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Zheng X, Liu L, Cao C, Huang S, Tang D, Li S, He Q. Squamous papilloma involving the mandible: A case report and descriptive literature review. Exp Ther Med 2024; 28:301. [PMID: 38873042 PMCID: PMC11168030 DOI: 10.3892/etm.2024.12590] [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: 10/27/2023] [Accepted: 02/23/2024] [Indexed: 06/15/2024] Open
Abstract
Squamous papilloma is a benign neoplasm that originates from the stratified squamous epithelium of the mucous membrane. Its principal etiological factor is human papillomavirus infection, with a predilection for manifesting within the oral cavity. Squamous papilloma predominantly affects regions on the palate, cheeks, lips and tongue. However, to the best of our knowledge, the occurrence of squamous papilloma within the confines of the mandible remains unreported hitherto. The present report documents a case of squamous papilloma involving the mandible who was managed at the First Affiliated Hospital of Sun Yat-sen University (Guangzhou, China) in January 2023. The patient underwent a series of recurrent jaw inflammations, manifesting with malignant imaging characteristics. Subsequent pathological analysis confirmed a diagnosis of papilloma in the jaw. The present report highlights the pivotal role of prolonged inflammation in the genesis of jaw squamous papilloma, prompting avenues for further investigation, including the potential of inflammation to induce aberrant cell growth, mediate cell interactions, orchestrate cytokine actions and influence stress mediators. In addition, the current study posits a plausible connection between persistent inflammation, compromised epithelial integrity and an increased likelihood of head and neck papilloma, particularly concerning human papillomavirus infection. This article delineates the clinical attributes of the uncommon manifestations of jaw papilloma and delves into the associated mechanisms, thereby contributing to an enhanced comprehension of jaw disorders. This comprehensive insight equips clinicians with a heightened knowledge base for more precise diagnosis and treatment of analogous cases.
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Affiliation(s)
- Xin Zheng
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Lianlian Liu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Congyuan Cao
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Shuojin Huang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Dongxiao Tang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
- Department of Stomatology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Shuai Li
- Department of Oral and Maxillofacial Surgery, College of Stomatology, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Qianting He
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510080, P.R. China
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2
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Aruwa CE, Sabiu S. Interplay of poultry-microbiome interactions - influencing factors and microbes in poultry infections and metabolic disorders. Br Poult Sci 2024:1-15. [PMID: 38920059 DOI: 10.1080/00071668.2024.2356666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/06/2024] [Indexed: 06/27/2024]
Abstract
1. The poultry microbiome and its stability at every point in time, either free range or reared under different farming systems, is affected by several environmental and innate factors. The interaction of the poultry birds with their microbiome, as well as several inherent and extraneous factors contribute to the microbiome dynamics. A poor understanding of this could worsen poultry heath and result in disease/metabolic disorders.2. Many diseased states associated with poultry have been linked to dysbiosis state, where the microbiome experiences some perturbation. Dysbiosis itself is too often downplayed; however, it is considered a disease which could lead to more serious conditions in poultry. The management of interconnected factors by conventional and emerging technologies (sequencing, nanotechnology, robotics, 3D mini-guts) could prove to be indispensable in ensuring poultry health and welfare.3. Findings showed that high-throughput technological advancements enhanced scientific insights into emerging trends surrounding the poultry gut microbiome and ecosystem, the dysbiotic condition, and the dynamic roles of intrinsic and exogenous factors in determining poultry health. Yet, a combination of conventional, -omics based and other techniques further enhance characterisation of key poultry microbiome actors, their mechanisms of action, and roles in maintaining gut homoeostasis and health, in a bid to avert metabolic disorders and infections.4. In conclusion, there is an important interplay of innate, environmental, abiotic and biotic factors impacting on poultry gut microbiome homoeostasis, dysbiosis, and overall health. Associated infections and metabolic disorders can result from the interconnected nature of these factors. Emerging concepts (interkingdom or network signalling and neurotransmitter), and future technologies (mini-gut models, cobots) need to include these interactions to ensure accurate control and outcomes.
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Affiliation(s)
- C E Aruwa
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa
| | - S Sabiu
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa
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3
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Wang K, Liu Y, Li H, Liang X, Hao M, Yuan D, Ding L. Claudin-7 is essential for the maintenance of colonic stem cell homoeostasis via the modulation of Wnt/Notch signalling. Cell Death Dis 2024; 15:284. [PMID: 38654000 PMCID: PMC11039680 DOI: 10.1038/s41419-024-06658-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 04/02/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
Intestinal stem cells (ISCs) play a crucial role in the continuous self-renewal and recovery of the intestinal epithelium. In previous studies, we have revealed that the specific absence of Claudin-7 (Cldn-7) in intestinal epithelial cells (IECs) can lead to the development of spontaneous colitis. However, the mechanisms by which Cldn-7 maintains homeostasis in the colonic epithelium remain unclear. Therefore, in the present study, we used IEC- and ISC-specific Cldn-7 knockout mice to investigate the regulatory effects of Cldn-7 on colonic Lgr5+ stem cells in the mediation of colonic epithelial injury and repair under physiological and inflammatory conditions. Notably, our findings reveal that Cldn-7 deletion disrupts the self-renewal and differentiation of colonic stem cells alongside the formation of colonic organoids in vitro. Additionally, these Cldn-7 knockout models exhibited heightened susceptibility to experimental colitis, limited epithelial repair and regeneration, and increased differentiation toward the secretory lineage. Mechanistically, we also established that Cldn-7 facilitates the proliferation, differentiation, and organoid formation of Lgr5+ stem cells through the maintenance of Wnt and Notch signalling pathways in the colonic epithelium. Overall, our study provides new insights into the maintenance of ISC function and colonic epithelial homoeostasis.
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Affiliation(s)
- Kun Wang
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yin Liu
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Huimin Li
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Xiaoqing Liang
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Mengdi Hao
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Dajin Yuan
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Lei Ding
- Gastrointestinal Oncology Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
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4
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Hausmann A, Steenholdt C, Nielsen OH, Jensen KB. Immune cell-derived signals governing epithelial phenotypes in homeostasis and inflammation. Trends Mol Med 2024; 30:239-251. [PMID: 38320941 DOI: 10.1016/j.molmed.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 02/08/2024]
Abstract
The intestinal epithelium fulfills important physiological functions and forms a physical barrier to the intestinal lumen. Barrier function is regulated by several pathways, and its impairment contributes to the pathogenesis of inflammatory bowel disease (IBD), a chronic inflammatory condition affecting more than seven million people worldwide. Current treatment options specifically target inflammatory mediators and have led to improvement of clinical outcomes; however, a significant proportion of patients experience treatment failure. Pro-repair effects of inflammatory mediators on the epithelium are emerging. In this review we summarize current knowledge on involved epithelial pathways, identify open questions, and put recent findings into clinical perspective, and pro-repair effects. A detailed understanding of epithelial pathways integrating mucosal stimuli in homeostasis and inflammation is crucial for the development of novel, more targeted therapies.
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Affiliation(s)
- Annika Hausmann
- Novo Nordisk Foundation Center for Stem Cell Medicine, reNEW, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen N, Denmark.
| | - Casper Steenholdt
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
| | - Ole H Nielsen
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, DK-2730 Herlev, Denmark
| | - Kim B Jensen
- Novo Nordisk Foundation Center for Stem Cell Medicine, reNEW, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen N, Denmark.
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5
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Kollmann C, Buerkert H, Meir M, Richter K, Kretzschmar K, Flemming S, Kelm M, Germer CT, Otto C, Burkard N, Schlegel N. Human organoids are superior to cell culture models for intestinal barrier research. Front Cell Dev Biol 2023; 11:1223032. [PMID: 37849736 PMCID: PMC10577213 DOI: 10.3389/fcell.2023.1223032] [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: 05/15/2023] [Accepted: 09/19/2023] [Indexed: 10/19/2023] Open
Abstract
Loss of intestinal epithelial barrier function is a hallmark in digestive tract inflammation. The detailed mechanisms remain unclear due to the lack of suitable cell-based models in barrier research. Here we performed a detailed functional characterization of human intestinal organoid cultures under different conditions with the aim to suggest an optimized ex-vivo model to further analyse inflammation-induced intestinal epithelial barrier dysfunction. Differentiated Caco2 cells as a traditional model for intestinal epithelial barrier research displayed mature barrier functions which were reduced after challenge with cytomix (TNFα, IFN-γ, IL-1ß) to mimic inflammatory conditions. Human intestinal organoids grown in culture medium were highly proliferative, displayed high levels of LGR5 with overall low rates of intercellular adhesion and immature barrier function resembling conditions usually found in intestinal crypts. WNT-depletion resulted in the differentiation of intestinal organoids with reduced LGR5 levels and upregulation of markers representing the presence of all cell types present along the crypt-villus axis. This was paralleled by barrier maturation with junctional proteins regularly distributed at the cell borders. Application of cytomix in immature human intestinal organoid cultures resulted in reduced barrier function that was accompanied with cell fragmentation, cell death and overall loss of junctional proteins, demonstrating a high susceptibility of the organoid culture to inflammatory stimuli. In differentiated organoid cultures, cytomix induced a hierarchical sequence of changes beginning with loss of cell adhesion, redistribution of junctional proteins from the cell border, protein degradation which was accompanied by loss of epithelial barrier function. Cell viability was observed to decrease with time but was preserved when initial barrier changes were evident. In summary, differentiated intestinal organoid cultures represent an optimized human ex-vivo model which allows a comprehensive reflection to the situation observed in patients with intestinal inflammation. Our data suggest a hierarchical sequence of inflammation-induced intestinal barrier dysfunction starting with loss of intercellular adhesion, followed by redistribution and loss of junctional proteins resulting in reduced barrier function with consecutive epithelial death.
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Affiliation(s)
- Catherine Kollmann
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Hannah Buerkert
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Michael Meir
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Konstantin Richter
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Kai Kretzschmar
- Mildred-Scheel Early Career Centre (MSNZ) for Cancer Research, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Sven Flemming
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Matthias Kelm
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Christoph-Thomas Germer
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Christoph Otto
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Natalie Burkard
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Nicolas Schlegel
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital Wuerzburg, Wuerzburg, Germany
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6
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Dawson RE, Deswaerte V, West AC, Sun E, Wray‐McCann G, Livis T, Kumar B, Rodriguez E, Gabay C, Ferrero RL, Jenkins BJ. The cytosolic DNA sensor AIM2 promotes Helicobacter-induced gastric pathology via the inflammasome. Immunol Cell Biol 2023; 101:444-457. [PMID: 36967659 PMCID: PMC10952813 DOI: 10.1111/imcb.12641] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/14/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023]
Abstract
Helicobacter pylori (H. pylori) infection can trigger chronic gastric inflammation perpetuated by overactivation of the innate immune system, leading to a cascade of precancerous lesions culminating in gastric cancer. However, key regulators of innate immunity that promote H. pylori-induced gastric pathology remain ill-defined. The innate immune cytosolic DNA sensor absent in melanoma 2 (AIM2) contributes to the pathogenesis of numerous autoimmune and chronic inflammatory diseases, as well as cancers including gastric cancer. We therefore investigated whether AIM2 contributed to the pathogenesis of Helicobacter-induced gastric disease. Here, we reveal that AIM2 messenger RNA and protein expression levels are elevated in H. pylori-positive versus H. pylori-negative human gastric biopsies. Similarly, chronic Helicobacter felis infection in wild-type mice augmented Aim2 gene expression levels compared with uninfected controls. Notably, gastric inflammation and hyperplasia were less severe in H. felis-infected Aim2-/- versus wild-type mice, evidenced by reductions in gastric immune cell infiltrates, mucosal thickness and proinflammatory cytokine and chemokine release. In addition, H. felis-driven proliferation and apoptosis in both gastric epithelial and immune cells were largely attenuated in Aim2-/- stomachs. These observations in Aim2-/- mouse stomachs correlated with decreased levels of inflammasome activity (caspase-1 cleavage) and the mature inflammasome effector cytokine, interleukin-1β. Taken together, this work uncovers a pathogenic role for the AIM2 inflammasome in Helicobacter-induced gastric disease, and furthers our understanding of the host immune response to a common pathogen and the complex and varying roles of AIM2 at different stages of cancerous and precancerous gastric disease.
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Affiliation(s)
- Ruby E Dawson
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Virginie Deswaerte
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Alison C West
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Ekimei Sun
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Georgie Wray‐McCann
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Thaleia Livis
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
| | - Beena Kumar
- Department of Anatomical PathologyMonash HealthClaytonVICAustralia
| | - Emiliana Rodriguez
- Pathology and Immunology DepartmentCMU/University of GenevaGenevaSwitzerland
| | - Cem Gabay
- Pathology and Immunology DepartmentCMU/University of GenevaGenevaSwitzerland
| | - Richard L Ferrero
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
- Department of Microbiology, Biomedicine Discovery InstituteMonash UniversityClaytonVICAustralia
| | - Brendan J Jenkins
- Centre for Innate Immunity and Infectious DiseasesHudson Institute of Medical ResearchClaytonVICAustralia
- Department of Molecular and Translational Science, Faculty of Medicine, Nursing and Health SciencesMonash UniversityClaytonVICAustralia
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7
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Lechuga S, Braga-Neto MB, Naydenov NG, Rieder F, Ivanov AI. Understanding disruption of the gut barrier during inflammation: Should we abandon traditional epithelial cell lines and switch to intestinal organoids? Front Immunol 2023; 14:1108289. [PMID: 36875103 PMCID: PMC9983034 DOI: 10.3389/fimmu.2023.1108289] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
Disruption of the intestinal epithelial barrier is a hallmark of mucosal inflammation. It increases exposure of the immune system to luminal microbes, triggering a perpetuating inflammatory response. For several decades, the inflammatory stimuli-induced breakdown of the human gut barrier was studied in vitro by using colon cancer derived epithelial cell lines. While providing a wealth of important data, these cell lines do not completely mimic the morphology and function of normal human intestinal epithelial cells (IEC) due to cancer-related chromosomal abnormalities and oncogenic mutations. The development of human intestinal organoids provided a physiologically-relevant experimental platform to study homeostatic regulation and disease-dependent dysfunctions of the intestinal epithelial barrier. There is need to align and integrate the emerging data obtained with intestinal organoids and classical studies that utilized colon cancer cell lines. This review discusses the utilization of human intestinal organoids to dissect the roles and mechanisms of gut barrier disruption during mucosal inflammation. We summarize available data generated with two major types of organoids derived from either intestinal crypts or induced pluripotent stem cells and compare them to the results of earlier studies with conventional cell lines. We identify research areas where the complementary use of colon cancer-derived cell lines and organoids advance our understanding of epithelial barrier dysfunctions in the inflamed gut and identify unique questions that could be addressed only by using the intestinal organoid platforms.
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Affiliation(s)
- Susana Lechuga
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Manuel B. Braga-Neto
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Diseases and Surgery Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Nayden G. Naydenov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Florian Rieder
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Diseases and Surgery Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
| | - Andrei I. Ivanov
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, OH, United States
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Roncaioli JL, Babirye JP, Chavez RA, Liu FL, Turcotte EA, Lee AY, Lesser CF, Vance RE. A hierarchy of cell death pathways confers layered resistance to shigellosis in mice. eLife 2023; 12:e83639. [PMID: 36645406 PMCID: PMC9876568 DOI: 10.7554/elife.83639] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 01/15/2023] [Indexed: 01/17/2023] Open
Abstract
Bacteria of the genus Shigella cause shigellosis, a severe gastrointestinal disease driven by bacterial colonization of colonic intestinal epithelial cells. Vertebrates have evolved programmed cell death pathways that sense invasive enteric pathogens and eliminate their intracellular niche. Previously we reported that genetic removal of one such pathway, the NAIP-NLRC4 inflammasome, is sufficient to convert mice from resistant to susceptible to oral Shigella flexneri challenge (Mitchell et al., 2020). Here, we investigate the protective role of additional cell death pathways during oral mouse Shigella infection. We find that the Caspase-11 inflammasome, which senses Shigella LPS, restricts Shigella colonization of the intestinal epithelium in the absence of NAIP-NLRC4. However, this protection is limited when Shigella expresses OspC3, an effector that antagonizes Caspase-11 activity. TNFα, a cytokine that activates Caspase-8-dependent apoptosis, also provides potent protection from Shigella colonization of the intestinal epithelium when mice lack both NAIP-NLRC4 and Caspase-11. The combined genetic removal of Caspases-1, -11, and -8 renders mice hyper-susceptible to oral Shigella infection. Our findings uncover a layered hierarchy of cell death pathways that limit the ability of an invasive gastrointestinal pathogen to cause disease.
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Affiliation(s)
- Justin L Roncaioli
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
| | - Janet Peace Babirye
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
| | - Roberto A Chavez
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
| | - Fitty L Liu
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
| | - Elizabeth A Turcotte
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
| | - Angus Y Lee
- Cancer Research Laboratory, University of California, BerkeleyBerkeleyUnited States
| | - Cammie F Lesser
- Department of Microbiology, Harvard Medical SchoolBostonUnited States
- Broad Institute of Harvard and MITCambridgeUnited States
- Department of Medicine, Division of Infectious Diseases, Massachusetts General HospitalBostonUnited States
| | - Russell E Vance
- Division of Immunology & Molecular Medicine, Department of Molecular & Cell Biology, University of California, BerkeleyBerkeleyUnited States
- Cancer Research Laboratory, University of California, BerkeleyBerkeleyUnited States
- Immunotherapeutics and Vaccine Research Initiative, University of California, BerkeleyBerkeleyUnited States
- Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
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9
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Zhou F, Chen L, Xu S, Si C, Li N, Dong H, Zheng P, Wang W. Upregulation of miR-151-5p promotes the apoptosis of intestinal epithelial cells by targeting brain-derived neurotrophic factor in ulcerative colitis mice. Cell Cycle 2022; 21:2615-2626. [PMID: 35938703 PMCID: PMC9704397 DOI: 10.1080/15384101.2022.2105905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 06/14/2022] [Accepted: 07/19/2022] [Indexed: 01/09/2023] Open
Abstract
Ulcerative colitis (UC) is the most prevalent form of chronic inflammatory bowel disease, the etiology of which is poorly understood. This study investigated the role of miR-151-5p on UC and explored the role of brain-derived neurotrophic factor (BDNF) in a UC mouse model and cell model. A UC mouse model was engineered by dextran sulfate sodium (DSS) induction. Primary mouse intestinal epithelial cells (IECs) were isolated. Colitis mice were intraperitoneally injected with miR-151-5p antagomir and antagomir negative control, and weight loss, disease activity index, and colon length of mice were measured. Colon tissues of mice were histologically analyzed. A UC cell model was constructed by treating MODE-K cells with DSS. miR-151-5p expression in the cell model was modulated by transfection. The exogenous BDNF effect on the UC cell model and intestinal cell apoptosis, viability and proliferation was detected by flow cytometry, CCK-8 and EdU experiment. The expression of miR-151-5p and apoptosis-related proteins was assessed through q-PCR and western blotting. miR-151-5p was upregulated in the colon tissues and primary IECs of colitis mice. miR-151-5p directly inhibited the expression of BNDF. miR-151-5p upregulation promoted apoptosis in UC MODE-K cells. miR-151-5p upregulation repressed the viability of UC MODE-K cells. Exogenous BNDF treatment reversed the effect of miR-151-5p on UC MODE-K cells. miR-151-5p knockdown improved UC symptoms in mice, including alleviating weight loss, reducing disease activity index and improving colon length and damaged colon tissues. miR-151-5p contributed to intestinal epithelial cells apoptosis in colitis mice via inhibiting BNDF expression.
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Affiliation(s)
- Feng Zhou
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Lipeng Chen
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Shan Xu
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Caijuan Si
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Nan Li
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Hui Dong
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Peifen Zheng
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Weifeng Wang
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
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10
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A'inurrofiqin M, Rahayu ES, Suroto DA, Utami T, Mayangsari Y. Safety assessment of the indigenous probiotic strain Lactiplantibacillus plantarum subsp. plantarum Kita-3 using Sprague-Dawley rats as a model. AIMS Microbiol 2022; 8:403-421. [PMID: 36694579 PMCID: PMC9834073 DOI: 10.3934/microbiol.2022028] [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: 07/17/2022] [Revised: 09/29/2022] [Accepted: 10/12/2022] [Indexed: 01/26/2023] Open
Abstract
Lactiplantibacillus plantarum subsp. plantarum Kita-3 is a candidate probiotic from Halloumi cheese produced by Mazaraat Artisan Cheese, Yogyakarta, Indonesia. This study evaluated the safety of consuming a high dose of L. plantarum subsp. plantarum Kita-3 in Sprague-Dawley rats for 28 days. Eighteen male rats were randomly divided into three groups, such as the control group, the skim milk group, and the probiotic group. Feed intake and body weight were monitored, and blood samples, organs (kidneys, spleen, and liver), and the colon were dissected. Organ weight, hematological parameters, serum glutamic oxaloacetic transaminase (SGOT), and serum glutamic pyruvic transaminase (SGPT) concentrations, as well as intestinal morphology of the rats, were measured. Microbial analyses were carried out on the digesta, feces, blood, organs, and colon. The results showed that consumption of L. plantarum did not negatively affect general health, organ weight, hematological parameters, SGOT and SGPT activities, or intestinal morphology. The number of L. plantarum in the feces of rats increased significantly, indicating survival of the bacterium in the gastrointestinal tract. The bacteria in the blood, organs, and colon of all groups were identified using repetitive-polymerase chain reaction with the BOXA1R primers and further by 16S rRNA gene sequencing analysis, which revealed that they were not identical to L. plantarum subsp. plantarum Kita-3. Thus, this strain did not translocate to the blood or organs of rats. Therefore, L. plantarum subsp. plantarum Kita-3 is likely to be safe for human consumption.
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Affiliation(s)
- Moh. A'inurrofiqin
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Endang Sutriswati Rahayu
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia,University Center of Excellence for Research and Application on Integrated Probiotic Industry, Universitas Gadjah Mada, Yogyakarta, Indonesia,* Correspondence: ; Tel: +628122690013
| | - Dian Anggraini Suroto
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia,University Center of Excellence for Research and Application on Integrated Probiotic Industry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Tyas Utami
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia,University Center of Excellence for Research and Application on Integrated Probiotic Industry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Yunika Mayangsari
- Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia
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11
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Gao Y, Chen H, Li W, Zhang Y, Luo J, Zhao L, Shi F, Ye G, He X, Xu Z, Zhu L, Tang H, Li Y. Chloroform extracts of Atractylodes chinensis inhibit the adhesion and invasion of Salmonella typhimurium. Biomed Pharmacother 2022; 154:113633. [PMID: 36063647 DOI: 10.1016/j.biopha.2022.113633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
There are 27 million cases of Salmonella Typhimurium (STM) reported worldwide annually, which have resulted in 217,000 deaths to date. Thus, there is an urgent requirement to develop novel antibacterial agents to target the multidrug-resistant strains of STM. We evaluated the inhibitory effect of the chloroform extracts of Atractylodes chinensis (Ac-CE) on the virulence of STM in vitro and develop it as a potential antibacterial agent. First, we determined the in vitro effects of Ac-CE on STM biofilm formation, and swimming, swarming, and adhesion to mucin. Further, we evaluated the effect of Ac-CE on the adhesion and invasion of STM at the gene level. Lastly, we evaluated the inhibitory effect of Ac-CE on STM infectivity at the cellular level. Ac-CE could attenuate both the adhesion and invasion abilities of STM in vitro. At the gene level, it could inhibit the expression of flagella, pilus, biofilm, SPI-1, and SPI-2 genes, which are related to the adhesion and invasion ability of STM in cells. Ac-CE significantly downregulated the expression of inflammatory cytokines and the TLR4/MyD88/NF-κB pathway in an STM infection cell model. It also significantly recovered the expression of intestinal barrier-related genes and proteins in intestinal cells that are damaged during STM infection. Ac-CE is effective as an antivirulence agent in alleviating STM infection. Although the main components of Ac-CE were analyzed.We have not demonstrated the antivirulence effect of the active ingredients in Ac-CE. And the antivirulence effect of Ac-CE and its active ingredients warrant further in vivo studies.
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Affiliation(s)
- Yuanze Gao
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Helin Chen
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Wen Li
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 610066, China
| | - Yu Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Jie Luo
- National Ethnic Affairs Commission Key Open Laboratory of Traditional Chinese Veterinary Medicine, Tongren Polytechnic College, Tongren 554300, Guizhou, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Fei Shi
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Gang Ye
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Xiaoli He
- College of Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China
| | - Huaqiao Tang
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China.
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, Sichuan, China.
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12
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Chen HM, MacDonald JA. Death-associated protein kinases and intestinal epithelial homeostasis. Anat Rec (Hoboken) 2022; 306:1062-1087. [PMID: 35735750 DOI: 10.1002/ar.25022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/12/2022] [Accepted: 06/06/2022] [Indexed: 12/15/2022]
Abstract
The family of death-associated protein kinases (DAPKs) and DAPK-related apoptosis-inducing protein kinases (DRAKs) act as molecular switches for a multitude of cellular processes, including apoptotic and autophagic cell death events. This review summarizes the mechanisms for kinase activity regulation and discusses recent molecular investigations of DAPK and DRAK family members in the intestinal epithelium. In general, recent literature convincingly supports the importance of this family of protein kinases in the homeostatic processes that govern the proper function of the intestinal epithelium. Each of the DAPK family of proteins possesses distinct biochemical properties, and we compare similarities in the information available as well as those cases where functional distinctions are apparent. As the prototypical member of the family, DAPK1 is noteworthy for its tumor suppressor function and association with colorectal cancer. In the intestinal epithelium, DAPK2 is associated with programmed cell death, potential tumor-suppressive functions, and a unique influence on granulocyte biology. The impact of the DRAKs in the epithelium is understudied, but recent studies support a role for DRAK1 in inflammation-mediated tumor growth and metastasis. A commentary is provided on the potential importance of DAPK3 in facilitating epithelial restitution and wound healing during the resolution of colitis. An update on efforts to develop selective pharmacologic effectors of individual DAPK members is also supplied.
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Affiliation(s)
- Huey-Miin Chen
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Justin A MacDonald
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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13
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Ma S, Zhang J, Liu H, Li S, Wang Q. The Role of Tissue-Resident Macrophages in the Development and Treatment of Inflammatory Bowel Disease. Front Cell Dev Biol 2022; 10:896591. [PMID: 35721513 PMCID: PMC9199005 DOI: 10.3389/fcell.2022.896591] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Inflammatory bowel disease (IBD), comprising Crohn’s disease and ulcerative colitis, is a refractory disease with many immune abnormalities and pathologies in the gastrointestinal tract. Because macrophages can distinguish innocuous antigens from potential pathogens to maintain mucosa barrier functions, they are essential cells in the intestinal immune system. With numerous numbers in the intestinal tract, tissue-resident macrophages have a significant effect on the constant regeneration of intestinal epithelial cells and maintaining the immune homeostasis of the intestinal mucosa. They also have a significant influence on IBD through regulating pro-(M1) or anti-inflammatory (M2) phenotype polarization according to different environmental cues. The disequilibrium of the phenotypes and functions of macrophages, disturbed by intracellular or extracellular stimuli, influences the progression of disease. Further investigation of macrophages’ role in the progression of IBD will facilitate deciphering the pathogenesis of disease and exploring novel targets to develop novel medications. In this review, we shed light on the origin and maintenance of intestinal macrophages, as well as the role of macrophages in the occurrence and development of IBD. In addition, we summarize the interaction between gut microbiota and intestinal macrophages, and the role of the macrophage-derived exosome. Furthermore, we discuss the molecular and cellular mechanisms participating in the polarization and functions of gut macrophages, the potential targeted strategies, and current clinical trials for IBD.
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Affiliation(s)
- Shengjie Ma
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Chang Chun, China
| | - Jiaxin Zhang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Chang Chun, China
| | - Heshi Liu
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Chang Chun, China
| | - Shuang Li
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Chang Chun, China
| | - Quan Wang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Chang Chun, China
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14
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Wang G, Yuan J, Luo J, Ocansey DKW, Zhang X, Qian H, Xu W, Mao F. Emerging role of protein modification in inflammatory bowel disease. J Zhejiang Univ Sci B 2022; 23:173-188. [PMID: 35261214 DOI: 10.1631/jzus.b2100114] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The onset of inflammatory bowel disease (IBD) involves many factors, including environmental parameters, microorganisms, and the immune system. Although research on IBD continues to expand, the specific pathogenesis mechanism is still unclear. Protein modification refers to chemical modification after protein biosynthesis, also known as post-translational modification (PTM), which causes changes in the properties and functions of proteins. Since proteins can be modified in different ways, such as acetylation, methylation, and phosphorylation, the functions of proteins in different modified states will also be different. Transitions between different states of protein or changes in modification sites can regulate protein properties and functions. Such modifications like neddylation, sumoylation, glycosylation, and acetylation can activate or inhibit various signaling pathways (e.g., nuclear factor-κB (NF-κB), extracellular signal-regulated kinase (ERK), and protein kinase B (AKT)) by changing the intestinal flora, regulating immune cells, modulating the release of cytokines such as interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ), and ultimately leading to the maintenance of the stability of the intestinal epithelial barrier. In this review, we focus on the current understanding of PTM and describe its regulatory role in the pathogenesis of IBD.
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Affiliation(s)
- Gaoying Wang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China.,Clinical Laboratory, Wuxi Maternal and Child Health Hospital Affiliated to Nanjing Medical University, Wuxi 214002, China
| | - Jintao Yuan
- Clinical Laboratory, the People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang 212300, China
| | - Ji Luo
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Dickson Kofi Wiredu Ocansey
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China.,Directorate of University Health Services, University of Cape Coast, Cape Coast 02630, Ghana
| | - Xu Zhang
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Hui Qian
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Wenrong Xu
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Fei Mao
- Key Laboratory of Medical Science and Laboratory Medicine of Jiangsu Province, School of Medicine, Jiangsu University, Zhenjiang 212013, China.
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15
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Zhang Z, Liu S, Huang J, Cui Y, Liu Y, Zhou Y, Zhu Z. Phloretin is protective in a murine salmonella enterica serovar typhimurium infection model. Microb Pathog 2021; 161:105298. [PMID: 34801645 DOI: 10.1016/j.micpath.2021.105298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/14/2021] [Accepted: 11/14/2021] [Indexed: 11/28/2022]
Abstract
Salmonella, an important zoonotic pathogen, causes significant morbidity and mortality in both humans and animals. Phloretin mainly isolated from strawberries and apples has the effects of treating inflammation and pathogenic bacteria, but its protective efficacy and mechanism of action against Salmonella spp. are less clear. In this study, we found that phloretin alleviated body weight loss, colon length shortening, and colonic pathological damage caused by S. Typhimurium. Phloretin also decreased S. Typhimurium translocation to the mesenteric lymph nodes (MLN) and spleen. Further mechanism studies showed that phloretin significantly inhibited inflammation and oxidative stress levels in the colonic tissue. Phloretin also prevented S. Typhimurium-mediated impairment in the colon epithelium barrier by the regulation ZO-1 and occludin levels. Interestingly, phloretin did not inhibit S. typhimurium growth in vitro, but reduced the internalization of S. Typhimurium into Caco-2 cells. Taken together, these findings indicated that phloretin may be a new dietary strategy to combat the disease.
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Affiliation(s)
- Zecai Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, 163319, China; Heilongjiang Province Cultivating Collaborative Innovation Center for the Beidahuang Modern Agricultural Industry Technology, Daqing, 163319, China
| | - Siyu Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China
| | - Jiang Huang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China
| | - Yueqi Cui
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China
| | - Yu Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, 163319, China; Heilongjiang Province Cultivating Collaborative Innovation Center for the Beidahuang Modern Agricultural Industry Technology, Daqing, 163319, China
| | - Yulong Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, 163319, China; Heilongjiang Province Cultivating Collaborative Innovation Center for the Beidahuang Modern Agricultural Industry Technology, Daqing, 163319, China
| | - Zhanbo Zhu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, Daqing, 163319, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, Daqing, 163319, China; Heilongjiang Province Cultivating Collaborative Innovation Center for the Beidahuang Modern Agricultural Industry Technology, Daqing, 163319, China.
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16
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Kühn F, Duan R, Ilmer M, Wirth U, Adiliaghdam F, Schiergens TS, Andrassy J, Bazhin AV, Werner J. Targeting the Intestinal Barrier to Prevent Gut-Derived Inflammation and Disease: A Role for Intestinal Alkaline Phosphatase. Visc Med 2021; 37:383-393. [PMID: 34722721 DOI: 10.1159/000515910] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/16/2021] [Indexed: 02/02/2023] Open
Abstract
Background Intestinal alkaline phosphatase (IAP) as a tissue-specific isozyme of alkaline phosphatases is predominantly produced by enterocytes in the proximal small intestine. In recent years, an increasing number of pathologies have been identified to be associated with an IAP deficiency, making it very worthwhile to review the various roles, biological functions, and potential therapeutic aspects of IAP. Summary IAP primarily originates and acts in the intestinal tract but affects other organs through specific biological axes related to its fundamental roles such as promoting gut barrier function, dephosphorylation/detoxification of lipopolysaccharides (LPS), and regulation of gut microbiota. Key Messages Numerous studies reporting on the different roles and the potential therapeutic value of IAP across species have been published during the last decade. While IAP deficiency is linked to varying degrees of physiological dysfunctions across multiple organ systems, the supplementation of IAP has been proven to be beneficial in several translational and clinical studies. The increasing evidence of the salutary functions of IAP underlines the significance of the naturally occurring brush border enzyme.
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Affiliation(s)
- Florian Kühn
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Ruifeng Duan
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Matthias Ilmer
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Ulrich Wirth
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Fatemeh Adiliaghdam
- Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Tobias S Schiergens
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Joachim Andrassy
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Alexandr V Bazhin
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
| | - Jens Werner
- Department of General, Visceral and Transplant Surgery, University Hospital of LMU Munich, Munich, Germany
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17
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Jergens AE, Parvinroo S, Kopper J, Wannemuehler MJ. Rules of Engagement: Epithelial-Microbe Interactions and Inflammatory Bowel Disease. Front Med (Lausanne) 2021; 8:669913. [PMID: 34513862 PMCID: PMC8432614 DOI: 10.3389/fmed.2021.669913] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 08/05/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel diseases (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), are complex, multifactorial disorders that lead to chronic and relapsing intestinal inflammation. The exact etiology remains unknown, however multiple factors including the environment, genetic, dietary, mucosal immunity, and altered microbiome structure and function play important roles in disease onset and progression. Supporting this notion that the gut microbiota plays a pivotal role in IBD pathogenesis, studies in gnotobiotic mice have shown that mouse models of intestinal inflammation require a microbial community to develop colitis. Additionally, antimicrobial therapy in some IBD patients will temporarily induce remission further demonstrating an association between gut microbes and intestinal inflammation. Finally, a dysfunctional intestinal epithelial barrier is also recognized as a key pathogenic factor in IBD. The intestinal epithelium serves as a barrier between the luminal environment and the mucosal immune system and guards against harmful molecules and microorganisms while being permeable to essential nutrients and solutes. Beneficial (i.e., mutualists) bacteria promote mucosal health by strengthening barrier integrity, increasing local defenses (mucin and IgA production) and inhibiting pro-inflammatory immune responses and apoptosis to promote mucosal homeostasis. In contrast, pathogenic bacteria and pathobionts suppress expression and localization of tight junction proteins, cause dysregulation of apoptosis/proliferation and increase pro-inflammatory signaling that directly damages the intestinal mucosa. This review article will focus on the role of intestinal epithelial cells (IECs) and the luminal environment acting as mediators of barrier function in IBD. We will also share some of our translational observations of interactions between IECs, immune cells, and environmental factors contributing to maintenance of mucosal homeostasis, as it relates to GI inflammation and IBD in different animal models.
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Affiliation(s)
- Albert E. Jergens
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Shadi Parvinroo
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Jamie Kopper
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Michael J. Wannemuehler
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
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18
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Vomhof-DeKrey EE, Stover A, Basson MD. Microbiome diversity declines while distinct expansions of Th17, iNKT, and dendritic cell subpopulations emerge after anastomosis surgery. Gut Pathog 2021; 13:51. [PMID: 34376235 PMCID: PMC8353768 DOI: 10.1186/s13099-021-00447-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/30/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Anastomotic failure causes morbidity and mortality even in technically correct anastomoses. Initial leaks must be prevented by mucosal reapproximation across the anastomosis. Healing is a concerted effort between intestinal epithelial cells (IECs), immune cells, and commensal bacteria. IEC TLR4 activation and signaling is required for mucosal healing, leading to inflammatory factor release that recruits immune cells to limit bacteria invasion. TLR4 absence leads to mucosal damage from loss in epithelial proliferation, attenuated inflammatory response, and bacteria translocation. We hypothesize after anastomosis, an imbalance in microbiota will occur due to a decrease in TLR4 expression and will lead to changes in the immune milieu. RESULTS We isolated fecal content and small intestinal leukocytes from murine, Roux-en-Y and end-to-end anastomoses, to identify microbiome changes and subsequent alterations in the regulatory and pro-inflammatory immune cells 3 days post-operative. TLR4+ IECs were impaired after anastomosis. Microbiome diversity was reduced, with Firmicutes, Bacteroidetes, and Saccharibacteria decreased and Proteobacteria increased. A distinct TCRβhi CD4+ T cells subset after anastomosis was 10-20-fold greater than in control mice. 84% were Th17 IL-17A/F+ IL-22+ and/or TNFα+. iNKT cells were increased and TCRβhi. 75% were iNKT IL-10+ and 13% iNKTh17 IL-22+. Additionally, Treg IL-10+ and IL-22+ cells were increased. A novel dendritic cell subset was identified in anastomotic regions that was CD11bhi CD103mid and was 93% IL-10+. CONCLUSIONS This anastomotic study demonstrated a decrease in IEC TLR4 expression and microbiome diversity which then coincided with increased expansion of regulatory and pro-inflammatory immune cells and cytokines. Defining the anastomotic mucosal environment could help inform innovative therapeutics to target excessive pro-inflammatory invasion and microbiome imbalance.
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Affiliation(s)
- Emilie E. Vomhof-DeKrey
- Department of Surgery, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
- Department of Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
| | - Allie Stover
- Department of Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
| | - Marc D. Basson
- Department of Surgery, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
- Department of Biomedical Sciences, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
- Department of Pathology, University of North Dakota School of Medicine and the Health Sciences, 1301 North Columbia Road, Stop 9037, Grand Forks, ND 58202 USA
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19
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Mashukova A, Forteza R, Shah VN, Salas PJ. The cell polarity kinase Par1b/MARK2 activation selects specific NF-kB transcripts via phosphorylation of core mediator Med17/TRAP80. Mol Biol Cell 2021; 32:690-702. [PMID: 33596087 PMCID: PMC8108508 DOI: 10.1091/mbc.e20-10-0646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Par1b/MARK2 is a Ser/Thr kinase with pleiotropic effects that participates in the generation of apico-basal polarity in Caenorhabditis elegans. It is phosphorylated by atypical PKC(ι/λ) in Thr595 and inhibited. Because previous work showed a decrease in atypical protein kinase C (aPKC) activity under proinflammatory conditions, we analyzed the hypothesis that the resulting decrease in Thr595-MARK2 with increased kinase activity may also participate in innate immunity. We confirmed that pT595-MARK2 was decreased under inflammatory stimulation. The increase in MARK2 activity was verified by Par3 delocalization and rescue with a specific inhibitor. MARK2 overexpression significantly enhanced the transcriptional activity of NF-kB for a subset of transcripts. It also resulted in phosphorylation of a single band (∼Mr 80,000) coimmunoprecipitating with RelA, identified as Med17. In vitro phosphorylation showed direct phosphorylation of Med17 in Ser152 by recombinant MARK2. Expression of S152D-Med17 mimicked the effect of MARK2 activation on downstream transcriptional regulation, which was antagonized by S152A-Med17. The decrease in pThr595 phosphorylation was validated in aPKC-deficient mouse jejunal mucosae. The transcriptional effects were confirmed in transcriptome analysis and transcript enrichment determinations in cells expressing S152D-Med17. We conclude that theMARK2-Med17 axis represents a novel form of cross-talk between polarity signaling and transcriptional regulation including, but not restricted to, innate immunity responses.
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Affiliation(s)
- Anastasia Mashukova
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136.,Department of Medical Education, Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL 33314
| | - Radia Forteza
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Viraj N Shah
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Pedro J Salas
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136
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20
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Sanman LE, Chen IW, Bieber JM, Steri V, Trentesaux C, Hann B, Klein OD, Wu LF, Altschuler SJ. Transit-Amplifying Cells Coordinate Changes in Intestinal Epithelial Cell-Type Composition. Dev Cell 2021; 56:356-365.e9. [PMID: 33484640 PMCID: PMC7917018 DOI: 10.1016/j.devcel.2020.12.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 11/09/2020] [Accepted: 12/29/2020] [Indexed: 12/12/2022]
Abstract
Renewing tissues have the remarkable ability to continually produce both proliferative progenitor and specialized differentiated cell types. How are complex milieus of microenvironmental signals interpreted to coordinate tissue-cell-type composition? Here, we investigate the responses of intestinal epithelium to individual and paired perturbations across eight epithelial signaling pathways. Using a high-throughput approach that combines enteroid monolayers and quantitative imaging, we identified conditions that enrich for specific cell types as well as interactions between pathways. Importantly, we found that modulation of transit-amplifying cell proliferation changes the ratio of differentiated secretory to absorptive cell types. These observations highlight an underappreciated role for transit-amplifying cells in the tuning of differentiated cell-type composition.
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Affiliation(s)
- Laura E Sanman
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ina W Chen
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jake M Bieber
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158, USA; Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, San Francisco, CA 94158, USA
| | - Veronica Steri
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA; Preclinical Therapeutics Core, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Coralie Trentesaux
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Byron Hann
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA; Preclinical Therapeutics Core, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Lani F Wu
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158, USA.
| | - Steven J Altschuler
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158, USA.
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21
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Epithelium-autonomous NAIP/NLRC4 prevents TNF-driven inflammatory destruction of the gut epithelial barrier in Salmonella-infected mice. Mucosal Immunol 2021; 14:615-629. [PMID: 33731826 PMCID: PMC8075861 DOI: 10.1038/s41385-021-00381-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/26/2020] [Accepted: 01/19/2021] [Indexed: 02/04/2023]
Abstract
The gut epithelium is a critical protective barrier. Its NAIP/NLRC4 inflammasome senses infection by Gram-negative bacteria, including Salmonella Typhimurium (S.Tm) and promotes expulsion of infected enterocytes. During the first ~12-24 h, this reduces mucosal S.Tm loads at the price of moderate enteropathy. It remained unknown how this NAIP/NLRC4-dependent tradeoff would develop during subsequent infection stages. In NAIP/NLRC4-deficient mice, S.Tm elicited severe enteropathy within 72 h, characterized by elevated mucosal TNF (>20 pg/mg) production from bone marrow-derived cells, reduced regeneration, excessive enterocyte loss, and a collapse of the epithelial barrier. TNF-depleting antibodies prevented this destructive pathology. In hosts proficient for epithelial NAIP/NLRC4, a heterogeneous enterocyte death response with both apoptotic and pyroptotic features kept S.Tm loads persistently in check, thereby preventing this dire outcome altogether. Our results demonstrate that immediate and selective removal of infected enterocytes, by locally acting epithelium-autonomous NAIP/NLRC4, is required to avoid a TNF-driven inflammatory hyper-reaction that otherwise destroys the epithelial barrier.
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Poletti M, Arnauts K, Ferrante M, Korcsmaros T. Organoid-based Models to Study the Role of Host-microbiota Interactions in IBD. J Crohns Colitis 2020; 15:1222-1235. [PMID: 33341879 PMCID: PMC8256633 DOI: 10.1093/ecco-jcc/jjaa257] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The gut microbiota appears to play a central role in health, and alterations in the gut microbiota are observed in both forms of inflammatory bowel disease [IBD], namely Crohn's disease and ulcerative colitis. Yet, the mechanisms behind host-microbiota interactions in IBD, especially at the intestinal epithelial cell level, are not yet fully understood. Dissecting the role of host-microbiota interactions in disease onset and progression is pivotal, and requires representative models mimicking the gastrointestinal ecosystem, including the intestinal epithelium, the gut microbiota, and immune cells. New advancements in organoid microfluidics technology are facilitating the study of IBD-related microbial-epithelial cross-talk, and the discovery of novel microbial therapies. Here, we review different organoid-based ex vivo models that are currently available, and benchmark their suitability and limitations for specific research questions. Organoid applications, such as patient-derived organoid biobanks for microbial screening and 'omics technologies, are discussed, highlighting their potential to gain better mechanistic insights into disease mechanisms and eventually allow personalised medicine.
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Affiliation(s)
- Martina Poletti
- Earlham Institute, Norwich Research Park, Norwich, UK,Quadram Institute, Norwich Research Park, Norwich, UK
| | - Kaline Arnauts
- Department of Chronic Diseases, Metabolism and Ageing [CHROMETA], Translational Research Center for Gastrointestinal Disorders [TARGID], KU Leuven, Leuven, Belgium,Department of Development and Regeneration, Stem Cell Institute Leuven [SCIL], KU Leuven, Leuven, Belgium
| | - Marc Ferrante
- Department of Chronic Diseases, Metabolism and Ageing [CHROMETA], Translational Research Center for Gastrointestinal Disorders [TARGID], KU Leuven, Leuven, Belgium,Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium,Corresponding author: Marc Ferrante, MD, PhD, Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Herestraat 49, 3000 Leuven, Belgium. Tel.: +32 16 344225;
| | - Tamas Korcsmaros
- Earlham Institute, Norwich Research Park, Norwich, UK,Quadram Institute, Norwich Research Park, Norwich, UK
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23
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Frick A, Khare V, Jimenez K, Dammann K, Lang M, Krnjic A, Gmainer C, Baumgartner M, Mesteri I, Gasche C. A Novel PAK1-Notch1 Axis Regulates Crypt Homeostasis in Intestinal Inflammation. Cell Mol Gastroenterol Hepatol 2020; 11:892-907.e1. [PMID: 33189893 PMCID: PMC7900837 DOI: 10.1016/j.jcmgh.2020.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS p21-activated kinase-1 (PAK1) belongs to a family of serine-threonine kinases and contributes to cellular pathways such as nuclear factor-κB (NF-κB), mitogen-activated protein kinase (MAPK), phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT), and Wingless-related integration site(Wnt)/β-catenin, all of which are involved in intestinal homeostasis. Overexpression of PAK1 is linked to inflammatory bowel disease as well as colitis-associated cancer (CAC), and similarly was observed in interleukin (IL)10 knockout (KO) mice, a model of colitis and CAC. Here, we tested the effects of PAK1 deletion on intestinal inflammation and carcinogenesis in IL10 KO mice. METHODS IL10/PAK1 double-knockout (DKO) mice were generated and development of colitis and CAC was analyzed. Large intestines were measured and prepared for histology or RNA isolation. Swiss rolls were stained with H&E and periodic acid-Schiff. Co-immunoprecipitation and immunofluorescence were performed using intestinal organoids, SW480, and normal human colon epithelial cells 1CT. RESULTS When compared with IL10 KO mice, DKOs showed longer colons and prolonged crypts, despite having higher inflammation and numbers of dysplasia. Crypt hyperproliferation was associated with Notch1 activation and diminished crypt differentiation, indicated by a reduction of goblet cells. Gene expression analysis indicated up-regulation of the Notch1 target hairy and enhancer of split-1 and the stem cell receptor leucin-rich repeat-containing G-protein-coupled receptor 5 in DKO mice. Interestingly, the stem cell marker olfactomedin-4 was present in colonic tissue. Increased β-catenin messenger RNA and cytoplasmic accumulation indicated aberrant Wnt signaling. Co-localization and direct interaction of Notch1 and PAK1 was found in colon epithelial cells. Notch1 activation abrogated this effect whereas silencing of PAK1 led to Notch1 activation. CONCLUSIONS PAK1 contributes to the regulation of crypt homeostasis under inflammatory conditions by controlling Notch1. This identifies a novel PAK1-Notch1 axis in intestinal pathophysiology of inflammatory bowel disease and CAC.
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Affiliation(s)
- Adrian Frick
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Vineeta Khare
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Kristine Jimenez
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Kyle Dammann
- Department of Surgery, Saint Luke's University Hospital Bethlehem, Bethlehem, Pennsylvania
| | - Michaela Lang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Anita Krnjic
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Christina Gmainer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Maximilian Baumgartner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | | | - Christoph Gasche
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria.
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Escudero-Hernández C. Epithelial cell dysfunction in coeliac disease. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 358:133-164. [PMID: 33707053 DOI: 10.1016/bs.ircmb.2020.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The intestinal epithelium limits host-luminal interactions and maintains gut homeostasis. Breakdown of the epithelial barrier and villous atrophy are hallmarks of coeliac disease. Besides the well characterized immune-mediated epithelial damage induced in coeliac mucosa, constitutional changes and early gluten direct effects disturb intestinal epithelial cells. The subsequent modifications in key epithelial signaling pathways leads to outnumbered immature epithelial cells that, in turn, facilitate epithelial dysfunction, promote crypt hyperplasia, and increase intestinal permeability. Consequently, underlying immune cells have a greater access to gluten, which boosts the proinflammatory immune response against gluten and positively feedback the epithelial damage loop. Gluten-free diet is an indispensable treatment for coeliac disease patients, but additional therapies are under development, including those that reinforce intestinal epithelial healing. In this chapter, we provide an overview of intestinal epithelial cell disturbances that develop during gluten intake in coeliac disease mucosa.
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25
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Kwon O, Han TS, Son MY. Intestinal Morphogenesis in Development, Regeneration, and Disease: The Potential Utility of Intestinal Organoids for Studying Compartmentalization of the Crypt-Villus Structure. Front Cell Dev Biol 2020; 8:593969. [PMID: 33195268 PMCID: PMC7644937 DOI: 10.3389/fcell.2020.593969] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 10/05/2020] [Indexed: 12/19/2022] Open
Abstract
The morphology and structure of the intestinal epithelium are rearranged dynamically during development, tissue regeneration, and disease progression. The most important characteristic of intestinal epithelial morphogenesis is the repetitive compartmentalized structures of crypt-villus units, which are crucial for maintaining intestinal homeostasis and functions. Abnormal structures are known to be closely associated with disease development and progression. Therefore, understanding how intestinal crypt-villus structures are formed and grown is essential for elucidating the physiological and pathophysiological roles of the intestinal epithelium. However, a critical knowledge gap in understanding the compartmentalization of the crypt-villus axis remains when using animal models, due to obvious inter-species differences and difficulty in real-time monitoring. Recently, emerging technologies such as organoid culture, lineage tracing, and single cell sequencing have enabled the assessment of the intrinsic mechanisms of intestinal epithelial morphogenesis. In this review, we discuss the latest research on the regulatory factors and signaling pathways that play a central role in the formation, maintenance, and regeneration of crypt-villus structures in the intestinal epithelium. Furthermore, we discuss how these factors and pathways play a role in development, tissue regeneration, and disease. We further explore how the current technology of three-dimensional intestinal organoids has contributed to the understanding of crypt-villus compartmentalization, highlighting new findings related to the self-organizing-process-driven initiation and propagation of crypt-villus structures. We also discuss intestinal diseases featuring abnormalities of the crypt-villus structure to provide insights for the development of novel therapeutic strategies targeting intestinal morphogenesis and crypt-villus formation.
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Affiliation(s)
- Ohman Kwon
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Tae-Su Han
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Mi-Young Son
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
- KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, South Korea
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26
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Cao X, Sun L, Lechuga S, Naydenov NG, Feygin A, Ivanov AI. A Novel Pharmacological Approach to Enhance the Integrity and Accelerate Restitution of the Intestinal Epithelial Barrier. Inflamm Bowel Dis 2020; 26:1340-1352. [PMID: 32266946 PMCID: PMC7441106 DOI: 10.1093/ibd/izaa063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Disruption of the gut barrier is an essential mechanism of inflammatory bowel diseases (IBDs) contributing to the development of mucosal inflammation. A hallmark of barrier disruption is the disassembly of epithelial adherens junctions (AJs) driven by decreased expression of a major AJ protein, E-cadherin. A group of isoxazole compounds, such as E-cadherin-upregulator (ECU) and ML327, were previously shown to stimulate E-cadherin expression in poorly differentiated human cancer cells. This study was designed to examine whether these isoxazole compounds can enhance and protect model intestinal epithelial barriers in vitro. METHODS The study was conducted using T84, SK-CO15, and HT-29 human colonic epithelial cell monolayers. Disruption of the epithelial barrier was induced by pro-inflammatory cytokines, tumor necrosis factor-α, and interferon-γ. Barrier integrity and epithelial junction assembly was examined using different permeability assays, immunofluorescence labeling, and confocal microscopy. Epithelial restitution was analyzed using a scratch wound healing assay. RESULTS E-cadherin-upregulator and ML327 treatment of intestinal epithelial cell monolayers resulted in several barrier-protective effects, including reduced steady-state epithelial permeability, inhibition of cytokine-induced barrier disruption and junction disassembly, and acceleration of epithelial wound healing. Surprisingly, these effects were not due to upregulation of E-cadherin expression but were mediated by multiple mechanisms including inhibition of junction protein endocytosis, attenuation of cytokine-induced apoptosis, and activation of promigratory Src and AKT signaling. CONCLUSIONS Our data highlight ECU and ML327 as promising compounds for developing new therapeutic strategies to protect the integrity and accelerate the restitution of the intestinal epithelial barrier in IBD and other inflammatory disorders.
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Affiliation(s)
- Xuelei Cao
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Lei Sun
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Susana Lechuga
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Nayden G Naydenov
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Alex Feygin
- School of Nursing, Virginia Commonwealth University, Richmond, VA
| | - Andrei I Ivanov
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH,Address correspondence to: Andrei I. Ivanov, PhD, Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, NC22, Cleveland, OH 44195, USA. E-mail:
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27
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Chaari A, Bendriss G, Zakaria D, McVeigh C. Importance of Dietary Changes During the Coronavirus Pandemic: How to Upgrade Your Immune Response. Front Public Health 2020; 8:476. [PMID: 32984253 PMCID: PMC7481450 DOI: 10.3389/fpubh.2020.00476] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/27/2020] [Indexed: 12/15/2022] Open
Abstract
The new coronavirus pandemic continues to spread causing further public health, social, and economic issues. The disparities in the rates of death between countries poses questions about the importance of lifestyle habits and the immune status of populations. An exploration of dietary habits and COVID-19-related death might unravel associations between these two variables. Indeed, while both nutritional excess and deficiency are associated with immunodeficiency, adequate nutrition leading to an optimally functioning immune system may be associated with better outcomes with regards to preventing infection and complications of COVID-19, as well as developing a better immune response to other pathogenic viruses and microorganisms. This article outlines the key functions of the immune system and how macronutrients, micronutrients, and metabolites from the gut microbiome can be essential in the development of an efficient immune system. In addition, the effects of intermittent fasting on the inflammatory state as well as metabolic parameters will be discussed.
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Affiliation(s)
- Ali Chaari
- Premedical Department, Weill Cornell Medicine, Qatar Foundation, Education City, Doha, Qatar
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28
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Mahmoud SAM, Latif MKA, Dahmoush HM, Hussein EA. Diagnostic accuracy of colposcopic examination in patients with oral dysplastic lesions. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:692-699. [PMID: 32981873 DOI: 10.1016/j.oooo.2020.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/08/2020] [Accepted: 08/16/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Colposcopy is a direct microscopic method and is the gold standard tool to detect early cervical dysplastic lesions. In the past, many attempts have been made to use gynecologic methods to examine the oral mucosa. The aim of this study was to detect the diagnostic accuracy of oral colposcopy in diagnosing oral dysplastic lesions in comparison with microscopic evaluation based on biopsy and compare Reid's Colposcopic Index (RCI) and the Swede scoring system in diagnosing oral dysplastic lesions. STUDY DESIGN Twenty-five patients who presented for diagnosis of oral leukoplakia to the Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University (Cairo, Egypt) and met the selection criteria were recruited in this study. Each patient was subjected to colposcopic examination, followed by biopsy to confirm the results of colposcopy. The sensitivity and specificity of oral colposcopy were calculated after colposcopic assessment by using the Swede scoring system and the RCI. RESULTS The diagnostic accuracy of oral colposcopy with use of the Swede scoring system was superior to that of oral colposcopy with the use of the RCI. CONCLUSIONS Colposcopic examination using the Swede scoring system is very specific for diagnosing oral epithelial dysplasia and for using the "see-and-treat" method, whereas the RCI is a very sensitive screening method for the diagnosis of oral epithelial dysplasia in oral potentially malignant disorders.
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Affiliation(s)
- Sarah Ahmed Mohamed Mahmoud
- Assistant Lecturer of Oral & Maxillo-facial Pathology Department, Faculty of Dentistry, Cairo University, Cairo, Egypt.
| | | | - Heba Mahmoud Dahmoush
- Professor of Oral & Maxillofacial Pathology Department, Faculty of Dentistry, Cairo University
| | - Eman Aly Hussein
- Assistant Professor of Gynecology, Faculty of Medicine, Cairo University
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29
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Fredericks J, Senapati S, Wannemuehler MJ. Cytotoxic effects of manganese oxide nanoparticles in combination with microbial components on intestinal epithelial cells. F1000Res 2020. [DOI: 10.12688/f1000research.25238.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Manganese oxide has been shown to cause toxicity and is associated with occupational-related disease (e.g., welders). With the goal to improve several biomedical areas, manganese oxide nanoparticles (MnO NP) are being considered for use in drug delivery and magnetic resonance imaging (MRI) to obtain high resolution anatomical images of tumors and gastrointestinal (GI) inflammation. Regardless of whether it is intentional or unintentional ingestion, the GI tract has been shown to be the primary route of entry for metal nanoparticles including MnO NP. However, studies assessing toxicity of MnO NP for intestinal epithelial cells (IECs) are virtually nonexistent. Methods: Given the proximity to the GI lumen, assessing the effects of nanoparticles on IECs in the presence of bacterial components presents a more holistic model of exposure. Therefore, we examined the effects of MnO NP alone and MnO NP in combination with Escherichia coli LF82 bacterial lysate on selected functions of MODE-K cells, a murine intestinal epithelial cell line. Data were analyzed using one-way ANOVA. Differences with p < 0.05 were considered significant. Results: Results showed MnO NP plus E. coli LF82 lysate added to MODE-K cells severely inhibited monolayer scratch wound healing, enhanced the secretion of interleukin 6 (IL-6), and induced mitochondrial dysfunction. Conclusions: Overall, our findings show that toxicity of MnO NP deleteriously affected MODE-K cells and demonstrated the necessity to integrate other environmental factors, such as microbial components and/or inflammatory cytokines, into studies assessing effects of nanoparticles on mucosal epithelia.
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Hsu CY, Fu SH, Chien MW, Liu YW, Chen SJ, Sytwu HK. Post-Translational Modifications of Transcription Factors Harnessing the Etiology and Pathophysiology in Colonic Diseases. Int J Mol Sci 2020; 21:ijms21093207. [PMID: 32369982 PMCID: PMC7246881 DOI: 10.3390/ijms21093207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/23/2020] [Accepted: 04/30/2020] [Indexed: 02/06/2023] Open
Abstract
Defects in mucosal immune balance can lead to colonic diseases such as inflammatory bowel diseases and colorectal cancer. With the advancement of understanding for the immunological and molecular basis of colonic disease, therapies targeting transcription factors have become a potential approach for the treatment of colonic disease. To date, the biomedical significance of unique post-translational modifications on transcription factors has been identified, including phosphorylation, methylation, acetylation, ubiquitination, SUMOylation, and O-GlcNAcylation. This review focuses on our current understanding and the emerging evidence of how post-translational regulations modify transcription factors involved in the etiology and pathophysiology of colonic disease as well as the implications of these findings for new therapeutic approaches in these disorders.
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Affiliation(s)
- Chao-Yuan Hsu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, No.35, Keyan Road, Zhunan, Miaoli 350, Taiwan; (C.-Y.H.); (S.-H.F.)
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan; (M.-W.C.); (S.-J.C.)
| | - Shin-Huei Fu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, No.35, Keyan Road, Zhunan, Miaoli 350, Taiwan; (C.-Y.H.); (S.-H.F.)
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan; (M.-W.C.); (S.-J.C.)
| | - Ming-Wei Chien
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan; (M.-W.C.); (S.-J.C.)
| | - Yu-Wen Liu
- Graduate Institute of Life Sciences, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan;
- Molecular Cell Biology, Taiwan International Graduate Program, No.128, Academia Road, Section 2, Nankang, Taipei 115, Taiwan
| | - Shyi-Jou Chen
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan; (M.-W.C.); (S.-J.C.)
- Department of Pediatrics, Tri-Service General Hospital, National Defense Medical Center, No. 325, Section 2, Chenggong Rd., Neihu District, Taipei 114, Taiwan
| | - Huey-Kang Sytwu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, No.35, Keyan Road, Zhunan, Miaoli 350, Taiwan; (C.-Y.H.); (S.-H.F.)
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan; (M.-W.C.); (S.-J.C.)
- Graduate Institute of Life Sciences, National Defense Medical Center, No.161, Section 6, Min Chuan East Road, Neihu, Taipei 114, Taiwan;
- Correspondence: ; Tel.: +886-2-8792-3100 (ext. 18539); Fax: +886-2-8792-1774
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Abstract
Recent years have witnessed an emergence of interest in understanding metabolic changes associated with immune responses, termed immunometabolism. As oxygen is central to all aerobic metabolism, hypoxia is now recognized to contribute fundamentally to inflammatory and immune responses. Studies from a number of groups have implicated a prominent role for oxygen metabolism and hypoxia in innate immunity of healthy tissue (physiologic hypoxia) and during active inflammation (inflammatory hypoxia). This inflammatory hypoxia emanates from a combination of recruited inflammatory cells (e.g., neutrophils, eosinophils, and monocytes), high rates of oxidative metabolism, and the activation of multiple oxygen-consuming enzymes during inflammation. These localized shifts toward hypoxia have identified a prominent role for the transcription factor hypoxia-inducible factor (HIF) in the regulation of innate immunity. Such studies have provided new and enlightening insight into our basic understanding of immune mechanisms, and extensions of these findings have identified potential therapeutic targets. In this review, we summarize recent literature around the topic of innate immunity and mucosal hypoxia with a focus on transcriptional responses mediated by HIF.
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Affiliation(s)
- Sean P Colgan
- Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado 80045, USA;
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
| | - Glenn T Furuta
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
| | - Cormac T Taylor
- UCD Conway Institute, Systems Biology Ireland and School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
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Roles of nAChR and Wnt signaling in intestinal stem cell function and inflammation. Int Immunopharmacol 2020; 81:106260. [PMID: 32007796 DOI: 10.1016/j.intimp.2020.106260] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/20/2020] [Accepted: 01/24/2020] [Indexed: 01/02/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels that signal using endogenous acetylcholine (ACh) and the agonist, nicotine. The nAChR signaling pathway is a central regulator of physiological homeostasis in the central and peripheral nervous systems. The receptors are expressed not only in the nervous system, but also play a pivotal role in regulation of epithelial cell growth, migration, differentiation, and inflammation processes in various mammalian non-neuronal cells. In the intestine, the Wnt signaling pathway plays a central role in the epithelium and is a principal regulator of intestinal stem cell (ISC) identity and proliferation. Since Wnt signaling was first described more than 40 years ago in ISCs, large amounts of scientific evidence have demonstrated remarkable long-term self-renewal capacity of ISCs. Intestinal organoids are commonly used for studying ISC biology and intestinal pathophysiology. The contribution of non-neuronal nAChR signaling to Wnt signaling in the intestine has received less attention. Experiments using cultured intestinal organoids that lack nerve and immune cells were performed. Endogenous ACh is synthesized in the intestinal epithelium and drives organoid growth and differentiation through activation of nAChR signaling. Furthermore, nAChR signaling is coordinated with Wnt signaling for regulation of ISC function. Elucidating the mechanism of the coordinated activities of nAChR and Wnt signaling in the intestine provides new insight into epithelial homeostasis, and may be of particular relevance in inflammatory bowel diseases such as ulcerative colitis and Crohn's disease.
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Woznicki JA, Flood P, Bustamante-Garrido M, Stamou P, Moloney G, Fanning A, Zulquernain SA, McCarthy J, Shanahan F, Melgar S, Nally K. Human BCL-G regulates secretion of inflammatory chemokines but is dispensable for induction of apoptosis by IFN-γ and TNF-α in intestinal epithelial cells. Cell Death Dis 2020; 11:68. [PMID: 31988296 PMCID: PMC6985252 DOI: 10.1038/s41419-020-2263-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 02/06/2023]
Abstract
Proteins of the BCL-2 family are evolutionarily conserved modulators of apoptosis that function as sensors of cellular integrity. Over the past three decades multiple BCL-2 family members have been identified, many of which are now fully incorporated into regulatory networks governing the mitochondrial apoptotic pathway. For some, however, an exact role in cell death signalling remains unclear. One such ‘orphan’ BCL-2 family member is BCL-G (or BCL2L14). In this study we analysed gastrointestinal expression of human BCL-G in health and disease states, and investigated its contribution to inflammation-induced tissue damage by exposing intestinal epithelial cells (IEC) to IFN-γ and TNF-α, two pro-inflammatory mediators associated with gut immunopathology. We found that both BCL-G splice variants — BCL-GS (short) and BCL-GL (long) — were highly expressed in healthy gut tissue, and that their mRNA levels decreased in active inflammatory bowel diseases (for BCL-GS) and colorectal cancer (for BCL-GS/L). In vitro studies revealed that IFN-γ and TNF-α synergised to upregulate BCL-GS/L and to trigger apoptosis in colonic epithelial cell lines and primary human colonic organoids. Using RNAi, we showed that synergistic induction of IEC death was STAT1-dependent while optimal expression of BCL-GS/L required STAT1, NF-κB/p65 and SWI/SNF-associated chromatin remodellers BRM and BRG1. To test the direct contribution of BCL-G to the effects of IFN-γ and TNF-α on epithelial cells, we used RNAi- and CRISPR/Cas9-based perturbations in parallel with isoform-specific overexpression of BCL-G, and found that BCL-G was dispensable for Th1 cytokine-induced apoptosis of human IEC. Instead, we discovered that depletion of BCL-G differentially affected secretion of inflammatory chemokines CCL5 and CCL20, thus uncovering a non-apoptotic immunoregulatory function of this BCL-2 family member. Taken together, our data indicate that BCL-G may be involved in shaping immune responses in the human gut in health and disease states through regulation of chemokine secretion rather than intestinal apoptosis.
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Affiliation(s)
| | - Peter Flood
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | | | | | - Gerry Moloney
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Aine Fanning
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Syed Akbar Zulquernain
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,Department of Medicine, University College Cork, Cork, Ireland
| | - Jane McCarthy
- Department of Gastroenterology, Mercy University Hospital, Cork, Ireland
| | - Fergus Shanahan
- APC Microbiome Ireland, University College Cork, Cork, Ireland.,Department of Medicine, University College Cork, Cork, Ireland
| | - Silvia Melgar
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Ken Nally
- APC Microbiome Ireland, University College Cork, Cork, Ireland. .,School of Biochemistry & Cell Biology, University College Cork, Cork, Ireland.
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Tartakover Matalon S, Ringel Y, Konikoff F, Drucker L, Pery S, Naftali T. Cannabinoid receptor 2 agonist promotes parameters implicated in mucosal healing in patients with inflammatory bowel disease. United European Gastroenterol J 2019; 8:271-283. [PMID: 32213014 DOI: 10.1177/2050640619889773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Cannabis benefits patients with inflammatory bowel disease (IBD). Cannabinoid receptors are expressed in gut immune cells and in epithelial cells of inflamed guts. Mucosal healing (MH) requires epithelial layer restoration. OBJECTIVE To analyze the effects of CB2 agonist on parameters implicated in gut inflammation and MH. METHODS Mucosal samples from areas of inflamed/uninflamed colon from 16 patients with IBD were cultured without/with cannabinoid receptor 2 (CB2) agonist (JWH-133, 10 µM, 6 hours (hr)), and analyzed for epithelial/stromal cell proliferation, apoptosis (secretome matrix metalloproteinase 9 (MMP9) activity, which impairs epithelial permeability) and interleukin-8 (IL-8) levels (n = 5-9). In addition, Caco-2 (colon carcinoma epithelial cells) were cultured with biopsy secretomes (48 hr), and analyzed for phenotype and protein markers of proliferation (proliferating cell nuclear antigen), autophagy (LC3IIB) and permeability (Zonula occludens-1) (n = 4-6). RESULTS Uninflamed tissue had higher epithelial proliferation (Ki67: 50%↑, p < 0.05), and reduced secretome MMP9 activity and IL-8 levels (>50%↓, p < 0.05) compared to inflamed tissue. Treatment with CB2 agonist had no effect on epithelial apoptosis, but increased epithelial Ki67 expression (25%), and reduced secretome MMP9 and IL-8 levels in inflamed biopsies. Secretomes of CB2-treated biopsies increased Caco-2 number, migration, proliferating cell nuclear antigen and LC3IIB expression (all, p < 0.05), but had no effect on ZO-1. CONCLUSION Using ex vivo and in vitro human models, we demonstrated that manipulating the cannabinoid system affects colon cells and secretome characteristics that facilitate MH in IBD.
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Affiliation(s)
- Shelly Tartakover Matalon
- Gastroenterology Laboratory, Meir Medical Center, Kfar Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yehuda Ringel
- Gastroenterology Laboratory, Meir Medical Center, Kfar Saba, Israel.,Department of Gastroenterology and Hepatology, Meir Medical Center, Kfar Saba, Israel.,Division of Gastroenterology and Hepatology, Department of Medicine, University of North Carolina at Chapel Hill, 4107 Bioinformatics Building, 130 Mason Farm Road, Chapel Hill, NC, 27599-7080, USA
| | - Fred Konikoff
- Gastroenterology Laboratory, Meir Medical Center, Kfar Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Gastroenterology and Hepatology, Meir Medical Center, Kfar Saba, Israel
| | - Liat Drucker
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Oncogenetics Laboratory, Meir Medical Center, Kfar Saba, Israel
| | - Shaul Pery
- Gastroenterology Laboratory, Meir Medical Center, Kfar Saba, Israel
| | - Timna Naftali
- Gastroenterology Laboratory, Meir Medical Center, Kfar Saba, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Department of Gastroenterology and Hepatology, Meir Medical Center, Kfar Saba, Israel
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Thoo L, Noti M, Krebs P. Keep calm: the intestinal barrier at the interface of peace and war. Cell Death Dis 2019; 10:849. [PMID: 31699962 PMCID: PMC6838056 DOI: 10.1038/s41419-019-2086-z] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/11/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022]
Abstract
Epithelial barriers have to constantly cope with both harmless and harmful stimuli. The epithelial barrier therefore serves as a dynamic and not static wall to safeguard its proper physiological function while ensuring protection. This is achieved through multiple defence mechanisms involving various cell types - epithelial and non-epithelial - that work in an integrated manner to build protective barriers at mucosal sites. Damage may nevertheless occur, due to pathogens, physical insults or dysregulated immune responses, which trigger a physiologic acute or a pathologic chronic inflammatory cascade. Inflammation is often viewed as a pathological condition, particularly due to the increasing prevalence of chronic inflammatory (intestinal) diseases. However, inflammation is also necessary for wound healing. The aetiology of chronic inflammatory diseases is incompletely understood and identification of the underlying mechanisms would reveal additional therapeutic approaches. Resolution is an active host response to end ongoing inflammation but its relevance is under-appreciated. Currently, most therapies aim at dampening inflammation at damaged mucosal sites, yet these approaches do not efficiently shut down the inflammation process nor repair the epithelial barrier. Therefore, future treatment strategies should also promote the resolution phase. Yet, the task of repairing the barrier can be an arduous endeavour considering its multiple integrated layers of defence - which is advantageous for damage prevention but becomes challenging to repair at multiple levels. In this review, using the intestines as a model epithelial organ and barrier paradigm, we describe the consequences of chronic inflammation and highlight the importance of the mucosae to engage resolving processes to restore epithelial barrier integrity and function. We further discuss the contribution of pre-mRNA alternative splicing to barrier integrity and intestinal homeostasis. Following discussions on current open questions and challenges, we propose a model in which resolution of inflammation represents a key mechanism for the restoration of epithelial integrity and function.
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Affiliation(s)
- Lester Thoo
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Mario Noti
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.,Department of Gastro-Intestinal Health, Immunology, Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Philippe Krebs
- Division of Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland.
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Costa RG, Caro PL, de Matos‐Neto EM, Lima JD, Radloff K, Alves MJ, Camargo RG, Pessoa AFM, Simoes E, Gama P, Cara DC, da Silva AS, O. Pereira W, Maximiano LF, de Alcântara PS, Otoch JP, Trinchieri G, Laviano A, Muscaritoli M, Seelaender M. Cancer cachexia induces morphological and inflammatory changes in the intestinal mucosa. J Cachexia Sarcopenia Muscle 2019; 10:1116-1127. [PMID: 31307125 PMCID: PMC6818537 DOI: 10.1002/jcsm.12449] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/09/2019] [Accepted: 04/17/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cachexia is a multifactorial and multiorgan syndrome associated with cancer and other chronic diseases and characterized by severe involuntary body weight loss, disrupted metabolism, inflammation, anorexia, fatigue, and diminished quality of life. This syndrome affects around 50% of patients with colon cancer and is directly responsible for the death of at least 20% of all cancer patients. Systemic inflammation has been recently proposed to underline most of cachexia-related symptoms. Nevertheless, the exact mechanisms leading to the initiation of systemic inflammation have not yet been unveiled, as patients bearing the same tumour and disease stage may or may not present cachexia. We hypothesize a role for gut barrier disruption, which may elicit persistent immune activation in the host. To address this hypothesis, we analysed the healthy colon tissue, adjacent to the tumour. METHODS Blood and rectosigmoid colon samples (20 cm distal to tumour margin) obtained during surgery, from cachectic (CC = 25) or weight stable (WSC = 20) colon cancer patients, who signed the informed consent form, were submitted to morphological (light microscopy), immunological (immunohistochemistry and flow cytometry), and molecular (quantification of inflammatory factors by Luminex® xMAP) analyses. RESULTS There was no statistical difference in gender and age between groups. The content of plasma interleukin 6 (IL-6) and IL-8 was augmented in cachectic patients relative to those with stable weight (P = 0.047 and P = 0.009, respectively). The number of lymphocytic aggregates/field in the gut mucosa was higher in CC than in WSC (P = 0.019), in addition to those of the lamina propria (LP) eosinophils (P < 0.001) and fibroblasts (P < 0.001). The area occupied by goblet cells in the colon mucosa was decreased in CC (P = 0.016). The M1M2 macrophages percentage was increased in the colon of CC, in relation to WSC (P = 0.042). Protein expression of IL-7, IL-13, and transforming growth factor beta 3 in the colon was significantly increased in CC, compared with WSC (P = 0.02, P = 0.048, and P = 0.048, respectively), and a trend towards a higher content of granulocyte-colony stimulating factor in CC was also observed (P = 0.061). The results suggest an increased recruitment of immune cells to the colonic mucosa in CC, as compared with WSC, in a fashion that resembles repair response following injury, with higher tissue content of IL-13 and transforming growth factor beta 3. CONCLUSIONS The changes in the intestinal mucosa cellularity, along with modified cytokine expression in cachexia, indicate that gut barrier alterations are associated with the syndrome.
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Affiliation(s)
- Raquel G.F. Costa
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
- Cancer and Inflammation ProgramNational Cancer Institute, National Institutes of HealthBethesdaMDUSA
| | - Paula L. Caro
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Emídio M. de Matos‐Neto
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
- Department of Physical EducationFederal University of PiauiTeresinaPIBrazil
| | - Joanna D.C.C. Lima
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Katrin Radloff
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Michele J. Alves
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Rodolfo G. Camargo
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Ana Flávia M. Pessoa
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Estefania Simoes
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Patrícia Gama
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
| | - Denise C. Cara
- Department of MorphologyFederal University of Minas GeraisBelo HorizonteMGBrazil
| | | | - Welbert O. Pereira
- School of Medicine, Faculdade Isaraelita de Ciências da Saúde Albert Einstein (FICSAE)São PauloBrazil
| | - Linda F. Maximiano
- Department of SurgeryUniversity Hospital, University of São PauloSão PauloBrazil
- Department of SurgeryUniversity of São Paulo Medical School (FMUSP)São PauloBrazil
| | | | - José P. Otoch
- Department of SurgeryUniversity Hospital, University of São PauloSão PauloBrazil
- Department of SurgeryUniversity of São Paulo Medical School (FMUSP)São PauloBrazil
| | - Giorgio Trinchieri
- Cancer and Inflammation ProgramNational Cancer Institute, National Institutes of HealthBethesdaMDUSA
| | | | | | - Marília Seelaender
- Department of Cell and Developmental Biology, Institute of Biomedical SciencesUniversity of São Paulo (USP)São PauloBrazil
- Department of SurgeryUniversity of São Paulo Medical School (FMUSP)São PauloBrazil
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Wnt signaling in intestinal inflammation. Differentiation 2019; 108:24-32. [DOI: 10.1016/j.diff.2019.01.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/17/2018] [Accepted: 01/18/2019] [Indexed: 12/12/2022]
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Fernández-Montero Á, Torrecillas S, Izquierdo M, Caballero MJ, Milne DJ, Secombes CJ, Sweetman J, Da Silva P, Acosta F, Montero D. Increased parasite resistance of greater amberjack (Seriola dumerili Risso 1810) juveniles fed a cMOS supplemented diet is associated with upregulation of a discrete set of immune genes in mucosal tissues. FISH & SHELLFISH IMMUNOLOGY 2019; 86:35-45. [PMID: 30339845 DOI: 10.1016/j.fsi.2018.10.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
The main objective of this study was to determine the effect of two forms of mannan oligosaccharides (MOS: Bio-Mos® and cMOS: Actigen®, Alltech Inc, USA) and their combination on greater amberjack (Seriola dumerili) growth performance and feed efficiency, immune parameters and resistance against ectoparasite (Neobenedenia girellae) infection. Fish were fed for 90 days with 5 g kg-1 MOS, 2 g kg-1 cMOS or a combination of both prebiotics, in a Seriola commercial base diet (Skretting, Norway). At the end of the feeding period, no differences were found in growth performance or feed efficiency. Inclusion of MOS also had no effect on lysozyme activity in skin mucus and serum, but the supplementation of diets with cMOS induced a significant increase of serum bactericidal activity. Dietary cMOS also reduced significantly greater amberjack skin parasite levels, parasite total length and the number of parasites detected per unit of fish surface following a cohabitation challenge with N. girellae, whereas no effect of MOS was detected on these parameters. Of 17 immune genes studied cMOS dietary inclusion up-regulated hepcidin, defensin, Mx protein, interferon-γ (IFNγ), mucin-2 (MUC-2), interleukin-1β (IL-1B), IL-10 and immunoglobulin-T (IgT) gene expression in gills and/or skin. MOS supplementation had a larger impact on spleen and head kidney gene expression, where piscidin, defensin, iNOS, Mx protein, interferons, IL-1β, IL-10, IL-17 and IL-22 were all upregulated. In posterior gut dietary MOS and cMOS both induced IL-10, IgM and IgT, but with MOS also increasing piscidin, MUC-2, and IL-1β whilst cMOS induced hepcidin, defensin and IFNγ. In general, the combination of MOS and cMOS resulted in fewer or lower increases in all tissues, possibly due to an overstimulation effect. The utilization of cMOS at the dose used here has clear benefits on parasite resistance in greater amberjack, linked to upregulation of a discrete set of immune genes in mucosal tissues.
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Affiliation(s)
- Álvaro Fernández-Montero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain.
| | - Silvia Torrecillas
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain
| | - Marisol Izquierdo
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain
| | - María José Caballero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain
| | - Douglas John Milne
- Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen, Scotland, AB24 2TZ, UK
| | - Christopher John Secombes
- Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen, Scotland, AB24 2TZ, UK
| | | | | | - Félix Acosta
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain
| | - Daniel Montero
- Grupo de Investigación en Acuicultura (GIA), Instituto Universitario Ecoaqua, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain
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Cellular and Molecular Therapeutic Targets in Inflammatory Bowel Disease-Focusing on Intestinal Barrier Function. Cells 2019; 8:cells8020193. [PMID: 30813280 PMCID: PMC6407030 DOI: 10.3390/cells8020193] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/18/2019] [Accepted: 02/21/2019] [Indexed: 02/06/2023] Open
Abstract
The human gut relies on several cellular and molecular mechanisms to allow for an intact and dynamical intestinal barrier. Normally, only small amounts of luminal content pass the mucosa, however, if the control is broken it can lead to enhanced passage, which might damage the mucosa, leading to pathological conditions, such as inflammatory bowel disease (IBD). It is well established that genetic, environmental, and immunological factors all contribute in the pathogenesis of IBD, and a disturbed intestinal barrier function has become a hallmark of the disease. Genetical studies support the involvement of intestinal barrier as several susceptibility genes for IBD encode proteins with key functions in gut barrier and homeostasis. IBD patients are associated with loss in bacterial diversity and shifts in the microbiota, with a possible link to local inflammation. Furthermore, alterations of immune cells and several neuro-immune signaling pathways in the lamina propria have been demonstrated. An inappropriate immune activation might lead to mucosal inflammation, with elevated secretion of pro-inflammatory cytokines that can affect the epithelium and promote a leakier barrier. This review will focus on the main cells and molecular mechanisms in IBD and how these can be targeted in order to improve intestinal barrier function and reduce inflammation.
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40
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Wu D, Lewis ED, Pae M, Meydani SN. Nutritional Modulation of Immune Function: Analysis of Evidence, Mechanisms, and Clinical Relevance. Front Immunol 2019; 9:3160. [PMID: 30697214 PMCID: PMC6340979 DOI: 10.3389/fimmu.2018.03160] [Citation(s) in RCA: 226] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/21/2018] [Indexed: 12/12/2022] Open
Abstract
It is well-established that the nutritional deficiency or inadequacy can impair immune functions. Growing evidence suggests that for certain nutrients increased intake above currently recommended levels may help optimize immune functions including improving defense function and thus resistance to infection, while maintaining tolerance. This review will examine the data representing the research on prominent intervention agents n-3 polyunsaturated fatty acids (PUFA), micronutrients (zinc, vitamins D and E), and functional foods including probiotics and tea components for their immunological effects, working mechanisms, and clinical relevance. Many of these nutritive and non-nutritive food components are related in their functions to maintain or improve immune function including inhibition of pro-inflammatory mediators, promotion of anti-inflammatory functions, modulation of cell-mediated immunity, alteration of antigen-presenting cell functions, and communication between the innate and adaptive immune systems. Both animal and human studies present promising findings suggesting a clinical benefit of vitamin D, n-3 PUFA, and green tea catechin EGCG in autoimmune and inflammatory disorders, and vitamin D, vitamin E, zinc, and probiotics in reduction of infection. However, many studies report divergent and discrepant results/conclusions due to various factors. Chief among them, and thus call for attention, includes more standardized trial designs, better characterized populations, greater consideration for the intervention doses used, and more meaningful outcome measurements chosen.
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Affiliation(s)
- Dayong Wu
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States
| | - Erin D Lewis
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States
| | - Munyong Pae
- Department of Food and Nutrition, Chungbuk National University, Cheongju, South Korea
| | - Simin Nikbin Meydani
- Nutritional Immunology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, United States
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Lasfar A, Zloza A, Silk AW, Lee LY, Cohen-Solal KA. Interferon Lambda: Toward a Dual Role in Cancer. J Interferon Cytokine Res 2019; 39:22-29. [DOI: 10.1089/jir.2018.0046] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Ahmed Lasfar
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Andrew Zloza
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, New Jersey
| | - Ann W. Silk
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Leonard Y. Lee
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, New Jersey
- Robert Wood Johnson University Hospital, New Brunswick, New Jersey
| | - Karine A. Cohen-Solal
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, New Jersey
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Martens K, Pugin B, De Boeck I, Spacova I, Steelant B, Seys SF, Lebeer S, Hellings PW. Probiotics for the airways: Potential to improve epithelial and immune homeostasis. Allergy 2018; 73:1954-1963. [PMID: 29869783 DOI: 10.1111/all.13495] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2018] [Indexed: 12/30/2022]
Abstract
Probiotics are live microorganisms that, when administered in adequate amounts, confer health benefit on the host. The therapeutic effects of probiotics have been mostly studied in the gastrointestinal tract, but recent evidence points toward the potential of these bacteria to prevent and/or treat chronic airway diseases. In this review, possible mechanisms of action of probiotics in the airways are described, with a particular focus on their capacity to modulate the epithelial barrier function and their mode of interaction with the immune system. Indeed, probiotic bacteria, mostly lactobacilli, can promote the expression and regulation of tight junctions and adherence junctions, resulting in the restoration of a defective epithelial barrier. These bacteria interact with the epithelial barrier and immune cells through pattern recognition receptors, such as Toll-like receptors, which upon activation can stimulate or suppress various immune responses. Finally, the clinical potential of probiotics to treat inflammatory diseases of the upper and lower respiratory tract, and the difference between their mode of application (eg, oral or nasal) are discussed here.
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Affiliation(s)
- K. Martens
- Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - B. Pugin
- Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - I. De Boeck
- Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - I. Spacova
- Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - B. Steelant
- Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - S. F. Seys
- Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - S. Lebeer
- Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - P. W. Hellings
- Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Clinical Division of Otorhinolaryngology, Head and Neck Surgery University Hospitals Leuven Leuven Belgium
- Department of Otorhinolaryngology University Hospitals Ghent Ghent Belgium
- Department of Otorhinolaryngology Academic Medical Center University of Amsterdam Amsterdam the Netherlands
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mTORC1 Prevents Epithelial Damage During Inflammation and Inhibits Colitis-Associated Colorectal Cancer Development. Transl Oncol 2018; 12:24-35. [PMID: 30265974 PMCID: PMC6161367 DOI: 10.1016/j.tranon.2018.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/27/2018] [Accepted: 08/27/2018] [Indexed: 12/14/2022] Open
Abstract
Epithelial cells lining the intestinal mucosa constitute a selective-semipermeable barrier acting as first line of defense in the organism. The number of those cells remains constant during physiological conditions, but disruption of epithelial cell homeostasis has been observed in several pathologies. During colitis, epithelial cell proliferation decreases and cell death augments. The mechanism responsible for these changes remains unknown. Here, we show that the pro-inflammatory cytokine IFNγ contributes to the inhibition of epithelial cell proliferation in intestinal epithelial cells (IECs) by inducing the activation of mTORC1. Activation of mTORC1 in response to IFNγ was detected in IECs present along the crypt axis and in colonic macrophages. mTORC1 inhibition enhances cell proliferation, increases DNA damage in IEC. In macrophages, mTORC1 inhibition strongly reduces the expression of pro-inflammatory markers. As a consequence, mTORC1 inhibition exacerbated disease activity, increased mucosal damage, enhanced ulceration, augmented cell infiltration, decreased survival and stimulated tumor formation in a model of colorectal cancer CRC associated to colitis. Thus, our findings suggest that mTORC1 signaling downstream of IFNγ prevents epithelial DNA damage and cancer development during colitis.
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Mechanisms regulating intestinal barrier integrity and its pathological implications. Exp Mol Med 2018; 50:1-9. [PMID: 30115904 PMCID: PMC6095905 DOI: 10.1038/s12276-018-0126-x] [Citation(s) in RCA: 825] [Impact Index Per Article: 137.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 04/11/2018] [Indexed: 02/06/2023] Open
Abstract
The gastrointestinal tract is a specialized organ in which dynamic interactions between host cells and the complex environment occur in addition to food digestion. Together with the chemical barrier of the mucosal layer and the cellular immune system, the epithelial cell layer performs a pivotal role as the first physical barrier against external factors and maintains a symbiotic relationship with commensal bacteria. The tight junction proteins, including occludin, claudins, and zonula occludens, are crucial for the maintenance of epithelial barrier integrity. To allow the transport of essential molecules and restrict harmful substances, the intracellular signaling transduction system and a number of extracellular stimuli such as cytokines, small GTPases, and post-translational modifications dynamically modulate the tight junction protein complexes. An imbalance in these regulations leads to compromised barrier integrity and is linked with pathological conditions. Despite the obscurity of the causal relationship, the loss of barrier integrity is considered to contribute to inflammatory bowel disease, obesity, and metabolic disorders. The elucidation of the role of diseases in barrier integrity and the underlying regulatory mechanisms have improved our understanding of the intestinal barrier to allow the development of novel and potent therapeutic approaches. A better understanding of how the cells that line the inside of the intestines allow nutrients in, while keeping harmful substances and pathogens out could lead to new therapies for inflammatory bowel disease, obesity, and other conditions. A team from South Korea led by Sung Ho Ryu from Pohang University of Science and Technology review the regulatory mechanisms that help maintain the intestinal epithelial barrier. They discuss the role of tight junction proteins in forming a seal between adjacent cells and the various signaling pathways that loosen or tighten these junctions to enable limited transport. Loss of barrier integrity because of genetics, gut microbes, auto-immunity, diet, or other factors is often implicated in disease, and restoring barrier function with drugs or probiotics could help ameliorate many health problems.
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Gamo K, Okuzono Y, Yabuki M, Ochi T, Sugimura K, Sato Y, Sagara M, Hayashi H, Ishimura Y, Nishimoto Y, Murakawa Y, Shiokawa Z, Gotoh M, Miyazaki T, Ebisuno Y. Gene Signature-Based Approach Identified MEK1/2 as a Potential Target Associated With Relapse After Anti-TNFα Treatment for Crohn's Disease. Inflamm Bowel Dis 2018; 24:1251-1265. [PMID: 29669006 PMCID: PMC6176896 DOI: 10.1093/ibd/izy079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Anti-tumor necrosis factor alpha (anti-TNFα) therapy has become the mainstay of therapy for Crohn's disease (CD). However, post-therapy, the recurrence rate is still high. The aim of this study was to dissect the molecular mechanism for recurrence of CD treated with anti-TNFα therapy and investigate novel therapeutic options that could induce complete remission. METHODS We re-analyzed publicly available mucosal gene expression data from CD patients pre- and post-infliximab therapy to extract the transcriptional differences between responders and healthy controls. We used a systematic computational approach based on identified differences to discover novel therapies and validated this prediction through in vitro and in vivo experimentation. RESULTS We identified a set of 3545 anti-TNFα therapy-untreatable genes (TUGs) that are significantly regulated in intestinal epithelial cells, which remain altered during remission. Pathway enrichment analysis of these genes clearly showed excessive growth state and suppressed terminal differentiation, whereas immune components were clearly resolved. Through in silico screening strategy, we observed that MEK inhibitors were predicted to revert expression of genes dysregulated in infliximab responders. In vitro transcriptome analysis demonstrated that selective MEK1/2 inhibitor significantly normalized reference genes from TUGs. In addition, in vitro functional study proved that MEK1/2 inhibitor facilitated intestinal epithelial differentiation. Finally, using murine colitis model, administration of MEK1/2 inhibitor significantly improved diarrhea and histological score. CONCLUSIONS Our data revealed the abnormalities in anti-TNFα responders' CD colons that would be cause of recurrence of CD. Also, we provided evidence regarding MEK1/2 inhibitor as a potential treatment against CD to achieve sustainable remission.
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Affiliation(s)
- Kanae Gamo
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Yuumi Okuzono
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Masato Yabuki
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Takashi Ochi
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Kyoko Sugimura
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Yosuke Sato
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Masaki Sagara
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Hiroki Hayashi
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Yoshimasa Ishimura
- Drug Safety Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Yutaka Nishimoto
- Pharmaceutical Technology Research and Development Laboratories, CMC Center, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Osaka, Japan
| | - Yusuke Murakawa
- Pharmaceutical Technology Research and Development Laboratories, CMC Center, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Osaka, Japan
| | - Zenyu Shiokawa
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Masayuki Gotoh
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Takahiro Miyazaki
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - Yukihiko Ebisuno
- Immunology Unit, Takeda Pharmaceutical Company Limited, Fujisawa, Japan,Address correspondence to: Yukihiko Ebisuno, PhD, Immunology Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 2-26-1, Muraoka-Higashi, Fujisawa 251–8555, Japan ()
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Lee SI, Kim IH. Difructose dianhydride improves intestinal calcium absorption, wound healing, and barrier function. Sci Rep 2018; 8:7813. [PMID: 29777169 PMCID: PMC5959885 DOI: 10.1038/s41598-018-26295-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/03/2018] [Indexed: 02/01/2023] Open
Abstract
The gastrointestinal tract (GIT) is critical for nutrient absorption and is an important barrier against harmful pathogens and antigens. Difructose anhydrides (DFA)-IVs are nondigestible disaccharides that enhance calcium and iron absorption by affecting the intestinal epithelial tissue. However, their effects on intestinal functions are not fully understood. In this study, we performed a feeding trial and found that dietary DFA-IVs improved growth performance, relative breast muscle and liver weight, and digestibility and blood calcium and iron concentrations in broilers. Additionally, dietary DFA-IVs increased expression of genes related to growth in the liver, muscle development, and absorption of calcium and iron in the intestine. In vitro experiments revealed that DFA-IV treatment improved intestinal wound-healing (migration, proliferation, and differentiation) after lipopolysaccharide (LPS) challenge in small intestinal epithelial cells. Furthermore, DFA-IV treatment enhanced the intestinal barrier function, which increased the transepithelial electrical resistance (TEER) and decreased the permeability of fluorescein isothiocyanate-dextran (FD-4) after LPS challenge in small intestinal epithelial cells. Collectively, these data indicate that DFA-IV could be used as a feed additive to enhance calcium and iron absorption by affecting the intestinal wound healing and permeability. This study may help improve our understanding of the molecular effects of DFA-IV on the intestine.
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Affiliation(s)
- Sang In Lee
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam, 330-714, Republic of Korea
| | - In Ho Kim
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam, 330-714, Republic of Korea.
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Abstract
Mucosal tissues represent surfaces that are exposed to the outside world and provide a conduit for internal and external communication. Tissues such as the intestine and the lung are lined by layer(s) of epithelial cells that, when organized in three dimensions, provide a critical barrier to the flux of luminal contents. This selective barrier is provided through the regulated expression of junctional proteins and mucins. Tissue oxygen metabolism is central to the maintenance of homeostasis in the mucosa. In some organs (e.g., the colon), low baseline Po2 determines tissue metabolism and results in basal expression of the transcription factor, hypoxia-inducible factor (HIF), which is enhanced after ischemia/inflammation. Recent studies have indicated that HIF contributes fundamentally to the expression of barrier-related genes and in the regulation of barrier-adaptive responses within the mucosa. Here, we briefly review recent literature on the topic of hypoxia and HIF regulation of barrier in mucosal health and during disease.
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Ferrebee CB, Li J, Haywood J, Pachura K, Robinson BS, Hinrichs BH, Jones RM, Rao A, Dawson PA. Organic Solute Transporter α-β Protects Ileal Enterocytes From Bile Acid-Induced Injury. Cell Mol Gastroenterol Hepatol 2018; 5:499-522. [PMID: 29930976 PMCID: PMC6009794 DOI: 10.1016/j.jcmgh.2018.01.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 01/05/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND & AIMS Ileal bile acid absorption is mediated by uptake via the apical sodium-dependent bile acid transporter (ASBT), and export via the basolateral heteromeric organic solute transporter α-β (OSTα-OSTβ). In this study, we investigated the cytotoxic effects of enterocyte bile acid stasis in Ostα-/- mice, including the temporal relationship between intestinal injury and initiation of the enterohepatic circulation of bile acids. METHODS Ileal tissue morphometry, histology, markers of cell proliferation, gene, and protein expression were analyzed in male and female wild-type and Ostα-/- mice at postnatal days 5, 10, 15, 20, and 30. Ostα-/-Asbt-/- mice were generated and analyzed. Bile acid activation of intestinal Nrf2-activated pathways was investigated in Drosophila. RESULTS As early as day 5, Ostα-/- mice showed significantly increased ileal weight per length, decreased villus height, and increased epithelial cell proliferation. This correlated with premature expression of the Asbt and induction of bile acid-activated farnesoid X receptor target genes in neonatal Ostα-/- mice. Expression of reduced nicotinamide adenine dinucleotide phosphate oxidase-1 and Nrf2-anti-oxidant responsive genes were increased significantly in neonatal Ostα-/- mice at these postnatal time points. Bile acids also activated Nrf2 in Drosophila enterocytes and enterocyte-specific knockdown of Nrf2 increased sensitivity of flies to bile acid-induced toxicity. Inactivation of the Asbt prevented the changes in ileal morphology and induction of anti-oxidant response genes in Ostα-/- mice. CONCLUSIONS Early in postnatal development, loss of Ostα leads to bile acid accumulation, oxidative stress, and a restitution response in ileum. In addition to its essential role in maintaining bile acid homeostasis, Ostα-Ostβ functions to protect the ileal epithelium against bile acid-induced injury. NCBI Gene Expression Omnibus: GSE99579.
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Key Words
- ARE, anti-oxidant response element
- Asbt, apical sodium-dependent bile acid transporter
- CDCA, chenodeoxycholic acid
- Drosophila
- FGF, fibroblast growth factor
- FXR, farnesoid X receptor
- GAPDH, glyceraldehyde-3-phosphate dehydrogenase
- GFP, green fluorescence protein
- GSH, reduced glutathione
- GSSG, oxidized glutathione
- Ibabp, ileal bile acid binding protein
- Ileum
- NEC, necrotizing enterocolitis
- Neonate
- Nox, reduced nicotinamide adenine dinucleotide phosphate oxidase
- Nrf2, nuclear factor (erythroid-derived 2)-like 2
- Nuclear Factor Erythroid-Derived 2-Like 2
- Ost, organic solute transporter
- PBS, phosphate-buffered saline
- ROS, reactive oxygen species
- Reactive Oxygen Species
- TNF, tumor necrosis factor
- TUNEL, terminal deoxynucleotidyl transferase–mediated deoxyuridine triphosphate nick-end labeling
- WT, wild type
- cRNA, complementary RNA
- mRNA, messenger RNA
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Affiliation(s)
- Courtney B. Ferrebee
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Jianing Li
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Jamie Haywood
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Kimberly Pachura
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | | | | | - Rheinallt M. Jones
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Anuradha Rao
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
| | - Paul A. Dawson
- Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Emory University, Atlanta, Georgia
- Children’s Healthcare of Atlanta, Atlanta, Georgia
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Consequences of Epithelial Inflammasome Activation by Bacterial Pathogens. J Mol Biol 2018; 430:193-206. [DOI: 10.1016/j.jmb.2017.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/17/2017] [Accepted: 03/19/2017] [Indexed: 01/02/2023]
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Frau C, Godart M, Plateroti M. Thyroid hormone regulation of intestinal epithelial stem cell biology. Mol Cell Endocrinol 2017; 459:90-97. [PMID: 28288904 DOI: 10.1016/j.mce.2017.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 01/08/2023]
Abstract
The gastrointestinal tract is a well-characterized target of thyroid hormones and thyroid hormone nuclear receptors TRs, as extensively described in the literature. The paradigm is its important remodelling in amphibians during thyroid hormone-dependent metamorphosis. Interestingly, several studies have described the conservation of this hormonal signal during intestinal development in mammals. Additional data suggested that it may also play a role in intestinal homeostasis, stem cell physiology and progenitor commitment as well as in tumour development. It is worth underlining that in the mammalian intestine the functionality of the TRα1 receptor is coordinated and integrated with other signalling pathways, such as Wnt and Notch, specifically at the level of stem/progenitor cell populations. Here, we summarize these data and concepts and discuss this new role for thyroid hormones and the TRα1 receptor in the biology of intestinal epithelial precursor cells.
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Affiliation(s)
- Carla Frau
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France
| | - Matthias Godart
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France
| | - Michelina Plateroti
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France.
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