1
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Geng Z, Zuo L, Li J, Yin L, Yang J, Duan T, Wang L, Zhang X, Song X, Wang Y, Hu J. Ginkgetin improved experimental colitis by inhibiting intestinal epithelial cell apoptosis through EGFR/PI3K/AKT signaling. FASEB J 2024; 38:e23817. [PMID: 39003633 DOI: 10.1096/fj.202400211rr] [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: 01/26/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/15/2024]
Abstract
Excessive apoptosis of intestinal epithelial cells leads to intestinal barrier dysfunction, which is not only one of the pathological features of inflammatory bowel disease (IBD) but also a therapeutic target. A natural plant extract, Ginkgetin (GK), has been reported to have anti-apoptotic activity, but its role in IBD is unknown. This study aimed to explore whether GK has anti-colitis effects and related mechanisms. An experimental colitis model induced by dextran sulfate sodium (DSS) was established, and GK was found to relieve colitis in DSS-induced mice as evidenced by improvements in weight loss, colon shortening, Disease Activity Index (DAI), macroscopic and tissue scores, and proinflammatory mediators. In addition, in DSS mice and TNF-α-induced colonic organoids, GK protected the intestinal barrier and inhibited intestinal epithelial cell apoptosis, by improving permeability and inhibiting the number of apoptotic cells and the expression of key apoptotic regulators (cleaved caspase 3, Bax and Bcl-2). The underlying mechanism of GK's protective effect was explored by bioinformatics, rescue experiments and molecular docking, and it was found that GK might directly target and activate EGFR, thereby interfering with PI3K/AKT signaling to inhibit apoptosis of intestinal epithelial cells in vivo and in vitro. In conclusion, GK inhibited intestinal epithelial apoptosis in mice with experimental colitis, at least in part, by activating EGFR and interfering with PI3K/AKT activation, explaining the underlying mechanism for ameliorating colitis, which may provide new options for the treatment of IBD.
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Affiliation(s)
- Zhijun Geng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
| | - Lugen Zuo
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Jing Li
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Lixia Yin
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
- School of Clinical Medicine, Bengbu Medical University, Bengbu, Anhui, China
| | - Jingjing Yang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
- School of Clinical Medicine, Bengbu Medical University, Bengbu, Anhui, China
| | - Ting Duan
- School of Clinical Medicine, Bengbu Medical University, Bengbu, Anhui, China
| | - Lian Wang
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Xiaofeng Zhang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
| | - Xue Song
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
| | - Yueyue Wang
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
| | - Jianguo Hu
- Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Bengbu, Anhui, China
- Department of Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui, China
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2
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Chen W, Li Y, Wang W, Gao S, Hu J, Xiang B, Wu D, Jiao N, Xu T, Zhi M, Zhu L, Zhu R. Enhanced microbiota profiling in patients with quiescent Crohn's disease through comparison with paired healthy first-degree relatives. Cell Rep Med 2024; 5:101624. [PMID: 38942021 DOI: 10.1016/j.xcrm.2024.101624] [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: 11/04/2023] [Revised: 04/09/2024] [Accepted: 06/07/2024] [Indexed: 06/30/2024]
Abstract
Prior studies indicate no correlation between the gut microbes of healthy first-degree relatives (HFDRs) of patients with Crohn's disease (CD) and the development of CD. Here, we utilize HFDRs as controls to examine the microbiota and metabolome in individuals with active (CD-A) and quiescent (CD-R) CD, thereby minimizing the influence of genetic and environmental factors. When compared to non-relative controls, the use of HFDR controls identifies fewer differential taxa. Faecalibacterium, Dorea, and Fusicatenibacter are decreased in CD-R, independent of inflammation, and correlated with fecal short-chain fatty acids (SCFAs). Validation with a large multi-center cohort confirms decreased Faecalibacterium and other SCFA-producing genera in CD-R. Classification models based on these genera distinguish CD from healthy individuals and demonstrate superior diagnostic power than models constructed with markers identified using unrelated controls. Furthermore, these markers exhibited limited discriminatory capabilities for other diseases. Finally, our results are validated across multiple cohorts, underscoring their robustness and potential for diagnostic and therapeutic applications.
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Affiliation(s)
- Wanning Chen
- Department of Gastroenterology, the Shanghai Tenth People's Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200072, P.R. China
| | - Yichen Li
- Medical College, Jiaying University, Meizhou 514031, P. R. China; Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, P.R. China; Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China
| | - Wenxia Wang
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China
| | - Sheng Gao
- Department of Gastroenterology, the Shanghai Tenth People's Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200072, P.R. China
| | - Jun Hu
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China; Department of Gastroenterology, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China
| | - Bingjie Xiang
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China; Department of Gastroenterology, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China
| | - Dingfeng Wu
- Department of Nephrology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310058, Zhejiang, P.R. China
| | - Na Jiao
- Department of Nephrology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310058, Zhejiang, P.R. China
| | - Tao Xu
- Medical College, Jiaying University, Meizhou 514031, P. R. China; Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, P.R. China
| | - Min Zhi
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China; Department of Gastroenterology, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China.
| | - Lixin Zhu
- Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, P.R. China; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangdong Institute of Gastroenterology; Biomedical Innovation Center; The Sixth Affiliated Hospital, Sun Yat-sen University; Key Laboratory of Human Microbiome and Chronic Diseases (Sun Yat-sen University), Ministry of Education, Guangzhou 510655, P.R. China.
| | - Ruixin Zhu
- Department of Gastroenterology, the Shanghai Tenth People's Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200072, P.R. China.
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3
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Yasuda T, Takagi T, Asaeda K, Hashimoto H, Kajiwara M, Azuma Y, Kitae H, Hirai Y, Mizushima K, Doi T, Inoue K, Dohi O, Yoshida N, Uchiyama K, Ishikawa T, Konishi H, Ukawa Y, Kohara A, Kudoh M, Inoue R, Naito Y, Itoh Y. Urolithin A-mediated augmentation of intestinal barrier function through elevated secretory mucin synthesis. Sci Rep 2024; 14:15706. [PMID: 38977770 PMCID: PMC11231190 DOI: 10.1038/s41598-024-65791-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: 03/28/2024] [Accepted: 06/24/2024] [Indexed: 07/10/2024] Open
Abstract
Maintaining the mucus layer is crucial for the innate immune system. Urolithin A (Uro A) is a gut microbiota-derived metabolite; however, its effect on mucin production as a physical barrier remains unclear. This study aimed to elucidate the protective effects of Uro A on mucin production in the colon. In vivo experiments employing wild-type mice, NF-E2-related factor 2 (Nrf2)-deficient mice, and wild-type mice treated with an aryl hydrocarbon receptor (AhR) antagonist were conducted to investigate the physiological role of Uro A. Additionally, in vitro assays using mucin-producing cells (LS174T) were conducted to assess mucus production following Uro A treatment. We found that Uro A thickened murine colonic mucus via enhanced mucin 2 expression facilitated by Nrf2 and AhR signaling without altering tight junctions. Uro A reduced mucosal permeability in fluorescein isothiocyanate-dextran experiments and alleviated dextran sulfate sodium-induced colitis. Uro A treatment increased short-chain fatty acid-producing bacteria and propionic acid concentration. LS174T cell studies confirmed that Uro A promotes mucus production through the AhR and Nrf2 pathways. In conclusion, the enhanced intestinal mucus secretion induced by Uro A is mediated through the actions of Nrf-2 and AhR, which help maintain intestinal barrier function.
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Affiliation(s)
- Takeshi Yasuda
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Tomohisa Takagi
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan.
- Department for Medical Innovation and Translational Medical Science, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan.
| | - Kohei Asaeda
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Hikaru Hashimoto
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Mariko Kajiwara
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Yuka Azuma
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Hiroaki Kitae
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Yasuko Hirai
- Department of Human Immunology and Nutrition Science, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Katsura Mizushima
- Department of Human Immunology and Nutrition Science, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Toshifumi Doi
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Ken Inoue
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Osamu Dohi
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Naohisa Yoshida
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Kazuhiko Uchiyama
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Takeshi Ishikawa
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Hideyuki Konishi
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Yuichi Ukawa
- Daicel Corporation, Healthcare SBU, Tokyo, 108-8230, Japan
| | - Akiko Kohara
- Daicel Corporation, Healthcare SBU, Tokyo, 108-8230, Japan
| | - Masatake Kudoh
- Daicel Corporation, Healthcare SBU, Niigata, 944-8550, Japan
| | - Ryo Inoue
- Laboratory of Animal Science, Department of Applied Biological Sciences, Faculty of Agriculture, Setsunan University, Hirakata, 572-8508, Japan
| | - Yuji Naito
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
- Department of Human Immunology and Nutrition Science, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Yoshito Itoh
- Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
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4
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Yang P, Ma G, Lu T, Zhou J, Fan H, Zhang X, Fan S, Xiao X. The influence of the oral microbiota in full-term pregnant women on immune regulation during pregnancy. J Reprod Immunol 2024; 165:104298. [PMID: 39002425 DOI: 10.1016/j.jri.2024.104298] [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: 04/28/2024] [Revised: 06/21/2024] [Accepted: 07/04/2024] [Indexed: 07/15/2024]
Abstract
BACKGROUND This study aims to conduct a preliminary exploration of the correlation between the oral microbiota of full-term pregnant women and both local placental immunity and the systemic immune system of the mother. METHODS A total of 26 pregnant women participated in this study, with samples collected from oral swabs, placental tissue, and peripheral venous blood. High-throughput sequencing was used to examine the oral microbial community. Flow cytometry was employed to assess immune cells in placental tissue and peripheral venous blood. ELISA and Luminex liquid bead chip technology were utilized to detect cytokines in both placental tissue and peripheral venous blood. RESULTS In placental tissue, The oral microbial community is primarily negatively correlated with placental CD3+CD4+CD8+T cells and positively correlated with placental IL-5. In the peripheral blood, The oral microbial community is primarily positively correlated with maternal systemic immune parameters, including CD3+CD4+ T cells and the CD4+/CD8+ ratio, as well as positively correlated with peripheral IL-18. CONCLUSIONS The oral microbiota of full-term pregnant women participates in the regulatory function of the maternal immune system. Meanwhile, the oral microbial community may also be an important factor mediating local immune regulation in the placenta.
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Affiliation(s)
- Ping Yang
- Department of Obstetrics and Gynaecology, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong Province, China
| | - Guangyu Ma
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Tong Lu
- Department of Otolaryngology, Shenzhen Long Hua District Central Hospital, Shenzhen, China
| | - Juan Zhou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Haolong Fan
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin, China
| | - Xiaowei Zhang
- Department of Obstetrics and Gynaecology, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong Province, China
| | - Shangrong Fan
- Department of Obstetrics and Gynaecology, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Guangdong Province, China.
| | - Xiaomin Xiao
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Jinan University, Guangzhou, China.
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5
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Pérez M, Buey B, Corral P, Giraldos D, Latorre E. Microbiota-Derived Short-Chain Fatty Acids Boost Antitumoral Natural Killer Cell Activity. J Clin Med 2024; 13:3885. [PMID: 38999461 PMCID: PMC11242436 DOI: 10.3390/jcm13133885] [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: 05/14/2024] [Revised: 06/21/2024] [Accepted: 06/30/2024] [Indexed: 07/14/2024] Open
Abstract
Background: The intestinal microbiota can regulate numerous host functions, including the immune response. Through fermentation, the microbiota produces and releases microbial metabolites such as short-chain fatty acids (SCFAs), which can affect host homeostasis. There is growing evidence that the gut microbiome can have a major impact on cancer. Specific gut microbial composition and metabolites are associated with tumor status in the host. However, their effects on the antitumor response have scarcely been investigated. Natural killer (NK) cells play an important role in antitumor immunity due to their ability to directly identify and eliminate tumor cells. Methods: The aim of this study was to investigate the effects of SCFAs on antitumoral NK cell activity, using NK-92 cell line. Results: Here, we describe how SCFAs can boost antitumoral NK cell activity. The SCFAs induced the release of NK extracellular vesicles and reduced the secretion of the anti-inflammatory cytokine IL-10. The SCFAs also increased the cytotoxicity of the NK cells against multiple myeloma cells. Conclusions: Our results indicate, for the first time, the enormous potential of SCFAs in regulating antitumoral NK cell defense, where modulation of the SCFAs' production could play a fundamental role in cancer immunotherapy.
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Affiliation(s)
- Marina Pérez
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Berta Buey
- Departamento de Farmacología, Fisiología y Medicina Legal y Forense, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain
| | - Pilar Corral
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - David Giraldos
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Eva Latorre
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón), 50009 Zaragoza, Spain
- Instituto Agroalimentario de Aragón (IA2), 50013 Zaragoza, Spain
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6
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Pourbagheri-Sigaroodi A, Momeny M, Rezaei N, Fallah F, Bashash D. Immune landscape of hepatocellular carcinoma: From dysregulation of the immune responses to the potential immunotherapies. Cell Biochem Funct 2024; 42:e4098. [PMID: 39034646 DOI: 10.1002/cbf.4098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 07/03/2024] [Accepted: 07/10/2024] [Indexed: 07/23/2024]
Abstract
Hepatocellular carcinoma (HCC) presents a considerable global health burden due to its late diagnosis and high morbidity. The liver's specific anatomical and physiological features expose it to various antigens, requiring precise immune regulation. To the best of our knowledge, this is the first time that a comprehensive overview of the interactions between the immune system and gut microbiota in the development of HCC, as well as the relevant therapeutic approaches are discussed. Dysregulation of immune compartments within the liver microenvironment drives HCC pathogenesis, characterized by elevated regulatory cells such as regulatory T cells (Tregs), myeloid-derived suppressor cells, and M2 macrophages as well as suppressive molecules, alongside reduced number of effector cells like T cells, natural killer cells, and M1 macrophages. Dysbiosis of gut microbiota also contributes to HCC by disrupting intestinal barrier integrity and triggering overactivated immune responses. Immunotherapy approaches, particularly immune checkpoint inhibitors, have exhibited promise in HCC management, yet adoptive cell therapy and cancer vaccination research are in the early steps with relatively less favorable outcomes. Further understanding of immune dysregulation, gut microbiota involvement, and therapeutic combination strategies are essential for advancing precision immunotherapy in HCC.
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Affiliation(s)
- Atieh Pourbagheri-Sigaroodi
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Momeny
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Fallah
- Pediatric Infections Research Center, Research Institute for Children's Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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7
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Reynders A, Anissa Jhumka Z, Gaillard S, Mantilleri A, Malapert P, Magalon K, Etzerodt A, Salio C, Ugolini S, Castets F, Saurin AJ, Serino M, Hoeffel G, Moqrich A. Gut microbiota promotes pain chronicity in Myosin1A deficient male mice. Brain Behav Immun 2024; 119:750-766. [PMID: 38710336 DOI: 10.1016/j.bbi.2024.05.010] [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: 08/11/2023] [Revised: 04/23/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024] Open
Abstract
Chronic pain is a heavily debilitating condition and a huge socio-economic burden, with no efficient treatment. Over the past decade, the gut microbiota has emerged as an important regulator of nervous system's health and disease states. Yet, its contribution to the pathogenesis of chronic somatic pain remains poorly documented. Here, we report that male but not female mice lacking Myosin1a (KO) raised under single genotype housing conditions (KO-SGH) are predisposed to develop chronic pain in response to a peripheral tissue injury. We further underscore the potential of MYO1A loss-of-function to alter the composition of the gut microbiota and uncover a functional connection between the vulnerability to chronic pain and the dysbiotic gut microbiota of KO-SGH males. As such, parental antibiotic treatment modifies gut microbiota composition and completely rescues the injury-induced pain chronicity in male KO-SGH offspring. Furthermore, in KO-SGH males, this dysbiosis is accompanied by a transcriptomic activation signature in the dorsal root ganglia (DRG) macrophage compartment, in response to tissue injury. We identify CD206+CD163- and CD206+CD163+ as the main subsets of DRG resident macrophages and show that both are long-lived and self-maintained and exhibit the capacity to monitor the vasculature. Consistently, in vivo depletion of DRG macrophages rescues KO-SGH males from injury-induced chronic pain underscoring a deleterious role for DRG macrophages in a Myo1a-loss-of function context. Together, our findings reveal gene-sex-microbiota interactions in determining the predisposition to injury-induced chronic pain and point-out DRG macrophages as potential effector cells.
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Affiliation(s)
- Ana Reynders
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France.
| | - Z Anissa Jhumka
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | | | - Annabelle Mantilleri
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Pascale Malapert
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Karine Magalon
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Anders Etzerodt
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Chiara Salio
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Sophie Ugolini
- Aix-Marseille-Université, CNRS, INSER, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Francis Castets
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Andrew J Saurin
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Matteo Serino
- Institut de Recherche en Santé Digestive, Université de Toulouse-Paul Sabatier, INSERM, INRAe, ENVT, UPS, Toulouse, France
| | - Guillaume Hoeffel
- Aix-Marseille-Université, CNRS, INSER, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Aziz Moqrich
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France.
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8
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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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9
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Ying Q, Rong J, Hong M, Heng Z, Zhang Z, Xu Y. The emerging role of adaptor proteins in regulating innate immunity of sepsis. Pharmacol Res 2024; 205:107223. [PMID: 38797359 DOI: 10.1016/j.phrs.2024.107223] [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: 12/06/2023] [Revised: 05/18/2024] [Accepted: 05/19/2024] [Indexed: 05/29/2024]
Abstract
Sepsis is a life-threatening syndrome caused by a dysregulated immune response. A large number of adaptor proteins have been found to play a pivotal role in sepsis via protein-protein interactions, thus participating in inflammatory cascades, leading to the generation of numerous inflammatory cytokines, as well as oxidative stress and regulated cell death. Although available strategies for the diagnosis and management of sepsis have improved, effective and specific treatments are lacking. This review focuses on the emerging role of adaptor proteins in regulating the innate immunity of sepsis and evaluates the potential value of adaptor protein-associated therapeutic strategy for sepsis.
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Affiliation(s)
- Qiaoyu Ying
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jiabing Rong
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Min Hong
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Zetao Heng
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Zhaocai Zhang
- Department of Intensive Care Unit, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Yinchuan Xu
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
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10
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Cui Z, Du F, Yu W, Wang Z, Kong F, Xie Z, Zhao Q, Zhang H, Wang H, Fan H, Ren L. Alterations of mouse gut microbiome in alveolar echinococcosis. Heliyon 2024; 10:e32860. [PMID: 38988523 PMCID: PMC11234002 DOI: 10.1016/j.heliyon.2024.e32860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 06/06/2024] [Accepted: 06/11/2024] [Indexed: 07/12/2024] Open
Abstract
Alveolar echinococcosis (AE) may affect the composition of the host's gut microbiota, potentially disrupting the balance between the gut microbiota and metabolites. Metagenomics and untargeted metabolomics were employed to characterize changes in the gut microbiota and metabolites in mouse models infected with E. multilocularis. Pearson correlation coefficients were calculated to compare the distribution of microbiota and metabolites, revealing synergistic or mutually exclusive relationships. Functional outputs of the gut microbiota were explored using the CAZy database and six enzymes involved in carbohydrate metabolism were identified with statistically significant differential expression between infected and control groups. The resistome was characterized by identifying antibiotic resistance genes annotated in the Comprehensive Antibiotic Resistance Database from the metagenomes of the groups. Firmicutes are the main carrier of ARGs in the host gut with tetQ being most prevalent. Antibiotic efflux, inactivation and target modification were the principal mechanisms of resistance. Comparison and analysis of two sets of antibiotic metabolic pathways allowed the identification of enzyme reactions unique to infected mice. KEGG pathway overview shows phenazine biosynthesis involving phzG to be one of them. In conclusion, infection with AE in mice leads to an overall disruption of gut microbiota and metabolites with the involvement of enzymes related to carbohydrate metabolism. Furthermore, antibiotic-resistance genes may play a role in disease progression, offering potential insights into the relationship between antibiotic use in AE and treatment outcomes.
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Affiliation(s)
- Ziyan Cui
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Department of Postgraduate, Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Fei Du
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Department of Postgraduate, Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Wenhao Yu
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Zhixin Wang
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Fanyu Kong
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Zhi Xie
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Qian Zhao
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Hanxi Zhang
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Haijiu Wang
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Haining Fan
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
| | - Li Ren
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai, 810001, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai, 810001, China
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11
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Del Chierico F, Masi L, Petito V, Baldelli V, Puca P, Benvenuto R, Fidaleo M, Palucci I, Lopetuso LR, Caristo ME, Carrozza C, Giustiniani MC, Nakamichi N, Kato Y, Putignani L, Gasbarrini A, Pani G, Scaldaferri F. Solute Transporter OCTN1/Slc22a4 Affects Disease Severity and Response to Infliximab in Experimental Colitis: Role of Gut Microbiota and Immune Modulation. Inflamm Bowel Dis 2024:izae135. [PMID: 38944815 DOI: 10.1093/ibd/izae135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Indexed: 07/01/2024]
Abstract
BACKGROUND Inflammatory bowel diseases are chronic disabling conditions with a complex and multifactorial etiology, still incompletely understood. OCTN1, an organic cation transporter, could have a role in modulating the inflammatory response, and some genetic polymorphisms of this molecule have been associated with increased risk of inflammatory bowel diseases. Until now, limited information exists on its potential in predicting/modulating patient's response to therapies. The aim of this study was to evaluate the role of OCTN1 in modifying gut microbiota and mucosal immunity in response to infliximab therapy in murine colitis. METHODS A dextran sodium sulphate model of colitis was used to assess the clinical efficacy of infliximab administered intravenously in ocnt1 gene knockout mice and their C57BL/6 controls. Stool, colon, and mesenteric lymph node samples were collected to evaluate differences in gut microbiota composition, histology, and T cell populations, respectively. RESULTS Octn1 -/- influences the microbiota profile and is associated with a worse dysbiosis in mice with colitis. Infliximab treatment attenuates colitis-associated dysbiosis, with an increase of bacterial richness and evenness in both strains. In comparison with wild type, octn1-/- mice have milder disease and a higher baseline percentage of Treg, Tmemory, Th2 and Th17 cells. CONCLUSIONS Our data support the murine model to study OCTN1 genetic contribution to inflammatory bowel diseases. This could be the first step towards the recognition of this membrane transporter as a biomarker in inflammatory conditions and a predictor of response to therapies.
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Affiliation(s)
- Federica Del Chierico
- Immunology, Rheumatology and Infectious Diseases Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Letizia Masi
- Department of Medical and Surgical Science, Digestive Disease Center (CeMAD) Translational Research Laboratories, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Valentina Petito
- Department of Medical and Surgical Science, Digestive Disease Center (CeMAD) Translational Research Laboratories, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Valerio Baldelli
- Immunology, Rheumatology and Infectious Diseases Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Pierluigi Puca
- Department of Medical and Surgical Sciences, UOS Inflammatory Bowel Diseases, Center for Diseases of Digestive System (CeMAD), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
| | - Roberta Benvenuto
- Department of Pathology, Fondazione Policlinico Universitario A.Gemelli IRCCS, Rome, Italy
| | - Marco Fidaleo
- Department of Biology and Biotechnologies Charles Darwin, Università La Sapienza, Rome, Italy
| | - Ivana Palucci
- Department of Basic Biotechnological Sciences, Intensive and Perioperative Clinics, Fondazione Policlinico Universitario A.Gemelli IRCCS, Rome, Italy
- Institute of Microbiology, Catholic University of the Sacred Heart, Rome, Italy
| | - Loris Riccardo Lopetuso
- Department of Medical and Surgical Sciences, UOS Inflammatory Bowel Diseases, Center for Diseases of Digestive System (CeMAD), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Medicine and Ageing Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
- Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | | | - Cinzia Carrozza
- Department of Clinical Biochemistry, Laboratory and Infectious Science, Fondazione Policlinico Universitario A.Gemelli IRCCS, Rome, Italy
| | | | - Noritaka Nakamichi
- Faculty of Pharmacy, Takasaki University of Health and Welfare, 60 Nakaorui-machi, 370-0033, Takasaki, Gunma, Japan
| | - Yukio Kato
- Faculty of Pharmacy, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Lorenza Putignani
- Unit of Microbiology and Diagnostic Immunology, Unit of Microbiomics and Immunology, Rheumatology and Infectious Diseases Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Antonio Gasbarrini
- Department of Medical and Surgical Science, Digestive Disease Center (CeMAD) Translational Research Laboratories, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
- Department of Medical and Surgical Science, Digestive Disease Center (CeMAD), Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Giovambattista Pani
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
| | - Franco Scaldaferri
- Department of Medical and Surgical Sciences, UOS Inflammatory Bowel Diseases, Center for Diseases of Digestive System (CeMAD), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
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12
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Valiño-Rivas L, Pintor-Chocano A, Carriazo SM, Sanz AB, Ortiz A, Sanchez-Niño MD. Loss of NLRP6 increases the severity of kidney fibrosis. J Cell Physiol 2024. [PMID: 38934623 DOI: 10.1002/jcp.31347] [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: 04/12/2024] [Revised: 05/27/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024]
Abstract
While NLRP3 contributes to kidney fibrosis, the function of most NOD-like receptors (NLRs) in chronic kidney disease (CKD) remains unexplored. To identify further NLR members involved in the pathogenesis of CKD, we searched for NLR genes expressed by normal kidneys and differentially expressed in human CKD transcriptomics databases. For NLRP6, lower kidney expression correlated with decreasing glomerular filtration rate. The role and molecular mechanisms of Nlrp6 in kidney fibrosis were explored in wild-type and Nlrp6-deficient mice and cell cultures. Data mining of single-cell transcriptomics databases identified proximal tubular cells as the main site of Nlrp6 expression in normal human kidneys and tubular cell Nlrp6 was lost in CKD. We confirmed kidney Nlrp6 downregulation following murine unilateral ureteral obstruction. Nlrp6-deficient mice had higher kidney p38 MAPK activation and more severe kidney inflammation and fibrosis. Similar results were obtained in adenine-induced kidney fibrosis. Mechanistically, profibrotic cytokines transforming growth factor beta 1 (TGF-β1) and TWEAK decreased Nlrp6 expression in cultured tubular cells, and Nlrp6 downregulation resulted in increased TGF-β1 and CTGF expression through p38 MAPK activation, as well as in downregulation of the antifibrotic factor Klotho, suggesting that loss of Nlrp6 promotes maladaptive tubular cell responses. The pattern of gene expression following Nlrp6 targeting in cultured proximal tubular cells was consistent with maladaptive transitions for proximal tubular cells described in single-cell transcriptomics datasets. In conclusion, endogenous constitutive Nlrp6 dampens sterile kidney inflammation and fibrosis. Loss of Nlrp6 expression by tubular cells may contribute to CKD progression.
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Grants
- Sociedad Española de Nefrología, Comunidad de Madrid en Biomedicina P2022/BMD-7223, CIFRA_COR-CM and COST Action PERMEDIK CA21165, supported by COST (European Cooperation in Science and Technology). MDSN and ABS were supported by MICINN Ramon y Cajal program RYC2018-024461-I and RYC2019-026916-I respectively. IIS- Fundacion Jimenez Diaz Biobank, part of the Spanish Biobanks Platform (PT17/0015/0006)
- MICINN
- This work was supported by Instituto de Salud Carlos III (ISCIII)-FIS/Fondo Europeo de Desarrollo Regional FEDER grants (PI18/01366, PI21/00251, PI22/00050, PI22/00469), Ministerio de Ciencia e Innovación y Agencia Estatal de Investigación/Next Generation EU (CNS2022-135937), ERA- PerMed-JTC2022 (SPAREKID AC22/00027), RICORS program to RICORS2040 (RD21/0005/0001) funded by European Union - NextGenerationEU, Mecanismo para la Recuperación y la Resiliencia (MRR) and SPACKDc PMP21/00109 FEDER
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Affiliation(s)
- Lara Valiño-Rivas
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
| | - Aranzazu Pintor-Chocano
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
| | - Sol M Carriazo
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
| | - Ana B Sanz
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
| | - Alberto Ortiz
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad Autonoma de Madrid, Madrid, Spain
| | - Maria D Sanchez-Niño
- Division of Nephrology, Nephrology and Hypertension Laboratory, FIIS-Fundacion Jimenez Diaz, Madrid, Spain
- Division of Nephrology, RICORS2040, Madrid, Spain
- Departamento de Farmacologia, Facultad de Medicina, Universidad Autonoma de Madrid, Madrid, Spain
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13
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Taru V, Szabo G, Mehal W, Reiberger T. Inflammasomes in chronic liver disease: hepatic injury, fibrosis progression and systemic inflammation. J Hepatol 2024:S0168-8278(24)02322-5. [PMID: 38908436 DOI: 10.1016/j.jhep.2024.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/23/2024] [Accepted: 06/17/2024] [Indexed: 06/24/2024]
Abstract
Chronic liver disease (CLD) leads to hepatocellular injury that triggers a pro-inflammatory state in several parenchymal and non-parenchymal hepatic cell types ultimately resulting in liver fibrosis, cirrhosis, portal hypertension (PH) and liver failure. Thus, an improved understanding of the inflammasomes - as key molecular drivers of liver injury - supports the development of novel diagnostic or prognostic biomarkers and effective therapeutics. In liver disease, innate immune cells respond to hepatic noxes by activating cell-intrinsic inflammasomes via toll-like receptors (TLRs) and nuclear factor kappa-B (NF-κB) and release of pro-inflammatory cytokines (such as IL-1β, IL-18, TNF-α and IL-6). Subsequently, cells of the adaptive immune system are recruited to fuel hepatic inflammation, and liver parenchymal cells may undergo programmed cell-death mediated by gasdermin D, termed pyroptosis. With liver disease progression, there is a shift towards a type 2 inflammatory response, which promotes tissue repair but also fibrogenesis. Inflammasome activation may also occur at extrahepatic sites, such as the white adipose tissue in metabolic dysfunction-associated steatohepatitis (MASH). In end-stage liver disease, flares of inflammation (e.g., in severe alcohol-related hepatitis) that spark on a dysfunctional immune system, contribute to inflammasome-mediated liver injury and potentially result in organ dysfunctions/failures, as seen in acute-on-chronic liver failure (ACLF). This review provides an overview on current concepts regarding inflammasome activation in liver disease progression and related biomarkers and therapeutic approaches that are being developed for patients with liver disease.
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Affiliation(s)
- Vlad Taru
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria; Christian-Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria; Hepatology Department, 3rd Medical Clinic, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Gyongyi Szabo
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Wajahat Mehal
- Section of Digestive Diseases, Yale School of Medicine, New Haven, CT, USA; West Haven Veterans Medical Center, West Haven, CT, USA.
| | - Thomas Reiberger
- Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria; Christian-Doppler Laboratory for Portal Hypertension and Liver Fibrosis, Medical University of Vienna, Vienna, Austria; Center for Molecular Medicine (CeMM) of the Austrian Academy of Science, Vienna, Austria
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14
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Hong D, Kim HK, Yang W, Yoon C, Kim M, Yang CS, Yoon S. Integrative analysis of single-cell RNA-seq and gut microbiome metabarcoding data elucidates macrophage dysfunction in mice with DSS-induced ulcerative colitis. Commun Biol 2024; 7:731. [PMID: 38879692 PMCID: PMC11180211 DOI: 10.1038/s42003-024-06409-w] [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: 12/08/2023] [Accepted: 06/03/2024] [Indexed: 06/19/2024] Open
Abstract
Ulcerative colitis (UC) is a significant inflammatory bowel disease caused by an abnormal immune response to gut microbes. However, there are still gaps in our understanding of how immune and metabolic changes specifically contribute to this disease. Our research aims to address this gap by examining mouse colons after inducing ulcerative colitis-like symptoms. Employing single-cell RNA-seq and 16 s rRNA amplicon sequencing to analyze distinct cell clusters and microbiomes in the mouse colon at different time points after induction with dextran sodium sulfate. We observe a significant reduction in epithelial populations during acute colitis, indicating tissue damage, with a partial recovery observed in chronic inflammation. Analyses of cell-cell interactions demonstrate shifts in networking patterns among different cell types during disease progression. Notably, macrophage phenotypes exhibit diversity, with a pronounced polarization towards the pro-inflammatory M1 phenotype in chronic conditions, suggesting the role of macrophage heterogeneity in disease severity. Increased expression of Nampt and NOX2 complex subunits in chronic UC macrophages contributes to the inflammatory processes. The chronic UC microbiome exhibits reduced taxonomic diversity compared to healthy conditions and acute UC. The study also highlights the role of T cell differentiation in the context of dysbiosis and its implications in colitis progression, emphasizing the need for targeted interventions to modulate the inflammatory response and immune balance in colitis.
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Affiliation(s)
- Dawon Hong
- RNA Cell Biology Laboratory, Graduate Department of Bioconvergence Engineering, Dankook University, Yongin, Republic of Korea
| | - Hyo Keun Kim
- Dept of Molecular and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, Korea
| | - Wonhee Yang
- Department of AI-based Convergence, Dankook University, Yongin, Republic of Korea
| | - Chanjin Yoon
- Dept of Molecular and Life Science and Institute of Natural Science and Technology, Hanyang University, Ansan-si, Korea
| | - Minsoo Kim
- Department of Computer Science, College of SW Convergence, Dankook University, Yongin, Republic of Korea
| | - Chul-Su Yang
- Dept of Medicinal and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, Korea.
| | - Seokhyun Yoon
- Department of Electronics & Electrical Engineering, College of Engineering, Dankook University, Yongin, Republic of Korea.
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15
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Műzes G, Sipos F. Inflammasomes Are Influenced by Epigenetic and Autophagy Mechanisms in Colorectal Cancer Signaling. Int J Mol Sci 2024; 25:6167. [PMID: 38892354 PMCID: PMC11173330 DOI: 10.3390/ijms25116167] [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: 04/28/2024] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
Inflammasomes contribute to colorectal cancer signaling by primarily inducing inflammation in the surrounding tumor microenvironment. Its role in inflammation is receiving increasing attention, as inflammation has a protumor effect in addition to inducing tissue damage. The inflammasome's function is complex and controlled by several layers of regulation. Epigenetic processes impact the functioning or manifestation of genes that are involved in the control of inflammasomes or the subsequent signaling cascades. Researchers have intensively studied the significance of epigenetic mechanisms in regulation, as they encompass several potential therapeutic targets. The regulatory interactions between the inflammasome and autophagy are intricate, exhibiting both advantageous and harmful consequences. The regulatory aspects between the two entities also encompass several therapeutic targets. The relationship between the activation of the inflammasome, autophagy, and epigenetic alterations in CRC is complex and involves several interrelated pathways. This article provides a brief summary of the newest studies on how epigenetics and autophagy control the inflammasome, with a special focus on their role in colorectal cancer. Based on the latest findings, we also provide an overview of the latest therapeutic ideas for this complex network.
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Affiliation(s)
- Györgyi Műzes
- Immunology Division, Department of Internal Medicine and Hematology, Semmelweis University, 1088 Budapest, Hungary
| | - Ferenc Sipos
- Immunology Division, Department of Internal Medicine and Hematology, Semmelweis University, 1088 Budapest, Hungary
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16
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Yao Y, Shang W, Bao L, Peng Z, Wu C. Epithelial-immune cell crosstalk for intestinal barrier homeostasis. Eur J Immunol 2024; 54:e2350631. [PMID: 38556632 DOI: 10.1002/eji.202350631] [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: 12/19/2023] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/02/2024]
Abstract
The intestinal barrier is mainly formed by a monolayer of epithelial cells, which forms a physical barrier to protect the gut tissues from external insults and provides a microenvironment for commensal bacteria to colonize while ensuring immune tolerance. Moreover, various immune cells are known to significantly contribute to intestinal barrier function by either directly interacting with epithelial cells or by producing immune mediators. Fulfilling this function of the gut barrier for mucosal homeostasis requires not only the intrinsic regulation of intestinal epithelial cells (IECs) but also constant communication with immune cells and gut microbes. The reciprocal interactions between IECs and immune cells modulate mucosal barrier integrity. Dysregulation of barrier function could lead to dysbiosis, inflammation, and tumorigenesis. In this overview, we provide an update on the characteristics and functions of IECs, and how they integrate their functions with tissue immune cells and gut microbiota to establish gut homeostasis.
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Affiliation(s)
- Yikun Yao
- Shanghai Institute of Nutrition & Health, Chinese Academy of Science, Shanghai, China
| | - Wanjing Shang
- Lymphocyte Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lingyu Bao
- Section on Molecular Morphogenesis, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Zhaoyi Peng
- Section on Molecular Morphogenesis, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Chuan Wu
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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17
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Rook GAW. Evolution and the critical role of the microbiota in the reduced mental and physical health associated with low socioeconomic status (SES). Neurosci Biobehav Rev 2024; 161:105653. [PMID: 38582194 DOI: 10.1016/j.neubiorev.2024.105653] [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: 11/28/2023] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
The evolution of the gut-microbiota-brain axis in animals reveals that microbial inputs influence metabolism, the regulation of inflammation and the development of organs, including the brain. Inflammatory, neurodegenerative and psychiatric disorders are more prevalent in people of low socioeconomic status (SES). Many aspects of low SES reduce exposure to the microbial inputs on which we are in a state of evolved dependence, whereas the lifestyle of wealthy citizens maintains these exposures. This partially explains the health deficit of low SES, so focussing on our evolutionary history and on environmental and lifestyle factors that distort microbial exposures might help to mitigate that deficit. But the human microbiota is complex and we have poor understanding of its functions at the microbial and mechanistic levels, and in the brain. Perhaps its composition is more flexible than the microbiota of animals that have restricted habitats and less diverse diets? These uncertainties are discussed in relation to the encouraging but frustrating results of attempts to treat psychiatric disorders by modulating the microbiota.
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Affiliation(s)
- Graham A W Rook
- Centre for Clinical Microbiology, Department of infection, UCL (University College London), London, UK.
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18
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Zhou ZJ, Dong JY, Qiu Y, Zhang GL, Wei K, He LH, Sun YN, Jiang HZ, Zhang SS, Guo XR, Wang JY, Chen DP. Sulforaphane decreases oxidative stress and inhibits NLRP3 inflammasome activation in a mouse model of ulcerative colitis. Biomed Pharmacother 2024; 175:116706. [PMID: 38713944 DOI: 10.1016/j.biopha.2024.116706] [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: 01/26/2024] [Revised: 04/27/2024] [Accepted: 05/02/2024] [Indexed: 05/09/2024] Open
Abstract
Excessive oxidative stress and NLRP3 inflammasome activation are considered the main drivers of inflammatory bowel disease (IBD), and inhibition of inflammasomes ameliorates clinical symptoms and morphological manifestations of IBD. Herein, we examined the roles of NLRP3 activation in IBD and modulation of NLRP3 by sulforaphane (SFN), a compound with multiple pharmacological activities that is extracted from cruciferous plants. To simulate human IBD, we established a mouse colitis model by administering dextran sodium sulfate in the drinking water. SFN (25, 50 mg·kg-1·d-1, ig) or the positive control sulfasalazine (500 mg/kg, ig) was administered to colitis-affected mice for 7 days. Model mice displayed pathological alterations in colon tissue as well as classic symptoms of colitis beyond substantial tissue inflammation. Expression of NLRP3, ASC, and caspase-1 was significantly elevated in the colonic epithelium. The expression of NLRP3 inflammasomes led to activation of downstream proteins and increases in the cytokines IL-18 and IL-1β. SFN administration either fully or partially reversed these changes, thus restoring IL-18 and IL-1β, substantially inhibiting NLRP3 activation, and decreasing inflammation. SFN alleviated the inflammation induced by LPS and NLRP3 agonists in RAW264.7 cells by decreasing the levels of reactive oxygen species. In summary, our results revealed the pathological roles of oxidative stress and NLRP3 in colitis, and indicated that SFN might serve as a natural NLRP3 inhibitor, thereby providing a new strategy for alternative colitis treatment.
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Affiliation(s)
- Zi-Juan Zhou
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Jian-Yi Dong
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Yang Qiu
- Dalian Medical University, Dalian, Liaoning 116044, China
| | - Guo-Lin Zhang
- Dalian Medical University, Dalian, Liaoning 116044, China
| | - Kun Wei
- Dalian Medical University, Dalian, Liaoning 116044, China
| | - Li-Heng He
- Dalian Medical University, Dalian, Liaoning 116044, China
| | - Yi-Ning Sun
- Dalian Medical University, Dalian, Liaoning 116044, China
| | | | - Shuang-Shuang Zhang
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Xin-Rui Guo
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China
| | - Jing-Yu Wang
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China.
| | - Da-Peng Chen
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning 116044, China.
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19
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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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20
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Miki T, Haneda T, Okada N, Ito M. Possible link between colonization of the gastrointestinal tract by Citrobacter rodentium in C57BL/6 mice and microbiota composition. Microbiol Immunol 2024; 68:206-211. [PMID: 38644589 DOI: 10.1111/1348-0421.13128] [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: 02/01/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/23/2024]
Abstract
Colonization resistance, conferred by the host's microbiota through both direct and indirect protective actions, serves to protect the host from enteric infections. Here, we identified the specific members of the gut microbiota that impact gastrointestinal colonization by Citrobacter rodentium, a murine pathogen causing colonic crypt hyperplasia. The gut colonization levels of C. rodentium in C57BL/6 mice varied among breeding facilities, probably due to differences in microbiota composition. A comprehensive analysis of the microbiota revealed that specific members of the microbiota may influence gut colonization by C. rodentium, thus providing a potential link between the two.
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Affiliation(s)
- Tsuyoshi Miki
- Department of Microbiology, School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Takeshi Haneda
- Department of Microbiology, School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Nobuhiko Okada
- Department of Microbiology, School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Masahiro Ito
- Department of Microbiology, School of Pharmacy, Kitasato University, Tokyo, Japan
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21
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Li J, Zhang X, Luan F, Duan J, Zou J, Sun J, Shi Y, Guo D, Wang C, Wang X. Therapeutic Potential of Essential Oils Against Ulcerative Colitis: A Review. J Inflamm Res 2024; 17:3527-3549. [PMID: 38836243 PMCID: PMC11149639 DOI: 10.2147/jir.s461466] [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: 01/26/2024] [Accepted: 04/25/2024] [Indexed: 06/06/2024] Open
Abstract
Ulcerative colitis (UC) is a chronic non-sp ecific inflammatory disease of the colorectal mucosa. Researchers have associated UC onset with familial genetics, lifestyle behavior, inflammatory immune factors, intestinal microbiota, and the integrity of the intestinal mucosal barrier. The primary therapeutic interventions for UC consist of pharmacological management to control inflammation and promote mucosal healing and surgical interventions. The available drugs effectively control and decelerate the progression of UC in most patients; nonetheless, their long-term administration can exert adverse effects and influence the therapeutic effect. Plant essential oils (EOs) refer to a group of hydrophobic aromatic volatile substances. EOs have garnered considerable attention in both domestic and international research because of their anti-inflammatory, antibacterial, and antioxidant properties. They include peppermint, peppercorns, rosemary, and lavender, among others. Researchers have investigated the role of EOs in medicine and have elucidated their potential to mitigate the detrimental effects of UC through their anti-inflammatory, antioxidant, antidepressant, and anti-insomnia properties as well as their ability to regulate the intestinal flora. Furthermore, EOs exert minimal toxic adverse effects, further enhancing their appeal for therapeutic applications. However, these speculations are based on theoretical experiments, thereby warranting more clinical studies to confirm their effectiveness and safety. In this article, we aim to provide an overview of the advancements in utilizing natural medicine EOs for UC prevention and treatment. We will explore the potential pathogenesis of UC and examine the role of EOs therapy in basic research, quality stability, and management specification of inadequate EOs for UC treatment. We intend to offer novel insights into the use of EOs in UC prevention and management.
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Affiliation(s)
- Jinkai Li
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Xiaofei Zhang
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Fei Luan
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Jiawei Duan
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Junbo Zou
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Jing Sun
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Yajun Shi
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Dongyan Guo
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Changli Wang
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
| | - Xiao Wang
- Key Laboratory of Basic and New Drug Research in Chinese Medicine, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, People's Republic of China
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22
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Mbalaviele G, Ryffel B. Editorial: Inflammasomes in human diseases and metabolism. Front Immunol 2024; 15:1420303. [PMID: 38840909 PMCID: PMC11150840 DOI: 10.3389/fimmu.2024.1420303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 04/29/2024] [Indexed: 06/07/2024] Open
Affiliation(s)
- Gabriel Mbalaviele
- Division of Bone and Mineral Diseases, Department of Medicine, School of Medicine, Washington University, St. Louis, MO, United States
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23
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Nanlohy NM, Johannesson N, Wijnands L, Arroyo L, de Wit J, den Hartog G, Wolthers KC, Sridhar A, Fuentes S. Exploring host-commensal-pathogen dynamics in cell line and organotypic human intestinal epithelial models. iScience 2024; 27:109771. [PMID: 38711444 PMCID: PMC11070716 DOI: 10.1016/j.isci.2024.109771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/26/2024] [Accepted: 04/15/2024] [Indexed: 05/08/2024] Open
Abstract
Host and microbiome intricately interact in the ecosystem of the human digestive tract, playing a crucial role in our health. These interactions can initiate immune responses in the epithelial cells, which, in turn, activate downstream responses in other immune cells. Here, we used a CaCo-2 and a human intestinal enteroid (HIE) model to explore epithelial responses to both commensal and pathogenic bacteria, individually and combined. CaCo-2 cells were co-cultured with peripheral blood mononuclear cells, revealing downstream activation of immune cells. While both systems showed comparable cytokine profiles, they differed in their responses to the different bacteria, with the organoid system being more representative of responses observed in humans. We provide evidence of the pro-inflammatory responses associated with these bacteria. These models contribute to a deeper understanding of the interactions between the microbiota, intestinal epithelium, and immune cells in the gut, promoting advances in the field of host-microbe interactions.
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Affiliation(s)
- Nening M. Nanlohy
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Nina Johannesson
- OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location AMC, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam 1105 AZ, the Netherlands
- OrganoVIR Labs, Department of Pediatric Infectious Diseases, Emma Children’s Hospital, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam 1105 AZ, the Netherlands
| | - Lucas Wijnands
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Laura Arroyo
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Jelle de Wit
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Gerco den Hartog
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
- Laboratory of Medical Immunology, Radboudumc, Nijmegen, the Netherlands
| | - Katja C. Wolthers
- OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location AMC, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam 1105 AZ, the Netherlands
| | - Adithya Sridhar
- OrganoVIR Labs, Department of Medical Microbiology, Amsterdam UMC, Location AMC, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam 1105 AZ, the Netherlands
- OrganoVIR Labs, Department of Pediatric Infectious Diseases, Emma Children’s Hospital, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam 1105 AZ, the Netherlands
- Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - Susana Fuentes
- Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
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24
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Chattopadhyay S, Malayil L, Chopyk J, Smyth E, Kulkarni P, Raspanti G, Thomas SB, Sapkota A, Mongodin EF, Sapkota AR. Oral microbiome dysbiosis among cigarette smokers and smokeless tobacco users compared to non-users. Sci Rep 2024; 14:10394. [PMID: 38710815 DOI: 10.1038/s41598-024-60730-2] [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: 10/02/2023] [Accepted: 04/26/2024] [Indexed: 05/08/2024] Open
Abstract
Tobacco use significantly influences the oral microbiome. However, less is known about how different tobacco products specifically impact the oral microbiome over time. To address this knowledge gap, we characterized the oral microbiome of cigarette users, smokeless tobacco users, and non-users over 4 months (four time points). Buccal swab and saliva samples (n = 611) were collected from 85 participants. DNA was extracted from all samples and sequencing was carried out on an Illumina MiSeq, targeting the V3-V4 region of the 16S rRNA gene. Cigarette and smokeless tobacco users had more diverse oral bacterial communities, including a higher relative abundance of Firmicutes and a lower relative abundance of Proteobacteria, when compared to non-users. Non-users had a higher relative abundance of Actinomyces, Granulicatella, Haemophilus, Neisseria, Oribacterium, Prevotella, Pseudomonas, Rothia, and Veillonella in buccal swab samples, compared to tobacco users. While the most abundant bacterial genera were relatively constant over time, some species demonstrated significant shifts in relative abundance between the first and last time points. In addition, some opportunistic pathogens were detected among tobacco users including Neisseria subflava, Bulleidia moorei and Porphyromonas endodontalis. Overall, our results provide a more holistic understanding of the structure of oral bacterial communities in tobacco users compared to non-users.
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Affiliation(s)
- Suhana Chattopadhyay
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Leena Malayil
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Jessica Chopyk
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Eoghan Smyth
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Prachi Kulkarni
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Greg Raspanti
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA
| | - Stephen B Thomas
- Center for Health Equity, School of Public Health, University of Maryland, College Park, MD, USA
| | - Amir Sapkota
- Department of Epidemiology and Biostatistics, School of Public Health, University of Maryland, College Park, MD, USA
| | - Emmanuel F Mongodin
- Department of Microbiology and Immunology, Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Division of Lung Diseases, National Institutes of Health (NIH), National Heart, Lung and Blood Institute (NHLBI), Bethesda, MD, USA
| | - Amy R Sapkota
- Department of Global, Environmental, and Occupational Health, School of Public Health, University of Maryland, College Park, MD, USA.
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25
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Wang X, Yuan W, Yang C, Wang Z, Zhang J, Xu D, Sun X, Sun W. Emerging role of gut microbiota in autoimmune diseases. Front Immunol 2024; 15:1365554. [PMID: 38765017 PMCID: PMC11099291 DOI: 10.3389/fimmu.2024.1365554] [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: 01/04/2024] [Accepted: 04/22/2024] [Indexed: 05/21/2024] Open
Abstract
Accumulating studies have indicated that the gut microbiota plays a pivotal role in the onset of autoimmune diseases by engaging in complex interactions with the host. This review aims to provide a comprehensive overview of the existing literatures concerning the relationship between the gut microbiota and autoimmune diseases, shedding light on the complex interplay between the gut microbiota, the host and the immune system. Furthermore, we aim to summarize the impacts and potential mechanisms that underlie the interactions between the gut microbiota and the host in autoimmune diseases, primarily focusing on systemic lupus erythematosus, rheumatoid arthritis, Sjögren's syndrome, type 1 diabetes mellitus, ulcerative colitis and psoriasis. The present review will emphasize the clinical significance and potential applications of interventions based on the gut microbiota as innovative adjunctive therapies for autoimmune diseases.
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Affiliation(s)
- Xinyi Wang
- School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Wei Yuan
- Department of Radiation Oncology, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Chunjuan Yang
- Department of Central Laboratory, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
- Department of Rheumatology, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Zhangxue Wang
- Department of Rheumatology, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Jin Zhang
- Department of Rheumatology, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Donghua Xu
- Department of Central Laboratory, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
- Department of Rheumatology, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Xicai Sun
- Department of Hospital Office, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
| | - Wenchang Sun
- Department of Central Laboratory, The First Affiliated Hospital of Shandong Second Medical University, Weifang, China
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26
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Bao B, Wang Y, Boudreau P, Song X, Wu M, Chen X, Patik I, Tang Y, Ouahed J, Ringel A, Barends J, Wu C, Balskus E, Thiagarajah J, Liu J, Wessels MR, Lencer WI, Kasper DL, An D, Horwitz BH, Snapper SB. Bacterial Sphingolipids Exacerbate Colitis by Inhibiting ILC3-derived IL-22 Production. Cell Mol Gastroenterol Hepatol 2024; 18:101350. [PMID: 38704148 PMCID: PMC11222953 DOI: 10.1016/j.jcmgh.2024.04.007] [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: 11/20/2023] [Revised: 04/25/2024] [Accepted: 04/25/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUND & AIMS Gut bacterial sphingolipids, primarily produced by Bacteroidetes, have dual roles as bacterial virulence factors and regulators of the host mucosal immune system, including regulatory T cells and invariant natural killer T cells. Patients with inflammatory bowel disease display altered sphingolipids profiles in fecal samples. However, how bacterial sphingolipids modulate mucosal homeostasis and regulate intestinal inflammation remains unclear. METHODS We used dextran sodium sulfate (DSS)-induced colitis in mice monocolonized with Bacteroides fragilis strains expressing or lacking sphingolipids to assess the influence of bacterial sphingolipids on intestinal inflammation using transcriptional, protein, and cellular analyses. Colonic explant and organoid were used to study the function of bacterial sphingolipids. Host mucosal immune cells and cytokines were profiled and characterized using flow cytometry, enzyme-linked immunosorbent assay, and Western blot, and cytokine function in vivo was investigated by monoclonal antibody injection. RESULTS B fragilis sphingolipids exacerbated intestinal inflammation. Mice monocolonized with B fragilis lacking sphingolipids exhibited less severe DSS-induced colitis. This amelioration of colitis was associated with increased production of interleukin (IL)-22 by ILC3. Mice colonized with B fragilis lacking sphingolipids following DSS treatment showed enhanced epithelial STAT3 activity, intestinal cell proliferation, and antimicrobial peptide production. Protection against DSS colitis associated with B fragilis lacking sphingolipids was reversed on IL22 blockade. Furthermore, bacterial sphingolipids restricted epithelial IL18 production following DSS treatment and interfered with IL22 production by a subset of ILC3 cells expressing both IL18R and major histocompatibility complex class II. CONCLUSIONS B fragilis-derived sphingolipids exacerbate mucosal inflammation by impeding epithelial IL18 expression and concomitantly suppressing the production of IL22 by ILC3 cells.
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Affiliation(s)
- Bin Bao
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts; Division of Infectious Diseases, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts; School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, Anhui, China.
| | - Youyuan Wang
- Division of Infectious Diseases, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts; Sun Yat-sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Pavl Boudreau
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts
| | - Xinyang Song
- Department of Immunology, Harvard Medical School, Boston, Massachusetts; Shanghai Institute of Biochemistry and Cell Biology, CAS, Shanghai, China
| | - Meng Wu
- Department of Immunology, Harvard Medical School, Boston, Massachusetts
| | - Xi Chen
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Izabel Patik
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Ying Tang
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Jodie Ouahed
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Amit Ringel
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Jared Barends
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Chuan Wu
- Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Emily Balskus
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts
| | - Jay Thiagarajah
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Jian Liu
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, Anhui, China
| | - Michael R Wessels
- Division of Infectious Diseases, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Wayne Isaac Lencer
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Dennis L Kasper
- Department of Immunology, Harvard Medical School, Boston, Massachusetts
| | - Dingding An
- Division of Infectious Diseases, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Bruce Harold Horwitz
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts
| | - Scott B Snapper
- Division of Gastroenterology, Hepatology, and Nutrition; Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts.
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27
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Narros-Fernández P, Chomanahalli Basavarajappa S, Walsh PT. Interleukin-1 family cytokines at the crossroads of microbiome regulation in barrier health and disease. FEBS J 2024; 291:1849-1869. [PMID: 37300849 DOI: 10.1111/febs.16888] [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: 02/24/2023] [Revised: 05/23/2023] [Accepted: 06/08/2023] [Indexed: 06/12/2023]
Abstract
Recent advances in understanding how the microbiome can influence both the physiology and the pathogenesis of disease in humans have highlighted the importance of gaining a deeper insight into the complexities of the host-microbial dialogue. In tandem with this progress, has been a greater understanding of the biological pathways which regulate both homeostasis and inflammation at barrier tissue sites, such as the skin and the gut. In this regard, the Interleukin-1 family of cytokines, which can be segregated into IL-1, IL-18 and IL-36 subfamilies, have emerged as important custodians of barrier health and immunity. With established roles as orchestrators of various inflammatory diseases in both the skin and intestine, it is now becoming clear that IL-1 family cytokine activity is not only directly influenced by external microbes, but can also play important roles in shaping the composition of the microbiome at barrier sites. This review explores the current knowledge surrounding the evidence that places these cytokines as key mediators at the interface between the microbiome and human health and disease at the skin and intestinal barrier tissues.
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Affiliation(s)
- Paloma Narros-Fernández
- Trinity Translational Medicine Institute, School of Medicine, Trinity College Dublin, Ireland
- National Children's Research Centre, CHI Crumlin, Dublin 12, Ireland
| | - Shrikanth Chomanahalli Basavarajappa
- Trinity Translational Medicine Institute, School of Medicine, Trinity College Dublin, Ireland
- National Children's Research Centre, CHI Crumlin, Dublin 12, Ireland
| | - Patrick T Walsh
- Trinity Translational Medicine Institute, School of Medicine, Trinity College Dublin, Ireland
- National Children's Research Centre, CHI Crumlin, Dublin 12, Ireland
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Sun L, Huang K, Deng Q, Zhu Y, Cao Y, Dong K, Yang S, Li Y, Wu S, Huang R. REV-ERBα negatively regulates NLRP6 transcription and reduces the severity of Salmonella infection in mice. Heliyon 2024; 10:e28432. [PMID: 38628724 PMCID: PMC11019167 DOI: 10.1016/j.heliyon.2024.e28432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Non-typhoidal Salmonella infection is among the most frequent foodborne diseases threatening human health worldwide. The host circadian clock orchestrates daily rhythms to adapt to environmental changes, including coordinating immune function in response to potential infections. However, the molecular mechanisms underlying the interplay between the circadian clock and the immune system in modulating infection processes are incompletely understood. Here, we demonstrate that NLRP6, a novel nucleotide-oligomerization domain (NOD)-like receptor (NLR) family member highly expressed in the intestine, is closely associated with the differential day-night response to Salmonella infection. The core clock component REV-ERBα negatively regulates NLRP6 transcription, leading to the rhythmic expression of NLRP6 and the secretion of IL-18 in intestinal epithelial cells, playing a crucial role in mediating the differential day-night response to Salmonella infection. Activating REV-ERBα with agonist SR9009 in wild-type mice attenuated the severity of infection by decreasing the NLRP6 level in intestinal epithelial cells. Our findings provide new insights into the association between the host circadian clock and the immune response to enteric infections by revealing the regulation of Salmonella infection via the inhibitory effect of REV-ERBα on NLRP6 transcription. Targeting REV-ERBα to modulate NLRP6 activation may be a potential therapeutic strategy for bacterial infections.
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Affiliation(s)
- Lanqing Sun
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
- Department of Laboratory Medicine, Affiliated Hospital of Jiangnan University, Wuxi, 214000 Jiangsu, PR China
| | - Kai Huang
- Orthopaedic Institute, Wuxi 9th People's Hospital Affiliated to Soochow University, Wuxi, 214062 Jiangsu, PR China
- Cambridge–Suda Genomic Resource Center, Jiangsu Key Laboratory of Neuropsychiatric Diseases, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
| | - Qifeng Deng
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275 Guangdong, PR China
| | - Yuan Zhu
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
- Department of Laboratory Medicine, The First Affiliated Hospital of Ningbo University, Ningbo, 315010 Zhejiang, PR China
| | - Yu Cao
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
- Laboratory Department, Children's Hospital of Soochow University, Suzhou, 215025 Jiangsu, PR China
| | - Kedi Dong
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
- Department of Blood Transfusion, The First Affiliated Hospital of Ningbo University, Ningbo, 315010 Zhejiang, PR China
| | - Sidi Yang
- Guangzhou National Laboratory, Guangzhou International BioIsland, Guangzhou, 510005 Guangdong, PR China
| | - Yuanyuan Li
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
| | - Shuyan Wu
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
| | - Rui Huang
- Department of Medical Microbiology, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Key Laboratory of Pathogen Bioscience and Anti-infective Medicine, School of Biology & Basic Medical Sciences, Suzhou Medical College of Soochow University, Suzhou, 215123 Jiangsu, PR China
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Zhang J, Shi X, Wang Y. Exploring causality in the association between gut microbiota and irritable bowel syndrome risk: a large Mendelian randomization study. Aging (Albany NY) 2024; 16:7448-7459. [PMID: 38669090 PMCID: PMC11087118 DOI: 10.18632/aging.205771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 03/18/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND In the past, some observational studies have highlighted the correlation between gut microbiota and irritable bowel syndrome (IBS). However, it is still unknown if the composition of gut microbiota shows a causal effect on the risk of IBS. AIM To conduct Mendelian randomization (MR) analysis of the samples to study the probable causal relationship between the gut microbiota, their taxonomic groups, and the risk of IBS. MATERIALS AND METHODS In this study, the summarized data regarding 211 gut microbiota and their IBS genome-wide association studies (GWAS) were collected from public databases. The causal estimates were determined using five MR techniques, where Inverse Variance Weighted (IVW) regression was employed as the major MR technique. Herein, MR-PRESSO and MR-Egger intercept tests were conducted to prevent horizontal pleiotropy. Cochran's Q test was used to evaluate heterogeneity using the IVW and MR-Egger techniques. RESULTS IVW results showed that gut microbes, belonging to Class Gammaproteobacteria (P = 0.04; OR = 1.45), Family XIII (P = 0.03; OR = 1.34), Family Prevotellaceae (P = 0.003; OR =1.24), and Lachnospiraceae UCG004 (P = 0.049; OR = 1.19) increased the risk of IBS, while Alcaligenaceae (P = 0.03; OR = 0.83, 95% CI: 0.69-0.98) and Coprobacter (P = 0.02; OR = 0.86, 95% CI: 0.76-0.98) decreased the risk of IBS. CONCLUSIONS This study presented novel insights that highlighted the causal relationship between gut microbiota and IBS, and offered new treatment strategies for preventing or treating IBS.
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Affiliation(s)
- Jishi Zhang
- Department of General Surgery, Huangdao District People’s Hospital, Qingdao, Shandong, China
| | - Xinlin Shi
- Department of General Surgery, Huangdao District People’s Hospital, Qingdao, Shandong, China
| | - Yun Wang
- Department of Hepatology/Infectious Diseases, Huangdao District People’s Hospital, Qingdao, Shandong, China
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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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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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Yu J, Zhao Z, Li Y, Chen J, Huang N, Luo Y. Role of NLRP3 in Parkinson's disease: Specific activation especially in dopaminergic neurons. Heliyon 2024; 10:e28838. [PMID: 38596076 PMCID: PMC11002585 DOI: 10.1016/j.heliyon.2024.e28838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder with motor symptoms like bradykinesia, tremors, and balance issues. The pathology is recognized by progressively degenerative nigrostriatal dopaminergic neurons (DANs) loss. Its exact pathogenesis is unclear. Numerous studies have shown that nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) contributes to the pathogenesis of PD. Previous studies have demonstrated that the over-activation of NLRP3 inflammasome in microglia indirectly leads to the loss of DANs, which can worsen PD. In recent years, autopsy analyses of PD patients and studies in PD models have revealed upregulation of NLRP3 expression within DANs and demonstrated that activation of NLRP3 inflammasome in neurons is sufficient to drive neuronal loss, whereas microglial activation occurs after neuronal death, and that inhibition of intraneuronal NLRP3 inflammasome prevents degeneration of DANs. In this review, we provide research evidence related to NLRP3 inflammasome in DANs in PD as well as focus on possible mechanisms of NLRP3 inflammasome activation in neurons, aiming to provide a new way of thinking about the pathogenesis and prevention of PD.
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Affiliation(s)
- Juan Yu
- Department of Neurology, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, 563000, China
| | - Zhanghong Zhao
- Department of Neurology, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, 563000, China
| | - Yuanyuan Li
- National Drug Clinical Trial Institution, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, Guizhou, China
| | - Jian Chen
- Department of Neurology, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, 563000, China
| | - Nanqu Huang
- National Drug Clinical Trial Institution, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, Guizhou, China
| | - Yong Luo
- Department of Neurology, Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, 563000, China
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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 2024:10.1007/s00277-024-05745-5. [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] [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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Serrano Matos YA, Cano J, Shafiq H, Williams C, Sunny J, Cowardin CA. Colonization during a key developmental window reveals microbiota-dependent shifts in growth and immunity during undernutrition. MICROBIOME 2024; 12:71. [PMID: 38589975 PMCID: PMC11003143 DOI: 10.1186/s40168-024-01783-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/28/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND Childhood undernutrition is a major global health challenge with devastating lifelong consequences. Linear growth stunting due to undernutrition has been linked to poor health outcomes, and mothers who experience growth stunting in childhood are more likely to give birth to stunted children later in life. Based on these findings, we hypothesized that intergenerational colonization of mice with microbiota from human donors with undernutrition may recapitulate certain immune and growth changes observed in this disorder. RESULTS To test this hypothesis, we developed a gnotobiotic murine model of undernutrition using microbiota from human infants with healthy or stunted growth trajectories. Intergenerational colonization with microbiota derived from children with growth stunting lead to less linear growth and the development of immune features of undernutrition and enteropathy, including intestinal villus blunting, lower liver IGF-1 and accumulation of intraepithelial lymphocytes and plasma cells in the small intestine. In contrast, colonization after weaning lead to fewer host phenotypic changes between these distinct microbial communities. CONCLUSIONS These results are broadly consistent with previous findings demonstrating that exposure of the immune system to microbial products during the weaning phase is a critical determinant of later life immune function. Overall, our results suggest intergenerational colonization with human microbiota samples is a useful approach with which to investigate microbiota-dependent changes in growth and immunity in early life. Murine models that capture the intergenerational and multifactorial nature of undernutrition are critical to understanding the underlying biology of this disorder. Video Abstract.
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Affiliation(s)
- Yadeliz A Serrano Matos
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Jasmine Cano
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Hamna Shafiq
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Claire Williams
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Julee Sunny
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Carrie A Cowardin
- Division of Pediatric Gastroenterology & Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA.
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA.
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Sundaram B, Tweedell RE, Prasanth Kumar S, Kanneganti TD. The NLR family of innate immune and cell death sensors. Immunity 2024; 57:674-699. [PMID: 38599165 PMCID: PMC11112261 DOI: 10.1016/j.immuni.2024.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 04/12/2024]
Abstract
Nucleotide-binding oligomerization domain (NOD)-like receptors, also known as nucleotide-binding leucine-rich repeat receptors (NLRs), are a family of cytosolic pattern recognition receptors that detect a wide variety of pathogenic and sterile triggers. Activation of specific NLRs initiates pro- or anti-inflammatory signaling cascades and the formation of inflammasomes-multi-protein complexes that induce caspase-1 activation to drive inflammatory cytokine maturation and lytic cell death, pyroptosis. Certain NLRs and inflammasomes act as integral components of larger cell death complexes-PANoptosomes-driving another form of lytic cell death, PANoptosis. Here, we review the current understanding of the evolution, structure, and function of NLRs in health and disease. We discuss the concept of NLR networks and their roles in driving cell death and immunity. An improved mechanistic understanding of NLRs may provide therapeutic strategies applicable across infectious and inflammatory diseases and in cancer.
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Affiliation(s)
- Balamurugan Sundaram
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Rebecca E Tweedell
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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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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Didriksen BJ, Eshleman EM, Alenghat T. Epithelial regulation of microbiota-immune cell dynamics. Mucosal Immunol 2024; 17:303-313. [PMID: 38428738 DOI: 10.1016/j.mucimm.2024.02.008] [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: 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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Zeng Q, Zhang M, Wang R. Causal link between gut microbiome and schizophrenia: a Mendelian randomization study. Psychiatr Genet 2024; 34:43-53. [PMID: 38441075 DOI: 10.1097/ypg.0000000000000361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
OBJECTIVE Some observational studies have shown that gut microbiome is significantly changed in patients with schizophrenia. We aim to identify the genetic causal link between gut microbiome and schizophrenia. METHODS A two-sample Mendelian randomization (MR) study was used to evaluate the causal link between gut microbiome and schizophrenia with 28 gut microbiome-associated genetic instrumental variants chosen from recent MR reports and the largest schizophrenia genome-wide association studies (8-Apr-22 release). RESULTS Inverse variance weighted method showed that genetically increased Bacteroidales_S24-7 (per SD) resulted in increased risk of schizophrenia (OR = 1.110, 95% CI: [1.012-1.217], P = 0.027). Similarly, genetically increased Prevotellaceae promoted schizophrenia risk (OR = 1.124, 95% CI: [1.030-1.228], P = 0.009). However, genetically increased Lachnospiraceae reduced schizophrenia risk (OR = 0.878, 95% CI: [0.785-0.983], P = 0.023). In addition, schizophrenia risk was also suppressed by genetically increased Lactobacillaceae (OR = 0.878, 95% CI: [0.776-0.994], P = 0.040) and Verrucomicrobiaceae (OR = 0.860, 95% CI: [0.749-0.987], P = 0.032). Finally, we did not find any significant results in the causal association of other 23 gut microbiome with schizophrenia. CONCLUSION Our analysis suggests that genetically increased Bacteroidales_S24-7 and Prevotellaceae promotes schizophrenia risk, whereas genetically increased Lachnospiraceae, Lactobacillaceae, and Verrucomicrobiaceae reduces schizophrenia risk. Thus, regulation of the disturbed intestinal microbiota may represent a new therapeutic strategy for patients with schizophrenia.
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Affiliation(s)
- Qi Zeng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
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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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Liang J, Wang Y, Liu B, Dong X, Cai W, Zhang N, Zhang H. Deciphering the intricate linkage between the gut microbiota and Alzheimer's disease: Elucidating mechanistic pathways promising therapeutic strategies. CNS Neurosci Ther 2024; 30:e14704. [PMID: 38584341 PMCID: PMC10999574 DOI: 10.1111/cns.14704] [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: 10/04/2023] [Revised: 12/15/2023] [Accepted: 03/25/2024] [Indexed: 04/09/2024] Open
Abstract
BACKGROUND The gut microbiome is composed of various microorganisms such as bacteria, fungi, and protozoa, and constitutes an important part of the human gut. Its composition is closely related to human health and disease. Alzheimer's disease (AD) is a neurodegenerative disease whose underlying mechanism has not been fully elucidated. Recent research has shown that there are significant differences in the gut microbiota between AD patients and healthy individuals. Changes in the composition of gut microbiota may lead to the development of harmful factors associated with AD. In addition, the gut microbiota may play a role in the development and progression of AD through the gut-brain axis. However, the exact nature of this relationship has not been fully understood. AIMS This review will elucidate the types and functions of gut microbiota and their relationship with AD and explore in depth the potential mechanisms of gut microbiota in the occurrence of AD and the prospects for treatment strategies. METHODS Reviewed literature from PubMed and Web of Science using key terminologies related to AD and the gut microbiome. RESULTS Research indicates that the gut microbiota can directly or indirectly influence the occurrence and progression of AD through metabolites, endotoxins, and the vagus nerve. DISCUSSION This review discusses the future challenges and research directions regarding the gut microbiota in AD. CONCLUSION While many unresolved issues remain regarding the gut microbiota and AD, the feasibility and immense potential of treating AD by modulating the gut microbiota are evident.
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Affiliation(s)
- Junyi Liang
- Heilongjiang University of Traditional Chinese MedicineHarbinHeilongjiang ProvinceChina
| | - Yueyang Wang
- Heilongjiang University of Traditional Chinese MedicineHarbinHeilongjiang ProvinceChina
| | - Bin Liu
- Heilongjiang University of Traditional Chinese MedicineHarbinHeilongjiang ProvinceChina
| | - Xiaohong Dong
- Jiamusi CollegeHeilongjiang University of Traditional Chinese MedicineJiamusiHeilongjiang ProvinceChina
| | - Wenhui Cai
- Heilongjiang University of Traditional Chinese MedicineHarbinHeilongjiang ProvinceChina
| | - Ning Zhang
- Heilongjiang University of Traditional Chinese MedicineHarbinHeilongjiang ProvinceChina
| | - Hong Zhang
- Heilongjiang Jiamusi Central HospitalJiamusiHeilongjiang ProvinceChina
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Zeb F, Naqeeb H, Osaili T, Faris ME, Ismail LC, Obaid RS, Naja F, Radwan H, Hasan H, Hashim M, AlBlooshi S, Alam I. Molecular crosstalk between polyphenols and gut microbiota in cancer prevention. Nutr Res 2024; 124:21-42. [PMID: 38364552 DOI: 10.1016/j.nutres.2024.01.012] [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: 09/18/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 02/18/2024]
Abstract
A growing body of evidence suggests that cancer remains a significant global health challenge, necessitating the development of novel therapeutic approaches. In recent years, the molecular crosstalk between polyphenols and gut microbiota has emerged as a promising pathway for cancer prevention. Polyphenols, abundant in many plant-based foods, possess diverse bioactive properties, including antioxidant, anti-inflammatory, and anticancer activities. The gut microbiota, a complex microbial community residing in the gastrointestinal tract, plays a crucial role in a host's health and disease risks. This review highlights cancer suppressive and oncogenic mechanisms of gut microbiota, the intricate interplay between gut microbiota modulation and polyphenol biotransformation, and the potential therapeutic implications of this interplay in cancer prevention. Furthermore, this review explores the molecular mechanisms underpinning the synergistic effects of polyphenols and the gut microbiota, such as modulation of signaling pathways and immune response and epigenetic modifications in animal and human studies. The current review also summarizes the challenges and future directions in this field, including the development of personalized approaches that consider interindividual variations in gut microbiota composition and function. Understanding the molecular crosstalk could offer new perspectives for the development of personalized cancer therapies targeting the polyphenol-gut axis. Future clinical trials are needed to validate the potential role of polyphenols and gut microbiota as innovative therapeutic strategies for cancer treatment.
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Affiliation(s)
- Falak Zeb
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates.
| | - Huma Naqeeb
- Department of Clinical Nutrition, Shaukat Khanam Cancer Hospital and Research Center Peshawar, Pakistan; Department of Human Nutrition and Dietetics, Women University Mardan, Pakistan
| | - Tareq Osaili
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates; Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, Irbid, Jordan
| | - MoezAllslam Ezzat Faris
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Leila Cheikh Ismail
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates; Department of Women's and Reproductive Health, University of Oxford, Nuffield, Oxford, United Kingdom
| | - Reyad Shakir Obaid
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Farah Naja
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates; Nutrition and Food Sciences Department, American University of Beirut, Beirut, Lebanon
| | - Hadia Radwan
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Hayder Hasan
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Mona Hashim
- Research Institute for Medical and Health Sciences, University of Sharjah, United Arab Emirates; Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, United Arab Emirates
| | - Sharifa AlBlooshi
- College of Natural and Health Sciences, Zayed University, United Arab Emirates
| | - Iftikhar Alam
- Department of Human Nutrition and Dietetics, Bacha Khan University Charsadda, Pakistan
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Oami T, Abtahi S, Shimazui T, Chen CW, Sweat YY, Liang Z, Burd EM, Farris AB, Roland JT, Tsukita S, Ford ML, Turner JR, Coopersmith CM. Claudin-2 upregulation enhances intestinal permeability, immune activation, dysbiosis, and mortality in sepsis. Proc Natl Acad Sci U S A 2024; 121:e2217877121. [PMID: 38412124 DOI: 10.1073/pnas.2217877121] [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: 10/19/2022] [Accepted: 01/16/2024] [Indexed: 02/29/2024] Open
Abstract
Intestinal epithelial expression of the tight junction protein claudin-2, which forms paracellular cation and water channels, is precisely regulated during development and in disease. Here, we show that small intestinal epithelial claudin-2 expression is selectively upregulated in septic patients. Similar changes occurred in septic mice, where claudin-2 upregulation coincided with increased flux across the paracellular pore pathway. In order to define the significance of these changes, sepsis was induced in claudin-2 knockout (KO) and wild-type (WT) mice. Sepsis-induced increases in pore pathway permeability were prevented by claudin-2 KO. Moreover, claudin-2 deletion reduced interleukin-17 production and T cell activation and limited intestinal damage. These effects were associated with reduced numbers of neutrophils, macrophages, dendritic cells, and bacteria within the peritoneal fluid of septic claudin-2 KO mice. Most strikingly, claudin-2 deletion dramatically enhanced survival in sepsis. Finally, the microbial changes induced by sepsis were less pathogenic in claudin-2 KO mice as survival of healthy WT mice injected with cecal slurry collected from WT mice 24 h after sepsis was far worse than that of healthy WT mice injected with cecal slurry collected from claudin-2 KO mice 24 h after sepsis. Claudin-2 upregulation and increased pore pathway permeability are, therefore, key intermediates that contribute to development of dysbiosis, intestinal damage, inflammation, ineffective pathogen control, and increased mortality in sepsis. The striking impact of claudin-2 deletion on progression of the lethal cascade activated during sepsis suggests that claudin-2 may be an attractive therapeutic target in septic patients.
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Affiliation(s)
- Takehiko Oami
- Department of Surgery and Emory Critical Care Center, Emory University School of Medicine, Atlanta, GA 30322
- Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Shabnam Abtahi
- Laboratory of Mucosal Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Takashi Shimazui
- Department of Surgery and Emory Critical Care Center, Emory University School of Medicine, Atlanta, GA 30322
- Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Ching-Wen Chen
- Department of Surgery and Emory Critical Care Center, Emory University School of Medicine, Atlanta, GA 30322
| | - Yan Y Sweat
- Laboratory of Mucosal Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Zhe Liang
- Department of Surgery and Emory Critical Care Center, Emory University School of Medicine, Atlanta, GA 30322
| | - Eileen M Burd
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Alton B Farris
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Joe T Roland
- Epithelial Biology Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37240
| | - Sachiko Tsukita
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo 173-0003, Japan
| | - Mandy L Ford
- Department of Surgery and Emory Transplant Center, Emory University School of Medicine, Atlanta, GA 30322
| | - Jerrold R Turner
- Laboratory of Mucosal Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Craig M Coopersmith
- Department of Surgery and Emory Critical Care Center, Emory University School of Medicine, Atlanta, GA 30322
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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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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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Guo Y, Song J, Yan M, Chen Y, Huang L, Liu J, He Y, Lü Y, Yu W. The role of NLRP6 in the development and progression of neurological diseases. Mol Biol Rep 2024; 51:351. [PMID: 38400865 DOI: 10.1007/s11033-024-09293-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/29/2024] [Indexed: 02/26/2024]
Abstract
The nervous system possesses the remarkable ability to undergo changes in order to store information; however, it is also susceptible to damage caused by invading pathogens or neurodegenerative processes. As a member of nucleotide-binding oligomerization domain-like receptor (NLR) family, the NLRP6 inflammasome serves as a cytoplasmic innate immune sensor responsible for detecting microbe-associated molecular patterns. Upon activation, NLRP6 can recruit the adapter protein apoptosis-associated speck-like protein (ASC) and the inflammatory factors caspase-1 or caspase-11. Consequently, inflammasomes are formed, facilitating the maturation and secretion of pro-inflammatory cytokines such as inflammatory factors-18 (IL-18) and inflammatory factors-1β (IL-1β). Precise regulation of NLRP6 is crucial for maintaining tissue homeostasis, as dysregulated inflammasome activation can contribute to the development of various diseases. Furthermore, NLRP6 may also play a role in the regulation of extraintestinal diseases. In cells of the brain, such as astrocytes and neurons, NLRP6 inflammasome are also present. Here, the assembly and subsequent activation of caspase-1 mediated by NLRP6 contribute to disease progression. This review aims to discuss the structure and function of NLRP6, explain clearly the mechanisms that induce and activate NLRP6, and explore its role within the central and peripheral nervous system.
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Affiliation(s)
- Yiming Guo
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Jiaqi Song
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Mengyu Yan
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Yingxi Chen
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Lihong Huang
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Jiarui Liu
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yurou He
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China
| | - Yang Lü
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Weihua Yu
- Institute of Neuroscience, Chongqing Medical University, No. 1, Yixuayuan Road, Yuzhong District, Chongqing, 400016, China.
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Li K, Yang M, Tian M, Jia L, Wu Y, Du J, Yuan L, Li L, Ma Y. The preventive effects of Lactobacillus casei 03 on Escherichia coli-induced mastitis in vitro and in vivo. J Inflamm (Lond) 2024; 21:5. [PMID: 38395896 PMCID: PMC10893599 DOI: 10.1186/s12950-024-00378-x] [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: 11/11/2022] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Lactobacillus casei possesses many kinds of bioactivities, such as anti-inflammation and anti-oxidant, and has been applied to treating multiple inflammatory diseases. However, its role in mastitis prevention has remained ambiguous. METHODS This study aimed to examine the mechanisms underlying the preventive effects of L. casei 03 against E. coli- mastitis utilizing bovine mammary epithelial cells (BMECs) and a mouse model. RESULTS In vitro assays revealed pretreatment with L. casei 03 reduced the apoptotic ratio and the mRNA expression levels of IL1β, IL6 and TNFα and suppressed phosphorylation of p65, IκBα, p38, JNK and ERK in the NF-κB signaling pathway and MAPK signaling pathway. Furthermore, in vivo tests indicated that intramammary infusion of L. casei 03 relieved pathological changes, reduced the secretion of IL1β, IL6 and TNFα and MPO activity in the mouse mastitis model. CONCLUSIONS These data suggest that L. casei 03 exerts protective effects against E. coli-induced mastitis in vitro and in vivo and may hold promise as a novel agent for the prevention and treatment of mastitis.
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Affiliation(s)
- Ke Li
- College of Veterinary Medicine, Shandong Agricultural University, 271018, Taian, Shandong, China
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Ming Yang
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Mengyue Tian
- College of Life Science and Food Engineering, Hebei University of Engineering, 056038, Handan, Hebei, China
| | - Li Jia
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Yinghao Wu
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Jinliang Du
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center, Ministry of Agriculture, Chinese Academy of Fishery Sciences, 214081, Wuxi, China
| | - Lining Yuan
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Lianmin Li
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China
| | - Yuzhong Ma
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lekai South Street, 071001, Baoding, Hebei, China.
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Hagihara M, Ariyoshi T, Eguchi S, Oka K, Takahashi M, Kato H, Shibata Y, Umemura T, Mori T, Miyazaki N, Hirai J, Asai N, Mori N, Mikamo H. Oral Clostridium butyricum on mice endometritis through uterine microbiome and metabolic alternations. Front Microbiol 2024; 15:1351899. [PMID: 38450161 PMCID: PMC10915095 DOI: 10.3389/fmicb.2024.1351899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/02/2024] [Indexed: 03/08/2024] Open
Abstract
Endometritis occurs frequently in humans and animals, which can negatively affect fertility and cause preterm parturition syndrome. Orally administered Clostridium butyricum, a butyrate-producing gram-positive anaerobe, exhibits anti-inflammatory effects. However, the precise mechanism by which Clostridium butyricum attenuates endometritis remains unclear. This in vivo study evaluated the anti-inflammatory effects of orally administered Clostridium butyricum on uterine tissues. In addition, we conducted uterine microbiome and lipid metabolome analyses to determine the underlying mechanisms. Female Balb/c mice were divided into the following four groups (n = 5-20): (1) mock group, (2) only operation group (mice only underwent operation to exposed uterine horns from the side), (3) control group (mice underwent the same operation with the operation group + perfusion of lipopolysaccharide solution from uterine horns), and (4) Clostridium butyricum administration group (mice underwent the same operation with the control group + oral Clostridium butyricum administration from days 0 to 9). Clostridium butyricum was administered via oral gavage. On day 10, we investigated protein expression, uterine microbiome, and lipid metabolism in uterine tissues. Consequently, orally administered Clostridium butyricum altered the uterine microbiome and induced proliferation of Lactobacillus and Limosilactobacillus species. The effects can contribute to show the anti-inflammatory effect through the interferon-β upregulation in uterine tissues. Additionally, oral Clostridium butyricum administration resulted in the upregulations of some lipid metabolites, such as ω-3 polyunsaturated fatty acid resolvin D5, in uterine tissues, and resolvin D5 showed anti-inflammatory effects. However, the orally administered Clostridium butyricum induced anti-inflammatory effect was attenuated with the deletion of G protein-coupled receptor 120 and 15-lipooxgenase inhibition. In conclusion, Clostridium butyricum in the gut has anti-inflammatory effects on uterine tissues through alterations in the uterine microbiome and lipid metabolism. This study revealed a gut-uterus axis mechanism and provided insights into the treatment and prophylaxis of endometritis.
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Affiliation(s)
- Mao Hagihara
- Department of Molecular Epidemiology and Biomedical Sciences, Aichi Medical University, Nagakute, Japan
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Tadashi Ariyoshi
- R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Shuhei Eguchi
- R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | - Kentaro Oka
- R&D Division, Miyarisan Pharmaceutical Co., Ltd., Saitama, Japan
| | | | - Hideo Kato
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Yuichi Shibata
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Takumi Umemura
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Takeshi Mori
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Narimi Miyazaki
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Jun Hirai
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Nobuaki Mori
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
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48
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Chen X, Wei J, Zhang Y, Zhang Y, Zhang T. Crosstalk between gut microbiome and neuroinflammation in pathogenesis of HIV-associated neurocognitive disorder. J Neurol Sci 2024; 457:122889. [PMID: 38262196 DOI: 10.1016/j.jns.2024.122889] [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] [Revised: 12/14/2023] [Accepted: 01/11/2024] [Indexed: 01/25/2024]
Abstract
HIV-associated neurocognitive disorder (HAND) has become a chronic neurodegenerative disease affecting the quality of life in people living with HIV (PLWH). Despite an established association between HAND and neuroinflammation induced by HIV proteins (gp120, Tat, Rev., Nef, and Vpr), the pathogenesis of HAND remains to be fully elucidated. Accumulating evidence demonstrated that the gut microbiome is emerging as a critical regulator of various neurodegenerative diseases (e.g., Parkinson's disease, Alzheimer's disease), suggesting that the crosstalk between the gut microbiome and neuroinflammation may contribute to the development of these diseases, for example, gut dysbiosis and microbiota-derived metabolites can trigger inflammation in the brain. However, the potential role of the gut microbiome in the pathogenesis of HAND remains largely unexplored. In this review, we aim to discuss and elucidate the HAND pathogenesis correlated with gut microbiome and neuroinflammation, and intend to explore the probable intervention strategies for HAND.
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Affiliation(s)
- Xue Chen
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Jiaqi Wei
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Yang Zhang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Yulin Zhang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China.
| | - Tong Zhang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China.
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49
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El Tekle G, Andreeva N, Garrett WS. The Role of the Microbiome in the Etiopathogenesis of Colon Cancer. Annu Rev Physiol 2024; 86:453-478. [PMID: 38345904 DOI: 10.1146/annurev-physiol-042022-025619] [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] [Indexed: 02/15/2024]
Abstract
Studies in preclinical models support that the gut microbiota play a critical role in the development and progression of colorectal cancer (CRC). Specific microbial species and their corresponding virulence factors or associated small molecules can contribute to CRC development and progression either via direct effects on the neoplastic transformation of epithelial cells or through interactions with the host immune system. Induction of DNA damage, activation of Wnt/β-catenin and NF-κB proinflammatory pathways, and alteration of the nutrient's availability and the metabolic activity of cancer cells are the main mechanisms by which the microbiota contribute to CRC. Within the tumor microenvironment, the gut microbiota alter the recruitment, activation, and function of various immune cells, such as T cells, macrophages, and dendritic cells. Additionally, the microbiota shape the function and composition of cancer-associated fibroblasts and extracellular matrix components, fashioning an immunosuppressive and pro-tumorigenic niche for CRC. Understanding the complex interplay between gut microbiota and tumorigenesis can provide therapeutic opportunities for the prevention and treatment of CRC.
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Affiliation(s)
- Geniver El Tekle
- Department of Immunology and Infectious Diseases and Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA;
- The Harvard Chan Microbiome in Public Health Center, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts, USA
| | - Natalia Andreeva
- Department of Immunology and Infectious Diseases and Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA;
- The Harvard Chan Microbiome in Public Health Center, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Wendy S Garrett
- Department of Immunology and Infectious Diseases and Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA;
- The Harvard Chan Microbiome in Public Health Center, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
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50
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Hajra D, Kirthivasan N, Chakravortty D. Symbiotic Synergy from Sponges to Humans: Microflora-Host Harmony Is Crucial for Ensuring Survival and Shielding against Invading Pathogens. ACS Infect Dis 2024; 10:317-336. [PMID: 38170903 DOI: 10.1021/acsinfecdis.3c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Gut microbiota plays several roles in the host organism's metabolism and physiology. This phenomenon holds across different species from different kingdoms and classes. Different species across various classes engage in continuous crosstalk via various mechanisms with their gut microbiota, ensuring homeostasis of the host. In this Review, the diversity of the microflora, the development of the microflora in the host, its regulations by the host, and its functional implications on the host, especially in the context of dysbiosis, are discussed across different organisms from sponges to humans. Overall, our review aims to address the indispensable nature of the microbiome in the host's survival, fitness, and protection against invading pathogens.
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Affiliation(s)
- Dipasree Hajra
- Department of Microbiology & Cell Biology, Indian Institute of Science, Bangalore, Karnataka-560012, India
| | - Nikhita Kirthivasan
- Undergraduate Programme, Indian Institute of Science, Bangalore, Karnataka-560012, India
| | - Dipshikha Chakravortty
- Department of Microbiology & Cell Biology, Indian Institute of Science, Bangalore, Karnataka-560012, India
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