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Feng L, Yuan J, Li L, Tang J. Identification of Pyroptosis-Related Molecular Subtypes and Diagnostic Model development in Major Depressive Disorder. Mol Biotechnol 2024:10.1007/s12033-024-01252-0. [PMID: 39177862 DOI: 10.1007/s12033-024-01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Accepted: 08/07/2024] [Indexed: 08/24/2024]
Abstract
Major depressive disorder (MDD) is a prevalent psychological disorder associated with inflammation, with complex pathological mechanisms. Pyroptosis has been suggested to contribute to inflammation in central nervous system diseases. Little research, however, has examined what role pyroptosis played in MDD. In the present study, the differential expression pyroptosis-related genes (DE-PRGs) in MDD were identified from the GEO database (GSE98793 and GSE19738). Then, consensus clustering analysis was used to evaluate differences in MDD molecular subtypes characteristics based on PRGs. The characteristic diagnostic biomarkers for MDD were identified by Weighted Correlation Network Analysis (WGCNA) and multiple machine learning algorithms. Three intersection genes (GZMA, AKR1C3, and CD52) were obtained, which are expected to become potential biomarkers for MDD with excellent reliability and accuracy. Subsequently, the immune infiltration characteristics result indicated that the development of MDD is mediated by immune-related function, where three DE-PRGs were strongly related to the immune infiltration landscape of MDD. The biological experiments in vitro further proved that three unique PRGs are emerging as important players in MDD diagnosis. Our research aimed to provide novel ideas and biomarkers targeting MDD.
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Affiliation(s)
- Lin Feng
- Harbin Sport University, Harbin, Heilongjiang, China
- The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, China
| | - Jiabo Yuan
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, China
| | - Li Li
- Harbin Sport University, Harbin, Heilongjiang, China.
| | - Junze Tang
- Harbin Sport University, Harbin, Heilongjiang, China.
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2
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Sun Y, Li F, Liu Y, Qiao D, Yao X, Liu GS, Li D, Xiao C, Wang T, Chi W. Targeting inflammasomes and pyroptosis in retinal diseases-molecular mechanisms and future perspectives. Prog Retin Eye Res 2024; 101:101263. [PMID: 38657834 DOI: 10.1016/j.preteyeres.2024.101263] [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: 07/30/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
Retinal diseases encompass various conditions associated with sight-threatening immune responses and are leading causes of blindness worldwide. These diseases include age-related macular degeneration, diabetic retinopathy, glaucoma and uveitis. Emerging evidence underscores the vital role of the innate immune response in retinal diseases, beyond the previously emphasized T-cell-driven processes of the adaptive immune system. In particular, pyroptosis, a newly discovered programmed cell death process involving inflammasome formation, has been implicated in the loss of membrane integrity and the release of inflammatory cytokines. Several disease-relevant animal models have provided evidence that the formation of inflammasomes and the induction of pyroptosis in innate immune cells contribute to inflammation in various retinal diseases. In this review article, we summarize current knowledge about the innate immune system and pyroptosis in retinal diseases. We also provide insights into translational targeting approaches, including novel drugs countering pyroptosis, to improve the diagnosis and treatment of retinal diseases.
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Affiliation(s)
- Yimeng Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Fan Li
- Eye Center, Zhongshan City People's Hospital, Zhongshan, 528403, China
| | - Yunfei Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Dijie Qiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Xinyu Yao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Guei-Sheung Liu
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, 3002, Australia; Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, VIC, 3002, Australia
| | - Dequan Li
- Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Chuanle Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China
| | - Tao Wang
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Guangming District, Shenzhen, 518132, China; School of Basic Medical Sciences, Capital Medical University, 10 Xitoutiao You'anMen Street, Beijing, 100069, China
| | - Wei Chi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China.
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Hazlett LD, Xu S, Somayajulu M, McClellan SA. Host-microbe interactions in cornea. Ocul Surf 2023; 28:413-423. [PMID: 34619389 PMCID: PMC8977393 DOI: 10.1016/j.jtos.2021.09.008] [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: 08/20/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 11/23/2022]
Abstract
Corneal infections result through interaction between microbes and host innate immune receptors. Damage to the cornea occurs as a result of microbial virulence factors and is often exacerbated by lack of a controlled host immune response; the latter contributing to bystander damage to corneal structure. Understanding mechanisms involved in host microbial interactions is critical to development of novel therapeutic targets, ultimate control of microbial pathogenesis, and restoration of tissue homeostasis. Studies on these interactions continue to provide exciting findings directly related to this ultimate goal.
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Affiliation(s)
- Linda D Hazlett
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI, 48201, USA.
| | - Shunbin Xu
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Mallika Somayajulu
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI, 48201, USA
| | - Sharon A McClellan
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI, 48201, USA
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4
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Ramadan A, Cao Z, Gadjeva M, Zaidi TS, Rathinam VA, Panjwani N. The NLRP3 Inflammasome Is Required for Protection Against Pseudomonas Keratitis. Invest Ophthalmol Vis Sci 2023; 64:11. [PMID: 36749596 PMCID: PMC9919680 DOI: 10.1167/iovs.64.2.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/23/2023] [Indexed: 02/08/2023] Open
Abstract
Purpose The current study was designed to examine the role of the NLRP3 inflammasome pathway in the clearance of Pseudomonas aeruginosa (PA) infection in mouse corneas. Methods Corneas of wild type and NLRP3-/- mice were infected with PA. The severity of bacterial keratitis was graded on days 1 and 3 post-infection by slit lamp, and then corneas were harvested for: (i) bacterial enumeration, (ii) immune cell analysis by flow cytometry, (iii) immunoblotting analysis of cleaved caspase-1 and IL-1β, and (iv) IL-1β quantification by ELISA. In parallel experiments, severity of keratitis was examined in the wild-type mice receiving a subconjunctival injection of a highly selective NLRP3 inhibitor immediately prior to infection. Results Compared to wild type mice, NLRP3-/- mice exhibited more severe infection, as indicated by an increase in opacity score and an increase in bacterial load. The hallmark of inflammasome assembly is the activation of proinflammatory caspase-1 and IL-1β by cleavage of their precursors, pro-caspase-1 and pro-IL-1β, respectively. Accordingly, increased severity of infection in the NLRP3-/- mice was associated with reduced levels of cleaved forms of caspase-1 and IL-1β and reduced IL-1β+ neutrophil infiltration in infected corneas. Likewise, corneas of mice receiving subconjunctival injections of NLRP3 inhibitor exhibited increased bacterial load, and reduced IL-1β expression. Conclusions Activation of NLRP3 pathway is required for the clearance of PA infection in mouse corneas.
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Affiliation(s)
- Abdulraouf Ramadan
- New England Eye Center/Department of Ophthalmology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Zhiyi Cao
- New England Eye Center/Department of Ophthalmology, Tufts University School of Medicine, Boston, Massachusetts, United States
| | - Mihaela Gadjeva
- Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Tanweer S. Zaidi
- Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Vijay A. Rathinam
- Department of Immunology, UConn Health School of Medicine, Farmington, Connecticut, United States
| | - Noorjahan Panjwani
- New England Eye Center/Department of Ophthalmology, Tufts University School of Medicine, Boston, Massachusetts, United States
- Department of Developmental, Molecular, and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States
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Konda N, Chakrabarti S, Garg P, Willcox MDP. Association of Single-Nucleotide Polymorphisms in Interleukin Genes with Microbial Keratitis in a South Indian Population. Pathogens 2022; 11:1387. [PMID: 36422638 PMCID: PMC9692714 DOI: 10.3390/pathogens11111387] [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: 10/25/2022] [Revised: 11/12/2022] [Accepted: 11/19/2022] [Indexed: 05/03/2024] Open
Abstract
BACKGROUND To examine the relationship between single-nucleotide polymorphisms (SNPs) in interleukin (IL) genes and keratitis and its clinical manifestations. METHODS SNPs in IL1B, IL6, CXCL8, IL10, and IL12B were analysed. Differences in frequencies of alleles, genotypes and haplotypes between cases and controls as well as associations between SNPs and clinical variables were calculated by χ2 tests with odds ratios. RESULTS The minor homologous genotype in IL1B rs16944 (p = 0.036; odds ratio (OR) = 2.063, 95% confidence interval (CI): 1.048-4.061) and CXCL8 rs4073 (p = 0.041; OR = 0.463, 95% CI: 0.224-0.956) and the heterologous genotypes in IL6 rs1800795 (p = 0.046; OR = 0.563, 95% CI: 0.326-0.972) and IL12B rs2569254 (p = 0.0446; OR = 0.557, 95% CI: 0.314-0.989) or rs730691 (p = 0.0051; OR = 0.451, 95% CI: 0.260-0.784) were associated with keratitis. The minor genotype of rs16944 was associated with severe infection (p = 0.046). The heterologous genotype in rs2569254 was associated with hospital admission, photophobia, and mode of contact lens wear (p ≤ 0.041). The heterologous genotype in rs730691 was associated with blurred vision, discharge, anterior chamber reaction, and mode of wear (p ≤ 0.047). CONCLUSIONS This study demonstrates that SNPs in IL1B and CXCL8 are associated with risk of developing keratitis. The study also found relationships between SNPs and clinical measures of keratitis. The potential for ethnic differences in frequency of SNPs and their association with keratitis should be followed up using different populations.
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Affiliation(s)
- Nagaraju Konda
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
- Brien Holden Vision Institute, Sydney 2052, Australia
- School of Medical Sciences, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - Subhabrata Chakrabarti
- Brien Holden Eye Research Centre, L. V. Prasad Eye Institute, Hyderabad 500034, Telangana, India
| | - Prashant Garg
- The Cornea Institute, L. V. Prasad Eye Institute, Hyderabad, Telangana 500034, India
| | - Mark D. P. Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
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Wang Y, Cao C, Zhu Y, Fan H, Liu Q, Liu Y, Chen K, Wu Y, Liang S, Li M, Li L, Liu X, Zhang Y, Wu C, Lu G, Wu M. TREM2/β-catenin attenuates NLRP3 inflammasome-mediated macrophage pyroptosis to promote bacterial clearance of pyogenic bacteria. Cell Death Dis 2022; 13:771. [PMID: 36068223 PMCID: PMC9448748 DOI: 10.1038/s41419-022-05193-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 01/21/2023]
Abstract
Triggering receptors expressed on myeloid cells 2 (TREM2) is considered a protective factor to protect host from bacterial infection, while how it elicits this role is unclear. In the present study, we demonstrate that deficiency of triggering receptors expressed on myeloid cells 2 (TREM2) significantly enhanced macrophage pyroptosis induced by four common pyogenic bacteria including Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae, and Escherichia coli. TREM2 deficiency also decreased bacterial killing ratio of macrophage, while Caspase-1 or GSDMD inhibition promoted macrophage-mediated clearance to these bacteria. Further study demonstrated that the effect of TREM2 on macrophage pyroptosis and bacterial eradication mainly dependents on the activated status of NLRP3 inflammasome. Moreover, as the key downstream of TREM2, β-catenin phosphorylated at Ser675 by TREM2 signal and accumulated in nucleus and cytoplasm. β-catenin mediated the effect of TREM2 on NLRP3 inflammasome and macrophage pyroptosis by reducing NLRP3 expression, and inhibiting inflammasome complex assembly by interacting with ASC. Collectively, TREM2/β-catenin inhibits NLRP3 inflammasome to regulate macrophage pyroptosis, and enhances macrophage-mediated pyogenic bacterial clearance.
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Affiliation(s)
- Yi Wang
- grid.411866.c0000 0000 8848 7685Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Can Cao
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yanting Zhu
- grid.411866.c0000 0000 8848 7685Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Huifeng Fan
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Qiaojuan Liu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yiting Liu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Kang Chen
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yongjian Wu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Siping Liang
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Meiyu Li
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Lexi Li
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xi Liu
- grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yuanqing Zhang
- grid.12981.330000 0001 2360 039XSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
| | - Chenglin Wu
- grid.12981.330000 0001 2360 039XOrgan Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gen Lu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Minhao Wu
- grid.12981.330000 0001 2360 039XProgram of Infection and Immunity, Affiliated Guangzhou Women and Children’s Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China ,grid.12981.330000 0001 2360 039XKey Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XGuangdong Engineering & Technology Research Center for Disease-Model Animals, Sun Yat-sen University, Guangzhou, 510006 China
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Chen M, Rong R, Xia X. Spotlight on pyroptosis: role in pathogenesis and therapeutic potential of ocular diseases. J Neuroinflammation 2022; 19:183. [PMID: 35836195 PMCID: PMC9281180 DOI: 10.1186/s12974-022-02547-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 07/05/2022] [Indexed: 11/10/2022] Open
Abstract
Pyroptosis is a programmed cell death characterized by swift plasma membrane disruption and subsequent release of cellular contents and pro-inflammatory mediators (cytokines), including IL‐1β and IL‐18. It differs from other types of programmed cell death such as apoptosis, autophagy, necroptosis, ferroptosis, and NETosis in terms of its morphology and mechanism. As a recently discovered form of cell death, pyroptosis has been demonstrated to be involved in the progression of multiple diseases. Recent studies have also suggested that pyroptosis is linked to various ocular diseases. In this review, we systematically summarized and discussed recent scientific discoveries of the involvement of pyroptosis in common ocular diseases, including diabetic retinopathy, age-related macular degeneration, AIDS-related human cytomegalovirus retinitis, glaucoma, dry eye disease, keratitis, uveitis, and cataract. We also organized new and emerging evidence suggesting that pyroptosis signaling pathways may be potential therapeutic targets in ocular diseases, hoping to provide a summary of overall intervention strategies and relevant multi-dimensional evaluations for various ocular diseases, as well as offer valuable ideas for further research and development from the perspective of pyroptosis.
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Affiliation(s)
- Meini Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China.,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China. .,Hunan Key Laboratory of Ophthalmology, Changsha, 410008, Hunan, People's Republic of China. .,National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, 410008, Hunan, People's Republic of China.
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He M, Fan J, Zhou R, Gao G, Li R, Zuo Y, Li B, Li Y, Sun T. NLRP3/Caspase-1-Mediated Pyroptosis of Astrocytes Induced by Antipsychotics Is Inhibited by a Histamine H1 Receptor-Selective Agonist. Front Aging Neurosci 2022; 14:847561. [PMID: 35615587 PMCID: PMC9125084 DOI: 10.3389/fnagi.2022.847561] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 04/15/2022] [Indexed: 11/13/2022] Open
Abstract
Emerging data indicate that antipsychotic treatment causes brain volume loss and astrocyte death, but the mechanisms remain elusive. Pyroptosis, inflammatory cell death characterized by the formation of inflammatory bodies, increased expression of nod-like receptor proteins (NLRPs) such as NLRP3, and activation of caspases and gasdermin D (GSDMD) are largely associated with innate immunity, inflammation, and cell injury/death. However, the main effect of antipsychotics on astrocyte pyroptotic signaling and the molecular mechanisms remain obscure. In the present study, 72-h treatment with olanzapine, quetiapine, risperidone, or haloperidol significantly decreased the viability of astrocytes. Twenty-four hour treatment with olanzapine, quetiapine, risperidone, or haloperidol dose-dependently increased the protein expression of astrocytic NLRP3, NLRP6, caspase-1, caspase-4, and GSDMD. Co-treatment with a histamine H1 receptor agonist, 2-(3-trifluoromethylphenyl) histamine (FMPH), dose-dependently reduced the increased expression of NLRP3, caspase-1 and GSDMD induced by olanzapine, quetiapine, risperidone, or haloperidol. Moreover, olanzapine, quetiapine, risperidone, or haloperidol treatment induced pore formation in the membranes of astrocytes, and these effects were inhibited by FMPH co-treatment. Taken together, antipsychotic treatment activated astrocyte pyroptotic signaling, and these effects may be related to antipsychotic-induced astrocyte death. H1 receptor activation is an effective treatment strategy to suppress antipsychotic-induced astrocyte pyroptosis and inflammation.
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Affiliation(s)
- Meng He
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Jun Fan
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Ruqin Zhou
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Ruoxi Li
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - YuFeng Zuo
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Benben Li
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Yanmei Li
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan, China
- *Correspondence: Taolei Sun,
| | - Taolei Sun
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
- Yanmei Li,
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9
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Somayajulu M, Ekanayaka S, McClellan SA, Bessert D, Pitchaikannu A, Zhang K, Hazlett LD. Airborne Particulates Affect Corneal Homeostasis and Immunity. Invest Ophthalmol Vis Sci 2020; 61:23. [PMID: 32301974 PMCID: PMC7401652 DOI: 10.1167/iovs.61.4.23] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Purpose To determine the effects of airborne particulate matter (PM) <2.5 µm in vitro and on the normal and Pseudomonas aeruginosa (PA)-infected cornea. Methods An MTT viability assay tested the effects of PM2.5 on mouse corneal epithelial cells (MCEC) and human corneal epithelial cells (HCET). MCEC were tested for reactive oxygen species using a 2′,7′-dichlorodihydrofluorescein assay; RT-PCR determined mRNA levels of inflammatory and oxidative stress markers in MCEC (HMGB1, toll-like receptor 2, IL-1β, CXCL2, GPX1, GPX2, GR1, superoxide dismutase 2, and heme oxygenase 1) and HCET (high mobility group box 1, CXCL2, and IL-1β). C57BL/6 mice also were infected and after 6 hours, the PM2.5 was topically applied. Disease was graded by clinical score and evaluated by histology, plate count, myeloperoxidase assay, RT-PCR, ELISA, and Western blot. Results After PM2.5 (25–200 µg/mL), 80% to 90% of MCEC and HCET were viable and PM exposure increased reactive oxygen species in MCEC and mRNA expression levels for inflammatory and oxidative stress markers in mouse and human cells. In vivo, the cornea of PA+PM2.5 exposed mice exhibited earlier perforation over PA alone (confirmed histologically). In cornea, plate counts were increased after PA+PM2.5, whereas myeloperoxidase activity was significantly increased after PA+PM2.5 over other groups. The mRNA levels for several proinflammatory and oxidative stress markers were increased in the cornea in the PA+PM2.5 over other groups; protein levels were elevated for high mobility group box 1, but not toll-like receptor 4 or glutathione reductase 1. Uninfected corneas treated with PM2.5 did not differ from normal. Conclusions PM2.5 triggers reactive oxygen species, upregulates mRNA levels of oxidative stress, inflammatory markers, and high mobility group box 1 protein, contributing to perforation in PA-infected corneas.
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10
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Kay C, Wang R, Kirkby M, Man SM. Molecular mechanisms activating the NAIP-NLRC4 inflammasome: Implications in infectious disease, autoinflammation, and cancer. Immunol Rev 2020; 297:67-82. [PMID: 32729154 DOI: 10.1111/imr.12906] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 12/15/2022]
Abstract
Cytosolic innate immune sensing is a cornerstone of innate immunity in mammalian cells and provides a surveillance system for invading pathogens and endogenous danger signals. The NAIP-NLRC4 inflammasome responds to cytosolic flagellin, and the inner rod and needle proteins of the type 3 secretion system of bacteria. This complex induces caspase-1-dependent proteolytic cleavage of the proinflammatory cytokines IL-1β and IL-18, and the pore-forming protein gasdermin D, leading to inflammation and pyroptosis, respectively. Localized responses triggered by the NAIP-NLRC4 inflammasome are largely protective against bacterial pathogens, owing to several mechanisms, including the release of inflammatory mediators, liberation of concealed intracellular pathogens for killing by other immune mechanisms, activation of apoptotic caspases, caspase-7, and caspase-8, and expulsion of an entire infected cell from the mammalian host. In contrast, aberrant activation of the NAIP-NLRC4 inflammasome caused by de novo gain-of-function mutations in the gene encoding NLRC4 can lead to macrophage activation syndrome, neonatal enterocolitis, fetal thrombotic vasculopathy, familial cold autoinflammatory syndrome, and even death. Some of these clinical manifestations could be treated by therapeutics targeting inflammasome-associated cytokines. In addition, the NAIP-NLRC4 inflammasome has been implicated in the pathogenesis of colorectal cancer, melanoma, glioma, and breast cancer. However, no consensus has been reached on its function in the development of any cancer types. In this review, we highlight the latest advances in the activation mechanisms and structural assembly of the NAIP-NLRC4 inflammasome, and the functions of this inflammasome in different cell types. We also describe progress toward understanding the role of the NAIP-NLRC4 inflammasome in infectious diseases, autoinflammatory diseases, and cancer.
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Affiliation(s)
- Callum Kay
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Runli Wang
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Max Kirkby
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Si Ming Man
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
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11
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Lim RR, Wieser ME, Ganga RR, Barathi VA, Lakshminarayanan R, Mohan RR, Hainsworth DP, Chaurasia SS. NOD-like Receptors in the Eye: Uncovering Its Role in Diabetic Retinopathy. Int J Mol Sci 2020; 21:E899. [PMID: 32019187 PMCID: PMC7037099 DOI: 10.3390/ijms21030899] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 12/15/2022] Open
Abstract
Diabetic retinopathy (DR) is an ocular complication of diabetes mellitus (DM). International Diabetic Federations (IDF) estimates up to 629 million people with DM by the year 2045 worldwide. Nearly 50% of DM patients will show evidence of diabetic-related eye problems. Therapeutic interventions for DR are limited and mostly involve surgical intervention at the late-stages of the disease. The lack of early-stage diagnostic tools and therapies, especially in DR, demands a better understanding of the biological processes involved in the etiology of disease progression. The recent surge in literature associated with NOD-like receptors (NLRs) has gained massive attraction due to their involvement in mediating the innate immune response and perpetuating inflammatory pathways, a central phenomenon found in the pathogenesis of ocular diseases including DR. The NLR family of receptors are expressed in different eye tissues during pathological conditions suggesting their potential roles in dry eye, ocular infection, retinal ischemia, cataract, glaucoma, age-related macular degeneration (AMD), diabetic macular edema (DME) and DR. Our group is interested in studying the critical early components involved in the immune cell infiltration and inflammatory pathways involved in the progression of DR. Recently, we reported that NLRP3 inflammasome might play a pivotal role in the pathogenesis of DR. This comprehensive review summarizes the findings of NLRs expression in the ocular tissues with special emphasis on its presence in the retinal microglia and DR pathogenesis.
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Affiliation(s)
- Rayne R. Lim
- Ocular Immunology and Angiogenesis Lab, University of Missouri, Columbia, MO 652011, USA; (R.R.L.); (M.E.W.); (R.R.M.)
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 652011, USA
- Ophthalmology, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 652011, USA
| | - Margaret E. Wieser
- Ocular Immunology and Angiogenesis Lab, University of Missouri, Columbia, MO 652011, USA; (R.R.L.); (M.E.W.); (R.R.M.)
| | - Rama R. Ganga
- Surgery, University of Missouri, Columbia, MO 652011, USA;
| | | | | | - Rajiv R. Mohan
- Ocular Immunology and Angiogenesis Lab, University of Missouri, Columbia, MO 652011, USA; (R.R.L.); (M.E.W.); (R.R.M.)
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 652011, USA
- Ophthalmology, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 652011, USA
- Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO 652011, USA;
| | - Dean P. Hainsworth
- Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO 652011, USA;
| | - Shyam S. Chaurasia
- Ocular Immunology and Angiogenesis Lab, University of Missouri, Columbia, MO 652011, USA; (R.R.L.); (M.E.W.); (R.R.M.)
- Department of Biomedical Sciences, University of Missouri, Columbia, MO 652011, USA
- Ophthalmology, Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO 652011, USA
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Qu W, Wang Y, Wu Y, Liu Y, Chen K, Liu X, Zou Z, Huang X, Wu M. Triggering Receptors Expressed on Myeloid Cells 2 Promotes Corneal Resistance Against Pseudomonas aeruginosa by Inhibiting Caspase-1-Dependent Pyroptosis. Front Immunol 2018; 9:1121. [PMID: 29887864 PMCID: PMC5980993 DOI: 10.3389/fimmu.2018.01121] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 05/03/2018] [Indexed: 01/16/2023] Open
Abstract
Triggering receptors expressed on myeloid cells 2 (TREM2) is a novel cell surface receptor and functions as an immunomodulatory receptor in infectious diseases. In this study, we investigated the function and regulatory mechanism of TREM2 in Pseudomonas aeruginosa (P. aeruginosa) keratitis. We found that P. aeruginosa keratitis was more severe in Trem2−/− versus wild type C57BL/6 mice as indicated by the increased clinical scores, bacterial load, and cornea pathology. The exacerbated disease progression caused by TREM2 deficiency was associated with boosted activation of caspase-1 and subsequent pyroptosis as well as increased expression of IL-1β. In addition, blockage of pyroptosis by caspase-1 inhibitor not only recovered the severe cornea pathology developed in Trem2−/− mice but also restored the P. aeruginosa clearance suppressed by TREM2 deficiency. Our study demonstrated that TREM2 promotes host resistance against P. aeruginosa keratitis by inhibiting caspase-1-dependent pyroptosis, which provides new insights of TREM2-mediated anti-bacterial immunity.
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Affiliation(s)
- Wenting Qu
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Yi Wang
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Yongjian Wu
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Yiting Liu
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Kang Chen
- Department of Laboratory Medicine, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, China
| | - Xi Liu
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China
| | - Zhengyu Zou
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Xi Huang
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
| | - Minhao Wu
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangdong, China.,Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China.,Guangdong Engineering & Technology Research Center for Disease-Model Animals, Sun Yat-sen University, Guangzhou, China
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13
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Riquelme SA, Ahn D, Prince A. Pseudomonas aeruginosa and Klebsiella pneumoniae Adaptation to Innate Immune Clearance Mechanisms in the Lung. J Innate Immun 2018; 10:442-454. [PMID: 29617698 PMCID: PMC6785651 DOI: 10.1159/000487515] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 02/08/2018] [Accepted: 02/08/2018] [Indexed: 01/02/2023] Open
Abstract
Many different species of gram-negative bacteria are associated with infection in the lung, causing exacerbations of chronic obstructive pulmonary disease, cystic fibrosis (CF), and ventilator-associated pneumonias. These airway pathogens must adapt to common host clearance mechanisms that include killing by antimicrobial peptides, antibiotics, oxidative stress, and phagocytosis by leukocytes. Bacterial adaptation to the host is often evident phenotypically, with increased extracellular polysaccharide production characteristic of some biofilm-associated organisms. Given the relatively limited repertoire of bacterial strategies to elude airway defenses, it seems likely that organisms sharing the same ecological niche might also share common strategies to persistently infect the lung. In this review, we will highlight some of the major factors responsible for the adaptation of Pseudomonas aeruginosa to the lung, addressing how growth in biofilms enables persistent infection, relevant to, but not limited to, the pathogenesis of infection in CF. In contrast, we will discuss how carbapenem-resistant Klebsiella pneumoniae evade immune clearance, an organism often associated with ventilator-associated pneumonia and health-care-acquired pneumonias, but not a typical pathogen in CF.
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Affiliation(s)
| | | | - Alice Prince
- Department of Pediatrics, Columbia University Medical Center, New York, New York, USA
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