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Aimulajiang K, Chu W, Liao S, Wen Z, He R, Lu M, Xu L, Song X, Li X, Yan R. Succinate coenzyme A ligase β-like protein from Trichinella spiralis is a potential therapeutic molecule for allergic asthma. Immun Inflamm Dis 2024; 12:e1321. [PMID: 38888451 PMCID: PMC11184933 DOI: 10.1002/iid3.1321] [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: 07/25/2023] [Revised: 06/04/2024] [Accepted: 06/07/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND For decades, studies have demonstrated the anti-inflammatory potential of proteins secreted by helminths in allergies and asthma. Previous studies have demonstrated the immunomodulatory capabilities of Succinate Coenzyme A ligase beta-like protein (SUCLA-β) derived from Trichinella spiralis, a crucial excretory product of this parasite. OBJECTIVE To explore the therapeutic potential of SUCLA-β in alleviating and controlling ovalbumin (OVA)-induced allergic asthma, as well as its influence on host immune modulation. METHODS In this research, we utilized the rTs-SUCLA-β protein derived from T. spiralis to investigate its potential in mitigating airway inflammation in a murine model of asthma induced by OVA sensitization/stimulation, both pre- and post-challenge. The treatment's efficacy was assessed by quantifying the extent of inflammation in the lungs. RESULTS Treatment with rTs-SUCLA-β demonstrated efficacy in ameliorating OVA-induced airway inflammation, as evidenced by a reduction in eosinophil infiltration, levels of OVA-specific Immunoglobulin E, interferon-γ, interleukin (IL)-9, and IL-17A, along with an elevation in IL-10. The equilibrium between Th17 and Treg cells plays a pivotal role in modulating the abundance of inflammatory cells within the organism, thereby ameliorating inflammation and alleviating symptoms associated with allergic asthma. CONCLUSIONS AND CLINICAL RELEVANCE Our data revealed that T. spiralis-derived Ts-SUCLA-β protein may inhibit the allergic airway inflammation by regulating host immune responses.
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Affiliation(s)
- Kalibixiati Aimulajiang
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Medicine InstituteThe First Affiliated Hospital of Xinjiang Medical UniversityUrumqiXinjiangP. R. China
| | - Wen Chu
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
| | - Shuyi Liao
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
- Changsha Animal and Plant Disease Control CenterChangshaHunanP. R. China
| | - Zhaohai Wen
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
- Department of Veterinary Medicine, College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiangP. R. China
| | - Rongdong He
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Medicine InstituteThe First Affiliated Hospital of Xinjiang Medical UniversityUrumqiXinjiangP. R. China
| | - Mingmin Lu
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
| | - Lixin Xu
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
| | - Xiaokai Song
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
| | - Xiangrui Li
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
| | - Ruofeng Yan
- Laboratory of Animal Health and Food Safety, MOE Joint International Research, College of Veterinary MedicineNanjing Agricultural UniversityNanjingJiangsuP. R. China
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Shi W, Xu Q, Liu Y, Hao Z, Liang Y, Vallée I, You X, Liu M, Liu X, Xu N. Immunosuppressive Ability of Trichinella spiralis Adults Can Ameliorate Type 2 Inflammation in a Murine Allergy Model. J Infect Dis 2024; 229:1215-1228. [PMID: 38016013 PMCID: PMC11011206 DOI: 10.1093/infdis/jiad518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/05/2023] [Accepted: 11/21/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND There is an increase in the global incidence of allergies. The hygiene hypothesis and the old friend hypothesis reveal that helminths are associated with the prevalence of allergic diseases. The therapeutic potential of Trichinella spiralis is recognized; however, the stage at which it exerts its immunomodulatory effect is unclear. METHODS We evaluated the differentiation of bone marrow-derived macrophages stimulated with T spiralis excretory-secretory products. Based on an ovalbumin-induced murine model, T spiralis was introduced during 3 allergy phases. Cytokine levels and immune cell subsets in the lung, spleen, and peritoneal cavity were assessed. RESULTS We found that T spiralis infection reduced lung inflammation, increased anti-inflammatory cytokines, and decreased Th2 cytokines and alarms. Recruitment of eosinophils, CD11b+ dendritic cells, and interstitial macrophages to the lung was significantly suppressed, whereas Treg cells and alternatively activated macrophages increased in T spiralis infection groups vs the ovalbumin group. Notably, when T spiralis was infected prior to ovalbumin challenge, intestinal adults promoted proportions of CD103+ dendritic cells and alveolar macrophages. CONCLUSIONS T spiralis strongly suppressed type 2 inflammation, and adults maintained lung immune homeostasis.
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Affiliation(s)
- Wenjie Shi
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
| | - Qinwei Xu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital of Shandong University, Qingdao
| | - Yan Liu
- College of Public Health, Jilin Medical University, China
| | - Zhili Hao
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
| | - Yue Liang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
| | - Isabelle Vallée
- Unité Mixte de Recherche Biologie moléculaire et Immunologie Parasitaire, Anses, Institut national de recherche pour l'agriculture, l'alimentation et l'environnement, Laboratoire de Santé Animale, Ecole Nationale Vétérinaire d’Alfort, Maisons-Alfort, France
| | - Xihuo You
- Beijing Agrichina Pharmaceutical Co, Ltd, Beijing, China
| | - Mingyuan Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
| | - Xiaolei Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
| | - Ning Xu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun
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Kang SA, Yu HS. Anti-obesity effects by parasitic nematode ( Trichinella spiralis) total lysates. Front Cell Infect Microbiol 2024; 13:1285584. [PMID: 38259965 PMCID: PMC10800963 DOI: 10.3389/fcimb.2023.1285584] [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: 08/30/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Background Obesity is an inducible factor for the cause of chronic diseases and is described by an increase in the size and number of adipocytes that differentiate from precursor cells (preadipocytes). Parasitic helminths are the strongest natural trigger of type 2 immune system, and several studies have showed that helminth infections are inversely correlated with metabolic syndromes. Methodology/Principal findings To investigate whether helminth-derived molecules have therapeutic effects on high-fat diet (HFD)-induced obesity, we isolated total lysates from Trichinella spiralis muscle larvae. We then checked the anti-obesity effect after intraperitoneal administration and intraoral administration of total lysate from T. spiralis muscle larvae in a diet-induced obesity model. T. spiralis total lysates protect against obesity by inhibiting the proinflammatory response and/or enhancing M2 macrophages. In addition, we determined the effects of total lysates from T. spiralis muscle larvae on anti-obesity activities in 3T3-L1 preadipocytes by investigating the expression levels of key adipogenic regulators, including peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT-enhancer-binding protein alpha (C/EBPα) and adipocyte protein 2 (aP2). Oil Red O staining showed that the total lysates from T. spiralis muscle larvae decreased the differentiation of 3T3-L1 preadipocytes by decreasing the number of lipid droplets. In addition, the production levels of proinflammatory cytokines IL-1β, IL-6, IFN-γ and TNF-α were examined by enzyme-linked immunosorbent assay (ELISA). T. spiralis total lysates decreased intracellular lipid accumulation and suppressed the expression levels of PPARγ, C/EBPα and aP2. Conclusion/Significance These results show that T. spiralis total lysate significantly suppresses the symptoms of obesity in a diet- induced obesity model and 3T3-L1 cell differentiation and suggest that it has potential for novel anti-obesity therapeutics.
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Affiliation(s)
- Shin Ae Kang
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Hak Sun Yu
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
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Tagkareli S, Salagianni M, Galani I, Manioudaki M, Pavlos E, Thanopoulou K, Andreakos E. CD103 integrin identifies a high IL-10-producing FoxP3 + regulatory T-cell population suppressing allergic airway inflammation. Allergy 2022; 77:1150-1164. [PMID: 34658046 DOI: 10.1111/all.15144] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/10/2021] [Accepted: 10/03/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Although FoxP3+ regulatory T (Treg) cells constitute a highly heterogeneous population, with different regulatory potential depending on the disease context, distinct subsets or phenotypes remain poorly defined. This hampers the development of immunotherapy for allergic and autoimmune disorders. The present study aimed at characterizing distinct FoxP3+ Treg subpopulations involved in the suppression of Th2-mediated allergic inflammation in the lung. METHODS We used an established mouse model of allergic airway disease based on ovalbumin sensitization and challenge to analyze FoxP3+ Tregs during the induction and resolution of inflammation, and identify markers that distinguish their most suppressive phenotypes. We also developed a new knock-in mouse model (Foxp3cre Cd103dtr ) enabling the specific ablation of CD103+ FoxP3+ Tregs for functional studies. RESULTS We found that during resolution of allergic airway inflammation in mice >50% of FoxP3+ Treg cells expressed the integrin CD103 which marks FoxP3+ Treg cells of high IL-10 production, increased expression of immunoregulatory molecules such as KLRG1, ICOS and CD127, and enhanced suppressive capacity for Th2-mediated inflammatory responses. CD103+ FoxP3+ Tregs were essential for keeping allergic inflammation under control as their specific depletion in Foxp3cre Cd103dtr mice lead to severe alveocapillary damage, eosinophilic pneumonia, and markedly reduced lifespan of the animals. Conversely, adoptive transfer of CD103+ FoxP3+ Tregs effectively treated disease, attenuating Th2 responses and allergic inflammation in an IL-10-dependent manner. CONCLUSIONS Our study identifies a novel regulatory T-cell population, defined by CD103 expression, programmed to prevent exuberant type 2 inflammation and keep homeostasis in the respiratory tract under control. This has important therapeutic implications.
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Affiliation(s)
- Sofia Tagkareli
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Maria Salagianni
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Ioanna‐Evdokia Galani
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Maria Manioudaki
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Eleftherios Pavlos
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Kalliopi Thanopoulou
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
| | - Evangelos Andreakos
- Laboratory of Immunobiology Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of Athens Athens Greece
- Airway Disease Infection Section National Heart and Lung InstituteImperial College London London UK
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Shi W, Xu N, Wang X, Vallée I, Liu M, Liu X. Helminth Therapy for Immune-Mediated Inflammatory Diseases: Current and Future Perspectives. J Inflamm Res 2022; 15:475-491. [PMID: 35087284 PMCID: PMC8789313 DOI: 10.2147/jir.s348079] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/11/2022] [Indexed: 12/17/2022] Open
Affiliation(s)
- Wenjie Shi
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, 130062, People’s Republic of China
| | - Ning Xu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, 130062, People’s Republic of China
| | - Xuelin Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, 130062, People’s Republic of China
| | - Isabelle Vallée
- UMR BIPAR, Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, Laboratoire de Santé Animale, Maisons-Alfort, France
| | - Mingyuan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, 130062, People’s Republic of China
| | - Xiaolei Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, 130062, People’s Republic of China
- Correspondence: Xiaolei Liu; Mingyuan Liu, Tel +86-15943092280; +86-13019125996, Email ;
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Choi JH, Kim JY, Yi MH, Kim M, Yong TS. Anisakis pegreffii Extract Induces Airway Inflammation with Airway Remodeling in a Murine Model System. BIOMED RESEARCH INTERNATIONAL 2021; 2021:2522305. [PMID: 34580637 PMCID: PMC8464433 DOI: 10.1155/2021/2522305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/20/2021] [Indexed: 12/03/2022]
Abstract
Exposure of the respiratory system to the Anisakis pegreffii L3 crude extract (AE) induces airway inflammation; however, the mechanism underlying this inflammatory response remains unknown. AE contains allergens that promote allergic inflammation; exposure to AE may potentially lead to asthma. In this study, we aimed to establish a murine model to assess the effects of AE on characteristic features of chronic asthma, including airway hypersensitivity (AHR), airway inflammation, and airway remodeling. Mice were sensitized for five consecutive days each week for 4 weeks. AHR, lung inflammation, and airway remodeling were evaluated 24 h after the last exposure. Lung inflammation and airway remodeling were assessed from the bronchoalveolar lavage fluid (BALF). To confirm the immune response in the lungs, changes in gene expression in the lung tissue were assessed with reverse transcription-quantitative PCR. The levels of IgE, IgG1, and IgG2a in blood and cytokine levels in the BALF, splenocyte, and lung lymph node (LLN) culture supernatant were measured with ELISA. An increase in AHR was prominently observed in AE-exposed mice. Epithelial proliferation and infiltration of inflammatory cells were observed in the BALF and lung tissue sections. Collagen deposition was detected in lung tissues. AE exposure increased IL-4, IL-5, and IL-13 expression in the lung, as well as the levels of antibodies specific to AE. IL-4, IL-5, and IL-13 were upregulated only in LLN. These findings indicate that an increase in IL-4+ CD4+ T cells in the LLN and splenocyte resulted in increased Th2 response to AE exposure. Exposure of the respiratory system to AE resulted in an increased allergen-induced Th2 inflammatory response and AHR through accumulation of inflammatory and IL-4+ CD4+ T cells and collagen deposition. It was confirmed that A. pegreffii plays an essential role in causing asthma in mouse models and has the potential to cause similar effects in humans.
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Affiliation(s)
- Jun Ho Choi
- Department of Environmental Medical Biology, Institute of Tropical Medicine & Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Ju Yeong Kim
- Department of Environmental Medical Biology, Institute of Tropical Medicine & Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Myung-hee Yi
- Department of Environmental Medical Biology, Institute of Tropical Medicine & Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Myungjun Kim
- Department of Environmental Medical Biology, Institute of Tropical Medicine & Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Tai-Soon Yong
- Department of Environmental Medical Biology, Institute of Tropical Medicine & Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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Elmehy DA, Abdelhai DI, Elkholy RA, Elkelany MM, Tahoon DM, Elkholy RA, Soliman NA, Saad MAH, El-Ebiary AA, Gamea GA. Immunoprotective inference of experimental chronic Trichinella spiralis infection on house dust mites induced allergic airway remodeling. Acta Trop 2021; 220:105934. [PMID: 33895144 DOI: 10.1016/j.actatropica.2021.105934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/03/2021] [Accepted: 04/13/2021] [Indexed: 12/18/2022]
Abstract
Allergic bronchial asthma is characterized by chronic inflammation of the respiratory airways mediated by T-helper 2 (Th2), Th17 and their cytokines. Although most asthmatic patients suffer from allergic airway remodeling (AAR), aggressive anti-allergic treatment failed to reverse it. The hygiene hypothesis illuminated the counter relationship between allergy and helminthic infections. The immune system is modulated by Trichinella spiralis (T. spiralis) infection to maintain homeostasis. Therefore, this work aimed to investigate the impact of chronic T. spiralis infection on induced AAR in C57BL/6 mice sensitized by house dust mites (HDM) allergens. Forty mice were divided into 3 groups: I (10 healthy mice), IΙ (15 HDM sensitized mice), and ΙΙI (15 T. spiralis chronically infected mice and sensitized with HDM allergens). The assessment aimed to evaluate the effects of regulatory CD4+CD25+FOXP3+ cells (Tregs) and their cytokines comparative to hypersensitivity mediated cytokines. Chronic T. spiralis infection effectively prevented the host's AAR. This result was evidenced by upregulated Tregs in blood by flow cytometric analysis and increased interleukin-10 (IL-10) levels in bronchoalveolar lavage (BAL) by Enzyme linked immunosorbent assay (ELISA) as well as improved lung histopathological changes. Also, serum HDM specific immunoglobulin E (IgE), BAL eosinophils, BAL IL-5 levels, and IL-17 gene expression in lung tissues were significantly reduced in T. spiralis chronically infected mice. In conclusion, the immune response in chronic T. spiralis infection could provide a promising mechanistic tool for protection against AAR, which paves the way for innovative preventive measures of other immunological disorders.
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Affiliation(s)
- Dalia A Elmehy
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
| | - Dina I Abdelhai
- Clinical Pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Rasha A Elkholy
- Clinical Pathology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Maram M Elkelany
- Histology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Dina M Tahoon
- Pharmacology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Reem A Elkholy
- Pharmacology Department, Faculty of Medicine, Tanta University, Tanta, Egypt; Pharmacology Department, School of Medicine, Badr University, Cairo, Egypt
| | - Nema A Soliman
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Marwa A Hasby Saad
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Ahmad A El-Ebiary
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Ghada A Gamea
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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Abstract
The hygiene hypothesis posits that the decreased incidence of parasitic infection in developed countries may underlie an increased prevalence of allergic and autoimmune diseases in these countries. As unique inflammation modulator of intracellular parasitism, Trichinella spiralis, or its excretory-secretory (ES) product, shows improved responses to allergies, autoimmune diseases, inflammatory bowel disease, type 1 diabetes, rheumatic arthritis and autoimmune encephalomyelitis by exerting immunomodulatory effects on both innate and adaptive immune cells in animal models. Research has shown that T. spiralis differs from other helminths in manipulation of the host immune response not only by well-known characteristics of its life cycle, but also by its inflammation modulation pathway. How the parasite achieves inflammation modulation has not been fully elucidated yet. This review will generalize the mechanism and focuses on ES immunomodulatory molecules of T. spiralis that may be important for developing new therapeutics for inflammatory disorders.
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Preliminary Trichinella spiralis Infection Ameliorates Subsequent RSV Infection-Induced Inflammatory Response. Cells 2020; 9:cells9051314. [PMID: 32466130 PMCID: PMC7290565 DOI: 10.3390/cells9051314] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 12/21/2022] Open
Abstract
Respiratory syncytial virus (RSV) infection affects the lives of neonates throughout the globe, causing a high rate of mortality upon hospital admission. Yet, therapeutic options to deal with this pulmonary pathogen are currently limited. Helminth therapy has been well received for its immunomodulatory role in hosts, which are crucial for mitigating a multitude of diseases. Therefore, in this study, we used the helminth Trichinella spiralis and assessed its capabilities for modulating RSV infection as well as the inflammatory response induced by it in mice. Our results revealed that RSV-specific antibody responses were enhanced by pre-existing T. spiralis infection, which also limited pulmonary viral replication. Diminished lung inflammation, indicated by reduced pro-inflammatory cytokines and inflammatory cell influx was confirmed, as well as through histopathological assessment. We observed that inflammation-associated nuclear factor kappa-light-chain enhancement of activated B cells (NF-κB) and its phosphorylated forms were down-regulated, whereas antioxidant-associated nuclear factor erythroid 2-related factor 2 (Nrf2) protein expression was upregulated in mice co-infected with T. spiralis and RSV. Upregulated Nrf2 expression contributed to increased antioxidant enzyme expression, particularly NQO1 which relieved the host of oxidative stress-induced pulmonary inflammation caused by RSV infection. These findings indicate that T. spiralis can mitigate RSV-induced inflammation by upregulating the expression of antioxidant enzymes.
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Immunomodulatory effect of Syphacia obvelata in treatment of experimental DSS-induced colitis in mouse model. Sci Rep 2019; 9:19127. [PMID: 31836772 PMCID: PMC6911064 DOI: 10.1038/s41598-019-55552-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 11/29/2019] [Indexed: 02/08/2023] Open
Abstract
The ability of helminth parasite infections to manipulate the immune system of their host towards T regulatory responses has been proposed to suppress the inflammatory response. The aim of this study was to investigate the protective and therapeutic effect of Syphacia obvelata in the treatment of experimental DSS -induced colitis. 50 male C57BL/6 mice were divided into 5 groups: healthy uninfected controls, DSS colitis, receiving only S. obv, preventive (S. obv + DSS) and therapeutic group (DSS + S.obv). Colitis intensity was investigated by measuring body weight changes, stool consistency/bleeding and colon length. To evaluate the immune responses induced by this nematode, TNF-α, IL-10, IL-17, IFN-γ and expressing of FoxP3+ T cells were measured in mesenteric lymph nodes and Peyer’s patches cells. Mice in preventive and therapeutic groups treated with S. obv egg significantly ameliorated the severity of the DSS colitis, indicated by the reduced disease manifestations, improved histopathological scores correlated with the up regulation of Treg responses and down regulation of proinflammatory cytokines. S. obv can prevention and reverse on-going murine DSS colitis. The data suggest that induction of Tregs and change in cytokine profiles during helminthic therapies were responsible for reversed inflammatory events in IBD.
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Coronado S, Zakzuk J, Regino R, Ahumada V, Benedetti I, Angelina A, Palomares O, Caraballo L. Ascaris lumbricoides Cystatin Prevents Development of Allergic Airway Inflammation in a Mouse Model. Front Immunol 2019; 10:2280. [PMID: 31611876 PMCID: PMC6777510 DOI: 10.3389/fimmu.2019.02280] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/09/2019] [Indexed: 12/17/2022] Open
Abstract
Severe helminth infections are negatively associated to allergic diseases like asthma; therefore, the immunomodulatory properties of parasite-derived components have been analyzed, raising the possibility of their use as anti-inflammatory molecules. We evaluated the immunomodulatory properties of Ascaris lumbricoides recombinant cysteine protease inhibitor (rAl-CPI) in a mouse model of allergic airway inflammation induced by the house dust mite (HDM) Blomia tropicalis and its effects on human monocyte-derived dendritic cells (HmoDCs). The B. tropicalis sensitized/challenged mice developed extensive cellular airway inflammatory response, which was significantly reduced upon treatment with rAl-CPI prior to B. tropicalis sensitization, affecting particularly the perivascular/peribronchial infiltrate cells, eosinophils/neutrophils, and goblet cells. A significant decrease of Th2 cytokines, total, and specific IgE antibodies was observed in rAl-CPI treated mice. The antibody response was biased to IgG, mainly IgG2a. Administration of rAl-CPI-alone and rAl-CPI before mite sensitization were associated with a significant increase of regulatory T cells (Tregs) in spleen and elevated IL-10 levels in BAL and splenocytes culture supernatants, which was partially affected by anti-IL10 receptor use. In vitro, rAl-CPI showed a modulatory effect on HmoDCs, lowering the expression of HLA-DR, CD83, and CD86, while inducing IL-10 and IL-6 production. This suggests an inhibition of HmoDC maturation and a possible link with the inhibition of the allergic response observed in the murine model.
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Affiliation(s)
- Sandra Coronado
- Institute for Immunological Research, Universidad de Cartagena, Cartagena, Colombia
| | - Josefina Zakzuk
- Institute for Immunological Research, Universidad de Cartagena, Cartagena, Colombia
| | - Ronald Regino
- Institute for Immunological Research, Universidad de Cartagena, Cartagena, Colombia
| | - Velky Ahumada
- Institute for Immunological Research, Universidad de Cartagena, Cartagena, Colombia
| | - Ines Benedetti
- Faculty of Medicine, Universidad de Cartagena, Cartagena, Colombia
| | - Alba Angelina
- Department of Biochemistry and Molecular Biology, Chemistry School, Complutense University of Madrid, Madrid, Spain
| | - Oscar Palomares
- Department of Biochemistry and Molecular Biology, Chemistry School, Complutense University of Madrid, Madrid, Spain
| | - Luis Caraballo
- Institute for Immunological Research, Universidad de Cartagena, Cartagena, Colombia
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Gao X, Ren X, Wang Q, Yang Z, Li Y, Su Z, Li J. Critical roles of regulatory B and T cells in helminth parasite-induced protection against allergic airway inflammation. Clin Exp Immunol 2019; 198:390-402. [PMID: 31397879 DOI: 10.1111/cei.13362] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2019] [Indexed: 12/29/2022] Open
Abstract
The prevalence of allergic asthma and incidences of helminth infections in humans are inversely correlated. Although experimental studies have established the causal relation between parasite infection and allergic asthma, the mechanism of the parasite-associated immunomodulation is not fully elucidated. Using a murine model of asthma and nematode parasite Heligmosomoides polygyrus, we investigated the roles of regulatory B cells (Breg ) and T cells (Treg ) in mediation of the protection against allergic asthma by parasite. H. polygyrus infection significantly suppressed ovalbumin (OVA)-induced allergic airway inflammation (AAI) evidenced by alleviated lung histopathology and reduced numbers of bronchoalveolar inflammatory cell infiltration, and induced significant responses of interleukin (IL)-10+ Breg , IL-10+ Treg and forkhead box protein 3 (FoxP3)+ Treg in mesenteric lymph node and spleen of the mice. Adoptive transfer of IL-10+ Breg and IL-10+ Treg cell prevented the lung immunopathology in AAI mice. Depletion of FoxP3+ Treg cells in FoxP3-diphtheria toxin (DT) receptor transgenic mice by diphtheria toxin (DT) treatment exacerbated airway inflammation in parasite-free AAI mice and partially abrogated the parasite-induced protection against AAI. IL-10+ Breg cells were able to promote IL-10+ Treg expansion and maintain FoxP3+ Treg cell population. These two types of Tregs failed to induce CD19+ B cells to transform into IL-10+ Breg cells. These results demonstrate that Breg , IL-10+ Treg and FoxP3+ Treg cells contribute in A discrepant manner to the protection against allergic airway immunopathology by parasiteS. Breg cell might be a key upstream regulatory cell that induces IL-10+ Treg response and supports FoxP3+ Treg cell population which, in turn, mediate the parasite-imposed immunosuppression of allergic airway inflammation. These results provide insight into the immunological relationship between parasite infection and allergic asthma.
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Affiliation(s)
- X Gao
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - X Ren
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Q Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Z Yang
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Y Li
- Department of Public Health, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Z Su
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - J Li
- Department of Allergy and Clinical Immunology, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
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13
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Sun S, Li H, Yuan Y, Wang L, He W, Xie H, Gao S, Cheng R, Qian H, Jiang H, Wang X, Zhan B, Fang Q, Yang X. Preventive and therapeutic effects of Trichinella spiralis adult extracts on allergic inflammation in an experimental asthma mouse model. Parasit Vectors 2019; 12:326. [PMID: 31253164 PMCID: PMC6599242 DOI: 10.1186/s13071-019-3561-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 06/09/2019] [Indexed: 01/09/2023] Open
Abstract
Background Helminths immunomodulate the host immune system by secreting proteins to create an inhibitory environment as a strategy for survival in the host. As a bystander effect, this balances the host immune system to reduce hypersensitivity to allergens or autoantigens. Based on this, helminth therapy has been used to treat some allergic or autoimmune diseases. As a tissue-dwelling helminth, Trichinella spiralis infection has been identified to have strong immunomodulatory effects; the effective components in the worm have not yet been identified. Methods The soluble extracts of T. spiralis adult worms and muscle larvae were used to treat airway inflammation before and after an ovalbumin (OVA)-sensitization/challenge in an OVA-induced asthma mouse model. The therapeutic effects were observed by measuring the level of inflammation in the lungs. Results The soluble products derived from T. spiralis parasites, especially from adult worms, were able to ameliorate OVA-induced airway inflammatory responses which were associated with reduced eosinophil infiltration, OVA-specific IgE, Th2 cytokine IL-4, and increased IL-10 and TGF-β. The stimulation of the Treg response may contribute to the alleviated allergic inflammation. Conclusions Trichinella spiralis worm extracts stimulate regulatory cytokines that are associated with reduced allergic airway inflammation. The identification of effective components in the adult worm extracts will be a crucial approach for developing a novel therapeutic for allergic and autoimmune diseases.
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Affiliation(s)
- Siying Sun
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Huihui Li
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Yuan Yuan
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Liyuan Wang
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Wenxin He
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Hong Xie
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Shifang Gao
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Ruoxue Cheng
- Pharmacy College of Anhui Medical University, Hefei, 230001, China
| | - Haichun Qian
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Hui Jiang
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Xiaoli Wang
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China
| | - Bin Zhan
- Section of Tropical Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Qiang Fang
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China. .,Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, 233030, China.
| | - Xiaodi Yang
- Department of Microbiology and Parasitology of Bengbu Medical College, Bengbu, 233000, China. .,Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu, 233030, China.
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14
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Kang SA, Park MK, Park SK, Choi JH, Lee DI, Song SM, Yu HS. Adoptive transfer of Trichinella spiralis-activated macrophages can ameliorate both Th1- and Th2-activated inflammation in murine models. Sci Rep 2019; 9:6547. [PMID: 31024043 PMCID: PMC6484028 DOI: 10.1038/s41598-019-43057-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 04/15/2019] [Indexed: 02/06/2023] Open
Abstract
Trichinella spiralis is a zoonotic nematode and food borne parasite and infection with T. spiralis leads to suppression of the host immune response and other immunopathologies. Alternative activated macrophages (M2) as well as Treg cells, a target for immunomodulation by the helminth parasite, play a critical role in initiating and modulating the host immune response to parasite. The precise mechanism by which helminths modulate host immune response is not fully understood. To determine the functions of parasite-induced M2 macrophages, we compared the effects of M1 and M2 macrophages obtained from Trichinella spiralis-infected mice with those of T. spiralis excretory/secretory (ES) protein-treated macrophages on experimental intestinal inflammation and allergic airway inflammation. T. spiralis infection induced M2 macrophage polarization by increasing the expression of CD206, ARG1, and Fizz2. In a single application, we introduced macrophages obtained from T. spiralis-infected mice and T. spiralis ES protein-treated macrophages into mice tail veins before the induction of dextran sulfate sodium (DSS)-induced colitis, ovalbumin (OVA)-alum sensitization, and OVA challenge. Colitis severity was assessed by determining the severity of colitis symptoms, colon length, histopathologic parameters, and Th1-related inflammatory cytokine levels. Compared with the DSS-colitis group, T. spiralis-infected mice and T. spiralis ES protein-treated macrophages showed significantly lower disease activity index (DAI) at sacrifice and smaller reductions of body weight and proinflammatory cytokine level. The severity of allergic airway inflammation was assessed by determining the severity of symptoms of inflammation, airway hyperresponsiveness (AHR), differential cell counts, histopathologic parameters, and levels of Th2-related inflammatory cytokines. Severe allergic airway inflammation was induced after OVA-alum sensitization and OVA challenge, which significantly increased Th2-related cytokine levels, eosinophil infiltration, and goblet cell hyperplasia in the lung. However, these severe allergic symptoms were significantly decreased in T. spiralis-infected mice and T. spiralis ES protein-treated macrophages. Helminth infection and helminth ES proteins induce M2 macrophages. Adoptive transfer of macrophages obtained from helminth-infected mice and helminth ES protein-activated macrophages is an effective treatment for preventing and treating airway allergy in mice and is promising as a therapeutic for treating inflammatory diseases.
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Affiliation(s)
- Shin Ae Kang
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Mi-Kyung Park
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Sang Kyun Park
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Jun Ho Choi
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Da In Lee
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - So Myong Song
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea
| | - Hak Sun Yu
- Department of Parasitology and Tropical Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Republic of Korea.
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15
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Song SM, Kang SA, Park HK, Kim DH, Park SY, Jang SB, Yu HS. Acanthamoeba profilin elicits allergic airway inflammation in mice. PLoS Negl Trop Dis 2018; 12:e0006979. [PMID: 30557322 PMCID: PMC6312355 DOI: 10.1371/journal.pntd.0006979] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 12/31/2018] [Accepted: 11/08/2018] [Indexed: 12/03/2022] Open
Abstract
Background In previous studies, we suggested that Acanthamoeba is a new aero-allergen and that patients who showed positive results for the skin-prick test response to Acanthamoeba cross-reacted with several pollen allergens. Additionally, patients with common antibodies reacted to the 13–15 kDa Acanthamoeba unknown allergen. Objective We examined whether profilin of Acanthamoeba is a human airway allergic agent because of its molecular weight. Methods We expressed recombinant Ac-PF (rAc-PF) protein using an Escherichia coli expression system and evaluated whether Ac-PF is an airway allergic agent using an allergic airway inflammation animal model. Results Airway hyperresponsiveness was increased in rAc-PF-inoculated mice. The number of eosinophils and levels of Th2 cytokines, interleukin (IL)-4, IL-5, and IL-13 were increased in the bronchial alveolar lavage fluid of rAc-PF-treated mice. The lungs of the rAc-PF-treated mice group showed enhanced mucin production and metaplasia of lung epithelial cells and goblet cells. Conclusion In this study, we demonstrated that rAc-PF may be an allergen in Acanthamoeba, but further studies needed to identify the mechanisms of allergenic reactions induced by Ac-PF. Recently, the number of asthma patients have increased sharply. Among patients with asthma have a high serum IgE titer, but despite this, some of these patients do not react to known allergens in skin prick tests, that suggests the presence of unknown environmental allergens. The protozoa Acanthamoeba live in very diverse environment including water, soil, air and even human nasal cavities, throat, pharynx and lung. In previous study, Acanthamoeba could be a new aero-allergen. Patients who showed positive results for the skin-prick test response to Acanthamoeba, their serum could be cross-reacted with several pollen allergens as well as Acanthamoeba total proteins. Additionally, the patients have common antibodies reacted to the 13–15 kDa Acanthamoeba unknown allergen. Profilin, which is found in all eukaryotic organisms in most cells, is an actin-binding protein that interferes with nucleation and restructuring of new filaments. Recent studies showed that profilin functions as a pan-allergen recognized by IgE in approximately 20% of birch pollen and plant food allergic patients. In Acanthamoeba, two isoforms of profilin (Ac-PF) have been identified: profilin-I and profilin-II. We examined profilin from Acanthamoeba as a potential human airway allergic agent because of its molecular weight (13–14 kDa) and cross-reactivity with several pollen allergens in the skin prick test showing positive results for Acanthamoeba in chronic cough patients. In this study, we expressed recombinant Ac-PF (rAc-PF) protein using an Escherichia coli expression system and evaluated whether Ac-PF is an airway allergic agent using an asthma animal model. Our study showed that rAc-PF may be an allergen in Acanthamoeba, but further studies needed to identify the mechanisms of allergenic reactions induced by Ac-PF.
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Affiliation(s)
- So Myung Song
- Department of Parasitology School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
| | - Shin Ae Kang
- Department of Parasitology School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
| | - Hye Kyung Park
- Department of Internal Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
| | - Dong Hee Kim
- Department of Nursing, College of Nursing, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
| | - So Young Park
- Department of Parasitology School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
- Department of Molecular Biology, College of Natural Sciences, Pusan National University, Busan, South Korea
| | - Se Bok Jang
- Department of Molecular Biology, College of Natural Sciences, Pusan National University, Busan, South Korea
| | - Hak Sun Yu
- Department of Parasitology School of Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, South Korea
- * E-mail:
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16
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Yin W, Song Y, Chang X. Single-cell RNA-Seq analysis identifies a noncoding interleukin 4 ( IL-4) RNA that post-transcriptionally up-regulates IL-4 production in T helper cells. J Biol Chem 2018; 294:290-298. [PMID: 30404921 DOI: 10.1074/jbc.ra118.004111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 11/02/2018] [Indexed: 12/24/2022] Open
Abstract
High-throughput sequencing has revealed a tremendous complexity of cellular transcriptomes, which is partly due to the generation of multiple alternative transcripts from a single gene locus. Because alternative transcripts often have low abundance in bulk cells, the functions of most of these transcripts and their relationship with their canonical counterparts remain unclear. Here we applied single-cell RNA-Seq to analyze the transcriptome complexity of in vitro-differentiated, murine type 2 T helper (Th2) cells. We found that cytokine gene transcripts contribute most of the intercellular heterogeneity, with a group of universal cytokines, including interleukins 1a, 2, 3, and 16, being bimodally expressed. At the single-cell level, use of alternative promoters prevalently generated alternative transcripts. For instance, although undetectable in bulk cells, a noncoding RNA isoform of IL-4 (IL4nc), which was driven by an intronic promoter in the IL-4 locus, was predominantly expressed in a subset of Th2 cells. IL4nc displayed distinct temporal expression patterns compared with the canonical IL-4 mRNA and post-transcriptionally promoted the production of IL-4 protein in Th2 cells. In conclusion, our findings reveal a mechanism whereby minor noncanonical transcripts post-transcriptionally regulate expression of their cognate canonical genes.
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Affiliation(s)
- Weijie Yin
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yan Song
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, California 92037
| | - Xing Chang
- Chinese Academy of Sciences Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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17
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McSorley HJ, Chayé MAM, Smits HH. Worms: Pernicious parasites or allies against allergies? Parasite Immunol 2018; 41:e12574. [PMID: 30043455 PMCID: PMC6585781 DOI: 10.1111/pim.12574] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/13/2018] [Accepted: 07/18/2018] [Indexed: 12/14/2022]
Abstract
Type 2 immune responses are most commonly associated with allergy and helminth parasite infections. Since the discovery of Th1 and Th2 immune responses more than 30 years ago, models of both allergic disease and helminth infections have been useful in characterizing the development, effector mechanisms and pathological consequences of type 2 immune responses. The observation that some helminth infections negatively correlate with allergic and inflammatory disease led to a large field of research into parasite immunomodulation. However, it is worth noting that helminth parasites are not always benign infections, and that helminth immunomodulation can have stimulatory as well as suppressive effects on allergic responses. In this review, we will discuss how parasitic infections change host responses, the consequences for bystander immunity and how this interaction influences clinical symptoms of allergy.
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Affiliation(s)
- Henry J McSorley
- MRC Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Mathilde A M Chayé
- Department of Parasitology, Leiden Immunology of Parasitic Infections Group, Leiden University Medical Centre, ZA Leiden, The Netherlands
| | - Hermelijn H Smits
- Department of Parasitology, Leiden Immunology of Parasitic Infections Group, Leiden University Medical Centre, ZA Leiden, The Netherlands
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18
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Wu J, Zhong Y, Shen X, Yang K, Cai W. Maternal and early-life vitamin D deficiency enhances allergic reaction in an ovalbumin-sensitized BALB/c mouse model. Food Nutr Res 2018; 62:1401. [PMID: 29881333 PMCID: PMC5985744 DOI: 10.29219/fnr.v62.1401] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 12/11/2022] Open
Abstract
Background Recent studies have shown that vitamin D deficiency may contribute to the high prevalence of food allergy but the underlying mechanisms are far from clear. Objective The present study was designed to investigate the effect of maternal and early-life vitamin D deficiency in the development of food allergy. Design BALB/c mice were treated with ovalbumin (OVA) to trigger allergic reactions, under vitamin D-deficient (by maternal and early-life feeding of vitamin D deprived chow diet) or vitamin D-sufficient conditions. Results Increased occurrence and severity of allergic diarrhea as well as decreased rectal temperature were observed after OVA sensitization. For vitamin D deficiency groups, OVA-specific IgE and IL-4 levels were significantly increased, while IFN-γ levels were unchanged. Vitamin D deficiency also attenuated the structure of small intestinal villi and decreased the expression of the tight junction protein between adjacent epithelial cells and the percentages of CD4+CD25+Foxp3+Treg cell in spleen and mesenteric lymph nodes. Conclusions Maternal and early-life vitamin D deficiency have notable influence on the susceptibility to food allergy, which may relate with the reduced population of Treg cell and the dysfunction of intestinal epithelial barrier.
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Affiliation(s)
- Jiang Wu
- Department of Clinical Nutrition, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China, 200092
| | - Yan Zhong
- Department of Clinical Nutrition, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiuhua Shen
- Department of Clinical Nutrition, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kefeng Yang
- Department of Clinical Nutrition, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China, 200092
| | - Wei Cai
- Department of Clinical Nutrition, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China, 200092
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19
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Yan LZ, Shi XM, Zu YW, Shen YY, Chen XX, Zhao MJ, Li XP, Yan BL, Huang HC. The opposite roles of PAS-5 and Galectin-1 in immune response during the early infection of Angiostrongylus cantonensis. Parasit Vectors 2018; 11:318. [PMID: 29843794 PMCID: PMC5975691 DOI: 10.1186/s13071-018-2894-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/14/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Angiostrongylus cantonensis is a human zoonotic nematode parasite. Our previous studies found that PAS-5 and Galectin-1 (Gal-1) proteins of A. cantonensis could be strongly recognized by sera from mice infected with A. cantonensis. In this study, we further evaluated the potential roles of these two proteins in the induction of immune response in mice. METHODS Mice were immunized with recombinant PAS-5 or Gal-1 and then challenged with 30 infective A. cantonensis larvae following the last immunization. We then examined the infected mice for changes in serum antibodies and cytokines by ELISA, CD4+ T cells and CD4+CD25+FoxP3+ regulatory T cells (Tregs) by flow cytometry, and tissue damage severity by hematoxylin-eosin (H&E) staining. RESULTS Compared with control mice, the PAS-5-immunized mice exhibited increased levels of serum antibodies and cytokines (except for IL-10) at different time points post-infection. PAS-5 immunization promoted significant proliferation of CD4+ T cells, and caused more damage in the brain tissue. Vaccination with Gal-1 inhibited the production of antibodies (except for IgG1) and IFN-γ, but promoted the expression of IL-4 and IL-10. Gal-1 immunization results in significant increases in the levels of CD4+CD25+FoxP3+ Tregs, and mild inflammatory changes. CONCLUSIONS Taken together, our findings show that PAS-5 enhances, but Gal-1 inhibits the immune response in the early stage of A. cantonensis infections.
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Affiliation(s)
- Lan-Zhu Yan
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
- Clinical Laboratory of Bethune International Peace Hospital, Shijiazhuang, Hebei 050082 People’s Republic of China
| | - Xiao-Meng Shi
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Yan-Wen Zu
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Yuan-Yuan Shen
- School of the Second Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Xi-Xi Chen
- School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Meng-Jing Zhao
- School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Xing-Pan Li
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Bao-Long Yan
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
| | - Hui-Cong Huang
- Department of Parasitology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035 People’s Republic of China
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20
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Wuhao L, Ran C, Xujin H, Zhongdao W, Dekumyoy P, Zhiyue L. Parasites and asthma. Parasitol Res 2017; 116:2373-2383. [PMID: 28689246 DOI: 10.1007/s00436-017-5548-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 06/26/2017] [Indexed: 11/30/2022]
Abstract
Nowadays, many studies have found low morbidity of asthma in epidemic areas of parasitic diseases, as shown by the hygiene hypothesis. It is obvious that some parasite infections can prevent asthma and studies have been carried out to clarify the mechanism of the preventive effect and search for the future asthmatic therapies. Previous findings have indicated that this mechanism may be related to the immune response switching from Th1 to Th2 and important cells induced by parasites, including the regulatory T cells, regulatory B cells, dendrite cells, and alternatively activated macrophages. Cytokine IL-10 also plays a nonredundant role in protection against allergic airway inflammation in asthma. This review focuses on the relationship between parasites and asthma, and the potential protection mechanism involved.
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Affiliation(s)
- Lin Wuhao
- Zhongshan School of Medicine, Sun Yat-sen University, 74 2nd Zhongshan Road, Guangzhou, 510080, China.,Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China
| | - Chen Ran
- Zhongshan School of Medicine, Sun Yat-sen University, 74 2nd Zhongshan Road, Guangzhou, 510080, China.,Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China
| | - He Xujin
- The Affiliated High School of South China Normal University, Guangzhou, 510630, China
| | - Wu Zhongdao
- Zhongshan School of Medicine, Sun Yat-sen University, 74 2nd Zhongshan Road, Guangzhou, 510080, China.,Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China.,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080, China
| | - Paron Dekumyoy
- Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand.
| | - Lv Zhiyue
- Zhongshan School of Medicine, Sun Yat-sen University, 74 2nd Zhongshan Road, Guangzhou, 510080, China. .,Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, Guangzhou, 510080, China. .,Provincial Engineering Technology Research Center for Biological Vector Control, Guangzhou, 510080, China.
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21
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Farid AS, Fath EM, Mido S, Nonaka N, Horii Y. Paraoxonase-1 activity is related to Trichinella spiralis-induced hepatitis in rats. Eur J Clin Invest 2017; 47:250-261. [PMID: 28103386 DOI: 10.1111/eci.12731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 01/16/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Little is known about the potential adverse effects of a chronic zoonotic nematode Trichinella spiralis infection on hepatic inflammation and its relationship to paraoxonase (PON)-1 and butyrylcholinesterase (BuChE) activities. Therefore, we aimed to examine the effects of T. spiralis infection on hepatic synthesis of PON1. METHODS Wistar rats were infected with 2500 first-stage larvae (L1) of T. spiralis, and serum PON1 and BuChE activities were evaluated. Hepatic expression levels of PON1, BuChE and various cytokines and chemokines [interleukin (IL)-1, IL-4, IL-6, IL-10, tumour necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, macrophage inflammatory protein (MIP)-1α, and transforming growth factor (TGF)-β1] were evaluated for up to 9 weeks post-infection (p.i.). The effect of these changes on the degree of hepatic apoptosis was also investigated. RESULTS Trichinella spiralis infection in rats induced significant decreases in serum PON1 activities from day 2 until week 7 p.i. and BuChE activity starting from day 4 until 2 weeks p.i. Moreover, T. spiralis infection increased serum pro-inflammatory cytokines IL-1, IL-6 and TNF-α as well as chemokines MCP-1, MIP-1α and TGF-β1 during the enteral phase of the parasite life cycle. The anti-inflammatory cytokines IL-4 and IL-10 showed significant increases during the enteral phase for the former and the muscle phase for the latter. These were associated with hepatic inflammation and apoptosis. These events typically decreased hepatic PON1 and BuChE mRNA expression. CONCLUSIONS Immune responses mounted against T. spiralis infection in rats were associated with hepatic inflammation and a subsequent decrease in serum PON1 and BuChE activities.
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Affiliation(s)
- Ayman Samir Farid
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, Egypt
| | - Eman Mohamed Fath
- Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Shogo Mido
- Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan
| | - Nariaki Nonaka
- Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
| | - Yoichiro Horii
- Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan
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Yu HS, Park MK, Kang SA, Cho KS, Mun SJ, Roh HJ. Culture supernatant of adipose stem cells can ameliorate allergic airway inflammation via recruitment of CD4 +CD25 +Foxp3 T cells. Stem Cell Res Ther 2017; 8:8. [PMID: 28114970 PMCID: PMC5259897 DOI: 10.1186/s13287-016-0462-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/19/2016] [Accepted: 12/17/2016] [Indexed: 12/16/2022] Open
Abstract
Background In a previous study, we demonstrated that intravenous administration of adipose tissue stem cells (ASCs) could significantly reduce allergic symptoms and suppress eosinophilic inflammation. Methods To evaluate the secretome of ASCs, we administrated culture supernatant of ASCs (ASC sup, which contains the ASC secretome) and uncultured fresh medium (con sup) into a mouse model of allergic airway inflammation. Subsequently we observed the mice for signs of inflammation and investigated Th1-, Th2-, and Treg-related cytokine levels as well as recruitment of Treg cells into the airway. Results We found that ASC sup could ameliorate allergic airway inflammation in this model; the value of airway hyperresponsiveness, and the occurrence of inflammatory cell infiltration in the lung, as well as the number of eosinophils, and goblet cells in the lung epithelium were all significantly decreased by ASC sup treatment. In addition, ASC sup treatment significantly decreased the levels of IL-4, IL-5, and IL-13 in the bronchial alveolar lavage fluid and in culture medium of lung-draining lymph node cells of the animal model of acute asthma. We detected numerous CTLA-4 and Foxp3-expressing cells in the lung after ASC sup treatment. ASC sup was found to have a higher concentration of IL-10 and TGF-β compared to con sup. Conclusions Stem cells have powerful potential for therapeutic functions in various diseases, but they also have many drawbacks. In this study, we found strong immunosuppressive ability of ASC sup in an allergic airway mouse model. It may be possible to use ASC sup for treatment of many immunological diseases in the near future. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0462-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hak Sun Yu
- Department of Parasitology, Pusan National University School of Medicine, Yangsan, 626-870, Republic of Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 project, Yangsan, Republic of Korea
| | - Mi-Kyung Park
- Department of Parasitology, Pusan National University School of Medicine, Yangsan, 626-870, Republic of Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 project, Yangsan, Republic of Korea
| | - Shin Ae Kang
- Department of Parasitology, Pusan National University School of Medicine, Yangsan, 626-870, Republic of Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 project, Yangsan, Republic of Korea
| | - Kyu-Sup Cho
- Department of Otorhinolaryngology and Biomedical Research Institute, Pusan National University Hospital, Busan, 602-739, Republic of Korea
| | - Sue Jean Mun
- Department of Otorhinolaryngology and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Beomeo-li, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, Yangsan, 626-770, Republic of Korea
| | - Hwan-Jung Roh
- Department of Otorhinolaryngology and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Beomeo-li, Mulgeum-eup, Yangsan-si, Gyeongsangnam-do, Yangsan, 626-770, Republic of Korea.
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Nonencapsulated Trichinella pseudospiralis Infection Impairs Follicular Helper T Cell Differentiation with Subclass-Selective Decreases in Antibody Responses. Infect Immun 2016; 84:3550-3556. [PMID: 27736779 DOI: 10.1128/iai.00597-16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 09/22/2016] [Indexed: 11/20/2022] Open
Abstract
Infectious microorganisms often modify host immunity to escape from immune elimination. Trichinella is a unique nematode of the helminth family, whose members parasitize the muscle cells inside the host without robust eliminative reactions. There are several species of Trichinella; some develop in muscle cells that become encapsulated (e.g., Trichinella spiralis) and others in cells that do not encapsulate (e.g., Trichinella pseudospiralis). It has already been established that Trichinella infection affects host immune responses in several experimental immune diseases in animal models; however, most of those studies were done using T. spiralis infection. As host immune responses to T. spiralis and T. pseudospiralis infections have been reported to be different, it is necessary to clarify how T. pseudospiralis infection influences the host immune responses. In this study, we investigated the influence on host humoral immunity in T. pseudospiralis-infected mice. We demonstrated that T. pseudospiralis infection decreased antigen-specific IgG2a and IgG2b antibody (Ab) production in mice immunized with a model antigen. This selective decrease in gamma interferon (IFN-γ)-dependent Ab production was not due to a decrease in IFN-γ production, and we instead found impaired follicular helper T (Tfh) cell differentiation. The affinity maturation of antigen-specific Ab tended to be delayed but was not significant in T. pseudospiralis-infected mice. We also observed that CD11b+ spleen cells in T. pseudospiralis-infected mice expressed CD206 and PD-L2, the phenotype of which was M2 macrophages with weak production of interleukin-6 (IL-6), possibly resulting in impaired Tfh differentiation. Taken together, our results indicate that nonencapsulated Trichinella infection induces selective dampening in humoral immunity with the suppression of Tfh differentiation.
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Ahn JB, Kang SA, Kim DH, Yu HS. Activation and Recruitment of Regulatory T Cells via Chemokine Receptor Activation in Trichinella spiralis-Infected Mice. THE KOREAN JOURNAL OF PARASITOLOGY 2016; 54:163-71. [PMID: 27180574 PMCID: PMC4870966 DOI: 10.3347/kjp.2016.54.2.163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 03/05/2016] [Accepted: 03/15/2016] [Indexed: 11/23/2022]
Abstract
As most infections by the helminth parasite elicit the recruitment of CD4(+)CD25(+)Foxp3(+) T (Treg) cells, many scientists have suggested that these cells could be used for the treatment of immune-mediated inflammation and associated diseases. In order to investigate the distribution and alteration of activated Treg cells, we compared the expression levels of Treg cell activation markers in the ileum and gastrocnemius tissues 1, 2, and 4 weeks after infection. The number of Treg cells was monitored using GFP-coded Foxp3 transgenic mice. In mice at 1 week after Trichinella spiralis infection, the number of activated Treg cells was higher than in the control group. In mice at 2 weeks after infection, there was a significant increase in the number of cells expressing Foxp3 and CTLA-4 when compared to the control group and mice at 1 week after infection. At 4 weeks after infection, T. spiralis was easily identifiable in nurse cells in mouse muscles. In the intestine, the expression of Gzmb and Klrg1 decreased over time and that of Capg remained unchanged for the first and second week, then decreased in the 4th week. However, in the muscles, the expression of most chemokine genes was increased due to T. spiralis infection, in particular the expression levels of Gzmb, OX40, and CTLA-4 increased until week 4. In addition, increased gene expression of all chemokine receptors in muscle, CXCR3, CCR4, CCR5, CCR9, and CCR10, was observed up until the 4th week. In conclusion, various chemokine receptors showed increased expressions combined with recruitment of Treg cells in the muscle tissue.
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Affiliation(s)
- Jeong-Bin Ahn
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 50612, Korea
| | - Shin Ae Kang
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 50612, Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project, Pusan National University, Yangsan 50612, Korea
| | - Dong-Hee Kim
- Department of Nursing, College of Nursing, Pusan National University, Yangsan 50612, Korea
| | - Hak Sun Yu
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 50612, Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project, Pusan National University, Yangsan 50612, Korea
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Kim S, Park MK, Yu HS. Toll-Like Receptor Gene Expression during Trichinella spiralis Infection. THE KOREAN JOURNAL OF PARASITOLOGY 2015; 53:431-8. [PMID: 26323841 PMCID: PMC4566501 DOI: 10.3347/kjp.2015.53.4.431] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/22/2015] [Accepted: 07/12/2015] [Indexed: 11/23/2022]
Abstract
In Trichinella spiralis infection, type 2 helper T (Th2) cell-related and regulatory T (Treg) cell-related immune responses are the most important immune events. In order to clarify which Toll-like receptors (TLRs) are closely associated with these responses, we analyzed the expression of mouse TLR genes in the small intestine and muscle tissue during T. spiralis infection. In addition, the expression of several chemokine- and cytokine-encoding genes, which are related to Th2 and Treg cell mediated immune responses, were analyzed in mouse embryonic fibroblasts (MEFs) isolated from myeloid differentiation factor 88 (MyD88)/TIR-associated proteins (TIRAP) and Toll receptor-associated activator of interferons (TRIF) adapter protein deficient and wild type (WT) mice. The results showed significantly increased TLR4 and TLR9 gene expression in the small intestine after 2 weeks of T. spiralis infection. In the muscle, TLR1, TLR2, TLR5, and TLR9 gene expression significantly increased after 4 weeks of infection. Only the expression of the TLR4 and TLR9 genes was significantly elevated in WT MEF cells after treatment with excretory-secretory (ES) proteins. Gene expression for Th2 chemokine genes were highly enhanced by ES proteins in WT MEF cells, while this elevation was slightly reduced in MyD88/TIRAP(-/-) MEF cells, and quite substantially decreased in TRIF(-/-) MEF cells. In contrast, IL-10 and TGF-β expression levels were not elevated in MyD88/TIRAP(-/-) MEF cells. In conclusion, we suggest that TLR4 and TLR9 might be closely linked to Th2 cell and Treg cell mediated immune responses, although additional data are needed to convincingly prove this observation.
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Affiliation(s)
- Sin Kim
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 626-770, Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project, Yangsan 626-770, Korea
| | - Mi Kyung Park
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 626-770, Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project, Yangsan 626-770, Korea
| | - Hak Sun Yu
- Department of Parasitology, School of Medicine, Pusan National University, Yangsan 626-770, Korea.,Immunoregulatory Therapeutics Group in Brain Busan 21 Project, Yangsan 626-770, Korea
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Secretory Products of Trichinella spiralis Muscle Larvae and Immunomodulation: Implication for Autoimmune Diseases, Allergies, and Malignancies. J Immunol Res 2015; 2015:523875. [PMID: 26114122 PMCID: PMC4465845 DOI: 10.1155/2015/523875] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/18/2015] [Indexed: 12/12/2022] Open
Abstract
Trichinella spiralis has the unique ability to make itself "at home" by creating and hiding in a new type of cell in the host body that is the nurse cell. From this immunologically privileged place, the parasite orchestrates a long-lasting molecular cross talk with the host through muscle larvae excretory-secretory products (ES L1). Those products can successfully modulate parasite-specific immune responses as well as responses to unrelated antigens (either self or nonself in origin), providing an anti-inflammatory milieu and maintaining homeostasis. It is clear, based on the findings from animal model studies, that T. spiralis and its products induce an immunomodulatory network (which encompasses Th2- and Treg-type responses) that may allow the host to deal with various hyperimmune-associated disorders as well as tumor growth, although the latter still remains unclear. This review focuses on studies of the molecules released by T. spiralis, their interaction with pattern recognition receptors on antigen presenting cells, and subsequently provoked responses. This paper also addresses the immunomodulatory properties of ES L1 molecules and how the induced immunomodulation influences the course of different experimental inflammatory and malignant diseases.
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