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Sendo S, Machado CRL, Boyle DL, Benschop RJ, Perumal NB, Choi E, Wang W, Firestein GS. Dysregulated NUB1 and neddylation enhances rheumatoid arthritis fibroblast-like synoviocyte inflammatory responses. Arthritis Rheumatol 2024. [PMID: 38566346 DOI: 10.1002/art.42856] [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] [Received: 07/17/2023] [Revised: 03/21/2024] [Accepted: 03/16/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVE Fibroblast-like synoviocytes (FLS) contribute to the pathogenesis of rheumatoid arthritis (RA), in part due to activation of the pro-inflammatory transcription factor NF-κB. Neddylation is modulated by the negative regulator of ubiquitin-like proteins-1 (NUB1). We determined whether NUB1 and neddylation are aberrant in RA FLS thereby contributing to their aggressive phenotype. METHODS RA or osteoarthritis (OA) FLS were obtained from arthroplasty synovia. RT-qPCR and Western blot analysis assessed gene and protein expression, respectively. NUB1 was overexpressed using an expression vector. NF-κB activation was assessed by stimulating FLS with IL-1β. Neddylation inhibitor (MLN4924) and proteasome inhibitor were used in migration and gene expression assays. MLN4924 was used in the K/BxN serum transfer arthritis model. RESULTS Enhanced H3K27ac and H3K27me3 peaks were observed in the NUB1 promoter in OA FLS compared with RA FLS. NUB1 was constitutively expressed by FLS but induction by IL-1β was significantly greater in OA FLS. The ratio of neddylated CUL1 to non-neddylated CUL1 was lower in OA FLS than RA FLS. NUB1 overexpression decreased NF-κB nuclear translocation and IL-6 mRNA in IL-1β-stimulated RA FLS. MLN4924 decreased CUL1 neddylation, NF-κB nuclear translocation and IL-6 mRNA in IL-1β-stimulated RA FLS. MLN4924 significantly decreased arthritis severity in K/BxN serum-transfer arthritis. CONCLUSION CUL1 neddylation and NUB1 induction is dysregulated in RA, which increases FLS activation. Inhibition of neddylation is an effective therapy in an animal model of arthritis. These data suggest that neddylation system contributes to the pathogenesis of RA and that regulation of neddylation could be a novel therapeutic approach.
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Affiliation(s)
- Sho Sendo
- Division of Rheumatology, Allergy and Immunology, University of California, , San Diego School of Medicine, La Jolla, CA, 92093, USA
| | - Camilla R L Machado
- Division of Rheumatology, Allergy and Immunology, University of California, , San Diego School of Medicine, La Jolla, CA, 92093, USA
| | - David L Boyle
- Division of Rheumatology, Allergy and Immunology, University of California, , San Diego School of Medicine, La Jolla, CA, 92093, USA
| | | | - Narayanan B Perumal
- Eli Lilly and Company, Indianapolis, IN, 46285, USA
- Eli Lilly and Company, San Diego, CA, 92121, USA
| | - Eunice Choi
- Department of Chemistry and Biochemistry, University of California, , San Diego, La Jolla, CA, 92093, USA
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of California, , San Diego, La Jolla, CA, 92093, USA
- Department of Cellular and Molecular Medicine, University of California, , San Diego, La Jolla, CA, 92093, USA
| | - Gary S Firestein
- Division of Rheumatology, Allergy and Immunology, University of California, , San Diego School of Medicine, La Jolla, CA, 92093, USA
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Van Espen B, Prideaux EB, Wilson AR, Machado CRL, Sendo S, Parker J, Seumois G, Sacchetti C, Belongia AC, Perumal NB, Vijayanand P, Linnik MD, Benschop RJ, Wang W, Bottini N, Firestein GS, Stanford SM. Laser capture microscopy (LCM)-RNAseq for topological mapping of synovial pathology during rheumatoid arthritis. Arthritis Rheumatol 2024. [PMID: 38556917 DOI: 10.1002/art.42853] [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] [Received: 06/24/2022] [Revised: 02/21/2024] [Accepted: 03/11/2024] [Indexed: 04/02/2024]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) is an autoimmune disease in which the joint lining, or synovium, becomes highly inflamed and majorly contributes to disease progression. Understanding pathogenic processes in RA synovium is critical for identifying therapeutic targets. We performed laser capture microscopy (LCM) followed by RNA sequencing (LCM-RNAseq) to study regional transcriptomes throughout RA synovium. METHODS Synovial lining, sublining, and vessels were captured by LCM from seven RA and seven osteoarthritis (OA) patients. RNAseq was performed on RNA extracted from captured tissue. Principal component analysis (PCA) was performed on the sample set by disease state. Differential expression analysis was performed between disease states based on log2 fold-change and q-value parameters. Pathway analysis was performed using Reactome Pathway Database on differentially expressed genes (DEGs) between disease states. Significantly enriched pathways in each synovial region were selected based on false discovery rate (FDR). RESULTS RA and OA transcriptomes were distinguishable by PCA. Pairwise comparisons of synovial lining, sublining, and vessels between RA and OA revealed substantial differences in transcriptional patterns throughout the synovium. Hierarchical clustering of pathways based on significance revealed a pattern of association between biological function and synovial topology. Analysis of pathways uniquely enriched in each region revealed distinct phenotypic abnormalities. As examples, RA lining was marked by anomalous immune cell signaling, RA sublining by aberrant cell cycle, and RA vessels by alterations in heme scavenging. CONCLUSION LCM-RNAseq confirms reported transcriptional differences between RA and OA synovium and provides evidence supporting a relationship between synovial topology and molecular anomalies in RA.
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Affiliation(s)
- Benjamin Van Espen
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | - E Barton Prideaux
- Department of Chemistry and Biochemistry; Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Andrew R Wilson
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | - Sho Sendo
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | | | | | - Anna C Belongia
- Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | - Pandurangan Vijayanand
- Department of Medicine, University of California, San Diego, La Jolla, CA
- La Jolla Institute for Immunology, La Jolla, CA
| | | | | | - Wei Wang
- Department of Chemistry and Biochemistry; Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Nunzio Bottini
- Department of Medicine, University of California, San Diego, La Jolla, CA
- Kao Autoimmunity Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Gary S Firestein
- Department of Medicine, University of California, San Diego, La Jolla, CA
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Steere B, Beidler C, Martin A, Bright S, Kikly K, Benschop RJ. Generation and Characterization of Mirikizumab, a Humanized Monoclonal Antibody Targeting the p19 Subunit of IL-23. J Pharmacol Exp Ther 2023; 387:180-187. [PMID: 37714687 DOI: 10.1124/jpet.122.001512] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 08/09/2023] [Accepted: 08/15/2023] [Indexed: 09/17/2023] Open
Abstract
Interleukin (IL)-23 exists as a heterodimer consisting of p19 and p40 and is a key cytokine for promoting inflammatory responses in a variety of target organs. IL-23 plays a key role in the differentiation and maintenance of T helper 17 cells, and deregulation of IL-23 can result in autoimmune pathologies of the skin, lungs, and gut. This study describes the generation and characterization of mirikizumab (miri), a humanized IgG4 monoclonal antibody directed against the p19 subunit of IL-23. Miri binds human and cynomolgus monkey IL-23 with high affinity and binds rabbit IL-23 weakly but does not bind to rodent IL-23 or the other IL-23 family members IL-12, IL-27, or IL-35. Miri effectively inhibits the interaction of IL-23 with its receptor, and potently blocks IL-23-induced IL-17 production in cell-based assays while preserving the function of IL-12. In both local and systemic in vivo mouse models, miri blocked IL-23-induced keratin mRNA or IL-17 production, respectively. These data provide a comprehensive preclinical characterization of miri, for which efficacy and safety have been demonstrated in human clinical trials for psoriasis, ulcerative colitis, and Crohn's disease. SIGNIFICANCE STATEMENT: This article describes the generation and characterization of mirikizumab, a high affinity, neutralizing IgG4 variant monoclonal antibody that is under development for the treatment of ulcerative colitis and Crohn's disease. Neutralization of interleukin (IL)-23 is achieved by preventing the binding of IL-23 p19 subunit to the IL-23 receptor and does not affect the IL-12 pathway.
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Affiliation(s)
- Boyd Steere
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Catherine Beidler
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Andrea Martin
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Stu Bright
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Kristy Kikly
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
| | - Robert J Benschop
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana
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Schroderus AM, Poorbaugh J, McElyea S, Beasley S, Zhang L, Näntö-Salonen K, Rintamäki R, Pihlajamäki J, Knip M, Veijola R, Toppari J, Ilonen J, Benschop RJ, Kinnunen T. Evaluation of plasma IL-21 as a potential biomarker for type 1 diabetes progression. Front Immunol 2023; 14:1157265. [PMID: 37415982 PMCID: PMC10321755 DOI: 10.3389/fimmu.2023.1157265] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/05/2023] [Indexed: 07/08/2023] Open
Abstract
IL-21 is a multifunctional cytokine linked with the pathophysiology of several autoimmune diseases, including type 1 diabetes. In this study, our aim was to examine plasma IL-21 levels in individuals at different stages of type 1 diabetes progression. We measured plasma IL-21 levels, as well as levels of other key pro-inflammatory cytokines (IL-17A, TNF-α and IL-6), from 37 adults with established type 1 diabetes and 46 healthy age-matched adult controls, as well as from 53 children with newly diagnosed type 1 diabetes, 48 at-risk children positive for type 1 diabetes-associated autoantibodies and 123 healthy age-matched pediatric controls using the ultrasensitive Quanterix SiMoA technology. Adults with established type 1 diabetes had higher plasma IL-21 levels compared to healthy controls. However, the plasma IL-21 levels showed no statistically significant correlation with clinical variables, such as BMI, C-peptide, HbA1c, or hsCRP levels, evaluated in parallel. In children, plasma IL-21 levels were almost ten times higher than in adults. However, no significant differences in plasma IL-21 levels were detected between healthy children, autoantibody-positive at-risk children, and children with newly diagnosed type 1 diabetes. In conclusion, plasma IL-21 levels in adults with established type 1 diabetes were increased, which may be associated with autoimmunity. The physiologically high plasma IL-21 levels in children may, however, reduce the potential of IL-21 as a biomarker for autoimmunity in pediatric subjects.
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Affiliation(s)
- Anna-Mari Schroderus
- Department of Clinical Microbiology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | | | | | | | - Lin Zhang
- Eli Lilly and Company, Indianapolis, IN, United States
| | | | - Reeta Rintamäki
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
| | - Jussi Pihlajamäki
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Mikael Knip
- Tampere Center for Child Health Research, Tampere University Hospital, Tampere, Finland
- Pediatric Research Center, New Children’s Hospital, Helsinki University Hospital, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Riitta Veijola
- PEDEGO Research Unit, Department of Pediatrics, Medical Research Center, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Jorma Toppari
- Department of Pediatrics, Turku University Hospital, Turku, Finland
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, Centre for Population Health Research, University of Turku, Turku, Finland
| | - Jorma Ilonen
- Immunogenetics Laboratory, Institute of Biomedicine, University of Turku, Turku, Finland
| | | | - Tuure Kinnunen
- Department of Clinical Microbiology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- ISLAB Laboratory Centre, Kuopio, Finland
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5
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Okragly AJ, Ryuzoji A, Wulur I, Daniels M, Van Horn RD, Patel CN, Benschop RJ. Binding, Neutralization and Internalization of the Interleukin-13 Antibody, Lebrikizumab. Dermatol Ther (Heidelb) 2023:10.1007/s13555-023-00947-7. [PMID: 37310643 DOI: 10.1007/s13555-023-00947-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/24/2023] [Indexed: 06/14/2023] Open
Abstract
INTRODUCTION IL-13 is the primary upregulated cytokine in atopic dermatitis (AD) skin and is the pathogenic mediator driving AD pathophysiology. Lebrikizumab, tralokinumab and cendakimab are therapeutic monoclonal antibodies (mAb) that target IL-13. METHODS We undertook studies to compare in vitro binding affinities and cell-based functional activities of lebrikizumab, tralokinumab and cendakimab. RESULTS Lebrikizumab bound IL-13 with higher affinity (as determined using surface plasma resonance) and slower off-rate. It was more potent in neutralizing IL-13-induced effects in STAT6 reporter and primary dermal fibroblast periostin secretion assays than either tralokinumab or cendakimab. Live imaging confocal microscopy was employed to determine the mAb effects on IL-13 internalization into cells via the decoy receptor IL-13Rα2, using A375 and HaCaT cells. The results showed that only the IL-13/lebrikizumab complex was internalized and co-localized with lysosomes, whereas IL-13/tralokinumab or IL-13/cendakimab complexes did not internalize. CONCLUSION Lebrikizumab is a potent, neutralizing high-affinity antibody with a slow disassociation rate from IL-13. Additionally, lebrikizumab does not interfere with IL-13 clearance. Lebrikizumab has a different mode of action to both tralokinumab and cendakimab, possibly contributing to the clinical efficacy observed by lebrikizumab in Ph2b/3 AD studies.
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Affiliation(s)
- Angela J Okragly
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA.
| | - Aya Ryuzoji
- BioTechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Isabella Wulur
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Montanea Daniels
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Robert D Van Horn
- Flow Cytometry-Imaging Core Lab, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Chetan N Patel
- BioTechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Robert J Benschop
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285, USA
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6
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Vetrano S, Bouma G, Benschop RJ, Birngruber T, Costanzo A, D’Haens GRAM, Frasca L, Hillenbrand R, Iversen L, Johansen C, Kaser A, Koenen HJPM, Noehammer C, Peyrin-Biroulet L, Raes J, Ricotti L, Rosenstiel P, Satagopam VP, Schreiber S, Vermeire S, Wollenberg A, Weidinger S, Ziemek D, Danese S. ImmUniverse Consortium: Multi-omics integrative approach in personalized medicine for immune-mediated inflammatory diseases. Front Immunol 2022; 13:1002629. [PMID: 36439150 PMCID: PMC9682955 DOI: 10.3389/fimmu.2022.1002629] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/26/2022] [Indexed: 09/22/2023] Open
Abstract
Immune mediated inflammatory diseases (IMIDs) are a heterogeneous group of debilitating, multifactorial and unrelated conditions featured by a dysregulated immune response leading to destructive chronic inflammation. The immune dysregulation can affect various organ systems: gut (e.g., inflammatory bowel disease), joints (e.g., rheumatoid arthritis), skin (e.g., psoriasis, atopic dermatitis), resulting in significant morbidity, reduced quality of life, increased risk for comorbidities, and premature death. As there are no reliable disease progression and therapy response biomarkers currently available, it is very hard to predict how the disease will develop and which treatments will be effective in a given patient. In addition, a considerable proportion of patients do not respond sufficiently to the treatment. ImmUniverse is a large collaborative consortium of 27 partners funded by the Innovative Medicine Initiative (IMI), which is sponsored by the European Union (Horizon 2020) and in-kind contributions of participating pharmaceutical companies within the European Federation of Pharmaceutical Industries and Associations (EFPIA). ImmUniverse aims to advance our understanding of the molecular mechanisms underlying two immune-mediated diseases, ulcerative colitis (UC) and atopic dermatitis (AD), by pursuing an integrative multi-omics approach. As a consequence of the heterogeneity among IMIDs patients, a comprehensive, evidence-based identification of novel biomarkers is necessary to enable appropriate patient stratification that would account for the inter-individual differences in disease severity, drug efficacy, side effects or prognosis. This would guide clinicians in the management of patients and represent a major step towards personalized medicine. ImmUniverse will combine the existing and novel advanced technologies, including multi-omics, to characterize both the tissue microenvironment and blood. This comprehensive, systems biology-oriented approach will allow for identification and validation of tissue and circulating biomarker signatures as well as mechanistic principles, which will provide information about disease severity and future disease progression. This truly makes the ImmUniverse Consortium an unparalleled approach.
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Affiliation(s)
- Stefania Vetrano
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- IBD Unit, Department of Gastroenterology, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Gerben Bouma
- Clinical Pharmacology and Experimental Medicine, GlaxoSmithKline R&D, United Kingdom
| | - Robert J. Benschop
- Immunology and Translation, Eli Lilly and Company, Indianapolis, IN, United States
| | - Thomas Birngruber
- Joanneum Research GmbH, HEALTH - Institute for Biomedicine and Health Sciences, Graz, Austria
| | - Antonio Costanzo
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- Dermatology Unit, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - G. R. A. M. D’Haens
- Department of Gastroenterology and Hepatology, Academisch Medisch Centrum Bij De Universiteit Van Amsterdam, Amsterdam, Netherlands
| | - Loredana Frasca
- Pharmacological Research and Experimental Therapy Unit, Istituto Superiore Di Sanità, Roma, Italy
| | | | - Lars Iversen
- Department of Dermatology, Aarhus Universitetshospital, Aarhus, Denmark
| | | | - Arthur Kaser
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Hans J. P. M. Koenen
- Department of Laboratory Medicine, Laboratory of Medical Immunology, Stichting Radboud Universitair Medisch Centrum, Nijmegen, Netherlands
| | - Christa Noehammer
- Department of Health and Environment, AIT Austrian Institute of Technology GmbH, Vienna, Austria
| | - Laurent Peyrin-Biroulet
- Department of Gastroenterology, Centre Hospitalier Regional Universitaire Nancy, Nancy, France
| | - Jeroen Raes
- Department of Microbiology and Immunology, Vib Vzw, Gent, Belgium
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant’Anna, Pisa, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant’Anna, Pisa, Italy
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian Albrechts University and University Hospital, Kiel, Germany
| | - Venkata P. Satagopam
- Luxembourg Centre for Systems Biomedicine, House of Biomedicine II, University of Luxembourg, Belvaux, Luxembourg
| | - Stefan Schreiber
- Department of Internal Medicine I, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany
| | - Severine Vermeire
- Department of Gastroenterology and Hepatology, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Andreas Wollenberg
- Department of Dermatology, Ludwig-Maximilian-University Munich, Munich, Germany
- Department of Dermatology, Free University Brussels, University Hospital Brussels, Brussels, Belgium
| | - Stephan Weidinger
- Department of Dermatology and Allergy, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Daniel Ziemek
- Worldwide Research and Development, Pfizer Pharma, Berlin, Germany
| | - Silvio Danese
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- Department of Gastroenterology and Endoscopy IRCCS Ospedale San Raffaele, Milan, Italy
- University Vita-Salute San Raffaele, Milan, Italy
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7
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Huhn G, Poorbaugh J, Zhang L, Beasley S, Nirula A, Brothers J, Welbel S, Wilson J, Gillani S, Weber KM, Morack R, Keckler K, Benschop RJ. COVID-19 symptom relationship to antibody response and ACE2 neutralization in recovered health systems employees before and after mRNA BNT162b2 COVID-19 vaccine. PLoS One 2022; 17:e0273323. [PMID: 36083883 PMCID: PMC9462709 DOI: 10.1371/journal.pone.0273323] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/06/2022] [Indexed: 11/18/2022] Open
Abstract
Background
The humoral response to SARS-CoV-2 can provide immunity and prevent reinfection. However, less is known about how the diversity, magnitude, and length of the antibody response after a primary infection is associated with symptoms, post-infection immunity, and post-vaccinated immunity.
Methods
Cook County Health employees provided blood samples and completed an online survey 8–10 weeks after a PCR-confirmed positive SARS-CoV-2 test (pre-vaccinated, N = 41) and again, 1–4 weeks after completion of a 2-dose series mRNA BNT162b2 COVID-19 vaccine (post-vaccinated, N = 27). Associations were evaluated between SARS-CoV-2 antibody titers, participant demographics, and clinical characteristics. Antibody titers and angiotensin-converting enzyme 2 (ACE2) neutralization were compared before and after the mRNA BNT162b2 COVID-19 vaccine.
Results
Antibody titers to the spike protein (ST4), receptor binding domain (RBD), and RBD mutant D614G were significantly associated with anosmia and ageusia, cough, and fever. Spike protein antibody titers and ACE2 neutralization were significantly higher in participants that presented with these symptoms. Antibody titers to the spike protein N-terminal domain (NTD), RBD, and ST4, and ACE2 IC50 were significantly higher in all post-vaccinated participant samples compared to pre-vaccinated participant sample, and not dependent on previously reported symptoms.
Conclusions
Spike protein antibody titers and ACE2 neutralization are associated with the presentation of anosmia and ageusia, cough, and fever after SARS-CoV-2 infection. Symptom response to previous SARS-CoV-2 infection did not influence the antibody response from subsequent vaccination. These results suggest a relationship between infection severity and the magnitude of the immune response and provide meaningful insights into COVID-19 immunity according to discrete symptom presentation.
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Affiliation(s)
- Gregory Huhn
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
- Rush University Medical Center, Chicago, Illinois, United States of America
- * E-mail:
| | - Josh Poorbaugh
- Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Lin Zhang
- Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Stephanie Beasley
- Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Ajay Nirula
- Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Jennifer Brothers
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
| | - Sharon Welbel
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
- Rush University Medical Center, Chicago, Illinois, United States of America
| | - James Wilson
- Rush University Medical Center, Chicago, Illinois, United States of America
| | - Sheena Gillani
- Rush University Medical Center, Chicago, Illinois, United States of America
| | - Kathleen M. Weber
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
- Hektoen Institute of Medicine, Chicago, Illinois, United States of America
| | - Ralph Morack
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
- Hektoen Institute of Medicine, Chicago, Illinois, United States of America
| | - Kody Keckler
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, Illinois, United States of America
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8
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Benschop RJ, Tuttle JL, Zhang L, Poorbaugh J, Kallewaard NL, Vaillancourt P, Crisp M, Trinh TNV, Freitas JJ, Beasley S, Daniels M, Haustrup N, Higgs RE, Nirula A, Cohen MS, Marovich M. The anti-SARS-CoV-2 monoclonal antibody, bamlanivimab, minimally impacts the endogenous immune response to COVID-19 vaccination. Sci Transl Med 2022; 14:eabn3041. [PMID: 35679357 PMCID: PMC9210450 DOI: 10.1126/scitranslmed.abn3041] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [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] [Indexed: 12/14/2022]
Abstract
As the coronavirus disease 2019 (COVID-19) pandemic evolves and vaccine rollout progresses, the availability and demand for monoclonal antibodies for the prevention and treatment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection are also accelerating. This longitudinal serological study evaluated the magnitude and potency of the endogenous antibody response to COVID-19 vaccination in participants who first received a COVID-19 monoclonal antibody in a prevention study. Over the course of six months, serum samples were collected from a population of nursing home residents and staff enrolled in a clinical trial who were randomized to either bamlanivimab treatment or placebo. In an unplanned component of this trial, a subset of these participants was subsequently fully vaccinated with two doses of either SpikeVax (Moderna) or Comirnaty (BioNTech/Pfizer) COVID-19 mRNA vaccines. This post-hoc analysis assessed the immune response to vaccination for 135 participants without prior SARS-CoV-2 infection. Antibody titers and potency were assessed using three assays against SARS-CoV-2 proteins that bamlanivimab does not efficiently bind to, thereby reflecting the endogenous antibody response. All bamlanivimab and placebo recipients mounted a robust immune response to full COVID-19 vaccination, irrespective of age, risk-category, and vaccine type with any observed differences of uncertain clinical importance. These findings are pertinent for informing public health policy with results that suggest that the benefit of receiving COVID-19 vaccination at the earliest opportunity outweighs the minimal effect on the endogenous immune response due to prior prophylactic COVID-19 monoclonal antibody infusion.
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Affiliation(s)
| | - Jay L Tuttle
- Eli Lilly and Company, Indianapolis, IN 46225, USA
| | - Lin Zhang
- Eli Lilly and Company, Indianapolis, IN 46225, USA
| | | | | | | | | | | | | | | | | | | | | | - Ajay Nirula
- Eli Lilly and Company, Indianapolis, IN 46225, USA
| | - Myron S Cohen
- Institute of Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, NC27599, USA
| | - Mary Marovich
- Division of AIDS, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20850, USA
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Ansalone C, Ainsworth RI, Nygaard G, Ai R, Prideaux EB, Hammaker D, Perumal NB, Weichert K, Tung F, Kodandapani L, Sauder JM, Mertsching EC, Benschop RJ, Boyle DL, Wang W, Firestein GS. Caspase-8 Variant G Regulates Rheumatoid Arthritis Fibroblast-Like Synoviocyte Aggressive Behavior. ACR Open Rheumatol 2022; 4:288-299. [PMID: 34963199 PMCID: PMC8992463 DOI: 10.1002/acr2.11384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/23/2021] [Accepted: 10/13/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE Fibroblast-like synoviocytes (FLS) play a pivotal role in rheumatoid arthritis (RA) by contributing to synovial inflammation and progressive joint damage. An imprinted epigenetic state is associated with the FLS aggressive phenotype. We identified CASP8 (encoding for caspase-8) as a differentially marked gene and evaluated its pathogenic role in RA FLSs. METHODS RA FLS lines were obtained from synovial tissues at arthroplasty and used at passage 5-8. Caspase-8 was silenced using small interfering RNA, and its effect was determined in cell adhesion, migration and invasion assays. Quantitative reverse transcription PCR and western blot were used to assess gene and protein expression, respectively. A caspase-8 selective inhibitor was used determine the role of enzymatic activity on FLS migration and invasion. Caspase-8 isoform transcripts and epigenetic marks in FLSs were analyzed in FLS public databases. Crystal structures of caspase-8B and G were determined. RESULTS Caspase-8 deficiency in RA FLSs reduced cell adhesion, migration, and invasion independent of its catalytic activity. Epigenetic and transcriptomic analyses of RA FLSs revealed that a specific caspase-8 isoform, variant G, is the dominant isoform expressed (~80% of total caspase-8) and induced by PDGF. The crystal structures of caspase-8 variant G and B were identical except for a unique unstructured 59 amino acid N-terminal domain in variant G. Selective knockdown of caspase-8G was solely responsible for the effects of caspase-8 on calpain activity and cell invasion in FLS. CONCLUSION Blocking caspase-8 variant G could decrease cell invasion in diseases like RA without the potential deleterious effects of nonspecific caspase-8 inhibition.
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Affiliation(s)
| | | | - Gyrid Nygaard
- University of California San DiegoLa JollaCalifornia
| | - Rizi Ai
- University of California San DiegoLa JollaCalifornia
| | | | | | | | | | | | | | | | | | | | | | - Wei Wang
- University of California San DiegoLa JollaCalifornia
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10
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Sims JT, Poorbaugh J, Chang CY, Holzer TR, Zhang L, Engle SM, Beasley S, Doman TN, Naughton L, Higgs RE, Kallewaard N, Benschop RJ. Relationship between gene expression patterns from nasopharyngeal swabs and serum biomarkers in patients hospitalized with COVID-19, following treatment with the neutralizing monoclonal antibody bamlanivimab. J Transl Med 2022; 20:134. [PMID: 35303909 PMCID: PMC8931785 DOI: 10.1186/s12967-022-03345-3] [Citation(s) in RCA: 5] [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: 12/30/2021] [Accepted: 03/08/2022] [Indexed: 12/15/2022] Open
Abstract
Background A thorough understanding of a patient’s inflammatory response to Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection is crucial to discerning the associated, underlying immunological processes and to the selection and implementation of treatment strategies. Defining peripheral blood biomarkers relevant to SARS-CoV-2 infection is fundamental to detecting and monitoring this systemic disease. This safety-focused study aims to monitor and characterize the immune response to SARS-CoV-2 infection via analysis of peripheral blood and nasopharyngeal swab samples obtained from patients hospitalized with Coronavirus disease 2019 (COVID-19), in the presence or absence of bamlanivimab treatment. Methods 23 patients hospitalized with COVID-19 were randomized to receive a single dose of the neutralizing monoclonal antibody, bamlanivimab (700 mg, 2800 mg or 7000 mg) or placebo, at study initiation (Clinical Trial; NCT04411628). Serum samples and nasopharyngeal swabs were collected at multiple time points over 1 month. A Proximity Extension Array was used to detect inflammatory profiles from protein biomarkers in the serum of hospitalized COVID-19 patients relative to age/sex-matched healthy controls. RNA sequencing was performed on nasopharyngeal swabs. A Luminex serology assay and Elecsys® Anti-SARS-CoV-2 immunoassay were used to detect endogenous antibody formation and to monitor seroconversion in each cohort over time. A mixed model for repeated measures approach was used to analyze changes in serology and serum proteins over time. Results Levels of IL-6, CXCL10, CXCL11, IFNγ and MCP-3 were > fourfold higher in the serum of patients with COVID-19 versus healthy controls and linked with observations of inflammatory and viral-induced interferon response genes detected in nasopharyngeal swab samples from the same patients. While IgA and IgM titers peaked around 7 days post-dose, IgG titers remained high, even after 28 days. Changes in biomarkers over time were not significantly different between the bamlanivimab and placebo groups. Conclusions Similarities observed between nasopharyngeal gene expression patterns and peripheral blood biomarker profiles reveal a connection between the circulation and processes in the nasopharyngeal cavity, reinforcing the potential utility of systemic blood biomarker profiling for therapeutic monitoring of patient response. Serological antibody responses in patients correlated closely with reductions in the COVID-19 inflammatory protein biomarker signature. Bamlanivimab did not affect the biomarker dynamics in this hospitalized patient population. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03345-3.
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Affiliation(s)
- Jonathan T Sims
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Josh Poorbaugh
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Ching-Yun Chang
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Timothy R Holzer
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Lin Zhang
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Sarah M Engle
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Stephanie Beasley
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Thompson N Doman
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Lynn Naughton
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Richard E Higgs
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Nicole Kallewaard
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA
| | - Robert J Benschop
- Eli Lilly and Company, Lilly Corporate Center, 893 S Delaware St., Indianapolis, IN, 46285, USA.
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11
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Zhang L, Poorbaugh J, Dougan M, Chen P, Gottlieb RL, Huhn G, Beasley S, Daniels M, Ngoc Vy Trinh T, Crisp M, Freitas JJ, Vaillancourt P, Patel DR, Nirula A, Kallewaard NL, Higgs RE, Benschop RJ. Endogenous Antibody Responses to SARS-CoV-2 in Patients With Mild or Moderate COVID-19 Who Received Bamlanivimab Alone or Bamlanivimab and Etesevimab Together. Front Immunol 2021; 12:790469. [PMID: 34956222 PMCID: PMC8697104 DOI: 10.3389/fimmu.2021.790469] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 10/06/2021] [Accepted: 11/18/2021] [Indexed: 02/02/2023] Open
Abstract
Background Neutralizing monoclonal antibodies (mAbs) to SARS-CoV-2 are clinically efficacious when administered early, decreasing hospitalization and mortality in patients with mild or moderate COVID-19. We investigated the effects of receiving mAbs (bamlanivimab alone and bamlanivimab and etesevimab together) after SARS-CoV-2 infection on the endogenous immune response. Methods Longitudinal serum samples were collected from patients with mild or moderate COVID-19 in the BLAZE-1 trial who received placebo (n=153), bamlanivimab alone [700 mg (n=100), 2800 mg (n=106), or 7000 mg (n=98)], or bamlanivimab (2800 mg) and etesevimab (2800 mg) together (n=111). A multiplex Luminex serology assay measured antibody titers against SARS-CoV-2 antigens, including SARS-CoV-2 protein variants that evade bamlanivimab or etesevimab binding, and SARS-CoV-2 pseudovirus neutralization assays were performed. Results The antibody response in patients who received placebo or mAbs had a broad specificity. Titer change from baseline against a receptor-binding domain mutant (Spike-RBD E484Q), as well as N-terminal domain (Spike-NTD) and nucleocapsid protein (NCP) epitopes were 1.4 to 4.1 fold lower at day 15-85 in mAb recipients compared with placebo. Neutralizing activity of day 29 sera from bamlanivimab monotherapy cohorts against both spike E484Q and beta variant (B.1.351) were slightly reduced compared with placebo (by a factor of 3.1, p=0.001, and 2.9, p=0.002, respectively). Early viral load correlated with the subsequent antibody titers of the native, unmodified humoral response (p<0.0001 at Day 15, 29, 60 and 85 for full-length spike). Conclusions Patients with mild or moderate COVID-19 treated with mAbs develop a wide breadth of antigenic responses to SARS-CoV-2. Small reductions in titers and neutralizing activity, potentially due to a decrease in viral load following mAb treatment, suggest minimal impact of mAb treatment on the endogenous immune response.
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Affiliation(s)
- Lin Zhang
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Josh Poorbaugh
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Michael Dougan
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Peter Chen
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Robert L Gottlieb
- Department of Internal Medicine, Center for Advanced Heart and Lung Disease, Baylor University Medical Center, Dallas, TX, United States.,Baylor Scott & White Research Institute, Dallas, TX, United States
| | - Gregory Huhn
- The Ruth M. Rothstein CORE Center, Cook County Health, Chicago, IL, United States
| | - Stephanie Beasley
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Montanea Daniels
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Thi Ngoc Vy Trinh
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Melissa Crisp
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | | | - Peter Vaillancourt
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Dipak R Patel
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Ajay Nirula
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Nicole L Kallewaard
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Richard E Higgs
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Robert J Benschop
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
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12
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Chen P, Datta G, Grace Li Y, Chien J, Price K, Chigutsa E, Brown-Augsburger P, Poorbaugh J, Fill J, Benschop RJ, Rouphael N, Kay A, Mulligan MJ, Saxena A, Fischer WA, Dougan M, Klekotka P, Nirula A, Benson C. First-in-Human Study of Bamlanivimab in a Randomized Trial of Hospitalized Patients With COVID-19. Clin Pharmacol Ther 2021; 110:1467-1477. [PMID: 34455583 PMCID: PMC8653186 DOI: 10.1002/cpt.2405] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 06/01/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022]
Abstract
Therapeutics for patients hospitalized with coronavirus disease 2019 (COVID‐19) are urgently needed during the pandemic. Bamlanivimab is a potent neutralizing monoclonal antibody that blocks severe acute respiratory syndrome‐coronavirus 2 (SARS‐CoV‐2) attachment and entry into human cells, which could potentially lead to therapeutic benefit. J2W‐MC‐PYAA was a randomized, double‐blind, sponsor unblinded, placebo‐controlled, single ascending dose first‐in‐human trial (NCT04411628) in hospitalized patients with COVID‐19. A total of 24 patients received either placebo or a single dose of bamlanivimab (700 mg, 2,800 mg, or 7,000 mg). The primary objective was assessment of safety and tolerability, including adverse events and serious adverse events, with secondary objectives of pharmacokinetic (PK) and pharmacodynamic analyses. Treatment‐emergent adverse event (TEAE) rates were identical in the placebo and pooled bamlanivimab groups (66.7%). There were no apparent dose‐related increases in the number or severity of TEAEs. There were no serious adverse events or deaths during the study, and no discontinuations due to adverse events. PKs of bamlanivimab is linear and exposure increased proportionally with dose following single i.v. administration. The half‐life was ~ 17 days. These results demonstrate the favorable safety profile of bamlanivimab, and provided the initial critical evaluation of safety, tolerability, and PKs in support of the development of bamlanivimab in several ongoing clinical trials.
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Affiliation(s)
- Peter Chen
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Gourab Datta
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | - Jenny Chien
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Karen Price
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | | | - Jeffrey Fill
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | - Ariel Kay
- Emory University, Atlanta, Georgia, USA
| | | | - Amit Saxena
- NYU Grossman School of Medicine, New York, New York, USA
| | - William A Fischer
- The University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Michael Dougan
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Ajay Nirula
- Eli Lilly and Company, Indianapolis, Indiana, USA
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13
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Okragly AJ, Corwin KB, Elia M, He D, Schroeder O, Zhang Q, Shiyanova T, Bright S, Dicker SB, Chlewicki L, Truhlar SME, Davies J, Patel CN, Benschop RJ. Generation and Characterization of Torudokimab (LY3375880): A Monoclonal Antibody That Neutralizes Interleukin-33. J Inflamm Res 2021; 14:3823-3835. [PMID: 34408465 PMCID: PMC8364917 DOI: 10.2147/jir.s320287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/16/2021] [Indexed: 12/13/2022] Open
Abstract
Background Interleukin-33 (IL-33) is an alarmin that is released following cellular damage, mechanical injury, or necrosis. It is a member of the IL-1 family and binds to a heterodimer receptor consisting of ST2 and IL-1RAP to induce the production of a wide range of cellular mediators, including the type 2 cytokines IL-4, IL-5 and IL-13. This relationship has led to the hypothesis that the IL-33/ST2 pathway is a driver of allergic disease and inhibition of the IL-33 and ST2 association could have therapeutic benefit. Methods In this paper, we describe the selection of a phage antibody through the ability to bind human IL-33 and block IL-33/ST2 interaction. This hit antibody was then affinity matured by site-directed mutagenesis of the antibody complementarity-determining regions (CDRs). Further characterization of a fully human monoclonal antibody (mAb), torudokimab (LY3375880) included demonstration of human IL-33 neutralization activity in vitro with an NFκB reporter assay and IL-33 induced mast cell cytokine secretion assay, followed by an in vivo IL-33-induced pharmacodynamic inhibition assay in mice that used IL-5 production as the endpoint. Results Torudokimab is highly specific to IL-33 and does not bind any of the other IL-1 family members. Furthermore, torudokimab binds human and cynomolgus monkey IL-33 with higher affinity than the binding affinity of IL-33 to ST2, but does not bind mouse, rat, or rabbit IL-33. Torudokimab’s half-life in cynomolgous monkey projects monthly dosing in the clinic. Conclusion Due to torudokimab’s high affinity, its ability to completely neutralize IL-33 activity in vitro and in vivo, and the observed cynomolgus monkey pharmacokinetic properties, this molecule was selected for clinical development.
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Affiliation(s)
- Angela J Okragly
- Immunology Research, Eli Lilly and Company, Indianapolis, IN, USA
| | | | - Marikka Elia
- BioTechnology Discovery Research Eli Lilly and Company, San Diego, CA, USA
| | - Dongmei He
- BioTechnology Discovery Research Eli Lilly and Company, San Diego, CA, USA
| | - Oliver Schroeder
- BioTechnology Discovery Research Eli Lilly and Company, San Diego, CA, USA
| | - Qing Zhang
- BioTechnology Discovery Research Eli Lilly and Company, San Diego, CA, USA
| | - Tatiyana Shiyanova
- BioTechnology Discovery Research, Eli Lilly and Company, Indianapolis, IN, USA
| | - Stuart Bright
- Immunology Research, Eli Lilly and Company, Indianapolis, IN, USA
| | | | | | | | - Julian Davies
- BioTechnology Discovery Research Eli Lilly and Company, San Diego, CA, USA
| | - Chetan N Patel
- BioTechnology Discovery Research, Eli Lilly and Company, Indianapolis, IN, USA
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14
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Gruver AM, Westfall MD, Ackermann BL, Hill S, Morrison RD, Bodo J, Lai KK, Gemperline DC, Hsi ED, Liebler DC, Schmitz J, Benschop RJ. Proteomic characterisations of ulcerative colitis endoscopic biopsies associate with clinically relevant histological measurements of disease severity. J Clin Pathol 2021; 75:636-642. [PMID: 34353876 PMCID: PMC9411881 DOI: 10.1136/jclinpath-2021-207718] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/10/2021] [Indexed: 12/03/2022]
Abstract
Aims and methods Accurate protein measurements using formalin-fixed biopsies are needed to improve disease characterisation. This feasibility study used targeted and global mass spectrometry (MS) to interrogate a spectrum of disease severities using 19 ulcerative colitis (UC) biopsies. Results Targeted assays for CD8, CD19, CD132 (interleukin-2 receptor subunit gamma/common cytokine receptor gamma chain), FOXP3 (forkhead box P3) and IL17RA (interleukin 17 receptor A) were successful; however, assays for IL17A (interleukin 17A), IL23 (p19) (interleukin 23, alpha subunit p19) and IL23R (interleukin 23 receptor) did not permit target detection. Global proteome analysis (4200 total proteins) was performed to identify pathways associated with UC progression. Positive correlation was observed between histological scores indicating active colitis and neutrophil-related measurements (R2=0.42–0.72); inverse relationships were detected with cell junction targets (R2=0.49–0.71) and β-catenin (R2=0.51–0.55) attributed to crypt disruption. An exploratory accuracy assessment with Geboes Score and Robarts Histopathology Index cut-offs produced sensitivities/specificities of 72.7%/75.0% and 100.0%/81.8%, respectively. Conclusions Pathologist-guided MS assessments provide a complementary approach to histological scoring systems. Additional studies are indicated to verify the utility of this novel approach.
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Affiliation(s)
- Aaron M Gruver
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | - Bradley L Ackermann
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | - Juraj Bodo
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - Keith K Lai
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | - David C Gemperline
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Eric D Hsi
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Jochen Schmitz
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Robert J Benschop
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, USA
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15
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Barturen G, Babaei S, Català-Moll F, Martínez-Bueno M, Makowska Z, Martorell-Marugán J, Carmona-Sáez P, Toro-Domínguez D, Carnero-Montoro E, Teruel M, Kerick M, Acosta-Herrera M, Le Lann L, Jamin C, Rodríguez-Ubreva J, García-Gómez A, Kageyama J, Buttgereit A, Hayat S, Mueller J, Lesche R, Hernandez-Fuentes M, Juarez M, Rowley T, White I, Marañón C, Gomes Anjos T, Varela N, Aguilar-Quesada R, Garrancho FJ, López-Berrio A, Rodriguez Maresca M, Navarro-Linares H, Almeida I, Azevedo N, Brandão M, Campar A, Faria R, Farinha F, Marinho A, Neves E, Tavares A, Vasconcelos C, Trombetta E, Montanelli G, Vigone B, Alvarez-Errico D, Li T, Thiagaran D, Blanco Alonso R, Corrales Martínez A, Genre F, López Mejías R, Gonzalez-Gay MA, Remuzgo S, Ubilla Garcia B, Cervera R, Espinosa G, Rodríguez-Pintó I, De Langhe E, Cremer J, Lories R, Belz D, Hunzelmann N, Baerlecken N, Kniesch K, Witte T, Lehner M, Stummvoll G, Zauner M, Aguirre-Zamorano MA, Barbarroja N, Castro-Villegas MC, Collantes-Estevez E, de Ramon E, Díaz Quintero I, Escudero-Contreras A, Fernández Roldán MC, Jiménez Gómez Y, Jiménez Moleón I, Lopez-Pedrera R, Ortega-Castro R, Ortego N, Raya E, Artusi C, Gerosa M, Meroni PL, Schioppo T, De Groof A, Ducreux J, Lauwerys B, Maudoux AL, Cornec D, Devauchelle-Pensec V, Jousse-Joulin S, Jouve PE, Rouvière B, Saraux A, Simon Q, Alvarez M, Chizzolini C, Dufour A, Wynar D, Balog A, Bocskai M, Deák M, Dulic S, Kádár G, Kovács L, Cheng Q, Gerl V, Hiepe F, Khodadadi L, Thiel S, de Rinaldis E, Rao S, Benschop RJ, Chamberlain C, Dow ER, Ioannou Y, Laigle L, Marovac J, Wojcik J, Renaudineau Y, Borghi MO, Frostegård J, Martín J, Beretta L, Ballestar E, McDonald F, Pers JO, Alarcón-Riquelme ME. Integrative Analysis Reveals a Molecular Stratification of Systemic Autoimmune Diseases. Arthritis Rheumatol 2021; 73:1073-1085. [PMID: 33497037 DOI: 10.1002/art.41610] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/01/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Clinical heterogeneity, a hallmark of systemic autoimmune diseases, impedes early diagnosis and effective treatment, issues that may be addressed if patients could be classified into groups defined by molecular pattern. This study was undertaken to identify molecular clusters for reclassifying systemic autoimmune diseases independently of clinical diagnosis. METHODS Unsupervised clustering of integrated whole blood transcriptome and methylome cross-sectional data on 955 patients with 7 systemic autoimmune diseases and 267 healthy controls was undertaken. In addition, an inception cohort was prospectively followed up for 6 or 14 months to validate the results and analyze whether or not cluster assignment changed over time. RESULTS Four clusters were identified and validated. Three were pathologic, representing "inflammatory," "lymphoid," and "interferon" patterns. Each included all diagnoses and was defined by genetic, clinical, serologic, and cellular features. A fourth cluster with no specific molecular pattern was associated with low disease activity and included healthy controls. A longitudinal and independent inception cohort showed a relapse-remission pattern, where patients remained in their pathologic cluster, moving only to the healthy one, thus showing that the molecular clusters remained stable over time and that single pathogenic molecular signatures characterized each individual patient. CONCLUSION Patients with systemic autoimmune diseases can be jointly stratified into 3 stable disease clusters with specific molecular patterns differentiating different molecular disease mechanisms. These results have important implications for future clinical trials and the study of nonresponse to therapy, marking a paradigm shift in our view of systemic autoimmune diseases.
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Affiliation(s)
- Guillermo Barturen
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | | | | | - Manuel Martínez-Bueno
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | | | - Jordi Martorell-Marugán
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Pedro Carmona-Sáez
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Daniel Toro-Domínguez
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Elena Carnero-Montoro
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - María Teruel
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Martin Kerick
- Institute of Parasitology and Biomedicine "López Neyra", Spanish National Research Council, Granada, Spain
| | - Marialbert Acosta-Herrera
- Institute of Parasitology and Biomedicine "López Neyra", Spanish National Research Council, Granada, Spain
| | - Lucas Le Lann
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | - Christophe Jamin
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | | | | | | | | | | | | | | | | | | | | | | | - Concepción Marañón
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Tania Gomes Anjos
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | - Nieves Varela
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain
| | | | | | | | | | | | | | | | | | - Ana Campar
- Centro Hospitalar do Porto, Porto, Portugal
| | | | | | | | | | | | | | - Elena Trombetta
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gaia Montanelli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Barbara Vigone
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Tianlu Li
- Bellvitge Biomedical Research Institute, Barcelona, Spain
| | | | - Ricardo Blanco Alonso
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | | | - Fernanda Genre
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | - Raquel López Mejías
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | - Miguel A Gonzalez-Gay
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | - Sara Remuzgo
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | - Begoña Ubilla Garcia
- Hospital Universitario Marqués de Valdecilla, IDIVAL, Universidad de Cantabria, Santander, Spain
| | - Ricard Cervera
- Hospital Clínic and Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Gerard Espinosa
- Hospital Clínic and Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Ignasi Rodríguez-Pintó
- Hospital Clínic and Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Ellen De Langhe
- Katholieke Universiteit Leuven and Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Jonathan Cremer
- Katholieke Universiteit Leuven and Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Rik Lories
- Katholieke Universiteit Leuven and Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Doreen Belz
- Klinikum der Universitaet zu Koeln, Cologne, Germany
| | | | | | | | | | | | | | | | | | - Nuria Barbarroja
- Reina Sofia University Hospital and University of Cordoba, Cordoba, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Aurélie De Groof
- Université Catholique de Louvain and Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Julie Ducreux
- Université Catholique de Louvain and Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Bernard Lauwerys
- Université Catholique de Louvain and Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Anne-Lise Maudoux
- Université Catholique de Louvain and Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Divi Cornec
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | | | - Sandrine Jousse-Joulin
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | | | - Bénédicte Rouvière
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | - Alain Saraux
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | - Quentin Simon
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | | | | | | | | | | | | | | | | | | | | | - Qingyu Cheng
- Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Velia Gerl
- Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Falk Hiepe
- Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Silvia Thiel
- Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | | | | | | | | | | | - Laurence Laigle
- Institut de Recherches Internationales Servier, Suresnes, France
| | | | | | - Yves Renaudineau
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | | | | | - Javier Martín
- Institute of Parasitology and Biomedicine "López Neyra", Spanish National Research Council, Granada, Spain
| | - Lorenzo Beretta
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | | | - Jacques-Olivier Pers
- Université de Brest, Centre Hospitalier Universitaire de Brest, INSERM, and Labex IGO, Brest, France
| | - Marta E Alarcón-Riquelme
- Pfizer-University of Granada-Junta de Andalucía Centre for Genomics and Oncological Research, Granada, Spain, and Karolinska Institutet, Stockholm, Sweden
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16
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Crespo J, Koh YT, Hu N, Moore PA, Bonvini E, Glasebrook AL, Martin AP, Benschop RJ. A humanized CD3ε-knock-in mouse model for pre-clinical testing of anti-human CD3 therapy. PLoS One 2021; 16:e0245917. [PMID: 33596227 PMCID: PMC7888618 DOI: 10.1371/journal.pone.0245917] [Citation(s) in RCA: 3] [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: 08/06/2020] [Accepted: 01/10/2021] [Indexed: 01/08/2023] Open
Abstract
Pre-clinical murine models are critical for translating drug candidates from the bench to the bedside. There is interest in better understanding how anti-human CD3 therapy works based on recent longitudinal studies of short-term administration. Although several models have been created in this pursuit, each have their own advantages and disadvantages in Type-1 diabetes. In this study, we report a murine genetic knock-in model which expresses both a murine and a humanized-CD3ε-exon, rendering it sensitive to manipulation with anti-human CD3. These huCD3εHET mice are viable and display no gross abnormalities. Specifically, thymocyte development and T cell peripheral homeostasis is unaffected. We tested immune functionality of these mice by immunizing them with T cell-dependent antigens and no differences in antibody titers compared to wild type mice were recorded. Finally, we performed a graft-vs-host disease model that is driven by effector T cell responses and observed a wasting disease upon transfer of huCD3εHET T cells. Our results show a viable humanized CD3 murine model that develops normally, is functionally engaged by anti-human CD3 and can instruct on pre-clinical tests of anti-human CD3 antibodies.
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Affiliation(s)
- Joel Crespo
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
| | - Yi Ting Koh
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
| | - Ningjie Hu
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
| | - Paul A. Moore
- MacroGenics, Rockville, MD, United States of America
| | - Ezio Bonvini
- MacroGenics, Rockville, MD, United States of America
| | - Andrew L. Glasebrook
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
| | - Andrea P. Martin
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
| | - Robert J. Benschop
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States of America
- * E-mail:
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Thudium CS, Bay-Jensen AC, Cahya S, Dow ER, Karsdal MA, Koch AE, Zhang W, Benschop RJ. The Janus kinase 1/2 inhibitor baricitinib reduces biomarkers of joint destruction in moderate to severe rheumatoid arthritis. Arthritis Res Ther 2020; 22:235. [PMID: 33046136 PMCID: PMC7552555 DOI: 10.1186/s13075-020-02340-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 04/20/2020] [Accepted: 10/02/2020] [Indexed: 12/26/2022] Open
Abstract
Background Tissue released blood-based biomarkers can provide insight into drug mode of action and response. To understand the changes in extracellular matrix turnover, we analyzed biomarkers associated with joint tissue turnover from a phase 3, randomized, placebo-controlled study of baricitinib in patients with active rheumatoid arthritis (RA). Methods Serum biomarkers associated with synovial inflammation (C1M, C3M, and C4M), cartilage degradation (C2M), bone resorption (CTX-I), and bone formation (osteocalcin) were analyzed at baseline, and weeks 4 and 12, from a subgroup of patients (n = 240) randomized to placebo or 2-mg or 4-mg baricitinib (RA-BUILD, NCT01721057). Mixed-model repeated measure was used to identify biomarkers altered by baricitinib. The relationship between changes in biomarkers and clinical measures was evaluated using correlation analysis. Results Treatment arms were well balanced for baseline biomarkers, demographics, and disease activity. At week 4, baricitinib 4-mg significantly reduced C1M from baseline by 21% compared to placebo (p < 0.01); suppression was sustained at week 12 (27%, p < 0.001). Baricitinib 4-mg reduced C3M and C4M at week 4 by 14% and 12% compared to placebo, respectively (p < 0.001); they remained reduced by 16% and 11% at week 12 (p < 0.001). In a pooled analysis including all treatment arms, patients with the largest reduction (upper 25% quartile) in C1M, C3M, and C4M by week 12 had significantly greater clinical improvement in the Simplified Disease Activity Index at week 12 compared to patients with the smallest reduction (lowest 25% quartile). Conclusion Baricitinib treatment resulted in reduced circulating biomarkers associated with joint tissue destruction as well as concomitant RA clinical improvement. Trial registration ClinicalTrials.gov NCT01721057; date of registration: November 1, 2012
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Affiliation(s)
- Christian S Thudium
- Nordic Bioscience, Biomarkers and Research, Herlev Hovedgade 205-207, DK-2730, Herlev, Denmark.
| | - Anne C Bay-Jensen
- Nordic Bioscience, Biomarkers and Research, Herlev Hovedgade 205-207, DK-2730, Herlev, Denmark
| | | | - Ernst R Dow
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | - Morten A Karsdal
- Nordic Bioscience, Biomarkers and Research, Herlev Hovedgade 205-207, DK-2730, Herlev, Denmark
| | - Alisa E Koch
- Eli Lilly and Company, Indianapolis, Indiana, USA
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Dörner T, Tanaka Y, Petri MA, Smolen JS, Wallace DJ, Dow ER, Higgs RE, Rocha G, Crowe B, Benschop RJ, Byers NL, Silk ME, de Bono S, Fantini D, Hoffman RW. Baricitinib-associated changes in global gene expression during a 24-week phase II clinical systemic lupus erythematosus trial implicates a mechanism of action through multiple immune-related pathways. Lupus Sci Med 2020; 7:e000424. [PMID: 33037080 PMCID: PMC7549481 DOI: 10.1136/lupus-2020-000424] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/17/2020] [Accepted: 09/12/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To characterise the molecular pathways impacted by the pharmacologic effects of the Janus kinase (JAK) 1 and JAK2 inhibitor baricitinib in SLE. METHODS In a phase II, 24-week, randomised, placebo-controlled, double-blind study (JAHH), RNA was isolated from whole blood in 274 patients and analysed using Affymetrix HTA2.0 array. Serum cytokines were measured using ultrasensitive quantitative assays. RESULTS Gene expression profiling demonstrated an elevation of STAT1, STAT2 and multiple interferon (IFN) responsive genes at baseline in patients with SLE. Statistical and gene network analyses demonstrated that baricitinib treatment reduced the mRNA expression of functionally interconnected genes involved in SLE including STAT1-target, STAT2-target and STAT4-target genes and multiple IFN responsive genes. At baseline, serum cytokines IFN-α, IFN-γ, interleukin (IL)-12p40 and IL-6 were measurable and elevated above healthy controls. Treatment with baricitinib significantly decreased serum IL-12p40 and IL-6 cytokine levels at week 12, which persisted through week 24. CONCLUSION Baricitinib treatment induced significant reduction in the RNA expression of a network of genes associated with the JAK/STAT pathway, cytokine signalling and SLE pathogenesis. Baricitinib consistently reduced serum levels of two key cytokines implicated in SLE pathogenesis, IL-12p40 and IL-6.
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Affiliation(s)
- Thomas Dörner
- DRFZ Berlin and Department of Rheumatology and Clinical Immunology, Charite University Hospital Berlin, Berlin, Germany
| | - Yoshiya Tanaka
- The First Department of Internal Medicine, School of Medicine, University of Occupational & Environmental Health, Kitakyushu, Japan
| | - Michelle A Petri
- Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Josef S Smolen
- Division of Rheumatology, Medical University of Vienna, Wien, Austria
| | - Daniel J Wallace
- Department of Rheumatology, Cedars-Sinai Medical Center, West Hollywood, California, USA
| | - Ernst R Dow
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | - Brenda Crowe
- Eli Lilly and Company, Indianapolis, Indiana, USA
| | | | | | - Maria E Silk
- Eli Lilly and Company, Indianapolis, Indiana, USA
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Sims JT, Krishnan V, Chang CY, Engle SM, Casalini G, Rodgers GH, Bivi N, Nickoloff BJ, Konrad RJ, de Bono S, Higgs RE, Benschop RJ, Ottaviani S, Cardoso A, Nirula A, Corbellino M, Stebbing J. Characterization of the cytokine storm reflects hyperinflammatory endothelial dysfunction in COVID-19. J Allergy Clin Immunol 2020; 147:107-111. [PMID: 32920092 PMCID: PMC7488591 DOI: 10.1016/j.jaci.2020.08.031] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [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: 06/25/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Physicians treating patients with coronavirus disease 2019 (COVID-19) increasingly believe that the hyperinflammatory acute stage of COVID-19 results in a cytokine storm. The circulating biomarkers seen across the spectrum of COVID-19 have not been characterized compared with healthy controls, but such analyses are likely to yield insights into the pursuit of interventions that adequately reduce the burden of these cytokine storms. OBJECTIVE To identify and characterize the host inflammatory response to severe acute respiratory syndrome coronavirus 2 infection, we assessed levels of proteins related to immune responses and cardiovascular disease in patients stratified as mild, moderate, and severe versus matched healthy controls. METHODS Blood samples from adult patients hospitalized with COVID-19 were analyzed using high-throughput and ultrasensitive proteomic platforms and compared with age- and sex-matched healthy controls to provide insights into differential regulation of 185 markers. RESULTS Results indicate a dominant hyperinflammatory milieu in the circulation and vascular endothelial damage markers within patients with COVID-19, and strong biomarker association with patient response as measured by Ordinal Scale. As patients progress, we observe statistically significant dysregulation of IFN-γ, IL-1RA, IL-6, IL-10, IL-19, monocyte chemoattractant protein (MCP)-1, MCP-2, MCP-3, CXCL9, CXCL10, CXCL5, ENRAGE, and poly (ADP-ribose) polymerase 1. Furthermore, in a limited series of patients who were sampled frequently, confirming reliability and reproducibility of our assays, we demonstrate that intervention with baricitinib attenuates these circulating biomarkers associated with the cytokine storm. CONCLUSIONS These wide-ranging circulating biomarkers show an association with increased disease severity and may help stratify patients and selection of therapeutic options. They also provide insights into mechanisms of severe acute respiratory syndrome coronavirus 2 pathogenesis and the host response.
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Affiliation(s)
| | | | | | | | - Giacomo Casalini
- Luigi Sacco Department of Clinical and Biomedical Sciences, University of Milan, Milan, Italy
| | | | | | | | | | | | | | | | - Silvia Ottaviani
- Department of Surgery and Cancer, Imperial College, London, United Kingdom
| | | | | | - Mario Corbellino
- Division of Infectious Diseases, ASST Fatebenefratelli Sacco, Milan, Italy
| | - Justin Stebbing
- Department of Surgery and Cancer, Imperial College, London, United Kingdom.
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20
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Benschop RJ, Chow CK, Tian Y, Nelson J, Barmettler B, Atwell S, Clawson D, Chai Q, Jones B, Fitchett J, Torgerson S, Ji Y, Bina H, Hu N, Ghanem M, Manetta J, Wroblewski VJ, Lu J, Allan BW. Development of tibulizumab, a tetravalent bispecific antibody targeting BAFF and IL-17A for the treatment of autoimmune disease. MAbs 2019; 11:1175-1190. [PMID: 31181988 PMCID: PMC6748573 DOI: 10.1080/19420862.2019.1624463] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 12/23/2022] Open
Abstract
We describe a bispecific dual-antagonist antibody against human B cell activating factor (BAFF) and interleukin 17A (IL-17). An anti-IL-17 single-chain variable fragment (scFv) derived from ixekizumab (Taltz®) was fused via a glycine-rich linker to anti-BAFF tabalumab. The IgG-scFv bound both BAFF and IL-17 simultaneously with identical stoichiometry as the parental mAbs. Stability studies of the initial IgG-scFv revealed chemical degradation and aggregation not observed in either parental antibody. The anti-IL-17 scFv showed a high melting temperature (Tm) by differential scanning calorimetry (73.1°C), but also concentration-dependent, initially reversible, protein self-association. To engineer scFv stability, three parallel approaches were taken: labile complementary-determining region (CDR) residues were replaced by stable, affinity-neutral amino acids, CDR charge distribution was balanced, and a H44-L100 interface disulfide bond was introduced. The Tm of the disulfide-stabilized scFv was largely unperturbed, yet it remained monodispersed at high protein concentration. Fluorescent dye binding titrations indicated reduced solvent exposure of hydrophobic residues and decreased proteolytic susceptibility was observed, both indicative of enhanced conformational stability. Superimposition of the H44-L100 scFv (PDB id: 6NOU) and ixekizumab antigen-binding fragment (PDB id: 6NOV) crystal structures revealed nearly identical orientation of the frameworks and CDR loops. The stabilized bispecific molecule LY3090106 (tibulizumab) potently antagonized both BAFF and IL-17 in cell-based and in vivo mouse models. In cynomolgus monkey, it suppressed B cell development and survival and remained functionally intact in circulation, with a prolonged half-life. In summary, we engineered a potent bispecific antibody targeting two key cytokines involved in human autoimmunity amenable to clinical development.
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Affiliation(s)
- Robert J. Benschop
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Chi-Kin Chow
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Yu Tian
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - James Nelson
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - Barbra Barmettler
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - Shane Atwell
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - David Clawson
- Discovery Chemistry Research and Technologies, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Qing Chai
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - Bryan Jones
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - Jon Fitchett
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
| | - Stacy Torgerson
- Department of Drug Disposition Development/Commercialization; Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | | | - Holly Bina
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Ningjie Hu
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | | | - Joseph Manetta
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Victor J. Wroblewski
- Department of Drug Disposition Development/Commercialization; Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Jirong Lu
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company Corporate Center, Indianapolis, IN, USA
| | - Barrett W. Allan
- Biotechnology Discovery Research, Applied Molecular Evolution, Eli Lilly and Company, San Diego, CA, USA
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21
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Poorbaugh J, Samanta T, Bright SW, Sissons SE, Chang CY, Oberoi P, MacDonald AJ, Martin AP, Cox KL, Benschop RJ. Measurement of IL-21 in human serum and plasma using ultrasensitive MSD S-PLEX® and Quanterix SiMoA methodologies. J Immunol Methods 2018; 466:9-16. [PMID: 30590020 DOI: 10.1016/j.jim.2018.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/21/2018] [Accepted: 12/21/2018] [Indexed: 11/18/2022]
Abstract
IL-21 is a pleiotropic cytokine that plays a key role in modulating inflammatory responses, including the promotion of autoimmune diseases. Several groups have quantitated circulating levels of IL-21 in plasma and serum samples using various commercial ELISAs. We determined, however, that the most commonly used commercial assays in published literature were not specific or sensitive enough to detect levels of IL-21 in heparin plasma or serum from healthy human individuals. This finding prompted an effort to develop more specific and sensitive methods to quantitate IL-21 in complex biological matrices using proprietary anti-IL-21 antibodies with the Quanterix SiMoA platform and the Meso Scale Discovery (MSD) S-PLEX® format. Assays developed on both technology platforms were characterized in heparin plasma and serum using spike recoveries across a range of concentrations. Each method was able to detect sub-pg/mL levels of IL-21 (predicted Limit of Detection [LOD] of approximately 1.0 fg/mL for both the Quanterix SiMoA and MSD S-PLEX® platforms) which is 200-500 times lower than current commercial assays. Additionally we demonstrated that rheumatoid factor did not interfere with measuring IL-21 in the Quanterix SiMoA assay. Results obtained with the two new ultrasensitive assays showed a strong correlation (r = 0.9428; p < .0001). Additionally, IL-21 levels were significantly increased in samples from patients with Systemic Lupus Erythematosus (mean+/- SD: n = 14, 202.64 +/- 111.47 fg/mL, p = .0001 for Quanterix SiMoA and 275.4 +/- 174.66 fg/mL p = .0001 for MSD S-PLEX®) as well as in samples from patients with Sjögren's Syndrome (mean+/- SD: n = 11, 122.18 +/- 84.50 fg/mL, p = .0029 for Quanterix SiMoA and 183.64 +/- 153.00 fg/mL, p = .0082 for MSD S-PLEX®) when compared to healthy donors (mean+/- SD: n = 11, 38.1 +/- 27.8 fg/mL for Quanterix SiMoA and 58.1 +/- 30.7 fg/mL for MSD S-PLEX®). These ultrasensitive assays, for the first time, allow for the accurate quantitation of human IL-21 in heparin plasma and serum. In addition, these experiments also provide a direct comparison of the MSD S-PLEX® format and Quanterix SiMoA platform technologies, which may have broader implications to future application of these methods to evaluate low abundance proteins in complex biological matrices.
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Affiliation(s)
- Josh Poorbaugh
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA.
| | - Tanushree Samanta
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Stuart W Bright
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Sean E Sissons
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Ching-Yun Chang
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | | | - Angus J MacDonald
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Andrea P Martin
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Karen L Cox
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Robert J Benschop
- Immunology Discovery, Eli Lilly and Company, Indianapolis, IN 46285, USA
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22
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Rose WA, Okragly AJ, Hu NN, Daniels MR, Martin AP, Koh YT, Kikly K, Benschop RJ. Interleukin-33 Contributes Toward Loss of Tolerance by Promoting B-Cell-Activating Factor of the Tumor-Necrosis-Factor Family (BAFF)-Dependent Autoantibody Production. Front Immunol 2018; 9:2871. [PMID: 30574145 PMCID: PMC6292404 DOI: 10.3389/fimmu.2018.02871] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 08/02/2018] [Accepted: 11/21/2018] [Indexed: 01/13/2023] Open
Abstract
Breaking tolerance is a key event leading to autoimmunity, but the exact mechanisms responsible for this remain uncertain. Here we show that the alarmin IL-33 is able to drive the generation of autoantibodies through induction of the B cell survival factor BAFF. A temporary, short-term increase in IL-33 results in a primary (IgM) response to self-antigens. This transient DNA-specific autoantibody response was dependent on the induction of BAFF. Notably, radiation resistant cells and not myeloid cells, such as neutrophils or dendritic cells were the major source of BAFF and were critical in driving the autoantibody response. Chronic exposure to IL-33 elicited dramatic increases in BAFF levels and resulted in elevated numbers of B and T follicular helper cells as well as germinal center formation. We also observed class-switching from an IgM to an IgG DNA-specific autoantibody response. Collectively, the results provide novel insights into a potential mechanism for breaking immune-tolerance via IL-33-mediated induction of BAFF.
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Affiliation(s)
- William A Rose
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Angela J Okragly
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Ningjie N Hu
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Montanea R Daniels
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Andrea P Martin
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Yi Ting Koh
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Kristine Kikly
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
| | - Robert J Benschop
- Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, United States
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23
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Okragly AJ, Morin SM, DeRosa D, Martin AP, Johnson KW, Johnson MP, Benschop RJ. Human mast cells release the migraine-inducing factor pituitary adenylate cyclase-activating polypeptide (PACAP). Cephalalgia 2017; 38:1564-1574. [PMID: 29103295 DOI: 10.1177/0333102417740563] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Many patients with migraines suffer from allergies and vice versa, suggesting a relationship between biological mechanisms of allergy and migraine. It was proposed many years ago that mast cells may be involved in the pathophysiology of migraines. We set out to investigate the relationship between mast cell activation and known neurogenic peptides related to migraine. Methods Cultured human mast cells were assayed for the presence of neuropeptides and their receptors at the RNA and protein level. Immunohistochemistry analyses were performed on tissue resident and cultured mast cells. Mast cell degranulation assays were performed and pituitary adenylate cyclase-activating polypeptide (PACAP) activity was measured with a bioassay. Results We found that cultured and tissue resident human mast cells contain PACAP in cytoplasmic granules. No other neurogenic peptide known to be involved in migraine was detected, nor did mast cells express the receptors for PACAP or other neurogenic peptides. Furthermore, mast cell degranulation through classic IgE-mediated allergic mechanisms led to the release of PACAP. The PACAP released from mast cells was biologically active, as demonstrated using PACAP receptor reporter cell lines. We confirmed existing literature that mast cell degranulation can also be induced by several neurogenic peptides, which also resulted in PACAP release. Conclusion Our data provides a potential biological explanation for the association between allergy and migraine by demonstrating the release of biologically active PACAP from mast cells.
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Affiliation(s)
- Angela J Okragly
- 1 Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - S Michelle Morin
- 2 Neuroscience Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - David DeRosa
- 1 Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Andrea P Martin
- 1 Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Kirk W Johnson
- 2 Neuroscience Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Michael P Johnson
- 2 Neuroscience Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Robert J Benschop
- 1 Immunology Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
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Jellusova J, Cato MH, Apgar JR, Ramezani-Rad P, Leung CR, Chen C, Richardson AD, Conner EM, Benschop RJ, Woodgett JR, Rickert RC. Gsk3 is a metabolic checkpoint regulator in B cells. Nat Immunol 2017; 18:303-312. [PMID: 28114292 PMCID: PMC5310963 DOI: 10.1038/ni.3664] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Accepted: 12/15/2016] [Indexed: 12/16/2022]
Abstract
B cells predominate in a quiescent state until antigen is encountered, which results in rapid growth, proliferation and differentiation. These distinct cell states are likely accompanied by differing metabolic needs, yet little is known about the metabolic control of B cell fate. Here we show that glycogen synthase kinase 3 (GSK3) is a metabolic sensor that promotes the survival of naïve recirculating B cells by restricting cell mass accumulation. In antigen-driven responses, GSK3 was selectively required for CD40-mediated regulation of B cell size, mitochondria biogenesis, glycolysis and reactive oxygen species (ROS) production. GSK3 was required to prevent metabolic collapse and ROS-induced apoptosis when glucose became limiting, functioning in part by repressing c-Myc-dependent growth. Importantly, we found that GSK3 was required for the generation and maintenance of germinal center B cells, which require high glycolytic activity to support growth and proliferation in a hypoxic microenvironment.
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Affiliation(s)
- Julia Jellusova
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Matthew H Cato
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - John R Apgar
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Parham Ramezani-Rad
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Charlotte R Leung
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Cindi Chen
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Adam D Richardson
- NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | | | | | - James R Woodgett
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Robert C Rickert
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute (SBP), La Jolla, California, USA.,NCI-designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
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25
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Okragly AJ, Hamang MJ, Pena EA, Baker HE, Bullock HA, Lucchesi J, Martin AP, Ma YL, Benschop RJ. Elevated levels of Interleukin (IL)-33 induce bone pathology but absence of IL-33 does not negatively impact normal bone homeostasis. Cytokine 2016; 79:66-73. [PMID: 26771472 DOI: 10.1016/j.cyto.2015.12.011] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/05/2015] [Accepted: 12/11/2015] [Indexed: 10/22/2022]
Abstract
Interleukin (IL)-33 is a member of the IL-1 family. IL-33 effects are mediated through its receptor, ST2 and IL-1RAcP, and its signaling induces the production of a number of pro-inflammatory mediators, including TNFα, IL-1β, IL-6, and IFN-γ. There are conflicting reports on the role of IL-33 in bone homeostasis, with some demonstrating a bone protective role for IL-33 whilst others show that IL-33 induces inflammatory arthritis with concurrent bone destruction. To better clarify the role IL-33 plays in bone biology in vivo, we studied IL-33 KO mice as well as mice in which the cytokine form of IL-33 was overexpressed. Mid-femur cortical bone mineral density (BMD) and bone strength were similar in the IL-33 KO mice compared to WT animals during the first 8months of life. However, in the absence of IL-33, we observed higher BMD in lumbar vertebrae and distal femur in female mice. In contrast, overexpression of IL-33 resulted in a marked and rapid reduction of bone volume, mineral density and strength. Moreover, this was associated with a robust increase in inflammatory cytokines (including IL-6 and IFN-γ), suggesting the bone pathology could be a direct effect of IL-33 or an indirect effect due to the induction of other mediators. Furthermore, the detrimental bone effects were accompanied by increases in osteoclast number and the bone resorption marker of C-terminal telopeptide collagen-I (CTX-I). Together, these results demonstrate that absence of IL-33 has no negative consequences in normal bone homeostasis while high levels of circulating IL-33 contributes to pathological bone loss.
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Affiliation(s)
- Angela J Okragly
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Matthew J Hamang
- Musculoskeletal-Biology, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Emily A Pena
- Musculoskeletal-Biology, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Hana E Baker
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Heather A Bullock
- Musculoskeletal-Biology, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Jonathan Lucchesi
- Musculoskeletal-Biology, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Andrea P Martin
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Y Linda Ma
- Musculoskeletal-Biology, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Robert J Benschop
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA.
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26
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Kang S, Keener AB, Jones SZ, Benschop RJ, Caro-Maldonado A, Rathmell JC, Clarke SH, Matsushima GK, Whitmire JK, Vilen BJ. IgG-Immune Complexes Promote B Cell Memory by Inducing BAFF. J Immunol 2015; 196:196-206. [PMID: 26621863 DOI: 10.4049/jimmunol.1402527] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 10/28/2015] [Indexed: 01/10/2023]
Abstract
Memory B cell responses are vital for protection against infections but must also be regulated to prevent autoimmunity. Cognate T cell help, somatic hypermutation, and affinity maturation within germinal centers (GCs) are required for high-affinity memory B cell formation; however, the signals that commit GC B cells to the memory pool remain unclear. In this study, we identify a role for IgG-immune complexes (ICs), FcγRs, and BAFF during the formation of memory B cells in mice. We found that early secretion of IgG in response to immunization with a T-dependent Ag leads to IC-FcγR interactions that induce dendritic cells to secrete BAFF, which acts at or upstream of Bcl-6 in activated B cells. Loss of CD16, hematopoietic cell-derived BAFF, or blocking IC:FcγR regions in vivo diminished the expression of Bcl-6, the frequency of GC and memory B cells, and secondary Ab responses. BAFF also contributed to the maintenance and/or expansion of the follicular helper T cell population, although it was dispensable for their formation. Thus, early Ab responses contribute to the optimal formation of B cell memory through IgG-ICs and BAFF. Our work defines a new role for FcγRs in GC and memory B cell responses.
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Affiliation(s)
- SunAh Kang
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Amanda B Keener
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Shannon Z Jones
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; Curriculum in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | | | | | - Jeffrey C Rathmell
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC 27710
| | - Stephen H Clarke
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Glenn K Matsushima
- Neuroscience Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; and
| | - Jason K Whitmire
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Barbara J Vilen
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599;
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27
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Rose WA, Okragly AJ, Patel CN, Benschop RJ. IL-33 released by alum is responsible for early cytokine production and has adjuvant properties. Sci Rep 2015; 5:13146. [PMID: 26272855 PMCID: PMC4536651 DOI: 10.1038/srep13146] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 07/21/2015] [Indexed: 11/09/2022] Open
Abstract
Human vaccines have used aluminium-based adjuvants (alum) for >80 years despite incomplete understanding of how alum enhances the immune response. Alum can induce the release of endogenous danger signals via cellular necrosis which elicits inflammation-associated cytokines resulting in humoral immunity. IL-33 is proposed to be one such danger signal that is released from necrotic cells. Therefore, we investigated whether there is a role for IL-33 in the adjuvant activity of alum. We show that alum-induced cellular necrosis results in elevated levels of IL-33 following injection in vivo. Alum and IL-33 induce similar increases in IL-5, KC, MCP-1, MIP-1α and MIP-1β; many of which are dependent on IL-33 as shown in IL-33 knockout mice or by using an IL-33-neutralizing recombinant ST2 receptor. Furthermore, IL-33 itself functions as an adjuvant that, while only inducing a marginal primary response, facilitates a robust secondary response comparable to that observed with alum. However, IL-33 is not absolutely required for alum-induced antibody responses since alum mediates similar humoral responses in IL-33 knockout and wild-type mice. Our results provide novel insights into the mechanism of action behind alum-induced cytokine responses and show that IL-33 is sufficient to provide a robust secondary antibody response independently of alum.
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Affiliation(s)
- William A Rose
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285
| | - Angela J Okragly
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285
| | - Chetan N Patel
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285
| | - Robert J Benschop
- Biotechnology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, 46285
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28
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Vermeersch S, Benschop RJ, Van Hecken A, Monteith D, Wroblewski VJ, Grayzel D, de Hoon J, Collins EC. Translational Pharmacodynamics of Calcitonin Gene-Related Peptide Monoclonal Antibody LY2951742 in a Capsaicin-Induced Dermal Blood Flow Model. J Pharmacol Exp Ther 2015; 354:350-7. [PMID: 26116630 DOI: 10.1124/jpet.115.224212] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 06/26/2015] [Indexed: 01/06/2023] Open
Abstract
LY2951742, a monoclonal antibody targeting calcitonin gene-related peptide (CGRP), is being developed for migraine prevention and osteoarthritis pain. To support the clinical development of LY2951742, capsaicin-induced dermal blood flow (DBF) was used as a target engagement biomarker to assess CGRP activity in nonhuman primates and healthy volunteers. Inhibition of capsaicin-induced DBF in nonhuman primates, measured with laser Doppler imaging, was dose dependent and sustained for at least 29 days after a single intravenous injection of the CGRP antibody. This information was used to generate a pharmacokinetic/pharmacodynamic model, which correctly predicted inhibition of capsaicin-induced DBF in humans starting at a single subcutaneous 5-mg dose. As expected, the degree of inhibition in capsaicin-induced DBF increased with higher LY2951742 plasma concentrations. Utilization of this pharmacodynamic biomarker with pharmacokinetic data collected in phase I studies provided the dose-response relationship that assisted in dose selection for the phase II clinical development of LY2951742.
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Affiliation(s)
- Steve Vermeersch
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - Robert J Benschop
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - Anne Van Hecken
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - David Monteith
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - Victor J Wroblewski
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - David Grayzel
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - Jan de Hoon
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
| | - Emily C Collins
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven and University Hospitals Leuven, Campus Gasthuisberg, Leuven, Belgium (S.V., A.V.H., J.d.H.); Eli Lilly and Company, Indianapolis, Indiana (R.J.B., D.M., V.J.W., E.C.C.); and Atlas Venture, Cambridge, Massachusetts (D.G.)
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29
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Benschop RJ, Collins EC, Darling RJ, Allan BW, Leung D, Conner EM, Nelson J, Gaynor B, Xu J, Wang XF, Lynch RA, Li B, McCarty D, Nisenbaum ES, Oskins JL, Lin C, Johnson KW, Chambers MG. Development of a novel antibody to calcitonin gene-related peptide for the treatment of osteoarthritis-related pain. Osteoarthritis Cartilage 2014; 22:578-85. [PMID: 24508775 DOI: 10.1016/j.joca.2014.01.009] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [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: 12/06/2013] [Revised: 01/17/2014] [Accepted: 01/25/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Investigate a role for calcitonin gene-related peptide (CGRP) in osteoarthritis (OA)-related pain. DESIGN Neutralizing antibodies to CGRP were generated de novo. One of these antibodies, LY2951742, was characterized in vitro and tested in pre-clinical in vivo models of OA pain. RESULTS LY2951742 exhibited high affinity to both human and rat CGRP (KD of 31 and 246 pM, respectively). The antibody neutralized CGRP-mediated induction of cAMP in SK-N-MC cells in vitro and capsaicin-induced dermal blood flow in the rat. Neutralization of CGRP significantly reduced pain behavior as measured by weight bearing differential in the rat monoiodoacetate model of OA pain in a dose-dependent manner. Moreover, pain reduction with neutralization of CGRP occurred independently of prostaglandins, since LY2951742 and NSAIDs worked additively in the NSAID-responsive version of the model and CGRP neutralization remained effective in the NSAID non-responsive version of the model. Neutralization of CGRP also provided dose-dependent and prolonged (>60 days) pain reduction in the rat meniscal tear model of OA after only a single injection of LY2951742. CONCLUSIONS LY2951742 is a high affinity, neutralizing antibody to CGRP. Neutralization of CGRP is efficacious in several OA pain models and works independently of NSAID mechanisms of action. LY2951742 holds promise for the treatment of pain in OA patients.
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Affiliation(s)
- R J Benschop
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - E C Collins
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - R J Darling
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - B W Allan
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - D Leung
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - E M Conner
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - J Nelson
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - B Gaynor
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - J Xu
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - X-F Wang
- Eli Lilly & Company, Lilly Biotechnology Center, San Diego, CA 92121, USA.
| | - R A Lynch
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - B Li
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - D McCarty
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - E S Nisenbaum
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | | | - C Lin
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - K W Johnson
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| | - M G Chambers
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA.
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30
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Conway RG, Chernet E, De Rosa DC, Benschop RJ, Need AB, Collins EC, Bean JS, Kalbfleisch JM, Rekhter MD. Glucose metabolic trapping in mouse arteries: nonradioactive assay of atherosclerotic plaque inflammation applicable to drug discovery. PLoS One 2012; 7:e50349. [PMID: 23209718 PMCID: PMC3508896 DOI: 10.1371/journal.pone.0050349] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 10/19/2012] [Indexed: 12/03/2022] Open
Abstract
Background 18F-Fluorodeoxyglucose (FDG)-positron emission tomography (PET) imaging of atherosclerosis in the clinic is based on preferential accumulation of radioactive glucose analog in atherosclerotic plaques. FDG-PET is challenging in mouse models due to limited resolution and high cost. We aimed to quantify accumulation of nonradioactive glucose metabolite, FDG-6-phosphate, in the mouse atherosclerotic plaques as a simple alternative to PET imaging. Methodology/Principal Findings Nonradioactive FDG was injected 30 minutes before euthanasia. Arteries were dissected, and lipids were extracted. The arteries were re-extracted with 50% acetonitrile-50% methanol-0.1% formic acid. A daughter ion of FDG-6-phosphate was quantified using liquid chromatography and mass spectrometry (LC/MS/MS). Thus, both traditional (cholesterol) and novel (FDG-6-phosphate) markers were assayed in the same tissue. FDG-6-phosphate was accumulated in atherosclerotic lesions associated with carotid ligation of the Western diet fed ApoE knockout mice (5.9 times increase compare to unligated carotids, p<0.001). Treatment with the liver X receptor agonist T0901317 significantly (2.1 times, p<0.01) reduced FDG-6-phosphate accumulation 2 weeks after surgery. Anti-atherosclerotic effects were independently confirmed by reduction in lesion size, macrophage number, cholesterol ester accumulation, and macrophage proteolytic activity. Conclusions/Significance Mass spectrometry of FDG-6-phosphate in experimental atherosclerosis is consistent with plaque inflammation and provides potential translational link to the clinical studies utilizing FDG-PET imaging.
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Affiliation(s)
- Richard G. Conway
- Cardiometabolic Diseases and Diabetic Complications, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Eyassu Chernet
- Psychiatric Disorders, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - David C. De Rosa
- ImmunoModulation, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Robert J. Benschop
- ImmunoModulation, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Anne B. Need
- Translational Science, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Emily C. Collins
- Translational Science, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - James S. Bean
- Cardiometabolic Diseases and Diabetic Complications, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - J. Michael Kalbfleisch
- Translational Science, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
| | - Mark D. Rekhter
- Cardiometabolic Diseases and Diabetic Complications, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana, United States of America
- * E-mail:
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31
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DeRosa DC, Ryan PJ, Okragly A, Witcher DR, Benschop RJ. Tumor-derived death receptor 6 modulates dendritic cell development. Cancer Immunol Immunother 2008; 57:777-87. [PMID: 17962943 PMCID: PMC11030700 DOI: 10.1007/s00262-007-0413-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Accepted: 10/09/2007] [Indexed: 12/28/2022]
Abstract
Studies in murine models of cancer as well as in cancer patients have demonstrated that the immune response to cancer is often compromised. This paradigm is viewed as one of the major mechanisms of tumor escape. Many therapies focus on employing the professional antigen presenting dendritic cells (DC) as a strategy to overcome immune inhibition in cancer patients. Death receptor 6 (DR6) is an orphan member of the tumor necrosis factor receptor superfamily (TNFRSF21). It is overexpressed on many tumor cells and DR6(-/-) mice display altered immunity. We investigated whether DR6 plays a role in tumorigenesis by negatively affecting the generation of anti-tumor activity. We show that DR6 is uniquely cleaved from the cell surface of tumor cell lines by the membrane-associated matrix metalloproteinase (MMP)-14, which is often overexpressed on tumor cells and is associated with malignancy. We also demonstrate that >50% of monocytes differentiating into DC die when the extracellular domain of DR6 is present. In addition, DR6 affects the cell surface phenotype of the resulting immature DC and changes their cytokine production upon stimulation with LPS/IFN-gamma. The effects of DR6 are mostly amended when these immature DC are matured with IL-1beta/TNF-alpha, as measured by cell surface phenotype and their ability to present antigen. These results implicate MMP-14 and DR6 as a mechanism tumor cells can employ to actively escape detection by the immune system by affecting the generation of antigen presenting cells.
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Affiliation(s)
- David C. DeRosa
- Eli Lilly and Company, BioTherapeutic Discovery Research, Indianapolis, IN 46285 USA
| | - Paul J. Ryan
- Eli Lilly and Company, BioTherapeutic Discovery Research, Indianapolis, IN 46285 USA
| | - Angela Okragly
- Eli Lilly and Company, BioTherapeutic Discovery Research, Indianapolis, IN 46285 USA
| | - Derrick R. Witcher
- Eli Lilly and Company, BioTherapeutic Discovery Research, Indianapolis, IN 46285 USA
| | - Robert J. Benschop
- Eli Lilly and Company, BioTherapeutic Discovery Research, Indianapolis, IN 46285 USA
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32
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Merrell KT, Benschop RJ, Gauld SB, Aviszus K, Decote-Ricardo D, Wysocki LJ, Cambier JC. Identification of Anergic B Cells within a Wild-Type Repertoire. Immunity 2006; 25:953-62. [PMID: 17174121 DOI: 10.1016/j.immuni.2006.10.017] [Citation(s) in RCA: 193] [Impact Index Per Article: 10.7] [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: 01/20/2006] [Revised: 06/30/2006] [Accepted: 10/23/2006] [Indexed: 01/10/2023]
Abstract
The contribution of anergy to silencing of autoreactive B cells in physiologic settings is unknown. By comparing anergic and nonanergic immunoglobulin-transgenic mouse strains, we defined a set of surface markers that were used for presumptive identification of an anergic B cell cohort within a normal repertoire. Like anergic transgenic B cells, these physiologic anergic cells exhibited high basal intracellular free calcium and did not mobilize calcium, initiate tyrosine phosphorylation, proliferate, upregulate activation markers, or mount an immune response upon antigen-receptor stimulation. Autoreactive B cells were overrepresented in this cohort. On the basis of the frequency and lifespan of these cells, it appears that as many as 50% of newly produced B cells are destined to become anergic. In conclusion, our findings indicate that anergy is probably the primary mechanism by which autoreactive B cells are silenced. Thus maintenance of the unresponsiveness of anergic cells is critical for prevention of autoimmunity.
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Affiliation(s)
- Kevin T Merrell
- Integrated Department of Immunology, University of Colorado Health Sciences Center and National Jewish Medical Research Center, Denver, Colorado 80206, USA
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33
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Gauld SB, Benschop RJ, Merrell KT, Cambier JC. Maintenance of B cell anergy requires constant antigen receptor occupancy and signaling. Nat Immunol 2005; 6:1160-7. [PMID: 16200069 DOI: 10.1038/ni1256] [Citation(s) in RCA: 169] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2005] [Accepted: 08/15/2005] [Indexed: 11/08/2022]
Abstract
Immunological tolerance can be mediated by anergy, in which self-reactive B cells persist in the periphery yet remain unresponsive to immunogen. Whether anergy is induced after transient exposure to self antigen and is 'remembered' or requires continuous antigen receptor occupancy and transduction of signals remains unclear. We have explored this using an immunoglobulin-transgenic mouse in which B cells were hapten specific (arsonate) yet cross-reacted with a self antigen that induced anergy in vivo. Many features of anergic cells were rapidly reversed after dissociation of self antigen using hapten competition and these cells regained antigen responsiveness. Our findings indicate that continuous binding of antigen and subsequent receptor signaling are essential for the maintenance of anergy.
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Affiliation(s)
- Stephen B Gauld
- Integrated Department of Immunology, University of Colorado Health Sciences Center and National Jewish Medical and Research Center, Denver, Colorado 80206, USA
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Schmidt CS, Liu J, Zhang T, Song HY, Sandusky G, Mintze K, Benschop RJ, Glasebrook A, Yang DD, Na S. Enhanced B cell expansion, survival, and humoral responses by targeting death receptor 6. J Exp Med 2003; 197:51-62. [PMID: 12515813 PMCID: PMC2193799 DOI: 10.1084/jem.20020617] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Targeted disruption of death receptor (DR)6 results in enhanced CD4(+) T cell expansion and T helper cell type 2 differentiation after stimulation. Similar to T cells, DR6 is expressed on resting B cells but is down-regulated upon activation. We examined DR6(-/-) B cell responses both in vitro and in vivo. In vitro, DR6(-/-) B cells undergo increased proliferation in response to anti-immunoglobulin M, anti-CD40, and lipopolysaccharide. This hyperproliferative response was due, at least in part, to both increased cell division and reduced cell apoptosis when compared with wild-type B cells. Consistent with these observations, increased nuclear levels and activity of nuclear factor kappaB transcription factor, c-Rel, and elevated Bcl-x(l) expression were observed in DR6(-/-) B cells upon stimulation. In addition, DR6(-/-) B cells exhibited higher surface levels of CD86 upon activation and were more effective as antigen-presenting cells in an allogeneic T cell proliferation response. DR6(-/-) mice exhibited enhanced germinal center formation and increased titers of immunoglobulins to T-dependent as well as T-independent type I and II antigens. This is the first demonstration of a regulatory role of DR6 in the activation and function of B cells.
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Affiliation(s)
- Clint S Schmidt
- Department of Bioresearch Technologies and Proteins, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285, USA
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35
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Benschop RJ, Brandl E, Chan AC, Cambier JC. Unique signaling properties of B cell antigen receptor in mature and immature B cells: implications for tolerance and activation. J Immunol 2001; 167:4172-9. [PMID: 11591737 DOI: 10.4049/jimmunol.167.8.4172] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Immature B cells display increased sensitivity to tolerance induction compared with their mature counterparts. The molecular mechanisms underlying these differences are poorly defined. In this study, we demonstrate unique maturation stage-dependent differences in B cell Ag receptor (BCR) signaling, including BCR-mediated calcium mobilization responses. Immature B cells display greater increases in intracellular calcium concentrations following Ag stimulation. This has consequences for the induction of biologically relevant responses: immature B cells require lower Ag concentrations for activation than mature B cells, as measured by induction of receptor editing and CD86 expression, respectively. BCR-induced tyrosine phosphorylation of CD79a, Lyn, B cell linker protein, and phospholipase Cgamma2 is enhanced in immature B cells and they exhibit greater capacitative calcium entry in response to Ag. Moreover, B cell linker protein, Bruton's tyrosine kinase, and phospholipase Cgamma2, which are crucial for the induction of calcium mobilization responses, are present at approximately 3-fold higher levels in immature B cells, potentially contributing to increased mobilization of calcium. Consistent with this possibility, we found that the previously reported lack of inositol-1,4,5-triphosphate production in immature B cells may be explained by enhanced inositol-1,4,5-triphosphate breakdown. These data demonstrate that multiple mechanisms guarantee increased Ag-induced mobilization of calcium in immature B cells and presumably ensure elimination of autoreactive B cells from the repertoire.
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Affiliation(s)
- R J Benschop
- Integrated Department of Immunology, University of Colorado School of Medicine and National Jewish Medical and Research Center, Denver, CO 80206, USA
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36
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Benschop RJ, Aviszus K, Zhang X, Manser T, Cambier JC, Wysocki LJ. Activation and anergy in bone marrow B cells of a novel immunoglobulin transgenic mouse that is both hapten specific and autoreactive. Immunity 2001; 14:33-43. [PMID: 11163228 DOI: 10.1016/s1074-7613(01)00087-5] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Available evidence indicates that B cell tolerance is attained by receptor editing, anergy, or clonal deletion. Here, we describe a p-azophenylarsonate (Ars)-specific immunoglobulin transgenic mouse in which B cells become anergic as a consequence of cross-reaction with autoantigen in the bone marrow. Developing bone marrow B cells show no evidence of receptor editing but transiently upregulate activation markers and appear to undergo accelerated development. Mature B cells are present in normal numbers but are refractory to BCR-mediated induction of calcium mobilization, tyrosine phosphorylation, and antibody responses. Activation marker expression and acquisition of the anergic phenotype is prevented in bone marrow cultures by monovalent hapten. In this model, it appears that induction of anergy in B cells can be prevented by monovalent hapten competing with autoantigen for the binding site.
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Affiliation(s)
- R J Benschop
- Integrated Department of Immunology, National Jewish Medical and Research Center and, University of Colorado School of Medicine, Denver, CO 80206, USA
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37
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Abstract
BACKGROUND An abnormal immune response may play a pathogenetic role in chronic pancreatitis. However, to date characterization of the systemic immunological changes in patients with chronic pancreatitis has not been undertaken. METHODS Lymphocyte phenotypes and proliferation ((3)H-thymidine) after stimulation with mitogens and interleukin-2 were studied in peripheral mononuclear cells from 11 patients with chronic pancreatitis (alcohol-induced n = 6; idiopathic pancreatitis n = 5). The natural killer cell activity was investigated in a (51)Cr release cytotoxicity assay. In vitro cytokine release of stimulated mononuclear cells was measured. RESULTS Flow cytometric studies showed a significant decrease in the percentage of circulating CD8+, CD56+ and CD25+ cells in patients with chronic pancreatitis independent of the etiology. Comparing all patients with chronic pancreatitis to controls, the proliferation rate was not significantly increased, but patients with pain (n = 5) showed increased proliferation in comparison to patients without pain (n = 6). No significant difference in natural killer cytotoxicity was observed. The in vitro release of tumor necrosis factor-alpha and interleukin-10 by stimulated mononuclear cells was increased. CONCLUSIONS Chronic pancreatitis is accompanied by systemic immune dysregulation. The observed changes in peripheral mononuclear cells reveal additional evidence that the cell-mediated immune response may contribute to the development of pain and tissue destruction in chronic pancreatitis.
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Affiliation(s)
- J Ockenga
- Department of Gastroenterology and Hepatology, Medical School of Hannover, Germany.
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38
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Brauweiler A, Tamir I, Dal Porto J, Benschop RJ, Helgason CD, Humphries RK, Freed JH, Cambier JC. Differential regulation of B cell development, activation, and death by the src homology 2 domain-containing 5' inositol phosphatase (SHIP). J Exp Med 2000; 191:1545-54. [PMID: 10790429 PMCID: PMC2213431 DOI: 10.1084/jem.191.9.1545] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Although the Src homology 2 domain-containing 5' inositol phosphatase (SHIP) is a well-known mediator of inhibitory signals after B cell antigen receptor (BCR) coaggregation with the low affinity Fc receptor, it is not known whether SHIP functions to inhibit signals after stimulation through the BCR alone. Here, we show using gene-ablated mice that SHIP is a crucial regulator of BCR-mediated signaling, B cell activation, and B cell development. We demonstrate a critical role for SHIP in termination of phosphatidylinositol 3,4,5-triphosphate (PI[3,4,5]P(3)) signals that follow BCR aggregation. Consistent with enhanced PI(3,4,5)P(3) signaling, we find that splenic B cells from SHIP-deficient mice display enhanced sensitivity to BCR-mediated induction of the activation markers CD86 and CD69. We further demonstrate that SHIP regulates the rate of B cell development in the bone marrow and spleen, as B cell precursors from SHIP-deficient mice progress more rapidly through the immature and transitional developmental stages. Finally, we observe that SHIP-deficient B cells have increased resistance to BCR-mediated cell death. These results demonstrate a central role for SHIP in regulation of BCR signaling and B cell biology, from signal driven development in the bone marrow and spleen, to activation and death in the periphery.
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Affiliation(s)
- Anne Brauweiler
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - Idan Tamir
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - Joseph Dal Porto
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - Robert J. Benschop
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - Cheryl D. Helgason
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, British Columbia V5Z 1L3, Canada
| | - R. Keith Humphries
- Terry Fox Laboratory, British Columbia Cancer Agency, Vancouver, British Columbia V5Z 1L3, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - John H. Freed
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - John C. Cambier
- Department of Immunology, National Jewish Medical and Research Center, Denver, Colorado 80206
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
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39
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Benschop RJ, Melamed D, Nemazee D, Cambier JC. Distinct signal thresholds for the unique antigen receptor-linked gene expression programs in mature and immature B cells. J Exp Med 1999; 190:749-56. [PMID: 10499913 PMCID: PMC2195635 DOI: 10.1084/jem.190.6.749] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Although it is well established that immature B lymphocytes are exquisitely sensitive to tolerance induction compared with their mature counterparts, the molecular basis for this difference is unknown. We demonstrate that signaling by B cell antigen receptors leads to distinct and mutually exclusive biologic responses in mature and immature B cells: upregulation of CD86, CD69, and MHC class II in mature cells and receptor editing in immature cells. These responses can be induced simply by elevation of intracellular free calcium levels, as occurs after receptor aggregation. Importantly, induction of immature B cell responses requires much smaller increases in intracellular free calcium than does induction of mature B cell responses. These differences in biologic response and sensitivity to intracellular free calcium likely contributes to selective elimination at the immature stage of even those B cells that express low affinity for self-antigens.
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MESH Headings
- Animals
- Antigens, CD/genetics
- Antigens, CD/immunology
- Antigens, Differentiation, T-Lymphocyte/genetics
- Antigens, Differentiation, T-Lymphocyte/immunology
- B-Lymphocytes/cytology
- B-Lymphocytes/immunology
- B7-2 Antigen
- Cell Differentiation/immunology
- Gene Expression Regulation/immunology
- Histocompatibility Antigens Class II/genetics
- Histocompatibility Antigens Class II/immunology
- Lectins, C-Type
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/immunology
- Mice
- Mice, Transgenic
- RNA Editing/immunology
- Receptors, Antigen, B-Cell/genetics
- Receptors, Antigen, B-Cell/immunology
- Up-Regulation
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Affiliation(s)
- Robert J. Benschop
- Division of Basic Sciences, Department of Pediatrics, National Jewish Medical and Research Center
| | - Doron Melamed
- Division of Basic Sciences, Department of Pediatrics, National Jewish Medical and Research Center
| | - David Nemazee
- Division of Basic Sciences, Department of Pediatrics, National Jewish Medical and Research Center
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
| | - John C. Cambier
- Division of Basic Sciences, Department of Pediatrics, National Jewish Medical and Research Center
- Department of Immunology, University of Colorado Health Sciences Center, Denver, Colorado 80206
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40
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Abstract
Constitutive signal transduction by B cell antigen-receptors and/or their surrogates appears to be critical for progression through multiple developmental checkpoints and for survival of mature B cells in the periphery. Antigen-induced signaling via the B cell receptor can compensate for defects in constitutive signaling and initiates receptor editing, apoptosis and anergy in normal mice - purging the repertoire of autoreactive cells. Thus development and survival of mature B cells seem to require continuous receptor signaling of a defined amplitude.
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Affiliation(s)
- R J Benschop
- Division of Basic Sciences, Department of Pediatrics, National Jewish Medical and Research Center, 1400 Jackson Street, Denver, CO 80206, USA
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41
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Benschop RJ, Geenen R, Mills PJ, Naliboff BD, Kiecolt-Glaser JK, Herbert TB, van der Pompe G, Miller GE, Matthews KA, Godaert GL, Gilmore SL, Glaser R, Heijnen CJ, Dopp JM, Bijlsma JW, Solomon GF, Cacioppo JT. Cardiovascular and immune responses to acute psychological stress in young and old women: a meta-analysis. Psychosom Med 1998; 60:290-6. [PMID: 9625216 DOI: 10.1097/00006842-199805000-00015] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [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] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To describe the relationships between cardiovascular and natural killer (NK) cell number changes on acute psychological stress in women. METHOD Data from eight different studies were analyzed. A total of 128 healthy female subjects, 85 younger (18-45 years) and 43 older (49-87 years), had been subjected to a speech stressor (N = 80) or a mental effort stressor (N = 48), mental arithmetic, or the Stroop test. Correlations between changes in NK cell numbers, systolic (SBP) and diastolic (DBP) blood pressure, and heart rate (HR) were computed. Meta-analysis programs were used to study correlations across studies and to examine whether correlations differed with stressors or age. RESULTS In all studies, significant increases over baseline were observed for each variable. Across studies, the mean weighted r between changes in HR, DBP, and SBP was medium (rw = .25) to large (rw = .64). A medium to large average correlation between HR and NK changes (rw = .37) was observed, whereas average correlations of changes in NK cell numbers with blood pressure changes were small to medium (rw < or = .23). Correlations between changes in NK cell numbers and cardiovascular variables were homogeneous across studies, whereas mutual correlations between cardiovascular variables were heterogeneous. One moderator variable showed itself: correlations between HR and DBP reactions were larger in studies with older than younger subjects. CONCLUSION NK cell changes and HR responses induced by acute stress in women are regulated, to some extent, by the same mechanisms. Neither the type of stressor nor age seem to be very important when considering correlations between NK cell and cardiovascular changes. This study integrates information about NK cell and cardiovascular responses in women that can be used as reference material in future studies.
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Affiliation(s)
- R J Benschop
- The National Jewish Medical and Research Center, Denver, Colorado, USA
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42
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Oberbeck R, Schürmeyer TH, Jacobs R, Benschop RJ, Sommer B, Schmidt RE, Schedlowski M. Effects of beta-adrenoceptor-blockade on stress-induced adrenocorticotrophin release in humans. Eur J Appl Physiol Occup Physiol 1998; 77:523-6. [PMID: 9650737 DOI: 10.1007/s004210050370] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We investigated the mechanisms of stress-induced alterations in adrenocorticotrophin (ACTH) release. Tandem parachutists received either a placebo or the beta-adrenoceptor antagonist propranolol prior to a first time parachute jump. Blood samples were drawn 4 h before, immediately after, and 1 h after the jump. Cortisol and catecholamine concentrations displayed a significant stress-induced increase in both groups. The ACTH plasma concentrations significantly increased in the placebo and the propranolol group, with significantly more pronounced changes in the propranolol-treated subjects compared to the placebo group. These data demonstrated a stress-induced increase of ACTH plasma concentrations in humans that was enhanced by beta-blockade.
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Affiliation(s)
- R Oberbeck
- Division of Clinical Immunology, Hannover Medical School, Germany
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43
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Abstract
OBJECTIVE Although stressor uncontrollability has been shown to suppress immune responses in animals and for human subjects, the results have been inconsistent. We reanalyzed results of our previous study regarding stress-related immune deviation in man, to establish whether perceived uncontrollability of an acute stressor acts as a co-determinant in the observed changes in immunological parameters. METHOD Three types of cognitive reactions to an acute interpersonal stressor were assessed: "motivation," "uncontrollability," and "guiltiness." Stress-induced changes in the number of several types of immune cells in peripheral blood and proliferative responses of lymphocytes to antigens and mitogens were assessed. RESULTS In comparison with control subjects and with subjects perceiving high control over the experimental stress situation, the subject perceiving low control showed a stressor-induced decrease in the number of T helper cells. Reversely, subjects perceiving high control showed an increase in the number of B cells as opposed to the other two groups. The effects of perceived uncontrollability could not be accounted for by mood changes, but they were related to previously experienced life stress. CONCLUSIONS Perceived uncontrollability of an acute stressor can have immuno-modulating effects over and above those of the stressor per se.
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Affiliation(s)
- J F Brosschot
- Department of Clinical Psychology, University of Amsterdam, The Netherlands. KP
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44
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Oberbeck R, Benschop RJ, Jacobs R, Hosch W, Jetschmann JU, Schürmeyer TH, Schmidt RE, Schedlowski M. Endocrine mechanisms of stress-induced DHEA-secretion. J Endocrinol Invest 1998; 21:148-53. [PMID: 9591209 DOI: 10.1007/bf03347293] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [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: 02/07/2023]
Abstract
Acute psychological stress of a first time parachute jump stimulated DHEA and cortisol secretion in healthy volunteers. A significant shift from cortisol to DHEA occurred during this stress exposure. This effect was more pronounced in subjects receiving the beta-adrenoceptor antagonist propranolol prior to the jump. In contrast, infusion of epinephrine (0.10 microgram/kg/min) or norepinephrine (0.15 microgram/kg/min) for 20 min neither affected DHEA plasma levels nor the DHEA/cortisol ratio. However, pretreatment with propranolol resulted in a significant increase of the DHEA/cortisol ratio upon infusion of the beta-adrenoceptor agonist epinephrine. These data demonstrate that during acute psychological stress stimulation of adrenal steroid release is accompanied by a shift towards DHEA. Augmentation of this effect by beta-adrenoceptor blockade indicates a beta-adrenoceptor-dependent mechanism affecting DHEA release.
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Affiliation(s)
- R Oberbeck
- Division of Clinical Immunology, Hannover Medical School, Germany
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45
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Melamed D, Benschop RJ, Cambier JC, Nemazee D. Developmental regulation of B lymphocyte immune tolerance compartmentalizes clonal selection from receptor selection. Cell 1998; 92:173-82. [PMID: 9458042 DOI: 10.1016/s0092-8674(00)80912-5] [Citation(s) in RCA: 188] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
B lymphocyte development is a highly ordered process that involves immunoglobulin gene rearrangements, antigen receptor expression, and a learning process that minimizes the development of cells with reactivity to self tissue. Two distinct mechanisms for immune tolerance have been defined that operate during early bone marrow stages of B cell development: apoptosis, which eliminates clones of cells, and receptor editing, which spares the cells but genetically reprograms their autoreactive antigen receptors through nested immunoglobulin L chain gene rearrangements. We show here that sensitivity to antigen-induced apoptosis arises relatively late in B cell development and is preceded by a functionally distinct developmental stage capable of receptor editing. This regulation compartmentalizes clonal selection from receptor selection.
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Affiliation(s)
- D Melamed
- Department of Pediatrics, National Jewish Medical and Research Center, Denver, Colorado 80206, USA
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46
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Abstract
Natural killer (NK) cell circulation is subject to adrenergic regulation. Exactly how NK cells are released into the circulation is unknown. In an attempt to identify some of the mechanisms, the present report focuses on aspects of adhesion regulation of NK cells. Results demonstrate that interactions between NK and endothelial cells (EC) in vitro can be reduced by beta 2-adrenoceptor stimulation for as long as the receptor stimulation occurs. The level of soluble adhesion molecules (sICAM-1, sE-selectin, sVCAM-1) in vivo remained unchanged during adrenaline infusion. In vitro analyses further reveal the requirement for Ca2+/Mg2+ in NK-EC adhesion. Blocking studies indicate the involvement of several members of the beta 1(CD29)- and beta 2(CD18)-integrin family, reducing NK cell adhesion by 28 to 39%. Stimulation of beta 2-adrenoceptors in the presence of these blocking antibodies further reduced NK adhesion by an average of 22%. Analysis of NK cell adhesion to various extracellular matrix components demonstrates significant NK cell adhesion to fibronectin but much less to laminin or collagens I and IV. NK cell adhesion to fibronectin was reduced by 50% upon beta 2-adrenoceptor stimulation, independent of the VLA-4/VLA-5 binding site on fibronectin. Together these results contribute to understanding the influences of beta-adrenoceptor stimulation on NK cell circulation and adhesion.
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Affiliation(s)
- R J Benschop
- Department of Clinical Immunology, Hannover Medical School, Germany.
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47
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Jetschmann JU, Benschop RJ, Jacobs R, Kemper A, Oberbeck R, Schmidt RE, Schedlowski M. Expression and in-vivo modulation of alpha- and beta-adrenoceptors on human natural killer (CD16+) cells. J Neuroimmunol 1997; 74:159-64. [PMID: 9119969 DOI: 10.1016/s0165-5728(96)00221-4] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.8] [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: 02/04/2023]
Abstract
Expression and in-vivo modulation of beta- and alpha-adrenoceptors on peripheral human natural killer (CD16+) cells was investigated. Ligand binding studies revealed that CD16+ lymphocytes express beta2, alpha1-, alpha2- but not beta1-adrenoceptors. Infusion of adrenaline, but not noradrenaline, significantly decreased beta2- and alpha1-adrenoceptor numbers on NK cells. Both catecholamines did not appreciably alter alpha2-adrenoceptor numbers. Additional analyses showed that adrenaline administration increases alpha2-adrenoceptor numbers on peripheral mononuclear blood cells (PBMC) and T-cell subsets (CD4+, CD8+) in contrast to decreased receptor numbers on CD16+ cells. These data demonstrate a specific effect of increasing levels of circulating catecholamines on beta2-adrenoceptors on NK cells.
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Affiliation(s)
- J U Jetschmann
- Division of Clinical Immunology, Hannover Medical School, Germany
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48
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Abstract
Recent studies demonstrate that acute psychological stress in man affects lymphocyte circulation. It has been suggested that catecholamines are responsible for these changes. The present review summarizes findings regarding catecholamine-induced lympho- and leukocytosis, starting with observations dating back to the beginning of this century. Particular attention is given to the mechanisms of this phenomenon and the potential site of origin of newly appearing leukocytes. Characteristically, two phases are recognized after catecholamine administration: a quick (<30 min) mobilization of lymphocytes, followed by an increase in granulocyte numbers with decreasing lymphocyte numbers. Many studies have shown that catecholamines predominantly affect natural killer (NK) cell and granulocyte circulation, whereas T- and B-cell numbers remain relatively unaffected. The changes in lymphocyte circulation seem to be mainly mediated via activation of beta2-adrenoceptors, whereas granulocyte increases involve alpha-adrenoceptor stimulation. Results further indicate that the marginal pool and the spleen are the major sources for freshly recruited lymphocytes, whereas granulocytes are predominantly released from the marginal pool and the lung. Results from acute psychological stress or physical exercise models corroborate the results obtained with catecholamine administration. Together, the data demonstrate that components of the innate immune system participate in the classical fight/flight response.
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Affiliation(s)
- R J Benschop
- National Jewish Center, Division of Basic Sciences, Denver, Colorado, 80206, USA
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49
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Benschop RJ, Jacobs R, Sommer B, Schürmeyer TH, Raab JR, Schmidt RE, Schedlowski M. Modulation of the immunologic response to acute stress in humans by beta-blockade or benzodiazepines. FASEB J 1996; 10:517-24. [PMID: 8647351 DOI: 10.1096/fasebj.10.4.8647351] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Acute stress evokes immediate responses in the cardiovascular endocrine, and immune systems. In particular, the number and activity of natural killer (NK) lymphocytes increase after stress. Here, we investigate the possibility to pharmacologically interfere with these stress-induced immunologic changes. Twenty-five healthy males were subjected to an acute stressor, a first-time tandem parachute jump. Subjects were randomly assigned to a beta-adrenoceptor antagonist (propranolol), a benzodiazepine (alprazolam), or placebo group. To analyze the role of the spleen in lymphocyte redistribution, splenectomized subjects performed a parachute jump. Propranolol, but no alprazolam, inhibited the heart rate increase during jumping. Increases in epinephrine and cortisol in the propranolol group were comparable to placebo, but were attenuated by alprazolam. The number and activity of NK cells significantly increased in the placebo group but not in the propranolol group immediately after stress. Alprazolam treatment did not alter the increase in NK cell numbers but did inhibit the increase in NK activity. In splenectomized subjects, NK cell numbers, but not NK activity, increased as in placebo subjects. We conclude that stress-induced changes in the immune system are controlled by beta-adrenergic mechanisms and only partly depend on the spleen; central interference with alprazolam differentially affects stress-induced changes in the NK cell compartment.
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Affiliation(s)
- R J Benschop
- Division of Clinical Immunology, Hannover Medical School, Germany
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50
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Schedlowski M, Hosch W, Oberbeck R, Benschop RJ, Jacobs R, Raab HR, Schmidt RE. Catecholamines modulate human NK cell circulation and function via spleen-independent beta 2-adrenergic mechanisms. J Immunol 1996; 156:93-9. [PMID: 8598500] [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: 01/31/2023]
Abstract
Increases in catecholamines have been shown to induce changes in migration of lymphocytes, in particular NK cells. To analyze the mechanisms of catecholamine-induced NK cell trafficking, normal healthy male human subjects and splenectomized individuals were infused with either adrenaline (0.10 microgram/kg/min), noradrenaline (0.15 microgram/kg/min), or NaCl i.v. for 20 min. Lymphocyte subsets (CD3+, CD4+, CD8+) transiently increased after administration of both catecholamines, with most pronounced increases (up to 600%) in NK cell numbers (CD16+ or CD56+) after infusion of adrenaline. These changes in NK cell numbers and function were accompanied neither by alterations in expression of adhesion molecules (CD11a), CD11b, CD31, CD43, CD44, CD62L) on NK cells nor by changes in plasma concentrations of soluble (s) adhesion molecules (sVCAM-1, sICAM-1, sE-selectin). Comparable increases in lymphocyte subsets were observed in splenectomized subjects, suggesting lymphocyte recruitment from other sources than the spleen. Furthermore, catecholamine-induced increases in lymphocyte subsets could be inhibited by pretreatment with the nonselective beta-adrenoceptor antagonist propranolol, but not by the beta1-selective antagonist bisoprolol. These data demonstrate that adrenaline and noradrenaline modulate the migratory capacity of human NK cells via spleen-independent beta 2-adrenoceptor mechanism.
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Affiliation(s)
- M Schedlowski
- Department of Medicine and Dermatology, Hannover Medical School, Germany
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