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Krenev IA, Panteleev PV, Umnyakova ES, Gorbunov NP, Kostevich VA, Balandin SV, Ovchinnikova TV, Aleshina GM, Berlov MN. In Vitro Modulation of Complement Activation by Therapeutically Prospective Analogues of the Marine Polychaeta Arenicin Peptides. Mar Drugs 2022; 20:md20100612. [PMID: 36286436 PMCID: PMC9605166 DOI: 10.3390/md20100612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
The widespread resistance to antibiotics in pathogenic bacteria makes the development of a new generation of antimicrobials an urgent task. The development of new antibiotics must be accompanied by a comprehensive study of all of their biological activities in order to avoid adverse side-effects from their application. Some promising antibiotic prototypes derived from the structures of arenicins, antimicrobial peptides from the lugworm Arenicola marina, have been developed. Previously, we described the ability of natural arenicins -1 and -2 to modulate the human complement system activation in vitro. In this regard, it seems important to evaluate the effect of therapeutically promising arenicin analogues on complement activation. Here, we describe the complement-modulating activity of three such analogues, Ar-1[V8R], ALP1, and AA139. We found that the mode of action of Ar-1[V8R] and ALP1 on the complement was similar to that of natural arenicins, which can both activate and inhibit the complement, depending on the concentration. However, Ar-1[V8R] behaved predominantly as an inhibitor, showing only a moderate increase in C3a production in the alternative pathway model and no enhancement at all of the classical pathway of complement activation. In contrast, the action of ALP1 was characterized by a marked increase in the complement activation through the classical pathway in the concentration range of 2.5–20 μg/mL. At the same time, at higher concentrations (80–160 μg/mL), this peptide exhibited a complement inhibitory effect characteristic of the other arenicins. Peptide AA139, like other arenicins, exhibited an inhibitory effect on complement at a concentration of 160 μg/mL, but was much less pronounced. Overall, our results suggest that the effect on the complement system should be taken into account in the development of antibiotics based on arenicins.
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Affiliation(s)
- Ilia A. Krenev
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
| | - Pavel V. Panteleev
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
| | - Ekaterina S. Umnyakova
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Nikolay P. Gorbunov
- Department of Molecular Genetics, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
| | - Valeria A. Kostevich
- Department of Molecular Genetics, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
| | - Sergey V. Balandin
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
| | - Tatiana V. Ovchinnikova
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia
- Department of Biotechnology, I.M. Sechenov First Moscow State Medical University, Trubetskaya Street, 8–2, 119991 Moscow, Russia
| | - Galina M. Aleshina
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
| | - Mikhail N. Berlov
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Academician Pavlov Street 12, 197376 Saint Petersburg, Russia
- Correspondence: ; Tel.: +7-911-936-9839
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Drurey C, Lindholm HT, Coakley G, Poveda MC, Löser S, Doolan R, Gerbe F, Jay P, Harris N, Oudhoff MJ, Maizels RM. Intestinal epithelial tuft cell induction is negated by a murine helminth and its secreted products. J Exp Med 2022; 219:e20211140. [PMID: 34779829 PMCID: PMC8597987 DOI: 10.1084/jem.20211140] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 09/20/2021] [Accepted: 10/27/2021] [Indexed: 02/06/2023] Open
Abstract
Helminth parasites are adept manipulators of the immune system, using multiple strategies to evade the host type 2 response. In the intestinal niche, the epithelium is crucial for initiating type 2 immunity via tuft cells, which together with goblet cells expand dramatically in response to the type 2 cytokines IL-4 and IL-13. However, it is not known whether helminths modulate these epithelial cell populations. In vitro, using small intestinal organoids, we found that excretory/secretory products (HpES) from Heligmosomoides polygyrus blocked the effects of IL-4/13, inhibiting tuft and goblet cell gene expression and expansion, and inducing spheroid growth characteristic of fetal epithelium and homeostatic repair. Similar outcomes were seen in organoids exposed to parasite larvae. In vivo, H. polygyrus infection inhibited tuft cell responses to heterologous Nippostrongylus brasiliensis infection or succinate, and HpES also reduced succinate-stimulated tuft cell expansion. Our results demonstrate that helminth parasites reshape their intestinal environment in a novel strategy for undermining the host protective response.
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Affiliation(s)
- Claire Drurey
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK
| | - Håvard T. Lindholm
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Gillian Coakley
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia
| | - Marta Campillo Poveda
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK
| | - Stephan Löser
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK
| | - Rory Doolan
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia
| | - François Gerbe
- Institut de Génomique Fonctionnelle, University of Montpellier, Centre national de la recherche scientifique UMR-5203, Institut National de la Santé et de la Recherche Médicale U1191, Montpellier, France
| | - Philippe Jay
- Institut de Génomique Fonctionnelle, University of Montpellier, Centre national de la recherche scientifique UMR-5203, Institut National de la Santé et de la Recherche Médicale U1191, Montpellier, France
| | - Nicola Harris
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Australia
| | - Menno J. Oudhoff
- Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Rick M. Maizels
- Wellcome Centre for Integrative Parasitology, Institute of Infection, Immunity and Inflammation, University of Glasgow, UK
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Corbet M, Pineda MA, Yang K, Tarafdar A, McGrath S, Nakagawa R, Lumb FE, Suckling CJ, Harnett W, Harnett MM. Epigenetic drug development for autoimmune and inflammatory diseases. PLoS Pathog 2021; 17:e1010069. [PMID: 34748611 PMCID: PMC8601611 DOI: 10.1371/journal.ppat.1010069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/18/2021] [Accepted: 10/27/2021] [Indexed: 01/21/2023] Open
Abstract
ES-62 is the major secreted protein of the parasitic filarial nematode, Acanthocheilonema viteae. The molecule exists as a large tetramer (MW, ~240kD), which possesses immunomodulatory properties by virtue of multiple phosphorylcholine (PC) moieties attached to N-type glycans. By suppressing inflammatory immune responses, ES-62 can prevent disease development in certain mouse models of allergic and autoimmune conditions, including joint pathology in collagen-induced arthritis (CIA), a model of rheumatoid arthritis (RA). Such protection is associated with functional suppression of "pathogenic" hyper-responsive synovial fibroblasts (SFs), which exhibit an aggressive inflammatory and bone-damaging phenotype induced by their epigenetic rewiring in response to the inflammatory microenvironment of the arthritic joint. Critically, exposure to ES-62 in vivo induces a stably-imprinted CIA-SF phenotype that exhibits functional responses more typical of healthy, Naïve-SFs. Consistent with this, ES-62 "rewiring" of SFs away from the hyper-responsive phenotype is associated with suppression of ERK activation, STAT3 activation and miR-155 upregulation, signals widely associated with SF pathogenesis. Surprisingly however, DNA methylome analysis of Naïve-, CIA- and ES-62-CIA-SF cohorts reveals that rather than simply preventing pathogenic rewiring of SFs, ES-62 induces further changes in DNA methylation under the inflammatory conditions pertaining in the inflamed joint, including targeting genes associated with ciliogenesis, to programme a novel "resolving" CIA-SF phenotype. In addition to introducing a previously unsuspected aspect of ES-62's mechanism of action, such unique behaviour signposts the potential for developing DNA methylation signatures predictive of pathogenesis and its resolution and hence, candidate mechanisms by which novel therapeutic interventions could prevent SFs from perpetuating joint inflammation and destruction in RA. Pertinent to these translational aspects of ES-62-behavior, small molecule analogues (SMAs) based on ES-62's active PC-moieties mimic the rewiring of SFs as well as the protection against joint disease in CIA afforded by the parasitic worm product.
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Affiliation(s)
- Marlene Corbet
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Miguel A. Pineda
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Kun Yang
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Anuradha Tarafdar
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Sarah McGrath
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Rinako Nakagawa
- Immunity and Cancer, Francis Crick Institute, London, United Kingdom
| | - Felicity E. Lumb
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Colin J. Suckling
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, United Kingdom
| | - William Harnett
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
- * E-mail: (MMH); (WH)
| | - Margaret M. Harnett
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
- * E-mail: (MMH); (WH)
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Lee YJ, Kim MJ, Jo S, Jin SH, Park PR, Park K, Song HC, Kim J, Kim JY, Shim SC, Kim TH, Hong SJ, Kang H, Kim TJ, Won EJ. Clonorchis sinensis-Derived Protein Attenuates Inflammation and New Bone Formation in Ankylosing Spondylitis. Front Immunol 2021; 12:615369. [PMID: 33717104 PMCID: PMC7947613 DOI: 10.3389/fimmu.2021.615369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/18/2021] [Indexed: 12/17/2022] Open
Abstract
Helminth infections and their components have been shown to have the potential to modulate and attenuate immune responses. The objective of this study was to evaluate the potential protective effects of Clonorchis sinensis-derived protein (CSp) on ankylosing spondylitis (AS). Cytotoxicity of CSp at different doses was assessed by MTS and flow cytometry before performing experiments. Peripheral blood mononuclear cells (PBMCs) and synovial fluid mononuclear cells (SFMCs) were obtained from AS patients. Inflammatory cytokine-producing cells were analyzed using flow cytometry. The levels of INF- γ , IL-17A, TNF-α, and IL-6 were measured by enzyme-linked immunosorbent assay (ELISA). SKG mice were treated with CSp or vehicles. Inflammation and new bone formation were evaluated using immunohistochemistry, positron emission tomography (PET), and micro-computed tomography (CT). Treatment with CSp resulted in no reduced cell viability of PBMCs or SFMCs until 24 h. In experiments culturing PBMCs and SFMCs, the frequencies of IFN- γ and IL-17A producing cells were significantly reduced after CSp treatment. In the SKG mouse model, CSp treatment significantly suppressed arthritis, enthesitis, and enteritis. Micro-CT analysis of hind paw revealed reduced new bone formation in CSp-treated mice than in vehicle-treated mice. We provide the first evidence demonstrating that CSp can ameliorate clinical signs and cytokine derangements in AS. In addition, such CSp treatment could reduce the new bone formation of AS.
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Affiliation(s)
- Yu Jeong Lee
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju, South Korea
| | - Moon-Ju Kim
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju, South Korea
| | - Sungsin Jo
- Department of Rheumatology, Hanyang University Institute for Rheumatology Research, Seoul, South Korea
| | - So-Hee Jin
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Pu-Reum Park
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Kijeong Park
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Ji-Young Kim
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, South Korea
| | - Seung Cheol Shim
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, South Korea
| | - Tae-Hwan Kim
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea
| | - Sung-Jong Hong
- Department of Medical Environmental Biology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Hyundeok Kang
- Department of Biomedical Systems Informatics, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Tae-Jong Kim
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, South Korea
| | - Eun Jeong Won
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju, South Korea
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5
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van der Zande HJ, Gonzalez MA, de Ruiter K, Wilbers RH, García‐Tardón N, van Huizen M, van Noort K, Pelgrom LR, Lambooij JM, Zawistowska‐Deniziak A, Otto F, Ozir‐Fazalalikhan A, van Willigen D, Welling M, Poles J, van Leeuwen F, Hokke CH, Schots A, Yazdanbakhsh M, Loke P, Guigas B. The helminth glycoprotein omega-1 improves metabolic homeostasis in obese mice through type 2 immunity-independent inhibition of food intake. FASEB J 2021; 35:e21331. [PMID: 33476078 PMCID: PMC7898285 DOI: 10.1096/fj.202001973r] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/27/2020] [Accepted: 12/14/2020] [Indexed: 02/06/2023]
Abstract
Type 2 immunity plays an essential role in the maintenance of metabolic homeostasis and its disruption during obesity promotes meta-inflammation and insulin resistance. Infection with the helminth parasite Schistosoma mansoni and treatment with its soluble egg antigens (SEA) induce a type 2 immune response in metabolic organs and improve insulin sensitivity and glucose tolerance in obese mice, yet, a causal relationship remains unproven. Here, we investigated the effects and underlying mechanisms of the T2 ribonuclease omega-1 (ω1), one of the major S mansoni immunomodulatory glycoproteins, on metabolic homeostasis. We show that treatment of obese mice with plant-produced recombinant ω1, harboring similar glycan motifs as present on the native molecule, decreased body fat mass, and improved systemic insulin sensitivity and glucose tolerance in a time- and dose-dependent manner. This effect was associated with an increase in white adipose tissue (WAT) type 2 T helper cells, eosinophils, and alternatively activated macrophages, without affecting type 2 innate lymphoid cells. In contrast to SEA, the metabolic effects of ω1 were still observed in obese STAT6-deficient mice with impaired type 2 immunity, indicating that its metabolic effects are independent of the type 2 immune response. Instead, we found that ω1 inhibited food intake, without affecting locomotor activity, WAT thermogenic capacity or whole-body energy expenditure, an effect also occurring in leptin receptor-deficient obese and hyperphagic db/db mice. Altogether, we demonstrate that while the helminth glycoprotein ω1 can induce type 2 immunity, it improves whole-body metabolic homeostasis in obese mice by inhibiting food intake via a STAT6-independent mechanism.
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Affiliation(s)
| | - Michael A. Gonzalez
- Department of MicrobiologyNew York University School of MedicineNew YorkNYUSA
| | - Karin de Ruiter
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Ruud H.P. Wilbers
- Department Laboratory of NematologyWageningen University and ResearchWageningenThe Netherlands
| | - Noemí García‐Tardón
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Mariska van Huizen
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Kim van Noort
- Department Laboratory of NematologyWageningen University and ResearchWageningenThe Netherlands
| | - Leonard R. Pelgrom
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Joost M. Lambooij
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Anna Zawistowska‐Deniziak
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
- Witold Stefański Institute of ParasitologyPolish Academy of SciencesWarsawPoland
| | - Frank Otto
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | | | - Danny van Willigen
- Interventional Molecular Imaging LaboratoryDepartment of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Mick Welling
- Interventional Molecular Imaging LaboratoryDepartment of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Jordan Poles
- Department of MicrobiologyNew York University School of MedicineNew YorkNYUSA
| | - Fijs van Leeuwen
- Interventional Molecular Imaging LaboratoryDepartment of RadiologyLeiden University Medical CenterLeidenThe Netherlands
| | - Cornelis H. Hokke
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - Arjen Schots
- Department Laboratory of NematologyWageningen University and ResearchWageningenThe Netherlands
| | - Maria Yazdanbakhsh
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
| | - P'ng Loke
- Department of MicrobiologyNew York University School of MedicineNew YorkNYUSA
- Laboratory of Parasitic DiseasesNational Institute of Allergy and Infectious DiseasesNational Institutes of HealthBethesdaMDUSA
| | - Bruno Guigas
- Department of ParasitologyLeiden University Medical CenterLeidenThe Netherlands
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6
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Krenev IA, Umnyakova ES, Eliseev IE, Dubrovskii YA, Gorbunov NP, Pozolotin VA, Komlev AS, Panteleev PV, Balandin SV, Ovchinnikova TV, Shamova OV, Berlov MN. Antimicrobial Peptide Arenicin-1 Derivative Ar-1-(C/A) as Complement System Modulator. Mar Drugs 2020; 18:md18120631. [PMID: 33321960 PMCID: PMC7764584 DOI: 10.3390/md18120631] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/27/2020] [Accepted: 12/08/2020] [Indexed: 12/25/2022] Open
Abstract
Antimicrobial peptides (AMPs) are not only cytotoxic towards host pathogens or cancer cells but also are able to act as immunomodulators. It was shown that some human and non-human AMPs can interact with complement proteins and thereby modulate complement activity. Thus, AMPs could be considered as the base for complement-targeted therapeutics development. Arenicins from the sea polychaete Arenicola marina, the classical example of peptides with a β-hairpin structure stabilized by a disulfide bond, were shown earlier to be among the most prospective regulators. Here, we investigate the link between arenicins' structure and their antimicrobial, hemolytic and complement-modulating activities using the derivative Ar-1-(C/A) without a disulfide bond. Despite the absence of this bond, the peptide retains all important functional activities and also appears less hemolytic in comparison with the natural forms. These findings could help to investigate new complement drugs for regulation using arenicin derivatives.
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Affiliation(s)
- Ilia A. Krenev
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
- Faculty of Chemistry, Saint Petersburg State University, Universitetskaya Emb, 7/9, 199034 Saint Petersburg, Russia;
| | - Ekaterina S. Umnyakova
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
- Correspondence: ; Tel.: +7-981-971-4975
| | - Igor E. Eliseev
- Nanobiotechnology Laboratory, Alferov University, Khlopin Str. 8/3, 194021 Saint Petersburg, Russia;
| | - Yaroslav A. Dubrovskii
- Faculty of Chemistry, Saint Petersburg State University, Universitetskaya Emb, 7/9, 199034 Saint Petersburg, Russia;
- Almazov National Medical Research Centre, Akkuratov Str, 2, 197341 Saint Petersburg, Russia
| | - Nikolay P. Gorbunov
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
| | - Vladislav A. Pozolotin
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
| | - Alexei S. Komlev
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
| | - Pavel V. Panteleev
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (P.V.P.); (S.V.B.); (T.V.O.)
| | - Sergey V. Balandin
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (P.V.P.); (S.V.B.); (T.V.O.)
| | - Tatiana V. Ovchinnikova
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia; (P.V.P.); (S.V.B.); (T.V.O.)
- Department of Biotechnology, I.M. Sechenov First Moscow State Medical University, Trubetskaya Str., 8-2, 119991 Moscow, Russia
| | - Olga V. Shamova
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
| | - Mikhail N. Berlov
- Department of General Pathology and Pathological Physiology, Institute of Experimental Medicine, Acad. Pavlov Str. 12, 197376 Saint Petersburg, Russia; (I.A.K.); (N.P.G.); (V.A.P.); (A.S.K.); (O.V.S.); (M.N.B.)
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7
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Tinyou A, Chaimon S, Phuphisut O, Kobpornchai P, Malaithong P, Poodeepiyasawat A, Ieamsuwan I, Ruangsittichai J, Pumirat P, Dekumyoy P, Reamtong O, Adisakwattana P. Molecular cloning and characterization of serine protease inhibitor from food-borne nematode, Gnathostoma spinigerum. Acta Trop 2020; 204:105288. [PMID: 31811864 DOI: 10.1016/j.actatropica.2019.105288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 11/01/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023]
Abstract
Gnathostoma spinigerum is a causative agent of human gnathostomiasis and infects people residing in endemic areas as well as travelers. Cutaneous and visceral larval migrants cause clinical manifestations, resulting in severe morbidity and mortality. To survive in hosts, these parasites have evolved various immune evasion mechanisms, including the release of regulatory molecules. Serine protease inhibitors (serpins) that are present in many parasitic helminths are proteins suspected of suppressing host serine protease-related digestion and immune responses. In this study, the serpin secreted by G. spinigerum (GsSerp) was characterized using bioinformatics and molecular biology techniques. The bioinformatics revealed that GsSerp contains 9 helices, 3 β-sheets, and a reactive central loop, which are conserved structures of the serpin superfamily. Recombinant GsSerp (rGsSerp) was expressed in E. coli (molecular weight, 39 kDa) and could inhibit chymotrypsin. Mouse polyclonal antibody against GsSerp could detect the native GsSerp in crude worm antigen but not the excretory-secretory product (ES) of infective-stage larva (aL3Gs). Moreover, the expression of GsSerp in the aL3Gs tissue was located in the hemolymph and intestinal tissue, indicating its role in parasite homeostasis. Our findings may help develop effective strategies for preventing and controlling gnathostomiasis.
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Affiliation(s)
- Anusorn Tinyou
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Salisa Chaimon
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Orawan Phuphisut
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Porntida Kobpornchai
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Preeyarat Malaithong
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Akkarin Poodeepiyasawat
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Issariya Ieamsuwan
- Faculty of Medical Technology, Huachiew Chalermprakiet University, Samut Prakan 10540, Thailand
| | - Jiraporn Ruangsittichai
- Department of Medical Entomology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Pornpan Pumirat
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Paron Dekumyoy
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Poom Adisakwattana
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
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8
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Zhang XZ, Sun XY, Bai Y, Song YY, Hu CX, Li X, Cui J, Wang ZQ. Protective immunity in mice vaccinated with a novel elastase-1 significantly decreases Trichinella spiralis fecundity and infection. Vet Res 2020; 51:43. [PMID: 32169101 PMCID: PMC7071723 DOI: 10.1186/s13567-020-00767-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 03/03/2020] [Indexed: 12/29/2022] Open
Abstract
Trichinella spiralis is an important foodborne parasitic nematode that represents an enormous threat to the food safety of pork meat. The development of a preventive vaccine is valuable for the prevention and control of Trichinella infection in domestic pigs to ensure pork safety. Elastase is a trypsin-like serine protease that hydrolyzes the host's diverse tissue components and participates in parasite penetration, and it might be a novel vaccine target molecule. The aim of this study was to assess the protective immunity produced by vaccination with a novel Trichinella spiralis elastase-1 (TsE) in a mouse model. The results demonstrate that subcutaneous vaccination of mice with rTsE elicited a systemic humoral response (high levels of serum IgG and subclass IgG1/IgG2a and IgA) and significant local enteral mucosal sIgA responses. Anti-rTsE IgG recognized the native TsE at the cuticle, stichosome of intestinal infective larvae and adult worm (AW), and intrauterine embryos of female AW. The rTsE vaccination also produced a systemic and local mixed Th1/Th2 response, as demonstrated by clear elevation levels of Th1 cytokines (IFN-γ, IL-2) and Th2 cytokines (IL-4, IL-10) after spleen, mesenteric lymph node and Peyer's patch cells from immunized mice were stimulated with rTsE. The immunized mice exhibited a 52.19% reduction in enteral AW and a 64.06% reduction in muscle larvae after challenge infection. The immune response triggered by rTsE vaccination protected enteral mucosa from larval intrusion, suppressed larval development and reduced female fecundity. The results indicate that TsE may represent a novel target molecule for anti-T. spiralis vaccines.
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Affiliation(s)
- Xin Zhuo Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiang Yuan Sun
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
| | - Ying Bai
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
| | - Yan Yan Song
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
| | - Chen Xi Hu
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
| | - Xiangrui Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jing Cui
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
| | - Zhong Quan Wang
- Department of Parasitology, Medical College, Zhengzhou University, Zhengzhou, 450052 China
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9
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Sarazin A, Dendooven A, Delbeke M, Gatault S, Pagny A, Standaert A, Rousseaux C, Desreumaux P, Dubuquoy L, Capron M. Treatment with P28GST, a schistosome-derived enzyme, after acute colitis induction in mice: Decrease of intestinal inflammation associated with a down regulation of Th1/Th17 responses. PLoS One 2018; 13:e0209681. [PMID: 30592734 PMCID: PMC6310452 DOI: 10.1371/journal.pone.0209681] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/10/2018] [Indexed: 12/22/2022] Open
Abstract
Background P28GST, a 28Kd glutathione S-transferase enzymatic protein derived from a schistosome helminth prevents experimental colitis when administered subcutaneously in the presence of adjuvant by decreasing pro-inflammatory Th1/Th17 response. Given the antioxidant properties of P28GST, we evaluated its anti-inflammatory potential when administered locally after colitis induction in the absence of adjuvant. Methods Colitis was induced in BALB/c mice by rectal administration of TNBS, followed by two intraperitoneal injections of P28GST at day 1 and day 2. Mice were sacrificed 48h after TNBS administration and evaluated for macroscopic and histological scores, myeloperoxidase (MPO) quantification and cytokine messenger RNA expression in the colonic tissues. Results Both clinical and histological scores significantly decreased in mice treated with P28GST at 5 or 50μg/kg when compared to vehicle- treated mice. A significant reduction of MPO was detected in colonic tissues from P28GST–treated mice, similarly to mice treated with methylprednisolone as the reference treatment. Pro-inflammatory cytokines TNF, IL-1β, and IL-6, mRNA as well as serum levels were down-regulated in mice colonic tissues treated with P28GST at 5 or 50μg/kg. In addition, a significant decrease of mRNA expression levels of T-bet, and ROR-γ, respective markers of Th1 and Th17 cells was observed. Whereas no significant effect was detected on Gata3 mRNA, a marker of Th2 cells, the Arg/iNOS mRNA levels significantly increased in P28GST-treated mice, suggesting the induction of M2 macrophages. Conclusions These findings provide evidence that P28GST injected locally after colitis induction induces a potent decrease of colitis inflammation in mice, associated to downregulation of Th1/Th17 response, and induction of anti-inflammatory alternatively activated macrophages.
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Affiliation(s)
- Aurore Sarazin
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Arnaud Dendooven
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Marie Delbeke
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Solène Gatault
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Aurélien Pagny
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Annie Standaert
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | | | - Pierre Desreumaux
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Laurent Dubuquoy
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
| | - Monique Capron
- Univ. Lille, Inserm, CHU Lille, U995 – LIRIC – Lille Inflammation Research International Center, Lille, France
- * E-mail:
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10
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Umnyakova ES, Gorbunov NP, Zhakhov AV, Krenev IA, Ovchinnikova TV, Kokryakov VN, Berlov MN. Modulation of Human Complement System by Antimicrobial Peptide Arenicin-1 from Arenicola marina. Mar Drugs 2018; 16:E480. [PMID: 30513754 PMCID: PMC6315390 DOI: 10.3390/md16120480] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/13/2018] [Accepted: 11/27/2018] [Indexed: 12/27/2022] Open
Abstract
Antimicrobial peptides from marine invertebrates are known not only to act like cytotoxic agents, but they also can display some additional activities in mammalian organisms. In particular, these peptides can modulate the complement system as was described for tachyplesin, a peptide from the horseshoe crab. In this work, we investigated the influence on complement activation of the antimicrobial peptide arenicin-1 from the marine polychaete Arenicola marina. To study effects of arenicin on complement activation in human blood serum, we used hemolytic assays of two types, with antibody sensitized sheep erythrocytes and rabbit erythrocytes. Complement activation was also assessed, by the level of C3a production that was measured by ELISA. We found that the effect of arenicin depends on its concentration. At relatively low concentrations the peptide stimulates complement activation and lysis of target erythrocytes, whereas at higher concentrations arenicin acts as a complement inhibitor. A hypothetical mechanism of peptide action is proposed, suggesting its interaction with two complement proteins, C1q and C3. The results lead to the possibility of the development of new approaches for therapy of diseases connected with complement dysregulation, using peptide regulators derived from natural antimicrobial peptides of invertebrates.
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Affiliation(s)
- Ekaterina S Umnyakova
- Institute of Experimental Medicine, Acad. Pavlov Str. 12, Saint Petersburg 197376, Russia.
| | - Nikolay P Gorbunov
- Institute of Experimental Medicine, Acad. Pavlov Str. 12, Saint Petersburg 197376, Russia.
- Research Institute of Highly Pure Biopreparations, Pudozhskaya Str., 7, Saint Petersburg 197110, Russia.
| | - Alexander V Zhakhov
- Research Institute of Highly Pure Biopreparations, Pudozhskaya Str., 7, Saint Petersburg 197110, Russia.
| | - Ilia A Krenev
- Department of Biochemistry, Saint-Petersburg State University, Universitetskaya Embankment, 7/9, Saint-Petersburg 199034, Russia.
| | - Tatiana V Ovchinnikova
- M.M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, Moscow 117997, Russia.
| | - Vladimir N Kokryakov
- Institute of Experimental Medicine, Acad. Pavlov Str. 12, Saint Petersburg 197376, Russia.
- Department of Biochemistry, Saint-Petersburg State University, Universitetskaya Embankment, 7/9, Saint-Petersburg 199034, Russia.
| | - Mikhail N Berlov
- Institute of Experimental Medicine, Acad. Pavlov Str. 12, Saint Petersburg 197376, Russia.
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11
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Doonan J, Lumb FE, Pineda MA, Tarafdar A, Crowe J, Khan AM, Suckling CJ, Harnett MM, Harnett W. Protection Against Arthritis by the Parasitic Worm Product ES-62, and Its Drug-Like Small Molecule Analogues, Is Associated With Inhibition of Osteoclastogenesis. Front Immunol 2018; 9:1016. [PMID: 29867986 PMCID: PMC5967578 DOI: 10.3389/fimmu.2018.01016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 04/23/2018] [Indexed: 12/20/2022] Open
Abstract
The immunomodulatory actions of parasitic helminth excretory-secretory (ES) products that serendipitously protect against development of chronic inflammatory disorders are well established: however, knowledge of the interaction between ES products and the host musculoskeletal system in such diseases is limited. In this study, we have focused on ES-62, a glycoprotein secreted by the rodent filarial nematode Acanthocheilonema viteae that is immunomodulatory by virtue of covalently attached phosphorylcholine (PC) moieties, and also two synthetic drug-like PC-based small molecule analogues (SMAs) that mimic ES-62's immunomodulatory activity. We have previously shown that each of these molecules prevents development of pathology in collagen-induced arthritis (CIA), a model of the musculoskeletal disease rheumatoid arthritis (RA) and reflecting this, we now report that ES-62 and its SMAs, modify bone remodeling by altering bone marrow progenitors and thus impacting on osteoclastogenesis. Consistent with this, we find that these molecules inhibit functional osteoclast differentiation in vitro. Furthermore, this appears to be achieved by induction of anti-oxidant response gene expression, thereby resulting in reduction of the reactive oxygen species production that is necessary for the increased osteoclastogenesis witnessed in musculoskeletal diseases like RA.
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Affiliation(s)
- James Doonan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Felicity E. Lumb
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Miguel A. Pineda
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Anuradha Tarafdar
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Jenny Crowe
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Aneesah M. Khan
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - Colin J. Suckling
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, United Kingdom
| | - Margaret M. Harnett
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom
| | - William Harnett
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
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12
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Leontovyč A, Ulrychová L, O’Donoghue AJ, Vondrášek J, Marešová L, Hubálek M, Fajtová P, Chanová M, Jiang Z, Craik CS, Caffrey CR, Mareš M, Dvořák J, Horn M. SmSP2: A serine protease secreted by the blood fluke pathogen Schistosoma mansoni with anti-hemostatic properties. PLoS Negl Trop Dis 2018; 12:e0006446. [PMID: 29677188 PMCID: PMC5931690 DOI: 10.1371/journal.pntd.0006446] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 05/02/2018] [Accepted: 04/11/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Serine proteases are important virulence factors for many pathogens. Recently, we discovered a group of trypsin-like serine proteases with domain organization unique to flatworm parasites and containing a thrombospondin type 1 repeat (TSR-1). These proteases are recognized as antigens during host infection and may prove useful as anthelminthic vaccines, however their molecular characteristics are under-studied. Here, we characterize the structural and proteolytic attributes of serine protease 2 (SmSP2) from Schistosoma mansoni, one of the major species responsible for the tropical infectious disease, schistosomiasis. METHODOLOGY/PRINCIPAL FINDINGS SmSP2 comprises three domains: a histidine stretch, TSR-1 and a serine protease domain. The cleavage specificity of recombinant SmSP2 was determined using positional scanning and multiplex combinatorial libraries and the determinants of specificity were identified with 3D homology models, demonstrating a trypsin-like endopeptidase mode of action. SmSP2 displayed restricted proteolysis on protein substrates. It activated tissue plasminogen activator and plasminogen as key components of the fibrinolytic system, and released the vasoregulatory peptide, kinin, from kininogen. SmSP2 was detected in the surface tegument, esophageal glands and reproductive organs of the adult parasite by immunofluorescence microscopy, and in the excretory/secretory products by immunoblotting. CONCLUSIONS/SIGNIFICANCE The data suggest that SmSP2 is secreted, functions at the host-parasite interface and contributes to the survival of the parasite by manipulating host vasodilatation and fibrinolysis. SmSP2 may be, therefore, a potential target for anti-schistosomal therapy.
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Affiliation(s)
- Adrian Leontovyč
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Lenka Ulrychová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Anthony J. O’Donoghue
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, United States of America
| | - Jiří Vondrášek
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
| | - Lucie Marešová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Hubálek
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
| | - Pavla Fajtová
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marta Chanová
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Zhenze Jiang
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, United States of America
| | - Charles S. Craik
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA, United States of America
| | - Conor R. Caffrey
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, United States of America
| | - Michael Mareš
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
| | - Jan Dvořák
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
- * E-mail: (MH); (JD)
| | - Martin Horn
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
- * E-mail: (MH); (JD)
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13
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Suckling CJ, Alam S, Olson MA, Saikh KU, Harnett MM, Harnett W. Small Molecule Analogues of the parasitic worm product ES-62 interact with the TIR domain of MyD88 to inhibit pro-inflammatory signalling. Sci Rep 2018; 8:2123. [PMID: 29391452 PMCID: PMC5794923 DOI: 10.1038/s41598-018-20388-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/15/2018] [Indexed: 01/01/2023] Open
Abstract
ES-62 is a protein secreted by the parasitic worm Acanthocheilonema viteae that is anti-inflammatory by virtue of covalently attached phosphorylcholine. Previously we have reported that drug-like Small Molecule Analogues (SMAs) of its phosphorylcholine moiety can mimic ES-62 in protecting against disease development in certain mouse models of autoimmune and allergic conditions, due to them causing partial degradation of the TLR/IL-1R adaptor MyD88. We have now taken a molecular modelling approach to investigating the mechanism underlying this effect and this predicts that the SMAs interact directly with the MyD88 TIR domain. Further support for this is provided by assay of LPS-induced MyD88/NF-κB-driven secreted alkaline phosphatase (SEAP) reporter activity in commercially-available stably transfected (TLR4-MD2-NF-κB-SEAP) HEK293 cells, as SMA12b-mediated inhibition of such SEAP activity is blocked by its pre-incubation with recombinant MyD88-TIR domain. Direct binding of SMA12b to the TIR domain is also shown to inhibit homo-dimerization of the adaptor, an event that can explain the observed degradation of the adaptor and inhibition of subsequent downstream signalling. Thus, these new data identify initial events by which drug-like ES-62 SMAs, which we also demonstrate are able to inhibit cytokine production by human cells, homeostatically maintain "safe" levels of MyD88 signalling.
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Affiliation(s)
- Colin J Suckling
- WestCHEM Research School, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, UK
| | - Shahabuddin Alam
- Department of Immunology, Molecular and Translational Sciences Division, Army Medical Research Institute of Infectious Diseases, Frederick, MD, 21702, USA
| | - Mark A Olson
- Department of Cell Biology and Biochemistry, Molecular and Translational Sciences Division, Army Medical Research Institute of Infectious Diseases, Frederick, MD, 21702, USA
| | - Kamal U Saikh
- Department of Immunology, Molecular and Translational Sciences Division, Army Medical Research Institute of Infectious Diseases, Frederick, MD, 21702, USA
| | - Margaret M Harnett
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, G12 8TA, UK.
| | - William Harnett
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, G4 0RE, UK.
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14
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Masamba P, Adenowo AF, Oyinloye BE, Kappo AP. Universal Stress Proteins as New Targets for Environmental and Therapeutic Interventions of Schistosomiasis. Int J Environ Res Public Health 2016; 13:E972. [PMID: 27706050 PMCID: PMC5086711 DOI: 10.3390/ijerph13100972] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/24/2016] [Accepted: 09/27/2016] [Indexed: 12/22/2022]
Abstract
In spite of various control measures and eradication methods that have been in progress, schistosomiasis still prevails as one of the most prevalent debilitating parasitic diseases, typically affecting the poor and the underprivileged that are predominantly concentrated in sub-Saharan Africa. The parasitic schistosome blood fluke responsible for causing the disease completes its complex developmental cycle in two hosts: humans and freshwater snails, where they physically undergo gross modifications to endure the different conditions associated with each host. Just like any other organism, the worm possesses mechanisms that help them respond to environmental insults. It has been hypothesized that a special class of proteins known as Universal Stress Proteins (USPs) are up-regulated during sudden environmental changes, thus assisting the worm to tolerate the unfavourable conditions associated with its developmental cycle. The position of praziquantel as the drug of choice against all schistosome infections has been deemed vulnerable due to mounting concerns over drug pressure and so the need for alternative treatment is now a matter of urgency. Therefore, this review seeks to explore the associations and possible roles of USPs in schistosomiasis as well as the functioning of these proteins in the schistosomulae stage in order to develop new therapeutic interventions against this disease.
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Affiliation(s)
- Priscilla Masamba
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Abiola Fatimah Adenowo
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
| | - Babatunji Emmanuel Oyinloye
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
- Department of Biochemistry, Afe Babalola University, PMB 5454, Ado-Ekiti 360001, Nigeria.
| | - Abidemi Paul Kappo
- Biotechnology and Structural Biochemistry (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa 3886, South Africa.
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15
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Schuijs MJ, Hartmann S, Selkirk ME, Roberts LB, Openshaw PJM, Schnoeller C. The Helminth-Derived Immunomodulator AvCystatin Reduces Virus Enhanced Inflammation by Induction of Regulatory IL-10+ T Cells. PLoS One 2016; 11:e0161885. [PMID: 27560829 PMCID: PMC4999285 DOI: 10.1371/journal.pone.0161885] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 08/12/2016] [Indexed: 12/20/2022] Open
Abstract
Respiratory Syncytial Virus (RSV) is a major pathogen causing low respiratory tract disease (bronchiolitis), primarily in infants. Helminthic infections may alter host immune responses to both helminths and to unrelated immune triggers. For example, we have previously shown that filarial cystatin (AvCystatin/Av17) ameliorates allergic airway inflammation. However, helminthic immunomodulators have so far not been tested in virus-induced disease. We now report that AvCystatin prevents Th2-based immunopathology in vaccine-enhanced RSV lung inflammation, a murine model for bronchiolitis. AvCystatin ablated eosinophil influx, reducing both weight loss and neutrophil recruitment without impairing anti-viral immune responses. AvCystatin also protected mice from excessive inflammation following primary RSV infection, significantly reducing neutrophil influx and cytokine production in the airways. Interestingly, we found that AvCystatin induced an influx of CD4+ FoxP3+ interleukin-10-producing T cells in the airway and lungs, correlating with immunoprotection, and the corresponding cells could also be induced by adoptive transfer of AvCystatin-primed F4/80+ macrophages. Thus, AvCystatin ameliorates enhanced RSV pathology without increasing susceptibility to, or persistence of, viral infection and warrants further investigation as a possible therapy for virus-induced airway disease.
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Affiliation(s)
- Martijn J. Schuijs
- Respiratory Science Division, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Susanne Hartmann
- Centre for Infection Medicine, Institute for Immunology, Freie Universität Berlin, Berlin, Germany
| | - Murray E. Selkirk
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Luke B. Roberts
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Peter J. M. Openshaw
- Respiratory Science Division, National Heart and Lung Institute, Imperial College London, London, United Kingdom
- * E-mail: (CS); (PJMO)
| | - Corinna Schnoeller
- Respiratory Science Division, National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Department of Life Sciences, Imperial College London, London, United Kingdom
- * E-mail: (CS); (PJMO)
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Li HH, He WX, Song D, Wu Q, Li N, Wan YK, Zhang H, Qiu DP, Chu L, Wang LY, Yang XD, Fang Q. [Effect of Trichinella spiralis and its worm-derived proteins on CLP-induced sepsis in mice]. Nan Fang Yi Ke Da Xue Xue Bao 2016; 36:1048-1054. [PMID: 27578571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To observe the effect of Trichinella spiralis and its worm-derived proteins on cecal ligation and puncture (CLP)-induced sepsis in mice. METHODS Eighty male BALB/c mice were randomly divided into sham-operated group, CLP group, Trichinella spiralis muscle larvae (ML) pre-infection group (ML+CLP group), soluble muscle larvae proteins (SMP) treatment group (SMP+CLP group) and excretory-secretory proteins (MES) treatment group (MES+CLP group). In ML+CLP group, the mice were orally infected with 300 Trichinella spiralis muscle larvae at 28 days before CLP and those in the other groups were intraperitioneally injected with PBS or SMP (25 µg/mice) or MES (25µg/mice) 30 min after CLP. The general condition and 72-h survival after CLP of the mice were observed. The levels of alanine transaminase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), creatinine (Cr), TNF-α, IL-6, IL-1β, IL-10 and TGF-β were measured at 12 h after the operation, and the pathological changes of the liver and kidney were observed. RESULTS s Compared with the sham-operated mice, the mice in CLP group showed decreased 72-h survival, obviously increased ALT, AST, BUN, Cr, TNF-α, IL-6, IL-1β, IL-10, and TGF-β with hepatic cords disorder, hepatocytes swelling, glomerulus shrinkage, and renal tubular cell edema. Compared with CLP group, the mice in ML+CLP group showed lowered levels of ALT, AST, Cr, TNF-α and IL-1β and increased levels of IL-10 and TGF-β; in SMP+CLP group, the levels of ALT, AST, Cr, TNF-α and IL-1β were decreased and TGF-β increased. In MES+CLP group, the mice showed obviously increased 72-h survival with lowered levels of ALT, AST, BUN, Cr, TNF-α, IL-6 and IL-1β, increased levels of IL-10 and TGF-β, and alleviated liver and kidney damages. CONCLUSION Trichinella spiralis and its worm-derived proteins can decrease the levels of pro-inflammatory cytokines and increase immunomodulatory cytokines, and MES has more potent effect to reduce structural and functional damages of the liver and kidney.
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Affiliation(s)
- Hui-Hui Li
- Department of Histology and Embryology, Bengbu Medical College, Bengbu 233000, China. E-mail:
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Zhang Z, Mao Y, Li D, Zhang Y, Li W, Jia H, Zheng J, Li L, Lu Y. High-level expression and characterization of two serine protease inhibitors from Trichinella spiralis. Vet Parasitol 2016; 219:34-9. [PMID: 26921036 DOI: 10.1016/j.vetpar.2016.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 11/18/2022]
Abstract
Serine protease inhibitors (SPIs) play important roles in tissue homeostasis, cell survival, development, and host defense. So far, SPIs have been identified from various organisms, such as animals, plants, bacteria, poxviruses, and parasites. In this study, two SPIs (Tsp03044 and TspAd5) were identified from the genome of Trichinella spiralis and expressed in Escherichia coli. Sequence analysis revealed that these two SPIs contained essential structural motifs, which were well conserved within the tumor-infiltrating lymphocytes (TIL) and serpin superfamily. Based on protease inhibition assays, the recombinant Tsp03044 showed inhibitory effects on trypsin, α-chymotrypsin, and pepsin, while the recombinant TspAd5 could effectively inhibit the activities of α-chymotrypsin and pepsin. Both these inhibitors showed activity between 28 and 48 °C. The expression levels of the two SPIs were also determined at different developmental stages of the parasite with real-time PCR. Our results indicate that Tsp03044 and TspAd5 are functional serine protease inhibitors.
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Affiliation(s)
- Zhaoxia Zhang
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Yixian Mao
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Da Li
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Yvhan Zhang
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Wei Li
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Honglin Jia
- State Key Laboratory of Veterinary Biotechnology-Michigan State University Joint Laboratory of Innate Immunity, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Maduan Street 427, Nangang District, Harbin 150001, PR China
| | - Jun Zheng
- State Key Laboratory of Veterinary Biotechnology-Michigan State University Joint Laboratory of Innate Immunity, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Maduan Street 427, Nangang District, Harbin 150001, PR China
| | - Li Li
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China
| | - Yixin Lu
- Key Laboratory of Animal Common Disease Prevention, College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Harbin 150030, PR China.
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Rzepecka J, Pineda MA, Al-Riyami L, Rodgers DT, Huggan JK, Lumb FE, Khalaf AI, Meakin PJ, Corbet M, Ashford ML, Suckling CJ, Harnett MM, Harnett W. Prophylactic and therapeutic treatment with a synthetic analogue of a parasitic worm product prevents experimental arthritis and inhibits IL-1β production via NRF2-mediated counter-regulation of the inflammasome. J Autoimmun 2015; 60:59-73. [PMID: 25975491 PMCID: PMC4459730 DOI: 10.1016/j.jaut.2015.04.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/10/2015] [Accepted: 04/12/2015] [Indexed: 02/06/2023]
Abstract
Rheumatoid arthritis (RA) remains a debilitating autoimmune condition as many patients are refractory to existing conventional and biologic therapies, and hence successful development of novel treatments remains a critical requirement. Towards this, we now describe a synthetic drug-like small molecule analogue, SMA-12b, of an immunomodulatory parasitic worm product, ES-62, which acts both prophylactically and therapeutically against collagen-induced arthritis (CIA) in mice. Mechanistic analysis revealed that SMA-12b modifies the expression of a number of inflammatory response genes, particularly those associated with the inflammasome in mouse bone marrow-derived macrophages and indeed IL-1β was the most down-regulated gene. Consistent with this, IL-1β was significantly reduced in the joints of mice with CIA treated with SMA-12b. SMA-12b also increased the expression of a number of genes associated with anti-oxidant responses that are controlled by the transcription factor NRF2 and critically, was unable to inhibit expression of IL-1β by macrophages derived from the bone marrow of NRF2(-/-) mice. Collectively, these data suggest that SMA-12b could provide the basis of an entirely novel approach to fulfilling the urgent need for new treatments for RA.
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Affiliation(s)
- Justyna Rzepecka
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0NR, UK.
| | - Miguel A Pineda
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, UK.
| | - Lamyaa Al-Riyami
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0NR, UK.
| | - David T Rodgers
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, UK.
| | - Judith K Huggan
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1Xl, UK.
| | - Felicity E Lumb
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0NR, UK.
| | - Abedawn I Khalaf
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1Xl, UK.
| | - Paul J Meakin
- Division of Cardiovascular & Diabetes Medicine, Medical Research Institute, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK.
| | - Marlene Corbet
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, UK.
| | - Michael L Ashford
- Division of Cardiovascular & Diabetes Medicine, Medical Research Institute, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK.
| | - Colin J Suckling
- Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow G1 1Xl, UK.
| | - Margaret M Harnett
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, UK.
| | - William Harnett
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0NR, UK.
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Ma D, Francischetti IMB, Ribeiro JMC, Andersen JF. The structure of hookworm platelet inhibitor (HPI), a CAP superfamily member from Ancylostoma caninum. Acta Crystallogr F Struct Biol Commun 2015; 71:643-9. [PMID: 26057788 PMCID: PMC4461323 DOI: 10.1107/s2053230x1500271x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 02/09/2015] [Indexed: 11/11/2022] Open
Abstract
Secreted protein components of hookworm species include a number of representatives of the cysteine-rich/antigen 5/pathogenesis-related 1 (CAP) protein family known as Ancylostoma-secreted proteins (ASPs). Some of these have been considered as candidate antigens for the development of vaccines against hookworms. The functions of most CAP superfamily members are poorly understood, but one form, the hookworm platelet inhibitor (HPI), has been isolated as a putative antagonist of the platelet integrins αIIbβ3 and α2β1. Here, the crystal structure of HPI is described and its structural features are examined in relation to its possible function. The HPI structure is similar to those of other ASPs and shows incomplete conservation of the sequence motifs CAP1 and CAP2 that are considered to be diagnostic of CAP superfamily members. The asymmetric unit of the HPI crystal contains a dimer with an extensive interaction interface, but chromatographic measurements indicate that it is primarily monomeric in solution. In the dimeric structure, the putative active-site cleft areas from both monomers are united into a single negatively charged depression. A potential Lys-Gly-Asp disintegrin-like motif was identified in the sequence of HPI, but is not positioned at the apex of a tight turn, making it unlikely that it interacts with the integrin. Recombinant HPI produced in Escherichia coli was found not to inhibit the adhesion of human platelets to collagen or fibrinogen, despite having a native structure as shown by X-ray diffraction. This result corroborates previous analyses of recombinant HPI and suggests that it might require post-translational modification or have a different biological function.
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Affiliation(s)
- Dongying Ma
- Laboratory of Malaria and Vector Research, NIH/NIAID, 12735 Twinbrook Parkway, Rockville, MD 20852, USA
| | - Ivo M. B. Francischetti
- Laboratory of Malaria and Vector Research, NIH/NIAID, 12735 Twinbrook Parkway, Rockville, MD 20852, USA
| | - Jose M. C. Ribeiro
- Laboratory of Malaria and Vector Research, NIH/NIAID, 12735 Twinbrook Parkway, Rockville, MD 20852, USA
| | - John F. Andersen
- Laboratory of Malaria and Vector Research, NIH/NIAID, 12735 Twinbrook Parkway, Rockville, MD 20852, USA
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Chang HM, Zhao L, Wang XJ, Fang YH, Li D, Luo JM, Du LY. [Effect of the excretory/scretory proteins from Trichinella spiralis on apoptosis of NCI-H446 small-cell lung cancer cells]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2014; 32:299-303. [PMID: 25518596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the effect of excretory/secretory proteins from Trichinella spiralis on apoptosis of NCI-H446 small-cell lung cancer cells. METHODS Trichinella spiralis muscle stage larvae (5 x 10(6)/ml) were cultured in culture media for 24 h, the excretory/secretory proteins were collected from the supernatant of culture media. NCI-H446 small-cell lung cancer cells (No. A05) were randomly divided into three groups: experiment group (A), standard control group (apoptosis group, B), and control group (C). NCI-H446 cells in groups A and B were cultured with 0.3 mg/ml T. spiralis excretory/secretory proteins, and 6.4 microg/ml cisplatin for 24 h, respectively. NCI-H446 cells of group C were cultured for 24 h without any treatment. The expression of Bcl-2, Fas and Fasl mRNA was detected by RT-PCR. C-myc protein expression level was examined by Western blotting and immunofluorescence assay. RESULTS The level of Bcl-2 mRNA was lowest in group A(0.575 +/- 0.047) , Bcl-2 mRNA level in group C (0.975 +/- 0.069) was higher than that of group B (0.850 +/- 0.073) (P<0.05). Fas mRNA level was highest in group A (0.975 +/- 0.115), followed by group B (0.817 +/- 0.121) and group C(0.769 +/- 0.061) (P<0.05). The level of Fasl mRNA in groups A, B, and C was 0.669 +/- 0.051, 0.787 +/- 0.124, and 0.875 +/- 0.125, respectively (P<0.05). Fas/Fasl mRNA ratio in groups A, B, and C was 1.475, 1.038, and 0.878. Western blotting showed that the expression of C-myc protein in group C (1.172 +/- 0.026) was highest, followed by group B (1.074 +/- 0.069) and A (0.566 +/- 0.054) (P<0.05). Immunofluorescence test indicated that the C-mye protein was found in the cytoplasm and the nucleus 24 h after treated with 0.3 mg/ml T. spiralis excretory/secretory proteins and 6.4 p.g/ml cisplatin. CONCLUSION Trichinella spiralis excretory/secretory proteins may inhibit apoptosis of NCI-H446 small-cell lung cancer cells by reducing the apoptosis protein C-myc and Bcl-2 mRNA levels, and causing the increase of Fas/Fasl mRNA ratio.
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Pineda MA, Rodgers DT, Al-Riyami L, Harnett W, Harnett MM. ES-62 protects against collagen-induced arthritis by resetting interleukin-22 toward resolution of inflammation in the joints. Arthritis Rheumatol 2014; 66:1492-503. [PMID: 24497523 PMCID: PMC4737104 DOI: 10.1002/art.38392] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 01/30/2014] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The parasitic worm-derived immunomodulator ES-62 protects against disease in the mouse collagen-induced arthritis (CIA) model of rheumatoid arthritis (RA) by suppressing pathogenic interleukin-17 (IL-17) responses. The Th17-associated cytokine IL-22 also appears to have a pathogenic role in autoimmune arthritis, particularly in promoting proinflammatory responses by synovial fibroblasts and osteoclastogenesis. The present study was undertaken to investigate whether the protection against joint damage afforded by ES-62 also reflects suppression of IL-22. METHODS The role(s) of IL-22 was assessed by investigating the effects of neutralizing anti-IL-22 antibodies and recombinant IL-22 (rIL-22) on proinflammatory cytokine production, synovial fibroblast responses, and joint damage in mice with CIA in the presence or absence of ES-62. RESULTS Neutralization of IL-22 during the initiation phase abrogated CIA, while administration of rIL-22 enhanced synovial fibroblast responses and exacerbated joint pathology. In contrast, after disease onset anti-IL-22 did not suppress progression, whereas administration of rIL-22 promoted resolution of inflammation. Consistent with these late antiinflammatory effects, the protection afforded by ES-62 was associated with elevated levels of IL-22 in the serum and joints that reflected a desensitization of the synovial fibroblast responses. Moreover, neutralization of IL-22 during the late effector stage of disease prevented ES-62-mediated desensitization of synovial fibroblast responses and protection against CIA. CONCLUSION IL-22 plays a dual role in CIA, being pathogenic during the initiation phase while acting to resolve inflammation and joint damage during established disease. Harnessing of the tissue repair properties of IL-22 by ES-62 highlights the potential for joint-targeted therapeutic modulation of synovial fibroblast responses and consequent protection against bone damage in RA.
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Kim DH, Lee IH, Nam ST, Hong J, Zhang P, Hwang JS, Seok H, Choi H, Lee DG, Kim JI, Kim H. Neurotropic and neuroprotective activities of the earthworm peptide Lumbricusin. Biochem Biophys Res Commun 2014; 448:292-7. [PMID: 24796676 DOI: 10.1016/j.bbrc.2014.04.105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 04/22/2014] [Indexed: 11/19/2022]
Abstract
We recently isolated a polypeptide from the earthworm Lumbricus terrestris that is structurally similar to defensin, a well-known antibacterial peptide. An 11-mer antibacterial peptide (NH2-RNRRWCIDQQA), designated Lumbricusin, was synthesized based on the amino acid sequence of the isolated polypeptide. Since we previously reported that CopA3, a dung beetle peptide, enhanced neuronal cell proliferation, we here examined whether Lumbricusin exerted neurotropic and/or neuroprotective effects. Lumbricusin treatment induced a time-dependent increase (∼51%) in the proliferation of human neuroblastoma SH-SY5Y cells. Lumbricusin also significantly inhibited the apoptosis and decreased viability induced by treatment with 6-hydroxy dopamine, a Parkinson's disease-mimicking agent. Immunoblot analyses revealed that Lumbricusin treatment increased ubiquitination of p27(Kip1) protein, a negative regulator of cell-cycle progression, in SH-SY5Y cells, and markedly promoted its degradation. Notably, adenoviral-mediated over-expression of p27(Kip1) significantly blocked the antiapoptotic effect of Lumbricusin in 6-hydroxy dopamine-treated SH-SY5Y cells. These results suggest that promotion of p27(Kip1) degradation may be the main mechanism underlying the neuroprotective and neurotropic effects of Lumbricusin.
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Affiliation(s)
- Dae Hong Kim
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea
| | - Ik Hwan Lee
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea
| | - Seung Taek Nam
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea
| | - Ji Hong
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea
| | - Peng Zhang
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea
| | - Jae Sam Hwang
- Department of Agricultural Biology, National Academy of Agricultural Science, RDA, Suwon 441-707, South Korea
| | - Heon Seok
- Department of Biomedical Engineering, Jungwon University, Goesan, Chungcheongbukdo 367-700, South Korea
| | - Hyemin Choi
- School of Life Sciences, KNU Creative Bioresearch Group (BK21 Plus Program), College of Natural Sciences, Kyungpook National University, Daehak-ro 80, Buk-gu, Daegu 702-701, South Korea
| | - Dong Gun Lee
- School of Life Sciences, KNU Creative Bioresearch Group (BK21 Plus Program), College of Natural Sciences, Kyungpook National University, Daehak-ro 80, Buk-gu, Daegu 702-701, South Korea
| | - Jae Il Kim
- School of Life Sciences, Gwangju Institute of Science and Technology, Oryong-dong, Buk-gu, Gwangju 500-712, South Korea
| | - Ho Kim
- Department of Life Science, College of Natural Science, Daejin University, Pocheon, Gyeonggido 487-711, South Korea.
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Wu C, Chen Q, Fang Y, Wu J, Han Y, Wang Y, Yang Y, Chu M, Feng Y, Tan L, Guo X, Hu W, Wang Z. Schistosoma japonicum egg specific protein SjE16.7 recruits neutrophils and induces inflammatory hepatic granuloma initiation. PLoS Negl Trop Dis 2014; 8:e2703. [PMID: 24551263 PMCID: PMC3923719 DOI: 10.1371/journal.pntd.0002703] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 01/06/2014] [Indexed: 11/19/2022] Open
Abstract
Neutrophils are known to play a major role in the egg granulomatous lesions caused by Schistosoma japonicum, but the precise mechanism by which eggs recruit or active neutrophil is unknown. Here we report S. japonicum egg specific EF-hand protein-SjE16.7 is a potent neutrophil recruiter and initiates the egg associated inflammatory granuloma in schistosomiasis. We show that the expression of SjE16.7 at level of both mRNA and protein is restricted to the egg stage. It locates in the miracidium and subshell area of the egg and can be secreted by the egg. The antigenic properties of SjE16.7 strongly suggest a role for SjE16.7 as an egg-derived molecule involved in host-parasite interactions. To study SjE16.7 functions in vivo, we challenged murine air pouch with recombinant SjE16.7. The results showed SjE16.7 trigged more inflammatory cell infiltration than vehicle or control protein. Using peritoneal exudate neutrophils from mice, we found that SjE16.7 significantly induced neutrophil chemotaxis in vitro, and the observed phenotypes were associated with enhanced Rac GTPase activation in SjE16.7 treated cells. Finally, in vivo hepatic granuloma formation model showed SjE16.7 coupled beads recruited more inflammatory cell infiltration than control beads. Our findings suggest SjE16.7 is an important pathogenic factor derived from egg. By recruiting neutrophils and inducing local inflammation, SjE16.7 facilitates eggs to be excreted through gut tissues and also initiates pathology in the liver; therefore SjE16.7 is a possible target for the prevention and treatment of schistosomiasis. As a neglected disease, schistosomiasis continues to be a significant cause of parasitic morbidity and mortality worldwide. Schistosoma japonicum is one of the major causative agents of human schistosomiasis. Trapped in the liver or intestinal tissue, S. japonicum eggs are the main cause of pathology following infection. They induce vigorous immune responses from the host, which facilitate the passage of the eggs from the tissue to the gut lumen and cause the pathology in liver. In this paper, we described, for the first time, S. japonicum egg specific EF-hand protein-SjE16.7 is a potent neutrophil recruiter and initiates the egg associated inflammatory granuloma in schistosomiasis. This study presents a precise mechanism by which eggs recruit neutrophil and induce inflammatory response. It furthers our understanding of the immunopathogenesis of human schistosomiasis. In addition, it provides a potential target for the prevention and treatment of this globally important parasite.
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Affiliation(s)
- Chenyun Wu
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Chen
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Fang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianhua Wu
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanyan Han
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Wang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Yang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Chu
- The Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Feng
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Linping Tan
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaokui Guo
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Hu
- Department of Microbiology and Microbial Engineering, School of Life Science, Fudan University, Shanghai, China
| | - Zhaojun Wang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail:
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Wan H, Lee KS, Kim BY, Yuan M, Zhan S, Lu Y, You H, Li J, Jin BR. Developmental regulation and antifungal activity of a growth-blocking peptide from the beet armyworm Spodoptera exigua. Dev Comp Immunol 2013; 41:240-247. [PMID: 23732405 DOI: 10.1016/j.dci.2013.05.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 05/07/2013] [Accepted: 05/23/2013] [Indexed: 06/02/2023]
Abstract
Insect cytokine growth-blocking peptides (GBPs) are involved in growth regulation and the innate immune response. However, the microbial binding and antimicrobial activities of GBPs remain unclear. Here, we investigate the developmental role and antifungal activity of a GBP from the beet armyworm Spodoptera exigua (SeGBP). Sequence analysis predicted that mature SeGBP consists of 24 amino acid residues, including 2 cysteine residues. During S. exigua development, SeGBP is constitutively expressed in the fat body during the larval and adult stages but not in pupae. SeGBP expression is up-regulated by 20-hydroxyecdysone and down-regulated by juvenile hormone analog. Recombinant SeGBP purified from baculovirus-infected insect cells retards the growth of S. exigua larvae. Additionally, SeGBP expression is acutely induced in the fat body after injection with Escherichia coli, Bacillus thuringiensis, or Beauveria bassiana. Recombinant SeGBP can bind to B. bassiana but not to E. coli or B. thuringiensis. Consistent with these findings, SeGBP shows antifungal activity against B. bassiana. Therefore, these results provide insight into the role of SeGBP during the innate immune response following microbial infection, and furthermore, they suggest a novel function for SeGBP as a direct antifungal agent against entomopathogenic fungi, such as B. bassiana.
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Affiliation(s)
- Hu Wan
- Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, PR China
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Bahlool QZM, Skovgaard A, Kania PW, Buchmann K. Effects of excretory/secretory products from Anisakis simplex (Nematoda) on immune gene expression in rainbow trout (Oncorhynchus mykiss). Fish Shellfish Immunol 2013; 35:734-739. [PMID: 23769875 DOI: 10.1016/j.fsi.2013.06.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 04/09/2013] [Accepted: 06/03/2013] [Indexed: 06/02/2023]
Abstract
Excretory/secretory (ES) products are molecules produced by parasitic nematodes, including larval Anisakis simplex, a parasite occurring in numerous marine fish hosts. The effects of these substances on host physiology have not been fully described. The present work elucidates the influence of ES substances on the fish immune system by measuring immune gene expression in spleen and liver of rainbow trout (Oncorhynchus mykiss) injected intraperitoneally with ES products isolated from A. simplex third stage larvae. The overall gene expression profile of exposed fish showed a generalized down-regulation of the immune genes tested, suggesting a role of ES proteins in immunomodulation. We also tested the enzymatic activity of the ES proteins and found that lipase, esterase/lipase, valine and cysteine arylamidases, naphthol-AS-BI-phosphohydrolase and α-galactosidase activities were present in the ES solution. This type of hydrolytic enzyme activity may play a role in nematode penetration of host tissue. In addition, based on the notion that A. simplex ES products may have an immune-depressive effect (by minimizing immune gene expression) it could also be suggested that worm enzymes directly target host immune molecules which would add to a decreased host immune response and increased worm survival.
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Affiliation(s)
- Qusay Z M Bahlool
- Laboratory of Aquatic Pathobiology, Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark.
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Kushwaha S, Singh PK, Rana AK, Misra-Bhattacharya S. Immunization of Mastomys coucha with Brugia malayi recombinant trehalose-6-phosphate phosphatase results in significant protection against homologous challenge infection. PLoS One 2013; 8:e72585. [PMID: 24015262 PMCID: PMC3755969 DOI: 10.1371/journal.pone.0072585] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 07/18/2013] [Indexed: 11/19/2022] Open
Abstract
Development of a vaccine to prevent or reduce parasite development in lymphatic filariasis would be a complementary approach to existing chemotherapeutic tools. Trehalose-6-phosphate phosphatase of Brugia malayi (Bm-TPP) represents an attractive vaccine target due to its absence in mammals, prevalence in the major life stages of the parasite and immunoreactivity with human bancroftian antibodies, especially from endemic normal subjects. We have recently reported on the cloning, expression, purification and biochemical characterization of this vital enzyme of B. malayi. In the present study, immunoprophylactic evaluation of Bm-TPP was carried out against B. malayi larval challenge in a susceptible host Mastomys coucha and the protective ability of the recombinant protein was evaluated by observing the adverse effects on microfilarial density and adult worm establishment. Immunization caused 78.4% decrease in microfilaremia and 71.04% reduction in the adult worm establishment along with sterilization of 70.06% of the recovered live females. The recombinant protein elicited a mixed Th1/Th2 type of protective immune response as evidenced by the generation of both pro- and anti-inflammatory cytokines IL-2, IFN-γ, TNF-α, IL-4 and an increased production of antibody isotypes IgG1, IgG2a, IgG2b and IgA. Thus immunization with Bm-TPP conferred considerable protection against B. malayi establishment by engendering a long-lasting effective immune response and therefore emerges as a potential vaccine candidate against lymphatic filariasis (LF).
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Affiliation(s)
- Susheela Kushwaha
- Division of Parasitology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Prashant Kumar Singh
- Division of Parasitology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Ajay Kumar Rana
- Division of Parasitology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India
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Joseph SK, Verma SK, Verma R, Saxena JK, Srivastava M, Murthy PK. Anti-inflammatory BmAFI of Brugia malayi modulates IgE, histamine and histamine receptor responses in Mastomys coucha. Acta Trop 2013; 127:82-6. [PMID: 23603670 DOI: 10.1016/j.actatropica.2013.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 03/03/2013] [Accepted: 04/11/2013] [Indexed: 11/29/2022]
Abstract
We recently reported that BmAFI, an anti-inflammatory fraction of Brugia malayi adult worm supports parasite development in the hostile peritoneal cavity (p.c.) of Mastomys coucha through a modified Th2 type of response that includes IL-13 and IgE response and anti-inflammatory IL-10 cytokine milieu. In the present study we investigated IgE related responses such as histamine release and modulation of histamine receptors 1 and 2 (HR1 and HR2) by presensitization with BmAFI of M. coucha infected with B. malayi. Sensitization with BmAFI alone enhanced IgE, histamine and HR2, but decreased HR1. Exposure of these animals to infection produced an IgE response that was inversely related to the parasite burden, and decreased histamine conc., and HR1 and HR2 expression. However, there was an early small increase in HR1 expression for a short period after exposure to infection. As expected, BmAFI sensitization supported parasite survival and development in the hostile p.c. of the host. These findings further establish that BmAFI decreases inflammatory/Th1 response and modulates Th2 responses to favour survival and development of the parasite in the hostile p.c. of the host and that IgE and histamine play an important role in this.
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Affiliation(s)
- Sujith K Joseph
- Division of Parasitology, CSIR-Central Drug Research Institute, Lucknow 226001, India
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Wang XF, Du JW. [Anti-inflammatory effect and mechanism of immunomodulators of helminths]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2012; 30:486-490. [PMID: 23484264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Recent studies indicate that many helminth-derived products can prevent or treat a variety of autoimmune diseases or allergy in mice models. This review summarizes research advances on helminth-derived immunomodulators, and discusses the anti-inflammatory effect and possible mechanisms in mice model.
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Affiliation(s)
- Xue-Feng Wang
- Department of Medical Laboratory, School of Medicine, Anhui University of Science and Technology, Huainan 232001, China.
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Sun X, Lv Z, Peng H, Fung M, Yang L, Yang J, Zheng H, Liang J, Wu Z. Effects of a recombinant schistosomal-derived anti-inflammatory molecular (rSj16) on the lipopolysaccharide (LPS)-induced activated RAW264.7. Parasitol Res 2012; 110:2429-37. [PMID: 22281546 DOI: 10.1007/s00436-011-2782-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 12/09/2011] [Indexed: 11/27/2022]
Abstract
Macrophages as a principal component of immune system play an important role in the initiation, modulation, and final activation of immune response against pathogens including schistosomes. Classical (M1) or alternative (M2) activation states of macrophage have different functions during infections. Previously, we report that the schistosomal-derived anti-inflammatory molecule coding gene (named Sj16) was isolated and the recombinant Sj16 (rSj16) was expressed in Escherichia coli. rSj16 has been demonstrated to have definite anti-inflammatory effect in vivo and in vitro on rodent model. To study the molecular basis on anti-inflammatory of rSj16, in the present paper, we investigate the effects of rSj16 on the lipopolysaccharide (LPS)-induced activated RAW264.7, a murine macrophage cell line. We found that rSj16 inhibited LPS-induced activation of RAW264.7, as evidenced by impacting the proliferation, phagocytosis, and migration of the RAW264.7. After pretreated with rSj16, it showed the most potent inhibitory effects of rSj16 on the nitric oxide production in RAW264.7 cells. Furthermore, rSj16 also significantly decreased the levels of proinflammatory cytokines such as PGE2, IL-1β, IL-6, IL-12, IL-23, and TNF-α, whereas it increased the levels of immunosuppressive cytokine IL-10. rSj16 can also inhibit the LPS-induced activation of NF-κβ. These results further imply that Sj16 contributes to the immune evasion of Schistosoma japonicum through alternatively activated macrophage (M2), and rSj16 is expected to serve as a potential drug source for the medication of inflammatory disorders.
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Affiliation(s)
- Xi Sun
- Department of Parasitology, Zhongshan School of Medicine, SunYat-sen University, Guangzhou, China
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Robinson MW, Donnelly S, Hutchinson AT, To J, Taylor NL, Norton RS, Perugini MA, Dalton JP. A family of helminth molecules that modulate innate cell responses via molecular mimicry of host antimicrobial peptides. PLoS Pathog 2011; 7:e1002042. [PMID: 21589904 PMCID: PMC3093369 DOI: 10.1371/journal.ppat.1002042] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 03/15/2011] [Indexed: 01/01/2023] Open
Abstract
Over the last decade a significant number of studies have highlighted the central role of host antimicrobial (or defence) peptides in modulating the response of innate immune cells to pathogen-associated ligands. In humans, the most widely studied antimicrobial peptide is LL-37, a 37-residue peptide containing an amphipathic helix that is released via proteolytic cleavage of the precursor protein CAP18. Owing to its ability to protect against lethal endotoxaemia and clinically-relevant bacterial infections, LL-37 and its derivatives are seen as attractive candidates for anti-sepsis therapies. We have identified a novel family of molecules secreted by parasitic helminths (helminth defence molecules; HDMs) that exhibit similar biochemical and functional characteristics to human defence peptides, particularly CAP18. The HDM secreted by Fasciola hepatica (FhHDM-1) adopts a predominantly α-helical structure in solution. Processing of FhHDM-1 by F. hepatica cathepsin L1 releases a 34-residue C-terminal fragment containing a conserved amphipathic helix. This is analogous to the proteolytic processing of CAP18 to release LL-37, which modulates innate cell activation by classical toll-like receptor (TLR) ligands such as lipopolysaccharide (LPS). We show that full-length recombinant FhHDM-1 and a peptide analogue of the amphipathic C-terminus bind directly to LPS in a concentration-dependent manner, reducing its interaction with both LPS-binding protein (LBP) and the surface of macrophages. Furthermore, FhHDM-1 and the amphipathic C-terminal peptide protect mice against LPS-induced inflammation by significantly reducing the release of inflammatory mediators from macrophages. We propose that HDMs, by mimicking the function of host defence peptides, represent a novel family of innate cell modulators with therapeutic potential in anti-sepsis treatments and prevention of inflammation.
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Affiliation(s)
- Mark W Robinson
- Infection, Immunity and Innovation (i3) Institute, University of Technology Sydney (UTS), Ultimo, Sydney, Australia.
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Li X, Li S, Zhang M, Li X, Zhang X, Zhang W, Li C. Protective effects of a bacterially expressed NIF-KGF fusion protein against bleomycin-induced acute lung injury in mice. Acta Biochim Biophys Sin (Shanghai) 2010; 42:548-57. [PMID: 20705596 DOI: 10.1093/abbs/gmq059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Current evidence suggests that the keratinocyte growth factor (KGF) and the polymorphonuclear leukocyte may play key roles in the development of lung fibrosis. Here we describe the construction, expression, purification, and identification of a novel NIF (neutrophil inhibitory factor)-KGF mutant fusion protein (NKM). The fusion gene was ligated via a flexible octapeptide hinge and expressed as an insoluble protein in Escherichia coli BL21 (DE3). The fusion protein retained the activities of KGF and NIF, as it inhibited both fibroblast proliferation and leukocyte adhesion. Next, the effects of NKM on bleomycin-induced lung fibrosis in mice were examined. The mice were divided into the following four groups: (i) saline group; (ii) bleomycin group (instilled with 5 mg/kg bleomycin intratracheally); (iii) bleomycin plus dexamethasone (Dex) group (Dex was given intraperitoneally (i.p.) at 1 mg/kg/day 2 days prior to bleomycin instillation and daily after bleomycin instillation until the end of the treatment); and (iv) bleomycin plus NKM group (NKM was given i.p. at 2 mg/kg/day using the same protocol as the Dex group). NKM significantly improved the survival rates of mice exposed to bleomycin. The marked morphological changes and increased hydroxyproline levels resulted from the instillation of bleomycin (on Day 17) in the lungs were significantly inhibited by NKM. These results revealed that NKM can attenuate bleomycin-induced lung fibrosis, suggesting that NKM could be used to prevent bleomycin-induced lung damage or other interstitial pulmonary fibrosis.
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Affiliation(s)
- Xinping Li
- Department of Animal Biotechnology, Northwest Sci-tech University of Agriculture and Forestry, Yangling, China.
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Yi D, Xu L, Yan R, Li X. Haemonchus contortus: cloning and characterization of serpin. Exp Parasitol 2010; 125:363-70. [PMID: 20214897 DOI: 10.1016/j.exppara.2010.03.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 02/27/2010] [Accepted: 03/02/2010] [Indexed: 02/08/2023]
Abstract
The serpin gene of Haemonchus contortus (hc-serpin) was cloned and characterized in this study. Specific primers for rapid amplification cDNA ends (RACE) were designed based on the expression sequence tag (EST, BM173953) to amplify the 3'- and 5'-ends of hc-serpin. The full length of the cDNA of this gene was obtained by overlapping the sequences of 3'- and 5'-extremities and amplification by reverse transcription-PCR. The biochemical activities of the recombinant protein (rHc-Serpin), which was expressed in prokaryotic cells and purified by affinity chromatography and size-exclusion chromatography, were analyzed by assays of trypsin inhibition, anti-coagulation activity, and stability to temperature and pH. The results showed that the cloned full-length cDNA comprised 1317bp and encoded a peptide with 367 amino acid residues which showed sequence similarity to several known serpins. The rHc-Serpin inhibited trypsin activity effectively and prolonged the coagulation time of rabbit blood in vitro. The rHc-Serpin was stable from pH 2.0-10.0 and kept activity at high temperature until 75 degrees C. Optimal pH of rHc-Serpin protein to inhibit trypsin activity was at pH 7.6. The natural serpin of H. contortus detected by immunoblot assay was about 63kDa, and the rHc-Serpin was recognized strongly by serum from naturally infected goats. By immunohistochemistry, the serpin was localised exclusively in the epithelial cells of gastrointestinal tract in adult H. contortus. The results indicated that the cloned gene was serpin and that the protein may play important roles in the biological functions of H. contortus.
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Affiliation(s)
- Daosheng Yi
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
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Henry BL, Desai UR. Recent research developments in the direct inhibition of coagulation proteinases--inhibitors of the initiation phase. Cardiovasc Hematol Agents Med Chem 2008; 6:323-336. [PMID: 18855645 DOI: 10.2174/187152508785909519] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Physiologic clotting is a defensive action. The new cell-based model of hemostasis proposes three steps--initiation, amplification and propagation--occurring on specific cell surfaces to generate a thrombus in a tightly regulated manner. The initiation phase relies on key players including tissue factor (TF), factor VIIa (fVIIa), platelets, Ca2+, phospholipids, and factor X/Xa (fX/fXa). Exposure of TF on sub-endothelial and other blood cells triggers a coagulation response, which may have to be inhibited to prevent a deleterious thrombotic effect. Inhibiting TF-initiated coagulation, akin to 'nipping coagulation in the bud', is predicted to have major advantages, including a more efficient separation of the antithrombotic and hemorrhagic responses. The availability of crystal structures of TF, fVIIa and TF-fVIIa complex makes structure-based drug design feasible. Although no initiation phase small molecule inhibitor has reached the clinic as yet, several molecules have displayed promise. We discuss recent results on the discovery of inhibitors of the initiation phase with special emphasis on peptides, peptidomimetics and organic small molecules.
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Affiliation(s)
- Brian L Henry
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23298-0540, USA.
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Chen XX, Hu XC, Xu J, Yu XB. [Parasite-origin IgE-dependent histamine-releasing factors in inducing histamine release from sensitized mast cells]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2007; 25:469-473. [PMID: 18441893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To obtain the recombinant IgE-dependent histamine-releasing factors of Schistosoma japonicum and Clonorchis sinensis (rSjHRF and rCsHRF) and to study the effect of recombinant HRFs to induce histamine release from sensitized rat mast cells. METHODS The complete coding regions of SjHRF and CsHRF were cloned separately, and the recombinant plasmids were respectively transformed and expressed in BL21 cells. The soluble recombinant rSjHRF and rCsHRF were purified. Aliquots of the mast cells obtained from the lungs of OVA-immunized rats were separately incubated with rSjHRF and rCsHRF and the released histamine was measured by the OPT spectrofluorometric procedure. The dose-dependent curves and the kinetics of histamine release induced by rSjHRF and rCsHRF were prepared. RESULTS The recombinant plasmids pET-30-rSjHRF and pET-30-rCsHRF were constructed successfully and the purified soluble recombinant proteins rSjHRF and rCsHRF were obtained by affinity chromatography. rSjHRF and rCsHRF induced histamine release from sensitized mast cells in a dose-dependent manner. At the concentration of 150 mg/L, the average rate of histamine release from sensitized mast cells induced by rSjHRF and rCsHRF were 49.78% and 32.63%, respectively. Histamine release increased with prolonged reaction time and the maximal release occurred at 35 min. CONCLUSION The recombinant parasite-originated IgE-dependent HRFs show an effect of inducing histamine release from sensitized mast cells, suggesting that this protein would play a role in type I hypersensitivity in hosts with parasitic infections.
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Affiliation(s)
- Xiao-Xiang Chen
- Department of Medical Microbiology, Guangzhou Medical College, Guangzhou 510182, China
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Abstract
The helminth parasite, Fasciola hepatica, has a worldwide distribution and infects a wide variety of mammalian hosts, including ruminants and man. In response to infection, these hosts mount a type 2 helper (Th2) response that is highly polarized and results in the downregulation of type 1 helper (Th1) mechanisms. In a murine macrophage model F. hepatica induces alternative activation of macrophages. These macrophages differ from classically activated cells in that they preferentially use arginase instead of inducible nitric oxide synthase (iNOS) for metabolism of nitrogen. In this study we sought to characterize macrophage phenotype following stimulation of the ovine cell line MOCL7 with recombinant F. hepatica enzymes and crude parasite extracts. An in vitro model using the MOCL7 cell line was established and arginase levels in cells were used to determine the activation status of cells. Stimulation of this cell-line in vitro with F. hepatica products induces alternative activation. We have also found a chitinase-like protein in supernatants which is capable of differentiating alternatively activated from classically activated macrophages.
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Affiliation(s)
- R J Flynn
- Veterinary Sciences Centre, School of Agriculture, Food Science and Veterinary Medicine, College of Life Science, University College Dublin, Belfield, Dublin 4, Ireland
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Harnett W, Harnett MM. Filarial nematode secreted product ES-62 is an anti-inflammatory agent: therapeutic potential of small molecule derivatives and ES-62 peptide mimetics. Clin Exp Pharmacol Physiol 2007; 33:511-8. [PMID: 16700887 DOI: 10.1111/j.1440-1681.2006.04400.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1. The 'hygiene hypothesis' postulates that the recent increased incidence of allergic or autoimmune diseases (e.g. asthma, type I diabetes) in the West reflects an absence of appropriate priming of the immune response by infectious agents, such as parasitic worms, during childhood. 2. Consistent with this, it has long been recognized that several autoimmune disorders, such as rheumatoid arthritis (RA), a T helper (Th) 1-mediated autoimmune disease characterized by excess production of pro-inflammatory cytokines, such as tumour necrosis factor-alpha, exhibit reduced incidence and severity in geographical regions with high parasite load, suggesting that environmental factors may subtly alter disease progression. 3. Infection with worms also appears to suppress Th2-biased inflammatory disorders, such as asthma, because there also appears to be an inverse correlation between parasite load and atopy. This is perhaps more surprising, given that helminths often induce strong Th2-type immune responses characterized by release of specific cytokines, such as interleukin (IL)-4, IL-5 and IL-13. 4. Therefore, these findings suggest that the co-evolution of helminths with hosts, which has resulted in the ability of worms to modulate inflammatory responses in order to promote parasite survival, may also have generated a predisposition for the host to develop autoimmunity and allergy in the absence of infection. 5. The mechanisms underlying such immunomodulation are not clear, but appear to involve the release of parasite-derived molecules that allow the worms to modulate or evade the host immune response by a number of mechanisms, including skewing of cytokine responses and the induction of T regulatory cells. 6. In the present review we discuss the properties of one such filarial nematode-derived immunomodulatory molecule, namely ES-62, its anti-inflammatory action and the therapeutic potential of small molecule derivatives and peptides that mimic its action.
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Affiliation(s)
- William Harnett
- Department of Immunology, University of Strathclyde, Glasgow, UK.
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Rodriguez-Mahillo AI, Gonzalez-Muñoz M, Gomez-Aguado F, Rodriguez-Perez R, Corcuera MT, Caballero ML, Moneo I. Cloning and characterisation of the Anisakis simplex allergen Ani s 4 as a cysteine-protease inhibitor. Int J Parasitol 2007; 37:907-17. [PMID: 17324433 DOI: 10.1016/j.ijpara.2007.01.007] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2006] [Revised: 01/16/2007] [Accepted: 01/17/2007] [Indexed: 11/18/2022]
Abstract
Anisakis simplex is a nematode that can parasitise humans who eat raw or undercooked fish containing live L3s. Larvae invading the gastrointestinal mucosa excrete/secrete proteins implicated in the pathogenesis of anisakiasis that can induce IgE mediated symptoms. Misdiagnosis of anisakiasis, due to cross-reactivity, makes it necessary to develop new diagnostic tools. Recombinant allergens have proved to be useful for diagnosis of other parasitoses. Among the Anisakis allergens, Ani s 4 was considered to be a good potential diagnostic protein because of its heat resistance and its importance in the clinical history of sensitised patients. Therefore, the objective of this study was to clone and characterise the cDNA encoding this allergen. The Ani s 4 mRNA sequence was obtained using a PCR-based strategy. The Ani s 4 amino acid sequence contained the characteristic domains of cystatins. Mature recombinant Ani s 4 was expressed in a bacterial system as a His-tagged soluble protein. The recombinant Ani s 4 inhibited the cleavage of a peptide substrate by papain with a Ki value of 20.6 nM. Immunobloting, ELISA, a commercial fluorescence-enzyme-immunoassay and a basophil activation test were used to study the allergenic properties of rAni s 4, demonstrating that the recombinant allergen contained the same IgE epitopes as the native Ani s 4, and that it was a biologically active allergen since it activated basophils from patients with allergy to A. simplex in a specific concentration-dependent manner. Ani s 4 was localised by immunohistochemical methods, using a polyclonal anti-Ani s 4 anti-serum, in both the secretory gland and the basal layer of the cuticle of A. simplex L3. In conclusion, we believe that Ani s 4 is the first nematode cystatin that is a human allergen. The resulting rAni s 4 retains all allergenic properties of the natural allergen, and can therefore be used in immunodiagnosis of human anisakiasis.
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Li C, Wei X, Xu L, Li X. Recombinant galectins of male and female Haemonchus contortus do not hemagglutinate erythrocytes of their natural host. Vet Parasitol 2007; 144:299-303. [PMID: 17125929 DOI: 10.1016/j.vetpar.2006.10.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Revised: 10/06/2006] [Accepted: 10/17/2006] [Indexed: 11/29/2022]
Abstract
Recombinant galectins of female and male adult worms of Haemonchus contortus were expressed in Escherichia coli and their hemagglutinating activities to human and different animal erythrocytes were analyzed. The results showed that female and male galectins could be highly expressed in E. coli using a temperature-sensitive plasmid, with the recombinant protein being mainly appeared in inclusion bodies. Hemagglutinating activity assays showed that both of the galectins hemagglutinated human A, B, O type, dog, rabbit, chicken and mouse erythrocytes at the high concentration of 40 microg/well, but did not hemagglutinate erythrocytes of the natural host of H. contortus, the goat. Sugar inhibition assays confirmed that, out of eight sugars tested, only lactose was effective to inhibit agglutination of human type B erythrocytes by the recombinant galectins.
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Affiliation(s)
- Chunhua Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
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Zhang Y, Wang KH, Guo YJ, Lu YM, Yan HL, Song YL, Wang F, Ding FX, Sun SH. Annexin B1 from Taenia solium metacestodes is a newly characterized member of the annexin family. Biol Chem 2007; 388:601-10. [PMID: 17552907 DOI: 10.1515/bc.2007.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We previously reported cloning of the Taenia solium annexin B1 gene from a metacestode cDNA expression library and demonstrated that it acts as a protective antigen for effective vaccine development against cysticercosis. In the present study we produced recombinant annexin B1 and antiserum against the protein to investigate its structural and functional properties. Western blotting of metacestode fractions indicated that T. solium annexin B1, similar to vertebrate annexins, associates with acid phospholipids in the presence of Ca(2+). This property was confirmed by the recognition of apoptotic cells by labeled annexin B1. CD spectroscopy results demonstrated that alpha-helices are the main secondary structures of the protein. Ca(2+) binding increases the alpha-helix content and causes significant thermal stabilization with a melting temperature increase of approximately 10 degrees C. Functional Ca(2+)-dependent phospholipid binding sites of annexin B1 were investigated using mutant proteins. By changing a conserved acidic amino acid residue that putatively combines Ca(2+) in each domain of annexin B1 singly or in combination, we found that Ca(2+) binding in the first domain is more important than that at the other Ca(2+) binding sites. Annexin B1 is a metacestode stage-specific antigen, with the protein being mainly localized in the teguments and surrounding cyst wall of T. solium metacestodes, suggesting a role in the parasite-host interaction.
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Affiliation(s)
- Yi Zhang
- Department of Medical Genetics, The Second Military Medical University, Xiang Yin Road 800, Shanghai 200433, P.R. China
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Varaldo PB, Miyaji EN, Vilar MM, Campos AS, Dias WO, Armôa GRG, Tendler M, Leite LCC, McIntosh D. Mycobacterial codon optimization of the gene encoding the Sm14 antigen of Schistosoma mansoni in recombinant Mycobacterium bovis Bacille Calmette-Guérin enhances protein expression but not protection against cercarial challenge in mice. ACTA ACUST UNITED AC 2006; 48:132-9. [PMID: 16965361 DOI: 10.1111/j.1574-695x.2006.00133.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mycobacterial codon-optimized gene encoding the Sm14 antigen of Schistosoma mansoni was generated using oligonucleotide assembly. This synthetic gene enhanced approximately fourfold the protein expression level in recombinant Mycobacterium bovis Bacille Calmette-Guérin (rBCG) when compared to that obtained using the native gene in the same expression vector. Immunization of mice with rBCG expressing Sm14 via the synthetic gene induced specific cellular Th1-predominant immune responses, as determined by interferon-gamma production of Sm14-stimulated splenocytes, which were comparable to those recorded in animals immunized with an rBCG strain expressing the native gene. Administration of a single dose of the rBCG-Sm14 construct carrying the synthetic gene conferred protection against cercarial challenge in outbred Swiss mice, at a level equivalent to those provided by either a single dose of rBCG expressing the native gene or three doses of Escherichia coli-derived recombinant Sm14. Our data demonstrated that despite improving the level of antigen expression, the codon optimization strategy did not result in enhanced immunity or protection against cercarial S. mansoni challenge.
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Affiliation(s)
- Paula B Varaldo
- Centro de Biotecnologia, Instituto Butantan, Sao Paulo, Brazil
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42
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Abstract
The present study was undertaken to investigate the effect of Fasciola gigantica excretory secretory antigen (Fg-ESA) on rat hematological indices. Fg-ESA was prepared by keeping thoroughly washed 40 F. gigantica flukes in 100 ml phosphate buffer saline (PBS) for 2 h at 37℃, and centrifuging the supernatant at 12,000 g at 4℃ for 30 min. The protein content of Fg-ESA was adjusted to 1.8 mg/ml. The rats were randomly divided into two groups of six rats each. Rats in group A received 0.5 ml of Fg-ESA intraperitoneally (i.p.) for 7 days, whereas control rats in group B received 0.5 ml of PBS i.p. for 7 days. Hemograms of both groups were studied initially and on days 0, 2, 4, 14 and 21 after the final injection of Fg-ESA or PBS. Progressive and significant (p < 0.01) declines in the values of hemoglobin, hematocrit, and total erythrocyte count were observed without significant (p > 0.05) changes in the values of mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, or mean corpuscular volume in group A. Thus, we conclude that Fg-ESA induces normocytic normochromic anemia in rats.
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Affiliation(s)
- G Ganga
- Clinical Medicine Laboratory, Indian Veterinary Research Institute, Izatnagar, Bareilly-243 122 (U.P.), India
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de Pont ACJM, Bakhtiari K, Hutten BA, de Jonge E, Vlasuk GP, Rote WE, Levi M, Büller HR, Meijers JCM. Endotoxaemia induces resistance to activated protein C in healthy humans. Br J Haematol 2006; 134:213-9. [PMID: 16846480 DOI: 10.1111/j.1365-2141.2006.06127.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Systemic inflammation activates the tissue factor/factor VIIa complex (TF/FVIIa), leading to a procoagulant state, which may be enhanced by impairment of physiological anticoagulant pathways, such as the protein C system. Besides impaired protein C activation, resistance to activated protein C (APC) may occur. We studied the effect of endotoxemia on APC resistance, analysed its determinants and evaluated the effect of TF/FVIIa inhibition on endotoxin-induced APC resistance. Sixteen healthy male volunteers participated in the study, eight receiving endotoxin alone and eight receiving the combination of endotoxin and recombinant Nematode Anticoagulant Protein c2 (rNAPc2), a potent inhibitor of TF/FVIIa. Parameters of coagulation were subsequently studied. The sensitivity to APC was determined by two tests: a test based on the endogenous thrombin potential and a test based on the activated partial thromboplastin time. In response to endotoxemia, both tests detected a transient APC resistance that was predominantly mediated by an increase in factor VIII and was not influenced by TF/FVIIa inhibition. In vitro tests confirmed that an increase in factor VIII induced APC resistance, as measured by both tests. This finding suggests that APC resistance might play a role in the procoagulant state occurring during human endotoxemia.
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Affiliation(s)
- Anne-Cornélie J M de Pont
- Department of Intensive Care, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands.
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Dossey AT, Reale V, Chatwin H, Zachariah C, deBono M, Evans PD, Edison AS. NMR analysis of Caenorhabditis elegans FLP-18 neuropeptides: implications for NPR-1 activation. Biochemistry 2006; 45:7586-97. [PMID: 16768454 PMCID: PMC2517133 DOI: 10.1021/bi0603928] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phe-Met-Arg-Phe-NH2 (FMRFamide)-like peptides (FLPs) are the largest neuropeptide family in animals, particularly invertebrates. FLPs are characterized by a C-N-terminal gradient of decreasing amino acid conservation. Neuropeptide receptor 1 (NPR-1) is a G-protein coupled receptor (GPCR), which has been shown to be a strong regulator of foraging behavior and aggregation responses in Caenorhabditis elegans. Recently, ligands for NPR-1 were identified as neuropeptides coded by the precursor genes flp-18 and flp-21 in C. elegans. The flp-18 gene encodes eight FLPs including DFDGAMPGVLRF-NH2 and EMPGVLRF-NH2. These peptides exhibit considerably different activities on NPR-1, with the longer one showing a lower potency. We have used nuclear magnetic resonance and biological activity to investigate structural features that may explain these activity differences. Our data demonstrate that long-range electrostatic interactions exist between N-terminal aspartates and the C-terminal penultimate arginine as well as N-terminal hydrogen-bonding interactions that form transient loops within DFDGAMPGVLRF-NH2. We hypothesize that these loops, along with peptide charge, diminish the activity of this peptide on NPR-1 relative to that of EMPGVLRF-NH2. These results provide some insight into the large amino acid diversity in FLPs.
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Affiliation(s)
- Aaron T Dossey
- McKnight Brain Institute, University of Florida, 100 South Newell Drive, Building 59, Room LG-150, Gainesville, Florida 32611, USA
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Thuwajit C, Thuwajit P, Uchida K, Daorueang D, Kaewkes S, Wongkham S, Miwa M. Gene expression profiling defined pathways correlated with fibroblast cell proliferation induced by Opisthorchis viverrini excretory/secretory product. World J Gastroenterol 2006; 12:3585-92. [PMID: 16773716 PMCID: PMC4087575 DOI: 10.3748/wjg.v12.i22.3585] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the mechanism of fibroblast cell proliferation stimulated by the Opisthorchis viverrini excretory/secretory (ES) product.
METHODS: NIH-3T3, mouse fibroblast cells were treated with O. viverrini ES product by non-contact co-cultured with the adult parasites. Total RNA from NIH-3T3 treated and untreated with O. viverrini was extracted, reverse transcribed and hybridized with the mouse 15K complementary DNA (cDNA) array. The result was analyzed by ArrayVision version 5 and GeneSpring version 5 softwares. After normalization, the ratios of gene expression of parasite treated to untreated NIH-3T3 cells of 2-and more-fold upregulated was defined as the differentially expressed genes. The expression levels of the signal transduction genes were validated by semi-quantitative SYBR-based real-time RT-PCR.
RESULTS: Among a total of 15 000 genes/ESTs, 239 genes with established cell proliferation-related function were 2 fold-and more-up-regulated by O. viverrini ES product compared to those in cells without exposure to the parasitic product. These genes were classified into groups including energy and metabolism, signal transduction, protein synthesis and translation, matrix and structural protein, transcription control, cell cycle and DNA replication. Moreover, the expressions of serine-threonine kinase receptor, receptor tyrosine kinase and collagen production-related genes were up-regulated by O. viverrini ES product. The expression level of signal transduction genes; pkC, pdgfrα, jak 1, eps 8, tgfβ 1i4, strap and h ras measured by real-time RT-PCR confirmed their expression levels to those obtained from cDNA array. However, only the up-regulated expression of pkC, eps 8 and tgfβ 1i4 which are the downstream signaling molecules of either epidermal growth factor (EGF) or transforming growth factor-β (TGF-β) showed statistical significance (P < 0.05).
CONCLUSION: O. viverrini ES product stimulates the significant changes of gene expression in several functional categories and these mainly include transcripts related to cell proliferation. The TGF-β and EGF signal transduction pathways are indicated as the possible pathways of O. viverrini-driven cell proliferation.
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Affiliation(s)
- Chanitra Thuwajit
- Department of Biochemistry, Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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McVeigh P, Leech S, Marks NJ, Geary TG, Maule AG. Gene expression and pharmacology of nematode NLP-12 neuropeptides. Int J Parasitol 2006; 36:633-40. [PMID: 16600246 DOI: 10.1016/j.ijpara.2006.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2005] [Revised: 01/19/2006] [Accepted: 01/30/2006] [Indexed: 11/30/2022]
Abstract
This study examines the biology of NLP-12 neuropeptides in Caenorhabditis elegans, and in the parasitic nematodes Ascaris suum and Trichostrongylus colubriformis. DYRPLQFamide (1 nM-10 microM; n > or =6) produced contraction of innervated dorsal and ventral Ascaris body wall muscle preparations (10 microM, 6.8+/-1.9 g; 1 microM, 4.6+/-1.8 g; 0.1 microM, 4.1+/-2.0 g; 10 nM, 3.8+/-2.0 g; n > or =6), and also caused a qualitatively similar, but quantitatively lower contractile response (10 microM, 4.0+/-1.5 g, n=6) on denervated muscle strips. Ovijector muscle displayed no measurable response (10 microM, n=5). nlp-12 cDNAs were characterised from A. suum (As-nlp-12) and T. colubriformis (Tc-nlp-12), both of which show sequence similarity to C. elegans nlp-12, in that they encode multiple copies of -LQFamide peptides. In C. elegans, reverse transcriptase (RT)-PCR analysis showed that nlp-12 was transcribed throughout the life cycle, suggesting that DYRPLQFamide plays a constitutive role in the nervous system of this nematode. Transcription was also identified in both L3 and adult stages of T. colubriformis, in which Tc-nlp-12 is expressed in a single tail neurone. Conversely, As-nlp-12 is expressed in both head and tail tissue of adult female A. suum, suggesting species-specific differences in the transcription pattern of this gene.
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Affiliation(s)
- Paul McVeigh
- Parasitology Research Group, School of Biology and Biochemistry, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Chaussepied M, Michie AM, Moreau MF, Harnett MM, Harnett W, Langsley G. Notch is constitutively active in Theileria-transformed B cells and can be further stimulated by the filarial nematode-secreted product, ES-62. Microbes Infect 2006; 8:1189-91. [PMID: 16524753 DOI: 10.1016/j.micinf.2005.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2005] [Accepted: 11/17/2005] [Indexed: 01/22/2023]
Abstract
Theileria parva-infected B cells express Jagged-1 and activate Notch signalling in a parasite-dependent manner. ES-62, a filarial nematode-secreted phosphorylcholine-containing glycoprotein, is able to further stimulate Notch-mediated signalling in parasitized cells. Notch is also activated to a similar extent by addition of exogenous IL-10, and this occurs prior to any increase in proliferation in T. parva-infected B cells.
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Lee JC, Cho GS, Kwon JH, Shin MH, Lim JH, Kim WK. Macrophageal/microglial cell activation and cerebral injury induced by excretory–secretory products secreted by Paragonimus westermani. Neurosci Res 2006; 54:133-9. [PMID: 16325294 DOI: 10.1016/j.neures.2005.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2005] [Revised: 10/11/2005] [Accepted: 11/02/2005] [Indexed: 11/22/2022]
Abstract
Cerebral paragonimiasis causes various neurological disorders including seizures, visual impairment and hemiplegia. The excretory-secretory product (ESP) released by Paragonimus westermani has a cysteine protease activity and plays important roles in its migration in the host tissue and modulation of host immune responses. To gain more insight into the pathogenesis of ESP in the brain, we investigated the inflammatory reaction and cerebral injury following microinjection of ESP into rat striatum. The size of injury was maximally observed 3 days after microinjection of ESP and then declined to control levels as astrocytes have repopulated the injury. ED1-positive monocytes and microglia were confluently found inside the injury. The mRNA expression of inducible nitric oxide synthase (iNOS) occurred as early as 9h after ESP injection and then declined to control levels within 1 day. The iNOS inhibitor aminoguanidine largely decreased the expression of iNOS but did not reduce the size of lesion caused by ESP. Interestingly, however, heat inactivation of ESP caused a decrease of injury formation with no altered expression of iNOS. The data indicate that ESP produces brain tissue injury by recruiting activated monocytes/microglia via heat-labile protease activity.
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Affiliation(s)
- Jae-Chul Lee
- Department of Pharmacology, College of Medicine, Ewha Women's Univeristy, Seoul, Republic of Korea
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Marshall FA, Grierson AM, Garside P, Harnett W, Harnett MM. ES-62, an immunomodulator secreted by filarial nematodes, suppresses clonal expansion and modifies effector function of heterologous antigen-specific T cells in vivo. J Immunol 2005; 175:5817-26. [PMID: 16237074 DOI: 10.4049/jimmunol.175.9.5817] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
ES-62 is a phosphorylcholine-containing glycoprotein secreted by filarial nematodes, which has previously been shown to possess a range of immunomodulatory capabilities. We now show, using a CD4+ transgenic TCR T cell adoptive transfer system, that ES-62 can modulate heterologous Ag (OVA)-specific responses in vivo. Thus, in contrast to the mixed IgG1-IgG2a response observed in control animals, ES-62-treated mice exhibited a Th2-biased IgG Ab response as evidenced by stable enhancement of anti-OVA IgG1 production and a profound inhibition of anti-OVA IgG2a. Consistent with this, Ag-specific IFN-gamma produced was suppressed by pre-exposure to ES-62 when T cells were rechallenged ex vivo. However, the response observed was not classical Th2, because although Ag-specific IL-5 production was enhanced by pre-exposure to ES-62, IL-13, and IL-4 were inhibited when T cells were rechallenged ex vivo. Moreover, such T cells produced lower levels of IL-2 and proliferated less upon Ag rechallenge ex vivo. Finally, pre-exposure to ES-62 inhibited the clonal expansion of the transferred Ag-specific CD4+ T cells and altered the functional response of such T cells in vivo, by modulating the kinetics and reducing the extent of their migration into B cell follicles.
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Affiliation(s)
- Fraser A Marshall
- Division of Immunology, Infection and Inflammation, University of Glasgow, Glasgow, United Kingdom
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Kina Y, Fukumoto S, Miura K, Tademoto S, Nunomura K, Dirgahayu P, Hirai K. A glycoprotein from Spirometra erinaceieuropaei plerocercoids suppresses osteoclastogenesis and proinflammatory cytokine gene expression. Int J Parasitol 2005; 35:1399-406. [PMID: 16051245 DOI: 10.1016/j.ijpara.2005.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2005] [Revised: 05/23/2005] [Accepted: 05/23/2005] [Indexed: 12/20/2022]
Abstract
Various parasites modify the immune-reactions of the host. We have previously shown that crude excretory/secretory (ES) products from plerocercoids of Spirometra erinaceieuropaei, the plerocercoids of which cause sparganosis in humans, suppress the expression of tumor necrosis factor (TNF)-alpha and IL-1beta in lipopolysaccharide (LPS)-stimulated macrophages. As osteoclasts are cells of the monocyte/macrophage lineage, we hypothesised that ES products might suppress receptor activator of nuclear factor kappaB ligand-induced osteoclastogenesis. Crude ES products from plerocercoids suppressed osteoclastogenesis, judged by tartrate-resistant acid phosphatase (TRAP)-positive multinuclear cell counting, and the mature osteoclast-specific gene expression (calcitonin receptor and TRAP). Second, we purified the inhibitory factor for osteoclastogenesis from the crude ES products. The factor was a trypsin-sensitive glycoprotein and had a relative molecular mass of 90 kDa. The glycoprotein, plerocercoid-immunosuppressive factor, from crude ES products could suppress the gene expression of TNF-alpha, IL-1beta and NO synthesis in LPS-stimulated RAW264.7 macrophages.
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Affiliation(s)
- Yuriko Kina
- Division of Molecular Medical Zoology, Department of Microbiology and Pathology, Faculty of Medicine, Tottori University, 86 Nishi-cho, Tottori, Yonago 683-8503, Japan
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