|
1
|
Yang Y, Wen C, Zheng S, Song F, Liu Y, Yao X, Tang Y, Feng X, Chen J, Yang F. Lactobacillus fermentum Alleviates the Colorectal Inflammation Induced by Low-Dose Sub-Chronic Microcystin-LR Exposure. Toxins (Basel) 2023; 15:579. [PMID: 37756005 PMCID: PMC10536654 DOI: 10.3390/toxins15090579] [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: 08/03/2023] [Revised: 08/30/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023] Open
Abstract
Microcystin-LR (MC-LR) contamination is a worldwide environmental problem that poses a grave threat to the water ecosystem and public health. Exposure to MC-LR has been associated with the development of intestinal injury, but there are no effective treatments for MC-LR-induced intestinal disease. Probiotics are "live microorganisms that are beneficial to the health of the host when administered in sufficient quantities". It has been demonstrated that probiotics can prevent or treat a variety of human diseases; however, their ability to mitigate MC-LR-induced intestinal harm has not yet been investigated. The objective of this study was to determine whether probiotics can mitigate MC-LR-induced intestinal toxicity and its underlying mechanisms. We first evaluated the pathological changes in colorectal tissues using an animal model with sub-chronic exposure to low-dose MC-LR, HE staining to assess colorectal histopathologic changes, qPCR to detect the expression levels of inflammatory factors in colorectal tissues, and WB to detect the alterations on CSF1R signaling pathway proteins in colorectal tissues. Microbial sequencing analysis and screening of fecal microorganisms differential to MC-LR treatment in mice. To investigate the role of microorganisms in MC-LR-induced colorectal injury, an in vitro model of MC-LR co-treatment with microorganisms was developed. Our findings demonstrated that MC-LR treatment induced an inflammatory response in mouse colorectal tissues, promoted the expression of inflammatory factors, activated the CSF1R signaling pathway, and significantly decreased the abundance of Lactobacillus. In a model of co-treatment with MC-LR and Lactobacillus fermentum (L. fermentum), it was discovered that L. fermentum substantially reduced the incidence of the colorectal inflammatory response induced by MC-LR and inhibited the protein expression of the CSF1R signaling pathway. This is the first study to suggest that L. fermentum inhibits the CSF1R signaling pathway to reduce the incidence of MC-LR-induced colorectal inflammation. This research may provide an excellent experimental foundation for the development of strategies for the prevention and treatment of intestinal diseases in MC-LR.
Collapse
Affiliation(s)
- Yue Yang
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410017, China; (X.F.); (J.C.)
| | - Cong Wen
- Changsha Yuhua District Center for Disease Control and Prevention, Changsha 410014, China;
| | - Shuilin Zheng
- Changsha Center for Disease Control and Prevention, Changsha 410004, China;
| | - Fengmei Song
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
| | - Ying Liu
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
| | - Xueqiong Yao
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
| | - Yan Tang
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
| | - Xiangling Feng
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410017, China; (X.F.); (J.C.)
| | - Jihua Chen
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410017, China; (X.F.); (J.C.)
| | - Fei Yang
- The Key Laboratory of Typical Environmental Pollution and Health Hazards of Hunan Province, Department of Epidemiology and Health Statistics, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, China; (Y.Y.); (F.S.); (Y.L.); (X.Y.); (Y.T.)
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410017, China; (X.F.); (J.C.)
- Hengyang Medical School, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| |
Collapse
|
|
2
|
Yang Y, Gong P, Long X, Jiang Y, Ye M, Tao S, Su Y, Yang F, Tian L. Microcystin-LR Induces and Aggravates Colitis through NLRP3 Inflammasome-Mediated Pyroptosis in Mice. Toxins (Basel) 2023; 15:447. [PMID: 37505716 PMCID: PMC10467093 DOI: 10.3390/toxins15070447] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/13/2023] [Accepted: 06/27/2023] [Indexed: 07/29/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic, lifelong gastrointestinal disease, characterized by periods of activity and remission. The etiology of IBD is closely related to environmental factors. Previous studies have shown that the cyanotoxin microcystin-LR (MC-LR) causes intestinal damage, even IBD. To explore MC-LR's effects and potential mechanisms on IBD occurrence and development, we used dextran-sulfate sodium gavage (DSS) and MC-LR together for the first time in mice. There were four groups of mice: (A) mice given PBS gavage (control, CT); (B) mice given 3% DSS gavage (DSS); (C) mice given 200 µg/kg MC-LR gavage (MC-LR); and (D) mice given 3% DSS + 200 µg/kg MC-LR gavage (DSS + MC-LR). Compared with the CT group, the MC-LR group and the DSS group demonstrated more severe colitis results, which presented as higher weight loss, an increased Disease Activity Index (DAI) score, shorter colon length, a higher degree of tissue structural damage, more apoptotic cells, and greater pro-inflammatory cytokines. Similarly, the DSS + MC-LR group showed more severe colitis compared with the DSS group. Subsequent experiments confirmed that MC-LR or DSS increased the expression of pyroptosis-related proteins mediated by the nucleotide-binding domain-like receptor protein 3 (NLRP3). Likewise, compared with the DSS group, the DSS + MC-LR group expressed these proteins at a higher level. In conclusion, our research is the first to show that MC-LR may induce colitis, and even IBD, through NLRP3 inflammasome-mediated pyroptosis, and it could aggravate DSS-induced colitis in the same way.
Collapse
Affiliation(s)
- Yue Yang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| | - Pan Gong
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| | - Xiuyan Long
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| | - Yuanjuan Jiang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang 421001, China;
| | - Mingmei Ye
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| | - Sifan Tao
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| | - Yahui Su
- Xiangya School of Medicine, Central South University, 172 Tongzipo Road, Changsha 410078, China;
| | - Fei Yang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang 421001, China;
- Hengyang Medical School, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Li Tian
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410078, China; (Y.Y.); (P.G.); (X.L.); (M.Y.); (S.T.)
| |
Collapse
|
|
3
|
Yang Y, Zheng S, Chu H, Du C, Chen M, Emran MY, Chen J, Yang F, Tian L. Subchronic Microcystin-LR Aggravates Colorectal Inflammatory Response and Barrier Disruption via Raf/ERK Signaling Pathway in Obese Mice. Toxins (Basel) 2023; 15:toxins15040262. [PMID: 37104200 PMCID: PMC10145857 DOI: 10.3390/toxins15040262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/03/2023] [Accepted: 03/14/2023] [Indexed: 04/05/2023] Open
Abstract
Microcystin-LR (MC-LR) is an extremely poisonous cyanotoxin that poses a threat to ecosystems and human health. MC-LR has been reported as an enterotoxin. The objective of this study was to determine the effect and the mechanism of subchronic MC-LR toxicity on preexisting diet-induced colorectal damage. C57BL/6J mice were given either a regular diet or a high-fat diet (HFD) for 8 weeks. After 8 weeks of feeding, animals were supplied with vehicle or 120 μg/L MC-LR via drinking water for another 8 weeks, and their colorectal were stained with H&E to detect microstructural alterations. Compared with the CT group, the HFD and MC-LR + HFD-treatment group induced a significant weight gain in the mice. Histopathological findings showed that the HFD- and MC-LR + HFD-treatment groups caused epithelial barrier disruption and infiltration of inflammatory cells. The HFD- and MC-LR + HFD-treatment groups raised the levels of inflammation mediator factors and decreased the expression of tight junction-related factors compared to the CT group. The expression levels of p-Raf/Raf and p-ERK/ERK in the HFD- and MC-LR + HFD-treatment groups were significantly increased compared with the CT group. Additionally, treated with MC-LR + HFD, the colorectal injury was further aggravated compared with the HFD-treatment group. These findings suggest that by stimulating the Raf/ERK signaling pathway, MC-LR may cause colorectal inflammation and barrier disruption. This study suggests that MC-LR treatment may exacerbate the colorectal toxicity caused by an HFD. These findings offer unique insights into the consequences and harmful mechanisms of MC-LR and provide strategies for preventing and treating intestinal disorders.
Collapse
Affiliation(s)
- Yue Yang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Shuilin Zheng
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province, Department of Education, Hengyang Medical School, University of South China, Hengyang 421001, China
- Changsha Center for Disease Control and Prevention, Changsha 410004, China
| | - Hanyu Chu
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province, Department of Education, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Can Du
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Mengshi Chen
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Mohammed Y. Emran
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Jihua Chen
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
| | - Fei Yang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha 410078, China
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, The Key Laboratory of Ecological Environment and Critical Human Diseases Prevention of Hunan Province, Department of Education, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Li Tian
- Department of Gastroenterology, Third Xiangya Hospital, Central South University, Changsha 410013, China
| |
Collapse
|
|
4
|
Liu L, Xu M, Lan R, Hu D, Li X, Qiao L, Zhang S, Lin X, Yang J, Ren Z, Xu J. Bacteroides vulgatus attenuates experimental mice colitis through modulating gut microbiota and immune responses. Front Immunol 2022; 13:1036196. [PMID: 36531989 PMCID: PMC9750758 DOI: 10.3389/fimmu.2022.1036196] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2022] Open
Abstract
Introduction Bacteroides vulgatus is one of the predominant Bacteroides species in the human gut and exerts a series of beneficial effects. The aim of this study was to investigate the protective role of B. vulgatus Bv46 in a dextran sodium sulfate (DSS) induced colitis mouse model. Methods Female C57BL/6J mice were given 3% DSS in drinking water to induce colitis and simultaneously treated with B. vulgatus Bv46 by gavage for 7 days. Daily weight and disease activity index (DAI) of mice were recorded, and the colon length and histological changes were evaluated. The effects of B. vulgatus Bv46 on gut microbiota composition, fecal short chain fatty acids (SCFAs) concentration, transcriptome of colon, colonic cytokine level and cytokine secretion of RAW 264·7 macrophage cell line activated by the lipopolysaccharide (LPS) were assessed. Results and Discussion B. vulgatus Bv46 significantly attenuated symptoms of DSS-induced colitis in mice, including reduced DAI, prevented colon shortening, and alleviated colon histopathological damage. B. vulgatus Bv46 modified the gut microbiota community of colitis mice and observably increased the abundance of Parabacteroides, Bacteroides, Anaerotignum and Alistipes at the genus level. In addition, B. vulgatus Bv46 treatment decreased the expression of colonic TNF-α, IL-1β and IL-6 in DSS-induced mouse colitis in vivo, reduced the secretion of TNF-α, IL-1β and IL-6 in macrophages stimulated by LPS in vitro, and downregulated the expression of Ccl19, Cd19, Cd22, Cd40 and Cxcr5 genes in mice colon, which mainly participate in the regulation of B cell responses. Furthermore, oral administration of B. vulgatus Bv46 notably increased the contents of fecal SCFAs, especially butyric acid and propionic acid, which may contribute to the anti-inflammatory effect of B. vulgatus Bv46. Supplementation with B. vulgatus Bv46 serves as a promising strategy for the prevention of colitis.
Collapse
Affiliation(s)
- Liyun Liu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
| | - Mingchao Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Dalong Hu
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Xianping Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Lei Qiao
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Suping Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaoying Lin
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jing Yang
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhihong Ren
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China,*Correspondence: Jianguo Xu, ; Zhihong Ren,
| | - Jianguo Xu
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China,Research Units of Discovery of Unknown Bacteria and Function, Chinese Academy of Medical Sciences, Beijing, China,Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China,Institute of Public Health, Nankai University, Tianjin, China,*Correspondence: Jianguo Xu, ; Zhihong Ren,
| |
Collapse
|
|
5
|
Lad A, Breidenbach JD, Su RC, Murray J, Kuang R, Mascarenhas A, Najjar J, Patel S, Hegde P, Youssef M, Breuler J, Kleinhenz AL, Ault AP, Westrick JA, Modyanov NN, Kennedy DJ, Haller ST. As We Drink and Breathe: Adverse Health Effects of Microcystins and Other Harmful Algal Bloom Toxins in the Liver, Gut, Lungs and Beyond. Life (Basel) 2022; 12:life12030418. [PMID: 35330169 PMCID: PMC8950847 DOI: 10.3390/life12030418] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/03/2022] [Accepted: 03/08/2022] [Indexed: 12/19/2022] Open
Abstract
Freshwater harmful algal blooms (HABs) are increasing in number and severity worldwide. These HABs are chiefly composed of one or more species of cyanobacteria, also known as blue-green algae, such as Microcystis and Anabaena. Numerous HAB cyanobacterial species produce toxins (e.g., microcystin and anatoxin—collectively referred to as HAB toxins) that disrupt ecosystems, impact water and air quality, and deter recreation because they are harmful to both human and animal health. Exposure to these toxins can occur through ingestion, inhalation, or skin contact. Acute health effects of HAB toxins have been well documented and include symptoms such as nausea, vomiting, abdominal pain and diarrhea, headache, fever, and skin rashes. While these adverse effects typically increase with amount, duration, and frequency of exposure, susceptibility to HAB toxins may also be increased by the presence of comorbidities. The emerging science on potential long-term or chronic effects of HAB toxins with a particular emphasis on microcystins, especially in vulnerable populations such as those with pre-existing liver or gastrointestinal disease, is summarized herein. This review suggests additional research is needed to define at-risk populations who may be helped by preventative measures. Furthermore, studies are required to develop a mechanistic understanding of chronic, low-dose exposure to HAB toxins so that appropriate preventative, diagnostic, and therapeutic strategies can be created in a targeted fashion.
Collapse
Affiliation(s)
- Apurva Lad
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Joshua D. Breidenbach
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Robin C. Su
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Jordan Murray
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Rebecca Kuang
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Alison Mascarenhas
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - John Najjar
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Shivani Patel
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Prajwal Hegde
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Mirella Youssef
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Jason Breuler
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Andrew L. Kleinhenz
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - Andrew P. Ault
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA;
| | - Judy A. Westrick
- Lumigen Instrumentation Center, Department of Chemistry, Wayne State University, Detroit, MI 48202, USA;
| | - Nikolai N. Modyanov
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
| | - David J. Kennedy
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
- Correspondence: (D.J.K.); (S.T.H.); Tel.: +1-419-383-6822 (D.J.K.); +1-419-383-6859 (S.T.H.)
| | - Steven T. Haller
- College of Medicine and Life Science, University of Toledo, Toledo, OH 43614, USA; (A.L.); (J.D.B.); (R.C.S.); (J.M.); (R.K.); (A.M.); (J.N.); (S.P.); (P.H.); (M.Y.); (J.B.); (A.L.K.); (N.N.M.)
- Correspondence: (D.J.K.); (S.T.H.); Tel.: +1-419-383-6822 (D.J.K.); +1-419-383-6859 (S.T.H.)
| |
Collapse
|
|
6
|
Hayashi Y, Nakase H. The Molecular Mechanisms of Intestinal Inflammation and Fibrosis in Crohn’s Disease. Front Physiol 2022; 13:845078. [PMID: 35222098 PMCID: PMC8874128 DOI: 10.3389/fphys.2022.845078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 01/26/2022] [Indexed: 12/20/2022] Open
Abstract
Crohn’s disease (CD) is an inflammatory bowel disease (IBD) with repeated remissions and relapses. As the disease progresses, fibrosis and narrowing of the intestine occur, leading to severe complications such as intestinal obstruction. Endoscopic balloon dilatation, surgical stricture plasty, and bowel resection have been performed to treat intestinal stenosis. The clinical issue is that some patients with CD have a recurrence of intestinal stenosis even after the medical treatments. On the other hand, there exist no established medical therapies to prevent stenosis. With the progressive intestinal inflammation, cytokines and growth factors, including transforming growth factor (TGF-β), stimulate intestinal myofibroblasts, contributing to fibrosis of the intestine, smooth muscle hypertrophy, and mesenteric fat hypertrophy. Therefore, chronically sustained inflammation has long been considered a cause of intestinal fibrosis and stenosis. Still, even after the advent of biologics and tighter control of inflammation, intestinal fibrosis’s surgical rate has not necessarily decreased. It is essential to elucidate the mechanisms involved in intestinal fibrosis in CD from a molecular biological level to overcome clinical issues. Recently, much attention has been paid to several key molecules of intestinal fibrosis: peroxisome proliferator-activating receptor gamma (PPARγ), toll-like receptor 4 (TLR4), adherent-invasive Escherichia coli (AIEC), Th17 immune response, and plasminogen activator inhibitor 1 (PAI-1). As a major problem in the treatment of CD, the pathophysiology of patients with CD is not the same and varies depending on each patient. It is necessary to integrate these key molecules for a better understanding of the mechanism of intestinal inflammation and fibrosis.
Collapse
|
|
7
|
Koto Y, Kawahara H, Kurata K, Yoshikiyo K, Hashiguchi A, Okano K, Sugiura N, Shimizu K, Shimizu H. Microcystin-LR incorporated into colonic cells through probenecid-sensitive transporters leads to upregulated MCP-1 expression induced by JNK activation. Toxicol Rep 2022; 9:937-944. [PMID: 35875256 PMCID: PMC9301606 DOI: 10.1016/j.toxrep.2022.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 11/29/2022] Open
Abstract
Harmful algae that inhabit eutrophic lakes produce cyanotoxic microcystins. Therefore, the relationship between chronic exposure to microcystins via drinking water and organ disorders has been investigated. The present study aimed to determine whether representative microcystin-LR is involved in increased monocyte chemoattractant protein-1 (MCP-1) expression in rat colonic mucosa and enterocyte-like differentiated Caco-2 cells. The mRNA expression of MCP-1 was increased in the colons of rats administered with microcystin-LR, compared with controls. Furthermore, mRNA levels of MCP-1 expression significantly and positively correlated with those of Adhesion G Protein-Coupled Receptor E1 (ADGRE1; EMR1; F4/80), an indicator of macrophage infiltration, suggesting that increased MCP-1 expression induced by microcystin-LR promotes macrophage infiltration into the colon. Microcystin-LR increased MCP-1 expression in enterocyte-like differentiated Caco-2 cells, by activating c-Jun N-terminal kinase (JNK), but not extracellular signal-regulated kinase (ERK) or p38. The findings of transporter inhibitors indicated that microcystin-LR is incorporated into cells via ATP Binding Cassette (ABC) or solute carrier (SLC) transporters other than the organic anion transporting polypeptides (OATPs)1B1, 1B3, 2B1, and 1A2, which this leads to increased MCP-1 expression in the colon through activating JNK. Thus, increased MCP-1 expression induced by microcystin-LR might be a trigger for initiating tumorigenesis with inflammation in the colon because increased MCP-1 expression induces inflammation associated with macrophage infiltration into the colon, and chronic inflammation is associated with the initiation of tumorigenesis. Microcystin-LR upregulated colonic MCP-1 expression in rats. Increased MCP-1 expression correlated with accumulated macrophages in rat colon. Microcystin-LR evoked MCP-1 expression by activating JNK in cultured colon cells. Rifampicin was not involved in microcystin-LR-induced JNK activation. Probenecid suppressed JNK/MCP-1 pathway activation induced by microcystin-LR.
Collapse
Affiliation(s)
- Yoshihito Koto
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
| | - Hideaki Kawahara
- Graduate School of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
| | - Koichi Kurata
- Graduate School of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
| | - Keisuke Yoshikiyo
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Graduate School of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
| | - Ayumi Hashiguchi
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Graduate School of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Institute of Environmental Systems Science, Academic Assembly, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
| | - Kunihiro Okano
- Faculty of Bioresource Sciences, Akita Prefectural University, Akita 010-0195, Japan
| | - Norio Sugiura
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan
| | - Kazuya Shimizu
- Faculty of Life Sciences, Toyo University, Gunma 374-0193, Japan
| | - Hidehisa Shimizu
- Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Graduate School of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Raman Project Center for Medical and Biological Applications, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Project Center for Fortification of Local Specialty Food Functions, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Interdisciplinary Center for Science Research, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan
- Correspondence to: Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, 1060 Nishikawatsu-Cho, Matsue, Shimane 690-8504, Japan.
| |
Collapse
|
|
8
|
Zhang Y, Zhu P, Wu X, Yuan T, Su Z, Chen S, Zhou Y, Tao WA. Microcystin-LR Induces NLRP3 Inflammasome Activation via FOXO1 Phosphorylation, Resulting in Interleukin-1β Secretion and Pyroptosis in Hepatocytes. Toxicol Sci 2021; 179:53-69. [PMID: 33078829 DOI: 10.1093/toxsci/kfaa159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Microcystin-LR (MC-LR), the most common and toxic microcystin (MC) present in freshwater, poses a substantial threat to human health, especially hepatotoxicity. Recent evidence reveals that the NLRP3 inflammasome plays an important role in liver injury by activating caspase-1 to promote interleukin-1β (IL-1β) secretion. In this study, we investigated the possible role of NLRP3 inflammasome activation in MC-LR-induced mouse liver inflammatory injury. We found that MC-LR administered to mice by oral gavage mainly accumulated in liver and induced the activation of the NLRP3 inflammasome and production of mature IL-1β. Additionally, we observed an increase in the levels of NLRP3 inflammasome-related proteins and the proportion of pyroptosis in MC-LR-treated AML-12 cells. We also found that inhibition of NLRP3 in mice attenuated MC-LR-induced IL-1β production, indicating an essential role for NLRP3 in MC-LR-induced liver inflammatory injury. In addition, we found that inhibition of FOXO1 by AKT-mediated hyperphosphorylation, due to protein phosphatase 2A (PP2A) inhibition, is required for MC-LR-induced expression of NLRP3. Taken together, our in vivo and in vitro findings suggest a model in which the NLRP3 inflammasome activation, a result of AKT-mediated hyperphosphorylation of FOXO1 through inhibition of PP2A, plays a key role in MC-LR-induced liver inflammatory injury via IL-1β secretion and pyroptotic cell death.
Collapse
Affiliation(s)
- Yali Zhang
- Department of Biochemistry and Molecular Biology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Peipei Zhu
- Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907
| | - Xiaofeng Wu
- Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907
| | - Tianli Yuan
- Department of Biochemistry and Molecular Biology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Zhangyao Su
- Department of Biochemistry and Molecular Biology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Shiyin Chen
- Department of Biochemistry and Molecular Biology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Yajun Zhou
- Department of Biochemistry and Molecular Biology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, China
| | - Weiguo Andy Tao
- Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907
| |
Collapse
|
|
9
|
Anka Idrissi D, Senhaji N, Aouiss A, Khalki L, Tijani Y, Zaid N, Marhoume FZ, Naya A, Oudghiri M, Kabine M, Zaid Y. IL-1 and CD40/CD40L platelet complex: elements of induction of Crohn's disease and new therapeutic targets. Arch Pharm Res 2021; 44:117-132. [PMID: 33394309 DOI: 10.1007/s12272-020-01296-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 11/21/2020] [Indexed: 12/15/2022]
Abstract
Ulcerative colitis (UC) and Crohn's disease (CD) are chronic and multifactorial diseases that affect the intestinal tract, both characterized by recurrent inflammation of the intestinal mucosa, resulting in abdominal pain, diarrhea, vomiting and, rectal bleeding. Inflammatory bowel diseases (IBD) regroup these two disorders. The exact pathological mechanism of IBD remains ambiguous and poorly known. In genetically predisposed patients, defects in intestinal mucosal barrier are due to an uncontrolled inflammatory response to normal flora. In addition to the genetic predisposition, these defects could be triggered by environmental factors or by a specific lifestyle which is widely accepted as etiological hypothesis. The involvement of the CD40/CD40L platelet complex in the development of IBD has been overwhelmingly demonstrated. CD40L is climacteric in cell signalling in innate and adaptive immunity, the CD40L expression on the platelet cell surface gives them an immunological competence. The IL-1, a major inflammation mediator could be involved in different ways in the development of IBD. Here, we provide a comprehensive review regarding the role of platelet CD40/CD40L in the pathophysiological effect of IL-1 in the development of Crohn's disease (CD). This review could potentially help future approaches aiming to target these two pathways for therapeutic purposes and elucidate the immunological mechanisms driving gut inflammation.
Collapse
Affiliation(s)
- Doha Anka Idrissi
- Department of Biology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Nezha Senhaji
- Laboratory of Genetic and Molecular Pathology, Faculty of Medicine, Hassan II University, Casablanca, Morocco
| | - Asmae Aouiss
- Department of Biology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Loubna Khalki
- Faculty of Medicine, Mohammed VI University of Health Sciences (UM6SS), Casablanca, Morocco
| | - Youssef Tijani
- Faculty of Medicine, Mohammed VI University of Health Sciences (UM6SS), Casablanca, Morocco
| | - Nabil Zaid
- Faculty of Sciences, Department of Biology, Mohammed V University, Rabat, Morocco
| | - Fatima Zahra Marhoume
- Faculty of Sciences and Technology, Laboratory of Biochemistry and Neuroscience, Integrative and Computational Neuroscience Team, Hassan First University, Settat, Morocco
| | - Abdallah Naya
- Department of Biology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Mounia Oudghiri
- Department of Biology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Mostafa Kabine
- Department of Biology, Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Younes Zaid
- Faculty of Sciences, Department of Biology, Mohammed V University, Rabat, Morocco. .,Research Center of Abulcasis, University of Health Sciences, Rabat, Morocco.
| |
Collapse
|