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Ramarapu R, Wulcan JM, Chang H, Moore PF, Vernau W, Keller SM. Single cell RNA-sequencing of feline peripheral immune cells with V(D)J repertoire and cross species analysis of T lymphocytes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.21.595010. [PMID: 38826195 PMCID: PMC11142102 DOI: 10.1101/2024.05.21.595010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Introduction The domestic cat (Felis catus) is a valued companion animal and a model for virally induced cancers and immunodeficiencies. However, species-specific limitations such as a scarcity of immune cell markers constrain our ability to resolve immune cell subsets at sufficient detail. The goal of this study was to characterize circulating feline T cells and other leukocytes based on their transcriptomic landscape and T-cell receptor repertoire using single cell RNA-sequencing. Methods Peripheral blood from 4 healthy cats was enriched for T cells by flow cytometry cell sorting using a mouse anti-feline CD5 monoclonal antibody. Libraries for whole transcriptome, alpha/beta T cell receptor transcripts and gamma/delta T cell receptor transcripts were constructed using the 10x Genomics Chromium Next GEM Single Cell 5' reagent kit and the Chromium Single Cell V(D)J Enrichment Kit with custom reverse primers for the feline orthologs. Results Unsupervised clustering of whole transcriptome data revealed 7 major cell populations - T cells, neutrophils, monocytic cells, B cells, plasmacytoid dendritic cells, mast cells and platelets. Sub cluster analysis of T cells resolved naive (CD4+ and CD8+), CD4+ effector T cells, CD8+ cytotoxic T cells and gamma/delta T cells. Cross species analysis revealed a high conservation of T cell subsets along an effector gradient with equitable representation of veterinary species (horse, dog, pig) and humans with the cat. Our V(D)J repertoire analysis demonstrated a skewed T-cell receptor alpha gene usage and a restricted T-cell receptor gamma junctional length in CD8+ cytotoxic T cells compared to other alpha/beta T cell subsets. Among myeloid cells, we resolved three clusters of classical monocytes with polarization into pro- and anti-inflammatory phenotypes in addition to a cluster of conventional dendritic cells. Lastly, our neutrophil sub clustering revealed a larger mature neutrophil cluster and a smaller exhausted/activated cluster. Discussion Our study is the first to characterize subsets of circulating T cells utilizing an integrative approach of single cell RNA-sequencing, V(D)J repertoire analysis and cross species analysis. In addition, we characterize the transcriptome of several myeloid cell subsets and demonstrate immune cell relatedness across different species.
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Affiliation(s)
- Raneesh Ramarapu
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
- Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Judit M Wulcan
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
| | - Haiyang Chang
- Department of Mathematics and Statistics, University of Guelph, Guelph, ON, Canada
| | - Peter F Moore
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
| | - William Vernau
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
| | - Stefan M Keller
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA, United States
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Zhang T, Chen Z, Xie L, Xu R, Chen L, Jia T, Shi W, Wang Y, Song Y, Han Q, Xia X, Yuan T, Zhang J. A fusion protein of vimentin with Fc fragment inhibits Japanese encephalitis virus replication. Front Vet Sci 2024; 11:1368725. [PMID: 38500602 PMCID: PMC10944967 DOI: 10.3389/fvets.2024.1368725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/21/2024] [Indexed: 03/20/2024] Open
Abstract
Japanese encephalitis virus (JEV), a member of the Flaviviridae family and a flavivirus, is known to induce acute encephalitis. Vimentin protein has been identified as a potential receptor for JEV, engaging in interactions with the viral membrane protein. The Fc fragment, an integral constituent of immunoglobulins, plays a crucial role in antigen recognition by dendritic cells (DCs) or phagocytes, leading to subsequent antigen presentation, cytotoxicity, or phagocytosis. In this study, we fused the receptor of JEV vimentin with the Fc fragment of IgG and expressed the resulting vimentin-Fc fusion protein in Escherichia coli. Pull-down experiments demonstrated the binding ability of the vimentin-Fc fusion protein to JEV virion in vitro. Additionally, we conducted inhibition assays at the cellular level, revealing the ability of vimentin-Fc protein suppressing JEV replication, it may be a promising passive immunotherapy agent for JEV. These findings pave the way for potential therapeutic strategies against JEV.
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Affiliation(s)
- Taoping Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- Yunnan Provincial Key Laboratory of Clinical Virology, The First People's Hospital of Yunnan Province, Kunming, China
- Yunnan Province Clinical Research Center for Gynecological and Obstetric Disease, Kunming, China
| | - Zhixin Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Lyu Xie
- Institute of Basic Medical Sciences, School of Basic Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruixian Xu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Lu Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Ting Jia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Wengang Shi
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Yongbo Wang
- Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, China
| | - Yuzhu Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Qinqin Han
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Xueshan Xia
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Tao Yuan
- Yunnan Provincial Key Laboratory of Clinical Virology, The First People's Hospital of Yunnan Province, Kunming, China
- Department of Gynecology, The First People's Hospital of Yunnan Province, Kunming, China
| | - Jinyang Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- Yunnan Province Clinical Research Center for Gynecological and Obstetric Disease, Kunming, China
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Sernoskie SC, Bonneil É, Thibault P, Jee A, Uetrecht J. Involvement of Extracellular Vesicles in the Proinflammatory Response to Clozapine: Implications for Clozapine-Induced Agranulocytosis. J Pharmacol Exp Ther 2024; 388:827-845. [PMID: 38262745 DOI: 10.1124/jpet.123.001970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/27/2023] [Accepted: 12/08/2023] [Indexed: 01/25/2024] Open
Abstract
Most idiosyncratic drug reactions (IDRs) appear to be immune-mediated, but mechanistic events preceding severe reaction onset remain poorly defined. Damage-associated molecular patterns (DAMPs) may contribute to both innate and adaptive immune phases of IDRs, and changes in extracellular vesicle (EV) cargo have been detected post-exposure to several IDR-associated drugs. To explore the hypothesis that EVs are also a source of DAMPs in the induction of the immune response preceding drug-induced agranulocytosis, the proteome and immunogenicity of clozapine- (agranulocytosis-associated drug) and olanzapine- (non-agranulocytosis-associated drug) exposed EVs were compared in two preclinical models: THP-1 macrophages and Sprague-Dawley rats. Compared with olanzapine, clozapine induced a greater increase in the concentration of EVs enriched from both cell culture media and rat serum. Moreover, treatment of drug-naïve THP-1 cells with clozapine-exposed EVs induced an inflammasome-dependent response, supporting a potential role for EVs in immune activation. Proteomic and bioinformatic analyses demonstrated an increased number of differentially expressed proteins with clozapine that were enriched in pathways related to inflammation, myeloid cell chemotaxis, wounding, transforming growth factor-β signaling, and negative regulation of stimuli response. These data indicate that, although clozapine and olanzapine exposure both alter the protein cargo of EVs, clozapine-exposed EVs carry mediators that exhibit significantly greater immunogenicity. Ultimately, this supports the working hypothesis that drugs associated with a risk of IDRs induce cell stress, release of proinflammatory mediators, and early immune activation that precedes severe reaction onset. Further studies characterizing EVs may elucidate biomarkers that predict IDR risk during development of drug candidates. SIGNIFICANCE STATEMENT: This work demonstrates that clozapine, an idiosyncratic drug-induced agranulocytosis (IDIAG)-associated drug, but not olanzapine, a safer structural analogue, induces an acute proinflammatory response and increases extracellular vesicle (EV) release in two preclinical models. Moreover, clozapine-exposed EVs are more immunogenic, as measured by their ability to activate inflammasomes, and contain more differentially expressed proteins, highlighting a novel role for EVs during the early immune response to clozapine and enhancing our mechanistic understanding of IDIAG and other idiosyncratic reactions.
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Affiliation(s)
- Samantha Christine Sernoskie
- Departments of Pharmaceutical Sciences, Faculty of Pharmacy (S.C.S., J.U.) and Pharmacology and Toxicology, Temerty Faculty of Medicine (A.J., J.U.), University of Toronto, Toronto, Ontario; and Institute for Research in Immunology and Cancer (É.B., P.T.) and Department of Chemistry (P.T.), University of Montreal, Montreal, Quebec
| | - Éric Bonneil
- Departments of Pharmaceutical Sciences, Faculty of Pharmacy (S.C.S., J.U.) and Pharmacology and Toxicology, Temerty Faculty of Medicine (A.J., J.U.), University of Toronto, Toronto, Ontario; and Institute for Research in Immunology and Cancer (É.B., P.T.) and Department of Chemistry (P.T.), University of Montreal, Montreal, Quebec
| | - Pierre Thibault
- Departments of Pharmaceutical Sciences, Faculty of Pharmacy (S.C.S., J.U.) and Pharmacology and Toxicology, Temerty Faculty of Medicine (A.J., J.U.), University of Toronto, Toronto, Ontario; and Institute for Research in Immunology and Cancer (É.B., P.T.) and Department of Chemistry (P.T.), University of Montreal, Montreal, Quebec
| | - Alison Jee
- Departments of Pharmaceutical Sciences, Faculty of Pharmacy (S.C.S., J.U.) and Pharmacology and Toxicology, Temerty Faculty of Medicine (A.J., J.U.), University of Toronto, Toronto, Ontario; and Institute for Research in Immunology and Cancer (É.B., P.T.) and Department of Chemistry (P.T.), University of Montreal, Montreal, Quebec
| | - Jack Uetrecht
- Departments of Pharmaceutical Sciences, Faculty of Pharmacy (S.C.S., J.U.) and Pharmacology and Toxicology, Temerty Faculty of Medicine (A.J., J.U.), University of Toronto, Toronto, Ontario; and Institute for Research in Immunology and Cancer (É.B., P.T.) and Department of Chemistry (P.T.), University of Montreal, Montreal, Quebec
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Wu J, Wu X, Cheng C, Liu L, Xu L, Xu Z, Wang S, Symmes D, Mo L, Chen R, Zhang J. Therapeutic targeting of vimentin by ALD-R491 impacts multiple pathogenic processes to attenuate acute and chronic colitis in mice. Biomed Pharmacother 2023; 168:115648. [PMID: 37812892 DOI: 10.1016/j.biopha.2023.115648] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023] Open
Abstract
BACKGROUND Vimentin, an intermediate filament protein, crucially contributes to the pathogenesis of inflammatory bowel disease (IBD) by interacting with genetic risk factors, facilitating pathogen infection, and modulating both innate and adaptive immune responses. This study aimed to demonstrate preclinical proof-of-concept for targeting vimentin therapeutically in IBD across diverse etiologies. METHODS The small molecule compound ALD-R491 was assessed for vimentin binding using microscale thermophoresis, off-target effects via Eurofins screening, and therapeutic effects in mice with dextran sulfate sodium (DSS)-induced acute colitis and in IL-10 KO with spontaneous colitis. Parameters measured included body weight, survival, disease activity, colon length, and histology. The study analyzed intestinal proinflammatory cytokines, Th17/Treg cells, and epithelial barrier molecules, along with gut microbiota profiling. RESULTS ALD-R491 specifically bound vimentin with a dissociation constant (KD) of 328 ± 12.66 nM and no off-target effects. In the DSS model, orally administered ALD-R491 exhibited dose-dependent therapeutic effects, superior to 5-ASA and Tofacitinib. In the IL-10 KO model, ALD-R491 significantly delayed colitis onset and progression, with near-zero disease activity index scores over a 15-week treatment. ALD-R491 consistently showed in both models a reduced proinflammatory cytokine expression, including TNF-α, IL-1β, IL-6, IL-17, IL-22, a rebalanced Th17/Treg axis by reducing RORγt while enhancing FoxP3 expression, and an improved epithelial barrier integrity by increasing intestinal expressions of Mucin-2, ZO-1 and Claudin5. The intestinal dysbiosis was restored with enriched presence of probiotics. CONCLUSIONS Targeting vimentin exhibits significant therapeutic effects on various facets of IBD pathogenesis, representing a compelling approach for the development of highly effective treatments in IBD.
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Affiliation(s)
- Jianping Wu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China; Laboratory Animal Center, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xueting Wu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Cheng Cheng
- School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, China
| | - Lu Liu
- Laboratory Animal Center, Nanjing University of Chinese Medicine, Nanjing, China
| | - Le Xu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zijing Xu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shuaishuai Wang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Deebie Symmes
- Aluda Pharmaceuticals, Inc., Union City, CA 94587, USA
| | - Lian Mo
- Aluda Pharmaceuticals, Inc., Union City, CA 94587, USA
| | - Ruihuan Chen
- Aluda Pharmaceuticals, Inc., Union City, CA 94587, USA; Luoda Biosciences, Inc., Chuzhou, Anhui, China.
| | - Junfeng Zhang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China.
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Du C, Cai N, Dong J, Xu C, Wang Q, Zhang Z, Li J, Huang C, Ma T. Uncovering the role of cytoskeleton proteins in the formation of neutrophil extracellular traps. Int Immunopharmacol 2023; 123:110607. [PMID: 37506501 DOI: 10.1016/j.intimp.2023.110607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 07/30/2023]
Abstract
Neutrophils are a type of lymphocyte involved in innate immune defense. In response to specific stimuli, these phagocytic cells undergo a unique form of cell death, NETosis, during which they release neutrophil extracellular traps (NETs) composed of modified chromatin structures decorated with cytoplasmic and granular proteins. Multiple proteins and pathways have been implicated in the formation of NETs. The cytoskeleton, an interconnected network of filamentous polymers and regulatory proteins, plays a crucial role in resisting deformation, transporting intracellular cargo, and changing shape during movement of eukaryotic cells. It may also have evolved to defend eukaryotic organisms against infection. Recent research focuses on understanding the mechanisms underlying NETs formation and how cytoskeletal networks contribute to this process, by identifying enzymes that trigger NETosis or interact with NETs and influence cellular behavior through cytoskeletal dynamics. An enhanced understanding of the complex relationship between the cytoskeleton and NET formation will provide a framework for future research and the development of targeted therapeutic strategies, and supports the notion that the long-lived cytoskeleton structures may have a lasting impact on this area of research.
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Affiliation(s)
- Changlin Du
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Na Cai
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Jiahui Dong
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Chuanting Xu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Qi Wang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Zhenming Zhang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Jun Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Cheng Huang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China.
| | - Taotao Ma
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China.
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Arrindell J, Desnues B. Vimentin: from a cytoskeletal protein to a critical modulator of immune response and a target for infection. Front Immunol 2023; 14:1224352. [PMID: 37475865 PMCID: PMC10354447 DOI: 10.3389/fimmu.2023.1224352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/20/2023] [Indexed: 07/22/2023] Open
Abstract
Vimentin is an intermediate filament protein that plays a role in cell processes, including cell migration, cell shape and plasticity, or organelle anchorage. However, studies from over the last quarter-century revealed that vimentin can be expressed at the cell surface and even secreted and that its implications in cell physiology largely exceed structural and cytoskeletal functions. Consequently, vimentin contributes to several pathophysiological conditions such as cancer, autoimmune and inflammatory diseases, or infection. In this review, we aimed at covering these various roles and highlighting vimentin implications in the immune response. We also provide an overview of how some microbes including bacteria and viruses have acquired the ability to circumvent vimentin functions in order to interfere with host responses and promote their uptake, persistence, and egress from host cells. Lastly, we discuss the therapeutic approaches associated with vimentin targeting, leading to several beneficial effects such as preventing infection, limiting inflammatory responses, or the progression of cancerous events.
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Affiliation(s)
- Jeffrey Arrindell
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
| | - Benoit Desnues
- Aix Marseille Univ, Institut de Recherche pour le Développement (IRD), Assistance Publique-Hôpitaux de Marseille (AP-HM), Microbes Evolution Phylogeny and Infections (MEPHI), Marseille, France
- Institut Hospitalo-Universitaire (IHU)-Méditerranée Infection, Marseille, France
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