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Song Y, Chung J. Zingerone-Induced Autophagy Suppresses IL-1β Production by Increasing the Intracellular Killing of Aggregatibacter actinomycetemcomitans in THP-1 Macrophages. Biomedicines 2023; 11:2130. [PMID: 37626627 PMCID: PMC10452316 DOI: 10.3390/biomedicines11082130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Periodontitis is caused by the inflammation of tooth-supporting tissue by pathogens such as Aggregatibacter actinomycetemcomitans. Interleukin-1β (IL-1β), a pro-inflammatory cytokine, triggers a series of inflammatory reactions and promotes bone resorption. The aim of this study was to examine the molecular mechanism and anti-inflammatory function of zingerone, a dietary phenolic found in Zingiber officinale, on periodontal inflammation induced by A. actinomycetemcomitans. Zingerone attenuated A. actinomycetemcomitans-induced nitric oxide (NO) production by inhibiting the expression of inducible nitric oxide synthase (iNOS) in THP-1 macrophages. Zingerone also inhibited the expression of tumor necrosis factor (TNF)-α, IL-1β, and their signal pathway molecules including the toll-like receptor (TLR)/mitogen-activated protein kinase (MAPKase). In particular, zingerone suppressed the expression of absent in melanoma 2 (AIM2) inflammasome components on IL-1β production. Moreover, zingerone enhanced autophagosome formation and the expressions of autophagy-associated molecules. Interestingly, zingerone reduced the intracellular survival of A. actinomycetemcomitans. This was blocked by an autophagy inhibitor, which reversed the decrease in IL-1β production by zingerone. Finally, zingerone alleviated alveolar bone absorption in an A. actnomycetemcomitans-induced periodontitis mice model. Our data suggested that zingerone has potential use as a treatment for periodontal inflammation induced by A. actinomycetemcomitans.
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Affiliation(s)
- Yuri Song
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan-si 50612, Republic of Korea;
- Oral Genomics Research Center, Pusan National University, Yangsan-si 50612, Republic of Korea
| | - Jin Chung
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan-si 50612, Republic of Korea;
- Oral Genomics Research Center, Pusan National University, Yangsan-si 50612, Republic of Korea
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Khambu B, Cai G, Liu G, Bailey NT, Mercer AA, Baral K, Ma M, Chen X, Li Y, Yin XM. NRF2 transcriptionally regulates Caspase-11 expression to activate HMGB1 release by Autophagy-deficient hepatocytes. Cell Death Discov 2023; 9:270. [PMID: 37507374 PMCID: PMC10382497 DOI: 10.1038/s41420-023-01495-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 07/30/2023] Open
Abstract
Injury or stress can induce intracellular translocation and release of nuclear HMGB1, a DAMP molecule known to participate in inflammation and other pathological processes. Active release of HMGB1 from stimulated macrophages can be mediated by inflammasomes, which cleave Gasdermin D to form pores on cytoplasmic membranes. We previously had shown that active release of HMGB1 from autophagy deficient hepatocytes also depended on the inflammasome but how the inflammasome was activated was not known. Here we report that persistent activation of transcription factor NRF2 under the autophagy deficient condition led to transcriptional upregulation of Caspase-11 expression, which could then activate the CASPASE-1inflammasome. Using chromatin immunoprecipitation (CHIP) and luciferase-based reporter assays, we show that NRF2 directly binds to the Caspase-11 promoter and transcriptionally increase the expression of Caspase-11. Genetic deletion of Caspase-11 in autophagy-deficient livers represses the release of HMGB1 and its pathological consequence, ductular cell proliferation. Consistently, deletion of NLRP3, which can activate CASPASE-1 mediated inflammasomes under other types of signals, did not prevent HMGB1 release and ductular cell proliferation in autophagy deficient livers. Surprisingly, while cleavage of GASDEMIN D occurred in autophagy-deficient livers its deletion did not prevent the HMGB1 release, suggesting that CASPASE-11-mediated inflammasome activation may also engage in a different mechanism for HMGB1 release by the autophagy deficient hepatocytes. Collectively, this work reveals the novel role of NRF2 in transcriptional upregulation of Caspase-11 and in inflammasome activation to promote active release of HMGB via a non-Gasdermin D mediated avenue.
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Affiliation(s)
- Bilon Khambu
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA.
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Genxiang Cai
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety; Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Gang Liu
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Niani Tiaye Bailey
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA
| | - Arissa A Mercer
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA
| | - Kamal Baral
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA
| | - Michelle Ma
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA
| | - Xiaoyun Chen
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Yu Li
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety; Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xiao-Ming Yin
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine, New Orleans, LO, USA.
- Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
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Ma Y, Zhao R, Guo H, Tong Q, Langdon WY, Liu W, Zhang J, Zhang J. Cytosolic LPS-induced caspase-11 oligomerization and activation is regulated by extended synaptotagmin 1. Cell Rep 2023; 42:112726. [PMID: 37393619 PMCID: PMC10528594 DOI: 10.1016/j.celrep.2023.112726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/16/2023] [Accepted: 06/14/2023] [Indexed: 07/04/2023] Open
Abstract
Caspase-11 (Casp-11) is known to induce pyroptosis and defends against cytosol-invading bacterial pathogens, but its regulation remains poorly defined. Here, we identified extended synaptotagmin 1 (E-Syt1), an endoplasmic reticulum protein, as a key regulator of Casp-11 oligomerization and activation. Macrophages lacking E-Syt1 exhibited reduced production of interleukin-1β (IL-1β) and impaired pyroptosis upon cytosolic lipopolysaccharide (LPS) delivery and cytosol-invasive bacterial infection. Moreover, cleavage of Casp-11 and its downstream substrate gasdermin D were significantly diminished in ESyt1-/- macrophages. Upon LPS stimulation, E-Syt1 underwent oligomerization and bound to the p30 domain of Casp-11 via its synaptotagmin-like mitochondrial lipid-binding protein (SMP) domain. E-Syt1 oligomerization and its interaction with Casp-11 facilitated Casp-11 oligomerization and activation. Notably, ESyt1-/- mice were susceptible to infection by cytosol-invading bacteria Burkholderia thailandensis while being resistant to LPS-induced endotoxemia. These findings collectively suggest that E-Syt1 may serve as a platform for Casp-11 oligomerization and activation upon cytosolic LPS sensing.
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Affiliation(s)
- Yilei Ma
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, P.R. China; Department of Pathology, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang, P.R. China.
| | - Ru Zhao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, P.R. China; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang, P.R. China
| | - Hui Guo
- Department of Pathology, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA
| | - Qingchao Tong
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, P.R. China; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang, P.R. China
| | - Wallace Y Langdon
- School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia
| | - Weiwei Liu
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Jun Zhang
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, P.R. China; Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Hangzhou, Zhejiang, P.R. China.
| | - Jian Zhang
- Department of Pathology, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA.
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Zhang W, Liu Z, Zhu J, Liu Z, Zhang Y, Qin G, Ren J, Qu X. Bioorthogonal Disruption of Pyroptosis Checkpoint for High-Efficiency Pyroptosis Cancer Therapy. J Am Chem Soc 2023. [PMID: 37486170 DOI: 10.1021/jacs.3c04180] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Pyroptosis is an inflammatory form of programmed cell death that holds great promise in cancer therapy. However, autophagy as the crucial pyroptosis checkpoint and the self-protective mechanism of cancer cells significantly weakens the therapeutic efficiency. Here, a bioorthogonal pyroptosis nanoregulator is constructed to induce pyroptosis and disrupt the checkpoint, enabling high-efficiency pyroptosis cancer therapy. The nanoregulator allows the in situ synthesis and accumulation of the photosensitizer PpIX in the mitochondria of cancer cells to directly produce mitochondrial ROS, thus triggering pyroptosis. Meanwhile, the in situ generated autophagy inhibitor via palladium-catalyzed bioorthogonal chemistry can disrupt the pyroptosis checkpoint to boost the pyroptosis efficacy. With the biomimetic cancer cell membrane coating, this platform for modulating pyroptosis presents specificity to cancer cells and poses no harm to normal tissue, resulting in a highly efficient and safe antitumor treatment. To our knowledge, this is the first report on a disrupting intrinsic protective mechanism of cancer cells for tumor pyroptosis therapy. This work highlights that autophagy as a checkpoint plays a key regulative role in pyroptosis therapy, which would motivate the future design of therapeutic regimens.
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Affiliation(s)
- Wenting Zhang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhengwei Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiawei Zhu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenqi Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yu Zhang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Geng Qin
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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Shi M, Tang C, Wu JX, Ji BW, Gong BM, Wu XH, Wang X. Mass Spectrometry Detects Sphingolipid Metabolites for Discovery of New Strategy for Cancer Therapy from the Aspect of Programmed Cell Death. Metabolites 2023; 13:867. [PMID: 37512574 PMCID: PMC10384871 DOI: 10.3390/metabo13070867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Sphingolipids, a type of bioactive lipid, play crucial roles within cells, serving as integral components of membranes and exhibiting strong signaling properties that have potential therapeutic implications in anti-cancer treatments. However, due to the diverse group of lipids and intricate mechanisms, sphingolipids still face challenges in enhancing the efficacy of different therapy approaches. In recent decades, mass spectrometry has made significant advancements in uncovering sphingolipid biomarkers and elucidating their impact on cancer development, progression, and resistance. Primary sphingolipids, such as ceramide and sphingosine-1-phosphate, exhibit contrasting roles in regulating cancer cell death and survival. The evasion of cell death is a characteristic hallmark of cancer cells, leading to treatment failure and a poor prognosis. The escape initiates with long-established apoptosis and extends to other programmed cell death (PCD) forms when patients experience chemotherapy, radiotherapy, and/or immunotherapy. Gradually, supportive evidence has uncovered the fundamental molecular mechanisms underlying various forms of PCD leading to the development of innovative molecular, genetic, and pharmacological tools that specifically target sphingolipid signaling nodes. In this study, we provide a comprehensive overview of the sphingolipid biomarkers revealed through mass spectrometry in recent decades, as well as an in-depth analysis of the six main forms of PCD (apoptosis, autophagy, pyroptosis, necroptosis, ferroptosis, and cuproptosis) in aspects of tumorigenesis, metastasis, and tumor response to treatments. We review the corresponding small-molecule compounds associated with these processes and their potential implications in cancer therapy.
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Affiliation(s)
- Ming Shi
- State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Collaborative Innovation Center of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200438, China
- Dongguan Key Laboratory of Medical Bioactive Molecular Developmental and Translational Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan 523808, China
| | - Chao Tang
- National Clinical Research Center for Child Health, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Jia-Xing Wu
- SINO-SWISS Institute of Advanced Technology, School of Microelectronics, Shanghai University, Shanghai 200444, China
| | - Bao-Wei Ji
- Department of Nephrology, Children's Hospital of Fudan University, Shanghai 200032, China
| | - Bao-Ming Gong
- State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Collaborative Innovation Center of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Xiao-Hui Wu
- State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Collaborative Innovation Center of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Xue Wang
- State Key Laboratory of Genetic Engineering and National Center for International Research of Development and Disease, Collaborative Innovation Center of Genetics and Development, Institute of Developmental Biology and Molecular Medicine, School of Life Sciences, Fudan University, Shanghai 200438, China
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56
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Zhang X, Lan Q, Zhang M, Wang F, Shi K, Li X, Kuang E. Inhibition of AIM2 inflammasome activation by SOX/ORF37 promotes lytic replication of Kaposi's sarcoma-associated herpesvirus. Proc Natl Acad Sci U S A 2023; 120:e2300204120. [PMID: 37364111 PMCID: PMC10318979 DOI: 10.1073/pnas.2300204120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/16/2023] [Indexed: 06/28/2023] Open
Abstract
Inflammasomes are one kind of important innate immune defense against viral and bacterial infections. Several inflammasome-forming sensors detect molecular patterns of invading pathogens and then trigger inflammasome activation and/or pyroptosis in infected cells, and viruses employ unique strategies to hijack or subvert inflammasome activation. Infection with herpesviruses induces the activation of diverse inflammasomes, including AIM2 and IFI16 inflammasomes; however, how Kaposi's sarcoma-associated herpesvirus (KSHV) counteracts inflammasome activation largely remains unclear. Here, we reveal that the KSHV ORF37-encoded SOX protein suppresses AIM2 inflammasome activation independent of its viral DNA exonuclease activity and host mRNA turnover. SOX interacts with the AIM2 HIN domain through the C-terminal Motif VII region and disrupts AIM2:dsDNA polymerization and ASC recruitment and oligomerization. The Y443A or F444A mutation of SOX abolishes the inhibition of AIM2 inflammasome without disrupting SOX nuclease activity, and a short SOX peptide is capable of inhibiting AIM2 inflammasome activation; consequently, infection with SOX-null, Y443A, or F444A Bac16 recombinant viruses results in robust inflammasome activation, suppressed lytic replication, and increased pyroptosis in human lymphatic endothelial cells in an AIM2-dependent manner. These results reveal that KSHV SOX suppresses AIM2 inflammasome activation to promote KSHV lytic replication and inhibit pyroptosis, representing a unique mechanism for evasion of inflammasome activation during KSHV lytic cycle.
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Affiliation(s)
- Xiaolin Zhang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
| | - Qingping Lan
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
| | - Mingyu Zhang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
| | - Fan Wang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
| | - Keyi Shi
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
| | - Xiaojuan Li
- College of Clinical Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei430061, China
| | - Ersheng Kuang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong510080, China
- Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong510080, China
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57
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Li Y, Zhang C, Samad A, Zheng P, Li Y, Chen F, Jin T. Structural mechanism of dsDNA recognition by the hMNDA HIN domain: New insights into the DNA-binding model of a PYHIN protein. Int J Biol Macromol 2023; 245:125461. [PMID: 37348588 DOI: 10.1016/j.ijbiomac.2023.125461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/07/2023] [Accepted: 06/11/2023] [Indexed: 06/24/2023]
Abstract
The hematopoietic interferon-inducible nuclear (HIN) domain of the PYHIN family of proteins recognizes double-stranded DNA (dsDNA) through different dsDNA-binding modes. These modes apparently confer different roles upon these proteins in the regulation of innate immune responses, gene transcription, and apoptosis. Myeloid cell nuclear differentiation antigen (MNDA), a member of the human PYHIN family, binds DNA and regulates gene transcription in monocytes. However, the mechanism of DNA recognition and DNA-binding modes of human MNDA (hMNDA) remain unclear. Here, we determined the crystal structure of the hMNDA-HIN domain in complex with dsDNA at 2.4 Å resolution, and reveal that hMNDA-HIN binds to dsDNA in a sequence-independent manner. Structure and mutation studies indicated that hMNDA-HIN binds to dsDNA through a unique mode, involving two dsDNA-binding interfaces. Interface I exhibits an AIM2-like dsDNA-binding mode, and interface II has a previously unreported mode of dsDNA-binding. These results provide new insights into the DNA-binding modes of this PYHIN protein.
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Affiliation(s)
- Yuelong Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China
| | - Caiying Zhang
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Abdus Samad
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Peiyi Zheng
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yajuan Li
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Feng Chen
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Tengchuan Jin
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China; Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China; Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei, Anhui, China; Biomedical Sciences and Health Laboratory of Anhui Province, University of Science & Technology of China, Hefei 230027, China; Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei 230001, China.
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58
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Zhang H, Shi H, Zhou S, Wei G, Xie W, Meng M, Chang G, Shen X. Dietary disodium fumarate supplementation alleviates subacute ruminal acidosis (SARA)-induced liver damage by inhibiting pyroptosis via mitophagy-NLRP3 inflammasome pathway in lactating Hu sheep. Front Immunol 2023; 14:1197133. [PMID: 37275885 PMCID: PMC10235698 DOI: 10.3389/fimmu.2023.1197133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/08/2023] [Indexed: 06/07/2023] Open
Abstract
Liver damage is common in ruminants with subacute ruminal acidosis (SARA). Disodium fumarate (DF) could regulate rumen microbial community and neutralize ruminal organic acids. This study aimed to evaluate the effect of dietary DF supplementation on SARA-induced liver damage and investigate the underlying mechanism. The results showed that feeding a high-concentrate diet induced decreased rumen fluid pH and increased ruminal LPS. The rumen fluid pH in the HC group was less than 5.6 at 4 time points, indicating that SARA was successfully induced. The histopathological analysis showed that in the HC group, hemorrhage and inflammatory cell infiltration were observed in liver tissue. Using ELISA kits and biochemical analyzer, we identified that the contents of interleukin 1beta (IL-1β), interleukin 18 (IL-18), caspase-1, and the activity of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in hepatic vein were elevated in the HC group. However, DF supplementation increased rumen fluid pH value, decreased ruminal LPS, attenuated hemorrhage and inflammatory cell infiltration in the liver tissue, and decreased contents of IL-1β, IL-18, caspase-1, AST, and ALT in the hepatic vein. Real-time PCR and western blot analysis displayed that SARA-induced increased expression of pyroptosis-related proteins (GSDMD-NT) was attenuated in the HCDF group. Meanwhile, SARA induced increased expression of mitophagy and inflammasome-related proteins (MAP1LC3-II, PINK1, Parkin, cleaved-caspase-11, cleaved-caspase-1, NLRP3, and ASC) and elevated expression of inflammasome-related genes (NLRP3, CASP1, and ASC), which was reversed by DF supplementation. Moreover, SARA activated toll-like receptor 4 (TLR4)-nuclear factor kappa B (NF-κB) signaling pathway and inhibited the entry of forkhead box A2 (FOXA2) into the nucleus, which was reversed by DF supplementation. Collectively, our data suggest that dietary DF supplementation inhibited hepatocyte pyroptosis by regulating the mitophagy-NLRP3 inflammasome pathway and the NF-κB signaling pathway, thus alleviating SARA-induced liver damage in Hu sheep.
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Xu J, Zhou Z, Zheng Y, Yang S, Huang K, Li H. Roles of inflammasomes in viral myocarditis. Front Cell Infect Microbiol 2023; 13:1149911. [PMID: 37256114 PMCID: PMC10225676 DOI: 10.3389/fcimb.2023.1149911] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/28/2023] [Indexed: 06/01/2023] Open
Abstract
Viral myocarditis (VMC), characterized by viral infection-induced inflammation, is a life-threatening disease associated with dilated cardiomyopathy or heart failure. Innate immunity plays a crucial role in the progression of inflammation, in which inflammasomes provide a platform for the secretion of cytokines and mediate pyroptosis. Inflammasomes are rising stars gaining increasing attention. The nucleotide oligomerization domain-, leucine-rich repeat-, and pyrin domain-containing protein 3 (NLRP3) inflammasome, the caspase recruitment domain-containing protein 8 (CARD8) inflammasome, and the caspase-11 inflammasome are three inflammasomes that were reported to affect the process and prognosis of VMC. These inflammasomes can be activated by a wide range of cellular events. Accumulating evidence has suggested that inflammasomes are involved in different stages of VMC, including the trigger and progression of myocardial injury and remodeling after infection. In this review, we summarized the pathways involving inflammasomes in VMC and discussed the potential therapies targeting inflammasomes and related pathways.
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Affiliation(s)
- Jingyu Xu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zihao Zhou
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yidan Zheng
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sai Yang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kun Huang
- Institution of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huili Li
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chai R, Li Y, Shui L, Ni L, Zhang A. The role of pyroptosis in inflammatory diseases. Front Cell Dev Biol 2023; 11:1173235. [PMID: 37250902 PMCID: PMC10213465 DOI: 10.3389/fcell.2023.1173235] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/18/2023] [Indexed: 05/31/2023] Open
Abstract
Programmed cell death has crucial roles in the physiological maturation of an organism, the maintenance of metabolism, and disease progression. Pyroptosis, a form of programmed cell death which has recently received much attention, is closely related to inflammation and occurs via canonical, non-canonical, caspase-3-dependent, and unclassified pathways. The pore-forming gasdermin proteins mediate pyroptosis by promoting cell lysis, contributing to the outflow of large amounts of inflammatory cytokines and cellular contents. Although the inflammatory response is critical for the body's defense against pathogens, uncontrolled inflammation can cause tissue damage and is a vital factor in the occurrence and progression of various diseases. In this review, we briefly summarize the major signaling pathways of pyroptosis and discuss current research on the pathological function of pyroptosis in autoinflammatory diseases and sterile inflammatory diseases.
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Affiliation(s)
| | | | | | - Longxing Ni
- *Correspondence: Longxing Ni, ; Ansheng Zhang,
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Wang M, Yu F, Chang W, Zhang Y, Zhang L, Li P. Inflammasomes: a rising star on the horizon of COVID-19 pathophysiology. Front Immunol 2023; 14:1185233. [PMID: 37251383 PMCID: PMC10213254 DOI: 10.3389/fimmu.2023.1185233] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/02/2023] [Indexed: 05/31/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a contagious respiratory virus that is the cause of the coronavirus disease 2019 (COVID-19) pandemic which has posed a serious threat to public health. COVID-19 is characterized by a wide spectrum of clinical manifestations, ranging from asymptomatic infection to mild cold-like symptoms, severe pneumonia or even death. Inflammasomes are supramolecular signaling platforms that assemble in response to danger or microbial signals. Upon activation, inflammasomes mediate innate immune defense by favoring the release of proinflammatory cytokines and triggering pyroptotic cell death. Nevertheless, abnormalities in inflammasome functioning can result in a variety of human diseases such as autoimmune disorders and cancer. A growing body of evidence has showed that SARS-CoV-2 infection can induce inflammasome assembly. Dysregulated inflammasome activation and consequent cytokine burst have been associated with COVID-19 severity, alluding to the implication of inflammasomes in COVID-19 pathophysiology. Accordingly, an improved understanding of inflammasome-mediated inflammatory cascades in COVID-19 is essential to uncover the immunological mechanisms of COVID-19 pathology and identify effective therapeutic approaches for this devastating disease. In this review, we summarize the most recent findings on the interplay between SARS-CoV-2 and inflammasomes and the contribution of activated inflammasomes to COVID-19 progression. We dissect the mechanisms involving the inflammasome machinery in COVID-19 immunopathogenesis. In addition, we provide an overview of inflammasome-targeted therapies or antagonists that have potential clinical utility in COVID-19 treatment.
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Affiliation(s)
- Man Wang
- *Correspondence: Man Wang, ; Peifeng Li,
| | | | | | | | | | - Peifeng Li
- *Correspondence: Man Wang, ; Peifeng Li,
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Das A, Pathak MP, Pathak K, Saikia R, Gogoi U. Herbal medicine for the treatment of obesity-associated asthma: a comprehensive review. Front Pharmacol 2023; 14:1186060. [PMID: 37251328 PMCID: PMC10213975 DOI: 10.3389/fphar.2023.1186060] [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: 03/14/2023] [Accepted: 04/25/2023] [Indexed: 05/31/2023] Open
Abstract
Obesity is fast growing as a global pandemic and is associated with numerous comorbidities like cardiovascular disease, hypertension, diabetes, gastroesophageal reflux disease, sleep disorders, nephropathy, neuropathy, as well as asthma. Studies stated that obese asthmatic subjects suffer from an increased risk of asthma, and encounter severe symptoms due to a number of pathophysiology. It is very vital to understand the copious relationship between obesity and asthma, however, a clear and pinpoint pathogenesis underlying the association between obesity and asthma is scarce. There is a plethora of obesity-asthma etiologies reported viz., increased circulating pro-inflammatory adipokines like leptin, resistin, and decreased anti-inflammatory adipokines like adiponectin, depletion of ROS controller Nrf2/HO-1 axis, nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 (NLRP3) associated macrophage polarization, hypertrophy of WAT, activation of Notch signaling pathway, and dysregulated melanocortin pathway reported, however, there is a very limited number of reports that interrelates these pathophysiologies. Due to the underlying complex pathophysiologies exaggerated by obese conditions, obese asthmatics respond poorly to anti-asthmatic drugs. The poor response towards anti-asthmatic drugs may be due to the anti-asthmatics approach only that ignores the anti-obesity target. So, aiming only at the conventional anti-asthmatic targets in obese-asthmatics may prove to be futile until and unless treatment is directed towards ameliorating obesity pathogenesis for a holistic approach towards amelioration of obesity-associated asthma. Herbal medicines for obesity as well as obesity-associated comorbidities are fast becoming safer and more effective alternatives to conventional drugs due to their multitargeted approach with fewer adverse effects. Although, herbal medicines are widely used for obesity-associated comorbidities, however, a limited number of herbal medicines have been scientifically validated and reported against obesity-associated asthma. Notable among them are quercetin, curcumin, geraniol, resveratrol, β-Caryophyllene, celastrol, tomatidine to name a few. In view of this, there is a dire need for a comprehensive review that may summarize the role of bioactive phytoconstituents from different sources like plants, marine as well as essential oils in terms of their therapeutic mechanisms. So, this review aims to critically discuss the therapeutic role of herbal medicine in the form of bioactive phytoconstituents against obesity-associated asthma available in the scientific literature to date.
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Affiliation(s)
- Aparoop Das
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, India
| | - Manash Pratim Pathak
- Faculty of Pharmaceutical Science, Assam Down Town University, Guwahati, Assam, India
| | - Kalyani Pathak
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, India
| | - Riya Saikia
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, India
| | - Urvashee Gogoi
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, India
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Wang F, Zhang M, Yuan M, Xia Z, Yang F, Zhang S, Lin T, Luo L, Tang J, Zhang Y. A novel sorbicillinoid compound as a potent anti-inflammation agent through inducing NLRP3 protein degradation. Br J Pharmacol 2023. [PMID: 36788033 PMCID: PMC10330222 DOI: 10.1111/bph.16058] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 12/14/2022] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND AND PURPOSE Chronic inflammation is pathogenic and contributes to human diseases, causing a significant threat to public health. The NLR family pyrin domain-containing protein 3 (NLRP3) is the best-characterized factor regulating inflammation. Therefore, targeting NLRP3 has the potential to treat inflammatory diseases and improve human health. EXPERIMENTAL APPROACH Lipopolysaccharide was used to induce inflammation in cell cultures. Lipopolysaccharide/d-galactosamine and dextran sulfate sodium salt were used to induce acute liver inflammation and ulcerative colitis respectively in C57BL/6J mice. Western blotting, immunofluorescence, immunoprecipitation, quantitative PCR and enzyme-linked immunosorbent assay (ELISA) were used to evaluate the activation of the inflammatory response in cell cultures and in mice. KEY RESULTS JNUTS013, a novel sorbicillinoid compound recently synthesized by us, significantly inhibited inflammation both in cell cultures and in mouse models. Mechanistically, JNUTS013 induced proteasome-dependent degradation of NLRP3. Hence, it suppressed the formation of the NLRP3 inflammasome and the production of downstream inflammatory cytokines and chemokines. The inhibitory effect of JNUTS013 on NLRP3 protein expression was confirmed in mice. Importantly, JNUTS013 failed to ameliorate bowel inflammation in Nlrp3-/- knockout mice, supporting NLRP3 as the biological target by which JNUTS013 inhibits inflammation. Further studies revealed critical chemical moieties of JNUTS013 required for inducing NLRP3 degradation. CONCLUSION AND IMPLICATIONS This study identifies a novel compound JNUTS013 that inhibits inflammation through inducing NLRP3 protein degradation in vitro and in vivo, which not only supports the development of JNUTS013 as an anti-inflammation agent but also creates a new way for the treatment of inflammation by chemically inducing NLRP3 degradation.
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Affiliation(s)
- Fangfang Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China.,Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Meng Zhang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Meng Yuan
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Zixuan Xia
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Fengge Yang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Sihao Zhang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Tengyu Lin
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China
| | - Lianxiang Luo
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, China
| | - Jinshan Tang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drug Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou, China
| | - Youwei Zhang
- Department of Pharmacology, Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
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Mauro AG, Mezzaroma E, Toldo S, Melendez GC, Franco RL, Lesnefsky EJ, Abbate A, Hundley WG, Salloum FN. NLRP3-mediated inflammation in cardio-oncology: sterile yet harmful. Transl Res 2023; 252:9-20. [PMID: 35948198 PMCID: PMC9839540 DOI: 10.1016/j.trsl.2022.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 01/17/2023]
Abstract
Despite significant advances and the continuous development of novel, effective therapies to treat a variety of malignancies, cancer therapy-induced cardiotoxicity has been identified as a prominent cause of morbidity and mortality, closely competing with secondary malignancies. This unfortunate limitation has prompted the inception of the field of cardio-oncology with its purpose to provide the necessary knowledge and key information on mechanisms that support the use of the most efficacious cancer therapy with minimal or no interruption while paying close attention to preventing cardiovascular related morbidity and mortality. Several mechanisms that contribute to cancer therapy-induced cardiotoxicity have been proposed and studied. These mainly involve mitochondrial dysfunction and reactive oxygen species-induced oxidative stress, lysosomal damage, impaired autophagy, cell senescence, DNA damage, and sterile inflammation with the formation and activation of the NLRP3 inflammasome. In this review, we focus on describing the principal mechanisms for different classes of cancer therapies that lead to cardiotoxicity involving the NLRP3 inflammasome. We also summarize current evidence of cardio-protection with inflammasome inhibitors in the context of heart disease in general, and further highlight the potential application of this evidence for clinical translation in at risk patients for the purpose of preventing cancer therapy associated cardiovascular morbidity and mortality.
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Affiliation(s)
- Adolfo G Mauro
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA
| | - Eleonora Mezzaroma
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA
| | - Stefano Toldo
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA
| | - Giselle C Melendez
- Department of Internal Medicine, Sections on Cardiovascular Medicine, Department of Pathology, Section on Comparative Medicine, Wake Forest, School of Medicine, Winston-Salem, NC
| | - R Lee Franco
- College of Humanities and Sciences, Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA
| | - Edward J Lesnefsky
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA; Department of the Medical Service of the McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Antonio Abbate
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA
| | - W Gregory Hundley
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA
| | - Fadi N Salloum
- Pauley Heart Center, Department of Internal Medicine, Cardiology, Virginia Commonwealth University, Richmond, VA.
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Xiang Y, Li X, Cai M, Cai D. USP9X promotes lipopolysaccharide-stimulated acute lung injury by deubiquitination of NLRP3. Cell Biol Int 2023; 47:394-405. [PMID: 36525374 DOI: 10.1002/cbin.11932] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 08/31/2022] [Accepted: 09/25/2022] [Indexed: 12/23/2022]
Abstract
Alveolar epithelial cells (AECs) function as a vital defense barrier avoiding the invasion of exogenous agents and preserving the functional and structural integrity of lung tissues, while damage/breakdown of this airway epithelial barrier is frequently associated with the pathogenesis of acute lung injury (ALI). NOD-like receptor family, pyrindomain-containing 3 (NLRP3) inflammasome activation-associated pyroptosis is involved in the development of ALI. Yet, how the activity of NLRP3 inflammasome is regulated in the context of ALI remains unknown. Herein we hypothesized that USP9X, an important deubiquitinase, participates in modulating the activation of NLRP3 inflammasome, thereby affecting the phenotypes in a lipopolysaccharide (LPS)-stimulated AEC model. Human pulmonary AECs were subjected to LPS/adenosine triphosphate (ATP) treatment to induce NLRP3 inflammasome activation and cell pyroptosis. Knockdown and overexpression of USP9X were applied to validate the function of USP9X. Inhibitors of proteinase and protein synthesis, as well as approach of co-immunoprecipitation coupled with Western blot, were utilized to explore the molecular mechanism. LPS/ATP challenge resulted in pronouncedly increased pyroptosis of AECs, activation of NLRP3 inflammasome and release of interleukin (IL)-1β and IL-18 cytokines, while downregulation of USP9X could reverse these alterations. USP9X was found to have marked impact on NLRP3 protein instead of mRNA level. Furthermore, increased ubiquitination of NLRP3 was observed upon downregulating USP9X. Additionally, the inhibitory effect of USP9X downregulation was reversed by NLRP3 overexpression, while the promoting impact of USP9X overexpression was dampened by NLRP3 inhibitor in terms of cell pyroptosis and cytokine secretion. USP9X modulated the activity of NLRP3 inflammasome and pyroptosis of AECs via its deubiquitination function.
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Affiliation(s)
- Yijin Xiang
- Development Project of Shanghai Peak Disciplines-Integrative Medicine, Department of Integrative Medicine, Zhongshan Hospital, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xiangting Li
- Development Project of Shanghai Peak Disciplines-Integrative Medicine, Department of Integrative Medicine, Zhongshan Hospital, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Min Cai
- Development Project of Shanghai Peak Disciplines-Integrative Medicine, Department of Integrative Medicine, Zhongshan Hospital, Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Dingfang Cai
- Development Project of Shanghai Peak Disciplines-Integrative Medicine, Department of Integrative Medicine, Zhongshan Hospital, Institutes of Integrative Medicine, Fudan University, Shanghai, China
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Shi Y, Liu Q, Chen W, Wang R, Wang L, Liu ZQ, Duan XC, Zhang Y, Shen A, Peng D, Han L, Ji Z. Protection of Taohong Siwu Decoction on PC12 cells injured by oxygen glucose deprivation/reperfusion via mitophagy-NLRP3 inflammasome pathway in vitro. JOURNAL OF ETHNOPHARMACOLOGY 2023; 301:115784. [PMID: 36206870 DOI: 10.1016/j.jep.2022.115784] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/17/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Taohong Siwu Decoction (THSWD) is a traditional Chinese medicine formula used to invigorate blood circulation and resolve blood stasis. It consists of Paeonia lactiflora Pall., Conioselinum anthriscoides (H.Boissieu) Pimenov & Kljuykov, Rehmannia glutinosa (Gaertn.) DC., Prunus persica (L.) Batsch, Angelica sinensis (Oliv.) Diels, and Carthamus creticus L. in the ratio of 3:2:4:3:3:2. THSWD is a common prescription for the treatment of ischemic stroke. AIM OF THE STUDY To study the protective effect and mechanism of Taohong Siwu Decoction (THSWD) on PC12 cells damaged by oxygen glucose deprivation/reperfusion (OGD/R). MATERIALS AND METHODS OGD/R model of PC12 cells was used to simulate ischemia-reperfusion (I/R) injury of nerve cells in vitro. The experiment was grouped as follows: control, OGD/R and OGD/R + THSWD (5%, 10% and 15%) group. Oxygen and glucose was restored for 24 h after 4-6 h of deprivation. The severity of damage to PC12 cells was evaluated by CCK8, flow cytometry and lactate dehydrogenase (LDH). Mitochondrial morphology and function were examined by transmission electron microscopy (TEM), ATP and mitochondrial membrane potential (MMP) assay kits. Cellular autophagy and NLRP3 inflammasome-associated proteins were detected by Western blot and immunofluorescence staining. RESULTS THSWD treatment improved the survival rate of PC12 cells injured by OGD/R, reduced cell damage and apoptosis. Moreover, ATP, MMP and the expression of autophagy marker proteins (LC3-II/LC3-I, Beclin1, Atg5) and mitophagy marker proteins (Parkin and PINK-1) was significantly elevated. The reactive oxygen species (ROS), NLRP3 inflammasome and pro-inflammatory cytokines induced by OGD/R were distinctly reduced. In contrast, these above beneficial effects of THSWD on mitochondrial autophagy and NLRP3 inflammasome were reversed by mitochondrial division inhibitory factor 1 (Mdivi-1). CONCLUSION THSWD protects PC12 cells against OGD/R injury by heightening mitophagy and suppressing the activation of NLRP3 inflammasome.
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Affiliation(s)
- Yun Shi
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Qing Liu
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Weidong Chen
- College of Pharmacy, Anhui University of Chinese Medicine, China; MOE-Anhui Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, China; Anhui Province Key Laboratory of Chinese Medicinal Formula, China; Institute of Traditional Chinese Medicine Resources Protection and Development, China; Anhui Province Key Laboratory of Traditional Chinese Medicine Decoction Pieces of New Manufacturing Technology, China
| | - Ruirui Wang
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Lei Wang
- College of Pharmacy, Anhui University of Chinese Medicine, China; MOE-Anhui Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, China; Anhui Province Key Laboratory of Chinese Medicinal Formula, China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, China
| | - Zhu-Qing Liu
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Xian-Chun Duan
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Yanchun Zhang
- College of Pharmacy, Anhui University of Chinese Medicine, China
| | - Aizong Shen
- Department of Pharmacy, Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, China
| | - Daiyin Peng
- College of Pharmacy, Anhui University of Chinese Medicine, China; MOE-Anhui Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, China; Anhui Province Key Laboratory of Chinese Medicinal Formula, China; Institute of Traditional Chinese Medicine Resources Protection and Development, China
| | - Lan Han
- College of Pharmacy, Anhui University of Chinese Medicine, China; MOE-Anhui Joint Collaborative Innovation Center for Quality Improvement of Anhui Genuine Chinese Medicinal Materials, China.
| | - Zhaojie Ji
- College of Pharmacy, Anhui University of Chinese Medicine, China.
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Cheng Y, Manabe I, Hayakawa S, Endo Y, Oishi Y. Caspase-11 contributes to site-1 protease cleavage and SREBP1 activation in the inflammatory response of macrophages. Front Immunol 2023; 14:1009973. [PMID: 36776855 PMCID: PMC9912839 DOI: 10.3389/fimmu.2023.1009973] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/10/2023] [Indexed: 01/28/2023] Open
Abstract
Sterol regulatory element-binding proteins (SREBPs) are key transcription factors that control fatty acid and cholesterol metabolism. As the major SREBP isoform in macrophages, SREBP1a is also required for inflammatory and phagocytotic functions. However, it is insufficiently understood how SREBP1a is activated by the innate immune response in macrophages. Here, we show that mouse caspase-11 is a novel inflammatory activator of SREBP1a in macrophages. Upon LPS treatment, caspase-11 was found to promote the processing of site-1 protease (S1P), an enzyme that mediates the cleavage and activation of SREBP1. We also determined that caspase-11 directly associates with S1P and cleaves it at a specific site. Furthermore, deletion of the Casp4 gene, which encodes caspase-11, impaired the activation of S1P and SREBP1 as well as altered the expression of genes regulated by SREBP1 in macrophages. These results demonstrate that the caspase-11/S1P pathway activates SREBP1 in response to LPS, thus regulating subsequent macrophage activation.
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Affiliation(s)
- Yinglan Cheng
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Bunkyo-ku, Japan
| | - Ichiro Manabe
- Department of Systems Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan,*Correspondence: Ichiro Manabe, ; Yumiko Oishi,
| | - Sumio Hayakawa
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Bunkyo-ku, Japan
| | - Yusuke Endo
- Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Kisarazu, Japan
| | - Yumiko Oishi
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Bunkyo-ku, Japan,*Correspondence: Ichiro Manabe, ; Yumiko Oishi,
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Wang L, Cai J, Zhao X, Ma L, Zeng P, Zhou L, Liu Y, Yang S, Cai Z, Zhang S, Zhou L, Yang J, Liu T, Jin S, Cui J. Palmitoylation prevents sustained inflammation by limiting NLRP3 inflammasome activation through chaperone-mediated autophagy. Mol Cell 2023; 83:281-297.e10. [PMID: 36586411 DOI: 10.1016/j.molcel.2022.12.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 10/27/2022] [Accepted: 11/30/2022] [Indexed: 12/31/2022]
Abstract
As a key component of the inflammasome, NLRP3 is a critical intracellular danger sensor emerging as an important clinical target in inflammatory diseases. However, little is known about the mechanisms that determine the kinetics of NLRP3 inflammasome stability and activity to ensure effective and controllable inflammatory responses. Here, we show that S-palmitoylation acts as a brake to turn NLRP3 inflammasome off. zDHHC12 is identified as the S-acyltransferase for NLRP3 palmitoylation, which promotes its degradation through the chaperone-mediated autophagy pathway. Zdhhc12 deficiency in mice enhances inflammatory symptoms and lethality following alum-induced peritonitis and LPS-induced endotoxic shock. Notably, several disease-associated mutations in NLRP3 are associated with defective palmitoylation, resulting in overt NLRP3 inflammasome activation. Thus, our findings identify zDHHC12 as a repressor of NLRP3 inflammasome activation and uncover a previously unknown regulatory mechanism by which the inflammasome pathway is tightly controlled by the dynamic palmitoylation of NLRP3.
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Affiliation(s)
- Liqiu Wang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jing Cai
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xin Zhao
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ling Ma
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ping Zeng
- The Department of Rheumatology, Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - Lingli Zhou
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yukun Liu
- Key Laboratory of Stem Cells and Tissue Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Ministry of Education, Guangzhou, Guangdong, China
| | - Shuai Yang
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhe Cai
- The Department of Rheumatology, Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - Song Zhang
- The Department of Rheumatology, Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - Liang Zhou
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jiahui Yang
- Huizhou Municipal Central Hospital, Huizhou, Guangdong, China
| | - Tao Liu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shouheng Jin
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jun Cui
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences of Sun Yat-sen University, Guangzhou, Guangdong, China.
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Wood SJ, Goldufsky JW, Seu MY, Dorafshar AH, Shafikhani SH. Pseudomonas aeruginosa Cytotoxins: Mechanisms of Cytotoxicity and Impact on Inflammatory Responses. Cells 2023; 12:cells12010195. [PMID: 36611990 PMCID: PMC9818787 DOI: 10.3390/cells12010195] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 01/05/2023] Open
Abstract
Pseudomonas aeruginosa is one of the most virulent opportunistic Gram-negative bacterial pathogens in humans. It causes many acute and chronic infections with morbidity and mortality rates as high as 40%. P. aeruginosa owes its pathogenic versatility to a large arsenal of cell-associated and secreted virulence factors which enable this pathogen to colonize various niches within hosts and protect it from host innate immune defenses. Induction of cytotoxicity in target host cells is a major virulence strategy for P. aeruginosa during the course of infection. P. aeruginosa has invested heavily in this strategy, as manifested by a plethora of cytotoxins that can induce various forms of cell death in target host cells. In this review, we provide an in-depth review of P. aeruginosa cytotoxins based on their mechanisms of cytotoxicity and the possible consequences of their cytotoxicity on host immune responses.
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Affiliation(s)
- Stephen J. Wood
- Department of Medicine, Division of Hematology, Oncology and Cell Therapy, Rush University Medical Center, Chicago, IL 60612, USA
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Josef W. Goldufsky
- Department of Medicine, Division of Hematology, Oncology and Cell Therapy, Rush University Medical Center, Chicago, IL 60612, USA
| | - Michelle Y. Seu
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Amir H. Dorafshar
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Sasha H. Shafikhani
- Department of Medicine, Division of Hematology, Oncology and Cell Therapy, Rush University Medical Center, Chicago, IL 60612, USA
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA
- Cancer Center, Rush University Medical Center, Chicago, IL 60612, USA
- Correspondence:
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Mazzetti S, Calogero AM, Pezzoli G, Cappelletti G. Cross-talk between α-synuclein and the microtubule cytoskeleton in neurodegeneration. Exp Neurol 2023; 359:114251. [PMID: 36243059 DOI: 10.1016/j.expneurol.2022.114251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 12/30/2022]
Abstract
Looking at the puzzle that depicts the molecular determinants in neurodegeneration, many pieces are lacking and multiple interconnections among key proteins and intracellular pathways still remain unclear. Here we focus on the concerted action of α-synuclein and the microtubule cytoskeleton, whose interplay, indeed, is emerging but remains largely unexplored in both its physiology and pathology. α-Synuclein is a key protein involved in neurodegeneration, underlying those diseases termed synucleinopathies. Its propensity to interact with other proteins and structures renders the identification of neuronal death trigger extremely difficult. Conversely, the unbalance of microtubule cytoskeleton in terms of structure, dynamics and function is emerging as a point of convergence in neurodegeneration. Interestingly, α-synuclein and microtubules have been shown to interact and mediate cross-talks with other intracellular structures. This is supported by an increasing amount of evidence ranging from their direct interaction to the engagement of in-common partners and culminating with their respective impact on microtubule-dependent neuronal functions. Last, but not least, it is becoming even more clear that α-synuclein and tubulin work synergically towards pathological aggregation, ultimately resulting in neurodegeneration. In this respect, we supply a novel perspective towards the understanding of α-synuclein biology and, most importantly, of the link between α-synuclein with microtubule cytoskeleton and its impact for neurodegeneration and future development of novel therapeutic strategies.
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Affiliation(s)
- Samanta Mazzetti
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy; Fondazione Grigioni per il Morbo di Parkinson, Milan, Italy
| | | | - Gianni Pezzoli
- Fondazione Grigioni per il Morbo di Parkinson, Milan, Italy
| | - Graziella Cappelletti
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy; Center of Excellence on Neurodegenerative Diseases, Università degli Studi di Milano, Milano, Italy.
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71
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Tan Y, Yu Y, Liu W, Ma X, Shi D. Bibliometric evaluation of publications on inflammasomes in atherosclerosis from 2002 to 2022. Front Cardiovasc Med 2023; 10:1067226. [PMID: 37123477 PMCID: PMC10130533 DOI: 10.3389/fcvm.2023.1067226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 03/30/2023] [Indexed: 05/02/2023] Open
Abstract
Background Inflammasomes have emerged as an important and promising area of investigation in atherosclerosis. This field, however, lacks bibliometric studies. To help understand how basic and clinical research on inflammasomes in atherosclerosis will develop in the future, we used bibliometric analysis to visualize hotspots and trends. Methods Studies related to inflammasomes in atherosclerosis were collected from the Web of Science Core Collection database. Each study was analyzed bibliometrically and visually. CiteSpace and VOSviewer software were used to generate knowledge maps. Results A total of 894 articles were identified. Sixty-two countries and 338 institutions led by China and the United States contributed to these publications. The leading research institutions were Harvard Medical School and Columbia University. Circulation was the most frequently cited journal in this field. Among the 475 authors determined, Eicke Latz authored the most studies, and Peter Duewell has been cocited the most. NLRP3 inflammasome, NF-kappa B, macrophage and oxidative stress are the most commonly used keywords. Conclusion There has been a blooming of research on inflammasomes in atherosclerosis during the last two decades. Future studies will likely explore the molecular mechanism of inflammasomes in cell death. More compellingly, researchers may further delve into the potential clinical value of affecting pathological changes in atherosclerosis by modulating the initial transcription immune response and intracellular multiprotein assembly process of the NLRP3 inflammasome. Our research will be helpful to scholars focusing on inflammation-a much-needed breakthrough in the pathophysiological alterations of atherosclerosis-with a novel perspective.
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Affiliation(s)
- Yu Tan
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanqiao Yu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Wei Liu
- Department of Cardiology, Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing, China
- Correspondence: Wei Liu Xiaojuan Ma Dazhuo Shi
| | - Xiaojuan Ma
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Correspondence: Wei Liu Xiaojuan Ma Dazhuo Shi
| | - Dazhuo Shi
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Correspondence: Wei Liu Xiaojuan Ma Dazhuo Shi
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Rodolfi S, Nasone I, Folci M, Selmi C, Brunetta E. Autoinflammatory manifestations in adult patients. Clin Exp Immunol 2022; 210:295-308. [PMID: 36334040 PMCID: PMC9985169 DOI: 10.1093/cei/uxac098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 10/14/2022] [Accepted: 11/04/2022] [Indexed: 11/06/2022] Open
Abstract
Autoinflammatory diseases represent a family of immune-mediated conditions characterized by the unchecked activation of innate immunity. These conditions share common clinical features such as recurrent fever, inflammatory arthritis, and elevation of acute phase reactants, in the absence of an identified infectious etiology, generally without detectable serum autoantibodies, with variable response to glucocorticoids and in some cases colchicine, which represented the mainstay of treatment until cytokine blockade therapies became available. The first autoinflammatory diseases to be described were monogenic disorders caused by missense mutations in inflammasome components and were recognized predominantly during childhood or early adulthood. However, the progress of genetic analyses and a more detailed immunological phenotyping capacity led to the discovery a wide spectrum of diseases, often becoming manifest or being diagnosed in the adult population. The beneficial role of targeting hyperinflammation via interleukin 1 in complex non-immune-mediated diseases is a field of growing clinical interest. We provide an overview of the autoinflammatory diseases of interest to physicians treating adult patients and to analyze the contribution of hyperinflammation in non-immune-mediated diseases; the result is intended to provide a roadmap to orient scientists and clinicians in this broad area.
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Affiliation(s)
- Stefano Rodolfi
- Rheumatology and Clinical Immunology IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Irene Nasone
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- Emergency Department, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Marco Folci
- Nephrology and Internal Medicine, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Carlo Selmi
- Correspondence: Carlo Selmi, Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center IRCCS and Humanitas University, Via Manzoni 56, Rozzano, 20089, Milan, Italy.
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Zhang L, Liu HH, Li F, Yang F, Qian LL, Wang RX. The Role of NLRP3 Inflammasome Signaling on Arrhythmias in Diabetes. J Inflamm Res 2022; 15:6883-6889. [PMID: 36600995 PMCID: PMC9807127 DOI: 10.2147/jir.s390310] [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: 09/18/2022] [Accepted: 12/16/2022] [Indexed: 12/29/2022] Open
Abstract
Diabetes is a significant risk factor for arrhythmias. However, the pathophysiology of diabetes-related arrhythmias still needs to be elucidated, presumably associated with structural and electrical remodeling. There is growing evidence that inflammation and arrhythmias are intimately associated, which has spurred significant interest in exploring the regulatory links in diabetes. Recent research findings have revealed a vital role for the NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome signaling, and facilitated the occurrence of arrhythmias in diabetes, including NLRP3 inflammasome activation by multiple stressors and its downstream cytokines, interleukin-1β (IL-1β) and interleukin-18 (IL-18). This narrative review aims to summarize the complex interaction between NLRP3 inflammasomes signaling and diabetes-related arrhythmias. Articles regarding the role of NLRP3 inflammasome in diabetes-related arrhythmias and relevant mechanisms were selected. Relevant articles were selected from PubMed. The search terms were "NLRP3 inflammasome" and "diabetes" and "arrhythmia". Important references from selected articles were also retrieved. The role of NLRP3 inflammasome signaling in diabetes-induced arrhythmias may provide a new option for the prevention and treatment diabetes-related arrhythmias.
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Affiliation(s)
- Lei Zhang
- Department of Cardiology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, People’s Republic of China
| | - Huan-Huan Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi, People’s Republic of China
| | - Feng Li
- Department of Cardiology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, People’s Republic of China
| | - Fan Yang
- Department of Cardiology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, People’s Republic of China
| | - Ling-Ling Qian
- Department of Cardiology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, People’s Republic of China
| | - Ru-Xing Wang
- Department of Cardiology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, People’s Republic of China,Correspondence: Ru-Xing Wang, Tel +86-510-85351593, Fax +86-510-85350555, Email
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Zhou Z, Song X, Kang R, Tang D. The Emerging Role of Deubiquitinases in Cell Death. Biomolecules 2022; 12:1825. [PMID: 36551253 PMCID: PMC9775562 DOI: 10.3390/biom12121825] [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: 11/16/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Regulated cell death (RCD) is a signal-controlled process that not only eliminates infected, damaged, or aged cells but is also implicated in a variety of pathological conditions. The process of RCD is regulated by intracellular proteins that undergo varying levels of post-translational modifications, including mono- or polyubiquitination. Functionally, ubiquitination can affect protein abundance, localization, and activity. Like other post-translational modifications, ubiquitination is a dynamic and reversible process mediated by deubiquitinases, a large class of proteases that cleave ubiquitin from proteins and other substrates. The balance between ubiquitination and deubiquitination machinery determines cell fate under stressful conditions. Here, we review the latest advances in our understanding of the role of deubiquitinases in regulating the main types of RCD, including apoptosis, necroptosis, pyroptosis, and ferroptosis. This knowledge may contribute to identifying new protein degradation-related prognostic markers and therapeutic targets for human disease.
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Affiliation(s)
| | | | | | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX 75390, USA
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Herrera-Martínez AD, Herrero-Aguayo V, Pérez-Gómez JM, Gahete MD, Luque RM. Inflammasomes: Cause or consequence of obesity-associated comorbidities in humans. Obesity (Silver Spring) 2022; 30:2351-2362. [PMID: 36415999 DOI: 10.1002/oby.23581] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/24/2022]
Abstract
Inflammasomes are multiprotein intracellular complexes composed of innate immune system receptors and sensors; they activate the inflammatory cascade in response to infectious microbes and/or molecules derived from host proteins. Because of cytokine secretion, inflammasomes can induce amplified systemic responses, its dysregulation can exacerbate symptoms in infectious diseases, and it has been related to the development of autoimmune diseases, inflammatory disorders, and even cancer. Obesity is associated with a chronic low-grade inflammation, in which circulating proinflammatory cytokines are elevated. Some publications describe changes in inflammation markers as a consequence of obesity, but others suggest that chronic inflammation might cause obesity (e.g., C-reactive protein): these assumptions reflect the difficulty of identifying the appropriate role of inflammation as cause or consequence of obesity and its related complications. Obesity is recognized as a clinical risk factor for developing cardiovascular diseases including atherosclerosis, metabolic syndrome, insulin resistance, and diabetes mellitus. Changes in the expression of inflammasomes are described in some of these obesity-related complications, and moreover, its modulation might exert a beneficial effect in some cases. Despite some contradictory results, most publications suggest a promising clinical effect based on in vitro and in vivo experiments. In this review, we summarized recent publications about inflammasome dysregulation in humans and its relationship with obesity-related comorbidities.
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Affiliation(s)
- Aura D Herrera-Martínez
- Endocrinology and Nutrition Service, Reina Sofia University Hospital, Córdoba, Spain
- Maimonides Institute for Biomedical Research of Córdoba, Córdoba, Spain
| | - Vicente Herrero-Aguayo
- Maimonides Institute for Biomedical Research of Córdoba, Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Jesús M Pérez-Gómez
- Maimonides Institute for Biomedical Research of Córdoba, Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Manuel D Gahete
- Maimonides Institute for Biomedical Research of Córdoba, Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
| | - Raúl M Luque
- Maimonides Institute for Biomedical Research of Córdoba, Córdoba, Spain
- Department of Cell Biology, Physiology, and Immunology, University of Córdoba, Córdoba, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Córdoba, Spain
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Zheng Q, Lin R, Chen Y, Lv Q, Zhang J, Zhai J, Xu W, Wang W. SARS-CoV-2 induces "cytokine storm" hyperinflammatory responses in RA patients through pyroptosis. Front Immunol 2022; 13:1058884. [PMID: 36532040 PMCID: PMC9751040 DOI: 10.3389/fimmu.2022.1058884] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/15/2022] [Indexed: 12/04/2022] Open
Abstract
Background The coronavirus disease (COVID-19) is a pandemic disease that threatens worldwide public health, and rheumatoid arthritis (RA) is the most common autoimmune disease. COVID-19 and RA are each strong risk factors for the other, but their molecular mechanisms are unclear. This study aims to investigate the biomarkers between COVID-19 and RA from the mechanism of pyroptosis and find effective disease-targeting drugs. Methods We obtained the common gene shared by COVID-19, RA (GSE55235), and pyroptosis using bioinformatics analysis and then did the principal component analysis(PCA). The Co-genes were evaluated by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and ClueGO for functional enrichment, the protein-protein interaction (PPI) network was built by STRING, and the k-means machine learning algorithm was employed for cluster analysis. Modular analysis utilizing Cytoscape to identify hub genes, functional enrichment analysis with Metascape and GeneMANIA, and NetworkAnalyst for gene-drug prediction. Network pharmacology analysis was performed to identify target drug-related genes intersecting with COVID-19, RA, and pyroptosis to acquire Co-hub genes and construct transcription factor (TF)-hub genes and miRNA-hub genes networks by NetworkAnalyst. The Co-hub genes were validated using GSE55457 and GSE93272 to acquire the Key gene, and their efficacy was assessed using receiver operating curves (ROC); SPEED2 was then used to determine the upstream pathway. Immune cell infiltration was analyzed using CIBERSORT and validated by the HPA database. Molecular docking, molecular dynamics simulation, and molecular mechanics-generalized born surface area (MM-GBSA) were used to explore and validate drug-gene relationships through computer-aided drug design. Results COVID-19, RA, and pyroptosis-related genes were enriched in pyroptosis and pro-inflammatory pathways(the NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome complex, death-inducing signaling complex, regulation of interleukin production), natural immune pathways (Network map of SARS-CoV-2 signaling pathway, activation of NLRP3 inflammasome by SARS-CoV-2) and COVID-19-and RA-related cytokine storm pathways (IL, nuclear factor-kappa B (NF-κB), TNF signaling pathway and regulation of cytokine-mediated signaling). Of these, CASP1 is the most involved pathway and is closely related to minocycline. YY1, hsa-mir-429, and hsa-mir-34a-5p play an important role in the expression of CASP1. Monocytes are high-caspase-1-expressing sentinel cells. Minocycline can generate a highly stable state for biochemical activity by docking closely with the active region of caspase-1. Conclusions Caspase-1 is a common biomarker for COVID-19, RA, and pyroptosis, and it may be an important mediator of the excessive inflammatory response induced by SARS-CoV-2 in RA patients through pyroptosis. Minocycline may counteract cytokine storm inflammation in patients with COVID-19 combined with RA by inhibiting caspase-1 expression.
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Affiliation(s)
- Qingcong Zheng
- Department of Orthopedics, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Rongjie Lin
- Department of Orthopedics, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Yuchao Chen
- Department of Paediatrics, Fujian Provincial Hospital South Branch, Fuzhou, China
| | - Qi Lv
- Department of Orthopedics, 900th Hospital of Joint Logistics Support Force, Fuzhou, China
| | - Jin Zhang
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Jingbo Zhai
- Key Laboratory of Zoonose Prevention and Control at Universities of Inner Mongolia Autonomous Region, Medical College, Inner Mongolia Minzu University, Tongliao, China
| | - Weihong Xu
- Department of Orthopedics, First Affiliated Hospital of Fujian Medical University, Fuzhou, China,*Correspondence: Weihong Xu, ; Wanming Wang,
| | - Wanming Wang
- Department of Orthopedics, 900th Hospital of Joint Logistics Support Force, Fuzhou, China,*Correspondence: Weihong Xu, ; Wanming Wang,
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Hayakawa S, Tamura A, Nikiforov N, Koike H, Kudo F, Cheng Y, Miyazaki T, Kubekina M, Kirichenko TV, Orekhov AN, Yui N, Manabe I, Oishi Y. Activated cholesterol metabolism is integral for innate macrophage responses by amplifying Myd88 signaling. JCI Insight 2022; 7:138539. [PMID: 36509286 DOI: 10.1172/jci.insight.138539] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 10/07/2022] [Indexed: 11/22/2022] Open
Abstract
Recent studies have shown that cellular metabolism is tightly linked to the regulation of immune cells. Here, we show that activation of cholesterol metabolism, involving cholesterol uptake, synthesis, and autophagy/lipophagy, is integral to innate immune responses in macrophages. In particular, cholesterol accumulation within endosomes and lysosomes is a hallmark of the cellular cholesterol dynamics elicited by Toll-like receptor 4 activation and is required for amplification of myeloid differentiation primary response 88 (Myd88) signaling. Mechanistically, Myd88 binds cholesterol via its CLR recognition/interaction amino acid consensus domain, which promotes the protein's self-oligomerization. Moreover, a novel supramolecular compound, polyrotaxane (PRX), inhibited Myd88‑dependent inflammatory macrophage activation by decreasing endolysosomal cholesterol via promotion of cholesterol trafficking and efflux. PRX activated liver X receptor, which led to upregulation of ATP binding cassette transporter A1, thereby promoting cholesterol efflux. PRX also inhibited atherogenesis in Ldlr-/- mice. In humans, cholesterol levels in circulating monocytes correlated positively with the severity of atherosclerosis. These findings demonstrate that dynamic changes in cholesterol metabolism are mechanistically linked to Myd88‑dependent inflammatory programs in macrophages and support the notion that cellular cholesterol metabolism is integral to innate activation of macrophages and is a potential therapeutic and diagnostic target for inflammatory diseases.
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Affiliation(s)
- Sumio Hayakawa
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Atsushi Tamura
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nikita Nikiforov
- National Medical Research Center of Cardiology, Institute of Experimental Cardiology, Moscow, Russia.,Institute of Gene Biology, Centre of Collective Usage, Moscow, Russia.,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Hiroyuki Koike
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Fujimi Kudo
- Department of Systems Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yinglan Cheng
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Takuro Miyazaki
- Department of Biochemistry, Showa University School of Medicine, Tokyo, Japan
| | - Marina Kubekina
- Institute of Gene Biology, Centre of Collective Usage, Moscow, Russia
| | - Tatiana V Kirichenko
- National Medical Research Center of Cardiology, Institute of Experimental Cardiology, Moscow, Russia.,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia.,Institute for Atherosclerosis Research, Moscow, Russia
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Manabe
- Department of Systems Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yumiko Oishi
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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Duan Y, Wang J, Cai J, Kelley N, He Y. The leucine-rich repeat (LRR) domain of NLRP3 is required for NLRP3 inflammasome activation in macrophages. J Biol Chem 2022; 298:102717. [PMID: 36403854 PMCID: PMC9763864 DOI: 10.1016/j.jbc.2022.102717] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 10/25/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022] Open
Abstract
The NLRP3 inflammasome is a critical component of innate immunity that defends the host from microbial infections. However, its aberrant activation contributes to the pathogenesis of several inflammatory diseases. Activation of the NLRP3 inflammasome induces the secretion of proinflammatory cytokines IL-1β and IL-18 and pyroptotic cell death. NLRP3 contains a leucine-rich repeat (LRR) domain at its C terminus. Although posttranslational modifications in this LRR domain have been shown to regulate NLRP3 inflammasome activation, the role of the entire LRR domain in NLRP3 inflammasome activation remains controversial. Here, we generated mouse macrophages that express an endogenous NLRP3 mutant lacking the LRR domain. Deletion of the LRR domain diminished NLRP3 inflammasome activation in macrophages. Furthermore, using NLRP3-deficient macrophages that are reconstituted with NLRP3 mutants lacking the LRR domain, we found that deletion of the LRR domain inhibited NLRP3 inflammasome activation. Mechanistically, deletion of the LRR domain inhibited NLRP3 self-association, oligomerization, and interaction with the essential regulator NEK7. Our results demonstrate a critical role for the LRR domain in NLRP3 inflammasome activation.
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Affiliation(s)
- Yanhui Duan
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, Michigan, USA
| | - Jihong Wang
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, Michigan, USA
| | - Juan Cai
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, Michigan, USA
| | - Nathan Kelley
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, Michigan, USA
| | - Yuan He
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University, Detroit, Michigan, USA.
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Regenerative Medicine-Based Treatment for Vitiligo: An Overview. Biomedicines 2022; 10:biomedicines10112744. [DOI: 10.3390/biomedicines10112744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
Vitiligo is a complex disorder with an important effect on the self-esteem and social life of patients. It is the commonest acquired depigmentation disorder characterized by the development of white macules resulting from the selective loss of epidermal melanocytes. The pathophysiology is complex and involves genetic predisposition, environmental factors, oxidative stress, intrinsic metabolic dysfunctions, and abnormal inflammatory/immune responses. Although several therapeutic options have been proposed to stabilize the disease by stopping the depigmentation process and inducing durable repigmentation, no specific cure has yet been defined, and the long-term persistence of repigmentation is unpredictable. Recently, due to the progressive loss of functional melanocytes associated with failure to spontaneously recover pigmentation, several different cell-based and cell-free regenerative approaches have been suggested to treat vitiligo. This review gives an overview of clinical and preclinical evidence for innovative regenerative approaches for vitiligo patients.
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Heinz R, Schneider UC. TLR4-Pathway-Associated Biomarkers in Subarachnoid Hemorrhage (SAH): Potential Targets for Future Anti-Inflammatory Therapies. Int J Mol Sci 2022; 23:ijms232012618. [PMID: 36293468 PMCID: PMC9603851 DOI: 10.3390/ijms232012618] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/14/2022] [Accepted: 10/18/2022] [Indexed: 11/20/2022] Open
Abstract
Subarachnoid hemorrhage is associated with severe neurological deficits for survivors. Among survivors of the initial bleeding, secondary brain injury leads to additional brain damage. Apart from cerebral vasospasm, secondary brain injury mainly results from cerebral inflammation taking place in the brain parenchyma after bleeding. The brain’s innate immune system is activated, which leads to disturbances in brain homeostasis, cleavage of inflammatory cytokines and, subsequently, neuronal cell death. The toll-like receptor (TLR)4 signaling pathway has been found to play an essential role in the pathophysiology of acute brain injuries such as subarachnoid hemorrhage (SAH). TLR4 is expressed on the cell surface of microglia, which are key players in the cellular immune responses of the brain. The participants in the signaling pathway, such as TLR4-pathway-like ligands, the receptor itself, and inflammatory cytokines, can act as biomarkers, serving as clues regarding the inflammatory status after SAH. Moreover, protein complexes such as the NLRP3 inflammasome or receptors such as TREM1 frame the TLR4 pathway and are indicative of inflammation. In this review, we focus on the activity of the TLR4 pathway and its contributors, which can act as biomarkers of neuroinflammation or even offer potential new treatment targets for secondary neuronal cell death after SAH.
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Affiliation(s)
- Rebecca Heinz
- Experimental Neurosurgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, 10117 Berlin, Germany
| | - Ulf C. Schneider
- Experimental Neurosurgery, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, 10117 Berlin, Germany
- Department of Neurosurgery, Cantonal Hospital of Lucerne, 6000 Lucerne, Switzerland
- Correspondence:
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81
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Yuan J, Zhu Q, Zhang X, Wen Z, Zhang G, Li N, Pei Y, Wang Y, Pei S, Xu J, Jia P, Peng C, Lu W, Qin J, Cao Q, Xiao Y. Ezh2 competes with p53 to license lncRNA Neat1 transcription for inflammasome activation. Cell Death Differ 2022; 29:2009-2023. [PMID: 35568718 PMCID: PMC9525607 DOI: 10.1038/s41418-022-00992-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 11/08/2022] Open
Abstract
Inflammasome contributes to the pathogenesis of various inflammatory diseases, but the epigenetic mechanism controlling its activation remains elusive. Here, we found that the histone methyltransferase Ezh2 mediates the activation of multiple types of inflammasomes in macrophages/microglia independent of its methyltransferase activity and thus promotes inflammasome-related pathologies. Mechanistically, Ezh2 functions through its SANT2 domain to maintain the enrichment of H3K27 acetylation in the promoter region of the long noncoding RNA (lncRNA) Neat1, thereby promoting chromatin accessibility and facilitating p65-mediated transcription of Neat1, which is a critical mediator of inflammasome assembly and activation. In addition, the tumour suppressor protein p53 competes with Ezh2 for the same binding region in the Neat1 promoter and thus antagonises Ezh2-induced Neat1 transcription and inflammasome activation. Therefore, loss of Ezh2 strongly promotes the binding of p53, which recruits the deacetylase SIRT1 for H3K27 deacetylation of the Neat1 promoter and thus suppresses Neat1 transcription and inflammasome activation. Overall, our study demonstrates an epigenetic mechanism involved in modulating inflammasome activation through an Ezh2/p53 competition model and highlights a novel function of Ezh2 in maintaining H3K27 acetylation to support lncRNA Neat1 transcription.
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Affiliation(s)
- Jia Yuan
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qingchen Zhu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xingli Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Zhenzhen Wen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China
| | - Guiheng Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Ni Li
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yifei Pei
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yan Wang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Siyu Pei
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
- Department of Thoracic Surgical Oncology, Shanghai Lung Cancer Center, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Xu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Pan Jia
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Chao Peng
- National Facility for Protein Science in Shanghai, Zhangjiang Lab, Shanghai, 201210, China
| | - Wei Lu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Jun Qin
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qian Cao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, College of Medicine Zhejiang University, Hangzhou, 310016, China.
| | - Yichuan Xiao
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
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82
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Jiang Y, Yang Y, Hu Y, Yang R, Huang J, Liu Y, Wu Y, Li S, Ma C, Humphries F, Wang B, Wang X, Hu Z, Yang S. Gasdermin D restricts anti-tumor immunity during PD-L1 checkpoint blockade. Cell Rep 2022; 41:111553. [DOI: 10.1016/j.celrep.2022.111553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/23/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
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83
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El-Sayed S, Freeman S, Bryce RA. A Selective Review and Virtual Screening Analysis of Natural Product Inhibitors of the NLRP3 Inflammasome. Molecules 2022; 27:molecules27196213. [PMID: 36234744 PMCID: PMC9573361 DOI: 10.3390/molecules27196213] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
The NLRP3 inflammasome is currently an exciting target for drug discovery due to its role in various inflammatory diseases; however, to date, no NLRP3 inhibitors have reached the clinic. Several studies have used natural products as hit compounds to facilitate the design of novel selective NLRP3 inhibitors. Here, we review selected natural products reported in the literature as NLRP3 inhibitors, with a particular focus on those targeting gout. To complement this survey, we also report a virtual screen of the ZINC20 natural product database, predicting favored chemical features that can aid in the design of novel small molecule NLRP3 inhibitors.
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Affiliation(s)
- Sherihan El-Sayed
- Division of Pharmacy and Optometry, School of Health Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK
- Department of Medicinal Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Sally Freeman
- Division of Pharmacy and Optometry, School of Health Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK
- Correspondence: ; Tel.: +44-7950403456
| | - Richard A. Bryce
- Division of Pharmacy and Optometry, School of Health Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Oxford Road, Manchester M13 9PT, UK
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84
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Leszczyńska K, Jakubczyk D, Górska S. The NLRP3 inflammasome as a new target in respiratory disorders treatment. Front Immunol 2022; 13:1006654. [PMID: 36203607 PMCID: PMC9531678 DOI: 10.3389/fimmu.2022.1006654] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/02/2022] [Indexed: 11/13/2022] Open
Abstract
In recent years a continuous increase in new cases of respiratory disorders, such as rhinitis, asthma, and chronic obstructive pulmonary disease (COPD), has been observed. The exact pathomechanism of these diseases is still blurry, resulting in the lack of targeted and effective therapy. The conventional use of treatment strategies, such as antihistamine drugs and/or glucocorticosteroids act mainly symptomatically and have significant side effects. Specific allergen immunotherapy is only useful in the management of specific allergies and selected patients. Therefore, new therapeutic solutions are constantly being sought. The novelty of recent years has been the association between NLRP3 inflammasome activation and the development of airway inflammatory diseases. This seems to be an interesting therapeutic target that may support or even replace traditional therapies in the future. The review presented, discusses the contribution of NLRP3 inflammasome to the development of allergic rhinitis, allergic asthma, and COPD. Moreover, the modulatory properties of probiotics as potential inhibitors of NLRP3 inflammasome are emphasised.
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85
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Expression of NLRP3 and AIM2 inflammasome in Peripheral blood in Chinese patients with acute and chronic brucellosis. Sci Rep 2022; 12:15123. [PMID: 36068262 PMCID: PMC9448728 DOI: 10.1038/s41598-022-19398-9] [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: 04/05/2022] [Accepted: 08/29/2022] [Indexed: 01/18/2023] Open
Abstract
Brucellosis is a zoonotic disease caused by Brucella abortus. An efficient immune response is crucial for curing brucellosis. The inflammasome plays a significant role in the immune response. It is unclear which inflammasome is active in acute and chronic brucellosis and how its levels relate to inflammatory cytokines. A total of 40 patients with acute or chronic brucellosis and 20 healthy volunteers had peripheral blood samples collected. The expression levels of AIM2, NLRP3, ASC, and Caspase-1 were determined by a real-time polymerase chain reaction from RNA and serum samples, and IL-1β, IL-18, and IFN-γ were measured by enzyme-linked immunosorbent assay. In the acute brucellosis group, AIM2 expression was significantly higher, while ACS expression was significantly lower than that of healthy volunteers. In patients with chronic brucellosis, AIM2 expression was significantly lower, while Caspase-1 expression was significantly higher than that of healthy volunteers. Serum IL-18 and IFN-γ levels were significantly higher in patients with acute brucellosis than in healthy controls. The IFN-γ level was also significantly higher in patients with chronic brucellosis than in healthy controls. The inflammasome responds differently in different stages of brucellosis. The inflammasome may be the site of action of immune escape in brucellosis.
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86
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Wei X, Xie F, Zhou X, Wu Y, Yan H, Liu T, Huang J, Wang F, Zhou F, Zhang L. Role of pyroptosis in inflammation and cancer. Cell Mol Immunol 2022; 19:971-992. [PMID: 35970871 PMCID: PMC9376585 DOI: 10.1038/s41423-022-00905-x] [Citation(s) in RCA: 228] [Impact Index Per Article: 114.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/11/2022] [Indexed: 12/13/2022] Open
Abstract
Pyroptosis is a form of programmed cell death mediated by gasdermin and is a product of continuous cell expansion until the cytomembrane ruptures, resulting in the release of cellular contents that can activate strong inflammatory and immune responses. Pyroptosis, an innate immune response, can be triggered by the activation of inflammasomes by various influencing factors. Activation of these inflammasomes can induce the maturation of caspase-1 or caspase-4/5/11, both of which cleave gasdermin D to release its N-terminal domain, which can bind membrane lipids and perforate the cell membrane. Here, we review the latest advancements in research on the mechanisms of pyroptosis, newly discovered influencing factors, antitumoral properties, and applications in various diseases. Moreover, this review also provides updates on potential targeted therapies for inflammation and cancers, methods for clinical prevention, and finally challenges and future directions in the field.
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Affiliation(s)
- Xiang Wei
- International Biomed-X Research Center, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China
| | - Feng Xie
- Institutes of Biology and Medical Science, Soochow University, Suzhou, 215123, PR China
| | - Xiaoxue Zhou
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China
| | - Yuchen Wu
- Department of Clinical Medicine, The First School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, PR China
| | - Haiyan Yan
- School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang, 310015, PR China
| | - Ting Liu
- Department of Cell Biology and Department of General Surgery of Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, Zhejiang, PR China
| | - Jun Huang
- Zhejiang Provincial Key Lab of Geriatrics and Geriatrics Institute of Zhejiang Province, Department of Geriatrics, Zhejiang Hospital, Hangzhou, Zhejiang, 310030, PR China.
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China.
| | - Fangwei Wang
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China.
| | - Fangfang Zhou
- Institutes of Biology and Medical Science, Soochow University, Suzhou, 215123, PR China.
| | - Long Zhang
- International Biomed-X Research Center, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China.
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China.
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87
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Dong Z, Sun X, Tang Y, Luo S, Jia H, Xu Q, Jiang Q, Loor JJ, Xu W, Xu C. β-hydroxybutyrate impairs monocyte function via the ROS-NLR family pyrin domain-containing three inflammasome (NLRP3) pathway in ketotic cows. Front Vet Sci 2022; 9:925900. [PMID: 36105004 PMCID: PMC9464975 DOI: 10.3389/fvets.2022.925900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Cows with ketosis display severe metabolic stress and immune dysfunction which renders them more susceptible to infections. Monocytes, one of the major subtypes of white blood cells, play an important role in innate immune defense against infections. Thus, the aim of this study was to investigate alterations in immune function, reactive oxygen species (ROS) production and activity of the NLR family pyrin domain containing 3 (NLRP3) inflammasome pathway in monocytes (CD14+) of cows with clinical ketosis (CK). Twelve healthy multiparous Holstein cows [blood β-hydroxybutyrate (BHB) concentration < 1.2 mM] and 12 cows with CK (BHB > 3.0 mM) at 3 to 14 days in milk were used for blood sample collection. To determine effects of BHB on phagocytosis, ROS and protein abundance of the NLRP3 inflammasome pathway in vitro, monocytes isolated from healthy cows were treated with 3.0 mM BHB for 0, 6, 12 or 24 h. Dry matter intake (22.7 vs. 19.0 kg) was lower in cows with CK. Serum concentrations of fatty acids (0.30 vs. 0.88 mM) and BHB (0.52 vs. 3.78 mM) were greater in cows with CK, whereas concentration of glucose was lower (4.09 vs. 2.23 mM). The adhesion, migration and phagocytosis of monocytes were lower in cows with CK, but apoptosis and ROS content were greater. Protein abundance of NLRP3, cysteinyl aspartate specific proteinase 1 (caspase 1) and interleukin-1B p17 (IL1B p17) were greater in monocytes of cows with CK, while abundance of NADPH oxidase isoform 2 (NOX2) was lower. Compared with 0 h BHB, ROS content and apoptosis were greater in the monocytes challenged for 6, 12 or 24 h BHB. Compared with 0 h BHB, protein abundance of NLRP3, caspase 1, IL1B p17 and concentration of IL1B in medium were greater in the monocytes challenged for 6, 12 or 24 h BHB. However, compared with 0 h BHB, protein abundance of NOX2 and phagocytosis of monocytes were lower in the monocytes challenged for 6, 12 or 24 h BHB. Overall, the data suggested that exogenous BHB activated the ROS-NLRP3 pathway, which might be partly responsible for immune dysfunction of dairy cows with CK.
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Affiliation(s)
- Zhihao Dong
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Xudong Sun
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Yan Tang
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Shengbin Luo
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Hongdou Jia
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Qiushi Xu
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Qianming Jiang
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL, United States
| | - Juan J. Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL, United States
| | - Wei Xu
- Department of Biosystems, Biosystems Technology Cluster, KULeuven, Geel, Belgium
| | - Chuang Xu
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
- *Correspondence: Chuang Xu
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88
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Rui WJ, Li S, Yang L, Liu Y, Fan Y, Hu YC, Ma CM, Wang BW, Shi JP. Microglial AIM2 alleviates antiviral-related neuro-inflammation in mouse models of Parkinson's disease. Glia 2022; 70:2409-2425. [PMID: 35959803 DOI: 10.1002/glia.24260] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/29/2022] [Accepted: 07/30/2022] [Indexed: 11/05/2022]
Abstract
Inflammasome involvement in Parkinson's disease (PD) has been intensively investigated. Absent in melanoma 2 (AIM2) is an essential inflammasome protein known to contribute to the development of several neurological diseases. However, a specific role for AIM2 in PD has not been reported. In this study, we investigated the effect of AIM2 in the N-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced PD model by use of various knockout and bone marrow chimeric mice. The mechanism of action for AIM2 in PD was assessed by RNA-sequencing and in vitro primary microglial transfection. Results were validated in the A30P transgenic mouse model of PD. In the MPTP mouse model, AIM2 activation was found to negatively regulate neuro-inflammation independent of the inflammasome. Microglial AIM2 deficiency exacerbated behavioral and pathological features of both MPTP-induced and transgenic PD mouse models. Mechanistically, AIM2 reduced cyclic GMP-AMP synthase (cGAS)-mediated antiviral-related inflammation by inhibition of AKT-interferon regulatory factor 3 (IRF3) phosphorylation. These results demonstrate microglial AIM2 to inhibit the antiviral-related neuro-inflammation associated with PD and provide for a foundation upon which to identify new therapeutic targets for treatment of the disease.
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Affiliation(s)
- Wen-Juan Rui
- Department of Clinical Laboratory, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Sheng Li
- Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Immunology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lin Yang
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Ying Liu
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yi Fan
- Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ying-Chao Hu
- Department of Immunology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chun-Mei Ma
- Department of Immunology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Bing-Wei Wang
- Department of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Jing-Ping Shi
- Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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89
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circ-Katnal1 Enhances Inflammatory Pyroptosis in Sepsis-Induced Liver Injury through the miR-31-5p/GSDMD Axis. Mediators Inflamm 2022; 2022:8950130. [PMID: 35979014 PMCID: PMC9377930 DOI: 10.1155/2022/8950130] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/24/2022] [Accepted: 06/16/2022] [Indexed: 11/18/2022] Open
Abstract
Background. Sepsis is a systemic inflammatory response that can elicit organ dysfunction as well as circulatory diseases in serious cases. When inflammatory responses are especially dysregulated, severe complications can arise, including sepsis-induced liver injury. Various microRNAs along with circular (circ) RNAs are involved in inflammatory responses; nevertheless, their functions in regulating sepsis-induced liver injury remain unknown. The cecal ligation and puncture (CLP) procedure can induce liver injury as well as polymicrobial sepsis. Methods. In this study, CLP was used to induce liver injury as well as polymicrobial sepsis. Then, liver function, inflammatory cytokine expression, and hepatic histopathology were evaluated. High-throughput sequencing was employed to investigate the abnormal hepatic circRNA expression after CLP. Raw264.7 cells were utilized to simulation an in vitro sepsis inflammation model with LPS induce. The relative mRNA as well as protein levels of TNF-α, IL-1β, and IL-6 was explored by quantitative polymerase chain reaction (PCR) and enzyme-linked immunosorbent assays. We explored functional connections among circRNAs, miR-31-5p, and gasdermin D (GSDMD) using dual-luciferase reporter assays. Western blot was employed to test GSDMD, caspase-1, and NLRP3 expression in mice and cell models. Results. Our results showed that CLP-induced sepsis promoted liver injury via increasing inflammatory pyroptosis. The abnormal expression of circ-Katnal1 played an important role in CLP-induced sepsis. Downregulating circ-Katnal1 suppressed LPS-induced inflammatory pyroptosis in Raw264.7 cells. Bioinformatics and luciferase reporter results confirmed that miR-31-5p and GSDMD were downstream targets of circ-Katnal1. Inhibiting miR-31-5p or upregulating GSDMD reversed the protective effects of silencing circ-Katnal1. Conclusion. Taken together, circ-Katnal1 enhanced inflammatory pyroptosis in sepsis-induced liver injury through the miR-31-5p/GSDMD axis.
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90
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Xu Y, Xu Y, Blevins H, Guo C, Biby S, Wang XY, Wang C, Zhang S. Development of sulfonamide-based NLRP3 inhibitors: Further modifications and optimization through structure-activity relationship studies. Eur J Med Chem 2022; 238:114468. [PMID: 35635948 PMCID: PMC10084479 DOI: 10.1016/j.ejmech.2022.114468] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/11/2022] [Accepted: 05/14/2022] [Indexed: 11/26/2022]
Abstract
NLRP3 inflammasome dysregulation has been observed in many human diseases including neurodegenerative disorders. Thus, development of small molecule inhibitors targeting this protein complex represents a promising strategy to achieve disease intervention. In our continuing efforts to develop NLRP3 inhibitors, a recently identified lead inhibitor, YQ128, was further modified and optimized. The structure-activity relationship studies of this lead compound suggested its flexibility for structural modifications while the sulfonamide and benzyl moiety demonstrated being important for selectivity. Additionally, the systematic SAR studies also provided insights for designing NLRC4 and AIM2 inflammasome inhibitors. A new lead inhibitor, 19, was identified with improved potency (IC50: 0.12 ± 0.01 μM) and binding affinity (KD: 84 nM). Further characterization of this lead compound using wild type and nlrp3-/- mice confirmed its in vivo selective target engagement. PET studies using a radiotracer based on the structure of 19 also demonstrated its improved brain penetration compared to previous lead compounds. These results strongly encourage further testing of 19 in disease models.
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Affiliation(s)
- Yiming Xu
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, 23298, United States
| | - Yulong Xu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, 02129, United States
| | - Hallie Blevins
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, 23298, United States
| | - Chunqing Guo
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Richmond, VA, 23298, United States
| | - Savannah Biby
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, 23298, United States
| | - Xiang-Yang Wang
- Department of Human & Molecular Genetics, Virginia Commonwealth University, Richmond, VA, 23298, United States
| | - Changning Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, 02129, United States
| | - Shijun Zhang
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, 23298, United States.
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Wang F, Gu L, Wang Y, Sun D, Zhao Y, Meng Q, Yin L, Xu L, Lu X, Peng J, Lin Y, Sun P. MicroRNA-122a aggravates intestinal ischemia/reperfusion injury by promoting pyroptosis via targeting EGFR-NLRP3 signaling pathway. Life Sci 2022; 307:120863. [DOI: 10.1016/j.lfs.2022.120863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/25/2022] [Accepted: 08/02/2022] [Indexed: 11/26/2022]
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Pathogen-selective killing by guanylate-binding proteins as a molecular mechanism leading to inflammasome signaling. Nat Commun 2022; 13:4395. [PMID: 35906252 PMCID: PMC9338265 DOI: 10.1038/s41467-022-32127-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/18/2022] [Indexed: 11/08/2022] Open
Abstract
Inflammasomes are cytosolic signaling complexes capable of sensing microbial ligands to trigger inflammation and cell death responses. Here, we show that guanylate-binding proteins (GBPs) mediate pathogen-selective inflammasome activation. We show that mouse GBP1 and GBP3 are specifically required for inflammasome activation during infection with the cytosolic bacterium Francisella novicida. We show that the selectivity of mouse GBP1 and GBP3 derives from a region within the N-terminal domain containing charged and hydrophobic amino acids, which binds to and facilitates direct killing of F. novicida and Neisseria meningitidis, but not other bacteria or mammalian cells. This pathogen-selective recognition by this region of mouse GBP1 and GBP3 leads to pathogen membrane rupture and release of intracellular content for inflammasome sensing. Our results imply that GBPs discriminate between pathogens, confer activation of innate immunity, and provide a host-inspired roadmap for the design of synthetic antimicrobial peptides that may be of use against emerging and re-emerging pathogens. Guanylate-binding proteins (GBP) have a function in inflammasome formation and pathogen defence. Here the authors show that these GBP proteins are able to kill certain bacteria and promote selective inflammasome activation and that this is mediated by specific GBP protein regions.
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93
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Pucinelli CM, Lima RB, Almeida LKY, Lucisano MP, Córdoba AZ, Marchesan JT, da Silva LAB, da Silva RAB. Interferon‐gamma inducible protein 16 and type I interferon receptors expression in experimental apical periodontitis induced in wild type mice. Int Endod J 2022; 55:1042-1052. [DOI: 10.1111/iej.13802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 11/30/2022]
Affiliation(s)
- C. M. Pucinelli
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - R. B. Lima
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - L. K. Y. Almeida
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - M. P. Lucisano
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - A. Z. Córdoba
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - J. T. Marchesan
- Department of Periodontology ‐ University of North Carolina at Chapel Hill School of Dentistry Chapel Hill NC EUA
| | - L. A. B. da Silva
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
| | - R. A. B. da Silva
- Department of Pediatric Dentistry ‐ University of São Paulo School of Dentistry of Ribeirão Preto Ribeirão Preto SP Brazil
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94
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Luo R, Li X, Wang D. Reprogramming Macrophage Metabolism and its Effect on NLRP3 Inflammasome Activation in Sepsis. Front Mol Biosci 2022; 9:917818. [PMID: 35847986 PMCID: PMC9276983 DOI: 10.3389/fmolb.2022.917818] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/09/2022] [Indexed: 12/29/2022] Open
Abstract
Sepsis, the most common life-threatening multi-organ dysfunction syndrome secondary to infection, lacks specific therapeutic strategy due to the limited understanding of underlying mechanisms. It is currently believed that inflammasomes play critical roles in the development of sepsis, among which NLRP3 inflammasome is involved to most extent. Recent studies have revealed that dramatic reprogramming of macrophage metabolism is commonly occurred in sepsis, and this dysregulation is closely related with the activation of NLRP3 inflammasome. In view of the fact that increasing evidence demonstrates the mechanism of metabolism reprogramming regulating NLRP3 activation in macrophages, the key enzymes and metabolites participated in this regulation should be clearer for better interpreting the relationship of NLRP3 inflammasome and sepsis. In this review, we thus summarized the detail mechanism of the metabolic reprogramming process and its important role in the NLRP3 inflammasome activation of macrophages in sepsis. This mechanism summarization will reveal the applicational potential of metabolic regulatory molecules in the treatment of sepsis.
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Affiliation(s)
- Ruiheng Luo
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xizhe Li
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
- Hunan Engineering Research Center for Pulmonary Nodules Precise Diagnosis & Treatment, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Dan Wang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Dan Wang,
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95
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Ji ZJ, Shi Y, Li X, Hou R, Yang Y, Liu ZQ, Duan XC, Liu Q, Chen WD, Peng DY. Neuroprotective Effect of Taohong Siwu Decoction on Cerebral Ischemia/Reperfusion Injury via Mitophagy-NLRP3 Inflammasome Pathway. Front Pharmacol 2022; 13:910217. [PMID: 35754465 PMCID: PMC9213799 DOI: 10.3389/fphar.2022.910217] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/16/2022] [Indexed: 12/02/2022] Open
Abstract
Objective: Globally, cerebral ischemia has been shown to be the second leading cause of death. Our previous studies have shown that Taohong Siwu Decoction (THSWD) exhibits obvious neuroprotective effects on cerebral ischemia/reperfusion (I/R) injury (CIRI). In this study, we further explored the modulatory effect of THSWD on mitochondrial autophagy in CIRI and the relationship between modulatory effect and NLRP3 inflammatory vesicle activation, so as to further explain the mechanism of neuroprotective effect of THSWD. Methods: Middle cerebral artery occlusion reperfusion (MCAO/R) model in rats was built to simulate I/R. Adult male SD rats (220–270 g) were randomly divided into the following four groups: the sham group, the MCAO/R group, the MCAO/R + THSWD group, and the MCAO/R + THSWD + Mitochondrial division inhibitor 1 (Mdivi-1) group. Neurological defect scores were used to evaluate neurological function. 2,3,5-Triphenyltetrazolium chloride (TTC) staining was conducted to measure cerebral infarct volume. Nissl staining, H&E staining and TUNEL staining were executed to detect ischemic cortical neuronal cell viability and apoptosis. Electron microscopy was used to observe the ultrastructural changes of mitochondria. Total Reactive Oxygen Species (ROS) in tissue were measured by fluorescence spectrophotometry, and the activation status of microglia was evaluated by Iba-1/CD16 immunofluorescence staining. The levels of mitophagy-related proteins (LC3, Parkin, PINK1), NLRP3 inflammasome-related proteins (NLRP3, ASC, Pro-caspase-1, Cleaved-caspase-1), and inflammatory cytokines (Pro-IL-18, Pro-IL-1β, IL-18, IL-1β) were evaluated by western blotting. Results: The studies showed that THSWD treatment alleviated cerebral infarction and neurological deficiencies. THSWD upregulated the expressions of autophagy markers (LC3-II/LC3-I and Beclin1) mitochondrial autophagy markers (Parkin and PINK1) after CIRI. Furthermore, THSWD treatment attenuated microglia activation and damage to mitochondrial structures, thereby reducing ROS production and NLRP3 inflammasome activation. In contrast, the mitochondrial autophagy inhibitor Mdivi-1 inhibited the above beneficial effects of THSWD. Conclusions: THSWD exhibits neuroprotective effects against MCAO/R in rats by enhancing mitochondrial autophagy and reducing NLRP3 inflammasome activation.
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Affiliation(s)
- Zhao-Jie Ji
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Yun Shi
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Xing Li
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Rui Hou
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Yu Yang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Zhu-Qing Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Xian-Chun Duan
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Qing Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Wei-Dong Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
| | - Dai-Yin Peng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Province Key Laboratory of Chinese Medicinal Formula, Anhui University of Chinese Medicine, Hefei, China
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96
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Mata-Martínez E, Díaz-Muñoz M, Vázquez-Cuevas FG. Glial Cells and Brain Diseases: Inflammasomes as Relevant Pathological Entities. Front Cell Neurosci 2022; 16:929529. [PMID: 35783102 PMCID: PMC9243488 DOI: 10.3389/fncel.2022.929529] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/27/2022] [Indexed: 12/13/2022] Open
Abstract
Inflammation mediated by the innate immune system is a physiopathological response to diverse detrimental circumstances such as microbe infections or tissular damage. The molecular events that underlie this response involve the assembly of multiprotein complexes known as inflammasomes. These assemblages are essentially formed by a stressor-sensing protein, an adapter protein and a non-apoptotic caspase (1 or 11). The coordinated aggregation of these components mediates the processing and release of pro-inflammatory interleukins (IL-β and IL-18) and cellular death by pyroptosis induction. The inflammatory response is essential for the defense of the organism; for example, it triggers tissue repair and the destruction of pathogen microbe infections. However, when inflammation is activated chronically, it promotes diverse pathologies in the lung, liver, brain and other organs. The nervous system is one of the main tissues where the inflammatory process has been characterized, and its implications in health and disease are starting to be understood. Thus, the regulation of inflammasomes in specific cellular types of the central nervous system needs to be thoroughly understood to innovate treatments for diverse pathologies. In this review, the presence and participation of inflammasomes in pathological conditions in different types of glial cells will be discussed.
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97
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Angosto-Bazarra D, Molina-López C, Pelegrín P. Physiological and pathophysiological functions of NLRP6: pro- and anti-inflammatory roles. Commun Biol 2022; 5:524. [PMID: 35650327 PMCID: PMC9160023 DOI: 10.1038/s42003-022-03491-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/12/2022] [Indexed: 12/26/2022] Open
Abstract
The nucleotide-binding oligomerization and leucine-rich repeat receptor (NLR) protein family consists of important immune sensors that form inflammasomes, a cytosolic multi-protein platform that induces caspase-1 activation and is involved in different inflammatory pathologies. The NLR family pyrin domain containing 6 (NLRP6) is a receptor that can signal by forming inflammasomes, but which can also play an important role without forming inflammasomes. NLRP6 regulates intestinal homeostasis and inflammation, but also is involved in cancer, the nervous system or liver diseases, with both protective and deleterious consequences. In the present article, we review the different roles of NLRP6 in these processes and offer new insights into NLRP6 activation. This review discusses emerging roles for the NLR family pyrin domain containing 6 receptor (NLRP6) in intestinal homeostasis, inflammation, cancer, the nervous system and liver disease.
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Affiliation(s)
- Diego Angosto-Bazarra
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain.
| | - Cristina Molina-López
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain
| | - Pablo Pelegrín
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, 30120, Murcia, Spain. .,Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120, Murcia, Spain.
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98
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Wu HM, Lo TC, Tsai CL, Chen LH, Huang HY, Wang HS, Yu J. Extracellular Vesicle-Associated MicroRNA-138-5p Regulates Embryo Implantation and Early Pregnancy by Adjusting GPR124. Pharmaceutics 2022; 14:pharmaceutics14061172. [PMID: 35745744 PMCID: PMC9230557 DOI: 10.3390/pharmaceutics14061172] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 02/04/2023] Open
Abstract
Functional embryo–maternal interactions occur during the embryo implantation and placentation. Extracellular vesicles with microRNA (miR) between cells have been considered of critical importance for embryo implantation and the programming of human pregnancy. MiR-138-5p functions as the transcriptional regulator of G protein-coupled receptor 124 (GPR124). However, the signaling pathway of miR138-5p- and GPR124-adjusted NLRP3 inflammasome activation remains unclear. In this study, we examine the roles of the miR138-5p and GPR124-regulated inflammasome in embryo implantation and early pregnancy. Human decidual stromal cells were isolated from the abortus tissue and collected by curettage from missed abortion patients and normal pregnant women at 6- to 12-week gestation, after informed consent. Isolated extracellular vesicles from decidua and decidual stromal cells were confirmed by transmission electron microscopy (TEM). Next-Generation Sequencing (NGS) and microarray were performed for miR analysis. The predicated target genes of the differentially expressed miR were analyzed to identify the target genes and their pathway. We demonstrated the down-regulation of miR-138-5p and the overexpression of GPR124 in spontaneous miscarriage compared to normal pregnancy. We also showed the excessive activation of the NLRP3 inflammasome in spontaneous miscarriage compared to normal pregnancy. Here, we newly demonstrate that the miR-138-5p and GPR124-adjusted NLRP3 inflammasome were expressed in extracellular vesicles derived from decidua and decidual stromal cells, indicating that the miR-138-5p, GPR124 and NLRP3 (NACHT, LRR, and PYD domains-containing protein 3) inflammasome have a potential modulatory role on the decidual programming and placentation of human pregnancy. Our findings represent a new concept regarding the role of extracellular vesicles, miR-138-5p, GPR124, and the NLRP3 inflammasome in normal early pregnancy and spontaneous miscarriage.
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Affiliation(s)
- Hsien-Ming Wu
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (C.-L.T.); (L.-H.C.); (H.-Y.H.); (H.-S.W.)
- Correspondence:
| | - Tzu-Chi Lo
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (T.-C.L.); (J.Y.)
| | - Chia-Lung Tsai
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (C.-L.T.); (L.-H.C.); (H.-Y.H.); (H.-S.W.)
| | - Liang-Hsuan Chen
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (C.-L.T.); (L.-H.C.); (H.-Y.H.); (H.-S.W.)
| | - Hong-Yuan Huang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (C.-L.T.); (L.-H.C.); (H.-Y.H.); (H.-S.W.)
| | - Hsin-Shih Wang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (C.-L.T.); (L.-H.C.); (H.-Y.H.); (H.-S.W.)
| | - John Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan; (T.-C.L.); (J.Y.)
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99
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Challagundla N, Saha B, Agrawal-Rajput R. Insights into inflammasome regulation: cellular, molecular, and pathogenic control of inflammasome activation. Immunol Res 2022; 70:578-606. [PMID: 35610534 DOI: 10.1007/s12026-022-09286-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 05/04/2022] [Indexed: 02/07/2023]
Abstract
Maintenance of immune homeostasis is an intricate process wherein inflammasomes play a pivotal role by contributing to innate and adaptive immune responses. Inflammasomes are ensembles of adaptor proteins that can trigger a signal following innate sensing of pathogens or non-pathogens eventuating in the inductions of IL-1β and IL-18. These inflammatory cytokines substantially influence the antigen-presenting cell's costimulatory functions and T helper cell differentiation, contributing to adaptive immunity. As acute and chronic disease conditions may accompany parallel tissue damage, we analyze the critical role of extracellular factors such as cytokines, amyloids, cholesterol crystals, etc., intracellular metabolites, and signaling molecules regulating inflammasome activation/inhibition. We develop an operative framework for inflammasome function and regulation by host cell factors and pathogens. While inflammasomes influence the innate and adaptive immune components' interplay modulating the anti-pathogen adaptive immune response, pathogens may target inflammasome inhibition as a survival strategy. As trapped between health and diseases, inflammasomes serve as promising therapeutic targets and their modus operandi serves as a scientific rationale for devising better therapeutic strategies.
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Affiliation(s)
- Naveen Challagundla
- Immunology lab, Indian Institute of Advanced Research, Gandhinagar, Gujarat, 382007, India
| | - Bhaskar Saha
- National Centre for Cell Science, Lab-5, Ganeshkhind, Pune, Maharashtra, 411007, India
| | - Reena Agrawal-Rajput
- Immunology lab, Indian Institute of Advanced Research, Gandhinagar, Gujarat, 382007, India.
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100
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Targeting the TLR4/NF-κΒ Axis and NLRP1/3 Inflammasomes by Rosuvastatin: A Role in Impeding Ovariectomy-Induced Cognitive Decline Neuropathology in Rats. Mol Neurobiol 2022; 59:4562-4577. [PMID: 35578102 DOI: 10.1007/s12035-022-02852-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/25/2022] [Indexed: 01/29/2023]
Abstract
Postmenopausal hormone-related cognitive decline has gained an immense interest to explore the underlying mechanisms and potential therapies. The current work aimed to study the possible beneficial effect of rosuvastatin (ROS) on the cognitive decline induced by ovariectomy in rats. Four groups were used as follows: control group, control + rosuvastatin, ovariectomy, and ovariectomy + rosuvastatin. After sham operation or ovariectomy, rats were given saline or oral dosages of ROS (2 mg/kg) every day for 30 days. The cognitive functions were assessed using the Morris water maze paradigm, Y-maze test, and new object recognition test. After rat killing, TLR4, caspase-8, and NLRP mRNA expression and protein levels of ASC, AIM2, caspase-1, NLRP1, and PKR were measured in hippocampus. This was complemented by the estimation of tissue content of NF-κΒ, IL-1β, and IL-18 and serum lipid profile quantification. Rosuvastatin showed a promising potential for halting the cognitive impairments induced by estrogen decline through interfering with the TLR4/NF-κΒ/NLRP1/3 axis and inflammasomes activation and the subsequent pyroptosis. This was complemented by the amendment in the deranged lipid profile. Rosuvastatin may exert a beneficial role in attenuating the inflammatory and apoptotic signaling mechanisms associated with postmenopausal cognitive decline. Further investigations are needed to unveil the relationship between deranged plasma lipids and cognitive function.
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