1
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Hervé J, Haurogné K, Allard M, Sourice S, Lindenbaum P, Bach JM, Lieubeau B. Spontaneous Akt2 deficiency in a colony of NOD mice exhibiting early diabetes. Sci Rep 2024; 14:9100. [PMID: 38643275 PMCID: PMC11032318 DOI: 10.1038/s41598-024-60021-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024] Open
Abstract
Diabetes constitutes a major public health problem, with dramatic consequences for patients. Both genetic and environmental factors were shown to contribute to the different forms of the disease. The monogenic forms, found both in humans and in animal models, specially help to decipher the role of key genes in the physiopathology of the disease. Here, we describe the phenotype of early diabetes in a colony of NOD mice, with spontaneous invalidation of Akt2, that we called HYP. The HYP mice were characterised by a strong and chronic hyperglycaemia, beginning around the age of one month, especially in male mice. The phenotype was not the consequence of the acceleration of the autoimmune response, inherent to the NOD background. Interestingly, in HYP mice, we observed hyperinsulinemia before hyperglycaemia occurred. We did not find any difference in the pancreas' architecture of the NOD and HYP mice (islets' size and staining for insulin and glucagon) but we detected a lower insulin content in the pancreas of HYP mice compared to NOD mice. These results give new insights about the role played by Akt2 in glucose homeostasis and argue for the ß cell failure being the primary event in the course of diabetes.
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2
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Viklicky O, Slatinska J, Janousek L, Rousse J, Royer PJ, Toutain PL, Cozzi E, Galli C, Evanno G, Duvaux O, Bach JM, Soulillou JP, Giral M, Vanhove B, Blancho G. First-in-human Study With LIS1, a Next-generation Porcine Low Immunogenicity Antilymphocyte Immunoglobulin in Kidney Transplantation. Transplantation 2024:00007890-990000000-00682. [PMID: 38421879 DOI: 10.1097/tp.0000000000004967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
BACKGROUND Polyclonal rabbit antithymocyte globulins (ATGs) are commonly used in organ transplantation as induction. Anti-N-glycolylneuraminic acid carbohydrate antibodies which develop in response to rabbit carbohydrate antigens might lead to unwanted systemic inflammation. LIS1, the first new generation of antilymphocyte globulins (ALGs) derived from double knockout swine, lacking carbohydrate xenoantigens was already tested in nonhuman primates and rodent models. METHODS This open-label, single-site, dose escalation, first-in-human, phase 1 study evaluated the safety, T cell depletion, pharmacokinetics, and pharmacodynamics of LIS1. In an ascending dose cohort (n = 5), a primary kidney transplant recipient at low immunologic risk (panel reactive antibody [PRA] < 20%), received LIS1 for 5 d at either 0.6, 1, 3, 6, or 8 mg/kg. After each patient completed treatment, the data safety monitoring board approved respective dose escalation. In the therapeutic dose cohort (n = 5) in patients with PRA <50% without donor specific antibodies, 2 patients received 8 mg/kg and 3 patients 10 mg/kg. RESULTS CD3+ T cell depletion <100/mm3 at day 2 was observed in all patients who received 6, 8, and 10 mg/kg of LIS1. The terminal half-life of LIS1 was 33.7 d with linearity in its disposition. Lymphocyte repopulation was fast and pretransplant lymphocyte subpopulation counts recovered within 2-4 wk. LIS1 was well tolerated, neither cytokine release syndrome nor severe thrombocytopenia or leukopenia were noticed. Antibodies to LIS1 were not detected. CONCLUSIONS In this first-in-human trial, genome-edited swine-derived polyclonal LIS1 ALG was well tolerated, did not elicit antidrug antibodies, and caused time-limited T cell depletion in low- and medium-risk kidney transplant recipients.
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Affiliation(s)
- Ondrej Viklicky
- Department of Nephrology, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | - Janka Slatinska
- Department of Nephrology, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | - Libor Janousek
- Department of Nephrology, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | | | | | - Pierre-Louis Toutain
- Comparative Biomedical Sciences, The Royal Veterinary College, London, United Kingdom
- INTHERES, Université de Toulouse, INRAE, ENVT, Toulouse, France
| | - Emanuele Cozzi
- Transplantation Immunology Unit, Padua University Hospital, Padova, Italy
| | - Cesare Galli
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
| | | | | | | | - Jean-Paul Soulillou
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
- Nantes Université, INSERM UMR1064, Center for Research in Transplantation and Translational Immunology, Nantes, France
| | - Magali Giral
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
- Nantes Université, INSERM UMR1064, Center for Research in Transplantation and Translational Immunology, Nantes, France
| | | | - Gilles Blancho
- Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
- Nantes Université, INSERM UMR1064, Center for Research in Transplantation and Translational Immunology, Nantes, France
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3
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Gavaud S, Haurogné K, Buchet A, Garcia Vinado I, Allard M, Lehébel A, Leblanc-Maridor M, Bach JM, Belloc C, Lieubeau B, Hervé J. Effects of improved early-life conditions on health, welfare, and performance of pigs raised on a conventional farm. Animal 2023; 17:100810. [PMID: 37172358 DOI: 10.1016/j.animal.2023.100810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/30/2023] [Accepted: 04/03/2023] [Indexed: 05/14/2023] Open
Abstract
Nowadays, most pigs are raised indoors, on intensive farms providing a poor environment. In these conditions, the risk of the occurrence of damaging behaviours is high, with dramatic consequences for animal health and welfare as well as economic losses for farmers. Early-life conditions may predispose individuals to develop damaging behaviours later in life. In contrast, reinforcing affiliative behaviours between piglets before weaning might help to prevent tail-biting episodes. In this field study, we aimed at improving early-life conditions of piglets on a commercial farm by completely suppressing painful procedures and staggering their exposure to weaning stress factors. The alternative early-life management strategy combined housing in free-farrowing pens with temporary crating of the sow, socialisation during the lactation period with whole-life maintenance of the hierarchical groups, and delayed transfer to the postweaning room after sow removal. Control conditions included birth in farrowing crates, tail docking, absence of socialisation during the lactation period, abrupt weaning with immediate transfer to the postweaning room and mixing with non-littermates. We evaluated the health, welfare, and performance of alternatively raised pigs (n = 80) as compared to controls (n = 75). Visits were made throughout the lifespan of individuals to evaluate their growth and health status. Body and tail lesions were scored as proxy measures of aggressiveness and impaired welfare. Blood and bristle samples were periodically collected to evaluate stress, inflammation and immune competence. While the whole-life performance of pigs was similar among groups, the alternative early-life conditions prevented the growth slowdown usually observed after weaning. In addition, alternatively raised pigs displayed more neutrophils, eosinophils and monocytes the day after weaning, as well as higher C-Reactive Protein levels. One week later, their monocytes displayed greater phagocytic capacity. Altogether, these data suggest an enhanced innate immune competence for alternatively raised pigs around weaning. Piglets reared under alternative conditions also exhibited fewer and less severe body lesions than standard pigs, one week after weaning. In contrast, they showed more tail lesions on days 36 and 66 associated with greater levels of acute phase proteins (C-Reactive Protein and haptoglobin). To conclude, alternative early-life management better prepared piglets for weaning. However, the whole-life maintenance of early-established social groups was not sufficient to prevent the occurrence of damaging behaviours in undocked pigs.
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Affiliation(s)
- S Gavaud
- Oniris, INRAE, IECM, Nantes, France
| | | | - A Buchet
- Cooperl Innovation, Lamballe, France
| | | | - M Allard
- Oniris, INRAE, IECM, Nantes, France
| | - A Lehébel
- Oniris, INRAE, BIOEPAR, Nantes, France
| | | | - J M Bach
- Oniris, INRAE, IECM, Nantes, France
| | - C Belloc
- Oniris, INRAE, BIOEPAR, Nantes, France
| | | | - J Hervé
- Oniris, INRAE, IECM, Nantes, France.
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4
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Rousse J, Royer PJ, Evanno G, Lheriteau E, Ciron C, Salama A, Shneiker F, Duchi R, Perota A, Galli C, Cozzi E, Blancho G, Duvaux O, Brouard S, Soulillou JP, Bach JM, Vanhove B. LIS1, a glyco-humanized swine polyclonal anti-lymphocyte globulin, as a novel induction treatment in solid organ transplantation. Front Immunol 2023; 14:1137629. [PMID: 36875084 PMCID: PMC9978386 DOI: 10.3389/fimmu.2023.1137629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/03/2023] [Indexed: 02/18/2023] Open
Abstract
Anti-thymocyte or anti-lymphocyte globulins (ATGs/ALGs) are immunosuppressive drugs used in induction therapies to prevent acute rejection in solid organ transplantation. Because animal-derived, ATGs/ALGs contain highly immunogenic carbohydrate xenoantigens eliciting antibodies that are associated with subclinical inflammatory events, possibly impacting long-term graft survival. Their strong and long-lasting lymphodepleting activity also increases the risk for infections. We investigated here the in vitro and in vivo activity of LIS1, a glyco-humanized ALG (GH-ALG) produced in pigs knocked out for the two major xeno-antigens αGal and Neu5Gc. It differs from other ATGs/ALGs by its mechanism of action excluding antibody-dependent cell-mediated cytotoxicity and being restricted to complement-mediated cytotoxicity, phagocyte-mediated cytotoxicity, apoptosis and antigen masking, resulting in profound inhibition of T-cell alloreactivity in mixed leucocyte reactions. Preclinical evaluation in non-human primates showed that GH-ALG dramatically reduced CD4+ (p=0.0005,***), CD8+ effector T cells (p=0.0002,***) or myeloid cells (p=0.0007,***) but not T-reg (p=0.65, ns) or B cells (p=0.65, ns). Compared with rabbit ATG, GH-ALG induced transient depletion (less than one week) of target T cells in the peripheral blood (<100 lymphocytes/L) but was equivalent in preventing allograft rejection in a skin allograft model. The novel therapeutic modality of GH-ALG might present advantages in induction treatment during organ transplantation by shortening the T-cell depletion period while maintaining adequate immunosuppression and reducing immunogenicity.
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Affiliation(s)
| | | | | | | | - Carine Ciron
- Research and Development, Xenothera, Nantes, France
| | - Apolline Salama
- Nantes Université, Inserm, University Hospital Center CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, Nantes, France
| | | | - Roberto Duchi
- Transplantation Immunology Unit, Padua University Hospital, Padova, Italy
| | - Andrea Perota
- Transplantation Immunology Unit, Padua University Hospital, Padova, Italy
| | - Cesare Galli
- Transplantation Immunology Unit, Padua University Hospital, Padova, Italy
| | - Emmanuele Cozzi
- Avantea, Laboratorio di Tecnologie della Riproduzione, Cremona, Italy
| | - Gilles Blancho
- Nantes Université, Inserm, University Hospital Center CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, Nantes, France
| | - Odile Duvaux
- Research and Development, Xenothera, Nantes, France
| | - Sophie Brouard
- Nantes Université, Inserm, University Hospital Center CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, Nantes, France
| | - Jean-Paul Soulillou
- Nantes Université, Inserm, University Hospital Center CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, Nantes, France
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5
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Hervé J, Haurogné K, Buchet A, Bacou E, Mignot G, Allard M, Leblanc-Maridor M, Gavaud S, Lehébel A, Terenina E, Mormède P, Merlot E, Belloc C, Bach JM, Lieubeau B. Pathogen exposure influences immune parameters around weaning in pigs reared in commercial farms. BMC Immunol 2022; 23:61. [PMID: 36496363 PMCID: PMC9737769 DOI: 10.1186/s12865-022-00534-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Multiple antigenic stimulations are crucial to immune system training during early post-natal life. These stimulations can be either due to commensals, which accounts for the acquisition and maintenance of tolerance, or to pathogens, which triggers immunity. In pig, only few works previously explored the influence of natural exposition to pathogens upon immune competence. We propose herein the results of a multicentric, field study, conducted on 265 piglets exposed to contrasted pathogen levels in their living environment. Piglets were housed in 15 different commercial farms, sorted in two groups, low (HSLOW)- and high (HSHIGH)-health status farms, depending on their recurrent exposition to five common swine pathogens. RESULTS Using animal-based measures, we compared the immune competence and growth performances of HSLOW and HSHIGH pigs around weaning. As expected, we observed a rise in the number of circulating leucocytes with age, which affected different cell populations. Monocyte, antigen-experienced and cytotoxic lymphocyte subpopulation counts were higher in piglets reared in HSLOW farms as compared to their HSHIGH homologs. Also, the age-dependent evolution in γδ T cell and neutrophil counts was significantly affected by the health status. With age, circulating IFNα level decreased and IgM level increased while being greater in HSLOW piglets at any time. After weaning, LPS-stimulated blood cells derived from HSLOW piglets were more prone to secrete IL-8 than those derived from HSHIGH pigs did. Monocytes and granulocytes issued from HSLOW pigs also exhibited comparable phagocytosis capacity. Altogether our data emphasize the more robust immunophenotype of HSLOW piglets. Finally, piglets raised under higher pathogen pressure grew less than HSHIGH piglets did and exhibited a different metabolic profile. The higher cost of the immune responses associated with the low farm health status may account for lower HSLOW piglet performances. CONCLUSIONS Altogether, our data, obtained in field conditions, provide evidence that early exposure to pathogens shapes the immune competence of piglets. They also document the negative impact of an overstimulation of the immune system on piglets' growth.
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Affiliation(s)
- Julie Hervé
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | - Karine Haurogné
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | - Arnaud Buchet
- grid.463756.50000 0004 0497 3491Institut Agro, INRAE, PEGASE, St Gilles, France ,grid.418682.10000 0001 2175 3974Oniris, INRAE, BIOEPAR, Nantes, France ,Cooperl Innovation, Pôle Sciences Animales, Lamballe, France
| | - Elodie Bacou
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | - Grégoire Mignot
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | - Marie Allard
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | | | - Solenn Gavaud
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
| | - Anne Lehébel
- grid.418682.10000 0001 2175 3974Oniris, INRAE, BIOEPAR, Nantes, France
| | - Elena Terenina
- grid.508721.9Université de Toulouse, ENVT, INRAE, GenPhySE, Castanet-Tolosan, France
| | - Pierre Mormède
- grid.508721.9Université de Toulouse, ENVT, INRAE, GenPhySE, Castanet-Tolosan, France
| | - Elodie Merlot
- grid.463756.50000 0004 0497 3491Institut Agro, INRAE, PEGASE, St Gilles, France
| | - Catherine Belloc
- grid.418682.10000 0001 2175 3974Oniris, INRAE, BIOEPAR, Nantes, France
| | - Jean-Marie Bach
- grid.418682.10000 0001 2175 3974Oniris, INRAE, IECM, Nantes, France
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6
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Mouré A, Bekir S, Bacou E, Pruvost Q, Haurogné K, Allard M, De Beaurepaire L, Bosch S, Riochet D, Gauthier O, Blancho G, Soulillou JP, Poncelet D, Mignot G, Courcoux P, Jegou D, Bach JM, Mosser M. Optimization of an O 2-balanced bioartificial pancreas for type 1 diabetes using statistical design of experiment. Sci Rep 2022; 12:4681. [PMID: 35304495 PMCID: PMC8933496 DOI: 10.1038/s41598-022-07887-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 02/03/2022] [Indexed: 01/17/2023] Open
Abstract
A bioartificial pancreas (BAP) encapsulating high pancreatic islets concentration is a promising alternative for type 1 diabetes therapy. However, the main limitation of this approach is O2 supply, especially until graft neovascularization. Here, we described a methodology to design an optimal O2-balanced BAP using statistical design of experiment (DoE). A full factorial DoE was first performed to screen two O2-technologies on their ability to preserve pseudo-islet viability and function under hypoxia and normoxia. Then, response surface methodology was used to define the optimal O2-carrier and islet seeding concentrations to maximize the number of viable pseudo-islets in the BAP containing an O2-generator under hypoxia. Monitoring of viability, function and maturation of neonatal pig islets for 15 days in vitro demonstrated the efficiency of the optimal O2-balanced BAP. The findings should allow the design of a more realistic BAP for humans with high islets concentration by maintaining the O2 balance in the device.
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Affiliation(s)
- Anne Mouré
- Oniris, INRAE, IECM, USC 1383, 44300, Nantes, France
| | - Sawsen Bekir
- Oniris, INRAE, IECM, USC 1383, 44300, Nantes, France
| | - Elodie Bacou
- Oniris, INRAE, IECM, USC 1383, 44300, Nantes, France
| | | | | | - Marie Allard
- Oniris, INRAE, IECM, USC 1383, 44300, Nantes, France
| | | | - Steffi Bosch
- Oniris, INRAE, IECM, USC 1383, 44300, Nantes, France
| | - David Riochet
- SSR Pédiatriques ESEAN-APF France Handicap, Nantes University Hospital, Nantes, France
| | - Olivier Gauthier
- Oniris, Nantes Université, INSERM, RMeS, UMR 1229, F-44000, Nantes, France
| | - Gilles Blancho
- CRTI, UMR 1064, INSERM, Nantes Université, 44000, Nantes, France.,ITUN, CHU Nantes, 44000, Nantes, France
| | - Jean-Paul Soulillou
- CRTI, UMR 1064, INSERM, Nantes Université, 44000, Nantes, France.,ITUN, CHU Nantes, 44000, Nantes, France
| | - Denis Poncelet
- GEPEA, UMR CNRS 6144 FR, Nantes Université, 44000, Nantes, France
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7
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Hernandez J, Rouillé E, Chocteau F, Allard M, Haurogné K, Lezin F, Hervé JM, Bach JM, Abadie J, Lieubeau B. Nonhypoalbuminemic Inflammatory Bowel Disease in Dogs as Disease Model. Inflamm Bowel Dis 2021; 27:1975-1985. [PMID: 33783501 DOI: 10.1093/ibd/izab064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND The incidence of inflammatory bowel disease (IBD) is increasing worldwide, emphasizing the need of relevant models, as dogs spontaneously affected by IBD may be, for better knowledge of the disease's physiopathology. METHODS We studied 22 client-owned dogs suffering from IBD without protein loss and 14 control dogs. Biopsies were obtained from the duodenum, ileum, and colon. Inflammatory grade was assessed by histopathology, immunohistochemistry, and chemokine analysis. The expression of Toll-like receptors (TLR) in mucosa was immunohistochemically evaluated. Antibody levels against bacterial ligands (lipopolysaccharide [LPS] and flagellin) were measured in sera using enzyme-linked immunoassay. RESULTS Dogs with IBD showed low to severe clinical disease. Histopathologically, the gut of dogs with IBD did not exhibit significant alterations compared with controls except in the colon. The number of CD3+ T lymphocytes was decreased in the ileum and colon of dogs with IBD compared with controls, whereas the numbers of Foxp3+, CD20+, and CD204+ cells were similar in the 2 groups. Three chemokines, but no cytokines, were detected at the protein level in the mucosa, and the disease poorly affected their tissue concentrations. Dogs with IBD exhibited higher serum reactivity against LPS and flagellin than controls but similar immunoreactivity against the receptors TLR4 and TLR5. In addition, TLR2 and TLR9 showed similar expression patterns in both groups of dogs. CONCLUSIONS Our data described dysregulated immune responses in dogs affected by IBD without protein loss. Despite fairly homogeneous dog cohorts, we were still faced with interindividual variability, and new studies with larger cohorts are needed to validate the dog as a model.
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Affiliation(s)
- Juan Hernandez
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
| | | | | | - Marie Allard
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
| | - Karine Haurogné
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
| | | | - Julie M Hervé
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
| | - Jean-Marie Bach
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
| | | | - Blandine Lieubeau
- IECM, Oniris (Nantes-Atlantic National College of Veterinary Medicine, Food Science and Engineering), INRAE, Nantes, France
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8
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Vanhove B, Duvaux O, Rousse J, Royer PJ, Evanno G, Ciron C, Lheriteau E, Vacher L, Gervois N, Oger R, Jacques Y, Conchon S, Salama A, Duchi R, Lagutina I, Perota A, Delahaut P, Ledure M, Paulus M, So RT, Mok CKP, Bruzzone R, Bouillet M, Brouard S, Cozzi E, Galli C, Blanchard D, Bach JM, Soulillou JP. High neutralizing potency of swine glyco-humanized polyclonal antibodies against SARS-CoV-2. Eur J Immunol 2021; 51:1412-1422. [PMID: 33576494 PMCID: PMC8014652 DOI: 10.1002/eji.202049072] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/20/2021] [Accepted: 02/10/2021] [Indexed: 12/23/2022]
Abstract
Heterologous polyclonal antibodies might represent an alternative to the use of convalescent plasma or monoclonal antibodies (mAbs) in coronavirus disease (COVID‐19) by targeting multiple antigen epitopes. However, heterologous antibodies trigger human natural xenogeneic antibody responses particularly directed against animal‐type carbohydrates, mainly the N‐glycolyl form of the neuraminic acid (Neu5Gc) and the α1,3‐galactose, potentially leading to serum sickness or allergy. Here, we immunized cytidine monophosphate‐N‐acetylneuraminic acid hydroxylase and α1,3‐galactosyl‐transferase (GGTA1) double KO pigs with the Severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) spike receptor binding domain to produce glyco‐humanized polyclonal neutralizing antibodies lacking Neu5Gc and α1,3‐galactose epitopes. Animals rapidly developed a hyperimmune response with anti‐SARS‐CoV‐2 end‐titers binding dilutions over one to a million and end‐titers neutralizing dilutions of 1:10 000. The IgG fraction purified and formulated following clinical Good Manufacturing Practices, named XAV‐19, neutralized spike/angiotensin converting enzyme‐2 interaction at a concentration <1 μg/mL, and inhibited infection of human cells by SARS‐CoV‐2 in cytopathic assays. We also found that pig GH‐pAb Fc domains fail to interact with human Fc receptors, thereby avoiding macrophage‐dependent exacerbated inflammatory responses and a possible antibody‐dependent enhancement. These data and the accumulating safety advantages of using GH‐pAbs in humans warrant clinical assessment of XAV‐19 against COVID‐19.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Romain Oger
- Inserm, CRCINA, Université de Nantes, Nantes, France
| | | | - Sophie Conchon
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, Nantes, France
| | | | - Roberto Duchi
- Avantea, Laboratorio di Tecnologie della Riproduzione, Cremona, Italy
| | - Irina Lagutina
- Avantea, Laboratorio di Tecnologie della Riproduzione, Cremona, Italy
| | - Andrea Perota
- Avantea, Laboratorio di Tecnologie della Riproduzione, Cremona, Italy
| | | | | | | | - Ray T So
- HKU-Pasteur Research Pole, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, P.R. China
| | - Chris Ka-Pun Mok
- HKU-Pasteur Research Pole, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, P.R. China
| | - Roberto Bruzzone
- HKU-Pasteur Research Pole, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, P.R. China.,Department of Cell Biology and Infection, Institut Pasteur, Paris, France
| | | | - Sophie Brouard
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, Nantes, France
| | - Emanuele Cozzi
- Transplantation Immunology Unit, Padua University Hospital, Padova, Italy
| | - Cesare Galli
- Avantea, Laboratorio di Tecnologie della Riproduzione, Cremona, Italy
| | | | - Jean-Marie Bach
- IECM, Immuno-endocrinology, USC1383, Oniris, INRAE, Nantes, France
| | - Jean-Paul Soulillou
- CHU Nantes, Université de Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, Nantes, France
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9
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Bosch S, Young NA, Mignot G, Bach JM. Epigenetic Mechanisms in Immune Disease: The Significance of Toll-Like Receptor-Binding Extracellular Vesicle-Encapsulated microRNA. Front Genet 2020; 11:578335. [PMID: 33193698 PMCID: PMC7662563 DOI: 10.3389/fgene.2020.578335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/05/2020] [Indexed: 12/26/2022] Open
Affiliation(s)
| | - Nicholas A Young
- Division of Rheumatology and Immunology, Department of Internal Medicine, Wexner Medical Center, Ohio State University, Columbus, OH, United States
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10
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Vanhove B, Duvaux O, Rousse J, Royer PJ, Evanno G, Ciron C, Lheriteau E, Vacher L, Gervois N, Oger R, Jacques Y, Conchon S, Salama A, Duchi R, Lagutina I, Perota A, Delahaut P, Ledure M, Paulus M, So RT, Mok CKP, Bruzzone R, Bouillet M, Brouard S, Cozzi E, Galli C, Blanchard D, Bach JM, Soulillou JP. High neutralizing potency of swine glyco-humanized polyclonal antibodies against SARS-CoV-2. bioRxiv 2020. [PMID: 34013271 DOI: 10.1101/2020.07.25.217158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Perfusion of convalescent plasma (CP) has demonstrated a potential to improve the pneumonia induced by SARS-CoV-2, but procurement and standardization of CP are barriers to its wide usage. Many monoclonal antibodies (mAbs) have been developed but appear insufficient to neutralize SARS-CoV-2 unless two or three of them are being combined. Therefore, heterologous polyclonal antibodies of animal origin, that have been used for decades to fight against infectious agents might represent a highly efficient alternative to the use of CP or mAbs in COVID-19 by targeting multiple antigen epitopes. However, conventional heterologous polyclonal antibodies trigger human natural xenogeneic antibody responses particularly directed against animal-type carbohydrate epitopes, mainly the N-glycolyl form of the neuraminic acid (Neu5Gc) and the Gal α1,3-galactose (αGal), ultimately forming immune complexes and potentially leading to serum sickness or allergy. To circumvent these drawbacks, we engineered animals lacking the genes coding for the cytidine monophosphate-N-acetylneuraminic acid hydroxylase (CMAH) and α1,3-galactosyl-transferase (GGTA1) enzymes to produce glyco-humanized polyclonal antibodies (GH-pAb) lacking Neu5Gc and α-Gal epitopes. We found that pig IgG Fc domains fail to interact with human Fc receptors and thereby should confer the safety advantage to avoiding macrophage dependent exacerbated inflammatory responses, a drawback possibly associated with antibody responses against SARS-CoV-2 or to avoiding a possible antibody-dependent enhancement (ADE). Therefore, we immunized CMAH/GGTA1 double knockout (DKO) pigs with the SARS-CoV-2 spike receptor-binding domain (RBD) to elicit neutralizing antibodies. Animals rapidly developed a hyperimmune response with anti-SARS-CoV-2 end-titers binding dilutions over one to a million and end-titers neutralizing dilutions of 1:10,000. The IgG fraction purified and formulated following clinical Good Manufacturing Practices, named XAV-19, neutralized Spike/angiotensin converting enzyme-2 (ACE-2) interaction at a concentration < 1μg/mL and inhibited infection of human cells by SARS-CoV-2 in cytopathic assays. These data and the accumulating safety advantages of using glyco-humanized swine antibodies in humans warranted clinical assessment of XAV-19 to fight against COVID-19.
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11
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Giri KR, de Beaurepaire L, Jegou D, Lavy M, Mosser M, Dupont A, Fleurisson R, Dubreil L, Collot M, Van Endert P, Bach JM, Mignot G, Bosch S. Molecular and Functional Diversity of Distinct Subpopulations of the Stressed Insulin-Secreting Cell's Vesiculome. Front Immunol 2020; 11:1814. [PMID: 33101266 PMCID: PMC7556286 DOI: 10.3389/fimmu.2020.01814] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
Beta cell failure and apoptosis following islet inflammation have been associated with autoimmune type 1 diabetes pathogenesis. As conveyors of biological active material, extracellular vesicles (EV) act as mediators in communication with immune effectors fostering the idea that EV from inflamed beta cells may contribute to autoimmunity. Evidence accumulates that beta exosomes promote diabetogenic responses, but relative contributions of larger vesicles as well as variations in the composition of the beta cell's vesiculome due to environmental changes have not been explored yet. Here, we made side-by-side comparisons of the phenotype and function of apoptotic bodies (AB), microvesicles (MV) and small EV (sEV) isolated from an equal amount of MIN6 beta cells exposed to inflammatory, hypoxic or genotoxic stressors. Under normal conditions, large vesicles represent 93% of the volume, but only 2% of the number of the vesicles. Our data reveal a consistently higher release of AB and sEV and to a lesser extent of MV, exclusively under inflammatory conditions commensurate with a 4-fold increase in the total volume of the vesiculome and enhanced export of immune-stimulatory material including the autoantigen insulin, microRNA, and cytokines. Whilst inflammation does not change the concentration of insulin inside the EV, specific Toll-like receptor-binding microRNA sequences preferentially partition into sEV. Exposure to inflammatory stress engenders drastic increases in the expression of monocyte chemoattractant protein 1 in all EV and of interleukin-27 solely in AB suggesting selective sorting toward EV subspecies. Functional in vitro assays in mouse dendritic cells and macrophages reveal further differences in the aptitude of EV to modulate expression of cytokines and maturation markers. These findings highlight the different quantitative and qualitative imprints of environmental changes in subpopulations of beta EV that may contribute to the spread of inflammation and sustained immune cell recruitment at the inception of the (auto-) immune response.
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Affiliation(s)
| | | | | | - Margot Lavy
- IECM, ONIRIS, INRAE, USC1383, Nantes, France
| | | | - Aurelien Dupont
- MRic, Biosit, UMS3480 CNRS, University of Rennes 1, Rennes, France
| | | | - Laurence Dubreil
- PAnTher, INRAE, Oniris, Université Bretagne Loire, Nantes, France
| | - Mayeul Collot
- Laboratoire de Biophotonique et Pharmacologie, UMR CNRS 7213, Université de Strasbourg, Illkirch, France
| | - Peter Van Endert
- Université Paris Descartes, Paris, France.,INSERM, U1151, Institut Necker-Enfants Malades, Paris, France
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12
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Soulillou JP, Cozzi E, Bach JM. Challenging the Role of Diet-Induced Anti-Neu5Gc Antibodies in Human Pathologies. Front Immunol 2020; 11:834. [PMID: 32655538 PMCID: PMC7325919 DOI: 10.3389/fimmu.2020.00834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022] Open
Affiliation(s)
- Jean-Paul Soulillou
- Centre de Recherche en Transplantation et Immunologie (CRTI), INSERM, Université de Nantes, and Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
| | - Emanuele Cozzi
- Department of Cardiac, Thoracic and Vascular Sciences, Transplant Immunology Unit, Padua University Hospital, Padua, Italy
| | - Jean-Marie Bach
- IECM, Immuno-Endocrinology, USC1383, Oniris, INRAE, Nantes, France
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13
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Abstract
Seventy to ninety percentage of preformed xenoreactive antibodies in human serum bind to the galactose-α(1,3)-galactose Gal epitope, and the creation of Gal knockout (KO) pigs has eliminated hyperacute rejection as a barrier to xenotransplantation. Now other glycan antigens are barriers to move ahead with xenotransplantation, and the N-glycolyl neuraminic acid, Neu5Gc (or Hanganutziu-Deicher antigen), is also a major pig xenoantigen. Humans have anti-Neu5Gc antibodies. Several data indicate a strong immunogenicity of Neu5Gc in humans that may contribute to an important part in antibody-dependent injury to pig xenografts. Pig islets express Neu5Gc, which reacted with diet-derived human antibodies and mice deleted for Neu5Gc reject pancreatic islets from wild-type counterpart. However, Neu5Gc positive heart were not rejected in Neu5Gc KO mice indicating that the role of Neu5Gc-specific antibodies has to be nuanced and depend of the graft situation parameters (organ/tissue, recipient, implication of other glycan antigens). Recently generated Gal/Neu5Gc KO pigs eliminate the expression of Gal and Neu5Gc, and improve the crossmatch of humans with the pig. This review summarizes the current and recent experimental and (pre)clinical data on the Neu5Gc immunogenicity and emphasize of the potential impact of anti-Neu5Gc antibodies in limiting xenotransplantation in humans.
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Affiliation(s)
- Alfred Joseph Tector
- Department of Surgery, University of Alabama at Birmingham School of Medicine, Birmingham, AL, United States
| | - Mathilde Mosser
- Immuno-Endocrinology Unit (IECM), USC1383, Oniris, INRA, Nantes, France
| | - Matthew Tector
- Department of Surgery, University of Alabama at Birmingham School of Medicine, Birmingham, AL, United States
| | - Jean-Marie Bach
- Immuno-Endocrinology Unit (IECM), USC1383, Oniris, INRA, Nantes, France
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14
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Rousse J, Salama A, Leviatan Ben-Arye S, Hruba P, Slatinska J, Evanno G, Duvaux O, Blanchard D, Yu H, Chen X, Bach JM, Padler-Karavani V, Viklicky O, Soulillou JP. Quantitative and qualitative changes in anti-Neu5Gc antibody response following rabbit anti-thymocyte IgG induction in kidney allograft recipients. Eur J Clin Invest 2019; 49:e13069. [PMID: 30620396 DOI: 10.1111/eci.13069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 12/18/2018] [Accepted: 01/06/2019] [Indexed: 01/02/2023]
Abstract
Antibodies of non-human mammals are glycosylated with carbohydrate antigens, such as galactose-α-1-3-galactose (α-Gal) and N-glycolylneuraminic acid (Neu5Gc). These non-human carbohydrate antigens are highly immunogenic in humans due to loss-of-function mutations of the key genes involved in their synthesis. Such immunogenic carbohydrates are expressed on therapeutic polyclonal rabbit anti-human T-cell IgGs (anti-thymocyte globulin; ATG), the most popular induction treatment in allograft recipients. To decipher the quantitative and qualitative response against these antigens in immunosuppressed patients, particularly against Neu5Gc, which may induce endothelial inflammation in both the graft and the host. We report a prospective study of the antibody response against α-Gal and Neu5Gc-containing glycans following rabbit ATG induction compared to controls. We show a drop in the overall levels of anti-Neu5Gc antibodies at 6 and 12 months post-graft compared to the pre-existing levels due to the major early immunosuppression. However, in contrast, in a cross-sectional study there was a highly significant increase in anti-Neu5Gc IgGs levels at 6 months post-graft in the ATG-treated compared to non-treated patients(P = 0.007), with a clear hierarchy favouring anti-Neu5Gc over anti-Gal response. A sialoglycan microarray analysis revealed that the increased anti-Neu5Gc IgG response was still highly diverse against multiple different Neu5Gc-containing glycans. Furthermore, some of the ATG-treated patients developed a shift in their anti-Neu5Gc IgG repertoire compared with the baseline, recognizing different patterns of Neu5Gc-glycans. In contrast to Gal, Neu5Gc epitopes remain antigenic in severely immunosuppressed patients, who also develop an anti-Neu5Gc repertoire shift. The clinical implications of these observations are discussed.
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Affiliation(s)
| | | | - Shani Leviatan Ben-Arye
- Department of Cell Research and Immunology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Petra Hruba
- Transplant Laboratory, Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Janka Slatinska
- Department of Nephrology, Transplant Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | | | | | | | - Hai Yu
- Department of Chemistry, University of California-Davis, Davis, California
| | - Xi Chen
- Department of Chemistry, University of California-Davis, Davis, California
| | - Jean-Marie Bach
- Immuno-Endocrinology Unit, EA4644 University/ONIRIS USC1383 INRA, Pathophysiology Department, ONIRIS-Nantes-Atlantic College of Veterinary Medicine and Food Sciences, Nantes, France
| | - Vered Padler-Karavani
- Department of Cell Research and Immunology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Ondrej Viklicky
- Transplant Laboratory, Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.,Department of Nephrology, Transplant Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Jean-Paul Soulillou
- Centre de Recherche en Transplantation et Immunologie, UMR 1064, INSERM, Université de Nantes, Nantes, France.,Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France
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15
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Hervé J, Terenina E, Haurogné K, Bacou E, Kulikova E, Allard M, Billon Y, Bach JM, Mormède P, Lieubeau B. Effects of divergent selection upon adrenocortical activity on immune traits in pig. BMC Vet Res 2019; 15:71. [PMID: 30832653 PMCID: PMC6398250 DOI: 10.1186/s12917-019-1809-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/19/2019] [Indexed: 01/22/2023] Open
Abstract
Background The sustainability of farming and animal welfare requires the reconsideration of current selection schemes. In particular, implementation of new selection criteria related to animal health and welfare should help to produce more robust animals and to reduce anti-microbial use. The hypothalamo-pituitary-adrenocortical (HPA) axis plays a major role in metabolic regulation and adaptation processes and its activity is strongly influenced by genetic factors. A positive association between HPA axis activity and robustness was recently described. To explore whether selecting pigs upon HPA axis activity could increase their robustness, a divergent selection experiment was carried out in the Large White pig breed. This allowed the generation of low (HPAlo) and high (HPAhi) responders to adrenocorticotropic hormone administration. Results In this study, we compared 23 hematologic and immune parameters of 6-week-old, HPAlo and HPAhi piglets and analysed their response to a low dose of lipopolysaccharide (LPS) two weeks later. At six weeks of age, HPAhi piglets displayed greater red blood cell and leucocyte number including CD8α+ γδ cells, cytotoxic T lymphocytes, naive T helper (Th) cells and B lymphocytes as compared to HPAlo individuals. The ability of blood cells to secrete TNFα in response to LPS ex vivo was higher for HPAhi pigs. At week eight, the inflammatory response to the LPS in vivo challenge was poorly affected by the HPA axis activity. Conclusions Divergent selection upon HPA axis activity modulated hematologic and immune parameters in 6-week-old pigs, which may confer an advantage to HPAhi pigs at weaning. However, HPAlo and HPAhi piglets did not exhibit major differences in the parameters analysed two weeks later, i. e. in 8-week-old pigs. In conclusion, chronic exposure to high cortisol levels in HPAhi pigs does not negatively impact immunity. Electronic supplementary material The online version of this article (10.1186/s12917-019-1809-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Julie Hervé
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France.
| | - Elena Terenina
- GenPhySE, Université de Toulouse, INRA, INPT, ENVT, F-31326, Castanet-Tolosan, France.
| | - Karine Haurogné
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France
| | - Elodie Bacou
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France
| | - Elizaveta Kulikova
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russian Federation, 630090
| | - Marie Allard
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France
| | - Yvon Billon
- GenESI, INRA, Le Magneraud, F-17700, Saint-Pierre-d'Amilly, France
| | - Jean-Marie Bach
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France
| | - Pierre Mormède
- GenPhySE, Université de Toulouse, INRA, INPT, ENVT, F-31326, Castanet-Tolosan, France
| | - Blandine Lieubeau
- IECM, INRA, Oniris, La Chantrerie, CS 40706, F-44307, Nantes Cedex 3, France
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16
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Théry C, Witwer KW, Aikawa E, Alcaraz MJ, Anderson JD, Andriantsitohaina R, Antoniou A, Arab T, Archer F, Atkin-Smith GK, Ayre DC, Bach JM, Bachurski D, Baharvand H, Balaj L, Baldacchino S, Bauer NN, Baxter AA, Bebawy M, Beckham C, Bedina Zavec A, Benmoussa A, Berardi AC, Bergese P, Bielska E, Blenkiron C, Bobis-Wozowicz S, Boilard E, Boireau W, Bongiovanni A, Borràs FE, Bosch S, Boulanger CM, Breakefield X, Breglio AM, Brennan MÁ, Brigstock DR, Brisson A, Broekman MLD, Bromberg JF, Bryl-Górecka P, Buch S, Buck AH, Burger D, Busatto S, Buschmann D, Bussolati B, Buzás EI, Byrd JB, Camussi G, Carter DRF, Caruso S, Chamley LW, Chang YT, Chen C, Chen S, Cheng L, Chin AR, Clayton A, Clerici SP, Cocks A, Cocucci E, Coffey RJ, Cordeiro-da-Silva A, Couch Y, Coumans FAW, Coyle B, Crescitelli R, Criado MF, D’Souza-Schorey C, Das S, Datta Chaudhuri A, de Candia P, De Santana EF, De Wever O, del Portillo HA, Demaret T, Deville S, Devitt A, Dhondt B, Di Vizio D, Dieterich LC, Dolo V, Dominguez Rubio AP, Dominici M, Dourado MR, Driedonks TAP, Duarte FV, Duncan HM, Eichenberger RM, Ekström K, EL Andaloussi S, Elie-Caille C, Erdbrügger U, Falcón-Pérez JM, Fatima F, Fish JE, Flores-Bellver M, Försönits A, Frelet-Barrand A, Fricke F, Fuhrmann G, Gabrielsson S, Gámez-Valero A, Gardiner C, Gärtner K, Gaudin R, Gho YS, Giebel B, Gilbert C, Gimona M, Giusti I, Goberdhan DCI, Görgens A, Gorski SM, Greening DW, Gross JC, Gualerzi A, Gupta GN, Gustafson D, Handberg A, Haraszti RA, Harrison P, Hegyesi H, Hendrix A, Hill AF, Hochberg FH, Hoffmann KF, Holder B, Holthofer H, Hosseinkhani B, Hu G, Huang Y, Huber V, Hunt S, Ibrahim AGE, Ikezu T, Inal JM, Isin M, Ivanova A, Jackson HK, Jacobsen S, Jay SM, Jayachandran M, Jenster G, Jiang L, Johnson SM, Jones JC, Jong A, Jovanovic-Talisman T, Jung S, Kalluri R, Kano SI, Kaur S, Kawamura Y, Keller ET, Khamari D, Khomyakova E, Khvorova A, Kierulf P, Kim KP, Kislinger T, Klingeborn M, Klinke DJ, Kornek M, Kosanović MM, Kovács ÁF, Krämer-Albers EM, Krasemann S, Krause M, Kurochkin IV, Kusuma GD, Kuypers S, Laitinen S, Langevin SM, Languino LR, Lannigan J, Lässer C, Laurent LC, Lavieu G, Lázaro-Ibáñez E, Le Lay S, Lee MS, Lee YXF, Lemos DS, Lenassi M, Leszczynska A, Li ITS, Liao K, Libregts SF, Ligeti E, Lim R, Lim SK, Linē A, Linnemannstöns K, Llorente A, Lombard CA, Lorenowicz MJ, Lörincz ÁM, Lötvall J, Lovett J, Lowry MC, Loyer X, Lu Q, Lukomska B, Lunavat TR, Maas SLN, Malhi H, Marcilla A, Mariani J, Mariscal J, Martens-Uzunova ES, Martin-Jaular L, Martinez MC, Martins VR, Mathieu M, Mathivanan S, Maugeri M, McGinnis LK, McVey MJ, Meckes DG, Meehan KL, Mertens I, Minciacchi VR, Möller A, Møller Jørgensen M, Morales-Kastresana A, Morhayim J, Mullier F, Muraca M, Musante L, Mussack V, Muth DC, Myburgh KH, Najrana T, Nawaz M, Nazarenko I, Nejsum P, Neri C, Neri T, Nieuwland R, Nimrichter L, Nolan JP, Nolte-’t Hoen ENM, Noren Hooten N, O’Driscoll L, O’Grady T, O’Loghlen A, Ochiya T, Olivier M, Ortiz A, Ortiz LA, Osteikoetxea X, Østergaard O, Ostrowski M, Park J, Pegtel DM, Peinado H, Perut F, Pfaffl MW, Phinney DG, Pieters BCH, Pink RC, Pisetsky DS, Pogge von Strandmann E, Polakovicova I, Poon IKH, Powell BH, Prada I, Pulliam L, Quesenberry P, Radeghieri A, Raffai RL, Raimondo S, Rak J, Ramirez MI, Raposo G, Rayyan MS, Regev-Rudzki N, Ricklefs FL, Robbins PD, Roberts DD, Rodrigues SC, Rohde E, Rome S, Rouschop KMA, Rughetti A, Russell AE, Saá P, Sahoo S, Salas-Huenuleo E, Sánchez C, Saugstad JA, Saul MJ, Schiffelers RM, Schneider R, Schøyen TH, Scott A, Shahaj E, Sharma S, Shatnyeva O, Shekari F, Shelke GV, Shetty AK, Shiba K, Siljander PRM, Silva AM, Skowronek A, Snyder OL, Soares RP, Sódar BW, Soekmadji C, Sotillo J, Stahl PD, Stoorvogel W, Stott SL, Strasser EF, Swift S, Tahara H, Tewari M, Timms K, Tiwari S, Tixeira R, Tkach M, Toh WS, Tomasini R, Torrecilhas AC, Tosar JP, Toxavidis V, Urbanelli L, Vader P, van Balkom BWM, van der Grein SG, Van Deun J, van Herwijnen MJC, Van Keuren-Jensen K, van Niel G, van Royen ME, van Wijnen AJ, Vasconcelos MH, Vechetti IJ, Veit TD, Vella LJ, Velot É, Verweij FJ, Vestad B, Viñas JL, Visnovitz T, Vukman KV, Wahlgren J, Watson DC, Wauben MHM, Weaver A, Webber JP, Weber V, Wehman AM, Weiss DJ, Welsh JA, Wendt S, Wheelock AM, Wiener Z, Witte L, Wolfram J, Xagorari A, Xander P, Xu J, Yan X, Yáñez-Mó M, Yin H, Yuana Y, Zappulli V, Zarubova J, Žėkas V, Zhang JY, Zhao Z, Zheng L, Zheutlin AR, Zickler AM, Zimmermann P, Zivkovic AM, Zocco D, Zuba-Surma EK. Minimal information for studies of extracellular vesicles 2018 (MISEV2018): a position statement of the International Society for Extracellular Vesicles and update of the MISEV2014 guidelines. J Extracell Vesicles 2018; 7:1535750. [PMID: 30637094 PMCID: PMC6322352 DOI: 10.1080/20013078.2018.1535750] [Citation(s) in RCA: 6197] [Impact Index Per Article: 1032.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 09/25/2018] [Indexed: 11/04/2022] Open
Abstract
The last decade has seen a sharp increase in the number of scientific publications describing physiological and pathological functions of extracellular vesicles (EVs), a collective term covering various subtypes of cell-released, membranous structures, called exosomes, microvesicles, microparticles, ectosomes, oncosomes, apoptotic bodies, and many other names. However, specific issues arise when working with these entities, whose size and amount often make them difficult to obtain as relatively pure preparations, and to characterize properly. The International Society for Extracellular Vesicles (ISEV) proposed Minimal Information for Studies of Extracellular Vesicles ("MISEV") guidelines for the field in 2014. We now update these "MISEV2014" guidelines based on evolution of the collective knowledge in the last four years. An important point to consider is that ascribing a specific function to EVs in general, or to subtypes of EVs, requires reporting of specific information beyond mere description of function in a crude, potentially contaminated, and heterogeneous preparation. For example, claims that exosomes are endowed with exquisite and specific activities remain difficult to support experimentally, given our still limited knowledge of their specific molecular machineries of biogenesis and release, as compared with other biophysically similar EVs. The MISEV2018 guidelines include tables and outlines of suggested protocols and steps to follow to document specific EV-associated functional activities. Finally, a checklist is provided with summaries of key points.
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Affiliation(s)
- Clotilde Théry
- Institut Curie, INSERM U932, PSL Research University, Paris, France
| | - Kenneth W Witwer
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
- The Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD, USA
| | - Elena Aikawa
- Brigham and Women’s Hospital, Center for Interdisciplinary Cardiovascular Sciences, Boston, MA, USA
- Harvard Medical School, Cardiovascular Medicine, Boston, MA, USA
| | - Maria Jose Alcaraz
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Polytechnic University of Valencia, Valencia, Spain
| | | | | | - Anna Antoniou
- German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University Hospital Bonn (UKB), Bonn, Germany
| | - Tanina Arab
- Université de Lille, INSERM, U-1192, Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse - PRISM, Lille, France
| | - Fabienne Archer
- University of Lyon, INRA, EPHE, UMR754 Viral Infections and Comparative Pathology, Lyon, France
| | - Georgia K Atkin-Smith
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - D Craig Ayre
- Atlantic Cancer Research Institute, Moncton, Canada
- Mount Allison University, Department of Chemistry and Biochemistry, Sackville, Canada
| | - Jean-Marie Bach
- Université Bretagne Loire, Oniris, INRA, IECM, Nantes, France
| | - Daniel Bachurski
- University of Cologne, Department of Internal Medicine I, Cologne, Germany
| | - Hossein Baharvand
- Royan Institute for Stem Cell Biology and Technology, ACECR, Cell Science Research Center, Department of Stem Cells and Developmental Biology, Tehran, Iran
- University of Science and Culture, ACECR, Department of Developmental Biology, Tehran, Iran
| | - Leonora Balaj
- Massachusetts General Hospital, Department of Neurosurgery, Boston, MA, USA
| | | | - Natalie N Bauer
- University of South Alabama, Department of Pharmacology, Center for Lung Biology, Mobile, AL, USA
| | - Amy A Baxter
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Mary Bebawy
- University of Technology Sydney, Discipline of Pharmacy, Graduate School of Health, Sydney, Australia
| | | | - Apolonija Bedina Zavec
- National Institute of Chemistry, Department of Molecular Biology and Nanobiotechnology, Ljubljana, Slovenia
| | - Abderrahim Benmoussa
- Université Laval, Centre de Recherche du CHU de Québec, Department of Infectious Diseases and Immunity, Quebec City, Canada
| | | | - Paolo Bergese
- CSGI - Research Center for Colloids and Nanoscience, Florence, Italy
- INSTM - National Interuniversity Consortium of Materials Science and Technology, Florence, Italy
- University of Brescia, Department of Molecular and Translational Medicine, Brescia, Italy
| | - Ewa Bielska
- University of Birmingham, Institute of Microbiology and Infection, Birmingham, UK
| | | | - Sylwia Bobis-Wozowicz
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Kraków, Poland
| | - Eric Boilard
- Université Laval, Centre de Recherche du CHU de Québec, Department of Infectious Diseases and Immunity, Quebec City, Canada
| | - Wilfrid Boireau
- FEMTO-ST Institute, UBFC, CNRS, ENSMM, UTBM, Besançon, France
| | - Antonella Bongiovanni
- Institute of Biomedicine and Molecular Immunology (IBIM), National Research Council (CNR) of Italy, Palermo, Italy
| | - Francesc E Borràs
- Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, REMAR-IVECAT Group, Badalona, Spain
- Germans Trias i Pujol University Hospital, Nephrology Service, Badalona, Spain
- Universitat Autònoma de Barcelona, Department of Cell Biology, Physiology & Immunology, Barcelona, Spain
| | - Steffi Bosch
- Université Bretagne Loire, Oniris, INRA, IECM, Nantes, France
| | - Chantal M Boulanger
- INSERM UMR-S 970, Paris Cardiovascular Research Center, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Xandra Breakefield
- Massachusetts General Hospital and Neuroscience Program, Harvard Medical School, Department of Neurology and Radiology, Boston, MA, USA
| | - Andrew M Breglio
- Icahn School of Medicine at Mount Sinai, New York City, NY, USA
- National Institutes of Health, National Institute on Deafness and Other Communication Disorders, Bethesda, MD, USA
| | - Meadhbh Á Brennan
- Harvard University, School of Engineering and Applied Sciences, Cambridge, MA, USA
- Massachusetts General Hospital, Harvard Medical School, Department of Neurology, Boston, MA, USA
- Université de Nantes, INSERM UMR 1238, Bone Sarcoma and Remodeling of Calcified Tissues, PhyOS, Nantes, France
| | - David R Brigstock
- Nationwide Children’s Hospital, Columbus, OH, USA
- The Ohio State University, Columbus, OH, USA
| | - Alain Brisson
- UMR-CBMN, CNRS-Université de Bordeaux, Bordeaux, France
| | - Marike LD Broekman
- Haaglanden Medical Center, Department of Neurosurgery, The Hague, The Netherlands
- Leiden University Medical Center, Department of Neurosurgery, Leiden, The Netherlands
- Massachusetts General Hospital, Department of Neurology, Boston, MA, USA
| | - Jacqueline F Bromberg
- Memorial Sloan Kettering Cancer Center, Department of Medicine, New York City, NY, USA
- Weill Cornell Medicine, Department of Medicine, New York City, NY, USA
| | | | - Shilpa Buch
- University of Nebraska Medical Center, Department of Pharmacology and Experimental Neuroscience, Omaha, NE, USA
| | - Amy H Buck
- University of Edinburgh, Institute of Immunology & Infection Research, Edinburgh, UK
| | - Dylan Burger
- Kidney Research Centre, Ottawa, Canada
- Ottawa Hospital Research Institute, Ottawa, Canada
- University of Ottawa, Ottawa, Canada
| | - Sara Busatto
- Mayo Clinic, Department of Transplantation, Jacksonville, FL, USA
- University of Brescia, Department of Molecular and Translational Medicine, Brescia, Italy
| | - Dominik Buschmann
- Technical University of Munich, TUM School of Life Sciences Weihenstephan, Division of Animal Physiology and Immunology, Freising, Germany
| | - Benedetta Bussolati
- University of Torino, Department of Molecular Biotechnology and Health Sciences, Torino, Italy
| | - Edit I Buzás
- MTA-SE Immuno-Proteogenomics Research Groups, Budapest, Hungary
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - James Bryan Byrd
- University of Michigan, Department of Medicine, Ann Arbor, MI, USA
| | - Giovanni Camussi
- University of Torino, Department of Medical Sciences, Torino, Italy
| | - David RF Carter
- Oxford Brookes University, Department of Biological and Medical Sciences, Oxford, UK
| | - Sarah Caruso
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Lawrence W Chamley
- University of Auckland, Department of Obstetrics and Gynaecology, Auckland, New Zealand
| | - Yu-Ting Chang
- National Taiwan University Hospital, Department of Internal Medicine, Taipei, Taiwan
| | - Chihchen Chen
- National Tsing Hua University, Department of Power Mechanical Engineering, Hsinchu, Taiwan
- National Tsing Hua University, Institute of Nanoengineering and Microsystems, Hsinchu, Taiwan
| | - Shuai Chen
- Leibniz Institute for Farm Animal Biology (FBN), Institute of Reproductive Biology, Dummerstorf, Germany
| | - Lesley Cheng
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | | | - Aled Clayton
- Cardiff University, School of Medicine, Cardiff, UK
| | | | - Alex Cocks
- Cardiff University, School of Medicine, Cardiff, UK
| | - Emanuele Cocucci
- The Ohio State University, College of Pharmacy, Division of Pharmaceutics and Pharmaceutical Chemistry, Columbus, OH, USA
- The Ohio State University, Comprehensive Cancer Center, Columbus, OH, USA
| | - Robert J Coffey
- Vanderbilt University Medical Center, Epithelial Biology Center, Department of Medicine, Nashville, TN, USA
| | | | - Yvonne Couch
- University of Oxford, Radcliffe Department of Medicine, Acute Stroke Programme - Investigative Medicine, Oxford, UK
| | - Frank AW Coumans
- Academic Medical Centre of the University of Amsterdam, Department of Clinical Chemistry and Vesicle Observation Centre, Amsterdam, The Netherlands
| | - Beth Coyle
- The University of Nottingham, School of Medicine, Children’s Brain Tumour Research Centre, Nottingham, UK
| | - Rossella Crescitelli
- University of Gothenburg, Institute of Medicine at Sahlgrenska Academy, Krefting Research Centre, Gothenburg, Sweden
| | | | | | - Saumya Das
- Massachusetts General Hospital, Boston, MA, USA
| | - Amrita Datta Chaudhuri
- The Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD, USA
| | | | - Eliezer F De Santana
- The Sociedade Beneficente Israelita Brasileira Albert Einstein, São Paulo, Brazil
| | - Olivier De Wever
- Cancer Research Institute Ghent, Ghent, Belgium
- Ghent University, Department of Radiation Oncology and Experimental Cancer Research, Laboratory of Experimental Cancer Research, Ghent, Belgium
| | - Hernando A del Portillo
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
- Institut d’Investigació Germans Trias i Pujol (IGTP), PVREX group, Badalona, Spain
- ISGlobal, Hospital Clínic - Universitat de Barcelona, PVREX Group, Barcelona, Spain
| | - Tanguy Demaret
- Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Laboratory of Pediatric Hepatology and Cell Therapy, Brussels, Belgium
| | - Sarah Deville
- Universiteit Hasselt, Diepenbeek, Belgium
- Vlaamse Instelling voor Technologisch Onderzoek (VITO), Mol, Belgium
| | - Andrew Devitt
- Aston University, School of Life & Health Sciences, Birmingham, UK
| | - Bert Dhondt
- Cancer Research Institute Ghent, Ghent, Belgium
- Ghent University Hospital, Department of Urology, Ghent, Belgium
- Ghent University, Department of Radiation Oncology and Experimental Cancer Research, Laboratory of Experimental Cancer Research, Ghent, Belgium
| | | | | | - Vincenza Dolo
- University of L’Aquila, Department of Life, Health and Environmental Sciences, L’Aquila, Italy
| | - Ana Paula Dominguez Rubio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
| | - Massimo Dominici
- TPM of Mirandola, Mirandola, Italy
- University of Modena and Reggio Emilia, Division of Oncology, Modena, Italy
| | - Mauricio R Dourado
- University of Campinas, Piracicaba Dental School, Department of Oral Diagnosis, Piracicaba, Brazil
- University of Oulu, Faculty of Medicine, Cancer and Translational Medicine Research Unit, Oulu, Finland
| | - Tom AP Driedonks
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | | | - Heather M Duncan
- McGill University, Division of Experimental Medicine, Montreal, Canada
- McGill University, The Research Institute of the McGill University Health Centre, Child Health and Human Development Program, Montreal, Canada
| | - Ramon M Eichenberger
- James Cook University, Australian Institute of Tropical Health and Medicine, Centre for Biodiscovery and Molecular Development of Therapeutics, Cairns, Australia
| | - Karin Ekström
- University of Gothenburg, Institute of Clinical Sciences at Sahlgrenska Academy, Department of Biomaterials, Gothenburg, Sweden
| | - Samir EL Andaloussi
- Evox Therapeutics Limited, Oxford, UK
- Karolinska Institute, Stockholm, Sweden
| | | | - Uta Erdbrügger
- University of Virginia Health System, Department of Medicine, Division of Nephrology, Charlottesville, VA, USA
| | - Juan M Falcón-Pérez
- CIC bioGUNE, CIBERehd, Exosomes Laboratory & Metabolomics Platform, Derio, Spain
- IKERBASQUE Research Science Foundation, Bilbao, Spain
| | - Farah Fatima
- University of São Paulo, Ribeirão Preto Medical School, Department of Pathology and Forensic Medicine, Ribeirão Preto, Brazil
| | - Jason E Fish
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada
- University of Toronto, Department of Laboratory Medicine and Pathobiology, Toronto, Canada
| | - Miguel Flores-Bellver
- University of Colorado, School of Medicine, Department of Ophthalmology, Cell Sight-Ocular Stem Cell and Regeneration Program, Aurora, CO, USA
| | - András Försönits
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | | | - Fabia Fricke
- German Cancer Research Center (DKFZ), Clinical Cooperation Unit Applied Tumor Biology, Heidelberg, Germany
- University Hospital Heidelberg, Institute of Pathology, Applied Tumor Biology, Heidelberg, Germany
| | - Gregor Fuhrmann
- Helmholtz-Centre for Infection Research, Braunschweig, Germany
- Helmholtz-Institute for Pharmaceutical Research Saarland, Saarbrücken, Germany
- Saarland University, Saarbrücken, Germany
| | - Susanne Gabrielsson
- Karolinska Institute, Department of Medicine Solna, Division for Immunology and Allergy, Stockholm, Sweden
| | - Ana Gámez-Valero
- Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, REMAR-IVECAT Group, Badalona, Spain
- Universitat Autònoma de Barcelona, Hospital Universitari and Health Sciences Research Institute Germans Trias i Pujol, Department of Pathology, Barcelona, Spain
| | | | - Kathrin Gärtner
- Helmholtz Center Munich German Research Center for Environmental Health, Research Unit Gene Vectors, Munich, Germany
| | - Raphael Gaudin
- INSERM U1110, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Yong Song Gho
- POSTECH (Pohang University of Science and Technology), Department of Life Sciences, Pohang, South Korea
| | - Bernd Giebel
- University Hospital Essen, University Duisburg-Essen, Institute for Transfusion Medicine, Essen, Germany
| | - Caroline Gilbert
- Université Laval, Centre de Recherche du CHU de Québec, Department of Infectious Diseases and Immunity, Quebec City, Canada
| | - Mario Gimona
- Paracelsus Medical University, GMP Unit, Salzburg, Austria
| | - Ilaria Giusti
- University of L’Aquila, Department of Life, Health and Environmental Sciences, L’Aquila, Italy
| | - Deborah CI Goberdhan
- University of Oxford, Department of Physiology, Anatomy and Genetics, Oxford, UK
| | - André Görgens
- Evox Therapeutics Limited, Oxford, UK
- Karolinska Institute, Clinical Research Center, Department of Laboratory Medicine, Stockholm, Sweden
- University Hospital Essen, University Duisburg-Essen, Institute for Transfusion Medicine, Essen, Germany
| | - Sharon M Gorski
- BC Cancer, Canada’s Michael Smith Genome Sciences Centre, Vancouver, Canada
- Simon Fraser University, Department of Molecular Biology and Biochemistry, Burnaby, Canada
| | - David W Greening
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Julia Christina Gross
- University Medical Center Göttingen, Developmental Biochemistry, Göttingen, Germany
- University Medical Center Göttingen, Hematology and Oncology, Göttingen, Germany
| | - Alice Gualerzi
- IRCCS Fondazione Don Carlo Gnocchi, Laboratory of Nanomedicine and Clinical Biophotonics (LABION), Milan, Italy
| | - Gopal N Gupta
- Loyola University Chicago, Department of Urology, Maywood, IL, USA
| | - Dakota Gustafson
- University of Toronto, Department of Laboratory Medicine and Pathobiology, Toronto, Canada
| | - Aase Handberg
- Aalborg University Hospital, Department of Clinical Biochemistry, Aalborg, Denmark
- Aalborg University, Clinical Institute, Aalborg, Denmark
| | - Reka A Haraszti
- University of Massachusetts Medical School, RNA Therapeutics Institute, Worcester, MA, USA
| | | | - Hargita Hegyesi
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - An Hendrix
- Cancer Research Institute Ghent, Ghent, Belgium
- Ghent University, Department of Radiation Oncology and Experimental Cancer Research, Laboratory of Experimental Cancer Research, Ghent, Belgium
| | - Andrew F Hill
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Fred H Hochberg
- Scintillon Institute, La Jolla, CA, USA
- University of California, San Diego, Department of Neurosurgery, La Jolla, CA, USA
| | - Karl F Hoffmann
- Aberystwyth University, Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth, United Kingdom
| | - Beth Holder
- Imperial College London, London, UK
- MRC The Gambia, Fajara, The Gambia
| | | | - Baharak Hosseinkhani
- Hasselt University, Biomedical Research Institute (BIOMED), Department of Medicine and Life Sciences, Hasselt, Belgium
| | - Guoku Hu
- University of Nebraska Medical Center, Department of Pharmacology and Experimental Neuroscience, Omaha, NE, USA
| | - Yiyao Huang
- Nanfang Hospital, Southern Medical University, Department of Clinical Laboratory Medicine, Guangzhou, China
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | - Veronica Huber
- Fondazione IRCCS Istituto Nazionale dei Tumori, Unit of Immunotherapy of Human Tumors, Milan, Italy
| | | | | | - Tsuneya Ikezu
- Boston University School of Medicine, Boston, MA, USA
| | - Jameel M Inal
- University of Hertfordshire, School of Life and Medical Sciences, Biosciences Research Group, Hatfield, UK
| | - Mustafa Isin
- Istanbul University Oncology Institute, Basic Oncology Department, Istanbul, Turkey
| | - Alena Ivanova
- German Cancer Research Center (DKFZ), Division Signaling and Functional Genomics, Heidelberg, Germany
| | - Hannah K Jackson
- The University of Nottingham, School of Medicine, Children’s Brain Tumour Research Centre, Nottingham, UK
| | - Soren Jacobsen
- Copenhagen Lupus and Vasculitis Clinic, Section 4242 - Rigshospitalet, Copenhagen, Denmark
- University of Copenhagen, Institute of Clinical Medicine, Copenhagen, Denmark
| | - Steven M Jay
- University of Maryland, Fischell Department of Bioengineering, College Park, MD, USA
| | - Muthuvel Jayachandran
- Mayo Clinic, College of Medicine, Department of Physiology and Biomedical Engineering, Rochester, MN, USA
| | | | - Lanzhou Jiang
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Suzanne M Johnson
- University of Manchester, Division of Cancer Sciences, Manchester Cancer Research Centre, Manchester, UK
| | - Jennifer C Jones
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, MD, USA
| | - Ambrose Jong
- Children’s Hospital of Los Angeles, Los Angeles, CA, USA
- University of Southern California Keck School of Medicine, Los Angeles, CA, USA
| | - Tijana Jovanovic-Talisman
- City of Hope Comprehensive Cancer Center, Beckman Research Institute, Department of Molecular Medicine, Duarte, CA, USA
| | - Stephanie Jung
- German Research Center for Environmental Health, Institute for Virology, Munich, Germany
| | - Raghu Kalluri
- University of Texas MD Anderson Cancer Center, Department of Cancer Biology, Metastasis Research Center, Houston, TX, USA
| | - Shin-ichi Kano
- The Johns Hopkins University School of Medicine, Department of Psychiatry and Behavioral Sciences, Baltimore, MD, USA
| | - Sukhbir Kaur
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Laboratory of Pathology, Bethesda, MD, USA
| | - Yumi Kawamura
- National Cancer Center Research Institute, Tokyo, Japan
- University of Tsukuba, Tsukuba, Japan
| | - Evan T Keller
- University of Michigan, Biointerfaces Institute, Ann Arbor, MI, USA
- University of Michigan, Department of Urology, Ann Arbor, MI, USA
| | - Delaram Khamari
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - Elena Khomyakova
- École normale supérieure, Paris, France
- Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia
| | - Anastasia Khvorova
- University of Massachusetts Medical School, RNA Therapeutics Institute, Worcester, MA, USA
| | - Peter Kierulf
- Oslo University Hospital, Department of Medical Biochemistry, Blood Cell Research Group, Oslo, Norway
| | - Kwang Pyo Kim
- Kyung Hee University, Department of Applied Chemistry, Yongin, Korea
| | - Thomas Kislinger
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
- University of Toronto, Department of Medical Biophysics, Toronto, Canada
| | | | - David J Klinke
- West Virginia University, Department of Chemical and Biomedical Engineering and WVU Cancer Institute, Morgantown, WV, USA
- West Virginia University, Department of Microbiology Immunology and Cell Biology, Morgantown, WV, USA
| | - Miroslaw Kornek
- German Armed Forces Central Hospital, Department of General, Visceral and Thoracic Surgery, Koblenz, Germany
- Saarland University Medical Center, Department of Medicine II, Homburg, Germany
| | - Maja M Kosanović
- University of Belgrade, Institute for the Application of Nuclear Energy, INEP, Belgrade, Serbia
| | - Árpád Ferenc Kovács
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | | | - Susanne Krasemann
- University Medical Center Hamburg-Eppendorf, Institute of Neuropathology, Hamburg, Germany
| | - Mirja Krause
- Hudson Institute of Medical Research, Melbourne, Australia
| | | | - Gina D Kusuma
- Hudson Institute of Medical Research, Melbourne, Australia
- Monash University, Melbourne, Australia
| | - Sören Kuypers
- Hasselt University, Biomedical Research Institute (BIOMED), Hasselt, Belgium
| | - Saara Laitinen
- Finnish Red Cross Blood Service, Research and Development, Helsinki, Finland
| | - Scott M Langevin
- Cincinnati Cancer Center, Cincinnati, OH, USA
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Lucia R Languino
- Thomas Jefferson University, Sidney Kimmel Medical School, Department of Cancer Biology, Philadelphia, PA, USA
| | - Joanne Lannigan
- University of Virginia, Flow Cytometry Core, School of Medicine, Charlottesville, VA, USA
| | - Cecilia Lässer
- University of Gothenburg, Institute of Medicine at Sahlgrenska Academy, Krefting Research Centre, Gothenburg, Sweden
| | - Louise C Laurent
- University of California, San Diego, Department of Obstetrics, Gynecology, and Reproductive Sciences, La Jolla, CA, USA
| | - Gregory Lavieu
- Institut Curie, INSERM U932, PSL Research University, Paris, France
| | | | - Soazig Le Lay
- INSERM U1063, Université d’Angers, CHU d’Angers, Angers, France
| | - Myung-Shin Lee
- Eulji University, School of Medicine, Daejeon, South Korea
| | | | - Debora S Lemos
- Federal University of Paraná, Department of Genetics, Human Molecular Genetics Laboratory, Curitiba, Brazil
| | - Metka Lenassi
- University of Ljubljana, Faculty of Medicine, Institute of Biochemistry, Ljubljana, Slovenia
| | | | - Isaac TS Li
- University of British Columbia Okanagan, Kelowna, Canada
| | - Ke Liao
- University of Nebraska Medical Center, Department of Pharmacology and Experimental Neuroscience, Omaha, NE, USA
| | - Sten F Libregts
- University of Cambridge School of Clinical Medicine, Addenbrooke’s Hospital, Department of Medicine, Cambridge NIHR BRC Cell Phenotyping Hub, Cambridge, UK
| | - Erzsebet Ligeti
- Semmelweis University, Department of Physiology, Budapest, Hungary
| | - Rebecca Lim
- Hudson Institute of Medical Research, Melbourne, Australia
- Monash University, Melbourne, Australia
| | - Sai Kiang Lim
- Institute of Medical Biology (IMB), Agency for Science and Technology (A*STAR), Singapore
| | - Aija Linē
- Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Karen Linnemannstöns
- University Medical Center Göttingen, Developmental Biochemistry, Göttingen, Germany
- University Medical Center Göttingen, Hematology and Oncology, Göttingen, Germany
| | - Alicia Llorente
- Oslo University Hospital-The Norwegian Radium Hospital, Institute for Cancer Research, Department of Molecular Cell Biology, Oslo, Norway
| | - Catherine A Lombard
- Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique (IREC), Laboratory of Pediatric Hepatology and Cell Therapy, Brussels, Belgium
| | - Magdalena J Lorenowicz
- Utrecht University, University Medical Center Utrecht, Center for Molecular Medicine & Regenerative Medicine Center, Utrecht, The Netherlands
| | - Ákos M Lörincz
- Semmelweis University, Department of Physiology, Budapest, Hungary
| | - Jan Lötvall
- University of Gothenburg, Institute of Medicine at Sahlgrenska Academy, Krefting Research Centre, Gothenburg, Sweden
| | - Jason Lovett
- Stellenbosch University, Department of Physiological Sciences, Stellenbosch, South Africa
| | - Michelle C Lowry
- Trinity College Dublin, School of Pharmacy and Pharmaceutical Sciences, Panoz Institute & Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Xavier Loyer
- INSERM UMR-S 970, Paris Cardiovascular Research Center, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Quan Lu
- Harvard University, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Barbara Lukomska
- Mossakowski Medical Research Centre, NeuroRepair Department, Warsaw, Poland
| | - Taral R Lunavat
- K.G. Jebsen Brain Tumor Research Centre, Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Sybren LN Maas
- Utrecht University, University Medical Center Utrecht, Department of Neurosurgery, Brain Center Rudolf Magnus, Institute of Neurosciences, Utrecht, The Netherlands
- Utrecht University, University Medical Center Utrecht, Department of Pathology, Utrecht, The Netherlands
| | | | - Antonio Marcilla
- Universitat de València, Departament de Farmàcia i Tecnologia Farmacèutica i Parasitologia, Àrea de Parasitologia, Valencia, Spain
- Universitat de València, Health Research Institute La Fe, Joint Research Unit on Endocrinology, Nutrition and Clinical Dietetics, Valencia, Spain
| | - Jacopo Mariani
- Università degli Studi di Milano, Department of Clinical Sciences and Community Health, EPIGET LAB, Milan, Italy
| | | | | | | | | | | | - Mathilde Mathieu
- Institut Curie, INSERM U932, PSL Research University, Paris, France
| | - Suresh Mathivanan
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Marco Maugeri
- University of Gothenburg, Sahlgrenska Academy, Department of Rheumatology and Inflammation Research, Gothenburg, Sweden
| | | | - Mark J McVey
- SickKids Hospital, Department of Anesthesia and Pain Medicine, Toronto, Canada
- University of Toronto, Department of Anesthesia, Toronto, Canada
| | - David G Meckes
- Florida State University College of Medicine, Department of Biomedical Sciences, Tallahassee, FL, USA
| | - Katie L Meehan
- The School of Biomedical Sciences, University of Western Australia, Perth, Australia
| | - Inge Mertens
- University of Antwerp, Centre for Proteomics, Antwerp, Belgium
- Vlaamse Instelling voor Technologisch Onderzoek (VITO), Mol, Belgium
| | - Valentina R Minciacchi
- Georg-Speyer-Haus Institute for Tumor Biology and Experimental Therapy, Frankfurt, Germany
| | - Andreas Möller
- QIMR Berghofer Medical Research Institute, Herston, Australia
| | - Malene Møller Jørgensen
- Aalborg University Hospital, Department of Clinical Immunology, Aalborg, Denmark
- EVSEARCH.DK, Denmark
| | - Aizea Morales-Kastresana
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, MD, USA
| | | | - François Mullier
- Namur Thrombosis and Hemostasis Center (NTHC), NARILIS, Namur, Belgium
- Université Catholique de Louvain, CHU UCL Namur, Hematology-Hemostasis Laboratory, Yvoir, Belgium
| | - Maurizio Muraca
- University of Padova, Department of Women’s and Children’s Health, Padova, Italy
| | - Luca Musante
- University of Virginia Health System, Department of Medicine, Division of Nephrology, Charlottesville, VA, USA
| | - Veronika Mussack
- Technical University of Munich, TUM School of Life Sciences Weihenstephan, Division of Animal Physiology and Immunology, Freising, Germany
| | - Dillon C Muth
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | - Kathryn H Myburgh
- Stellenbosch University, Department of Physiological Sciences, Stellenbosch, South Africa
| | - Tanbir Najrana
- Brown University, Women and Infants Hospital, Providence, RI, USA
| | - Muhammad Nawaz
- University of Gothenburg, Sahlgrenska Academy, Department of Rheumatology and Inflammation Research, Gothenburg, Sweden
| | - Irina Nazarenko
- German Cancer Consortium (DKTK), Partner Site Freiburg and German Cancer Research Center (DKFZ), Heidelberg, Germany
- Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Institute for Infection Prevention and Hospital Epidemiology, Freiburg, Germany
| | - Peter Nejsum
- Aarhus University, Department of Clinical Medicine, Aarhus, Denmark
| | - Christian Neri
- Sorbonne Université, Centre National de la Recherche Scientifique, Research Unit Biology of Adaptation and Aging (B2A), Team Compensation in Neurodegenerative and Aging (Brain-C), Paris, France
| | - Tommaso Neri
- University of Pisa, Centro Dipartimentale di Biologia Cellulare Cardio-Respiratoria, Pisa, Italy
| | - Rienk Nieuwland
- Academic Medical Centre of the University of Amsterdam, Department of Clinical Chemistry and Vesicle Observation Centre, Amsterdam, The Netherlands
| | - Leonardo Nimrichter
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia, Rio de Janeiro, Brazil
| | | | - Esther NM Nolte-’t Hoen
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | - Nicole Noren Hooten
- National Institutes of Health, National Institute on Aging, Baltimore, MD, USA
| | - Lorraine O’Driscoll
- Trinity College Dublin, School of Pharmacy and Pharmaceutical Sciences, Panoz Institute & Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Tina O’Grady
- University of Liège, GIGA-R(MBD), PSI Laboratory, Liège, Belgium
| | - Ana O’Loghlen
- Queen Mary University of London, Blizard Institute, Epigenetics & Cellular Senescence Group, London, UK
| | - Takahiro Ochiya
- National Cancer Center Research Institute, Division of Molecular and Cellular Medicine, Tokyo, Japan
| | - Martin Olivier
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Alberto Ortiz
- IIS-Fundacion Jimenez Diaz-UAM, Department of Nephrology and Hypertension, Madrid, Spain
- Spanish Kidney Research Network, REDINREN, Madrid, Spain
- Universidad Autónoma de Madrid, School of Medicine, Department of Medicine, Madrid, Spain
| | - Luis A Ortiz
- Graduate School of Public Health at the University of Pittsburgh, Division of Occupational and Environmental Medicine, Pittsburgh, PA, USA
| | | | - Ole Østergaard
- Statens Serum Institut, Department of Autoimmunology and Biomarkers, Copenhagen, Denmark
- University of Copenhagen, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research, Copenhagen, Denmark
| | - Matias Ostrowski
- University of Buenos Aires, Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Buenos Aires, Argentina
| | - Jaesung Park
- POSTECH (Pohang University of Science and Technology), Department of Life Sciences, Pohang, South Korea
| | - D. Michiel Pegtel
- Amsterdam University Medical Centers, Department of Pathology, Amsterdam, The Netherlands
| | - Hector Peinado
- Spanish National Cancer Research Center (CNIO), Molecular Oncology Programme, Microenvironment and Metastasis Laboratory, Madrid, Spain
| | - Francesca Perut
- IRCCS - Istituto Ortopedico Rizzoli, Laboratory for Orthopaedic Pathophysiology and Regenerative Medicine, Bologna, Italy
| | - Michael W Pfaffl
- Technical University of Munich, TUM School of Life Sciences Weihenstephan, Division of Animal Physiology and Immunology, Freising, Germany
| | - Donald G Phinney
- The Scripps Research Institute-Scripps Florida, Department of Molecular Medicine, Jupiter, FL, USA
| | - Bartijn CH Pieters
- Radboud University Medical Center, Department of Rheumatology, Nijmegen, The Netherlands
| | - Ryan C Pink
- Oxford Brookes University, Department of Biological and Medical Sciences, Oxford, UK
| | - David S Pisetsky
- Duke University Medical Center, Departments of Medicine and Immunology, Durham, NC, USA
- Durham VAMC, Medical Research Service, Durham, NC, USA
| | | | - Iva Polakovicova
- Pontificia Universidad Católica de Chile, Advanced Center for Chronic Diseases (ACCDiS), Santiago, Chile
- Pontificia Universidad Católica de Chile, Faculty of Medicine, Department of Hematology-Oncology, Santiago, Chile
| | - Ivan KH Poon
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Bonita H Powell
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | | | - Lynn Pulliam
- University of California, San Francisco, CA, USA
- Veterans Affairs Medical Center, San Francisco, CA, USA
| | - Peter Quesenberry
- The Warren Alpert Medical School of Brown University, Department of Medicine, Providence, RI, USA
| | - Annalisa Radeghieri
- CSGI - Research Center for Colloids and Nanoscience, Florence, Italy
- University of Brescia, Department of Molecular and Translational Medicine, Brescia, Italy
| | - Robert L Raffai
- Department of Veterans Affairs, San Francisco, CA, USA
- University of California, San Francisco, CA, USA
| | - Stefania Raimondo
- University of Palermo, Department of Biopathology and Medical Biotechnologies, Palermo, Italy
| | - Janusz Rak
- McGill University, Montreal, Canada
- McGill University, The Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Marcel I Ramirez
- Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
- Universidade Federal de Paraná, Paraná, Brazil
| | - Graça Raposo
- Institut Curie, CNRS UMR144, PSL Research University, Paris, France
| | - Morsi S Rayyan
- University of Michigan Medical School, Ann Arbor, MI, USA
| | - Neta Regev-Rudzki
- Weizmann Institute of Science, Department of Biomolecular Sciences, Rehovot, Israel
| | - Franz L Ricklefs
- University Medical Center Hamburg-Eppendorf, Department of Neurosurgery, Hamburg, Germany
| | - Paul D Robbins
- University of Minnesota Medical School, Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, Minneapolis, MN, USA
| | - David D Roberts
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Laboratory of Pathology, Bethesda, MD, USA
| | | | - Eva Rohde
- Paracelsus Medical University, Department of Transfusion Medicine, Salzburg, Austria
- Paracelsus Medical University, GMP Unit, Salzburg, Austria
- Spinal Cord Injury & Tissue Regeneration Center Salzburg (SCI-TReCS), Salzburg, Austria
| | - Sophie Rome
- University of Lyon, Lyon-Sud Faculty of Medicine, CarMeN Laboratory (UMR INSERM 1060-INRA 1397), Pierre-Bénite, France
| | - Kasper MA Rouschop
- Maastricht University, GROW, School for Oncology and Developmental Biology, Maastricht Radiation Oncology (MaastRO) Lab, Maastricht, The Netherlands
| | - Aurelia Rughetti
- Sapienza University of Rome, Department of Experimental Medicine, Rome, Italy
| | | | - Paula Saá
- American Red Cross, Scientific Affairs, Gaithersburg, MD, USA
| | - Susmita Sahoo
- Icahn School of Medicine at Mount Sinai, Department of Medicine, Cardiology, New York City, NY, USA
| | - Edison Salas-Huenuleo
- Advanced Center for Chronic Diseases, Santiago, Chile
- University of Chile, Faculty of Chemical and Pharmaceutical Science, Laboratory of Nanobiotechnology and Nanotoxicology, Santiago, Chile
| | - Catherine Sánchez
- Clínica las Condes, Extracellular Vesicles in Personalized Medicine Group, Santiago, Chile
| | - Julie A Saugstad
- Oregon Health & Science University, Department of Anesthesiology & Perioperative Medicine, Portland, OR, USA
| | - Meike J Saul
- Technische Universität Darmstadt, Department of Biology, Darmstadt, Germany
| | - Raymond M Schiffelers
- University Medical Center Utrecht, Laboratory for Clinical Chemistry & Hematology, Utrecht, The Netherlands
| | - Raphael Schneider
- University of Toronto, Department of Laboratory Medicine and Pathobiology, Toronto, Canada
- University of Toronto, Department of Medicine, Division of Neurology, Toronto, Canada
| | - Tine Hiorth Schøyen
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | | | - Eriomina Shahaj
- Fondazione IRCCS Istituto Nazionale dei Tumori, Unit of Immunotherapy of Human Tumors, Milan, Italy
| | - Shivani Sharma
- University of California, Los Angeles, California NanoSystems Institute, Los Angeles, CA, USA
- University of California, Los Angeles, Department of Pathology and Laboratory Medicine, Los Angeles, CA, USA
- University of California, Los Angeles, Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Olga Shatnyeva
- AstraZeneca, Discovery Sciences, IMED Biotech Unit, Gothenburg, Sweden
| | - Faezeh Shekari
- Royan Institute for Stem Cell Biology and Technology, ACECR, Cell Science Research Center, Department of Stem Cells and Developmental Biology, Tehran, Iran
| | - Ganesh Vilas Shelke
- University of Gothenburg, Institute of Clinical Sciences, Department of Surgery, Sahlgrenska Cancer Center, Gothenburg, Sweden
- University of Gothenburg, Institute of Medicine at Sahlgrenska Academy, Krefting Research Centre, Gothenburg, Sweden
| | - Ashok K Shetty
- Research Service, Olin E. Teague Veterans’ Medical Center, Temple, TX, USA
- Texas A&M University College of Medicine, Institute for Regenerative Medicine and Department of Molecular and Cellular Medicine, College Station, TX, USA
| | | | - Pia R-M Siljander
- University of Helsinki, EV Core Facility, Helsinki, Finland
- University of Helsinki, Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences Research Programme, EV group, Helsinki, Finland
| | - Andreia M Silva
- INEB - Instituto de Engenharia Biomédica, Porto, Portugal
- University of Porto, i3S-Instituto de Investigação e Inovação em Saúde, Porto, Portugal
- University of Porto, ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Porto, Portugal
| | - Agata Skowronek
- Maria Sklodowska-Curie Institute - Oncology Center, Gliwice Branch, Gliwice, Poland
| | - Orman L Snyder
- Kansas State University, College of Veterinary Medicine, Manhattan, KS, USA
| | | | - Barbara W Sódar
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - Carolina Soekmadji
- QIMR Berghofer Medical Research Institute, Herston, Australia
- The University of Queensland, Brisbane, Australia
| | - Javier Sotillo
- James Cook University, Australian Institute of Tropical Health and Medicine, Centre for Biodiscovery and Molecular Development of Therapeutics, Cairns, Australia
| | | | - Willem Stoorvogel
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | - Shannon L Stott
- Harvard Medical School, Department of Medicine, Boston, MA, USA
- Massachusetts General Cancer Center, Boston, MA, USA
| | - Erwin F Strasser
- FAU Erlangen-Nuremberg, Transfusion and Haemostaseology Department, Erlangen, Germany
| | - Simon Swift
- University of Auckland, Department of Molecular Medicine and Pathology, Auckland, New Zealand
| | - Hidetoshi Tahara
- Hiroshima University, Institute of Biomedical & Health Sciences, Department of Cellular and Molecular Biology, Hiroshima, Japan
| | - Muneesh Tewari
- University of Michigan, Biointerfaces Institute, Ann Arbor, MI, USA
- University of Michigan, Department of Biomedical Engineering, Ann Arbor, MI, USA
- University of Michigan, Department of Internal Medicine - Hematology/Oncology Division, Ann Arbor, MI, USA
| | - Kate Timms
- University of Manchester, Manchester, UK
| | - Swasti Tiwari
- Georgetown University, Department of Medicine, Washington, DC, USA
- Sanjay Gandhi Postgraduate Institute of Medical Sciences, Department of Molecular Medicine & Biotechnology, Lucknow, India
| | - Rochelle Tixeira
- La Trobe University, La Trobe Institute for Molecular Science, Department of Biochemistry and Genetics, Bundoora, Australia
| | - Mercedes Tkach
- Institut Curie, INSERM U932, PSL Research University, Paris, France
| | - Wei Seong Toh
- National University of Singapore, Faculty of Dentistry, Singapore
| | - Richard Tomasini
- INSERM U1068, Aix Marseille University, CNRS UMR7258, Marseille, France
| | | | - Juan Pablo Tosar
- Institut Pasteur de Montevideo, Functional Genomics Unit, Montevideo, Uruguay
- Universidad de la República, Faculty of Science, Nuclear Research Center, Analytical Biochemistry Unit, Montevideo, Uruguay
| | | | - Lorena Urbanelli
- University of Perugia, Department of Chemistry, Biology and Biotechnology, Perugia, Italy
| | - Pieter Vader
- University Medical Center Utrecht, Laboratory for Clinical Chemistry & Hematology, Utrecht, The Netherlands
| | - Bas WM van Balkom
- University Medical Center Utrecht, Department of Nephrology and Hypertension, Utrecht, The Netherlands
| | - Susanne G van der Grein
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | - Jan Van Deun
- Cancer Research Institute Ghent, Ghent, Belgium
- Ghent University, Department of Radiation Oncology and Experimental Cancer Research, Laboratory of Experimental Cancer Research, Ghent, Belgium
| | - Martijn JC van Herwijnen
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | | | | | - Martin E van Royen
- Department of Pathology, Erasmus MC, Erasmus Optical Imaging Centre, Rotterdam, The Netherlands
| | | | - M Helena Vasconcelos
- IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
- University of Porto, Faculty of Pharmacy (FFUP), Porto, Portugal
- University of Porto, i3S-Instituto de Investigação e Inovação em Saúde, Porto, Portugal
| | - Ivan J Vechetti
- University of Kentucky, College of Medicine, Department of Physiology, Lexington, KY, USA
| | - Tiago D Veit
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Microbiologia, Imunologia e Parasitologia, Porto Alegre, Brazil
| | - Laura J Vella
- The Florey Institute of Neuroscience and Mental Health, Melbourne, Australia
- The University of Melbourne, The Department of Medicine, Melbourne, Australia
| | - Émilie Velot
- UMR 7365 CNRS-Université de Lorraine, Vandœuvre-lès-Nancy, France
| | | | - Beate Vestad
- Oslo University Hospital Rikshospitalet, Research Institute of Internal Medicine, Oslo, Norway
- Regional Research Network on Extracellular Vesicles, RRNEV, Oslo, Norway
- University of Oslo, Institute of Clinical Medicine, Oslo, Norway
| | - Jose L Viñas
- Kidney Research Centre, Ottawa, Canada
- Ottawa Hospital Research Institute, Ottawa, Canada
- University of Ottawa, Ottawa, Canada
| | - Tamás Visnovitz
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - Krisztina V Vukman
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - Jessica Wahlgren
- University of Gothenburg, The Sahlgrenska Academy, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, Mölndal, Sweden
| | - Dionysios C Watson
- Case Western Reserve University, Department of Medicine, Cleveland, OH, USA
- University Hospitals Cleveland Medical Center, Department of Medicine, Cleveland, OH, USA
| | - Marca HM Wauben
- Utrecht University, Faculty of Veterinary Medicine, Department of Biochemistry and Cell Biology, Utrecht, The Netherlands
| | - Alissa Weaver
- Vanderbilt University School of Medicine, Department of Cell and Developmental Biology, Nashville, TN, USA
| | | | - Viktoria Weber
- Danube University Krems, Department for Biomedical Research and Christian Doppler Laboratory for Innovative Therapy Approaches in Sepsis, Krems an der Donau, Austria
| | - Ann M Wehman
- University of Würzburg, Rudolf Virchow Center, Würzburg, Germany
| | - Daniel J Weiss
- The University of Vermont Medical Center, Department of Medicine, Burlington, VT, USA
| | - Joshua A Welsh
- National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, MD, USA
| | - Sebastian Wendt
- University Hospital RWTH Aachen, Department of Thoracic and Cardiovascular Surgery, Aachen, Germany
| | - Asa M Wheelock
- Karolinska Institute, Department of Medicine and Center for Molecular Medicine, Respiratory Medicine Unit, Stockholm, Sweden
| | - Zoltán Wiener
- Semmelweis University, Department of Genetics, Cell- and Immunobiology, Budapest, Hungary
| | - Leonie Witte
- University Medical Center Göttingen, Developmental Biochemistry, Göttingen, Germany
- University Medical Center Göttingen, Hematology and Oncology, Göttingen, Germany
| | - Joy Wolfram
- Chinese Academy of Sciences, Wenzhou Institute of Biomaterials and Engineering, Wenzhou, China
- Houston Methodist Research Institute, Department of Nanomedicine, Houston, TX, USA
- Mayo Clinic, Department of Transplantation Medicine/Department of Physiology and Biomedical Engineering, Jacksonville, FL, USA
| | - Angeliki Xagorari
- George Papanicolaou Hospital, Public Cord Blood Bank, Department of Haematology - BMT Unit, Thessaloniki, Greece
| | - Patricia Xander
- Universidade Federal de São Paulo Campus Diadema, Departamento de Ciências Farmacêuticas, Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, São Paulo, Brazil
| | - Jing Xu
- BC Cancer, Canada’s Michael Smith Genome Sciences Centre, Vancouver, Canada
- Simon Fraser University, Department of Molecular Biology and Biochemistry, Burnaby, Canada
| | - Xiaomei Yan
- Xiamen University, Department of Chemical Biology, Xiamen, China
| | - María Yáñez-Mó
- Centro de Biología Molecular Severo Ochoa, Instituto de Investigación Sanitaria la Princesa (IIS-IP), Madrid, Spain
- Universidad Autónoma de Madrid, Departamento de Biología Molecular, Madrid, Spain
| | - Hang Yin
- Tsinghua University, School of Pharmaceutical Sciences, Beijing, China
| | - Yuana Yuana
- Technical University Eindhoven, Faculty Biomedical Technology, Eindhoven, The Netherlands
| | - Valentina Zappulli
- University of Padova, Department of Comparative Biomedicine and Food Science, Padova, Italy
| | - Jana Zarubova
- Institute of Physiology CAS, Department of Biomaterials and Tissue Engineering, BIOCEV, Vestec, Czech Republic
- Institute of Physiology CAS, Department of Biomaterials and Tissue Engineering, Prague, Czech Republic
- University of California, Los Angeles, Department of Bioengineering, Los Angeles, CA, USA
| | - Vytautas Žėkas
- Vilnius University, Institute of Biomedical Sciences, Department of Physiology, Biochemistry, Microbiology and Laboratory Medicine, Vilnius, Lithuania
| | - Jian-ye Zhang
- Guangzhou Medical University, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology, Guangzhou, China
| | - Zezhou Zhao
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA
| | - Lei Zheng
- Nanfang Hospital, Southern Medical University, Department of Clinical Laboratory Medicine, Guangzhou, China
| | | | - Antje M Zickler
- Karolinska Institute, Clinical Research Center, Unit for Molecular Cell and Gene Therapy Science, Stockholm, Sweden
| | - Pascale Zimmermann
- Aix-Marseille Université, Institut Paoli-Calmettes, INSERM U1068, CNRS UMR7258, Centre de Recherche en Cancérologie de Marseille, Marseille, France
- KU Leuven (Leuven University), Department of Human Genetics, Leuven, Belgium
| | - Angela M Zivkovic
- University of California, Davis, Department of Nutrition, Davis, CA, USA
| | | | - Ewa K Zuba-Surma
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Kraków, Poland
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Hervé J, Haurogné K, Bacou E, Pogu S, Allard M, Mignot G, Bach JM, Lieubeau B. β2-adrenergic stimulation of dendritic cells favors IL-10 secretion by CD4+ T cells. Immunol Res 2017; 65:1156-1163. [DOI: 10.1007/s12026-017-8966-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Salama A, Mosser M, Lévêque X, Perota A, Judor JP, Danna C, Pogu S, Mouré A, Jégou D, Gaide N, Abadie J, Gauthier O, Concordet JP, Le Bas-Bernardet S, Riochet D, Le Berre L, Hervouet J, Minault D, Weiss P, Guicheux J, Brouard S, Bosch S, Lagutina I, Duchi R, Lazzari G, Cozzi E, Blancho G, Conchon S, Galli C, Soulillou JP, Bach JM. Neu5Gc and α1-3 GAL Xenoantigen Knockout Does Not Affect Glycemia Homeostasis and Insulin Secretion in Pigs. Diabetes 2017; 66:987-993. [PMID: 28082457 DOI: 10.2337/db16-1060] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/08/2017] [Indexed: 11/13/2022]
Abstract
Xenocell therapy from neonate or adult pig pancreatic islets is one of the most promising alternatives to allograft in type 1 diabetes for addressing organ shortage. In humans, however, natural and elicited antibodies specific for pig xenoantigens, α-(1,3)-galactose (GAL) and N-glycolylneuraminic acid (Neu5Gc), are likely to significantly contribute to xenoislet rejection. We obtained double-knockout (DKO) pigs lacking GAL and Neu5Gc. Because Neu5Gc-/- mice exhibit glycemic dysregulations and pancreatic β-cell dysfunctions, we evaluated islet function and glucose metabolism regulation in DKO pigs. Isolation of islets from neonate piglets yielded identical islet equivalent quantities to quantities obtained from control wild-type pigs. In contrast to wild-type islets, DKO islets did not induce anti-Neu5Gc antibody when grafted in cytidine monophosphate-N-acetylneuraminic acid hydroxylase KO mice and exhibited in vitro normal insulin secretion stimulated by glucose and theophylline. Adult DKO pancreata showed no histological abnormalities, and immunostaining of insulin and glucagon was similar to that from wild-type pancreata. Blood glucose, insulin, C-peptide, the insulin-to-glucagon ratio, and HOMA-insulin resistance in fasted adult DKO pigs and blood glucose and C-peptide changes after intravenous glucose or insulin administration were similar to wild-type pigs. This first evaluation of glucose homeostasis in DKO pigs for two major xenoantigens paves the way to their use in (pre)clinical studies.
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Affiliation(s)
- Apolline Salama
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
- Société d'Accélération du Transfert de Technologies Ouest Valorisation, Rennes, France
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Mathilde Mosser
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Xavier Lévêque
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Andrea Perota
- Avantea Laboratory of Reproductive Technologies, Cremona, Italy
| | - Jean-Paul Judor
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Corentin Danna
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Sylvie Pogu
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Anne Mouré
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Dominique Jégou
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Nicolas Gaide
- Animal cancers as Models for Research in comparative Oncology (AMaROC), Oniris, Nantes, France
| | - Jérôme Abadie
- Animal cancers as Models for Research in comparative Oncology (AMaROC), Oniris, Nantes, France
| | - Olivier Gauthier
- Department of Experimental Surgery, Center for Research and Preclinical Investigation, Oniris, Nantes, France
| | - Jean-Paul Concordet
- Muséum National d'Histoire Naturelle, Paris, France
- CNRS UMR 7196, Paris, France
- INSERM U1154, Paris, France
| | - Stéphanie Le Bas-Bernardet
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - David Riochet
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
- Department of Pediatrics, Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Ludmilla Le Berre
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Jérémy Hervouet
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - David Minault
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Pierre Weiss
- INSERM UMRS 791, Laboratoire d'ingénierie Ostéo-Articulaire et Dentaire (LIOAD), Nantes, France; University of Nantes, UFR Odontologie, Nantes, France
- Nantes University Hospital-CHU de Nantes, PHU4 OTONN, Nantes, France
| | - Jérôme Guicheux
- INSERM UMRS 791, Laboratoire d'ingénierie Ostéo-Articulaire et Dentaire (LIOAD), Nantes, France; University of Nantes, UFR Odontologie, Nantes, France
- Nantes University Hospital-CHU de Nantes, PHU4 OTONN, Nantes, France
| | - Sophie Brouard
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
- Centre d'investigation clinique (CIC) Biotherapy, Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Steffi Bosch
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
| | - Irina Lagutina
- Avantea Laboratory of Reproductive Technologies, Cremona, Italy
| | - Roberto Duchi
- Avantea Laboratory of Reproductive Technologies, Cremona, Italy
| | - Giovanna Lazzari
- Avantea Laboratory of Reproductive Technologies, Cremona, Italy
- Avantea Foundation, Cremona, Italy
| | - Emanuele Cozzi
- Transplantation Immunology Unit, Department of Transfusion Medicine, University of Padua-Ospedale Giustinianeo, Padua, Italy
- CORIT (Consortium for Research in Organ Transplantation), Padua, Italy
| | - Gilles Blancho
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
- Centre d'investigation clinique (CIC) Biotherapy, Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Sophie Conchon
- INSERM CRTI UMR 1064, University of Nantes, Nantes, France
- Institute of Transplantation, Urology and Nephrology (ITUN), Nantes University Hospital-CHU de Nantes, Nantes, France
| | - Cesare Galli
- Avantea Laboratory of Reproductive Technologies, Cremona, Italy
- Avantea Foundation, Cremona, Italy
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Italy
| | | | - Jean-Marie Bach
- IECM, Immuno-endocrinology, EA4644 Oniris, University of Nantes, USC1383 INRA, Oniris, Nantes, France
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Bacou E, Haurogné K, Mignot G, Allard M, De Beaurepaire L, Marchand J, Terenina E, Billon Y, Jacques J, Bach JM, Mormède P, Hervé J, Lieubeau B. Acute social stress-induced immunomodulation in pigs high and low responders to ACTH. Physiol Behav 2016; 169:1-8. [PMID: 27867043 DOI: 10.1016/j.physbeh.2016.11.012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 01/11/2023]
Abstract
Pig husbandry is known as an intensive breeding system, piglets being submitted to multiple stressful events such as early weaning, successive mixing, crowding and shipping. These stressors are thought to impair immune defences and might contribute, at least partly, to the prophylactic use of antibiotics. Robustness was recently defined as the ability of an individual to express a high-production potential in a wide variety of environmental conditions. Increasing robustness thus appears as a valuable option to improve resilience to stressors and could be obtained by selecting piglets upon their adrenocortical activity. In this study, we aimed at depicting the consequences of an acute social stress on the immune capacity of piglets genetically selected upon divergent hypothalamic-pituitary-adrenocortical (HPA) axis activity. For this purpose, we monitored neuroendocrine and immune parameters, in high- (HPAhi) and low- (HPAlo) responders to ACTH, just before and immediately after a one-hour mixing with unfamiliar conspecifics. As expected, stressed piglets displayed higher levels of circulating cortisol and norepinephrine. Blood cell count analysis combined to flow cytometry revealed a stress-induced leukocyte mobilization in the bloodstream with a specific recruitment of CD8α+ lymphocytes. Besides, one-hour mixing decreased LPS-induced IL-8 and TNFα secretions in whole-blood assays (WBA) and reduced mononuclear cell phagocytosis. Altogether, our data demonstrate that acute social stress alters immune competence of piglets from both groups, and bring new insights in favour of good farming practices. While for most parameters high- and low-responders to ACTH behaved similarly, HPAhi piglets displayed higher number of CD4+ CD8α- T cells, as well as increased cytokine production in WBA (LPS-induced TNFα and PIL-induced IL-8), which could confer them increased resistance to pathogens. Finally, a principal component analysis including all parameters highlighted that overall stress effects were less pronounced on piglets with a strong HPA axis. Thus, selection upon adrenocortical axis activity seems to reduce the magnitude of response to stress and appears as a good tool to increase piglet robustness.
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Affiliation(s)
- Elodie Bacou
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Karine Haurogné
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Grégoire Mignot
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Marie Allard
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Laurence De Beaurepaire
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Jordan Marchand
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Elena Terenina
- GenPhySE, Université de Toulouse, INRA, INPT, ENVT, F-31326 Castanet-Tolosan, France
| | - Yvon Billon
- GenESI, INRA, Le Magneraud, F-17700 Saint-Pierre-d'Amilly, France
| | | | - Jean-Marie Bach
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France
| | - Pierre Mormède
- GenPhySE, Université de Toulouse, INRA, INPT, ENVT, F-31326 Castanet-Tolosan, France
| | - Julie Hervé
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France.
| | - Blandine Lieubeau
- IECM, INRA, Oniris, Université de Nantes, LUNAM, La Chantrerie, CS 40706, F-44307 Nantes Cedex 3, France.
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Bosch S, de Beaurepaire L, Allard M, Mosser M, Heichette C, Chrétien D, Jegou D, Bach JM. Trehalose prevents aggregation of exosomes and cryodamage. Sci Rep 2016; 6:36162. [PMID: 27824088 PMCID: PMC5099918 DOI: 10.1038/srep36162] [Citation(s) in RCA: 204] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 10/07/2016] [Indexed: 12/19/2022] Open
Abstract
Exosomes are important mediators in intercellular communication. Released by many cell types, they transport proteins, lipids, and nucleic acids to distant recipient cells and contribute to important physiopathological processes. Standard current exosome isolation methods based on differential centrifugation protocols tend to induce aggregation of particles in highly concentrated suspensions and freezing of exosomes can induce damage and inconsistent biological activity. Trehalose is a natural, non-toxic sugar widely used as a protein stabilizer and cryoprotectant by the food and drug industry. Here we report that addition of 25 mM trehalose to pancreatic beta-cell exosome-like vesicle isolation and storage buffer narrows the particle size distribution and increases the number of individual particles per microgram of protein. Repeated freeze-thaw cycles induce an increase in particle concentration and in the width of the size distribution for exosome-like vesicles stored in PBS, but not in PBS 25 mM trehalose. No signs of lysis or incomplete vesicles were observed by cryo-electron tomography in PBS and trehalose samples. In macrophage immune assays, beta-cell extracellular vesicles in trehalose show consistently higher TNF-alpha cytokine secretion stimulation indexes suggesting improved preservation of biological activity. The addition of trehalose might be an attractive means to standardize experiments in the field of exosome research and downstream applications.
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Affiliation(s)
- Steffi Bosch
- IECM, EA4644 Nantes University, ONIRIS, USC1383 INRA, Nantes, France
| | | | - Marie Allard
- IECM, EA4644 Nantes University, ONIRIS, USC1383 INRA, Nantes, France
| | - Mathilde Mosser
- IECM, EA4644 Nantes University, ONIRIS, USC1383 INRA, Nantes, France
| | | | - Denis Chrétien
- IGDR, UMR6290 CNRS, University of Rennes 1, Rennes, France.,MRIC-Biosit, UMS3480 CNRS, University of Rennes 1, Rennes, France
| | - Dominique Jegou
- IECM, EA4644 Nantes University, ONIRIS, USC1383 INRA, Nantes, France
| | - Jean-Marie Bach
- IECM, EA4644 Nantes University, ONIRIS, USC1383 INRA, Nantes, France
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21
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Reynard O, Jacquot F, Evanno G, Mai HL, Salama A, Martinet B, Duvaux O, Bach JM, Conchon S, Judor JP, Perota A, Lagutina I, Duchi R, Lazzari G, Le Berre L, Perreault H, Lheriteau E, Raoul H, Volchkov V, Galli C, Soulillou JP. Anti-EBOV GP IgGs Lacking α1-3-Galactose and Neu5Gc Prolong Survival and Decrease Blood Viral Load in EBOV-Infected Guinea Pigs. PLoS One 2016; 11:e0156775. [PMID: 27280712 PMCID: PMC4900587 DOI: 10.1371/journal.pone.0156775] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 02/10/2016] [Accepted: 05/19/2016] [Indexed: 01/13/2023] Open
Abstract
Polyclonal xenogenic IgGs, although having been used in the prevention and cure of severe infectious diseases, are highly immunogenic, which may restrict their usage in new applications such as Ebola hemorrhagic fever. IgG glycans display powerful xenogeneic antigens in humans, for example α1–3 Galactose and the glycolyl form of neuraminic acid Neu5Gc, and IgGs deprived of these key sugar epitopes may represent an advantage for passive immunotherapy. In this paper, we explored whether low immunogenicity IgGs had a protective effect on a guinea pig model of Ebola virus (EBOV) infection. For this purpose, a double knock-out pig lacking α1–3 Galactose and Neu5Gc was immunized against virus-like particles displaying surface EBOV glycoprotein GP. Following purification from serum, hyper-immune polyclonal IgGs were obtained, exhibiting an anti-EBOV GP titer of 1:100,000 and a virus neutralizing titer of 1:100. Guinea pigs were injected intramuscularly with purified IgGs on day 0 and day 3 post-EBOV infection. Compared to control animals treated with IgGs from non-immunized double KO pigs, the anti-EBOV IgGs-treated animals exhibited a significantly prolonged survival and a decreased virus load in blood on day 3. The data obtained indicated that IgGs lacking α1–3 Galactose and Neu5Gc, two highly immunogenic epitopes in humans, have a protective effect upon EBOV infection.
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Affiliation(s)
- Olivier Reynard
- Molecular Basis of Viral Pathogenicity, CIRI, INSERM U1111—CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale supérieure de Lyon, Lyon, France
| | | | | | - Hoa Le Mai
- INSERM, UMR 1064, Nantes, France
- CHU de Nantes, ITUN, Nantes, France
- Université de Nantes, Nantes, France
| | | | - Bernard Martinet
- INSERM, UMR 1064, Nantes, France
- CHU de Nantes, ITUN, Nantes, France
- Université de Nantes, Nantes, France
| | | | - Jean-Marie Bach
- Xenothera, Nantes, France
- IECM, EA4644 Université de Nantes, ONIRIS, USC1383 INRA, Nantes, France
| | - Sophie Conchon
- INSERM, UMR 1064, Nantes, France
- CHU de Nantes, ITUN, Nantes, France
- Université de Nantes, Nantes, France
| | - Jean-Paul Judor
- INSERM, UMR 1064, Nantes, France
- CHU de Nantes, ITUN, Nantes, France
- Université de Nantes, Nantes, France
| | - Andrea Perota
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
| | - Irina Lagutina
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
| | - Roberto Duchi
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
| | - Giovanna Lazzari
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
- Avantea Foundation, Cremona, Italy
| | - Ludmilla Le Berre
- INSERM, UMR 1064, Nantes, France
- CHU de Nantes, ITUN, Nantes, France
- Université de Nantes, Nantes, France
| | | | | | - Hervé Raoul
- Inserm-Jean Mérieux BSL4 Laboratory, US003 Inserm, Lyon, France
- * E-mail: (JPS); (VV); ; (HR)
| | - Viktor Volchkov
- Molecular Basis of Viral Pathogenicity, CIRI, INSERM U1111—CNRS UMR5308, Université de Lyon, Université Claude Bernard Lyon 1, Ecole Normale supérieure de Lyon, Lyon, France
- * E-mail: (JPS); (VV); ; (HR)
| | - Cesare Galli
- Avantea, Laboratory of Reproductive Technologies, Cremona, Italy
- Avantea Foundation, Cremona, Italy
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Italy
- * E-mail: (JPS); (VV); ; (HR)
| | - Jean-Paul Soulillou
- Xenothera, Nantes, France
- Université de Nantes, Nantes, France
- * E-mail: (JPS); (VV); ; (HR)
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22
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Couvrat-Desvergnes G, Salama A, Le Berre L, Evanno G, Viklicky O, Hruba P, Vesely P, Guerif P, Dejoie T, Rousse J, Nicot A, Bach JM, Ang E, Foucher Y, Brouard S, Castagnet S, Giral M, Harb J, Perreault H, Charreau B, Lorent M, Soulillou JP. Rabbit antithymocyte globulin-induced serum sickness disease and human kidney graft survival. J Clin Invest 2015; 125:4655-65. [PMID: 26551683 DOI: 10.1172/jci82267] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 10/08/2015] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Rabbit-generated antithymocyte globulins (ATGs), which target human T cells, are widely used as immunosuppressive agents during treatment of kidney allograft recipients. However, ATGs can induce immune complex diseases, including serum sickness disease (SSD). Rabbit and human IgGs have various antigenic differences, including expression of the sialic acid Neu5Gc and α-1-3-Gal (Gal), which are not synthesized by human beings. Moreover, anti-Neu5Gc antibodies have been shown to preexist and be elicited by immunization in human subjects. This study aimed to assess the effect of SSD on long-term kidney allograft outcome and to compare the immunization status of grafted patients presenting with SSD following ATG induction treatment. METHODS We analyzed data from a cohort of 889 first kidney graft recipients with ATG induction (86 with SSD [SSD(+)] and 803 without SSD [SSD(-)]) from the Données Informatisées et Validées en Transplantation data bank. Two subgroups of SSD(+) and SSD(-) patients that had received ATG induction treatment were then assessed for total anti-ATG, anti-Neu5Gc, and anti-Gal antibodies using ELISA assays on sera before and after transplantation. RESULTS SSD was significantly associated with long-term graft loss (>10 years, P = 0.02). Moreover, SSD(+) patients exhibited significantly elevated titers of anti-ATG (P = 0.043) and anti-Neu5Gc (P = 0.007) IgGs in late post-graft samples compared with SSD(-) recipients. CONCLUSION In conclusion, our data indicate that SSD is a major contributing factor of late graft loss following ATG induction and that anti-Neu5Gc antibodies increase over time in SSD(+) patients. FUNDING This study was funded by Société d'Accélération du Transfert de Technologies Ouest Valorisation, the European FP7 "Translink" research program, the French National Agency of Research, Labex Transplantex, the Natural Science and Engineering Research Council of Canada, and the Canadian Foundation for Innovation.
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Haurogné K, Pavlovic M, Rogniaux H, Bach JM, Lieubeau B. Type 1 Diabetes Prone NOD Mice Have Diminished Cxcr1 mRNA Expression in Polymorphonuclear Neutrophils and CD4+ T Lymphocytes. PLoS One 2015; 10:e0134365. [PMID: 26230114 PMCID: PMC4521788 DOI: 10.1371/journal.pone.0134365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 02/06/2015] [Accepted: 07/08/2015] [Indexed: 01/09/2023] Open
Abstract
In humans, CXCR1 and CXCR2 are two homologous proteins that bind ELR+ chemokines. Both receptors play fundamental roles in neutrophil functions such as migration and reactive oxygen species production. Mouse Cxcr1 and Cxcr2 genes are located in an insulin-dependent diabetes genetic susceptibility locus. The non obese diabetic (NOD) mouse is a spontaneous well-described animal model for insulin-dependent type 1 diabetes. In this disease, insulin deficiency results from the destruction of insulin-producing beta cells by autoreactive T lymphocytes. This slow-progressing disease is dependent on both environmental and genetic factors. Here, we report descriptive data about the Cxcr1 gene in NOD mice. We demonstrate decreased expression of mRNA for Cxcr1 in neutrophils and CD4+ lymphocytes isolated from NOD mice compared to other strains, related to reduced NOD Cxcr1 gene promoter activity. Looking for Cxcr1 protein, we next analyze the membrane proteome of murine neutrophils by mass spectrometry. Although Cxcr2 protein is clearly found in murine neutrophils, we did not find evidence of Cxcr1 peptides using this method. Nevertheless, in view of recently-published experimental data obtained in NOD mice, we argue for possible Cxcr1 involvement in type 1 diabetes pathogenesis.
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Affiliation(s)
- Karine Haurogné
- INRA USC1383, IECM, Nantes, France
- LUNAM Université, Oniris, EA4644, Nantes, France
| | | | | | - Jean-Marie Bach
- INRA USC1383, IECM, Nantes, France
- LUNAM Université, Oniris, EA4644, Nantes, France
| | - Blandine Lieubeau
- INRA USC1383, IECM, Nantes, France
- LUNAM Université, Oniris, EA4644, Nantes, France
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24
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Salama A, Fichou N, Allard M, Dubreil L, De Beaurepaire L, Viel A, Jégou D, Bösch S, Bach JM. MicroRNA-29b modulates innate and antigen-specific immune responses in mouse models of autoimmunity. PLoS One 2014; 9:e106153. [PMID: 25203514 PMCID: PMC4159199 DOI: 10.1371/journal.pone.0106153] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [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: 02/07/2014] [Accepted: 08/02/2014] [Indexed: 12/19/2022] Open
Abstract
In addition to important regulatory roles in gene expression through RNA interference, it has recently been shown that microRNAs display immune stimulatory effects through direct interaction with receptors of innate immunity of the Toll-like receptor family, aggravating neuronal damage and tumour growth. Yet no evidence exists on consequences of microRNA immune stimulatory actions in the context of an autoimmune disease. Using microRNA analogues, we here show that pancreatic beta cell-derived microRNA sequences induce pro-inflammatory (TNFa, IFNa, IL-12, IL-6) or suppressive (IL-10) cytokine secretion by primary mouse dendritic cells in a sequence-dependent manner. For miR-29b, immune stimulation in RAW264.7 macrophages involved the endosomal Toll-like receptor-7, independently of the canonical RNA interference pathway. In vivo, the systemic delivery of miR-29b activates CD11b+B220- myeloid and CD11b-B220+ plasmacytoid dendritic cells and induces IFNa, TNFa and IL-6 production in the serum of recipient mice. Strikingly, in a murine model of adoptive transfer of autoimmune diabetes, miR-29b reduces the cytolytic activity of transferred effector CD8+ T-cells, insulitis and disease incidence in a single standalone intervention. Endogenous miR-29b, spontaneously released from beta-cells within exosomes, stimulates TNFa secretion from spleen cells isolated from diabetes-prone NOD mice in vitro. Hence, microRNA sequences modulate innate and ongoing adaptive immune responses raising the question of their potential role in the breakdown of tolerance and opening up new applications for microRNA-based immune therapy.
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Affiliation(s)
- Apolline Salama
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Nolwenn Fichou
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Marie Allard
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Laurence Dubreil
- INRA, Nantes, France
- LUNAM Université, Oniris, UMR_A0703 PanTHER, Nantes, France
| | | | - Alexis Viel
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Dominique Jégou
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Steffi Bösch
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Jean-Marie Bach
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
- * E-mail:
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25
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Vabres B, Le Bas-Bernardet S, Riochet D, Chérel Y, Minault D, Hervouet J, Ducournau Y, Moreau A, Daguin V, Coulon F, Pallier A, Brouard S, Robson SC, Nottle MB, Cowan PJ, Venturi E, Mermillod P, Brachet P, Galli C, Lagutina I, Duchi R, Bach JM, Blancho G, Soulillou JP, Vanhove B. hCTLA4-Ig transgene expression in keratocytes modulates rejection of corneal xenografts in a pig to non-human primate anterior lamellar keratoplasty model. Xenotransplantation 2014; 21:431-43. [PMID: 25040113 DOI: 10.1111/xen.12107] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 04/07/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND Human corneal allografting is an established procedure to cure corneal blindness. However, a shortage of human donor corneas as well as compounding economic, cultural, and organizational reasons in many countries limit its widespread use. Artificial corneas as well as porcine corneal xenografts have been considered as possible alternatives. To date, all preclinical studies using de-cellularized pig corneas have shown encouraging graft survival results; however, relatively few studies have been conducted in pig to non-human primate (NHP) models, and particularly using genetically engineered donors. METHODS In this study, we assessed the potential benefit of using either hCTLA4-Ig transgenic or α1,3-Galactosyl Transferase (GT) Knock-Out (KO) plus transgenic hCD39/hCD55/hCD59/fucosyl-transferase pig lines in an anterior lamellar keratoplasty pig to NHP model. RESULTS Corneas from transgenic animals expressing hCTLA4-Ig under the transcriptional control of a neuron-specific enolase promoter showed transgene expression in corneal keratocytes of the stroma and expression was maintained after transplantation. Although a first acute rejection episode occurred in all animals during the second week post-keratoplasty, the median final rejection time was 70 days in the hCTLA4-Ig group vs. 21 days in the wild-type (WT) control group. In contrast, no benefit for corneal xenograft survival from the GTKO/transgenic pig line was found. At rejection, cell infiltration in hCTLA4Ig transgenic grafts was mainly composed of macrophages with fewer CD3+ CD4+ and CD79+ cells than in other types of grafts. Anti-donor xenoantibodies increased dramatically between days 9 and 14 post-surgery in all animals. CONCLUSIONS Local expression of the hCTLA4-Ig transgene dampens rejection of xenogeneic corneal grafts in this pig-to-NHP lamellar keratoplasty model. The hCTLA4-Ig transgene seems to target T-cell responses without impacting humoral responses, the control of which would presumably require additional peripheral immunosuppression.
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Tardif V, Riquelme SA, Remy S, Carreño LJ, Cortés CM, Simon T, Hill M, Louvet C, Riedel CA, Blancou P, Bach JM, Chauveau C, Bueno SM, Anegon I, Kalergis AM. Carbon monoxide decreases endosome-lysosome fusion and inhibits soluble antigen presentation by dendritic cells to T cells. Eur J Immunol 2013; 43:2832-44. [PMID: 23852701 DOI: 10.1002/eji.201343600] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/27/2013] [Accepted: 07/11/2013] [Indexed: 11/06/2022]
Abstract
Heme oxygenase-1 (HO-1) inhibits immune responses and inflammatory reactions via the catabolism of heme into carbon monoxide (CO), Fe(2+) , and biliverdin. We have previously shown that either induction of HO-1 or treatment with exogenous CO inhibits LPS-induced maturation of dendritic cells (DCs) and protects in vivo and in vitro antigen-specific inflammation. Here, we evaluated the capacity of HO-1 and CO to regulate antigen presentation on MHC class I and MHC class II molecules by LPS-treated DCs. We observed that HO-1 and CO treatment significantly inhibited the capacity of DCs to present soluble antigens to T cells. Inhibition was restricted to soluble OVA protein, as no inhibition was observed for antigenic OVA-derived peptides, bead-bound OVA protein, or OVA as an endogenous antigen. Inhibition of soluble antigen presentation was not due to reduced antigen uptake by DCs, as endocytosis remained functional after HO-1 induction and CO treatment. On the contrary, CO significantly reduced the efficiency of fusion between late endosomes and lysosomes and not by phagosomes and lysosomes. These data suggest that HO-1 and CO can inhibit the ability of LPS-treated DCs to present exogenous soluble antigens to naïve T cells by blocking antigen trafficking at the level of late endosome-lysosome fusion.
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Affiliation(s)
- Virginie Tardif
- INSERM, UMR 1064, Nantes, France; CHU Nantes, ITUN, Nantes, France; Faculté de Médecine, Université de Nantes, Nantes, France
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27
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Hervé J, Dubreil L, Tardif V, Terme M, Pogu S, Anegon I, Rozec B, Gauthier C, Bach JM, Blancou P. β2-Adrenoreceptor agonist inhibits antigen cross-presentation by dendritic cells. J Immunol 2013; 190:3163-71. [PMID: 23420884 DOI: 10.4049/jimmunol.1201391] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Despite widespread usage of β-adrenergic receptor (AR) agonists and antagonists in current clinical practice, our understanding of their interactions with the immune system is surprisingly sparse. Among the AR expressed by dendritic cells (DC), β2-AR can modify in vitro cytokine release upon stimulation. Because DC play a pivotal role in CD8(+) T cell immune responses, we examined the effects of β2-AR stimulation on MHC class I exogenous peptide presentation and cross-presentation capacities. We demonstrate that β2-AR agonist-exposed mature DC display a reduced ability to cross-present protein Ags while retaining their exogenous peptide presentation capability. This effect is mediated through the nonclassical inhibitory G (Gαi/0) protein. Moreover, inhibition of cross-presentation is neither due to reduced costimulatory molecule expression nor Ag uptake, but rather to impaired phagosomal Ag degradation. We observed a crosstalk between the TLR4 and β2-AR transduction pathways at the NF-κB level. In vivo, β2-AR agonist treatment of mice inhibits Ag protein cross-presentation to CD8(+) T cells but preserves their exogenous MHC class I peptide presentation capability. These findings may explain some side effects on the immune system associated with stress or β-agonist treatment and pave the way for the development of new immunomodulatory strategies.
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Affiliation(s)
- Julie Hervé
- L'Université Nantes Angers Le Mans, Oniris, Université de Nantes, EA 4644 Immunologie-Endocrinologie Cellulaire et Moléculaire, Nantes F-44300, France.
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28
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Simon T, Pogu S, Tardif V, Rigaud K, Rémy S, Piaggio E, Bach JM, Anegon I, Blancou P. Carbon monoxide-treated dendritic cells decrease β1-integrin induction on CD8⁺ T cells and protect from type 1 diabetes. Eur J Immunol 2012; 43:209-18. [PMID: 23065740 DOI: 10.1002/eji.201242684] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 09/21/2012] [Accepted: 10/08/2012] [Indexed: 01/12/2023]
Abstract
Carbon monoxide (CO) treatment improves pathogenic outcome of autoimmune diseases by promoting tolerance. However, the mechanism behind this protective tolerance is not yet defined. Here, we show in a transgenic mouse model for autoimmune diabetes that ex vivo gaseous CO (gCO)-treated DCs loaded with pancreatic β-cell peptides protect mice from disease. This protection is peptide-restricted, independent of IL-10 secretion by DCs and of CD4(+) T cells. Although no differences were observed in autoreactive CD8(+) T-cell function from gCO-treated versus untreated DC-immunized groups, gCO-treated DCs strongly inhibited accumulation of autoreactive CD8(+) T cells in the pancreas. Interestingly, induction of β1-integrin was curtailed when CD8(+) T cells were primed with gCO-treated DCs, and the capacity of these CD8(+) T cells to lyse isolated islet was dramatically impaired. Thus, immunotherapy using CO-treated DCs appears to be an original strategy to control autoimmune disease.
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Abstract
OBJECTIVE Despite the high levels of violence in South Africa, a lacunae in research exists regarding the influence of violence exposure on children. This study investigated the correlation between children's exposure to violence and the development of psychological problems such as depression. METHOD 186 Venda and 151 Northern Sotho adolescents were studied in a questionnaire survey to determine this relationship. Two measuring instruments were used: The Children's Depression Inventory and the Child Exposure to Violence Form. RESULTS When comparing gender, no significant differences were found in terms of overall exposure to violence between males and females. For depression, the total group of girls had a remarkably higher prevalence of depression. Regarding ethnic comparison, no significant differences were found in terms of overall exposure to violence or for witnessed events. However, the Venda adolescents had been victims significantly more often. Venda and Northern Sotho females had a similar prevalence of depression, but Northern Sotho boys had a higher depression rate than Venda boys. The correlation between victimisation and total group depression was relatively low for the Northern Sotho group, and non-existent for the Venda group. A significant correlation was found between total exposure to violence and depression for the overall group. CONCLUSION This study indicates that adolescents' exposure to violence and subsequent mental health is an area of concern. However, adolescents could be taught effective coping and problem-solving techniques in schools to help empower them against stressors they might encounter.
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Affiliation(s)
- J M Bach
- Department of Psychology, University of the Free State, Free State, South Africa
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Baisez A, Bach JM, Leon C, Parouty T, Terrade R, Hoffmann M, Laffaille P. Migration delays and mortality of adult Atlantic salmon Salmo salar en route to spawning grounds on the River Allier, France. ENDANGER SPECIES RES 2011. [DOI: 10.3354/esr00384] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Caquard M, Ferret-Bernard S, Haurogné K, Ouary M, Allard M, Jégou D, Bach JM, Lieubeau B. Diabetes acceleration by cyclophosphamide in the non-obese diabetic mouse is associated with differentiation of immunosuppressive monocytes into immunostimulatory cells. Immunol Lett 2010; 129:85-93. [DOI: 10.1016/j.imlet.2010.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 01/05/2010] [Accepted: 01/28/2010] [Indexed: 11/17/2022]
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Delisle JC, Martignat L, Dubreil L, Saï P, Bach JM, Louzier V, Bösch S. Pdx-1 or Pdx-1-VP16 protein transduction induces beta-cell gene expression in liver-stem WB cells. BMC Res Notes 2009; 2:3. [PMID: 19134185 PMCID: PMC2637887 DOI: 10.1186/1756-0500-2-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2008] [Accepted: 01/09/2009] [Indexed: 12/21/2022] Open
Abstract
Background Pancreatic duodenal homeobox-1 (Pdx-1) or Pdx-1-VP16 gene transfer has been shown to induce in vitro rat liver-stem WB cell conversion into pancreatic endocrine precursor cells. High glucose conditions were necessary for further differentiation into functional insulin-producing cells. Pdx-1 has the ability to permeate different cell types due to an inherent protein transduction domain (PTD). In this study, we evaluated liver-to-pancreas conversion of WB cells following Pdx-1 or Pdx-1-VP16 protein transduction. Findings WB cells were grown in high glucose medium containing Pdx-1 or Pdx-1-VP16 recombinant proteins for two weeks. β-like cell commitment was analysed by RT-PCR of pancreatic endocrine genes. We found that WB cells in high glucose culture spontaneously express pancreatic endocrine genes (Pdx-1, Ngn3, Nkx2.2, Kir6.2). Their further differentiation into β-like cells expressing genes related to endocrine pancreas development (Ngn3, NeuroD, Pax4, Nkx2.2, Nkx6.1, Pdx-1) and β-cell function (Glut-2, Kir6.2, insulin) was achieved only in the presence of Pdx-1(-VP16) protein. Conclusion These results demonstrate that Pdx-1(-VP16) protein transduction is instrumental for in vitro liver-to-pancreas conversion and is an alternative to gene therapy for β-cell engineering for diabetes cell therapy.
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Delisle JC, Martignat L, Bach JM, Bösch S, Louzier V. Bipotential mouse embryonic liver (BMEL) cells spontaneously express Pdx1 and Ngn3 but do not undergo further pancreatic differentiation upon Hes1 down-regulation. BMC Res Notes 2008; 1:136. [PMID: 19108739 PMCID: PMC2649931 DOI: 10.1186/1756-0500-1-136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Accepted: 12/24/2008] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Liver-to-pancreas conversion offers new possibilities for beta-cell engineering for type 1 diabetes therapy. Among conceivable sources of liver cells, we focused on BMEL cells. These untransformed mouse embryonic liver cells have been reproducibly isolated from different inbred mice strains and have the potential to differentiate into hepatocytes and cholangiocytes in vitro and in vivo. FINDINGS Strikingly, we find here that adherent BMEL cells display functional similarities with multipotent pancreatic precursor cells, namely Pdx1 and Ngn3 expression, and further express Hnf6 in floating aggregate culture. Hes1, a direct repressor of Ngn3 and pancreatic endocrine commitment, is expressed in adherent BMEL cells and decreases with time in aggregate culture. However, Hes1 decrease fails to initiate activation of late-stage pancreatic endocrine transcription factors. CONCLUSION Here we report that BMEL cells present features of pancreatic endocrine progenitor cells. In the field of diabetes research, BMEL cells are of potential interest for the study of inductive signals critical for in vitro beta-cell maturation in-liver-to-pancreas conversion.
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Martinuzzi E, Novelli G, Scotto M, Blancou P, Bach JM, Chaillous L, Bruno G, Chatenoud L, van Endert P, Mallone R. The frequency and immunodominance of islet-specific CD8+ T-cell responses change after type 1 diabetes diagnosis and treatment. Diabetes 2008; 57:1312-20. [PMID: 18305140 DOI: 10.2337/db07-1594] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Islet-reactive CD8(+) T-cells play a key role in the pathogenesis of type 1 diabetes in the NOD mouse. The predominant T-cell specificities change over time, but whether similar shifts also occur after clinical diagnosis and insulin treatment in type 1 diabetic patients is unknown. RESEARCH DESIGN AND METHODS We took advantage of a recently validated islet-specific CD8(+) T-cell gamma-interferon enzyme-linked immunospot (ISL8Spot) assay to follow responses against preproinsulin (PPI), GAD, insulinoma-associated protein 2 (IA-2), and islet-specific glucose-6-phosphatase catalytic subunit-related protein (IGRP) epitopes in 15 HLA-A2(+) adult type 1 diabetic patients close to diagnosis and at a second time point 7-16 months later. RESULTS CD8(+) T-cell reactivities were less frequent at follow-up, as 28.6% of responses tested positive at type 1 diabetes diagnosis vs. 13.2% after a median of 11 months (P = 0.003). While GAD and IA-2 autoantibody (aAb) titers were unchanged in 75% of cases, the fraction of patients responding to PPI and/or GAD epitopes by ISL8Spot decreased from 60-67 to 20% (P < 0.02). The previously subdominant IA-2(206-214) and IGRP(265-273) peptides were newly targeted, thus becoming the immunodominant epitopes. CONCLUSIONS Shifts both in frequency and in immunodominance of CD8(+) T-cell responses occur more rapidly than do changes in aAb titers. These different kinetics may suggest complementary clinical applications for T-cell and aAb measurements.
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Énée E, Martinuzzi E, Blancou P, Bach JM, Mallone R, van Endert P. Equivalent Specificity of Peripheral Blood and Islet-Infiltrating CD8+ T Lymphocytes in Spontaneously Diabetic HLA-A2 Transgenic NOD Mice. J Immunol 2008; 180:5430-8. [DOI: 10.4049/jimmunol.180.8.5430] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Esterhuyse KGF, Louw DA, Bach JM. Post-traumatic stress disorder and exposure to violence among Venda and northern Sotho adolescents. Health SA 2007. [DOI: 10.4102/hsag.v12i2.250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
In this study, two research questions were posed. In the first place, this study investigated the levels of exposure to violence among the adolescents as a total group (Venda- and Northern Sotho-speaking), as well as the exposure levels of the two ethnic groups.
Opsomming
Twee navorsingsvrae is in hierdie studie gestel. Eerstens het hierdie studie ondersoek ingestel na die vlakke van blootstelling aan geweld onder die groep adolessente as geheel (Venda- en Noord-Sotho-sprekers), asook na die blootstellingsvlakke van die twee etniese groepe.
*Please note: This is a reduced version of the abstract. Please refer to PDF for full text.
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Blancou P, Mallone R, Martinuzzi E, Sévère S, Pogu S, Novelli G, Bruno G, Charbonnel B, Dolz M, Chaillous L, van Endert P, Bach JM. Immunization of HLA Class I Transgenic Mice Identifies Autoantigenic Epitopes Eliciting Dominant Responses in Type 1 Diabetes Patients. J Immunol 2007; 178:7458-66. [PMID: 17513797 DOI: 10.4049/jimmunol.178.11.7458] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Type 1 diabetes (T1D) results from the autoimmune destruction of pancreatic beta cells. CD8(+) T cells have recently been assigned a major role in beta cell injury. Consequently, the identification of autoreactive CD8(+) T cells in humans remains essential for development of therapeutic strategies and of assays to identify aggressive cells. However, this identification is laborious and limited by quantities of human blood samples available. We propose a rapid and reliable method to identify autoantigen-derived epitopes recognized by human CD8(+) T lymphocytes in T1D patients. Human histocompatibility leukocyte Ags-A*0201 (HLA-A*0201) transgenic mice were immunized with plasmids encoding the T1D-associated autoantigens: 65 kDa glutamic acid decarboxylase (GAD) or insulinoma-associated protein 2 (IA-2). Candidate epitopes for T1D were selected from peptide libraries by testing the CD8(+) reactivity of vaccinated mice. All of the nine-candidate epitopes (five for GAD and four for IA-2) identified by our experimental approach were specifically recognized by CD8(+) T cells from newly diagnosed T1D patients (n = 19) but not from CD8(+) T cells of healthy controls (n = 20). Among these, GAD(114-123), GAD(536-545) and IA-2(805-813) were recognized by 53%, 25%, and 42% of T1D patients, respectively.
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Affiliation(s)
- Philippe Blancou
- Immuno-Endocrinology Unité Mixte de Recherche 707, Institut National de la Recherche Agronomique/Ecole Nationale Vétérinaire de Nantes/Université, Nantes, France
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Sévère S, Gauvrit A, Vu AT, Bach JM. CD8+ T lymphocytes specific for glutamic acid decarboxylase 90–98 epitope mediate diabetes in NODSCID mouse. Mol Immunol 2007; 44:2950-60. [PMID: 17336387 DOI: 10.1016/j.molimm.2007.01.008] [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] [Received: 11/15/2006] [Revised: 12/21/2006] [Accepted: 01/05/2007] [Indexed: 10/23/2022]
Abstract
During the past decade, glutamic acid decarboxylase (GAD) has been considered a crucial beta-cell autoantigen involved in type 1 diabetes in the NOD mouse and human. Recently, the etiological role of GAD has remained controversy. In the NOD mouse, some previous studies argued in favor of a regulatory role for GAD-specific CD4+ T cells, and no diabetogenic CD8+ T cells specific for GAD have been identified so far, discrediting the importance of GAD in beta-cell injury. Here, we identified, in the NOD model, a relevant GAD CD8+ T cell epitope (GAD(90-98)) using immunization with a plasmid encoding GAD, a protocol relying on in vivo processing of peptides from the autoantigenic protein. In pancreatic lymph nodes of naïve female NOD mice, CD8+ T lymphocytes recognizing GAD(90-98) peptide were detected during the initial phase of invasive insulitis (between 4 and 8 weeks of age), suggesting an important role for these cells in the first stage of the disease. GAD(90-98) specific CD8+ lymphocytes lysed efficiently islet cells in vitro and transferred diabetes into NOD(SCID) mice (100%). Finally, diabetes was accelerated greatly in 3-week-old female NOD mice injected i.p. with GAD(90-98), strengthening the role of GAD-specific CTLs in diabetes pathogenesis.
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Affiliation(s)
- Sabine Sévère
- Immuno-endocrinology Unit, ENVN/INRA/University, Atlanpôle-La Chantrerie, BP 40706, 44307 Nantes Cedex 03, France
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Mallone R, Martinuzzi E, Blancou P, Novelli G, Afonso G, Dolz M, Bruno G, Chaillous L, Chatenoud L, Bach JM, van Endert P. CD8+ T-cell responses identify beta-cell autoimmunity in human type 1 diabetes. Diabetes 2007; 56:613-21. [PMID: 17327428 DOI: 10.2337/db06-1419] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Despite the understanding that type 1 diabetes pathogenesis is mediated by T-cells, detection of these rare lymphocytes remains largely elusive. Suitable T-cell assays are highly needed, since they could offer preclinical diagnoses and immune surrogate end points for clinical trials. Although CD4+ T-cell assays have met with limited success, CD8+ T-cells are increasingly recognized as key actors in the diabetes of the NOD mouse. CD8+ T-cells are likely to play a role also in humans and may provide new markers of beta-cell autoimmunity. Taking advantage of a panel of HLA-A2-restricted beta-cell epitopes derived from preproinsulin, GAD, and islet glucose-6-phosphatase catalytic subunit-related protein (IGRP), we have implemented an islet-specific CD8+ T-cell interferon-gamma enzyme-linked immunospot (ISL8Spot) assay. The ISL8Spot assay is capable of detecting and quantifying beta-cell-reactive CD8+ T-cells directly ex vivo, without any preliminary expansion, using either fresh or frozen samples. Positive ISL8Spot responses separate new-onset diabetic and healthy samples with high accuracy (86% sensitivity, 91% specificity), using as few as five immunodominant epitopes. Moreover, sensitivity reaches 100% when the ISL8Spot assay is complemented by antibody determinations. Combination of CD8+ T-cell measurements with immune intervention strategies may open new avenues toward type 1 diabetes prediction and prevention.
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Affiliation(s)
- Roberto Mallone
- INSERM U580, Hôpital Necker, 161 rue de Sèvres, 75743 Paris Cedex 15, France.
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Abstract
Type 1 diabetes mellitus (T1DM) results from the destruction of beta cells by autoantigen-specific T cells. In the non-obese diabetic (NOD) mouse model, CD8+ T cells play an essential role in both the initial triggering of insulitis and its destructive phase, and proinsulin (PI) is one of the dominant target antigens (Ags). However, little is known about the beta cell epitopes presented by HLA class I molecules and recognized by human CD8+ T cells. We and other groups recently applied reverse immunology approaches to identify HLA class I-restricted PI epitopes. To establish an inventory of potential naturally processed epitopes, whole human PI or the transitional region between the B-chain and C-peptide were digested with purified proteasome complexes. By combining proteasome digestion data with epitope prediction algorithms, candidate epitopes restricted by HLA-A2.1 and other HLA class I molecules were identified. We validated immunogenicity and natural processing of the identified PI epitopes in HLA-A2.1-transgenic mice, while others demonstrated recognition of multiple PI epitopes by CD8+ T cells from T1DM and healthy subjects in the context of different HLA class I molecules. These results demonstrate the power of reverse immunology strategies for epitope discovery. DNA vaccination of HLA-transgenic mice may be another rapid and efficient reverse immunology approach to map additional epitopes derived from other T1DM Ags, such as IA-2 and glutamic acid decarboxylase 65 (GAD 65). Transfer of this information to Elispot- and MHC tetramer-based assay formats should allow to reliably detect and characterize autoreactive CD8+ T cell responses in T1DM, and may open new avenues for early T1DM diagnosis and immune intervention.
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Affiliation(s)
- Peter van Endert
- INSERM U580, Hôpital Necker, 161 rue de Sèvres, 75015 Paris, France.
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Kadri N, Potiron N, Ouary M, Jegou D, Gouin E, Bach JM, Lieubeau B. Fetal calf serum-primed dendritic cells induce a strong anti-fetal calf serum immune response and diabetes protection in the non-obese diabetic mouse. Immunol Lett 2006; 108:129-36. [PMID: 17196260 DOI: 10.1016/j.imlet.2006.11.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [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: 08/01/2006] [Revised: 11/20/2006] [Accepted: 11/26/2006] [Indexed: 11/22/2022]
Abstract
In recent years, several investigators have shown that transfer of dendritic cells (DC) prevents diabetes development in non-obese diabetic (NOD) mice. Accumulating evidences showing that DC cultured in medium containing fetal calf serum (FCS) can induce a dominant unspecific immune response in tumor models after i.v. injection prompted us to investigate if the protecting effect of DC on diabetes development in NOD mice might be supported by the induction of an anti-FCS immune response in recipient mice. Five-week-old NOD mice were injected i.v. with FCS-cultured bone marrow-derived DC or PBS as control. Levels of anti-FCS and anti-bovine serum albumin (BSA) antibodies were measured in the serum of recipient mice. Anti-FCS cellular immune responses were also analysed after a single DC injection using in vitro proliferation of splenocytes either in RPMI supplemented with FCS, AIMV-BSA or RPMI containing autologous mouse serum or BSA as a read out. DC injection prevented diabetes development in NOD mice and high titers of anti-FCS and anti-BSA antibodies were detected in serum of all DC-injected mice. Besides, splenocytes isolated from DC-injected mice proliferated vigorously in the presence of bovine proteins in contrast to splenocytes isolated from control mice but removing bovine proteins abrogated the high level of proliferation of those splenocytes suggesting that lymphocytes have been primed against bovine proteins in vivo after DC injection. All together, our data show that DC transfer induced cellular and humoral anti-FCS immune responses in recipient NOD mice suggesting that the protective effect of DC relies on their unspecific immunostimulatory effects.
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Affiliation(s)
- N Kadri
- Immuno-endocrinology Unit, INRA U707, F-44307 Nantes, France
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Haurogné K, Bach JM, Lieubeau B. Easy and rapid method of zygosity determination in transgenic mice by SYBR Green real-time quantitative PCR with a simple data analysis. Transgenic Res 2006; 16:127-31. [PMID: 17080302 DOI: 10.1007/s11248-006-9024-4] [Citation(s) in RCA: 16] [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: 05/24/2006] [Accepted: 06/19/2006] [Indexed: 10/24/2022]
Abstract
Establishment and maintenance of transgenic mouse strains require being able to distinguish homozygous from heterozygous animals. To date, the developed real-time quantitative PCR techniques are often complicated, time-consuming and expensive. Here, we propose a very easy and rapid method with a simple data analysis to determine zygosity in transgenic mice. We show that the real-time quantitative PCR using SYBR Green fluorescent dye can be applied to discriminate two-fold differences in copy numbers of the transgene. Our procedure has to fit only three simple requirements: (1) to design primers capable of detecting one Ct difference for two-fold differences in DNA amounts (2) to measure genomic DNA concentrations accurately and (3) to have a reference animal of known zygosity in each run. Then, if the Ct values for the control gene are similar in all samples, we are able to compare directly the Ct values for the transgene in every sample, and so, to deduce the zygosity status of each mouse relative to the reference animal. This method is really simple and reliable, and it may be valuable as a rapid screening tool for zygosity status in transgenic animals.
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Affiliation(s)
- Karine Haurogné
- Immuno-endocrinology Unit, INRA U707, F-44307, Nantes, France
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Joussemet B, Vu AT, Sai P, Bach JM. Gene-gun biolistic immunization encoding glutamic acid decarboxylase: a model for studying Langerhans cell abnormalities and mimicry in the nonobese diabetic mouse. Ann N Y Acad Sci 2006; 1051:613-25. [PMID: 16127002 DOI: 10.1196/annals.1361.106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/12/2022]
Abstract
Plasmid-DNA gene-gun immunization may be an efficient approach for investigating the role of skin dendritic cells (DCs) in type 1 diabetes (T1D) pathogenesis and the significance of the presentation of peptides that mimic autoantigenic epitopes in aggravating or modulating the autoimmune reaction. Gene-gun immunization has been described as producing long-lasting immune responses elicited by skin DCs, especially Langerhans cells (LCs). Therefore, we tested the immune response and diabetes modulation in nonobese diabetic (NOD) mice and in control BALB/c mice, by gene-gun administration of plasmid-DNA encoding (1) human 65 kDa glutamic acid decarboxylase (hGAD65) mimicking the crucial mouse autoantigen GAD65 (similarity of 95.7%) or (2) beta-galactosidase (betaGAL) as a negative control. Expression of GAD and betaGAL in skin of pc-GAD- and pc-LacZ-injected mice, respectively, was confirmed. It was surprising that both pc-LacZ-injected BALB/c and NOD mice exhibited a betaGAL-specific Th1 immune response: spleen cells of pc-LacZ mice proliferated specifically to betaGAL (P < 10(-4)) and secreted significant amounts of IFNgamma (P < 10(-4)). pc-LacZ mice also developed a betaGAL-specific Th1-related (IgG2a/2c) and Th2-related (IgG1) humoral response. Although pc-GAD BALB/c mice showed Th2-related GAD-specific IgG1 production and a significant secretion of IL4 (P < .03), pc-GAD NOD mice did not generate either an antibody response or a T cell response specific to GAD. Moreover, gene-gun immunization encoding hGAD65 did not clearly modulate diabetes onset in NOD mice. This absence of detectable GAD-specific response may implicate skin DC deficiencies in NOD mice. The gene-gun technique could thus provide an interesting model for studying skin DC abnormalities in NOD mice and their potential implication of presenting mimetic peptides that modulate the autoimmune response in T1D.
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Affiliation(s)
- Béatrice Joussemet
- Immuno-Endocrinology Unit, ENVN/INRA/University, ENVN, Atlanpôle-La Chantrerie, BP 40706, 44307 Nantes cedex 03, France
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Jouvion G, Abadie J, Bach JM, Roux F, Miclard J, Deschamps JY, Guigand L, Saï P, Wyers M. Lymphocytic insulitis in a juvenile dog with diabetes mellitus. Endocr Pathol 2006; 17:283-90. [PMID: 17308365 DOI: 10.1385/ep:17:3:283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/1999] [Revised: 11/30/1999] [Accepted: 11/30/1999] [Indexed: 11/11/2022]
Abstract
Autoimmune diabetes has never been described in a juvenile dog, whereas serological evidence has established its development in adult dogs. Diabetes mellitus was diagnosed in a 3-mo-old Donge de Bordeaux dog suffering from persistent hyperglycemia and concurrent insulinopenia. Histological analysis of the pancreas revealed inflammatory lesions in 40% of the islets of Langerhans, with infiltration predominantly by T lymphocytes (more than 90%), either at the edge (peri-insulitis: 10%) or in the islets (insulitis: 30%). The remaining 60% of the islets showed a marked atrophy due to massive beta cell loss with no loss of alpha cells. This pattern is quite similar to that observed in humans in which a characteristic insulitis containing high numbers of T lymphocytes is found in 20% of the islets at diabetes diagnosis. By contrast, in rodent models, nearly 70% of the islets of Langerhans show inflammation at diagnosis and macrophages and dendritic cells predominate in the inflammatory lesions. This is the first report of lymphocytic insulitis in a juvenile dog exhibiting diabetes mellitus. Our observations suggest an autoimmune origin for the disease in this dog that is similar to human type 1 diabetes mellitus, for which there is no accurate spontaneous large animal model.
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Affiliation(s)
- G Jouvion
- UMR 703 INRA-ENVN, Department of Pathology, National Veterinary School of Nantes, France
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Branger C, Chatrenet B, Gauvrit A, Aviat F, Aubert A, Bach JM, André-Fontaine G. Protection against Leptospira interrogans sensu lato challenge by DNA immunization with the gene encoding hemolysin-associated protein 1. Infect Immun 2005; 73:4062-9. [PMID: 15972494 PMCID: PMC1168576 DOI: 10.1128/iai.73.7.4062-4069.2005] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The use of DNA constructs encoding leptospiral proteins is a promising new approach for vaccination against leptospirosis. In previous work we determined that immunization with hemolysis-associated protein 1 (Hap1) (LipL32) expressed by adenovirus induced significant protection against a virulent Leptospira challenge in gerbils. To avoid the use of the adenovirus vector, we checked for clinical protection against lethal challenge by DNA vaccination. A DNA vaccine expressing Hap1 was designed to enhance the direct gene transfer of this protein into gerbils. A challenge was performed 3 weeks after the last immunization with a virulent strain of serovar canicola. Our results show that the cross-protective effect with pathogenic strains of Leptospira, shared by Hap1, could be mediated by the DNA plasmid vector. This finding should facilitate the design and development of a new generation of vaccines against bacteria, particularly Leptospira interrogans sensu lato.
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Affiliation(s)
- C Branger
- Leptospira Medical and Molecular Bacteriology Unit, Ecole Nationale Vétérinaire de Nantes, France
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Ibisch C, Pradal G, Bach JM, Lieubeau B. Functional canine dendritic cells can be generated in vitro from peripheral blood mononuclear cells and contain a cytoplasmic ultrastructural marker. J Immunol Methods 2005; 298:175-82. [PMID: 15847807 DOI: 10.1016/j.jim.2005.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 08/16/2004] [Revised: 12/10/2004] [Accepted: 02/16/2005] [Indexed: 01/06/2023]
Abstract
For physiological and practical reasons the dog is a large animal model used increasingly to study the pathogenesis of human diseases and new therapeutic approaches, in particular for immune disorders. However, some immunological resources are lacking in this model, especially concerning dendritic cells. The aim of our study was to develop an efficient method to generate dendritic cells (DC) in vitro from dog peripheral blood mononuclear cells (PBMC) and to characterize their functional, structural and ultrastructural properties. PBMC were cultured in vitro with IL-4 and GM-CSF. After 1 week of culture, a great proportion of non-adherent cells displayed typical cytoplasmic processes, as evidenced both by optical and electron microscopy. Cytometric analysis revealed the presence of 41.7+/-24.6% CD14+ cells expressing both CD11c and MHC class II molecules. Allogeneic mixed lymphocyte reactions confirmed the ability of these cultures to stimulate the proliferation of allogeneic lymphocytes as already reported as a characteristic of DC in other species. In addition, we describe for the first time the presence in canine DC of cytoplasmic periodic microstructures (PMS) that could represent ultrastructural markers of canine DC. In conclusion, our study provides an easy method to generate DC from PBMC in sufficient numbers for immunological in vitro investigations in dogs, a pre-clinical model for many human diseases.
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Affiliation(s)
- C Ibisch
- Immuno-Endocrinology Unit, ENVN/INRA/University, ENVN, Atlanpole, la Chantrerie, BP 40706, F-44307 Nantes Cedex 03, France
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Ferret-Bernard S, Saï P, Bach JM. In vitro induction of inhibitory macrophage differentiation by granulocyte-macrophage colony-stimulating factor, stem cell factor and interferon-gamma from lineage phenotypes-negative c-kit-positive murine hematopoietic progenitor cells. Immunol Lett 2004; 91:221-7. [PMID: 15019293 DOI: 10.1016/j.imlet.2003.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 09/22/2003] [Revised: 12/05/2003] [Accepted: 12/18/2003] [Indexed: 10/26/2022]
Abstract
CD11b+Gr-1+ inhibitory macrophages (iMacs) were implicated in profound depression of T cell functions sometimes observed during cyclophosphamide treatments and overwhelming infections, through a secretion of nitric oxide (NO). Myeloid origin and maturation stages of iMacs are still unknown. As tumor necrosis factor-alpha (TNF-alpha) and interferon-gamma (IFN-gamma) contributed crucially to the activation of inducible NO synthase (iNOS) gene transcription and to the differentiation of macrophages, we tested their roles in the induction of iMacs differentiation from bone marrow hematopoietic progenitor cells (HPC) of uncompromised mice. Lineage phenotypes-negative (lin)) c-kit+ cells of Balb/c mice were cultured 6 days with granulocyte-macrophage colony-stimulating factor (GM-CSF), stem cell factor (SCF, c-kit ligand) in presence or not of TNF-alpha or IFN-gamma. CD11b+Gr-1+ cells only derived in presence of [GM-CSF + SCF + TNF-alpha] or [GM-CSF + SCF + IFN-gamma] could express iNOS upon in vitro stimulation with [IFN-gamma + TNF-alpha] or [IFN-gamma + LPS] known to boost iNOS expression in murine macrophages. However, whereas [GM-CSF + SCF + TNF-alpha] induced only weakly iMacs generation and contributed also to the differentiation of CD11b+Gr-1-CD11c+ myeloid dendritic cells, [GM-CSF + SCF + IFN-gamma] induced exclusively and importantly iMacs differentiation. Moreover [GM-CSF + SCF + IFN-gamma]-generated iMacs were more mature than [GM-CSF + SCF + TNF-alpha]-derived iMacs since IFN-gamma increased more strongly CD11b+Gr-1+ cells expressing Ly-6C and generated lesser cells expressing MHC class II and CD86 molecules. Finally [GM-CSF + SCF + IFN-gamma]-generated CD11b+ cells showing a powerful suppressive activity on T cell proliferations, correlated with NO secretion. In conclusion, our study showed, for the first time, that IFN-gamma induced very efficiently the differentiation of functional iMacs from lin- c-kit+ murine HPC in vitro, and indicated clearly that iMacs progenitors may be present in bone marrow of naïve mice.
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Affiliation(s)
- Stéphanie Ferret-Bernard
- Immuno-endocrinology Unit, ENVN/INRA/University, ENVN, Atlanpole-La Chantrerie, BP 40706, 44307 Nantes Cedex 03, France
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Abstract
The notion that mimicry between a self and a microbial peptide antigen can trigger or aggravate autoimmune pathology remains a popular hypothesis in autoimmunity research. Tremendous recent progress in our understanding of the interface between the T cell receptor (TCR) and peptide/MHC complexes has revealed a vast potential for degenerate recognition of numerous structurally similar pMHC complexes by each T lymphocyte. Moreover, functional and structural studies have confirmed that structural similarity between unrelated pMHC complexes is frequently sufficient for recognition by a single TCR. However, despite clear evidence that vaccination with mimetic microbial antigens has the potential to activate autoreactive T cells, crucial evidence for triggering of autoimmunity by mimetic sequences in natural pathogens is wanting. Antigen spreading, i.e. the fact that the number of self antigens targeted by a chronic autoimmune response tends to increase with its duration, does not facilitate the task of proving initial triggering, or subsequent acceleration, of autoimmune conditions by mimetic microbial antigens. Moreover, considering that activation rather than presence of autoreactive T cells is the hallmark of autoimmune disease, the creation of an environment resulting in failure of tolerance and regulatory mechanisms, rather than emergence of novel microbial antigenic determinants, may well be at the root of autoimmunity. Based on these considerations, we contend that the mimicry concept remains largely hypothetical, and that novel carefully designed animal models are needed to make a convincing case for a role of mimicry in autoimmune diseases.
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Alizadeh RI, Eckhoff DG, Samson MM, Doucette TK, Hogan CA, Bach JM. Axial and rotational alignment of the leg. Biomed Sci Instrum 2004; 40:290-6. [PMID: 15133973] [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: 04/29/2023]
Abstract
The axial and rotational alignments of the lower extremity are commonly referenced independently, with minimal research on whether coexistent axial and rotational malalignment cause pathologies. The present study analyzed whether a correlation exists between the axial and rotational alignments of the leg. The methodology to measure both alignments was adapted for computer tomography. Fifty patients were analyzed at five reference images to determine axial and rotational alignment. The reference images included the femoral head, the femoral shaft (at the level of the lesser trochanter), the distal femur, the proximal tibia, and the ankle joint. Axial alignment was calculated by using horizontal and vertical measurements of the location of the femoral head, the distal femur, and the ankle joint. Rotational alignments of femur, knee, and tibia were calculated using four angles: proximal femoral, distal femoral, proximal tibial, and ankle joint angles defined relative to a fixed reference. Pearson correlation analysis between axial alignment and the three mentioned rotational alignments were calculated. The correlation coefficient values ranged between -0.15-0.07 when comparing axial to rotational alignment, indicating that a week correlation exists between the two alignments. Though these results were derived using highly reproducible methods, the hypothesis of an existing correlation between the axial and rotational alignments of the leg was rejected. These findings allow for an improved understanding of lower extremity mechanics, which merit importance when considering pathologies of the leg and the surgical techniques that could ultimately benefit patients suffering from these pathologies.
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Affiliation(s)
- R I Alizadeh
- University of Colorado Health Sciences Center, Department of Orthopaedics, Colorado School of Mines, Division of Engineering, USA
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Affiliation(s)
- D G Eckhoff
- University of Colorado Health Sciences Center at Fitzsimons, Box 6508, Mail Stop F-432, Aurora, CO 80045-0508, USA
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