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Lueschow-Guijosa SR, Stanford AH, Berger JN, Gong H, Boly TJ, Jensen BA, Nordkild P, Leegwater AJ, Wehkamp J, Underwood MA, McElroy SJ. Host defense peptides human β defensin 2 and LL-37 ameliorate murine necrotizing enterocolitis. iScience 2024; 27:109993. [PMID: 38846005 PMCID: PMC11154634 DOI: 10.1016/j.isci.2024.109993] [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: 01/04/2024] [Revised: 03/13/2024] [Accepted: 05/13/2024] [Indexed: 06/09/2024] Open
Abstract
Necrotizing enterocolitis (NEC) is a leading cause of preterm infant morbidity and mortality. Treatment for NEC is limited and non-targeted, which makes new treatment and prevention strategies critical. Host defense peptides (HDPs) are essential components of the innate immune system and have multifactorial mechanisms in host defense. LL-37 and hBD2 are two HDPs that have been shown in prior literature to protect from neonatal sepsis-induced mortality or adult inflammatory bowel disease, respectively. Therefore, this article sought to understand if these two HDPs could influence NEC severity in murine preclinical models. NEC was induced in P14-16 C57Bl/6 mice and HDPs were provided as a pretreatment or treatment. Both LL-37 and hBD2 resulted in decreased NEC injury scores as a treatment and hBD2 as a pretreatment. Our data suggest LL-37 functions through antimicrobial properties, while hBD2 functions through decreases in inflammation and improvement of intestinal barrier integrity.
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Affiliation(s)
| | - Amy H. Stanford
- Department of Pediatrics, University of Iowa, Iowa City, IA 52242, USA
| | - Jennifer N. Berger
- Department of Pediatrics, Children’s Minnesota, Minneapolis, MN 55404, USA
| | - Huiyu Gong
- Department of Pediatrics, University of Iowa, Iowa City, IA 52242, USA
| | - Timothy J. Boly
- Department of Pediatrics, University of Iowa, Iowa City, IA 52242, USA
| | - Benjamin A.H. Jensen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1165 Copenhagen, Denmark
| | | | | | - Jan Wehkamp
- Department of Internal Medicine, University of Tübingen, 72074 Tübingen, Germany
| | - Mark A. Underwood
- Department of Pediatrics, University of California Davis, Sacramento, CA 95616, USA
| | - Steven J. McElroy
- Department of Pediatrics, University of California Davis, Sacramento, CA 95616, USA
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2
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Jiang N, Liu Z, Wang H, Zhang L, Li M, Li G, Li C, Wang B, Zhao C, Liu L. Alterations in metabolome and microbiome: new clues on cathelicidin-related antimicrobial peptide alleviates acute ulcerative colitis. Front Microbiol 2024; 15:1306068. [PMID: 38380090 PMCID: PMC10877057 DOI: 10.3389/fmicb.2024.1306068] [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: 10/04/2023] [Accepted: 01/26/2024] [Indexed: 02/22/2024] Open
Abstract
Ulcerative colitis (UC) is a chronic and recurrent inflammatory disease of the gastrointestinal tract. This study aimed to determine the effect of cathelicidin-related antimicrobial peptide (Cramp) on dextran sulfate sodium (DSS)-induced acute experimental colitis in mice and to investigate the underlying mechanisms. Acute UC was induced in C57BL/6 mice with 3% DSS for 7 days, 4 mg/kg b.w. synthetic Cramp peptide was administrated once daily starting on day 4 of the experimental period. Mice were evaluated for body weight, colon length, colon histopathology, and inflammatory cytokines in colon tissue. Using 16 s rRNA sequencing, the composition structure of gut microbiota was characterized. Metabolomic profiling of the serum was performed. The results showed that DSS treatment significantly induced intestinal damage as reflected by disease activity index, histopathological features, and colon length, while Cramp treatment significantly prevented these trends. Meanwhile, Cramp treatment decreased the levels of inflammatory cytokines in both serum and colonic tissue on DSS-induced colitis. It was also observed that DSS damaged the integrity of the intestinal epithelial barrier, whereas Cramp also played a protective role by attenuating these deteriorated effects. Furthermore, Cramp treatment reversed the oxidative stress by increasing the antioxidant enzymes of GSH-PX and decreasing the oxidant content of MDA. Notably, compared to the DSS group, Cramp treatment significantly elevated the abundance of Verrucomicrobiota at the phylum level. Furthermore, at the genus level, Parasutterella and Mucispirllum abundance was increased significantly in response to Cramp treatment, although Roseburia and Enterorhabdus reduced remarkably. Metabolic pathway analysis of serum metabolomics showed that Cramp intervention can regulate various metabolic pathways such as α-linolenic acid, taurine and hypotaurine, sphingolipid, and arachidonic acid metabolism. The study concluded that Cramp significantly ameliorated DSS-induced colonic injury, colonic inflammation, and intestinal barrier dysfunction in mice. The underlying mechanism is closely related to the metabolic alterations derived from gut microbiota.
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Affiliation(s)
- Nan Jiang
- Department of Trauma Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zhongyuan Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Haiyang Wang
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Lichun Zhang
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Mengjiao Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Gaoqian Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Chang Li
- Department of Trauma Center and Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Jilin, China
| | - Bo Wang
- Department of Trauma Center and Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Jilin, China
| | - Cuiqing Zhao
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
| | - Liming Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, Jilin, China
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3
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Bu Y, Liu Y, Zhang T, Liu Y, Zhang Z, Yi H. Bacteriocin-Producing Lactiplantibacillus plantarum YRL45 Enhances Intestinal Immunity and Regulates Gut Microbiota in Mice. Nutrients 2023; 15:3437. [PMID: 37571374 PMCID: PMC10421436 DOI: 10.3390/nu15153437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 07/29/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
Bacteriocins production is one of important beneficial characteristics of probiotics, which has antibacterial property against intestinal pathogens and is helpful for regulating intestinal flora. To investigate the impact of bacteriocin-producing probiotics on gut microecology, bacteriocin-producing Lactiplantibacillus plantarum YRL45 was orally administered to mice. The results revealed that it promoted the release of cytokines and improved the phagocytic activity of peritoneal macrophages to activate the immune regulation system. L. plantarum YRL45 was conducive to maintaining the morphology of colon tissue without inflammation and increasing the ratio of villus height to crypt depth in the ileum. The gene expression levels of Muc2, ZO-1 and JAM-1 were significantly up-regulated in the ileum and colon, and the gene expression of Cramp presented an upward trend with L. plantarum YRL45 intervention. Moreover, L. plantarum YRL45 remarkably enhanced the levels of immunoglobulins sIgA, IgA and IgG in the intestine of mice. The 16S rRNA gene analysis suggested that L. plantarum YRL45 administration up-regulated the relative abundance of the beneficial bacteria Muribaculaceae and Akkermansia, down-regulated the abundance of the pathogenic bacteria Lachnoclostridium, and promoted the production of acetic acid, propionic acid and total short-chain fatty acids (SCFAs) in mice feces. Our findings indicated that L. plantarum YRL45 had the potential to be developed as a novel probiotic to regulate the intestinal barrier by altering gut microbiota to enhance intestinal immunity and ameliorate intestinal flora balance.
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Affiliation(s)
- Yushan Bu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Yisuo Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Tai Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
| | - Yinxue Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
| | - Zhe Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
| | - Huaxi Yi
- College of Food Science and Engineering, Ocean University of China, Qingdao 266000, China; (Y.B.); (Y.L.); (T.Z.); (Y.L.)
- Food Laboratory of Zhongyuan, Luohe 462300, China
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Tian H, Li J, Chen X, Ren Z, Pan X, Huang W, Bhatia M, Pan LL, Sun J. Oral Delivery of Mouse β-Defensin 14 (mBD14)-Producing Lactococcus lactis NZ9000 Attenuates Experimental Colitis in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5185-5194. [PMID: 36943701 DOI: 10.1021/acs.jafc.2c07098] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Antimicrobial peptides (AMPs) play essential roles in maintaining intestinal health and have been suggested as possible therapeutic strategies against inflammatory bowel disease (IBD). However, the instability of AMPs in the process of transmission in vivo limits their application in the treatment of IBD. In this study, we constructed the mBD14-producing Lactococcus lactis NZ9000 (L. lactis/mBD14) to achieve enteric delivery of mBD14 and evaluated its protective effect on dextran sodium sulfate (DSS)-induced colitis. Mice treated with L. lactis/mBD14 exhibited milder symptoms of colitis (P < 0.01). Additionally, L. lactis/mBD14 treatment reversed DSS-induced epithelial dysfunction and reduced the production of pro-inflammatory cytokines in colon (P < 0.01). Mechanistically, L. lactis/mBD14 significantly inhibited NOD-like receptor pyrin domain containing three inflammasome-mediated pro-inflammatory response (P < 0.05) and regulated microbiota homeostasis by promoting the abundance of probiotic bacteria Akkermansia muciniphila and Faecalibacterium prausnitzii and decreasing the pathogenic Escherichia coli (P < 0.01). Taken together, this study demonstrates the protective effect of L. lactis/mBD14 in DSS-induced colitis, and suggests that oral administration of L. lactis/mBD14 may represent a potential therapeutic strategy for IBD.
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Affiliation(s)
- Haizhi Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Jiahong Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Xiaopei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Zhengnan Ren
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Xiaohua Pan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Weining Huang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch 9016, New Zealand
| | - Li-Long Pan
- School of Medicine, Jiangnan University, Wuxi 214126, China
| | - Jia Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214126, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214126, China
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Shih CC, Liao WC, Ke HY, Kuo CW, Tsao CM, Tsai WC, Chiu YL, Huang HC, Wu CC. Antimicrobial peptide cathelicidin LL-37 preserves intestinal barrier and organ function in rats with heat stroke. Biomed Pharmacother 2023; 161:114565. [PMID: 36958193 DOI: 10.1016/j.biopha.2023.114565] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/25/2023] Open
Abstract
Global warming increases the incidence of heat stroke (HS) and HS causes the reduction of visceral blood flow during hyperthermia, leading to intestinal barrier disruption, microbial translocation, systemic inflammation and multiple organ failure. Cathelicidin LL-37 exhibits antimicrobial activities, helps innate immunity within the gut to maintain intestinal homeostasis, and augments intestinal wound healing and barrier function. Thus, we evaluated the effects and possible mechanisms of cathelicidin LL-37 on HS. Wistar rats were placed in a heating-chamber of 42 ̊C to induce HS. Changes in rectal temperature, hemodynamic parameters, and survival rate were measured during the experimental period. Blood samples and ilea were collected to analyze the effects of LL-37 on systemic inflammation, multiple organ dysfunction, and intestinal injury. Furthermore, LS174T and HT-29 cells were used to assess the underlying mechanisms. Our data showed cathelicidin LL-37 ameliorated the damage of intestinal cells induced by HS. Intestinal injury, systemic inflammation, and nitrosative stress (high nitric oxide level) caused by continuous hyperthermia were attenuated in HS rats treated with cathelicidin LL-37, and hence, improved multiple organ dysfunction, coagulopathy, and survival rate. These beneficial effects of cathelicidin LL-37 were attributed to the protection of intestinal goblet cells (by increasing transepithelial resistance, mucin-2 and Nrf2 expression) and the improvement of intestinal barrier function (less cyclooxygenase-2 expression and FITC-dextran translocation). Interestingly, high cathelicidin expression in the ileal samples of inflammatory bowel disease patients was associated with better clinical outcome. These results suggest that cathelicidin LL-37 could prevent heat stress-induced intestinal damage and heat-related illnesses.
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Affiliation(s)
- Chih-Chin Shih
- Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC.
| | - Wei-Chieh Liao
- Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Hung-Yen Ke
- Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Chia-Wen Kuo
- Department of Nephrology, Taichung Armed Forces General Hospital, Taichung, Taiwan, ROC
| | - Cheng-Ming Tsao
- Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming Chiao-Tung University, Taipei, Taiwan, ROC
| | - Wen-Chiuan Tsai
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Yi-Lin Chiu
- Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Hsieh-Chou Huang
- Department of Anesthesiology, Cheng-Hsin General Hospital, Taipei, Taiwan, ROC
| | - Chin-Chen Wu
- Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei, Taiwan, ROC.
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6
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Cao F, Ding Q, Zhuge H, Lai S, Chang K, Le C, Yang G, Valencak TG, Li S, Ren D. Lactobacillus plantarum ZJUIDS14 alleviates non-alcoholic fatty liver disease in mice in association with modulation in the gut microbiota. Front Nutr 2023; 9:1071284. [PMID: 36698477 PMCID: PMC9868733 DOI: 10.3389/fnut.2022.1071284] [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: 10/16/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
This present study was designed to explore the protective role of Lactobacillus plantarum ZJUIDS14 against Non-alcoholic Fatty Liver Disease (NAFLD) in a high-fat-diet (HFD)-induced C57BL/6 mice model. The probiotic (109 CFU/every other day) was administered by oral gavage for 12 weeks. We found that L. plantarum ZJUIDS14 intervention significantly alleviated HFD related hepatic steatosis, liver damage, insulin resistance, and increased hepatic expression of peroxisome proliferator activated receptor α (PPAR-α) while stimulating the activation of AMP-activated protein kinase (AMPK). Furthermore, L. plantarum ZJUIDS14 improved mitochondrial function as reflected by an increase in dynamin related protein 1 (DRP1) and a decrease of proteins associated with oxidative phosphorylation (OXPHOS) after the treatment. Additionally, mice from the L. plantarum ZJUIDS14 group had a restored intestinal flora and homeostasis involving Coprostanoligenes group, Ruminococcaceae UCG-014, Allobaculum, Ruminiclostridium 1, and Roseburia. Meanwhile, these five genera exhibited a significant (negative or positive) association with ileum inflammation mRNA levels and SCFA contents, by Spearman's correlation analysis. In general, our data demonstrated that L. plantarum ZJUIDS14 mitigates hepatic steatosis and liver damage induced by HFD. Specifically, they strengthened the integrity of the intestinal barrier, regulated gut microbiota, and improved mitochondrial function. Our data provide an experimental basis for L. plantarum ZJUIDS14 as a promising candidate to prevent NAFLD.
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Affiliation(s)
- Feiwei Cao
- College of Animal Sciences, Institute of Dairy Science, Zhejiang University, Hangzhou, China,School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qinchao Ding
- College of Animal Sciences, Institute of Dairy Science, Zhejiang University, Hangzhou, China,School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hui Zhuge
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shanglei Lai
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kaixin Chang
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chunyan Le
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Guorong Yang
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Teresa G. Valencak
- College of Animal Sciences, Institute of Dairy Science, Zhejiang University, Hangzhou, China
| | - Songtao Li
- School of Public Health, Zhejiang Chinese Medical University, Hangzhou, China,*Correspondence: Songtao Li,
| | - Daxi Ren
- College of Animal Sciences, Institute of Dairy Science, Zhejiang University, Hangzhou, China,Daxi Ren,
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Cardoso MH, Meneguetti BT, Oliveira-Júnior NG, Macedo MLR, Franco OL. Antimicrobial peptide production in response to gut microbiota imbalance. Peptides 2022; 157:170865. [PMID: 36038014 DOI: 10.1016/j.peptides.2022.170865] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/18/2022]
Abstract
The gut microbiota presents essential functions in the immune response. The gut epithelium acts as a protective barrier and, therefore, can produce several antimicrobial peptides (AMPs) that can act against pathogenic microorganisms, including bacteria. Several factors cause a disturbance in gut microbiota, including the exacerbated and erroneous use of antibiotics. Antibiotic therapy has been closely related to bacterial resistance and is also correlated with undesired side-effects to the host, including the eradication of commensal bacteria. Consequently, this results in gut microbiota imbalance and inflammatory bowel diseases (IBD) development. In this context, AMPs in the gut epithelium play a restructuring role for gut microbiota. Some naturally occurring AMPs are selective for pathogenic bacteria, thus preserving the health microbiota. Therefore, AMPs produced by the host's epithelial cells represent effective molecules in treating gut bacterial infections. Bearing this in mind, this review focused on describing the importance of the host's AMPs in gut microbiota modulation and their role as anti-infective agents against pathogenic bacteria.
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Affiliation(s)
- Marlon H Cardoso
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117900, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF 70790160, Brazil; Laboratório de Purificação de Proteínas e suas Funções Biológicas, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, 79070900 Campo Grande, Mato Grosso do Sul, Brazil.
| | - Beatriz T Meneguetti
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117900, Brazil
| | - Nelson G Oliveira-Júnior
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF 70790160, Brazil
| | - Maria L R Macedo
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, 79070900 Campo Grande, Mato Grosso do Sul, Brazil
| | - Octávio L Franco
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117900, Brazil; Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF 70790160, Brazil.
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Xie Y, Fontenot L, Chupina Estrada A, Nelson B, Wang J, Shih DQ, Ho W, Mattai SA, Rieder F, Jensen DD, Bunnett NW, Koon HW. Elafin Reverses Intestinal Fibrosis by Inhibiting Cathepsin S-Mediated Protease-Activated Receptor 2. Cell Mol Gastroenterol Hepatol 2022; 14:841-876. [PMID: 35840034 PMCID: PMC9425040 DOI: 10.1016/j.jcmgh.2022.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 12/10/2022]
Abstract
BACKGROUND & AIMS More than half of Crohn's disease patients develop intestinal fibrosis-induced intestinal strictures. Elafin is a human protease inhibitor that is down-regulated in the stricturing intestine of Crohn's disease patients. We investigated the efficacy of elafin in reversing intestinal fibrosis and elucidated its mechanism of action. METHODS We developed a new method to mimic a stricturing Crohn's disease environment and induce fibrogenesis using stricturing Crohn's disease patient-derived serum exosomes to condition fresh human intestinal tissues and primary stricturing Crohn's disease patient-derived intestinal fibroblasts. Three mouse models of intestinal fibrosis, including SAMP1/YitFc mice, Salmonella-infected mice, and trinitrobenzene sulfonic acid-treated mice, were also studied. Elafin-Eudragit FS30D formulation and elafin-overexpressing construct and lentivirus were used. RESULTS Elafin reversed collagen synthesis in human intestinal tissues and fibroblasts pretreated with Crohn's disease patient-derived serum exosomes. Proteome arrays identified cathepsin S as a novel fibroblast-derived pro-fibrogenic protease. Elafin directly suppressed cathepsin S activity to inhibit protease-activated receptor 2 activity and Zinc finger E-box-binding homeobox 1 expression, leading to reduced collagen expression in intestinal fibroblasts. Elafin overexpression reversed ileal fibrosis in SAMP1/YitFc mice, cecal fibrosis in Salmonella-infected mice, and colonic fibrosis in trinitrobenzene sulfonic acid-treated mice. Cathepsin S, protease-activated receptor 2 agonist, and zinc finger E-box-binding homeobox 1 overexpression abolished the anti-fibrogenic effect of elafin in fibroblasts and all 3 mouse models of intestinal fibrosis. Oral elafin-Eudragit FS30D treatment abolished colonic fibrosis in trinitrobenzene sulfonic acid-treated mice. CONCLUSIONS Elafin suppresses collagen synthesis in intestinal fibroblasts via cathepsin S-dependent protease-activated receptor 2 inhibition and decreases zinc finger E-box-binding homeobox 1 expression. The reduced collagen synthesis leads to the reversal of intestinal fibrosis. Thus, modified elafin may be a therapeutic approach for intestinal fibrosis.
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Affiliation(s)
- Ying Xie
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California,Department of Gastroenterology, The First Hospital of China Medical University, Shenyang City, Liaoning Province, China
| | - Lindsey Fontenot
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California
| | - Andrea Chupina Estrada
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California
| | - Becca Nelson
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California
| | - Jiani Wang
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California,Department of Gastroenterology, The First Hospital of China Medical University, Shenyang City, Liaoning Province, China
| | - David Q. Shih
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Wendy Ho
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California
| | - S. Anjani Mattai
- Department of Medicine, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California
| | - Florian Rieder
- Department of Gastroenterology, Hepatology, and Nutrition, Digestive Diseases and Surgery Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Dane D. Jensen
- Bluestone Center for Clinical Research, New York University College of Dentistry, New York, New York
| | - Nigel W. Bunnett
- Department of Molecular Pathobiology, Department of Neuroscience and Physiology, Neuroscience Institute, New York University, New York, New York
| | - Hon Wai Koon
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California.
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Bhusal A, Nam Y, Seo D, Rahman MH, Hwang EM, Kim S, Lee W, Suk K. Cathelicidin‐related antimicrobial peptide promotes neuroinflammation through astrocyte–microglia communication in experimental autoimmune encephalomyelitis. Glia 2022; 70:1902-1926. [DOI: 10.1002/glia.24227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 05/10/2022] [Accepted: 05/25/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Anup Bhusal
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Youngpyo Nam
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Donggun Seo
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
| | - Md Habibur Rahman
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- Division of Endocrinology, Department of Medicine Rutgers Robert Wood Johnson Medical School New Brunswick New Jersey USA
| | - Eun Mi Hwang
- Brain Science Institute, Korea Institute of Science and Technology Seoul Republic of Korea
| | - Seung‐Chan Kim
- Brain Science Institute, Korea Institute of Science and Technology Seoul Republic of Korea
| | - Won‐Ha Lee
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group Kyungpook National University Daegu Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, School of Medicine Kyungpook National University Daegu Republic of Korea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, School of Medicine Kyungpook National University Daegu Republic of Korea
- Brain Science and Engineering Institute Kyungpook National University Daegu Republic of Korea
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10
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Shannon AH, Adelman SA, Hisey EA, Potnis SS, Rozo V, Yung MW, Li JY, Murphy CJ, Thomasy SM, Leonard BC. Antimicrobial Peptide Expression at the Ocular Surface and Their Therapeutic Use in the Treatment of Microbial Keratitis. Front Microbiol 2022; 13:857735. [PMID: 35722307 PMCID: PMC9201425 DOI: 10.3389/fmicb.2022.857735] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 05/12/2022] [Indexed: 11/29/2022] Open
Abstract
Microbial keratitis is a common cause of ocular pain and visual impairment worldwide. The ocular surface has a relatively paucicellular microbial community, mostly found in the conjunctiva, while the cornea would be considered relatively sterile. However, in patients with microbial keratitis, the cornea can be infected with multiple pathogens including Staphylococcus aureus, Pseudomonas aeruginosa, and Fusarium sp. Treatment with topical antimicrobials serves as the standard of care for microbial keratitis, however, due to high rates of pathogen resistance to current antimicrobial medications, alternative therapeutic strategies must be developed. Multiple studies have characterized the expression and activity of antimicrobial peptides (AMPs), endogenous peptides with key antimicrobial and wound healing properties, on the ocular surface. Recent studies and clinical trials provide promise for the use of AMPs as therapeutic agents. This article reviews the repertoire of AMPs expressed at the ocular surface, how expression of these AMPs can be modulated, and the potential for harnessing the AMPs as potential therapeutics for patients with microbial keratitis.
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Affiliation(s)
- Allison H. Shannon
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Sara A. Adelman
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Erin A. Hisey
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Sanskruti S. Potnis
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Vanessa Rozo
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Madeline W. Yung
- Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Jennifer Y. Li
- Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Christopher J. Murphy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
- Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Sara M. Thomasy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
- Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, Davis, CA, United States
| | - Brian C. Leonard
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
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11
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Overview of signal transduction between LL37 and bone marrow-derived MSCs. J Mol Histol 2022; 53:149-157. [DOI: 10.1007/s10735-021-10048-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/06/2021] [Indexed: 12/27/2022]
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12
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Wang L, Zhang N, Han D, Su P, Chen B, Zhao W, Liu Y, Zhang H, Hu G, Yang Q. MTDH Promotes Intestinal Inflammation by Positively Regulating TLR Signalling. J Crohns Colitis 2021; 15:2103-2117. [PMID: 33987665 DOI: 10.1093/ecco-jcc/jjab086] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Macrophages in the intestinal mucosa can rapidly engage Toll-like receptor [TLR]-mediated inflammatory responses to protect against pathogen invasion, but these same innate immune responses can also drive the induction of colitis. Our previous research revealed that metadherin [MTDH] is overexpressed in multiple cancers and plays vital roles in tumour progression. However, the role of MTDH in intestinal inflammation is largely unknown. In this study, we found the MTDH expression in colonic lamina propria [CLP] macrophages was positively correlated with inflammatory colitis severity. MTDH-/- mice were protected against the symptoms of dextran sodium sulphate [DSS]-induced colitis; however, adoptive transfer of MTDH wild-type [WT] monocytes partially restored the susceptibility of MTDH-/- mice to DSS-induced colitis. TLR stimulation was sufficient to induce the expression of MTDH, whereas the absence of MTDH was sufficient to suppress TLR-induced production of inflammatory cytokines by macrophages. From a mechanistic perspective, MTDH recruited TRAF6 to TAK1, leading to TRAF6-mediated TAK1 K63 ubiquitination and phosphorylation, ultimately facilitating TLR-induced NF-κB and MAPK signalling. Taken together, our results indicate that MTDH contributes to colitis development by promoting TLR-induced pro-inflammatory cytokine production in CLP macrophages and might represent a potential therapeutic approach for intestine inflammation intervention.
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Affiliation(s)
- Lijuan Wang
- Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Ning Zhang
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Dianwen Han
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Peng Su
- Department of Pathology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Bing Chen
- Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Wenjing Zhao
- Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Ying Liu
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Hanwen Zhang
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China
| | - Guohong Hu
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Shanghai, China
| | - Qifeng Yang
- Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China.,Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Ji'nan, Shandong, China.,Research Institute of Breast Cancer, Shandong University, Ji'nan, Shandong, China
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13
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Gubatan J, Holman DR, Puntasecca CJ, Polevoi D, Rubin SJS, Rogalla S. Antimicrobial peptides and the gut microbiome in inflammatory bowel disease. World J Gastroenterol 2021; 27:7402-7422. [PMID: 34887639 PMCID: PMC8613745 DOI: 10.3748/wjg.v27.i43.7402] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/13/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023] Open
Abstract
Antimicrobial peptides (AMP) are highly diverse and dynamic molecules that are expressed by specific intestinal epithelial cells, Paneth cells, as well as immune cells in the gastrointestinal (GI) tract. They play critical roles in maintaining tolerance to gut microbiota and protecting against enteric infections. Given that disruptions in tolerance to commensal microbiota and loss of barrier function play major roles in the pathogenesis of inflammatory bowel disease (IBD) and converge on the function of AMP, the significance of AMP as potential biomarkers and novel therapeutic targets in IBD have been increasingly recognized in recent years. In this frontier article, we discuss the function and mechanisms of AMP in the GI tract, examine the interaction of AMP with the gut microbiome, explore the role of AMP in the pathogenesis of IBD, and review translational applications of AMP in patients with IBD.
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Affiliation(s)
- John Gubatan
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Redwood City, CA 94063, United States
| | - Derek R Holman
- Department of Radiology, Molecular Imaging Program at Stanford , Stanford University, Stanford , CA 94305, United States
| | | | - Danielle Polevoi
- Stanford University School of Medicine, Stanford University, Stanford, CA 94063, United States
| | - Samuel JS Rubin
- Stanford University School of Medicine, Stanford University, Stanford, CA 94063, United States
| | - Stephan Rogalla
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Redwood City, CA 94063, United States
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14
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Li J, Yu S, Pan X, Zhang M, Lv Z, Pan LL, Sun J. Recombinant CRAMP-producing Lactococcus lactis attenuates dextran sulfate sodium-induced colitis by colonic colonization and inhibiting p38/NF-κB signaling. Food Nutr Res 2021; 65:5570. [PMID: 34650393 PMCID: PMC8494263 DOI: 10.29219/fnr.v65.5570] [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: 09/16/2020] [Revised: 01/05/2021] [Accepted: 01/28/2021] [Indexed: 11/23/2022] Open
Abstract
Background Inflammatory bowel diseases (IBDs) are generally characterized by persistent abdominal pain and diarrhea caused by chronic inflammation in the intestine. Cathelicidins are antimicrobial peptides with pleiotropic roles in anti-infection, wound healing, and immune modulation. However, the sensitivity to the acidic environment and short half-life of cathelicidins limit their application in IBD treatment. Recombinant cathelicidin-related antimicrobial peptide (CRAMP)-producing Lactococcus lactis may represent a potential approach for IBD therapy. Objective The aim of this study was to develop recombinant CRAMP-producing L. lactis NZ9000 and explore the role and mechanism of recombinant L. lactis NZ9000 expressing CRAMP in colitis. Design We constructed two strains of CRAMP-producing L. lactis NZ9000 with different plasmids pMG36e (L.L-pMU45CR) or pNZ8148 (L.L-pNU45CR), which use a Usp45 secretion signal to drive the secretion of CRAMP. Bacterial suspensions were orally supplemented to mice with a syringe for 4 days after dextran sodium sulfate (DSS) treatment. Body weight change, disease active score, colon length, and colonic histology were determined. The expression of tight junction (ZO-1, ZO-2, and Occludin) and cytokines (IL-6, IL-1β, TNF-α, and IL-10) in colon was performed by qPCR. The expression of p-ERK, p-p38, and p-p65 was determined by Western blot analysis. Results Both CRAMP-producing L. lactis NZ9000 strains protected against colitis, as shown by reduced weight loss and disease activity score, improved colon shortening, and histopathological injury. In addition, CRAMP-producing L. lactis NZ9000 restored gut barrier by upregulating ZO-1, ZO-2, and occludin. Moreover, CRAMP-producing L. lactis NZ9000 regulated the colonic cytokines profile with reduced IL-6, IL-1β, and TNF-α production, and increased IL-10 production. By further analysis, we found that CRAMP-producing L. lactis NZ9000 reduced the expression of p-p38 and p-p65. Conclusions Together, our data suggested that CRAMP-secreting L. lactis NZ9000 attenuated dextran sulfate sodium-induced colitis by colonic colonization and inhibiting p38/NF-κB signaling. Orally administered recombinant CRAMP-secreting L. lactis NZ9000 represents a potential strategy for colitis therapy.
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Affiliation(s)
- Jiahong Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Shiwen Yu
- Department of Obstetrics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, P. R. China
| | - Xiaohua Pan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Ming Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Zhuwu Lv
- Department of Obstetrics, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, P. R. China
| | - Li-Long Pan
- Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, P. R. China
| | - Jia Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, P. R. China
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15
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Li Y, Ma X, Yang J, Wu X, Yan Z, He B. Expression Pattern of Cathelicidins in Dairy Cows During Endometritis and Role of Bovine Endometrial Epithelial Cells in Production of Cathelicidins. Front Vet Sci 2021; 8:675669. [PMID: 34616790 PMCID: PMC8489660 DOI: 10.3389/fvets.2021.675669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 08/16/2021] [Indexed: 11/13/2022] Open
Abstract
Endometritis is a common bacterial disease of dairy cows. Cathelicidins are host-defense peptides that play important roles in clearance of bacteria. However, the expression pattern of these peptides during endometritis is still unclear. We hypothesize that the levels of bovine cathelicidins increased during endometritis. This study was to investigate the changes of bovine cathelicidins during endometritis. Forty-four post-partum cows (28–35 days after calving) involved in this study were grouped according to the character of vaginal discharge (VD) into three groups. These were (1) cows with clear fluid (n = 8, healthy cows group, N); (2) cows with VD containing <50% off-white mucopurulent material (n = 20, moderate endometritis cows, M); (3) cows with VD containing > 50% yellow or white purulent material (n = 16, severe endometritis cows, S). The blood, VD, and endometrial biopsies samples were collected from each cow to assess the levels of cathelicidin 1–7. Furthermore, bovine endometrial epithelial cells (BEECs) were stimulated with different concentration of Escherichia coli (2 × 106 and 2 × 107 CFU/mL) to detect the cellular source of cathelicidins. Quantitative real-time PCR (RT-qPCR) was used to detect the relative mRNA expression of cathelicidins, and enzyme-linked immune sorbent assay (ELISA) method were used to measure the protein levels. The mRNA and protein levels of cathelicidin 1–7 significantly increased during bovine endometritis (both moderate and severe endometritis), while samples from severe cases showed lower levels of cathelicidins compared to moderate cases. BEECs can express cathelicidin 1–7, and E. coli triggered the release of these proteins. High concentration of E. coli decreased the mRNA and protein levels of cathelicidins. Taken together, our results supported that cathelicidins are released as host defense molecules against the bacteria during bovine endometritis, and BEECs play an active role in expression and production of cathelicidins.
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Affiliation(s)
- Yajuan Li
- College of Animal Science and Technology, Guangxi University, Nanning, China.,Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaoyu Ma
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Jie Yang
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiaohu Wu
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zuoting Yan
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Baoxiang He
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, China
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16
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Pang B, Jin H, Liao N, Li J, Jiang C, Shao D, Shi J. Lactobacillus rhamnosus from human breast milk ameliorates ulcerative colitis in mice via gut microbiota modulation. Food Funct 2021; 12:5171-5186. [PMID: 33977948 DOI: 10.1039/d0fo03479g] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Gut microbiota imbalance is one of the major causes of ulcerative colitis (UC). L. rhamnosus SHA113 (LRS), a strain isolated from healthy human milk, influences the regulation of gut flora. This study aims to determine whether this strain can ameliorate UC by modulating gut microbiota. Mouse models of UC were established using C57BL/6Cnc mice with intragastric administration of 3.0% (w/v) dextran sodium sulfate (DSS). LRS was used to treat the mouse models of UC with 109 cfu mL-1 cell suspension via intragastric administration. To verify the effect of gut microbiota on UC, fecal microbiota collected from the mice after the treatment with LRS were also used to treat the UC mouse models (FMT). The severity of UC was evaluated based on body weight, colon length, disease activity index (DAI), and hematoxylin-eosin staining. The microbial composition was analyzed by 16S rRNA sequencing. The mRNA expression levels of cytokines, mucins, tight junction proteins, and antimicrobial peptides in the gastrointestinal tract were detected by quantitative real-time polymerase chain reaction. The short-chain fatty acid (SCFAs) in the cecal contents of all mice were quantitatively detected by gas chromatography and mass spectrometry. Both LRS and FMT exerted excellent therapeutic effects on UC, as evidenced by the reduction in body weight loss, colon length, and colon structural integrity, as well as the increase in the DAI (disease activity index). LRS and FMT treatments showed similar effects: (1) an increase of total SCFA production in the cecal contents and the abundance of gut microbial diversity and flora composition; (2) decreases in two genera (Parabacteroides and Escherichia/Shigella) related to the DAI and the enhancement of SCFAs and IL-10 positively related genera in the gut microbiota (Bilophila, Roseburia, Akkermansia, and Bifidobacterium); (3) downregulation of the expression of tumor necrosis factor-α, interleukin IL-6, and IL-1β, and upregulation of the expression of the anti-inflammatory cytokine IL-10; and (4) upregulation of the expression of mucins (Muc1-4) and tight junction protein ZO-1. Overall, L. rhamnosus SHA113 relieves UC via the regulation of gut microbiota: increases in SCFA-producing genera and decreases in UC-related genera. In addition, a single strain is sufficient to induce a significant change in the gut microbiota and exert therapeutic effects on UC.
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Affiliation(s)
- Bing Pang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Han Jin
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Ning Liao
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Junjun Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Chunmei Jiang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Dongyan Shao
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shaanxi Province 710072, China. NingLiao
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17
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Zhang W, Michalowski CB, Beloqui A. Oral Delivery of Biologics in Inflammatory Bowel Disease Treatment. Front Bioeng Biotechnol 2021; 9:675194. [PMID: 34150733 PMCID: PMC8209478 DOI: 10.3389/fbioe.2021.675194] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/19/2021] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) has been posed as a great worldwide health threat. Having an onset during early adulthood, IBD is a chronic inflammatory disease characterized by remission and relapse. Due to its enigmatic etiology, no cure has been developed at the moment. Conventionally, steroids, 5-aminosalicylic acid, and immunosuppressants have been applied clinically to relieve patients’ syndrome which, unfavorably, causes severe adverse drug reactions including diarrhea, anemia, and glaucoma. Insufficient therapeutic effects also loom, and surgical resection is mandatory in half of the patients within 10 years after diagnosis. Biologics demonstrated unique and differentiative therapeutic mechanism which can alleviate the inflammation more effectively. However, their application in IBD has been hindered considering their stability and toxicity. Scientists have brought up with the concept of nanomedicine to achieve the targeted drug delivery of biologics for IBD. Here, we provide an overview of biologics for IBD treatment and we review existing formulation strategies for different biological categories including antibodies, gene therapy, and peptides. This review highlights the current trends in oral delivery of biologics with an emphasis on the important role of nanomedicine in the development of reliable methods for biologic delivery in IBD treatment.
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Affiliation(s)
- Wunan Zhang
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Cecilia Bohns Michalowski
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ana Beloqui
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, Brussels, Belgium
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18
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Chen K, Yoshimura T, Gong W, Tian C, Huang J, Trinchieri G, Wang JM. Requirement of CRAMP for mouse macrophages to eliminate phagocytosed E. coli through an autophagy pathway. J Cell Sci 2021; 134:jcs252148. [PMID: 33468624 PMCID: PMC7970306 DOI: 10.1242/jcs.252148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 12/30/2020] [Indexed: 01/19/2023] Open
Abstract
Host-derived antimicrobial peptides play an important role in the defense against extracellular bacterial infections. However, the capacity of antimicrobial peptides derived from macrophages as potential antibacterial effectors against intracellular pathogens remains unknown. In this study, we report that normal (wild-type, WT) mouse macrophages increased their expression of cathelin-related antimicrobial peptide (CRAMP, encoded by Camp) after infection by viable E. coli or stimulation with inactivated E. coli and its product lipopolysaccharide (LPS), a process involving activation of NF-κB followed by protease-dependent conversion of CRAMP from an inactive precursor to an active form. The active CRAMP was required by WT macrophages for elimination of phagocytosed E. coli, with participation of autophagy-related proteins ATG5, LC3-II and LAMP-1, as well as for aggregation of the bacteria with p62 (also known as SQSTM1). This process was impaired in CRAMP-/- macrophages, resulting in retention of intracellular bacteria and fragmentation of macrophages. These results indicate that CRAMP is a critical component in autophagy-mediated clearance of intracellular E. coli by mouse macrophages.
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Affiliation(s)
- Keqiang Chen
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Teizo Yoshimura
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Wanghua Gong
- Basic Research Program, Leidos Biomedical Research, Inc., Frederick, MD 21702, USA
| | - Cuimeng Tian
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
- Beijing Tuberculosis and Thoracic Tumor Research Institute/Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Jiaqiang Huang
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
- College of Life Sciences, Beijing Jiaotong University, Beijing 100044, China
| | - Giorgio Trinchieri
- Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Ji Ming Wang
- Laboratory of Cancer ImmunoMetabolism, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
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19
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Krawiec P, Pac-Kożuchowska E. Cathelicidin - A Novel Potential Marker of Pediatric Inflammatory Bowel Disease. J Inflamm Res 2021; 14:163-174. [PMID: 33519224 PMCID: PMC7837565 DOI: 10.2147/jir.s288742] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction Cathelicidin is a multifunctional host defense peptide which may also exert pro-inflammatory signals and contribute to the development of autoimmune disorders. We aimed to assess serum concentration of cathelicidin in children with inflammatory bowel disease (IBD) compared to healthy controls and to evaluate its relationship with disease activity and phenotype. Patients and Methods The study group included 68 children with IBD. The control group comprised 20 children with functional abdominal pain. All patients and controls were tested for complete blood count, C-reactive protein, erythrocyte sedimentation rate and cathelicidin. Stool samples were collected to assess calprotectin. Results Cathelicidin was significantly increased in patients with ulcerative colitis (1073.39±214.52 ng/mL) and Crohn’s disease (1057.63±176.03 ng/mL) patients compared to controls (890.56±129.37 ng/mL) (H=16.28; p=0.0003). Cathelicidin was significantly elevated in children with active IBD (1044.90±176.17 ng/mL) and IBD remission (1098.10±227.87 ng/mL) compared to controls (Z=3.21; p=0.001; Z=−4.12; p<0.0001, respectively). Negative correlation between cathelicidin and calprotectin in children with ulcerative colitis was found (R=−0.39; p=0.02). Cathelicidin exhibited AUC of 0.815 for differentiation children with ulcerative colitis from the control group. Conclusion Serum cathelicidin is increased in children with Crohn’s disease and ulcerative colitis regardless of clinical activity of the disease suggesting that it may be a potential biomarker of IBD. Inverse correlation between cathelicidin and fecal calprotectin may imply a disparate role of these molecules in the pathophysiology of pediatric ulcerative colitis.
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Affiliation(s)
- Paulina Krawiec
- Department of Pediatrics and Gastroenterology, Medical University of Lublin, Lublin, Poland
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20
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Chatterton DEW, Aagaard S, Hesselballe Hansen T, Nguyen DN, De Gobba C, Lametsch R, Sangild PT. Bioactive proteins in bovine colostrum and effects of heating, drying and irradiation. Food Funct 2021; 11:2309-2327. [PMID: 32108849 DOI: 10.1039/c9fo02998b] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bovine colostrum (BC) contains bioactive proteins, such as immunoglobulin G (IgG), lactoferrin (LF) and lactoperoxidase (LP). BC was subjected to low-temperature, long-time pasteurization (LTLT, 63 °C, 30 min) or high-temperature, short-time pasteurization (HTST, 72 °C, 15 s) and spray-drying (SD), with or without γ-irradiation (GI, ∼14 kGy) to remove microbial contamination. Relative to unpasteurized liquid BC, SD plus GI increased protein denaturation by 6 and 11%, respectively, increasing to 19 and 27% after LTLT and to 48% after HTST, with no further effects after GI (all P < 0.05). LTLT, without or with GI, resulted in 15 or 29% denaturation of IgG, compared with non-pasteurized BC, and 34 or 58% for HTST treatment (all P < 0.05, except LTLT without GI). For IgG, only GI, not SD or LTLT, increased denaturation (30-38%, P < 0.05) but HTST increased denaturation to 40%, with further increases after GI (60%, P < 0.05). LTLT and HTST reduced LP levels (56 and 81% respectively) and LTLT reduced LF levels (21%), especially together with GI (47%, P < 0.05). Denaturation of BSA, β-LgA, β-LgB and α-La were similar to IgG. Methionine, a protective amino acid against free oxygen radicals, was oxidised by LTLT + GI (P < 0.05) while LTLT and HTST had no effect. Many anti-inflammatory proteins, including serpin anti-proteinases were highly sensitive to HTST and GI but preserved after LTLT pasteurization. LTLT, followed by SD is an optimal processing technique preserving bioactive proteins when powdered BC is used as a diet supplement for sensitive patients.
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Affiliation(s)
| | - Sasha Aagaard
- Department of Food Science, University of Copenhagen, DK-1958, Denmark. and Comparative Pediatrics and Nutrition, Department of Veterinary Clinical and Animal Sciences, Denmark
| | | | - Duc Ninh Nguyen
- Comparative Pediatrics and Nutrition, Department of Veterinary Clinical and Animal Sciences, Denmark
| | - Cristian De Gobba
- Department of Food Science, University of Copenhagen, DK-1958, Denmark.
| | - René Lametsch
- Department of Food Science, University of Copenhagen, DK-1958, Denmark.
| | - Per T Sangild
- Comparative Pediatrics and Nutrition, Department of Veterinary Clinical and Animal Sciences, Denmark
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21
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Fabisiak N, Fabisiak A, Chmielowiec-Korzeniowska A, Tymczyna L, Kamysz W, Kordek R, Bauer M, Kamysz E, Fichna J. Anti-inflammatory and antibacterial effects of human cathelicidin active fragment KR-12 in the mouse models of colitis: a novel potential therapy of inflammatory bowel diseases. Pharmacol Rep 2020; 73:163-171. [PMID: 33219923 PMCID: PMC7862075 DOI: 10.1007/s43440-020-00190-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/31/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022]
Abstract
Introduction Inflammatory bowel diseases (IBD) are a group of chronic gastrointestinal tract disorders with complex etiology, with intestinal dysbiosis as the most prominent factor. In this study, we assessed the anti-inflammatory and antibacterial actions of the human cathelicidin LL-37 and its shortest active fragment, KR-12 in the mouse models of colitis. Materials and methods Mouse models of colitis induced by 2,4,6-trinitrobenzenesulfonic acid (TNBS) and dextran sulfate sodium (DSS) were used in the study. The extent of inflammation was evaluated based on the macro- and microscopic scores, quantification of myeloperoxidase (MPO) activity and microbiological analysis of stool samples. Results A preliminary study with LL-37 and KR-12 (1 mg/kg, ip, twice daily) showed a decrease in macroscopic and ulcer scores in the acute TNBS-induced model of colitis. We observed that KR-12 (5 mg/kg, ip, twice daily) reduced microscopic and ulcer scores in the semi-chronic and chronic TNBS-induced models of colitis compared with inflamed mice. Furthermore, qualitative and quantitative changes in colonic microbiota were observed: KR-12 (5 mg/kg, ip, twice daily) decreased the overall number of bacteria, Escherichia coli and coli group bacteria. In the semi-chronic DSS-induced model, KR-12 attenuated intestinal inflammation as demonstrated by a reduction in macroscopic score and colon damage score and MPO activity. Conclusions We demonstrated that KR-12 alleviates inflammation in four different mouse models of colitis what suggests KR-12 and cathelicidins as a whole are worth being considered as a potential therapeutic option in the treatment of IBD.
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Affiliation(s)
- Natalia Fabisiak
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland
- Department of Gastroenterology, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Adam Fabisiak
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland
- Department of Digestive Tract Diseases, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | | | - Leszek Tymczyna
- Department of Animal Hygiene and Environment, University of Agriculture in Lublin, Lublin, Poland
| | - Wojciech Kamysz
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
| | - Radzisław Kordek
- Department of Pathology, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Marta Bauer
- Department of Inorganic Chemistry, Faculty of Pharmacy, Medical University of Gdansk, Gdansk, Poland
| | - Elżbieta Kamysz
- Department of Molecular Biotechnology, Faculty of Chemistry, University of Gdansk, Gdansk, Poland
| | - Jakub Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215, Lodz, Poland.
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22
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Bescucci DM, Clarke ST, Brown CLJ, Boras VF, Montina T, Uwiera RRE, Inglis GD. The absence of murine cathelicidin-related antimicrobial peptide impacts host responses enhancing Salmonella enterica serovar Typhimurium infection. Gut Pathog 2020; 12:53. [PMID: 33292444 PMCID: PMC7666523 DOI: 10.1186/s13099-020-00386-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 10/03/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Cathelicidins are a class of antimicrobial peptide, and the murine cathelicidin-related antimicrobial peptide (mCRAMP) has been demonstrated in vitro to impair Salmonella enterica serovar Typhimurium proliferation. However, the impact of mCRAMP on host responses and the microbiota following S. Typhimurium infection has not been determined. In this study mCRAMP-/- and mCRAMP+/+ mice (± streptomycin) were orally inoculated with S. enterica serovar Typhimurium DT104 (SA +), and impacts on the host and enteric bacterial communities were temporally evaluated. RESULTS Higher densities of the pathogen were observed in cecal digesta and associated with mucosa in SA+/mCRAMP-/- mice that were pretreated (ST+) and not pretreated (ST-) with streptomycin at 24 h post-inoculation (hpi). Both SA+/ST+/mCRAMP-/- and SA+/ST-/mCRAMP-/- mice were more susceptible to infection exhibiting greater histopathologic changes (e.g. epithelial injury, leukocyte infiltration, goblet cell loss) at 48 hpi. Correspondingly, immune responses in SA+/ST+/mCRAMP-/- and SA+/ST-/mCRAMP-/- mice were affected (e.g. Ifnγ, Kc, Inos, Il1β, RegIIIγ). Systemic dissemination of the pathogen was characterized by metabolomics, and the liver metabolome was affected to a greater degree in SA+/ST+/mCRAMP-/- and SA+/ST-/mCRAMP-/- mice (e.g. taurine, cadaverine). Treatment-specific changes to the structure of the enteric microbiota were associated with infection and mCRAMP deficiency, with a higher abundance of Enterobacteriaceae and Veillonellaceae observed in infected null mice. The microbiota of mice that were administered the antibiotic and infected with Salmonella was dominated by Proteobacteria. CONCLUSION The study findings showed that the absence of mCRAMP modulated both host responses and the enteric microbiota enhancing local and systemic infection by Salmonella Typhimurium.
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Affiliation(s)
- Danisa M Bescucci
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.,Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Sandra T Clarke
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.,Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Catherine L J Brown
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.,Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada
| | - Valerie F Boras
- Chinook Regional Hospital, Alberta Health Services, Lethbridge, AB, Canada
| | - Tony Montina
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, AB, Canada.,Southern Alberta Genome Sciences Centre, University of Lethbridge, Lethbridge, AB, Canada
| | - Richard R E Uwiera
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - G Douglas Inglis
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.
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23
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Holani R, Babbar A, Blyth GAD, Lopes F, Jijon H, McKay DM, Hollenberg MD, Cobo ER. Cathelicidin-mediated lipopolysaccharide signaling via intracellular TLR4 in colonic epithelial cells evokes CXCL8 production. Gut Microbes 2020; 12:1785802. [PMID: 32658599 PMCID: PMC7524372 DOI: 10.1080/19490976.2020.1785802] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We hypothesized that the antimicrobial peptide cathelicidin has a physiological role in regulating gut inflammatory homeostasis. We determined that cathelicidin synergizes with LPS to facilitate its internalization and signaling via endosomic TLR4 in colonic epithelium, evoking synthesis of the human neutrophil chemoattractant, CXCL8 (or murine homolog, CXCL1). Interaction of cathelicidin with LPS in the control of CXCL8/CXCL1 synthesis was assessed in human colon epithelial cells, murine colonoids and cathelicidin-null mice (Camp-/- ). Mechanistically, human cathelicidin (LL-37), as an extracellular complex with LPS, interacted with lipid raft-associated GM1 gangliosides to internalize and activate intracellular TLR4. Two signaling pathways converged on CXCL8/CXCL1 production: (1) a p38MAPK-dependent pathway regulated by Src-EGFR kinases; and, (2) a p38MAPK-independent, NF-κB-dependent pathway, regulated by MEK1/2-MAPK. Increased cathelicidin-dependent CXCL8 secretion in the colonic mucosa activated human blood-derived neutrophils. These cathelicidin effects occurred in vitro at concentrations well below those needed for microbicidal function. The important immunomodulatory role of cathelicidins was evident in cathelicidin-null/Camp-/- mice, which had diminished colonic CXCL1 secretion, decreased neutrophil recruitment-activation and reduced bacterial clearance when challenged with the colitis-inducing murine pathogen, Citrobacter rodentium. We conclude that in addition to its known microbicidal action, cathelicidin has a unique pathogen-sensing role, facilitating LPS-mediated intestinal responses, including the production of CXCL8/CXCL1 that would contribute to an integrated tissue response to recruit neutrophils during colitis.
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Affiliation(s)
- Ravi Holani
- Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Anshu Babbar
- Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Graham A. D. Blyth
- Microbiology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Fernando Lopes
- Institute of Parasitology, McGill University, Montreal, Canada
| | - Humberto Jijon
- Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Derek M. McKay
- Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Morley D. Hollenberg
- Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Eduardo R. Cobo
- Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada,CONTACT Eduardo R. Cobo Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, ABT2N 4N1, Canada
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24
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Gubatan J, Mehigan GA, Villegas F, Mitsuhashi S, Longhi MS, Malvar G, Csizmadia E, Robson S, Moss AC. Cathelicidin Mediates a Protective Role of Vitamin D in Ulcerative Colitis and Human Colonic Epithelial Cells. Inflamm Bowel Dis 2020; 26:885-897. [PMID: 31955203 PMCID: PMC7216768 DOI: 10.1093/ibd/izz330] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Vitamin D plays a protective role in ulcerative colitis (UC) patients through unclear mechanisms. Cathelicidin is an antimicrobial peptide induced by 1,25(OH)D2. Our goal was to evaluate the link between cathelicidin and vitamin D-associated clinical outcomes in UC patients, explore vitamin D induction of cathelicidin in human colon cells, and evaluate the effects of intrarectal human cathelicidin on a murine model of colitis. METHODS Serum and colonic cathelicidin levels were measured in UC patients and correlated with clinical and histologic outcomes. Human colon cells were treated with 1,25(OH)2D and production of cathelicidin and cytokines were quantified. Antimicrobial activity against Escherichia coli from cell culture supernatants was measured. Mice were treated with intrarectal cathelicidin, and its effects on DSS colitis and intestinal microbiota were evaluated. RESULTS In UC patients, serum 25(OH)D positively correlated with serum and colonic cathelicidin. Higher serum cathelicidin is associated with decreased risk of histologic inflammation and clinical relapse but not independent of 25(OH)D or baseline inflammation. The 1,25(OH)2D treatment of colon cells induced cathelicidin and IL-10, repressed TNF-α, and suppressed Escherichia coli growth. This antimicrobial effect was attenuated with siRNA-cathelicidin transfection. Intrarectal cathelicidin reduced the severity of DSS colitis but did not mitigate the impact of colitis on microbial composition. CONCLUSIONS Cathelicidin plays a protective role in 25(OH)D-associated UC histologic outcomes and murine colitis. Cathelicidin is induced by vitamin D in human colonic epithelial cells and promotes antimicrobial activity against E. coli. Our study provides insights into the vitamin D-cathelicidin pathway as a potential therapeutic target.
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Affiliation(s)
- John Gubatan
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Gillian A Mehigan
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Fernando Villegas
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Shuji Mitsuhashi
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Maria Serena Longhi
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Grace Malvar
- Division of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Eva Csizmadia
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Simon Robson
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Alan C Moss
- Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Address correspondence to: Alan C. Moss, MD, Division of Gastroenterology and Hepatology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA. E-mail:
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25
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Blyth GAD, Connors L, Fodor C, Cobo ER. The Network of Colonic Host Defense Peptides as an Innate Immune Defense Against Enteropathogenic Bacteria. Front Immunol 2020; 11:965. [PMID: 32508838 PMCID: PMC7251035 DOI: 10.3389/fimmu.2020.00965] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/24/2020] [Indexed: 12/11/2022] Open
Abstract
Host defense peptides, abundantly secreted by colonic epithelial cells and leukocytes, are proposed to be critical components of an innate immune response in the colon against enteropathogenic bacteria, including Shigella spp., Salmonella spp., Clostridium difficile, and attaching and effacing Escherichia coli and Citrobacter rodentium. These short cationic peptides are bactericidal against both Gram-positive and -negative enteric pathogens, but may also exert killing effects on intestinal luminal microbiota. Simultaneously, these peptides modulate numerous cellular responses crucial for gut defenses, including leukocyte chemotaxis and migration, wound healing, cytokine production, cell proliferation, and pathogen sensing. This review discusses recent advances in our understanding of expression, mechanisms of action and microbicidal and immunomodulatory functions of major colonic host defense peptides, namely cathelicidins, β-defensins, and members of the Regenerating islet-derived protein III (RegIII) and Resistin-like molecule (RELM) families. In a theoretical framework where these peptides work synergistically, aspects of pathogenesis of infectious colitis reviewed herein uncover roles of host defense peptides aimed to promote epithelial defenses and prevent pathogen colonization, mediated through a combination of direct antimicrobial function and fine-tuning of host immune response and inflammation. This interactive host defense peptide network may decode how the intestinal immune system functions to quickly clear infections, restore homeostasis and avoid damaging inflammation associated with pathogen persistence during infectious colitis. This information is of interest in development of host defense peptides (either alone or in combination with reduced doses of antibiotics) as antimicrobial and immunomodulatory therapeutics for controlling infectious colitis.
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Affiliation(s)
- Graham A D Blyth
- Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Liam Connors
- Bachelor of Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Cristina Fodor
- Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Eduardo R Cobo
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
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High circulating elafin levels are associated with Crohn's disease-associated intestinal strictures. PLoS One 2020; 15:e0231796. [PMID: 32287314 PMCID: PMC7156098 DOI: 10.1371/journal.pone.0231796] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/31/2020] [Indexed: 12/22/2022] Open
Abstract
Background Antimicrobial peptide expression is associated with disease activity in inflammatory bowel disease (IBD) patients. IBD patients have abnormal expression of elafin, a human elastase-specific protease inhibitor and antimicrobial peptide. We determined elafin expression in blood, intestine, and mesenteric fat of IBD and non-IBD patients. Methods Serum samples from normal and IBD patients were collected from two UCLA cohorts. Surgical resection samples of human colonic and mesenteric fat tissues from IBD and non-IBD (colon cancer) patients were collected from Cedars-Sinai Medical Center. Results High serum elafin levels were associated with a significantly elevated risk of intestinal stricture in Crohn’s disease (CD) patients. Microsoft Azure Machine learning algorithm using serum elafin levels and clinical data identified stricturing CD patients with high accuracy. Serum elafin levels had weak positive correlations with clinical disease activity (Partial Mayo Score and Harvey Bradshaw Index), but not endoscopic disease activity (Mayo Endoscopic Subscore and Simple Endoscopic Index for CD) in IBD patients. Ulcerative colitis (UC) patients had high serum elafin levels. Colonic elafin mRNA and protein expression were not associated with clinical disease activity and histological injury in IBD patients, but stricturing CD patients had lower colonic elafin expression than non-stricturing CD patients. Mesenteric fat in stricturing CD patients had significantly increased elafin mRNA and protein expression, which may contribute to high circulating elafin levels. Human mesenteric fat adipocytes secrete elafin protein. Conclusions High circulating elafin levels are associated with the presence of stricture in CD patients. Serum elafin levels may help identify intestinal strictures in CD patients.
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Zeng L, Tan J, Xue M, Liu L, Wang M, Liang L, Deng J, Chen W, Chen Y. An engineering probiotic producing defensin-5 ameliorating dextran sodium sulfate-induced mice colitis via Inhibiting NF-kB pathway. J Transl Med 2020; 18:107. [PMID: 32122364 PMCID: PMC7053090 DOI: 10.1186/s12967-020-02272-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 02/14/2020] [Indexed: 12/15/2022] Open
Abstract
Background Human defensin-5 (HD-5) is a key antimicrobial peptide which plays an important role in host immune defense, while the short half-life greatly limits its clinical application. The purpose of this study was to investigate the effects of an engineering probiotic producing HD-5 on intestinal barrier and explore its underlying mechanism Methods We constructed the pN8148-SHD-5 vector, and transfected this plasmid into Lactococcus lactis (L. lactis) to create the recombinant NZ9000SHD-5 strain, which continuously produces mature HD-5. NZ9000SHD-5 was administrated appropriately in a dextran sodium sulfate (DSS)-induced colitis model. Alterations in the wounded intestine were analyzed by hematoxylin–eosin staining. The changes of intestinal permeability were detected by FITC-dextran permeability test, the tight junction (TJ) proteins ZO-1 and occludin and cytokines were analyzed by western blotting or enzyme linked immunosorbent assay. In Caco-2 cell monolayers, the permeability were analyzed by transepithelial electrical resistance, and the TJ proteins were detected by western blotting and immunofluorescence. In addition, NF-κB signaling pathway was investigated to further analyze the molecular mechanism of NZ9000SHD-5 treatment on inducing intestinal protection in vitro. Results We found oral administration with NZ9000SHD-5 significantly reduced colonic glandular structure destruction and inflammatory cell infiltration, downregulated expression of several inflammation-related molecules and preserved epithelial barrier integrity. The same protective effects were observed in in vitro experiments, and pretreatment of macrophages with NZ9000SHD-5 culture supernatants prior to LPS application significantly reduced the expression of phosphorylated nuclear transcription factor-kappa B (NF-κB) p65 and its inhibitor IκBα. Conclusions These results indicate the NZ9000SHD-5 can alleviate DSS-induced mucosal damage by suppressing NF-κB signaling pathway, and NZ9000SHD-5 may be a novel therapeutic means for ulcerative colitis.
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Affiliation(s)
- Lishan Zeng
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Jiasheng Tan
- Department of Gastroenterology, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, Dongguan, Guangdong, People's Republic of China
| | - Meng Xue
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Le Liu
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Mingming Wang
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Liping Liang
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Jun Deng
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, People's Republic of China
| | - Ye Chen
- Department of Gastroenterology, State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China.
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de Bruyn M, Ringold R, Martens E, Ferrante M, Van Assche G, Opdenakker G, Dukler A, Vermeire S. The Ulcerative Colitis Response Index for Detection of Mucosal Healing in Patients Treated With Anti-tumour Necrosis Factor. J Crohns Colitis 2020; 14:176-184. [PMID: 31628842 DOI: 10.1093/ecco-jcc/jjz125] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Surrogate markers that accurately detect mucosal healing [MH] in patients with ulcerative colitis [UC] are urgently needed. Several stool neutrophil-related proteins are currently used as biomarkers for MH. However, the sensitivity and specificity are not sufficient to avoid unnecessary endoscopic evaluations. METHODS Novel serum neutrophil-related markers (neutrophil gelatinase B-associated lipocalin and matrix metalloproteinase-9 [NGAL-MMP-9 complex], cathelicidin LL-37 and chitinase 3-like 1 [CHI3L1]), together with C-reactive protein [CRP] and neutrophil counts were studied. Serum samples were obtained from 176 anti-tumour necrosis factor [anti-TNF]-treated UC patients (145 infliximab [IFX] and 31 adalimumab [ADM]) at baseline and after a median of 9.5 weeks. All patients had active disease prior to treatment (Mayo endoscopic subscore [MES] ≥ 2), and MH was defined as MES ≤ 1. Serum was also obtained from 75 healthy controls. Binary logistic regression analysis was used to generate the Ulcerative Colitis Response Index [UCRI]. The performance of individual markers and UCRI was tested with receiver operating characteristic analysis. RESULTS All neutrophil-related markers were significantly higher in active UC patients compared to healthy controls. In the IFX cohort, CRP, NGAL-MMP-9, CHI3L1 and neutrophil count decreased significantly after treatment and all marker levels were significantly lower in healers compared to non-healers following IFX. In the ADM cohort, CRP, NGAL-MMP-9, CHI3L1 and neutrophil count decreased significantly only in healers. UCRI [including CRP, CHI3L1, neutrophil count and LL-37] accurately detected MH in both IFX-treated (area under the curve [AUC] = 0.83) and ADM-treated [AUC = 0.79] patients. CONCLUSIONS The new UCRI index accurately detects MH after treatment with IFX and ADM. This panel is useful for monitoring MH in UC patients under anti-TNF treatment. PODCAST This article has an associated podcast which can be accessed at https://academic.oup.com/ecco-jcc/pages/podcast.
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Affiliation(s)
- Magali de Bruyn
- Translational Research Centre for GastroIntestinal Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Randy Ringold
- Kepler Diagnostics, Inc., Simi Valley, California, USA
| | - Erik Martens
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Marc Ferrante
- Translational Research Centre for GastroIntestinal Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium
| | - Gert Van Assche
- Translational Research Centre for GastroIntestinal Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium
| | - Ghislain Opdenakker
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | | | - Séverine Vermeire
- Translational Research Centre for GastroIntestinal Disorders (TARGID), Department of Chronic Diseases, Metabolism and Ageing (CHROMETA), KU Leuven, Leuven, Belgium.,University Hospitals Leuven, Department of Gastroenterology and Hepatology, Leuven, Belgium
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Siegmund B. Are Serum-Based Markers Going to Replace Faecal Neutrophil Markers in Ulcerative Colitis? J Crohns Colitis 2020; 14:151-152. [PMID: 32037453 DOI: 10.1093/ecco-jcc/jjz138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Britta Siegmund
- Medizinische Klinik m. S. Gastroenterologie, Infektiologie und Rheumatologie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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30
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Wang C, Li Q, Ren J. Microbiota-Immune Interaction in the Pathogenesis of Gut-Derived Infection. Front Immunol 2019; 10:1873. [PMID: 31456801 PMCID: PMC6698791 DOI: 10.3389/fimmu.2019.01873] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 07/24/2019] [Indexed: 12/12/2022] Open
Abstract
Gut-derived infection is among the most common complications in patients who underwent severe trauma, serious burn, major surgery, hemorrhagic shock or severe acute pancreatitis (SAP). It could cause sepsis and multiple organ dysfunction syndrome (MODS), which are regarded as a leading cause of mortality in these cases. Gut-derived infection is commonly caused by pathological translocation of intestinal bacteria or endotoxins, resulting from the dysfunction of the gut barrier. In the last decades, the studies regarding to the pathogenesis of gut-derived infection mainly focused on the breakdown of intestinal epithelial tight junction and increased permeability. Limited information is available on the roles of intestinal microbial barrier in the development of gut-derived infection. Recently, advances of next-generation DNA sequencing techniques and its utilization has revolutionized the gut microecology, leading to novel views into the composition of the intestinal microbiota and its connections with multiple diseases. Here, we reviewed the recent progress in the research field of intestinal barrier disruption and gut-derived infection, mainly through the perspectives of the dysbiosis of intestinal microbiota and its interaction with intestinal mucosal immune cells. This review presents novel insights into how the gut microbiota collaborates with mucosal immune cells to involve the development of pathological bacterial translocation. The data might have important implication to better understand the mechanism underlying pathological bacterial translocation, contributing us to develop new strategies for prevention and treatment of gut-derived sepsis.
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Affiliation(s)
| | - Qiurong Li
- Research Institute of General Surgery, Jinling Hospital, Medical School, Nanjing University, Nanjing, China
| | - Jianan Ren
- Research Institute of General Surgery, Jinling Hospital, Medical School, Nanjing University, Nanjing, China
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31
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Loss of gut barrier integrity triggers activation of islet-reactive T cells and autoimmune diabetes. Proc Natl Acad Sci U S A 2019; 116:15140-15149. [PMID: 31182588 PMCID: PMC6660755 DOI: 10.1073/pnas.1814558116] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Functional loss of gut barrier integrity with subsequent increased antigen trafficking and occurrence of low-grade intestinal inflammation precede the onset of type 1 diabetes (T1D) in patients and preclinical models, thus suggesting that these events are mechanistically linked to the autoimmune pathogenesis of the disease. However, a causal relationship between increased intestinal permeability and autoimmune diabetes was never demonstrated. Our data show that breakage of gut barrier continuity leads to activation of islet-reactive T cells in the intestine, thus triggering autoimmune diabetes. An important implication of our findings is that restoration of a healthy gut barrier through microbiota and diet modulation in diabetes-prone individuals could reduce intestinal activation of islet-reactive T cells and prevent T1D occurrence. Low-grade intestinal inflammation and alterations of gut barrier integrity are found in patients affected by extraintestinal autoimmune diseases such as type 1 diabetes (T1D), but a direct causal link between enteropathy and triggering of autoimmunity is yet to be established. Here, we found that onset of autoimmunity in preclinical models of T1D is associated with alterations of the mucus layer structure and loss of gut barrier integrity. Importantly, we showed that breakage of the gut barrier integrity in BDC2.5XNOD mice carrying a transgenic T cell receptor (TCR) specific for a beta cell autoantigen leads to activation of islet-reactive T cells within the gut mucosa and onset of T1D. The intestinal activation of islet-reactive T cells requires the presence of gut microbiota and is abolished when mice are depleted of endogenous commensal microbiota by antibiotic treatment. Our results indicate that loss of gut barrier continuity can lead to activation of islet-specific T cells within the intestinal mucosa and to autoimmune diabetes and provide a strong rationale to design innovative therapeutic interventions in “at-risk” individuals aimed at restoring gut barrier integrity to prevent T1D occurrence.
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Huynh E, Penney J, Caswell J, Li J. Protective Effects of Protegrin in Dextran Sodium Sulfate-Induced Murine Colitis. Front Pharmacol 2019; 10:156. [PMID: 30873029 PMCID: PMC6403130 DOI: 10.3389/fphar.2019.00156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 02/08/2019] [Indexed: 12/12/2022] Open
Abstract
Cathelicidins, a class of antimicrobial peptides, have been widely studied for their antimicrobial role in innate immune responses during infection and inflammation. At sub-antimicrobial concentrations, various cathelicidins from different species have been reported to exert chemotactic activity on neutrophils, monocytes, dendritic cells and T-cells, and also enhance angiogenesis and wound healing. To date, the role of the pig cathelicidin, protegrin-1 (PG-1), in immune modulation and tissue repair in the intestinal tract has not been investigated. The aim of the present study was to examine the potential protective effects of recombinant PG-1 in a mouse dextran sodium sulfate (DSS)-induced colitis inflammation model. This is the first report showing the protective effects of PG-1 in its various forms (pro-, cathelin-, and mature-forms) in attenuating significant body weight loss associated with DSS-induced colitis (p < 0.05). PG-1 treatment improved histological scores (P < 0.05) and influenced the gene expression of inflammatory mediators and tissue repair factors such as trefoil factor 3 (TFF3) and mucin (MUC-2). Protegrin treatment also altered the metabolite profile, returning the metabolite levels closer to untreated control levels. These findings lay the foundation for future oral application of recombinant PG-1 to potentially treat intestinal damage and inflammation.
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Affiliation(s)
- Evanna Huynh
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, ON, Canada
| | - Jenna Penney
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, ON, Canada
| | - Jeff Caswell
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - Julang Li
- Department of Animal Biosciences, Ontario Agricultural College, University of Guelph, Guelph, ON, Canada
- Department of Life Science and Engineering, Foshan University, Foshan, China
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33
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Wang J, Cheng M, Law IKM, Ortiz C, Sun M, Koon HW. Cathelicidin Suppresses Colon Cancer Metastasis via a P2RX7-Dependent Mechanism. MOLECULAR THERAPY-ONCOLYTICS 2019; 12:195-203. [PMID: 30847383 PMCID: PMC6389776 DOI: 10.1016/j.omto.2019.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 01/23/2019] [Indexed: 02/07/2023]
Abstract
The antimicrobial peptide cathelicidin inhibits development of colitis-associated colon cancer. However, the role of cathelicidin in colon cancer metastasis remains unknown. We hypothesized that cathelicidin is effective in inhibiting colon cancer metastasis. Human colon cancer HT-29 cells were injected intravenously into nude mice. Control HA-tagged adeno-associated virus (HA-AAV) or cathelicidin-overexpressing AAV (CAMP-HA-AAV) were injected intravenously into nude mice on the same day. Four weeks later, the nude mice were assessed for lung and liver metastases. Human colon cancer SW620 cells were used to study the effect of cathelicidin on cell migration and cytoskeleton. Incubation of SW620 cells with cathelicidin dose-dependently reduced cell migration, disrupted cytoskeletal structure, and reduced βIII-tubulin (TUBB3) mRNA expression. The addition of the P2RX7 antagonist KN62, but not the FPRL1 antagonist WRW4, prevented the LL-37-mediated inhibition of cell migration and TUBB3 mRNA expression. The CAMP-HA-AAV-overexpressing group showed significantly reduced human CK20 protein (by 60%) and TUBB3 mRNA expression (by 40%) in the lungs and liver of the HT-29-loaded nude mice, compared to the HA-AAV control group. Intraperitoneal injection of KN62 reversed the CAMP-HA-AAV-mediated inhibition of human CK20 and TUBB3 expression in the lungs and liver of HT-29-loaded nude mice. In conclusion, cathelicidin inhibits colon cancer metastasis via a P2RX7-dependent pathway.
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Affiliation(s)
- Jiani Wang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning 110001, China.,Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Michelle Cheng
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ivy K M Law
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Christina Ortiz
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mingjun Sun
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning 110001, China
| | - Hon Wai Koon
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
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34
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Burrello C, Garavaglia F, Cribiù FM, Ercoli G, Lopez G, Troisi J, Colucci A, Guglietta S, Carloni S, Guglielmetti S, Taverniti V, Nizzoli G, Bosari S, Caprioli F, Rescigno M, Facciotti F. Therapeutic faecal microbiota transplantation controls intestinal inflammation through IL10 secretion by immune cells. Nat Commun 2018; 9:5184. [PMID: 30518790 PMCID: PMC6281577 DOI: 10.1038/s41467-018-07359-8] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 10/25/2018] [Indexed: 12/12/2022] Open
Abstract
Alteration of the gut microbiota has been associated with different gastrointestinal disorders. Normobiosis restoration by faecal microbiota transplantation (FMT) is considered a promising therapeutic approach, even if the mechanisms underlying its efficacy are at present largely unknown. Here we sought to elucidate the functional effects of therapeutic FMT administration during experimental colitis on innate and adaptive immune responses in the intestinal mucosa. We show that therapeutic FMT reduces colonic inflammation and initiates the restoration of intestinal homeostasis through the simultaneous activation of different immune-mediated pathways, ultimately leading to IL-10 production by innate and adaptive immune cells, including CD4+ T cells, iNKT cells and Antigen Presenting Cells (APC), and reduces the ability of dendritic cells, monocytes and macrophages to present MHCII-dependent bacterial antigens to colonic T cells. These results demonstrate the capability of FMT to therapeutically control intestinal experimental colitis and poses FMT as a valuable therapeutic option in immune-related pathologies.
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Affiliation(s)
- Claudia Burrello
- Department of Experimental Oncology, European Institute of Oncology IRCCS, via Adamello 16, Milan, 20139, Italy.,Department of Oncology and Hemato-oncology, Università degli Studi di Milano, via F. Sforza 28, Milan, 20122, Italy
| | - Federica Garavaglia
- Department of Experimental Oncology, European Institute of Oncology IRCCS, via Adamello 16, Milan, 20139, Italy
| | - Fulvia Milena Cribiù
- Pathology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy
| | - Giulia Ercoli
- Pathology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy
| | - Gianluca Lopez
- Pathology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy
| | - Jacopo Troisi
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi, 84081, SA, Italy.,Theoreo srl, Spin-off company of the University of Salerno, Via degli Ulivi 3, 84090, Montecorvino Pugliano, SA, Italy.,European Biomedical Research Institute of Salerno (EBRIS), Via S. de Renzi, 3, 84125, Salerno, SA, Italy
| | - Angelo Colucci
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi, 84081, SA, Italy.,Theoreo srl, Spin-off company of the University of Salerno, Via degli Ulivi 3, 84090, Montecorvino Pugliano, SA, Italy
| | - Silvia Guglietta
- Department of Experimental Oncology, European Institute of Oncology IRCCS, via Adamello 16, Milan, 20139, Italy
| | - Sara Carloni
- Laboratory of Mucosal Immunology and Microbiota, Humanitas Clinical and Research Center, Via Manzoni 56, Milan, 20089, Italy
| | - Simone Guglielmetti
- Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milan, 20133, via Celoria 2, Italy
| | - Valentina Taverniti
- Department of Food Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milan, 20133, via Celoria 2, Italy
| | - Giulia Nizzoli
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy
| | - Silvano Bosari
- Pathology Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy
| | - Flavio Caprioli
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, via F. Sforza 35, Milan, 20135, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, via F. Sforza 28, Milan, 20135, Italy
| | - Maria Rescigno
- Laboratory of Mucosal Immunology and Microbiota, Humanitas Clinical and Research Center, Via Manzoni 56, Milan, 20089, Italy
| | - Federica Facciotti
- Department of Experimental Oncology, European Institute of Oncology IRCCS, via Adamello 16, Milan, 20139, Italy.
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35
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Duan Z, Fang Y, Sun Y, Luan N, Chen X, Chen M, Han Y, Yin Y, Mwangi J, Niu J, Wang K, Miao Y, Zhang Z, Lai R. Antimicrobial peptide LL-37 forms complex with bacterial DNA to facilitate blood translocation of bacterial DNA and aggravate ulcerative colitis. Sci Bull (Beijing) 2018; 63:1364-1375. [PMID: 36658908 DOI: 10.1016/j.scib.2018.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 07/11/2018] [Accepted: 07/31/2018] [Indexed: 02/06/2023]
Abstract
Bacterial DNA (bacDNA) is frequently found in serum of patient with ulcerative colitis (UC) and Crohn's disease, even blood bacterial culture is negative. How bacDNA evades immune elimination and is translocated into blood remain unclear. Here, we showed that bacDNA avoids elimination and disables bacteria-killing function of antimicrobial peptide LL-37 (Cramp in mice) by forming complex with LL-37, which is inducible after culture with bacteria or bacterial products. Elevated LL-37-bacDNA complex was found in plasma and lesions of patients with UC. LL-37-bacDNA promoted inflammation by inducing Th1, Th2 and Th17 differentiation and activating toll-like receptor-9 (TLR9). The complex also increased paracellular permeability, which possibly combines its inflammatory effects to promote local damage and bacDNA translocation into blood. Cramp-bacDNA aggravated mouse colitis severity while interference with the complex ameliorated the disease. The study identifies that inflammatogenic bacDNA utilizes LL-37 as a vehicle for blood translocation and to evade immune elimination. Additionally, bacteria may make a milieu by releasing bacDNA to utilize and resist host antimicrobial peptides as a 'trojan horse'.
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Affiliation(s)
- Zilei Duan
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Yaqun Fang
- Life Sciences College of Nanjing Agricultural University, Nanjing 210095, China
| | - Yang Sun
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Ning Luan
- Life Sciences College of Nanjing Agricultural University, Nanjing 210095, China
| | - Xue Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - Mengrou Chen
- Life Sciences College of Nanjing Agricultural University, Nanjing 210095, China
| | - Yajun Han
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Yizhu Yin
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China
| | - James Mwangi
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China; Sino-African Joint Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
| | - Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China.
| | - Zhiye Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China.
| | - Ren Lai
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China; Sino-African Joint Research Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.
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36
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Dias Bastos PA, Lara Santos L, Pinheiro Vitorino RM. How are the expression patterns of gut antimicrobial peptides modulated by human gastrointestinal diseases? A bridge between infectious, inflammatory, and malignant diseases. J Pept Sci 2018. [PMID: 29542263 DOI: 10.1002/psc.3071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The human gut barrier is the tissue exposed to the highest load of microorganisms, harbouring 100 trillion bacteria. In addition, the gut's renewal rate outruns that of any other human tissue. Antimicrobial peptides (AMPs) are highly optimized defense molecules in the intestinal barrier optimized to maintain gastrointestinal homeostasis. Alterations in AMPs activity can lead to or result from human gastrointestinal diseases. In this review, unique, conserved, or otherwise regular alterations in the expression patterns of human AMPs across gastrointestinal inflammatory and infectious diseases were analyzed for pattern elucidation. Human gastrointestinal diseases are associated with alterations in gut AMPs' expression patterns in a peptide-specific, disease-specific, and pathogen-specific way, modulating human gastrointestinal functioning. Across diseases, there is a (i) marked reduction in otherwise constitutively expressed AMPs, leading to increased disease susceptibility, and a (ii) significant increase in the expression of inducible AMPs, leading to tissue damage and disease severity. Infections and inflammatory conditions are associated with altered gene expression in the gut, whose patterns may favour cellular metaplasia, mucosal dysfunction, and disease states. Altered expression of AMPs can thus thrive disease severity and evolution since its early stages. Nevertheless, the modulation of AMP expression patterns unveils promising therapeutic targets.
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Affiliation(s)
| | - Lúcio Lara Santos
- Experimental Pathology and Therapeutics Group - Research Center, Portuguese Oncology Institute - Porto (IPO-Porto), Porto, Portugal.,Department of Surgical Oncology, Portuguese Oncology Institute - Porto (IPO-Porto), Porto, Portugal
| | - Rui Miguel Pinheiro Vitorino
- iBiMED, Institute for Biomedicine, Department of Medical Sciences, University of Aveiro, Aveiro, Portugal.,Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine, University of Porto, Porto, Portugal
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37
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Miranda PM, De Palma G, Serkis V, Lu J, Louis-Auguste MP, McCarville JL, Verdu EF, Collins SM, Bercik P. High salt diet exacerbates colitis in mice by decreasing Lactobacillus levels and butyrate production. MICROBIOME 2018; 6:57. [PMID: 29566748 PMCID: PMC5865374 DOI: 10.1186/s40168-018-0433-4] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 03/05/2018] [Indexed: 05/19/2023]
Abstract
BACKGROUND Changes in hygiene and dietary habits, including increased consumption of foods high in fat, simple sugars, and salt that are known to impact the composition and function of the intestinal microbiota, may explain the increase in prevalence of chronic inflammatory diseases. High salt consumption has been shown to worsen autoimmune encephalomyelitis and colitis in mouse models through p38/MAPK signaling pathway. However, the effect of high salt diet (HSD) on gut microbiota and on intestinal immune homeostasis, and their roles in determining vulnerability to intestinal inflammatory stimuli are unknown. Here, we investigate the role of gut microbiota alterations induced by HSD on the severity of murine experimental colitis. RESULTS Compared to control diet, HSD altered fecal microbiota composition and function, reducing Lactobacillus sp. relative abundance and butyrate production. Moreover, HSD affected the colonic, and to a lesser extent small intestine mucosal immunity by enhancing the expression of pro-inflammatory genes such as Rac1, Map2k1, Map2k6, Atf2, while suppressing many cytokine and chemokine genes, such as Ccl3, Ccl4, Cxcl2, Cxcr4, Ccr7. Conventionally raised mice fed with HSD developed more severe DSS- (dextran sodium sulfate) and DNBS- (dinitrobenzene sulfonic acid) induced colitis compared to mice on control diet, and this effect was absent in germ-free mice. Transfer experiments into germ-free mice indicated that the HSD-associated microbiota profile is critically dependent on continued exposure to dietary salt. CONCLUSIONS Our results indicate that the exacerbation of colitis induced by HSD is associated with reduction in Lactobacillus sp. and protective short-chain fatty acid production, as well as changes in host immune status. We hypothesize that these changes alter gut immune homeostasis and lead to increased vulnerability to inflammatory insults.
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Affiliation(s)
- Pedro M. Miranda
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
- Graduate Program in Areas of Basic and Applied Biology, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Giada De Palma
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Viktoria Serkis
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Jun Lu
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Marc P. Louis-Auguste
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Justin L. McCarville
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Elena F. Verdu
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Stephen M. Collins
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
| | - Premysl Bercik
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario Canada
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38
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Yoshimura T, McLean MH, Dzutsev AK, Yao X, Chen K, Huang J, Gong W, Zhou J, Xiang Y, H Badger J, O'hUigin C, Thovarai V, Tessarollo L, Durum SK, Trinchieri G, Bian XW, Wang JM. The Antimicrobial Peptide CRAMP Is Essential for Colon Homeostasis by Maintaining Microbiota Balance. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:2174-2185. [PMID: 29440355 PMCID: PMC5931736 DOI: 10.4049/jimmunol.1602073] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 12/21/2017] [Indexed: 01/05/2023]
Abstract
Commensal bacteria are critical for physiological functions in the gut, and dysbiosis in the gut may cause diseases. In this article, we report that mice deficient in cathelin-related antimicrobial peptide (CRAMP) were defective in the development of colon mucosa and highly sensitive to dextran sulfate sodium (DSS)-elicited colitis, as well as azoxymethane-mediated carcinogenesis. Pretreatment of CRAMP-/- mice with antibiotics markedly reduced the severity of DSS-induced colitis, suggesting CRAMP as a limiting factor on dysbiosis in the colon. This was supported by observations that wild-type (WT) mice cohoused with CRAMP-/- mice became highly sensitive to DSS-induced colitis, and the composition of fecal microbiota was skewed by CRAMP deficiency. In particular, several bacterial species that are typically found in oral microbiota, such as Mogibacterium neglectum, Desulfovibrio piger, and Desulfomicrobium orale, were increased in feces of CRAMP-/- mice and were transferred to WT mice during cohousing. When littermates of CRAMP+/- parents were examined, the composition of the fecal microbiota of WT pups and heterozygous parents was similar. In contrast, although the difference in fecal microbiota between CRAMP-/- and WT pups was small early on after weaning and single mouse housing, there was an increasing divergence with prolonged single housing. These results indicate that CRAMP is critical in maintaining colon microbiota balance and supports mucosal homeostasis, anti-inflammatory responses, and protection from carcinogenesis.
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Affiliation(s)
- Teizo Yoshimura
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702;
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Mairi H McLean
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen AB25 2ZD, United Kingdom
| | - Amiran K Dzutsev
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Xiaohong Yao
- Institute of Pathology and Southwest Cancer Center, Third Military Medical University, Chongqing 400038, China
| | - Keqiang Chen
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Jiaqiang Huang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing 100044, China
| | - Wanghua Gong
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Jiamin Zhou
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Yi Xiang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Jonathan H Badger
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Colm O'hUigin
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Vishal Thovarai
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702; and
| | - Lino Tessarollo
- Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Scott K Durum
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Giorgio Trinchieri
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702
| | - Xiu-Wu Bian
- Institute of Pathology and Southwest Cancer Center, Third Military Medical University, Chongqing 400038, China
| | - Ji Ming Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702;
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Li Y, Chu X, Liu C, Huang W, Yao Y, Xia Y, Sun P, Long Q, Feng X, Li K, Yang X, Bai H, Sun W, Ma Y. Exogenous murine antimicrobial peptide CRAMP significantly exacerbates Ovalbumin-induced airway inflammation but ameliorates oxazolone-induced intestinal colitis in BALB/c mice. Hum Vaccin Immunother 2017; 14:146-158. [PMID: 29049008 DOI: 10.1080/21645515.2017.1386823] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Cathelicidin has been reported to be multifunctional. The current study aimed to investigate the influences of exogenous cathelicidin-related antimicrobial peptide (CRAMP) on inflammatory responses in different disease models. In OVA-induced allergic airway inflammation, CRAMP significantly enhanced the infiltration of inflammatory cells and accumulation of proinflammatory Th2 cytokine IL-13 and IL-33 in bronchial alveolar lavage fluid (BALF), exacerbated lung tissue inflammation and airway goblet cell hyperplasia, and elevated OVA-specific IgE level in serum. In oxazolone-induced intestinal colitis, the expression levels of CRAMP and its receptor FPR2 significantly increased in comparison with those of TNBS-induced mice, vesicle and normal controls. Exogenous CRAMP significantly prevented the development of ulcerative colitis, evidenced by improved body weight regain, decreased colons weight/length ratio, elevated epithelial integrity, and ameliorated colon tissue inflammation. In addition, pro-inflammatory cytokines TNF-α, IL-1β, IL-4 and IL-13, as well as chemokines CXCL2 and CXCL5 for neutrophils recruitment were significantly decreased in CRAMP-treated mice, and epithelial repair-related factors MUC2 and Claudin1 were increased, determined by real time-PCR and ELISAs. The results indicated that although CRAMP has pro-inflammatory effects in airway, local application of exogenous CRAMP might be a potential approach for the treatment of ulcerative colitis.
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Affiliation(s)
- Yang Li
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Xiaojie Chu
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Cunbao Liu
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Weiwei Huang
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Yufeng Yao
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Ye Xia
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Pengyan Sun
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Qiong Long
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Xuejun Feng
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Kui Li
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Xu Yang
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Hongmei Bai
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Wenjia Sun
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
| | - Yanbing Ma
- a Laboratory of Molecular Immunology , Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College , Kunming , China.,b Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases , Kunming , China.,c Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases , Kunming , China
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Xu C, Ghali S, Wang J, Shih DQ, Ortiz C, Mussatto CC, Lee EC, Tran DH, Jacobs JP, Lagishetty V, Fleshner P, Robbins L, Vu M, Hing TC, McGovern DPB, Koon HW. CSA13 inhibits colitis-associated intestinal fibrosis via a formyl peptide receptor like-1 mediated HMG-CoA reductase pathway. Sci Rep 2017; 7:16351. [PMID: 29180648 PMCID: PMC5703874 DOI: 10.1038/s41598-017-16753-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/16/2017] [Indexed: 01/24/2023] Open
Abstract
Many Crohn’s disease (CD) patients develop intestinal strictures, which are difficult to prevent and treat. Cationic steroid antimicrobial 13 (CSA13) shares cationic nature and antimicrobial function with antimicrobial peptide cathelicidin. As many functions of cathelicidin are mediated through formyl peptide receptor-like 1 (FPRL1), we hypothesize that CSA13 mediates anti-fibrogenic effects via FPRL1. Human intestinal biopsies were used in clinical data analysis. Chronic trinitrobenzene sulfonic acid (TNBS) colitis-associated intestinal fibrosis mouse model with the administration of CSA13 was used. Colonic FPRL1 mRNA expression was positively correlated with the histology scores of inflammatory bowel disease patients. In CD patients, colonic FPRL1 mRNA was positively correlated with intestinal stricture. CSA13 administration ameliorated intestinal fibrosis without influencing intestinal microbiota. Inhibition of FPRL1, but not suppression of intestinal microbiota, reversed these protective effects of CSA13. Metabolomic analysis indicated increased fecal mevalonate levels in the TNBS-treated mice, which were reduced by the CSA13 administration. CSA13 inhibited colonic HMG-CoA reductase activity in an FPRL1-dependent manner. Mevalonate reversed the anti-fibrogenic effect of CSA13. The increased colonic FPRL1 expression is associated with severe mucosal disease activity and intestinal stricture. CSA13 inhibits intestinal fibrosis via FPRL1-dependent modulation of HMG-CoA reductase pathway.
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Affiliation(s)
- Chunlan Xu
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA.,The Key Laboratory for Space Bioscience and Biotechnology, School of Life Science, Northwestern Polytechnical University, Xian, Shaanxi Province, China
| | - Sally Ghali
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Jiani Wang
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA.,Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang City, Liaoning Province, China
| | - David Q Shih
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Christina Ortiz
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Caroline C Mussatto
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Elaine C Lee
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Diana H Tran
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Jonathan P Jacobs
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Venu Lagishetty
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Phillip Fleshner
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Lori Robbins
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Michelle Vu
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Tressia C Hing
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Dermot P B McGovern
- F. Widjaja Foundation, Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Hon Wai Koon
- Center for Inflammatory Bowel Diseases, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, CA, 90095, USA.
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Marin M, Holani R, Shah CB, Odeón A, Cobo ER. Cathelicidin modulates synthesis of Toll-like Receptors (TLRs) 4 and 9 in colonic epithelium. Mol Immunol 2017; 91:249-258. [PMID: 28988039 DOI: 10.1016/j.molimm.2017.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 09/12/2017] [Accepted: 09/21/2017] [Indexed: 12/13/2022]
Abstract
Cathelicidin are innate antimicrobial peptides with broad immunomodulatory functions; however, their role in regulating intestinal defenses is not well characterized. This study aimed to investigate the role of cathelicidin modulating expression of Toll-like receptors (TLRs) 4 and 9 in colonic epithelium in response to bacterial patterns. We demonstrated herein that intestinal epithelial cells, when primed by bacterial lipopolysaccharide (LPS), responded to cathelicidin by increased transcription and protein synthesis of TLR4. This cathelicidin-induced response required the interaction of LPS-TLR4 and activation of MAPK signalling pathways. However, cathelicidin blocked TLR9 responses induced by TLR9 ligand CpG oligodeoxynucleotide (CpG ODN) in these colonic epithelial cells. Modulations of TLRs triggered by cathelicidin in intestinal epithelium occurred mainly in the apical compartment of intestinal cells. Activation of TLR4 by ligands in combination with cathelicidin promoted CXCL8 chemokine secretion and epithelial antimicrobial defenses against Escherichia coli. We concluded that cathelicidin selectively modulated synthesis of TLR4 and 9 in intestinal epithelium, but only when cells were exposed to virulence factors, mostly from apical surfaces. Enhanced TLR4 expression promoted by cathelicidin in intestinal epithelium may be crucial for controlling enteric infectious diseases.
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Affiliation(s)
- Maia Marin
- National Scientific and Technical Research Council (CONICET), Argentina
| | - Ravi Holani
- Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Canada
| | | | - Anselmo Odeón
- Animal Production, Balcarce Experimental Station, National Institute of Agricultural Technology (INTA), Argentina
| | - Eduardo R Cobo
- Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Canada.
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Zhao R, Liu Y, Wang H, Yang J, Niu W, Fan S, Xiong W, Ma J, Li X, Phillips JB, Tan M, Qiu Y, Li G, Zhou M. BRD7 plays an anti-inflammatory role during early acute inflammation by inhibiting activation of the NF-кB signaling pathway. Cell Mol Immunol 2017; 14:830-841. [PMID: 27374794 PMCID: PMC5649105 DOI: 10.1038/cmi.2016.31] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 05/06/2016] [Accepted: 05/06/2016] [Indexed: 02/07/2023] Open
Abstract
Increasing evidence has shown a strong association between tumor-suppressor genes and inflammation. However, the role of BRD7 as a novel tumor suppressor in inflammation remains unknown. In this study, by observing BRD7 knockout mice for 6-12 months, we discovered that compared with BRD7+/+ mice, BRD7-/- mice were more prone to inflammation, such as external inflammation and abdominal abscess. By using mouse embryo fibroblast (MEF) cells from the BRD7 knockout mouse, an in vitro lipopolysaccharide (LPS)-stimulated MEF cell line was established. The mRNA levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), chemokine (C-X-C motif) ligand 1 (CXCL-1) and inducible nitric oxide synthase (iNOS) were significantly increased in BRD7-/- MEF cells compared with BRD7+/+ MEF cells after LPS stimulation for 1 or 6 h. In addition, the cytoplasm-to-nucleus translocation of nuclear factor kappa-B (NF-κB; p65) and an increased NF-κB reporter activity were observed in BRD7-/- MEF cells at the 1 h time point but not at the 6 h time point. Furthermore, an in vivo dextran sodium sulfate (DSS)-induced acute colitis model was created. As expected, the disease activity index (DAI) value was significantly increased in the BRD7-/- mice after DSS treatment for 1-5 days, which was demonstrated by the presence of a significantly shorter colon, splenomegaly and tissue damage. Moreover, higher expression levels of IL-6, TNF-α, p65, CXCL-1 and iNOS, and an increased level of NF-κB (p65) nuclear translocation were also found in the DSS-treated BRD7-/- mice. These findings suggest that BRD7 has an anti-inflammatory role during early acute inflammation by inhibiting activation of the NF-кB signaling pathway, which provides evidence to aid in understanding the therapeutic effects of BRD7 on inflammatory diseases.
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Affiliation(s)
- Ran Zhao
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Yukun Liu
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Heran Wang
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Jing Yang
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Weihong Niu
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Songqing Fan
- The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Wei Xiong
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Jian Ma
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Xiaoling Li
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Joshua B Phillips
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA
| | - Ming Tan
- Mitchell Cancer Institute, University of South Alabama, Mobile, AL 36604, USA
| | - Yuanzheng Qiu
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Guiyuan Li
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
| | - Ming Zhou
- Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
- Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Changsha, Hunan 410078, China
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Xia X, Cheng L, Zhang S, Wang L, Hu J. The role of natural antimicrobial peptides during infection and chronic inflammation. Antonie van Leeuwenhoek 2017; 111:5-26. [PMID: 28856473 DOI: 10.1007/s10482-017-0929-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 08/15/2017] [Indexed: 01/12/2023]
Abstract
Natural antimicrobial peptides (AMPs), a family of small polypeptides that are produced by constitutive or inducible expression in organisms, are integral components of the host innate immune system. In addition to their broad-spectrum antibacterial activity, natural AMPs also have many biological activities against fungi, viruses and parasites. Natural AMPs exert multiple immunomodulatory roles that may predominate under physiological conditions where they lose their microbicidal properties in serum and tissue environments. Increased drug resistance among microorganisms is occurring far more quickly than the discovery of new antibiotics. Natural AMPs have shown promise as 'next generation antibiotics' due to their broad-spectrum curative effects, low toxicity, the fact that they are not residual in animals, and the low rates of resistance exhibited by many pathogens. Many types of synthetic AMPs are currently being tested in clinical trials for the prevention and treatment of various diseases such as chemotherapy-associated infections, diabetic foot ulcers, catheter-related infections, and other conditions. Here, we provide an overview of the types and functions of natural AMPs and their role in combating microorganisms and different infectious and inflammatory diseases.
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Affiliation(s)
- Xiaojing Xia
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, No. 90, Hualan Street, Xinxiang, 453003, People's Republic of China
| | - Likun Cheng
- Shandong Binzhou Animal Science and Veterinary Medicine Academy, Binzhou, 256600, People's Republic of China
| | - Shouping Zhang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, No. 90, Hualan Street, Xinxiang, 453003, People's Republic of China
| | - Lei Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, No. 90, Hualan Street, Xinxiang, 453003, People's Republic of China
| | - Jianhe Hu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, No. 90, Hualan Street, Xinxiang, 453003, People's Republic of China.
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Ta A, Thakur BK, Dutta P, Sinha R, Koley H, Das S. Double-stranded RNA induces cathelicidin expression in the intestinal epithelial cells through phosphatidylinositol 3-kinase-protein kinase Cζ-Sp1 pathway and ameliorates shigellosis in mice. Cell Signal 2017; 35:140-153. [DOI: 10.1016/j.cellsig.2017.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 02/21/2017] [Accepted: 03/23/2017] [Indexed: 02/06/2023]
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Circulating cathelicidin levels correlate with mucosal disease activity in ulcerative colitis, risk of intestinal stricture in Crohn's disease, and clinical prognosis in inflammatory bowel disease. BMC Gastroenterol 2017; 17:63. [PMID: 28494754 PMCID: PMC5427565 DOI: 10.1186/s12876-017-0619-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 04/20/2017] [Indexed: 02/08/2023] Open
Abstract
Background Cathelicidin (LL-37) is an antimicrobial peptide known to be associated with various autoimmune diseases. We attempt to determine if cathelicidin can accurately reflect IBD disease activity. We hypothesize that serum cathelicidin correlates with mucosal disease activity, stricture, and clinical prognosis of IBD patients. Methods Serum samples were collected from two separate cohorts of patients at the University of California, Los Angeles. Cohort 1 consisted of 50 control, 23 UC, and 28 CD patients. Cohort 2 consisted of 20 control, 57 UC, and 67 CD patients. LL-37 levels were determined by ELISA. Data from both cohorts were combined for calculation of accuracies in indicating mucosal disease activity, relative risks of stricture, and odds ratios of predicting disease development. Results Serum cathelicidin levels were inversely correlated with Partial Mayo Scores of UC patients and Harvey-Bradshaw Indices of CD patients. Among IBD patients with moderate or severe initial disease activity, the patients with high initial LL-37 levels had significantly better recovery than the patients with low initial LL-37 levels after 6–18 months, suggesting that high LL-37 levels correlate with good prognosis. Co-evaluation of LL-37 and CRP levels was more accurate than CRP alone or LL-37 alone in the correlation with Mayo Endoscopic Score of UC patients. Low LL-37 levels indicated a significantly elevated risk of intestinal stricture in CD patients. Conclusion Co-evaluation of LL-37 and CRP can indicate mucosal disease activity in UC patients. LL-37 can predict future clinical activity in IBD patients and indicate risk of intestinal stricture in CD patients. Electronic supplementary material The online version of this article (doi:10.1186/s12876-017-0619-4) contains supplementary material, which is available to authorized users.
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López-Posadas R, Neurath MF, Atreya I. Molecular pathways driving disease-specific alterations of intestinal epithelial cells. Cell Mol Life Sci 2017; 74:803-826. [PMID: 27624395 PMCID: PMC11107577 DOI: 10.1007/s00018-016-2363-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/06/2016] [Accepted: 09/08/2016] [Indexed: 12/22/2022]
Abstract
Due to the fact that chronic inflammation as well as tumorigenesis in the gut is crucially impacted by the fate of intestinal epithelial cells, our article provides a comprehensive overview of the composition, function, regulation and homeostasis of the gut epithelium. In particular, we focus on those aspects which were found to be altered in the context of inflammatory bowel diseases or colorectal cancer and also discuss potential molecular targets for a disease-specific therapeutic intervention.
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Affiliation(s)
- Rocío López-Posadas
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Ulmenweg 18, 91054, Erlangen, Germany
| | - Imke Atreya
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Ulmenweg 18, 91054, Erlangen, Germany.
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MUC2 Mucin and Butyrate Contribute to the Synthesis of the Antimicrobial Peptide Cathelicidin in Response to Entamoeba histolytica- and Dextran Sodium Sulfate-Induced Colitis. Infect Immun 2017; 85:IAI.00905-16. [PMID: 28069814 DOI: 10.1128/iai.00905-16] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/21/2016] [Indexed: 12/14/2022] Open
Abstract
Embedded in the colonic mucus are cathelicidins, small cationic peptides secreted by colonic epithelial cells. Humans and mice have one cathelicidin-related antimicrobial peptide (CRAMP) each, LL-37/hCAP-18 and Cramp, respectively, with related structure and functions. Altered production of MUC2 mucin and antimicrobial peptides is characteristic of intestinal amebiasis. The interactions between MUC2 mucin and cathelicidins in conferring innate immunity against Entamoeba histolytica are not well characterized. In this study, we quantified whether MUC2 expression and release could regulate the expression and secretion of cathelicidin LL-37 in colonic epithelial cells and in the colon. The synthesis of LL-37 was enhanced with butyrate (a product of bacterial fermentation) and interleukin-1β (IL-1β) (a proinflammatory cytokine in colitis) in the presence of exogenously added purified MUC2. The LL-37 responses to butyrate and IL-1β were higher in high-MUC2-producing cells than in lentivirus short hairpin RNA (shRNA) MUC2-silenced cells. Activation of cyclic adenylyl cyclase (AMP) and mitogen-activated protein kinase (MAPK) signaling pathways was necessary for the simultaneous expression of MUC2 and cathelicidins. In Muc2 mucin-deficient (Muc2-/-) mice, murine cathelicidin (Cramp) was significantly reduced compared to that in Muc2+/- and Muc2+/+ littermates. E. histolytica-induced acute inflammation in colonic loops stimulated high levels of cathelicidin in Muc2+/+ but not in Muc2-/- littermates. In dextran sodium sulfate (DSS)-induced colitis in Muc2+/+ mice, which depletes the mucus barrier and goblet cell mucin, Cramp expression was significantly enhanced during restitution. These studies demonstrate regulatory mechanisms between MUC2 and cathelicidins in the colonic mucosa where an intact mucus barrier is essential for expression and secretion of cathelicidins in response to E. histolytica- and DSS-induced colitis.
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Dutta P, Ta A, Thakur BK, Dasgupta N, Das S. Biphasic Ccl20 regulation by Toll-like receptor 9 through the activation of ERK-AP-1 and non-canonical NF-κB signaling pathways. Biochim Biophys Acta Gen Subj 2016; 1861:3365-3377. [PMID: 27590109 DOI: 10.1016/j.bbagen.2016.08.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 08/24/2016] [Accepted: 08/28/2016] [Indexed: 12/27/2022]
Abstract
BACKGROUND Chemokines play key roles in immune homeostasis and inflammatory response. Considering the role of Ccl20 and Toll-like receptor 9 (TLR9) in gut homeostasis and inflammatory bowel disease (IBD), regulation of Ccl20 by bacterial DNA, the TLR9 ligand, merits in-depth studies. METHODS We analyzed Ccl20 expression in various epithelial cell (EC) lines by q-PCR and ELISA. In-vivo expression was investigated in isolated murine colonocytes by immunoblotting. Transcriptional regulation of Ccl20 was studied by reporter assays, gene knock-down, electrophoretic mobility shift assay and chromatin immunoprecipitation. Activation of upstream kinases was checked by immunoblotting. RESULTS We showed low levels of Ccl20 expression in mouse colonic ECs, but marked induction by in vivo treatment with bacterial DNA. This corroborated with persistent Ccl20 induction in different EC lines. We found involvement of MAP-kinases during the early hours after stimulation, and a novel AP-1site (-252bp) regulated the expression in colonic ECs. More importantly, mutually exclusive transcriptional regulation by AP-1 (cjun/cfos) and non-canonical NF-κB (RelB/p52) downstream of MEK-ERK and NIK-IKK-α-NF-κB2 (p100) phosphorylation, respectively was responsible for persistent Ccl20 expression in the colonic cells, while canonical NF-κB isoforms played no role. CONCLUSIONS Persistent Ccl20 induction by TLR9 in colonic ECs involves early and delayed activation of two independent signaling pathways. This is the first report of non-canonical NF-κB activation and Ccl20 expression in the colonic ECs by TLR9. GENERAL SIGNIFICANCE Our study will help to better understand immune regulation by Ccl20 in the intestine and may be exploited for future development of novel therapeutics against IBD.
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Affiliation(s)
- Pujarini Dutta
- Division of Clinical Medicine, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Atri Ta
- Division of Clinical Medicine, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Bhupesh Kumar Thakur
- Division of Clinical Medicine, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Nirmalya Dasgupta
- Division of Clinical Medicine, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Santasabuj Das
- Division of Clinical Medicine, National Institute of Cholera and Enteric Diseases, Kolkata, India.
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Research Advance in Intestinal Mucosal Barrier and Pathogenesis of Crohn's Disease. Gastroenterol Res Pract 2016; 2016:9686238. [PMID: 27651792 PMCID: PMC5019909 DOI: 10.1155/2016/9686238] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 07/07/2016] [Accepted: 08/15/2016] [Indexed: 01/30/2023] Open
Abstract
To date, the etiology and pathogenesis of Crohn's disease (CD) have not been fully elucidated. It is widely accepted that genetic, immune, and environment factors are closely related to the development of CD. As an important defensive line for human body against the environment, intestinal mucosa is able to protect the homeostasis of gut bacteria and alleviate the intestinal inflammatory and immune response. It is evident that the dysfunction of intestinal mucosa barriers plays a crucial role in CD initiation and development. Yet researches are insufficient on intestinal mucosal barrier's action in the prevention of CD onset. This article summarizes the research advances about the correlations between the disorders of intestinal mucosal barriers and CD.
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Abstract
Human cathelicidin LL-37, the only member of the cathelicidin family of host defense peptides expressed in humans, plays a crucial role in host defense against pathogen invasion, as well as in regulating the functions of anti-inflammation, antitumorigenesis, and tissue repair. It is primarily produced by phagocytic leukocytes and epithelial cells, and mediates a wide range of biological responses. Emerging evidence from several studies indicates that LL-37 plays a prominent and complex role in inflammatory bowel disease (IBD). Although overexpression of LL-37 has been implicated in the inflamed and noninflamed colon mucosa in patients with ulcerative colitis, LL-37 expression was not changed in the inflamed or noninflamed colon or ileal mucosa in patients with Crohn's disease. Furthermore, studies in animal models and human patients further characterized the protective effect of cathelicidins both in ulcerative colitis and Crohn's disease. These data suggest the intricate functions of LL-37 in IBD. They will also create many strategies and opportunities for therapeutic intervention in IBD in the future. This review aims to elucidate the structure and bioactivity of LL-37 and also discuss the recent progress in understanding the relationship between LL-37 and IBD.
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