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Liu S, Yin J, Wan D, Yin Y. The Role of Iron in Intestinal Mucus: Perspectives from Both the Host and Gut Microbiota. Adv Nutr 2024:100307. [PMID: 39341502 DOI: 10.1016/j.advnut.2024.100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 09/10/2024] [Accepted: 09/22/2024] [Indexed: 10/01/2024] Open
Abstract
Although research on the role of iron in host immunity has a history spanning decades, it is only relatively recently that attention has been directed toward the biological effects of iron on the intestinal mucus layer, prompted by an evolving understanding of the role of this material in immune defence. The mucus layer, secreted by intestinal goblet cells, covers the intestinal epithelium, and given its unique location, interactions between the host and gut microbiota, as well as among constituent microbiota, occur frequently within the mucus layer. Iron, being an essential nutrient for the vast majority of life forms, regulates immune responses from both the host and microbial perspectives. In this review, we summarize the iron metabolism of both the host and gut microbiota, and describe how iron contributes to intestinal mucosal homeostasis via the intestinal mucus layer with respect to both host and constituent gut microbiota. The findings described herein offer a new perspective on iron-mediated intestinal mucosal barrier function.
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Affiliation(s)
- Shuan Liu
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Jie Yin
- College of Animal Science and Technology, Hunan Agriculture University, Changsha 410128, China
| | - Dan Wan
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China.
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China; University of Chinese Academy of Sciences, Beijing, 101408, China.
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2
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Borlak J, Ciribilli Y, Bisio A, Selvaraj S, Inga A, Oh JH, Spanel R. The Abl1 tyrosine kinase is a key player in doxorubicin-induced cardiomyopathy and its p53/p73 cell death mediated signaling differs in atrial and ventricular cardiomyocytes. J Transl Med 2024; 22:845. [PMID: 39285385 PMCID: PMC11403941 DOI: 10.1186/s12967-024-05623-8] [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: 06/12/2024] [Accepted: 08/16/2024] [Indexed: 09/20/2024] Open
Abstract
BACKGROUND Doxorubicin is an important anticancer drug, however, elicits dose-dependently cardiomyopathy. Given its mode of action, i.e. topoisomerase inhibition and DNA damage, we investigated genetic events associated with cardiomyopathy and searched for mechanism-based possibilities to alleviate cardiotoxicity. We treated rats at clinically relevant doses of doxorubicin. Histopathology and transmission electron microscopy (TEM) defined cardiac lesions, and transcriptomics unveiled cardiomyopathy-associated gene regulations. Genomic-footprints revealed critical components of Abl1-p53-signaling, and EMSA-assays evidenced Abl1 DNA-binding activity. Gene reporter assays confirmed Abl1 activity on p53-targets while immunohistochemistry/immunofluorescence microscopy demonstrated Abl1, p53&p73 signaling. RESULTS Doxorubicin treatment caused dose-dependently toxic cardiomyopathy, and TEM evidenced damaged mitochondria and myofibrillar disarray. Surviving cardiomyocytes repressed Parkin-1 and Bnip3-mediated mitophagy, stimulated dynamin-1-like dependent mitochondrial fission and induced anti-apoptotic Bag1 signaling. Thus, we observed induced mitochondrial biogenesis. Transcriptomics discovered heterogeneity in cellular responses with minimal overlap between treatments, and the data are highly suggestive for distinct cardiomyocyte (sub)populations which differed in their resilience and reparative capacity. Genome-wide footprints revealed Abl1 and p53 enriched binding sites in doxorubicin-regulated genes, and we confirmed Abl1 DNA-binding activity in EMSA-assays. Extraordinarily, Abl1 signaling differed in the heart with highly significant regulations of Abl1, p53 and p73 in atrial cardiomyocytes. Conversely, in ventricular cardiomyocytes, Abl1 solely-modulated p53-signaling that was BAX transcription-independent. Gene reporter assays established Abl1 cofactor activity for the p53-reporter PG13-luc, and ectopic Abl1 expression stimulated p53-mediated apoptosis. CONCLUSIONS The tyrosine kinase Abl1 is of critical importance in doxorubicin induced cardiomyopathy, and we propose its inhibition as means to diminish risk of cardiotoxicity.
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Affiliation(s)
- Jürgen Borlak
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - Yari Ciribilli
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Alessandra Bisio
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Saravanakumar Selvaraj
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Alberto Inga
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Trento, Italy
| | - Jung-Hwa Oh
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Reinhard Spanel
- Centre for Pharmacology and Toxicology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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Yin Y, Wang R, Li Y, Qin W, Pan L, Yan C, Hu Y, Wang G, Ai L, Mei Q, Li L. Protection against DSS-induced colitis in mice through FcεRIα deficiency: the role of altered Lactobacillus. NPJ Biofilms Microbiomes 2024; 10:84. [PMID: 39266529 PMCID: PMC11393424 DOI: 10.1038/s41522-024-00563-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 08/27/2024] [Indexed: 09/14/2024] Open
Abstract
The role of mast cells (MCs) in ulcerative colitis (UC) development is controversial. FcεRI, the IgE high-affinity receptor, is known to activate MCs. However, its role in UC remains unclear. In our study, Anti-FcεRI showed highly diagnostic value for UC. FcεRIα knockout in mice ameliorated DSS-induced colitis in a gut microbiota-dependent manner. Increased Lactobacillus abundance in FcεRIα deficient mice showed strongly correlation with the remission of colitis. RNA sequencing indicated activation of the NLRP6 inflammasome pathway in FcεRIα knockout mice. Additionally, Lactobacillus plantarum supplementation protected against inflammatory injury and goblet cell loss, with activation of the NLRP6 inflammasome during colitis. Notably, this effect was absent when the strain is unable to produce lactic acid. In summary, colitis was mitigated in FcεRIα deficient mice, which may be attributed to the increased abundance of Lactobacillus. These findings contribute to a better understanding of the relationship between allergic reactions, microbiota, and colitis.
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Affiliation(s)
- Yue Yin
- Department of Laboratory Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruilong Wang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yanning Li
- Department of Laboratory Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenfei Qin
- School of Health Science and Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Letian Pan
- Shanghai Key Laboratory of Pancreatic Disease, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Chenyuan Yan
- Shanghai Key Laboratory of Pancreatic Disease, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Yusen Hu
- Shanghai Key Laboratory of Pancreatic Disease, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Guangqiang Wang
- School of Health Science and Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China
| | - Lianzhong Ai
- School of Health Science and Engineering, Shanghai Engineering Research Center of Food Microbiology, University of Shanghai for Science and Technology, Shanghai, China.
| | - Qixiang Mei
- Shanghai Key Laboratory of Pancreatic Disease, Shanghai JiaoTong University School of Medicine, Shanghai, China.
- Department of Gastroenterology, Shanghai General Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.
| | - Li Li
- Department of Laboratory Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Chen Y, Luo C, Li S, Liu X, Guo Y, Li Y, Wang Y, Yuan J. Selenium nanoparticles promotes intestinal development in broilers by inhibiting intestinal inflammation and NLRP3 signaling pathway compared with other selenium sources. Poult Sci 2024; 103:103958. [PMID: 38945002 PMCID: PMC11261441 DOI: 10.1016/j.psj.2024.103958] [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: 02/22/2024] [Revised: 05/25/2024] [Accepted: 06/04/2024] [Indexed: 07/02/2024] Open
Abstract
This study aimed to investigate how various selenium sources affect the intestinal health of broiler chickens. A total of 384, one-day-old Arbor Acres broilers were weighed and randomly allocated to four treatment groups. The control diet was a basal diet added with: 0.2 mg/kg Sodium Selenite (SS-control), 0.2 mg/kg Selenium nano-particles (Nano-Se), 0.2 mg/kg Selenomethionine (SeMet), and 0.2 mg/kg Selenocysteine (Sec) as the treatments. The results indicated that Nano-Se and SeMet were effective in enhancing the villus height (VH) and the villus height/crypt depth ratio (VH/CD) in the jejunum compared to (SS) (P < 0.05). The inclusion of Nano-Se into the diets increased the mRNA levels of zonula occluden-1 (ZO-1), ZO-2, Occludin, Claudin-1, and Claudin-3 compared to the SS diet (P < 0.05). The SeMet increased the levels of ZO-1 and Claudin-3 compared to the SS (P < 0.05). Moreover, SeMet upregulated the marker genes of intestinal enteroendocrine cells, stem cells, and epithelial cells compared to the SS diet (P < 0.05). However, supplementation of Nano-Se reduced the mRNA levels of interleukin 1β (IL-1β), and IL-8 and the concentration of reactive oxygen species (ROS) in the jejunum compared to the SS (P < 0.05). The Nano-Se and SeMet also increased the protein levels of CAT and SOD compared to the SS and Sec diet (P < 0.05). The number of the goblet cells and Mucin-2 (Muc2) levels were the highest in the Nano-Se group (P < 0.05). The protein expression levels of goblet cell differentiation regulator (v-myc avian myelocytomatosis viral oncogene homolog, c-Myc) were highest in the Nano-Se compared to the SS diet (P < 0.05). The Nano-Se decreased the mRNA and protein levels of NLRP3 signaling pathway-related genes compared to the SS diet (P < 0.05). In conclusion, our study demonstrated that Nano-Se and SeMet are better at improving the intestinal health of 21-day-old broilers. Additionally, Nano-Se demonstrated superior antioxidant and anti-inflammatory effects, promoting the development of intestinal goblet cells by modifying the NLRP3 signaling pathway.
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Affiliation(s)
- Yanhong Chen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Caiwei Luo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Shu Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Xingbo Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yanbing Guo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yuxin Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yuanzhi Wang
- Microbiology and Immunology Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Jianmin Yuan
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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Guo TY, Kuo WT, Tsai YS, Yu LCH, Huang CY. Glucose-Stimulated Mucus Secretion by Goblet Cells Mitigates Intestinal Barrier Dysfunction in a Rat Model of Mesenteric Ischemia/Reperfusion Injury. Curr Dev Nutr 2024; 8:104431. [PMID: 39263224 PMCID: PMC11388543 DOI: 10.1016/j.cdnut.2024.104431] [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: 05/29/2024] [Revised: 07/16/2024] [Accepted: 07/24/2024] [Indexed: 09/13/2024] Open
Abstract
Background Superior mesenteric ischemia/reperfusion (I/R) causes barrier dysfunction and facilitates bacterial translocation (BT) in the small intestine, which can even lead to systemic sepsis. Our previous research showed that luminal administration of glucose and its anaerobic glycolytic metabolites exerted cytoprotective effects on epithelial cells and ameliorated I/R-induced BT in the liver and spleen. Notably, the reduction of BT occurs over the whole intestinal tract, not only restricted in the ligated glucose-containing loop. Objectives In this study, we hypothesized that local jejunal glucose-contacting might confer on the remote intestinal epithelium regeneration potential, fortify their barrier function and goblet cell secretory activity. Methods Two 10-cm jejunal segments were isolated in Wistar rats. One segment was ligatured at both ends and infused with Krebs buffer containing 0- or 50-mM glucose (local loop), whereas the adjacent segment was left unaltered and not exposed to glucose (remote loop). The rats then underwent either a sham operation or I/R challenge by occlusion of the superior mesenteric artery for 20 min, followed by reperfusion for 1 h. Results Enteral addition of glucose in the local jejunum loop alleviated ischemia-induced barrier defects, histopathological scores, cell death, and mucosal inflammation (myeloperoxidase and inflammatory cytokine production) in the remote jejunum. After ischemia, goblet cells in the remote jejunum showed cavitation of mucin granules and low MUC2 expression. Local addition of glucose enhanced MUC2 synthesis and stimulated a jet-like mucus secretion in the remote jejunum, which was accompanied by the restoration of crypt activity. Conclusions Our results showed local enteral glucose effectively mitigates I/R-induced barrier dysfunction, suggesting that local glucose-stimulated mucus secretion by remote goblet cells may serve to mitigate mucosal inflammation and BT. We provide a more precise barrier protection role of enteral glucose upon I/R challenge, presenting new opportunities for future therapeutic potential.
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Affiliation(s)
- Ting-You Guo
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Wei-Ting Kuo
- Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Syuan Tsai
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan
- Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Linda Chia-Hui Yu
- Graduate Institute of Physiology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ching-Ying Huang
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan
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Li S, Feng W, Wu J, Cui H, Wang Y, Liang T, An J, Chen W, Guo Z, Lei H. A Narrative Review: Immunometabolic Interactions of Host-Gut Microbiota and Botanical Active Ingredients in Gastrointestinal Cancers. Int J Mol Sci 2024; 25:9096. [PMID: 39201782 PMCID: PMC11354385 DOI: 10.3390/ijms25169096] [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: 07/26/2024] [Revised: 08/16/2024] [Accepted: 08/18/2024] [Indexed: 09/03/2024] Open
Abstract
The gastrointestinal tract is where the majority of gut microbiota settles; therefore, the composition of the gut microbiota and the changes in metabolites, as well as their modulatory effects on the immune system, have a very important impact on the development of gastrointestinal diseases. The purpose of this article was to review the role of the gut microbiota in the host environment and immunometabolic system and to summarize the beneficial effects of botanical active ingredients on gastrointestinal cancer, so as to provide prospective insights for the prevention and treatment of gastrointestinal diseases. A literature search was performed on the PubMed database with the keywords "gastrointestinal cancer", "gut microbiota", "immunometabolism", "SCFAs", "bile acids", "polyamines", "tryptophan", "bacteriocins", "immune cells", "energy metabolism", "polyphenols", "polysaccharides", "alkaloids", and "triterpenes". The changes in the composition of the gut microbiota influenced gastrointestinal disorders, whereas their metabolites, such as SCFAs, bacteriocins, and botanical metabolites, could impede gastrointestinal cancers and polyamine-, tryptophan-, and bile acid-induced carcinogenic mechanisms. GPRCs, HDACs, FXRs, and AHRs were important receptor signals for the gut microbial metabolites in influencing the development of gastrointestinal cancer. Botanical active ingredients exerted positive effects on gastrointestinal cancer by influencing the composition of gut microbes and modulating immune metabolism. Gastrointestinal cancer could be ameliorated by altering the gut microbial environment, administering botanical active ingredients for treatment, and stimulating or blocking the immune metabolism signaling molecules. Despite extensive and growing research on the microbiota, it appeared to represent more of an indicator of the gut health status associated with adequate fiber intake than an autonomous causative factor in the prevention of gastrointestinal diseases. This study detailed the pathogenesis of gastrointestinal cancers and the botanical active ingredients used for their treatment in the hope of providing inspiration for research into simpler, safer, and more effective treatment pathways or therapeutic agents in the field.
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Affiliation(s)
- Shanlan Li
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Wuwen Feng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China;
| | - Jiaqi Wu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Herong Cui
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Yiting Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Tianzhen Liang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Jin An
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Wanling Chen
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Zhuoqian Guo
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
| | - Haimin Lei
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, China; (S.L.); (J.W.); (Y.W.); (T.L.); (J.A.); (W.C.); (Z.G.)
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Zhu S, Zhang X, Xu K, Liang J, Wang W, Zeng L, Xu K. Loss of NLRP6 expression increases the severity of intestinal injury after syngeneic hematopoietic stem cell transplantation. Ann Hematol 2024; 103:3145-3154. [PMID: 38607553 DOI: 10.1007/s00277-024-05745-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 04/03/2024] [Indexed: 04/13/2024]
Abstract
NLRP6 plays a crucial role in maintaining intestinal homeostasis by regulating the interaction between the intestinal mucosa and the microbiota. However, the impact of NLRP6 deficiency on intestinal damage following hematopoietic stem cell transplantation (HSCT) remains poorly understood. In this study, we established a syngeneic HSCT mouse model using C57BL/6 mice as donors and NLRP6-/- or C57BL/6 mice as recipients. Our findings revealed that NLRP6 deficiency had minimal influence on peripheral blood cell counts and splenic immune cell proportions in transplanted mice. However, it exacerbated pathological changes in the small intestine on day 14 post-transplantation, accompanied by increased proportions of macrophages, dendritic cells, and neutrophils. Furthermore, the NLRP6 deficiency resulted in elevated expression of MPO and CD11b, while reducing the levels mature caspase-1 and mature IL-1β in the intestine. Moreover, the NLRP6 deficiency disturbed the expression of apoptosis-related molecules and decreased the tight junction protein occludin. Notably, recipient mice with NLRP6 deficiency exhibited lower mRNA expression levels of antimicrobial genes, such as Reg3γ and Pla2g2a. The short-term increase in inflammatory cell infiltration caused by NLRP6 deficiency was associated with intestinal damage, increased apoptosis, reduced expression of antimicrobial peptides, and impaired intestinal repair. Taken together, our findings demonstrate that the loss of NLRP6 exacerbates post-transplantation intestinal damage in recipient mice.
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Affiliation(s)
- Shengyun Zhu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Xue Zhang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Second Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, China
| | - Kairen Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Jing Liang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Weiwei Wang
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
| | - Lingyu Zeng
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China
| | - Kailin Xu
- Institute of Blood Diseases, Xuzhou Medical University, Xuzhou, China.
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, No.99 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
- Key Laboratory of Bone Marrow Stem Cell, Xuzhou, Jiangsu, China.
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Mazzone RJ, Winsor NJ, Li LY, Barry KT, Ranger A, Goyal S, Meade JJ, Bruce J, Philpott DJ, Mogridge J, Girardin SE. NLRP1B allele 2 does not respond to Val-boro-Pro (VbP) in intestinal epithelial cells. Microbes Infect 2024:105398. [PMID: 39047896 DOI: 10.1016/j.micinf.2024.105398] [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: 02/16/2024] [Revised: 07/09/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
The intestinal mucosa must balance tolerance to commensal microbes and luminal antigens with rapid detection of enteric pathogens in order to maintain homeostasis. This balance is facilitated through the regulation of epithelial layer integrity by innate immune receptors. Certain NOD-like receptors (NLRs) expressed in intestinal epithelial cells, including NLRC4 and NLRP9B, form inflammasomes that protect against pathogens by activating caspase-1 to cause extrusion of infected cells. NLRP1B is a murine NLR encoded by five alleles of a highly polymorphic gene homologous to human NLRP1. NLRP1B forms inflammasomes in response to a variety of pathogens that cause intestinal infections, but it has almost exclusively been studied in immune cells and has not been characterized in cells of the intestinal epithelium. Here, we show that Nlrp1b allele 2 is expressed in ileal and colonic organoids derived for C57BL/6J mice, while the related gene Nlrp1a was not expressed. Nlrp1b was upregulated by interleukin-13 in organoids and by the protozoan Tritrichomonas muris in vivo, suggesting that NLRP1B may be involved in defense against enteric parasites. Surprisingly, while Val-boro-Pro (VbP) activated C57BL/6J-derived bone marrow-derived macrophages, which expressed both Nlrp1a and Nlrp1b, it did not activate intestinal organoids of the same genotype. We furthermore did not detect Nlrp1b in organoids derived from Balb/cJ mice, which express a different allele than the one expressed in C57BL/6J mice. Together, our results suggest that NLRP1B may have an allele-dependent function in murine IECs whose regulation is distinct from that of macrophages, and that the response to VbP might be exclusively driven by NLRP1A in C57BL/6J mice.
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Affiliation(s)
- Ryan J Mazzone
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Nathaniel J Winsor
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada; Department of Immunology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Lu Yi Li
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Kristian T Barry
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia; Department of Molecular and Translational Sciences, Monash University, Clayton, VIC 3168, Australia
| | - Adrienne Ranger
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Shawn Goyal
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Justin J Meade
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Jessica Bruce
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada; Department of Immunology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Dana J Philpott
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada; Department of Immunology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Jeremy Mogridge
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada
| | - Stephen E Girardin
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A8, Ontario, Canada; Department of Immunology, University of Toronto, Toronto M5S 1A8, Ontario, Canada.
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Mu J, Maeda K, Ohashi A, Urano T, Nariai Y, Kamino H, Nakamura M, Yamamura T, Sawada T, Ishikawa E, Murate K, Yamamoto K, Hirose T, Furukawa K, Fujishiro M, Kawashima H. Monoclonal Antibodies Against Mature Interleukin-18 Ameliorate Colitis and Repair Goblet Cell Function. Dig Dis Sci 2024; 69:2573-2585. [PMID: 38713271 PMCID: PMC11258180 DOI: 10.1007/s10620-024-08453-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 04/16/2024] [Indexed: 05/08/2024]
Abstract
BACKGROUND Numerous biological interventions and small molecules are used to treat Crohn's disease; however, the effectiveness of these treatments varies largely. Non-responsiveness to biological therapies is associated with interleukin (IL)-18 gene polymorphisms and high IL-18 expression has been implicated in the pathogenesis of Crohn's disease. AIMS The aim of this study was to elucidate the expression of precursor and mature IL-18 in patients with Crohn's disease who exhibited varied responses to cytokine-targeted treatments and determine whether selective inhibition of mature IL-18 offers a novel therapeutic avenue. METHODS We generated a monoclonal antibody that specifically recognizes the neoepitope of caspase-cleaved mature IL-18. Expression of precursor and mature IL-18 was analyzed in patients with Crohn's disease. Anti-mature IL-18 monoclonal antibodies were intraperitoneally administered in an acute colitis mouse model, and the disease activity index, body weight loss, tissue pathology, proinflammatory cytokine expression, goblet cell function, and microbiota composition were assessed. RESULTS Precursor and mature IL-18 expression was upregulated and goblet cell function was impaired in patients with Crohn's disease who were unresponsive to biological therapies. Administration of anti-mature IL-18 antibodies ameliorated induced colitis by repairing goblet cell function and restoring the mucus layer. CONCLUSIONS The newly developed monoclonal antibody holds promise as a therapeutic alternative for Crohn's disease.
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Affiliation(s)
- Jingxi Mu
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Keiko Maeda
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan.
| | - Ayako Ohashi
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Takeshi Urano
- Department of Biochemistry, Shimane University School of Medicine, Izumo, 693-8501, Japan
- mAbProtein Co. Ltd, Izumo, 693-8501, Japan
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo, 693-8501, Japan
| | - Yuko Nariai
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo, 693-8501, Japan
| | - Hiroki Kamino
- Center for Vaccines and Therapeutic Antibodies for Emerging Infectious Diseases, Shimane University, Izumo, 693-8501, Japan
| | - Masanao Nakamura
- Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Takeshi Yamamura
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Tsunaki Sawada
- Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Eri Ishikawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Kentaro Murate
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Kenta Yamamoto
- Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Takashi Hirose
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Kazuhiro Furukawa
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Hiroki Kawashima
- Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, 466-8550, Japan
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10
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Alipour S, Mardi A, Shajari N, Kazemi T, Sadeghi MR, Ahmadian Heris J, Masoumi J, Baradaran B. Unmasking the NLRP3 inflammasome in dendritic cells as a potential therapeutic target for autoimmunity, cancer, and infectious conditions. Life Sci 2024; 348:122686. [PMID: 38710282 DOI: 10.1016/j.lfs.2024.122686] [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: 01/17/2024] [Revised: 04/13/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Proper and functional immune response requires a complex interaction between innate and adaptive immune cells, which dendritic cells (DCs) are the primary actors in this coordination as professional antigen-presenting cells. DCs are armed with numerous pattern recognition receptors (PRRs) such as nucleotide-binding and oligomerization domain-like receptors (NLRs) like NLRP3, which influence the development of their activation state upon sensation of ligands. NLRP3 is a crucial component of the immune system for protection against tumors and infectious agents, because its activation leads to the assembly of inflammasomes that cause the formation of active caspase-1 and stimulate the maturation and release of proinflammatory cytokines. But, when NLRP3 becomes overactivated, it plays a pathogenic role in the progression of several autoimmune disorders. So, NLRP3 activation is strictly regulated by diverse signaling pathways that are mentioned in detail in this review. Furthermore, the role of NLRP3 in all of the diverse immune cells' subsets is briefly mentioned in this study because NLRP3 plays a pivotal role in modulating other immune cells which are accompanied by DCs' responses and subsequently influence differentiation of T cells to diverse T helper subsets and even impact on cytotoxic CD8+ T cells' responses. This review sheds light on the functional and therapeutic role of NLRP3 in DCs and its contribution to the occurrence and progression of autoimmune disorders, prevention of diverse tumors' development, and recognition and annihilation of various infectious agents. Furthermore, we highlight NLRP3 targeting potential for improving DC-based immunotherapeutic approaches, to be used for the benefit of patients suffering from these disorders.
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Affiliation(s)
- Shiva Alipour
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amirhossein Mardi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Shajari
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tohid Kazemi
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Sadeghi
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Javad Masoumi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Ozturk O, Celebi G, Duman UG, Kupcuk E, Uyanik M, Sertoglu E. Short-chain fatty acid levels in stools of patients with inflammatory bowel disease are lower than those in healthy subjects. Eur J Gastroenterol Hepatol 2024; 36:890-896. [PMID: 38829943 DOI: 10.1097/meg.0000000000002789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
OBJECTIVE Short-chain fatty acids (SCFAs) are produced when the microbiota in the large intestine cause fermentation of dietary carbohydrates and fibers. These fatty acids constitute the primary energy source of colon mucosa cells and have a protective effect in patients suffering from inflammatory bowel disease (IBD). This study aimed to compare the SCFA levels in the stools of patients with IBD and healthy controls. METHOD Healthy controls and patients with IBD aged 18 and over were included in the study. Stool samples from all patients and healthy controls were collected, and stool acetic acid, propionic acid, and butyric acid levels were measured using a gas chromatography-mass spectrometry measurement method. RESULTS In this study, 64 participants were divided into two groups: 34 were in IBD (Crohn disease and ulcerative colitis) and 30 were in healthy control group. When fecal SCFA concentrations of IBD and healthy control groups were compared, a statistically significant difference was observed between them. When the fecal SCFA concentrations of Crohn's disease and ulcerative colitis patients in the IBD group were compared, however, no statistically significant difference was observed between them. Furthermore, when the participants' diet type (carbohydrate-based, vegetable-protein-based and mixed diet) and the number of meals were compared with fecal SCFA concentrations, no statistically significant difference was observed between them. CONCLUSION In general, fecal SCFA levels in patients with IBD were lower than those in healthy controls. Moreover, diet type and the number of meals had no effect on stool SCFA levels in patients with IBD and healthy individuals.
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Affiliation(s)
| | - Gurkan Celebi
- Department of Gastroenterology, Gulhane School of Medicine, University of Health Sciences, Ankara
| | | | | | - Metin Uyanik
- Department of Biochemistry, Çorlu State Hospital, Tekirdag, Turkey
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12
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Shen J, Xie P, Wang J, Yang F, Li S, Jiang H, Wu X, Zhou F, Li J. Nlrp6 protects from corticosterone-induced NSPC ferroptosis by modulating RIG-1/MAVS-mediated mitophagy. Redox Biol 2024; 73:103196. [PMID: 38772149 PMCID: PMC11134915 DOI: 10.1016/j.redox.2024.103196] [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: 04/02/2024] [Revised: 05/12/2024] [Accepted: 05/15/2024] [Indexed: 05/23/2024] Open
Abstract
Hippocampal neural stem/progenitor cells (NSPCs) are highly vulnerable to different stress stimuli, resulting in adult neurogenesis decline and eventual cognitive defects. Our previous study demonstrated that NOD-like receptor family pyrin domain-containing 6 (Nlrp6) highly expressed in NSPCs played a critical role in sustaining hippocampal neurogenesis to resist stress-induced depression, but the underlying mechnistms are still unclear. Here, we found that Nlrp6 depletion led to cognitive defects and hippocampal NSPC loss in mice. RNA-sequencing analysis of the primary NSPCs revealed that Nlrp6 deficiency altered gene expression profiles of mitochondrial energy generation and ferroptotic process. Upon siNlrp6 transfection, as well as corticosterone (CORT) exposure, downregulation of Nlrp6 suppressed retinoic acid-inducible gene I (RIG-1)/mitochondrial antiviral signaling proteins (MAVS)-mediated autophagy, but drove NSPC ferroptotic death. More interesting, short chain fatty acids (SCFAs) upregulated Nlrp6 expression and promoted RIG-1/MAVS-mediated mitophagy, preventing CORT-induced NSPC ferroptosis. Our study further demonstrates that Nlrp6 should be a sensor for RIG-1/MAVS-mediated mitophagy and play a critical role in maintain mitochondrial homeostasis of hippocampal NSPCs. These results suggests that Nlrp6 should be a potential drug target to combat neurodegenerative diseases relative with chronic stress.
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Affiliation(s)
- Jingyan Shen
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China; State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Pengfei Xie
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Junhan Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China; State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Fan Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Shengjie Li
- School of Food Science, Nanjing Xiaozhuang University, Nanjing, 211171, China
| | - Haitao Jiang
- School of Food Science, Nanjing Xiaozhuang University, Nanjing, 211171, China
| | - Xuefeng Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Feng Zhou
- School of Food Science, Nanjing Xiaozhuang University, Nanjing, 211171, China.
| | - Jianmei Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, China.
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13
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Ghafouri F, Dehghanian Reyhan V, Sadeghi M, Miraei-Ashtiani SR, Kastelic JP, Barkema HW, Shirali M. Integrated Analysis of Transcriptome Profiles and lncRNA-miRNA-mRNA Competing Endogenous RNA Regulatory Network to Identify Biological Functional Effects of Genes and Pathways Associated with Johne's Disease in Dairy Cattle. Noncoding RNA 2024; 10:38. [PMID: 39051372 PMCID: PMC11270299 DOI: 10.3390/ncrna10040038] [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: 04/12/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/27/2024] Open
Abstract
Paratuberculosis or Johne's disease (JD), a chronic granulomatous gastroenteritis caused by Mycobacterium avium subsp. paratuberculosis (MAP), causes huge economic losses and reduces animal welfare in dairy cattle herds worldwide. At present, molecular mechanisms and biological functions involved in immune responses to MAP infection of dairy cattle are not clearly understood. Our purpose was to integrate transcriptomic profiles and competing endogenous RNA (ceRNA) network analyses to identify key messenger RNAs (mRNAs) and regulatory RNAs involved in molecular regulation of peripheral blood mononuclear cells (PBMCs) for MAP infection in dairy cattle. In total, 28 lncRNAs, 42 miRNAs, and 370 mRNAs were identified by integrating gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. In this regard, we identified 21 hub genes (CCL20, CCL5, CD40, CSF2, CXCL8, EIF2AK2, FOS, IL10, IL17A, IL1A, IL1B, IRF1, MX2, NFKB1, NFKBIA, PTGS2, SOCS3, TLR4, TNF, TNFAIP3, and VCAM1) involved in MAP infection. Furthermore, eight candidate subnets with eight lncRNAs, 29 miRNAs, and 237 mRNAs were detected through clustering analyses, whereas GO enrichment analysis of identified RNAs revealed 510, 22, and 11 significantly enriched GO terms related to MAP infection in biological process, molecular function, and cellular component categories, respectively. The main metabolic-signaling pathways related to MAP infection that were enriched included the immune system process, defense response, response to cytokine, leukocyte migration, regulation of T cell activation, defense response to bacterium, NOD-like receptor, B cell receptor, TNF, NF-kappa B, IL-17, and T cell receptor signaling pathways. Contributions of transcriptome profiles from MAP-positive and MAP-negative sample groups plus a ceRNA regulatory network underlying phenotypic differences in the intensity of pathogenicity of JD provided novel insights into molecular mechanisms associated with immune system responses to MAP infection in dairy cattle.
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Affiliation(s)
- Farzad Ghafouri
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran; (F.G.); (V.D.R.); (S.R.M.-A.)
| | - Vahid Dehghanian Reyhan
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran; (F.G.); (V.D.R.); (S.R.M.-A.)
| | - Mostafa Sadeghi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran; (F.G.); (V.D.R.); (S.R.M.-A.)
| | - Seyed Reza Miraei-Ashtiani
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran; (F.G.); (V.D.R.); (S.R.M.-A.)
| | - John P. Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (J.P.K.); (H.W.B.)
| | - Herman W. Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (J.P.K.); (H.W.B.)
| | - Masoud Shirali
- School of Biological Sciences, Queen’s University Belfast, Belfast BT9 5AJ, UK
- Agri-Food and Biosciences Institute, Hillsborough BT26 6DR, UK
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14
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Robinson KS, Boucher D. Inflammasomes in epithelial innate immunity: front line warriors. FEBS Lett 2024; 598:1335-1353. [PMID: 38485451 DOI: 10.1002/1873-3468.14848] [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: 11/23/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 06/12/2024]
Abstract
Our epithelium represents a battle ground against a variety of insults including pathogens and danger signals. It encodes multiple sensors that detect and respond to such insults, playing an essential role in maintaining and defending tissue homeostasis. One key set of defense mechanisms is our inflammasomes which drive innate immune responses including, sensing and responding to pathogen attack, through the secretion of pro-inflammatory cytokines and cell death. Identification of physiologically relevant triggers for inflammasomes has greatly influenced our ability to decipher the mechanisms behind inflammasome activation. Furthermore, identification of patient mutations within inflammasome components implicates their involvement in a range of epithelial diseases. This review will focus on exploring the roles of inflammasomes in epithelial immunity and cover: the diversity and differential expression of inflammasome sensors amongst our epithelial barriers, their ability to sense local infection and damage and the contribution of the inflammasomes to epithelial homeostasis and disease.
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Affiliation(s)
- Kim Samirah Robinson
- The Skin Innate Immunity and Inflammatory Disease Lab, Skin Research Centre, Department of Hull York Medical School, University of York, UK
- York Biomedical Research Institute, University of York, UK
| | - Dave Boucher
- York Biomedical Research Institute, University of York, UK
- Department of Biology, University of York, UK
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15
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Cui X, Wang YT. Function of autophagy genes in innate immune defense against mucosal pathogens. Curr Opin Microbiol 2024; 79:102456. [PMID: 38554450 DOI: 10.1016/j.mib.2024.102456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 04/01/2024]
Abstract
Mucosal immunity is posed to constantly interact with commensal microbes and invading pathogens. As a fundamental cell biological pathway affecting immune response, autophagy regulates the interaction between mucosal immunity and microbes through multiple mechanisms, including direct elimination of microbes, control of inflammation, antigen presentation and lymphocyte homeostasis, and secretion of immune mediators. Some of these physiologically important functions do not involve canonical degradative autophagy but rely on certain autophagy genes and their 'autophagy gene-specific functions.' Here, we review the relationship between autophagy and important mucosal pathogens, including influenza virus, Mycobacterium tuberculosis, Salmonella enterica, Citrobacter rodentium, norovirus, and herpes simplex virus, with a particular focus on distinguishing the canonical versus gene-specific mechanisms of autophagy genes.
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Affiliation(s)
- Xiaoyan Cui
- Center for Infectious Disease Research, School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China
| | - Ya-Ting Wang
- Center for Infectious Disease Research, School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China; SXMU-Tsinghua Collaborative Innovation Center for Frontier Medicine, Shanxi Medical University, Taiyuan, Shanxi 030001, China.
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16
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Li Z, Xiong W, Liang Z, Wang J, Zeng Z, Kołat D, Li X, Zhou D, Xu X, Zhao L. Critical role of the gut microbiota in immune responses and cancer immunotherapy. J Hematol Oncol 2024; 17:33. [PMID: 38745196 PMCID: PMC11094969 DOI: 10.1186/s13045-024-01541-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: 10/25/2023] [Accepted: 04/03/2024] [Indexed: 05/16/2024] Open
Abstract
The gut microbiota plays a critical role in the progression of human diseases, especially cancer. In recent decades, there has been accumulating evidence of the connections between the gut microbiota and cancer immunotherapy. Therefore, understanding the functional role of the gut microbiota in regulating immune responses to cancer immunotherapy is crucial for developing precision medicine. In this review, we extract insights from state-of-the-art research to decipher the complicated crosstalk among the gut microbiota, the systemic immune system, and immunotherapy in the context of cancer. Additionally, as the gut microbiota can account for immune-related adverse events, we discuss potential interventions to minimize these adverse effects and discuss the clinical application of five microbiota-targeted strategies that precisely increase the efficacy of cancer immunotherapy. Finally, as the gut microbiota holds promising potential as a target for precision cancer immunotherapeutics, we summarize current challenges and provide a general outlook on future directions in this field.
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Affiliation(s)
- Zehua Li
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China
- Chinese Academy of Medical Sciences (CAMS), CAMS Oxford Institute (COI), Nuffield Department of Medicine, University of Oxford, Oxford, England
| | - Weixi Xiong
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
- Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China
| | - Zhu Liang
- Chinese Academy of Medical Sciences (CAMS), CAMS Oxford Institute (COI), Nuffield Department of Medicine, University of Oxford, Oxford, England
- Target Discovery Institute, Center for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, England
| | - Jinyu Wang
- Departments of Obstetrics and Gynecology, West China Second University Hospital of Sichuan University, Chengdu, China
| | - Ziyi Zeng
- Department of Neonatology, West China Second University Hospital of Sichuan University, Chengdu, China
| | - Damian Kołat
- Department of Functional Genomics, Medical University of Lodz, Lodz, Poland
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz, Poland
| | - Xi Li
- Department of Urology, Churchill Hospital, Oxford University Hospitals NHS Foundation, Oxford, UK
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
- Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China
| | - Xuewen Xu
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Linyong Zhao
- Department of General Surgery and Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
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17
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Akinsuyi OS, Xhumari J, Ojeda A, Roesch LFW. Gut permeability among Astronauts during Space missions. LIFE SCIENCES IN SPACE RESEARCH 2024; 41:171-180. [PMID: 38670644 DOI: 10.1016/j.lssr.2024.03.003] [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: 09/11/2023] [Revised: 02/02/2024] [Accepted: 03/13/2024] [Indexed: 04/28/2024]
Abstract
The space environment poses substantial challenges to human physiology, including potential disruptions in gastrointestinal health. Gut permeability has only recently become widely acknowledged for its potential to cause adverse effects on a systemic level, rendering it a critical factor to investigate in the context of spaceflight. Here, we propose that astronauts experience the onset of leaky gut during space missions supported by transcriptomic and metagenomic analysis of human and murine samples. A genetic map contributing to intestinal permeability was constructed from a systematic review of current literature. This was referenced against our re-analysis of three independent transcriptomic datasets which revealed significant changes in gene expression patterns associated with the gut barrier. Specifically, in astronauts during flight, we observed a substantial reduction in the expression genes that are crucial for intestinal barrier function, goblet cell development, gut microbiota modulation, and immune responses. Among rodent spaceflight studies, differential expression of cytokines, chemokines, and genes which regulate mucin production and post-translational modifications suggest a similar dysfunction of intestinal permeability. Metagenomic analysis of feces from two murine studies revealed a notable reduction probiotic, short chain fatty acid-producing bacteria and an increase in the Gram-negative pathogens, including Citrobacter rodentium, Enterobacter cloacea, Klebsiella aerogenes, and Proteus hauseri which promote LPS circulation, a recipe for barrier disruption and systemic inflammatory activation. These findings emphasize the critical need to understand the underlying mechanisms and develop interventions to maintain gastrointestinal health in space.
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Affiliation(s)
- Oluwamayowa S Akinsuyi
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Jessica Xhumari
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Amanda Ojeda
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Luiz F W Roesch
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA.
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18
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Ambrogi M, Vezina CM. Roles of airway and intestinal epithelia in responding to pathogens and maintaining tissue homeostasis. Front Cell Infect Microbiol 2024; 14:1346087. [PMID: 38736751 PMCID: PMC11082347 DOI: 10.3389/fcimb.2024.1346087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/10/2024] [Indexed: 05/14/2024] Open
Abstract
Epithelial cells form a resilient barrier and orchestrate defensive and reparative mechanisms to maintain tissue stability. This review focuses on gut and airway epithelia, which are positioned where the body interfaces with the outside world. We review the many signaling pathways and mechanisms by which epithelial cells at the interface respond to invading pathogens to mount an innate immune response and initiate adaptive immunity and communicate with other cells, including resident microbiota, to heal damaged tissue and maintain homeostasis. We compare and contrast how airway and gut epithelial cells detect pathogens, release antimicrobial effectors, collaborate with macrophages, Tregs and epithelial stem cells to mount an immune response and orchestrate tissue repair. We also describe advanced research models for studying epithelial communication and behaviors during inflammation, tissue injury and disease.
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Affiliation(s)
| | - Chad M. Vezina
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States
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19
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Ghimire L, Paudel S, Le J, Jin L, Cai S, Bhattarai D, Jeyaseelan S. NLRP6 negatively regulates host defense against polymicrobial sepsis. Front Immunol 2024; 15:1248907. [PMID: 38720893 PMCID: PMC11078015 DOI: 10.3389/fimmu.2024.1248907] [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: 06/27/2023] [Accepted: 04/04/2024] [Indexed: 05/12/2024] Open
Abstract
Introduction Sepsis remains a major cause of death in Intensive Care Units. Sepsis is a life-threatening multi-organ dysfunction caused by a dysregulated systemic inflammatory response. Pattern recognition receptors, such as TLRs and NLRs contribute to innate immune responses. Upon activation, some NLRs form multimeric protein complexes in the cytoplasm termed "inflammasomes" which induce gasdermin d-mediated pyroptotic cell death and the release of mature forms of IL-1β and IL-18. The NLRP6 inflammasome is documented to be both a positive and a negative regulator of host defense in distinct infectious diseases. However, the role of NLRP6 in polymicrobial sepsis remains elusive. Methods We have used NLRP6 KO mice and human septic spleen samples to examine the role of NLRP6 in host defense in sepsis. Results NLRP6 KO mice display enhanced survival, reduced bacterial burden in the organs, and reduced cytokine/chemokine production. Co-housed WT and KO mice following sepsis show decreased bacterial burden in the KO mice as observed in singly housed groups. NLRP6 is upregulated in CD3, CD4, and CD8 cells of septic patients and septic mice. The KO mice showed a higher number of CD3, CD4, and CD8 positive T cell subsets and reduced T cell death in the spleen following sepsis. Furthermore, administration of recombinant IL-18, but not IL-1β, elicited excessive inflammation and reversed the survival advantages observed in NLRP6 KO mice. Conclusion These results unveil NLRP6 as a negative regulator of host defense during sepsis and offer novel insights for the development of new treatment strategies for sepsis.
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Affiliation(s)
- Laxman Ghimire
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - Sagar Paudel
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - John Le
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - Liliang Jin
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - Shanshan Cai
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - Dinesh Bhattarai
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
| | - Samithamby Jeyaseelan
- Laboratory of Lung Biology, Department of Pathobiological Sciences and Center for Lung Biology and Disease, School of Veterinary Medicine, Louisiana State University (LSU) and Agricultural and Mechanical College, Baton Rouge, LA, United States
- Section of Pulmonary and Critical Care, Department of Medicine, LSU Health Sciences Center, New Orleans, LA, United States
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20
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Xu Z, Kombe Kombe AJ, Deng S, Zhang H, Wu S, Ruan J, Zhou Y, Jin T. NLRP inflammasomes in health and disease. MOLECULAR BIOMEDICINE 2024; 5:14. [PMID: 38644450 PMCID: PMC11033252 DOI: 10.1186/s43556-024-00179-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 03/20/2024] [Indexed: 04/23/2024] Open
Abstract
NLRP inflammasomes are a group of cytosolic multiprotein oligomer pattern recognition receptors (PRRs) involved in the recognition of pathogen-associated molecular patterns (PAMPs) and danger-associated molecular patterns (DAMPs) produced by infected cells. They regulate innate immunity by triggering a protective inflammatory response. However, despite their protective role, aberrant NLPR inflammasome activation and gain-of-function mutations in NLRP sensor proteins are involved in occurrence and enhancement of non-communicating autoimmune, auto-inflammatory, and neurodegenerative diseases. In the last few years, significant advances have been achieved in the understanding of the NLRP inflammasome physiological functions and their molecular mechanisms of activation, as well as therapeutics that target NLRP inflammasome activity in inflammatory diseases. Here, we provide the latest research progress on NLRP inflammasomes, including NLRP1, CARD8, NLRP3, NLRP6, NLRP7, NLRP2, NLRP9, NLRP10, and NLRP12 regarding their structural and assembling features, signaling transduction and molecular activation mechanisms. Importantly, we highlight the mechanisms associated with NLRP inflammasome dysregulation involved in numerous human auto-inflammatory, autoimmune, and neurodegenerative diseases. Overall, we summarize the latest discoveries in NLRP biology, their forming inflammasomes, and their role in health and diseases, and provide therapeutic strategies and perspectives for future studies about NLRP inflammasomes.
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Affiliation(s)
- Zhihao Xu
- Center of Disease Immunity and Intervention, College of Medicine, Lishui University, Lishui, 323000, China
| | - Arnaud John Kombe Kombe
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Shasha Deng
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Hongliang Zhang
- Center of Disease Immunity and Intervention, College of Medicine, Lishui University, Lishui, 323000, China
| | - Songquan Wu
- Center of Disease Immunity and Intervention, College of Medicine, Lishui University, Lishui, 323000, China
| | - Jianbin Ruan
- Department of Immunology, University of Connecticut Health Center, Farmington, 06030, USA.
| | - Ying Zhou
- Department of Obstetrics and Gynecology, Core Facility Center, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui, China.
| | - Tengchuan Jin
- Center of Disease Immunity and Intervention, College of Medicine, Lishui University, Lishui, 323000, China.
- Laboratory of Structural Immunology, the CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China.
- Department of Obstetrics and Gynecology, Core Facility Center, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, 230001, Anhui, China.
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei, Anhui, China.
- Biomedical Sciences and Health Laboratory of Anhui Province, University of Science & Technology of China, Hefei, 230027, China.
- Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, 230001, China.
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21
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Manshouri S, Seif F, Kamali M, Bahar MA, Mashayekh A, Molatefi R. The interaction of inflammasomes and gut microbiota: novel therapeutic insights. Cell Commun Signal 2024; 22:209. [PMID: 38566180 PMCID: PMC10986108 DOI: 10.1186/s12964-024-01504-1] [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: 09/26/2023] [Accepted: 01/28/2024] [Indexed: 04/04/2024] Open
Abstract
Inflammasomes are complex platforms for the cleavage and release of inactivated IL-1β and IL-18 cytokines that trigger inflammatory responses against damage-associated molecular patterns (DAMPs) or pathogen-associated molecular patterns (PAMPs). Gut microbiota plays a pivotal role in maintaining gut homeostasis. Inflammasome activation needs to be tightly regulated to limit aberrant activation and bystander damage to the host cells. Several types of inflammasomes, including Node-like receptor protein family (e.g., NLRP1, NLRP3, NLRP6, NLRP12, NLRC4), PYHIN family, and pyrin inflammasomes, interact with gut microbiota to maintain gut homeostasis. This review discusses the current understanding of how inflammasomes and microbiota interact, and how this interaction impacts human health. Additionally, we introduce novel biologics and antagonists, such as inhibitors of IL-1β and inflammasomes, as therapeutic strategies for treating gastrointestinal disorders when inflammasomes are dysregulated or the composition of gut microbiota changes.
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Affiliation(s)
- Shirin Manshouri
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran
| | - Farhad Seif
- Department of Photodynamic Therapy, Medical Laser Research Center, Academic Center for Education, Culture, and Research (ACECR), Tehran, Iran
- Department of Immunology and Allergy, Academic Center for Education, Culture, and Research (ACECR), Tehran, Iran
| | - Monireh Kamali
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran
| | - Mohammad Ali Bahar
- Department of Immunology, Medical School, Iran University of Medical Sciences, Tehran, Iran
| | - Arshideh Mashayekh
- Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Valiasr St, Niayesh Intersection, Tehran, 1995614331, Iran.
| | - Rasol Molatefi
- Cancer Immunology and Immunotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
- Pediatric Department of Bou Ali Hospital, Ardabil University of Medical Sciences, Ardabil, 56189-85991, Iran.
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22
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Yin Y, Ahmed N, Hassan MF, Guo K, Shakir Y, Zang J, Lyu J. Effect of Nano-selenium on Biological Mechanism of Goblet Cells of the Small Intestine Within Laying Hen. Biol Trace Elem Res 2024; 202:1699-1710. [PMID: 37454307 DOI: 10.1007/s12011-023-03770-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Dietary selenium intake within the normal physiological range is critical for various supporting biological functions. However, the effect of nano-selenium on biological mechanism of goblet cells associated with autophagy is largely unknown.The purpose of this study was to investigate the effect of nano-selenium on the mucosal immune-defense mechanism of goblet cells (GCs) in the small intestine of laying hens.The autophagy was determined by using specific markers. Nano-selenium-treated group of immunohistochemistry (IHC), immunofluorescence (IF), and western blotting (WB) results indicated the strong positive immune signaling of microtubule-associated light chain (LC3) within the mucosal surface of the small intestine. However, weak expression of LC3 was observed in the 3-methyladenine autophagy inhibitor (3-MA) group. IHC and IF staining results showed the opposite tendency for LC3 of sequestosome 1 (P62/SQSTM1). P62/SQSTM1 showed strong positive immune signaling within the mucosal surface of the small intestine of the 3-MAgroup, and weak immune signaling of P62/SQSTM1 in the nano-selenium-treated group. Moreover, pinpointing autophagy was involved in the mucosal production and enrichment of mucosal immunity of the GCs. The morphology and ultrastructure evidence showed that the mucus secretion of GCs was significantly increased after nano-selenium treatment confirmed by light and transmission electron microscopy. Besides that, immunostaining of IHC, IF and WB showed that autophagy enhanced the secretion of Mucin2 (Muc2) protein in nano-selenium-treated group. This work illustrates that the nano-selenium particle might enhance the mucosal immune-defense mechanism via the protective role of GCs for intestinal homeostasis through autophagy.
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Affiliation(s)
- Yongxiang Yin
- Department of Pathology, Wuxi Maternal and Child Health Care Hospital, Womens Hospital of Jiangnan University, Jiangsu, 214002, China
| | - Nisar Ahmed
- Faculty of Veterinary and Animal Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, 90150, Pakistan
| | - Mohammad Farooque Hassan
- Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Sindh, 67210, Pakistan
| | - Kai Guo
- Department of Pathology, Suzhou Science and Technology Town Hospital, Suzhou, 215153, China
| | - Yasmeen Shakir
- Department of Biochemistry, Hazara University, Mansehra, 21300, Pakistan
| | - Jia Zang
- Department of Laboratory Medicine, Wuxi Maternal and Child Health Care Hospital, Womens Hospital of Jiangnan University, Jiangsu, 214002, China.
| | - Jue Lyu
- Department of Laboratory Medicine, Wuxi No.2 Peoples Hospital, Jiangnan University Medical Center, Jiangsu, 214002, China.
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23
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Ali A, Wu L, Ali SS. Gut microbiota and acute kidney injury: immunological crosstalk link. Int Urol Nephrol 2024; 56:1345-1358. [PMID: 37749436 DOI: 10.1007/s11255-023-03760-5] [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: 04/14/2023] [Accepted: 08/14/2023] [Indexed: 09/27/2023]
Abstract
The gut microbiota, often called the "forgotten organ," plays a crucial role in bidirectional communication with the host for optimal physiological function. This communication helps regulate the host's immunity and metabolism positively and negatively. Many factors influence microbiota homeostasis and subsequently lead to an immune system imbalance. The correlation between an unbalanced immune system and acute diseases such as acute kidney injury is not fully understood, and the role of gut microbiota in disease pathogenesis is still yet uncovered. This review summarizes our understanding of gut microbiota, focusing on the interactions between the host's immune system and the microbiome and their impact on acute kidney injury.
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Affiliation(s)
- Asmaa Ali
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, 212013, China.
- Department of Pulmonary Medicine, Abbassia Chest Hospital, MOH, Cairo, Egypt.
- Department of Respiratory Allergy, A Al-Rashed Allergy Center, Ministry of Health, Kuwait, Kuwait.
| | - Liang Wu
- Yizheng Hospital, Nanjing Drum Tower Hospital Group, Yizheng, 210008, China.
| | - Sameh Samir Ali
- School of the Environment and Safety Engineering, Biofuels Institute, Jiangsu University, Zhenjiang, 212013, China
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
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24
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Didriksen BJ, Eshleman EM, Alenghat T. Epithelial regulation of microbiota-immune cell dynamics. Mucosal Immunol 2024; 17:303-313. [PMID: 38428738 PMCID: PMC11412483 DOI: 10.1016/j.mucimm.2024.02.008] [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: 12/12/2023] [Revised: 02/09/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
The mammalian gastrointestinal tract hosts a diverse community of trillions of microorganisms, collectively termed the microbiota, which play a fundamental role in regulating tissue physiology and immunity. Recent studies have sought to dissect the cellular and molecular mechanisms mediating communication between the microbiota and host immune system. Epithelial cells line the intestine and form an initial barrier separating the microbiota from underlying immune cells, and disruption of epithelial function has been associated with various conditions ranging from infection to inflammatory bowel diseases and cancer. From several studies, it is now clear that epithelial cells integrate signals from commensal microbes. Importantly, these non-hematopoietic cells also direct regulatory mechanisms that instruct the recruitment and function of microbiota-sensitive immune cells. In this review, we discuss the central role that has emerged for epithelial cells in orchestrating intestinal immunity and highlight epithelial pathways through which the microbiota can calibrate tissue-intrinsic immune responses.
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Affiliation(s)
- Bailey J Didriksen
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Emily M Eshleman
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
| | - Theresa Alenghat
- Division of Immunobiology and Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
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25
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Wang Z, Shen J. The role of goblet cells in Crohn' s disease. Cell Biosci 2024; 14:43. [PMID: 38561835 PMCID: PMC10985922 DOI: 10.1186/s13578-024-01220-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024] Open
Abstract
The prevalence of Crohn's disease (CD), a subtype of inflammatory bowel disease (IBD), is increasing worldwide. The pathogenesis of CD is hypothesized to be related to environmental, genetic, immunological, and bacterial factors. Current studies have indicated that intestinal epithelial cells, including columnar, Paneth, M, tuft, and goblet cells dysfunctions, are strongly associated with these pathogenic factors. In particular, goblet cells dysfunctions have been shown to be related to CD pathogenesis by direct or indirect ways, according to the emerging studies. The mucus barrier was established with the help of mucins secreted by goblet cells. Not only do the mucins mediate the mucus barrier permeability and bacterium selection, but also, they are closely linked with the endothelial reticulum stress during the synthesis process. Goblet cells also play a vital role in immune response. It was indicated that goblet cells take part in the antigen presentation and cytokines secretion process. Disrupted goblet cells related immune process were widely discovered in CD patients. Meanwhile, dysbiosis of commensal and pathogenic microbiota can induce myriad immune responses through mucus and goblet cell-associated antigen passage. Microbiome dysbiosis lead to inflammatory reaction against pathogenic bacteria and abnormal tolerogenic response. All these three pathways, including the loss of mucus barrier function, abnormal immune reaction, and microbiome dysbiosis, may have independent or cooperative effect on the CD pathogenesis. However, many of the specific mechanisms underlying these pathways remain unclear. Based on the current understandings of goblet cell's role in CD pathogenesis, substances including butyrate, PPARγagonist, Farnesoid X receptor agonist, nuclear factor-Kappa B, nitrate, cytokines mediators, dietary and nutrient therapies were all found to have potential therapeutic effects on CD by regulating the goblet cells mediated pathways. Several monoclonal antibodies already in use for the treatment of CD in the clinical settings were also found to have some goblet cells related therapeutic targets. In this review, we introduce the disease-related functions of goblet cells, their relationship with CD, their possible mechanisms, and current CD treatments targeting goblet cells.
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Affiliation(s)
- Zichen Wang
- Division of Gastroenterology and Hepatology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Ministry of Health, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, No.160 PuJian Road, Shanghai, 200127, China
| | - Jun Shen
- Division of Gastroenterology and Hepatology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Inflammatory Bowel Disease Research Center, Renji Hospital, School of Medicine, Ministry of Health, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, No.160 PuJian Road, Shanghai, 200127, China.
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26
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Di Vincenzo F, Del Gaudio A, Petito V, Lopetuso LR, Scaldaferri F. Gut microbiota, intestinal permeability, and systemic inflammation: a narrative review. Intern Emerg Med 2024; 19:275-293. [PMID: 37505311 PMCID: PMC10954893 DOI: 10.1007/s11739-023-03374-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023]
Abstract
The intestine is the largest interface between the internal body and the external environment. The intestinal barrier is a dynamic system influenced by the composition of the intestinal microbiome and the activity of intercellular connections, regulated by hormones, dietary components, inflammatory mediators, and the enteric nervous system (ENS). Over the years, it has become increasingly evident that maintaining a stable intestinal barrier is crucial to prevent various potentially harmful substances and pathogens from entering the internal environment. Disruption of the barrier is referred to as 'leaky gut' or leaky gut wall syndrome and seems to be characterized by the release of bacterial metabolites and endotoxins, such as lipopolysaccharide (LPS), into the circulation. This condition, mainly caused by bacterial infections, oxidative stress, high-fat diet, exposure to alcohol or chronic allergens, and dysbiosis, appear to be highly connected with the development and/or progression of several metabolic and autoimmune systemic diseases, including obesity, non-alcoholic fatty liver disease (NAFLD), neurodegeneration, cardiovascular disease, inflammatory bowel disease, and type 1 diabetes mellitus (T1D). In this review, starting from a description of the mechanisms that enable barrier homeostasis and analyzing the relationship between this complex ecosystem and various pathological conditions, we explore the role of the gut barrier in driving systemic inflammation, also shedding light on current and future therapeutic interventions.
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Affiliation(s)
- Federica Di Vincenzo
- UOS Malattie Infiammatorie Croniche Intestinali, Centro Malattie Apparato Digerente (CeMAD), Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go A. Gemelli 8, Rome, Italy.
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, L.go F. Vito 1, Rome, Italy.
| | - Angelo Del Gaudio
- UOS Malattie Infiammatorie Croniche Intestinali, Centro Malattie Apparato Digerente (CeMAD), Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go A. Gemelli 8, Rome, Italy
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, L.go F. Vito 1, Rome, Italy
| | - Valentina Petito
- UOS Malattie Infiammatorie Croniche Intestinali, Centro Malattie Apparato Digerente (CeMAD), Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go A. Gemelli 8, Rome, Italy
| | - Loris Riccardo Lopetuso
- UOS Malattie Infiammatorie Croniche Intestinali, Centro Malattie Apparato Digerente (CeMAD), Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go A. Gemelli 8, Rome, Italy
| | - Franco Scaldaferri
- UOS Malattie Infiammatorie Croniche Intestinali, Centro Malattie Apparato Digerente (CeMAD), Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go A. Gemelli 8, Rome, Italy
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, L.go F. Vito 1, Rome, Italy
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27
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Chang L, Xu L, Tian Y, Liu Z, Song M, Li S, Zhang X, Chen Y, Hao Q, Lu Y, Zhen Y. NLRP6 deficiency suppresses colorectal cancer liver metastasis growth by modulating M-MDSC-induced immunosuppressive microenvironment. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167035. [PMID: 38278335 DOI: 10.1016/j.bbadis.2024.167035] [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: 09/08/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024]
Abstract
Colorectal cancer liver metastasis (CRLM) a profound influence on the prognosis of patients with colorectal cancer (CRC), prompting a comprehensive inquiry into its underlying mechanisms. Amidst the multifaceted tumor microenvironment, myeloid-derived suppressor cells (MDSCs) have emerged as pivotal orchestrators of immune modulation. However, their specific contributions to the CRLM have not been explored. The role of NLRP6, a member of the NOD-like receptor family, is of interest. Employing a liver metastasis model, our investigation revealed a heightened accumulation of monocytic MDSCs (M-MDSCs) within metastatic sites, culminating in an immunosuppressive milieu characterized by depleted CD8+ T cell populations. Remarkably, the absence of NLRP6 disrupts this intricate immunosuppressive network, highlighting its nuanced role in sculpting the trajectory of CRLM. This study elucidates the interplay between NLRP6 and MDSCs, potentially guiding novel therapeutic strategies to recalibrate the immune microenvironment in CRLM and enhance patient outcomes.
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Affiliation(s)
- Liangzheng Chang
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Lei Xu
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Yuying Tian
- Inner Mongolia Medical University, Hohhot, Inner Mongolia 010107, China
| | - Zherui Liu
- Peking University 302 Clinical Medical School, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - Meiru Song
- The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China
| | - Shuang Li
- Peking University 302 Clinical Medical School, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - Xinfeng Zhang
- The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China
| | - Yue Chen
- Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Qiuyao Hao
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China
| | - Yinying Lu
- Guizhou Medical University, Guiyang, Guizhou 550004, China; Peking University 302 Clinical Medical School, Beijing 100039, China; The Fifth Clinical Medical College of Anhui Medical University, Beijing 100039, China; Comprehensive Liver Cancer Center, The Fifth Medical Center of PLA General Hospital, Beijing 100039, China.
| | - Yunhuan Zhen
- Department of Colorectal Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, China; Guizhou Medical University, Guiyang, Guizhou 550004, China.
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28
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Bonhomme D, Santecchia I, Escoll P, Papadopoulos S, Vernel-Pauillac F, Boneca IG, Werts C. Leptospiral lipopolysaccharide dampens inflammation through upregulation of autophagy adaptor p62 and NRF2 signaling in macrophages. Microbes Infect 2024; 26:105274. [PMID: 38081475 DOI: 10.1016/j.micinf.2023.105274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
Leptospira interrogans are pathogenic bacteria responsible for leptospirosis, a worldwide zoonosis. All vertebrates can be infected, and some species like humans are susceptible to the disease whereas rodents such as mice are resistant and become asymptomatic renal carriers. Leptospires are stealth bacteria that are known to escape several immune recognition pathways and resist killing mechanisms. We recently published that leptospires may survive intracellularly in and exit macrophages, avoiding xenophagy, a pathogen-targeting form of autophagy. Interestingly, the latter is one of the antimicrobial mechanisms often highjacked by bacteria to evade the host immune response. In this study we explored whether leptospires subvert the key molecular players of autophagy to facilitate infection. We showed in macrophages that leptospires triggered a specific accumulation of autophagy-adaptor p62 in puncta-like structures, without altering autophagic flux. We demonstrated that Leptospira-induced p62 accumulation is a passive mechanism depending on the leptospiral virulence factor LPS signaling via TLR4/TLR2. p62 is a central pleiotropic protein, also mediating cell stress and death, via the translocation of transcription factors. We demonstrated that Leptospira-driven accumulation of p62 induced the translocation of transcription factor NRF2, a key player in the anti-oxidant response. However, NRF2 translocation upon Leptospira infection did not result as expected in antioxydant response, but dampened the production of inflammatory mediators such as iNOS/NO, TNF and IL6. Overall, these findings highlight a novel passive bacterial mechanism linked to LPS and p62/NRF2 signaling that decreases inflammation and contributes to the stealthiness of leptospires.
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Affiliation(s)
- Delphine Bonhomme
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France
| | - Ignacio Santecchia
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France
| | - Pedro Escoll
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Unité Biologie des Bactéries Intracellulaires, Paris, France
| | - Stylianos Papadopoulos
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France
| | - Frédérique Vernel-Pauillac
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France
| | - Ivo G Boneca
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France
| | - Catherine Werts
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Unité de Biologie et Génétique de la Paroi Bactérienne, Paris, France.
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He Q, Meng C, Jia M, Tan J, Huang K, Gan H, Li L, Zhao J. NLRP6 deficiency inhibits neuroinflammation and ameliorates brain injury in ischemic stroke by blocking NLRs inflammasomes activation through proteasomal degradation of pro-caspase-1. Neurobiol Dis 2024; 192:106434. [PMID: 38341160 DOI: 10.1016/j.nbd.2024.106434] [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: 10/26/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024] Open
Abstract
Innate inflammation is crucial for ischemic stroke development. NLRP6, a nucleotide-binding and oligomerization domain-like receptors (NLRs) family member, regulates innate inflammation. Whether NLRP6 regulates neurological damage and neuroinflammation during ischemic stroke remains unclear. We report that NLRP6 is abundantly expressed in microglia and significantly upregulated in the ischemic brain. The brain injury severity was alleviated in NLRP6-deficient mice after ischemic stroke, as evidenced by reduced cerebral infarct volume, decreased neurological deficit scores, improved histopathological morphological changes, ameliorated neuronal denaturation, and relief of sensorimotor dysfunction. In the co-culture OGD/R model, NLRP6 deficiency prevented neuronal death and attenuated microglial cell injury. NLRP6 deficiency blocked several NLRs inflammasomes' activation and abrogated inflammasome-related cytokine production by decreasing the expression of the common effector pro-caspase-1. NLRP6 deficiency reduced pro-caspase-1's protein level by inducing proteasomal degradation. These findings confirm the neuroprotective role of NLRP6 deficiency in ischemic stroke and its underlying regulation mechanism in neuroinflammation and provide a potential therapeutic target for ischemic stroke.
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Affiliation(s)
- Qi He
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400010, China; Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China
| | - Changchang Meng
- Zunyi Medical University Zhuhai Campus, Zhuhai, Guangdong Province 519000, China
| | - Mengjie Jia
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400010, China; Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China
| | - Junyi Tan
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400010, China; Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China
| | - Keli Huang
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400010, China; Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China
| | - Hui Gan
- Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China
| | - Lingyu Li
- Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China; Department of Pathology, Chongqing Medical University, Chongqing, 400010, China
| | - Jing Zhao
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400010, China; Center for Neuroscience Research, Chongqing Medical University, Chongqing 400010, China.
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30
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Lu X, Chen B, Xu D, Hu W, Wang X, Dai Y, Wang Q, Peng Y, Chen K, Zhao D, Wang H. Epigenetic programming mediates abnormal gut microbiota and disease susceptibility in offspring with prenatal dexamethasone exposure. Cell Rep Med 2024; 5:101398. [PMID: 38301654 PMCID: PMC10897547 DOI: 10.1016/j.xcrm.2024.101398] [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: 11/18/2022] [Revised: 05/08/2023] [Accepted: 01/08/2024] [Indexed: 02/03/2024]
Abstract
Prenatal dexamethasone exposure (PDE) can lead to increased susceptibility to various diseases in adult offspring, but its effect on gut microbiota composition and the relationship with disease susceptibility remains unclear. In this study, we find sex-differential changes in the gut microbiota of 6-month-old infants with prenatal dexamethasone therapy (PDT) that persisted in female infants up to 2.5 years of age with altered bile acid metabolism. PDE female offspring rats show abnormal colonization and composition of gut microbiota and increased susceptibility to cholestatic liver injury. The aberrant gut microbiota colonization in the PDE offspring can be attributed to the inhibited Muc2 expression caused by decreased CDX2 expression before and after birth. Integrating animal and cell experiments, we further confirm that dexamethasone could inhibit Muc2 expression by activating GR/HDAC11 signaling and regulating CDX2 epigenetic modification. This study interprets abnormal gut microbiota and disease susceptibility in PDT offspring from intrauterine intestinal dysplasia.
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Affiliation(s)
- Xiaoqian Lu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Beidi Chen
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - Dan Xu
- Department of Obstetrics and Gynaecology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Wen Hu
- Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan 430071, China
| | - Xia Wang
- Department of Pediatrics, Children's Digital Health, and Data Center, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yongguo Dai
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Qian Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Yu Peng
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Kaiqi Chen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Dongchi Zhao
- Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan 430071, China; Department of Pediatrics, Children's Digital Health, and Data Center, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China; Department of Obstetrics and Gynaecology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Diseases, Wuhan 430071, China.
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31
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Li R, Zan Y, Wang D, Chen X, Wang A, Tan H, Zhang G, Ding S, Shen C, Wu H, Zhu S. A mouse model to distinguish NLRP6-mediated inflammasome-dependent and -independent functions. Proc Natl Acad Sci U S A 2024; 121:e2321419121. [PMID: 38289959 PMCID: PMC10861855 DOI: 10.1073/pnas.2321419121] [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: 12/06/2023] [Accepted: 12/28/2023] [Indexed: 02/01/2024] Open
Abstract
The NOD-like receptor (NLR) family pyrin domain containing 6 (NLRP6) serves as a sensor for microbial dsRNA or lipoteichoic acid (LTA) in intestinal epithelial cells (IECs), and initiating multiple pathways including inflammasome pathway and type I interferon (IFN) pathway, or regulating nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) pathways. NLRP6 can exert its function in both inflammasome-dependent and inflammasome-independent manners. However, there is no tool to distinguish the contribution of individual NLRP6-mediated pathway to the physiology and pathology in vivo. Here, we validated that Arg39 and Trp50 residues in the pyrin domain (PYD) of murine NLRP6 are required for ASC recruitment and inflammasome activation, but are not important for the RNA binding and PYD-independent NLRP6 oligomerization. We further generated the Nlrp6R39E&W50E mutant mice, which showed reduced inflammasome activation in either steady state intestine or during viral infection. However, the type I IFN production in cells or intestine tissue from Nlrp6R39E&W50E mutant mice remain normal. Interestingly, NLRP6-mediated inflammasome activation or the IFN-I production seems to play distinct roles in the defense responses against different types of RNA viruses. Our work generated a useful tool to study the inflammasome-dependent role of NLRP6 in vivo, which might help to understand the complexity of multiple pathways mediated by NLRP6 in response to the complicated and dynamic environmental cues in the intestine.
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Affiliation(s)
- Runzhi Li
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Yang Zan
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Decai Wang
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei230051, China
| | - Xuequn Chen
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Anmin Wang
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Haoyuan Tan
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Guorong Zhang
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
| | - Siyuan Ding
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, MO63110
| | - Chen Shen
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, Saint Louis, MO63110
| | - Hao Wu
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA02115
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA02115
| | - Shu Zhu
- Department of Digestive Disease, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230001, China
- Institute of Immunology and the Chinese Academy of Sciences Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei230027, China
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei230051, China
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Frühbeck G, Gómez-Ambrosi J, Ramírez B, Becerril S, Rodríguez A, Mentxaka A, Valentí V, Moncada R, Reina G, Baixauli J, Casado M, Silva C, Escalada J, Catalán V. Decreased expression of the NLRP6 inflammasome is associated with increased intestinal permeability and inflammation in obesity with type 2 diabetes. Cell Mol Life Sci 2024; 81:77. [PMID: 38315242 PMCID: PMC10844155 DOI: 10.1007/s00018-024-05124-3] [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: 08/22/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 02/07/2024]
Abstract
BACKGROUND Obesity-associated dysfunctional intestinal permeability contributes to systemic chronic inflammation leading to the development of metabolic diseases. The inflammasomes constitute essential components in the regulation of intestinal homeostasis. We aimed to determine the impact of the inflammasomes in the regulation of gut barrier dysfunction and metabolic inflammation in the context of obesity and type 2 diabetes (T2D). METHODS Blood samples obtained from 80 volunteers (n = 20 normal weight, n = 21 OB without T2D, n = 39 OB with T2D) and a subgroup of jejunum samples were used in a case-control study. Circulating levels of intestinal damage markers and expression levels of inflammasomes as well as their main effectors (IL-1β and IL-18) and key inflammation-related genes were analyzed. The impact of inflammation-related factors, different metabolites and Akkermansia muciniphila in the regulation of inflammasomes and intestinal integrity genes was evaluated. The effect of blocking NLRP6 by using siRNA in inflammation was also studied. RESULTS Increased circulating levels (P < 0.01) of the intestinal damage markers endotoxin, LBP, and zonulin in patients with obesity decreased (P < 0.05) after weight loss. Patients with obesity and T2D exhibited decreased (P < 0.05) jejunum gene expression levels of NLRP6 and its main effector IL18 together with increased (P < 0.05) mRNA levels of inflammatory markers. We further showed that while NLRP6 was primarily localized in goblet cells, NLRP3 was localized in the intestinal epithelial cells. Additionally, decreased (P < 0.05) mRNA levels of Nlrp1, Nlrp3 and Nlrp6 in the small intestinal tract obtained from rats with diet-induced obesity were found. NLRP6 expression was regulated by taurine, parthenolide and A. muciniphila in the human enterocyte cell line CCL-241. Finally, a significant decrease (P < 0.01) in the expression and release of MUC2 after the knockdown of NLRP6 was observed. CONCLUSIONS The increased levels of intestinal damage markers together with the downregulation of NLRP6 and IL18 in the jejunum in obesity-associated T2D suggest a defective inflammasome sensing, driving to an impaired epithelial intestinal barrier that may regulate the progression of multiple obesity-associated comorbidities.
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Affiliation(s)
- Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain.
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain.
| | - Javier Gómez-Ambrosi
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Beatriz Ramírez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Sara Becerril
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Amaia Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
| | - Amaia Mentxaka
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
| | - Víctor Valentí
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Rafael Moncada
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
- Department of Anesthesia, Clínica Universidad de Navarra, Pamplona, Spain
| | - Gabriel Reina
- Department of Microbiology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Jorge Baixauli
- Department of Surgery, Clínica Universidad de Navarra, Pamplona, Spain
| | - Marcos Casado
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain
| | - Camilo Silva
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Javier Escalada
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain
- Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
| | - Victoria Catalán
- Metabolic Research Laboratory, Clínica Universidad de Navarra, Avda. Pío XII, 36, 31008, Pamplona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Pamplona, Spain.
- Obesity and Adipobiology Group, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain.
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Pardy RD, Wallbank BA, Striepen B, Hunter CA. Immunity to Cryptosporidium: insights into principles of enteric responses to infection. Nat Rev Immunol 2024; 24:142-155. [PMID: 37697084 DOI: 10.1038/s41577-023-00932-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2023] [Indexed: 09/13/2023]
Abstract
Cryptosporidium parasites replicate within intestinal epithelial cells and are an important cause of diarrhoeal disease in young children and in patients with primary and acquired defects in T cell function. This Review of immune-mediated control of Cryptosporidium highlights advances in understanding how intestinal epithelial cells detect this infection, the induction of innate resistance and the processes required for activation of T cell responses that promote parasite control. The development of a genetic tool set to modify Cryptosporidium combined with tractable mouse models provide new opportunities to understand the principles that govern the interface between intestinal epithelial cells and the immune system that mediate resistance to enteric pathogens.
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Affiliation(s)
- Ryan D Pardy
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Bethan A Wallbank
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Boris Striepen
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Christopher A Hunter
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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Hassan HA, Mohamed Abdelhamid A, Samy W, Osama Mohammed H, Mortada Mahmoud S, Fawzy Abdel Mageed A, Abbas NAT. Ameliorative effects of androstenediol against acetic acid-induced colitis in male wistar rats via inhibiting TLR4-mediated PI3K/Akt and NF-κB pathways through estrogen receptor β activation. Int Immunopharmacol 2024; 127:111414. [PMID: 38141404 DOI: 10.1016/j.intimp.2023.111414] [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: 09/27/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/25/2023]
Abstract
5-androstenediol (ADIOL) functions as a selective estrogen receptor β (ERβ) ligand with a protective effect against many diseases. So, we conducted a novel insight into its role in acetic acid (AA)-induced colitis and investigated its effect on TLR4-Mediated PI3K/Akt and NF-κB Pathways and the potential role of ERβ as contributing mechanisms. METHODS Rats were randomized into 5 Groups; Control, Colitis, Colitis + mesalazine (MLZ), Colitis + ADIOL, and Colitis + ADIOL + PHTPP (ER-β antagonist). The colitis was induced through a rectal enema of acetic acid (AA) on the 8th day. At the end of treatment, colons were collected for macroscopic assessment. Tissue levels of malondialdehyde (MDA), superoxide dismutase (SOD), nuclear factor kappa b (NF-κB), toll-like receptor (TLR4), and phosphorylated Protein kinase B (pAKT) were measured. Besides, Gene expression of interleukin-1beta (IL-1β), metalloproteases 9 (Mmp9), inositol 3 phosphate kinase (PI3K), Neutrophil gelatinase-associated lipocalin (NGAL), ERβ and NLRP6 were assessed. Histopathological and immunohistochemical studies were also investigated. RESULTS Compared to the untreated AA group, the disease activity index (DAI) and macroscopic assessment indicators significantly decreased with ADIOL injections. Indeed, ADIOL significantly decreased colonic tissue levels of MDA, TLR4, pAKT, and NF-κB immunostainig while increased SOD activity and β catenin immunostainig. ADIOL mitigated the high genetic expressions of IL1β, NGAL, MMP9, and PI3K while increased ERβ and NLRP6 gene expression. Also, the pathological changes detected in AA groups were markedly ameliorated with ADIOL. The specific ERβ antagonist, PHTPP, largely diminished these protective effects of ADIOL. CONCLUSION ADIOL could be beneficial against AA-induced colitis mostly through activating ERβ.
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Affiliation(s)
- Heba A Hassan
- Clinical Pharmacology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt; Pharmacology Department, Faculty of Medicine, Mutah University, Mutah, Al-karak 61710, Jordan.
| | - Amira Mohamed Abdelhamid
- Clinical Pharmacology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt.
| | - Walaa Samy
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine -Zagazig University, Zagazig 45519, Egypt.
| | - Heba Osama Mohammed
- Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt.
| | - Samar Mortada Mahmoud
- Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt.
| | - Amal Fawzy Abdel Mageed
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine -Zagazig University, Zagazig 45519, Egypt.
| | - Noha A T Abbas
- Clinical Pharmacology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt.
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Yao J, Sterling K, Wang Z, Zhang Y, Song W. The role of inflammasomes in human diseases and their potential as therapeutic targets. Signal Transduct Target Ther 2024; 9:10. [PMID: 38177104 PMCID: PMC10766654 DOI: 10.1038/s41392-023-01687-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 09/18/2023] [Accepted: 10/13/2023] [Indexed: 01/06/2024] Open
Abstract
Inflammasomes are large protein complexes that play a major role in sensing inflammatory signals and triggering the innate immune response. Each inflammasome complex has three major components: an upstream sensor molecule that is connected to a downstream effector protein such as caspase-1 through the adapter protein ASC. Inflammasome formation typically occurs in response to infectious agents or cellular damage. The active inflammasome then triggers caspase-1 activation, followed by the secretion of pro-inflammatory cytokines and pyroptotic cell death. Aberrant inflammasome activation and activity contribute to the development of diabetes, cancer, and several cardiovascular and neurodegenerative disorders. As a result, recent research has increasingly focused on investigating the mechanisms that regulate inflammasome assembly and activation, as well as the potential of targeting inflammasomes to treat various diseases. Multiple clinical trials are currently underway to evaluate the therapeutic potential of several distinct inflammasome-targeting therapies. Therefore, understanding how different inflammasomes contribute to disease pathology may have significant implications for developing novel therapeutic strategies. In this article, we provide a summary of the biological and pathological roles of inflammasomes in health and disease. We also highlight key evidence that suggests targeting inflammasomes could be a novel strategy for developing new disease-modifying therapies that may be effective in several conditions.
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Affiliation(s)
- Jing Yao
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Keenan Sterling
- Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Zhe Wang
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yun Zhang
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, P.R. China.
| | - Weihong Song
- The National Clinical Research Center for Geriatric Disease, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.
- Zhejiang Clinical Research Center for Mental Disorders, Key Laboratory of Alzheimer's Disease of Zhejiang Province, School of Mental Health and The Affiliated Kangning Hospital, Institute of Aging, Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang, 325000, China.
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36
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Kim ME, Lee JS. Molecular Foundations of Inflammatory Diseases: Insights into Inflammation and Inflammasomes. Curr Issues Mol Biol 2024; 46:469-484. [PMID: 38248332 PMCID: PMC10813887 DOI: 10.3390/cimb46010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Inflammatory diseases are a global health problem affecting millions of people with a wide range of conditions. These diseases, including inflammatory bowel disease (IBD), rheumatoid arthritis (RA), osteoarthritis (OA), gout, and diabetes, impose a significant burden on patients and healthcare systems. A complicated interaction between genetic variables, environmental stimuli, and dysregulated immune responses shows the complex biological foundation of various diseases. This review focuses on the molecular mechanisms underlying inflammatory diseases, including the function of inflammasomes and inflammation. We investigate the impact of environmental and genetic factors on the progression of inflammatory diseases, explore the connection between inflammation and inflammasome activation, and examine the incidence of various inflammatory diseases in relation to inflammasomes.
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Affiliation(s)
| | - Jun Sik Lee
- Department of Biological Science, Immunology Research Lab & BK21-Four Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea;
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Hao M, Zhong K, Bai X, Wu S, Li L, He Y, Wang Z, Sun X, Wang Q, Guo Y, Sun Y, Wu L. Upregulated Tβ4 expression in inflammatory bowel disease impairs the intestinal mucus barrier by inhibiting autophagy in mice. Exp Cell Res 2024; 434:113871. [PMID: 38049080 DOI: 10.1016/j.yexcr.2023.113871] [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: 09/11/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023]
Abstract
Disrupted intestinal barrier homeostasis is fundamental to inflammatory bowel disease. Thymosin β4 (Tβ4) improves inflammation and has beneficial effects in dry-eye diseases, but its effects on the intestinal mucus barrier remain unknown. Therefore, this study evaluated the underlying regulatory mechanisms and effects of Tβ4 by examining Tβ4 expression in a mouse model with dextran sodium sulfate (DSS)-induced colitis and colonic barrier damage. Additionally, we intraperitoneally injected C57BL/6 mice with Tβ4 to assess barrier function, microtubule-associated protein 1 light chain 3 (LC3II) protein expression, and autophagy. Finally, normal human colon tissue and colon carcinoma cells (Caco2) were cultured to verify Tβ4-induced barrier function and autophagy changes. Mucin2 levels decreased, microbial infiltration increased, and Tβ4 expression increased in the colitis mouse model versus the control mice, indicating mucus barrier damage. Moreover, Tβ4-treated C57BL/6 mice had damaged intestinal mucus barriers and decreased LC3II levels. Tβ4 also inhibited colonic mucin2 production, disrupted tight junctions, and downregulated autophagy; these results were confirmed in Caco2 cells and normal human colon tissue. In summary, Tβ4 may be implicated in colitis by compromising the integrity of the intestinal mucus barrier and inhibiting autophagy. Thus, Tβ4 could be a new diagnostic marker for intestinal barrier defects.
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Affiliation(s)
- Menghao Hao
- School of Medicine, Southwest Jiaotong University, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China; Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Ke Zhong
- Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Xiaoqin Bai
- Medical Research Center, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Shiyan Wu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Lu Li
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Yumei He
- North Sichuan Medical College, Nanchong, 637000, China
| | - Zhiming Wang
- Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Xiaobin Sun
- Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Qiong Wang
- Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Yuanbiao Guo
- Medical Research Center, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China
| | - Yueshan Sun
- Medical Research Center, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China.
| | - Liping Wu
- Department of Gastroenterology, The Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu, 610031, China.
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38
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Nascimento M, Huot-Marchand S, Fanny M, Straube M, Le Bert M, Savigny F, Apetoh L, Van Snick J, Trovero F, Chamaillard M, Quesniaux VFJ, Ryffel B, Gosset P, Gombault A, Riteau N, Sokol H, Couillin I. NLRP6 controls pulmonary inflammation from cigarette smoke in a gut microbiota-dependent manner. Front Immunol 2023; 14:1224383. [PMID: 38146368 PMCID: PMC10749332 DOI: 10.3389/fimmu.2023.1224383] [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: 05/17/2023] [Accepted: 11/20/2023] [Indexed: 12/27/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a major health issue primarily caused by cigarette smoke (CS) and characterized by breathlessness and repeated airway inflammation. NLRP6 is a cytosolic innate receptor controlling intestinal inflammation and orchestrating the colonic host-microbial interface. However, its roles in the lungs remain largely unexplored. Using CS exposure models, our data show that airway inflammation is strongly impaired in Nlrp6-deficient mice with drastically fewer recruited neutrophils, a key cell subset in inflammation and COPD. We found that NLRP6 expression in lung epithelial cells is important to control airway and lung tissue inflammation in an inflammasome-dependent manner. Since gut-derived metabolites regulate NLRP6 inflammasome activation in intestinal epithelial cells, we investigated the link between NLRP6, CS-driven lung inflammation, and gut microbiota composition. We report that acute CS exposure alters gut microbiota in both wild-type (WT) and Nlrp6-deficient mice and that antibiotic treatment decreases CS-induced lung inflammation. In addition, gut microbiota transfer from dysbiotic Nlrp6-deficient mice to WT mice decreased airway lung inflammation in WT mice, highlighting an NLRP6-dependent gut-to-lung axis controlling pulmonary inflammation.
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Affiliation(s)
- Mégane Nascimento
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Sarah Huot-Marchand
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Manoussa Fanny
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Marjolène Straube
- Sorbonne Université, Institut National de la Recherche Médicale (INSERM), Centre de Recherche Saint-Antoine (CRSA), Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint Antoine, Service de Gastroenterologie, Paris, France
| | - Marc Le Bert
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Florence Savigny
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | | | | | | | - Mathias Chamaillard
- Univ. Lille, Institut National de la Recherche Médicale (INSERM), U1003 - Laboratoire de physiologie cellulaire (PHYCEL) - Physiologie Cellulaire, Lille, France
| | - Valérie F. J. Quesniaux
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Bernhard Ryffel
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Philippe Gosset
- Institut PASTEUR INSERM U1019, Centre National de Recherche (CNRS) Unité Mixte de Recherche (UMR) 8204, Lille, France
| | - Aurélie Gombault
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Nicolas Riteau
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
| | - Harry Sokol
- Sorbonne Université, Institut National de la Recherche Médicale (INSERM), Centre de Recherche Saint-Antoine (CRSA), Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint Antoine, Service de Gastroenterologie, Paris, France
- Institut national de la recherche agronomique (INRA), UMR1319 Micalis, AgroParisTech, Jouy-en-Josas, France
- Paris Centre for Microbiome Medicine (PaCeMM) FHU, Paris, France
| | - Isabelle Couillin
- University of Orleans and Centre National de Recherche scientifique (CNRS), Experimental and Molecular Immunology and Neurogenetics (INEM)-UMR7355, Orleans, France
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Shao T, Hsu R, Rafizadeh DL, Wang L, Bowlus CL, Kumar N, Mishra J, Timilsina S, Ridgway WM, Gershwin ME, Ansari AA, Shuai Z, Leung PSC. The gut ecosystem and immune tolerance. J Autoimmun 2023; 141:103114. [PMID: 37748979 DOI: 10.1016/j.jaut.2023.103114] [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: 08/09/2023] [Revised: 09/12/2023] [Accepted: 09/12/2023] [Indexed: 09/27/2023]
Abstract
The gastrointestinal tract is home to the largest microbial population in the human body. The gut microbiota plays significant roles in the development of the gut immune system and has a substantial impact on the maintenance of immune tolerance beginning in early life. These microbes interact with the immune system in a dynamic and interdependent manner. They generate immune signals by presenting a vast repertoire of antigenic determinants and microbial metabolites that influence the development, maturation and maintenance of immunological function and homeostasis. At the same time, both the innate and adaptive immune systems are involved in modulating a stable microbial ecosystem between the commensal and pathogenic microorganisms. Hence, the gut microbial population and the host immune system work together to maintain immune homeostasis synergistically. In susceptible hosts, disruption of such a harmonious state can greatly affect human health and lead to various auto-inflammatory and autoimmune disorders. In this review, we discuss our current understanding of the interactions between the gut microbiota and immunity with an emphasis on: a) important players of gut innate and adaptive immunity; b) the contribution of gut microbial metabolites; and c) the effect of disruption of innate and adaptive immunity as well as alteration of gut microbiome on the molecular mechanisms driving autoimmunity in various autoimmune diseases.
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Affiliation(s)
- Tihong Shao
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China; Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Ronald Hsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Desiree L Rafizadeh
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Li Wang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Beijing, China
| | - Christopher L Bowlus
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Narendra Kumar
- Department of Pharmaceutical Science, ILR-College of Pharmacy, Texas A&M University, 1010 W. Ave B. MSC 131, Kingsville, TX, 78363, USA
| | - Jayshree Mishra
- Department of Pharmaceutical Science, ILR-College of Pharmacy, Texas A&M University, 1010 W. Ave B. MSC 131, Kingsville, TX, 78363, USA
| | - Suraj Timilsina
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - William M Ridgway
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - M Eric Gershwin
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Aftab A Ansari
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA
| | - Zongwen Shuai
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China.
| | - Patrick S C Leung
- Division of Rheumatology/Allergy and Clinical Immunology, Department of Internal Medicine, University of California, Davis, CA, 95616, USA.
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40
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Wan T, Wang Y, He K, Zhu S. Microbial sensing in the intestine. Protein Cell 2023; 14:824-860. [PMID: 37191444 PMCID: PMC10636641 DOI: 10.1093/procel/pwad028] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/04/2023] [Indexed: 05/17/2023] Open
Abstract
The gut microbiota plays a key role in host health and disease, particularly through their interactions with the immune system. Intestinal homeostasis is dependent on the symbiotic relationships between the host and the diverse gut microbiota, which is influenced by the highly co-evolved immune-microbiota interactions. The first step of the interaction between the host and the gut microbiota is the sensing of the gut microbes by the host immune system. In this review, we describe the cells of the host immune system and the proteins that sense the components and metabolites of the gut microbes. We further highlight the essential roles of pattern recognition receptors (PRRs), the G protein-coupled receptors (GPCRs), aryl hydrocarbon receptor (AHR) and the nuclear receptors expressed in the intestinal epithelial cells (IECs) and the intestine-resident immune cells. We also discuss the mechanisms by which the disruption of microbial sensing because of genetic or environmental factors causes human diseases such as the inflammatory bowel disease (IBD).
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Affiliation(s)
- Tingting Wan
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Yalong Wang
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Kaixin He
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Shu Zhu
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
- Department of Digestive Disease, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei 230001, China
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei 230601, China
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41
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Liu G, Yu Q, Zhu H, Tan B, Yu H, Li X, Lu Y, Li H. Amyloid-β mediates intestinal dysfunction and enteric neurons loss in Alzheimer's disease transgenic mouse. Cell Mol Life Sci 2023; 80:351. [PMID: 37930455 PMCID: PMC11072809 DOI: 10.1007/s00018-023-04948-9] [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: 06/20/2022] [Revised: 06/02/2023] [Accepted: 06/21/2023] [Indexed: 11/07/2023]
Abstract
Alzheimer's disease (AD) is traditionally considered as a brain disorder featured by amyloid-β (Aβ) deposition. The current study on whether pathological changes of AD extend to the enteric nervous system (ENS) is still in its infancy. In this study, we found enteric Aβ deposition, intestinal dysfunction, and colonic inflammation in the young APP/PS1 mice. Moreover, these mice exhibited cholinergic and nitrergic signaling pathways damages and enteric neuronal loss. Our data show that Aβ42 treatment remarkably affected the gene expression of cultured myenteric neurons and the spontaneous contraction of intestinal smooth muscles. The intra-colon administration of Aβ42 induced ENS dysfunction, brain gliosis, and β-amyloidosis-like changes in the wild-type mice. Our results suggest that ENS mirrors the neuropathology observed in AD brains, and intestinal pathological changes may represent the prodromal events, which contribute to brain pathology in AD. In summary, our findings provide new opportunities for AD early diagnosis and prevention.
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Affiliation(s)
- Guoqiang Liu
- Medical College, Hubei University for Nationalities, Enshi, 445000, Hubei, China
| | - Quntao Yu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Houze Zhu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Bo Tan
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hongyan Yu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xinyan Li
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Youming Lu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 4030030, China.
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Hao Li
- Wuhan Center of Brain Science, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Department of Pathophysiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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42
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Mao A, Zhao W, Zhu Y, Kong F, Chen D, Si H, Xu C. Gut Bacterial Community Determines the Therapeutic Effect of Ginsenoside on Canine Inflammatory Bowel Disease by Modulating the Colonic Mucosal Barrier. Microorganisms 2023; 11:2616. [PMID: 38004628 PMCID: PMC10672857 DOI: 10.3390/microorganisms11112616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 11/26/2023] Open
Abstract
Inflammatory bowel disease (IBD) comprises systemic inflammatory conditions primarily affecting the gastrointestinal tract, including Crohn's disease and ulcerative colitis. This research aims to analyze the clinical symptoms and pathogenesis of a Dextran sodium sulfate (DSS)-induced canine IBD model and evaluate the restorative effect of ginsenoside from a pathogenesis perspective. We established the DSS-induced canine IBD model and studied the pathological mechanisms. Additionally, we examined the therapeutic effect of ginsenosides by assessing the Canine Inflammatory Bowel Disease Activity Index (CIBDAI), C-reactive protein (CRP) levels, colonic tissue morphology, protein expression, and mucosal bacterial community analysis. Our findings revealed a total ginsenoside content of 22.7% in the ginsenoside extract. Animal experiments demonstrated that dogs with IBD exhibited decreased mental state, significantly increased CIBDAI and CRP levels, disrupted colonic epithelial tissue structure, decreased expression of mucin, tight junctions, and adherens junctions, as well as reduced diversity of the colonic mucosal bacterial community. Furthermore, correlation analysis highlighted a total of 38 bacterial strains correlated with physiological indices. Significantly, ginsenoside treatment could improve these symptoms and reverse the relative abundance of some bacterial communities. In conclusion, alterations in the properties of the colonic mucus layer or the reduction in MUC2, its core component, in dogs with IBD can lead to bacterial penetration of the mucus layer and subsequent contact with intestinal epithelial cells, resulting in inflammation. Remarkably, ginsenoside intervention showcased the capacity to positively influence the relative abundance of bacteria and impact the colonic mucus layer properties, thereby offering promising prospects for IBD management and recovery.
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Affiliation(s)
- Aipeng Mao
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Weigang Zhao
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Yuhang Zhu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
| | - Fantao Kong
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Danyang Chen
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
| | - Huazhe Si
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;
| | - Chao Xu
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Research Center for Microbial Feed Engineering of Special Animals in Jilin Province, Innovation Center for Feeding and Utilization of Special Animals in Jilin Province, Changchun 130112, China; (A.M.); (W.Z.); (F.K.); (D.C.)
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Wang H, Huang X, Xia S, Chen C, Chen X, Zhang Y, Farag MA, Xiao J, Nie S. Celery soluble dietary fiber antagonizes flavonoids ameliorative effect on dextran-sodium-sulfate-induced colitis in mice. J Adv Res 2023; 52:73-88. [PMID: 36693567 PMCID: PMC10556043 DOI: 10.1016/j.jare.2023.01.013] [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: 10/04/2022] [Revised: 12/30/2022] [Accepted: 01/14/2023] [Indexed: 01/22/2023] Open
Abstract
INTRODUCTION Dietary fiber and flavonoids are promising drugs reported in the treatment of inflammatory bowel disease (IBD). However, it is unclear the interaction between dietary fiber and flavonoids in gut health. OBJECTIVE The therapeutic effect of celery, kale, and red chicory powders on colitis mice using non-group feeding cages was investigated. Further, the efficacy of whole celery, celery soluble dietary fiber (CSDF), celery insoluble dietary fiber (CIDF), celery flavonoids (CF), CSDF + CF and CIDF + CF in IBD mice model was assessed to dissect protective effect to attribute to which component(s) in such complex matrix. METHODS 3% Dextran sulfate sodium salt (DSS) was used to induce mice colitis model. Multiple molecular biological methods were employed to evaluate the severity of mice colitis and the gut microbial composition of mice. RESULTS Administration of kale and red chicory significantly restored body weight, DAI score, and colon length in colonic mice, and celery showed the weakest effects. Administration of either CSDF or CF markedly improved the histological damage, increased colonic mucus expression, and reduced colonic MPO/iNOS activities, and IL-6/IL-1β levels. However, CSDF + CF showed weaker improvement than CF or SDF in most physical and biochemical signs. Furthermore, CSDF and CF decreased intestinal g_Escherichia-Shihella and g_Clostridium_sensu_stricto_1 induced by DSS administration. Interestingly, celery flavonoid promoted g_Akkermansia proliferation both in vivo and in vitro, and which can be inhibited by CSDF. CONCLUSIONS This study revealed for the first time that CSDF can suppress the protective effect of CF on intestinal health by inhibiting g_Akkermansia, and clarified that the decreased efficacy of celery whole food on colitis was mediated by an antagonism between CSDF and CF. Moreover, this study presents for the first time that interaction between soluble dietary fiber and flavonoids in vivo can ameliorate the efficacy of dietary fiber or flavonoids when administered alone suggestive for an antagonistic effect.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Xiaojun Huang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Shengkun Xia
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Chunhua Chen
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Xiaomin Chen
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Yanli Zhang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St., P.B. 11562 Cairo, Egypt
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, Ourense, Spain.
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, 235 Nanjing East Road, Nanchang 330047, China.
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Chou WC, Jha S, Linhoff MW, Ting JPY. The NLR gene family: from discovery to present day. Nat Rev Immunol 2023; 23:635-654. [PMID: 36973360 PMCID: PMC11171412 DOI: 10.1038/s41577-023-00849-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2023] [Indexed: 03/29/2023]
Abstract
The mammalian NLR gene family was first reported over 20 years ago, although several genes that were later grouped into the family were already known at that time. Although it is widely known that NLRs include inflammasome receptors and/or sensors that promote the maturation of caspase 1, IL-1β, IL-18 and gasdermin D to drive inflammation and cell death, the other functions of NLR family members are less well appreciated by the scientific community. Examples include MHC class II transactivator (CIITA), a master transcriptional activator of MHC class II genes, which was the first mammalian NBD-LRR-containing protein to be identified, and NLRC5, which regulates the expression of MHC class I genes. Other NLRs govern key inflammatory signalling pathways or interferon responses, and several NLR family members serve as negative regulators of innate immune responses. Multiple NLRs regulate the balance of cell death, cell survival, autophagy, mitophagy and even cellular metabolism. Perhaps the least discussed group of NLRs are those with functions in the mammalian reproductive system. The focus of this Review is to provide a synopsis of the NLR family, including both the intensively studied and the underappreciated members. We focus on the function, structure and disease relevance of NLRs and highlight issues that have received less attention in the NLR field. We hope this may serve as an impetus for future research on the conventional and non-conventional roles of NLRs within and beyond the immune system.
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Affiliation(s)
- Wei-Chun Chou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sushmita Jha
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Michael W Linhoff
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Jenny P-Y Ting
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Liu Y, Sheng X, Tang X, Xing J, Chi H, Zhan W. Genome-wide identification, phylogenetic relationships and expression patterns of the NOD-like receptor (NLR) gene family in flounder (Paralichthys olivaceus). FISH & SHELLFISH IMMUNOLOGY 2023; 141:109083. [PMID: 37722442 DOI: 10.1016/j.fsi.2023.109083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
NOD-like receptors (NLRs) are one of the pattern recognition receptors which have been widely known for identifying pathogens and regulating innate immunity in mammals, but the functions of the NLR gene family in teleost fish remain poorly understood. In this study, we conducted a comprehensive identification and analysis of the flounder (Paralichthys olivaceus) NLR gene family, including bioinformatics information, evolutionary relationships, gene structures, conserved motifs, domain composition, expression patterns and protein-protein interaction (PPI). We identified 22 NLRs in flounder (flNLRs) which were clustered into three subfamilies according to their domain organizations and phylogenetic features, i.e., NLR-A (6 members) resembling mammalian NODs, NLR-B (1 member) resembling mammalian NLRPs, and NLR-C (15 members) unique to teleost fish. All flNLRs shared a conserved NACHT domain including an N-terminal nucleotide-binding domain, a middle helical domain 1, and a winged helix domain. Gene structure analysis displayed that flNLRs were significantly different, with exon numbers from 1 to 52. Conserved domain analysis showed that the N-terminus of flNLRs possessed different characteristics of the domains including CARD domain, PYRIN domain, RING domain, and fish-specific FISNA domain, and the C-terminus of seven NLR-C members contained an extra B30.2 domain, named NLRC-B30.2 group. Notably, flNLRs were expressed in all nine tested tissues, showing higher expressions in the systemic and mucosal immune tissues (e.g., kidney, spleen, hindgut, gills, skin, liver) in healthy flounder, and significant responses to intraperitoneal injection and immersion immunization of inactivated Vibrio anguillarum in mucosal tissues, especially the NLR-C members. In addition, PPI analysis demonstrated that some flNLRs of NLR-A and NLR-C shared the same interacting proteins such as RIPK2, TRAF6, MAVS, CASP, ASC, and ATG5, suggesting they might play crucial roles in host defense, antiviral innate immunity, inflammation, apoptosis and autophagy. This study for the first time characterized the NLR gene family of flounder at the genome-wide level, and the results provided a better understanding of the evolution of the NLR gene family and their immune functions in innate immunity in fish.
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Affiliation(s)
- Yingqin Liu
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China.
| | - Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China
| | - Jing Xing
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China
| | - Heng Chi
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China
| | - Wenbin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, KLMME, Ocean University of China, Qingdao, 266003, PR China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, PR China
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Zhi F, Li B, Zhang C, Xia F, Wang R, Xie W, Cai S, Zhang D, Kong R, Hu Y, Yang Y, Peng Y, Cui J. NLRP6 potentiates PI3K/AKT signalling by promoting autophagic degradation of p85α to drive tumorigenesis. Nat Commun 2023; 14:6069. [PMID: 37770465 PMCID: PMC10539329 DOI: 10.1038/s41467-023-41739-z] [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: 10/03/2022] [Accepted: 09/01/2023] [Indexed: 09/30/2023] Open
Abstract
The PI3K/AKT pathway plays an essential role in tumour development. NOD-like receptors (NLRs) regulate innate immunity and are implicated in cancer, but whether they are involved in PI3K/AKT pathway regulation is poorly understood. Here, we report that NLRP6 potentiates the PI3K/AKT pathway by binding and destabilizing p85α, the regulatory subunit of PI3K. Mechanistically, NLRP6 recruits the E3 ligase RBX1 to p85α and ubiquitinates lysine 256 on p85α, which is recognized by the autophagy cargo receptor OPTN, causing selective autophagic degradation of p85α and subsequent activation of the PI3K/AKT pathway by reducing PTEN stability. We further show that loss of NLRP6 suppresses cell proliferation, colony formation, cell migration, and tumour growth in glioblastoma cells in vitro and in vivo. Disruption of the NLRP6/p85α interaction using the Pep9 peptide inhibits the PI3K/AKT pathway and generates potent antitumour effects. Collectively, our results suggest that NLRP6 promotes p85α degradation via selective autophagy to drive tumorigenesis, and the interaction between NLRP6 and p85α can be a promising therapeutic target for tumour treatment.
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Affiliation(s)
- Feng Zhi
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Bowen Li
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Chuanxia Zhang
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Medical Research Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Fan Xia
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rong Wang
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Weihong Xie
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Sihui Cai
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Dawei Zhang
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou, Jiangsu, China
| | - Ren Kong
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou, Jiangsu, China
| | - Yiqiao Hu
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School and School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
| | - Yilin Yang
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Ya Peng
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
| | - Jun Cui
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
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Li WS, Zhang QQ, Li Q, Liu SY, Yuan GQ, Pan YW. Innate immune response restarts adaptive immune response in tumors. Front Immunol 2023; 14:1260705. [PMID: 37781382 PMCID: PMC10538570 DOI: 10.3389/fimmu.2023.1260705] [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: 07/20/2023] [Accepted: 08/25/2023] [Indexed: 10/03/2023] Open
Abstract
The imbalance of immune response plays a crucial role in the development of diseases, including glioblastoma. It is essential to comprehend how the innate immune system detects tumors and pathogens. Endosomal and cytoplasmic sensors can identify diverse cancer cell antigens, triggering the production of type I interferon and pro-inflammatory cytokines. This, in turn, stimulates interferon stimulating genes, enhancing the presentation of cancer antigens, and promoting T cell recognition and destruction of cancer cells. While RNA and DNA sensing of tumors and pathogens typically involve different receptors and adapters, their interaction can activate adaptive immune response mechanisms. This review highlights the similarity in RNA and DNA sensing mechanisms in the innate immunity of both tumors and pathogens. The aim is to enhance the anti-tumor innate immune response, identify regions of the tumor that are not responsive to treatment, and explore new targets to improve the response to conventional tumor therapy and immunotherapy.
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Affiliation(s)
- Wen-shan Li
- The Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Neurology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Department of Neurosurgery, Qinghai Provincial People’s Hospital, Xining, Qinghai, China
| | - Qing-qing Zhang
- Department of Respiratory and Critical Care Medicine, Qinghai University Affiliated Hospital, Xining, Qinghai, China
| | - Qiao Li
- The Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Neurology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Shang-yu Liu
- The Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Neurology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Guo-qiang Yuan
- The Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Neurology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Ya-wen Pan
- The Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
- Key Laboratory of Neurology of Gansu Province, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China
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Zhou F, Zhang GD, Tan Y, Hu SA, Tang Q, Pei G. NOD-like receptors mediate homeostatic intestinal epithelial barrier function: promising therapeutic targets for inflammatory bowel disease. Therap Adv Gastroenterol 2023; 16:17562848231176889. [PMID: 37701792 PMCID: PMC10493068 DOI: 10.1177/17562848231176889] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 05/01/2023] [Indexed: 09/14/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic gastrointestinal inflammatory disease that involves host genetics, the microbiome, and inflammatory responses. The current consensus is that the disruption of the intestinal mucosal barrier is the core pathogenesis of IBD, including intestinal microbial factors, abnormal immune responses, and impaired intestinal mucosal barrier. Cumulative data show that nucleotide-binding and oligomerization domain (NOD)-like receptors (NLRs) are dominant mediators in maintaining the homeostasis of the intestinal mucosal barrier, which play critical roles in sensing the commensal microbiota, maintaining homeostasis, and regulating intestinal inflammation. Blocking NLRs inflammasome activation by botanicals may be a promising way to prevent IBD progression. In this review, we systematically introduce the multiple roles of NLRs in regulating intestinal mucosal barrier homeostasis and focus on summarizing the activities and potential mechanisms of natural products against IBD. Aiming to propose new directions on the pathogenesis and precise treatment of IBD.
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Affiliation(s)
- Feng Zhou
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Key Laboratory of Modern Research of TCM, Education Department of Hunan Province, Changsha, China
| | | | - Yang Tan
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Science and Technology Innovation Center/State Key Laboratory Breeding Base of Chinese Medicine Powder and Innovative Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Shi An Hu
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
- Hunan Provincial Key Laboratory of TCM Prevention and Treatment of Depression Diseases, Changsha, China
| | - Qun Tang
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
- Medical School, Hunan University of Chinese Medicine, Changsha, China
| | - Gang Pei
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China
- Key Laboratory of Modern Research of TCM, Education Department of Hunan Province, Changsha, China
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49
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Inaba R, Vujakovic S, Bergstrom K. The gut mucus network: A dynamic liaison between microbes and the immune system. Semin Immunol 2023; 69:101807. [PMID: 37478802 DOI: 10.1016/j.smim.2023.101807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 06/24/2023] [Accepted: 07/08/2023] [Indexed: 07/23/2023]
Abstract
A complex mucus network made up of large polymers of the mucin-family glycoprotein MUC2 exists between the large intestinal microbial mass and epithelial and immune cells. This has long been understood as an innate immune defense barrier against the microbiota and other luminal threats that reinforces the barrier function of the epithelium and limits microbiota contact with the tissues. However, past and recent studies have provided new evidence of how critical the mucus network is to act as a 'liaison' between host and microbe to mediate anti-inflammatory, mutualistic interactions with the microbiota and protection from pathogens. This review summarizes historical and recent insights into the formation of the gut mucus network, how the microbes and immune system influence mucus, and in turn, how the mucus influences immune responses to the microbiota.
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Affiliation(s)
- Rain Inaba
- Department of Biology, University of British Columbia, Okanagan Campus, 3187 University Way, Kelowna V1V 1V7, British Columbia, Canada
| | - Sara Vujakovic
- Department of Biology, University of British Columbia, Okanagan Campus, 3187 University Way, Kelowna V1V 1V7, British Columbia, Canada
| | - Kirk Bergstrom
- Department of Biology, University of British Columbia, Okanagan Campus, 3187 University Way, Kelowna V1V 1V7, British Columbia, Canada.
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Jiang Q, Zhu Z, Mao X. Ubiquitination is a major modulator for the activation of inflammasomes and pyroptosis. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2023; 1866:194955. [PMID: 37331650 DOI: 10.1016/j.bbagrm.2023.194955] [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: 12/09/2022] [Revised: 05/25/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023]
Abstract
Inflammasomes are a central node of the innate immune defense system against the threat of homeostatic perturbance caused by pathogenic organisms or host-derived molecules. Inflammasomes are generally composed of multimeric protein complexes that assemble in the cytosol after sensing danger signals. Activated inflammasomes promote downstream proteolytic activation, which triggers the release of pro-inflammatory cytokines therefore inducing pyroptotic cell death. The inflammasome pathway is finely tuned by various mechanisms. Recent studies found that protein post-translational modifications such as ubiquitination also modulate inflammasome activation. Targeting the ubiquitination modification of the inflammasome pathway might be a promising strategy for related diseases. In this review, we extensively discuss the advances in inflammasome activation and pyroptosis modulated by ubiquitination which help in-depth understanding and controlling the inflammasome and pyroptosis in various diseases.
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Affiliation(s)
- Qiuyun Jiang
- Guangdong Institute of Cardiovascular Diseases, Guangdong Key Laboratory of Vascular Diseases, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, PR China; Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Diseases, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Zhigang Zhu
- Division of Hematology & Oncology, Department of Geriatrics, Guangzhou First People's Hospital, College of Medicine, South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Xinliang Mao
- Guangdong Institute of Cardiovascular Diseases, Guangdong Key Laboratory of Vascular Diseases, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, PR China; Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Diseases, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China.
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