1
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Nelson RB, Rose KN, Menniti FS, Zorn SH. Hiding in plain sight: Do recruited dendritic cells surround amyloid plaques in Alzheimer's disease? Biochem Pharmacol 2024; 228:116258. [PMID: 38705533 DOI: 10.1016/j.bcp.2024.116258] [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: 02/23/2024] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
Over the past decade, human genome-wide association and expression studies have strongly implicated dysregulation of the innate immune system in the pathogenesis of Alzheimer's disease (AD). Single cell mRNA sequencing studies have identified innate immune cell subtypes that are minimally present in normal healthy brain, but whose numbers greatly increase in association with AD pathology. These AD pathology-associated immune cells are putatively the locus for the immune-related AD risk. While the prevailing view is that these immune cells arise from transformation of resident brain microglia, studies across several decades and using multiple techniques and strategies suggest instead that the pathology-associated immune cells are bone-marrow derived hematopoietic cells that are recruited into brain. We critically review this translational literature, emphasizing the strengths and limitations of techniques used to address recruitment and the experimental designs employed. We conclude that the aggregate evidence points toward recruitment into brain of innate immune cells of the myeloid dendritic cell lineage. Recruitment of dendritic cells and their role in AD pathogenesis has broad implications for our understanding of the etiology and pathobiology of AD that impact the strategies to develop new, immune system-targeted therapeutics for this devastating disease.
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Affiliation(s)
- Robert B Nelson
- MindImmune Therapeutics, Inc., Kingston, RI; George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI; Dept of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI.
| | - Kenneth N Rose
- MindImmune Therapeutics, Inc., Kingston, RI; Dept of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI
| | - Frank S Menniti
- MindImmune Therapeutics, Inc., Kingston, RI; George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI; Dept of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI
| | - Stevin H Zorn
- MindImmune Therapeutics, Inc., Kingston, RI; George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI; Dept of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI
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2
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Basu S, Hassman L, Kodati S, Chu CJ. Intraocular Immune Response in Human Uveitis: Time to Look Beyond Animal Models. Am J Ophthalmol 2024; 266:17-25. [PMID: 38703799 PMCID: PMC7616079 DOI: 10.1016/j.ajo.2024.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 04/05/2024] [Accepted: 04/27/2024] [Indexed: 05/06/2024]
Abstract
PURPOSE To review the current and future approaches to investigating the intraocular immune response in human uveitis. DESIGN Perspective. METHODS Review of currently available methods for investigating the immune response in ocular tissues and fluids in patients with intraocular inflammation/ uveitis. The advantages and disadvantages of human studies have been compared to those of animal models of uveitis. RESULTS Animal models, while being excellent tools for mechanistic studies, do not replicate the clinical and immunologic heterogeneity of human uveitis. Opportunities for immunological studies in human uveitis are mostly limited to histological studies, or sampling of intraocular fluids and peripheral blood. Histopathological studies can be enhanced by revisiting published historical data, tissue repositories, or autopsy specimens. Intraocular fluids can be investigated by a variety of techniques. Among these, flow cytometry and single-cell RNA sequencing (scRNAseq) provide single-cell resolution. While the current technology is costly and labor-intensive, scRNAseq is less limited by the low cellular yield from intraocular fluids and allows unbiased immune profiling enabling discovery of new cellular subsets. Immunological phenotypes uncovered from human data can be further investigated in animal studies. CONCLUSION The diversity of the intraocular immune response in uveitis patients remains challenging but can be studied by multiple techniques including histopathology, flow cytometry, and scRNAseq. Human data can be combined with animal studies for translating uveitis research into novel therapies.
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Affiliation(s)
- Soumyava Basu
- From the Saroja A Rao Centre for Uveitis (S.B.), LV Prasad Eye Institute, Hyderabad, India.
| | - Lynn Hassman
- UCHealth Sue Anschutz-Rodgers Eye Center (L.H.), Anschutz Medical Campus, Aurora, Colorado, USA
| | - Shilpa Kodati
- Kellogg Eye Center (S.K.), University of Michigan, Ann Arbor, Michigan, USA
| | - Colin J Chu
- NIHR Biomedical Research Centre (C.J.C.), Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom
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3
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Achten R, van Luijk C, Thijs J, Drylewicz J, Delemarre E, Nierkens S, Bakker D, van Wijk F, de Graaf M, de Bruin-Weller M, de Boer J, Kuiper J. Non-Infectious Uveitis Secondary to Dupilumab Treatment in Atopic Dermatitis Patients Shows a Pro-Inflammatory Molecular Profile. Ocul Immunol Inflamm 2024; 32:1150-1154. [PMID: 36854134 DOI: 10.1080/09273948.2023.2182325] [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: 11/10/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 03/02/2023]
Abstract
Severe uveitis is a rare complication of interleukin-4 receptor alpha blocking by dupilumab in topic dermatitis (AD) patients. The aim of this study was to describe five moderate-to-severe AD patients who developed uveitis during dupilumab treatment and to compare the proteomic profile of aqueous humor (AqH) of dupilumab-associated uveitis (n=3/5 available samples) with non-infectious uveitis (n=27) and cataract controls (n=11). Included patients were treated at the University Medical Center Utrecht (the Netherlands). Active dupilumab-associated uveitis complicated by serous detachment, cystoid macular edema, or secondary glaucoma developed within a median of 6.0 months (interquartile range 2.3-16.5 months) after starting dupilumab. Uveitis resolved after discontinuation of dupilumab and/or treatment with local or systemic corticosteroids. Proteomic profiling of AqH revealed that the molecular profile of dupilumab-associated uveitis resembled that of non-infectious uveitis. In conclusion, dupilumab-associated uveitis is a severe adverse event of dupilumab therapy, requiring urgent referral to an ophthalmologist.
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Affiliation(s)
- Roselie Achten
- Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Chantal van Luijk
- Department of Ophthalmology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Judith Thijs
- Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Julia Drylewicz
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Eveline Delemarre
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Stefan Nierkens
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Daphne Bakker
- Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Femke van Wijk
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Marlies de Graaf
- Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Marjolein de Bruin-Weller
- Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Joke de Boer
- Department of Ophthalmology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Jonas Kuiper
- Department of Ophthalmology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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Ermann J, Lefton M, Wei K, Gutierrez-Arcelus M. Understanding Spondyloarthritis Pathogenesis: The Promise of Single-Cell Profiling. Curr Rheumatol Rep 2024; 26:144-154. [PMID: 38227172 DOI: 10.1007/s11926-023-01132-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2023] [Indexed: 01/17/2024]
Abstract
PURPOSE OF REVIEW Single-cell profiling, either in suspension or within the tissue context, is a rapidly evolving field. The purpose of this review is to outline recent advancements and emerging trends with a specific focus on studies in spondyloarthritis. RECENT FINDINGS The introduction of sequencing-based approaches for the quantification of RNA, protein, or epigenetic modifications at single-cell resolution has provided a major boost to discovery-driven research. Fluorescent flow cytometry, mass cytometry, and image-based cytometry continue to evolve. Spatial transcriptomics and imaging mass cytometry have extended high-dimensional analysis to cells in tissues. Applications in spondyloarthritis include the indexing and functional characterization of cells, discovery of disease-associated cell states, and identification of signatures associated with therapeutic responses. Single-cell TCR-seq has provided evidence for clonal expansion of CD8+ T cells in spondyloarthritis. The use of single-cell profiling approaches in spondyloarthritis research is still in its early stages. Challenges include high cost and limited availability of diseased tissue samples. To harness the full potential of the rapidly expanding technical capabilities, large-scale collaborative efforts are imperative.
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Affiliation(s)
- Joerg Ermann
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
| | - Micah Lefton
- Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, USA
| | - Kevin Wei
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Maria Gutierrez-Arcelus
- Harvard Medical School, Boston, MA, USA
- Boston Children's Hospital, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
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5
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Chen S, Huang W, Wan Q, Tang Z, Li X, Zeng F, Zheng S, Li Z, Liu X. Investigation of the acute pathogenesis of spondyloarthritis/HLA-B27-associated anterior uveitis based on genome-wide association analysis and single-cell transcriptomics. J Transl Med 2024; 22:271. [PMID: 38475831 PMCID: PMC10936029 DOI: 10.1186/s12967-024-05077-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/07/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Patients with spondyloarthritis (SpA)/HLA-B27-associated acute anterior uveitis (AAU) experience recurring acute flares, which pose significant visual and financial challenges. Despite established links between SpA and HLA-B27-associated AAU, the exact mechanism involved remains unclear, and further understanding is needed for effective prevention and treatment. METHODS To investigate the acute pathogenesis of SpA/HLA-B27-associated AAU, Mendelian randomization (MR) and single-cell transcriptomic analyses were employed. The MR incorporated publicly available protein quantitative trait locus data from previous studies, along with genome-wide association study data from public databases. Causal relationships between plasma proteins and anterior uveitis were assessed using two-sample MR. Additionally, colocalization analysis was performed using Bayesian colocalization. Single-cell transcriptome analysis utilized the anterior uveitis dataset from the Gene Expression Omnibus (GEO) database. Dimensionality reduction, clustering, transcription factor analysis, pseudotime analysis, and cell communication analysis were subsequently conducted to explore the underlying mechanisms involved. RESULTS Mendelian randomization analysis revealed that circulating levels of AIF1 and VARS were significantly associated with a reduced risk of developing SpA/HLA-B27-associated AAU, with AIF1 showing a robust correlation with anterior uveitis onset. Colocalization analysis supported these findings. Single-cell transcriptome analysis showed predominant AIF1 expression in myeloid cells, which was notably lower in the HLA-B27-positive group. Pseudotime analysis revealed dendritic cell terminal positions in differentiation branches, accompanied by gradual decreases in AIF1 expression. Based on cell communication analysis, CD141+CLEC9A+ classic dendritic cells (cDCs) and the APP pathway play crucial roles in cellular communication in the Spa/HLA-B27 group. CONCLUSIONS AIF1 is essential for the pathogenesis of SpA/HLA-B27-associated AAU. Myeloid cell differentiation into DCs and decreased AIF1 levels are also pivotal in this process.
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Affiliation(s)
- Shuming Chen
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Weidi Huang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Qiaoqian Wan
- Department of Anaesthesiology, the Second Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Zichun Tang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Xie Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Fang Zeng
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Shuyan Zheng
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China
| | - Zhuo Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China.
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China.
- Hunan Provincial Key Laboratory of Critical Quality Attribute of Cell Therapy Products, Changsha, 410011, Hunan, China.
| | - Xiao Liu
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011, China.
- Hunan Clinical Research Center of Ophthalmic Disease, Changsha, 410011, Hunan, China.
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6
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Rosenbaum JT, Pasadhika S. Ocular Sarcoidosis. Clin Chest Med 2024; 45:59-70. [PMID: 38245371 DOI: 10.1016/j.ccm.2023.08.003] [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] [Indexed: 01/22/2024]
Abstract
Sarcoidosis frequently affects the eye and can do so in many different ways. Sarcoidosis causing uveitis can have distinctive features that facilitate identifying sarcoidosis as the cause of the uveitis. Progress is being made in elucidating ocular sarcoidosis, as for example, by transcriptomics, genetics, therapy, and imaging.
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Affiliation(s)
- James T Rosenbaum
- Legacy Devers Eye Institute, 1040 NW 22nd Avenue, Portland, OR 97210, USA; Corvus Pharmaceuticals, 863 Mitten Road Street 102, Burlingame, CA 94010, USA.
| | - Sirichai Pasadhika
- Legacy Devers Eye Institute, 1040 NW 22nd Avenue, Portland, OR 97210, USA
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Ahsanuddin S, Wu AY. Single-cell transcriptomics of the ocular anterior segment: a comprehensive review. Eye (Lond) 2023; 37:3334-3350. [PMID: 37138096 PMCID: PMC10156079 DOI: 10.1038/s41433-023-02539-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/07/2023] [Accepted: 04/11/2023] [Indexed: 05/05/2023] Open
Abstract
Elucidating the cellular and genetic composition of ocular tissues is essential for uncovering the pathophysiology of ocular diseases. Since the introduction of single-cell RNA sequencing (scRNA-seq) in 2009, vision researchers have performed extensive single-cell analyses to better understand transcriptome complexity and heterogeneity of ocular structures. This technology has revolutionized our ability to identify rare cell populations and to make cross-species comparisons of gene expression in both steady state and disease conditions. Importantly, single-cell transcriptomic analyses have enabled the identification of cell-type specific gene markers and signalling pathways between ocular cell populations. While most scRNA-seq studies have been conducted on retinal tissues, large-scale transcriptomic atlases pertaining to the ocular anterior segment have also been constructed in the past three years. This timely review provides vision researchers with an overview of scRNA-seq experimental design, technical limitations, and clinical applications in a variety of anterior segment-related ocular pathologies. We review open-access anterior segment-related scRNA-seq datasets and illustrate how scRNA-seq can be an indispensable tool for the development of targeted therapeutics.
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Affiliation(s)
- Sofia Ahsanuddin
- Department of Ophthalmology, Byers Eye Institute, Stanford University School of Medicine, Stanford, CA, USA
- Department of Ophthalmology, New York Eye and Ear Infirmary of Mount Sinai, New York City, NY, USA
- Department of Ophthalmology, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Albert Y Wu
- Department of Ophthalmology, Byers Eye Institute, Stanford University School of Medicine, Stanford, CA, USA.
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8
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Kang H, Sun H, Yang Y, Tuong ZK, Shu M, Wei Y, Zhang Y, Yu D, Tao Y. Autoimmune uveitis in Behçet's disease and Vogt-Koyanagi-Harada disease differ in tissue immune infiltration and T cell clonality. Clin Transl Immunology 2023; 12:e1461. [PMID: 37720629 PMCID: PMC10503407 DOI: 10.1002/cti2.1461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 06/16/2023] [Accepted: 08/04/2023] [Indexed: 09/19/2023] Open
Abstract
Objectives Non-infectious uveitis is often secondary to systemic autoimmune diseases, with Behçet's disease (BD) and Vogt-Koyanagi-Harada disease (VKHD) as the two most common causes. Uveitis in BD and VKHD can show similar clinical manifestations, but the underlying immunopathogenesis remains unclear. Methods To understand immune landscapes in inflammatory eye tissues, we performed single-cell RNA paired with T cell receptor (TCR) sequencing of immune cell infiltrates in aqueous humour from six patients with BD (N = 3) and VKHD (N = 3) uveitis patients. Results Although T cells strongly infiltrated in both types of autoimmune uveitis, myeloid cells only significantly presented in BD uveitis but not in VKHD uveitis. Conversely, VKHD uveitis but not BD uveitis showed an overwhelming dominance by CD4+ T cells (> 80%) within the T cell population due to expansion of CD4+ T cell clusters with effector memory (Tem) phenotypes. Correspondingly, VKHD uveitis demonstrated a selective expansion of CD4+ T cell clones which were enriched in pro-inflammatory Granzyme H+ CD4+ Tem cluster and showed TCR and Th1 pathway activation. In contrast, BD uveitis showed a preferential expansion of CD8+ T cell clones in pro-inflammatory Granzyme H+ CD8+ Tem cluster, and pathway activation for cytoskeleton remodelling, cellular adhesion and cytotoxicity. Conclusion Single-cell analyses of ocular tissues reveal distinct landscapes of immune cell infiltration and T-cell clonal expansions between VKHD and BD uveitis. Preferential involvements of pro-inflammatory CD4+ Th1 cells in VKHD and cytotoxic CD8+ T cells in BD suggest a difference in disease immunopathogenesis and can guide precision disease management.
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Affiliation(s)
- Hao Kang
- Department of Ophthalmology, Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina
| | - Hongjian Sun
- Frazer Institute, Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- Shandong Artificial Intelligence InstituteQilu University of Technology (Shandong Academy of Sciences)JinanChina
| | - Yang Yang
- Frazer Institute, Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- Shandong Artificial Intelligence InstituteQilu University of Technology (Shandong Academy of Sciences)JinanChina
| | - Zewen K Tuong
- Ian Frazer Centre for Children's Immunotherapy Research, Children's Health Research Centre, Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Minglei Shu
- Shandong Artificial Intelligence InstituteQilu University of Technology (Shandong Academy of Sciences)JinanChina
| | - Yunbo Wei
- School of Pharmaceutical Sciences, Laboratory of Immunology for Environment and Health, Shandong Analysis and Test CenterQilu University of Technology (Shandong Academy of Sciences)JinanChina
| | - Yu Zhang
- School of Pharmaceutical Sciences, Laboratory of Immunology for Environment and Health, Shandong Analysis and Test CenterQilu University of Technology (Shandong Academy of Sciences)JinanChina
| | - Di Yu
- Frazer Institute, Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
- Ian Frazer Centre for Children's Immunotherapy Research, Children's Health Research Centre, Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Yong Tao
- Department of Ophthalmology, Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina
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Ziade N. Human leucocyte antigen-B27 testing in clinical practice: a global perspective. Curr Opin Rheumatol 2023; 35:235-242. [PMID: 37115941 DOI: 10.1097/bor.0000000000000946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
PURPOSE OF REVIEW The association between human leucocyte antigen (HLA)-B27 and spondyloarthritis (SpA) was described half a century ago. New insights about pathophysiologic pathways and their role in bone formation were reported in recent years and will be discussed in this review. RECENT FINDINGS There is a considerable variation in the association between HLA-B27 and SpA across the globe, with the strongest association reported in populations of Northern European and Asian descent and the lowest in the Middle East and Africa. Other genes are also involved in disease susceptibility, highlighting the importance of newly proposed weighted genetic scores to support the diagnosis. On the global level, the interaction between genetic background and gut dysbiosis seems critical for disease predisposition. As for the individual patient, the presence of HLA-B27 can have a significant influence on SpA diagnosis and disease phenotype. More importantly, new studies suggested a role for HLA-B27 in radiographic damage in the sacroiliac joints and the progression of bone formation in the spine. SUMMARY Findings in recent years have enhanced our understanding of the role of HLA-B27 in the pathophysiology and in disease-related bone formation in SpA, which may pave the way for new therapeutic targets.
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Affiliation(s)
- Nelly Ziade
- Saint-Joseph University
- Hotel-Dieu de France Hospital, Beirut, Lebanon
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10
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O'Leary D, Al Julandani DA, Zia M, Klotsche J, Minden K, Roderick M, Ramanan AV, Killeen OG, Wilson AG. HLA-B*27 is associated with CNO in a European cohort. Pediatr Rheumatol Online J 2023; 21:52. [PMID: 37277844 DOI: 10.1186/s12969-023-00826-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 05/06/2023] [Indexed: 06/07/2023] Open
Abstract
OBJECTIVES To determine the influence of HLA-B27 positivity on risk of developing chronic nonbacterial osteomyelitis (CNO). METHODS HLA-B*27 genotype was assessed in 3 European CNO populations and compared with local control populations (572 cases, 33,256 controls). Regional or whole-body MRI was performed at diagnosis and follow-up in all cases which reduces the risk of disease misclassification. Genotyping was performed using either next generation DNA sequencing or PCR based molecular typing. Statistical analysis used Fisher's exact test with Bonferroni correction and a fixed effects model for meta-analysis of odds ratios. RESULTS HLA-B*27 frequency was higher in all 3 populations compared with local controls (combined odds ratio (OR) = 2.2, p-value = 3 × 10-11). This association was much stronger in male compared with female cases (OR = 1.99, corrected p-value = 0.015). However, the HLA-B*27 status was not statistically significantly associated with co-occurrence of psoriasis, arthritis or inflammatory bowel disease. CONCLUSION Carriage of HLA-B*27 is associated with greater risk of developing CNO, particularly in male cases.
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Affiliation(s)
- Daire O'Leary
- Centre for Arthritis Research, Conway Institute, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.
- National Centre for Paediatric Rheumatology, Children's Health Ireland, Dublin, Ireland.
| | | | - Muhammad Zia
- National Centre for Paediatric Rheumatology, Children's Health Ireland, Dublin, Ireland
| | - Jens Klotsche
- Deutsches Rheuma-Forschungszentrum Berlin, Leibniz Institute, Berlin, Germany
| | - Kirsten Minden
- Deutsches Rheuma-Forschungszentrum Berlin, Leibniz Institute, Berlin, Germany
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Marion Roderick
- Department of Paediatric Immunology and Infectious Diseases, Bristol Royal Hospital for Children, Bristol, UK
- Population Health Sciences, University of Bristol, Bristol, UK
| | - Athimalaipet V Ramanan
- Department of Paediatric Rheumatology, Bristol Royal Hospital for Children, Bristol, UK
- Translational Health Sciences, University of Bristol, Bristol, UK
| | - Orla G Killeen
- Centre for Arthritis Research, Conway Institute, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- National Centre for Paediatric Rheumatology, Children's Health Ireland, Dublin, Ireland
| | - Anthony G Wilson
- Centre for Arthritis Research, Conway Institute, School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
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11
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Shu N, Zhang Z, Wang X, Li R, Li W, Liu X, Zhang Q, Jiang Z, Tao L, Zhang L, Hou S. Apigenin Alleviates Autoimmune Uveitis by Inhibiting Microglia M1 Pro-Inflammatory Polarization. Invest Ophthalmol Vis Sci 2023; 64:21. [PMID: 37219511 PMCID: PMC10210511 DOI: 10.1167/iovs.64.5.21] [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: 08/28/2022] [Accepted: 04/28/2023] [Indexed: 05/24/2023] Open
Abstract
Purpose Apigenin is a natural small molecule compound widely present in various vegetables and fruits. Recently, Apigenin was reported to inhibit lipopolysaccharide (LPS)-simulated microglial proinflammatory activation. Considering the important role of microglia in retinal disorders, we wonder whether Apigenin could exert a therapeutic effect on experimental autoimmune uveitis (EAU) through reprogramming retinal microglia to a beneficial subtype. Methods EAU was induced in C57BL/6J mice by immunization with interphotoreceptor retinoid-binding protein (IRBP)651-670, followed by intraperitoneal administration of Apigenin. Disease severity was assessed based on clinical and pathological scores. In vivo, Western blotting was used to quantify protein levels of classical inflammatory factors, microglial M1/M2 markers and the tight junction protein of the blood-retinal-barrier (BRB). Immunofluorescence was used to determine the Apigenin's efficacy on microglial phenotype. In vitro, Apigenin was added in LPS and IFN-γ stimulated human microglial cell line. Western blotting and Transwell assays were used to analyze the phenotype of microglia. Results In vivo, we found that Apigenin significantly reduced the clinical and pathological scores of EAU. The protein levels of inflammatory cytokines were significantly decreased in retina, and BRB disruption was ameliorated after Apigenin treatment. Meanwhile, Apigenin inhibited microglia M1 transition in EAU mice retina. In vitro functional studies showed that Apigenin decreased LPS and IFN-γ-induced microglial inflammatory factor production and M1-activation via the TLR4/MyD88 pathway. Conclusions Apigenin can ameliorate retinal inflammation in IRBP induced autoimmune uveitis through inhibiting microglia M1 pro-inflammatory polarization via TLR4/MyD88 pathway.
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Affiliation(s)
- Nan Shu
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Zhi Zhang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Xiaotang Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Ruonan Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Wanqian Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Xianyang Liu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Qi Zhang
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhengxuan Jiang
- The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Liming Tao
- The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li Zhang
- The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shengping Hou
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China
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12
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Emerging phagocytosis checkpoints in cancer immunotherapy. Signal Transduct Target Ther 2023; 8:104. [PMID: 36882399 PMCID: PMC9990587 DOI: 10.1038/s41392-023-01365-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 03/09/2023] Open
Abstract
Cancer immunotherapy, mainly including immune checkpoints-targeted therapy and the adoptive transfer of engineered immune cells, has revolutionized the oncology landscape as it utilizes patients' own immune systems in combating the cancer cells. Cancer cells escape immune surveillance by hijacking the corresponding inhibitory pathways via overexpressing checkpoint genes. Phagocytosis checkpoints, such as CD47, CD24, MHC-I, PD-L1, STC-1 and GD2, have emerged as essential checkpoints for cancer immunotherapy by functioning as "don't eat me" signals or interacting with "eat me" signals to suppress immune responses. Phagocytosis checkpoints link innate immunity and adaptive immunity in cancer immunotherapy. Genetic ablation of these phagocytosis checkpoints, as well as blockade of their signaling pathways, robustly augments phagocytosis and reduces tumor size. Among all phagocytosis checkpoints, CD47 is the most thoroughly studied and has emerged as a rising star among targets for cancer treatment. CD47-targeting antibodies and inhibitors have been investigated in various preclinical and clinical trials. However, anemia and thrombocytopenia appear to be formidable challenges since CD47 is ubiquitously expressed on erythrocytes. Here, we review the reported phagocytosis checkpoints by discussing their mechanisms and functions in cancer immunotherapy, highlight clinical progress in targeting these checkpoints and discuss challenges and potential solutions to smooth the way for combination immunotherapeutic strategies that involve both innate and adaptive immune responses.
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13
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Shi W, Ye J, Shi Z, Pan C, Zhang Q, Lin Y, Luo Y, Su W, Zheng Y, Liu Y. Chromatin accessibility analysis reveals regulatory dynamics and therapeutic relevance of Vogt-Koyanagi-Harada disease. Commun Biol 2022; 5:506. [PMID: 35618758 PMCID: PMC9135711 DOI: 10.1038/s42003-022-03430-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/29/2022] [Indexed: 12/19/2022] Open
Abstract
The barrier to curing Vogt-Koyanagi-Harada disease (VKH) is thought to reside in a lack of understanding in the roles and regulations of peripheral inflammatory immune cells. Here we perform a single-cell multi-omic study of 166,149 cells in peripheral blood mononuclear cells from patients with VKH, profile the chromatin accessibility and gene expression in the same blood samples, and uncover prominent cellular heterogeneity. Immune cells in VKH blood are highly activated and pro-inflammatory. Notably, we describe an enrichment of transcription targets for nuclear factor kappa B in conventional dendritic cells (cDCs) that governed inflammation. Integrative analysis of transcriptomic and chromatin maps shows that the RELA in cDCs is related to disease complications and poor prognosis. Ligand-receptor interaction pairs also identify cDC as an important predictor that regulated multiple immune subsets. Our results reveal epigenetic and transcriptional dynamics in auto-inflammation, especially the cDC subtype that might lead to therapeutic strategies in VKH.
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Affiliation(s)
- Wen Shi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.,Research Unit of Ocular Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, 100085, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
| | - Jinguo Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Zhuoxing Shi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Caineng Pan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Qikai Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Yuheng Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Yuanting Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Wenru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Yingfeng Zheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China. .,Research Unit of Ocular Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, 100085, China. .,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China.
| | - Yizhi Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.,Research Unit of Ocular Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, 100085, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510005, China
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14
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Liu J, Yin G, Hu K, Huang H, Xu F, Yang Y, Chen F. Parental uveitis causes elevated hair loss in offspring of C57BL/6J mice. Exp Eye Res 2022; 219:109056. [PMID: 35367248 DOI: 10.1016/j.exer.2022.109056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 01/10/2023]
Abstract
Our previous study demonstrated that parental uveitis in a susceptible population can cause hair loss and increase the susceptibility to experimental autoimmune uveitis (EAU) in offspring. However, it is unclear whether parental uveitis affects the development of offspring in an EAU-moderate-susceptible population. Herein, moderate-susceptible C57BL/6J mice were immunized with inter-photoreceptor retinoid binding protein (IRBP) 651-670 to develop EAU and were kept together for mating. Gross examination and histopathological changes of the offspring gestated with parental uveitis were observed to evaluate the impact of parental uveitis on the development of the offspring. Differentially expressed genes (DEGs) were screened by RNA sequencing in the affected skin and eyeball of the offspring on postnatal day 27. Adult offspring were injected 75 μg IRBP651-670 to evaluate their susceptibility to EAU. Gross examination in the offspring revealed hair loss on postnatal days 11-31. Histopathological observation showed increased melanin granules and hair follicles of skin in the affected offspring with hair loss. Gene Ontology (GO) analysis in the skin revealed differential expression of genes involved in the mitotic cell cycle, response to endogenous stimulus, hair follicle development, and hair cycle. The DEGs in the skin were predominately associated with the cell cycle and peroxisome proliferator-activated receptor (PPAR) signaling pathway. The GO enrichment analysis in the eyeball showed differential expression of genes involved in the nervous system development, camera-type eye photoreceptor cell differentiation, neuron projection morphogenesis, axon development, and calcium-induced calcium release activity; enriched pathways included the circadian entrainment and glutamatergic synapses. No increased susceptibility to EAU in offspring gestated from parental remitting EAU was observed at a low-dose 75 μg IRBP induction. These results suggested that parental uveitis in a moderate-susceptible population could affect the skin development and DEG profiles of skin and eyeball related to the response to endogenous stimulus, the PPAR signaling pathway, and glutamatergic synapse, which provides the molecular evidence to explain the influence of parental uveitis on offspring development.
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Affiliation(s)
- Jianping Liu
- Department of Pathology, Chongqing Medical University, Chongqing, PR China
| | - Guangnian Yin
- Laboratory Animal Center, Chongqing Medical University, Chongqing, PR China; The Second Affiliated Hospital of Army Military Medical University, Chongqing, PR China
| | - Kaijiao Hu
- Laboratory Animal Center, Chongqing Medical University, Chongqing, PR China; Chongqing Engineering Research Center for Rodent Laboratory Animals, Chongqing, PR China
| | - Hui Huang
- Laboratory Animal Center, Chongqing Medical University, Chongqing, PR China; Chongqing Engineering Research Center for Rodent Laboratory Animals, Chongqing, PR China
| | - Fei Xu
- Laboratory Animal Center, Chongqing Medical University, Chongqing, PR China; Chongqing Engineering Research Center for Rodent Laboratory Animals, Chongqing, PR China
| | - Yaying Yang
- Department of Pathology, Chongqing Medical University, Chongqing, PR China.
| | - Feilan Chen
- Laboratory Animal Center, Chongqing Medical University, Chongqing, PR China; Chongqing Engineering Research Center for Rodent Laboratory Animals, Chongqing, PR China.
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15
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Icariin alleviates uveitis by targeting peroxiredoxin 3 to modulate retinal microglia M1/M2 phenotypic polarization. Redox Biol 2022; 52:102297. [PMID: 35334248 PMCID: PMC8956882 DOI: 10.1016/j.redox.2022.102297] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/10/2022] [Accepted: 03/16/2022] [Indexed: 11/22/2022] Open
Abstract
Uveitis causes blindness and critical visual impairment in people of all ages, and retinal microglia participate in uveitis progression. Unfortunately, effective treatment is deficient. Icariin (ICA) is a bioactive monomer derived from Epimedium. However, the role of ICA in uveitis remains elusive. Our study indicated that ICA alleviated intraocular inflammation in vivo. Further results showed the proinflammatory M1 microglia could be transferred to anti-inflammatory M2 microglia by ICA in the retina and HMC3 cells. However, the direct pharmacological target of ICA is unknown, to this end, proteome microarrays and molecular simulations were used to identify the molecular targets of ICA. Data showed that ICA binds to peroxiredoxin-3 (PRDX3), increasing PRDX3 protein expression in both a time- and a concentration-dependent manner and promoting the subsequent elimination of H2O2. In addition, GPX4/SLC7A11/ACSL4 pathways were activated accompanied by PRDX3 activation. Functional tests demonstrated that ICA-derived protection is afforded through targeting PRDX3. First, ICA-shifted microglial M1/M2 phenotypic polarization was no longer detected by blocking PRDX3 both in vivo and in vitro. Next, ICA-activated GPX4/SLC7A11/ACSL4 pathways and downregulated H2O2 production were also reversed via inhibiting PRDX3 both in vivo and in vitro. Finally, ICA-elicited positive effects on intraocular inflammation were eliminated in PRDX3-deficient retina from experimental autoimmune uveitis (EAU) mice. Taking together, ICA-derived PRDX3 activation has therapeutic potential for uveitis, which might be associated with modulating microglial M1/M2 phenotypic polarization.
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