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Wu JP, Wu C, Ma YJ, Zhu JB, Ma LL, Kong FJ. AIM2 Deficiency Alleviates Cardiac Inflammation and Hypertrophy in HFD/STZ-Induced Diabetic Mice by Inhibiting the NLRC4/IRF1 Signaling Pathway. J Cardiovasc Transl Res 2024:10.1007/s12265-024-10556-0. [PMID: 39230659 DOI: 10.1007/s12265-024-10556-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Accepted: 08/19/2024] [Indexed: 09/05/2024]
Abstract
Absent in melanoma 2(AIM2) exacerbates atherosclerosis by inflammasome assembly. However, AIM2-mediated inflammation in diabetic cardiomyopathy remains incompletely understood. Here we investigate the role of AIM2 in high glucose (HG)- and diabetes-induced inflammatory cardiomyopathy. By RNA-seq, we found that AIM2 were significantly upregulated in HG-induced macrophages, upregulation of AIM2 in cardiac infiltrating macrophages was confirmed in a high-fat diet (HFD)/streptozotocin (STZ)-induceddiabetic mouse model . Therefore, AIM2 knockout mice were constructed. Compared to WT mice, HFD/STZ-induced cardiac hypertrophy and dysfunction were significantly improved in AIM2-/- mice, despite no changes in blood glucose and body weight. Further, AIM2 deficiency inhibited cardiac recruitment of M1-macrophages and cytokine production. Mechanistically, AIM2-deficient macrophgaes reduced IL-1β and TNF-α secretion, which impaired the NLRC4/IRF1 signaling in cardiomyocytes, and reduced further recruitment of macrophages, attenuated cardiac inflammation and hypertrophy, these effects were confirmed by silencing IRF1 in WT mice, and significantly reversed by overexpression of IRF1 in AIM2-/- mice. Taken together, our findings suggest that AIM2 serves as a novel target for the treatment of diabetic cardiomyopathy.
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Affiliation(s)
- Jian-Ping Wu
- Department of Anesthesiology and Pain Medicine, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, China
| | - Cheng Wu
- Department of Anesthesiology and Pain Medicine, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, China
| | - Yuan-Ji Ma
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Yi Xue Yuan Rd, Xu Hui District, Shanghai, 200032, China
| | - Jian-Bing Zhu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Yi Xue Yuan Rd, Xu Hui District, Shanghai, 200032, China
| | - Lei-Lei Ma
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Yi Xue Yuan Rd, Xu Hui District, Shanghai, 200032, China.
| | - Fei-Juan Kong
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Wu Jin Rd, Hong Kou District, Shanghai, 200032, China.
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2
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Yang Z, Xia H, Lai J, Qiu L, Lin J. Artesunate alleviates sepsis-induced liver injury by regulating macrophage polarization via the lncRNA MALAT1/PTBP1/IFIH1 axis. Diagn Microbiol Infect Dis 2024; 110:116383. [PMID: 38889486 DOI: 10.1016/j.diagmicrobio.2024.116383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 05/13/2024] [Accepted: 05/24/2024] [Indexed: 06/20/2024]
Abstract
BACKGROUND The present study aimed to explore the regulatory effects of artesunate on macrophage polarization in sepsis. METHODS Cell models and mice models were established using lipopolysaccharide (LPS), followed by treatment with various concentrations of artesunate. The phenotype of the macrophages was determined by flow cytometry. RNA immunoprecipitation was used to confirm the binding between MALAT1 and polypyrimidine tract-binding protein 1 (PTBP1), as well as between PTBP1 and interferon-induced helicase C domain-containing protein 1 (IFIH1). RESULTS Treatment with artesunate inhibited M1 macrophage polarization in Kupffer cells subjected to LPS stimulation by downregulating MALAT1. Furthermore, MALAT1 abolished the inhibitory effect of artesunate on M1 macrophage polarization by recruiting PTBP1 to promote IFIH. In vivo experiments confirmed that artesunate alleviated septic liver injury by affecting macrophage polarization via MALAT1. CONCLUSION The present study showed that artesunate alleviates LPS-induced sepsis in Kupffer cells by regulating macrophage polarization via the lncRNA MALAT1/PTBP1/IFIH1 axis.
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Affiliation(s)
- Zhaobin Yang
- Department of Medical Intensive Care Unit, Zhangzhou Municipal Hospital of Fujian Province, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou City, Fujian Province, China
| | - Hao Xia
- Department of Medical Intensive Care Unit, Zhangzhou Municipal Hospital of Fujian Province, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou City, Fujian Province, China
| | - Jiawei Lai
- Department of Medical Intensive Care Unit, Zhangzhou Municipal Hospital of Fujian Province, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou City, Fujian Province, China
| | - Luzhen Qiu
- Department of Medical Intensive Care Unit, Zhangzhou Municipal Hospital of Fujian Province, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou City, Fujian Province, China.
| | - Jiandong Lin
- Department of Intensive Care Unit, The First Affiliated Hospital of Fujian Medical University, Fuzhou City, Fujian Province, China.
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3
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Hao Y, Fu H, Li K, Zou X, Zhou X, Tang X, Liu C, Zhou F. Inhibition of GBP1 alleviates pyroptosis of human pulmonary microvascular endothelial cells through STAT1/NLRP3/GSDMD pathway. Mol Immunol 2024; 173:1-9. [PMID: 38996607 DOI: 10.1016/j.molimm.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/16/2024] [Accepted: 07/08/2024] [Indexed: 07/14/2024]
Abstract
Restoring and maintaining the function of endothelial cells is critical for acute respiratory distress syndrome (ARDS). Guanylate binding protein 1(GBP1) is proved to elevated in ARDS patients, but its role and mechanism remains unclear. The objective of this study is to investigate the internal mechanism of GBP1 in lung injury. Our study showed that when the LPS and IFN-γ induced human Pulmonary Microvascular Endothelial Cells (HPMECs) injury model was established, cell viability was significantly reduced, and the levels of GBP1 levels and inflammatory factors were significantly increased. When transfection with si-GBP1, low expression of GBP1 promoted cell proliferation and migration, and decreased the expression of downstream inflammatory factors. Furthermore, the inhibition of GBP1 significantly reduced the occurrence of cell pyroptosis and the expression of NLRP3 and STAT1. Our study indicated that GBP1 alleviates endothelial pyroptosis and inflammation through STAT1 / NLRP3/GSDMD signaling pathway, and GBP1 may be a new target in the treatment of lung injury in the future.
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Affiliation(s)
- Yingting Hao
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Hongxue Fu
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Kaili Li
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Xuan Zou
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Xin Zhou
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Xiyue Tang
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Chang Liu
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
| | - Fachun Zhou
- Department of Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China.
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4
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Liu Z, Ting Y, Li M, Li Y, Tan Y, Long Y. From immune dysregulation to organ dysfunction: understanding the enigma of Sepsis. Front Microbiol 2024; 15:1415274. [PMID: 39252831 PMCID: PMC11381394 DOI: 10.3389/fmicb.2024.1415274] [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: 04/10/2024] [Accepted: 08/05/2024] [Indexed: 09/11/2024] Open
Abstract
Sepsis is a syndrome precipitated by immune dysregulation in response to infection, and represents a pivotal factor in global mortality attributed to diseases. The recent consensus delineates sepsis as a perilous state of organ dysfunction arising from the host's maladaptive reaction to infection. It masks the complexity and breadth of the immune mechanisms involved in sepsis, which is characterized by simultaneous hyperinflammation and immunosuppression. Sepsis is highly correlated with the dysregulation of immune response, which is mainly mediated by various immune cells and their interactions. This syndrome can lead to a plethora of complications, encompassing systemic inflammatory response, metabolic disturbances, infectious shock, MODS, and DIC. Furthermore, more research studies have been conducted on sepsis in the past few years. The pathological characteristics of sepsis have been improved or treated by targeting signaling pathways like NF-B, JAK-STAT, PI3K-Akt, and p38-MAPK. Combined drug therapy is better than single drug therapy for sepsis. This article will review the latest progress in the pathogenesis and treatment of sepsis.
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Affiliation(s)
- Zhi Liu
- Department of Infectious Disease, Graduate Collaborative Training Base of Zhuzhou, Hengyang Medical School, University of South China, Hengyang, China
- Department of Infectious Disease, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, China
| | - Yuan Ting
- Department of Infectious Disease, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, China
| | - Miao Li
- Jishou University Zhuzhou Clinical College, Medical College, Jishou University, Zhuzhou, China
- Medical College, Jishou University, Xiangxi Tujia and Miao Autonomous Prefecture, Zhuzhou, China
| | - Yukun Li
- Department of Assisted Reproductive Centre, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, China
| | - Yingzheng Tan
- Department of Infectious Disease, Graduate Collaborative Training Base of Zhuzhou, Hengyang Medical School, University of South China, Hengyang, China
- Department of Infectious Disease, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, China
| | - Yunzhu Long
- Department of Infectious Disease, Graduate Collaborative Training Base of Zhuzhou, Hengyang Medical School, University of South China, Hengyang, China
- Department of Infectious Disease, Zhuzhou Central Hospital, Xiangya Hospital Zhuzhou Central South University, Central South University, Zhuzhou, China
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5
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Ramsey HE, Gorska AE, Smith BN, Monteith AJ, Fuller L, Arrate MP, Savona MR. TLR3 agonism augments CD47 inhibition in acute myeloid leukemia. Haematologica 2024; 109:2111-2121. [PMID: 38152031 PMCID: PMC11215363 DOI: 10.3324/haematol.2023.283850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 12/15/2023] [Indexed: 12/29/2023] Open
Abstract
CD47-SIRPa is a myeloid check point pathway that promotes phagocytosis of cells lacking markers for self-recognition. Tumor cells can overexpress CD47 and bind to SIRPa on macrophages, preventing phagocytosis. CD47 expression is enhanced and correlated with a negative prognosis in acute myeloid leukemia (AML), with its blockade leading to cell clearance. ALX90 is an engineered fusion protein with high affinity for CD47. Composed of the N-terminal D1 domain of SIRPα genetically linked to an inactive Fc domain from human immunoglobulin (Ig) G, ALX90 is designed to avoid potential toxicity of CD47-expressing red blood cells. Venetoclax (VEN) is a specific B-cell lymphoma-2 (BCL-2) inhibitor that can restore apoptosis in malignant cells. In AML, VEN is combined with azanucleosides to induce superior remission rates, however treatment for refractory/relapse is an unmet need. We questioned whether the anti-tumor activity of a VENbased regimen can be augmented through CD47 inhibition (CD47i) in AML and how this triplet may be enhanced. Human AML cell lines were sensitive to ALX90 and its addition increased efficacy of a VEN plus azacitidin (VEN+AZA) regimen in vivo. However, CD47i failed to clear bone marrow tumor burden in PDX models. We hypothesized that the loss of resident macrophages in the bone marrow in AML reduced efficiency of CD47i. Therefore, we attempted to enhance this medullary macrophage population with agonism of TLR3 via polyinosinic:polycytidylic acid (poly(I:C)), which led to expansion and activation of medullary macrophages in in vivo AML PDX models and potentiated CD47i. In summary, the addition of poly(I:C) can enhance medullary macrophage populations to potentiate the phagocytosis merited by therapeutic inhibition of CD47.
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MESH Headings
- CD47 Antigen/metabolism
- CD47 Antigen/antagonists & inhibitors
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Humans
- Animals
- Mice
- Bridged Bicyclo Compounds, Heterocyclic/pharmacology
- Bridged Bicyclo Compounds, Heterocyclic/therapeutic use
- Xenograft Model Antitumor Assays
- Cell Line, Tumor
- Macrophages/metabolism
- Macrophages/drug effects
- Sulfonamides/pharmacology
- Receptors, Immunologic/metabolism
- Receptors, Immunologic/antagonists & inhibitors
- Antigens, Differentiation/metabolism
- Phagocytosis/drug effects
- Poly I-C/pharmacology
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Affiliation(s)
- Haley E Ramsey
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN; Program in Cancer Biology
| | - Agnieszka E Gorska
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Brianna N Smith
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Andrew J Monteith
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Londa Fuller
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Maria P Arrate
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Michael R Savona
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN; Center for Immunobiology; Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN.
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6
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Wu Y, Wang L, Li Y, Cao Y, Wang M, Deng Z, Kang H. Immunotherapy in the context of sepsis-induced immunological dysregulation. Front Immunol 2024; 15:1391395. [PMID: 38835773 PMCID: PMC11148279 DOI: 10.3389/fimmu.2024.1391395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/06/2024] [Indexed: 06/06/2024] Open
Abstract
Sepsis is a clinical syndrome caused by uncontrollable immune dysregulation triggered by pathogen infection, characterized by high incidence, mortality rates, and disease burden. Current treatments primarily focus on symptomatic relief, lacking specific therapeutic interventions. The core mechanism of sepsis is believed to be an imbalance in the host's immune response, characterized by early excessive inflammation followed by late immune suppression, triggered by pathogen invasion. This suggests that we can develop immunotherapeutic treatment strategies by targeting and modulating the components and immunological functions of the host's innate and adaptive immune systems. Therefore, this paper reviews the mechanisms of immune dysregulation in sepsis and, based on this foundation, discusses the current state of immunotherapy applications in sepsis animal models and clinical trials.
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Affiliation(s)
- Yiqi Wu
- Department of Critical Care Medicine, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Graduate School of The People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Lu Wang
- Department of Critical Care Medicine, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Graduate School of The People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Yun Li
- Department of Critical Care Medicine, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Graduate School of The People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Yuan Cao
- Department of Emergency Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Min Wang
- Department of Critical Care Medicine, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Graduate School of The People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Zihui Deng
- Department of Basic Medicine, Graduate School, Chinese PLA General Hospital, Beijing, China
| | - Hongjun Kang
- Department of Critical Care Medicine, The First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
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7
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Oliveira L, Silva MC, Gomes AP, Santos RF, Cardoso MS, Nóvoa A, Luche H, Cavadas B, Amorim I, Gärtner F, Malissen B, Mallo M, Carmo AM. CD5L as a promising biological therapeutic for treating sepsis. Nat Commun 2024; 15:4119. [PMID: 38750020 PMCID: PMC11096381 DOI: 10.1038/s41467-024-48360-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/29/2024] [Indexed: 05/18/2024] Open
Abstract
Sepsis results from systemic, dysregulated inflammatory responses to infection, culminating in multiple organ failure. Here, we demonstrate the utility of CD5L for treating experimental sepsis caused by cecal ligation and puncture (CLP). We show that CD5L's important features include its ability to enhance neutrophil recruitment and activation by increasing circulating levels of CXCL1, and to promote neutrophil phagocytosis. CD5L-deficient mice exhibit impaired neutrophil recruitment and compromised bacterial control, rendering them susceptible to attenuated CLP. CD5L-/- peritoneal cells from mice subjected to medium-grade CLP exhibit a heightened pro-inflammatory transcriptional profile, reflecting a loss of control of the immune response to the infection. Intravenous administration of recombinant CD5L (rCD5L) in immunocompetent C57BL/6 wild-type (WT) mice significantly ameliorates measures of disease in the setting of high-grade CLP-induced sepsis. Furthermore, rCD5L lowers endotoxin and damage-associated molecular pattern (DAMP) levels, and protects WT mice from LPS-induced endotoxic shock. These findings warrant the investigation of rCD5L as a possible treatment for sepsis in humans.
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Affiliation(s)
- Liliana Oliveira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - M Carolina Silva
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
- Universidade de Aveiro, Aveiro, Portugal
| | - Ana P Gomes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Rita F Santos
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
- ESS, Politécnico do Porto, Porto, Portugal
| | - Marcos S Cardoso
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
- ESS, Politécnico do Porto, Porto, Portugal
| | - Ana Nóvoa
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Hervé Luche
- Centre d'Immunophénomique (CIPHE), Aix Marseille Université, INSERM, CNRS, 13288, Marseille, France
| | - Bruno Cavadas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Irina Amorim
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- IPATIMUP - Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Fátima Gärtner
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- IPATIMUP - Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Bernard Malissen
- Centre d'Immunophénomique (CIPHE), Aix Marseille Université, INSERM, CNRS, 13288, Marseille, France
| | - Moisés Mallo
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Alexandre M Carmo
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
- IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal.
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8
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Yang Z, Kao X, Huang N, Yuan K, Chen J, He M. Identification and Analysis of PANoptosis-Related Genes in Sepsis-Induced Lung Injury by Bioinformatics and Experimental Verification. J Inflamm Res 2024; 17:1941-1956. [PMID: 38562657 PMCID: PMC10984196 DOI: 10.2147/jir.s452608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/20/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose Sepsis-induced lung injury (SLI) is a serious complication of sepsis. PANoptosis, a novel form of inflammatory programmed cell death that is not yet to be fully investigated in SLI. Our research aims to screen and validate the signature genes of PANoptosis in SLI by bioinformatics and in vivo experiment. Methods SLI-related datasets were downloaded from NCBI Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) of SLI were identified and intersected with the PANoptosis gene set to obtain DEGs related to PANoptosis (SPAN_DEGs). Then, Protein-Protein Interaction (PPI) network and functional enrichment analysis were conducted based on SPAN_DEGs. SVM-REF, LASSO and RandomForest three algorithms were combined to identify the signature genes. The Nomogram and ROC curves were performed to predict diagnostic value. Immune infiltration analysis, correlation analysis and differential expression analysis were used to explore the immunological characterization, correlation and expression levels of the signature genes. Finally, H&E staining and qRT-PCR were conducted for further verification in vivo experiment. Results Twenty-four SPAN_DEGs were identified by intersecting 675 DEGs with the 277 PANoptosis genes. Four signature genes (CD14, GSDMD, IL1β, and FAS) were identified by three machine learning algorithms, which were highly expressed in the SLI group, and had high diagnostic value in the diagnostic model. Moreover, immune infiltration analysis showed that most immune cells and immune-related functions were higher in the SLI group than those in the control group and were closely associated with the signature genes. Finally, it was confirmed that the cecum ligation and puncture (CLP) group mice showed significant pathological damage in lung tissues, and the mRNA expression levels of CD14, IL1β, and FAS were significantly higher than the sham group. Conclusion CD14, FAS, and IL1β may be the signature genes in PANoptosis to drive the progression of SLI and involved in regulating immune processes.
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Affiliation(s)
- Zhen Yang
- The Eighth School of Clinical Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
| | - Xingyu Kao
- The Eighth School of Clinical Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
| | - Na Huang
- The Eighth School of Clinical Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
| | - Kang Yuan
- Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
| | - Jingli Chen
- Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
| | - Mingfeng He
- Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong Province, People’s Republic of China
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9
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Chen L, Tang Z, Fu L, Xie Y, Xu J, Xia H, Xia T, Wang M. The Critical Role of Pyroptosis in Peri-Implantitis. J Inflamm Res 2024; 17:1621-1642. [PMID: 38495343 PMCID: PMC10944294 DOI: 10.2147/jir.s450706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 03/05/2024] [Indexed: 03/19/2024] Open
Abstract
Background Peri-implantitis (PI) is a prevalent complication of implant treatment. Pyroptosis, a distinctive inflammatory programmed cell death, is crucial to the pathophysiology of PI. Despite its importance, the pyroptosis-related genes (PRGs) influencing PI's progression remain largely unexplored. Methods This study conducted histological staining and transcriptome analyze from three datasets. The intersection of differentially expressed genes (DEGs) and PRGs was identified as pyroptosis-related differentially expressed genes (PRDEGs). Functional enrichment analyses were conducted to shed light on potential underlying mechanisms. Weighted Gene Co-expression Network Analysis (WGCNA) and a pyroptotic macrophage model were utilized to identify and validate hub PRDEGs. Immune cell infiltration in PI and its relationship with hub PRDEGs were also examined. Furthermore, consensus clustering was performed to identify new PI subtypes. Protein-protein interaction (PPI) network, competing endogenous RNA (ceRNA) network, mRNA-mRNA binding protein regulatory (RBP) network, and mRNA-drugs regulatory network of hub PRDEGs were also analyzed. Results Eight hub PRDEGs were identified: PGF, DPEP1, IL36B, IFIH1, TCEA3, RIPK3, NET7, and TLR3, which are instrumental in the PI's progression. Two PI subtypes were distinguished, with Cluster 1 exhibiting higher immune cell activation. The exploration of regulatory networks provided novel mechanisms and therapeutic targets in PI. Conclusion Our research highlights the critical role of pyroptosis and identifies eight hub PRDEGs in PI's progression, offering insights into novel immunotherapy targets and laying the foundation for advanced diagnostic and treatment strategies. This contributes to our understanding of PI and underscores the potential for personalized clinical management.
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Affiliation(s)
- Liangwen Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
- Center for Prosthodontics and Implant Dentistry, Optics Valley Branch, School and Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Ziqiao Tang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Liangliang Fu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Yang Xie
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Junyi Xu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Haibin Xia
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
- Department of Oral Implantology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Ting Xia
- Department of Oral Implantology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Min Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
- Department of Oral Implantology, School & Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
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10
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Jiang Y, Yu W, Hu T, Peng H, Hu F, Yuan Y, Liu X, Lai S, Zhou J, Dong X. Unveiling macrophage diversity in myocardial ischemia-reperfusion injury: identification of a distinct lipid-associated macrophage subset. Front Immunol 2024; 15:1335333. [PMID: 38449872 PMCID: PMC10915075 DOI: 10.3389/fimmu.2024.1335333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/30/2024] [Indexed: 03/08/2024] Open
Abstract
Background and objective Macrophages play a crucial and dichotomous role cardiac repair following myocardial ischemia-reperfusion, as they can both facilitate tissue healing and contribute to injury. This duality is intricately linked to environmental factors, and the identification of macrophage subtypes within the context of myocardial ischemia-reperfusion injury (MIRI) may offer insights for the development of more precise intervention strategies. Methods Specific marker genes were used to identify macrophage subtypes in GSE227088 (mouse single-cell RNA sequencing dataset). Genome Set Enrichment Analysis (GSEA) was further employed to validate the identified LAM subtypes. Trajectory analysis and single-cell regulatory network inference were executed using the R packages Monocle2 and SCENIC, respectively. The conservation of LAM was verified using human ischemic cardiomyopathy heart failure samples from the GSE145154 (human single-cell RNA sequencing dataset). Fluorescent homologous double-labeling experiments were performed to determine the spatial localization of LAM-tagged gene expression in the MIRI mouse model. Results In this study, single-cell RNA sequencing (scRNA-seq) was employed to investigate the cellular landscape in ischemia-reperfusion injury (IRI). Macrophage subtypes, including a novel Lipid-Associated Macrophage (LAM) subtype characterized by high expression of Spp1, Trem2, and other genes, were identified. Enrichment and Progeny pathway analyses highlighted the distinctive functional role of the SPP1+ LAM subtype, particularly in lipid metabolism and the regulation of the MAPK pathway. Pseudotime analysis revealed the dynamic differentiation of macrophage subtypes during IRI, with the activation of pro-inflammatory pathways in specific clusters. Transcription factor analysis using SCENIC identified key regulators associated with macrophage differentiation. Furthermore, validation in human samples confirmed the presence of SPP1+ LAM. Co-staining experiments provided definitive evidence of LAM marker expression in the infarct zone. These findings shed light on the role of LAM in IRI and its potential as a therapeutic target. Conclusion In conclusion, the study identifies SPP1+ LAM macrophages in ischemia-reperfusion injury and highlights their potential in cardiac remodeling.
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Affiliation(s)
- Ying Jiang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Wenpeng Yu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Tie Hu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Hanzhi Peng
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Fajia Hu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Yong Yuan
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Xufeng Liu
- Department of Haematology, Ganzhou People's Hospital, Ganzhou, China
| | - Songqing Lai
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Jianliang Zhou
- Department of Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiao Dong
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
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11
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Wu Y, Caldwell B, Wang J, Zhang Y, Li L. Alleviation of monocyte exhaustion by BCG derivative mycolic acid. iScience 2024; 27:108978. [PMID: 38323001 PMCID: PMC10845070 DOI: 10.1016/j.isci.2024.108978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 02/08/2024] Open
Abstract
Monocyte exhaustion with sustained pathogenic inflammation and immune-suppression, a hallmark of sepsis resulting from systemic infections, presents a challenge with limited therapeutic solutions. This study identified Methoxy-Mycolic Acid (M-MA), a branched mycolic acid derived from Mycobacterium bovis Bacillus Calmette-Guérin (BCG), as a potent agent in alleviating monocyte exhaustion and restoring immune homeostasis. Co-treatment of monocytes with M-MA effectively blocked the expansion of Ly6Chi/CD38hi/PD-L1hi monocytes induced by LPS challenges and restored the expression of immune-enhancing CD86. M-MA treatment restored mitochondrial functions of exhausted monocytes and alleviated their suppressive activities on co-cultured T cells. Independent of TREM2, M-MA blocks Src-STAT1-mediated inflammatory polarization and reduces the production of immune suppressors TAX1BP1 and PLAC8. Whole genome methylation analyses revealed M-MA's ability to erase the methylation memory of exhausted monocytes, particularly restoring Plac8 methylation. Together, our data suggest M-MA as an effective agent in restoring monocyte homeostasis with a therapeutic potential for treating sepsis.
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Affiliation(s)
- Yajun Wu
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Blake Caldwell
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Jing Wang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
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12
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Nie X, Deng W, Zhou H, Wang Z. Long noncoding RNA MCM3AP-AS1 attenuates sepsis-induced cardiomyopathy by improving inflammation, oxidative stress, and mitochondrial function through mediating the miR-501-3p/CADM1/STAT3 axis. Int Immunopharmacol 2024; 128:111500. [PMID: 38237222 DOI: 10.1016/j.intimp.2024.111500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 12/17/2023] [Accepted: 01/03/2024] [Indexed: 02/08/2024]
Abstract
Oxidative stress and inflammation are highly important for sepsis-mediated myocardial damage. The long noncoding RNA (lncRNA) MCM3AP-AS1 is involved in inflammatory diseases, but its function in acute myocardial injury during sepsis has not been fully elucidated. LPS and cecal ligation and puncture (CLP) were used to construct in vitro and in vivo sepsis-induced myocardial damage models, respectively. qRT-PCR was used to evaluate alterations in MCM3AP-AS1 and miR-501-3p alterations. After the MCM3AP-AS1 and miR-501-3p knockdown or overexpression models were established, the viability, apoptosis, inflammation, oxidative stress, and mitochondrial function of the myocardial cells were examined. Dual luciferase activity assay, RNA immunoprecipitation, and fluorescence in situ hybridization (FISH) confirmed the correlation among MCM3AP-AS1, miR-501-3p, and CADM1. Previous studies revealed that MCM3AP-AS1 was downregulated in sepsis patients, myocardial cells treated with LPS, and in the CLP mouse sepsis model, whereas miR-501-3p expression was increased. MCM3AP-AS1 overexpression hampered myocardial damage mediated by LPS and abated inflammation, oxidative stress, and mitochondrial dysfunction in myocardial cells and THP-1 cells. In contrast, MCM3AP-AS1 knockdown or miR-501-3p overexpression promoted all the effects of LPS. In vivo, MCM3AP-AS1 overexpression increased the survival rate of CLP mice; ameliorated myocardial injury; decreased the levels of TNF-α, IL-1β, IL-6, iNOS, COX2, ICAM1, VCAM1, PGE2, and MDA; and increased the levels of SOD, GSH-PX, Nrf2, and HO-1. Mechanistic studies demonstrated that MCM3AP-AS1 acted as a competitive endogenous RNA to repress miR-501-3p, enhance CADM1 expression, and dampen STAT3/nuclear factor-kappaB (NF-κB) activation. MCM3AP-AS1 suppresses myocardial injury elicited by sepsis by mediating the miR-501-3p/CADM1/STAT3/NF-κB axis.
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Affiliation(s)
- Xiangbi Nie
- Department of Emergency, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, NanChang 330006, Jiangxi, China
| | - Wu Deng
- Department of Emergency, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, NanChang 330006, Jiangxi, China
| | - Han Zhou
- Department of Emergency, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, NanChang 330006, Jiangxi, China
| | - Zenggeng Wang
- Department of Emergency, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, NanChang 330006, Jiangxi, China.
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Chen L, Meng J, Zheng J, Zhao T, Li Q, Lu C. Role of CCRL2 in the Pathogenesis of Experimental Autoimmune Myocarditis via P21-Activated Kinase 1/NOD-Like Receptor Protein 3 Pathway. Int Heart J 2024; 65:339-348. [PMID: 38556341 DOI: 10.1536/ihj.23-527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Myocarditis, a severe inflammatory disease, is becoming a worldwide public health concern. This study aims to elucidate the effect of Chemokine (C C motif) receptor-like 2 (CCRL2) in experimental autoimmune myocarditis (EAM) occurrence and its potential regulatory mechanisms.EAM was simulated in a mouse model injected with α-myosin-heavy chain. The changes on EAM were assessed through histological staining of heart tissues, including measuring cardiac troponin I (cTnI), proinflammatory cytokines, transferase-mediated dUTP nick end labeling (TUNEL) assay, and cardiac function. Then, the heart tissues from the EAM mouse model and control groups were analyzed through transcriptome sequencing to identify the differential expressed genes (DEGs) and hub genes related to pyroptosis. Downregulation of CCRL2 further verified the function of CCRL2 on EAM and p21-activated kinase 1/NOD-like receptor protein 3 (PAK/NLRP3) signaling pathways in vivo.The EAM model was constructed successfully, with the heart weight/body weight ratio, serum level of cTnI, and concentrations of proinflammatory cytokines elevation. Moreover, cell apoptosis was also significantly increased. Transcriptome sequencing revealed 696 and 120 upregulated and downregulated DEGs, respectively. After functional enrichment, CCRL2 was selected as a potential target. Then, we verified that CCRL2 knockdown improved cardiac function, alleviated EAM occurrence, and reduced PAK/NLRP3 protein expression.CCRL2 may act as a novel potential treatment target in EAM by regulating the PAK1/NLRP3 pathway.
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Affiliation(s)
- Lin Chen
- The First Central Clinical School, Tianjin Medical University
- Department of Cardiology, The People's Hospital of Rizhao
| | - Jing Meng
- Department of Cardiology, The People's Hospital of Rizhao
| | - Jia Zheng
- Department of Cardiology, Tianjin First Center Hospital
| | - Tingting Zhao
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University
| | - Qi Li
- School of Medicine, Nankai University
| | - Chengzhi Lu
- Department of Cardiology, Tianjin First Center Hospital
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Chaterjee O, Sur D. Artificially induced in situ macrophage polarization: An emerging cellular therapy for immuno-inflammatory diseases. Eur J Pharmacol 2023; 957:176006. [PMID: 37611840 DOI: 10.1016/j.ejphar.2023.176006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 08/10/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023]
Abstract
Macrophages are the mature form of monocytes that have high plasticity and can shift from one phenotype to another by the process of macrophage polarization. Macrophage has several vital pharmacological tasks like eliminating microorganism invasion, clearing dead cells, causing inflammation, repairing damaged tissues, etc. The function of macrophages is based on their phenotype. M1 macrophages are mostly responsible for the body's immune responses and M2 macrophages have healing properties. Inappropriate activation of any one of the phenotypes often leads to ROS-induced tissue damage and affects wound healing and angiogenesis. Therefore, maintaining tissue macrophage homeostasis is necessary. Studies are being done to find techniques for macrophage polarization. But, the process of macrophage polarization is very complex as it involves multiple signalling pathways involving innate immunity. Thus, identifying the right pathways for macrophage polarization is essential to apply the polarizing technique for the treatment of various inflammatory diseases where macrophage physiology influences the disease pathology. In this review, we highlighted the various techniques so far used to change macrophage plasticity. We believe that soon macrophage targeting therapeutics will hit the market for the management of inflammatory disease. Hence this review will help macrophage researchers choose suitable methods and materials/agents to polarize macrophages artificially in various disease models.
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Affiliation(s)
- Oishani Chaterjee
- Division of Pharmacology, Guru Nanak Institute of Pharmaceutical Science & Technology, Panihati, Kolkata, 700114, India
| | - Debjeet Sur
- Division of Pharmacology, Guru Nanak Institute of Pharmaceutical Science & Technology, Panihati, Kolkata, 700114, India.
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Li Y, Dong X, He W, Quan H, Chen K, Cen C, Wei W. Ube2L6 Promotes M1 Macrophage Polarization in High-Fat Diet-Fed Obese Mice via ISGylation of STAT1 to Trigger STAT1 Activation. Obes Facts 2023; 17:24-36. [PMID: 37820603 PMCID: PMC10836867 DOI: 10.1159/000533966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/31/2023] [Indexed: 10/13/2023] Open
Abstract
INTRODUCTION In obesity-related type 2 diabetes mellitus (T2DM), M1 macrophages aggravate chronic inflammation and insulin resistance. ISG15-conjugation enzyme E2L6 (Ube2L6) has been demonstrated as a promoter of obesity and insulin resistance. This study investigated the function and mechanism of Ube2L6 in M1 macrophage polarization in obesity. METHODS Obesity was induced in Ube2L6AKO mice and age-matched Ube2L6flox/flox control mice by high-fat diet (HFD). Stromal vascular cells were isolated from the epididymal white adipose tissue of mice. Polarization induction was performed in mouse bone marrow-derived macrophages (BMDMs) by exposure to IFN-γ, lipopolysaccharide, or IL-4. F4/80 expression was assessed by immunohistochemistry staining. Expressions of M1/M2 macrophage markers and target molecules were determined by flow cytometry, RT-qPCR, and Western blotting, respectively. Protein interaction was validated by co-immunoprecipitation (Co-IP) assay. The release of TNF-α and IL-10 was detected by ELISA. RESULTS The polarization of pro-inflammatory M1 macrophages together with an increase in macrophage infiltration was observed in HFD-fed mice, which could be restrained by Ube2L6 knockdown. Additionally, Ube2L6 deficiency triggered the repolarization of BMDMs from M1 to M2 phenotypes. Mechanistically, Ube2L6 promoted the expression and activation of signal transducer and activator of transcription 1 (STAT1) through interferon-stimulated gene 15 (ISG15)-mediated ISGlylation, resulting in M1 macrophage polarization. CONCLUSION Ube2L6 exerts as an activator of STAT1 via post-translational modification of STAT1 by ISG15, thereby triggering M1 macrophage polarization in HFD-fed obese mice. Overall, targeting Ube2L6 may represent an effective therapeutic strategy for ameliorating obesity-related T2DM.
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Affiliation(s)
- Yunqian Li
- Center of Gerontology and Geriatrics, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Xiao Dong
- Center of Gerontology and Geriatrics, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wenqian He
- Department of Endocrinology, Hainan Medical College, Haikou, China
| | - Huibiao Quan
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Kaining Chen
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Chaoping Cen
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Weiping Wei
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
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Zhu H, Xu J, Li K, Chen M, Wu Y, Zhang X, Chen H, Chen D. DOCK8 inhibits the immune function of neutrophils in sepsis by regulating aerobic glycolysis. Immun Inflamm Dis 2023; 11:e965. [PMID: 37647440 PMCID: PMC10461417 DOI: 10.1002/iid3.965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/05/2023] [Accepted: 07/20/2023] [Indexed: 09/01/2023] Open
Abstract
INTRODUCTION This study endeavored to investigate the role of DOCK8 in modulating the immune function triggered by sepsis. METHODS Expression of DOCK8 in the whole blood of sepsis patients and its enrichment pathways were assayed by bioinformatics. Pearson analysis was used to predict the relationship between glycolytic signaling pathway and its relevance to neutrophil function in sepsis. A sepsis mouse model was then built by performing cecal ligation and puncture treatment on male mice. Neutrophils were isolated, and their purity was tested by flow cytometry. Neutrophils were then stimulated by lipopolysaccharide to build a sepsis cell model. Next, quantitative reverse transcription polymerase chain reaction and CCK-8 were applied to test the expression of DOCK8 and cell viability, western blot to assay the expression of HK-2, PKM2, and LDHA proteins, ELISA to measure the concentrations of TNF-α, IL-1β, and IL-6, Transwell to detect the chemotaxis of neutrophils and flow cytometry to detect the phagocytic activity of neutrophils. Finally, in different treatment groups, we used Seahorse XF 96 to analyze the extracellular acidification rate (ECAR) of sepsis cells and used enzyme-linked immunosorbent assay to detect the contents of pyruvic acid, lactic acid, and ATP in sepsis cells. RESULTS DOCK8 was downregulated in sepsis blood and activated neutrophils. Aerobic glycolysis was positively correlated with sepsis. Activated neutrophils promoted the expression of inflammatory factors TNF-α, IL-1β, and IL-6. Low expression of DOCK8 facilitated the proliferation, chemotaxis, and phagocytic activity of sepsis cells and promoted the expression of inflammatory factors. Bioinformatics analysis revealed that DOCK8 was enriched in the glycolytic signaling pathway. Low expression of DOCK8 induced ECAR, promoted the protein expression of HK-2, PKM2 and LDHA, and favored the increase of pyruvate, lactate, and ATP contents. While 2-DG treatment could restore these effects. CONCLUSION DOCK8 may inhibit sepsis-induced neutrophil immune function by regulating aerobic glycolysis and causing excessive inflammation, which helps to explore potential therapeutic targets.
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Affiliation(s)
- Hongjun Zhu
- Clinical Laboratory, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Junlong Xu
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Ke Li
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Miaomiao Chen
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Yueming Wu
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Xian Zhang
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Hua Chen
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
| | - Deyuan Chen
- Department of Critical Care Medicine, The Sixth Affiliated Hospital of Wenzhou Medical UniversityLishui People's HospitalLishui CityChina
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Zhao X, Jiang Y, Luo S, Zhao Y, Zhao H. Intercellular communication involving macrophages at the maternal-fetal interface may be a pivotal mechanism of URSA: a novel discovery from transcriptomic data. Front Endocrinol (Lausanne) 2023; 14:973930. [PMID: 37265689 PMCID: PMC10231036 DOI: 10.3389/fendo.2023.973930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 05/04/2023] [Indexed: 06/03/2023] Open
Abstract
Unexplained recurrent spontaneous abortion (URSA) is a severe challenge to reproductive females worldwide, and its etiology and pathogenesis have not yet been fully clarified. Abnormal intercellular communication between macrophages (Mφ) and decidual stromal cells (DSCs) or trophoblasts has been supposed to be the key to URSA. However, the exact molecular mechanisms in the crosstalk are not yet well understood. This study aimed to explore the potential molecule mechanism that may be involved in the communication between Mφ and DSC or trophoblast cells and determine their diagnostic characteristics by using the integrated research strategy of bioinformatics analysis, machine learning and experiments. First, microarrays of decidual tissue (GSE26787, GSE165004) and placenta tissue (GSE22490) in patients with URSA, as well as microarrays involving induced decidualization (GSE94644) and macrophage polarization in vitro (GSE30595) were derived from the gene expression omnibus (GEO) database. And 721 decidua-differentially expressed genes (DEGs), 613 placenta-DEGs, 510 Mφ polarization DEGs were obtained in URSA by differential expression analysis. Then, the protein-protein interaction (PPI) network was constructed, and the hub genes were identified by CytoHubba in Cytoscape software and validated by real-time PCR assay. Subsequently, immune enrichment analysis on decidua-DEGs and placenta-DEGs by ClueGO verified their regulation effects on Mφ. Besides, functional enrichment analysis was performed on Mφ polarization DEGs and the essential module genes derived from the weighted gene co-expression network analysis (WGCNA) to uncover the biological function that were related to abnormal polarization of Mφ. Furthermore, we screened out 29, 43 and 22 secreted protein-encoding genes from DSC-DEGs, placenta-DEGs and Mφ polarization DEGs, respectively. Besides, the hub secreted-protein-encoding genes were screened by CytoHubba. Moreover, we conducted functional enrichment analysis on these genes. And spearman correlation analysis between hub secreted-protein-encoding genes from donor cells and hub genes in recipient cells was performed to further understand the molecular mechanism of intercellular communication further. Moreover, signature genes with diagnostic value were screened from secreted protein-encoding genes by machine learning and validated by immunofluorescence co-localization analysis with clinical samples. Finally, three biomarkers of DSCs (FGF9, IL1R2, NID2) and three biomarkers of Mφ (CFB, NID2, CXCL11) were obtained. In conclusion, this project provides new ideas for understanding the mechanism regulatory network of intercellular communication involving macrophages at the maternal-fetal interface of URSA. Also, it provides innovative insights for the diagnosis and treatment of URSA.
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Affiliation(s)
- Xiaoxuan Zhao
- Department of Traditional Chinese Medicine (TCM) Gynecology, Hangzhou Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuepeng Jiang
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shiling Luo
- Department of Traditional Chinese Medicine (TCM) Gynecology, Hangzhou Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Hangzhou, China
| | - Yang Zhao
- The First Clinical Medical College of Nanjing University of Chinese Medicine, Nanjing, China
| | - Hongli Zhao
- Department of Traditional Chinese Medicine (TCM) Gynecology, Hangzhou Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Hangzhou, China
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