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Rosso DA, Rosato M, Gómez FD, Álvarez RS, Shiromizu CM, Keitelman IA, Ibarra C, Amaral MM, Jancic CC. Human Glomerular Endothelial Cells Treated With Shiga Toxin Type 2 Activate γδ T Lymphocytes. Front Cell Infect Microbiol 2021; 11:765941. [PMID: 34900753 PMCID: PMC8656354 DOI: 10.3389/fcimb.2021.765941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 10/19/2021] [Indexed: 12/02/2022] Open
Abstract
The hemolytic uremic syndrome associated with diarrhea, a consequence of Shiga toxin (Stx)-producing Escherichia coli infection, is a common cause of pediatric acute renal failure in Argentina. Stx type 2a (Stx2a) causes direct damage to renal cells and induces local inflammatory responses that involve secretion of inflammatory mediators and the recruitment of innate immune cells. γδ T cells constitute a subset of T lymphocytes, which act as early sensors of cellular stress and infection. They can exert cytotoxicity against infected and transformed cells, and produce cytokines and chemokines. In this study, we investigated the activation of human peripheral γδ T cells in response to the incubation with Stx2a-stimulated human glomerular endothelial cells (HGEC) or their conditioned medium, by analyzing in γδ T lymphocytes, the expression of CD69, CD107a, and perforin, and the production of TNF-α and IFN-γ. In addition, we evaluated by confocal microscopy the contact between γδ T cells and HGEC. This analysis showed an augmentation in cellular interactions in the presence of Stx2a-stimulated HGEC compared to untreated HGEC. Furthermore, we observed an increase in cytokine production and CD107a expression, together with a decrease in intracellular perforin when γδ T cells were incubated with Stx2a-treated HGEC or their conditioned medium. Interestingly, the blocking of TNF-α by Etanercept reversed the changes in the parameters measured in γδ T cells incubated with Stx2a-treated HGEC supernatants. Altogether, our results suggest that soluble factors released by Stx2a-stimulated HGEC modulate the activation of γδ T cells, being TNF-α a key player during this process.
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Affiliation(s)
- David Antonio Rosso
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina., Buenos Aires, Argentina
| | - Micaela Rosato
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina., Buenos Aires, Argentina
| | - Fernando Daniel Gómez
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Romina Soledad Álvarez
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina Maiumi Shiromizu
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina., Buenos Aires, Argentina
| | - Irene Angélica Keitelman
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina., Buenos Aires, Argentina
| | - Cristina Ibarra
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - María Marta Amaral
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina Cristina Jancic
- Instituto de Medicina Experimental-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina., Buenos Aires, Argentina.,Departamento de Microbiología, Parasitología e Inmunología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
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Terada D, Voet ARD, Noguchi H, Kamata K, Ohki M, Addy C, Fujii Y, Yamamoto D, Ozeki Y, Tame JRH, Zhang KYJ. Computational design of a symmetrical β-trefoil lectin with cancer cell binding activity. Sci Rep 2017; 7:5943. [PMID: 28724971 PMCID: PMC5517649 DOI: 10.1038/s41598-017-06332-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/12/2017] [Indexed: 01/24/2023] Open
Abstract
Computational protein design has advanced very rapidly over the last decade, but there remain few examples of artificial proteins with direct medical applications. This study describes a new artificial β-trefoil lectin that recognises Burkitt’s lymphoma cells, and which was designed with the intention of finding a basis for novel cancer treatments or diagnostics. The new protein, called “Mitsuba”, is based on the structure of the natural shellfish lectin MytiLec-1, a member of a small lectin family that uses unique sequence motifs to bind α-D-galactose. The three subdomains of MytiLec-1 each carry one galactose binding site, and the 149-residue protein forms a tight dimer in solution. Mitsuba (meaning “three-leaf” in Japanese) was created by symmetry constraining the structure of a MytiLec-1 subunit, resulting in a 150-residue sequence that contains three identical tandem repeats. Mitsuba-1 was expressed and crystallised to confirm the X-ray structure matches the predicted model. Mitsuba-1 recognises cancer cells that express globotriose (Galα(1,4)Galβ(1,4)Glc) on the surface, but the cytotoxicity is abolished.
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Affiliation(s)
- Daiki Terada
- Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa, 230-0045, Japan.,Structural Bioinformatics Team, Division of Structural and Synthetic Biology, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan
| | - Arnout R D Voet
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Celestijnenlaan 200G, 3001, Heverlee, Belgium
| | - Hiroki Noguchi
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Celestijnenlaan 200G, 3001, Heverlee, Belgium
| | - Kenichi Kamata
- Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa, 230-0045, Japan
| | - Mio Ohki
- Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa, 230-0045, Japan
| | - Christine Addy
- Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa, 230-0045, Japan
| | - Yuki Fujii
- Department of Pharmacy, Graduate School of Pharmaceutical Science, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki, 859-3298, Japan
| | - Daiki Yamamoto
- Laboratory of Glycobiology and Marine Biochemistry, Graduate School of NanoBio Sciences, Yokohama City University, 22-2, Seto, Yokohama, Kanagawa, 236-0027, Japan
| | - Yasuhiro Ozeki
- Laboratory of Glycobiology and Marine Biochemistry, Graduate School of NanoBio Sciences, Yokohama City University, 22-2, Seto, Yokohama, Kanagawa, 236-0027, Japan
| | - Jeremy R H Tame
- Graduate School of Medical Life Science, Yokohama City University, 1-7-29 Suehiro, Yokohama, Kanagawa, 230-0045, Japan.
| | - Kam Y J Zhang
- Structural Bioinformatics Team, Division of Structural and Synthetic Biology, Center for Life Science Technologies, RIKEN, 1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa, 230-0045, Japan.
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Wöchtl B, Gunzer F, Gerner W, Gasse H, Koch M, Bagó Z, Ganter M, Weissenböck H, Dinhopl N, Coldewey SM, von Altrock A, Waldmann KH, Saalmüller A, Zimmermann K, Steinmann J, Kehrmann J, Klein-Hitpass L, Blom J, Ehricht R, Engelmann I, Hennig-Pauka I. Comparison of clinical and immunological findings in gnotobiotic piglets infected with Escherichia coli O104:H4 outbreak strain and EHEC O157:H7. Gut Pathog 2017; 9:30. [PMID: 28559930 PMCID: PMC5445466 DOI: 10.1186/s13099-017-0179-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/17/2017] [Indexed: 11/26/2022] Open
Abstract
Background Shiga toxin (Stx) producing Escherichia coli (E. coli) (STEC) is the most frequent cause of diarrhoea-positive haemolytic uraemic syndrome (D + HUS) in humans. In 2011, a huge outbreak with an STEC O104:H4 strain in Germany highlighted the limited possibilities for causative treatment of this syndrome. The responsible STEC strain was found to combine Stx production with adherence mechanisms normally found in enteroaggregative E. coli (EAEC). Pathotypes of E. coli evolve and can exhibit different adhesion mechanisms. It has been shown previously that neonatal gnotobiotic piglets are susceptible for infection with STEC, such as STEC O157:H7 as well as for EAEC, which are considered to be the phylogenetic origin of E. coli O104:H4. This study was designed to characterise the host response to infection with the STEC O104:H4 outbreak strain in comparison to an STEC O157:H7 isolate by evaluating clinical parameters (scoring) and markers of organ dysfunction (biochemistry), as well as immunological (flow cytometry, assessment of cytokines/chemokines and acute phase proteins) and histological alterations (light- and electron microscopy) in a gnotobiotic piglet model of haemolytic uraemic syndrome. Results We observed severe clinical symptoms, such as diarrhoea, dehydration and neurological disorders as well as attaching-and-effacing lesions (A/E) in the colon in STEC O157:H7 infected piglets. In contrast, STEC O104:H4 challenged animals exhibited only mild clinical symptoms including diarrhoea and dehydration and HUS-specific/severe histopathological, haematological and biochemical alterations were only inconsistently presented by individual piglets. A specific adherence phenotype of STEC O104:H4 could not be observed. Flow cytometric analyses of lymphocytes derived from infected animals revealed an increase of natural killer cells (NK cells) during the course of infection revealing a potential role of this subset in the anti-bacterial activity in STEC disease. Conclusions Unexpectedly, E. coli O104:H4 infection caused only mild symptoms and minor changes in histology and blood parameters in piglets. Outcome of the infection trial does not reflect E. coli O104:H4 associated human disease as observed during the outbreak in 2011. The potential role of cells of the innate immune system for STEC related disease pathogenesis should be further elucidated.
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Affiliation(s)
- Bettina Wöchtl
- University Clinic for Swine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | - Florian Gunzer
- Institute of Medical Microbiology and Hygiene, Faculty of Medicine Carl Gustav Carus, TU Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Wilhelm Gerner
- Institute of Immunology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | - Hagen Gasse
- Institute of Anatomy, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Michaela Koch
- University Clinic for Swine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | - Zoltán Bagó
- Institute for Veterinary Disease Control Mödling, Austrian Agency for Health and Food Safety, Robert-Koch-Gasse 17, 2340 Mödling, Austria
| | - Martin Ganter
- Clinic for Swine, Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Herbert Weissenböck
- Institute for Pathology and Forensic Veterinary Medicine, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | - Nora Dinhopl
- Institute for Pathology and Forensic Veterinary Medicine, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | - Sina M Coldewey
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany.,Centre for Innovation Competence (ZIK) Septomics, University Hospital Jena, Albert-Einstein-Strasse 10, 07745 Jena, Germany
| | - Alexandra von Altrock
- Clinic for Swine, Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Karl-Heinz Waldmann
- Clinic for Swine, Small Ruminants, Forensic Medicine and Ambulatory Service, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Armin Saalmüller
- Institute of Immunology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
| | | | - Jörg Steinmann
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147 Essen, Germany
| | - Jan Kehrmann
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147 Essen, Germany
| | - Ludger Klein-Hitpass
- Institute of Cell Biology, Medical Faculty, University Hospital Essen, University of Duisburg-Essen, Hufelandstraße 55, 45147 Essen, Germany
| | - Jochen Blom
- Bioinformatics and Systems Biology, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 58, 35392 Gießen, Germany
| | - Ralf Ehricht
- Alere Technologies GmbH, Löbstedter Straße 103-105, 07749 Jena, Germany
| | - Ines Engelmann
- Alere Technologies GmbH, Löbstedter Straße 103-105, 07749 Jena, Germany
| | - Isabel Hennig-Pauka
- University Clinic for Swine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1220 Vienna, Austria
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Chen J, Lin T. [Expression of regulatory T cells and natural killer T cells in peripheral blood of children with Wilms tumor]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:1222-1226. [PMID: 27974111 PMCID: PMC7403072 DOI: 10.7499/j.issn.1008-8830.2016.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 09/14/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To study the changes and clinical significance of CD4+CD25+CD127low regulatory T cells (Treg) and CD3+CD16+CD56+ natural killer T cells (NKT) in peripheral blood of children with Wilms tumor. METHODS Twenty-one children with Wilms tumor were enrolled as the case group, and twenty-one healthy children for physical examinations were enrolled as the control group. Flow cytometry was used to detect the levels of CD4+CD25+CD127low T cells and CD3+CD16+CD56+ T cells in peripheral blood of two groups. RESULTS The level of Treg cells in peripheral blood of the case group was significantly lower than in the control group (p<0.05). The level of NKT cells in peripheral blood of the case group was significantly higher than in the control group (p<0.05). CONCLUSIONS Treg cells and NKT cells play important roles in the occurrence and development of Wilms tumor. Treg cells and NKT cells may be useful indexes for evaluating immunological function in children with Wilms tumor.
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Affiliation(s)
- Jing Chen
- Department of Urology, Children's Hospital of Chongqing Medical University; Pediatric Research Institute of Children's Hospital of Chongqing Medical University; Chongqing Key Laboratory of Pediatrics; Ministry of Education Key Laboratory of Child Development and Disorders; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China.
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Zhou D, Zhu YH, Zhang W, Wang ML, Fan WY, Song D, Yang GY, Jensen BB, Wang JF. Oral administration of a select mixture of Bacillus probiotics generates Tr1 cells in weaned F4ab/acR- pigs challenged with an F4+ ETEC/VTEC/EPEC strain. Vet Res 2015; 46:95. [PMID: 26384321 PMCID: PMC4574530 DOI: 10.1186/s13567-015-0223-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 08/17/2015] [Indexed: 12/18/2022] Open
Abstract
Although breeding of F4 receptor − negative (F4R−) pigs may prevent post-weaning diarrhea, the underlying immunity is poorly understood. Here, various doses of a Bacillus licheniformis and Bacillus subtilis mixture (BLS-mix) were orally administered to F4ab/acR− pigs for 1 week before F4 (K88) − positive ETEC/VTEC/EPEC challenge. Administration of BLS-mix increased the percentage of Foxp3−IL-10+ T cells but not of Foxp3+IL-10+ regulatory T (Treg) cells among peripheral blood CD4+ T cells. A low dose of BLS-mix feeding resulted in increased the expression of IL-6, TNF-α, IL-10, and the transcription factors Foxp3 and T-bet mRNAs in the jejunum. Administration of either a low or high dose BLS-mix also led to an increase in the percentage of CD4+Foxp3+ Treg cells among intraepithelial lymphocytes and CD4+IL-10+ T cells in the small intestinal Peyer’s patches and the lamina propria of F4ab/acR− pigs following F4+ ETEC/VTEC/EPEC challenge. The increased number of IL-10–producing CD4+ T cells was attributed to an increase in the proportion of Foxp3−IL-10+ Treg cells rather than Foxp3+IL-10+ Treg cells. Our data indicate that oral administration of BLS-mix to newly weaned F4ab/acR− pigs ameliorates enteritis in an F4+ ETEC/VTEC/EPEC model; however, induction of IL-10–producing Foxp3− Treg cells by BLS-mix administration cannot account for the protection of newly weaned F4ab/acR− pigs from F4+ ETEC/VTEC/EPEC infection, and that excessive generation of CD4+IL-10+ T cells following consumption of BLS-mix during episodes of intestinal inflammation that is caused by enteric pathogens might prohibit clearance of the pathogen. Select probiotic mixtures may allow for tailoring strategies to prevent infectious diseases.
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Affiliation(s)
- Dong Zhou
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Yao-Hong Zhu
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Wei Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Meng-Ling Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Wen-Yi Fan
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Dan Song
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Gui-Yan Yang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Bent Borg Jensen
- Division of Microbiology and Immunology, Danish Center for Food and Agriculture, Aarhus University, DK 8830, Tjele, Denmark.
| | - Jiu-Feng Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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