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Zheng Y, Mou Z, Tan S, Wang X, Yuan J, Li H. IL-17A enhances the inflammatory response of glaucoma through Act1/TRAF6/NF-κB pathway. Neurochem Int 2024; 178:105787. [PMID: 38830510 DOI: 10.1016/j.neuint.2024.105787] [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: 02/21/2024] [Revised: 05/21/2024] [Accepted: 06/01/2024] [Indexed: 06/05/2024]
Abstract
OBJECTIVES To investigate the possible roles of Interleukin 17A (IL-17A) and IL-17A neutralizing antibodies (IL-17Ab) in glaucoma and the potential mechanisms. METHODS The two glaucoma animal models, chronic ocular hypertension (COH) and N-methyl-D-aspartate (NMDA)-induced retinal ganglion cell (RGC) damage, were established and treated with intravitreal injection of IL-17A or IL-17Ab. Intraocular pressure (IOP) was measured by a rebound tonometer. The retina and RGC injury were evaluated by HE staining, TUNLE assay and Brn3a immunofluorescence staining. The frequency of IL-17A+CD4+T cells in peripheral blood was detected by flow cytometry. The expression of glial fibrillary acidic protein (GFAP) was detected by immunofluorescence staining, Western Blot and qPCR in retina. The RNA and protein expression of Act1/TRAF6/NF-κB were detected by Western Blot and qPCR in retina. RESULTS The expression of IL-17A increased in glaucoma models. After intravitreal injection of IL-17A, in the retina, the number of RGCs decreased, the apoptosis of RGCs increased, the Müller cell gliosis was more obvious. In addition, peripheral inflammation aggravated. Whereas the intravitreal injection of IL-17Ab alleviated the relevant manifestations and peripheral inflammation, reduced the gliosis of Müller cells. In the COH model, IOP increased after the injection of IL-17A, while the intravitreal injection of IL-17Ab led to a decrease in IOP. Furthermore, IL-17A promotes the apoptosis of RGCs by binding to IL-17A receptor, activating Act1/TRAF6/NF-κB pathways. CONCLUSION IL-17A plays a role in and aggravates RGC damage in glaucoma. IL-17Ab can neutralize the pro-inflammatory effect of IL-17A and have a protective function in glaucoma. These findings reveal the importance of IL-17A in the pathogenesis of glaucoma, which will shed light on a novel direction for the prevention and treatment of glaucoma, and also provide a reference for further research on other retinal diseases.
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Affiliation(s)
- Yunfan Zheng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Zhenni Mou
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Sisi Tan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Xiaochen Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Jingchang Yuan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Hong Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory for the Prevention and Treatment of Major Blinding Eye Diseases, Chongqing Eye Institute, Chongqing Branch (Municipality Division) of National Clinical Research Center for Ocular Diseases, Chongqing, China.
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Shah J, Tan B, Wong D, Abdul Gani NFB, Hu Q, Liu X, Chua J. Evaluation of thickness of individual macular retinal layers in diabetic eyes from optical coherence tomography. Sci Rep 2024; 14:17909. [PMID: 39095380 PMCID: PMC11297304 DOI: 10.1038/s41598-024-68552-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: 12/08/2023] [Accepted: 07/24/2024] [Indexed: 08/04/2024] Open
Abstract
The effect of diabetes mellitus (DM) on individual retinal layers remains incompletely understood. We evaluated the intra-retinal layer thickness alterations in 71 DM eyes with no diabetic retinopathy (DR), 90 with mild DR, and 63 with moderate DR without macular edema, using spectral-domain optical coherence tomography (SD-OCT) and the Iowa Reference Algorithm for automated retinal layer segmentation. The average thickness of 10 intra-retinal layers was then corrected for ocular magnification using axial length measurements, and pairwise comparisons were made using multivariable linear regression models adjusted for gender and race. In DM no DR eyes, significant thinning was evident in the ganglion cell layer (GCL; p < 0.001), inner nuclear layer (INL; p = 0.001), and retinal pigment epithelium (RPE; p = 0.014) compared to normal eyes. Additionally, mild DR eyes exhibited a thinner inner plexiform layer (IPL; p = 0.008) than DM no DR eyes. Conversely, moderate DR eyes displayed thickening in the INL, outer nuclear layer, IPL, and retinal nerve fiber layer (all p ≤ 0.002), with notably worse vision. These findings highlight distinctive patterns: early diabetic eyes experience thinning in specific retinal layers, while moderate DR eyes exhibit thickening of certain layers and slightly compromised visual acuity, despite the absence of macular edema. Understanding these structural changes is crucial for comprehending diabetic eye complications.
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Affiliation(s)
- Janika Shah
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
| | - Bingyao Tan
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
- SERI-NTU Advanced Ocular Engineering (STANCE), Singapore, Singapore
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore
| | - Damon Wong
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
- SERI-NTU Advanced Ocular Engineering (STANCE), Singapore, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, National University of Singapore, Singapore, Singapore
| | - Nur Fidyana Binte Abdul Gani
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
| | - Qinglan Hu
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
| | - Xinyu Liu
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore
- SERI-NTU Advanced Ocular Engineering (STANCE), Singapore, Singapore
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore
| | - Jacqueline Chua
- Singapore Eye Research Institute, Singapore National Eye Centre, 20 College Road, The Academia, Level 6, Discovery Tower, Singapore, 169856, Singapore.
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, National University of Singapore, Singapore, Singapore.
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3
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Jiang Z, Li Z, Chen Y, Nie N, Liu X, Liu J, Shen Y. MLN4924 alleviates autoimmune myocarditis by promoting Act1 degradation and blocking Act1-mediated mRNA stability. Int Immunopharmacol 2024; 139:112716. [PMID: 39038386 DOI: 10.1016/j.intimp.2024.112716] [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: 12/18/2023] [Revised: 07/01/2024] [Accepted: 07/15/2024] [Indexed: 07/24/2024]
Abstract
BACKGROUND Prolonged exposure to interleukin-17A (IL-17A) can induce autoimmune myocarditis, and MLN4924, an inhibitor of NEDD8 activating enzyme (NAE), has been reported to effectively suppress various inflammatory reactions. However, the effects of MLN4924 in IL-17A-mediated inflammation associated with autoimmune myocarditis remain uncertain. METHODS An experimental autoimmune myocarditis (EAM) model was established and treated with MLN4924. The inflammation degree of heart tissues was assessed histopathologically. The expression levels of inflammatory cytokines and chemokines were measured using ELISA and RT-qPCR, respectively. Additionally, the interaction of biomacromolecules was detected through co-immunoprecipitation (Co-IP) and RNA immunoprecipitation (RIP). RESULTS MLN4924 could attenuate IL-17A-induced inflammation. In the in vivo studies, MLN4924 treatment improved inflammatory responses, diminished immune cell infiltration and tissue fibrosis, and reduced the secretion of various inflammatory cytokines in serum, including IL-1β, IL-6, TNF-α, and MCP-1. In vitro experiments further corroborated these findings, showing that MLN4924 treatment reduced the secretion and transcription of pro-inflammatory factors, particularly MCP-1. Mechanistically, we confirmed that MLN4924 promoted Act1 ubiquitination degradation and disrupted Act1's interaction with IL-17R, thereby impeding the formation of the IL-17R/Act1/TRAF6 complex and subsequent activation of TAK1, c-Jun, and p65. Moreover, MLN4924 interfered with Act1's binding to mRNA, resulting in mRNA instability. CONCLUSIONS In conclusion, MLN4924 effectively alleviated inflammatory symptoms in EAM by disrupting the interaction between IL and 17R and Act1, thereby reducing Act1-mediated mRNA stability and resulting in decreased expression of pro-inflammatory factors.
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Affiliation(s)
- Zuli Jiang
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zhuolun Li
- Henan Engineering Research Center of Clinical Mass Spectrometry for Precision Medicine, Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Youming Chen
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Na Nie
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Xiner Liu
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jinlin Liu
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yan Shen
- Department of Clinical Laboratory, Key Laboratory of Henan province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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Elahi R, Nazari M, Mohammadi V, Esmaeilzadeh K, Esmaeilzadeh A. IL-17 in type II diabetes mellitus (T2DM) immunopathogenesis and complications; molecular approaches. Mol Immunol 2024; 171:66-76. [PMID: 38795686 DOI: 10.1016/j.molimm.2024.03.009] [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: 11/25/2023] [Revised: 03/06/2024] [Accepted: 03/19/2024] [Indexed: 05/28/2024]
Abstract
Chronic inflammation has long been considered the characteristic feature of type II diabetes mellitus (T2DM) Immunopathogenesis. Pro-inflammatory cytokines are considered the central drivers of the inflammatory cascade leading to β-cell dysfunction and insulin resistance (IR), two major pathologic events contributing to T2DM. Analyzing the cytokine profile of T2DM patients has also introduced interleukin-17 (IL-17) as an upstream regulator of inflammation, regarding its role in inducing the nuclear factor-kappa B (NF-κB) pathway. In diabetic tissues, IL-17 induces the expression of inflammatory cytokines and chemokines. Hence, IL-17 can deteriorate insulin signaling and β-cell function by activating the JNK pathway and inducing infiltration of neutrophils into pancreatic islets, respectively. Additionally, higher levels of IL-17 expression in patients with diabetic complications compared to non-complicated individuals have also proposed a role for IL-17 in T2DM complications. Here, we highlight the role of IL-17 in the Immunopathogenesis of T2DM and corresponding pathways, recent advances in preclinical and clinical studies targeting IL-17 in T2DM, and corresponding challenges and possible solutions.
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Affiliation(s)
- Reza Elahi
- School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mahdis Nazari
- School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Vahid Mohammadi
- School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Kimia Esmaeilzadeh
- Department of Medical Nanotechnology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Abdolreza Esmaeilzadeh
- Department of Immunology, Zanjan University of Medical Sciences, Zanjan, Iran; Cancer Gene Therapy Research Center (CGRC), Zanjan University of Medical Sciences, Zanjan, Iran.
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5
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Li J, Zhao T, Sun Y. Interleukin-17A in diabetic retinopathy: The crosstalk of inflammation and angiogenesis. Biochem Pharmacol 2024; 225:116311. [PMID: 38788958 DOI: 10.1016/j.bcp.2024.116311] [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: 01/02/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Diabetic retinopathy (DR) is a severe ocular complication of diabetes which can leads to irreversible vision loss in its late-stage. Chronic inflammation results from long-term hyperglycemia contributes to the pathogenesis and progression of DR. In recent years, the interleukin-17 (IL-17) family have attracted the interest of researchers. IL-17A is the most widely explored cytokine in IL-17 family, involved in various acute and chronic inflammatory diseases. Growing body of evidence indicate the role of IL-17A in the pathogenesis of DR. However, the pro-inflammatory and pro-angiogenic effect of IL-17A in DR have not hitherto been reviewed. Gaining an understanding of the pro-inflammatory role of IL-17A, and how IL-17A control/impact angiogenesis pathways in the eye will deepen our understanding of how IL-17A contributes to DR pathogenesis. Herein, we aimed to thoroughly review the pro-inflammatory role of IL-17A in DR, with focus in how IL-17A impact inflammation and angiogenesis crosstalk.
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Affiliation(s)
- Jiani Li
- Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Clinical Research Center of Ophthalmic Disease, Changsha, Hunan, China
| | - Tantai Zhao
- Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Clinical Research Center of Ophthalmic Disease, Changsha, Hunan, China
| | - Yun Sun
- Department of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Clinical Research Center of Ophthalmic Disease, Changsha, Hunan, China.
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6
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Ding Y, Chen L, Xu J, Liu Q. NR2E3 inhibits the inflammation and apoptosis in diabetic retinopathy by regulating the AHR/IL-17A signaling pathway. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03213-5. [PMID: 38884674 DOI: 10.1007/s00210-024-03213-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 06/03/2024] [Indexed: 06/18/2024]
Abstract
Diabetic retinopathy (DR) is the most prevalent microvascular complication of diabetes mellitus, and it is the primary cause of blindness in the working-age population worldwide. Nevertheless, the pathogenic molecular mechanisms of DR remain elusive. Hub genes were identified through bioinformatics analysis in the GSE102485 and GSE60436 datasets. The DR mouse model was induced using streptozotocin (STZ, 150 mg/kg), and pathological changes in retinal tissue were assessed via HE staining. Apoptosis in retinal tissue cells was evaluated by the TUNEL assay. RT-qPCR and ELISA assays were employed to measure hub genes and inflammatory factor levels, respectively. The aryl hydrocarbon receptor (AHR)/interleukin (IL)-17A (AHR/IL-17A) pathway-associated proteins were detected by western blot. In the high glucose (HG)-induced ARPE-19 cells, CCK-8 and flow cytometry were used to perform cell function studies. Six hub genes associated with DR were screened. The expression levels of RHO, PRPH2, CRX, RCVRN, and NR2E3 were reduced, while the COL1A2 was elevated. NR2E3 overexpression reduced inflammatory factor (TNF-α, IL-1β, and IL-6) and cell apoptosis levels in DR. Furthermore, NR2E3 overexpression promoted HG-induced ARPE-19 cell proliferation. Mechanistically, NR2E3 overexpression facilitated the protein expression of AHR, while suppressing the IL-17 and ACT1 expressions. The introduction of Kyn-101, an AHR inhibitor, notably reversed the inhibitory effects of NR2E3 overexpression on inflammation and apoptosis, which were validated both in vivo and in vitro. NR2E3 inhibits the inflammation and apoptosis by regulating the AHR/IL-17A pathway, providing new insights into the DR treatment.
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Affiliation(s)
- Yuanyuan Ding
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou City, 510515, Guangdong Province, China
| | - Linjiang Chen
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou City, 510515, Guangdong Province, China
| | - Jing Xu
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou City, 510515, Guangdong Province, China
| | - Qiong Liu
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou City, 510515, Guangdong Province, China.
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7
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Reddy SK, Devi V, Seetharaman ATM, Shailaja S, Bhat KMR, Gangaraju R, Upadhya D. Cell and molecular targeted therapies for diabetic retinopathy. Front Endocrinol (Lausanne) 2024; 15:1416668. [PMID: 38948520 PMCID: PMC11211264 DOI: 10.3389/fendo.2024.1416668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 05/27/2024] [Indexed: 07/02/2024] Open
Abstract
Diabetic retinopathy (DR) stands as a prevalent complication in the eye resulting from diabetes mellitus, predominantly associated with high blood sugar levels and hypertension as individuals age. DR is a severe microvascular complication of both type I and type II diabetes mellitus and the leading cause of vision impairment. The critical approach to combatting and halting the advancement of DR lies in effectively managing blood glucose and blood pressure levels in diabetic patients; however, this is seldom achieved. Both human and animal studies have revealed the intricate nature of this condition involving various cell types and molecules. Aside from photocoagulation, the sole therapy targeting VEGF molecules in the retina to prevent abnormal blood vessel growth is intravitreal anti-VEGF therapy. However, a substantial portion of cases, approximately 30-40%, do not respond to this treatment. This review explores distinctive pathophysiological phenomena of DR and identifiable cell types and molecules that could be targeted to mitigate the chronic changes occurring in the retina due to diabetes mellitus. Addressing the significant research gap in this domain is imperative to broaden the treatment options available for managing DR effectively.
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Affiliation(s)
- Shivakumar K. Reddy
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Vasudha Devi
- Department of Pharmacology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Amritha T. M. Seetharaman
- Department of Ophthalmology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - S. Shailaja
- Department of Ophthalmology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Kumar M. R. Bhat
- Department of Anatomy, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Rajashekhar Gangaraju
- Department of Ophthalmology, The University of Tennessee Health Science Center, Memphis, TN, United States
- Department of Anatomy & Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Dinesh Upadhya
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
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Li X, Qin W, Qin X, Wu D, Gao C, Luo Y, Xu M. Meta-analysis of the relationship between ocular and peripheral serum IL-17A and diabetic retinopathy. Front Endocrinol (Lausanne) 2024; 15:1320632. [PMID: 38711982 PMCID: PMC11070548 DOI: 10.3389/fendo.2024.1320632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 03/26/2024] [Indexed: 05/08/2024] Open
Abstract
Purpose A systematic evaluation and Meta-analysis were performed to determine the relationship between IL-17A levels in ocular aqueous and peripheral venous serum samples and diabetic retinopathy (DR). Methods PubMed, Embase, Web of Science, and CNKI databases were searched from the time of library construction to 2023-09-20.The results were combined using a random-effects model, sensitivity analyses were performed to determine whether the arithmetic was stable and reliable, and subgroup analyses were used to look for possible sources of heterogeneity. Results A total of 7 case-control studies were included. The level of IL-17A was higher in the Nonproliferative DR(NPDR) group than in the Non-DR(NDR) group [SMD=2.07,95%CI(0.45,3.68),P=0.01], and the level of IL-17A in the proliferating DR(PDR) group was higher than that of the NDR group [SMD=4.66,95%CI(1.23,8.08),P<0.00001]. IL-17A levels in peripheral serum and atrial fluid were significantly higher in NPDR and PDR patients than in non-DR patients in subgroup analyses, and detection of peripheral serum IL-17A concentrations could help to assess the risk of progression from NPDR to PDR. Sensitivity analyses suggested that the results of the random-effects arithmetic were stable and reliable. Subgroup analyses based on assay method and sample source showed that the choice of these factors would largely influence the relationship between IL-17A levels and DR. Conclusion Elevated peripheral serum and ocular aqueous humor IL-17A levels in diabetic patients are associated with the risk of DR, IL-17A may serve as a potential predictor or therapeutic target for DR, and IL-17A may be an important predictor of inflammation for the progression of NPDR to PDR. Systematic review registration https://www.crd.york.ac.uk/prospero/, identifier CRD42024532900.
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Affiliation(s)
- Xiaodong Li
- The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Ophthalmology, Guiyang, China
| | - Wei Qin
- Zhongshan Hospital of Traditional Chinese Medicine, Ophthalmology, Zhongshan, China
| | - Xuewei Qin
- The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Ophthalmology, Guiyang, China
| | - Dandan Wu
- The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Ophthalmology, Guiyang, China
| | - Chenyuan Gao
- The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Ophthalmology, Guiyang, China
| | - Yinyue Luo
- The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Ophthalmology, Guiyang, China
| | - Mingchao Xu
- Traditional Chinese Medicine Hospital of Meishan, Ophthalmology, Meishan, China
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9
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Zhao L, Hu H, Zhang L, Liu Z, Huang Y, Liu Q, Jin L, Zhu M, Zhang L. Inflammation in diabetes complications: molecular mechanisms and therapeutic interventions. MedComm (Beijing) 2024; 5:e516. [PMID: 38617433 PMCID: PMC11014467 DOI: 10.1002/mco2.516] [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: 06/03/2023] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 04/16/2024] Open
Abstract
At present, diabetes mellitus (DM) has been one of the most endangering healthy diseases. Current therapies contain controlling high blood sugar, reducing risk factors like obesity, hypertension, and so on; however, DM patients inevitably and eventually progress into different types of diabetes complications, resulting in poor quality of life. Unfortunately, the clear etiology and pathogenesis of diabetes complications have not been elucidated owing to intricate whole-body systems. The immune system was responsible to regulate homeostasis by triggering or resolving inflammatory response, indicating it may be necessary to diabetes complications. In fact, previous studies have been shown inflammation plays multifunctional roles in the pathogenesis of diabetes complications and is attracting attention to be the meaningful therapeutic strategy. To this end, this review systematically concluded the current studies over the relationships of susceptible diabetes complications (e.g., diabetic cardiomyopathy, diabetic retinopathy, diabetic peripheral neuropathy, and diabetic nephropathy) and inflammation, ranging from immune cell response, cytokines interaction to pathomechanism of organ injury. Besides, we also summarized various therapeutic strategies to improve diabetes complications by target inflammation from special remedies to conventional lifestyle changes. This review will offer a panoramic insight into the mechanisms of diabetes complications from an inflammatory perspective and also discuss contemporary clinical interventions.
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Affiliation(s)
- Lu Zhao
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Haoran Hu
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Lin Zhang
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Zheting Liu
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Yunchao Huang
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Qian Liu
- National Demonstration Center for Experimental Traditional Chinese Medicines Education (Zhejiang Chinese Medical University)College of Pharmaceutical Science, Zhejiang Chinese Medical UniversityHangzhouChina
| | - Liang Jin
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
- Shanghai Key Laboratory of Compound Chinese Medicines, The Ministry of Education Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Meifei Zhu
- Department of Critical Care MedicineThe First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine)HangzhouChina
| | - Ling Zhang
- Department of Biology and MedicineCollege of Life Science, Zhejiang Chinese Medical UniversityHangzhouChina
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Llorián-Salvador M, Cabeza-Fernández S, Gomez-Sanchez JA, de la Fuente AG. Glial cell alterations in diabetes-induced neurodegeneration. Cell Mol Life Sci 2024; 81:47. [PMID: 38236305 PMCID: PMC10796438 DOI: 10.1007/s00018-023-05024-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: 08/20/2023] [Revised: 10/09/2023] [Accepted: 10/29/2023] [Indexed: 01/19/2024]
Abstract
Type 2 diabetes mellitus is a global epidemic that due to its increasing prevalence worldwide will likely become the most common debilitating health condition. Even if diabetes is primarily a metabolic disorder, it is now well established that key aspects of the pathogenesis of diabetes are associated with nervous system alterations, including deleterious chronic inflammation of neural tissues, referred here as neuroinflammation, along with different detrimental glial cell responses to stress conditions and neurodegenerative features. Moreover, diabetes resembles accelerated aging, further increasing the risk of developing age-linked neurodegenerative disorders. As such, the most common and disabling diabetic comorbidities, namely diabetic retinopathy, peripheral neuropathy, and cognitive decline, are intimately associated with neurodegeneration. As described in aging and other neurological disorders, glial cell alterations such as microglial, astrocyte, and Müller cell increased reactivity and dysfunctionality, myelin loss and Schwann cell alterations have been broadly described in diabetes in both human and animal models, where they are key contributors to chronic noxious inflammation of neural tissues within the PNS and CNS. In this review, we aim to describe in-depth the common and unique aspects underlying glial cell changes observed across the three main diabetic complications, with the goal of uncovering shared glial cells alterations and common pathological mechanisms that will enable the discovery of potential targets to limit neuroinflammation and prevent neurodegeneration in all three diabetic complications. Diabetes and its complications are already a public health concern due to its rapidly increasing incidence, and thus its health and economic impact. Hence, understanding the key role that glial cells play in the pathogenesis underlying peripheral neuropathy, retinopathy, and cognitive decline in diabetes will provide us with novel therapeutic approaches to tackle diabetic-associated neurodegeneration.
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Affiliation(s)
- María Llorián-Salvador
- Diabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain.
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, Belfast, UK.
| | - Sonia Cabeza-Fernández
- Institute for Health and Biomedical Research of Alicante (ISABIAL), Alicante, Spain
- Institute of Neuroscience CSIC-UMH, San Juan de Alicante, Spain
| | - Jose A Gomez-Sanchez
- Institute for Health and Biomedical Research of Alicante (ISABIAL), Alicante, Spain
- Institute of Neuroscience CSIC-UMH, San Juan de Alicante, Spain
| | - Alerie G de la Fuente
- Institute for Health and Biomedical Research of Alicante (ISABIAL), Alicante, Spain.
- Institute of Neuroscience CSIC-UMH, San Juan de Alicante, Spain.
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11
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Hisamuddin ASDB, Naomi R, Manan KAB, Bahari H, Othman F, Embong H, Ismail A, Ahmed QU, Jumidil SH, Hussain MK, Zakaria ZA. The role of lutein-rich purple sweet potato leaf extract on the amelioration of diabetic retinopathy in streptozotocin-induced Sprague-Dawley rats. Front Pharmacol 2023; 14:1175907. [PMID: 37274105 PMCID: PMC10232805 DOI: 10.3389/fphar.2023.1175907] [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: 02/28/2023] [Accepted: 04/21/2023] [Indexed: 06/06/2023] Open
Abstract
The objective of this study is to access the effect of purple sweet potato leaf (PSPL) extract on diabetic retinopathy (DR) of streptozotocin (STZ)-induced male Sprague-Dawley (SD) rats. In this study, rats were injected intraperitoneally with a single dose of 60 mg/kg STZ, and diabetes was confirmed on day 7. Rats were further divided into a few groups, which were then orally administered with one of the following treatments: 25 mg/kg of gliclazide (D25G), 200 mg/kg of PSPL extract (DT 200), and 400 mg/kg of PSPL extract (DT 400). However, the normal control (NS) and control group for diabetic (DNS) were given normal saline (NS) for 12 weeks. The results show that the treated group demonstrated a reduction in serum oral glucose tolerance test (OGTT) levels of DT 200 and DT 400, and an increase in the serum and retinal insulin levels, and restored oxidative stress markers in serum and retina on week 12. The PSPL extract exhibited protective effects in maintaining the kidney, liver, retina, and pancreas architecture in 400 mg/kg compared to the 200 mg/kg treated group and D25G, thereby restoring fully transparent lenses in diabetes-induced rats. In conclusion, 400 mg/kg PSPL is the most effective dose for the amelioration of STZ-induced DR pathology in male SD rats.
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Affiliation(s)
- Ahmad Safiyyu'd-din Bin Hisamuddin
- Borneo Research on Algesia, Inflammation and Neurodegeneration (BRAIN) Group, Faculty of Medicine and Health Sciences, Sabah Universiti Malaysia, Kota Kinabalu, Sabah, Malaysia
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Ruth Naomi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Khairul Aiman Bin Manan
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Hasnah Bahari
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Fezah Othman
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Hashim Embong
- Department of Emergency Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Amin Ismail
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Qamar Uddin Ahmed
- Department of Pharmaceutical Chemistry, Kulliyah of Pharmacy, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Siti Hadizah Jumidil
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Mohd Khairi Hussain
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Zainul Amiruddin Zakaria
- Borneo Research on Algesia, Inflammation and Neurodegeneration (BRAIN) Group, Faculty of Medicine and Health Sciences, Sabah Universiti Malaysia, Kota Kinabalu, Sabah, Malaysia
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12
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Li N, Guo XL, Xu M, Chen JL, Wang YF, Xiao YG, Gao AS, Zhang LC, Liu XZ, Wang TH. Network pharmacology mechanism of Scutellarin to inhibit RGC pyroptosis in diabetic retinopathy. Sci Rep 2023; 13:6504. [PMID: 37081038 PMCID: PMC10119430 DOI: 10.1038/s41598-023-33665-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 04/17/2023] [Indexed: 04/22/2023] Open
Abstract
To investigate the effect of scutellarin (SCU) in diabetic retinopathy (DR) and explore the associated molecular network mechanism. The animal model of DR was established from diabetic mellitus (DM) rats by intraperitoneally injected streptozotocin (STZ) at dosage 55 mg/kg. Meanwhile, SCU was intraperitoneally administrated to protect retina from cell pyroptosis induced by DM, and cell pyroptosis was detected by using HE, Nissl staining, and immunofluorescence recognition. Moreover, the hub gene involving in pyroptosis in DR was screened by bioinformatics and network pharmacology, designated as Venny intersection screen, GO and KEGG analysis, PPI protein interaction, and molecular docking. Lastly, the expressional change of hub genes were validated with experimental detection. Cell pyroptosis of the DR, specifically in retina ganglion cells (RGC), was induced in DM rats; SCU administration results in significant inhibition in the cell pyroptosis in DR. Mechanically, 4084 genes related to DR were screened from GeneCards and OMIM databases, and 120 SCU therapeutic targets were obtained, by using GeneCards, TCMSP with Swiss Target Prediction databases. Moreover, 357 targets related to pyroptosis were found using GenenCards database, and Drug, disease and phenotypic targets were analyzed online using the Draw Venn Diagram website, and 12 cross targets were obtained. Through GO function and KEGG pathway enrichment analysis, 659 BP related items, 7 CC related items, 30 MF related items, and 70 signal pathways were screened out; Of these, eleven proteins screened from cross-target PPI network were subsequently docked with the SCU, and their expressions including caspase-1, IL-1β, IL-18, GSDMD and NLRP3 in RGC indicated by immunofluorescence, and the mRNA expression for caspase-1 in DR indicated by quantitative PCR, were successfully validated. SCU can effectively protect RGC pyroptosis in DR, and underlying mechanisms are involved in the inhibition of caspase-1, GSDMD, NLRP3, IL-1β and IL-18. Our findings therefore provide crucial evidence to support the clinic practice of SCU for the treatment of DR, and explained the underlying molecular network mechanism.
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Affiliation(s)
- Na Li
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
- Animal Center, Kunming Medical University, Kunming, 650500, China
| | - Xi-Liang Guo
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
| | - Min Xu
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
| | - Ji-Lin Chen
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
- Animal Center, Kunming Medical University, Kunming, 650500, China
| | - Yu-Fei Wang
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
| | - Yu-Gao Xiao
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China
| | - An-Shun Gao
- The First People's Hospital of Luquan Yi and Miao Autonomous County, Luquan, 651500, China
| | - Lan-Chun Zhang
- Animal Center, Kunming Medical University, Kunming, 650500, China.
| | - Xue-Zheng Liu
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China.
| | - Ting-Hua Wang
- Department of Anatomy, College of Basic Medicine, Jinzhou Medical University, Jinzhou, 121001, China.
- Animal Center, Kunming Medical University, Kunming, 650500, China.
- Institute of Neuroscience, Kunming Medical University, Kunming, 650500, China.
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13
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Zhou AY, Taylor BE, Barber KG, Lee CA, Taylor ZRR, Howell SJ, Taylor PR. Anti-IL17A Halts the Onset of Diabetic Retinopathy in Type I and II Diabetic Mice. Int J Mol Sci 2023; 24:ijms24021347. [PMID: 36674854 PMCID: PMC9860974 DOI: 10.3390/ijms24021347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/12/2023] Open
Abstract
There are ~463 million diabetics worldwide, and more than half have diabetic retinopathy. Yet, treatments are still lacking for non-proliferative diabetic retinopathy. We and others previously provided evidence that Interleukin-17A (IL-17A) plays a pivotal role in non-proliferative diabetic retinopathy. However, all murine studies used Type I diabetes models. Hence, it was the aim of this study to determine if IL-17A induces non-proliferative diabetic retinopathy in Type II diabetic mice, as identified for Type I diabetes. While examining the efficacy of anti-IL-17A as a potential therapeutic in a short-term Type I and a long-term Type II diabetes model; using different routes of administration of anti-IL-17A treatments. Retinal inflammation was significantly decreased (p < 0.05) after Type I-diabetic mice received 1 intravitreal injection, and Type II-diabetic mice received seven intraperitoneal injections of anti-IL-17A. Further, vascular tight junction protein Zonula Occludens-1 (ZO-1) was significantly decreased in both Type I and II diabetic mice, which was significantly increased when mice received anti-IL-17A injections (p < 0.05). Similarly, tight junction protein Occludin degradation was halted in Type II diabetic mice that received anti-IL-17A treatments. Finally, retinal capillary degeneration was halted 6 months after diabetes was confirmed in Type II-diabetic mice that received weekly intraperitoneal injections of anti-IL-17A. These findings provide evidence that IL-17A plays a pivotal role in non-proliferative diabetic retinopathy in Type II diabetic mice, and suggests that anti-IL-17A could be a good therapeutic candidate for non-proliferative diabetic retinopathy.
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Affiliation(s)
- Amy Y. Zhou
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Brooklyn E. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | | | - Chieh A. Lee
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Zakary R. R. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Scott J. Howell
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Patricia R. Taylor
- Department of Ophthalmology and Visual Science, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
- Correspondence:
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14
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Yang Y, Somani S. Impact of obstructive sleep apnea on the expression of inflammatory mediators in diabetic macular edema. Eur J Ophthalmol 2023; 33:415-420. [PMID: 35491659 PMCID: PMC9834325 DOI: 10.1177/11206721221099247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
PURPOSE To determine differences in inflammatory markers expressed in diabetic macular edema (DME) patients with and without obstructive sleep apnea (OSA). METHODS This was a prospective, cross-sectional study. Patients with treatment naive DME were enrolled in the study. They were stratified into 2 groups based on Apnea Hypopnea Index (AHI) from overnight polysomnography: OSA + (AHI ≥ 15) and OSA - (AHI<15). Multiplex immunoassay was performed for aqueous and serum cytokines including VEGF, placental growth factor (PGF), ICAM, IL2, IL3, IL6, IL8, IL10, IL17, vascular cell adhesion molecule-1 (VCAM1), monocyte attractant protein-1 (MCP1), epidermal growth factor (EGF) and platelet derived growth factor (PDGF). Statistical significance was defined as p < 0.004 using Bonferroni correction. RESULTS 32 DME positive patients were enrolled in the study; of which 17 patients were OSA + and 15 OSA-. The OSA + cohort had significantly higher levels of serum EGF (p = 0.003), and trended towards higher levels of most serum cytokines including ICAM and IL6. OSA- cohort had significantly higher levels of aqueous IL17 compared to the OSA + cohort (2.97 ± 1.7 vs. 1.4 ± 0.46 pg/mL, p = 0.004). There were no significant differences in other aqueous cytokines. CONCLUSIONS OSA + group trended towards higher levels of most serum inflammatory markers, suggesting a greater pro-inflammatory state. However, they did not have significantly greater level of aqueous cytokines.
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Affiliation(s)
- Yelin Yang
- Department of Ophthalmology and Visual Sciences, University of Toronto, Toronto, Ontario, Canada,Sohel Somani, Uptown Eye Specialists, 401-7900 Hurontario Street, Brampton, ON, L6Y 0P6.
| | - Sohel Somani
- Department of Ophthalmology and Visual Sciences, University of Toronto, Toronto, Ontario, Canada,Uptown Eye Specialists, Brampton, ON, Canada,William Osler Health Systems, Brampton, ON, Canada
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15
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Yue T, Shi Y, Luo S, Weng J, Wu Y, Zheng X. The role of inflammation in immune system of diabetic retinopathy: Molecular mechanisms, pathogenetic role and therapeutic implications. Front Immunol 2022; 13:1055087. [PMID: 36582230 PMCID: PMC9792618 DOI: 10.3389/fimmu.2022.1055087] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/25/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetic retinopathy is one of the most common complications of diabetes mellitus and the leading cause of low vision and blindness worldwide. Mounting evidence demonstrates that inflammation is a key mechanism driving diabetes-associated retinal disturbance, yet the pathophysiological process and molecular mechanisms of inflammation underlying diabetic retinopathy are not fully understood. Cytokines, chemokines, and adhesion molecules interact with each other to form a complex molecular network that propagates the inflammatory and pathological cascade of diabetic retinopathy. Therefore, it is important to understand and elucidate inflammation-related mechanisms behind diabetic retinopathy progression. Here, we review the current understanding of the pathology and pathogenesis of inflammation in diabetic retinopathy. In addition, we also summarize the relevant clinical trials to further suggest inflammation-targeted therapeutics for prevention and management of diabetic retinopathy.
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Affiliation(s)
- Tong Yue
- Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Yu Shi
- Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Sihui Luo
- Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Jianping Weng
- Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Yali Wu
- Department of Ophthalmology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China,*Correspondence: Yali Wu, ; Xueying Zheng,
| | - Xueying Zheng
- Department of Endocrinology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China,*Correspondence: Yali Wu, ; Xueying Zheng,
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16
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Yang S, Qi S, Wang C. The role of retinal Müller cells in diabetic retinopathy and related therapeutic advances. Front Cell Dev Biol 2022; 10:1047487. [PMID: 36531955 PMCID: PMC9757137 DOI: 10.3389/fcell.2022.1047487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 11/24/2022] [Indexed: 11/19/2023] Open
Abstract
Diabetic retinopathy (DR) is a significant complication of diabetes. During the pathogenesis of retinal microangiopathy and neuronopathy, activated retinal Müller cells (RMCs) undergo morphological and structural changes such as increased expression of glial fibrillary acidic protein, disturbance of potassium and water transport regulation, and onset of production of a large number of inflammatory and vascular growth factors as well as chemokines. Evidently, activated RMCs are necessary for the pathogenesis of DR; therefore, exploring the role of RMCs in DR may provide a new target for the treatment thereof. This article reviews the mechanism of RMCs involvement in DR and the progress in related treatments.
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Affiliation(s)
| | - Shounan Qi
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Chenguang Wang
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
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17
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Howell SJ, Lee CA, Zapadka TE, Lindstrom SI, Taylor BE, Taylor ZRR, Barber KG, Taylor PR. Inhibition of CD40-TRAF6-dependent inflammatory activity halts the onset of diabetic retinopathy in streptozotocin-diabetic mice. Nutr Diabetes 2022; 12:46. [PMID: 36309487 PMCID: PMC9617859 DOI: 10.1038/s41387-022-00225-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 10/11/2022] [Accepted: 10/20/2022] [Indexed: 01/11/2023] Open
Abstract
Diabetes initiates inflammation that can impair the retinal vasculature, and lead to diabetic retinopathy; one of the leading causes of blindness. Inflammatory pathways have been examined as potential therapeutic targets for diabetic retinopathy, but there is still a need for early-stage treatments. We hypothesized that the CD40-TNF Receptor Associated Factor 6 (TRAF6) axis plays a pivotal role in the onset of diabetic retinopathy, and that the CD40-TRAF6 axis would be a prime therapeutic target for early-stage non-proliferative diabetic retinopathy. The CD40-TRAF6 complex can initiate NFκB activation, inflammation, and tissue damage. Further, CD40 and TRAF6 are constitutively expressed on Muller glia, and upregulated in the diabetic retina. Yet the role of the CD40-TRAF6 complex in the onset of diabetic retinopathy is still unclear. In the current study, we examined the CD40-TRAF6 axis in diabetic retinopathy using a small molecule inhibitor (SMI-6877002) on streptozotocin-induced diabetic mice. When CD40-TRAF6-dependent inflammation was inhibited, retinal vascular leakage and capillary degeneration was ameliorated in diabetic mice. Collectively, these data suggest that the CD40-TRAF6 axis plays a pivotal role in the onset of diabetic retinopathy, and could be a novel therapeutic target for early diabetic retinopathy.
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Affiliation(s)
- Scott J. Howell
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA ,grid.410349.b0000 0004 5912 6484Louis Stokes Cleveland VA Medical Center, Cleveland, OH USA
| | - Chieh A. Lee
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA
| | - Thomas E. Zapadka
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA ,grid.410349.b0000 0004 5912 6484Louis Stokes Cleveland VA Medical Center, Cleveland, OH USA
| | - Sarah I. Lindstrom
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA
| | - Brooklyn E. Taylor
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA
| | - Zakary R. R. Taylor
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA
| | - Katherine G. Barber
- grid.410349.b0000 0004 5912 6484Louis Stokes Cleveland VA Medical Center, Cleveland, OH USA
| | - Patricia R. Taylor
- grid.67105.350000 0001 2164 3847Department of Ophthalmology and Visual Science Case Western Reserve University, School of Medicine, Cleveland, USA ,grid.410349.b0000 0004 5912 6484Louis Stokes Cleveland VA Medical Center, Cleveland, OH USA ,grid.67105.350000 0001 2164 3847Present Address: Department of Ophthalmology, Case Western Reserve University, Institute of Pathology, 2085 Adelbert Rd., Room 101, Cleveland, OH USA
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18
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DeMaio A, Mehrotra S, Sambamurti K, Husain S. The role of the adaptive immune system and T cell dysfunction in neurodegenerative diseases. J Neuroinflammation 2022; 19:251. [PMID: 36209107 PMCID: PMC9548183 DOI: 10.1186/s12974-022-02605-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 09/25/2022] [Indexed: 11/10/2022] Open
Abstract
The adaptive immune system and associated inflammation are vital in surveillance and host protection against internal and external threats, but can secondarily damage host tissues. The central nervous system is immune-privileged and largely protected from the circulating inflammatory pathways. However, T cell involvement and the disruption of the blood-brain barriers have been linked to several neurodegenerative diseases including Parkinson's disease, Alzheimer's disease, and multiple sclerosis. Under normal physiological conditions, regulatory T cells (Treg cells) dampen the inflammatory response of effector T cells. In the pathological states of many neurodegenerative disorders, the ability of Treg cells to mitigate inflammation is reduced, and a pro-inflammatory environment persists. This perspective review provides current knowledge on the roles of T cell subsets (e.g., effector T cells, Treg cells) in neurodegenerative and ocular diseases, including uveitis, diabetic retinopathy, age-related macular degeneration, and glaucoma. Many neurodegenerative and ocular diseases have been linked to immune dysregulation, but the cellular events and molecular mechanisms involved in such processes remain largely unknown. Moreover, the role of T cells in ocular pathologies remains poorly defined and limited literature is available in this area of research. Adoptive transfer of Treg cells appears to be a vital immunological approach to control ocular pathologies. Similarities in T cell dysfunction seen among non-ocular neurodegenerative diseases suggest that this area of research has a great potential to develop better therapeutic agents for ocular diseases and warrants further studies. Overall, this perspective review article provides significant information on the roles of T cells in numerous ocular and non-ocular neurodegenerative diseases.
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Affiliation(s)
- Alexa DeMaio
- Department of Ophthalmology, Storm Eye Institute, Room 713, Medical University of South Carolina, 167 Ashley Ave, SC, 29425, Charleston, USA
| | - Shikhar Mehrotra
- Department of Surgery, Hollings Cancer Center, Medical University of South Carolina, SC, 29425, Charleston, USA
| | - Kumar Sambamurti
- Department of Neuroscience, Medical University of South Carolina, SC, 29425, Charleston, USA
| | - Shahid Husain
- Department of Ophthalmology, Storm Eye Institute, Room 713, Medical University of South Carolina, 167 Ashley Ave, SC, 29425, Charleston, USA.
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19
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Wang Y, Yu H, Li J, Liu W, Yu S, Lv P, Zhao L, Wang X, Zuo Z, Liu X. Th22 cells induce Müller cell activation via the Act1/TRAF6 pathway in diabetic retinopathy. Cell Tissue Res 2022; 390:367-383. [PMID: 36201050 DOI: 10.1007/s00441-022-03689-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 09/14/2022] [Indexed: 11/02/2022]
Abstract
T helper 22 (Th22) cells have been implicated in diabetic retinopathy (DR), but it remains unclear whether Th22 cells involve in the pathogenesis of DR. To investigate the role of Th22 cells in DR mice, the animal models were established by intraperitoneal injection of STZ and confirmed by fundus fluorescein angiography and retinal haematoxylin-eosin staining. IL-22BP was administered by intravitreal injection. IL-22 level was measured by ELISA in vivo and in vitro. The expression of IL-22Rα1 in the retina was assessed by immunofluorescence. We assessed GFAP, VEGF, ICAM-1, inflammatory-associated factors and the integrity of blood-retinal barrier in control, DR, IL-22BP, and sham group. Müller cells were co-cultured with Th22 cells, and the expression of the above proteins was measured by immunoblotting. Plasmid transfection technique was used to silence Act1 gene in Müller cells. Results in vivo and in vitro indicated that Th22 cells infiltrated into the DR retinal and IL-22Rα1 expressed in Müller cells. Th22 cells promoted Müller cells activation and inflammatory factor secretion by secreting IL-22 compared with high-glucose stimulation alone. In addition, IL-22BP ameliorated the pathological alterations of the retina in DR. Inhibition of the inflammatory signalling cascade through Act1 knockdown alleviated DR-like pathology. All in all, the results suggested that Th22 cells infiltrated into the retina and secreted IL-22 in DR, and then IL-22 binding with IL-22Rα1 activated the Act1/TRAF6 signal pathway, and promoted the inflammatory of Müller cells and involved the pathogenesis of DR.
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Affiliation(s)
- Yufei Wang
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Hongdan Yu
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Jing Li
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China
| | - Wenqiang Liu
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Shengxue Yu
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Pan Lv
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Lipan Zhao
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Xiaobai Wang
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China.,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China
| | - Zhongfu Zuo
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China. .,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China. .,Department of Anatomy, Histology and Embryology, Postdoctoral Research Station, Guangxi Medical University, Nanning, China.
| | - Xuezheng Liu
- Liaoning Key Laboratory of Diabetic Cognitive and Perceptive Dysfunction, Jinzhou Medical University, Jinzhou, China. .,Department of Anatomy, Histology and Embryology, Jinzhou Medical University, Jinzhou, China.
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20
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Wu J, Hu J, Zhang F, Jin Q, Sun X. High glucose promotes IL-17A-induced gene expression through histone acetylation in retinal pigment epithelium cells. Int Immunopharmacol 2022; 110:108893. [DOI: 10.1016/j.intimp.2022.108893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/13/2022] [Accepted: 05/23/2022] [Indexed: 11/05/2022]
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21
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Zhan M, Wen L, Zhu M, Gong J, Xi C, Wen H, Xu G, Shen H. Integrative Analysis of Transcriptome and Metabolome Reveals Molecular Responses in Eriocheir sinensis with Hepatopancreatic Necrosis Disease. BIOLOGY 2022; 11:1267. [PMID: 36138745 PMCID: PMC9495758 DOI: 10.3390/biology11091267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
Hepatopancreatic necrosis disease (HPND) is a highly lethal disease that first emerged in 2015 in Jiangsu Province, China. So far, most researchers believe that this disease is caused by abiotic factors. However, its true pathogenic mechanism remains unknown. In this study, the effects of HPND on the metabolism and other biological indicators of the Chinese mitten crab (Eriocheir sinensis) were evaluated by integrating transcriptomics and metabolomics. Our findings demonstrate that the innate immunity, antioxidant activity, detoxification ability, and nervous system of the diseased crabs were affected. Additionally, metabolic pathways such as lipid metabolism, nucleotide metabolism, and protein metabolism were dysregulated, and energy production was slightly increased. Moreover, the IL-17 signaling pathway was activated and high levels of autophagy and apoptosis occurred in diseased crabs, which may be related to hepatopancreas damage. The abnormal mitochondrial function and possible anaerobic metabolism observed in our study suggested that functional hypoxia may be involved in HPND progression. Furthermore, the activities of carboxylesterase and acetylcholinesterase were significantly inhibited, indicating that the diseased crabs were likely stressed by pesticides such as pyrethroids. Collectively, our findings provide new insights into the molecular mechanisms altered in diseased crabs, as well as the etiology and pathogenic mechanisms of HPND.
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Affiliation(s)
- Ming Zhan
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Lujie Wen
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Mengru Zhu
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Jie Gong
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Changjun Xi
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Haibo Wen
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Gangchun Xu
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Huaishun Shen
- Wuxi Fisheries College, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
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22
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Zhu M, Gao S, Gao S, Wang Y, Li N, Shen X. Interleukin-17A attenuates photoreceptor cell apoptosis in streptozotocin-induced diabetic mouse model. Bioengineered 2022; 13:14175-14187. [PMID: 35730427 PMCID: PMC9342149 DOI: 10.1080/21655979.2022.2084241] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Diabetic retinopathy (DR) represents an important microvascular complication of diabetes, which is the top etiology of vision impairment worldwide. Although interleukin (IL)-17A is increasingly implicated in DR development, the underlying cellular mechanisms remain poorly defined. This work aims to evaluate IL-17A levels in the retina of streptozotocin (STZ)-induced diabetic mice and elucidate their potential roles. We found IL-17A was upregulated in diabetic retina after intraperitoneal injection of STZ and high-glucose (HG)-cultured primary Müller cells. IL-17A knockout (IL-17A−/−) downregulated glial fibrillary acidic protein (GFAP) and inhibited the conversion of proneurotrophin-3 (proNT-3) to mature NT-3 in retinal specimens from diabetic mice as well as in Müller cells cultured under HG conditions. Induced apoptosis and upregulated Bax and cleaved caspase-3 were observed in retinal specimens from IL-17A−/− diabetic mice and photoreceptor (661 W) cells after co-culture with IL-17A−/− Müller cells. Moreover, RNA interference-induced gene silencing of tyrosine kinase C receptor (TrkC) in 661 W cells reversed the anti-apoptotic effect of IL-17A under HG conditions. Taken together, our findings suggest that IL-17A/NT-3/TrkC axis regulation suppresses apoptosis in photoreceptor cells, providing a new treatment strategy for DR.
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Affiliation(s)
- Minqi Zhu
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shuang Gao
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Sha Gao
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yanuo Wang
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Na Li
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xi Shen
- Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
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23
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Chen Y, Xia Q, Zeng Y, Zhang Y, Zhang M. Regulations of Retinal Inflammation: Focusing on Müller Glia. Front Cell Dev Biol 2022; 10:898652. [PMID: 35573676 PMCID: PMC9091449 DOI: 10.3389/fcell.2022.898652] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/11/2022] [Indexed: 12/12/2022] Open
Abstract
Retinal inflammation underlies multiple prevalent retinal diseases. While microglia are one of the most studied cell types regarding retinal inflammation, growing evidence shows that Müller glia play critical roles in the regulation of retinal inflammation. Müller glia express various receptors for cytokines and release cytokines to regulate inflammation. Müller glia are part of the blood-retinal barrier and interact with microglia in the inflammatory responses. The unique metabolic features of Müller glia in the retina makes them vital for retinal homeostasis maintenance, regulating retinal inflammation by lipid metabolism, purine metabolism, iron metabolism, trophic factors, and antioxidants. miRNAs in Müller glia regulate inflammatory responses via different mechanisms and potentially regulate retinal regeneration. Novel therapies are explored targeting Müller glia for inflammatory retinal diseases treatment. Here we review new findings regarding the roles of Müller glia in retinal inflammation and discuss the related novel therapies for retinal diseases.
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Affiliation(s)
- Yingying Chen
- Department of Ophthalmology, Sichuan University West China Hospital, Sichuan University, Chengdu, China
- Research Laboratory of Macular Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Qinghong Xia
- Operating Room of Anesthesia Surgery Center, West China Hospital, Sichuan University, Chengdu, China
- West China School of Nursing, Sichuan University, Chengdu, China
| | - Yue Zeng
- Department of Ophthalmology, Sichuan University West China Hospital, Sichuan University, Chengdu, China
- Research Laboratory of Macular Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Yun Zhang
- Department of Ophthalmology, Sichuan University West China Hospital, Sichuan University, Chengdu, China
- Research Laboratory of Macular Disease, West China Hospital, Sichuan University, Chengdu, China
| | - Meixia Zhang
- Department of Ophthalmology, Sichuan University West China Hospital, Sichuan University, Chengdu, China
- Research Laboratory of Macular Disease, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Meixia Zhang,
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24
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Zhong H, Sun X. Contribution of Interleukin-17A to Retinal Degenerative Diseases. Front Immunol 2022; 13:847937. [PMID: 35392087 PMCID: PMC8980477 DOI: 10.3389/fimmu.2022.847937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 02/25/2022] [Indexed: 12/26/2022] Open
Abstract
Retinal degenerative diseases are a leading cause of vision loss and blindness throughout the world, characterized by chronic and progressive loss of neurons and/or myelin. One of the common features of retinal degenerative diseases and central neurodegenerative diseases is chronic neuroinflammation. Interleukin-17A (IL-17A) is the cytokine most closely related to disease in its family. Accumulating evidence suggests that IL-17A plays a key role in human retinal degenerative diseases, including age-related macular degeneration, diabetic retinopathy and glaucoma. This review aims to provide an overview of the role of IL-17A participating in the pathogenesis of retinal degenerative diseases, which may open new avenues for potential therapeutic interventions.
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Affiliation(s)
- Huimin Zhong
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Eye Diseases, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, China.,Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
| | - Xiaodong Sun
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Eye Diseases, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China.,Shanghai Engineering Center for Visual Science and Photomedicine, Shanghai, China.,Shanghai Engineering Center for Precise Diagnosis and Treatment of Eye Diseases, Shanghai, China
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25
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Sun H, Zou W, Zhang Z, Huang D, Zhao J, Qin B, Xie P, Mugisha A, Liu Q, Hu Z. Vitreous Inflammatory Cytokines and Chemokines, Not Altered After Preoperative Adjunctive Conbercept Injection, but Associated With Early Postoperative Macular Edema in Patients With Proliferative Diabetic Retinopathy. Front Physiol 2022; 13:846003. [PMID: 35309074 PMCID: PMC8928061 DOI: 10.3389/fphys.2022.846003] [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: 12/30/2021] [Accepted: 02/15/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose To investigate the influence of preoperative adjunctive anti-VEGF drug (Conbercept) on vitreous inflammatory cytokines and chemokines profiles and whether those cytokines were associated with early macular edema (ME) after surgery for patients with proliferative diabetic retinopathy (PDR). Methods In this post hoc analysis of the CONCEPT clinical trial, subjects with PDR underwent vitrectomy were included and vitreous samples were collected at the start of vitrectomy. Levels of vitreous VEGF, 17 inflammatory cytokines, and 11 chemokines were measured using Luminex multiplex technology. Subjects were then divided into groups based on with (Pre-IV) or without (No-Pre-IV) preoperative intravitreous injection of Conbercept; with or without early ME after surgery. Results There was no difference between Pre-IV (13/30) and No-Pre-IV (7/29) concerning the ratio of patients with early ME (p = 0.17). After preoperative intravitreous injection of Conbercept, VEGF level dramatically decreased (p = 0.001), TNF-α (p = 0.002), and IP-10 (p = 0.018) increased in Pre-IV group. In patients with early ME after surgery, however, a number of cytokines increased, including IL-1β (p = 0.008), IL-2 (p = 0.023), IL-4 (p = 0.030), IL-9 (p = 0.02), IL-10 (p = 0.002), IL-12 (p = 0.001), IL-13 (p = 0.031), IL-17A (p = 0.008), TNF-α (p = 0.012), CXCL9 (p = 0.023), G-CSF (p = 0.019), MCP-1 (p = 0.048), and RANTES (p = 0.016). Conclusion We found the preoperative adjunctive Conbercept injection has limited influence on the levels of vitreous inflammatory cytokines and chemokines in PDR. The elevated levels of a series of cytokines might be associated with early inflammation after vitrectomy, which may lead to postoperative ME.
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Affiliation(s)
- Hongyan Sun
- The Affiliated Suqian First People’s Hospital of Nanjing Medical University, Suqian, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenjun Zou
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Ophthalmology, The Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi, China
| | - Zhengyu Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Darui Huang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Ophthalmology, The Affiliated Huaian No. 1 People’s Hospital of Nanjing Medical University, Huaian, China
| | - Jinxiang Zhao
- The Affiliated Suqian First People’s Hospital of Nanjing Medical University, Suqian, China
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bing Qin
- The Affiliated Suqian First People’s Hospital of Nanjing Medical University, Suqian, China
| | - Ping Xie
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Aime Mugisha
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qinghuai Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Qinghuai Liu,
| | - Zizhong Hu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Zizhong Hu,
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26
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Qiu AW, Huang DR, Li B, Fang Y, Zhang WW, Liu QH. IL-17A injury to retinal ganglion cells is mediated by retinal Müller cells in diabetic retinopathy. Cell Death Dis 2021; 12:1057. [PMID: 34750361 PMCID: PMC8575984 DOI: 10.1038/s41419-021-04350-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/07/2021] [Accepted: 10/19/2021] [Indexed: 01/13/2023]
Abstract
Diabetic retinopathy (DR), the most common and serious ocular complication, recently has been perceived as a neurovascular inflammatory disease. However, role of adaptive immune inflammation driven by T lymphocytes in DR is not yet well elucidated. Therefore, this study aimed to clarify the role of interleukin (IL)-17A, a proinflammatory cytokine mainly produced by T lymphocytes, in retinal pathophysiology particularly in retinal neuronal death during DR process. Ins2Akita (Akita) diabetic mice 12 weeks after the onset of diabetes were used as a DR model. IL-17A-deficient diabetic mice were obtained by hybridization of IL-17A-knockout (IL-17A-KO) mouse with Akita mouse. Primarily cultured retinal Müller cells (RMCs) and retinal ganglion cells (RGCs) were treated with IL-17A in high-glucose (HG) condition. A transwell coculture of RGCs and RMCs whose IL-17 receptor A (IL-17RA) gene had been silenced with IL-17RA-shRNA was exposed to IL-17A in HG condition and the cocultured RGCs were assessed on their survival. Diabetic mice manifested increased retinal microvascular lesions, RMC activation and dysfunction, as well as RGC apoptosis. IL-17A-KO diabetic mice showed reduced retinal microvascular impairments, RMC abnormalities, and RGC apoptosis compared with diabetic mice. RMCs expressed IL-17RA. IL-17A exacerbated HG-induced RMC activation and dysfunction in vitro and silencing IL-17RA gene in RMCs abolished the IL-17A deleterious effects. In contrast, RGCs did not express IL-17RA and IL-17A did not further alter HG-induced RGC death. Notably, IL-17A aggravated HG-induced RGC death in the presence of intact RMCs but not in the presence of RMCs in which IL-17RA gene had been knocked down. These findings establish that IL-17A is actively involved in DR pathophysiology and particularly by RMC mediation it promotes RGC death. Collectively, we propose that antagonizing IL-17RA on RMCs may prevent retinal neuronal death and thereby slow down DR progression.
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Affiliation(s)
- Ao-Wang Qiu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China
| | - Da-Rui Huang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China
| | - Bin Li
- Women & Children Central Laboratory, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China
| | - Yuan Fang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China
| | - Wei-Wei Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China.
| | - Qing-Huai Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China.
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27
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Zhou T, Liu Y, Yang Z, Ni B, Zhu X, Huang Z, Xu H, Feng Q, Lin X, He C, Liu X. IL-17 signaling induces iNOS+ microglia activation in retinal vascular diseases. Glia 2021; 69:2644-2657. [PMID: 34288126 DOI: 10.1002/glia.24063] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 12/18/2022]
Abstract
Activation of microglia and inflammation-mediated vascular damages are suggested to play a decisive role in the pathogenesis of various retinopathies. The inducible nitric oxide synthase (iNOS) was required for activated microglia-mediated injuries. However, the induction mechanism of microglia activation during retinal vascular diseases is still elusive. Here we showed that IL-17 induced microglia activation with high expression of iNOS and promoted the development of retinal vascular diseases. IL-17-dependent activation of the STAT3-iNOS pathway was essentially required for microglia activation, which promoted endothelial cell growth and accelerated vascular leakage and leukostasis via IL-6 in vitro and in vivo. Taken together, our data provide novel mechanistic insights on microglia activation-mediated retinopathy, unveil the specific role of IL-17 on microglia, and define novel therapeutic targets for treating retinal vascular diseases.
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Affiliation(s)
- Tian Zhou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Yan Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Ziqi Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Biyan Ni
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Xiaowei Zhu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Zijing Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Huiyi Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Qiumin Feng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Xiaojing Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Chang He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Xialin Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
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PPP1CA/YAP/GS/Gln/mTORC1 pathway activates retinal Müller cells during diabetic retinopathy. Exp Eye Res 2021; 210:108703. [PMID: 34280391 DOI: 10.1016/j.exer.2021.108703] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/15/2021] [Accepted: 07/15/2021] [Indexed: 01/04/2023]
Abstract
Diabetic retinopathy (DR) is a vision-loss complication caused by diabetes with high prevalence. During DR, the retinal microvascular injury and neurodegeneration derived from chronic hyperglycemia have attracted global attention to retinal Müller cells (RMCs), the major macroglia in the retina contributes to neuroprotection. Protein Phosphatase 1 Catalytic Subunit Alpha (PPP1CA) dephosphorylates the transcriptional coactivator Yes-associated protein (YAP) to promote the transcription of glutamine synthetase (GS). GS catalyzes the transformation of neurotoxic glutamate (Glu) into nontoxic glutamine (Gln) to activate the mammalian target of rapamycin complex 1 (mTORC1), which promotes the activation of RMCs. In this study, in vitro MIO-M1 cell and in vivo mouse high-fat diet and streptozotocin (STZ)-induced diabetic model to explore the role of the PPP1CA/YAP/GS/Gln/mTORC1 pathway on the activation of MRCs during DR. Results showed that PPP1CA promoted the dephosphorylation and nuclear translocation of YAP in high glucose (HG)-exposed MIO-M1 cells. YAP transcribed GS in HG-exposed MIO-M1 cells in a TEAD1-dependent and PPP1CA-dependent way. GS promoted the biosynthesis of Gln in HG-exposed MIO-M1 cells. Gln activated mTORC1 instead of mTORC2 in HG-exposed MIO-M1 cells. The proliferation and activation of HG-exposed MIO-M1 cells were PPP1CA/YAP/GS/Gln/mTORC1-dependent. Finally, RMC proliferation and activation during DR were inhibited by the PPP1CA/YAP/GS/Gln/mTORC1 blockade. The findings supplied a potential idea to protect RMCs and alleviate the development of DR.
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29
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Byrne EM, Llorián-Salvador M, Tang M, Margariti A, Chen M, Xu H. IL-17A Damages the Blood-Retinal Barrier through Activating the Janus Kinase 1 Pathway. Biomedicines 2021; 9:831. [PMID: 34356895 PMCID: PMC8301352 DOI: 10.3390/biomedicines9070831] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/06/2021] [Accepted: 07/14/2021] [Indexed: 12/16/2022] Open
Abstract
Blood-retinal barrier (BRB) dysfunction underlies macular oedema in many sight-threatening conditions, including diabetic macular oedema, neovascular age-related macular degeneration and uveoretinitis. Inflammation plays an important role in BRB dysfunction. This study aimed to understand the role of the inflammatory cytokine IL-17A in BRB dysfunction and the mechanism involved. Human retinal pigment epithelial (RPE) cell line ARPE19 and murine brain endothelial line bEnd.3 were cultured on transwell membranes to model the outer BRB and inner BRB, respectively. IL-17A treatment (3 days in bEnd.3 cells and 6 days in ARPE19 cells) disrupted the distribution of claudin-5 in bEnd.3 cells and ZO-1 in ARPE19 cells, reduced the transepithelial/transendothelial electrical resistance (TEER) and increased permeability to FITC-tracers in vitro. Intravitreal (20 ng/1 μL/eye) or intravenous (20 ng/g) injection of recombinant IL-17A induced retinal albumin leakage within 48 h in C57BL/6J mice. Mechanistically, IL-17A induced Janus kinase 1 (JAK1) phosphorylation in bEnd.3 but not ARPE19 cells. Blocking JAK1 with Tofacitinib prevented IL-17A-mediated claudin-5 dysmorphia in bEnd.3 cells and reduced albumin leakage in IL-17A-treated mice. Our results suggest that IL-17A can damage the BRB through the activating the JAK1 signaling pathway, and targeting this pathway may be a novel approach to treat inflammation-induced macular oedema.
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Affiliation(s)
| | | | | | | | | | - Heping Xu
- The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast BT9 7BL, UK; (E.M.B.); (M.L.-S.); (M.T.); (A.M.); (M.C.)
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30
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Quevedo-Martínez JU, Garfias Y, Jimenez J, Garcia O, Venegas D, Bautista de Lucio VM. Pro-inflammatory cytokine profile is present in the serum of Mexican patients with different stages of diabetic retinopathy secondary to type 2 diabetes. BMJ Open Ophthalmol 2021; 6:e000717. [PMID: 34263060 PMCID: PMC8246380 DOI: 10.1136/bmjophth-2021-000717] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/22/2021] [Indexed: 12/29/2022] Open
Abstract
Aim It’s been reported that pro-inflammatory cytokines are elevated in patients with diabetic retinopathy (DR); this may contribute to the pathophysiology of the disease. The aim of this study is to measure the concentration of various inflammatory cytokines from the main CD4+ T helper inflammatory responses in blood serum from Mexican patients with DR in different stages using cytometric bead array (CBA) technology and correlate them with the presence and severity of DR in order to find possible DR biomarkers that serve as diagnostic or therapeutic predictors. Methods 64 subjects were included in the study, 16 in the control group, 16 in the type 2 diabetes mellitus no DR (NDR) group, 16 in the non-proliferative DR (NPDR) group and 16 in the proliferative DR (PDR) group. Cytokine concentrations of interleukin (IL) 1ß, IL‐2, IL‐4, IL‐6, IL‐8, IL‐10, IL‐12, IL‐17A, tumour necrosis factor alpha (TNFα) and interferon-gamma in serum samples were measured using Human Inflammatory and TH1/TH2/TH17 CBA Kit. Results IL-6, IL-12, IL-17a and TNFα were significantly higher in the patients with DR compared with the control group. The PDR group showed a slightly lower concentration of serum cytokines IL-6, IL-12 and IL-17a. TNFα showed a higher concentration compared with healthy controls, NDR and NPDR subjects. We also found a positive statistical correlation between the presence and severity of DR with the clinical parameters haemoglobin A1c, body mass index and serum creatinine and the concentration of serum cytokines IL-6 and TNFα. Conclusion Our findings suggest that patients with diabetes and DR have a stronger chronic inflammatory profile compared with non-diabetic subjects.
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Affiliation(s)
| | - Yonathan Garfias
- Unidad de Investigación, Instituto de Oftalmologia Fundacion Conde de Valenciana IAP, Mexico City, Mexico.,Department of Biochemistry, Faculty of Medicine, UNAM. Av. Universidad 3000, 04510. Ciudad Universitaria, Mexico City, Mexico
| | - Joanna Jimenez
- Affective Disorders, Instituto Nacional de Psiquiatria Ramon de la Fuente Muniz Centro de Documentacion e Informacion en Psiquiatria y Salud Mental, Ciudad de Mexico, Mexico
| | - Osvaldo Garcia
- Econometrics and Operation Research, Universidad Autonoma de Tamaulipas, Victoria, Mexico
| | - Diana Venegas
- Research Unit, Microbiology and Ocular Proteomics Department, Instituto de Oftalmologia Fundacion Conde de Valenciana IAP, Mexico City, Mexico
| | - Victor Manuel Bautista de Lucio
- Research Unit, Microbiology and Ocular Proteomics Department, Instituto de Oftalmologia Fundacion Conde de Valenciana IAP, Mexico City, Mexico
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Hu H, Liu J, Wang D, Qiu S, Yuan Y, Wang F, Wen L, Song Q, Sun ZL. Efficacy of calcium dobesilate in treating Chinese patients with mild-to-moderate non-proliferative diabetic retinopathy (CALM-DR): protocol for a single-blind, multicentre, 24-armed cluster-randomised, controlled trial. BMJ Open 2021; 11:e045256. [PMID: 34049911 PMCID: PMC8166613 DOI: 10.1136/bmjopen-2020-045256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
INTRODUCTION Calcium dobesilate (CaD) has been used in the treatment of diabetic retinopathy (DR) due to its potential in protecting against retinal vascular damage. However, there is limited evidence exploring its efficacy in combating DR progression. This study is aimed at evaluating whether CaD could prevent DR progression into an advanced stage among Chinese patients with mild-to-moderate non-proliferative DR (NPDR). METHODS AND ANALYSIS This study is a single-blind, multicentre, cluster-randomised, controlled superiority trial. A total of 1272 patients with mild-to-moderate NPDR will be enrolled and randomly assigned at a 1:1 ratio into the control group (conventional treatment group) and the intervention group (conventional treatment plus CaD (500 mg three times per day) for 12 months). Patients will be followed at 1, 3, 6 and 12 months after randomisation and receiving treatments, with the severity of DR assessed by the Early Treatment Diabetic Retinopathy Study (ETDRS) scale. The primary endpoint is the progression of DR during follow-up, which is defined as an increase of two or more steps in the ETDRS scale. The secondary endpoints include the concomitant changes in visual acuity, presence, number, location and type of retinal lesions, and retinal blood vessel diameter as well as the arteriovenous ratio at different visits. ETHICS AND DISSEMINATION Each local ethics committee (first Vote: Ethical Review Committees of Zhongda Hospital of Southeast University (2019ZDSYLL132-P01)) has approved the study. The results will be published in high impact peer-reviewed scientific journals aimed at the general reader. TRIAL REGISTRATION NUMBERS NCT04283162.
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Affiliation(s)
- Hao Hu
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Jiang Liu
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Duolao Wang
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Shanhu Qiu
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Yang Yuan
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Fenghua Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University and Beijing Ophthalmology and Visual Science Key Lab, Beijing, China
| | - Liang Wen
- Department of Ophthalmology, Fushun Eye Hospital, Fushun, China
| | - Qi Song
- Jiangsu Wanbang Biochemical Pharmaceutical Group Co., Ltd, Xuzhou, China
| | - Zi-Lin Sun
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, Jiangsu, China
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Wang Y, Gao S, Gao S, Li N, Xie B, Shen X. Blocking the interaction between interleukin-17A and endoplasmic reticulum stress in macrophage attenuates retinal neovascularization in oxygen-induced retinopathy. Cell Biosci 2021; 11:82. [PMID: 33933165 PMCID: PMC8088655 DOI: 10.1186/s13578-021-00593-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 04/24/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Neovascularization is a leading cause of visual loss typically associated with diabetic retinopathy (DR) and retinopathy of prematurity (ROP). Interleukin-17A (IL-17A) and endoplasmic reticulum (ER) stress both have been demonstrated to play a proangiogenic role in ischemic retinopathies. However, the relationship between IL-17A and ER stress in retinal neovascularization (RNV) under hypoxic conditions and its underlying mechanisms remain unclear. METHODS In this study, oxygen-induced retinopathy (OIR) mice model was established and intravitreal injections were conducted. Changes of IL-17A and ER stress markers in retinas and cultured primary bone marrow derived macrophage (BMDM) under normoxic or hypoxic conditions were detected. Western blotting, Real-Time RT-PCR, Immunofluorescence assays were conducted to explore the roles and relationship of IL-17A and ER stress in RNV, as well as its underlying mechanisms. RESULTS Compared to that in normal controls, IL-17A and ER stress markers were all remarkably increased under hypoxic conditions both in vivo and in vitro. Neutralization or knock out of IL-17A decreased ER stress. ER stress inhibitor 4-phenylbutyrate (4-PBA), attenuated the production of IL-17A, suggesting a positive feedback loop between IL-17A and ER stress. Inhibition of IL-17A or ER stress decreased areas of nonperfusion and neovascularization in OIR retinas. As TXNIP/NLRP3 pathway activation has been demonstrated to be involved in increased retinal vascular permeability of ischemic retinopathy, we observed that TXNIP/NLRP3 pathway mediated in the interaction between IL-17A and ER stress under hypoxic conditions. CONCLUSION The interplay between IL-17A and ER stress contributes to RNV in macrophages via modulation of TXNIP/NLRP3 signaling pathway under hypoxic conditions. The feedback loops may become an innovative and multiple pharmacological therapeutic target for ischemic retinopathy.
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Affiliation(s)
- Ya'nuo Wang
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - Shuang Gao
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - Sha Gao
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - Na Li
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - Bing Xie
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China.
| | - Xi Shen
- Department of Ophthalmology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China.
- Department of Ophthalmology, Ruijin Hospital, Lu Wan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Zapadka TE, Lindstrom SI, Batoki JC, Lee CA, Taylor BE, Howell SJ, Taylor PR. Aryl Hydrocarbon Receptor Agonist VAF347 Impedes Retinal Pathogenesis in Diabetic Mice. Int J Mol Sci 2021; 22:4335. [PMID: 33919327 PMCID: PMC8122442 DOI: 10.3390/ijms22094335] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022] Open
Abstract
Diabetic retinopathy is the leading cause of blindness in the working-age population worldwide. Although the cause of diabetic retinopathy is multifactorial, IL-17A is a prevalent inflammatory cytokine involved in the promotion of diabetes-mediated retinal inflammation and the progression of diabetic retinopathy. The primary source of IL-17A is Th17 cells, which are T helper cells that have been differentiated by dendritic cells in a proinflammatory cytokine environment. Aryl hydrocarbon receptor (AhR) is a ligand-dependent transcription factor that can manipulate dendritic cell maturation, halt the production of IL-6 (a proinflammatory cytokine), and suppress Th17 cell differentiation. In the current study, we examined the efficacy of an AhR agonist, VAF347, as a potential therapeutic for the onset of non-proliferative diabetic retinopathy in streptozotocin (STZ)-induced diabetic C57BL/6 mice. We determined that diabetes-mediated leukostasis, oxidative stress, and inflammation in the retina of STZ-diabetic mice were all significantly lower when treated with the AhR agonist VAF347. Furthermore, when VAF347 was subcutaneously injected into STZ-diabetic mice, retinal capillary degeneration was ameliorated, which is the hallmark of non-proliferative diabetic retinopathy in this diabetes murine model. Collectively, these findings provide evidence that the AhR agonist VAF347 could be a potentially novel therapeutic for non-proliferative diabetic retinopathy.
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Affiliation(s)
- Thomas E. Zapadka
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Sarah I. Lindstrom
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
| | - Julia C. Batoki
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
| | - Chieh A. Lee
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
| | - Brooklyn E. Taylor
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
| | - Scott J. Howell
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Patricia R. Taylor
- Department of Ophthalmology and Visual Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (J.C.B.); (C.A.L.); (B.E.T.); (S.J.H.)
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
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Xue J, Liu Y, Zhang S, Ding L, Shen B, Shao Y, Wei Z. CGRP protects bladder smooth muscle cells stimulated by high glucose through inhibiting p38 MAPK pathway in vitro. Sci Rep 2021; 11:7643. [PMID: 33828162 PMCID: PMC8027675 DOI: 10.1038/s41598-021-87140-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 03/24/2021] [Indexed: 11/09/2022] Open
Abstract
This study aimed to explore the effect of calcitonin gene-related peptide (CGRP) on bladder smooth muscle cells (BSMCs) under high glucose (HG) treatment in vitro. BSMCs from Sprague-Dawley rat bladders were cultured and passaged in vitro. The third-generation cells were cultured and divided into control group, HG group, HG + CGRP group, HG + CGRP + asiatic acid (AA, p-p38 activator) group, CGRP group, AA group, HG + CGRP + CGRP-8-37 (CGRP receptor antagonist) group and HG + LY2228820 (p38 MAPK inhibitor) group. The cell viability, apoptosis, malondialdehyde (MDA) and superoxide dismutase (SOD) levels of BSMCs were observed by the relevant detection kits. The expressions of α-SM-actin, p38 and p-p38 were detected by qRT-PCR or Western blot analysis. Compared with the control group, the cell viability, SOD and α-SM-actin levels of BSMCs were decreased and apoptotic cells, MDA and p-p38 levels were increased after HG treatment, while these changes could be partly reversed when BSMCs were treated with HG and CGRP or LY2228820 together. Moreover, AA or CGRP-8-37 could suppress the effect of CGRP on BSMCs under HG condition. Our data indicate that CGRP protects BSMCs from oxidative stress induced by HG in vitro, and inhibit the α-SM-actin expression decrease through inhibiting the intracellular p38 MAPK signaling pathway.
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Affiliation(s)
- Jun Xue
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China
| | - Yadong Liu
- Department of Urology, The Third People's Hospital of Yancheng, Yancheng, 224001, Jiangsu, China
| | - Sichong Zhang
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China
| | - Liucheng Ding
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China
| | - Baixin Shen
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China
| | - Yunpeng Shao
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China
| | - Zhongqing Wei
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, 121 Jiangjiayuan Road, Nanjing, 210011, Jiangsu, China.
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Zhao Y, Xiong Z, Chen Y, Wang G, Zhao Y. Activation of Insulin-Like Growth Factor-2 Ameliorates Retinal Cell Damage and Exerts Protection in in vitro Model of Diabetic Retinopathy. Neuroimmunomodulation 2021; 28:266-275. [PMID: 33951651 DOI: 10.1159/000515662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/02/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The major event in the development of diabetes-related blindness and vision impairment is the onset of retinal cell damage. Overall awareness of insulin-like growth factor-2 (IGF2) mechanisms emphasizes its protective behavior in retinal cells that help to provide new information about the development of treatment for retinal complications. OBJECTIVES This study analyzes the effect of in vitro changes associated with the cell survival and rescue mechanism in IGF2 inhibition and activation using chromeceptin and IGF2 peptides in ARPE-19 cells cultured in high glucose conditions. METHOD Cell death was induced using high glucose (15 mmol/L), IGF2 inhibition was done using chromeceptin (1 µM) (Sigma Aldrich, Saint Louis, MO, USA), and IGF2 activation was done using IGF2 peptide (10 ng/mL). The cells were analyzed for changes in cell proliferation, apoptosis markers, antioxidant molecules, and alteration of cytokines. RESULTS The study demonstrated that cells lacking IGF2 exhibited a significant increase in reactive oxygen levels with apoptosis patterns. Also, gene expression analysis by qRT-PCR demonstrated a significant increase in Yes-associated protein 1, CDK2, TNF-α, and BIRC5 genes in cells under high glucose stress and IGF inhibition compared to control. Further, the cytokine analysis also revealed that cells devoid of IGF2 activated an increase in cytokines such as IL-8, CX43, ICAM-1, IL-17, CCL3, and MCP-1 and decreased paraoxonase compared to normal control cells. On the other hand, ARPE-19 cells grown in high glucose shows that IGF2 increases the survival genes with reduced levels of inflammatory cytokines. CONCLUSION The finding of the investigation, therefore, shows that the use of IGF2 activators may prevent the progression of ocular dysfunction in the control of diabetes-related complications.
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Affiliation(s)
- Yantao Zhao
- Department of Ophthalmology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhaohui Xiong
- Department of Ophthalmology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yuping Chen
- Department of Ophthalmology, People's Hospital of Gaoqing County, Zibo City, China
| | - Guoqiang Wang
- Department of Ophthalmology, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yan Zhao
- Department of Ophthalmology, The First Hospital of Hebei Medical University, Shijiazhuang, China
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Liu F, Han F, Liu X, Yang L, Jiang C, Cui C, Yuan F, Zhang X, Gong L, Hou X, Liu Y, Chen L. Cross-Sectional Analysis of the Involvement of Interleukin-17A in Diabetic Retinopathy in Elderly Individuals with Type 2 Diabetes Mellitus. Diabetes Metab Syndr Obes 2021; 14:4199-4207. [PMID: 34675572 PMCID: PMC8517528 DOI: 10.2147/dmso.s302199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND To investigate the correlation between serum interleukin-17A (IL-17A) levels and diabetic retinopathy (DR) in elderly individuals with type 2 diabetes mellitus (T2DM). METHODS The study included 194 elderly patients (94 males and 100 females) with T2DM. Digital retinal photography as well as fundus fluorescein angiography was employed to distinguish between nonproliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR). In addition, multiple logistic regression analysis was conducted to determine the correlation between serum IL-17A levels and DR status. RESULTS The average age of the study cohort was 69.14 ± 6.33 years, of which 52.08% were male. The study participants with the highest IL-17A (Q4) levels had higher TC, DBP, and low-density lipoprotein cholesterol (LDL-C) values than those the other groups. Analysis using unadjusted and adjusted linear regression revealed that the effect size of 1.09 for DR in the unadjusted model indicates that IL-17A is associated with an increase of 1.09 in DR (mmol/L) (β 1.09, 95% confidence interval (CI) 1.03, 1.16). Using the minimum-adjusted model (the model 2), as IL-17A increased, DR was higher by 1.11 (β 1.11, 95% CI 1.04, 1.18). With the fully adjusted model (the model 3), for each additional IL-17A increase, DR was higher by 1.15 (β 1.15, 95% CI 1.06, 1.24). CONCLUSION Serum IL-17A levels are apparently positively correlated to DR in Chinese elderly individuals with T2DM.
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Affiliation(s)
- Fuqiang Liu
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Feng Han
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
- Department of Endocrinology, Zhangqiu District People’s Hospital, Jinan, 250200, People’s Republic of China
| | - Xiaoli Liu
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
- Department of Endocrinology, Zhangqiu District People’s Hospital, Jinan, 250200, People’s Republic of China
| | - Lina Yang
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
- Department of Endocrinology, Zhangqiu District People’s Hospital, Jinan, 250200, People’s Republic of China
| | - Caixia Jiang
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
- Department of Endocrinology, Zhangqiu District People’s Hospital, Jinan, 250200, People’s Republic of China
| | - Chen Cui
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Fang Yuan
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Xin Zhang
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Lei Gong
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Xinguo Hou
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
| | - Yuan Liu
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
- Correspondence: Yuan Liu; Li Chen Email ;
| | - Li Chen
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Institute of Endocrine and Metabolic Diseases of Shandong University, Jinan, Shandong, 250012, People’s Republic of China
- Key Laboratory of Endocrine and Metabolic Diseases, Shandong Province Medicine & Health, Jinan, Shandong, 250012, People’s Republic of China
- Jinan Clinical Research Center for Endocrine and Metabolic Diseases, Jinan, Shandong, 250012, People’s Republic of China
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Self-Assembling Tacrolimus Nanomicelles for Retinal Drug Delivery. Pharmaceutics 2020; 12:pharmaceutics12111072. [PMID: 33182620 PMCID: PMC7698121 DOI: 10.3390/pharmaceutics12111072] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 12/16/2022] Open
Abstract
Neovascular age-related macular degeneration (AMD) is characterized by an increase in reactive oxygen species (ROS) and pro-inflammatory cytokines in the retinal pigment epithelium cells. The primary purpose of this study was the development of a clear, tacrolimus nanomicellar formulation (TAC-NMF) for AMD. The optimized formulation had a mean diameter of 15.41 nm, a zeta potential of 0.5 mV, and an entrapment efficiency of 97.13%. In-vitro cytotoxicity studies revealed the dose-dependent cytotoxicity of TAC-NMF on various ocular cell lines, such as human retinal pigment epithelium (D407), monkey retinal choroidal endothelial (RF/6A) cells, and human corneal epithelium (CCL 20.2) cells. Cellular uptake and in-vitro distribution studies using flow cytometry and confocal microscopy, respectively, indicated an elevated uptake of TAC-NMF in a time-dependent manner. Biocompatibility assay using macrophage RAW 264.7 cell line resulted in low production of inflammatory cytokines such as IL-6, IL-1β and TNF-α after treatment with TAC-NMF. There was a decrease in ROS in D407 cells pre-treated with sodium iodate (ROS inducing agent) after treating with TAC-NMF and tacrolimus drug. Similarly, there was a reduction in the pro-inflammatory cytokines and VEGF-A in D407 cells pretreated with sodium iodate. This indicates that TAC-NMF could lower pro-inflammatory cytokines and ROS commonly seen in AMD.
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Jiang H, Zhang H, Yang Y, Yang X. Associations of myeloperoxidase, interleukin-17A and heparin-binding EGF-like growth factor levels with in-stent restenosis after percutaneous coronary intervention: a single-centre case-control study in China. BMJ Open 2020; 10:e039405. [PMID: 33158827 PMCID: PMC7651712 DOI: 10.1136/bmjopen-2020-039405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES To investigate the changes in serum myeloperoxidase (MPO), interleukin (IL)-17A and heparin-binding EGF-like growth factor (HB-EGF) levels before and after percutaneous coronary intervention (PCI), and to evaluate the associations of MPO, IL-17A and HB-EGF levels with the 1-year restenosis rate. DESIGN Case-control study. SETTINGS Xiangyang Central Hospital between January 2012 and December 2017. PARTICIPANTS Patients with coronary heart disease who underwent PCI. INTERVENTIONS Not applicable. PRIMARY AND SECONDARY OUTCOME MEASURES Not applicable. RESULTS Finally, 407 and 132 patients were included in the control and in-stent restenosis (ISR) groups, respectively. The general clinical characteristics of the patients were not significantly different between the two groups. The MPO, IL-17A and HB-EGF levels were not significantly different between the two groups at baseline but significantly increased after PCI. The ISR group showed higher levels of MPO, IL-17A and HB-EGF compared with the control group at all postoperative time points. Multivariable analysis showed that MPO, IL-17A and HB-EGF were associated with increased ISR [MPO (OR=1.003; 95% CI: 1.001 to 1.005; p=0.002), IL-17A (OR=1.015; 95% CI: 1.009 to 1.020; p<0.0001) and HB-EGF (OR=2.256; 95% CI: 1.103 to 4.009; p=0.002)]. All three factors had sensitivity and specificity ≥68% for ISR. CONCLUSIONS HB-EGF could be used for the detection of ISR after PCI and could be of use for the prediction of ISR, but the value of MPO and IL-17A might be more limited. This will have to be validated in future studies.
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Affiliation(s)
- Hua Jiang
- Department of Medical Examination, Xiangyang Central Hospital, Xiangyang, Hubei, China
| | - Hongmei Zhang
- Department of Clinical Laboratory, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Yang
- Department of Endocrinology, Xiangyang Central Hospital, Xiangyang, Hubei, China
| | - Xuezhou Yang
- Reproductive Medicine Center, Xiangyang Central Hospital, Xiangyang, Hubei, China
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The cells involved in the pathological process of diabetic retinopathy. Biomed Pharmacother 2020; 132:110818. [PMID: 33053509 DOI: 10.1016/j.biopha.2020.110818] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 09/20/2020] [Accepted: 09/25/2020] [Indexed: 01/04/2023] Open
Abstract
Diabetic retinopathy(DR) is an expanding global health problem, the exact mechanism of which has not yet been clarified clearly, new insights into retinal physiology indicate that diabetes-induced retinal dysfunction may be viewed as an impairment of the retinal neurovascular unit, including retinal ganglion cells, glial cells, endothelial cells, pericytes, and retinal pigment epithelium. Different retinal cells have unique structure and functions, while the interactions among which are less known. Cells are the basic unit of organism structure and function, their impairment could lead to abnormal physiological functions and even organ disorder. Considering the body is multi-dimension and the complexity of DR, one point or a single type of cell can't be used to illustrate the mechanism of occurrence and development of DR. In this review, we provided a systematic and comprehensive elaboration of the cells that are involved in the process of DR. We underlined the importance of considering the neurovascular unit, not just retinal vascular and neural cells, in understanding the pathophysiology of DR. Our studies provided a better understanding of the pathological process in DR and provide a theoretical basis for further research.
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Taguchi M, Someya H, Inada M, Nishio Y, Takayama K, Harimoto K, Karasawa Y, Ito M, Takeuchi M. Retinal changes in mice spontaneously developing diabetes by Th17-cell deviation. Exp Eye Res 2020; 198:108155. [PMID: 32717339 DOI: 10.1016/j.exer.2020.108155] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/30/2020] [Accepted: 07/16/2020] [Indexed: 10/23/2022]
Abstract
Elevated level of interleukin (IL)-17, predominantly produced by T helper (Th) 17 cells, has been implicated in diabetic retinopathy (DR), but it remains unclear whether IL-17 is involved in the pathogenesis of DR. Ins2Akita (Akita) mice spontaneously develop diabetes, and show early pathophysiological changes in diabetic complications. On the other hand, interferon-γ knock out (GKO) mice exhibit high differentiation and activation of Th2 and Th17 cells as a result of Th1 cell inhibition. In this study, Ins2Akita IFN-γ-deficient (Akita-GKO) mice were established by crossbreeding Akita mice with GKO mice, and Th17-mediated immune responses on DR were investigated. Blood glucose levels (BGL) of Akita mice and Akita-GKO mice were significantly higher than those of age-matched wild type (WT) or GKO mice, and there was no significant difference in BGL between Akita and Akita-GKO mice. Relative mRNA expression of ROR-γt that is a transcriptional factor of Th17 cells but not GATA-3 that is for Th2 cells was significantly upregulated only in Akita-GKO mice compared with WT mice, and the proportions of IL-17 and IL-22-producing splenic CD4+ cells were significantly higher in Akita-GKO mice than in wild type (WT), Akita, or GKO mice. In the retina, mRNA expression of vascular endothelial growth factor (VEGF) and intercellular adhesion molecule-1 (ICAM-1) were increased in Akita-GKO mice more than in Akita or GKO mice, and statistically significant differences were observed between Akita-GKO mice and WT mice. Leukostasis in retinal vessels and ocular level of VEGF protein increased significantly in Akita-GKO mice compared with the other groups. Edematous change in the retinal surface layer, retinal exudative lesions depicted as areas of hyperfluorescence in fluorescein angiography (FA), and vascular basement membrane thickening in all layers of the retina were also observed in Akita-GKO mice at 9-week-old but not in age-matched Akita or GKO mice. These results suggested that Th17 cell-mediated immune responses might be involved in promotion of functional and morphological changes in the retina of mice spontaneously developing diabetes.
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Affiliation(s)
- Manzo Taguchi
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Hideaki Someya
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Makoto Inada
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Yoshiaki Nishio
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Kei Takayama
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Kozo Harimoto
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Yoko Karasawa
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Masataka Ito
- Department of Developmental Anatomy, NDMC, Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan
| | - Masaru Takeuchi
- Department of Ophthalmology, National Defense Medical College (NDMC), Namiki 3-2, Tokorozawa, Saitama, 359-0042, Japan.
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Zapadka TE, Lindstrom SI, Taylor BE, Lee CA, Tang J, Taylor ZRR, Howell SJ, Taylor PR. RORγt Inhibitor-SR1001 Halts Retinal Inflammation, Capillary Degeneration, and the Progression of Diabetic Retinopathy. Int J Mol Sci 2020; 21:E3547. [PMID: 32429598 PMCID: PMC7279039 DOI: 10.3390/ijms21103547] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 01/08/2023] Open
Abstract
Diabetic retinopathy is a diabetes-mediated retinal microvascular disease that is the leading cause of blindness in the working-age population worldwide. Interleukin (IL)-17A is an inflammatory cytokine that has been previously shown to play a pivotal role in the promotion and progression of diabetic retinopathy. Retinoic acid-related orphan receptor gammaT (RORγt) is a ligand-dependent transcription factor that mediates IL-17A production. However, the role of RORγt in diabetes-mediated retinal inflammation and capillary degeneration, as well as its potential therapeutic attributes for diabetic retinopathy has not yet been determined. In the current study, we examined retinal inflammation and vascular pathology in streptozotocin-induced diabetic mice. We found RORγt expressing cells in the retinal vasculature of diabetic mice. Further, diabetes-mediated retinal inflammation, oxidative stress, and retinal endothelial cell death were all significantly lower in RORγt-/- mice. Finally, when a RORγt small molecule inhibitor (SR1001) was subcutaneously injected into diabetic mice, retinal inflammation and capillary degeneration were ameliorated. These findings establish a pathologic role for RORγt in the onset of diabetic retinopathy and identify a potentially novel therapeutic for this blinding disease.
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MESH Headings
- Animals
- Capillaries/drug effects
- Capillaries/pathology
- Cell Death/genetics
- Cell Survival/drug effects
- Cell Survival/genetics
- Diabetes Mellitus, Experimental/chemically induced
- Diabetes Mellitus, Experimental/metabolism
- Diabetic Retinopathy/chemically induced
- Diabetic Retinopathy/drug therapy
- Diabetic Retinopathy/metabolism
- Drug Inverse Agonism
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Hyperglycemia/blood
- Hyperglycemia/genetics
- Inflammation/genetics
- Inflammation/metabolism
- Inflammation/pathology
- Interleukin-17/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Nuclear Receptor Subfamily 1, Group F, Member 3/antagonists & inhibitors
- Nuclear Receptor Subfamily 1, Group F, Member 3/genetics
- Nuclear Receptor Subfamily 1, Group F, Member 3/metabolism
- Oxidative Stress/genetics
- Retinal Vessels/drug effects
- Retinal Vessels/metabolism
- Retinal Vessels/pathology
- Sulfonamides/pharmacology
- Sulfonamides/therapeutic use
- Thiazoles/pharmacology
- Thiazoles/therapeutic use
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Affiliation(s)
- Thomas E. Zapadka
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
| | - Sarah I. Lindstrom
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Brooklyn E. Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Chieh A. Lee
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Jie Tang
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Zakary R. R. Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Scott J. Howell
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
| | - Patricia R. Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH 44106, USA; (T.E.Z.); (S.I.L.); (B.E.T.); (C.A.L.); (J.T.); (Z.R.R.T.); (S.J.H.)
- Louis Stokes Cleveland VA Medical Center, Cleveland, OH 44106, USA
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Sun Q, Gong L, Qi R, Qing W, Zou M, Ke Q, Zhang L, Tang X, Nie Q, Yang Y, Hu A, Ding X, Lu L, Liu Y, Li DWC. Oxidative stress-induced KLF4 activates inflammatory response through IL17RA and its downstream targets in retinal pigment epithelial cells. Free Radic Biol Med 2020; 147:271-281. [PMID: 31881336 DOI: 10.1016/j.freeradbiomed.2019.12.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/17/2019] [Accepted: 12/21/2019] [Indexed: 11/19/2022]
Abstract
Age-related macular degeneration (AMD) is a leading cause of irreversible blindness worldwide. Oxidative stress (OS), inflammation and genetics are considered the key pathogenic factors contributing to AMD development. Recent evidence shows the pro-inflammatory interleukin 17 (IL17) signaling is activated in AMD patients and promotes disease pathogenesis. However, the interplay between OS and IL17 signaling, and the regulatory mechanism of IL17 pathway are largely unknown. OS-induced retinal pigment epithelial cell (RPE) damage causes both the initial pathogenesis of AMD and secondary degeneration of rods and cones. Healthy RPE is essential for ocular immune privilege, however, damaged RPE cells can activate inflammatory response. In the present study, we identified IL17RA, the principle receptor of IL17 signaling, is one of the most upregulated inflammatory genes in human RPE cells upon OS exposure. The prominent increase of IL17RA was also observed in RPE and retina of an AMD-like mouse model. Knockdown of IL17RA in RPE cells prevented OS-induced RPE cell apoptosis and reduced the inflammatory response in both RPE and macrophages. Furthermore, we found that transcription factor KLF4 directly activates IL17RA expression, therefore, promotes the production of IL1β and IL8 in an IL17RA-dependent manner. In addition, the mRNA level of KLF4 isoform 2 was positively correlated with that of IL17RA in AMD patients. Together, our study demonstrates an unrevealed relationship between IL17RA and OS, and a new regulatory mechanism of IL17RA by KLF4 in RPE cells. These findings suggest that inhibition of IL17RA as a new potential therapeutic target for AMD through RPE protection and inflammatory suppression upon OS exposure.
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Affiliation(s)
- Qian Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Lili Gong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China.
| | - Ruili Qi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Wenjie Qing
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Ming Zou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Qin Ke
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Lan Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Xiangcheng Tang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Qian Nie
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Yuan Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Andina Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Xiaoyan Ding
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Lin Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - Yizhi Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China
| | - David Wan-Cheng Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, 510060, China.
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Systems-Pharmacology-Based Identification of Antitumor Necrosis Factor Effect in Mimeng Flower Decoction for the Treatment of Diabetic Retinopathy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:5107103. [PMID: 31827551 PMCID: PMC6885793 DOI: 10.1155/2019/5107103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/14/2019] [Accepted: 10/22/2019] [Indexed: 11/30/2022]
Abstract
The traditional Chinese medicine of Mimeng flower decoction (MFD) is effective in treating diabetic retinopathy (DR), but the mechanism is still unclear. This study aims at investigating the mechanism of MFD in treating DR. First, active compounds in MFD were filtered out by the systems pharmacology method and used as bait to fish potential targets. The common genes between the targets and DR-related genes were selected to construct the compound-target-disease network and identify the network hub gene as a key gene. Molecular docking was simulated to assess the binding affinity of active compounds towards the gene protein. Streptozotocin- (STZ-) induced diabetic rat model was administered to evaluate the efficacy of MFD in treating DR and its effects on retinal gene expression. Finally, 53 active compounds were screened out from the seven herbs in MFD, with a total of 136 targets. After intersecting with 210 DR-related genes, 21 common genes were applied to construct the network, and tumor necrosis factor (TNF) was identified as the hub gene. The active compounds of acacetin, kaempferol, luteolin, and quercetin showed a good binding affinity towards TNF (C-score ≥ 4). In diabetic rats, MFD treatment reversed the retinal impairment and decreased retinal TNF expression significantly. In conclusion, this study adopted the method of systems pharmacology to screen out active compounds and construct the compound-target-disease network and found that MFD could ameliorate DR by downregulating the network hub gene of TNF.
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Mu P, Tang X, Tan Y, Wang Y, Lin S, Wang M, Shu J, Wang J, Zhang Y, Liang H, Lin B, Cai M, Chen Y. Effect of basal insulin supplement therapy on diabetic retinopathy in short-duration type 2 diabetes: A one-year randomized parallel-group trial. J Diabetes 2019; 11:949-957. [PMID: 30973204 PMCID: PMC6899662 DOI: 10.1111/1753-0407.12928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 03/25/2019] [Accepted: 04/08/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND In this study, we compared the effect on diabetic retinopathy (DR) between oral antidiabetic drugs (OADs) alone and in combination with basal insulin-supported OADs therapy (BOT). [Correction added on 11 November 2019, after first online publication: In Abstract under Background section, "DR" has been corrected into "diabetic retinopathy (DR)".] METHODS: Between January 2015 and January 2018, this study enrolled 290 patients (age 18-65 years) with diabetes duration between 0 and 5 years. Patients were randomly assigned to receive OADs or BOT after 14 days intensive insulin treatment. Examinations were performed at the beginning and end of the study. RESULTS Fewer patients developed DR in the BOT than OADs group (8 [6.06%] vs 12 [8.3%], respectively), and all cases of DR were non-proliferative. Blood glucose concentrations were higher in the BOT than OADs group at the 3rd month, but lower in the former at the 6th and 12th month. The rate of reaching target HbA1c ≤7% was lower in the BOT than OADs group at the 3rd month (63.6% vs 72.2%, respectively), similar between the two groups at the 6th month (60.6% vs 66.6%, respectively) and higher in the BOT group at the 12th month (75.0% vs 61.1%, respectively). The SD of fasting blood glucose (FBG), coefficient of variation of FBG, SD of blood glucose (SDBG), and mean amplitude of glycemic excursions were lower in the BOT than OADs group. Changes in the levels of three cytokines (interleukin [IL]-1β, IL-6, and IL-17α) were significantly less in the BOT than OADs group. CONCLUSIONS Twelve months of BOT decreased the incidence of DR in short-duration type 2 diabetes by reducing glycemia more effectively, stably, and completely than OADs alone.
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Affiliation(s)
- Pan‐Wei Mu
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Xi‐Xiang Tang
- Advanced Medical CenterThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Ying Tan
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Yi‐Na Wang
- Advanced Medical CenterThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
| | - Shuo Lin
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Man‐Man Wang
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Jiong Shu
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Jing Wang
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen University, Yuedong HospitalMeizhouChina
| | - Yong‐Jun Zhang
- Department of EndocrinologyThe Fifth Affiliated Hospital of Zunyi Medical UniversityZhuhaiChina
| | - Hua Liang
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Bai‐Run Lin
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen University, Yuedong HospitalMeizhouChina
| | - Meng‐Yin Cai
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
| | - Yan‐Ming Chen
- Department of EndocrinologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina
- Department of Science and Technology, Guangdong Provincial Key Laboratory of DiabetologyGuangzhouChina
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Wu Z, Ding L, Bao J, Liu Y, Zhang Q, Wang J, Li R, Ishfaq M, Li J. Co-infection of Mycoplasma gallisepticum and Escherichia coli Triggers Inflammatory Injury Involving the IL-17 Signaling Pathway. Front Microbiol 2019; 10:2615. [PMID: 31803158 PMCID: PMC6872679 DOI: 10.3389/fmicb.2019.02615] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/28/2019] [Indexed: 01/13/2023] Open
Abstract
Mycoplasma gallisepticum and Escherichia coli are well known respiratory disease-inducing pathogens. Previous studies have reported that co-infection by MG and E.coli causes significant economic loss in the poultry industry. In order to assess the respiratory toxicity of co-infection in chicken lung, we established a co-infection model to investigate changes in the inflammatory cytokines, lung tissue structure, and transcriptome profiles of chicken lung. The results showed that co-infection caused a wider range of immune damage and more severe tissue lesions than single-pathogen infection. Differentially expressed gene (DEG) analysis indicated that 3,115/1,498/1,075 genes were significantly expressed among the three infection groups, respectively. Gene ontology and KEGG analysis showed genes enriched in response to immune response, cytokine-cytokine receptor interaction, and inflammation-related signaling pathways. Among these pathways, IL-17 signaling was found to be significantly enriched only in co-infection. The expression of IL-17C, CIKS, TRAF6, NFκB, C/EBPβ, and inflammatory chemokines were significantly up-regulated in response to co-infection. Taken together, we concluded that co-infection increased the expression of inflammatory chemokines in lungs through IL-17 signaling, leading to cilia loss and excessive mucus secretion. These results provide new insights into co-infection and reveal target proteins for drug therapy.
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Affiliation(s)
- Zhiyong Wu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Liangjun Ding
- College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Jiaxin Bao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yuhao Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Qiaomei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jian Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Rui Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Muhammad Ishfaq
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jichang Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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Chen X, Yu X, Li X, Li L, Li F, Guo T, Guan C, Miao L, Cao G. MiR-126 targets IL-17A to enhance proliferation and inhibit apoptosis in high-glucose-induced human retinal endothelial cells. Biochem Cell Biol 2019; 98:277-283. [PMID: 31608649 DOI: 10.1139/bcb-2019-0174] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Diabetic retinopathy (DR) is a common complication of diabetes mellitus (DM), which results in vision loss. This study explored the role of miR-126 in high-glucose-induced human retinal endothelial cells (HRECs) and its underlying molecular mechanisms. The results showed that the expression levels of miR-126 and interleukin-17A (IL-17A) in high-glucose-induced HRECs were downregulated and upregulated, respectively. Functionally, overexpression of miR-126 promoted proliferation and suppressed apoptosis in high-glucose-induced HRECs, while IL-17A reversed the effects induced by miR-126. However, overexpression of IL-17A inhibited the proliferation and induced apoptosis, while knockdown of IL-17A accelerated the proliferation and repressed apoptosis. In addition, miR-126 repressed the expression of IL-17A, Bax, and caspase-3, while promoting the expression of survivin and phosphorylation of PI3K and AKT; restoration of IL-17A rescued these effects. Furthermore, IL-17A was identified as a target of miR-126. This indicates that miR-126 enhances proliferation and inhibits apoptosis in high-glucose-induced HRECs by activating the PI3K-AKT pathway, increasing survivin levels, and decreasing Bax and caspase-3 expression by targeting IL-17A, suggesting that miR-126 could be a novel target for preventing DR.
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Affiliation(s)
- Xiujuan Chen
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Xuequn Yu
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Xinxiang Li
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Li Li
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Fang Li
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Ting Guo
- Central Laboratory, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Cuihong Guan
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Liping Miao
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
| | - Guoping Cao
- Department of Ophthalmology, Jiangsu Taizhou People's Hospital, Taizhou 225000, Jiangsu, China
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Liu Z, Qiu AW, Huang Y, Yang Y, Chen JN, Gu TT, Cao BB, Qiu YH, Peng YP. IL-17A exacerbates neuroinflammation and neurodegeneration by activating microglia in rodent models of Parkinson's disease. Brain Behav Immun 2019; 81:630-645. [PMID: 31351185 DOI: 10.1016/j.bbi.2019.07.026] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/17/2019] [Accepted: 07/23/2019] [Indexed: 12/26/2022] Open
Abstract
Neuroinflammation has been involved in pathogenesis of Parkinson's disease (PD), a chronic neurodegenerative disease characterized neuropathologically by progressive dopaminergic neuronal loss in the substantia nigra (SN). We recently have shown that helper T (Th)17 cells facilitate dopaminergic neuronal loss in vitro. Herein, we demonstrated that interleukin (IL)-17A, a proinflammatory cytokine produced mainly by Th17 cells, contributed to PD pathogenesis depending on microglia. Mouse and rat models for PD were prepared by intraperitoneal injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) or striatal injection of 1-methyl-4-phenylpyridinium (MPP+), respectively. Both in MPTP-treated mice and MPP+-treated rats, blood-brain barrier (BBB) was disrupted and IL-17A level increased in the SN but not in cortex. Effector T (Teff) cells that were adoptively transferred via tail veins infiltrated into the brain of PD mice but not into that of normal mice. The Teff cell transfer aggravated nigrostriatal dopaminergic neurodegeneration, microglial activation and motor impairment. Contrarily, IL-17A deficiency alleviated BBB disruption, dopaminergic neurodegeneration, microglial activation and motor impairment. Anti-IL-17A-neutralizing antibody that was injected into lateral cerebral ventricle in PD rats ameliorated the manifestations mentioned above. IL-17A activated microglia but did not directly affect dopaminergic neuronal survival in vitro. IL-17A exacerbated dopaminergic neuronal loss only in the presence of microglia, and silencing IL-17A receptor gene in microglia abolished the IL-17A effect. IL-17A-treated microglial medium that contained higher concentration of tumor necrosis factor (TNF)-α facilitated dopaminergic neuronal death. Further, TNF-α-neutralizing antibody attenuated MPP+-induced neurotoxicity. The findings suggest that IL-17A accelerates neurodegeneration in PD depending on microglial activation and at least partly TNF-α release.
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Affiliation(s)
- Zhan Liu
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Ao-Wang Qiu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province 210029, China
| | - Yan Huang
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Ya Yang
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Jin-Na Chen
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Ting-Ting Gu
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Bei-Bei Cao
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China
| | - Yi-Hua Qiu
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China.
| | - Yu-Ping Peng
- Department of Physiology, School of Medicine, and Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001, China.
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Lindstrom SI, Sigurdardottir S, Zapadka TE, Tang J, Liu H, Taylor BE, Smith DG, Lee CA, DeAngelis J, Kern TS, Taylor PR. Diabetes induces IL-17A-Act1-FADD-dependent retinal endothelial cell death and capillary degeneration. J Diabetes Complications 2019; 33:668-674. [PMID: 31239234 PMCID: PMC6690768 DOI: 10.1016/j.jdiacomp.2019.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/15/2019] [Accepted: 05/22/2019] [Indexed: 12/19/2022]
Abstract
PURPOSE Diabetes leads to progressive complications such as diabetic retinopathy, which is the leading cause of blindness within the working-age population worldwide. Interleukin (IL)-17A is a cytokine that promotes and progresses diabetes. The objective of this study was to determine the role of IL-17A in retinal capillary degeneration, and to identify the mechanism that induces retinal endothelial cell death. These are clinically meaningful abnormalities that characterize early-stage non-proliferative diabetic retinopathy. METHODS Retinal capillary degeneration was examined in vivo using the streptozotocin (STZ) diabetes murine model. Diabetic-hyperglycemia was sustained for an 8-month period in wild type (C57BL/6) and IL-17A-/- mice to elucidate the role of IL-17A in retinal capillary degeneration. Further, ex vivo studies were performed in retinal endothelial cells to identify the IL-17A-dependent mechanism that induces cell death. RESULTS It was determined that diabetes-induced retinal capillary degeneration was significantly lower in IL-17A-/- mice. Further, retinal endothelial cell death occurred through an IL-17A/IL-17R ➔ Act1/FADD signaling cascade, which caused caspase-mediated apoptosis. CONCLUSION These are the first findings that establish a pathologic role for IL-17A in retinal capillary degeneration. Further, a novel IL-17A-dependent apoptotic mechanism was discovered, which identifies potential therapeutic targets for the early onset of diabetic retinopathy.
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Affiliation(s)
- Sarah I Lindstrom
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Sigrun Sigurdardottir
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Thomas E Zapadka
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Jie Tang
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Haitao Liu
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Brooklyn E Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Dawn G Smith
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - Chieh A Lee
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America
| | - John DeAngelis
- James E. Van Zandt VA Medical Center, Altoona, PA, United States of America
| | - Timothy S Kern
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America; Louis Stokes VA Medical Center, Cleveland, OH, United States of America
| | - Patricia R Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States of America; Louis Stokes VA Medical Center, Cleveland, OH, United States of America.
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49
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Sigurdardottir S, Zapadka TE, Lindstrom SI, Liu H, Taylor BE, Lee CA, Kern TS, Taylor PR. Diabetes-mediated IL-17A enhances retinal inflammation, oxidative stress, and vascular permeability. Cell Immunol 2019; 341:103921. [PMID: 31076079 DOI: 10.1016/j.cellimm.2019.04.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/03/2019] [Accepted: 04/24/2019] [Indexed: 11/25/2022]
Abstract
Diabetic retinopathy is a prevailing diabetes complication, and one of the leading causes of blindness worldwide. IL-17A is a cytokine involved in the onset of diabetic complications. In the current study, we examined the role of IL-17A in the development of retinal inflammation and long-term vascular pathology in diabetic mice. We found IL-17A expressing T cells and neutrophils in the retinal vasculature. Further, the IL-17A receptor was expressed on Muller glia, retinal endothelial cells, and photoreceptors. Finally, diabetes-mediated retinal inflammation, oxidative stress, and vascular leakage were all significantly lower in IL-17A-/- mice. These are all clinically meaningful abnormalities that characterize the onset of diabetic retinopathy.
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Affiliation(s)
- Sigrun Sigurdardottir
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Thomas E Zapadka
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Sarah I Lindstrom
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Haitao Liu
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Brooklyn E Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Chieh A Lee
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States
| | - Timothy S Kern
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, OH, United States; Louis Stokes VA Medical Center, Cleveland, OH, United States
| | - Patricia R Taylor
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University, School of Medicine, Cleveland, OH, United States; Louis Stokes VA Medical Center, Cleveland, OH, United States.
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50
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Yao Y, Li R, Du J, Long L, Li X, Luo N. Interleukin-6 and Diabetic Retinopathy: A Systematic Review and Meta-Analysis. Curr Eye Res 2019; 44:564-574. [PMID: 30644770 DOI: 10.1080/02713683.2019.1570274] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Interleukin-6 (IL-6) is produced by a variety of cells involved in inflammation and acts as local intensification signals in pathological processes associated with chronic eye inflammation. This meta-analysis was performed to provide a better understanding of the relationship between IL-6 and diabetic retinopathy. METHODS The study was started with systematic search for literatures by using the PubMed, Web of Science and Embase online databases. The standard mean difference (SMD) and its 95% confidence intervals (CIs) were was included and then pooled with a random effects model. RESULTS Thirty-one articles, containing1099 DR patients and 1010 controls, were included in this meta-analysis. The level of IL-6 in the DR group was found to be higher than that in the control group (SMD: 2.12, 95% CI: 1.53-2.70, p < 0.00001).Obvious heterogeneity existed between the studies (p < 0.00001, I2 = 96%). So a subgroup analysis and sensitivity analysis were performed. Removing the sensitivity studies, the stability of the overall treatment effect was good. Subgroup analysis showed that the levels of IL-6 in case group were observed to be higher than those in the control group; and the IL-6 levels in the proliferative diabetic retinopathy (PDR) group were also higher than those in the non-proliferative diabetic retinopathy (NPDR) group. (SMD: 0.78, 95% CI: 0.26-1.31, p= 0.003) Conclusion: The results from this current meta-analysis indicated that increased level of IL-6 generally exist in DR patients. And it may associated with the severity of DR. However, large-scale and high-quality studies in future are required to confirm the present findings.
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Affiliation(s)
- Yang Yao
- a Department of Central Laboratory, The First Affiliated Hospital , Xi'an Medical University , Xi'an , Shaanxi , China
| | - Rong Li
- b Department of Ophthalmology, The First Affiliated Hospital , Xi'an Medical University , Xi'an , Shaanxi , PR China
| | - Junhui Du
- c Department of Ophthalmology, Xi'an Ninth Hospital , Medical College of Xi'an Jiaotong University , Xi'an , Shanxi , China
| | - Lihui Long
- d Department of pharmacy, The First Affiliated Hospital , Xi'an Medical University , Xi'an , Shaanxi , PR China
| | - Xiangnan Li
- e Clinical Medicine (Four-year program) of Grade 2014 , Xi'an Medical University , Xi'an , Shaanxi , PR China
| | - Na Luo
- e Clinical Medicine (Four-year program) of Grade 2014 , Xi'an Medical University , Xi'an , Shaanxi , PR China
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