrity (FOSFI), Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Susan Liddell
- Division of Animal Science, School of Biosciences, University of Nottingham, Loughborough, United Kingdom
| | - Luisa Martinez-Pomares
- School of Life Sciences, University of Nottingham, Queen’s Medical Centre, Nottingham, United Kingdom
| | - Marcos J. C. Alcocer
- Division of Food Sciences, School of Biosciences, University of Nottingham, Loughborough, United Kingdom
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25
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Kim B, Lee YE, Yeon JW, Go GY, Byun J, Lee K, Lee HK, Hur JK, Jang M, Kim TH. A novel therapeutic modality using CRISPR-engineered dendritic cells to treat allergies. Biomaterials 2021; 273:120798. [PMID: 33895493 DOI: 10.1016/j.biomaterials.2021.120798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 12/22/2022]
Abstract
Despite the important roles of dendritic cells (DCs) in airway allergies, current therapeutic strategies such as drugs, allergen immunotherapy and biologics haven't been targeted at them. In this study, we established a promising DC-based therapeutic approach for the alleviation of allergic rhinitis (AR)-associated allergic reactions, using clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9-mediated targeted gene disruption. RNA sequencing analysis revealed upregulation of vacuolar protein sorting 37 B (VPS37B) in AR-derived DCs, indicating a novel molecular target. Following antigen presentation, VPS37A and VPS37B enabled endocytosis of the mannose receptor, which recognizes the house dust mite (HDM) allergen Der p 1. DCs with targeted disruption of VPS37A/B alleviated Th2 cytokine production when co-cultured in vitro with allogeneic naïve CD4+ T cell from patients with AR. Furthermore, nasal administration of Vps37a/b-disrupted bone marrow DCs to a mouse model of AR resulted in strongly reduced AR-related symptoms. Thus, this novel modality using genetically engineered DCs can provide an effective therapeutic and preventative strategy for allergic diseases.
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Affiliation(s)
- Byoungjae Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, 02841, Republic of Korea; Neuroscience Research Institute, Korea University, College of Medicine, Seoul, 02841, Republic of Korea
| | - Young Eun Lee
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seongbuk-Gu, Seoul, 02792, Republic of Korea; Department of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Ji Woo Yeon
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Ga-Yeon Go
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seongbuk-Gu, Seoul, 02792, Republic of Korea
| | - Junhyoung Byun
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Kijeong Lee
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Hyomin K Lee
- Department of Medicine, Major in Medical Genetics, Graduate School, Hanyang University, Seoul, 04763, Republic of Korea
| | - Junho K Hur
- Department of Genetics, College of Medicine, Hanyang University, Seoul, 04763, Republic of Korea; Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Mihue Jang
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seongbuk-Gu, Seoul, 02792, Republic of Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Tae Hoon Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, 02841, Republic of Korea.
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26
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Yang D, Yang L, Cai J, Hu X, Li H, Zhang X, Zhang X, Chen X, Dong H, Nie H, Li Y. A sweet spot for macrophages: Focusing on polarization. Pharmacol Res 2021; 167:105576. [PMID: 33771700 DOI: 10.1016/j.phrs.2021.105576] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 12/21/2022]
Abstract
Macrophages are a type of functionally plastic cells that can create a pro-/anti-inflammatory microenvironment for organs by producing different kinds of cytokines, chemokines, and growth factors to regulate immunity and inflammatory responses. In addition, they can also be induced to adopt different phenotypes in response to extracellular and intracellular signals, a process defined as M1/M2 polarization. Growing evidence indicates that glycobiology is closely associated with this polarization process. In this research, we review studies of the roles of glycosylation, glucose metabolism, and key lectins in the regulation of macrophages function and polarization to provide a new perspective for immunotherapies for multiple diseases.
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Affiliation(s)
- Depeng Yang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Lijun Yang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Jialing Cai
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110000, China
| | - Xibo Hu
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Huaxin Li
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xiaoqing Zhang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xiaohan Zhang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xinghe Chen
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Haiyang Dong
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Huan Nie
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
| | - Yu Li
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
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27
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Conjunctival transcriptome analysis reveals the overexpression of multiple pattern recognition receptors in vernal keratoconjunctivitis. Ocul Surf 2021; 19:241-248. [DOI: 10.1016/j.jtos.2020.09.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 09/11/2020] [Accepted: 09/22/2020] [Indexed: 12/22/2022]
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28
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Ruiter B, Smith NP, Fleming E, Patil SU, Hurlburt BK, Maleki SJ, Shreffler WG. Peanut protein acts as a T H2 adjuvant by inducing RALDH2 in human antigen-presenting cells. J Allergy Clin Immunol 2020; 148:182-194.e4. [PMID: 33378690 DOI: 10.1016/j.jaci.2020.11.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/26/2020] [Accepted: 11/26/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Peanut is a potent inducer of proallergenic TH2 responses in susceptible individuals. Antigen-presenting cells (APCs) including dendritic cells and monocytes instruct naive T cells to differentiate into various effector cells, determining immune responses such as allergy and tolerance. OBJECTIVE We sought to detect peanut protein (PN)-induced changes in gene expression in human myeloid dendritic cells (mDCs) and monocytes, identify signaling receptors that mediate these changes, and assess how PN-induced genes in mDCs impact their ability to promote T-cell differentiation. METHODS mDCs, monocytes, and naive CD4+ T cells were isolated from blood bank donors and peanut-allergic patients. APCs were incubated with PN and other stimulants, and gene expression was measured using microarray and RT quantitative PCR. To assess T-cell differentiation, mDCs were cocultured with naive TH cells. RESULTS PN induced a unique gene expression profile in mDCs, including the gene that encodes retinaldehyde dehydrogenase 2 (RALDH2), a rate-limiting enzyme in the retinoic acid (RA)-producing pathway. Stimulation of mDCs with PN also induced a 7-fold increase in the enzymatic activity of RALDH2. Blocking antibodies against Toll-like receptor (TLR)1/TLR2, as well as small interfering RNA targeting TLR1/TLR2, reduced the expression of RALDH2 in PN-stimulated APCs by 70%. Naive TH cells cocultured with PN-stimulated mDCs showed an RA-dependent 4-fold increase in production of IL-5 and expression of integrin α4β7. CONCLUSIONS PN induces RALDH2 in human APCs by signaling through the TLR1/TLR2 heterodimer. This leads to production of RA, which acts on TH cells to induce IL-5 and gut-homing integrin. RALDH2 induction by PN in APCs and RA-promoted TH2 differentiation could be an important factor determining allergic responses to peanut.
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Affiliation(s)
- Bert Ruiter
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
| | - Neal P Smith
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass
| | - Elizabeth Fleming
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass
| | - Sarita U Patil
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass; Food Allergy Center, Massachusetts General Hospital, Boston, Mass
| | - Barry K Hurlburt
- US Department of Agriculture, Agricultural Research Service, New Orleans, La
| | - Soheila J Maleki
- US Department of Agriculture, Agricultural Research Service, New Orleans, La
| | - Wayne G Shreffler
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass; Food Allergy Center, Massachusetts General Hospital, Boston, Mass
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29
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Abu Khweek A, Kim E, Joldrichsen MR, Amer AO, Boyaka PN. Insights Into Mucosal Innate Immune Responses in House Dust Mite-Mediated Allergic Asthma. Front Immunol 2020; 11:534501. [PMID: 33424827 PMCID: PMC7793902 DOI: 10.3389/fimmu.2020.534501] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 09/01/2020] [Indexed: 01/09/2023] Open
Abstract
The prevalence of asthma has been rising steadily for several decades, and continues to be a major public health and global economic burden due to both direct and indirect costs. Asthma is defined as chronic heterogeneous inflammatory diseases characterized by airway obstruction, mucus production and bronchospasm. Different endotypes of asthma are being recognized based on the distinct pathophysiology, genetic predisposition, age, prognosis, and response to remedies. Mucosal innate response to environmental triggers such as pollen, cigarette smoke, fragrances, viral infection, and house dust mite (HDM) are now recognized to play an important role in allergic asthma. HDM are the most pervasive allergens that co-habitat with us, as they are ubiquitous in-house dusts, mattress and bedsheets, and feed on a diet of exfoliated human skin flakes. Dermatophagoides pteronyssinus, is one among several HDM identified up to date. During the last decade, extensive studies have been fundamental in elucidating the interactions between HDM allergens, the host immune systems and airways. Moreover, the paradigm in the field of HDM-mediated allergy has been shifted away from being solely a Th2-geared to a complex response orchestrated via extensive crosstalk between the epithelium, professional antigen presenting cells (APCs) and components of the adaptive immunity. In fact, HDM have several lessons to teach us about their allergenicity, the complex interactions that stimulate innate immunity in initiating and perpetuating the lung inflammation. Herein, we review main allergens of Dermatophagoides pteronyssinus and their interactions with immunological sentinels that promote allergic sensitization and activation of innate immunity, which is critical for the development of the Th2 biased adaptive immunity to HDM allergens and development of allergic asthma.
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Affiliation(s)
- Arwa Abu Khweek
- Department of Biology and Biochemistry, Birzeit University, Birzeit, Palestine.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Eunsoo Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Marisa R Joldrichsen
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Amal O Amer
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
| | - Prosper N Boyaka
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
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30
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Shi Y, Wang M, Ding Y, Chen J, Niu B, Chen Q. Effects of Maillard reaction on structural modification and potential allergenicity of peanut 7S globulin (Ara h 1). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:5617-5626. [PMID: 32608517 DOI: 10.1002/jsfa.10614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 05/16/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Ara h 1 is a major food allergen in peanuts. Recently, many studies have revealed that the Maillard reaction (MR) affects the allergenicity of food proteins. RESULTS To investigate the influence of the MR on the allergenicity of Ara h 1, R-Ara h 1 was processed with glucose in dry heating conditions for different periods. The extent of the MR was assessed by four methods. The changes in secondary and tertiary structures were characterized through spectroscopy assays. Advanced glycation end products (AGE) structures were identified by protein sample dry heating for 60 min, indicating the formation of AGE-Ara h 1. Simulated gastric fluid (SGF) digestion analysis showed that AGE-Ara h 1 has higher resistance to peptic digestion than R-Ara h 1. The BALB/c mouse model was also utilized to explore the effect of the MR on the allergenicity of Ara h 1, and the results showed that the Th2-type cytokines, antibodies, and histamine content increased, and there was a greater degree of degranulation of rat basophilic leukemia (RBL) cells in the AGE-Ara h 1 group compared with the R-Ara h 1 group. CONCLUSION During the process of dry heating, proteins participated in the MR with changes in secondary and tertiary structures. The condition applying a temperature of 100 °C for 60 min caused the formation of AGE-Ara h 1. Simulated gastric fluid digestion analysis showed that AGE-Ara h 1 had a greater resistance to peptic digestion than R-Ara h 1. The BALB/c mouse model showed that AGE-Ara h 1 had more allergenicity, indicating that the MR could enhance the allergenicity of Ara h 1. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Yunfeng Shi
- School of Life Sciences, Shanghai University, Shanghai, China
- Shanghai Institute of Biological Products Co., ltd., Shanghai, China
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31
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Lamiable O, Mayer JU, Munoz-Erazo L, Ronchese F. Dendritic cells in Th2 immune responses and allergic sensitization. Immunol Cell Biol 2020; 98:807-818. [PMID: 32738152 DOI: 10.1111/imcb.12387] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 12/23/2022]
Abstract
Allergic responses are characterized by the activation of a specific subset of effector CD4+ T cells, the T-helper type 2 (Th2) cells, that respond to harmless environmental antigens causing inflammation and pathology. Th2 cells are also found in the context of parasite infections, where they can mediate parasite clearance and expulsion, and support tissue repair. The process that leads to the activation of Th2 cells in vivo is incompletely understood: while it has become clear that "conventional" dendritic cells are essential antigen-presenting cells for the initiation of Th2 immune responses, the molecules that are expressed by dendritic cells exposed to allergens, and the mediators that are produced as a consequence and signal to naïve CD4+ T cells to promote their development into effector Th2, remain to be defined. Here we summarize recent developments in the identification of the dendritic cell subsets involved in Th2 responses, review potential mechanisms proposed to explain the generation of these immune responses, and discuss the direct and indirect signals that condition dendritic cells to drive the development of Th2 responses during allergen or parasite exposure.
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Affiliation(s)
| | | | | | - Franca Ronchese
- Malaghan Institute of Medical Research, Wellington, New Zealand
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32
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Alobaid M, Richards SJ, Alexander M, Gibson M, Ghaemmaghami A. Developing immune-regulatory materials using immobilized monosaccharides with immune-instructive properties. Mater Today Bio 2020; 8:100080. [PMID: 33205040 PMCID: PMC7649522 DOI: 10.1016/j.mtbio.2020.100080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 11/15/2022] Open
Abstract
New strategies for immune modulation have shown real promise in regenerative medicine as well as the fight against autoimmune diseases, allergies, and cancer. Dendritic cells (DCs) are gatekeepers of the immune system and their ability in shaping the adaptive immune responses makes DCs ideal targets for immune modulation. Carbohydrates are abundant in different biological systems and are known to modulate DC phenotype and function. However, how simple monosaccharides instruct DC function is less well understood. In this study, we used a combinatorial array of immobilized monosaccharides to investigate how they modulate DC phenotype and function and crucially the impact of such changes on downstream adaptive immune responses. Our data show that a selection of monosaccharides significantly suppress lipopolysaccharide-induced DC activation as evidenced by a reduction in CD40 expression, IL-12 production, and indoleamine 2,3-dioxygenase activity, while inducing a significant increase in IL-10 production. These changes are indicative of the induction of an anti-inflammatory or regulatory phenotype in DCs, which was further confirmed in DC-T cell co-cultures where DCs cultured on the 'regulatory' monosaccharide-coated surfaces were shown to induce naïve T cell polarization toward regulatory phenotype. Our data also highlighted a selection of monosaccharides that are able to promote mixed Treg and Th17 cell differentiation, a T cell phenotype expected to be highly immune suppressive. These data show the potential immunomodulatory effects of immobilized monosaccharides in priming DCs and skewing T cell differentiation toward an immune-regulatory phenotype. The ability to fine-tune immune responses using these simple carbohydrate combinations (e.g. as coatings for existing materials) can be utilized as novel tools for immune modulation with potential applications in regenerative medicine, implantable medical devices, and wound healing where reduction of inflammatory responses and maintaining immune homeostasis are desirable.
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Key Words
- (Gal1), 100% 1-amino-1-deoxy-β-d-galactose
- (Gal1–Gal2), 50% 1-amino-1-deoxy-β-d-galactose + 50% 2-amino-2-deoxy-β-d-galactose
- (Gal2), 100% 2-amino-2-deoxy-β-d-galactose
- (Gal2–Man1), 90% 2-amino-2-deoxy-β-d-galactose + 10% 1-amino-1-deoxy-β-d-mannose
- (Gal2–Man2), 2-amino-2-deoxy-β-d-galactose + 10% 2-amino-2-deoxy-β-d-mannose
- (Man1–Man2), 40% 1-amino-1-deoxy-β-d-mannose + 60% 2-amino-2-deoxy-β-d-mannose
- CLR, C-type lectin receptor
- Carbohydrates
- DC-SIGN, Dendritic cell-specific intercellular adhesion molecule 3-grabbing nonintegrin
- DCs, Dendritic cells
- Dendritic cells
- FBS, Fetal bovine serum
- Fucose
- Galactose
- IDO, Indoleamine 2,3-dioxygenase
- Immune modulation
- Immune-instructive materials
- LPS, Lipopolysaccharide
- MFI, Median fluorescence intensity
- MR, Mannose receptor
- MT, 1-methyl-DL-tryptophan
- Mannose
- PRR, Pattern recognition receptor
- Polymers
- T cells
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Affiliation(s)
- M.A. Alobaid
- Immunology & Immuno-Bioengineering, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
| | - S.-J. Richards
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - M.R. Alexander
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
| | - M.I. Gibson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - A.M. Ghaemmaghami
- Immunology & Immuno-Bioengineering, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
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Novak N, Maleki SJ, Cuadrado C, Crespo JF, Cabanillas B. Interaction of Monocyte-Derived Dendritic Cells with Ara h 2 from Raw and Roasted Peanuts. Foods 2020; 9:foods9070863. [PMID: 32630617 PMCID: PMC7404797 DOI: 10.3390/foods9070863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 12/28/2022] Open
Abstract
Ara h 2 is a relevant peanut allergen linked to severe allergic reactions. The interaction of Ara h 2 with components of the sensitization phase of food allergy (e.g., dendritic cells) has not been investigated, and could be key to understanding the allergenic potential of this allergen. In this study, we aimed to analyze such interactions and the possible mechanism involved. Ara h 2 was purified from two forms of peanut, raw and roasted, and labeled with a fluorescent dye. Human monocyte-derived dendritic cells (MDDCs) were obtained, and experiments of Ara h 2 internalization by MDDCs were carried out. The role of the mannose receptor in the internalization of Ara h 2 from raw and roasted peanuts was also investigated. Results showed that Ara h 2 internalization by MDDCs was both time and dose dependent. Mannose receptors in MDDCs had a greater implication in the internalization of Ara h 2 from roasted peanuts. However, this receptor was also important in the internalization of Ara h 2 from raw peanuts, as opposed to other allergens such as raw Ara h 3.
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Affiliation(s)
- Natalija Novak
- Department of Dermatology and Allergy, University of Bonn Medical Center, DE–53127 Bonn, Germany;
| | - Soheila J. Maleki
- U.S. Department of Agriculture, Agriculture Research Service, Southern Regional Research Center, New Orleans, LA 70124, USA;
| | - Carmen Cuadrado
- Department of Food Technology, National Institute of Agricultural, Food Research and Technology (INIA), Ctra. La Coruña Km. 7.5, 28040 Madrid, Spain;
| | - Jesus F. Crespo
- Department of Allergy, Research Institute Hospital 12 de Octubre, Avenida de Córdoba s/n, 28041 Madrid, Spain;
| | - Beatriz Cabanillas
- Department of Allergy, Research Institute Hospital 12 de Octubre, Avenida de Córdoba s/n, 28041 Madrid, Spain;
- Correspondence:
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C-Type Lectin Receptors in Antifungal Immunity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1204:1-30. [PMID: 32152941 DOI: 10.1007/978-981-15-1580-4_1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Most fungal species are harmless to humans and some exist as commensals on mucocutaneous surfaces. Yet many fungi are opportunistic pathogens, causing life-threatening invasive infections when the immune system becomes compromised. The fungal cell wall contains conserved pathogen-associated molecular patterns (PAMPs), which allow the immune system to distinguish between self (endogenous molecular patterns) and foreign material. Sensing of invasive microbial pathogens is achieved through recognition of PAMPs by pattern recognition receptors (PRRs). One of the predominant fungal-sensing PRRs is the C-type lectin receptor (CLR) family. These receptors bind to structures present on the fungal cell wall, eliciting various innate immune responses as well as shaping adaptive immunity. In this chapter, we specifically focus on the four major human fungal pathogens, Candida albicans, Aspergillus fumigatus, Cryptococcus neoformans and Pneumocystis jirovecii, reviewing our current understanding of the CLRs that are involved in their recognition and protection of the host.
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Höft MA, Hoving JC, Brown GD. Signaling C-Type Lectin Receptors in Antifungal Immunity. Curr Top Microbiol Immunol 2020; 429:63-101. [PMID: 32936383 DOI: 10.1007/82_2020_224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We are all exposed to fungal organisms daily, and although many of these organisms are not harmful, billions of people a year contract a fungal infection. Most of these infections are not fatal and can be cleared by the host immune response. However, due to an increase in high-risk populations, the global fungal burden has increased, with more than 1.5 million deaths per year caused by invasive fungal infections. The fungal cell wall is an important surface for interacting with the host immune system as it contains pathogen-associated molecular patterns (PAMPs) which are detected as being foreign by the host pattern recognition receptors (PRRs). C-type lectin receptors are a group of PRRs that play a central role in the protection against invasive fungal infections. Following the recognition of fungal PAMPs, CLRs trigger various innate and adaptive immune responses. In this chapter, we specifically focus on C-type lectin receptors capable of activating downstream signaling pathways, resulting in protective antifungal immune responses. The current roles that these signaling CLRs play in protection against four of the most prevalent fungal infections affecting humans are reviewed. These include Candida albicans, Aspergillus fumigatus, Cryptococcus neoformans and Pneumocystis jirovecii.
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Affiliation(s)
- Maxine A Höft
- AFGrica Medical Mycology Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM) at the University of Cape Town, Werner & Beit South Building, Anzio Road, Observatory, 7925, Cape Town, South Africa
| | - J Claire Hoving
- AFGrica Medical Mycology Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM) at the University of Cape Town, Werner & Beit South Building, Anzio Road, Observatory, 7925, Cape Town, South Africa
| | - Gordon D Brown
- Medical Research Council Centre for Medical Mycology at the University of Exeter, Geoffrey Pope Building, Stocker Road, EX4 4QD, Exeter, UK.
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Kanemaru K, Noguchi E, Tahara-Hanaoka S, Mizuno S, Tateno H, Denda-Nagai K, Irimura T, Matsuda H, Sugiyama F, Takahashi S, Shibuya K, Shibuya A. Clec10a regulates mite-induced dermatitis. Sci Immunol 2019; 4:4/42/eaax6908. [DOI: 10.1126/sciimmunol.aax6908] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 10/24/2019] [Indexed: 01/19/2023]
Abstract
House dust mite (HDM) is a major allergen that causes allergic diseases such as atopic dermatitis. However, the regulatory mechanisms of HDM-induced immune responses are incompletely understood. NC/Nga mice are an inbred strain that is more susceptible to HDM and develops more severe dermatitis than other strains. Using whole-exome sequencing, we found that NC/Nga mice carry a stop-gain mutation inClec10a, which encodes a C-type lectin receptor, Clec10a (MGL1/CD301a). The repair of this gene mutation using the CRISPR-Cas9 system ameliorated HDM-induced dermatitis, indicating that the Clec10a mutation is responsible for hypersensitivity to HDM in NC/Nga mice. Similarly,Clec10a−/−mice on the C57BL/6J background showed exacerbated HDM-induced dermatitis. Clec10a expressed on skin macrophages inhibits HDM-induced Toll-like receptor 4 (TLR4)–mediated inflammatory cytokine production through the inhibitory immunoreceptor tyrosine activating motif in its cytoplasmic portion. We identified asialoglycoprotein receptor 1 (Asgr1) as a functional homolog of mouse Clec10a in humans. Moreover, we found that a mucin-like molecule in HDM is a ligand for mouse Clec10a and human Asgr1. Skin application of the ligand ameliorated a TLR4 ligand-induced dermatitis in mice. Our findings suggest that Clec10a in mice and Asgr1 in humans play an important role in skin homeostasis against inflammation associated with HDM-induced dermatitis.
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Soh WT, Aglas L, Mueller GA, Gilles S, Weiss R, Scheiblhofer S, Huber S, Scheidt T, Thompson PM, Briza P, London RE, Traidl‐Hoffmann C, Cabrele C, Brandstetter H, Ferreira F. Multiple roles of Bet v 1 ligands in allergen stabilization and modulation of endosomal protease activity. Allergy 2019; 74:2382-2393. [PMID: 31230350 PMCID: PMC6910946 DOI: 10.1111/all.13948] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 04/30/2019] [Indexed: 12/21/2022]
Abstract
Background Over 100 million people worldwide suffer from birch pollen allergy. Bet v 1 has been identified as the major birch pollen allergen. However, the molecular mechanisms of birch allergic sensitization, including the roles of Bet v 1 and other components of the birch pollen extract, remain incompletely understood. Here, we examined how known birch pollen–derived molecules influence the endolysosomal processing of Bet v 1, thereby shaping its allergenicity. Methods We analyzed the biochemical and immunological interaction of ligands with Bet v 1. We then investigated the proteolytic processing of Bet v 1 by endosomal extracts in the presence and absence of ligands, followed by a detailed kinetic analysis of Bet v 1 processing by individual endolysosomal proteases as well as the T‐cell epitope presentation in BMDCs. Results We identified E1 phytoprostanes as novel Bet v 1 ligands. Pollen‐derived ligands enhanced the proteolytic resistance of Bet v 1, affecting degradation kinetics and preferential cleavage sites of the endolysosomal proteases cathepsin S and legumain. E1 phytoprostanes exhibited a dual role by stabilizing Bet v 1 and inhibiting cathepsin protease activity. Conclusion Bet v 1 can serve as a transporter of pollen‐derived, bioactive compounds. When carried to the endolysosome, such compounds can modulate the proteolytic activity, including its processing by cysteine cathepsins. We unveil a paradigm shift from an allergen‐centered view to a more systemic view that includes the host endolysosomal enzymes.
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Affiliation(s)
- Wai Tuck Soh
- Department of Biosciences University of Salzburg Salzburg Austria
| | - Lorenz Aglas
- Department of Biosciences University of Salzburg Salzburg Austria
| | - Geoffrey A. Mueller
- Department of Health and Human Services, Genome Integrity and Structural Biology Laboratory National Institute of Environmental Health Sciences, National Institutes of Health Research Triangle Park North Carolina
| | - Stefanie Gilles
- Institute of Environmental Medicine UNIKA‐T, Technical University Munich and Helmholtz Zentrum München Augsburg Germany
- Christine‐Kühne‐Center for Allergy Research and Education (CK CARE) Davos Switzerland
| | - Richard Weiss
- Department of Biosciences University of Salzburg Salzburg Austria
| | | | - Sara Huber
- Department of Biosciences University of Salzburg Salzburg Austria
| | - Tamara Scheidt
- Department of Biosciences University of Salzburg Salzburg Austria
| | - Peter M. Thompson
- Department of Health and Human Services, Genome Integrity and Structural Biology Laboratory National Institute of Environmental Health Sciences, National Institutes of Health Research Triangle Park North Carolina
| | - Peter Briza
- Department of Biosciences University of Salzburg Salzburg Austria
| | - Robert E. London
- Department of Health and Human Services, Genome Integrity and Structural Biology Laboratory National Institute of Environmental Health Sciences, National Institutes of Health Research Triangle Park North Carolina
| | - Claudia Traidl‐Hoffmann
- Institute of Environmental Medicine UNIKA‐T, Technical University Munich and Helmholtz Zentrum München Augsburg Germany
- Christine‐Kühne‐Center for Allergy Research and Education (CK CARE) Davos Switzerland
| | - Chiara Cabrele
- Department of Biosciences University of Salzburg Salzburg Austria
| | | | - Fatima Ferreira
- Department of Biosciences University of Salzburg Salzburg Austria
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Salazar ML, Jiménez JM, Villar J, Rivera M, Báez M, Manubens A, Becker MI. N-Glycosylation of mollusk hemocyanins contributes to their structural stability and immunomodulatory properties in mammals. J Biol Chem 2019; 294:19546-19564. [PMID: 31719148 PMCID: PMC6926458 DOI: 10.1074/jbc.ra119.009525] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/29/2019] [Indexed: 12/16/2022] Open
Abstract
Hemocyanins are widely used as carriers, adjuvants, and nonspecific immunostimulants in cancer because they promote Th1 immunity in mammals. Hemocyanins also interact with glycan-recognizing innate immune receptors on antigen-presenting cells, such as the C-type lectin immune receptors mannose receptor (MR), macrophage galactose lectin (MGL), and the Toll-like receptors (TLRs), stimulating proinflammatory cytokine secretion. However, the role of N-linked oligosaccharides on the structural and immunological properties of hemocyanin is unclear. Mollusk hemocyanins, such as Concholepas concholepas (CCH), Fissurella latimarginata (FLH), and Megathura crenulata (KLH), are oligomeric glycoproteins with complex dodecameric quaternary structures and heterogeneous glycosylation patterns, primarily consisting of mannose-rich N-glycans. Here, we report that enzyme-catalyzed N-deglycosylation of CCH, FLH, and KLH disrupts their quaternary structure and impairs their immunogenic effects. Biochemical analyses revealed that the deglycosylation does not change hemocyanin secondary structure but alters their refolding mechanism and dodecameric structure. Immunochemical analyses indicated decreased binding of N-deglycosylated hemocyanins to the MR and MGL receptors and TLR4 and reduced endocytosis concomitant with an impaired production of tumor necrosis factor α, and interleukins 6 and 12 (IL-6 and IL-12p40, respectively) in macrophages. Evaluating the function of N-deglycosylated hemocyanins in the humoral immune response and their nonspecific antitumor effects in the B16F10 melanoma model, we found that compared with native hemocyanins N-deglycosylated hemocyanins elicited reduced antibody titers, as well as partially diminished antitumor effects and altered carrier activities. In conclusion, the glycan content of hemocyanins is, among other structural characteristics, critically required for their immunological activities and should be considered in biomedical applications.
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Affiliation(s)
- Michelle L Salazar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - José M Jiménez
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - Javiera Villar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - Maira Rivera
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile
| | - Mauricio Báez
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile
| | - Augusto Manubens
- Departamento de Investigación y Desarrollo, Biosonda Corp., Santiago 7750269, Chile
| | - María Inés Becker
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile .,Departamento de Investigación y Desarrollo, Biosonda Corp., Santiago 7750269, Chile
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Do DC, Mu J, Ke X, Sachdeva K, Qin Z, Wan M, Ishmael FT, Gao P. miR-511-3p protects against cockroach allergen-induced lung inflammation by antagonizing CCL2. JCI Insight 2019; 4:126832. [PMID: 31536479 DOI: 10.1172/jci.insight.126832] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 09/12/2019] [Indexed: 02/06/2023] Open
Abstract
miR-511-3p, encoded by CD206/Mrc1, was demonstrated to reduce allergic inflammation and promote alternative (M2) macrophage polarization. Here, we sought to elucidate the fundamental mechanism by which miR-511-3p attenuates allergic inflammation and promotes macrophage polarization. Compared with WT mice, the allergen-challenged Mrc1-/- mice showed increased airway hyperresponsiveness (AHR) and inflammation. However, this increased AHR and inflammation were significantly attenuated when these mice were pretransduced with adeno-associated virus-miR-511-3p (AAV-miR-511-3p). Gene expression profiling of macrophages identified Ccl2 as one of the major genes that was highly expressed in M2 macrophages but antagonized by miR-511-3p. The interaction between miR-511-3p and Ccl2 was confirmed by in silico analysis and mRNA-miR pulldown assay. Further evidence for the inhibition of Ccl2 by miR-511-3p was given by reduced levels of Ccl2 in supernatants of miR-511-3p-transduced macrophages and in bronchoalveolar lavage fluids of AAV-miR-511-3p-infected Mrc1-/- mice. Mechanistically, we demonstrated that Ccl2 promotes M1 macrophage polarization by activating RhoA signaling through Ccr2. The interaction between Ccr2 and RhoA was also supported by coimmunoprecipitation assay. Importantly, inhibition of RhoA signaling suppressed cockroach allergen-induced AHR and lung inflammation. These findings suggest a potentially novel mechanism by which miR-511-3p regulates allergic inflammation and macrophage polarization by targeting Ccl2 and its downstream Ccr2/RhoA axis.
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Affiliation(s)
- Danh C Do
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jie Mu
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Anesthesiology, West China School of Medicine, Sichuan University, Chengdu, China
| | - Xia Ke
- Department of Otorhinolaryngology, First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Karan Sachdeva
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Zili Qin
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mei Wan
- Department of Orthopedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Faoud T Ishmael
- Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, Pennsylvania State University Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Peisong Gao
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Resende RDO, Ynoue LH, Miranda JS, de Almeida KC, Silva DADO, Sopelete MC, Alves R, Gennari-Cardoso ML, Taketomi EA. IgE, IgG1, and IgG4 Reactivity to Dermatophagoides pteronyssinus Glycosylated Extract in Allergic Patients. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9840890. [PMID: 31467923 PMCID: PMC6699324 DOI: 10.1155/2019/9840890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/19/2019] [Accepted: 07/01/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND House dust mites are important allergen sources and some of these allergenic proteins may contain carbohydrate moieties, which are able to be isolated using lectins, as Concanavalin A (ConA). This study aimed to investigate allergenicity (IgE) and antigenicity (IgG1 and IgG4) of ConA-unbound and ConA-bound Dermatophagoides pteronyssinus (Dpt) crude extracts using sera of mite-allergic patients as well as inhibition capacity of antibody binding. MATERIAL AND METHODS We obtained mannose-enriched and mannose-depleted fractions from Dpt by ConA affinity chromatography. Both ConA-bound and ConA-unbound fractions were evaluated by ELISA and Western Blotting for specific IgE, IgG1, and IgG4 reactivity with sera obtained from 95 mite-allergic patients (DP+) and 92 nonallergic (NA) subjects. Inhibition ELISA was used to assess cross-reactivity between Dpt extract and its fractions. RESULTS Among the DP+ patients, no difference was found between ConA-unbound and ConA-bound fractions regarding the levels of specific IgE, IgG1, and IgG4. Nonallergic subjects had the same levels of specific IgG1 to both ConA-unbound and ConA-bound fractions, although for specific IgG4, values were higher for ConA-bound. A positive correlation was found among specific IgE, IgG1, and IgG4 levels when Dpt was compared to ConA-unbound and ConA-bound fractions. Recognition of crude Dpt by IgE, IgG1, and IgG4 was highly inhibited by ConA-unbound and ConA-bound fractions. Western Blotting revealed a broad spectrum of bands ranging from 14 to 116 kDa recognized by specific IgE and IgG4. However, IgG1 reached higher frequency values on high molecular weight polypeptides. CONCLUSION ConA-unbound and ConA-bound fractions derived from D. pteronyssinus crude extract revealed important components involved in the IgE recognition in allergic patients as well as IgG1 and/or IgG4 in allergic and healthy subjects.
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Affiliation(s)
| | - Leandro Hideki Ynoue
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
| | - Juliana Silva Miranda
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
| | - Karine Cristine de Almeida
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
| | | | - Monica Camargo Sopelete
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
| | - Ronaldo Alves
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
| | | | - Ernesto Akio Taketomi
- Laboratory of Allergy and Clinical Immunology, Biomedical Science Institute, Federal University of Uberlândia, Uberlândia, Brazil
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Rupa P, Mine Y. Comparison of Glycated Ovalbumin-Monosaccharides in the Attenuation of Ovalbumin-Induced Allergic Response in a BALB/C Mouse Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8138-8148. [PMID: 31294563 DOI: 10.1021/acs.jafc.9b02132] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of the present study was to compare various glycated ovalbumin (OVA)-monosaccharides, including OVA-mannose (Man), -glucose, -ribose, and -fructose, in the attenuation of OVA-induced allergic response in a BALB/C mouse model and the potential mechanisms of immunological modulation. The glycated OVA forms were prepared by Maillard reactions. OVA-Man significantly reduced the frequency of allergic signs. Mouse mast cell protease enzyme concentration was significantly reduced in the OVA-Man group (549.80 ± 84.67 ng/mL, p < 0.05). The OVA-Man group also had a lower histamine concentration (30.96 ± 1.12 ng/mL) as compared with the positive control OVA group (44.43 ± 0.71 ng/mL, p < 0.05). Both specific IgG and IgE were significantly reduced in the OVA-Man-treated group (p < 0.05). The OVA-Man group exhibited decreased concentrations of IL-4 (67.98 ± 3.11 pg/mL) and IL-17 (67.98 ± 3.11 pg/mL) and an increased concentration of IL-12 (336.70 ± 18.69 pg/mL, p < 0.05) compared with the positive control. Mannosylation played a vital role in allergen recognition, implicating deleterious downstream Th2 cell activation, cytokine secretion, and IgE production. This result indicates that different glycans target specific DC receptors, and differential DC processing, antigen presentation, and T cell response leads to altered variation in allergic response. OVA-Man exhibited minimal DC internalization, DC processing, MHC antigen presentation, and antigen-specific T cell activation, resulting in an attenuated allergic response and validating its efficacy as a potential immunotherapeutic candidate to treat egg allergy.
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Affiliation(s)
- Prithy Rupa
- Department of Food Science , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Yoshinori Mine
- Department of Food Science , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
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Jiménez JM, Salazar ML, Arancibia S, Villar J, Salazar F, Brown GD, Lavelle EC, Martínez-Pomares L, Ortiz-Quintero J, Lavandero S, Manubens A, Becker MI. TLR4, but Neither Dectin-1 nor Dectin-2, Participates in the Mollusk Hemocyanin-Induced Proinflammatory Effects in Antigen-Presenting Cells From Mammals. Front Immunol 2019; 10:1136. [PMID: 31214162 PMCID: PMC6554540 DOI: 10.3389/fimmu.2019.01136] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/07/2019] [Indexed: 11/18/2022] Open
Abstract
Mollusk hemocyanins have biomedical uses as carriers/adjuvants and nonspecific immunostimulants with beneficial clinical outcomes by triggering the production of proinflammatory cytokines in antigen-presenting cells (APCs) and driving immune responses toward type 1 T helper (Th1) polarization. Significant structural features of hemocyanins as a model antigen are their glycosylation patterns. Indeed, hemocyanins have a multivalent nature as highly mannosylated antigens. We have previously shown that hemocyanins are internalized by APCs through receptor-mediated endocytosis with proteins that contain C-type lectin domains, such as mannose receptor (MR). However, the contribution of other innate immune receptors to the proinflammatory signaling pathway triggered by hemocyanins is unknown. Thus, we studied the roles of Dectin-1, Dectin-2, and Toll-like receptor 4 (TLR4) in the hemocyanin activation of murine APCs, both in dendritic cells (DCs) and macrophages, using hemocyanins from Megathura crenulata (KLH), Concholepas concholepas (CCH) and Fissurella latimarginata (FLH). The results showed that these hemocyanins bound to chimeric Dectin-1 and Dectin-2 receptors in vitro; which significantly decreased when the glycoproteins were deglycosylated. However, hemocyanin-induced proinflammatory effects in APCs from Dectin-1 knock-out (KO) and Dectin-2 KO mice were independent of both receptors. Moreover, when wild-type APCs were cultured in the presence of hemocyanins, phosphorylation of Syk kinase was not detected. We further showed that KLH and FLH induced ERK1/2 phosphorylation, a key event involved in the TLR signaling pathway. We confirmed a glycan-dependent binding of hemocyanins to chimeric TLR4 in vitro. Moreover, DCs from mice deficient for MyD88-adapter-like (Mal), a downstream adapter molecule of TLR4, were partially activated by FLH, suggesting a role of the TLR pathway in hemocyanin recognition to activate APCs. The participation of TLR4 was confirmed through a decrease in IL-12p40 and IL-6 secretion induced by FLH when a TLR4 blocking antibody was used; a reduction was also observed in DCs from C3H/HeJ mice, a mouse strain with a nonfunctional mutation for this receptor. Moreover, IL-6 secretion induced by FLH was abolished in macrophages deficient for TLR4. Our data showed the involvement of TLR4 in the hemocyanin-mediated proinflammatory response in APCs, which could cooperate with MR in innate immune recognition of these glycoproteins.
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Affiliation(s)
- José M. Jiménez
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Michelle L. Salazar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Sergio Arancibia
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Javiera Villar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Fabián Salazar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
- Aberdeen Fungal Group, Medical Research Council Centre for Medical Mycology, University of Aberdeen, Aberdeen, United Kingdom
| | - Gordon D. Brown
- Aberdeen Fungal Group, Medical Research Council Centre for Medical Mycology, University of Aberdeen, Aberdeen, United Kingdom
| | - Ed C. Lavelle
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | | | - Jafet Ortiz-Quintero
- Facultad de Ciencias Químicas y Farmacéuticas, Facultad de Medicina, Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Facultad de Ciencias Químicas y Farmacéuticas, Facultad de Medicina, Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile
| | | | - María Inés Becker
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
- Biosonda Corporation, Santiago, Chile
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Awuah D, Alobaid M, Latif A, Salazar F, Emes RD, Ghaemmaghami AM. The Cross-Talk between miR-511-3p and C-Type Lectin Receptors on Dendritic Cells Affects Dendritic Cell Function. THE JOURNAL OF IMMUNOLOGY 2019; 203:148-157. [PMID: 31118225 DOI: 10.4049/jimmunol.1801108] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 04/29/2019] [Indexed: 12/20/2022]
Abstract
MicroRNAs are small, noncoding RNAs that function as posttranscriptional modulators of gene expression by binding target mRNAs and inhibiting translation. They are therefore crucial regulators of several biological as well as immunological events. Recently, miR-511-3p has been implicated in the development and differentiation of APCs, such as dendritic cells (DCs), and regulating several human diseases. Interestingly, miR-511-3p is embedded within the human MRC1 gene that encodes the mannose receptor. In this study, we sought to examine the impact of miR-511-3p up- or downregulation on human DC surface phenotype, cytokine profile, immunogenicity (using IDO activity as a surrogate), and downstream T cell polarization. Using gene silencing and a selection of microRNA mimics, we could successfully suppress or induce the expression of miR-511-3p in DCs. Consequently, we show for the first time, to our knowledge, that inhibition and/or overexpression of miR-511-3p has opposing effects on the expression levels of two key C-type lectin receptors, namely the mannose receptor and DC-specific ICAM 3 nonintegrin at protein and mRNA levels, thereby affecting C-type lectin receptor-induced modulation of IDO activity in DCs. Furthermore, we show that downregulation of miR-511-3p drives an anti-inflammatory DC response characterized by IL-10 production. Interestingly, the miR-511-3plow DCs also promoted IL-4 secretion and suppressed IL-17 in cocultures with autologous T cells. Together, our data highlight the potential role of miR-511 in regulating DC function and downstream events leading to Th polarization and immune modulation.
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Affiliation(s)
- Dennis Awuah
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Meshal Alobaid
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Arsalan Latif
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Fabián Salazar
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Richard D Emes
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire LE12 5NT, United Kingdom; and.,Advanced Data Analysis Centre, University of Nottingham, Leicestershire LE12 5NT, United Kingdom
| | - Amir M Ghaemmaghami
- Division of Immunology, School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom;
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Kumar S, Jeong Y, Ashraf MU, Bae YS. Dendritic Cell-Mediated Th2 Immunity and Immune Disorders. Int J Mol Sci 2019; 20:ijms20092159. [PMID: 31052382 PMCID: PMC6539046 DOI: 10.3390/ijms20092159] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells (DCs) are the professional antigen-presenting cells that recognize and present antigens to naïve T cells to induce antigen-specific adaptive immunity. Among the T-cell subsets, T helper type 2 (Th2) cells produce the humoral immune responses required for protection against helminthic disease by activating B cells. DCs induce a Th2 immune response at a certain immune environment. Basophil, eosinophil, mast cells, and type 2 innate lymphoid cells also induce Th2 immunity. However, in the case of DCs, controversy remains regarding which subsets of DCs induce Th2 immunity, which genes in DCs are directly or indirectly involved in inducing Th2 immunity, and the detailed mechanisms underlying induction, regulation, or maintenance of the DC-mediated Th2 immunity against allergic environments and parasite infection. A recent study has shown that a genetic defect in DCs causes an enhanced Th2 immunity leading to severe atopic dermatitis. We summarize the Th2 immune-inducing DC subsets, the genetic and environmental factors involved in DC-mediated Th2 immunity, and current therapeutic approaches for Th2-mediated immune disorders. This review is to provide an improved understanding of DC-mediated Th2 immunity and Th1/Th2 immune balancing, leading to control over their adverse consequences.
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Affiliation(s)
- Sunil Kumar
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Yideul Jeong
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Muhammad Umer Ashraf
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
| | - Yong-Soo Bae
- Science Research Center (SRC) for Immune Research on Non-Lymphoid Organ (CIRNO), Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
- Department of Biological Sciences, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea.
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45
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Mannosylated Nanoparticles for Oral Immunotherapy in a Murine Model of Peanut Allergy. J Pharm Sci 2019; 108:2421-2429. [PMID: 30849462 DOI: 10.1016/j.xphs.2019.02.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/20/2019] [Accepted: 02/27/2019] [Indexed: 11/23/2022]
Abstract
Peanut allergy is one of the most prevalent and severe of food allergies with no available cure. The aim of this work was to evaluate the potential of an oral immunotherapy based on the use of a roasted peanut extract encapsulated in nanoparticles with immunoadjuvant properties. For this, a polymer conjugate formed by the covalent binding of mannosamine to the copolymer of methyl vinyl ether and maleic anhydride was first synthetized and characterized. Then, the conjugate was used to prepare nanoparticles with an important capability to diffuse through the mucus layer and reach, in a large extent, the intestinal epithelium, including Peyer's patches. Their immunotherapeutic potential was evaluated in a model of presensitized CD1 mice to peanut. After completing therapy, mice underwent an intraperitoneal challenge with peanut extract. Nanoparticle-treatment was associated with both less serious anaphylaxis symptoms and higher survival rates than control, confirming the protective effect of this formulation against the challenge.
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TOSA N, YOSHIMATSU K, TAKAHASHI M, ARIKAWA J. Comparison of immune response in mice sensitized to an animal allergen, Can f 1, and to a food allergen, ovalbumin. Biomed Res 2019; 40:9-15. [DOI: 10.2220/biomedres.40.9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Noriko TOSA
- Institute for Animal Experimentation, Hokkaido University
| | - Kumiko YOSHIMATSU
- Department of Microbiology, Faculty of Medicine, Hokkaido University
| | - Motoko TAKAHASHI
- Department of Biochemistry, Sapporo Medical University School of Medicine
| | - Jiro ARIKAWA
- Institute for Animal Experimentation, Hokkaido University
- Department of Microbiology, Faculty of Medicine, Hokkaido University
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47
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Arjunan P, Meghil MM, Pi W, Xu J, Lang L, El-Awady A, Sullivan W, Rajendran M, Rabelo MS, Wang T, Tawfik OK, Kunde-Ramamoorthy G, Singh N, Muthusamy T, Susin C, Teng Y, Arce RM, Cutler CW. Oral Pathobiont Activates Anti-Apoptotic Pathway, Promoting both Immune Suppression and Oncogenic Cell Proliferation. Sci Rep 2018; 8:16607. [PMID: 30413788 PMCID: PMC6226501 DOI: 10.1038/s41598-018-35126-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/30/2018] [Indexed: 12/25/2022] Open
Abstract
Chronic periodontitis (CP) is a microbial dysbiotic disease linked to increased risk of oral squamous cell carcinomas (OSCCs). To address the underlying mechanisms, mouse and human cell infection models and human biopsy samples were employed. We show that the ‘keystone’ pathogen Porphyromonas gingivalis, disrupts immune surveillance by generating myeloid-derived dendritic suppressor cells (MDDSCs) from monocytes. MDDSCs inhibit CTLs and induce FOXP3 + Tregs through an anti-apoptotic pathway. This pathway, involving pAKT1, pFOXO1, FOXP3, IDO1 and BIM, is activated in humans with CP and in mice orally infected with Mfa1 expressing P. gingivalis strains. Mechanistically, activation of this pathway, demonstrating FOXP3 as a direct FOXO1-target gene, was demonstrated by ChIP-assay in human CP gingiva. Expression of oncogenic but not tumor suppressor markers is consistent with tumor cell proliferation demonstrated in OSCC-P. gingivalis cocultures. Importantly, FimA + P. gingivalis strain MFI invades OSCCs, inducing inflammatory/angiogenic/oncogenic proteins stimulating OSCCs proliferation through CXCR4. Inhibition of CXCR4 abolished Pg-MFI-induced OSCCs proliferation and reduced expression of oncogenic proteins SDF-1/CXCR4, plus pAKT1-pFOXO1. Conclusively, P. gingivalis, through Mfa1 and FimA fimbriae, promotes immunosuppression and oncogenic cell proliferation, respectively, through a two-hit receptor-ligand process involving DC-SIGN+hi/CXCR4+hi, activating a pAKT+hipFOXO1+hiBIM−lowFOXP3+hi and IDO+hi- driven pathway, likely to impact the prognosis of oral cancers in patients with periodontitis.
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Affiliation(s)
- Pachiappan Arjunan
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America.
| | - Mohamed M Meghil
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America.,Department of Oral Biology, Augusta University, Augusta, Georgia, United States of America
| | - Wenhu Pi
- Department of Radiation Oncology, Indiana University, Indianapolis, Indiana, United States of America
| | - Jinxian Xu
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Liwei Lang
- Department of Oral Biology, Augusta University, Augusta, Georgia, United States of America
| | - Ahmed El-Awady
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - William Sullivan
- Department of Energy, Joint Genome Institute, California, United States of America
| | - Mythilypriya Rajendran
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Mariana Sousa Rabelo
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America.,Department of Periodontics, University of São Paulo, Sao Paulo, Brazil
| | - Tong Wang
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Omnia K Tawfik
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | | | - Nagendra Singh
- Department of Biochemistry & Molecular Biology, Cancer Research Center, Augusta University, Augusta, Georgia, United States of America
| | - Thangaraju Muthusamy
- Department of Biochemistry & Molecular Biology, Cancer Research Center, Augusta University, Augusta, Georgia, United States of America
| | - Cristiano Susin
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Yong Teng
- Department of Oral Biology, Augusta University, Augusta, Georgia, United States of America
| | - Roger M Arce
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Christopher W Cutler
- Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, Georgia, United States of America.
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48
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α-Gal on the protein surface affects uptake and degradation in immature monocyte derived dendritic cells. Sci Rep 2018; 8:12684. [PMID: 30139949 PMCID: PMC6107510 DOI: 10.1038/s41598-018-30887-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/24/2018] [Indexed: 02/08/2023] Open
Abstract
Red meat allergy is characterized by an IgE response against the carbohydrate galactose-α-1,3-galactose (α-Gal), which is abundantly expressed on glycoproteins from non-primate mammals. The mechanisms of how α-Gal is processed and presented to the immune system to initiate an allergic reaction are still unknown. The aim of this study was to reveal whether the presence of α-Gal epitopes on the protein surface influence antigen uptake and processing in immature monocyte-derived dendritic cells (iMDDCs). Immature MDDCs were prepared from healthy blood donors and red meat allergic patients. We found an increased internalization of α-Gal carrying proteins over time in iMDDCs by flow cytometric analysis, which was independent of the donor allergic status. The uptake of α-Gal carrying proteins was significantly higher than the uptake of non-α-Gal carrying proteins. Confocal microscopy revealed α-Gal carrying proteins scattered around the cytoplasm in most iMDDCs while detection of proteins not carrying α-Gal was negligible. Fluorescent detection of protein on SDS-PAGE showed that degradation of α-Gal carrying proteins was slower than degradation of non-α-Gal carrying proteins. Thus, the presence of α-Gal on the protein surface affects both uptake and degradation of the protein, and the results add new knowledge of α-Gal as a clinically relevant food allergen.
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49
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Butvilovskaya VI, Smoldovskaya OV, Feyzkhanova GU, Filippova MA, Pavlushkina L, Voloshin SA, Rubina AY. Modification of Anti-Glycan IgG and IgM Profiles in Allergic Inflammation. Mol Biol 2018. [DOI: 10.1134/s0026893318040039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Cabanillas B, Maleki SJ, Cheng H, Novak N. Differences in the Uptake of Ara h 3 from Raw and Roasted Peanut by Monocyte-Derived Dendritic Cells. Int Arch Allergy Immunol 2018; 177:35-39. [PMID: 29879702 DOI: 10.1159/000489277] [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: 04/13/2018] [Accepted: 04/13/2018] [Indexed: 01/13/2023] Open
Abstract
Roasting has been implicated in the increase of peanut allergenicity due to the chemical reactions that occur during the process. However, this increase is not fully understood, and little information is available regarding the role of roasted peanut allergens in the initial phase of allergy, where dendritic cells (DCs) play a key role. We sought to analyze differences in the internalization of Ara h 3 from raw and roasted peanut by immature monocyte-derived DCs (MDDCs) and the implication of the mannose receptor in the uptake. Ara h 3 was purified from raw and roasted peanut (Ara h 3-raw and Ara h 3-roas) and labeled with a fluorescent dye. The labeled allergens were added to MDDCs obtained from 7 donors and internalization was analyzed after 10, 30, and 120 min by flow cytometry. In parallel, mannan, which blocks the mannose receptor, was added 30 min before adding the labeled allergens. Results showed that the internalization of Ara h 3-roas by MDDCs was significantly increased at every time point. However, the increase in the internalization of Ara h 3-raw was only significant after 2 h of incubation. Ara h 3-roas had an enhanced capacity to be internalized by MDDCs in comparison with Ara h 3-raw at every time point. Blocking the mannose receptor decreased the internalization of Ara h 3-roas but not Ara h 3-raw. In conclusion, the internalization of Ara h 3-roas by the MDDCs is enhanced when compared to Ara h 3-raw, and the mannose receptor might be implicated in this enhancement.
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Affiliation(s)
- Beatriz Cabanillas
- Department of Dermatology and Allergy, University of Bonn Medical Center, Bonn, Germany
| | - Soheila J Maleki
- U.S. Department of Agriculture, Agriculture Research Service, Southern Regional Research Center, New Orleans, Louisiana, USA
| | - Hsiaopo Cheng
- U.S. Department of Agriculture, Agriculture Research Service, Southern Regional Research Center, New Orleans, Louisiana, USA
| | - Natalija Novak
- Department of Dermatology and Allergy, University of Bonn Medical Center, Bonn, Germany
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