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Goto H, Arima T, Takahashi A, Tobita Y, Nakano Y, Toda E, Shimizu A, Okamoto F. Trimebutine prevents corneal inflammation in a rat alkali burn model. Sci Rep 2024; 14:12111. [PMID: 38802470 PMCID: PMC11130283 DOI: 10.1038/s41598-024-61112-4] [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: 02/14/2024] [Accepted: 05/02/2024] [Indexed: 05/29/2024] Open
Abstract
Alkaline burns to the cornea lead to loss of corneal transparency, which is essential for normal vision. We used a rat corneal alkaline burn model to investigate the effect of ophthalmic trimebutine solution on healing wounds caused by alkaline burns. Trimebutine, an inhibitor of the high-mobility group box 1-receptor for advanced glycation end products, when topically applied to the burned cornea, suppressed macrophage infiltration in the early phase and neutrophil infiltration in the late phase at the wound site. It also inhibited neovascularization and myofibroblast development in the late phase. Furthermore, trimebutine effectively inhibited interleukin-1β expression in the injured cornea. It reduced scar formation by decreasing the expression of type III collagen. These findings suggest that trimebutine may represent a novel therapeutic strategy for corneal wounds, not only through its anti-inflammatory effects but also by preventing neovascularization.
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Affiliation(s)
- Hitoshi Goto
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Takeshi Arima
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Akira Takahashi
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Yutaro Tobita
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Yuji Nakano
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Etsuko Toda
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan
| | - Akira Shimizu
- Department of Analytic Human Pathology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan.
| | - Fumiki Okamoto
- Department of Ophthalmology, Nippon Medical School, Bunkyo-Ku, Tokyo, 113-8603, Japan.
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2
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Lu Z, Fan B, Li Y, Zhang Y. RAGE plays key role in diabetic retinopathy: a review. Biomed Eng Online 2023; 22:128. [PMID: 38115006 PMCID: PMC10729525 DOI: 10.1186/s12938-023-01194-9] [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: 09/22/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023] Open
Abstract
RAGE is a multiligand receptor for the immunoglobulin superfamily of cell surface molecules and is expressed in Müller cells, vascular endothelial cells, nerve cells and RPE cells of the retina. Diabetic retinopathy (DR) is a multifactorial disease associated with retinal inflammation and vascular abnormalities and is the leading cause of vision loss or impairment in older or working-age adults worldwide. Therapies aimed at reducing the inflammatory response and unnecessary angiogenesis can help slow the progression of DR, which in turn can save patients' vision. To maximize the efficacy and minimize the side effects, treatments that target key players in the pathophysiological process of DR need to be developed. The interaction between RAGE and its ligands is involved in a variety of cytopathological alterations in the retina, including secretion of inflammatory factors, regulation of angiogenesis, oxidative stress, structural and functional changes, and neurodegeneration. In this review, we will summarize the pathologic pathways mediated by RAGE and its ligand interactions and discuss its role in the progression of diabetic retinopathy to explore potential therapeutic targets that are effective and safe for DR.
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Affiliation(s)
- ZhiWen Lu
- Department of Ophthalmology, The Second Hospital of Jilin University, Nanguan District, No. 4026, Yatai Street, Changchun, 130000, Jilin Province, China
| | - Bin Fan
- Department of Ophthalmology, The Second Hospital of Jilin University, Nanguan District, No. 4026, Yatai Street, Changchun, 130000, Jilin Province, China.
| | - YunZhi Li
- Department of Ophthalmology, The Second Hospital of Jilin University, Nanguan District, No. 4026, Yatai Street, Changchun, 130000, Jilin Province, China
| | - YiXin Zhang
- Department of Ophthalmology, The Second Hospital of Jilin University, Nanguan District, No. 4026, Yatai Street, Changchun, 130000, Jilin Province, China
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3
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Cecchinato V, Martini V, Pirani E, Ghovehoud E, Uguccioni M. The chemokine landscape: one system multiple shades. Front Immunol 2023; 14:1176619. [PMID: 37251376 PMCID: PMC10213763 DOI: 10.3389/fimmu.2023.1176619] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/19/2023] [Indexed: 05/31/2023] Open
Abstract
Leukocyte trafficking is mainly governed by chemokines, chemotactic cytokines, which can be concomitantly produced in tissues during homeostatic conditions or inflammation. After the discovery and characterization of the individual chemokines, we and others have shown that they present additional properties. The first discoveries demonstrated that some chemokines act as natural antagonists on chemokine receptors, and prevent infiltration of leukocyte subsets in tissues. Later on it was shown that they can exert a repulsive effect on selective cell types, or synergize with other chemokines and inflammatory mediators to enhance chemokine receptors activities. The relevance of the fine-tuning modulation has been demonstrated in vivo in a multitude of processes, spanning from chronic inflammation to tissue regeneration, while its role in the tumor microenvironment needs further investigation. Moreover, naturally occurring autoantibodies targeting chemokines were found in tumors and autoimmune diseases. More recently in SARS-CoV-2 infection, the presence of several autoantibodies neutralizing chemokine activities distinguished disease severity, and they were shown to be beneficial, protecting from long-term sequelae. Here, we review the additional properties of chemokines that influence cell recruitment and activities. We believe these features need to be taken into account when designing novel therapeutic strategies targeting immunological disorders.
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4
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Zhao L, Liu Y, Ma B, Liu X, Wei R, Nian H. METTL3 inhibits autoreactive Th17 cell responses in experimental autoimmune uveitis via stabilizing ASH1L mRNA. FASEB J 2023; 37:e22803. [PMID: 36753389 DOI: 10.1096/fj.202201548r] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/06/2023] [Accepted: 01/23/2023] [Indexed: 02/09/2023]
Abstract
Methyltransferase like 3 (METTL3), a primary N6-methyladenosine (m6A) methyltransferase, has been implicated in various biological and pathological processes including immune responses. However, the functions and mechanisms of METTL3 in pathogenic T helper (Th)17 cells are poorly understood. Here we found significantly decreased METTL3 expression along with reduced m6A levels in eyeballs and T cells of experimental autoimmune uveitis (EAU). Overexpression of METTL3 ameliorated the development of EAU and suppressed pathogenic Th17 cell responses in vivo and in vitro. Mechanistically, METTL3 promoted the expression of absent, small, or homeotic-like 1 (ASH1L) via enhancing its stability in a YT521-B homology domain containing 2 (YTHDC2)-dependent manner, which further decreased the expression of IL-17 and IL-23 receptor (IL-23R), resulting in reduced pathogenic Th17 responses. Together, our data reveal a pivotal role of METTL3 in regulating pathogenic Th17 responses, which may contribute to human uveitis therapy.
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Affiliation(s)
- Lu Zhao
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Yuling Liu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Binyun Ma
- Department of Medicine/Hematology, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Xun Liu
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Ruihua Wei
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
| | - Hong Nian
- Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, China
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5
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Wang P, Hao P, Chen X, Li L, Zhou Y, Zhang X, Zhu L, Ying M, Han R, Wang L, Li X. Targeting HMGB1-NFκb Axis and miR-21 by Glycyrrhizin: Role in Amelioration of Corneal Injury in a Mouse Model of Alkali Burn. Front Pharmacol 2022; 13:841267. [PMID: 35586052 PMCID: PMC9108160 DOI: 10.3389/fphar.2022.841267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/01/2022] [Indexed: 11/13/2022] Open
Abstract
Corneal neovascularization (CNV) is a sight-threatening condition usually associated with various inflammatory settings including chemical injury. High mobility group box 1 (HMGB1) is identified as an inflammatory alarmin in diverse tissue damage. Here, we evaluate the expression of HMGB1 and the consequences of its inhibition through its selective inhibitor glycyrrhizin (GLY) in alkali burn-induced corneal inflammation and neovascularization. GLY effectively attenuated alkali burn-induced HMGB1 expression at both mRNA and protein levels. Furthermore, slit-lamp analysis, ink perfusion, H&E staining, and CD31 histochemical staining showed that GLY relieved corneal neovascularization, while GLY attenuated VEGF expression via inhibiting HMGB1/NF-κB/HIF-1α signal pathway. In addition, GLY treatment decreased the cytokine expression of CCL2 and CXCL5, accompanied by the reduction of their receptors of CCR2 and CXCR2. GLY diminished the inflammatory cell infiltration of the cornea, as well as reduced the expression of IL-1β, IL-6, and TNF-α. Moreover, treatment with GLY reduced the degree of cornea opacity through inactivating extracellular HMGB1 function, which otherwise induces TGF-β1 release and myofibroblast differentiation. Furthermore, we found that GLY treatment attenuated the upregulation of miR-21 levels in alkali burned cornea; while inhibition of miR-21in keratocytes in vitro, significantly inhibited TGF-β1-induced myofibroblast differentiation. Collectively, our results suggested that targeting HMGB1-NFκb axis and miR-21 by GLY could introduce a therapeutic approach to counter CNV.
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Affiliation(s)
- Peihong Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Peng Hao
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Xi Chen
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Linghan Li
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Yongying Zhou
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Xiaohan Zhang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Lin Zhu
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Ming Ying
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Ruifang Han
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Liming Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
| | - Xuan Li
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
- Nankai University Affiliated Eye Hospital, Tianjin, China
- *Correspondence: Xuan Li,
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6
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Mahaling B, Low SWY, Beck M, Kumar D, Ahmed S, Connor TB, Ahmad B, Chaurasia SS. Damage-Associated Molecular Patterns (DAMPs) in Retinal Disorders. Int J Mol Sci 2022; 23:ijms23052591. [PMID: 35269741 PMCID: PMC8910759 DOI: 10.3390/ijms23052591] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 12/13/2022] Open
Abstract
Damage-associated molecular patterns (DAMPs) are endogenous danger molecules released from the extracellular and intracellular space of damaged tissue or dead cells. Recent evidence indicates that DAMPs are associated with the sterile inflammation caused by aging, increased ocular pressure, high glucose, oxidative stress, ischemia, mechanical trauma, stress, or environmental conditions, in retinal diseases. DAMPs activate the innate immune system, suggesting their role to be protective, but may promote pathological inflammation and angiogenesis in response to the chronic insult or injury. DAMPs are recognized by specialized innate immune receptors, such as receptors for advanced glycation end products (RAGE), toll-like receptors (TLRs) and the NOD-like receptor family (NLRs), and purine receptor 7 (P2X7), in systemic diseases. However, studies describing the role of DAMPs in retinal disorders are meager. Here, we extensively reviewed the role of DAMPs in retinal disorders, including endophthalmitis, uveitis, glaucoma, ocular cancer, ischemic retinopathies, diabetic retinopathy, age-related macular degeneration, rhegmatogenous retinal detachment, proliferative vitreoretinopathy, and inherited retinal disorders. Finally, we discussed DAMPs as biomarkers, therapeutic targets, and therapeutic agents for retinal disorders.
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Affiliation(s)
- Binapani Mahaling
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
| | - Shermaine W. Y. Low
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
| | - Molly Beck
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
| | - Devesh Kumar
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
| | - Simrah Ahmed
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
| | - Thomas B. Connor
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
- Vitreoretinal Surgery, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Baseer Ahmad
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
- Vitreoretinal Surgery, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Shyam S. Chaurasia
- Ocular Immunology and Angiogenesis Lab, Department of Ophthalmology and Visual Sciences, Froedtert and MCW Eye Institute, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (B.M.); (S.W.Y.L.); (M.B.); (D.K.); (S.A.); (T.B.C.); (B.A.)
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Correspondence: ; Tel.: +1-414-955-2050
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7
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Lo SM, Hwang YS, Liu CL, Shen CN, Hong WH, Yang WC, Lee MH, Shen CR. Inhibiting TLR7 Expression in the Retinal Pigment Epithelium Suppresses Experimental Autoimmune Uveitis. Front Immunol 2022; 12:736261. [PMID: 35069523 PMCID: PMC8766412 DOI: 10.3389/fimmu.2021.736261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 12/13/2021] [Indexed: 11/16/2022] Open
Abstract
Experimental autoimmune uveitis (EAU), a model of human uveitis, is an organ-specific, T cell-mediated autoimmune disease. Autoreactive T cells can penetrate the blood-retinal barrier, which is a physical defense composed of tight junction-linked retinal pigment epithelial (RPE) cells. RPE cells serve as antigen-presenting cells (APCs) in the eye since they express MHC class I and II and Toll-like receptors (TLRs). Although previous studies have shown that supplementation with TLR agonists exacerbates uveitis, little is known about how TLR signaling in the RPE contributes to the development of uveitis. In this study, we isolated the RPE from EAU mice, which were induced by active immunization (aEAU) or adoptive transfer of antigen-specific T cells (tEAU). The expression of TLRs on RPE was determined, and both aEAU and tEAU mice exhibited induced tlr7 expression. The TLR7 agonist R848 was shown to induce aggressive disease progression, along with significantly elevated levels of the uveopathogenic cytokine IL-17. Furthermore, not only IL-17 but also R848 appeared to enhance the inflammatory response and to impair the barrier function of the RPE, indicating that TLR7 signaling is involved in the pathogenesis of EAU by affecting the behaviors of the RPE and consequently allowing the infiltration of autoreactive T cells intraocularly. Finally, local application of shRNA against TLR7 delivered by recombinant AAV effectively inhibited disease severity and reduced IFN-γ and IL-17. Our findings highlight an immunomodulatory role of RPE TLR7 in EAU development and provide a potential therapeutic strategy for autoimmune uveitis.
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Affiliation(s)
- Sheng-Min Lo
- Department and Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Yih-Shiou Hwang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Ophthalmology, Lin-Kou Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - Chao-Lin Liu
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan.,Biochemical Technology R&D Center, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Chia-Ning Shen
- Genomic Research Center, Academia Sinica, Taipei, Taiwan
| | - Wei-Hsin Hong
- Department and Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Wei-Cheng Yang
- Department and Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Meng-Hua Lee
- Department and Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan
| | - Chia-Rui Shen
- Department and Graduate Institute of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.,Department of Ophthalmology, Lin-Kou Chang Gung Memorial Hospital, Taoyuan City, Taiwan.,Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan City, Taiwan
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8
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Kaplan HJ, Sun D, Shao H. Damage-associated Molecular Patterns in Clinical and Animal Models of Uveitis. Ocul Immunol Inflamm 2021; 30:734-740. [PMID: 34477485 PMCID: PMC8891391 DOI: 10.1080/09273948.2021.1954203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Henry J Kaplan
- Department of Ophthalmology, Saint Louis University, St. Louis, Missouri, USA
| | - Deming Sun
- Doheny Eye Institute & Department Ophthalmology, David Geffen School of Medicine/UCLA, Los Angeles, California, USA
| | - Hui Shao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, USA
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9
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Xu H, Huang H, Zou X, Xia P, Foon WALS, Wang J. A novel bio-active microsphere for meniscus regeneration via inducing cell migration and chondrocyte differentiation. Biodes Manuf 2021. [DOI: 10.1007/s42242-020-00118-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Chen N, Wu J, Wang J, Piri N, Chen F, Xiao T, Zhao Y, Sun D, Kaplan HJ, Shao H. Short chain fatty acids inhibit endotoxin-induced uveitis and inflammatory responses of retinal astrocytes. Exp Eye Res 2021; 206:108520. [PMID: 33617852 DOI: 10.1016/j.exer.2021.108520] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/07/2021] [Accepted: 02/15/2021] [Indexed: 12/19/2022]
Abstract
Short chain fatty acids (SCFAs) are produced by gut microbiota as fermentation products of digestion-resistant oligosaccharides and fibers. Their primary roles are functioning as major energy sources for colon cells and assisting in gut homeostasis by immunomodulation. Recent evidence suggests that they affect various organs both at cellular and molecular levels, and regulate functions in distance sites including gene expression, cell proliferation, cell differentiation, apoptosis and inflammation. In this study, we examined whether SCFAs are present in the mouse eye and whether SCFAs affect inflammatory responses of the eye and retinal astrocytes (RACs). We observed that intra-peritoneal injected SCFAs were detected in the eye and reduced intraocular inflammation induced by lipopolysaccharide (LPS). Moreover, SCFAs displayed two disparate effects on LPS-stimulated RACs - namely, cytokine and chemokine production was reduced, but the ability to activate T cells was enhanced. Our results support the existence of gut-eye cross talk and suggest that SCFAs can cross the blood-eye-barrier via the systemic circulation. If applied at high concentrations, SCFAs may reduce inflammation and impact cellular functions in the intraocular milieu.
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Affiliation(s)
- Nu Chen
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA; Tianjin Key Laboratory of Retinal Functions and Diseases, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin, PR China
| | - Jun Wu
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA; Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Jingrui Wang
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA
| | - Niloofar Piri
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA
| | - Feilan Chen
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA
| | - Tong Xiao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA
| | - Yuan Zhao
- Department of Molecular and Cellular Biology, Sam Houston State University College of Osteopathic Medicine, Huntsville, TX, USA
| | - Deming Sun
- Doheny Eye Institute & Department. Ophthalmology, David Geffen School of Medicine/UCLA, Los Angeles, CA, USA
| | - Henry J Kaplan
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA
| | - Hui Shao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, KY, USA.
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11
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Xue J, Suarez JS, Minaai M, Li S, Gaudino G, Pass HI, Carbone M, Yang H. HMGB1 as a therapeutic target in disease. J Cell Physiol 2020; 236:3406-3419. [PMID: 33107103 DOI: 10.1002/jcp.30125] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/23/2020] [Accepted: 10/13/2020] [Indexed: 12/30/2022]
Abstract
High-mobility group box 1 (HMGB1) was initially recognized as a ubiquitous nuclear protein involved in maintaining the nucleosome integrity and facilitating gene transcription. HMGB1 has since been reevaluated to be a prototypical damage-associated molecular pattern (DAMP) protein, and together with its exogenous counterpart, pathogen-associated molecular pattern (PAMP), completes the body's alarmin system against disturbances in homeostasis. HMGB1 can be released into the extracellular matrix (ECM) by either granulocytes or necrotic cells to serve as a chemotaxis/cytokine during infection, endotoxemia, hypoxia, ischemia-reperfusion events, and cancer. Different isoforms of HMGB1 present with distinctive physiological functions in ECM-fully-reduced HMGB1 (all thiol) acts as the initial damage signal to recruit circulating myeloid cells, disulfide HMGB1 behaves as a cytokine to activate macrophages and neutrophils, and both signals are turned off when HMGB1 is terminally oxidized into the final sulfonate form. Targeting HMGB1 constitutes a favorable therapeutic strategy for inflammation and inflammatory diseases. Antagonists such as ethyl pyruvate inhibit HMGB1 by interfering with its cytoplasmic exportation, while others such as glycyrrhizin directly bind to HMGB1 and render it unavailable for its receptors. The fact that a mixture of different HMGB1 isoforms is present in the ECM poses a challenge in pinpointing the exact role of an individual antagonist. A more discriminative probe for HMGB1 may be necessary to advance our knowledge of HMGB1, HMGB1 antagonists, and inflammatory-related diseases.
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Affiliation(s)
- Jiaming Xue
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA.,John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - Joelle S Suarez
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Michael Minaai
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Shuangjing Li
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA.,Central Laboratory of Liaocheng People's Hospital, Liaocheng, Shandong, China
| | - Giovanni Gaudino
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Harvey I Pass
- Department of Cardiothoracic Surgery, New York University Langone Medical Center, New York, New York, USA
| | - Michele Carbone
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Haining Yang
- Thoracic Oncology Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
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12
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Liu B, Yin X, Wei H, Wang Z, Tang H, Qiu Y, Hao Y, Zhang X, Bi H, Guo D. Quantitative proteomic analysis of rat retina with experimental autoimmune uveitis based on tandem mass tag (TMT) peptide labeling coupled with LC-MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1153:122293. [PMID: 32750637 DOI: 10.1016/j.jchromb.2020.122293] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/29/2020] [Accepted: 07/27/2020] [Indexed: 11/25/2022]
Abstract
Uveitis is a recurrent, inflammatory eye disease that occurs in the retina, iris, ciliary body and choroid. Currently, the detailed mechanism is still unclear. Proteomics can offer a powerful set of tools for the direct high-throughput study and a key contribution to the understanding of protein functions. This approach can also allow us to compare the protein profiling of the cells in healthy and diseased states that can be used to identify proteins associated with disease development and progression. In the present study, we first established an autoimmune uveitis (EAU) rat model. On day 12 after immunization, we isolated the rat retinas from both normal and EAU animals to collect total proteins. Using tandem mass tag (TMT) peptide labeling coupled with LC-MS/MS quantitative proteomics technique, we identified the differentially expressed proteins in EAU rat retinas, performed bioinformatics analyses, validated the expression of the COX1, NADH1, C3, and C9 proteins, and determined the adenosine triphosphate (ATP) levels. The results indicated that there were 190 upregulated and 103 downregulated proteins in EAU rat retinas. Bioinformatics analysis revealed the differentially expressed proteins were mainly involved in acute inflammatory response, visual perception and eye photoreceptor cell differentiation that were mainly related to complement and coagulation cascades, phagosome, PI3K-Akt signaling, and metabolic pathways. In conclusion, based on the TMT-based quantitative proteomics technique, the differentially expressed proteins in EAU rat retinas were mainly associated with complement and coagulation cascades and metabolic pathways. Our findings will facilitate the understanding of the pathogenesis of uveitis and will be useful for subsequent studies.
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Affiliation(s)
- Bin Liu
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China; Linyi People's Hospital, No. 27#, Jiefang Road, Linyi 276005, China
| | - Xuewei Yin
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Huixia Wei
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Zhe Wang
- Department of Ophthalmology, Zaozhuang Hospital of Traditional Chinese Medicine, Zaozhuang 277000, China
| | - Hongying Tang
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Yan Qiu
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Yixian Hao
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Xiuyan Zhang
- Shandong University of Traditional Chinese Medicine, No. 4655#, Daxue Road, Jinan 250355, China
| | - Hongsheng Bi
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases, No. 48#, Yingxiongshan Road, Jinan 250002, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong, No. 48#, Yingxiongshan Road, Jinan 250002, China; Eye Institute of Shandong University of Traditional Chinese Medicine, No. 48#, Yingxiongshan Road, Jinan 250002, China
| | - Dadong Guo
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases, No. 48#, Yingxiongshan Road, Jinan 250002, China; Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases in Universities of Shandong, No. 48#, Yingxiongshan Road, Jinan 250002, China; Eye Institute of Shandong University of Traditional Chinese Medicine, No. 48#, Yingxiongshan Road, Jinan 250002, China.
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13
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Rapoport BL, Steel HC, Theron AJ, Heyman L, Smit T, Ramdas Y, Anderson R. High Mobility Group Box 1 in Human Cancer. Cells 2020; 9:E1664. [PMID: 32664328 PMCID: PMC7407638 DOI: 10.3390/cells9071664] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 12/12/2022] Open
Abstract
High mobility group box 1 (HMGB1) is an extremely versatile protein that is located predominantly in the nucleus of quiescent eukaryotic cells, where it is critically involved in maintaining genomic structure and function. During cellular stress, however, this multifaceted, cytokine-like protein undergoes posttranslational modifications that promote its translocation to the cytosol, from where it is released extracellularly, either actively or passively, according to cell type and stressor. In the extracellular milieu, HMGB1 triggers innate inflammatory responses that may be beneficial or harmful, depending on the magnitude and duration of release of this pro-inflammatory protein at sites of tissue injury. Heightened awareness of the potentially harmful activities of HMGB1, together with a considerable body of innovative, recent research, have revealed that excessive production of HMGB1, resulting from misdirected, chronic inflammatory responses, appears to contribute to all the stages of tumorigenesis. In the setting of established cancers, the production of HMGB1 by tumor cells per se may also exacerbate inflammation-related immunosuppression. These pro-inflammatory mechanisms of HMGB1-orchestrated tumorigenesis, as well as the prognostic potential of detection of elevated expression of this protein in the tumor microenvironment, represent the major thrusts of this review.
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Affiliation(s)
- Bernardo L. Rapoport
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (H.C.S.); (A.J.T.); (R.A.)
- The Medical Oncology Centre of Rosebank, Johannesburg 2196, South Africa; (L.H.); (T.S.)
| | - Helen C. Steel
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (H.C.S.); (A.J.T.); (R.A.)
| | - Annette J. Theron
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (H.C.S.); (A.J.T.); (R.A.)
| | - Liezl Heyman
- The Medical Oncology Centre of Rosebank, Johannesburg 2196, South Africa; (L.H.); (T.S.)
| | - Teresa Smit
- The Medical Oncology Centre of Rosebank, Johannesburg 2196, South Africa; (L.H.); (T.S.)
| | - Yastira Ramdas
- The Breast Care Centre, Netcare Milpark, 9 Guild Road, Parktown, Johannesburg 2193, South Africa;
| | - Ronald Anderson
- Department of Immunology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (H.C.S.); (A.J.T.); (R.A.)
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14
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Zhou Y, Wang T, Wang Y, Meng F, Ying M, Han R, Hao P, Wang L, Li X. Blockade of extracellular high-mobility group box 1 attenuates inflammation-mediated damage and haze grade in mice with corneal wounds. Int Immunopharmacol 2020; 83:106468. [PMID: 32279044 DOI: 10.1016/j.intimp.2020.106468] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/16/2020] [Accepted: 03/30/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE To investigate the expression of extracellular high mobility group box 1 (HMGB1) and the effect of its inhibitor glycyrrhizin (GL) in corneal wound healing. METHODS We treated C57BL/6J mice with GL or PBS before and after establishing a corneal injury model. Fluorescein staining, Ki-67 expression, haze grade, and haematoxylin/eosin (H&E) staining were used to assess treatment efficacy. The expression of HMGB1, NF-κB-p65, the NLRP3 inflammasome, IL-1β, CCL2, CXCL2, TGF-β1, α-SMA, fibronectin, and collagen III and neutrophil influx were examined by immunohistochemical staining, western blot, and RT-qPCR at various time points after corneal injury. RESULTS After corneal injury, HMGB1 transferred from the nucleus to the cytoplasm and was passively released or actively secreted into the corneal stroma from epithelial cells and inflammatory cells; however, this increase was attenuated by GL treatment. Furthermore, GL indirectly attenuated the expression of IL-1β by directly inhibiting extracellular HMGB1 functions, which activated the NF-κB-p65/NLRP3/IL-1β signalling pathway. Moreover, application of GL alleviated the neutrophil infiltration that delays wound healing, accompanied by the downregulation of expression of the chemokines CCL2 and CXCL2. More interestingly, application of GL reduced the degree of haze grade through inactivating extracellular HMGB1 functions that induced TGF-β1 release and myofibroblast differentiation. In addition, fluorescein and H&E staining and Ki-67 levels suggest that GL promotes regeneration of corneal epithelium. CONCLUSIONS After corneal injury, extracellular HMGB1 can be an essential driver to trigger a neutrophil- and cytokine-mediated inflammatory injury amplification loop. The application of GL promotes the cornea to restore transparency and integrity, which may be related to the attenuation of extracellular HMGB1 levels and function.
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Affiliation(s)
- Yongying Zhou
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China
| | - Ting Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Yuchuan Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China
| | - Fanlan Meng
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Ming Ying
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China
| | - Ruifang Han
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China
| | - Peng Hao
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China
| | - Liming Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China
| | - Xuan Li
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China; Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Institute, Tianjin, China; Nankai University Eye Hospital, Tianjin, China.
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15
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Li Z, Chen X, Chen Y, Li H, Yu J, Li Y, Zhu W, Xie Y, Tian Y, Su W, Liang D. Teriflunomide suppresses T helper cells and dendritic cells to alleviate experimental autoimmune uveitis. Biochem Pharmacol 2019; 170:113645. [DOI: 10.1016/j.bcp.2019.113645] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/19/2019] [Indexed: 11/29/2022]
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16
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Wang M, Gauthier A, Daley L, Dial K, Wu J, Woo J, Lin M, Ashby C, Mantell LL. The Role of HMGB1, a Nuclear Damage-Associated Molecular Pattern Molecule, in the Pathogenesis of Lung Diseases. Antioxid Redox Signal 2019; 31:954-993. [PMID: 31184204 PMCID: PMC6765066 DOI: 10.1089/ars.2019.7818] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 06/07/2019] [Indexed: 12/11/2022]
Abstract
Significance: High-mobility group protein box 1 (HMGB1), a ubiquitous nuclear protein, regulates chromatin structure and modulates the expression of many genes involved in the pathogenesis of lung cancer and many other lung diseases, including those that regulate cell cycle control, cell death, and DNA replication and repair. Extracellular HMGB1, whether passively released or actively secreted, is a danger signal that elicits proinflammatory responses, impairs macrophage phagocytosis and efferocytosis, and alters vascular remodeling. This can result in excessive pulmonary inflammation and compromised host defense against lung infections, causing a deleterious feedback cycle. Recent Advances: HMGB1 has been identified as a biomarker and mediator of the pathogenesis of numerous lung disorders. In addition, post-translational modifications of HMGB1, including acetylation, phosphorylation, and oxidation, have been postulated to affect its localization and physiological and pathophysiological effects, such as the initiation and progression of lung diseases. Critical Issues: The molecular mechanisms underlying how HMGB1 drives the pathogenesis of different lung diseases and novel therapeutic approaches targeting HMGB1 remain to be elucidated. Future Directions: Additional research is needed to identify the roles and functions of modified HMGB1 produced by different post-translational modifications and their significance in the pathogenesis of lung diseases. Such studies will provide information for novel approaches targeting HMGB1 as a treatment for lung diseases.
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Affiliation(s)
- Mao Wang
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Alex Gauthier
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - LeeAnne Daley
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Katelyn Dial
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Jiaqi Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Joanna Woo
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Mosi Lin
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Charles Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
| | - Lin L. Mantell
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York
- Center for Inflammation and Immunology, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York
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17
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Cheng KJ, Alshawsh MA, Mejia Mohamed EH, Thavagnanam S, Sinniah A, Ibrahim ZA. HMGB1: an overview of its versatile roles in the pathogenesis of colorectal cancer. Cell Oncol (Dordr) 2019; 43:177-193. [PMID: 31677065 DOI: 10.1007/s13402-019-00477-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In recent years, the high mobility group box-1 (HMGB1) protein, a damage-associated molecular pattern (DAMP) molecule, has been found to play multifunctional roles in the pathogenesis of colorectal cancer. Although much attention has been given to the diagnostic and prognostic values of HMGB1 in colorectal cancer, the exact functional roles of the protein as well as the mechanistic pathways involved have remained poorly defined. This systematic review aims to discuss what is currently known about the roles of HMGB1 in colorectal cancer development, growth and progression, and to highlight critical areas for future investigations. To achieve this, the bibliographic databases Pubmed, Scopus, Web of Science and ScienceDirect were systematically screened for articles from inception till June 2018, which address associations of HMGB1 with colorectal cancer. CONCLUSIONS HMGB1 plays multiple roles in promoting the pathogenesis of colorectal cancer, despite a few contradicting studies. HMGB1 may differentially regulate disease-related processes, depending on the redox status of the protein in colorectal cancer. Binding of HMGB1 to various protein partners may alter the impact of HMGB1 on disease progression. As HMGB1 is heavily implicated in the pathogenesis of colorectal cancer, it is crucial to further improve our understanding of the functional roles of HMGB1 not only in colorectal cancer, but ultimately in all types of cancers.
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Affiliation(s)
- Kim Jun Cheng
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | | | | | - Surendran Thavagnanam
- Paediatric Department, Royal London Hospital, Whitechapel Road, Whitechapel, London, E1 1BB, UK
| | - Ajantha Sinniah
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Zaridatul Aini Ibrahim
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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18
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Das S, Mishra KP, Chanda S, Ganju L, Singh SB. CXCR7: A key neuroprotective molecule against alarmin HMGB1 mediated CNS pathophysiology and subsequent memory impairment. Brain Behav Immun 2019; 82:319-337. [PMID: 31505255 DOI: 10.1016/j.bbi.2019.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/24/2019] [Accepted: 09/05/2019] [Indexed: 12/17/2022] Open
Abstract
High mobility group box 1 (HMGB1) is an endogenous alarmin that drives the pathogenesis of neurodegenerative disorders including cognitive decline. Therefore, HMGB1 is thought to be a common biomarker as well as promising therapeutic target for neuroinflammation associated with neurocognitive disorders. Here, for the first time, we have unmasked the potential inhibitory effect of a novel receptor of HMGB1-CXCL12 complex; atypical chemokine receptor 3 (ACKR3/CXCR7) on HMGB1 induced glial phenotype switching, neuroinflammation, and subsequent memory loss. Upregulation of CXCR7 inhibits HMGB1-CXCL12 complex induced peripheral immune cells infiltration to CNS by regulating blood-brain barrier (BBB) integrity in HMGB1 induced dementia model of mice. Whereas, gene knockdown study by RNA interference (non-invasive intranasal delivery to animal model) shows CXCR7 ablation aggravates inflammatory responses in hippocampus region and immune cell infiltration to CNS tissue by breached BBB. This study also indicates the important role of CXCR7 molecule in maintaining CNS homeostasis by balancing M1/M2 microglia, A1/A2 astrocytes, long term potentiation/long term depression markers which ultimately ameliorates HMGB1 induced neurodegeneration, synaptic depression and memory loss (assessed by both radial arm maze and Morris water maze) in male mice model of dementia. Overall, the study summarizes several significant protective functions afforded by CXCR7 against HMGB1 induced disbalance in neuroimmunological axis, neurodegeneration and memory loss and thereby provides a new paradigm for strategic development of novel therapeutics against neurodegenerative diseases with dementia as a common symptom.
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Affiliation(s)
- Sudeshna Das
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - K P Mishra
- Defence Research and Development Organisation (DRDO), New Delhi 110011, India
| | - Sudipta Chanda
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - Lilly Ganju
- Defence Institute of Physiology and Allied Sciences (DIPAS), Defence Research and Development Organisation (DRDO), Lucknow Road, Timarpur, Delhi 110054, India
| | - S B Singh
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, India.
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19
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Murakami Y, Ishikawa K, Nakao S, Sonoda KH. Innate immune response in retinal homeostasis and inflammatory disorders. Prog Retin Eye Res 2019; 74:100778. [PMID: 31505218 DOI: 10.1016/j.preteyeres.2019.100778] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 08/12/2019] [Accepted: 09/02/2019] [Indexed: 01/03/2023]
Abstract
Innate immune cells such as neutrophils, monocyte-macrophages and microglial cells are pivotal for the health and disease of the retina. For the maintenance of retinal homeostasis, these cells and immunosuppressive molecules in the eye actively regulate the induction and the expression of inflammation in order to prevent excessive activation and subsequent tissue damage. In the disease context, these regulatory mechanisms are modulated genetically and/or by environmental stimuli such as damage-associated molecular patterns (DAMPs), and a chronic innate immune response regulates or contributes to the formation of diverse retinal disorders such as uveitis, retinitis pigmentosa, retinal vascular diseases and retinal fibrosis. Here we summarize the recent knowledge regarding the innate immune response in both ocular immune regulation and inflammatory retinal diseases, and we describe the potential of the innate immune response as a biomarker and therapeutic target.
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Affiliation(s)
- Yusuke Murakami
- Department of Ophthalmology, Graduate School of Medical Science, Kyushu University, Fukuoka, 812-8582, Japan
| | - Keijiro Ishikawa
- Department of Ophthalmology, Graduate School of Medical Science, Kyushu University, Fukuoka, 812-8582, Japan
| | - Shintaro Nakao
- Department of Ophthalmology, Graduate School of Medical Science, Kyushu University, Fukuoka, 812-8582, Japan
| | - Koh-Hei Sonoda
- Department of Ophthalmology, Graduate School of Medical Science, Kyushu University, Fukuoka, 812-8582, Japan.
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20
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Hong B, Muili K, Bolyard C, Russell L, Lee TJ, Banasavadi-Siddegowda Y, Yoo JY, Yan Y, Ballester LY, Bockhorst KH, Kaur B. Suppression of HMGB1 Released in the Glioblastoma Tumor Microenvironment Reduces Tumoral Edema. MOLECULAR THERAPY-ONCOLYTICS 2018; 12:93-102. [PMID: 30719499 PMCID: PMC6350213 DOI: 10.1016/j.omto.2018.11.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 11/27/2018] [Indexed: 12/25/2022]
Abstract
HMGB1 is a ubiquitously expressed intracellular protein that binds DNA and transcription factors and regulates chromosomal structure and function. Under conditions of cell death or stress, it is actively or passively released by cells into the extracellular environment, where it functions as damage-associated molecular pattern (DAMP) that orchestrates pro-inflammatory cytokine release and inflammation. Our results demonstrate that HMGB1 is secreted in the tumor microenvironment after oncolytic HSV (oHSV) infection in vitro and in vivo. The impact of secreted HMGB1 on tumor growth and response to oncolytic viral therapy was evaluated by using HMGB1-blocking antibodies in vitro and in mice bearing intracranial tumors. IVIS and MRI imaging was utilized to visualize in real time virus spread, tumor growth, and changes in edema in mice. Our data showed that HMGB1 released in tumor microenvironment orchestrated increased vascular leakiness and edema. Further HMGB1 blocking antibodies rescued vascular leakiness and enhanced survival of intracranial glioma-bearing mice treated with oHSV.
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Affiliation(s)
- Bangxing Hong
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Kamaldeen Muili
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,College of Health and Human Services, Bowling Green State University, Bowling Green, OH, USA
| | - Chelsea Bolyard
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,OhioHealth Research & Innovation Institute, OhioHealth, Columbus, OH, USA
| | - Luke Russell
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Vyriad, Rochester, MN, USA
| | - Tae Jin Lee
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Yeshavanth Banasavadi-Siddegowda
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA.,Surgical Neurology Branch, NINDS, NIH, Bethesda, MD, USA
| | - Ji Young Yoo
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Yuanqing Yan
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Leomar Y Ballester
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA.,Department of Pathology and Laboratory Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Kurt H Bockhorst
- Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center, Houston, TX, USA
| | - Balveen Kaur
- Department of Neurosurgery, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA.,The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
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21
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Liang S, Lv ZT, Zhang JM, Wang YT, Dong YH, Wang ZG, Chen K, Cheng P, Yang Q, Guo FJ, Lu WW, Zhu WT, Chen AM. Necrostatin-1 Attenuates Trauma-Induced Mouse Osteoarthritis and IL-1β Induced Apoptosis via HMGB1/TLR4/SDF-1 in Primary Mouse Chondrocytes. Front Pharmacol 2018; 9:1378. [PMID: 30542285 PMCID: PMC6277802 DOI: 10.3389/fphar.2018.01378] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/09/2018] [Indexed: 01/08/2023] Open
Abstract
Necrostatin-1 (Nec-1) is a specific small molecule inhibitor of receptor-interacting protein kinase 1 (RIPK1) that specifically inhibits phosphorylation of RIPK1. RIPK1 regulates inflammation and cell death by interacting with receptor-interacting serine/threonine protein kinases 3(RIPK3). We hypothesized that Nec-1 may have anti-inflammatory efficacy in patients with osteoarthritis (OA), as the pathophysiology of OA involves the activation of inflammation-related signaling pathways and apoptosis. In this study, we explored the effects of Nec-1 on interleukin (IL)-1β-induced inflammation in mouse chondrocytes and the destabilised medial meniscus (DMM) mouse model. Inhibiting RIPK1 with Nec-1 dramatically suppressed catabolism both in vivo and in vitro, but did not inhibit changes in subchondral bone. Nec-1 abolished the in vitro increases in matrix metalloproteinase (MMP) and ADAM metallopeptidase with thrombospondin type 1 motif 5 (ADAMTs5) expression induced by IL-1β. However, adding high-mobility group box 1 (HMGB1) partially abrogated this effect, indicating the essential role of HMGB1 and Nec-1 in the protection of primary chondrocytes. Furthermore, Nec-1 decreased the expression of Toll-like receptor 4 (TLR4) and stromal cell-derived factor-1 (SDF-1), and attenuated the interaction between TLR4 and HMGB1. Western blot results suggested that Nec-1 significantly suppressed IL-1β-induced NF-κB transcriptional activity, but not MAPK pathway. Micro-computed tomography, immunohistochemical staining, and Safranin O/Fast Green staining were used in vivo to assess the degree of destruction of OA cartilage. The results show that NEC-1 can significantly reduce the degree of destruction of OA cartilage. Therefore, Nec-1 may be a novel therapeutic candidate to treat OA.
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Affiliation(s)
- Shuang Liang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Zheng-Tao Lv
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, United States
| | - Jia-Ming Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yu-Ting Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Yong-Hui Dong
- Department of Orthopaedic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zheng-Gang Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Kun Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China.,Department of Orthopaedic Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Peng Cheng
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Qing Yang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Feng-Jing Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Wei-Wei Lu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Wen-Tao Zhu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - An-Min Chen
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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22
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HMBG1 as a Driver of Inflammatory and Immune Processes in the Pathogenesis of Ocular Diseases. J Ophthalmol 2018; 2018:5195290. [PMID: 30473885 PMCID: PMC6220384 DOI: 10.1155/2018/5195290] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/14/2018] [Accepted: 07/30/2018] [Indexed: 12/21/2022] Open
Abstract
High-mobility group box 1 (HMGB1) is a nuclear protein that can also act as an extracellular trigger of inflammation, proliferation, and migration in eye diseases. It induces signaling pathways by binding to the receptor for advanced glycation end products (RAGE) and Toll-like receptors (TLRs) 2, 4, and 9. This proinflammatory activity is considered to be important in the pathogenesis of a wide range of ocular diseases resulting from hemodynamic changes, presence of neovascular endothelial cells, secretion of intraocular immune factors or inflammation, and apoptosis of retinal cell layers. Further work is needed to elucidate in detail how HMGB1 contributes to ocular disease and how its damaging activity can be modulated. In this review, we summarize current knowledge on HMGB1 as a ligand that can evoke inflammation and immune responses in ocular diseases.
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23
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Janssens R, Struyf S, Proost P. Pathological roles of the homeostatic chemokine CXCL12. Cytokine Growth Factor Rev 2018; 44:51-68. [PMID: 30396776 DOI: 10.1016/j.cytogfr.2018.10.004] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 10/19/2018] [Indexed: 12/12/2022]
Abstract
CXCL12 is a CXC chemokine that traditionally has been classified as a homeostatic chemokine. It contributes to physiological processes such as embryogenesis, hematopoiesis and angiogenesis. In contrast to these homeostatic functions, increased expression of CXCL12 in general, or of a specific CXCL12 splicing variant has been demonstrated in various pathologies. In addition to this increased or differential transcription of CXCL12, also upregulation of its receptors CXC chemokine receptor 4 (CXCR4) and atypical chemokine receptor 3 (ACKR3) contributes to the onset or progression of diseases. Moreover, posttranslational modification of CXCL12 during disease progression, through interaction with locally produced molecules or enzymes, also affects CXCL12 activity, adding further complexity. As CXCL12, CXCR4 and ACKR3 are broadly expressed, the number of pathologies wherein CXCL12 is involved is growing. In this review, the role of the CXCL12/CXCR4/ACKR3 axis will be discussed for the most prevalent pathologies. Administration of CXCL12-neutralizing antibodies or small-molecule antagonists of CXCR4 or ACKR3 delays disease onset or prevents disease progression in cancer, viral infections, inflammatory bowel diseases, rheumatoid arthritis and osteoarthritis, asthma and acute lung injury, amyotrophic lateral sclerosis and WHIM syndrome. On the other hand, CXCL12 has protective properties in Alzheimer's disease and multiple sclerosis, has a beneficial role in wound healing and has crucial homeostatic properties in general.
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Affiliation(s)
- Rik Janssens
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Molecular Immunology, B-3000 Leuven, Belgium
| | - Sofie Struyf
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Molecular Immunology, B-3000 Leuven, Belgium
| | - Paul Proost
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Molecular Immunology, B-3000 Leuven, Belgium.
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24
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Yun J, Xiao T, Zhou L, Beuerman RW, Li J, Zhao Y, Hadayer A, Zhang X, Sun D, Kaplan HJ, Shao H. Local S100A8 Levels Correlate With Recurrence of Experimental Autoimmune Uveitis and Promote Pathogenic T Cell Activity. Invest Ophthalmol Vis Sci 2018; 59:1332-1342. [PMID: 29625456 PMCID: PMC5846334 DOI: 10.1167/iovs.17-23127] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Purpose To investigate the role of damage-associated molecular patterns (DAMPs) in recurrent experimental autoimmune uveitis (EAU). Methods Recurrent EAU was induced in Lewis rats by interphotoreceptor retinoid-binding protein (IRBP) R16-peptide specific T cells (tEAU). Aqueous humor and serum samples were kinetically collected and DAMPs examined by quantitative proteomics, Western blot analysis, and ELISA. tEAU rats were treated with S100 inhibitor paquinimod followed by disease evaluation. The functions of T effector cells and T regulatory cells (Tregs) were compared between treated and nontreated groups. The expression of costimulatory molecules on antigen-presenting cells was examined by flow cytometry. Results S100A8, but not high mobility group box 1 (HMGB1), in the eye was found to be correlated with intraocular inflammatory episodes. Administration of paquinimod significantly protected tEAU rats from recurrence. Treated tEAU rats had fewer R16-specific Th1 and Th17 cells, but increased numbers of Tregs. R16-specific T cells from treated tEAU rats into naïve recipients prevented induction of tEAU by R16-specific T cells from nontreated tEAU rats. Moreover, APCs from treated tEAU rats expressed higher levels of a negative costimulatory molecule, CD200R, and lower levels of CD80, CD86, and MHC class II molecules compared to APCs from nontreated tEAU rats. An opposite pattern of expression of these molecules was observed on APCs incubated in vitro with recombinant S100A8. Conclusions Our data demonstrate a link between local expression of DAMPs and autoimmune responses, and suggest that complete S100A8/A9 blockade may be a new therapeutic target in recurrent autoimmune uveitis.
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Affiliation(s)
- Juan Yun
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States
| | - Tong Xiao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States
| | - Lei Zhou
- Singapore Eye Research Institute, Singapore.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Research Program, Duke-NUS Medical School, Singapore
| | - Roger W Beuerman
- Singapore Eye Research Institute, Singapore.,Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Ophthalmology and Visual Sciences Academic Clinical Research Program, Duke-NUS Medical School, Singapore
| | - Juanjuan Li
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States.,Department of Ophthalmology, The 2nd People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Yuan Zhao
- Department of Pharmaceutical Sciences, Sullivan University College of Pharmacy, Louisville, Kentucky, United States
| | - Amir Hadayer
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States
| | - Xiaomin Zhang
- Department of Uveitis & Ocular Immunology, Tianjin Medical University Eye Hospital, Eye Institute & School of Optometry and Ophthalmology, Tianjin, China
| | - Deming Sun
- Doheny Eye Institute, Department of Ophthalmology, David Geffen School of Medicine, UCLA, Los Angeles, California, United States
| | - Henry J Kaplan
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States
| | - Hui Shao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky, United States
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25
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Chu M, Zhou M, Jiang C, Chen X, Guo L, Zhang M, Chu Z, Wang Y. Staphylococcus aureus Phenol-Soluble Modulins α1-α3 Act as Novel Toll-Like Receptor (TLR) 4 Antagonists to Inhibit HMGB1/TLR4/NF-κB Signaling Pathway. Front Immunol 2018; 9:862. [PMID: 29922279 PMCID: PMC5996891 DOI: 10.3389/fimmu.2018.00862] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 04/06/2018] [Indexed: 01/23/2023] Open
Abstract
Phenol-soluble modulins (PSMs) have recently emerged as key virulence determinants, particularly in highly aggressive Staphylococcus aureus isolates. These peptides contribute to the pathogenesis of S. aureus infections, participating in multiple inflammatory responses. Here, we report a new role for S. aureus PSMs in high mobility group box-1 protein (HMGB1) induced inflammation by modulating toll-like receptor (TLR) 4 pathway. Direct ligation of TLR4 with S. aureus PSMα1–α3 and PSMβ1–β2 was identified by surface plasmon resonance. Remarkably, the binding affinity of TLR4 with HMGB1 was attenuated by PSMα1–α3. Further study revealed that PSMα1–α3 directly inhibited HMGB1-induced NF-κB activation and proinflammatory cytokines production in vitro using HEK-Blue hTLR4 cells and THP-1 cells. To analyze the molecular interactions between PSMs and TLR4, blast similarity search was performed and identified that PSMα1 and PSMβ2 were ideal templates for homology modeling. The three-dimensional structures of PSMα2, PSMα4, PSMβ1, and δ-toxin were successfully generated with MODELLER, and further refined using CHARMm. PSMs docking into TLR4 were done using ZDOCK, indicating that PSMα1–α3 compete with HMGB1 for interacting with the surrounding residues (336–477) of TLR4 domain. Our study reveals that S. aureus PSMα1–α3 can act as novel TLR4 antagonists, which account at least in part for the staphylococcal immune evasion. Modulation of this process will lead to new therapeutic strategies against S. aureus infections.
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Affiliation(s)
- Ming Chu
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University, Beijing, China
| | - Mingya Zhou
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University, Beijing, China
| | | | - Xi Chen
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University, Beijing, China
| | - Likai Guo
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University, Beijing, China
| | - Mingbo Zhang
- Pharmacy Departments, Liao Ning University of Traditional Chinese Medicine, Shenyang, China
| | - Zhengyun Chu
- Pharmacy Departments, Liao Ning University of Traditional Chinese Medicine, Shenyang, China
| | - Yuedan Wang
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University, Beijing, China
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26
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Retinal organotypic culture – A candidate for research on retinas. Tissue Cell 2018; 51:1-7. [DOI: 10.1016/j.tice.2018.01.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/26/2018] [Accepted: 01/29/2018] [Indexed: 01/09/2023]
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27
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Glade MJ, Meguid MM. A glance at…antioxidant and antiinflammatory properties of dietary cobalt. Nutrition 2017; 46:62-66. [PMID: 29290358 DOI: 10.1016/j.nut.2017.08.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 08/28/2017] [Indexed: 12/17/2022]
Affiliation(s)
| | - Michael M Meguid
- Professor Emeritus, Surgery, Neuroscience and Nutrition, Department of Surgery, University Hospital, Upstate Medical University, Syracuse, New York, USA
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28
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DAMPs Synergize with Cytokines or Fibronectin Fragment on Inducing Chondrolysis but Lose Effect When Acting Alone. Mediators Inflamm 2017; 2017:2642549. [PMID: 28804219 PMCID: PMC5540522 DOI: 10.1155/2017/2642549] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/03/2017] [Accepted: 05/29/2017] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE AND DESIGN To investigate whether endogenous damage-associated molecular patterns (DAMPs) or alarmins originated from mitochondria or nucleus stimulates inflammatory response in articular chondrocytes to cause chondrolysis which leads to cartilage degradation featured in posttraumatic osteoarthritis (PTOA). MATERIALS Primary cultures of bovine or human chondrocytes isolated from cartilage of weight-bearing joints. TREATMENT Chondrocytes were subjected to mitochondrial DAMPs (MTDs) or HMGB1, a nuclear DAMP (NuD), with or without the presence of an N-terminal 29 kDa fibronectin fragment (Fn-f) or proinflammatory cytokines (IL-1β and TNF-α). Injured cartilage-conditioned culturing medium containing a mixture of DAMPs was employed as a control. After 24 hrs, the protein expression of cartilage degrading metalloproteinases and iNOS in culture medium or cell lysates was examined with Western blotting, respectively. RESULTS HMGB1 was synergized with IL-1β in upregulating expression of MMP-3, MMP-13, ADAMTS-5, ADAM-8, and iNOS. Moreover, a moderate synergistic effect was detected between HMGB1 and Fn-f or between MTDs and TNF-α on MMP-3 expression. However, when acting alone, MTDs or HMGB1 did not upregulate cartilage degrading enzymes or iNOS. CONCLUSION MTDs or HMGB1 could only stimulate inflammatory response in chondrocytes with the presence of cytokines or Fn-f.
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