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Mariotti FR, Supino D, Landolina N, Garlanda C, Mantovani A, Moretta L, Maggi E. IL-1R8: A molecular brake of anti-tumor and anti-viral activity of NK cells and ILC. Semin Immunol 2023; 66:101712. [PMID: 36753974 DOI: 10.1016/j.smim.2023.101712] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/30/2022] [Accepted: 01/09/2023] [Indexed: 02/07/2023]
Abstract
Interleukin-1 receptor family members (ILRs) and Toll-Like Receptors (TLRs) play pivotal role in immunity and inflammation and are expressed by most cell types including cells of both the innate and adaptive immune system. In this context, IL-1 superfamily members are also important players in regulating function and differentiation of adaptive and innate lymphoid cells. This system is tightly regulated in order to avoid uncontrolled activation, which may lead to detrimental inflammation contributing to autoimmune or allergic responses. IL-1R8 (also known as TIR8 or SIGIRR) is a member of the IL-1R family that acts as a negative regulator dampening ILR and TLR signaling and as a co-receptor for human IL-37. Human and mouse NK cells, that are key players in immune surveillance of tumors and infections, express high level of IL-1R8. In this review, we will summarize our current understanding on the structure, expression and function of IL-1R8 and we will also discuss the emerging role of IL-1R8 as an important checkpoint regulating NK cells function in pathological conditions including cancer and viral infections.
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Affiliation(s)
- Francesca R Mariotti
- Tumor Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, 00146 Rome, Italy
| | | | - Nadine Landolina
- Tumor Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, 00146 Rome, Italy
| | - Cecilia Garlanda
- IRCCS, Humanitas Research Hospital, 20089 Rozzano, Italy; Department of Biomedical Science, Humanitas University, 20072 Pieve Emanuele, Italy
| | - Alberto Mantovani
- IRCCS, Humanitas Research Hospital, 20089 Rozzano, Italy; Department of Biomedical Science, Humanitas University, 20072 Pieve Emanuele, Italy; The William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
| | - Lorenzo Moretta
- Tumor Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, 00146 Rome, Italy
| | - Enrico Maggi
- Translational Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, 00146 Rome, Italy.
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2
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Xie Y, Gao S, Cao Y, Ji Y, Zhang Q, Wei Y, Qi Z. Molecular characterization and functional analysis of DIGIRR from golden pompano (Trachinotus ovatus). Front Immunol 2022; 13:974310. [PMID: 36091048 PMCID: PMC9448908 DOI: 10.3389/fimmu.2022.974310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/05/2022] [Indexed: 11/25/2022] Open
Abstract
Mammalian single immunoglobulin (Ig) interleukin-1 receptor related molecule (SIGIRR), an important member of the Toll/interleukin-1 receptor (TIR) family, plays important balancing roles in the inflammatory responses. In the present study, the double Ig interleukin-1 receptor related molecule (DIGIRR), the homologous of SIGIRR, was characterized in golden pompano (Trachinotus ovatus) (termed as trDIGIRR). The full-length cDNA of trDIGIRR was 2,167 bp with an open reading frame (ORF) of 1,572 bp encoding 523 amino acids. The trDIGIRR contained several conserved domains including a signal peptide, two Ig domains, a transmembrane domain and a TIR domain, and shared high sequence identities with its teleost counterparts. Realtime qPCR analysis revealed that the trDIGIRR was distributed in all tissues examined, with high expressions in intestine, liver and head kidney. The expressions of trDIGIRR were induced by Vibrio alginolyticus, lipopolysaccharide (LPS) and polyinosinic-polycytidylic acid (poly I:C) challenge. Further analysis revealed that trDIGIRR was mainly located in the cytoplasm. In addition, the co-immunoprecipitation (co-IP) assay identified that trDIGIRR could interact with myeloid differentiation factor 88 (MyD88), but not interact with TIR domain containing adaptor protein inducing interferon-β (TRIF). Our results provide basis for studying the immune role of fish DIGIRR.
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Affiliation(s)
- Yushuai Xie
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng, China
| | - Shuangshuang Gao
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yiwen Cao
- Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng, China
| | - Yuexin Ji
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Qihuan Zhang
- Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng, China
| | - Youchuan Wei
- College of Animal Science and Technology, Guangxi University, Nanning, China
- *Correspondence: Zhitao Qi, ; Youchuan Wei,
| | - Zhitao Qi
- Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng, China
- *Correspondence: Zhitao Qi, ; Youchuan Wei,
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IL-1R8 as Pathoimmunological Marker for Severity of Canine Chronic Enteropathy. Vet Sci 2022; 9:vetsci9060295. [PMID: 35737347 PMCID: PMC9229266 DOI: 10.3390/vetsci9060295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 12/02/2022] Open
Abstract
Chronic enteropathy (CE) is a severe multifactorial gastrointestinal disease that affects dogs and is driven by poorly characterized inflammatory pathways. Imbalance of pro-inflammatory response regulators, including IL-1R8, may be due to different factors, among which the infection with Helicobacteraceae is known to lead to a vicious circle in which excessive pro-inflammatory signaling and gastrointestinal injury reinforce each other and boost the disease. We investigated the expression of IL-1R8 in large intestine biopsies of dogs with or without clinical signs of CE and with previously assessed enterohepatic Helicobacter spp. colonization status by mean of quantitative real-time PCR. Our study revealed that IL-1R8 is downregulated in both acutely (p = 0.0074) and chronically (p = 0.0159) CE affected dogs compared to healthy controls. The data also showed that IL-1R8 expression tends to decrease with colonization by Helicobacter spp. Interestingly, a negative correlation was detected between the level of expression of IL-1R8 and the severity of macroscopic lesions identified by endoscopy and the crypt hyperplasia score. We further compared the expression levels between males and females and found no statistically significant difference between the two groups. No significant difference was observed in IL-1R8 expression profiles with the age of the animals either. Interestingly, an association was uncovered between IL-1R8 expression level and dog breed. Together, our data advance knowledge on gastrointestinal pathoimmunology in dogs and highlight the potential utilization of IL-1R8 as a diagnostic, prognostic and therapeutic biomarker for canine chronic enteropathy.
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Chen Y, Jing H, Tang S, Liu P, Cheng Y, Fan Y, Chen H, Zhou J. Non-Coding RNAs in Sepsis-Associated Acute Kidney Injury. Front Physiol 2022; 13:830924. [PMID: 35464083 PMCID: PMC9024145 DOI: 10.3389/fphys.2022.830924] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/08/2022] [Indexed: 11/21/2022] Open
Abstract
Sepsis is a systemic inflammatory response caused by a severe infection that leads to multiple organ damage, including acute kidney injury (AKI). In intensive care units (ICU), the morbidity and mortality associated with sepsis-associated AKI (SA-AKI) are gradually increasing due to lack of effective and early detection, as well as proper treatment. Non-coding RNAs (ncRNAs) exert a regulatory function in gene transcription, RNA processing, post-transcriptional translation, and epigenetic regulation of gene expression. Evidence indicated that miRNAs are involved in inflammation and programmed cell death during the development of sepsis-associated AKI (SA-AKI). Moreover, lncRNAs and circRNAs appear to be an essential regulatory mechanism in SA-AKI. In this review, we summarized the molecular mechanism of ncRNAs in SA-AKI and discussed their potential in clinical diagnosis and treatment.
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Affiliation(s)
- Yanna Chen
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Huan Jing
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Simin Tang
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Pei Liu
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Ye Cheng
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Youling Fan
- Department of Anesthesiology, The First People’s Hospital of Kashgar, Xinjiang, China
- Department of Anesthesiology, The Second People’s Hospital of Panyu, Guangzhou, China
| | - Hongtao Chen
- Department of Anesthesiology, Guangzhou Eighth People’s Hospital, Guangzhou Medical University, Guangzhou, China
| | - Jun Zhou
- Department of Anesthesiology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Jun Zhou,
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Supino D, Minute L, Mariancini A, Riva F, Magrini E, Garlanda C. Negative Regulation of the IL-1 System by IL-1R2 and IL-1R8: Relevance in Pathophysiology and Disease. Front Immunol 2022; 13:804641. [PMID: 35211118 PMCID: PMC8861086 DOI: 10.3389/fimmu.2022.804641] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/03/2022] [Indexed: 12/11/2022] Open
Abstract
Interleukin-1 (IL-1) is a primary cytokine of innate immunity and inflammation. IL-1 belongs to a complex family including ligands with agonist activity, receptor antagonists, and an anti-inflammatory cytokine. The receptors for these ligands, the IL-1 Receptor (IL-1R) family, include signaling receptor complexes, decoy receptors, and negative regulators. Agonists and regulatory molecules co-evolved, suggesting the evolutionary relevance of a tight control of inflammatory responses, which ensures a balance between amplification of innate immunity and uncontrolled inflammation. IL-1 family members interact with innate immunity cells promoting innate immunity, as well as with innate and adaptive lymphoid cells, contributing to their differentiation and functional polarization and plasticity. Here we will review the properties of two key regulatory receptors of the IL-1 system, IL-1R2, the first decoy receptor identified, and IL-1R8, a pleiotropic regulator of different IL-1 family members and co-receptor for IL-37, the anti-inflammatory member of the IL-1 family. Their complex impact in pathology, ranging from infections and inflammatory responses, to cancer and neurologic disorders, as well as clinical implications and potential therapeutic exploitation will be presented.
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Affiliation(s)
- Domenico Supino
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Luna Minute
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Italy
| | - Andrea Mariancini
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Italy
| | - Federica Riva
- Department of Veterinary Medicine, University of Milan, Milan, Italy
| | - Elena Magrini
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Cecilia Garlanda
- Department of Immunology and Inflammation, IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Science, Humanitas University, Pieve Emanuele, Italy
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Li L, Wei J, Suber TL, Ye Q, Miao J, Li S, Taleb SJ, Tran KC, Tamaskar AS, Zhao J, Zhao Y. IL-37-induced activation of glycogen synthase kinase 3β promotes IL-1R8/Sigirr phosphorylation, internalization, and degradation in lung epithelial cells. J Cell Physiol 2021; 236:5676-5685. [PMID: 33400290 DOI: 10.1002/jcp.30253] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 12/30/2022]
Abstract
Interleukin (IL)-37 diminishes a variety of inflammatory responses through ligation to its receptor IL-1R8/Sigirr. Sigirr is a Toll like receptor/IL-1R family member. We have shown that Sigirr is not stable in response to IL-37 treatment. IL-37-induced Sigirr degradation is mediated by the ubiquitin-proteasome system, and the process is reversed by a deubiquitinase, USP13. However, the molecular mechanisms by which USP13 regulates Sigirr stability have not been revealed. In this study, we investigate the roles of glycogen synthesis kinase 3β (GSK3β) in Sigirr phosphorylation and stability. IL-37 stimulation induced Sigirr phosphorylation and degradation, as well as activation of GSK3β. Inhibition of GSK3β attenuated IL-37-induced Sigirr phosphorylation, while exogenous expressed GSK3β promoted Sigirr phosphorylation at threonine (T)372 residue. Sigirr association with GSK3β was detected. Amino acid residues 51-101 in GSK3β were identified as the Sigirr binding domain. These data indicate that GSK3β mediates IL-37-induced threonine phosphorylation of Sigirr. Further, we investigated the role of GSK3β-mediated phosphorylation of Sigirr in Sigirr degradation. Inhibition of GSK3β attenuated IL-37-induced Sigirr degradation, while T372 mutant of Sigirr was resistant to IL-37-mediated degradation. Furthermore, inhibition of Sigirr phosphorylation prevented Sigirr internalization and association with USP13, suggesting GSK3β promotes Sigirr degradation through disrupting Sigirr association with USP13.
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Affiliation(s)
- Lian Li
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Jianxin Wei
- Department of Medicine, The University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Tomeka L Suber
- Department of Medicine, The University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Qinmao Ye
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Jiaxing Miao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Shuang Li
- Department of Medicine, The University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sarah J Taleb
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Kevin C Tran
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Arya S Tamaskar
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA
| | - Jing Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA.,Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Yutong Zhao
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, Ohio, USA.,Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA
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7
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The effect of energy restriction on development and progression of chronic kidney disease: review of the current evidence. Br J Nutr 2020; 125:1201-1214. [PMID: 32921320 DOI: 10.1017/s000711452000358x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Energy restriction (ER) has anti-ageing effects and probably protects from a range of chronic diseases including cancer, diabetes and chronic kidney disease (CKD). Specifically, ER has a positive impact on experimental kidney ageing, CKD (diabetic nephropathy, polycystic kidney disease) and acute kidney injury (nephrotoxic, ischaemia-reperfusion injury) through such mechanisms as increased autophagy, mitochondrial biogenesis and DNA repair, and decreased inflammation and oxidative stress. Key molecules contributing to ER-mediated kidney protection include adenosine monophosphate-activated protein kinase, sirtuin-1 and PPAR-γ coactivator 1α. However, CKD is a complex condition, and ER may potentially worsen CKD complications such as protein-energy wasting, bone-mineral disorders and impaired wound healing. ER mimetics are drugs, such as metformin and Na-glucose co-transporter-2 which mimic the action of ER. This review aims to provide comprehensive data regarding the effect of ER on CKD progression and outcomes.
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Filipe J, Bronzo V, Curone G, Castiglioni B, Vigo D, Smith B, Herrera V, Roccabianca P, Moroni P, Riva F. Staphylococcus aureus intra-mammary infection affects the expression pattern of IL-R8 in goat. Comp Immunol Microbiol Infect Dis 2019; 66:101339. [PMID: 31437679 DOI: 10.1016/j.cimid.2019.101339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 07/24/2019] [Accepted: 07/26/2019] [Indexed: 01/23/2023]
Abstract
IL-1R8 is a member of Interleukin-1 receptor family acting as a negative regulator of inflammation reliant on ILRs and TLRs activation. IL-1R8 role has never been evaluated in acute bacterial mastitis. We first investigated IL-1R8 sequence conservation among different species and its pattern of expression in a wide panel of organs from healthy goats. Then, modulation of IL-1R8 during natural and experimental mammary infection was evaluated and compared in blood, milk and mammary tissues from healthy and Staphylococcus aureus infected goats. IL-1R8 has a highly conserved sequence among vertebrates. Goat IL-1R8 was ubiquitously expressed in epithelial and lymphoid tissues with highest levels in pancreas. IL-1R8 was down-regulated in epithelial mammary cells following S. aureus infection. Interestingly it was up-regulated in leukocytes infiltrating the infected mammary tissues suggesting that it could represent a target of S. aureus immune evasion.
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Affiliation(s)
- J Filipe
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - V Bronzo
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - G Curone
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - B Castiglioni
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, 26900, Lodi, Italy.
| | - D Vigo
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - B Smith
- University of California, Davis, Wildlife Health Center, Davis, CA 95616, USA.
| | - V Herrera
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - P Roccabianca
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
| | - P Moroni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy; Cornell University, Animal Health Diagnostic Center, Quality Milk Production Services, Ithaca, NY 14853, USA.
| | - F Riva
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, via Celoria 10, 20133, Milan, Italy.
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谭 继, 何 进, 秦 文, 赵 林. [Quercetin alleviates lipopolysaccharide-induced acute kidney injury in mice by suppressing TLR4/NF-κB pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:598-602. [PMID: 31140426 PMCID: PMC6743929 DOI: 10.12122/j.issn.1673-4254.2019.05.16] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To investigate the protective effect of quercetin against lipopolysaccharide (LPS)- induced acute kidney injury (AKI) in mice and explore its mechanism. METHODS Forty male BALB/c mice were randomly divided into control group (with saline treatment), 15 mg/kg LPS group, and quercetin-treated groups with intragastric quercetin treatment (once daily for 3 consecutive days) at low (25 mg/kg) and high (50 mg/kg) dose prior to 15 mg/kg LPS injection. LPS was administered by intraperitoneally injection 1 after the last gavage of quercetin. The mice were sacrificed 24 h after LPS injection for analysis of kidney pathologies, blood urea nitrogen (BUN) and creatinine levels; serum levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and IL-6 were detected by ELISA, and the expressions of Toll-like receptor-4 (TLR4), MyD88, TRAF-6 and NF-κBp65 in the kidney were detected by Western blotting. RESULTS Quercetin significantly lessened renal pathologies, lowered BUN and creatinine levels (P < 0.05) and inhibited TNF-α, IL-1β, and IL-6 production in mice with LPS-induced AKI (P < 0.05). Pretreatment with quercetin also significantly inhibited TLR4, MyD88, and TRAF-6 expressions and NF-κBp65 activation in the kidneys of the rats with LPS challenge (P < 0.05). CONCLUSIONS Quercetin pretreatment can protect mice against LPSinduced AKI by inhibiting TLR4/NF-κB signaling pathway.
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Affiliation(s)
- 继翔 谭
- 重庆医科大学附属第一医院 重症医学科,重庆 400016Department of Critical Care Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - 进 何
- 重庆医科大学附属第一医院 肾内科,重庆 400016Department of Nephrology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - 文熠 秦
- 重庆医科大学附属第一医院 中西医结合科,重庆 400016Department of Integrated Traditional Chinese and Western Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - 林 赵
- 重庆医科大学附属第一医院 重症医学科,重庆 400016Department of Critical Care Medicine, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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10
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He J, Zhang B, Gan H. CIDEC Is Involved in LPS-Induced Inflammation and Apoptosis in Renal Tubular Epithelial Cells. Inflammation 2019; 41:1912-1921. [PMID: 29959627 DOI: 10.1007/s10753-018-0834-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Adenosine 5'-monophosphate-activated protein kinase (AMPK) has been shown to have anti-inflammatory effect by inhibition of the nuclear factor κB (NF-κB) pathway and is involved in lipopolysaccharide (LPS)-induced inflammation. Cell-death-inducing DFF45-like effector C (CIDEC) can directly down-regulate AMPK activity through interacting with AMPKα subunit. However, whether the AMPK or CIDEC is involved in LPS-induced inflammation in renal tubular epithelial cells is still unknown. Therefore, we studied the role of AMPK and CIDEC in LPS-treated NRK-52E cells. Our results showed that LPS could up-regulate the expression of CIDEC in vitro and in vivo. Silencing CIDEC by CIDEC-siRNA could restore expression of phosphorylated-AMPKα which was decreased by LPS, suppress LPS-induced NF-κB pathway activation, and TNF-α, IL-6, and IL-1β production in NRK-52E cells. Furthermore, silencing CIDEC also partially alleviated LPS-induced epithelial cells apoptosis. In conclusion, the results demonstrated that CIDEC/AMPK signaling pathway played an important role in LPS-induced inflammation and epithelial cells apoptosis.
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Affiliation(s)
- Jin He
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Bin Zhang
- Department of Cardiology and Nephrology in Second People's Hospital of Chongqing Jiulongpo District, Chongqing, 400052, People's Republic of China
| | - Hua Gan
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China.
- Department of Cardiology and Nephrology in Second People's Hospital of Chongqing Jiulongpo District, Chongqing, 400052, People's Republic of China.
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11
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Wang SY, Cai GY, Chen XM. Energy restriction in renal protection. Br J Nutr 2018; 120:1149-1158. [PMID: 30401006 PMCID: PMC6316363 DOI: 10.1017/s0007114518002684] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 07/22/2018] [Accepted: 08/20/2018] [Indexed: 02/06/2023]
Abstract
Energy restriction (ER) has been widely studied as a novel intervention, and its ability to prolong life has been fully demonstrated. For example, ER can significantly extend the lifespans of model flies, worms, rodents and other mammals. The role of ER in renal protection has also been elucidated. In preclinical studies, adjusting total energy intake or consumption of specific nutrients has prophylactic or therapeutic effects on ageing-related kidney disease and acute and chronic kidney injury. Amino acid restriction has gradually attracted attention. ER mimetics have also been studied in depth. The protective mechanisms of ER and ER mimetics for renal injury include increasing AMP-activated protein kinase and sirtuin type 1 (Sirt1) levels and autophagy and reducing mammalian target of rapamycin, inflammation and oxidative stress. However, the renal protective effect of ER has mostly been investigated in rodent models, and the role of ER in patients cannot be determined due to the lack of large randomised controlled trials. To protect the kidney, the mechanism of ER must be thoroughly researched, and more accurate diet or drug interventions need to be identified.
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Affiliation(s)
| | - Guang-Yan Cai
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese PLA Institute of Nephrology, Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
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12
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Molgora M, Supino D, Mantovani A, Garlanda C. Tuning inflammation and immunity by the negative regulators IL-1R2 and IL-1R8. Immunol Rev 2018; 281:233-247. [PMID: 29247989 DOI: 10.1111/imr.12609] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Interleukin-1 receptor family members (ILRs) and Toll-Like Receptors (TLRs) are key players in immunity and inflammation and are tightly regulated at different levels. Most cell types, including cells of the innate and adaptive immune system express ILRs and TLRs. In addition, IL-1 family members are emerging as key players in the differentiation and function of innate and adaptive lymphoid cells. IL-1R2 and IL-1R8 (also known as TIR8 or SIGIRR) are members of the ILR family acting as negative regulators of the IL-1 system. IL-1R2 binds IL-1 and the accessory protein IL-1RAcP without activating signaling and can be released as a soluble form (sIL-1R2), thus modulating IL-1 availability for the signaling receptor. IL-1R8 dampens ILR- and TLR-mediated cell activation and it is a component of the receptor recognizing human IL-37. Here, we summarize our current understanding of the structure and function of IL-1R2 and IL-1R8, focusing on their role in different pathological conditions, ranging from infectious and sterile inflammation, to autoimmunity and cancer-related inflammation. We also address the emerging evidence regarding the role of IL-1R8 as a crucial checkpoint molecule in NK cells in anti-cancer and antiviral activity and the potential therapeutic implications of IL-1R8 blockade in specific pathological contexts.
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Affiliation(s)
- Martina Molgora
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Domenico Supino
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Alberto Mantovani
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Italy.,Humanitas University, Pieve Emanuele (Milano), Italy.,The William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Cecilia Garlanda
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Italy.,Humanitas University, Pieve Emanuele (Milano), Italy
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13
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Shi M, Zeng X, Guo F, Huang R, Feng Y, Ma L, Zhou L, Fu P. Anti-Inflammatory Pyranochalcone Derivative Attenuates LPS-Induced Acute Kidney Injury via Inhibiting TLR4/NF-κB Pathway. Molecules 2017; 22:E1683. [PMID: 28994737 PMCID: PMC6151422 DOI: 10.3390/molecules22101683] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 10/01/2017] [Accepted: 10/04/2017] [Indexed: 02/05/2023] Open
Abstract
Treatment of septic acute kidney injury (AKI) has still been beyond satisfaction, although anti-inflammatory therapy is beneficial for sepsis-induced AKI. Compound 5b was derived from natural pyranochalcones and exhibited potent anti-inflammatory activity in adjuvant-induced arthritis. In this study, we aimed to investigate the renoprotective effects and potential mechanism of 5b against lipopolysaccharide (LPS)-induced AKI. C57BL/6 mice and human renal proximal tubule cell line (HK-2 cell) were treated with LPS, respectively. Compound 5b was orally administrated at a dose of 25 mg/kg/day for 5 days before LPS (10 mg/kg) intraperitoneal injection. Cells were pretreated with 25 μg/mL 5b for 30 min before LPS (1 μg/mL) treatment. Pretreatment with 5b markedly alleviated tubular injury and renal dysfunction in LPS-induced AKI. The expression of IL-1β, IL-6, and TNF-α both in renal tissue of AKI mice and in the LPS-stimulated HK-2 cell culture medium were reduced by 5b treatment (p < 0.05). The results of immunohistochemistry staining showed that 5b reduced the expression of NF-κB p65 in kidneys. Similarly, 5b decreased the LPS-induced levels of NF-κB p65 and TLR4 proteins in kidneys and HK-2 cells. These data demonstrated that a potent pyranochalcone derivative, 5b, exhibited renoprotective effect against LPS-induced AKI, which was associated with anti-inflammatory activity by inhibiting the TLR4/NF-κB pathway.
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Affiliation(s)
- Min Shi
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Xiaoxi Zeng
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Fan Guo
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Rongshuang Huang
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Yanhuan Feng
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Liang Ma
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Li Zhou
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
| | - Ping Fu
- Kidney Research Institute, Division of Nephrology, West China Hospital of Sichuan University, Chengdu 610041, Sichuan, China.
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14
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Feng D, Wang Y, Liu Y, Wu L, Li X, Chen Y, Chen Y, Chen Y, Xu C, Yang K, Zhou T. DC-SIGN reacts with TLR-4 and regulates inflammatory cytokine expression via NF-κB activation in renal tubular epithelial cells during acute renal injury. Clin Exp Immunol 2017; 191:107-115. [PMID: 28898406 DOI: 10.1111/cei.13048] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2017] [Indexed: 12/23/2022] Open
Abstract
In the pathological process of acute kidney injury (AKI), innate immune receptors are essential in inflammatory response modulation; however, the precise molecular mechanisms are still unclear. Our study sought to demonstrate the inflammatory response mechanisms in renal tubular epithelial cells via Toll-like receptor-4 (TLR-4) and dendritic cell-specific intercellular adhesion molecule 3-grabbing non-integrin 1 (DC-SIGN) signalling. We found that DC-SIGN exhibited strong expression in renal tubular epithelial cells of human acute renal injury tissues. DC-SIGN protein expression was increased significantly when renal tubular epithelial cells were exposed to lipopolysaccharide (LPS) for a short period. Furthermore, DC-SIGN was involved in the activation of p65 by TLR-4, which excluded p38 and c-Jun N-terminal kinases (JNK). Interleukin (IL)-6 and tumour necrosis factor (TNF)-α expression was decreased after DC-SIGN knock-down, and LPS induced endogenous interactions and plasma membrane co-expression between TLR-4 and DC-SIGN. These results show that DC-SIGN and TLR-4 interactions regulate inflammatory responses in renal tubular epithelial cells and participate in AKI pathogenesis.
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Affiliation(s)
- D Feng
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - Y Wang
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - Y Liu
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China.,Department of Cardiology, Shanghai Ninth People's Hospital, Shanghai, China
| | - L Wu
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - X Li
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Chen
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - Y Chen
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - Y Chen
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - C Xu
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
| | - K Yang
- Institute of Cardiovascular Disease, Ruijin Hospital, Shanghai, China
| | - T Zhou
- Department of Pediatrics, Ruijin Hospital, Shanghai, China
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15
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Bonecchi R, Garlanda C, Mantovani A, Riva F. Cytokine decoy and scavenger receptors as key regulators of immunity and inflammation. Cytokine 2016; 87:37-45. [PMID: 27498604 DOI: 10.1016/j.cyto.2016.06.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 06/17/2016] [Indexed: 12/16/2022]
Abstract
IL-1R2 was the first decoy receptor to be described. Subsequently receptors which act as pure decoys or scavengers or trigger dampening of cytokine signaling have been described for cytokines and chemokines. Here we review the current understanding of the mode of action and significance in pathology of the chemokine atypical receptor ACKR2, the IL-1 decoy receptor IL-1R2 and the atypical IL-1 receptor family IL-1R8. Decoy and scavenger receptors with no or atypical signaling have emerged as a general strategy conserved in evolution to tune the action of cytokines, chemokines and growth factors.
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Affiliation(s)
- Raffaella Bonecchi
- Istituto Clinico Humanitas IRCCS, via Manzoni 113, 20089 Rozzano, Italy; Humanitas University, via Manzoni 113, 20089 Rozzano, Italy
| | - Cecilia Garlanda
- Istituto Clinico Humanitas IRCCS, via Manzoni 113, 20089 Rozzano, Italy
| | - Alberto Mantovani
- Istituto Clinico Humanitas IRCCS, via Manzoni 113, 20089 Rozzano, Italy; Humanitas University, via Manzoni 113, 20089 Rozzano, Italy.
| | - Federica Riva
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Milan, Italy
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16
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Feng W, Gu YF, Nie L, Guo DY, Xiang LX, Shao JZ. Characterization of SIGIRR/IL-1R8 Homolog from Zebrafish Provides New Insights into Its Inhibitory Role in Hepatic Inflammation. THE JOURNAL OF IMMUNOLOGY 2016; 197:151-67. [PMID: 27206770 DOI: 10.4049/jimmunol.1502334] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/02/2016] [Indexed: 12/20/2022]
Abstract
Single Ig IL-1R-related molecule (SIGIRR, also called IL-1R8 or Toll/IL-1R [TIR]8), a negative regulator for Toll/IL-1R signaling, plays critical roles in innate immunity and various diseases in mammals. However, the occurrence of this molecule in ancient vertebrates and its function in liver homeostasis and disorders remain poorly understood. In this study, we identified a SIGIRR homology from zebrafish (Danio rerio [DrSIGIRR]) by using a number of conserved structural and functional hallmarks to its mammalian counterparts. DrSIGIRR was highly expressed in the liver. Ablation of DrSIGIRR by lentivirus-delivered small interfering RNA in the liver significantly enhanced hepatic inflammation in response to polyinosinic-polycytidylic acid [poly(I:C)] stimulation, as shown by the upregulation of inflammatory cytokines and increased histological disorders. In contrast, depletion of TIR domain-containing adaptor inducing IFN-β (TRIF) or administration of TRIF signaling inhibitor extremely abrogated the poly(I:C)-induced hepatic inflammation. Aided by the zebrafish embryo model, overexpression of DrSIGIRR in vivo significantly inhibited the poly(I:C)- and TRIF-induced NF-κB activations; however, knockdown of DrSIGIRR promoted such activations. Furthermore, pull-down and Duolink in situ proximity ligation assay assays showed that DrSIGIRR can interact with the TRIF protein. Results suggest that DrSIGIRR plays an inhibitory role in TRIF-mediated inflammatory reactions by competitive recruitment of the TRIF adaptor protein from its TLR3/TLR22 receptor. To our knowledge, this study is the first to report a functional SIGIRR homolog that existed in a lower vertebrate. This molecule is essential to establish liver homeostasis under inflammatory stimuli. Overall, the results will enrich the current knowledge about SIGIRR-mediated immunity and disorders in the liver.
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Affiliation(s)
- Wei Feng
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and
| | - Yi-Feng Gu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and
| | - Li Nie
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and
| | - Dong-Yang Guo
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and
| | - Li-Xin Xiang
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and
| | - Jian-Zhong Shao
- College of Life Sciences, Zhejiang University, Hangzhou 310058, People's Republic of China; Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Hangzhou 310058, People's Republic of China; and Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, People's Republic of China
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17
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Molgora M, Barajon I, Mantovani A, Garlanda C. Regulatory Role of IL-1R8 in Immunity and Disease. Front Immunol 2016; 7:149. [PMID: 27148268 PMCID: PMC4837151 DOI: 10.3389/fimmu.2016.00149] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/05/2016] [Indexed: 12/12/2022] Open
Abstract
Interleukin-1 receptor family members (ILRs) and toll-like receptors (TLRs) are characterized by the presence of a conserved intracellular domain and the toll-IL-1resistance (TIR) domain and are key players in immunity and inflammation. ILR and TLR signaling is tightly regulated at different levels. All cell types of the innate immune system express ILRs and TLRs. In addition, IL-1 family members are emerging as key players in the differentiation and function of innate and adaptive lymphoid cells. IL-1R8, also known as TIR8 or SIGIRR, is a fringe member of the ILR family and acts as a negative regulator of ILR and TLR signaling, which dampens ILR- and TLR-mediated cell activation. IL-1R8 is a component of the receptor recognizing human IL-37. Here, we summarize our current understanding of the structure and function of IL-1R8, focusing on its role in different pathological conditions, ranging from infectious and sterile inflammation to autoimmunity and cancer-related inflammation.
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Affiliation(s)
- Martina Molgora
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center , Rozzano , Italy
| | | | - Alberto Mantovani
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Italy; Humanitas University, Rozzano, Italy
| | - Cecilia Garlanda
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center , Rozzano , Italy
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18
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Li D, Zhang X, Chen B. SIGIRR participates in negative regulation of LPS response and tolerance in human bladder epithelial cells. BMC Immunol 2015; 16:73. [PMID: 26634342 PMCID: PMC4669620 DOI: 10.1186/s12865-015-0137-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 11/27/2015] [Indexed: 12/25/2022] Open
Abstract
Background The innate immune response of urinary tract is critically important in the defense to microbial attack. Toll-like receptor 4 (TLR4) controls initial mucosal response to uropathogenic Escherichia coli (UPEC). However, excessive and dysfunctional TLR signaling may result in severe inflammation and inappropriate tissue damage. Previous studies have demonstrated that single immunoglobulin IL-1R-related receptor/Toll IL-1 receptor 8 (SIGIRR/TIR8) is a member of the toll-interleukin-1 receptor (TIR) family that can negatively modulate TLR4 mediated signaling, but its role in the innate immunity of urinary tract infection remains incompletely defined. In this study, we investigated its cellular distribution and mechanisms involved within the human bladder epithelial cells after LPS stimulation. Results Immunostaining, reverse transcription PCR and Western blot results showed that SIGIRR was constitutively expressed in the human bladder epithelial cell lines and was downregulated after LPS stimulation. To further define the role of SIGIRR, cells were transiently transfected with SIGIRR siRNA and stimulated with LPS. SIGIRR gene silencing augmented chemokine expression in response to LPS, as indicated by increased levels of IL-6 and IL-8 secretions in the supernatants compared with negative control siRNA. Furthermore, LPS tolerance, a protective mechanism against second LPS stimulation, was significantly reduced in SIGIRR siRNA transfected cells. Moreover, transient gene silencing augmented LPS-induced NF-κB and MAPK activation. Conclusions In conclusion, our results suggest that SIGIRR plays an important role in the negative regulation of LPS response and tolerance in human bladder epithelial cells, possibly through its impact on TLR-mediated signaling.
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Affiliation(s)
- Dan Li
- Department of Infectious Diseases, the First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
| | - Xin Zhang
- Department of Infectious Diseases, the First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
| | - Baiyi Chen
- Department of Infectious Diseases, the First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
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Palomo J, Dietrich D, Martin P, Palmer G, Gabay C. The interleukin (IL)-1 cytokine family--Balance between agonists and antagonists in inflammatory diseases. Cytokine 2015; 76:25-37. [PMID: 26185894 DOI: 10.1016/j.cyto.2015.06.017] [Citation(s) in RCA: 308] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 06/29/2015] [Indexed: 12/14/2022]
Abstract
The interleukin (IL)-1 family of cytokines comprises 11 members, including 7 pro-inflammatory agonists (IL-1α, IL-1β, IL-18, IL-33, IL-36α, IL-36β, IL-36γ) and 4 defined or putative antagonists (IL-1R antagonist (IL-1Ra), IL-36Ra, IL-37, and IL-38) exerting anti-inflammatory activities. Except for IL-1Ra, IL-1 cytokines do not possess a leader sequence and are secreted via an unconventional pathway. In addition, IL-1β and IL-18 are produced as biologically inert pro-peptides that require cleavage by caspase-1 in their N-terminal region to generate active proteins. N-terminal processing is also required for full activity of IL-36 cytokines. The IL-1 receptor (IL-1R) family comprises 10 members and includes cytokine-specific receptors, co-receptors and inhibitory receptors. The signaling IL-1Rs share a common structure with three extracellular immunoglobulin (Ig) domains and an intracellular Toll-like/IL-1R (TIR) domain. IL-1 cytokines bind to their specific receptor, which leads to the recruitment of a co-receptor and intracellular signaling. IL-1 cytokines induce potent inflammatory responses and their activity is tightly controlled at the level of production, protein processing and maturation, receptor binding and post-receptor signaling by naturally occurring inhibitors. Some of these inhibitors are IL-1 family antagonists, while others are IL-1R family members acting as membrane-bound or soluble decoy receptors. An imbalance between agonist and antagonist levels can lead to exaggerated inflammatory responses. Several genetic modifications or mutations associated with dysregulated IL-1 activity and autoinflammatory disorders were identified in mouse models and in patients. These findings paved the road to the successful use of IL-1 inhibitors in diseases that were previously considered as untreatable.
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Affiliation(s)
- Jennifer Palomo
- Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Switzerland
| | - Damien Dietrich
- Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Switzerland
| | - Praxedis Martin
- Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Switzerland
| | - Gaby Palmer
- Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Switzerland
| | - Cem Gabay
- Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Switzerland.
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Abstract
Toll-like receptors (TLRs) and nucleotide-binding oligomerization domain receptors (NLRs) are families of pattern recognition receptors that, together with inflammasomes, sense and respond to highly conserved pathogen motifs and endogenous molecules released upon cell damage or stress. Evidence suggests that TLRs, NLRs and the NACHT, LRR and PYD domains-containing protein 3 (NLRP3) inflammasome have important roles in kidney diseases through regulation of inflammatory and tissue-repair responses to infection and injury. In this Review, we discuss the pathological mechanisms that are related to TLRs, NLRs and NLRP3 in various kidney diseases. In general, these receptors are protective in the host defence against urinary tract infection, but can sustain and self-perpetuate tissue damage in sterile inflammatory and immune-mediated kidney diseases. TLRs, NLRs and NLRP3, therefore, have become promising drug targets to enable specific modulation of kidney inflammation and suppression of immunopathology in kidney disease.
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21
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Blok DC, van Lieshout MHP, Hoogendijk AJ, Florquin S, de Boer OJ, Garlanda C, Mantovani A, van't Veer C, de Vos AF, van der Poll T. Single immunoglobulin interleukin-1 receptor-related molecule impairs host defense during pneumonia and sepsis caused by Streptococcus pneumoniae. J Innate Immun 2014; 6:542-52. [PMID: 24556793 DOI: 10.1159/000358239] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 12/28/2013] [Indexed: 12/13/2022] Open
Abstract
Streptococcus pneumoniae is a common cause of pneumonia and sepsis. Toll-like receptors (TLRs) play a pivotal role in the host defense against infection. In this study, we sought to determine the role of single immunoglobulin interleukin-1 receptor-related molecule (SIGIRR a.k.a. TIR8), a negative regulator of TLR signaling, in pneumococcal pneumonia and sepsis. Wild-type and SIGIRR-deficient (sigirr-/-) mice were infected intranasally (to induce pneumonia) or intravenously (to induce primary sepsis) with S. pneumoniae and euthanized after 6, 24, or 48 h for analyses. Additionally, survival studies were performed. sigirr-/- mice showed delayed mortality during lethal pneumococcal pneumonia. Accordingly, sigirr-/- mice displayed lower bacterial loads in lungs and less dissemination of the infection 24 h after the induction of pneumonia. SIGIRR deficiency was associated with increased interstitial and perivascular inflammation in lung tissue early after infection, with no impact on neutrophil recruitment or cytokine production. sigirr-/- mice also demonstrated reduced bacterial burdens at multiple body sites during S. pneumoniae sepsis. sigirr-/- alveolar macrophages and neutrophils exhibited an increased capacity to phagocytose viable pneumococci. These results suggest that SIGIRR impairs the antibacterial host defense during pneumonia and sepsis caused by S. pneumoniae.
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Affiliation(s)
- Dana C Blok
- Center of Experimental and Molecular Medicine, Center of Infection and Immunity, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Abstract
The IL-1 family of ligands and receptors has a central role in both innate and adaptive immune responses and is tightly controlled by antagonists, decoy receptors, scavengers, dominant negative molecules, miRNAs and other mechanisms, acting extracellularly or intracellularly. During evolution, the development of multiple mechanisms of negative regulation reveals the need for tight control of the biological consequences of IL-1 family ligands in order to balance local and systemic inflammation and limit immunopathology. Indeed, studies with gene targeted mice for negative regulators and genetic studies in humans provide evidence for their non-redundant role in controlling inflammation, tissue damage and adaptive responses. In addition, studies have revealed the need of negative regulation of the IL-1 family not only in disease, but also in homeostatic conditions. In this review, the negative regulation mediated by decoy receptors are presented and include IL-1R2 and IL-IL-18BP as well as atypical receptors, which include TIR8/SIGIRR, IL-1RAcPb, TIGIRR-1 and IL-1RAPL. Particular emphasis is given to IL-1R2, since its discovery is the basis for the formulation of the decoy paradigm, now considered a general strategy to counter the primary inflammatory activities of cytokines and chemokines. Emphasis is also given to TIR8, a prototypical negative regulatory receptor having non-redundant roles in limiting inflammation and adaptive responses.
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Affiliation(s)
- Cecilia Garlanda
- Humanitas Clinical and Research Center, Department of Inflammation and Immunology, Rozzano, Italy.
| | - Federica Riva
- Department of Veterinary Science and Public Health, University of Milan, Italy
| | - Eduardo Bonavita
- Humanitas Clinical and Research Center, Department of Inflammation and Immunology, Rozzano, Italy
| | - Alberto Mantovani
- Humanitas Clinical and Research Center, Department of Inflammation and Immunology, Rozzano, Italy; Department of Biotechnology and Translational Medicine, University of Milan, Rozzano (Milano), Italy
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23
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Garlanda C, Riva F, Bonavita E, Gentile S, Mantovani A. Decoys and Regulatory "Receptors" of the IL-1/Toll-Like Receptor Superfamily. Front Immunol 2013; 4:180. [PMID: 23847621 PMCID: PMC3705552 DOI: 10.3389/fimmu.2013.00180] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 06/22/2013] [Indexed: 11/24/2022] Open
Abstract
Members of the IL-1 family play a key role in innate and adaptive immunity and in the pathogenesis of diverse diseases. Members of IL-1R like receptor (ILR) family include signaling molecules and negative regulators. The latter include decoy receptors (IL-1RII; IL-18BP) and “receptors” with regulatory function (TIR8/SIGIRR; IL-1RAcPb; DIGIRR). Structural considerations suggest that also TIGIRR-1 and IL-1RAPL may have regulatory function. The presence of multiple pathways of negative regulation of members of the IL-1/IL-1R family emphasizes the need for a tight control of members of this fundamental system.
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Affiliation(s)
- Cecilia Garlanda
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center , Rozzano , Italy
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Duitman J, Teske GJD, Butter LM, Leemans JC, Florquin S, Spek CA. CCAAT/enhancer-binding protein delta (C/EBPδ) plays a minor role in renal host defense against uropathogenic Escherichia coli. Transpl Infect Dis 2013; 15:E119-21. [PMID: 23582055 DOI: 10.1111/tid.12081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 10/24/2012] [Accepted: 12/23/2012] [Indexed: 11/29/2022]
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