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Tweedell RE, Kanneganti TD. Inflammasomes at the Foundation of Inflammatory Cell Death Complexes. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 213:247-249. [PMID: 39008793 PMCID: PMC11302449 DOI: 10.4049/jimmunol.2400288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 07/17/2024]
Abstract
This Pillars of Immunology article is a commentary on “The Inflammasome: A Molecular Platform Triggering Activation of Inflammatory Caspases and Processing of proIL-β,” a pivotal article written by F. Martinon, K. Burns, and J. Tschopp, published in Molecular Cell in 2002. https://doi.org/10.1016/S1097-2765(02)00599-3.
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Affiliation(s)
- Rebecca E Tweedell
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
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2
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Xu R, Li S, Zhang Y, Pu Y, Luo G, Wang X. Causal effects of gut microbiota on the risk of osteomyelitis: a Mendelian randomization study. Front Microbiol 2024; 15:1342172. [PMID: 38863758 PMCID: PMC11166080 DOI: 10.3389/fmicb.2024.1342172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 05/14/2024] [Indexed: 06/13/2024] Open
Abstract
Background Osteomyelitis is characterized by an inflammatory process initiated by microorganisms, leading to infection and subsequent degradation of bone tissue. Several studies have indicated a potential link between gut microbiota and the occurrence of osteomyelitis. Utilizing the benefits of Mendelian randomization, which mitigates issues of confounding and reverse causation, we employed this approach to ascertain the presence of a causal connection between gut microbiota and osteomyelitis. Additionally, we aimed to pinpoint gut microbiota that could potentially exert substantial influence. Methods We performed a rigorous screening of single nucleotide polymorphisms in GWAS summary statistics for gut microbiota and osteomyelitis. The 2,542 instrumental variables obtained after screening were subjected to MR analyses, including inverse variance weighting, weighted median, weighted mode, MR-Egger, and Mendelian randomization pleiotropy residual sum and outlier test. We then validated the reliability of the results by performing sensitivity analyses on the MR of 196 well-defined gut microbiota. Result We established a causal relationship between gut microbiota and osteomyelitis through MR analysis. Additionally, we identified a taxon of significant importance and six taxons with nominal significance. Specifically, the family Bacteroidales S24.7 group exhibited an association with a diminished risk of osteomyelitis development. Conversely, the class Bacilli, class Bacteroidia, order Bacteroidales, order Lactobacillales, family Streptococcaceae, and genus Coprococcus3 displayed an increased risk of developing osteomyelitis. The MR outcomes for these seven taxa remained stable throughout a series of sensitivity analyses. Conclusion This study demonstrated a causal relationship between gut microbiota and osteomyelitis by Mendelian randomization. We hope that this study will provide a new direction for the treatment of osteomyelitis, which has a paucity of therapeutic options.
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Affiliation(s)
- Ran Xu
- Department of Urology, Zhongshan Hospital Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Si Li
- Department of Pediatric Surgery, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Ying Zhang
- Department of Urology, Zhongshan Hospital Xiamen University, The School of Clinical Medicine, Fujian Medical University, Xiamen, China
| | - Yue Pu
- Department of Urology, Zhongshan Hospital Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Guangcheng Luo
- Department of Urology, Zhongshan Hospital Xiamen University, School of Medicine, Xiamen University, Xiamen, China
- Department of Urology, Zhongshan Hospital Xiamen University, The School of Clinical Medicine, Fujian Medical University, Xiamen, China
| | - Xinjun Wang
- Department of Urology, Zhongshan Hospital Xiamen University, School of Medicine, Xiamen University, Xiamen, China
- Department of Urology, Zhongshan Hospital Xiamen University, The School of Clinical Medicine, Fujian Medical University, Xiamen, China
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3
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Oleszycka E, O’Brien EC, Freeley M, Lavelle EC, Long A. Bile acids induce IL-1α and drive NLRP3 inflammasome-independent production of IL-1β in murine dendritic cells. Front Immunol 2023; 14:1285357. [PMID: 38090554 PMCID: PMC10711081 DOI: 10.3389/fimmu.2023.1285357] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 11/01/2023] [Indexed: 12/18/2023] Open
Abstract
Bile acids are amphipathic molecules that are synthesized from cholesterol in the liver and facilitate intestinal absorption of lipids and nutrients. They are released into the small intestine upon ingestion of a meal where intestinal bacteria can modify primary into secondary bile acids. Bile acids are cytotoxic at high concentrations and have been associated with inflammatory diseases such as liver inflammation and Barrett's Oesophagus. Although bile acids induce pro-inflammatory signalling, their role in inducing innate immune cytokines and inflammation has not been fully explored to date. Here we demonstrate that the bile acids, deoxycholic acid (DCA) and chenodeoxycholic acid (CDCA) induce IL-1α and IL-1β secretion in vitro in primed bone marrow derived dendritic cells (BMDCs). The secretion of IL-1β was found not to require expression of NLRP3, ASC or caspase-1 activity; we can't rule out all inflammasomes. Furthermore, DCA and CDCA were shown to induce the recruitment of neutrophils and monocytes to the site of injection an intraperitoneal model of inflammation. This study further underlines a mechanistic role for bile acids in the pathogenesis of inflammatory diseases through stimulating the production of pro-inflammatory cytokines and recruitment of innate immune cells.
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Affiliation(s)
- Ewa Oleszycka
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Eoin C. O’Brien
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Michael Freeley
- School of Biotechnology, Dublin City University, Dublin, Ireland
| | - Ed C. Lavelle
- Adjuvant Research Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Aideen Long
- Department of Clinical Medicine, School of Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland
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Pang J, Vince JE. The role of caspase-8 in inflammatory signalling and pyroptotic cell death. Semin Immunol 2023; 70:101832. [PMID: 37625331 DOI: 10.1016/j.smim.2023.101832] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/20/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
The programmed cell death machinery exhibits surprising flexibility, capable of crosstalk and non-apoptotic roles. Much of this complexity arises from the diverse functions of caspase-8, a cysteine-aspartic acid protease typically associated with activating caspase-3 and - 7 to induce apoptosis. However, recent research has revealed that caspase-8 also plays a role in regulating the lytic gasdermin cell death machinery, contributing to pyroptosis and immune responses in contexts such as infection, autoinflammation, and T-cell signalling. In mice, loss of caspase-8 results in embryonic lethality from unrestrained necroptotic killing, while in humans caspase-8 deficiency can lead to an autoimmune lymphoproliferative syndrome, immunodeficiency, inflammatory bowel disease or, when it can't cleave its substrate RIPK1, early onset periodic fevers. This review focuses on non-canonical caspase-8 signalling that drives immune responses, including its regulation of inflammatory gene transcription, activation within inflammasome complexes, and roles in pyroptotic cell death. Ultimately, a deeper understanding of caspase-8 function will aid in determining whether, and when, targeting caspase-8 pathways could be therapeutically beneficial in human diseases.
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Affiliation(s)
- Jiyi Pang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia.
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5
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Guo W, Cui S, Tang X, Zhang Q, Zhao J, Mao B, Zhang H. Intestinal Microbiomics and Metabolomics Insights into the Hepatoprotective Effects of Lactobacillus paracasei CCFM1222 Against the Acute Liver Injury in Mice. Probiotics Antimicrob Proteins 2023; 15:1063-1077. [PMID: 36056292 DOI: 10.1007/s12602-022-09986-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2022] [Indexed: 11/25/2022]
Abstract
In recent years, acute liver injury (ALI) has received wide-range attention in the world due to its relatively high morbidity and mortality. This study aimed to explore the hepatoprotective effect of Lactobacillus paracasei CCFM1222 against lipopolysaccharide (LPS)-induced ALI mice and further elaborate its mechanism of action from the perspective of intestinal microbiomics and metabolomics. The results displayed that L. paracasei CCFM1222 pretreatment significantly decreased the serum ALT, and AST levels, inhibited the releases of hepatic TNF-α, IL-1β, and IL-6 levels, and activated the SOD, CAT, and GSH-Px activities in LPS-treated mice. The cecal short-chain fatty acid (SCFAs) levels were increased in LPS-treated mice with L. paracasei CCFM1222 pretreatment. In addition, L. paracasei CCFM1222 pretreatment remarkably shifted the intestinal microbiota composition, including the higher abundance of Faecalibaculum, Bifidobacterium, and lower abundance of the Prevotellaceae NK3B31 group, which is positively associated with the cecal propionic, butyric, valeric, isobutyric, and isovaleric acids. The metabolomics based on UPLC-QTOF/MS revealed that L. paracasei CCFM1222 pretreatment significantly regulated the composition of feces metabolites in LPS-treated mice, especially the potential biomarker-related butanoate metabolism, vitamin B6 metabolism, D-glutamine and D-glutamate metabolism, tryptophan metabolism, caffeine metabolism, arginine biosynthesis, arginine, and proline metabolism. Moreover, L. paracasei CCFM1222 pretreatment remarkably regulated the expression of gene-associated ALI (including Tlr4, Myd88, Nf-kβ, iNOS, Cox2, Iκ-Bα, Nrf2, and Sirt-1). In conclusion, these results suggest the possibility that L. paracasei CCFM1222 supplementation has beneficial effects on preventing the occurrence and development of ALI by inhibiting the inflammatory responses and altering intestinal microbiota composition and their metabolites.
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Affiliation(s)
- Weiling Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
| | - Shumao Cui
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
| | - Xin Tang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
| | - Qiuxiang Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
| | - Bingyong Mao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China.
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Lihu Avenue 1800, Wuxi, 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China
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Escobar-Chavarría O, Benitez-Guzman A, Jiménez-Vázquez I, Carrisoza-Urbina J, Arriaga-Pizano L, Huerta-Yépez S, Baay-Guzmán G, Gutiérrez-Pabello JA. Necrotic Cell Death and Inflammasome NLRP3 Activity in Mycobacterium bovis-Infected Bovine Macrophages. Cells 2023; 12:2079. [PMID: 37626889 PMCID: PMC10453650 DOI: 10.3390/cells12162079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Mycobacterium bovis is a facultative intracellular bacterium that produces cellular necrosis in granulomatous lesions in bovines. Although M. bovis-induced inflammation actively participates in granuloma development, its role in necrotic cell death and in bovine macrophages has not been fully explored. In this study, we evaluate the effect of M. bovis AN5 and its culture filtrate protein extract (CFPE) on inflammasome activation in bovine macrophages and its consequences on cell death. Our results show that both stimuli induce necrotic cell death starting 4 h after incubation. CFPE treatment and M. bovis infection also induce the maturation of IL-1β (>3000 pg/mL), oligomerization of ASC (apoptosis-associated speck-like protein containing CARD), and activation of caspase-1, following the canonical activation pathway of the NLRP3 inflammasome. Inhibiting the oligomerization of NLRP3 and caspase-1 decreases necrosis among the infected or CFPE-stimulated macrophages. Furthermore, histological lymph node sections of bovines naturally infected with M. bovis contained cleaved gasdermin D, mainly in macrophages and giant cells within the granulomas. Finally, the induction of cell death (apoptosis and pyroptosis) decreased the intracellular bacteria count in the infected bovine macrophages, suggesting that cell death helps to control the intracellular growth of the mycobacteria. Our results indicate that M. bovis induces pyroptosis-like cell death that is partially related to the NLRP3 inflammasome activation and that the cell death process could control bacterial growth.
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Affiliation(s)
- Omar Escobar-Chavarría
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Alejandro Benitez-Guzman
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Itzel Jiménez-Vázquez
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Jacobo Carrisoza-Urbina
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
| | - Lourdes Arriaga-Pizano
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Sara Huerta-Yépez
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - Guillermina Baay-Guzmán
- Unidad de Investigación en Enfermedades Oncológicas, Hospital Infantil de México, Federico Gómez, Mexico City 06720, Mexico; (S.H.-Y.); (G.B.-G.)
| | - José A. Gutiérrez-Pabello
- Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (O.E.-C.); (A.B.-G.); (I.J.-V.); (J.C.-U.)
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Hetrick R, Oliver M. Pediatric autoinflammatory bone disorders-a mini review with special focus on pathogenesis and inborn errors of immunity. Front Pediatr 2023; 11:1169659. [PMID: 37342528 PMCID: PMC10277822 DOI: 10.3389/fped.2023.1169659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 05/17/2023] [Indexed: 06/23/2023] Open
Abstract
Autoinflammatory bone disorders are a group of diseases characterized by sterile osteomyelitis. This includes chronic nonbacterial osteomyelitis and the monogenic forms, Majeed syndrome and deficiency of the interleukin-1 receptor antagonist. These disorders result from innate immune system dysregulation and cytokine imbalance that triggers inflammasome activation causing downstream osteoclastogenesis and excessive bone remodeling. In this review, we will summarize the immunopathogenesis of pediatric autoinflammatory bone diseases with a special focus on the genetics and inborn errors of immunity, while briefly touching on the clinical manifestations and management of each disease as well as areas for future research.
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Zhu L, Wang Z, Sun X, Yu J, Li T, Zhao H, Ji Y, Peng B, Du M. STAT3/Mitophagy Axis Coordinates Macrophage NLRP3 Inflammasome Activation and Inflammatory Bone Loss. J Bone Miner Res 2023; 38:335-353. [PMID: 36502520 DOI: 10.1002/jbmr.4756] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 11/06/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022]
Abstract
Signal transducer and activator of transcription 3 (STAT3), a cytokine-responsive transcription factor, is known to play a role in immunity and bone remodeling. However, whether and how STAT3 impacts macrophage NLR family pyrin domain containing 3 (NLRP3) inflammasome activation associated with inflammatory bone loss remains unknown. Here, STAT3 signaling is hyperactivated in macrophages in the context of both non-sterile and sterile inflammatory osteolysis, and this was highly correlated with the cleaved interleukin-1β (IL-1β) expression pattern. Strikingly, pharmacological inhibition of STAT3 markedly blocks macrophage NLRP3 inflammasome activation in vitro, thereby relieving inflammatory macrophage-amplified osteoclast formation and bone-resorptive activity. Mechanistically, STAT3 inhibition in macrophages triggers PTEN-induced kinase 1 (PINK1)-dependent mitophagy that eliminates dysfunctional mitochondria, reverses mitochondrial membrane potential collapse, and inhibits mitochondrial reactive oxygen species release, thus inactivating the NLRP3 inflammasome. In vivo, STAT3 inhibition effectively protects mice from both infection-induced periapical lesions and aseptic titanium particle-mediated calvarial bone erosion with potent induction of PINK1 and downregulation of inflammasome activation, macrophage infiltration, and osteoclast formation. This study reveals the regulatory role of the STAT3/mitophagy axis at the osteo-immune interface and highlights a potential therapeutic intervention to prevent inflammatory bone loss. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Lingxin Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zijun Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xiaoyue Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Jingjing Yu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Ting Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Huan Zhao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yaoting Ji
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Bin Peng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Minquan Du
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
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Pavliuchenko N, Duric I, Kralova J, Fabisik M, Spoutil F, Prochazka J, Kasparek P, Pokorna J, Skopcova T, Sedlacek R, Brdicka T. Molecular interactions of adaptor protein PSTPIP2 control neutrophil-mediated responses leading to autoinflammation. Front Immunol 2022; 13:1035226. [PMID: 36605205 PMCID: PMC9807597 DOI: 10.3389/fimmu.2022.1035226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/28/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Autoinflammatory diseases are characterized by dysregulation of innate immune system leading to spontaneous sterile inflammation. One of the well-established animal models of this group of disorders is the mouse strain Pstpip2cmo . In this strain, the loss of adaptor protein PSTPIP2 leads to the autoinflammatory disease chronic multifocal osteomyelitis. It is manifested by sterile inflammation of the bones and surrounding soft tissues of the hind limbs and tail. The disease development is propelled by elevated production of IL-1β and reactive oxygen species by neutrophil granulocytes. However, the molecular mechanisms linking PSTPIP2 and these pathways have not been established. Candidate proteins potentially involved in these mechanisms include PSTPIP2 binding partners, PEST family phosphatases (PEST-PTPs) and phosphoinositide phosphatase SHIP1. Methods To address the role of these proteins in PSTPIP2-mediated control of inflammation, we have generated mouse strains in which PEST-PTP or SHIP1 binding sites in PSTPIP2 have been disrupted. In these mouse strains, we followed disease symptoms and various inflammation markers. Results Our data show that mutation of the PEST-PTP binding site causes symptomatic disease, whereas mice lacking the SHIP1 interaction site remain asymptomatic. Importantly, both binding partners of PSTPIP2 contribute equally to the control of IL-1β production, while PEST-PTPs have a dominant role in the regulation of reactive oxygen species. In addition, the interaction of PEST-PTPs with PSTPIP2 regulates the production of the chemokine CXCL2 by neutrophils. Its secretion likely creates a positive feedback loop that drives neutrophil recruitment to the affected tissues. Conclusions We demonstrate that PSTPIP2-bound PEST-PTPs and SHIP1 together control the IL-1β pathway. In addition, PEST-PTPs have unique roles in the control of reactive oxygen species and chemokine production, which in the absence of PEST-PTP binding to PSTPIP2 shift the balance towards symptomatic disease.
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Affiliation(s)
- Nataliia Pavliuchenko
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia,Department of Cell Biology, Charles University, Faculty of Science, Prague, Czechia
| | - Iris Duric
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia,Department of Cell Biology, Charles University, Faculty of Science, Prague, Czechia
| | - Jarmila Kralova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Matej Fabisik
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Jan Prochazka
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia,Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Petr Kasparek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Jana Pokorna
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Tereza Skopcova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia,Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czechia
| | - Tomas Brdicka
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czechia,*Correspondence: Tomas Brdicka,
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Malireddi RS, Bynigeri RR, Kancharana B, Sharma BR, Burton AR, Pelletier S, Kanneganti TD. Determining distinct roles of IL-1α through generation of an IL-1α knockout mouse with no defect in IL-1β expression. Front Immunol 2022; 13:1068230. [PMID: 36505497 PMCID: PMC9729281 DOI: 10.3389/fimmu.2022.1068230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/10/2022] [Indexed: 11/25/2022] Open
Abstract
Interleukin 1α (IL-1α) and IL-1β are the founding members of the IL-1 cytokine family, and these innate immune inflammatory mediators are critically important in health and disease. Early studies on these molecules suggested that their expression was interdependent, with an initial genetic model of IL-1α depletion, the IL-1α KO mouse (Il1a-KOline1), showing reduced IL-1β expression. However, studies using this line in models of infection and inflammation resulted in contrasting observations. To overcome the limitations of this genetic model, we have generated and characterized a new line of IL-1α KO mice (Il1a-KOline2) using CRISPR-Cas9 technology. In contrast to cells from Il1a-KOline1, where IL-1β expression was drastically reduced, bone marrow-derived macrophages (BMDMs) from Il1a-KOline2 mice showed normal induction and activation of IL-1β. Additionally, Il1a-KOline2 BMDMs showed normal inflammasome activation and IL-1β expression in response to multiple innate immune triggers, including both pathogen-associated molecular patterns and pathogens. Moreover, using Il1a-KOline2 cells, we confirmed that IL-1α, independent of IL-1β, is critical for the expression of the neutrophil chemoattractant KC/CXCL1. Overall, we report the generation of a new line of IL-1α KO mice and confirm functions for IL-1α independent of IL-1β. Future studies on the unique functions of IL-1α and IL-1β using these mice will be critical to identify new roles for these molecules in health and disease and develop therapeutic strategies.
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11
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Grusanovic S, Danek P, Kuzmina M, Adamcova MK, Burocziova M, Mikyskova R, Vanickova K, Kosanovic S, Pokorna J, Reinis M, Brdicka T, Alberich‐Jorda M. Chronic inflammation decreases HSC fitness by activating the druggable Jak/Stat3 signaling pathway. EMBO Rep 2022; 24:e54729. [PMID: 36341527 PMCID: PMC9827550 DOI: 10.15252/embr.202254729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022] Open
Abstract
Chronic inflammation represents a major threat to human health since long-term systemic inflammation is known to affect distinct tissues and organs. Recently, solid evidence demonstrated that chronic inflammation affects hematopoiesis; however, how chronic inflammation affects hematopoietic stem cells (HSCs) on the mechanistic level is poorly understood. Here, we employ a mouse model of chronic multifocal osteomyelitis (CMO) to assess the effects of a spontaneously developed inflammatory condition on HSCs. We demonstrate that hematopoietic and nonhematopoietic compartments in CMO BM contribute to HSC expansion and impair their function. Remarkably, our results suggest that the typical features of murine multifocal osteomyelitis and the HSC phenotype are mechanistically decoupled. We show that the CMO environment imprints a myeloid gene signature and imposes a pro-inflammatory profile on HSCs. We identify IL-6 and the Jak/Stat3 signaling pathway as critical mediators. However, while IL-6 and Stat3 blockage reduce HSC numbers in CMO mice, only inhibition of Stat3 activity significantly rescues their fitness. Our data emphasize the detrimental effects of chronic inflammation on stem cell function, opening new venues for treatment.
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Affiliation(s)
- Srdjan Grusanovic
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Faculty of ScienceCharles UniversityPragueCzech Republic,Childhood Leukaemia Investigation PragueDepartment of Pediatric Haematology and Oncology2nd Faculty of MedicineCharles University in PragueUniversity Hospital MotolPragueCzech Republic
| | - Petr Danek
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Maria Kuzmina
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Miroslava K Adamcova
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Childhood Leukaemia Investigation PragueDepartment of Pediatric Haematology and Oncology2nd Faculty of MedicineCharles University in PragueUniversity Hospital MotolPragueCzech Republic
| | - Monika Burocziova
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Romana Mikyskova
- Department of Immunological and Tumor modelsInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Karolina Vanickova
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Sladjana Kosanovic
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Jana Pokorna
- Department of Leukocyte signalingInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Milan Reinis
- Department of Immunological and Tumor modelsInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Tomas Brdicka
- Department of Leukocyte signalingInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Meritxell Alberich‐Jorda
- Department of Hemato‐OncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic,Childhood Leukaemia Investigation PragueDepartment of Pediatric Haematology and Oncology2nd Faculty of MedicineCharles University in PragueUniversity Hospital MotolPragueCzech Republic
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12
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Yu HJ, Wang LJ, Huang K, Guo QF, Lin BY, Liu YY, Yu M, Ma GP. PPAR-γ agonist pioglitazone alleviates inflammatory response induced by lipopolysaccharides in osteoblast cells. J Orthop Res 2022; 40:2471-2479. [PMID: 35072290 DOI: 10.1002/jor.25279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 10/19/2021] [Accepted: 01/16/2022] [Indexed: 02/04/2023]
Abstract
Osteomyelitis is an acute or chronic inflammatory bone disease with a high disability rate. As an anti-inflammatory factor, peroxisome proliferator activated receptor-γ (PPAR-γ) is not only implicated in a variety of inflammatory responses but also regulates osteoblast differentiation and bone mass. However, the role of PPAR-γ in osteomyelitis is not fully understood. In the present study, we demonstrated that PPAR-γ showed a lower expression level in infected bone tissue of osteomyelitis patients as compared with uninfected bone tissue from nonosteomyelitis patients with fracture of the hip. We applied lipopolysaccharides (LPSs) in MC3T3-E1 osteoblast precursor cell line as an in vitro model for osteomyelitis. LPS treatment increased osteomyelitis-associated inflammatory cytokines such as interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), whereas PPAR-γ levels and cell viability in MC3T3-E1 cells were suppressed. PPAR-γ antagonist GW9662 further enhanced IL-6 and TNF-α levels, and decreased cell viability in the presence of LPS treatment. In contrast, PPAR-γ agonist pioglitazone antagonized the effect of LPS treatment in MC3T3-E1 cells. These findings suggest that PPAR-γ downregulation is associated with the inflammation and progression of osteomyelitis, and PPAR-γ agonist could serve as a therapeutic strategy to attenuate inflammatory responses. This study provides novel insights into the physiopathogenesis of osteomyelitis and future study is required to validate the findings in animal model and uncover the molecular mechanism of PPAR-γ-dependent anti-inflammation in osteoblasts.
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Affiliation(s)
- Hua-Jun Yu
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Lai-Jie Wang
- Department of Orthopaedics, Huai'An People's Hospital Of Hongze District Jiangsu Province, Huai'An, China
| | - Kai Huang
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Qiao-Feng Guo
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Bing-Yuan Lin
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Yi-Yang Liu
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Ming Yu
- Department of Orthopedics, Haihe Hospital of Tianjin University, Tianjin, China
| | - Gou-Ping Ma
- Department of Orthopaedics, Tongde Hospital of Zhejiang Province, Hangzhou, China
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13
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Sergi CM, Miller E, Demellawy DE, Shen F, Zhang M. Chronic recurrent multifocal osteomyelitis. A narrative and pictorial review. Front Immunol 2022; 13:959575. [PMID: 36072576 PMCID: PMC9441751 DOI: 10.3389/fimmu.2022.959575] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/27/2022] [Indexed: 11/30/2022] Open
Abstract
Chronic recurrent and multifocal osteomyelitis (CRMO) is a nonsporadic autoinflammatory disorder. Currently, it is diagnosed based on clinical, radiologic, pathological, and longitudinal data. Numerous aspects should be highlighted due to increased knowledge in imaging and immunology. We emphasize the use of whole-body MRI, which is a non-invasive diagnostic strategy. A literature review was carried out on longitudinal studies. Commonly, the mean age at diagnosis is 11 years, ranging between 3 and 17. The most common sites are the long bone metaphysis, particularly femoral and tibial metaphysis. In addition, the pelvis, spine, clavicle, and mandible may be involved. In long bones, the radiologic appearance can show typical structure, mixed lytic and sclerotic, sclerotic or lytic. It is frequently metaphyseal or juxta-physeal, with hyperostosis or periosteal thickening. The involvement of the vertebral skeleton is often multifocal. Therefore, whole-body MRI is essential in identifying subclinical lesions. CRMO is a polymorphic disorder in which whole-body MRI is beneficial to demonstrate subclinical edema. Vertebral collapse requires long-term monitoring.
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Affiliation(s)
- Consolato M. Sergi
- Anatomic Pathology Division, Children’s Hospital of Eastern Ontario (CHEO), Ottawa, ON, Canada
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
- Department of Orthopedics, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, China
- *Correspondence: Consolato M. Sergi,
| | - Elka Miller
- Medical Imaging Department, Children’s Hospital of Eastern Ontario (CHEO), University of Ottawa, Ottawa, ON, Canada
| | - Dina El Demellawy
- Anatomic Pathology Division, Children’s Hospital of Eastern Ontario (CHEO), Ottawa, ON, Canada
| | - Fan Shen
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
| | - Mingyong Zhang
- Department of Orthopedics, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, China
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14
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Gu B, Sun R, Fang X, Zhang J, Zhao Z, Huang D, Zhao Y, Zhao Y. Genome-Wide Association Study of Body Conformation Traits by Whole Genome Sequencing in Dazu Black Goats. Animals (Basel) 2022; 12:ani12050548. [PMID: 35268118 PMCID: PMC8908837 DOI: 10.3390/ani12050548] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Body conformation traits are economically important in the goat meat industry. Good growth performance in goats, including an accelerated growth rate, can improve carcass weight and meat yield. The identification of genetic variants associated with these traits provides a basis for the genetic improvement of growth performance. In this study, we measured six body conformation traits, including body height, body length, cannon circumference, chest depth, chest width, and heart girth. By a genome-wide association study of a Chinese meat goat breed, 53 significant single nucleotide polymorphisms and 42 candidate genes associated with these traits were detected. These findings improve our understanding of the genetic basis of body conformation traits in goats. Abstract Identifying associations between genetic markers and economic traits has practical benefits for the meat goat industry. To better understand the genomic regions and biological pathways contributing to body conformation traits of meat goats, a genome-wide association study was performed using Dazu black goats (DBGs), a Chinese indigenous goat breed. In particular, 150 DBGs were genotyped by whole-genome sequencing, and six body conformation traits, including body height (BH), body length (BL), cannon circumference (CC), chest depth (CD), chest width (CW), and heart girth (HG), were examined. In total, 53 potential SNPs were associated with these body conformation traits. A bioinformatics analysis was performed to evaluate the genes located close to the significant SNPs. Finally, 42 candidate genes (e.g., PSTPIP2, C7orf57, CCL19, FGF9, SGCG, FIGN, and SIPA1L) were identified as components of the genetic architecture underlying body conformation traits. Our results provide useful biological information for the improvement of growth performance and have practical applications for genomic selection in goats.
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Affiliation(s)
- Bowen Gu
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
| | - Ruifan Sun
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
| | - Xingqiang Fang
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
| | - Jipan Zhang
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
| | - Zhongquan Zhao
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
| | - Deli Huang
- Tengda Animal Husbandry Co., Ltd., Chongqing 402360, China;
| | - Yuanping Zhao
- Dazu County Agriculture and Rural Committee, Chongqing 402360, China;
| | - Yongju Zhao
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China; (B.G.); (R.S.); (X.F.); (J.Z.); (Z.Z.)
- Chongqing Key Laboratory of Herbivore Science, Chongqing 400715, China
- Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715, China
- Correspondence:
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15
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Place DE, Samir P, Malireddi RS, Kanneganti TD. Integrated stress response restricts macrophage necroptosis. Life Sci Alliance 2021; 5:5/1/e202101260. [PMID: 34764207 PMCID: PMC8605341 DOI: 10.26508/lsa.202101260] [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: 10/14/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/25/2022] Open
Abstract
Stress inhibits necroptosis in a PERK-dependent manner via reduced RIPK1-RIPK3-MLKL signaling, showing an integral mechanistic connection between stress responses and programmed cell death. The integrated stress response (ISR) regulates cellular homeostasis and cell survival following exposure to stressors. Cell death processes such as apoptosis and pyroptosis are known to be modulated by stress responses, but the role of the ISR in necroptosis is poorly understood. Necroptosis is an inflammatory, lytic form of cell death driven by the RIPK3-MLKL signaling axis. Here, we show that macrophages that have induced the ISR are protected from subsequent necroptosis. Consistent with a reduction in necroptosis, phosphorylation of RIPK1, RIPK3, and MLKL is reduced in macrophages pre-treated with ISR-inducing agents that are challenged with necroptosis-inducing triggers. The stress granule component DDX3X, which is involved in ISR-mediated regulation of pyroptosis, is not required for protecting ISR-treated cells from necroptosis. Disruption of stress granule assembly or knockdown of Perk restored necroptosis in pre-stressed cells. Together, these findings identify a critical role for the ISR in limiting necroptosis in macrophages.
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Affiliation(s)
- David E Place
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Parimal Samir
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
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16
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Starz E, Wzorek K, Folwarski M, Kaźmierczak-Siedlecka K, Stachowska L, Przewłócka K, Stachowska E, Skonieczna-Żydecka K. Reply to Cantarelli et al. Chronic Recurrent Multifocal Osteomyelitis Associated with Crohn Disease: A Potential Role of Exclusion Diet? Comment on "Starz et al. The Modification of the Gut Microbiota via Selected Specific Diets in Patients with Crohn's Disease. Nutrients 2021, 13, 2125". Nutrients 2021; 13:nu13114007. [PMID: 34836262 PMCID: PMC8624749 DOI: 10.3390/nu13114007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/02/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Eliza Starz
- Students’ Scientific Circle of Clinical Nutrition, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (E.S.); (K.W.)
| | - Karolina Wzorek
- Students’ Scientific Circle of Clinical Nutrition, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (E.S.); (K.W.)
| | - Marcin Folwarski
- Department of Clinical Nutrition and Dietetics, Medical University of Gdańsk, 80-211 Gdańsk, Poland
- Correspondence: ; Tel.: +48-58-349-27-23
| | | | - Laura Stachowska
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (L.S.); (K.S.-Ż.)
| | - Katarzyna Przewłócka
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
| | - Ewa Stachowska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland;
| | - Karolina Skonieczna-Żydecka
- Department of Biochemical Sciences, Pomeranian Medical University in Szczecin, 71-460 Szczecin, Poland; (L.S.); (K.S.-Ż.)
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17
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Christgen S, Tweedell RE, Kanneganti TD. Programming inflammatory cell death for therapy. Pharmacol Ther 2021; 232:108010. [PMID: 34619283 DOI: 10.1016/j.pharmthera.2021.108010] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/27/2021] [Accepted: 09/01/2021] [Indexed: 02/06/2023]
Abstract
Programmed cell death (PCD) is an essential part of organismal development and plays fundamental roles in host defense against pathogens and the maintenance of homeostasis. However, excess activation of PCD pathways has proven to be detrimental and can drive disease. Additionally, resistance to PCD can also contribute to disease development. Modulation of PCD, therefore, has great therapeutic potential in a wide range of diseases, including infectious, neurodegenerative, autoinflammatory, and metabolic diseases and cancer. Nevertheless, manipulation of cell death and inflammation for therapeutic intervention is a delicate process, highly specific to the context of the disease of interest, making the selection of the appropriate target molecule crucially important. Several PCD pathways are associated with innate immunity, including pyroptosis, apoptosis, necroptosis, and PANoptosis, which is defined as an inflammatory PCD pathway with key features of pyroptosis, apoptosis, and/or necroptosis that cannot be accounted for by any of these three PCD pathways alone. All of these PCD pathways are regulated by upstream sensors and signaling cascades that assemble multimeric complexes to serve as activation platforms for downstream molecules; these sensors and signaling molecules provide attractive target points for therapeutic intervention. Here, we discuss the molecular mechanisms of innate immune-mediated cell death in health and disease, with a particular focus on the molecules putatively involved in the formation of the PANoptosome and the induction of inflammatory cell death. Further, we discuss the implications and feasibility of targeting these molecules to improve disease outcomes, as well as current clinical approaches.
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Affiliation(s)
- Shelbi Christgen
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Rebecca E Tweedell
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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18
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Kralova J, Pavliuchenko N, Fabisik M, Ilievova K, Spoutil F, Prochazka J, Pokorna J, Sedlacek R, Brdicka T. The receptor-type protein tyrosine phosphatase CD45 promotes onset and severity of IL-1β-mediated autoinflammatory osteomyelitis. J Biol Chem 2021; 297:101131. [PMID: 34461100 PMCID: PMC8455366 DOI: 10.1016/j.jbc.2021.101131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 08/20/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
A number of human autoinflammatory diseases manifest with severe inflammatory bone destruction. Mouse models of these diseases represent valuable tools that help us to understand molecular mechanisms triggering this bone autoinflammation. The Pstpip2cmo mouse strain is among the best characterized of these; it harbors a mutation resulting in the loss of adaptor protein PSTPIP2 and development of autoinflammatory osteomyelitis. In Pstpip2cmo mice, overproduction of interleukin-1β (IL-1β) and reactive oxygen species by neutrophil granulocytes leads to spontaneous inflammation of the bones and surrounding soft tissues. However, the upstream signaling events leading to this overproduction are poorly characterized. Here, we show that Pstpip2cmo mice deficient in major regulator of Src-family kinases (SFKs) receptor-type protein tyrosine phosphatase CD45 display delayed onset and lower severity of the disease, while the development of autoinflammation is not affected by deficiencies in Toll-like receptor signaling. Our data also show deregulation of pro-IL-1β production by Pstpip2cmo neutrophils that are attenuated by CD45 deficiency. These data suggest a role for SFKs in autoinflammation. Together with previously published work on the involvement of protein tyrosine kinase spleen tyrosine kinase, they point to the role of receptors containing immunoreceptor tyrosine-based activation motifs, which after phosphorylation by SFKs recruit spleen tyrosine kinase for further signal propagation. We propose that this class of receptors triggers the events resulting in increased pro-IL-1β synthesis and disease initiation and/or progression.
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Affiliation(s)
- Jarmila Kralova
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Nataliia Pavliuchenko
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic; Charles University, Faculty of Science, Prague, Czech Republic
| | - Matej Fabisik
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic; Charles University, Faculty of Science, Prague, Czech Republic
| | - Kristyna Ilievova
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Jan Prochazka
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic; Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Jana Pokorna
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Radislav Sedlacek
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic; Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, Vestec, Czech Republic
| | - Tomas Brdicka
- Laboratory of Leukocyte Signaling, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic.
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19
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Smith RL, Goddard A, Boddapati A, Brooks S, Schoeman JP, Lack J, Leisewitz A, Ackerman H. Experimental Babesia rossi infection induces hemolytic, metabolic, and viral response pathways in the canine host. BMC Genomics 2021; 22:619. [PMID: 34399690 PMCID: PMC8369750 DOI: 10.1186/s12864-021-07889-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 07/13/2021] [Indexed: 12/02/2022] Open
Abstract
Background Babesia rossi is a leading cause of morbidity and mortality among the canine population of sub-Saharan Africa, but pathogenesis remains poorly understood. Previous studies of B. rossi infection were derived from clinical cases, in which neither the onset of infection nor the infectious inoculum was known. Here, we performed controlled B. rossi inoculations in canines and evaluated disease progression through clinical tests and whole blood transcriptomic profiling. Results Two subjects were administered a low inoculum (104 parasites) while three received a high (108 parasites). Subjects were monitored for 8 consecutive days; anti-parasite treatment with diminazene aceturate was administered on day 4. Blood was drawn prior to inoculation as well as every experimental day for assessment of clinical parameters and transcriptomic profiles. The model recapitulated natural disease manifestations including anemia, acidosis, inflammation and behavioral changes. Rate of disease onset and clinical severity were proportional to the inoculum. To analyze the temporal dynamics of the transcriptomic host response, we sequenced mRNA extracted from whole blood drawn on days 0, 1, 3, 4, 6, and 8. Differential gene expression, hierarchical clustering, and pathway enrichment analyses identified genes and pathways involved in response to hemolysis, metabolic changes, and several arms of the immune response including innate immunity, adaptive immunity, and response to viral infection. Conclusions This work comprehensively characterizes the clinical and transcriptomic progression of B. rossi infection in canines, thus establishing a large mammalian model of severe hemoprotozoal disease to facilitate the study of host-parasite biology and in which to test novel anti-disease therapeutics. The knowledge gained from the study of B. rossi in canines will not only improve our understanding of this emerging infectious disease threat in domestic dogs, but also provide insight into the pathobiology of human diseases caused by Babesia and Plasmodium species. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07889-4.
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Affiliation(s)
- Rachel L Smith
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, 20852, USA
| | - Amelia Goddard
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, Pretoria, 0110, South Africa
| | - Arun Boddapati
- NIAID Collaborative Bioinformatics Resource (NCBR), National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, 20894, USA.,Advanced Biomedical Computational Science (ABCS), Frederick National Laboratory for Cancer Research, Frederick, MD, 21701, USA
| | - Steven Brooks
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, 20852, USA
| | - Johan P Schoeman
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, Pretoria, 0110, South Africa
| | - Justin Lack
- NIAID Collaborative Bioinformatics Resource (NCBR), National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, 20894, USA.,Advanced Biomedical Computational Science (ABCS), Frederick National Laboratory for Cancer Research, Frederick, MD, 21701, USA
| | - Andrew Leisewitz
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, Pretoria, 0110, South Africa.
| | - Hans Ackerman
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Rockville, MD, 20852, USA.
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20
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Hierarchical Cell Death Program Disrupts the Intracellular Niche Required for Burkholderia thailandensis Pathogenesis. mBio 2021; 12:e0105921. [PMID: 34154417 PMCID: PMC8262894 DOI: 10.1128/mbio.01059-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Burkholderia infections can result in serious diseases with high mortality, such as melioidosis, and they are difficult to treat with antibiotics. Innate immunity is critical for cell-autonomous clearance of intracellular pathogens like Burkholderia by regulating programmed cell death. Inflammasome-dependent inflammatory cytokine release and cell death contribute to host protection against Burkholderia pseudomallei and Burkholderia thailandensis; however, the contribution of apoptosis and necroptosis to protection is not known. Here, we found that bone marrow-derived macrophages (BMDMs) lacking key components of pyroptosis died via apoptosis during infection. BMDMs lacking molecules required for pyroptosis, apoptosis, and necroptosis (PANoptosis), however, were significantly resistant to B. thailandensis-induced cell death until later stages of infection. Consequently, PANoptosis-deficient BMDMs failed to limit B. thailandensis-induced cell-cell fusion, which permits increased intercellular spread and replication compared to wild-type or pyroptosis-deficient BMDMs. Respiratory B. thailandensis infection resulted in higher mortality in PANoptosis-deficient mice than in pyroptosis-deficient mice, indicating that, in the absence of pyroptosis, apoptosis is essential for efficient control of infection in vivo. Together, these findings suggest both pyroptosis and apoptosis are necessary for host-mediated control of Burkholderia infection. IMPORTANCE Burkholderia infections result in a high degree of mortality when left untreated; therefore, understanding the host immune response required to control infection is critical. In this study, we found a hierarchical cell death program utilized by infected cells to disrupt the intracellular niche of Burkholderia thailandensis, which limits bacterial intercellular spread, host cell-cell fusion, and bacterial replication. In macrophages, combined loss of key PANoptosis components results in extensive B. thailandensis infection-induced cell-cell fusion, bacterial replication, and increased cell death at later stages of infection compared with both wild-type (WT) and pyroptosis-deficient cells. During respiratory infection, mortality was increased in PANoptosis-deficient mice compared to pyroptosis-deficient mice, identifying an essential role for multiple cell death pathways in controlling B. thailandensis infection. These findings advance our understanding of the physiological role of programmed cell death in controlling Burkholderia infection.
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Chronic nonbacterial osteomyelitis (CNO) and chronic recurrent multifocal osteomyelitis (CRMO). J Transl Autoimmun 2021; 4:100095. [PMID: 33870159 PMCID: PMC8040271 DOI: 10.1016/j.jtauto.2021.100095] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/22/2021] [Accepted: 03/10/2021] [Indexed: 01/01/2023] Open
Abstract
Chronic nonbacterial osteomyelitis (CNO) is an inflammatory bone disorder that most frequently affects children and adolescents. Chronic recurrent multifocal osteomyelitis (CRMO) is a severe form of CNO, usually characterized by symmetrical inflammatory bone lesions and its waxing and waning character. Sometimes severe and chronic pain can significantly affect the quality of life and psychosocial development of individuals affected. In the absence of prospectively tested and widely accepted diagnostic criteria or disease biomarkers, CNO remains a diagnosis of exclusion, and infections, malignancy and other differentials require consideration (1). The pathophysiology of CNO is not fully understood, but imbalanced cytokine expression and increased inflammasome activation in monocytes from CNO patients contribute to a pro-inflammatory phenotype that contributes to bone inflammation (2). Currently, no medications are licensed for the use in CNO. Most patients show at least some response to nonsteroidal anti-inflammatory drugs, others require more aggressive treatment that can include corticosteroids, cytokine-blocking agents and/or bisphosphonates (3). While under the care of an experienced team and sufficient treatment, the prognosis is good, but some patients will develop sequalae which can include vertebral compression fractures (1). CNO is an autoinflammatory bone disorder mostly affecting children and adolescents. Dysregulated cytokine expression and pathological activation of inflammasomes play a central role. Treatment is based on experience from case series and expert consensus treatment plans. Understanding the exact molecular pathophysiology will allow patient stratification and individualized treatment.
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Majeed Syndrome: A Review of the Clinical, Genetic and Immunologic Features. Biomolecules 2021; 11:biom11030367. [PMID: 33670882 PMCID: PMC7997317 DOI: 10.3390/biom11030367] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/19/2022] Open
Abstract
Majeed syndrome is a multi-system inflammatory disorder affecting humans that presents with chronic multifocal osteomyelitis, congenital dyserythropoietic anemia, with or without a neutrophilic dermatosis. The disease is an autosomal recessive disorder caused by mutations in LPIN2, the gene encoding the phosphatidic acid phosphatase LIPIN2. It is exceedingly rare. There are only 24 individuals from 10 families with genetically confirmed Majeed syndrome reported in the literature. The early descriptions of Majeed syndrome reported severely affected children with recurrent fevers, severe multifocal osteomyelitis, failure to thrive, and marked elevations of blood inflammatory markers. As more affected families have been identified, it has become clear that there is significant phenotypic variability. Data supports that disruption of the phosphatidic acid phosphatase activity in LIPIN2 results in immune dysregulation due to aberrant activation of the NLRP3 inflammasome and overproduction of proinflammatory cytokines including IL-1β, however, these findings did not explain the bone phenotype. Recent studies demonstrate that LPIN2 deficiency drives pro-inflammatory M2-macrophages and enhances osteoclastogenesis which suggest a critical role of lipin-2 in controlling homeostasis at the growth plate in an inflammasome-independent manner. While there are no approved medications for Majeed syndrome, pharmacologic blockade of the interleukin-1 pathway has been associated with rapid clinical improvement.
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Abstract
PURPOSE OF REVIEW The aim of this article is to review recent findings regarding the diagnosis and treatment of chronic recurrent multifocal osteomyelitis (CRMO). RECENT FINDINGS An adequate understanding of pathophysiology along with the new advances in MRI imaging make it possible to determine the extent of disease and establish early treatment. TNF-α inhibitors and bisphosphonates have shown to be a well-tolerated and efficient treatment for CRMO providing both symptomatic relief and normalization of bone morphology. SUMMARY The results of recent studies suggest that a better knowledge of the genetic and molecular factors will allow early diagnosis and the development of more effective individualized treatments in the future.
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Place DE, Lee S, Kanneganti TD. PANoptosis in microbial infection. Curr Opin Microbiol 2021; 59:42-49. [PMID: 32829024 PMCID: PMC7438227 DOI: 10.1016/j.mib.2020.07.012] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/17/2020] [Accepted: 07/26/2020] [Indexed: 02/07/2023]
Abstract
The immune system has evolved multiple mechanisms to restrict microbial infections and regulate inflammatory responses. Without appropriate regulation, infection-induced inflammatory pathology can be deadly. The innate immune system recognizes the microbial molecules conserved in many pathogens and engages a rapid response by producing inflammatory mediators and activating programmed cell death pathways, including pyroptosis, apoptosis, and necroptosis. Activation of pattern recognition receptors, in combination with inflammatory cytokine-induced signaling through death domain-containing receptors, initiates a highly interconnected cell death process called PANoptosis (pyroptosis, apoptosis, necroptosis). Broadly speaking, PANoptosis is critical for restricting a wide range of pathogens (including bacteria, viruses, fungi, and parasites), which we describe in this review. We propose that re-examining the role of cell death and inflammatory cytokines through the lens of PANoptosis will advance our understanding of host-pathogen evolution and may reveal new treatment strategies for controlling a wide range of infectious diseases.
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Affiliation(s)
- David E Place
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - SangJoon Lee
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
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25
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Pellegrini C, Martelli A, Antonioli L, Fornai M, Blandizzi C, Calderone V. NLRP3 inflammasome in cardiovascular diseases: Pathophysiological and pharmacological implications. Med Res Rev 2021; 41:1890-1926. [PMID: 33460162 DOI: 10.1002/med.21781] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/30/2020] [Accepted: 12/15/2020] [Indexed: 12/11/2022]
Abstract
Growing evidence points out the importance of nucleotide-binding oligomerization domain leucine-rich repeat and pyrin domain-containing protein 3 (NLRP3) inflammasome in the pathogenesis of cardiovascular diseases (CVDs), including hypertension, myocardial infarct (MI), ischemia, cardiomyopathies (CMs), heart failure (HF), and atherosclerosis. In this regard, intensive research efforts both in humans and in animal models of CVDs are being focused on the characterization of the pathophysiological role of NLRP3 inflammasome signaling in CVDs. In addition, clinical and preclinical evidence is coming to light that the pharmacological blockade of NLRP3 pathways with drugs, including novel chemical entities as well as drugs currently employed in the clinical practice, biologics and phytochemicals, could represent a suitable therapeutic approach for prevention and management of CVDs. On these bases, the present review article provides a comprehensive overview of clinical and preclinical studies about the role of NLRP3 inflammasome in the pathophysiology of CVDs, including hypertension, MI, ischemic injury, CMs, HF and atherosclerosis. In addition, particular attention has been focused on current evidence on the effects of drugs, biologics, and phytochemicals, targeting different steps of inflammasome signaling, in CVDs.
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Affiliation(s)
| | - Alma Martelli
- Department of Pharmacy, University of Pisa, Pisa, Italy
| | - Luca Antonioli
- Department of Clinical and Experimental Medicine, Unit of Pharmacology and Pharmacovigilance, University of Pisa, Pisa, Italy
| | - Matteo Fornai
- Department of Clinical and Experimental Medicine, Unit of Pharmacology and Pharmacovigilance, University of Pisa, Pisa, Italy
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, Unit of Pharmacology and Pharmacovigilance, University of Pisa, Pisa, Italy
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26
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Place DE, Kanneganti TD. The innate immune system and cell death in autoinflammatory and autoimmune disease. Curr Opin Immunol 2020; 67:95-105. [PMID: 33242752 DOI: 10.1016/j.coi.2020.10.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/09/2020] [Accepted: 10/23/2020] [Indexed: 12/16/2022]
Abstract
The innate immune system, the first line of defense against pathogens and host tissue damage, initiates pro-inflammatory responses which, when dysregulated, promote inflammation to drive a broad range of autoimmune diseases. Immunomodulatory therapies have been developed to successfully treat several autoimmune diseases, but still many others lack effective treatments. Here, we explore recent advances in how the innate immune system contributes to autoinflammation, from the innate immune sensors that initiate immune responses to how this system regulates the activation of programmed cell death pathways including pyroptosis, apoptosis, necroptosis, and PANoptosis, which involves machinery from the pyroptotic, apoptotic, and necroptotic pathways. Recent advances in our understanding of innate immunity raise important considerations for developing new inflammatory disease treatments that target innate immune signaling and programmed cell death pathways.
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Affiliation(s)
- David E Place
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
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27
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Yu C, Zhang C, Kuang Z, Zheng Q. The Role of NLRP3 Inflammasome Activities in Bone Diseases and Vascular Calcification. Inflammation 2020; 44:434-449. [PMID: 33215255 PMCID: PMC7985100 DOI: 10.1007/s10753-020-01357-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/24/2020] [Accepted: 10/02/2020] [Indexed: 02/07/2023]
Abstract
Continuous stimulation of inflammation is harmful to tissues of an organism. Inflammatory mediators not only have an effect on metabolic and inflammatory bone diseases but also have an adverse effect on certain genetic and periodontal diseases associated with bone destruction. Inflammatory factors promote vascular calcification in various diseases. Vascular calcification is a pathological process similar to bone development, and vascular diseases play an important role in the loss of bone homeostasis. The NLRP3 inflammasome is an essential component of the natural immune system. It can recognize pathogen-related molecular patterns or host-derived dangerous signaling molecules, recruit, and activate the pro-inflammatory protease caspase-1. Activated caspase-1 cleaves the precursors of IL-1β and IL-18 to produce corresponding mature cytokines or recognizes and cleaves GSDMD to mediate cell pyroptosis. In this review, we discuss the role of NLRP3 inflammasome in bone diseases and vascular calcification caused by sterile or non-sterile inflammation and explore potential treatments to prevent bone loss.
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Affiliation(s)
- Chenyang Yu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Caihua Zhang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Zhihui Kuang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Qiang Zheng
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China. .,Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
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28
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Coronaviruses: Innate Immunity, Inflammasome Activation, Inflammatory Cell Death, and Cytokines. Trends Immunol 2020; 41:1083-1099. [PMID: 33153908 PMCID: PMC7561287 DOI: 10.1016/j.it.2020.10.005] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/07/2020] [Accepted: 10/08/2020] [Indexed: 12/11/2022]
Abstract
The innate immune system acts as the first line of defense against pathogens, including coronaviruses (CoVs). Severe acute respiratory syndrome (SARS)-CoV and Middle East respiratory syndrome (MERS)-CoV are epidemic zoonotic CoVs that emerged at the beginning of the 21st century. The recently emerged virus SARS-CoV-2 is a novel strain of CoV that has caused the coronavirus 2019 (COVID-19) pandemic. Scientific advancements made by studying the SARS-CoV and MERS-CoV outbreaks have provided a foundation for understanding pathogenesis and innate immunity against SARS-CoV-2. In this review, we focus on our present understanding of innate immune responses, inflammasome activation, inflammatory cell death pathways, and cytokine secretion during SARS-CoV, MERS-CoV, and SARS-CoV-2 infection. We also discuss how the pathogenesis of these viruses influences these biological processes.
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29
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Wang Y, Ashbaugh AG, Dikeman DA, Zhang J, Ackerman NE, Kim SE, Falgons C, Ortines RV, Liu H, Joyce DP, Alphonse MP, Dillen CA, Thompson JM, Archer NK, Miller LS. Interleukin-1β and tumor necrosis factor are essential in controlling an experimental orthopedic implant-associated infection. J Orthop Res 2020; 38:1800-1809. [PMID: 31975434 PMCID: PMC7354231 DOI: 10.1002/jor.24608] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/15/2020] [Accepted: 01/22/2020] [Indexed: 02/04/2023]
Abstract
Orthopedic implant-associated infection (OIAI) is a major complication that leads to implant failure. In preclinical models of Staphylococcus aureus OIAI, osteomyelitis and septic arthritis, interleukin-1α (IL-1α), IL-1β, and tumor necrosis factor (TNF) are induced, but whether they have interactive or distinctive roles in host defense are unclear. Herein, a S. aureus OIAI model was performed in mice deficient in IL-1α, IL-1β, or TNF. Mice deficient in IL-1β or TNF (to a lesser extent) but not IL-1α had increased bacterial burden at the site of the OIAI throughout the 28-day experiment. IL-1β and TNF had a combined and critical role in host defense as mice deficient in both IL-1R and TNF (IL-1R/TNF-deficient mice) had a 40% mortality rate, which was associated with markedly increased bacterial burden at the site of the OIAI infection. Finally, IL-1α- and IL-1β-deficient mice had impaired neutrophil recruitment whereas IL-1β-, TNF-, and IL-1R/TNF-deficient mice all had impaired recruitment of both neutrophils and monocytes. Therefore, IL-1β and TNF contributed to host defense against S. aureus OIAI and neutrophil recruitment was primarily mediated by IL-1β and monocyte recruitment was mediated by both IL-1β and TNF.
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Affiliation(s)
- Yu Wang
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Alyssa G. Ashbaugh
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Dustin A. Dikeman
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Jeffrey Zhang
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Nicole E. Ackerman
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Sophie E. Kim
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Christian Falgons
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Roger V. Ortines
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Haiyun Liu
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Daniel P. Joyce
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Martin Prince Alphonse
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Carly A. Dillen
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - John M. Thompson
- Department of Orthopaedic Surgery, Johns Hopkins University
School of Medicine, Baltimore, MD, 21287, USA
| | - Nathan K. Archer
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA
| | - Lloyd S. Miller
- Department of Dermatology, Johns Hopkins University School
of Medicine, Baltimore, MD, 21231, USA,Department of Orthopaedic Surgery, Johns Hopkins University
School of Medicine, Baltimore, MD, 21287, USA,Department of Medicine, Division of Infectious Diseases,
Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA,Department of Materials Science and Engineering, Johns
Hopkins University, Baltimore, MD, 21218, USA.,Janssen Research and Development, Spring House, PA, 19477,
USA.,Address correspondence to Lloyd S. Miller,
, Johns Hopkins Department of
Dermatology, Cancer Research Building II, Suite 205, 1550 Orleans Street,
Baltimore, MD 21231, Phone: (410) 955-8662, Fax: (410) 955-8645
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30
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Boers N, Ekkelenkamp MB, Hindriks-Keegstra AW, Kruyt MC, Spierings J. Cutibacterium acnes and autoinflammatory bone disease: Case series of three patients. Clin Immunol 2020; 219:108540. [PMID: 32681976 DOI: 10.1016/j.clim.2020.108540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Nadine Boers
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, the Netherlands.
| | - Miquel B Ekkelenkamp
- Department of Medical Microbiology, University Medical Center Utrecht, the Netherlands
| | | | - Moyo C Kruyt
- Department of Orthopaedic Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Julia Spierings
- Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, the Netherlands
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31
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Zhao Y, Ferguson PJ. Chronic non-bacterial osteomyelitis and autoinflammatory bone diseases. Clin Immunol 2020; 216:108458. [PMID: 32389739 PMCID: PMC7338233 DOI: 10.1016/j.clim.2020.108458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Yongdong Zhao
- Department of Pediatrics, University of Washington, Seattle, WA, United States of America
| | - Polly J Ferguson
- Stead Family Department of Pediatrics, Carver College of Medicine, University of Iowa, Iowa City, IA, United States of America.
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32
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Ricciuto A, Sherman PM, Laxer RM. Gut microbiota in chronic inflammatory disorders: A focus on pediatric inflammatory bowel diseases and juvenile idiopathic arthritis. Clin Immunol 2020; 215:108415. [DOI: 10.1016/j.clim.2020.108415] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/06/2020] [Accepted: 04/06/2020] [Indexed: 12/16/2022]
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33
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Rong H, He X, Wang L, Bai M, Jin T, Wang Y, Yang W, He Y, Yuan D. Association between IL1B polymorphisms and the risk of rheumatoid arthritis. Int Immunopharmacol 2020; 83:106401. [DOI: 10.1016/j.intimp.2020.106401] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/18/2022]
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34
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Kralova J, Drobek A, Prochazka J, Spoutil F, Fabisik M, Glatzova D, Borna S, Pokorna J, Skopcova T, Angelisova P, Gregor M, Kovarik P, Sedlacek R, Brdicka T. Dysregulated NADPH Oxidase Promotes Bone Damage in Murine Model of Autoinflammatory Osteomyelitis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:1607-1620. [PMID: 32024700 DOI: 10.4049/jimmunol.1900953] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 01/13/2020] [Indexed: 12/13/2022]
Abstract
Autoinflammatory diseases are characterized by dysregulation of the innate immune system, leading to spontaneous inflammation. Pstpip2cmo mouse strain is a well-characterized model of this class of disorders. Because of the mutation leading to the lack of adaptor protein PSTPIP2, these animals suffer from autoinflammatory chronic multifocal osteomyelitis similar to several human syndromes. Current evidence suggests that it is driven by hyperproduction of IL-1β by neutrophil granulocytes. In this study, we show that in addition to IL-1β, PSTPIP2 also negatively regulates pathways governing reactive oxygen species generation by neutrophil NOX2 NADPH oxidase. Pstpip2cmo neutrophils display highly elevated superoxide production in response to a range of stimuli. Inactivation of NOX2 NADPH oxidase in Pstpip2cmo mice did not affect IL-1β levels, and the autoinflammatory process was initiated with similar kinetics. However, the bone destruction was almost completely alleviated, suggesting that dysregulated NADPH oxidase activity is a key factor promoting autoinflammatory bone damage in Pstpip2cmo mice.
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Affiliation(s)
- Jarmila Kralova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Ales Drobek
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
- Laboratory of Adaptive Immunity, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Jan Prochazka
- Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, 25242 Vestec, Czech Republic
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 25242 Vestec, Czech Republic
| | - Frantisek Spoutil
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 25242 Vestec, Czech Republic
| | - Matej Fabisik
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
- Faculty of Science, Charles University, 12800 Prague, Czech Republic
| | - Daniela Glatzova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
- Faculty of Science, Charles University, 12800 Prague, Czech Republic
| | - Simon Borna
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
- Faculty of Science, Charles University, 12800 Prague, Czech Republic
| | - Jana Pokorna
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Tereza Skopcova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Pavla Angelisova
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Martin Gregor
- Laboratory of Integrative Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic; and
| | - Pavel Kovarik
- Max F. Perutz Laboratories, University of Vienna, 1030 Vienna, Austria
| | - Radislav Sedlacek
- Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, 25242 Vestec, Czech Republic
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the Czech Academy of Sciences, 25242 Vestec, Czech Republic
| | - Tomas Brdicka
- Laboratory of Leukocyte Signalling, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic;
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Vinaik R, Abdullahi A, Barayan D, Jeschke MG. NLRP3 inflammasome activity is required for wound healing after burns. Transl Res 2020; 217:47-60. [PMID: 31843468 PMCID: PMC7036017 DOI: 10.1016/j.trsl.2019.11.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022]
Abstract
Survival of burn patients is contingent on effective wound healing, a complex process that requires coordinated responses of myeloid cells and inflammatory pathways. NLRP3, which serves as a platform for secretion of proinflammatory cytokines, is implicated as a central regulator of wound healing. However, its role during the acute dermal and epidermal regeneration in the context of burns is unknown. Wild-type (WT) and NLRP3-/- mice were exposed to a 30% TBSA scald burn. Gene expression was conducted via real-time polymerase chain reaction. Trichrome staining was used to assess collagen deposition and granulation tissue formation. F4/80 immunostaining compared macrophage infiltration. Flow cytometric analysis was used to characterize skin macrophage distribution and profile. NLRP3, IL1β and IL18 expression was upregulated in skin after burn, and these changes were nonexistent in NLRP3-/-. NLRP3-/- had decreased expression of proinflammatory cytokines, chemokines, inflammatory markers, and growth factors at 3 days (P < 0.05). NLRP3-/- burn skin demonstrated significantly less macrophage infiltration and higher expression of anti-inflammatory markers Arg1 and Fizz1 (P < 0.05) compared to WT. Trichrome staining showed decreased collagen deposition compared to WT. We show that NLRP3 is protective in burn wound healing, primarily through production of inflammatory mediators, macrophage recruitment, and polarization to a proinflammatory phenotype. Our findings highlight a central role of NLRP3 in wound healing through regulation of inflammation and macrophage polarization after burns.
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Affiliation(s)
| | | | | | - Marc G Jeschke
- Department of Surgery, Division of Plastic Surgery, University of Toronto, Toronto, Canada; Department of Immunology, University of Toronto, Toronto, Canada; Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Toronto, Canada; Sunnybrook Research Institute, Toronto, Canada.
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Abstract
Caspases are a family of conserved cysteine proteases that play key roles in programmed cell death and inflammation. In multicellular organisms, caspases are activated via macromolecular signaling complexes that bring inactive procaspases together and promote their proximity-induced autoactivation and proteolytic processing. Activation of caspases ultimately results in programmed execution of cell death, and the nature of this cell death is determined by the specific caspases involved. Pioneering new research has unraveled distinct roles and cross talk of caspases in the regulation of programmed cell death, inflammation, and innate immune responses. In-depth understanding of these mechanisms is essential to foster the development of precise therapeutic targets to treat autoinflammatory disorders, infectious diseases, and cancer. This review focuses on mechanisms governing caspase activation and programmed cell death with special emphasis on the recent progress in caspase cross talk and caspase-driven gasdermin D-induced pyroptosis.
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Affiliation(s)
- Sannula Kesavardhana
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA; , ,
| | - R K Subbarao Malireddi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA; , ,
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Christgen S, Kanneganti TD. Inflammasomes and the fine line between defense and disease. Curr Opin Immunol 2020; 62:39-44. [PMID: 31837596 PMCID: PMC7067632 DOI: 10.1016/j.coi.2019.11.007] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/15/2019] [Indexed: 12/16/2022]
Abstract
Recognition of invading pathogens and execution of defensive responses are crucial steps in successfully combating infectious diseases. Inflammasomes are a group of diverse, signal-transducing complexes with key roles in both processes. While the responses mediated by inflammasomes are vital to host defense, aberrations in inflammasome regulation or activity can lead to the development of autoimmune and sterile inflammatory diseases, including cancer. The field of inflammasome research has rapidly expanded to identify novel regulatory pathways, new inflammasome components, and the mechanistic details of the activation of these complexes. In this review, we discuss recent insights into the regulation of inflammasomes by interferon regulatory factor proteins, newly discovered mechanisms of activation for the NLRP1b and NLRP6 inflammasomes, and recent studies exploring the viability of inflammasome-modulating immunotherapies.
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Affiliation(s)
- Shelbi Christgen
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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Dasari TK, Geiger R, Karki R, Banoth B, Sharma BR, Gurung P, Burton A, Kanneganti TD. The nonreceptor tyrosine kinase SYK drives caspase-8/NLRP3 inflammasome-mediated autoinflammatory osteomyelitis. J Biol Chem 2019; 295:3394-3400. [PMID: 31719149 DOI: 10.1074/jbc.ra119.010623] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/05/2019] [Indexed: 12/31/2022] Open
Abstract
Chronic recurrent multifocal osteomyelitis (CRMO) in humans can be modeled in Pstpip2cmo mice, which carry a missense mutation in the proline-serine-threonine phosphatase-interacting protein 2 (Pstpip2) gene. As cmo disease in mice, the experimental model analogous to human CRMO, is mediated specifically by IL-1β and not by IL-1α, delineating the molecular pathways contributing to pathogenic IL-1β production is crucial to developing targeted therapies. In particular, our earlier findings support redundant roles of NLR family pyrin domain-containing 3 (NLRP3) and caspase-1 with caspase-8 in instigating cmo However, the signaling components upstream of caspase-8 and pro-IL-1β cleavage in Pstpip2cmo mice are not well-understood. Therefore, here we investigated the signaling pathways in these mice and discovered a central role of a nonreceptor tyrosine kinase, spleen tyrosine kinase (SYK), in mediating osteomyelitis. Using several mutant mouse strains, immunoblotting, and microcomputed tomography, we demonstrate that absent in melanoma 2 (AIM2), receptor-interacting serine/ threonine protein kinase 3 (RIPK3), and caspase recruitment domain-containing protein 9 (CARD9) are each dispensable for osteomyelitis induction in Pstpip2cmo mice, whereas genetic deletion of Syk completely abrogates the disease phenotype. We further show that SYK centrally mediates signaling upstream of caspase-1 and caspase-8 activation and principally up-regulates NF-κB and IL-1β signaling in Pstpip2cmo mice, thereby inducing cmo These results provide a rationale for directly targeting SYK and its downstream signaling components in CRMO.
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Affiliation(s)
- Tejasvi K Dasari
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105; School of Medicine, Baylor College of Medicine, Houston, Texas 77030
| | - Rechel Geiger
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105
| | - Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105
| | - Balaji Banoth
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105
| | - Bhesh Raj Sharma
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105
| | - Prajwal Gurung
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105; Inflammation Program, University of Iowa, Iowa City, Iowa 52241
| | - Amanda Burton
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105
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Alippe Y, Mbalaviele G. Omnipresence of inflammasome activities in inflammatory bone diseases. Semin Immunopathol 2019; 41:607-618. [PMID: 31520179 PMCID: PMC6814643 DOI: 10.1007/s00281-019-00753-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 08/29/2019] [Indexed: 12/17/2022]
Abstract
The inflammasomes are intracellular protein complexes that are assembled in response to a variety of perturbations including infections and injuries. Failure of the inflammasomes to rapidly clear the insults or restore tissue homeostasis can result in chronic inflammation. Recurring inflammation is also provoked by mutations that cause the constitutive assembly of the components of these protein platforms. Evidence suggests that chronic inflammation is a shared mechanism in bone loss associated with aging, dysregulated metabolism, autoinflammatory, and autoimmune diseases. Mechanistically, inflammatory mediators promote bone resorption while suppressing bone formation, an imbalance which over time leads to bone loss and increased fracture risk. Thus, while acute inflammation is important for the maintenance of bone integrity, its chronic state damages this tissue. In this review, we discuss the role of the inflammasomes in inflammation-induced osteolysis.
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Affiliation(s)
- Yael Alippe
- Division of Bone and Mineral Diseases, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8301, St. Louis, MO, 63110, USA
| | - Gabriel Mbalaviele
- Division of Bone and Mineral Diseases, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8301, St. Louis, MO, 63110, USA.
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40
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NLRP3 gain-of-function in CD4 + T lymphocytes ameliorates experimental autoimmune encephalomyelitis. Clin Sci (Lond) 2019; 133:1901-1916. [PMID: 31471462 DOI: 10.1042/cs20190506] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/27/2019] [Accepted: 08/30/2019] [Indexed: 12/21/2022]
Abstract
NLRP3 inflammasome [NLR (nucleotide-binding domain, leucine-rich repeat containing protein) Pyrin-domain-containing 3 ] functions as an innate sensor of several PAMPs and DAMPs (pathogen- and damage-associated molecular patterns). It has been also reported as a transcription factor related to Th2 pattern, although its role in the adaptive immunity has been controversial, mainly because the studies were performed using gene deletion approaches. In the present study, we have investigated the NLRP3 gain-of-function in the context of encephalomyelitis autoimmune disease (EAE), considered to be a Th1- and Th17-mediated disease. We took advantage of an animal model with NLRP3 gain-of-function exclusively to T CD4+ lymphocytes (CD4CreNLRP3fl/fl). These mice presented reduced clinical score, accompanied by less infiltrating T CD4+ cells expressing both IFN-γ and IL-17 at the central nervous system (CNS) during the peak of the disease. However, besides NLRP3 gain-of-function in lymphocytes, these mice lack NLRP3 expression in non-T CD4+ cells. Therefore, in order to circumvent this deficiency, we transferred naive CD4+ T cells from WT, NLRP3-/- or CD4CreNLRP3fl/fl into Rag-1-/- mice and immunized them with MOG35-55 Likewise, the animals repopulated with CD4CreNLRP3fl/fl T CD4+ cells presented reduced clinical score and decreased IFN-γ production at the peak of the disease. Additionally, primary effector CD4+ T cells derived from these mice presented reduced glycolytic profile, a metabolic profile compatible with Th2 cells. Finally, naive CD4+ T cells from CD4CreNLRP3fl/fl mice under a Th2-related cytokine milieu cocktail exhibited in vitro an increased IL-4 and IL-13 production. Conversely, naive CD4+ T cells from CD4CreNLRP3fl/fl mice under Th1 differentiation produced less IFN-γ and T-bet. Altogether, our data evidence that the NLRP3 gain-of-function promotes a Th2-related response, a pathway that could be better explored in the treatment of multiple sclerosis.
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41
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Young S, Sharma N, Lee JH, Chitu V, Neumeister V, Sohr E, Stanley ER, Hedrich CM, Craig AWB. Mast cells enhance sterile inflammation in chronic nonbacterial osteomyelitis. Dis Model Mech 2019; 12:dmm.040097. [PMID: 31416928 PMCID: PMC6737947 DOI: 10.1242/dmm.040097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/21/2019] [Indexed: 12/19/2022] Open
Abstract
Chronic nonbacterial osteomyelitis (CNO) is an autoinflammatory bone disease, and patients with active or recurrent bone inflammation at multiple sites are diagnosed with chronic recurrent multifocal osteomyelitis (CRMO). The Chronic multifocal osteomyelitis (CMO) mouse model develops IL-1β-driven sterile bone lesions reminiscent of severe CRMO. The goal of this study was to evaluate the potential involvement of mast cells in CMO/CRMO. Here, we show that mast cells accumulate in inflamed tissues from CMO mice and that mast cell protease Mcpt1 can be detected in the peripheral blood. A transgenic model of connective tissue mast cell depletion (Mcpt5-Cre:Rosa26-Stopfl/fl-DTa) was crossed with CMO mice and the resulting mice (referred to as CMO/MC–) showed a significant delay in disease onset compared with age-matched CMO mice. At 5-6 months of age, CMO/MC– mice had fewer bone lesions and immune infiltration in the popliteal lymph nodes that drain the affected tissues. In bone marrow-derived mast cell cultures from CMO mice, cytokine production in response to the alarmin IL-33 was elevated compared with wild-type cultures. To test the relevance of mast cells to human CRMO, we tested serum samples from a cohort of healthy controls and from CRMO patients at diagnosis. Interestingly, mast cell chymase was elevated in CRMO patients as well as in patients with oligoarticular juvenile arthritis. Tryptase-positive mast cells were also detected in bone lesions from CRMO patients and patients with bacterial osteomyelitis. Together, our results identify mast cells as cellular contributors to bone inflammation in CMO/CRMO and provide rationale for further study of mast cells as therapeutic targets. Summary: This paper reports that mast cells promote bone loss in an autoinflammatory disease model and that mast cell mediators were detected in autoinflammatory disease patient samples.
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Affiliation(s)
- Stephanie Young
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Namit Sharma
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Jae Hoon Lee
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Violeta Chitu
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Volker Neumeister
- Departments of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Dresden 01307, Germany
| | - Elisabeth Sohr
- Pediatric Rheumatology and Immunology, Children's Hospital Dresden, Technical University Dresden, Dresden 01307, Germany
| | - E Richard Stanley
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Christian M Hedrich
- Pediatric Rheumatology and Immunology, Children's Hospital Dresden, Technical University Dresden, Dresden 01307, Germany.,Department of Women's & Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool L14 5AB, UK.,Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust Hospital, Liverpool L14 5AB, UK
| | - Andrew W B Craig
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
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Sulijaya B, Takahashi N, Yamazaki K. Host modulation therapy using anti-inflammatory and antioxidant agents in periodontitis: A review to a clinical translation. Arch Oral Biol 2019; 105:72-80. [PMID: 31288144 DOI: 10.1016/j.archoralbio.2019.07.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/26/2019] [Accepted: 07/02/2019] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To highlight the shifting paradigm of periodontitis, describe mechanism of periodontal bone destruction, and propose an updated host modulation therapy (HMT) strategy. To add further clinical relevance, related studies investigating the efficacy of several HMT agents in periodontitis will be discussed. DESIGN Literature searches were conducted from articles published in PubMed using keywords "periodontal disease AND periodontitis AND host modulation therapy AND anti-inflammatory AND antioxidant", and then the findings were comprehensively summarized and elaborated. RESULT Accumulating evidence indicates that periodontitis is no longer defined solely as a pathogen-induced disease; rather, it is now recognized as a consequence of uncontrolled immune response and oxidative stress leading to periodontal tissue damage. Although periodontopathic bacteria initiate the disease, inflammation and oxidative stress were reported to be the main causes for the severity of tissue destruction. Thus, since the concept of periodontitis has shifted, our approach to its management needs to be adjusted to accommodate the latest paradigm. Nowadays, the modulation of inflammation and oxidative stress is considered a target of HMT. HMT agents, such as probiotics, anti-inflammatory drugs, anti-chemokines, lipid mediators, and bio-active fatty acids, have been extensively investigated for their remarkable functions in modulating the immune response and providing antioxidant effects. CONCLUSION Findings from in vitro, in vivo, and human studies frequently demonstrate positive association by the administration of HMT in periodontitis. HMT strategy targeted on anti-inflammatory and antioxidant in periodontitis might serve as an excellent therapeutic approach to reach the level of clinical benefit.
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Affiliation(s)
- Benso Sulijaya
- Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan; Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan; Department of Periodontology, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
| | - Naoki Takahashi
- Division of Periodontology, Department of Oral Biological Science, Niigata University Faculty of Dentistry, Niigata, Japan; Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuhisa Yamazaki
- Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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Place DE, Kanneganti TD. Cell death-mediated cytokine release and its therapeutic implications. J Exp Med 2019; 216:1474-1486. [PMID: 31186281 PMCID: PMC6605758 DOI: 10.1084/jem.20181892] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/20/2019] [Accepted: 05/23/2019] [Indexed: 12/19/2022] Open
Abstract
Targeting apoptosis to treat diseases has seen tremendous success over the past decades. More recently, alternative forms of regulated cell death, including pyroptosis and necroptosis, have been described. Understanding the molecular cascades regulating both pyroptosis and necroptosis will yield even more targets to treat diseases. These lytic forms of cell death are distinct from apoptosis due to their characteristic lysis and release of cellular components that promote disease or direct a beneficial immune response. In this review, we focus on how pyroptosis and necroptosis, which release potent immune cytokines such as IL-1 and IL-18, contribute to various diseases. We also consider the important role that the executioners of these cell death pathways, GSDMD and MLKL, play in the progression of inflammatory diseases. Crosstalk between the different cell death pathways likely plays a major role physiologically. New therapeutic strategies targeting these specific molecules hold enormous potential for managing inflammatory diseases.
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Affiliation(s)
- David E Place
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN
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Osteoimmunology: evolving concepts in bone-immune interactions in health and disease. Nat Rev Immunol 2019; 19:626-642. [PMID: 31186549 DOI: 10.1038/s41577-019-0178-8] [Citation(s) in RCA: 370] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2019] [Indexed: 12/14/2022]
Abstract
In terrestrial vertebrates, bone tissue constitutes the 'osteoimmune' system, which functions as a locomotor organ and a mineral reservoir as well as a primary lymphoid organ where haematopoietic stem cells are maintained. Bone and mineral metabolism is maintained by the balanced action of bone cells such as osteoclasts, osteoblasts and osteocytes, yet subverted by aberrant and/or prolonged immune responses under pathological conditions. However, osteoimmune interactions are not restricted to the unidirectional effect of the immune system on bone metabolism. In recent years, we have witnessed the discovery of effects of bone cells on immune regulation, including the function of osteoprogenitor cells in haematopoietic stem cell regulation and osteoblast-mediated suppression of haematopoietic malignancies. Moreover, the dynamic reciprocal interactions between bone and malignancies in remote organs have attracted attention, extending the horizon of osteoimmunology. Here, we discuss emerging concepts in the osteoimmune dialogue in health and disease.
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Panicker N, Sarkar S, Harischandra DS, Neal M, Kam TI, Jin H, Saminathan H, Langley M, Charli A, Samidurai M, Rokad D, Ghaisas S, Pletnikova O, Dawson VL, Dawson TM, Anantharam V, Kanthasamy AG, Kanthasamy A. Fyn kinase regulates misfolded α-synuclein uptake and NLRP3 inflammasome activation in microglia. J Exp Med 2019; 216:1411-1430. [PMID: 31036561 PMCID: PMC6547864 DOI: 10.1084/jem.20182191] [Citation(s) in RCA: 152] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/14/2019] [Accepted: 03/22/2019] [Indexed: 01/04/2023] Open
Abstract
Persistent microglia-mediated neuroinflammation is a major pathophysiological contributor to the progression of Parkinson's disease (PD), but the cell-signaling mechanisms governing chronic neuroinflammation are not well understood. Here, we show that Fyn kinase, in conjunction with the class B scavenger receptor CD36, regulates the microglial uptake of aggregated human α-synuclein (αSyn), which is the major component of PD-associated Lewy bodies. αSyn can effectively mediate LPS-independent priming and activation of the microglial NLRP3 inflammasome. Fyn kinase regulates both of these processes; it mediates PKCδ-dependent NF-κB-p65 nuclear translocation, leading to inflammasome priming, and facilitates αSyn import into microglia, contributing to the generation of mitochondrial reactive oxygen species and consequently to inflammasome activation. In vivo experiments using A53T and viral-αSyn overexpression mouse models as well as human PD neuropathological results further confirm the role of Fyn in NLRP3 inflammasome activation. Collectively, our study identifies a novel Fyn-mediated signaling mechanism that amplifies neuroinflammation in PD.
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Affiliation(s)
- Nikhil Panicker
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Souvarish Sarkar
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Dilshan S Harischandra
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Matthew Neal
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Tae-In Kam
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Huajun Jin
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Hariharan Saminathan
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Monica Langley
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Adhithiya Charli
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Manikandan Samidurai
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Dharmin Rokad
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Shivani Ghaisas
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Olga Pletnikova
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Valina L Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ted M Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Vellareddy Anantharam
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Anumantha G Kanthasamy
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
| | - Arthi Kanthasamy
- Parkinson Disorders Research Program, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA
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Yu Y, Zhang Y, Wu J, Sun Y, Xiong Z, Niu F, Lei L, Du S, Chen P, Yang Z. Genetic polymorphisms in IL1B predict susceptibility to steroid-induced osteonecrosis of the femoral head in Chinese Han population. Osteoporos Int 2019; 30:871-877. [PMID: 30852631 DOI: 10.1007/s00198-019-04835-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 01/02/2019] [Indexed: 01/23/2023]
Abstract
UNLABELLED The purpose of this research was to examine if the IL1B gene polymorphism has impact on the risk of steroid-induced ONFH in Chinese population. We found that IL1B rs1143630 decreased the SANFH's risk and IL1B rs2853550 increased the risk of steroid-induced ONFH. So, we guess that IL1B gene influences the genetic susceptibility of steroid-induced ONFH. INTRODUCTION Genetic polymorphisms in IL1B gene could be related in the pathogenesis of osteonecrosis. Discusses on the relationship between the IL1B gene and steroid-induced osteonecrosis of the femoral head (steroid-induced ONFH) is still less in Chinese Han population. So, in this research, we want to examine whether the IL1B gene polymorphism has impact on the risk of steroid-induced ONFH in Chinese population. METHODS A total of 286 steroid-induced ONFH patients and 441 controls were recruited, and seven SNPs (rs2853550, rs1143643, rs3136558, rs1143630, rs1143627, rs16944, and rs1143623) in IL1B gene were selected; unconditional logistic regression analysis was used to research the influence on the risk of steroid-induced ONFH. Functional annotations of IL1B variants were performed by RegulomeDB and HaploReg. RESULTS rs1143630 (A>C) in the IL1B gene decreased the risk of steroid-induced ONFH in the allele model (OR = 0.69, 95%CI 0.51-0.93, p = 0.014). Further genetic model analyses found that IL1B rs2853550 AG genotype increased the risk of steroid-induced ONFH compared with the people who are carriers of the IL1B rs2853550 GG genotype (OR = 1.69, 95%CI 1.16-2.46, p = 0.012). In the dominant model, IL1B rs1143630 GG-GT genotype decreased the risk of steroid-induced ONFH (OR = 0.62, 95%CI 0.44-0.87, p = 0.0051). And further haplotype analysis was performed, while the result was not significant. Using RegulomeDB and HaploReg, rs2853550 is likely to affect TF binding, any motif and DNase peak. CONCLUSIONS We guess that IL1B gene influences the genetic susceptibility of steroid-induced ONFH.
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Affiliation(s)
- Y Yu
- Department of Clinical Laboratory, HongHui Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, 710054, Shaanxi, China
| | - Y Zhang
- Department of Orthopedics, Suizhou Hospital, Hubei University Of Medicine, Suizhou, 441300, Hubei, China
| | - J Wu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Y Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Z Xiong
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - F Niu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - L Lei
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - S Du
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - P Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education, School of Life Sciences, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Z Yang
- Department of Osteonecrosis and Joint Reconstruction Ward, HongHui Affiliated Hospital of Xi'an Jiaotong University College of Medicine, #555 Youyi East Road, Xi'an, 710054, Shaanxi, China.
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Putnam NE, Fulbright LE, Curry JM, Ford CA, Petronglo JR, Hendrix AS, Cassat JE. MyD88 and IL-1R signaling drive antibacterial immunity and osteoclast-driven bone loss during Staphylococcus aureus osteomyelitis. PLoS Pathog 2019; 15:e1007744. [PMID: 30978245 PMCID: PMC6481883 DOI: 10.1371/journal.ppat.1007744] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/24/2019] [Accepted: 04/01/2019] [Indexed: 01/18/2023] Open
Abstract
Staphylococcus aureus is able to infect virtually all organ systems and is a frequently isolated etiologic agent of osteomyelitis, a common and debilitating invasive infection of bone. Treatment of osteomyelitis requires invasive surgical procedures and prolonged antibiotic therapy, yet is frequently unsuccessful due to extensive pathogen-induced bone damage that can limit antibiotic penetration and immune cell influx to the infectious focus. We previously established that S. aureus triggers profound alterations in bone remodeling in a murine model of osteomyelitis, in part through the production of osteolytic toxins. However, staphylococcal strains lacking osteolytic toxins still incite significant bone destruction, suggesting that host immune responses are also major drivers of pathologic bone remodeling during osteomyelitis. The objective of this study was to identify host immune pathways that contribute to antibacterial immunity during S. aureus osteomyelitis, and to define how these immune responses alter bone homeostasis and contribute to bone destruction. We specifically focused on the interleukin-1 receptor (IL-1R) and downstream adapter protein MyD88 given the prominent role of this signaling pathway in both antibacterial immunity and osteo-immunologic crosstalk. We discovered that while IL-1R signaling is necessary for local control of bacterial replication during osteomyelitis, it also contributes to bone loss during infection. Mechanistically, we demonstrate that S. aureus enhances osteoclastogenesis of myeloid precursors in vitro, and increases the abundance of osteoclasts residing on bone surfaces in vivo. This enhanced osteoclast abundance translates to trabecular bone loss, and is dependent on intact IL-1R signaling. Collectively, these data define IL-1R signaling as a critical component of the host response to S. aureus osteomyelitis, but also demonstrate that IL-1R-dependent immune responses trigger collateral bone damage through activation of osteoclast-mediated bone resorption.
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Affiliation(s)
- Nicole E. Putnam
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Laura E. Fulbright
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Jacob M. Curry
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Caleb A. Ford
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Jenna R. Petronglo
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Andrew S. Hendrix
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - James E. Cassat
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, United States of America
- Vanderbilt Institute for Infection, Immunology and Inflammation (VI4), Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
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48
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Interleukin-1 Beta Gene Polymorphism rs16944 May Associate with Increased Susceptibility to Extremity Chronic Osteomyelitis in Chinese Han Population. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7483537. [PMID: 30949508 PMCID: PMC6425336 DOI: 10.1155/2019/7483537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/16/2019] [Accepted: 01/31/2019] [Indexed: 01/10/2023]
Abstract
Background Previous studies had indicated that interleukin-1 beta (IL-1β) gene single nucleotide polymorphisms (SNPs) associate with different inflammatory diseases. However, potential links between these polymorphisms and susceptibility to extremity chronic osteomyelitis (COM) remain unclear. This study aimed to investigate relationships between IL-1β gene polymorphisms (rs16944, rs1143627, rs1143634, and rs2853550) and risks of developing extremity COM in Chinese Han population. Methods Altogether 233 extremity COM patients and 200 healthy controls were genotyped for the four tag SNPs of the IL-1β gene using the SNapShot genotyping method. Comparisons were performed regarding genotype distribution, mutant allele frequency, and four genetic models (dominant, recessive, homozygous, and heterozygous models) of the four SNPs between the two groups. Results Significant associations were identified between rs16944 polymorphism and the risk of developing COM by dominant model (P = 0.026, OR = 1.698, 95% CI 1.065-2.707) and heterozygous model (P = 0.030, OR = 1.733, 95% CI 1.055-2.847). Although no statistical differences were found of rs1143627 polymorphism between the two groups, there existed a trend that rs1143627 may be linked to an elevated risk of developing COM by outcomes of dominant (P = 0.061), homozygous (P = 0.080) and heterozygous (P = 0.095) models. However, no statistical correlations were found between rs1143634 and rs2853550 polymorphisms and susceptibility to COM in Chinese Han population. Conclusions To our knowledge, we reported for the first time that IL-1β gene rs16944 polymorphism may contribute to the increased susceptibility to extremity COM in Chinese Han population, with genotype of AG as a risk factor.
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49
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Fujita H, Ochi M, Ono M, Aoyama E, Ogino T, Kondo Y, Ohuchi H. Glutathione accelerates osteoclast differentiation and inflammatory bone destruction. Free Radic Res 2019; 53:226-236. [PMID: 30741054 DOI: 10.1080/10715762.2018.1563782] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Chronic inflammation associated with bone tissues often destructs bones, which is essentially performed by osteoclasts in the presence of immunoregulatory molecules. Hence, regulating osteoclastogenesis is crucial to develop therapeutics for bone-destructive inflammatory diseases. It is believed that reactive oxygen species (ROS) are involved in receptor activator of NF-κB (RANK) ligand (RANKL)-induced osteoclast differentiation, and, therefore, glutathione (GSH), the most abundant endogenous antioxidant, suppresses osteoclast differentiation and bone resorption by RANKL. Interestingly, GSH also contributes to inflammatory responses, and the effects of GSH on osteoclast differentiation and bone destruction under inflammatory conditions have not yet been determined. Here, we investigated how GSH affects inflammatory cytokine-stimulated osteoclast differentiation in vitro and in a mouse model of inflammatory bone destruction. We found that GSH significantly promoted TNFα-stimulated osteoclast formation, while an inhibitor of GSH synthesis, buthionine sulfoximine, suppressed it. GSH facilitated the nuclear localisation of the nuclear factor of activated T cells c1 (NFATc1) protein, a master regulator of osteoclastogenesis, as well as the expression of osteoclast marker genes in a dose-dependent manner. N-acetylcysteine, a substrate of GSH synthesis, also stimulated osteoclast formation and NFATc1 nuclear localisation. GSH did not suppress cell death after osteoclast differentiation. In mouse calvaria injected with lipopolysaccharide, GSH treatment resulted in a fivefold increase in the osteolytic lesion area. These results indicate that GSH accelerates osteoclast differentiation and inflammatory bone destruction, suggesting GSH appears to be an important molecule in the mechanisms responsible for inflammatory bone destruction by osteoclasts.
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Affiliation(s)
- Hirofumi Fujita
- a Department of Cytology and Histology , Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama , Japan
| | - Masahiko Ochi
- a Department of Cytology and Histology , Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama , Japan
| | - Mitsuaki Ono
- b Department of Molecular Biology and Biochemistry , Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama , Japan
| | - Eriko Aoyama
- c Advanced Research Center for Oral and Craniofacial Sciences , Okayama University Dental School , Okayama , Japan
| | - Tetsuya Ogino
- d Department of Nursing Science, Faculty of Health and Welfare Science , Okayama Prefectural University , Okayama , Japan
| | - Yoichi Kondo
- e Department of Anatomy and Cell Biology, Faculty of Medicine , Osaka Medical College , Takatsuki , Japan
| | - Hideyo Ohuchi
- a Department of Cytology and Histology , Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama , Japan
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50
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Ranson N, Veldhuis M, Mitchell B, Fanning S, Cook AL, Kunde D, Eri R. NLRP3-Dependent and -Independent Processing of Interleukin (IL)-1β in Active Ulcerative Colitis. Int J Mol Sci 2018; 20:ijms20010057. [PMID: 30583612 PMCID: PMC6337576 DOI: 10.3390/ijms20010057] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/11/2018] [Accepted: 12/18/2018] [Indexed: 02/06/2023] Open
Abstract
A contributing factor in the development of ulcerative colitis (UC) and Crohn’s disease (CD) is the disruption of innate and adaptive signaling pathways due to aberrant cytokine production. The cytokine, interleukin (IL)-1β, is highly inflammatory and its production is tightly regulated through transcriptional control and both inflammasome-dependent and inflammasome- independent proteolytic cleavage. In this study, qRT-PCR, immunohistochemistry, immunofluorescence confocal microscopy were used to (1) assess the mRNA expression of NLRP3, IL-1β, CASP1 and ASC in paired biopsies from UC and CD patient, and (2) the colonic localization and spatial relationship of NLRP3 and IL-1β in active and quiescent disease. NLRP3 and IL-1β were found to be upregulated in active UC and CD. During active disease, IL-1β was localized to the infiltrate of lamina propria immune cells, which contrasts with the near-exclusive epithelial cell layer expression during non-inflammatory conditions. In active disease, NLRP3 was consistently expressed within the neutrophils and other immune cells of the lamina propria and absent from the epithelial cell layer. The disparity in spatial localization of IL-1β and NLRP3, observed only in active UC, which is characterized by a neutrophil-dominated lamina propria cell population, implies inflammasome-independent processing of IL-1β. Consistent with other acute inflammatory conditions, these results suggest that blocking both caspase-1 and neutrophil-derived serine proteases may provide an additional therapeutic option for treating active UC.
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Affiliation(s)
- Nicole Ranson
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Mark Veldhuis
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Brent Mitchell
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Scott Fanning
- Launceston General Hospital, Launceston, Tasmania 7250, Australia.
| | - Anthony L Cook
- Wicking Dementia Research and Education Centre, Faculty of Health, University of Tasmania, Hobart, Tasmania 7000, Australia.
| | - Dale Kunde
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, Tasmania 7250, Australia.
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