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Xia L, Jiang JH, Liu JY, Zhang TY, Dong YX, Liu QH, Chai YF, Liu YC, Shou ST. H-151 attenuates lipopolysaccharide-induced acute kidney injury by inhibiting the STING-TBK1 pathway. Ren Fail 2024; 46:2363591. [PMID: 38856314 PMCID: PMC11168233 DOI: 10.1080/0886022x.2024.2363591] [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: 12/21/2023] [Accepted: 05/30/2024] [Indexed: 06/11/2024] Open
Abstract
Sepsis is a severe systemic infectious disease that often leads to multi-organ dysfunction. One of the common and serious complications of sepsis is renal injury. In this study, we aimed to investigate the potential mechanistic role of a novel compound called H-151 in septic kidney injury. We also examined its impact on renal function and mouse survival rates. Initially, we confirmed abnormal activation of the STING-TBK1 signaling pathway in the kidneys of septic mice. Subsequently, we treated the mice with H-151 and observed significant improvement in sepsis-induced renal dysfunction. This was evidenced by reductions in blood creatinine and urea nitrogen levels, as well as a marked decrease in inflammatory cytokine levels. Furthermore, H-151 substantially improved the seven-day survival rate of septic mice, indicating its therapeutic potential. Importantly, H-151 also exhibited an inhibitory effect on renal apoptosis levels, further highlighting its mechanism of protecting against septic kidney injury. These study findings not only offer new insights into the treatment of septic renal injury but also provide crucial clues for further investigations into the regulatory mechanisms of the STING-TBK1 signaling pathway and potential drug targets.
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Affiliation(s)
- Lei Xia
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Jia-hui Jiang
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Jie-yu Liu
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Tian-yi Zhang
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Yu-xin Dong
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Qi-hui Liu
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Yan-Fen Chai
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Yan-cun Liu
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
| | - Song-tao Shou
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, China
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Huang B, Lin G, Chen F, Yang W, Zhang C, Yao Y, Zeng Q, Yang Y, Huang J. UCP2 knockout exacerbates sepsis-induced intestinal injury by promoting NLRP3-mediated pyroptosis. Int Immunopharmacol 2024; 141:112935. [PMID: 39159561 DOI: 10.1016/j.intimp.2024.112935] [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: 07/05/2024] [Revised: 07/05/2024] [Accepted: 08/12/2024] [Indexed: 08/21/2024]
Abstract
Sepsis-induced intestinal injury is a common complication that increases the morbidity and mortality associated with sepsis. UCP2, a mitochondrial membrane protein, is involved in numerous cellular processes, including metabolism, inflammation, and pyroptosis. According to our previous studies, UCP2 expression increases in septic intestinal tissue. However, its function in intestinal damage is not known. This work investigated UCP2's role in intestinal injury caused by sepsis. A sepsis mouse model was established in wild-type and UCP2-knockout (UCP2-KO) animals using cecal ligation and puncture (CLP). MCC950, an NLRP3 inflammasome inhibitor, was injected intraperitoneally 3 h before CLP surgery. Overall, significantly higher levels of UCP2 were observed in the intestines of septic mice. UCP2-KO mice subjected to CLP exhibited exacerbated intestinal damage, characterized by enhanced mucosal erosion, inflammatory cell infiltration, and increased intestinal permeability. Furthermore, UCP2 knockout significantly increased oxidative stress, inflammation, and pyroptosis in the CLP mouse intestines. Interestingly, MCC950 not only inhibited pyroptosis but also reversed inflammation, oxidative stress as well as damage to intestinal tissues as a result of UCP2 knockout. Our results highlighted the protective functions of UCP2 in sepsis-associated intestinal injury through modulation of inflammation and oxidative stress via NLRP3 inflammasome-induced pyroptosis.
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Affiliation(s)
- Bolun Huang
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China
| | - Gangxi Lin
- The School of Clinical Medicine, Fujian Medical University, Fuzhou 350007, China; Department of Pediatrics, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, China
| | - Feiyan Chen
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China
| | - Wenmin Yang
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China
| | - Chunmin Zhang
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China
| | - Yu Yao
- Department of Otolaryngology Head & Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Qiyi Zeng
- Department of Pediatrics, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yiyu Yang
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China.
| | - Jinda Huang
- Department of Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China.
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Bushra, Ahmed SI, Begum S, Maaria, Habeeb MS, Jameel T, Khan AA. Molecular basis of sepsis: A New insight into the role of mitochondrial DNA as a damage-associated molecular pattern. Mitochondrion 2024; 79:101967. [PMID: 39343040 DOI: 10.1016/j.mito.2024.101967] [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: 05/09/2024] [Revised: 09/05/2024] [Accepted: 09/18/2024] [Indexed: 10/01/2024]
Abstract
Sepsis remains a critical challenge in the field of medicine, claiming countless lives each year. Despite significant advances in medical science, the molecular mechanisms underlying sepsis pathogenesis remain elusive. Understanding molecular sequelae is gaining deeper insights into the roles played by various damage-associated molecular patterns (DAMPs) and pathogen-associated molecular patterns (PAMPs) in disease pathogenesis. Among the known DAMPs, circulating cell-free mitochondrial DNA (mtDNA) garners increasing attention as a key player in the immune response during sepsis and other diseases. Mounting evidence highlights numerous connections between circulating cell-free mtDNA and inflammation, a pivotal state of sepsis, characterized by heightened inflammatory activity. In this review, we aim to provide an overview of the molecular basis of sepsis, particularly emphasizing the role of circulating cell-free mtDNA as a DAMP. We discuss the mechanisms of mtDNA release, its interaction with pattern recognition receptors (PRRs), and the subsequent immunological responses that contribute to sepsis progression. Furthermore, we discuss the forms of cell-free mtDNA; detection techniques of circulating cell-free mtDNA in various biological fluids; and the diagnostic, prognostic, and therapeutic implications offering insights into the potential for innovative interventions in sepsis management.
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Affiliation(s)
- Bushra
- Central Laboratory for Stem Cell Research and Translational Medicine, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Shaik Iqbal Ahmed
- Central Laboratory for Stem Cell Research and Translational Medicine, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Safia Begum
- Central Laboratory for Stem Cell Research and Translational Medicine, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Maaria
- Central Laboratory for Stem Cell Research and Translational Medicine, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Mohammed Safwaan Habeeb
- Department of Surgery, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Tahmeen Jameel
- Department of Biochemistry, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India
| | - Aleem Ahmed Khan
- Central Laboratory for Stem Cell Research and Translational Medicine, Deccan College of Medical Sciences, Hyderabad 500 058, Telangana, India.
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Hu D, Sheeja Prabhakaran H, Zhang YY, Luo G, He W, Liou YC. Mitochondrial dysfunction in sepsis: mechanisms and therapeutic perspectives. Crit Care 2024; 28:292. [PMID: 39227925 PMCID: PMC11373266 DOI: 10.1186/s13054-024-05069-w] [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: 05/14/2024] [Accepted: 08/17/2024] [Indexed: 09/05/2024] Open
Abstract
Sepsis is a severe medical condition characterized by a systemic inflammatory response, often culminating in multiple organ dysfunction and high mortality rates. In recent years, there has been a growing recognition of the pivotal role played by mitochondrial damage in driving the progression of sepsis. Various factors contribute to mitochondrial impairment during sepsis, encompassing mechanisms such as reactive nitrogen/oxygen species generation, mitophagy inhibition, mitochondrial dynamics change, and mitochondrial membrane permeabilization. Damaged mitochondria actively participate in shaping the inflammatory milieu by triggering key signaling pathways, including those mediated by Toll-like receptors, NOD-like receptors, and cyclic GMP-AMP synthase. Consequently, there has been a surge of interest in developing therapeutic strategies targeting mitochondria to mitigate septic pathogenesis. This review aims to delve into the intricate mechanisms underpinning mitochondrial dysfunction during sepsis and its significant impact on immune dysregulation. Moreover, we spotlight promising mitochondria-targeted interventions that have demonstrated therapeutic efficacy in preclinical sepsis models.
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Affiliation(s)
- Dongxue Hu
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Harshini Sheeja Prabhakaran
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Yuan-Yuan Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Gaoxing Luo
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China
| | - Weifeng He
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
- Chongqing Key Laboratory for Disease Proteomics, Chongqing, 400038, China.
| | - Yih-Cherng Liou
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore.
- Integrative Sciences and Engineering Programme, NUS Graduate School, National University of Singapore, Singapore, 119077, Singapore.
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Hao R, Zhao M, Tayyab M, Lin Z, Zhang Y. The mucosal immunity in crustaceans: Inferences from other species. FISH & SHELLFISH IMMUNOLOGY 2024; 152:109785. [PMID: 39053584 DOI: 10.1016/j.fsi.2024.109785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/10/2024] [Accepted: 07/20/2024] [Indexed: 07/27/2024]
Abstract
Crustaceans such as shrimps and crabs, hold significant ecological significance and substantial economic value within marine ecosystems. However, their susceptibility to disease outbreaks and pathogenic infections has posed major challenges to production in recent decades. As invertebrate, crustaceans primarily rely on their innate immune system for defense, lacking the adaptive immune system found in vertebrates. Mucosal immunity, acting as the frontline defense against a myriad of pathogenic microorganisms, is a crucial aspect of their immune repertoire. This review synthesizes insights from comparative immunology, highlighting parallels between mucosal immunity in vertebrates and innate immune mechanisms in invertebrates. Despite lacking classical adaptive immunity, invertebrates, including crustaceans, exhibit immune memory and rely on inherent "innate immunity factors" to combat invading pathogens. Drawing on parallels from mammalian and piscine systems, this paper meticulously explores the complex role of mucosal immunity in regulating immune responses in crustaceans. Through the extrapolation from well-studied models like mammals and fish, this review infers the potential mechanisms of mucosal immunity in crustaceans and provides insights for research on mucosal immunity in crustaceans.
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Affiliation(s)
- Ruixue Hao
- Guangdong Provincial Key Laboratory of Marine Biology and Department of Biology, Shantou University, Shantou, 515063, China
| | - Mingming Zhao
- Guangdong Provincial Key Laboratory of Marine Biology and Department of Biology, Shantou University, Shantou, 515063, China
| | - Muhammad Tayyab
- Guangdong Provincial Key Laboratory of Marine Biology and Department of Biology, Shantou University, Shantou, 515063, China
| | - Zhongyang Lin
- Guangdong Provincial Key Laboratory of Marine Biology and Department of Biology, Shantou University, Shantou, 515063, China.
| | - Yueling Zhang
- Guangdong Provincial Key Laboratory of Marine Biology and Department of Biology, Shantou University, Shantou, 515063, China.
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Shu T, Zhang J, Hu R, Zhou F, Li H, Liu J, Fan Y, Li X, Ding P. Qi Huang Fang improves intestinal barrier function and intestinal microbes in septic mice through NLRP3 inflammasome-mediated cellular pyroptosis. Transpl Immunol 2024; 85:102072. [PMID: 38857634 DOI: 10.1016/j.trim.2024.102072] [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: 12/08/2023] [Revised: 06/03/2024] [Accepted: 06/07/2024] [Indexed: 06/12/2024]
Abstract
OBJECTIVE Sepsis has a high incidence, morbidity, and mortality rate and is a great threat to human safety. Gut health plays an important role in sepsis development. Qi Huang Fang (QHF) contains astragalus, rhubarb, zhishi, and atractylodes. It is used to treat syndromes of obstructive qi and deficiency of righteousness. This study aimed to investigate whether QHF improves intestinal barrier function and microorganisms in mice through NLRP3 inflammatory vesicle-mediated cellular focal death. METHODS A mouse model of sepsis was constructed by cecal ligation and puncture (CLP) of specific pathogen-free (SPF)-grade C57BL/6 mice after continuous gavage of low, medium, and high doses of astragalus formula or probiotics for 4 weeks. Twenty-four hours postoperatively, the mechanism of action of QHF in alleviating septic intestinal dysfunction and restoring intestinal microecology, thereby alleviating intestinal injury, was evaluated by pathological observation, immunohistochemistry, western blotting, ELISA, and 16S rDNA high-throughput sequencing. RESULTS Different doses of QHF and probiotics ameliorated intestinal injury and reduced colonic apoptosis in mice to varying degrees (P < 0.05). Meanwhile, different doses of QHF and probiotics were able to reduce the serum levels of IL-6, IL-1β, and TNF-α (P < 0.05); down-regulate the protein expression of NLRP3, caspase-1, and caspase-11 (P < 0.05); and up-regulate the protein expression of zonula occluden-1 (ZO-1) and occludin (P < 0.05), which improved the intestinal barrier function in mice. In addition, QHF decreased the relative abundance of harmful bacteria (Firmicutes, Muribaculaceae, Campilobacterota, Helicobacter, and Alistipes) and increased the relative abundance of beneficial bacteria (Bacteroidetes and Actinobacteria) (P < 0.05). CONCLUSION QHF improves intestinal barrier function and gut microbiology in mice via NLRP3 inflammasome-mediated cellular pyroptosis.
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Affiliation(s)
- Tingting Shu
- Department of Intensive Care Unit, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Jun Zhang
- Department of Intensive Care Unit, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Ruiying Hu
- Department of Emergency Medicine, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Fang Zhou
- Department of Emergency Medicine, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Hanyong Li
- Department of Intensive Care Unit, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Jing Liu
- Department of Medical, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Yanbo Fan
- Department of Science and Education Section, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Xucheng Li
- Department of Emergency Medicine, Wuhan Hospital of Traditional Chinese Medicine, China
| | - Peiwu Ding
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
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Zhou Y, Bao L, Gong S, Dou G, Li Z, Wang Z, Yu L, Ding F, Liu H, Li X, Liu S, Yang X, Liu S. T Cell-Derived Apoptotic Extracellular Vesicles Hydrolyze cGAMP to Alleviate Radiation Enteritis via Surface Enzyme ENPP1. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401634. [PMID: 38888507 PMCID: PMC11336903 DOI: 10.1002/advs.202401634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/04/2024] [Indexed: 06/20/2024]
Abstract
Radiation enteritis is the most common complication of pelvic radiotherapy, but there is no effective prevention or treatment drug. Apoptotic T cells and their products play an important role in regulating inflammation and maintaining physiological immune homeostasis. Here it is shown that systemically infused T cell-derived apoptotic extracellular vesicles (ApoEVs) can target mice irradiated intestines and alleviate radiation enteritis. Mechanistically, radiation elevates the synthesis of intestinal 2'3' cyclic GMP-AMP (cGAMP) and activates cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) proinflammatory pathway. After systemic infusion of ApoEVs, the ectonucleotide pyrophosphatase phosphodiesterase 1 (ENPP1) enriches on the surface of ApoEVs hydrolyze extracellular cGAMP, resulting in inhibition of the cGAS-STING pathway activated by irradiation. Furthermore, after ApoEVs are phagocytosed by phagocytes, ENPP1 on ApoEVs hydrolyzed intracellular cGAMP, which serves as an intracellular cGAMP hydrolyzation mode, thereby alleviating radiation enteritis. The findings shed light on the intracellular and extracellular hydrolysis capacity of ApoEVs and their role in inflammation regulation.
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Affiliation(s)
- Yang Zhou
- College of Life SciencesNorthwest UniversityXi'anShaanxi710069China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Lili Bao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Shengkai Gong
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Geng Dou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Zihan Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Zhengyan Wang
- Department of OrthodonticsSchool and Hospital of StomatologyCheeloo College of MedicineShandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral DiseasesJinanShandong250012China
| | - Lu Yu
- Department of PeriodontologySchool and Hospital of StomatologyCheeloo College of MedicineShandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral DiseasesJinanShandong250012China
| | - Feng Ding
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesDepartment of RadiologySchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Huan Liu
- Department of Otolaryngology Head and Neck SurgeryPeking University Third HospitalBeijing100871China
| | - Xiayun Li
- College of Life SciencesNorthwest UniversityXi'anShaanxi710069China
| | - Siying Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi Clinical Research Center for Oral DiseasesDepartment of OrthodonticsSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
| | - Xiaoshan Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
- Stomatology HospitalSchool of StomatologySouthern Medical UniversityGuangzhouGuangdong510280China
| | - Shiyu Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyThe Fourth Military Medical UniversityXi'anShaanxi710032China
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Fu Y, Zhang S, Yue Q, An Z, Zhao M, Zhao C, Sun X, Li K, Li B, Zhao L, Su L. The preventative effects of Lactococcus Lactis metabolites against LPS-induced sepsis. Front Microbiol 2024; 15:1404652. [PMID: 39086654 PMCID: PMC11288810 DOI: 10.3389/fmicb.2024.1404652] [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: 03/21/2024] [Accepted: 06/25/2024] [Indexed: 08/02/2024] Open
Abstract
Introduction Sepsis is a syndrome of organ dysfunction caused by a dysregulated host response to infection and septic shock. Currently, antibiotic therapy is the standard treatment for sepsis, but it can lead to drug resistance. The disturbance of the gut microbiota which is affected by sepsis could lead to the development of organ failure. It is reported that probiotics could shape the gut microbiota, potentially controlling a variety of intestinal diseases and promoting whole-body health. Methods In this study, we evaluated the preventive effects of intra- and extracellular products of probiotics on sepsis. The extracellular products of Lactococcus lactis (L. lactis) were identified through the in vivo cell experiments. The preventive effect and mechanism of L. lactis extracellular products on mouse sepsis were further explored through HE staining, mouse survival rate measurement, chip analysis, etc. Results L. lactis extracellular products increase cell survival and significantly reduce inflammatory factors secreted in a cellular sepsis model. In in vivo experiments in mice, our samples attenuated sepsis-induced pulmonary edema and inflammatory infiltrates in the lungs of mice, and reduced mortality and inflammatory factor levels within the serum of mice. Finally, the mechanism of sepsis prevention by lactic acid bacteria is suggested. Extracellular products of L. lactis could effectively prevent sepsis episodes. Discussion In animal experiments, we reported that extracellular products of L. lactis can effectively prevent sepsis, and preliminarily discussed the pathological mechanism, which provides more ideas for the prevention of sepsis. In the future, probiotics may be considered a new way to prevent sepsis.
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Affiliation(s)
- Yue Fu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Song Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Qiulin Yue
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Zaiyong An
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Minghan Zhao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Chen Zhao
- Shandong Baoyuan Biotechnology Co., Ltd., Jinan, China
| | - Xin Sun
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Kunlun Li
- Shandong Chenzhang Biotechnology Co., Ltd., Jinan, China
| | - Baojun Li
- Shandong Baoyuan Biotechnology Co., Ltd., Jinan, China
| | - Lin Zhao
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- Shandong Chenzhang Biotechnology Co., Ltd., Jinan, China
| | - Le Su
- State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- Shandong Baoyuan Biotechnology Co., Ltd., Jinan, China
- Shengsheng Xiangrong Biotechnology (Shandong) Co., Ltd., Jinan, China
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Zhang Q, Liu Z, Huang X, Heng X, Wu J, Chen Z, Guo X, Fan J, Huang Q. MDIVI-1 ALLEVIATES SEPSIS-INDUCED LIVER INJURY BY INHIBITING STING SIGNALING ACTIVATION. Shock 2024; 62:95-102. [PMID: 38526162 DOI: 10.1097/shk.0000000000002349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
ABSTRACT Proinflammatory hyperactivation of Kupffer cells (KCs) is foremost involved in the pathogenesis of sepsis-induced liver injury. Our previous study found that stimulator of interferon genes (STING) signaling was activated in KCs in response of lipopolysaccharide (LPS) and knocking down dynamin-related protein 1 (DRP1) in KCs effectively inhibited the activation of STING signaling and the subsequent production of proinflammatory cytokines. In this study, we demonstrated that in vivo treatment with mitochondrial division inhibitor 1 (Mdivi-1), a selective inhibitor of DRP1, alleviated cecal ligation and puncture (CLP)-induced liver injury with the improvement of liver pathology and function. Moreover, we found that STING in liver was mainly concentrated in KCs and STING signaling was significantly activated in KCs after CLP. The STING deficiency effectively ameliorated liver injury and decreased the mortality of septic mice, which were reversely worsened by the enhanced activation of STING with DMXAA. The further study showed that Mdivi-1 markedly attenuated STING signaling activation in KCs and inhibited systemic inflammatory response. Importantly, DMXAA application in CLP mice blunted Mdivi-1's liver protection effect. Taken together, our study confirmed Mdivi-1 effectively alleviated CLP-induced liver injury partially through inhibiting STING signaling activation in KCs, which provides new insights and a novel potential pharmacological therapeutic target for treating septic liver injury.
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Affiliation(s)
| | - Zhuanhua Liu
- Guangdong Provincial Key Lab of Cardiac Function and Microcirculation, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiaoxia Huang
- Guangdong Provincial Key Lab of Cardiac Function and Microcirculation, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xin Heng
- Guangdong Provincial Key Lab of Cardiac Function and Microcirculation, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jie Wu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhenfeng Chen
- Guangdong Provincial Key Lab of Cardiac Function and Microcirculation, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiaohua Guo
- Guangdong Provincial Key Lab of Cardiac Function and Microcirculation, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jun Fan
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, China
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Wang J, Yao N, Chen Y, Li X, Jiang Z. Research progress of cGAS-STING signaling pathway in intestinal diseases. Int Immunopharmacol 2024; 135:112271. [PMID: 38762923 DOI: 10.1016/j.intimp.2024.112271] [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: 04/10/2024] [Revised: 05/05/2024] [Accepted: 05/13/2024] [Indexed: 05/21/2024]
Abstract
The cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) signal has drawn much consideration due to its sensitivity to DNA in innate immune mechanisms. Activation of the cGAS-STIN signaling pathway induces the production of interferon and inflammatory cytokines, resulting in immune responses, or inflammatory diseases. The intestinal tract is a vital organ for the body's nutrition absorption, recent studies have had various points of view on the job of cGAS-STING pathway in various intestinal sicknesses. Therefore, understanding its role and mechanism in the intestinal environment can help to develop new strategies for the treatment of intestinal diseases. This article examines the mechanism of the cGAS-STING pathway and its function in inflammatory bowel disease, intestinal cancer, and long-injury ischemia-reperfusion, lists the current medications that target it for the treatment of intestinal diseases, and discusses the impact of intestinal flora on this signaling pathway, to offer a theoretical and scientific foundation for upcoming targeted therapies for intestinal disorders via the cGAS-STING pathway.
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Affiliation(s)
- Jiamin Wang
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Yanji, Jilin 133002, China
| | - Naiqi Yao
- Department of Pharmacy, Yanbian University Hospital, Yanji, Jilin 133000, China
| | - Yonghu Chen
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Yanji, Jilin 133002, China
| | - Xuezheng Li
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Yanji, Jilin 133002, China; Department of Pharmacy, Yanbian University Hospital, Yanji, Jilin 133000, China
| | - Zhe Jiang
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Yanji, Jilin 133002, China; Department of Pharmacy, Yanbian University Hospital, Yanji, Jilin 133000, China.
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11
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Zhu X, Yu G, Lv Y, Yang N, Zhao Y, Li F, Zhao J, Chen Z, Lai Y, Chen L, Wang X, Xiao J, Cai Y, Feng Y, Ding J, Gao W, Zhou K, Xu H. Neuregulin-1, a member of the epidermal growth factor family, mitigates STING-mediated pyroptosis and necroptosis in ischaemic flaps. BURNS & TRAUMA 2024; 12:tkae035. [PMID: 38855574 PMCID: PMC11162832 DOI: 10.1093/burnst/tkae035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 05/22/2024] [Accepted: 05/22/2024] [Indexed: 06/11/2024]
Abstract
Background Ensuring the survival of the distal end of a random flap during hypoperfusion (ischaemia) is difficult in clinical practice. Effective prevention of programmed cell death is a potential strategy for inhibiting ischaemic flap necrosis. The activation of stimulator of interferon genes (STING) pathway promotes inflammation and leads to cell death. The epidermal growth factor family member neuregulin-1 (NRG1) reduces cell death by activating the protein kinase B (AKT) signalling pathway. Moreover, AKT signalling negatively regulates STING activity. We aimed to verify the efficacy of NRG1 injection in protecting against flap necrosis. Additionally, we investigated whether NRG1 effectively enhances ischemic flap survival by inhibiting pyroptosis and necroptosis through STING suppression. Methods A random-pattern skin flap model was generated on the backs of C57BL/6 mice. The skin flap survival area was determined. The blood supply and vascular network of the flap was assessed by laser Doppler blood flow analysis. Cluster of differentiation 34 immunohistochemistry (IHC) and haematoxylin and eosin (H&E) staining of the flap sections revealed microvessels. Transcriptome sequencing analysis revealed the mechanism by which NRG1 promotes the survival of ischaemic flaps. The levels of angiogenesis, oxidative stress, necroptosis, pyroptosis and indicators associated with signalling pathways in flaps were examined by IHC, immunofluorescence and Western blotting. Packaging adeno-associated virus (AAV) was used to activate STING in flaps. Results NRG1 promoted the survival of ischaemic flaps. An increased subcutaneous vascular network and neovascularization were found in ischaemic flaps after the application of NRG1. Transcriptomic gene ontology enrichment analysis and protein level detection indicated that necroptosis, pyroptosis and STING activity were reduced in the NRG1 group. The phosphorylation of AKT and forkhead box O3a (FOXO3a) were increased after NRG1 treatment. The increased expression of STING in flaps induced by AAV reversed the therapeutic effect of NRG1. The ability of NRG1 to phosphorylate AKT-FOXO3a, inhibit STING and promote flap survival was abolished after the application of the AKT inhibitor MK2206. Conclusions NRG1 inhibits pyroptosis and necroptosis by activating the AKT-FOXO3a signalling pathway to suppress STING activation and promote ischaemic flap survival.
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Affiliation(s)
- Xuwei Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Gaoxiang Yu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Ya Lv
- The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang Street, Ouhai District, Wenzhou 325000, China
| | - Ningning Yang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Yinuo Zhao
- School of Pharmaceutical Science of Zhejiang Chinese Medical University, NO. 548 Binwen Road, Binjiang District, Hangzhou 310000, China
| | - Feida Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Jiayi Zhao
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Zhuliu Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Yingying Lai
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Liang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Chashan University Town, Ouhai District, Wenzhou, 325000, China
| | - Yuepiao Cai
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Chashan University Town, Ouhai District, Wenzhou, 325000, China
| | | | - Jian Ding
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
| | - Hui Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, No. 109 West Xueyuan Road, Lucheng District, Wenzhou 325027, China
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12
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Han Y, Qiu L, Wu H, Song Z, Ke P, Wu X. Focus on the cGAS-STING Signaling Pathway in Sepsis and Its Inflammatory Regulatory Effects. J Inflamm Res 2024; 17:3629-3639. [PMID: 38855170 PMCID: PMC11162626 DOI: 10.2147/jir.s465978] [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: 02/26/2024] [Accepted: 05/29/2024] [Indexed: 06/11/2024] Open
Abstract
Sepsis is a severe systemic inflammatory response commonly occurring in infectious diseases, caused by infection with virulent pathogens. In the pathogenesis of sepsis, the cyclic guanosine monophosphate (GMP)-adenosine monophosphate (AMP) synthase-stimulator of interferon genes (cGAS-STING) signaling pathway serves a crucial role as a fundamental immunoregulatory mechanism. This signaling pathway activates STING upon recognizing intracellular DNA damage and pathogen-derived DNA, subsequently inducing the production of numerous inflammatory mediators, including interferon and inflammatory cytokines, which in turn trigger an inflammatory response. The aim of this paper is to explore the activation mechanism of the cGAS-STING signaling pathway in sepsis and its impact on inflammatory regulation. By delving into the mechanism of action of the cGAS-STING signaling pathway in sepsis, we aim to identify new therapeutic strategies for the treatment and prevention of sepsis.
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Affiliation(s)
- Yupeng Han
- Department of Anesthesiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou, Fujian, People’s Republic of China
| | - Liangcheng Qiu
- Department of Anesthesiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou, Fujian, People’s Republic of China
| | - Haixing Wu
- Department of Anesthesiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou, Fujian, People’s Republic of China
| | - Zhiwei Song
- Department of Neurology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
| | - Peng Ke
- Department of Anesthesiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou, Fujian, People’s Republic of China
| | - Xiaodan Wu
- Department of Anesthesiology, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, People’s Republic of China
- Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou, Fujian, People’s Republic of China
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Ednacot EMQ, Nabhani A, Dinh DM, Morehouse BR. Pharmacological potential of cyclic nucleotide signaling in immunity. Pharmacol Ther 2024; 258:108653. [PMID: 38679204 DOI: 10.1016/j.pharmthera.2024.108653] [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: 01/07/2024] [Revised: 03/16/2024] [Accepted: 04/17/2024] [Indexed: 05/01/2024]
Abstract
Cyclic nucleotides are important signaling molecules that play many critical physiological roles including controlling cell fate and development, regulation of metabolic processes, and responding to changes in the environment. Cyclic nucleotides are also pivotal regulators in immune signaling, orchestrating intricate processes that maintain homeostasis and defend against pathogenic threats. This review provides a comprehensive examination of the pharmacological potential of cyclic nucleotide signaling pathways within the realm of immunity. Beginning with an overview of the fundamental roles of cAMP and cGMP as ubiquitous second messengers, this review delves into the complexities of their involvement in immune responses. Special attention is given to the challenges associated with modulating these signaling pathways for therapeutic purposes, emphasizing the necessity for achieving cell-type specificity to avert unintended consequences. A major focus of the review is on the recent paradigm-shifting discoveries regarding specialized cyclic nucleotide signals in the innate immune system, notably the cGAS-STING pathway. The significance of cyclic dinucleotides, exemplified by 2'3'-cGAMP, in controlling immune responses against pathogens and cancer, is explored. The evolutionarily conserved nature of cyclic dinucleotides as antiviral agents, spanning across diverse organisms, underscores their potential as targets for innovative immunotherapies. Findings from the last several years have revealed a striking diversity of novel bacterial cyclic nucleotide second messengers which are involved in antiviral responses. Knowledge of the existence and precise identity of these molecules coupled with accurate descriptions of their associated immune defense pathways will be essential to the future development of novel antibacterial therapeutic strategies. The insights presented herein may help researchers navigate the evolving landscape of immunopharmacology as it pertains to cyclic nucleotides and point toward new avenues or lines of thinking about development of therapeutics against the pathways they regulate.
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Affiliation(s)
- Eirene Marie Q Ednacot
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California Irvine, Irvine, CA 92697, USA
| | - Ali Nabhani
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA
| | - David M Dinh
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA
| | - Benjamin R Morehouse
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California Irvine, Irvine, CA 92697, USA; Institute for Immunology, University of California Irvine, Irvine, CA 92697, USA; Center for Virus Research, University of California Irvine, Irvine, CA 92697, USA.
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14
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Zhao L, Zhang Z, Wang P, Zhang N, Shen H, Wu H, Wei Z, Yang F, Wang Y, Yu Z, Li H, Hu Z, Zhai H, Wang Z, Su F, Xie K, Li Y. NHH promotes Sepsis-associated Encephalopathy with the expression of AQP4 in astrocytes through the gut-brain Axis. J Neuroinflammation 2024; 21:138. [PMID: 38802927 PMCID: PMC11131257 DOI: 10.1186/s12974-024-03135-2] [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: 03/26/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024] Open
Abstract
Sepsis-associated encephalopathy (SAE) is a significant cause of mortality in patients with sepsis. Despite extensive research, its exact cause remains unclear. Our previous research indicated a relationship between non-hepatic hyperammonemia (NHH) and SAE. This study aimed to investigate the relationship between NHH and SAE and the potential mechanisms causing cognitive impairment. In the in vivo experimental results, there were no significant abnormalities in the livers of mice with moderate cecal ligation and perforation (CLP); however, ammonia levels were elevated in the hippocampal tissue and serum. The ELISA study suggest that fecal microbiota transplantation in CLP mice can reduce ammonia levels. Reduction in ammonia levels improved cognitive dysfunction and neurological impairment in CLP mice through behavioral, neuroimaging, and molecular biology studies. Further studies have shown that ammonia enters the brain to regulate the expression of aquaporins-4 (AQP4) in astrocytes, which may be the mechanism underlying brain dysfunction in CLP mice. The results of the in vitro experiments showed that ammonia up-regulated AQP4 expression in astrocytes, resulting in astrocyte damage. The results of this study suggest that ammonia up-regulates astrocyte AQP4 expression through the gut-brain axis, which may be a potential mechanism for the occurrence of SAE.
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Affiliation(s)
- Lina Zhao
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Zhen Zhang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Pei Wang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Nannan Zhang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Hao Shen
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Hening Wu
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Zhiyong Wei
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Fei Yang
- Department of Critical Care Medicine, Chifeng Municipal Hospital, Chifeng Clinical Medical College of Inner Mongolia Medical University, Chifeng, 024000, China
| | - Yunying Wang
- Department of Critical Care Medicine, Chifeng Municipal Hospital, Chifeng Clinical Medical College of Inner Mongolia Medical University, Chifeng, 024000, China
| | - Zhijie Yu
- Department of Critical Care Medicine, Chifeng Municipal Hospital, Chifeng Clinical Medical College of Inner Mongolia Medical University, Chifeng, 024000, China
| | - Haibo Li
- Department of Anesthesiology, Chifeng Municipal Hospital, Chifeng Clinical Medical College of Inner Mongolia Medical University, Chifeng, 024000, China
| | - Zhanfei Hu
- Department of Anesthesiology, Chifeng Municipal Hospital, Chifeng Clinical Medical College of Inner Mongolia Medical University, Chifeng, 024000, China
| | - Hongyan Zhai
- Department of Ultrasound, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Zhiwei Wang
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Fuhong Su
- Experimental Laboratory of the Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, 1070, Belgium
| | - Keliang Xie
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China.
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, 300052, China.
| | - Yun Li
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, 300052, China.
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Jia Y, Zhu G, Qiu C, Lai JM, Shen Y, Jin SW, Yang X, Zhu HP, Hu BC, Ye XM, Mo SJ. Pellino1 orchestrates gut-kidney axis to perpetuate septic acute kidney injury through activation of STING pathway and NLRP3 inflammasome. Life Sci 2024; 345:122604. [PMID: 38580196 DOI: 10.1016/j.lfs.2024.122604] [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: 02/04/2024] [Revised: 03/11/2024] [Accepted: 03/28/2024] [Indexed: 04/07/2024]
Abstract
AIMS Intestinal barrier dysfunction is the initial and propagable factor of sepsis in which acute kidney injury (AKI) has been considered as a common life-threatening complication. Our recent study identifies the regulatory role of Pellino1 in tubular death under inflammatory conditions in vitro. The objective of our current study is to explore the impact of Pellino1 on gut-kidney axis during septic AKI and uncover the molecular mechanism (s) underlying this process. MATERIALS AND METHODS Immunohistochemistry (IHC) was conducted to evaluate Pellino1 and NOD-like receptor thermal protein domain associated protein 3 (NLRP3) levels in renal biopsies from critically ill patients with a clinical diagnosis of sepsis. Functional and mechanistic studies were characterized in septic models of the Peli-knockout (Peli1-/-) mice by histopathological staining, enzyme-linked immunosorbent assay (ELISA), flow cytometry, immunofluorescence, biochemical detection, CRISPR/Cas9-mediated gene editing and intestinal organoid. KEY FINDINGS Pellino1, together with NLRP3, are highly expressed in renal biopsies from critically ill patients diagnosed with sepsis and kidney tissues of septic mice. The Peli1-/- mice with sepsis become less prone to develop AKI and have markedly compromised NLRP3 activation in kidney. Loss of Peli1 endows septic mice refractory to intestinal inflammation, barrier permeability and enterocyte apoptosis that requires stimulator of interferons genes (STING) pathway. Administration of STING agonist DMXAA deteriorates AKI and mortality of septic Peli1-/- mice in the presence of kidney-specific NLRP3 reconstitution. SIGNIFICANCE Our studies suggest that Pellino1 has a principal role in orchestrating gut homeostasis towards renal pathophysiology, thus providing a potential therapeutic target for septic AKI.
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Affiliation(s)
- Yu Jia
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, PR China
| | - Ge Zhu
- Center for Veterinary Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, PR China
| | - Cheng Qiu
- Department of Ultrasound in Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang, PR China
| | - Jun-Mei Lai
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China
| | - Ye Shen
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China
| | - Shu-Wen Jin
- Zhejiang Lab, Hangzhou 311121, Zhejiang, PR China
| | - Xue Yang
- Clinical Research Institute, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China
| | - Hai-Ping Zhu
- Department of Intensive Care Unit, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325000, Zhejiang, PR China
| | - Bang-Chuan Hu
- Emergency and Intensive Care Unit Center, Intensive Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China
| | - Xiang-Ming Ye
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China; Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China
| | - Shi-Jing Mo
- Center for Rehabilitation Medicine, Department of Intensive Rehabilitation Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China; Emergency and Intensive Care Unit Center, Intensive Care Unit, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou 310014, Zhejiang, PR China.
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16
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Jiang T, Liu E, Li Z, Yan C, Zhang X, Guan J, Zhan Y, Zhao B, Ding W. SIRT1-Rab7 axis attenuates NLRP3 and STING activation through late endosomal-dependent mitophagy during sepsis-induced acute lung injury. Int J Surg 2024; 110:2649-2668. [PMID: 38445453 PMCID: PMC11093444 DOI: 10.1097/js9.0000000000001215] [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: 11/21/2023] [Accepted: 02/05/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND Acute lung injury (ALI) is a leading cause of mortality in patients with sepsis due to proinflammatory endothelial changes and endothelial permeability defects. Mitochondrial dysfunction is recognized as a critical mediator in the pathogenesis of sepsis-induced ALI. Although mitophagy regulation of mitochondrial quality is well recognized, little is known about its role in lung ECs during sepsis-induced ALI. Sirtuin 1 (SIRT1) is a histone protein deacetylase involved in inflammation, mitophagy, and cellular senescence. Here, the authors show a type of late endosome-dependent mitophagy that inhibits NLRP3 and STING activation through SIRT1 signaling during sepsis-induced ALI. METHODS C57BL/6J male mice with or without administration of the SIRT1 inhibitor EX527 in the CLP model and lung ECs in vitro were developed to identify mitophagy mechanisms that underlie the cross-talk between SIRT1 signaling and sepsis-induced ALI. RESULTS SIRT1 deficient mice exhibited exacerbated sepsis-induced ALI. Knockdown of SIRT1 interfered with mitophagy through late endosome Rab7, leading to the accumulation of damaged mitochondria and inducing excessive mitochondrial reactive oxygen species (mtROS) generation and cytosolic release of mitochondrial DNA (mtDNA), which triggered NLRP3 inflammasome and the cytosolic nucleotide sensing pathways (STING) over-activation. Pharmacological inhibition of STING and NLRP3 i n vivo or genetic knockdown in vitro reversed SIRT1 deficiency mediated endothelial permeability defects and endothelial inflammation in sepsis-induced ALI. Moreover, activation of SIRT1 with SRT1720 in vivo or overexpression of SIRT1 in vitro protected against sepsis-induced ALI. CONCLUSION These findings suggest that SIRT1 signaling is essential for restricting STING and NLRP3 hyperactivation by promoting endosomal-mediated mitophagy in lung ECs, providing potential therapeutic targets for treating sepsis-induced ALI.
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Affiliation(s)
- Tao Jiang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Enran Liu
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Zhiyuan Li
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Congmin Yan
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Xiaoyun Zhang
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Jingting Guan
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
| | - Yuanbo Zhan
- Department of Periodontology and Oral Mucosa, The Second Affiliated Hospital, Harbin Medical University
| | - Bo Zhao
- School of Forestry, Northeast Forestry University, Harbin, People’s Republic of China
| | - Wengang Ding
- Department of Anesthesiology (Hei Long Jiang Province Key Lab of Research on Anesthesiology and Critical Care Medicine)
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17
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Luo X, Zhao Y, Luo Y, Lai J, Ji J, Huang J, Chen Y, Liu Z, Liu J. Cytosolic mtDNA-cGAS-STING axis contributes to sepsis-induced acute kidney injury via activating the NLRP3 inflammasome. Clin Exp Nephrol 2024; 28:375-390. [PMID: 38238499 DOI: 10.1007/s10157-023-02448-5] [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: 05/25/2023] [Accepted: 12/10/2023] [Indexed: 04/23/2024]
Abstract
BACKGROUND NLRP3 inflammasome activation is significantly associated with sepsis-induced acute kidney injury (S-AKI). Cytosolic DNA derived from damaged mitochondria has been reported to activate NLRP3 inflammasome via upregulating the cyclic GMP-AMP synthase (cGAS)-the stimulator of interferon genes (STING) axis in nucleus pulposus cell and cardiomyocytes. However, the regulatory effect of mitochondria DNA (mtDNA)-cGAS-STING axis on the NLRP3 inflammasome in S-AKI remains unclear. METHODS In the current study, we established an in vivo model of S-AKI by intraperitoneally injecting male C57BL/6 J mice with lipopolysaccharide (LPS). Next, selective cGAS inhibitor RU.521, and STING agonist DMXAA were intraperitoneally injected in the mice; then, blood urea nitrogen (BUN), serum creatinine (CRE), urinary kidney injury molecular-1 (KIM-1), pathological changes, and infiltrated neutrophils were detected to assess kidney injury. We also performed western blot and immunofluorescence assays to evaluate STING, cGAS, TBK-1, p-TBK-1, IRF3, p-IRF3, NF-kB, p-NF-kB, NLRP3, cleaved caspase-1, caspase-1, GSDMD-N, and GSDMD expression levels in kidney tissues. IL-18 and IL-1β in renal tissue were identified by ELISA. In vitro, we treated HK-2 cells with LPS to establish a cell model of S-AKI. Furthermore, ethidium bromide (EtBr) was administered to deplete mitochondria DNA (mtDNA). LPS-induced cytotoxicity was evaluated by LDH release assay. Protein expression of cGAS, STING, and NLRP3 in was quantified by western blot. Cytosolic mtDNA was detected by immunofluorescence and q-PCR. Released IL-1β and IL-18 in HK-2 supernatants were detected by ELISA. RESULTS LPS injection induced S-AKI in mice, as evidenced by neutrophil infiltration, tubular vacuolation, and increased levels of serum creatinine (CRE), blood urea nitrogen (BUN), and urinary KIM-1. In addition, LPS activated the cGAS-STING axis and NLRP3 inflammasome in vivo, illustrated by increased phosphorylation levels of TBK-1, IRF3, and NF-kB protein, increased ratio of cleaved caspase-1 to caspase-1 and GSDMD-N to GSDMD, and increased IL-1β and IL-18 levels. Moreover, the cGAS inhibitor RU.521 effectively attenuated NLRP3 inflammasome and S-AKI; however, these effects were abolished by treatment with the STING agonist DMXAA. Furthermore, cytosolic release of mtDNA and activation of the cGAS-STING-NLRP3 axis were observed in LPS-treated HK-2 cells. Inhibiting mtDNA replication by Ethidium Bromide (EtBr) treatment reduced cytosolic mtDNA accumulation and downregulated the cGAS-STING-NLRP3 axis, ameliorating the cytotoxicity induced by LPS. CONCLUSION This study demonstrated that the cGAS-STING axis was triggered by cytosolic mtDNA and participated in the development of S-AKI by activating NLRP3 inflammasome. Reducing cytosolic mtDNA accumulation or inhibiting the cGAS-STING axis may be potential therapeutic targets for S-AKI.
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Affiliation(s)
- Xi Luo
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Yang Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, No.1 Maoyuan South Road, Nanchong, 637000, Sichuan, China
| | - Yunpeng Luo
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
- Department of Anesthesiology, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Jian Lai
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Jiemei Ji
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Jiao Huang
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Yuanyuan Chen
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Ziru Liu
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Jingchen Liu
- Department of Anesthesiology, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi, China.
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Chen H, Yu Z, Qi Z, Huang X, Gao J. Tongfu Lifei Decoction Attenuated Sepsis-Related Intestinal Mucosal Injury Through Regulating Th17/Treg Balance and Modulating Gut Microbiota. J Interferon Cytokine Res 2024; 44:208-220. [PMID: 38691831 DOI: 10.1089/jir.2024.0001] [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] [Indexed: 05/03/2024] Open
Abstract
Intestinal damage and secondary bacterial translocation are caused by the inflammatory response induced by sepsis. Tongfu Lifei (TLF) decoction has a protective effect on sepsis-related gastrointestinal function injury. However, the relation between gut microbiota, immune barrier, and sepsis under the treatment of TLF have not been well clarified yet. Here, rats were subjected to cecal ligation and puncture (CLP) to create a sepsis model. Subsequently, the TLF decoction was given to CLP rats by gavage, fecal microbiota transplantation (FMT), and antibiotic were used as positive control. TLF suppressed the inflammatory response and improved the pathological changes in the intestines of CLP rats. Besides, TLF promoted the balance of the percentage of the Th17 and Treg cells. Intestinal barrier function was also improved by TLF through enhancing ZO-1, and Occludin and Claudin 1 expression, preventing the secondary translocation of other gut microbiota. TLF dramatically boosted the gut microbiota's alpha- and beta-diversity in CLP rats. Moreover, it increased the relative abundance of anti-inflammatory gut microbiota and changed the progress of the glucose metabolism. In short, TLF regulated the gut microbiota to balance the ratio of Th17/Treg cells, reducing the inflammation in serum and intestinal mucosal injury in rats.
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Affiliation(s)
- Huizhen Chen
- Department of Intensive Care Medicine, and Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medicine University, Hangzhou, China
| | - Zhenfei Yu
- Department of Intensive Care Medicine, and Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medicine University, Hangzhou, China
| | - Zeming Qi
- Department of Infectious Diseases, Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medicine University, Hangzhou, China
| | - Xiaozhe Huang
- Department of Infectious Diseases, Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medicine University, Hangzhou, China
| | - Jianting Gao
- Department of Intensive Care Medicine, and Hangzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medicine University, Hangzhou, China
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19
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Lan J, Deng Z, Wang Q, Li D, Fan K, Chang J, Ma Y. Neuropeptide substance P attenuates colitis by suppressing inflammation and ferroptosis via the cGAS-STING signaling pathway. Int J Biol Sci 2024; 20:2507-2531. [PMID: 38725846 PMCID: PMC11077368 DOI: 10.7150/ijbs.94548] [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: 01/22/2024] [Accepted: 04/13/2024] [Indexed: 05/12/2024] Open
Abstract
Neuropeptide substance P (SP) belongs to a family of bioactive peptides and regulates many human diseases. This study aims to investigate the role and underlying mechanisms of SP in colitis. Here, activated SP-positive neurons and increased SP expression were observed in dextran sodium sulfate (DSS)-induced colitis lesions in mice. Administration of exogenous SP efficiently ameliorated the clinical symptoms, impaired intestinal barrier function, and inflammatory response. Mechanistically, SP protected mitochondria from damage caused by DSS or TNF-α exposure, preventing mitochondrial DNA (mtDNA) leakage into the cytoplasm, thereby inhibiting the cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway. SP can also directly prevent STING phosphorylation through the neurokinin-1 receptor (NK1R), thereby inhibiting the activation of the TBK1-IRF3 signaling pathway. Further studies revealed that SP alleviated the DSS or TNF-α-induced ferroptosis process, which was associated with repressing the cGAS-STING signaling pathway. Notably, we identified that the NK1R inhibition reversed the effects of SP on inflammation and ferroptosis via the cGAS-STING pathway. Collectively, we unveil that SP attenuates inflammation and ferroptosis via suppressing the mtDNA-cGAS-STING or directly acting on the STING pathway, contributing to improving colitis in an NK1R-dependent manner. These findings provide a novel mechanism of SP regulating ulcerative colitis (UC) disease.
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Affiliation(s)
| | | | | | | | | | | | - Yunfei Ma
- State Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
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20
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Li B, Zhang X, Zhang Q, Zheng T, Li Q, Yang S, Shao J, Guan W, Zhang S. Nutritional strategies to reduce intestinal cell apoptosis by alleviating oxidative stress. Nutr Rev 2024:nuae023. [PMID: 38626282 DOI: 10.1093/nutrit/nuae023] [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] [Indexed: 04/18/2024] Open
Abstract
The gut barrier is the first line of defense against harmful substances and pathogens in the intestinal tract. The balance of proliferation and apoptosis of intestinal epithelial cells (IECs) is crucial for maintaining the integrity of the intestinal mucosa and its function. However, oxidative stress and inflammation can cause DNA damage and abnormal apoptosis of the IECs, leading to the disruption of the intestinal epithelial barrier. This, in turn, can directly or indirectly cause various acute and chronic intestinal diseases. In recent years, there has been a growing understanding of the vital role of dietary ingredients in gut health. Studies have shown that certain amino acids, fibers, vitamins, and polyphenols in the diet can protect IECs from excessive apoptosis caused by oxidative stress, and limit intestinal inflammation. This review aims to describe the molecular mechanism of apoptosis and its relationship with intestinal function, and to discuss the modulation of IECs' physiological function, the intestinal epithelial barrier, and gut health by various nutrients. The findings of this review may provide a theoretical basis for the use of nutritional interventions in clinical intestinal disease research and animal production, ultimately leading to improved human and animal intestinal health.
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Affiliation(s)
- Baofeng Li
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Xiaoli Zhang
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qianzi Zhang
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Tenghui Zheng
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Qihui Li
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Siwang Yang
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jiayuan Shao
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Wutai Guan
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Shihai Zhang
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, China
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21
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Wang Y, Feng S, Shi H, Lu Y, Zhang J, Zhang W, Xu Y, Liang Q, Sun L. Analysis of alterations in serum vitamins and correlations with gut microbiome, microbial metabolomics in patients with sepsis. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1237:124101. [PMID: 38547698 DOI: 10.1016/j.jchromb.2024.124101] [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: 01/08/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND Vitamins are essential micronutrients that play key roles in many biological pathways associated with sepsis. The gut microbiome plays a pivotal role in the progression of sepsis and may contribute to the onset of multi-organ dysfunction syndrome (MODS). The aim of this study was to investigate the changes in serum vitamins, and their correlation with intestinal flora and metabolomic profiles in patients with sepsis. METHODS The serum levels of vitamins were determined by Ultra Performance Liquid Chromatography (UPLC). 16S rRNA gene sequencing and Liquid Chromatography-tandem Mass Spectrometry (LC-MS/MS) targeted metabolomics were used for microbiome and metabolome analysis. RESULTS In the training cohort: After univariate, multivariate (OPLS-DA) and Spearman analyses, it was concluded that vitamin levels of 25 (OH) VD3 and (VD2 + VD3), as well as vitamins A and B9, differed significantly among healthy controls (HC), non-septic critical patients (NS), and sepsis patients (SS) (P < 0.05). The validation cohort confirmed the differential vitamin findings from the training cohort. Moreover, analyses of gut flora and metabolites in septic patients and healthy individuals revealed differential flora, metabolites, and metabolic pathways that were linked to alterations in serum vitamin levels. We found for the first time that vitamin B9 was negatively correlated with g_Sellimonas. CONCLUSION Sepsis patients exhibited significantly lower levels of 25 (OH) VD3 and (VD2 + VD3), vitamins A and B9, which hold potential as predictive markers for sepsis prognosis. The changes in these vitamins may be associated with inflammatory factors, oxidative stress, and changes in gut flora.
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Affiliation(s)
- Yingchen Wang
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Susu Feng
- Department of Endocrinology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Hongwei Shi
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Yuxin Lu
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Jingtao Zhang
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Wanglin Zhang
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Yuzhi Xu
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Qi Liang
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China
| | - Liqun Sun
- Department of Intensive Care Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210000, People's Republic of China.
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22
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Zhang Y, Yang H, Hou S, Xia Y, Wang YQ. Influence of the brain‑gut axis on neuroinflammation in cerebral ischemia‑reperfusion injury (Review). Int J Mol Med 2024; 53:30. [PMID: 38299236 PMCID: PMC10852013 DOI: 10.3892/ijmm.2024.5354] [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: 10/23/2023] [Accepted: 01/15/2024] [Indexed: 02/02/2024] Open
Abstract
Stroke, a debilitating cerebrovascular ailment, poses significant threats to human life and health. The intricate interplay between the gut‑brain‑microbiota axis (GBMA) and cerebral ischemia‑reperfusion has increasingly become a focal point of scientific exploration, emerging as a pivotal research avenue in stroke pathophysiology. In the present review, the authors delved into the nexus between the GBMA and neuroinflammation observed post‑stroke. The analysis underscored the pivotal roles of histone deacetylase 3 and neutrophil extracellular traps subsequent to stroke incidents. The influence of gut microbial compositions and their metabolites, notably short‑chain fatty acids and trimethylamine N‑oxide, on neuroinflammatory processes, was further elucidated. The involvement of immune cells, especially regulatory T‑cells, and the intricate signaling cascades including cyclic GMP‑AMP synthase/stimulator of interferon genes/Toll‑like receptor, further emphasized the complex regulatory mechanisms of GBMA in cerebral ischemia/reperfusion injury (CI/RI). Collectively, the present review offered a comprehensive perspective on the metabolic, immune and inflammatory modulations orchestrated by GBMA, augmenting the understanding of its role in neuroinflammation following CI/RI.
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Affiliation(s)
- Yifeng Zhang
- Department of Neurology II, The Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261041, P.R. China
| | - Hang Yang
- Department of Emergency, The Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261041, P.R. China
| | - Shuai Hou
- Department of Emergency, The Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261041, P.R. China
| | - Yulei Xia
- Department of Neurology II, The Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261041, P.R. China
| | - Yan-Qiang Wang
- Department of Neurology II, The Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, Shandong 261041, P.R. China
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23
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Wu R, Xu J, Zeng H, Fan Y, Li H, Peng T, Xiao F. Golden bifid treatment regulates gut microbiota and serum metabolites to improve myocardial dysfunction in cecal ligation and puncture-induced sepsis mice. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167049. [PMID: 38301856 DOI: 10.1016/j.bbadis.2024.167049] [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: 07/27/2023] [Revised: 01/07/2024] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Myocardial damage is a major consequence and a significant contributor to death in cases of sepsis, a severe infection characterized by a distinct inflammatory response and a potential threat to the patient's life. Recently, the effects of intestinal microbiota and serum metabolites on sepsis have garnered increasing attention. Herein, the effects of golden bifid treatment upon cecal ligation and puncture (CLP)-induced sepsis in mice as a model for myocardial dysfunction were explored. Our results demonstrated that golden bifid treatment partially improved myocardial dysfunction and apoptosis, cardiac inflammation and oxidative stress, and intestinal mucosal permeability and barrier dysfunction in CLP-induced sepsis mice. The intestinal microbiota diversity and abundance were also altered within sepsis mice and improved by golden bifid treatment. Mucispirillum schaedleri, Acinetobacter baumannii and Lactobacullus intestinalis were significantly correlated with heart damage markers, inflammatory factors, or oxidative stress indicators. Serum differential metabolite levels were also significantly correlated with these parameters. Altogether, golden bifid treatment might be an underlying approach for treating sepsis-induced myocardial dysfunction and highlight the underlying effect of intestinal microbiota and serum metabolites on the pathogenesis and treatment of sepsis-triggered myocardial dysfunction.
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Affiliation(s)
- Rui Wu
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Junmei Xu
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Hua Zeng
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Yongmei Fan
- Department of Rehabilitation, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Hui Li
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Tian Peng
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Feng Xiao
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China.
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24
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Chang B, Wang Y, Tu W, Zhang Z, Pu Y, Xie L, Yuan F, Gao Y, Xu N, Yao Q. Regulatory effects of mangiferin on LPS-induced inflammatory responses and intestinal flora imbalance during sepsis. Food Sci Nutr 2024; 12:2068-2080. [PMID: 38455195 PMCID: PMC10916552 DOI: 10.1002/fsn3.3907] [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: 09/01/2023] [Revised: 11/19/2023] [Accepted: 12/08/2023] [Indexed: 03/09/2024] Open
Abstract
Studies suggest that mangiferin (MAF) has good therapeutic effects on chronic bronchitis and hepatitis. Also, it is one of the antiviral ingredients in Anemarrhena asphodeloides Bunge. However, its effect on the LPS-induced inflammation and intestinal flora during sepsis remains unclear yet. In the present study, LPS-stimulated inflammation RAW264.7 cells and LPS-induced sepsis mice were used to evaluate the efficacy of MAF in vitro and in vivo. 16S rDNA sequencing was performed to analyze the characteristics of intestinal flora of the sepsis mice. It has been demonstrated that MAF (12.5 and 25 μg/mL) significantly inhibited protein expressions of TLR4, MyD88, NF-κB, and TNF-α in the LPS-treated cells and reduced the supernatant TNF-α and IL-6 levels. In vivo, MAF (20 mg/kg) markedly protected the sepsis mice and reduced the serum TNF-α and IL-6 levels. Also, MAF significantly downregulated the protein expressions of TLR4, NF-κB, and MyD88 in the livers. Importantly, MAF significantly attenuated the pathological injuries of the livers and small intestines. Further, MAF significantly increased proportion of Bacteroidota and decreased the proportions of Firmicutes, Desulfobacterota, Actinobacteriota, and Proteobacteria at phylum level, and it markedly reduced the proportions of Escherichia-Shigella, Pseudoalteromonas, Staphylococcus at genus level. Moreover, MAF affects some metabolism-related pathways such as citrate cycle (TCA cycle), lipoic acid metabolism, oxidative phosphorylation, bacterial chemotaxis, fatty acid biosynthesis, and peptidoglycan biosynthesis of the intestinal flora. Thus, it can be concluded that MAF as a treatment reduces the inflammatory responses in vitro and in vivo by inhibiting the TLR4/ MyD88/NF-κB pathway, and corrects intestinal flora imbalance during sepsis to some degree.
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Affiliation(s)
- Bo‐tao Chang
- Department of PostgraduateGuizhou University of Traditional Chinese MedicineGuiyangChina
| | - Yang Wang
- Department of General SurgeryThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Wen‐lian Tu
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Zhi‐qing Zhang
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Yan‐fang Pu
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Li Xie
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Fang Yuan
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Ying Gao
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
- The First Affiliated Hospital, Guizhou University of Traditional Chinese MedicineGuiyangChina
| | - Ning Xu
- Department of Clinical LaboratoryThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Qi Yao
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
- The First Affiliated Hospital, Guizhou University of Traditional Chinese MedicineGuiyangChina
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25
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Zhang M, Yan W, Wang T, Pei S, Wang J, Ji B, Wang G. Deoxyribonuclease I Alleviates Septic Liver Injury in a Rat Model Supported by Venoarterial Extracorporeal Membrane Oxygenation. ASAIO J 2024; 70:241-247. [PMID: 37923309 PMCID: PMC10885865 DOI: 10.1097/mat.0000000000002084] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023] Open
Abstract
Sepsis is an unusual systemic reaction with high mortality and secondary septic liver injury is proposed to be the major cause of mortality. Extracorporeal membrane oxygenation (ECMO) can enhance terminal organ perfusion by elevating circulatory support which is used in severe sepsis patients. However, the interaction of blood components with the biomaterials of the extracorporeal membrane elicits a systemic inflammatory response. Besides, inflammation and apoptosis are the main mediators in the pathophysiology of septic liver injury. Therefore, we investigated the protective effect of Deoxyribonuclease I (DNase I) against septic liver injury supported by ECMO in rats. Sepsis was induced by lipopolysaccharide (LPS) and 24 hours after the administration, the rats were treated with ECMO. Then blood samples and liver tissues were collected. DNase I significantly attenuated the level of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and significantly decreased hepatic levels of NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome, myeloperoxidase (MPO), downstream inflammatory factor interleukin-1β (IL-1β) and interleukin-18 (IL-18), and improved neutrophil infiltration. Additionally, DNase I significantly reduced the expression of apoptosis key protein and terminal-deoxynucleotidyl transferase-mediated nick end labeling (TUNEL)-labeled apoptotic hepatocytes. In summary, our findings demonstrated that DNase I alleviates liver injury in ECMO-supported septic rats by reducing the inflammatory and apoptotic responses.
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Affiliation(s)
- Mingru Zhang
- From the Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Weidong Yan
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- Department of Anesthesiology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Tianlong Wang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shengqiang Pei
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jing Wang
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Bingyang Ji
- Department of Cardiopulmonary Bypass, Fuwai Hospital, National Center for Cardiovascular Disease, State Key Laboratory of Cardiovascular Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Guyan Wang
- From the Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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26
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Akama Y, Murao A, Aziz M, Wang P. Extracellular CIRP induces CD4CD8αα intraepithelial lymphocyte cytotoxicity in sepsis. Mol Med 2024; 30:17. [PMID: 38302880 PMCID: PMC10835974 DOI: 10.1186/s10020-024-00790-2] [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: 10/26/2023] [Accepted: 01/23/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND In sepsis, intestinal barrier dysfunction is often caused by the uncontrolled death of intestinal epithelial cells (IECs). CD4CD8αα intraepithelial lymphocytes (IELs), a subtype of CD4+ T cells residing within the intestinal epithelium, exert cytotoxicity by producing granzyme B (GrB) and perforin (Prf). Extracellular cold-inducible RNA-binding protein (eCIRP) is a recently identified alarmin which stimulates TLR4 on immune cells to induce proinflammatory responses. Here, we hypothesized that eCIRP enhances CD4CD8αα IEL cytotoxicity and induces IEC death in sepsis. METHODS We subjected wild-type (WT) and CIRP-/- mice to sepsis by cecal ligation and puncture (CLP) and collected the small intestines to isolate IELs. The expression of GrB and Prf in CD4CD8αα IELs was assessed by flow cytometry. IELs isolated from WT and TLR4-/- mice were challenged with recombinant mouse CIRP (eCIRP) and assessed the expression of GrB and Prf in CD4CD8αα by flow cytometry. Organoid-derived IECs were co-cultured with eCIRP-treated CD4CD8αα cells in the presence/absence of GrB and Prf inhibitors and assessed IEC death by flow cytometry. RESULTS We found a significant increase in the expression of GrB and Prf in CD4CD8αα IELs of septic mice compared to sham mice. We found that GrB and Prf levels in CD4CD8αα IELs were increased in the small intestines of WT septic mice, while CD4CD8αα IELs of CIRP-/- mice did not show an increase in those cytotoxic granules after sepsis. We found that eCIRP upregulated GrB and Prf in CD4CD8αα IELs isolated from WT mice but not from TLR4-/- mice. Furthermore, we also revealed that eCIRP-treated CD4CD8αα cells induced organoid-derived IEC death, which was mitigated by GrB and Prf inhibitors. Finally, histological analysis of septic mice revealed that CIRP-/- mice were protected from tissue injury and cell death in the small intestines compared to WT mice. CONCLUSION In sepsis, the cytotoxicity initiated by the eCIRP/TLR4 axis in CD4CD8αα IELs is associated with intestinal epithelial cell (IEC) death, which could lead to gut injury.
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Affiliation(s)
- Yuichi Akama
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, 350 Community Dr, 11030, Manhasset, NY, USA
| | - Atsushi Murao
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, 350 Community Dr, 11030, Manhasset, NY, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, 350 Community Dr, 11030, Manhasset, NY, USA.
- Departments of Surgery and Molecular Medicine, Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA.
| | - Ping Wang
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, 350 Community Dr, 11030, Manhasset, NY, USA.
- Departments of Surgery and Molecular Medicine, Zucker School of Medicine at Hofstra/Northwell, Manhasset, NY, USA.
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Wang G, Ma F, Zhang W, Xin Y, Ping K, Wang Y, Dong J. Malvidin alleviates LPS-induced septic intestinal injury through the nuclear factor erythroid 2-related factor 2/reactive oxygen species/NLRP3 inflammasome pathway. Inflammopharmacology 2024; 32:893-901. [PMID: 38100033 DOI: 10.1007/s10787-023-01378-8] [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: 07/06/2023] [Accepted: 09/11/2023] [Indexed: 03/03/2024]
Abstract
Emerging evidence suggests that the gastrointestinal tract plays a crucial role in the pathophysiology of sepsis, a leading cause of mortality among patients admitted to the intensive care unit (ICU). Malvidin, belonging to the flavonoid family of compounds, exhibits a range of capabilities including anti-inflammatory and antioxidant properties. Studies have demonstrated that Malvidin exhibits a dose-dependent effect in mitigating sepsis-induced intestinal injury. The advantageous impact of Malvidin in safeguarding against sepsis-induced intestinal injury is associated with its capacity to counteract oxidative stress, inhibit cellular apoptosis, diminish the secretion of pro-inflammatory cytokines, and regulate the synthesis of inflammasomes. The findings indicate that Malvidin, a natural compound, exhibits protective effects on the gut by activating the nuclear factor erythroid 2-related factor 2/reactive oxygen species/NLRP3 inflammasome pathway. These results have significant implications for potential clinical applications and offer valuable insights into the treatment of sepsis-induced intestinal injury.
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Affiliation(s)
- Guanglu Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Fenfen Ma
- Department of Medicine Laboratory, Department of Cardiology, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang, China
| | - Wei Zhang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Yue Xin
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Kaixin Ping
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China
| | - Yan Wang
- Department of Medicine Laboratory, Department of Cardiology, The Second People's Hospital of Lianyungang Affiliated to Kangda College of Nanjing Medical University, The Second People's Hospital of Lianyungang City, Lianyungang, China.
| | - Jingquan Dong
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China.
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Yang T, Xie S, Cao L, Li M, Ding L, Wang L, Pang S, Wang Z, Geng L. ASTRAGALOSIDE Ⅳ MODULATES GUT MACROPHAGES M1/M2 POLARIZATION BY RESHAPING GUT MICROBIOTA AND SHORT CHAIN FATTY ACIDS IN SEPSIS. Shock 2024; 61:120-131. [PMID: 37962207 DOI: 10.1097/shk.0000000000002262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
ABSTRACT M1 macrophage-mediated inflammation is critical in sepsis. We previously found the protective role of astragaloside intravenous (AS-IV) in sepsis-associated gut impairment, whose specific mechanism remains unknown. Gut microbiota modulates gut homeostatic balance to avoid excessive inflammation. Here, we aimed to investigate effects of AS-IV on gut macrophages polarization and potential roles of gut microbiota and short chain fatty acids (SCFAs) in septic gut damage. Mice were pretreated by AS-IV gavage for 7 days before cecal ligation and puncture. M1 polarization of gut lamina propria macrophages (LpMs) was promoted by cecal ligation and puncture, accompanied by abnormal cytokines release and intestinal barrier dysfunction. NLRP3 inflammasome was activated in M1 LpMs. 16S rRNA sequencing demonstrated gut microbiota imbalance. The levels of acetate, propionate, and butyrate in fecal samples decreased. Notably, AS-IV reversed LpMs M1/M2 polarization, lightened gut inflammation and barrier injury, reduced NLRP3 inflammasome expression in LpMs, restored the diversity of gut microbiome, and increased butyrate levels. Similarly, these benefits were mimicked by fecal microbiota transplantation or exogenous butyrate supplementation. In Caco-2 and THP-1 cocultured model, LPS and interferon γ caused THP-1 M1 polarization, Caco-2 barrier impairment, abnormal cytokines release, and high NLRP3 inflammasome expression in THP-1 cells, all of which were mitigated by butyrate administration. However, these protective effects of butyrate were abrogated by NLRP3 gene overexpression in THP-1. In conclusion, AS-IV can ameliorate sepsis-induced gut inflammation and barrier dysfunction by modulating M1/M2 polarization of gut macrophages, whose underlying mechanism may be restoring gut microbiome and SCFA to restrain NLRP3 inflammasome activation.
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Affiliation(s)
| | - Shuhua Xie
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
| | | | - Man Li
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
| | - Ling Ding
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
| | - Lei Wang
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
| | - Shenyue Pang
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
| | - Zhifen Wang
- Department of Anesthesiology, Tianjin Children's Hospital, Tianjin, China
| | - Licheng Geng
- Department of Anesthesiology, Tianjin Union Medical Center, Tianjin, China
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Abstract
The remarkable diversity of lymphocytes, essential components of the immune system, serves as an ingenious mechanism for maximizing the efficient utilization of limited host defense resources. While cell adhesion molecules, notably in gut-tropic T cells, play a central role in this mechanism, the counterbalancing molecular details have remained elusive. Conversely, we've uncovered the molecular pathways enabling extracellular vesicles secreted by lymphocytes to reach the gut's mucosal tissues, facilitating immunological regulation. This discovery sheds light on immune fine-tuning, offering insights into immune regulation mechanisms.
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Affiliation(s)
- Yasunari Matsuzaka
- Division of Molecular and Medical Genetics, Center for Gene and Cell Therapy, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
- Administrative Section of Radiation Protection, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Ryu Yashiro
- Administrative Section of Radiation Protection, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
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30
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Zhu L, Dou Z, Wu W, Hou Q, Wang S, Yuan Z, Li B, Liu J. Ghrelin/GHSR Axis Induced M2 Macrophage and Alleviated Intestinal Barrier Dysfunction in a Sepsis Rat Model by Inactivating E2F1/NF- κB Signaling. Can J Gastroenterol Hepatol 2023; 2023:1629777. [PMID: 38187112 PMCID: PMC10769719 DOI: 10.1155/2023/1629777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 10/20/2023] [Accepted: 12/11/2023] [Indexed: 01/09/2024] Open
Abstract
Sepsis is an inflammatory reaction disorder state that is induced by infection. The activation and regulation of the immune system play an essential role in the development of sepsis. Our previous studies have shown that ghrelin ameliorates intestinal dysfunction in sepsis. Very little is known about the mechanism of ghrelin and its receptor (GHSR) on the intestinal barrier and the immune function of macrophage regulation. Our research is to investigate the regulatory effect and molecular mechanism of the ghrelin/GHSR axis on intestinal dysfunction and macrophage polarization in septic rats. A rat model of sepsis was established by cecal ligation and puncture (CLP) operation. Then, the sepsis rats were treated with a ghrelin receptor agonist (TZP-101) or ghrelin inhibitor (obestatin). The results suggested that TZP-101 further enhanced ghrelin and GHSR expressions in the colon and spleen of septic rats and obestatin showed the opposite results. Ghrelin/GHSR axis ameliorated colonic structural destruction and intestinal epithelial tight junction injury in septic rats. In addition, the ghrelin/GHSR axis promoted M2-type polarization of macrophages, which was characterized by the decreases of IL-1β, IL-6, and TNF-α, as well as the increase of IL-10. Mechanistically, the ghrelin/GHSR axis promoted E2F2 expression and suppressed the activation of the NF-κB signaling pathway in septic rats. Collectively, targeting ghrelin/GHSR during sepsis may represent a novel therapeutic approach for the treatment of intestinal barrier injury.
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Affiliation(s)
- Lei Zhu
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Zhimin Dou
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Wei Wu
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Qiliang Hou
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Sen Wang
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Ziqian Yuan
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Bin Li
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Jian Liu
- Department of Intensive Care Medicine, The First Hospital of Lanzhou University, Lanzhou 730000, China
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31
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Zhang W, Jiang H, Wu G, Huang P, Wang H, An H, Liu S, Zhang W. The pathogenesis and potential therapeutic targets in sepsis. MedComm (Beijing) 2023; 4:e418. [PMID: 38020710 PMCID: PMC10661353 DOI: 10.1002/mco2.418] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 10/01/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023] Open
Abstract
Sepsis is defined as "a life-threatening organ dysfunction caused by dysregulated host systemic inflammatory and immune response to infection." At present, sepsis continues to pose a grave healthcare concern worldwide. Despite the use of supportive measures in treating traditional sepsis, such as intravenous fluids, vasoactive substances, and oxygen plus antibiotics to eradicate harmful pathogens, there is an ongoing increase in both the morbidity and mortality associated with sepsis during clinical interventions. Therefore, it is urgent to design specific pharmacologic agents for the treatment of sepsis and convert them into a novel targeted treatment strategy. Herein, we provide an overview of the molecular mechanisms that may be involved in sepsis, such as the inflammatory response, immune dysfunction, complement deactivation, mitochondrial damage, and endoplasmic reticulum stress. Additionally, we highlight important targets involved in sepsis-related regulatory mechanisms, including GSDMD, HMGB1, STING, and SQSTM1, among others. We summarize the latest advancements in potential therapeutic drugs that specifically target these signaling pathways and paramount targets, covering both preclinical studies and clinical trials. In addition, this review provides a detailed description of the crosstalk and function between signaling pathways and vital targets, which provides more opportunities for the clinical development of new treatments for sepsis.
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Affiliation(s)
- Wendan Zhang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Faculty of PediatricsNational Engineering Laboratory for Birth defects prevention and control of key technologyBeijing Key Laboratory of Pediatric Organ Failurethe Chinese PLA General HospitalBeijingChina
| | - Honghong Jiang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Faculty of PediatricsNational Engineering Laboratory for Birth defects prevention and control of key technologyBeijing Key Laboratory of Pediatric Organ Failurethe Chinese PLA General HospitalBeijingChina
| | - Gaosong Wu
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Pengli Huang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Haonan Wang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Huazhasng An
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational MedicineThe First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan HospitalJinanShandongChina
| | - Sanhong Liu
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
| | - Weidong Zhang
- Shanghai Frontiers Science Center of TCM Chemical BiologyInstitute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghaiChina
- Department of PhytochemistrySchool of PharmacySecond Military Medical UniversityShanghaiChina
- The Research Center for Traditional Chinese MedicineShanghai Institute of Infectious Diseases and BiosecurityShanghai University of Traditional Chinese MedicineShanghaiChina
- Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
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32
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Lv J, Zhu X, Xing C, Chen Y, Bian H, Yin H, Gu X, Su L. Stimulator of interferon genes (STING): Key therapeutic targets in ischemia/reperfusion injury. Biomed Pharmacother 2023; 167:115458. [PMID: 37699319 DOI: 10.1016/j.biopha.2023.115458] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/25/2023] [Accepted: 09/05/2023] [Indexed: 09/14/2023] Open
Abstract
The Stimulator of Interferon Genes (STING) is predominantly expressed in immune cells, including macrophages, natural killer cells, dendritic cells, and T cells, functioning as a pattern recognition receptor. STING activation upon detecting cytosolic DNA released from damaged cells initiates downstream pathways, leading to the production of inflammatory cytokines such as IFNs, IL-6, and TNF-α. Dysregulated STING activation has been implicated in inflammatory and metabolic diseases. Ischemia/reperfusion injury (I/RI) is common in stroke, acute myocardial infarction, organ transplantation, and surgeries for certain end-stage diseases. Recent studies suggest that STING could be a novel therapeutic target for I/RI treatment. In this review, we provide a concise overview of the cGAS-STING signaling pathway's general functions and summarize STING's role in I/RI across various organs, including the heart, liver, kidney, and lung. Moreover, we explore potential therapeutic approaches for I/RI by targeting STING.
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Affiliation(s)
- Juan Lv
- Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, China; Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Xuanxuan Zhu
- Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, China
| | - Chunlei Xing
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Yuhong Chen
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Huihui Bian
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
| | - Heng Yin
- Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, China.
| | - Xiaofeng Gu
- Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, China.
| | - Li Su
- Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi 214071, China; Institute of Translational Medicine, Shanghai University, Shanghai 200444, China.
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Yazici D, Cagan E, Tan G, Li M, Do E, Kucukkase OC, Simsek A, Kizmaz MA, Bozkurt T, Aydin T, Heider A, Rückert B, Brüggen MC, Dhir R, O'Mahony L, Akdis M, Nadeau KC, Budak F, Akdis CA, Ogulur I. Disrupted epithelial permeability as a predictor of severe COVID-19 development. Allergy 2023; 78:2644-2658. [PMID: 37422701 DOI: 10.1111/all.15800] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/24/2023] [Accepted: 06/12/2023] [Indexed: 07/10/2023]
Abstract
BACKGROUND An impaired epithelial barrier integrity in the gastrointestinal tract is important to the pathogenesis of many inflammatory diseases. Accordingly, we assessed the potential of biomarkers of epithelial barrier dysfunction as predictive of severe COVID-19. METHODS Levels of bacterial DNA and zonulin family peptides (ZFP) as markers of bacterial translocation and intestinal permeability and a total of 180 immune and inflammatory proteins were analyzed from the sera of 328 COVID-19 patients and 49 healthy controls. RESULTS Significantly high levels of circulating bacterial DNA were detected in severe COVID-19 cases. In mild COVID-19 cases, serum bacterial DNA levels were significantly lower than in healthy controls suggesting epithelial barrier tightness as a predictor of a mild disease course. COVID-19 patients were characterized by significantly elevated levels of circulating ZFP. We identified 36 proteins as potential early biomarkers of COVID-19, and six of them (AREG, AXIN1, CLEC4C, CXCL10, CXCL11, and TRANCE) correlated strongly with bacterial translocation and can be used to predict and discriminate severe cases from healthy controls and mild cases (area under the curve (AUC): 1 and 0.88, respectively). Proteomic analysis of the serum of 21 patients with moderate disease at admission which progressed to severe disease revealed 10 proteins associated with disease progression and mortality (AUC: 0.88), including CLEC7A, EIF4EBP1, TRANCE, CXCL10, HGF, KRT19, LAMP3, CKAP4, CXADR, and ITGB6. CONCLUSION Our results demonstrate that biomarkers of intact or defective epithelial barriers are associated with disease severity and can provide early information on the prediction at the time of hospital admission.
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Affiliation(s)
- Duygu Yazici
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Eren Cagan
- Department of Immunology, Bursa Uludag University School of Medicine, Bursa, Turkey
- Department of Pediatric Infectious Diseases, Bursa Yuksek Ihtisas Training and Research Hospital, University of Health Sciences, Bursa, Turkey
| | - Ge Tan
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Manru Li
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Evan Do
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, California, USA
| | - Ozan C Kucukkase
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Abdurrahman Simsek
- Department of Immunology, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - Muhammed Ali Kizmaz
- Department of Immunology, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - Tugce Bozkurt
- Department of Immunology, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - Tamer Aydin
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Anja Heider
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Beate Rückert
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Marie-Charlotte Brüggen
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
- Faculty of Medicine, University of Zurich, Zurich, Switzerland
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Raja Dhir
- SEED Inc. Co., Los Angeles, California, USA
| | - Liam O'Mahony
- Department of Medicine and School of Microbiology, University College Cork, Cork, Ireland
- APC Microbiome Ireland, Cork, Ireland
| | - Mubeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Kari C Nadeau
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Ferah Budak
- Department of Immunology, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Ismail Ogulur
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
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Kobritz M, Nofi C, Sfakianos M, Coppa G, Aziz M, Wang P. Targeting sting to reduce sepsis-induced acute intestinal injury. Surgery 2023; 174:1071-1077. [PMID: 37517896 PMCID: PMC10529857 DOI: 10.1016/j.surg.2023.06.032] [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: 03/28/2023] [Revised: 06/08/2023] [Accepted: 06/18/2023] [Indexed: 08/01/2023]
Abstract
BACKGROUND Sepsis is a dysregulated host response to infection syndrome leading to life-threatening organ dysfunction. Sepsis-induced intestinal dysfunction is a key element in the progression to multisystem organ failure. The stimulator of interferon genes is an intracellular protein implicated in intestinal injury in sepsis. H151, a small molecule inhibitor of stimulator of interferon genes, has not yet been studied as a potential therapeutic in sepsis. We hypothesize that H151 therapeutically reduces sepsis-induced acute intestinal injury. METHODS Male mice underwent cecal ligation and puncture and were treated with intraperitoneal H151 (10 mg/kg body weight) or vehicle. Intestines and serum were collected for analysis 20 hours after cecal ligation and puncture. Oral gavage of mice with FITC-dextran was performed 15 hours after cecal ligation and puncture. Five hours after gavage, serum was collected, and intestinal permeability was assessed. Mice were monitored for 10 days after cecal ligation and puncture to assess survival. RESULTS Zonula occludens 1 tight junctional protein expression was reduced after cecal ligation and puncture and recovered with H151 treatment. This was associated with a 62.3% reduction in intestinal permeability as assessed by fluorimetry. After cecal ligation and puncture, treatment with H151 was associated with a 58.7% reduction in intestinal histopathologic injury (P < .05) and a 56.6% reduction in intestinal apoptosis (P < .05). Intestinal myeloperoxidase activity was decreased by 70.8% after H151 treatment (P < .05). Finally, H151 improved 10-day survival from 33% to 80% after cecal ligation and puncture (P = .011). CONCLUSION H151, a novel stimulator of interferon genes inhibitor, reduces intestinal injury, inflammation, and permeability when administered as a treatment for cecal ligation and puncture-induced sepsis. Thus, targeting stimulator of interferon genes shows promise as a therapeutic strategy to ameliorate sepsis-induced acute intestinal injury.
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Affiliation(s)
- Molly Kobritz
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Colleen Nofi
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Maria Sfakianos
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
| | - Gene Coppa
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
| | - Monowar Aziz
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Ping Wang
- Department of Surgery, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA
- Center for Immunology and Inflammation, The Feinstein Institutes for Medical Research, Manhasset, New York, USA
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35
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Peng Y, Li Y, Yang Y, Shi T, Liu R, Luan Y, Yin C. The Role and Potential Regulatory Mechanism of STING Modulated Macrophage Apoptosis and Differentiation in Severe Acute Pancreatitis-Associated Lung Injury. J Interferon Cytokine Res 2023; 43:455-468. [PMID: 37819622 DOI: 10.1089/jir.2023.0077] [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] [Indexed: 10/13/2023] Open
Abstract
This study aims to investigate the role of STING in promoting macrophage apoptosis and regulating macrophage polarization in severe acute pancreatitis (SAP)-associated lung injury in vitro and in vivo. A murine model was established by intraperitoneal injection of caerulein and lipopolysaccharide (LPS). Meanwhile, ANA-1 cells were stimulated with LPS to induce apoptosis in vitro. More primary alveolar macrophages underwent apoptosis and M1 macrophage polarization in the SAP group compared with the control group, which was reversed by inhibiting STING. When ANA-1 cells were induced into M2-type macrophages, the reduction of M1 macrophage markers was accompanied by a decrease of LPS-induced apoptosis. Finally, the inhibitory effect of C-176 on STING ameliorates lung injury and inflammation by adjusting macrophage polarization and rescuing apoptosis. Therefore, inhibiting STING could be a new therapeutic strategy for treating acute pancreatitis-associated lung injury.
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Affiliation(s)
- Yiqiu Peng
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yingying Li
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yuxi Yang
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Tingjuan Shi
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Ruixia Liu
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yingyi Luan
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Chenghong Yin
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
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Wang X, Chen G, Du Y, Yang J, Wang W. Transcription Factor Sox9 Exacerbates Kidney Injury through Inhibition of MicroRNA-96-5p and Activation of the Trib3/IL-6 Axis. Kidney Blood Press Res 2023; 48:611-627. [PMID: 37717559 PMCID: PMC10614512 DOI: 10.1159/000533544] [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: 03/30/2023] [Accepted: 08/08/2023] [Indexed: 09/19/2023] Open
Abstract
INTRODUCTION Our study investigated the possible mechanisms of the role of the transcription factor Sox9 in the development and progression of kidney injury through regulation of the miR-96-5p/Trib3/IL-6 axis. METHODS Bioinformatics analysis was performed to identify differentially expressed genes in kidney injury and normal tissues. An in vivo animal model of kidney injury and an in vitro cellular model of kidney injury were constructed using LPS induction in 8-week-old female C57BL/6 mice and human normal renal tubular epithelial cells HK-2 for studying the possible roles of Sox9, miR-96-5p, Trib3, and IL-6 in kidney injury. RESULTS Sox9 was highly expressed in both mouse and cellular models of kidney injury. Sox9 was significantly enriched in the promoter region of miR-96-5p and repressed miR-96-5p expression. Trib3 was highly expressed in both mouse and cellular models of kidney injury and promoted inflammatory responses and kidney injury. In addition, Trib3 promoted IL-6 expression, which was highly expressed in kidney injury, and promoted the inflammatory response and extent of injury in kidney tissue. In vivo and in vitro experiments confirmed that the knockdown of Sox9 improved the inflammatory response and fibrosis of mouse kidney tissues and HK-2 cells, while the ameliorative effect of silencing Sox9 was inhibited by overexpression of IL-6. CONCLUSION Collectively, Sox9 up-regulates miR-96-5p-mediated Trib3 and activates the IL-6 signaling pathway to exacerbate the inflammatory response, ultimately promoting the development and progression of kidney injury.
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Affiliation(s)
- Xiao Wang
- Department of Urology, Fuyang People’s Hospital, Anhui Medical University, Fuyang, China
| | - Guang Chen
- Department of Urology, Fuyang People’s Hospital, Anhui Medical University, Fuyang, China
| | - Yongqiang Du
- Department of Urology, Fuyang People’s Hospital, Anhui Medical University, Fuyang, China
| | - Jiajia Yang
- Department of Urology, Fuyang People’s Hospital, Anhui Medical University, Fuyang, China
| | - Wei Wang
- Department of Urology, First Affiliated Hospital of Anhui Medical University, Hefei, China
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Yang Y, Wang L, Peugnet-González I, Parada-Venegas D, Dijkstra G, Faber KN. cGAS-STING signaling pathway in intestinal homeostasis and diseases. Front Immunol 2023; 14:1239142. [PMID: 37781354 PMCID: PMC10538549 DOI: 10.3389/fimmu.2023.1239142] [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: 06/12/2023] [Accepted: 08/18/2023] [Indexed: 10/03/2023] Open
Abstract
The intestinal mucosa is constantly exposed to commensal microbes, opportunistic pathogens, toxins, luminal components and other environmental stimuli. The intestinal mucosa consists of multiple differentiated cellular and extracellular components that form a critical barrier, but is also equipped for efficient absorption of nutrients. Combination of genetic susceptibility and environmental factors are known as critical components involved in the pathogenesis of intestinal diseases. The innate immune system plays a critical role in the recognition and elimination of potential threats by detecting pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs). This host defense is facilitated by pattern recognition receptors (PRRs), in which the cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway has gained attention due to its role in sensing host and foreign double-stranded DNA (dsDNA) as well as cyclic dinucleotides (CDNs) produced by bacteria. Upon binding with dsDNA, cGAS converts ATP and GTP to cyclic GMP-AMP (cGAMP), which binds to STING and activates TANK binding kinase 1 (TBK1) and interferon regulatory factor 3 (IRF3), inducing type I interferon (IFN) and nuclear factor kappa B (NF-κB)-mediated pro-inflammatory cytokines, which have diverse effects on innate and adaptive immune cells and intestinal epithelial cells (IECs). However, opposite perspectives exist regarding the role of the cGAS-STING pathway in different intestinal diseases. Activation of cGAS-STING signaling is associated with worse clinical outcomes in inflammation-associated diseases, while it also plays a critical role in protection against tumorigenesis and certain infections. Therefore, understanding the context-dependent mechanisms of the cGAS-STING pathway in the physiopathology of the intestinal mucosa is crucial for developing therapeutic strategies targeting the cGAS-STING pathway. This review aims to provide insight into recent findings of the protective and detrimental roles of the cGAS-STING pathway in intestinal diseases.
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Affiliation(s)
- Yuchen Yang
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Li Wang
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Ivonne Peugnet-González
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Daniela Parada-Venegas
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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Liu Y, Pu F. Updated roles of cGAS-STING signaling in autoimmune diseases. Front Immunol 2023; 14:1254915. [PMID: 37781360 PMCID: PMC10538533 DOI: 10.3389/fimmu.2023.1254915] [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: 07/07/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Natural immunity, the first line for the body to defense against the invasion of pathogen, serves as the body's perception of the presence of pathogens depends on nucleic acid recognition mechanisms. The cyclic GMP-AMP synthase-stimulator of the interferon gene (cGAS-STING) signaling pathway is considered an essential pattern recognition and effector pathway in the natural immune system and is mainly responsible for recognizing DNA molecules present in the cytoplasm and activating downstream signaling pathways to generate type I interferons and some other inflammatory factors. STING, a crucial junction protein in the innate immune system, exerts an essential role in host resistance to external pathogen invasion. Also, STING, with the same character of inflammatory molecules, is inseparable from the body's inflammatory response. In particular, when the expression of STING is upregulated or its related signaling pathways are overactivated, the body may develop serious infectious disorders due to the generation of excessive inflammatory responses, non-infectious diseases, and autoimmune diseases. In recent years, accumulating studies indicated that the abnormal activation of the natural immune cGAS-STING signaling pathway modulated by the nucleic acid receptor cGAS closely associated with the development and occurrence of autoimmune diseases (AID). Thereof, to explore an in-depth role of STING and its related signaling pathways in the diseases associated with inflammation may be helpful to provide new avenues for the treatment of these diseases in the clinic. This article reviews the activation process of the cGAS-STING signaling pathways and its related important roles, and therapeutic drugs in AID, aiming to improve our understanding of AID and achieve better diagnosis and treatment of AID.
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Affiliation(s)
- Ya Liu
- Department of Rheumatology and Immunology, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Hubei Key Laboratory of Skin Infection and Immunity, Wuhan No.1 Hospital, Wuhan, Hubei, China
| | - Feifei Pu
- Hubei Key Laboratory of Skin Infection and Immunity, Wuhan No.1 Hospital, Wuhan, Hubei, China
- Department of Orthopedics, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Ribeiro MDC, Cho Y, Mehta J, Wang X, Babuta M, Copeland C, Hussein H, Catalano D, Wang Y, Szabo G. Protective role of cGAS in NASH is related to the maintenance of intestinal homeostasis. Liver Int 2023; 43:1937-1949. [PMID: 37222257 PMCID: PMC10524793 DOI: 10.1111/liv.15610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/11/2023] [Indexed: 05/25/2023]
Abstract
BACKGROUND & AIMS Various intracellular pathways regulate inflammation in NASH. Cyclic GMP-AMP synthase (cGAS) is a DNA sensor that activates STING and plays a role in inflammatory diseases. Here, we explored the role of cGAS in hepatic damage, steatosis, inflammation, and liver fibrosis in mouse models of NASH. METHODS cGAS deficient (cGAS-KO) and STING deficient (STING-KO) mice received high fat-high cholesterol-high sugar diet (HF-HC-HSD) or relevant control diets. Livers were evaluated after 16 or 30 weeks. RESULTS HF-HC-HSD diet, both at 16 and 30 weeks, resulted in increased cGAS protein expression as well as in increased ALT, IL-1β, TNF-α and MCP-1 in wild-type (WT) mice compared to controls. Surprisingly, liver injury, triglyceride accumulation, and inflammasome activation were greater in HF-HC-HSD cGAS-KO compared to WT mice at 16 and to a lesser extent at 30 weeks. STING, a downstream target of cGAS was significantly increased in WT mice after HF-HC-HSD. In STING-KO mice after HF-HC-HSD feeding, we found increased ALT and attenuated MCP1 and IL-1β expression compared to WT mice. Markers of liver fibrosis were increased in cGAS- and STING-KO mice compared to WT on HF-HC-HSD. We discovered that cGAS-KO mice had a significant increase in circulating endotoxin levels on HF-HC-HSD that correlated with changes in intestinal morphology which was exacerbated by HF-HC-HSD compared to WT mice. CONCLUSION Our findings indicate that cGAS or STING deficiency exacerbate liver damage, steatosis, and inflammation in HF-HC-HSD diet-induced NASH, which might be linked to the disruption of the gut barrier.
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Affiliation(s)
- Marcelle de Carvalho Ribeiro
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Yeonhee Cho
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Jeeval Mehta
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Xiaojing Wang
- Department and institute of infectious diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Mrigya Babuta
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Christopher Copeland
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Hosni Hussein
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
- Department of Microbiology, Faculty of Science, Al Azhar University, Assiut 71524, Egypt
| | - Donna Catalano
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Yanbo Wang
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
| | - Gyongyi Szabo
- Department of Medicine, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA
- Broad Institute of MIT and Harvard; MA 02142, USA
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Gao J, Cao B, Zhao R, Li H, Xu Q, Wei B. Critical Signaling Transduction Pathways and Intestinal Barrier: Implications for Pathophysiology and Therapeutics. Pharmaceuticals (Basel) 2023; 16:1216. [PMID: 37765024 PMCID: PMC10537644 DOI: 10.3390/ph16091216] [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: 07/16/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
The intestinal barrier is a sum of the functions and structures consisting of the intestinal mucosal epithelium, mucus, intestinal flora, secretory immunoglobulins, and digestive juices. It is the first-line defense mechanism that resists nonspecific infections with powerful functions that include physical, endocrine, and immune defenses. Health and physiological homeostasis are greatly dependent on the sturdiness of the intestinal barrier shield, whose dysfunction can contribute to the progression of numerous types of intestinal diseases. Disorders of internal homeostasis may also induce barrier impairment and form vicious cycles during the response to diseases. Therefore, the identification of the underlying mechanisms involved in intestinal barrier function and the development of effective drugs targeting its damage have become popular research topics. Evidence has shown that multiple signaling pathways and corresponding critical molecules are extensively involved in the regulation of the barrier pathophysiological state. Ectopic expression or activation of signaling pathways plays an essential role in the process of shield destruction. Although some drugs, such as molecular or signaling inhibitors, are currently used for the treatment of intestinal diseases, their efficacy cannot meet current medical requirements. In this review, we summarize the current achievements in research on the relationships between the intestinal barrier and signaling pathways. The limitations and future perspectives are also discussed to provide new horizons for targeted therapies for restoring intestinal barrier function that have translational potential.
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Affiliation(s)
- Jingwang Gao
- Department of General Surgery, Medical School of Chinese PLA, Beijing 100853, China; (J.G.); (R.Z.); (H.L.); (Q.X.)
- Department of General Surgery, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;
| | - Bo Cao
- Department of General Surgery, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;
| | - Ruiyang Zhao
- Department of General Surgery, Medical School of Chinese PLA, Beijing 100853, China; (J.G.); (R.Z.); (H.L.); (Q.X.)
- Department of General Surgery, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;
| | - Hanghang Li
- Department of General Surgery, Medical School of Chinese PLA, Beijing 100853, China; (J.G.); (R.Z.); (H.L.); (Q.X.)
- Department of General Surgery, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;
| | - Qixuan Xu
- Department of General Surgery, Medical School of Chinese PLA, Beijing 100853, China; (J.G.); (R.Z.); (H.L.); (Q.X.)
- Department of General Surgery, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;
| | - Bo Wei
- Department of General Surgery, Medical School of Chinese PLA, Beijing 100853, China; (J.G.); (R.Z.); (H.L.); (Q.X.)
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Zhu S, Yu Y, Qu M, Qiu Z, Zhang H, Miao C, Guo K. Neutrophil extracellular traps contribute to immunothrombosis formation via the STING pathway in sepsis-associated lung injury. Cell Death Discov 2023; 9:315. [PMID: 37626060 PMCID: PMC10457383 DOI: 10.1038/s41420-023-01614-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 08/04/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Neutrophil extracellular traps (NETs) are involved in the activation and dysfunction of multiple overlapping and interacting pathways, including the immune response to injury, inflammation, and coagulation, which contribute to the pathogenesis of sepsis-induced acute lung injury (SI-ALI). However, how NETs mediate the relationship between inflammation and coagulation has not been fully clarified. Here, we found that NETs, through stimulator of interferon genes (STING) activation, induced endothelial cell damage with abundant production of tissue factor (TF), which magnified the dysregulation between inflammatory and coagulant responses and resulted in poor prognosis of SI-ALI model mice. Disruption of NETs and inhibition of STING improved the outcomes of septic mice and reduced the inflammatory response and coagulation. Furthermore, Toll-like receptor 2 (TLR2) on the surface of endothelial cells was involved in the interaction between NETs and the STING pathway. Collectively, these findings demonstrate that NETs activate the coagulant cascade in endothelial cells in a STING-dependent manner in the development of SI-ALI.
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Affiliation(s)
- Shuainan Zhu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Ying Yu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Mengdi Qu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Zhiyun Qiu
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China
| | - Hao Zhang
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
| | - Changhong Miao
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
| | - Kefang Guo
- Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China.
- Shanghai Key Laboratory of Perioperative Stress and Protection, Shanghai, China.
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Jin X, Wang W, Zhao X, Jiang W, Shao Q, Chen Z, Huang C. The battle between the innate immune cGAS-STING signaling pathway and human herpesvirus infection. Front Immunol 2023; 14:1235590. [PMID: 37600809 PMCID: PMC10433641 DOI: 10.3389/fimmu.2023.1235590] [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: 06/06/2023] [Accepted: 07/21/2023] [Indexed: 08/22/2023] Open
Abstract
The incidence of human herpesvirus (HHVs) is gradually increasing and has affected a wide range of population. HHVs can result in serious consequences such as tumors, neonatal malformations, sexually transmitted diseases, as well as pose an immense threat to the human health. The cGAS-STING pathway is one of the innate immune pattern-recognition receptors discovered recently. This article discusses the role of the cGAS-STING pathway in human diseases, especially in human herpesvirus infections, as well as highlights how these viruses act on this pathway to evade the host immunity. Moreover, the author provides a comprehensive overview of modulators of the cGAS-STING pathway. By focusing on the small molecule compounds based on the cGAS-STING pathway, novel targets and concepts have been proposed for the development of antiviral drugs and vaccines, while also providing a reference for the investigation of disease models related to the cGAS-STING pathway. HHV is a double-stranded DNA virus that can trigger the activation of intracellular DNA sensor cGAS, after which the host cells initiate a cascade of reactions that culminate in the secretion of type I interferon to restrict the viral replication. Meanwhile, the viral protein can interact with various molecules in the cGAS-STING pathway. Viruses can evade immune surveillance and maintain their replication by inhibiting the enzyme activity of cGAS and reducing the phosphorylation levels of STING, TBK1 and IRF3 and suppressing the interferon gene activation. Activators and inhibitors of the cGAS-STING pathway have yielded numerous promising research findings in vitro and in vivo pertaining to cGAS/STING-related disease models. However, there remains a dearth of small molecule modulators that have been successfully translated into clinical applications, which serves as a hurdle to be overcome in the future.
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Affiliation(s)
- Ximing Jin
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenjia Wang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinwei Zhao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenhua Jiang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhuo Chen
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cong Huang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Hua Z, Wang Y, Chen W, Li W, Shen J. Emodin protects against intestinal dysfunction and enhances survival in rat model of septic peritonitis through anti-inflammatory actions. Immun Inflamm Dis 2023; 11:e942. [PMID: 37647455 PMCID: PMC10461418 DOI: 10.1002/iid3.942] [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: 04/25/2023] [Revised: 06/27/2023] [Accepted: 07/06/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Sepsis is a significant contributor to organ function damage or failure that results in intestinal dysfunction. Emodin (Emo) has received much attention for its notable anti-inflammatory and antibacterial properties. We aimed to explore the function of Emo on sepsis. METHODS Sprague Dawley (SD) rats were pretreated with 20 or 40 mg/kg of Emo, followed by using cecal ligation and perforation to establish sepsis models. Hereafter, blood glucose levels, biochemical parameters, and inflammatory cytokines were measured. Additionally, ileal myeloperoxidase (MPO) activity was also measured. Diamine oxidase (DAO) level in plasma, fluorescein isothiocyanate-dextran 40 (FD-40) level in serum, bacteria number in blood and peritoneal fluid, histopathological changes of ileum, and tight junction (TJ) protein expressions in ileum were tested to evaluate the barrier function. Furthermore, CD4+ and CD8+ T cells' percentages were evaluated by flow cytometry. Finally, rats' survival rate was calculated as live rats divided by the total number of rats. RESULTS Emo pretreatment not only decreased blood glucose level, but also downregulated triglyceride (TG), alanine aminotransferase (ALT), aspartate aminotransferase (AST), serum creatinine (SCr), blood urea nitrogen (BUN) contents for sepsis rats, especially for the high dose of Emo (p < .05). Furthermore, Emo inhibited MPO activity and inflammatory factor release (p < .05). Crucially, after Emo administration, the barrier function of ileum was enhanced, evidenced by the reduced DAO, FD-40 levels, decreased bacteria number, alleviated pathological damage in ileum and increased TJ protein expressions (p < .05). Rats treated with Emo exhibited increased percentages of CD8+ and CD4+ T cells (p < .05), as well as an improved survival rate. CONCLUSION Emo exhibited a remarkable ability to attenuate sepsis by restoring intestinal dysfunction and improving survival rates, and the mechanism was closely related to anti-inflammatory properties, which provided new solid evidence for the use of Emo in treating sepsis.
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Affiliation(s)
- Zhongjie Hua
- Department of Emergency MedicineThe First People's Hospital of PinghuPinghuZhejiangChina
| | - Yaqin Wang
- Department of Emergency MedicineThe First People's Hospital of PinghuPinghuZhejiangChina
| | - Weiping Chen
- Department of Emergency MedicineThe First People's Hospital of PinghuPinghuZhejiangChina
| | - Wei Li
- Department of Emergency MedicineThe First People's Hospital of PinghuPinghuZhejiangChina
| | - Jiali Shen
- Department of Emergency MedicineThe First People's Hospital of PinghuPinghuZhejiangChina
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Chen Y, Bian H, Lv J, Song W, Xing C, Hui C, Zhang D, Zhang C, Zhao L, Li Y, Su L. Gelsevirine is a novel STING-specific inhibitor and mitigates STING-related inflammation in sepsis. Front Immunol 2023; 14:1190707. [PMID: 37583703 PMCID: PMC10424845 DOI: 10.3389/fimmu.2023.1190707] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 07/13/2023] [Indexed: 08/17/2023] Open
Abstract
Background Stimulation of IFN genes (STING) is central to the production of interferon and proinflammatory cytokines in response to microbial DNA or self-DNA in the cytosol. The detrimental role of the activation of STING during sepsis has been well documented. Methods Here, we found that gelsevirine (GS) potently inhibit interferon and inflammatory cytokine induction in macrophages exposed to STING agonists (2'3'-cGAMP, IFN stimulatory DNA (ISD), and poly(dA:dT)). I n silico docking analysis and surface plasmon resonance binding study showed that GS bonds with high affinity to the cyclic dinucleotide (CDN)-binding pocket of STING. Biotin pull-down assay also confirmed that GS competitively bonded to STING protein. Furthermore, GS inhibited 2'3'-cGAMP-induced STING dimerization and subsequent activation. In addition, GS induced K48-linked STING ubiquitination and degradation, which was likely through upregulating and recruiting TRIM21. In mice exposed to cecal ligation and puncture (CLP)-induced sepsis, post-operative administration of GS significantly extended the survival period and mitigated acute organ damage. Results Overall, GS inhibited STING signaling by competitively binding to the CDN-binding pocket to lock STING in an inactive open conformation, while also promoting K48-linked STING ubiquitination and degradation. Conclusions Our findings identify a novel STING-specific inhibitor that could be applied in the treatment of sepsis.
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Affiliation(s)
- Yuhong Chen
- School of Pharmacy, Bengbu Medical College, Bengbu, China
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Huihui Bian
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Juan Lv
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Wanxue Song
- Department of Anesthesiology, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Chunlei Xing
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Chunlei Hui
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Dinglei Zhang
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Chenxi Zhang
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Liang Zhao
- Luodian Clinical Drug Research Center, Institute for Translational Medicine Research, Shanghai University, Shanghai, China
- Department of Pharmacy, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Yingke Li
- Department of Anesthesiology, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Li Su
- School of Pharmacy, Bengbu Medical College, Bengbu, China
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- Luodian Clinical Drug Research Center, Institute for Translational Medicine Research, Shanghai University, Shanghai, China
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45
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Chauvin SD, Stinson WA, Platt DJ, Poddar S, Miner JJ. Regulation of cGAS and STING signaling during inflammation and infection. J Biol Chem 2023; 299:104866. [PMID: 37247757 PMCID: PMC10316007 DOI: 10.1016/j.jbc.2023.104866] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/31/2023] Open
Abstract
Stimulator of interferon genes (STING) is a sensor of cyclic dinucleotides including cyclic GMP-AMP, which is produced by cyclic GMP-AMP synthase (cGAS) in response to cytosolic DNA. The cGAS-STING signaling pathway regulates both innate and adaptive immune responses, as well as fundamental cellular functions such as autophagy, senescence, and apoptosis. Mutations leading to constitutive activation of STING cause devastating human diseases. Thus, the cGAS-STING pathway is of great interest because of its role in diverse cellular processes and because of the potential therapeutic implications of targeting cGAS and STING. Here, we review molecular and cellular mechanisms of STING signaling, and we propose a framework for understanding the immunological and other cellular functions of STING in the context of disease.
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Affiliation(s)
- Samuel D Chauvin
- Departments of Medicine and Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - W Alexander Stinson
- Departments of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri, USA
| | - Derek J Platt
- Department Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, USA
| | - Subhajit Poddar
- Departments of Medicine and Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Jonathan J Miner
- Departments of Medicine and Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; Departments of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri, USA; Department Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, USA; Department of Medicine, Washington University School of Medicine, Saint Louis, Missouri, USA.
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46
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Geng K, Ma X, Jiang Z, Huang W, Gu J, Wang P, Luo L, Xu Y, Xu Y. High glucose-induced STING activation inhibits diabetic wound healing through promoting M1 polarization of macrophages. Cell Death Discov 2023; 9:136. [PMID: 37100799 PMCID: PMC10133226 DOI: 10.1038/s41420-023-01425-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/22/2023] [Accepted: 04/03/2023] [Indexed: 04/28/2023] Open
Abstract
Diabetic wound (DW) is characterized by elevated pro-inflammatory cytokines and cellular dysfunction consistent with elevated reactive oxygen species (ROS) levels. Recent advances in immunology have dissected molecular pathways involved in the innate immune system where cytoplasmic DNA can trigger STING-dependent inflammatory responses and play an important role in metabolic-related diseases. We investigated whether STING regulates inflammation and cellular dysfunction in DW healing. We found that STING and M1 macrophages were increased in wound tissues from DW in patients and mice and delayed the wound closure. We also noticed that the massively released ROS in the High glucose (HG) environment activated STING signaling by inducing the escape of mtDNA to the cytoplasm, inducing macrophage polarization into a pro-inflammatory phenotype, releasing pro-inflammatory cytokines, and exacerbating endothelial cell dysfunction. In Conclusion, mtDNA-cGAS-STING pathway activation under diabetic metabolic stress is an important mechanism of DW refractory healing. While using STING gene-edited macrophages for wound treatment by cell therapy can induce the polarization of wound macrophages from pro-inflammatory M1 to anti-inflammatory M2, promote angiogenesis, and collagen deposition to accelerate DW healing. STING may be a promising therapeutic target for DW.
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Affiliation(s)
- Kang Geng
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
- Department of plastic and burns surgery, National Key Clinical Construction Specialty, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, PR China
| | - Xiumei Ma
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
| | - Zongzhe Jiang
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
| | - Wei Huang
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
| | - Junling Gu
- Endocrinology Department, The Second People's Hospital of Yibin‧West China Yibin Hospital, Sichuan University, Yibin, Sichuan, PR China
| | - Peng Wang
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
| | - Lifang Luo
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China
| | - Youhua Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao.
| | - Yong Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao.
- Department of Endocrinology and Metabolism, Metabolic Vascular Disease Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Nephropathy, Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, Sichuan, PR China.
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47
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Horowitz A, Chanez-Paredes SD, Haest X, Turner JR. Paracellular permeability and tight junction regulation in gut health and disease. Nat Rev Gastroenterol Hepatol 2023:10.1038/s41575-023-00766-3. [PMID: 37186118 PMCID: PMC10127193 DOI: 10.1038/s41575-023-00766-3] [Citation(s) in RCA: 126] [Impact Index Per Article: 126.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/03/2023] [Indexed: 05/17/2023]
Abstract
Epithelial tight junctions define the paracellular permeability of the intestinal barrier. Molecules can cross the tight junctions via two distinct size-selective and charge-selective paracellular pathways: the pore pathway and the leak pathway. These can be distinguished by their selectivities and differential regulation by immune cells. However, permeability increases measured in most studies are secondary to epithelial damage, which allows non-selective flux via the unrestricted pathway. Restoration of increased unrestricted pathway permeability requires mucosal healing. By contrast, tight junction barrier loss can be reversed by targeted interventions. Specific approaches are needed to restore pore pathway or leak pathway permeability increases. Recent studies have used preclinical disease models to demonstrate the potential of pore pathway or leak pathway barrier restoration in disease. In this Review, we focus on the two paracellular flux pathways that are dependent on the tight junction. We discuss the latest evidence that highlights tight junction components, structures and regulatory mechanisms, their impact on gut health and disease, and opportunities for therapeutic intervention.
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Affiliation(s)
- Arie Horowitz
- UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, Normandie University, Rouen, France
| | - Sandra D Chanez-Paredes
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Xenia Haest
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jerrold R Turner
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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48
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Balasubramaniam A, Srinivasan S. Role of stimulator of interferon genes (STING) in the enteric nervous system in health and disease. Neurogastroenterol Motil 2023:e14603. [PMID: 37094068 DOI: 10.1111/nmo.14603] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/26/2023]
Abstract
Stimulator of Interferon Genes (STING) is a crucial protein that controls the immune system's reaction to bacterial and viral infections. As a pattern-recognition receptor, STING is found in immune cells as well as in neurons and glia in the enteric nervous system (ENS). Recent studies have linked STING to the pathogenesis of several neurological disorders like multiple sclerosis (MS), Alzheimer's disease (AD), and gastrointestinal disorders, including irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD), which are characterized by chronic inflammation and dysregulation of the enteric nervous system (ENS) in the digestive tract. STING plays a crucial role in the pathway that induces the production of interferon in response to viral infection in the central nervous system (CNS). A new study by Dharshika et al. in the current issue of Neurogastroenterology and Motility has demonstrated distinct roles for STING in enteric neurons and glia, namely activation of STING leads to IFN-β production in enteric neurons but not in glia and reducing STING activation in enteric glia does not modulate the severity of Dextran sulfate sodium (DSS) colitis or subsequent loss of enteric neurons. Rather, the role of STING in enteric glia is related to enhancing autophagy. STING can influence gastrointestinal motility and barrier function and therefore be involved in the pathophysiology of IBS and IBD. This mini review highlights the current knowledge of STING in the pathophysiology of CNS and gastrointestinal diseases as well as these newly uncovered roles STING in enteric neurons and glia.
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Affiliation(s)
- Arun Balasubramaniam
- Division of Digestive Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
- Atlanta Veterans Affairs Health Care System, Decatur, Georgia, USA
| | - Shanthi Srinivasan
- Division of Digestive Diseases, Emory University School of Medicine, Atlanta, Georgia, USA
- Atlanta Veterans Affairs Health Care System, Decatur, Georgia, USA
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49
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Lu L, Liu W, Li S, Bai M, Zhou Y, Jiang Z, Jia Z, Huang S, Zhang A, Gong W. Flavonoid derivative DMXAA attenuates cisplatin-induced acute kidney injury independent of STING signaling. Clin Sci (Lond) 2023; 137:435-452. [PMID: 36815438 DOI: 10.1042/cs20220728] [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: 11/15/2022] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 11/17/2022]
Abstract
Cisplatin-induced nephrotoxicity is the main adverse effect of cisplatin-based chemotherapy and highly limits its clinical use. DMXAA, a flavonoid derivative, is a promising vascular disrupting agent and known as an agonist of STING. Although cGAS-STING activation has been demonstrated to mediate cisplatin-induced acute kidney injury (AKI), the role of DMXAA in this condition is unclear. Here, we defined an unexpected and critical role of DMXAA in improving renal function, ameliorating renal tubular injury and cell apoptosis, and suppressing inflammation in cisplatin-induced AKI. Moreover, we confirmed that DMXAA combated AKI in a STING-independent manner, as evidenced by its protective effect in STING global knockout mice subjected to cisplatin. Furthermore, we compared the role of DMXAA with another STING agonist SR717 in cisplatin-treated mice and found that DMXAA but not SR717 protected animals against AKI. To better evaluate the role of DMXAA, we performed transcriptome analyses and observed that both inflammatory and metabolic pathways were altered by DMXAA treatment. Due to the established role of metabolic disorders in AKI, which contributes to kidney injury and recovery, we also performed metabolomics using kidney tissues from cisplatin-induced AKI mice with or without DMXAA treatment. Strikingly, our results revealed that DMXAA improved the metabolic disorders in kidneys of AKI mice, especially regulated the tryptophan metabolism. Collectively, therapeutic administration of DMXAA ameliorates cisplatin-induced AKI independent of STING, suggesting a promising potential for preventing nephrotoxicity induced by cisplatin-based chemotherapy.
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Affiliation(s)
- Lingling Lu
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Weihua Liu
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Shumin Li
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Mi Bai
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yu Zhou
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Zhaohui Jiang
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Zhanjun Jia
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Songming Huang
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Aihua Zhang
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Gong
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
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50
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Zhang X, Ning W, Gao G, Zhou Y, Duan XB, Li X, Li D, Guo R. Bazedoxifene attenuates intestinal injury in sepsis by suppressing the NF-κB/NLRP3 signaling pathways. Eur J Pharmacol 2023; 947:175681. [PMID: 36965746 DOI: 10.1016/j.ejphar.2023.175681] [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: 12/26/2022] [Revised: 03/14/2023] [Accepted: 03/22/2023] [Indexed: 03/27/2023]
Abstract
Acute inflammatory injury is the primary cause of sepsis, leading to various organ failures. Bazedoxifene (BAZ) has been proven to have anti-inflammatory effects. However, its effects on sepsis-induced intestinal injury are unclear. Here, we demonstrated the beneficial effects of BAZ on intestinal injury and explored the underlying mechanisms using cecal ligation and perforation (CLP)-mediated sepsis mouse model and in vitro cultured intestinal epithelial MODE-K cells. We found that BAZ elevated the survival rate of septic mice and attenuated CLP-triggered intestinal damage. BAZ inhibited intestinal inflammation and restored the impaired intestinal barriers in CLP mice. The mechanistic study in lipopolysaccharide (LPS)/adenosine triphosphate (ATP)-stimulated MODE-K cells showed that BAZ significantly downregulated the expression of NOD-like receptor protein 3 (NLRP3), interleukin-1β (IL-1β), caspase-1, and gasdermin D (GSDMD), and markedly reduced the phosphorylation of molecules in the nuclear factor kappa B (NF-κB) pathway. Moreover, BAZ prominently rescued the decreased viability of MODE-K cells and reduced lactate dehydrogenase (LDH) release upon LPS/ATP challenge. However, BAZ did not affect the inflammasome assembly, as evidenced by the lack of changes in ASC (apoptosis speck-like protein containing a CARD) speck formation. Our results suggest that BAZ relieves inflammation and intestinal barrier function disruption by suppressing the NF-κB/NLRP3 signaling pathways. Therefore, BAZ is a potential therapeutic candidate for treating intestinal injury in sepsis.
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Affiliation(s)
- Xiao Zhang
- Phase I Clinical Research Center, Xiangya Hospital, Central South University, Changsha, 410005, China; Laboratory Department, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Wei Ning
- Phase I Clinical Research Center, Xiangya Hospital, Central South University, Changsha, 410005, China; Laboratory Department, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Ge Gao
- Laboratory Department, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Yong Zhou
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, 410078, China
| | - Xiang-Bing Duan
- Laboratory Department, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Xin Li
- Laboratory Department, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Dai Li
- Phase I Clinical Research Center, Xiangya Hospital, Central South University, Changsha, 410005, China.
| | - Ren Guo
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, 410013, China.
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