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Yi X, Song Y, Xu J, Wang L, Liu L, Huang D, Zhang L. NLRP10 promotes AGEs-induced NLRP1 and NLRP3 inflammasome activation via ROS/MAPK/NF-κB signaling in human periodontal ligament cells. Odontology 2024; 112:100-111. [PMID: 37043073 DOI: 10.1007/s10266-023-00813-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 04/03/2023] [Indexed: 04/13/2023]
Abstract
Diabetes mellitus (DM), characterized by production and accumulation of advanced glycation end products (AGEs), induces and promotes chronic inflammation in tissues, including periodontal tissue. Increasing amount of epidemiological and experimental evidence demonstrated that more extensive inflammatory reaction and bone resorption occurred in periodontal tissues in diabetic patients with periodontitis, which is speculated to be related to NLRP3 inflammasome. NLRP10 is the only NOD-like receptor protein lacking leucine-rich repeats, suggesting that NLRP10 may be a regulatory protein. The aim of this study was to investigate the regulatory role of NLRP10 on NLRP1 and NLRP3 inflammasome in human periodontal ligament cells (HPDLCs) under AGEs treatment. Expression of NLRP10 in HPDLCs stimulated with 100 ug/mL AGEs for 24 h was observed. Detection of TRIM31 is conducted, and in TRIM31-overexpressed HPDLCs, the interaction between NLRP10 with TRIM31 as well as NLRP10 with ubiquitination were explored by immunoprecipitation. Under AGEs stimulation, the activation of reactive oxidative stress (ROS) and inflammatory signaling pathway (NF-κB, MAPK pathway) was detected by biomedical microscope and western blot (WB), respectively. After stimulation with AGEs for 24 h with or without silencing NLRP10, inflammatory cytokines (IL-6 and IL-1β), NF-κB, MAPK pathway, ROS, and components of inflammasome were assessed. In HPDLCs, we found AGEs induced NLRP10 and inhibited TRIM31. TRIM31 overexpression significantly enhanced interaction between TRIM31 and NLRP10, then induced proteasomal degradation of NLRP10. Moreover, under AGEs stimulation, NLRP10 positively regulates NLRP1, NLRP3 inflammasomes by activating NF-κB, MAPK pathway, and increasing ROS, finally promoting the expression of inflammatory cytokines. Together, we, for the first time, confirmed that NLRP10 could promote inflammatory response induced by AGEs in HPDLCs via activation of NF-κB, and MAPK pathway and increasing ROS.
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Affiliation(s)
- Xiaowei Yi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Yao Song
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Jialei Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Liu Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Liu Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Dingming Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China
| | - Lan Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14# Third Section, Renmin Nan Road, Chengdu, 610041, China.
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2
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Zheng D, Mohapatra G, Kern L, He Y, Shmueli MD, Valdés-Mas R, Kolodziejczyk AA, Próchnicki T, Vasconcelos MB, Schorr L, Hertel F, Lee YS, Rufino MC, Ceddaha E, Shimshy S, Hodgetts RJ, Dori-Bachash M, Kleimeyer C, Goldenberg K, Heinemann M, Stettner N, Harmelin A, Shapiro H, Puschhof J, Chen M, Flavell RA, Latz E, Merbl Y, Abdeen SK, Elinav E. Epithelial Nlrp10 inflammasome mediates protection against intestinal autoinflammation. Nat Immunol 2023; 24:585-594. [PMID: 36941399 DOI: 10.1038/s41590-023-01450-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/06/2023] [Indexed: 03/23/2023]
Abstract
Unlike other nucleotide oligomerization domain-like receptors, Nlrp10 lacks a canonical leucine-rich repeat domain, suggesting that it is incapable of signal sensing and inflammasome formation. Here we show that mouse Nlrp10 is expressed in distal colonic intestinal epithelial cells (IECs) and modulated by the intestinal microbiome. In vitro, Nlrp10 forms an Apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC)-dependent, m-3M3FBS-activated, polyinosinic:polycytidylic acid-modulated inflammasome driving interleukin-1β and interleukin-18 secretion. In vivo, Nlrp10 signaling is dispensable during steady state but becomes functional during autoinflammation in antagonizing mucosal damage. Importantly, whole-body or conditional IEC Nlrp10 depletion leads to reduced IEC caspase-1 activation, coupled with enhanced susceptibility to dextran sodium sulfate-induced colitis, mediated by altered inflammatory and healing programs. Collectively, understanding Nlrp10 inflammasome-dependent and independent activity, regulation and possible human relevance might facilitate the development of new innate immune anti-inflammatory interventions.
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Affiliation(s)
- Danping Zheng
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gayatree Mohapatra
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Lara Kern
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Yiming He
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Merav D Shmueli
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Rafael Valdés-Mas
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | | | - Tomasz Próchnicki
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | | | - Lena Schorr
- Division of Cancer-Microbiome Research, German Cancer Research Center, Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Franziska Hertel
- Division of Cancer-Microbiome Research, German Cancer Research Center, Heidelberg, Germany
| | - Ye Seul Lee
- Division of Cancer-Microbiome Research, German Cancer Research Center, Heidelberg, Germany
| | | | - Emmanuelle Ceddaha
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Sandy Shimshy
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Ryan James Hodgetts
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Mally Dori-Bachash
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Christian Kleimeyer
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Kim Goldenberg
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Melina Heinemann
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Noa Stettner
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Alon Harmelin
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Hagit Shapiro
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Jens Puschhof
- Division of Cancer-Microbiome Research, German Cancer Research Center, Heidelberg, Germany
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
- Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA
| | - Eicke Latz
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Yifat Merbl
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel
| | - Suhaib K Abdeen
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel.
| | - Eran Elinav
- Systems Immunology Department, Weizmann Institute of Science, Rehovot, Israel.
- Division of Cancer-Microbiome Research, German Cancer Research Center, Heidelberg, Germany.
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3
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Infection and Immunity. Clin Immunol 2023. [DOI: 10.1016/b978-0-12-818006-8.00007-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Yu D, Feng Y, Jiang Z, Yan T, Fang K, Shi Y, Zhang J, Zhang S. The role of human antigen R (HuR) in modulating proliferation, senescence and radiosensitivity of skin cells. Exp Ther Med 2022; 24:566. [PMID: 35965840 PMCID: PMC9372994 DOI: 10.3892/etm.2022.11503] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 06/22/2022] [Indexed: 11/19/2022] Open
Abstract
The skin is the largest outermost organ of the human body. It is vulnerable to various damages, such as ionizing radiation. Exploration of proliferation, senescence and radiosensitivity of skin cells contributes to the development of medical and cosmetic countermeasures against skin aging and toward injury protection. Human antigen R (HuR) is one of the most widely studied RNA-binding proteins and serves an important role in stabilization of mRNA and regulation of the expression of the target genes. To investigate the role of HuR in modulating proliferation, senescence and radiosensitivity of skin cells, the present study performed an in vitro study using lentivirus-mediated overexpression or silencing of HuR in human keratinocyte HaCaT cells and human skin fibroblast WS1 cells. The results indicated that overexpression of HuR promoted proliferation, whereas downregulation of HuR inhibited proliferation of HaCaT and WS1 cells. Overexpression of HuR reduced apoptosis and senescence in skin cells. RNA-Seq of skin cells with HuR overexpression or knockdown identified 77 mRNAs positively or negatively correlated with HuR expression levels. In addition, silencing of HuR induced a significant increase in radiogenic reactive oxygen species after irradiation. Overexpression of HuR increased radiotolerance of HaCaT and WS1 cells. RNA immunoprecipitation coupled with RNA-Seq identified 14 mRNAs interacting with HuR upon radiation exposure. Overall, the findings of the present study illustrated the key role of HuR in modulating proliferation, senescence and radiosensitivity of skin cells providing a new therapeutic strategy for cosmetic treatments and to combat skin injury.
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Affiliation(s)
- Daojiang Yu
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Yahui Feng
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Zhiqiang Jiang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Tao Yan
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Kai Fang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Yuhong Shi
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Jie Zhang
- Radiation Medicine Department of Institute of Preventive Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Shuyu Zhang
- Laboratory of Radiation Medicine, West China School of Basic Medical Sciences and Forensic Medicine, Chengdu, Sichuan 610041, P.R. China
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Li X, Li S, Sun M, Yu Y, Zhang X, Xiang J, Li F. A newly identified NLR-like gene participates in bacteria and virus infection possibly through regulating hemocytes apoptosis in shrimp. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 132:104395. [PMID: 35288120 DOI: 10.1016/j.dci.2022.104395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
The nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) play important roles in innate immunity. Previously, we identified an NLR-like gene, LvNLRPL1, and found that it participated in Vibrio infection and regulated hemocytes apoptosis in the Pacific whiteleg shrimp Litopenaeus vannamei. However, it is still unclear whether other NLR-like genes exist in shrimp and how they function during virus infection. In the present study, a novel NLR-like gene (LvNLRPL2) was identified and functionally characterized in L. vannamei. LvNLRPL2 was highly expressed in hemocytes and responsive to both Vibrio parahaemolyticus and white spot syndrome virus (WSSV) infection. Knockdown of LvNLRPL2 could markedly increase the proliferation of Vibrio and the mortality of shrimp infected with V. parahaemolyticus, whereas inhibit in vivo WSSV propagation in shrimp, indicating its distinct roles during Vibrio and WSSV infection. After LvNLRPL2 knockdown, the apoptotic rate of hemocytes increased, and the expression levels of LvCaspase 2, 3 and 5 were significantly up-regulated. In addition, LvNLRPL2 could form a hetero-dimer with LvNLRPL1 through their NACHT domains. These results suggest that LvNLRPL2 might resist bacterial infection while promote WSSV propagation by forming hetero-dimer with LvNLRPL1 and then inhibiting apoptosis of hemocytes. These data will be helpful for understanding the functions of NLR-like genes and their regulation mechanisms in crustaceans.
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Affiliation(s)
- Xuechun Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shihao Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Mingzhe Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yang Yu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiaojun Zhang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jianhai Xiang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Fuhua Li
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, China.
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6
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Liu J, Zhang H, Su Y, Zhang B. Application and prospect of targeting innate immune sensors in the treatment of autoimmune diseases. Cell Biosci 2022; 12:68. [PMID: 35619184 PMCID: PMC9134593 DOI: 10.1186/s13578-022-00810-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/09/2022] [Indexed: 12/22/2022] Open
Abstract
Dysregulation of auto-reactive T cells and autoantibody-producing B cells and excessive inflammation are responsible for the occurrence and development of autoimmune diseases. The suppression of autoreactive T cell activation and autoantibody production, as well as inhibition of inflammatory cytokine production have been utilized to ameliorate autoimmune disease symptoms. However, the existing treatment strategies are not sufficient to cure autoimmune diseases since patients can quickly suffer a relapse following the end of treatments. Pattern recognition receptors (PRRs), including Toll-like receptors (TLRs), Nod-like receptors (NLRs), RIG-I like receptors (RLRs), C-type lectin receptors (CLRs) and various nucleic acid sensors, are expressed in both innate and adaptive immune cells and are involved in the development of autoimmune diseases. Here, we have summarized advances of PRRs signaling pathways, association between PRRs and autoimmune diseases, application of inhibitors targeting PRRs and the corresponding signaling molecules relevant to strategies targeting autoimmune diseases. This review emphasizes the roles of different PRRs in activating both innate and adaptive immunity, which can coordinate to trigger autoimmune responses. The review may also prompt the formulation of novel ideas for developing therapeutic strategies against autoimmune diseases by targeting PRRs-related signals.
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Affiliation(s)
- Jun Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Hui Zhang
- NHC Key Laboratory of AIDS Immunology (China Medical University), National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China. .,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Basic and Translational Research Laboratory of Immune Related Diseases, Xi'an, 710061, Shaanxi, China.
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Nod-Like Receptors in Host Defence and Disease at the Epidermal Barrier. Int J Mol Sci 2021; 22:ijms22094677. [PMID: 33925158 PMCID: PMC8124564 DOI: 10.3390/ijms22094677] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/18/2021] [Accepted: 04/27/2021] [Indexed: 12/16/2022] Open
Abstract
The nucleotide-binding domain and leucine-rich-repeat-containing family (NLRs) (sometimes called the NOD-like receptors, though the family contains few bona fide receptors) are a superfamily of multidomain-containing proteins that detect cellular stress and microbial infection. They constitute a critical arm of the innate immune response, though their functions are not restricted to pathogen recognition and members engage in controlling inflammasome activation, antigen-presentation, transcriptional regulation, cell death and also embryogenesis. NLRs are found from basal metazoans to plants, to zebrafish, mice and humans though functions of individual members can vary from species to species. NLRs also display highly wide-ranging tissue expression. Here, we discuss the importance of NLRs to the immune response at the epidermal barrier and summarise the known role of individual family members in the pathogenesis of skin disease.
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Singh DP, Begum R, Kaur G, Bagam P, Kambiranda D, Singh R, Batra S. E-cig vapor condensate alters proteome and lipid profiles of membrane rafts: impact on inflammatory responses in A549 cells. Cell Biol Toxicol 2021; 37:773-793. [PMID: 33469865 DOI: 10.1007/s10565-020-09573-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 11/12/2020] [Indexed: 01/14/2023]
Abstract
Electronic cigarettes (e-cigs) are battery-operated heating devices that aerosolize e-liquid, typically containing nicotine and several other chemicals, which is then inhaled by a user. Over the past decade, e-cigs have gained immense popularity among both smokers and non-smokers. One reason for this is that they are advertised as a safe alternative to conventional cigarettes. However, the recent reports of e-cig use associated lung injury have ignited a considerable debate about the relative harm and benefits of e-cigs. The number of reports about e-cig-induced inflammation and pulmonary health is increasing as researchers seek to better understand the effects of vaping on human health. In line with this, we investigated the molecular events responsible for the e-cig vapor condensate (ECVC)-mediated inflammation in human lung adenocarcinoma type II epithelial cells (A549). In an attempt to limit the variables caused by longer ingredient lists of flavored e-cigs, tobacco-flavored ECVC (TF-ECVC±nicotine) was employed for this study. Interestingly, we observed significant upregulation of cytokines and chemokines (IL-6, IL-8, and MCP-1) in A549 cells following a 48 h TF-ECVC challenge. Furthermore, there was a significant increase in the expression of pattern recognition receptors TLR-4 and NOD-1, lipid raft-associated protein caveolin-1, and transcription factor NF-кB in TF-ECVC with and/or without nicotine-challenged lung epithelial cells. Our results further demonstrate the harboring of TLR-4 and NOD-1 in the caveolae of TF-ECVC-challenged A549 cells. Proteomic and lipidomic analyses of lipid raft fractions from control and challenged cells revealed a distinct protein and lipid profile in TF-ECVC (w/wo nicotine)-exposed A549 cells. Interestingly, the inflammatory effects of TF-ECVC (w/wo nicotine) were inhibited following the caveolin-1 knockdown, thus demonstrating a critical role of caveolae raft-mediated signaling in eliciting inflammatory responses upon TF-ECVC challenge. Graphical Abstract Graphical Abstract.
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Affiliation(s)
- Dhirendra Pratap Singh
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, 129 Health Research Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Rizwana Begum
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, 129 Health Research Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Gagandeep Kaur
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, 129 Health Research Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Prathyusha Bagam
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, 129 Health Research Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Devaiah Kambiranda
- Southern University Agriculture Research and Extension Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Rakesh Singh
- Translational Science Laboratory, FSU College of Medicine, Tallahassee, FL, 32309, USA
| | - Sanjay Batra
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, 129 Health Research Center, Southern University and A&M College, Baton Rouge, LA, 70813, USA.
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Enhanced Wound Healing- and Inflammasome-Associated Gene Expression in TNFAIP3-Interacting Protein 1- (TNIP1-) Deficient HaCaT Keratinocytes Parallels Reduced Reepithelialization. Mediators Inflamm 2020; 2020:5919150. [PMID: 32377162 PMCID: PMC7191359 DOI: 10.1155/2020/5919150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/04/2020] [Accepted: 03/31/2020] [Indexed: 01/06/2023] Open
Abstract
TNIP1 protein is a widely expressed, cytoplasmic inhibitor of inflammatory signaling initiated by membrane receptors such as TLRs which recognize pathogen-associated and damage-associated molecular patterns (PAMPs and DAMPs). Keratinocyte TNIP1 deficiency sensitizes cells to PAMPs and DAMPs promoting hyperresponsive expression and secretion of cytokine markers (e.g., IL-8 and IL-6) relevant to cases of chronic inflammation, like psoriasis, where TNIP1 deficiency has been reported. Here, we examined the impact of TNIP1 deficiency on gene expression and cellular responses (migration and viability) relevant to acute inflammation as typically occurs in wound healing. Using siRNA-mediated TNIP1 expression knockdown in cultured HaCaT keratinocytes, we investigated TNIP1 deficiency effects on signaling downstream of TLR3 agonism with low-concentration poly (I:C), a representative PAMP/DAMP. The combination of TNIP1 knockdown and PAMP/DAMP signaling disrupted expression of specific keratinocyte differentiation markers (e.g., transglutaminase 1 and involucrin). These same conditions promoted synergistically increased expression of wound-associated markers (e.g., S100A8, TGFβ, and CCN2) suggesting potential benefit of increased inflammatory response from reduced TNIP1 protein. Unexpectedly, poly (I:C) challenge of TNIP1-deficient cells restricted reepithelialization and reduced cell viability. In these cells, there was not only increased expression for genes associated with inflammasome assembly (e.g., ASC, procaspase 1) but also for A20, a TNIP1 partner protein that represses cell-death signaling. Despite this possibly compensatory increase in A20 mRNA, there was a decrease in phospho-A20 protein, the form necessary for quenching inflammation. Hyperresponsiveness to poly (I:C) in TNIP1-deficient keratinocytes was in part mediated through p38 and JNK pathways. Taken together, we conclude that TNIP1 deficiency promotes enhanced expression of factors associated with promoting wound healing. However, the coupled, increased potential priming of the inflammasome and reduced compensatory activity of A20 has a net negative effect on overall cell recovery potential manifested by poor reepithelialization and viability. These findings suggest a previously unrecognized role for TNIP1 protein in limiting inflammation during successful progression through early wound healing stages.
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10
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Li ZG, Shui SF, Han XW, Yan L. NLRP10 ablation protects against ischemia/reperfusion-associated brain injury by suppression of neuroinflammation. Exp Cell Res 2020; 389:111912. [PMID: 32084391 DOI: 10.1016/j.yexcr.2020.111912] [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: 09/25/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 12/19/2022]
Abstract
Ischemic stroke leads to neuronal cell death and induces a cascade of inflammatory signals that results in secondary brain damage. Although constant efforts to develop therapeutic strategies and to reveal the molecular mechanism resulting in the physiopathology of this disease, much still remains unclear. Membrane-bound Toll-like receptors (TLRs) and cytosolic nucleotide binding oligomerization domain (NOD)-like receptors (NLRs) are two major families of pattern recognition receptors that initiate pro-inflammatory signaling pathways. In the present study, we explored the role of NLRP10 in regulating inflammatory responses in acute ischemic stroke using the wild type (WT) and NLRP10 knockout (KO) mice by inducing middle cerebral artery occlusion/reperfusion (MCAO) injuries. The study first showed that NLRP10 was over-expressed in the ischemic penumbra of WT mice. Then, the brain infarct volume was significantly decreased, and the moving activity was improved post-MCAO in mice with NLRP10 knockout. Apoptosis was also alleviated by NLRP10-knockout, as evidenced by the decreased number of TUNEL-staining cells. Further, NLRP10 deficiency attenuated the activation of glia cells in hippocampus of mice with MCAO operation. NLRP10 inhibition ameliorated the levels of inflammatory factors in peripheral blood serum and hippocampus of mice after stroke. The activation of toll-like receptor (TLR)-4/nuclear factor-κB (NF-κB) signaling pathways was markedly suppressed by NLRP10 ablation in mice after MCAO treatment. Importantly, inflammasome, including NLRP12, ASC and Caspase-1, induced by MCAO in hippocampus of mice was clearly impeded by the loss of NLRP10. The results above were mainly verified in LPS-incubated astrocytes in the absence of NLRP10. Correspondingly, in LPS-treated astrocytes, NLRP10 knockout-reduced inflammation via impairing TLR-4/NF-κB and NLRP12/ASC/Caspase-1 pathways was evidently restored by over-expressing NLRP10. Therefore, the results above indicated an essential role of NLRP10 in regulating ischemic stroke, presenting NLRP10 as a promising target to protect human against stroke.
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Affiliation(s)
- Zhi-Guo Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China.
| | - Shao-Feng Shui
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
| | - Xin-Wei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
| | - Lei Yan
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, Henan Province, 450052, China
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11
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Mirza N, Sowa AS, Lautz K, Kufer TA. NLRP10 Affects the Stability of Abin-1 To Control Inflammatory Responses. THE JOURNAL OF IMMUNOLOGY 2018; 202:218-227. [PMID: 30510071 DOI: 10.4049/jimmunol.1800334] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 10/29/2018] [Indexed: 12/24/2022]
Abstract
NOD-like receptors (NLR) are critical regulators of innate immune signaling. The NLR family consists of 22 human proteins with a conserved structure containing a central oligomerization NACHT domain, an N-terminal interaction domain, and a variable number of C-terminal leucine-rich repeats. Most NLR proteins function as cytosolic pattern recognition receptors with activation of downstream inflammasome signaling, NF-κB, or MAPK activation. Although NLRP10 is the only NLR protein lacking the leucine rich repeats, it has been implicated in multiple immune pathways, including the regulation of inflammatory responses toward Leishmania major and Shigella flexneri infection. In this study, we identify Abin-1, a negative regulator of NF-κB, as an interaction partner of NLRP10 that binds to the NACHT domain of NLRP10. Using S. flexneri as an infection model in human epithelial cells, our work reveals a novel function of NLRP10 in destabilizing Abin-1, resulting in enhanced proinflammatory signaling. Our data give insight into the molecular mechanism underlying the function of NLRP10 in innate immune responses.
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Affiliation(s)
- Nora Mirza
- Institute of Nutritional Medicine, University of Hohenheim, 70593 Stuttgart, Germany; and
| | - Anna S Sowa
- Institute of Nutritional Medicine, University of Hohenheim, 70593 Stuttgart, Germany; and
| | - Katja Lautz
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, 50931 Cologne, Germany
| | - Thomas A Kufer
- Institute of Nutritional Medicine, University of Hohenheim, 70593 Stuttgart, Germany; and
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12
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Crosstalk between gut microbiota and Sirtuin-3 in colonic inflammation and tumorigenesis. Exp Mol Med 2018; 50:1-11. [PMID: 29650970 PMCID: PMC5938040 DOI: 10.1038/s12276-017-0002-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/19/2017] [Accepted: 10/24/2017] [Indexed: 11/23/2022] Open
Abstract
Colorectal cancer (CRC) is a disease involving a variety of genetic and environmental factors. Sirtuin-3 (Sirt3) is expressed at a low level in cancer tissues of CRC, but it is unclear how Sirt3 modulates colonic tumorigenesis. In this study, we found that gut microbiota play a central role in the resistance to CRC tumor formation in wild-type (WT) mice through APC (Adenomatous Polyposis Coli)-mutant mouse microbiota transfer via Wnt signaling. We also found that Sirt3-deficient mice were hypersusceptible to colonic inflammation and tumor development through altered intestinal integrity and p38 signaling, respectively. Furthermore, susceptibility to colorectal tumorigenesis was aggravated by initial commensal microbiota deletion via Wnt signaling. Mice with Sirt3-deficient microbiota transfer followed by chemically induced colon tumorigenesis had low Sirt3 expression compared to WT control microbiome transfer, mainly due to a decrease in Escherichia/Shigella, as well as an increase in Lactobacillus reuteri and Lactobacillus taiwanensis. Collectively, our data revealed that Sirt3 is an anti-inflammatory and tumor-suppressing gene that interacts with the gut microbiota during colon tumorigenesis. Boosting specific beneficial bacteria in the gut may enhance expression levels of a tumor-suppressing gene in colorectal cancer (CRC). Both genetic factors and the bacteria present in the gut play vital roles in CRC development. However, it is unclear exactly how genes interact with the bacteria to affect tumor growth. Man-tian Mi and co-workers at the Third Military Medical University in Chongqing, China, examined the role of a gene called Sirt-3 in CRC development. Mice lacking the Sirt-3 gene suffered severe chronic inflammation and developed tumors due to altered signalling pathways and reduced intestinal integrity. Further, the guts of the mice harboured more pathogenic bacteria than wild-type mice. The team also found lower levels of two key types of beneficial bacteria that would ordinarily prevent reduced Sirt-3 expression.
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13
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Singh DP, Kaur G, Bagam P, Pinkston R, Batra S. Membrane microdomains regulate NLRP10- and NLRP12-dependent signalling in A549 cells challenged with cigarette smoke extract. Arch Toxicol 2018; 92:1767-1783. [PMID: 29623357 DOI: 10.1007/s00204-018-2185-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 03/13/2018] [Indexed: 12/22/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is predicted to become the third leading cause of death and disability worldwide by 2030; with cigarette smoking (active or passive) being one of the chief cause of its occurrence. Cigarette smoke exposure has been found to result in excessive inflammation and tissue injury, which might lead to COPD, although the exact pathophysiology of the disease remains elusive. While previous studies have demonstrated the role of membrane-bound Toll-like receptors (TLRs) in cigarette smoke (CS)-induced inflammation, scant information is available about the role of cytosolic NOD-like receptors (NLRs) in regulating CS-mediated inflammatory responses. Thus, we investigated the role of NLRP10 and NLRP12 in regulating inflammatory responses in human alveolar type II epithelial cells (A549) and human monocytic cells (THP-1) in response to a challenge with cigarette smoke extract (CSE). We observed CSE-mediated increase in caspase-1 activity; production of IL-1β and IL-18; and expression of NLRP10 and NLRP12 in A549 and THP-1 cells. Interestingly, immunofluorescence imaging results demonstrated an increase in the membrane recruitment of NLRP10 and NLRP12 proteins in CSE-challenged A549 cells. We also observed an increase in the expression of lipid raft proteins (caveolin-1, caveolin-2, and flotillin-1) and an induction of lipid raft assembly following CSE-exposure in A549 cells. Lipid rafts are cholesterol-rich membrane microdomains well known to act as harbours for signalling molecules. Here we demonstrate the recruitment of NLRP10 and NLRP12 in lipid raft entities as well as the interaction of NLRP12 with the lipid raft protein caveolin-1 in CSE-challenged A549 cells. Furthermore, enrichment of lipid raft entities with poly-unsaturated fatty acids (PUFA) rescued A549 cells from CSE-mediated membrane recruitment of NLRP10 and NLRP12, and also from inflammatory responses and inflammasome activation. Enrichment of membrane microdomains with PUFA was able to reverse filipin (chemical agent used for disrupting lipid rafts)-mediated enhanced inflammation in CSE-challenged A549 cells. Overall, our findings unveil a novel mechanism by identifying an important role of membrane microdomains (lipid rafts) in regulating CSE-induced inflammation and NLRP10/NLRP12-dependent signalling in A549 cells.
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Affiliation(s)
- Dhirendra P Singh
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Gagandeep Kaur
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Prathyusha Bagam
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Rakeysha Pinkston
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Sanjay Batra
- Laboratory of Pulmonary Immuno-toxicology, Environmental Toxicology Department, Southern University and A&M College, Baton Rouge, LA, 70813, USA. .,Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, USA.
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14
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Vacca M, Böhme J, Zambetti LP, Khameneh HJ, Paleja BS, Laudisi F, Ho AWS, Neo K, Leong KWK, Marzuki M, Lee B, Poidinger M, Santambrogio L, Tsenova L, Zolezzi F, De Libero G, Singhal A, Mortellaro A. NLRP10 Enhances CD4 + T-Cell-Mediated IFNγ Response via Regulation of Dendritic Cell-Derived IL-12 Release. Front Immunol 2017; 8:1462. [PMID: 29163529 PMCID: PMC5673625 DOI: 10.3389/fimmu.2017.01462] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/19/2017] [Indexed: 11/13/2022] Open
Abstract
NLRP10 is a nucleotide-binding oligomerization domain-like receptor that functions as an intracellular pattern recognition receptor for microbial products. Here, we generated a Nlrp10-/- mouse to delineate the role of NLRP10 in the host immune response and found that Nlrp10-/- dendritic cells (DCs) elicited sub-optimal IFNγ production by antigen-specific CD4+ T cells compared to wild-type (WT) DCs. In response to T-cell encounter, CD40 ligation or Toll-like receptor 9 stimulation, Nlrp10-/- DCs produced low levels of IL-12, due to a substantial decrease in NF-κB activation. Defective IL-12 production was also evident in vivo and affected IFNγ production by CD4+ T cells. Upon Mycobacterium tuberculosis (Mtb) infection, Nlrp10-/- mice displayed diminished T helper 1-cell responses and increased bacterial growth compared to WT mice. These data indicate that NLRP10-mediated IL-12 production by DCs is critical for IFNγ induction in T cells and contributes to promote the host defense against Mtb.
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Affiliation(s)
- Maurizio Vacca
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Julia Böhme
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Lia Paola Zambetti
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Hanif Javanmard Khameneh
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Bhairav S Paleja
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Federica Laudisi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Adrian W S Ho
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Kurt Neo
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Keith Weng Kit Leong
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Mardiana Marzuki
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Bernett Lee
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Michael Poidinger
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Laura Santambrogio
- Department of Pathology, Albert Einstein College of Medicine, New York, NY, United States
| | - Liana Tsenova
- Department of Biological Sciences, New York City College of Technology, Brooklyn, NY, United States
| | - Francesca Zolezzi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore
| | - Gennaro De Libero
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Department of Biomedicine, University of Basel and University Hospital Basel, Basel, Switzerland
| | - Amit Singhal
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Alessandra Mortellaro
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (ASTAR), Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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15
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Clay GM, Valadares DG, Graff JW, Ulland TK, Davis RE, Scorza BM, Zhanbolat BS, Chen Y, Sutterwala FS, Wilson ME. An Anti-Inflammatory Role for NLRP10 in Murine Cutaneous Leishmaniasis. THE JOURNAL OF IMMUNOLOGY 2017; 199:2823-2833. [PMID: 28931602 DOI: 10.4049/jimmunol.1500832] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/10/2017] [Indexed: 12/30/2022]
Abstract
The role of the nucleotide-binding domain and leucine-rich repeat containing receptor NLRP10 in disease is incompletely understood. Using three mouse strains lacking the gene encoding NLRP10, only one of which had a coincidental mutation in DOCK8, we documented a role for NLRP10 as a suppressor of the cutaneous inflammatory response to Leishmania major infection. There was no evidence that the enhanced local inflammation was due to enhanced inflammasome activity. NLRP10/DOCK8-deficient mice harbored lower parasite burdens at the cutaneous site of inoculation compared with wild-type controls, whereas NLRP10-deficient mice and controls had similar parasite loads, suggesting that DOCK8 promotes local growth of parasites in the skin, whereas NLRP10 does not. NLRP10-deficient mice developed vigorous adaptive immune responses, indicating that there was not a global defect in the development of Ag-specific cytokine production. Bone marrow chimeras showed that the anti-inflammatory role of NLRP10 was mediated by NLRP10 expressed in resident cells in the skin rather than by bone marrow-derived cells. These data suggest a novel role for NLRP10 in the resolution of local inflammatory responses during L. major infection.
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Affiliation(s)
- Gwendolyn M Clay
- Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, IA 52242
| | - Diogo G Valadares
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242
| | - Joel W Graff
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242.,Veterans Affairs Medical Center, Iowa City, IA 52246
| | - Tyler K Ulland
- Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, IA 52242
| | - Richard E Davis
- Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242; and
| | - Breanna M Scorza
- Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242; and
| | | | - Yani Chen
- Department of Internal Medicine, University of Iowa, Iowa City, IA 52242
| | - Fayyaz S Sutterwala
- Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, IA 52242.,Department of Internal Medicine, University of Iowa, Iowa City, IA 52242.,Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242; and
| | - Mary E Wilson
- Interdisciplinary Program in Molecular and Cellular Biology, University of Iowa, Iowa City, IA 52242; .,Department of Internal Medicine, University of Iowa, Iowa City, IA 52242.,Veterans Affairs Medical Center, Iowa City, IA 52246.,Interdisciplinary Program in Immunology, University of Iowa, Iowa City, IA 52242; and.,Department of Microbiology, University of Iowa, Iowa City, IA 52242
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16
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Lee SJ, Choi BK. Involvement of NLRP10 in IL-1α induction of oral epithelial cells by periodontal pathogens. Innate Immun 2017; 23:569-577. [PMID: 28766990 DOI: 10.1177/1753425917722610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This study investigated the pathogenesis of periodontitis and the role of nucleotide-binding oligomerization domain-like receptor protein 10 (NLRP10). The human oral epithelial cell line HOK-16B was infected with two periodontal pathogens, Tannerella forsythia and Fusobacterium nucleatum, at various MOIs. RT-PCR and immunoblotting demonstrated that infection increased mRNA and protein expression of NLRP10, respectively. The siRNA-mediated NLRP10 knockdown significantly reduced IL-1α expression and secretion. Both bacteria induced phosphorylation of ERK, JNK and p38 MAP kinases in HOK-16B cells. NLRP10 knockdown impaired ERK phosphorylation only. ERK inhibition significantly decreased the expression of T. forsythia- and F. nucleatum-induced IL-1α. Our data suggest that NLRP10 is involved in activating the ERK signalling pathway in HOK-16B cells infected with T. forsythia and F. nucleatum. This pathway likely augments the pro-inflammatory cytokine IL-1α levels, which may play a critical role in periodontitis.
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Affiliation(s)
- Seok-Joo Lee
- 1 Department of Oral Microbiology and Immunology, School of Dentistry, Seoul National University, Seoul, Korea
| | - Bong-Kyu Choi
- 1 Department of Oral Microbiology and Immunology, School of Dentistry, Seoul National University, Seoul, Korea
- 2 Dental Research Institute, Seoul National University, Seoul, Korea
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17
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Janowski AM, Colegio OR, Hornick EE, McNiff JM, Martin MD, Badovinac VP, Norian LA, Zhang W, Cassel SL, Sutterwala FS. NLRC4 suppresses melanoma tumor progression independently of inflammasome activation. J Clin Invest 2016; 126:3917-3928. [PMID: 27617861 DOI: 10.1172/jci86953] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 08/02/2016] [Indexed: 01/05/2023] Open
Abstract
Members of the NLR family can assemble inflammasome complexes with the adaptor protein ASC and caspase-1 that result in the activation of caspase-1 and the release of IL-1β and IL-18. Although the NLRC4 inflammasome is known to have a protective role in tumorigenesis, there is an increased appreciation for the inflammasome-independent actions of NLRC4. Here, we utilized a syngeneic subcutaneous murine model of B16F10 melanoma to explore the role of NLRC4 in tumor suppression. We found that NLRC4-deficient mice exhibited enhanced tumor growth that was independent of the inflammasome components ASC and caspase-1. Nlrc4 expression was critical for cytokine and chemokine production in tumor-associated macrophages and was necessary for the generation of protective IFN-γ-producing CD4+ and CD8+ T cells. Tumor progression was diminished when WT or caspase-1-deficient, but not NLRC4-deficient, macrophages were coinjected with B16F10 tumor cells in NLRC4-deficient mice. Finally, examination of human primary melanomas revealed the extensive presence of NLRC4+ tumor-associated macrophages. In contrast, there was a paucity of NLRC4+ tumor-associated macrophages observed in human metastatic melanoma, supporting the concept that NLRC4 expression controls tumor growth. These results reveal a critical role for NLRC4 in suppressing tumor growth in an inflammasome-independent manner.
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18
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Tsigelny IF, Kouznetsova VL, Lian N, Kesari S. Molecular mechanisms of OLIG2 transcription factor in brain cancer. Oncotarget 2016; 7:53074-53101. [PMID: 27447975 PMCID: PMC5288170 DOI: 10.18632/oncotarget.10628] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/03/2016] [Indexed: 12/13/2022] Open
Abstract
Oligodendrocyte lineage transcription factor 2 (OLIG2) plays a pivotal role in glioma development. Here we conducted a comprehensive study of the critical gene regulatory networks involving OLIG2. These include the networks responsible for OLIG2 expression, its translocation to nucleus, cell cycle, epigenetic regulation, and Rho-pathway interactions. We described positive feedback loops including OLIG2: loops of epigenetic regulation and loops involving receptor tyrosine kinases. These loops may be responsible for the prolonged oncogenic activity of OLIG2. The proposed schemes for epigenetic regulation of the gene networks involving OLIG2 are confirmed by patient survival (Kaplan-Meier) curves based on the cancer genome atlas (TCGA) datasets. Finally, we elucidate the Coherent-Gene Modules (CGMs) networks-framework of OLIG2 involvement in cancer. We showed that genes interacting with OLIG2 formed eight CGMs having a set of intermodular connections. We showed also that among the genes involved in these modules the most connected hub is EGFR, then, on lower level, HSP90 and CALM1, followed by three lower levels including epigenetic genes KDM1A and NCOR1. The genes on the six upper levels of the hierarchy are involved in interconnections of all eight CGMs and organize functionally defined gene-signaling subnetworks having specific functions. For example, CGM1 is involved in epigenetic control. CGM2 is significantly related to cell proliferation and differentiation. CGM3 includes a number of interconnected helix-loop-helix transcription factors (bHLH) including OLIG2. Many of these TFs are partially controlled by OLIG2. The CGM4 is involved in PDGF-related: angiogenesis, tumor cell proliferation and differentiation. These analyses provide testable hypotheses and approaches to inhibit OLIG2 pathway and relevant feed-forward and feedback loops to be interrogated. This broad approach can be applied to other TFs.
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Affiliation(s)
- Igor F. Tsigelny
- Department of Neurosciences, University of California San Diego, La Jolla, 92093-0752, CA, USA
- San Diego Supercomputer Center, University of California San Diego, La Jolla, 92093-0505, CA, USA
- Moores Cancer Center, University of California San Diego, La Jolla, 92093, CA, USA
| | - Valentina L. Kouznetsova
- San Diego Supercomputer Center, University of California San Diego, La Jolla, 92093-0505, CA, USA
- Moores Cancer Center, University of California San Diego, La Jolla, 92093, CA, USA
| | - Nathan Lian
- REHS, San Diego Supercomputer Center, University of California San Diego, La Jolla, 92093-0505, CA, USA
| | - Santosh Kesari
- John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, 90404, CA, USA
- Pacific Neuroscience Institute at Providence Saint John's Health Center, Santa Monica, 90404, CA, USA
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19
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Damm A, Giebeler N, Zamek J, Zigrino P, Kufer TA. Epidermal NLRP10 contributes to contact hypersensitivity responses in mice. Eur J Immunol 2016; 46:1959-69. [PMID: 27221772 DOI: 10.1002/eji.201646401] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/07/2016] [Accepted: 05/20/2016] [Indexed: 12/17/2022]
Abstract
The nucleotide binding and oligomerization domain-like receptor (NLR) protein NLRP10 is highly expressed in the epidermis and contributes to cell-autonomous responses against invasive bacteria. To investigate the role of NLRP10 in inflammatory responses of the skin we analyzed the effect of full-body and keratinocyte-specific depletion of NLRP10 in croton oil-induced irritant contact dermatitis (ICD) and 1-fluoro-2,4-dinitrobenzene (DNFB)-induced contact hypersensitivity (CHS) in mice. Nlrp10(-/-) mice were phenotypically normal and skin repair after wounding was not affected by lack of NLRP10. Similarly, we did not detect a contribution of NLRP10 to the ICD response induced by croton oil. In contrast, Nlrp10(-/-) mice showed significantly reduced inflammation in the DNFB-induced CHS response as compared to control animals. Microscopic analysis revealed significantly reduced numbers of CD4(+) and CD8(+) T cells in the infiltrates of animals lacking NLRP10 expression after CHS challenge. Epidermis-specific deletion of Nlrp10 by keratin-14 promotor driven Cre-recombinase was sufficient to account for this phenotype, although lymphocyte recruitment seemed to be unaltered in animals lacking NLRP10 expression in keratinocytes. Taken together, we provide evidence that NLRP10 contributes to T-cell-mediated inflammatory responses in the skin and highlight a physiological role of NLRP10 in epidermal keratinocytes.
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Affiliation(s)
- Anna Damm
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, Cologne, Germany
| | - Nives Giebeler
- Department of Dermatology and Venerology, University of Cologne, Cologne, Germany
| | - Jan Zamek
- Department of Dermatology and Venerology, University of Cologne, Cologne, Germany
| | - Paola Zigrino
- Department of Dermatology and Venerology, University of Cologne, Cologne, Germany
| | - Thomas A Kufer
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, Cologne, Germany
- Institute of Nutritional Medicine, Department of Immunology, University of Hohenheim, Stuttgart, Germany
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20
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Anti-hepatitis B virus effect of matrine-type alkaloid and involvement of p38 mitogen-activated protein kinase and tumor necrosis factor receptor-associated factor 6. Virus Res 2016; 215:104-13. [DOI: 10.1016/j.virusres.2015.12.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/06/2015] [Accepted: 12/07/2015] [Indexed: 12/12/2022]
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21
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Tervaniemi MH, Katayama S, Skoog T, Siitonen HA, Vuola J, Nuutila K, Sormunen R, Johnsson A, Linnarsson S, Suomela S, Kankuri E, Kere J, Elomaa O. NOD-like receptor signaling and inflammasome-related pathways are highlighted in psoriatic epidermis. Sci Rep 2016; 6:22745. [PMID: 26976200 PMCID: PMC4792137 DOI: 10.1038/srep22745] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/19/2016] [Indexed: 02/08/2023] Open
Abstract
Psoriatic skin differs distinctly from normal skin by its thickened epidermis. Most gene expression comparisons utilize full-thickness biopsies, with substantial amount of dermis. We assayed the transcriptomes of normal, lesional, and non-lesional psoriatic epidermis, sampled as split-thickness skin grafts, with 5′-end RNA sequencing. We found that psoriatic epidermis contains more mRNA per total RNA than controls, and took this into account in the bioinformatic analysis. The approach highlighted innate immunity-related pathways in psoriasis, including NOD-like receptor (NLR) signaling and inflammasome activation. We demonstrated that the NLR signaling genes NOD2, PYCARD, CARD6, and IFI16 are upregulated in psoriatic epidermis, and strengthened these findings by protein expression. Interestingly, PYCARD, the key component of the inflammasome, showed an altered expression pattern in the lesional epidermis. The profiling of non-lesional skin highlighted PSORS4 and mitochondrially encoded transcripts, suggesting that their gene expression is altered already before the development of lesions. Our data suggest that all components needed for the active inflammasome are present in the keratinocytes of psoriatic skin. The characterization of inflammasome pathways provides further opportunities for therapy. Complementing previous transcriptome studies, our approach gives deeper insight into the gene regulation in psoriatic epidermis.
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Affiliation(s)
- Mari H Tervaniemi
- Folkhälsan Institute of Genetics, Helsinki, Finland.,Department of Medical and Clinical Genetics, Medicum and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Shintaro Katayama
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Science for Life Laboratory, Solna, Sweden
| | - Tiina Skoog
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - H Annika Siitonen
- Folkhälsan Institute of Genetics, Helsinki, Finland.,Department of Medical and Clinical Genetics, Medicum and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Jyrki Vuola
- Helsinki Burn Center, Department of Plastic Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kristo Nuutila
- Department of Pharmacology, Medicum, University of Helsinki, Helsinki, Finland
| | - Raija Sormunen
- Biocenter Oulu, Department of Pathology, University of Oulu, Oulu, Finland
| | - Anna Johnsson
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Sten Linnarsson
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Sari Suomela
- Department of Dermatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Esko Kankuri
- Department of Pharmacology, Medicum, University of Helsinki, Helsinki, Finland
| | - Juha Kere
- Folkhälsan Institute of Genetics, Helsinki, Finland.,Department of Medical and Clinical Genetics, Medicum and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Science for Life Laboratory, Solna, Sweden
| | - Outi Elomaa
- Folkhälsan Institute of Genetics, Helsinki, Finland.,Department of Medical and Clinical Genetics, Medicum and Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland
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22
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Coincidental loss of DOCK8 function in NLRP10-deficient and C3H/HeJ mice results in defective dendritic cell migration. Proc Natl Acad Sci U S A 2015; 112:3056-61. [PMID: 25713392 DOI: 10.1073/pnas.1501554112] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Dendritic cells (DCs) are the primary leukocytes responsible for priming T cells. To find and activate naïve T cells, DCs must migrate to lymph nodes, yet the cellular programs responsible for this key step remain unclear. DC migration to lymph nodes and the subsequent T-cell response are disrupted in a mouse we recently described lacking the NOD-like receptor NLRP10 (NLR family, pyrin domain containing 10); however, the mechanism by which this pattern recognition receptor governs DC migration remained unknown. Using a proteomic approach, we discovered that DCs from Nlrp10 knockout mice lack the guanine nucleotide exchange factor DOCK8 (dedicator of cytokinesis 8), which regulates cytoskeleton dynamics in multiple leukocyte populations; in humans, loss-of-function mutations in Dock8 result in severe immunodeficiency. Surprisingly, Nlrp10 knockout mice crossed to other backgrounds had normal DOCK8 expression. This suggested that the original Nlrp10 knockout strain harbored an unexpected mutation in Dock8, which was confirmed using whole-exome sequencing. Consistent with our original report, NLRP3 inflammasome activation remained unaltered in NLRP10-deficient DCs even after restoring DOCK8 function; however, these DCs recovered the ability to migrate. Isolated loss of DOCK8 via targeted deletion confirmed its absolute requirement for DC migration. Because mutations in Dock genes have been discovered in other mouse lines, we analyzed the diversity of Dock8 across different murine strains and found that C3H/HeJ mice also harbor a Dock8 mutation that partially impairs DC migration. We conclude that DOCK8 is an important regulator of DC migration during an immune response and is prone to mutations that disrupt its crucial function.
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Barbé F, Douglas T, Saleh M. Advances in Nod-like receptors (NLR) biology. Cytokine Growth Factor Rev 2014; 25:681-97. [PMID: 25070125 DOI: 10.1016/j.cytogfr.2014.07.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 07/03/2014] [Indexed: 12/27/2022]
Abstract
The innate immune system is composed of a wide repertoire of conserved pattern recognition receptors (PRRs) able to trigger inflammation and host defense mechanisms in response to endogenous or exogenous pathogenic insults. Among these, nucleotide-binding and oligomerization domain (NOD)-like receptors (NLRs) are intracellular sentinels of cytosolic sanctity capable of orchestrating innate immunity and inflammatory responses following the perception of noxious signals within the cell. In this review, we elaborate on recent advances in the signaling mechanisms of NLRs, operating within inflammasomes or through alternative inflammatory pathways, and discuss the spectrum of their effector functions in innate immunity. We describe the progressive characterization of each NLR with associated controversies and cutting edge discoveries.
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Affiliation(s)
- François Barbé
- Department of Microbiology and Immunology, McGill University, Montréal, Québec H3A 2B4, Canada
| | - Todd Douglas
- Department of Microbiology and Immunology, McGill University, Montréal, Québec H3A 2B4, Canada
| | - Maya Saleh
- Department of Microbiology and Immunology, McGill University, Montréal, Québec H3A 2B4, Canada; Department of Medicine, McGill University, Montréal, Québec H3G 0B1, Canada.
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24
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Liu D, Rhebergen AM, Eisenbarth SC. Licensing Adaptive Immunity by NOD-Like Receptors. Front Immunol 2013; 4:486. [PMID: 24409181 PMCID: PMC3873523 DOI: 10.3389/fimmu.2013.00486] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 12/10/2013] [Indexed: 12/30/2022] Open
Abstract
The innate immune system is composed of a diverse set of host defense molecules, physical barriers, and specialized leukocytes and is the primary form of immune defense against environmental insults. Another crucial role of innate immunity is to shape the long-lived adaptive immune response mediated by T and B lymphocytes. The activation of pattern recognition receptors (PRRs) from the Toll-like receptor family is now a classic example of innate immune molecules influencing adaptive immunity, resulting in effective antigen presentation to naïve T cells. More recent work suggests that the activation of another family of PRRs, the NOD-like receptors (NLRs), induces a different set of innate immune responses and accordingly, drives different aspects of adaptive immunity. Yet how this unusually diverse family of molecules (some without canonical PRR function) regulates immunity remains incompletely understood. In this review, we discuss the evidence for and against NLR activity orchestrating adaptive immune responses during infectious as well as non-infectious challenges.
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Affiliation(s)
- Dong Liu
- Department of Laboratory Medicine, Yale University School of Medicine , New Haven, CT , USA ; Department of Immunobiology, Yale University School of Medicine , New Haven, CT , USA ; Department of Internal Medicine, Yale University School of Medicine , New Haven, CT , USA
| | - Anne Marie Rhebergen
- Department of Laboratory Medicine, Yale University School of Medicine , New Haven, CT , USA ; Department of Immunobiology, Yale University School of Medicine , New Haven, CT , USA ; Department of Internal Medicine, Yale University School of Medicine , New Haven, CT , USA
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine , New Haven, CT , USA ; Department of Immunobiology, Yale University School of Medicine , New Haven, CT , USA ; Department of Internal Medicine, Yale University School of Medicine , New Haven, CT , USA
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25
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Ratsimandresy RA, Dorfleutner A, Stehlik C. An Update on PYRIN Domain-Containing Pattern Recognition Receptors: From Immunity to Pathology. Front Immunol 2013; 4:440. [PMID: 24367371 PMCID: PMC3856626 DOI: 10.3389/fimmu.2013.00440] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 11/25/2013] [Indexed: 12/11/2022] Open
Abstract
Cytosolic pattern recognition receptors (PRRs) sense a wide range of endogenous danger-associated molecular patterns as well as exogenous pathogen-associated molecular patterns. In particular, Nod-like receptors containing a pyrin domain (PYD), called NLRPs, and AIM2-like receptors (ALRs) have been shown to play a critical role in host defense by facilitating clearance of pathogens and maintaining a healthy gut microflora. NLRPs and ALRs both encode a PYD, which is crucial for relaying signals that result in an efficient innate immune response through activation of several key innate immune signaling pathways. However, mutations in these PRRs have been linked to the development of auto-inflammatory and autoimmune diseases. In addition, they have been implicated in metabolic diseases. In this review, we summarize the function of PYD-containing NLRPs and ALRs and address their contribution to innate immunity, host defense, and immune-linked diseases.
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Affiliation(s)
- Rojo A Ratsimandresy
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University , Chicago, IL , USA
| | - Andrea Dorfleutner
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University , Chicago, IL , USA
| | - Christian Stehlik
- Division of Rheumatology, Department of Medicine, Feinberg School of Medicine, Northwestern University , Chicago, IL , USA ; Robert H. Lurie Comprehensive Cancer Center, Interdepartmental Immunobiology Center and Skin Disease Research Center, Feinberg School of Medicine, Northwestern University , Chicago, IL , USA
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26
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Murphy N, Grehan B, Lynch MA. Glial uptake of amyloid beta induces NLRP3 inflammasome formation via cathepsin-dependent degradation of NLRP10. Neuromolecular Med 2013; 16:205-15. [PMID: 24197756 DOI: 10.1007/s12017-013-8274-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 10/26/2013] [Indexed: 12/12/2022]
Abstract
The NLRP3 inflammasome forms in response to a diverse range of stimuli and is responsible for the processing and release of interleukin-1β (IL-1β) from the immunocompetent cells of the brain. The pathological peptide of Alzheimer's disease, amyloid beta (Aβ), induces formation of the NLRP3 inflammasome in a manner dependent on the family of proteases, cathepsins; however, the pathway by which cathepsins induce formation of the inflammasome has not yet been elucidated. In this study, we show that Aβ treatment of primary rat glial cultures increases cathepsin activation in the cytosol, formation of the NLRP3 inflammasome, caspase 1 activation and IL-1β release. We also show that a second NOD-like protein, NLRP10, is found bound to apoptosis-associated speck-like protein under resting conditions; however, with Aβ treatment, both in vitro and in vivo, NLRP10 is decreased. Further to these data, we show that cathepsins are capable of degrading NLRP10 and that treatment of glial cultures with recombinant NLRP10 reduces Aβ-induced caspase 1 activation and IL-1β release. We propose that Aβ-induced cathepsin released into the cytosol degrades NLRP10, thus allowing dissociation of NLRP3 and formation of the inflammasome.
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Affiliation(s)
- Niamh Murphy
- Department of Physiology, Trinity College Institute of Neuroscience, Trinity College, College Green, Dublin 2, Ireland,
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27
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Zhong Y, Kinio A, Saleh M. Functions of NOD-Like Receptors in Human Diseases. Front Immunol 2013; 4:333. [PMID: 24137163 PMCID: PMC3797414 DOI: 10.3389/fimmu.2013.00333] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 10/02/2013] [Indexed: 12/26/2022] Open
Abstract
Nucleotide-binding and oligomerization domain NOD-like receptors (NLRs) are highly conserved cytosolic pattern recognition receptors that perform critical functions in surveying the intracellular environment for the presence of infection, noxious substances, and metabolic perturbations. Sensing of these danger signals by NLRs leads to their oligomerization into large macromolecular scaffolds and the rapid deployment of effector signaling cascades to restore homeostasis. While some NLRs operate by recruiting and activating inflammatory caspases into inflammasomes, others trigger inflammation via alternative routes including the nuclear factor-κB, mitogen-activated protein kinase, and regulatory factor pathways. The critical role of NLRs in development and physiology is demonstrated by their clear implications in human diseases. Mutations in the genes encoding NLRP3 or NLRP12 lead to hereditary periodic fever syndromes, while mutations in CARD15 that encodes NOD2 are linked to Crohn’s disease or Blau’s syndrome. Genome-wide association studies (GWASs) have identified a number of risk alleles encompassing NLR genes in a host of diseases including allergic rhinitis, multiple sclerosis, inflammatory bowel disease, asthma, multi-bacillary leprosy, vitiligo, early-onset menopause, and bone density loss in elderly women. Animal models have allowed the characterization of underlying effector mechanisms in a number of cases. In this review, we highlight the functions of NLRs in health and disease and discuss how the characterization of their molecular mechanisms provides new insights into therapeutic strategies for the management of inflammatory pathologies.
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Affiliation(s)
- Yifei Zhong
- Department of Microbiology and Immunology, McGill University , Montreal, QC , Canada
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28
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Goh FY, Cook KLTP, Upton N, Tao L, Lah LC, Leung BP, Wong WSF. Receptor-interacting protein 2 gene silencing attenuates allergic airway inflammation. THE JOURNAL OF IMMUNOLOGY 2013; 191:2691-9. [PMID: 23918989 DOI: 10.4049/jimmunol.1202416] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Persistent activation of NF-κB has been associated with the development of asthma. Receptor-interacting protein 2 (Rip2) is a transcriptional product of NF-κB activation. It is an adaptor protein with serine/threonine kinase activity and has been shown to positively regulate NF-κB activity. We investigated potential protective effects of Rip2 gene silencing using small interfering RNA (siRNA) in an OVA-induced mouse asthma model. Rip2 protein level was found to be upregulated in allergic airway inflammation. A potent and selective Rip2 siRNA given intratracheally knocked down Rip2 expression in OVA-challenged lungs and reduced OVA-induced increases in total and eosinophil counts, and IL-4, IL-5, IL-13, IL-1β, IL-33, and eotaxin levels in bronchoalveolar lavage fluid. Rip2 silencing blocked OVA-induced inflammatory cell infiltration and mucus hypersecretion as observed in lung sections, and mRNA expression of ICAM-1, VCAM-1, E-selectin, RANTES, IL-17, IL-33, thymic stromal lymphopoietin, inducible NO synthase, and MUC5ac in lung tissues. In addition, elevation of serum OVA-specific IgE level in mouse asthma model was markedly suppressed by Rip2 siRNA, together with reduced IL-4, IL-5, and IL-13 production in lymph node cultures. Furthermore, Rip2 siRNA-treated mice produced significantly less airway hyperresponsiveness induced by methacholine. Mechanistically, Rip2 siRNA was found to enhance cytosolic level of IκBα and block p65 nuclear translocation and DNA-binding activity in lung tissues from OVA-challenged mice. Taken together, our findings clearly show that knockdown of Rip2 by gene silencing ameliorates experimental allergic airway inflammation, probably via interruption of NF-κB activity, confirming Rip2 a novel therapeutic target for the treatment of allergic asthma.
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Affiliation(s)
- Fera Y Goh
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore 119228
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29
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Damm A, Lautz K, Kufer TA. Roles of NLRP10 in innate and adaptive immunity. Microbes Infect 2013; 15:516-23. [DOI: 10.1016/j.micinf.2013.03.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 03/22/2013] [Indexed: 12/19/2022]
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30
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Menning M, Kufer TA. A role for the Ankyrin repeat containing protein Ankrd17 in Nod1- and Nod2-mediated inflammatory responses. FEBS Lett 2013; 587:2137-42. [DOI: 10.1016/j.febslet.2013.05.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/17/2013] [Accepted: 05/01/2013] [Indexed: 10/26/2022]
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31
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Monie TP. NLR activation takes a direct route. Trends Biochem Sci 2013; 38:131-9. [PMID: 23394939 DOI: 10.1016/j.tibs.2013.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 12/21/2012] [Accepted: 01/04/2013] [Indexed: 01/01/2023]
Abstract
For the first time there is now clear biochemical and biophysical evidence indicating that members of the nucleotide-binding domain and leucine-rich repeat containing (NLR) family can be activated as a result of direct interaction between the receptor and ligand. NLRX1 leucine-rich repeats bind to RNA; murine NAIP (NLR family, apoptosis inhibitory protein) 5 binds flagellin directly; and NOD (nucleotide-binding oligomerization domain containing) 1 and NOD2 may interact directly with fragments of peptidoglycan. It remains to be seen if NLRP3 has a specific ligand, but progress has been made in addressing its mechanism of activation, with cellular imbalances and mitochondrial dysfunction being important. This review updates our understanding of NLR activation in light of these recent advances and their impact on the NLR research.
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Affiliation(s)
- Tom P Monie
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK.
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32
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Krishnaswamy JK, Chu T, Eisenbarth SC. Beyond pattern recognition: NOD-like receptors in dendritic cells. Trends Immunol 2013; 34:224-33. [PMID: 23352728 DOI: 10.1016/j.it.2012.12.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 12/12/2012] [Accepted: 12/26/2012] [Indexed: 12/11/2022]
Abstract
Innate instruction of adaptive immunity was proposed more than 20 years ago as a mechanism by which long-lived lymphocyte responses are targeted to appropriate antigens. At the time Charles Janeway proposed this theory, most of the innate immune receptors were unknown, and the pivotal role of the dendritic cell in instructing T cell priming was debated. There is now overwhelming evidence that the innate and adaptive branches of the immune system must interact to generate immunity. Much of this work has focused on families of innate immune receptors called pattern recognition receptors (PRRs) on dendritic cells, which translate these inflammatory triggers into productive T cell responses. Nevertheless, we are only beginning to understand how these defence molecules shape the generation of immunity. We review the varied roles of one class of PRRs, the NOD-like receptors (NLRs), in immune responses and propose a new model in which adaptive immunity requires coordinated PRR activation within the dendritic cell.
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Affiliation(s)
- Jayendra Kumar Krishnaswamy
- Department of Laboratory Medicine, Section of Allergy and Immunology, Yale University School of Medicine, New Haven, CT 06520, USA
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33
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Joly S, Eisenbarth SC, Olivier AK, Williams A, Kaplan DH, Cassel SL, Flavell RA, Sutterwala FS. Cutting edge: Nlrp10 is essential for protective antifungal adaptive immunity against Candida albicans. THE JOURNAL OF IMMUNOLOGY 2012; 189:4713-7. [PMID: 23071280 DOI: 10.4049/jimmunol.1201715] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Nucleotide-binding domain leucine-rich repeat containing receptors (NLRs) are cytosolic receptors that initiate immune responses to sterile and infectious insults to the host. Studies demonstrated that Nlrp3 is critical for the control of Candida albicans infections and in the generation of antifungal Th17 responses. In this article, we show that the NLR family member Nlrp10 also plays a unique role in the control of disseminated C. albicans infection in vivo. Nlrp10-deficient mice had increased susceptibility to disseminated candidiasis, as indicated by decreased survival and increased fungal burdens. In contrast to Nlrp3, Nlrp10 deficiency did not affect innate proinflammatory cytokine production from macrophages and dendritic cells challenged with C. albicans. However, Nlrp10-deficient mice displayed a profound defect in Candida-specific Th1 and Th17 responses. These results demonstrate a novel role for Nlrp10 in the generation of adaptive immune responses to fungal infection.
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Affiliation(s)
- Sophie Joly
- Inflammation Program, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
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