1
|
Hong SM, Baek DH. Diagnostic Procedures for Inflammatory Bowel Disease: Laboratory, Endoscopy, Pathology, Imaging, and Beyond. Diagnostics (Basel) 2024; 14:1384. [PMID: 39001273 PMCID: PMC11241288 DOI: 10.3390/diagnostics14131384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/26/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024] Open
Abstract
Diagnosing inflammatory bowel disease (IBD) can often be challenging, and differentiating between Crohn's disease and ulcerative colitis can be particularly difficult. Diagnostic procedures for IBD include laboratory tests, endoscopy, pathological tests, and imaging tests. Serological and stool tests can be easily performed in an outpatient setting and provide critical diagnostic clues. Although endoscopy is an invasive procedure, it offers essential diagnostic information and allows for tissue biopsy and therapeutic procedures. Video capsule endoscopy and device-assisted enteroscopy are endoscopic procedures used to evaluate the small bowel. In addition to endoscopy, magnetic resonance imaging, computed tomography, and ultrasound (US) are valuable tools for small bowel assessment. Among these, US is noninvasive and easily utilized, making its use highly practical in daily clinical practice. Endoscopic biopsy aids in the diagnosis of IBD and is crucial for assessing the histological activity of the disease, facilitating a thorough evaluation of disease remission, and aiding in the development of treatment strategies. Recent advances in artificial intelligence hold promise for enhancing various aspects of IBD management, including diagnosis, monitoring, and precision medicine. This review compiles current procedures and promising future tools for the diagnosis of IBD, providing comprehensive insights.
Collapse
Affiliation(s)
- Seung Min Hong
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| | - Dong Hoon Baek
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| |
Collapse
|
2
|
Thomas MF, Slowikowski K, Manakongtreecheep K, Sen P, Samanta N, Tantivit J, Nasrallah M, Zubiri L, Smith NP, Tirard A, Ramesh S, Arnold BY, Nieman LT, Chen JH, Eisenhaure T, Pelka K, Song Y, Xu KH, Jorgji V, Pinto CJ, Sharova T, Glasser R, Chan P, Sullivan RJ, Khalili H, Juric D, Boland GM, Dougan M, Hacohen N, Li B, Reynolds KL, Villani AC. Single-cell transcriptomic analyses reveal distinct immune cell contributions to epithelial barrier dysfunction in checkpoint inhibitor colitis. Nat Med 2024; 30:1349-1362. [PMID: 38724705 DOI: 10.1038/s41591-024-02895-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 03/01/2024] [Indexed: 05/23/2024]
Abstract
Immune checkpoint inhibitor (ICI) therapy has revolutionized oncology, but treatments are limited by immune-related adverse events, including checkpoint inhibitor colitis (irColitis). Little is understood about the pathogenic mechanisms driving irColitis, which does not readily occur in model organisms, such as mice. To define molecular drivers of irColitis, we used single-cell multi-omics to profile approximately 300,000 cells from the colon mucosa and blood of 13 patients with cancer who developed irColitis (nine on anti-PD-1 or anti-CTLA-4 monotherapy and four on dual ICI therapy; most patients had skin or lung cancer), eight controls on ICI therapy and eight healthy controls. Patients with irColitis showed expanded mucosal Tregs, ITGAEHi CD8 tissue-resident memory T cells expressing CXCL13 and Th17 gene programs and recirculating ITGB2Hi CD8 T cells. Cytotoxic GNLYHi CD4 T cells, recirculating ITGB2Hi CD8 T cells and endothelial cells expressing hypoxia gene programs were further expanded in colitis associated with anti-PD-1/CTLA-4 therapy compared to anti-PD-1 therapy. Luminal epithelial cells in patients with irColitis expressed PCSK9, PD-L1 and interferon-induced signatures associated with apoptosis, increased cell turnover and malabsorption. Together, these data suggest roles for circulating T cells and epithelial-immune crosstalk critical to PD-1/CTLA-4-dependent tolerance and barrier function and identify potential therapeutic targets for irColitis.
Collapse
Affiliation(s)
- Molly Fisher Thomas
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA.
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA.
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA.
- Harvard Medical School, Boston, MA, USA.
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
- Division of Gastroenterology, Department of Medicine, Oregon Health and Sciences University, Portland, OR, USA.
- Department of Cell, Developmental, and Cancer Biology, Oregon Health and Sciences University, Portland, OR, USA.
| | - Kamil Slowikowski
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA.
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA.
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA.
- Harvard Medical School, Boston, MA, USA.
| | - Kasidet Manakongtreecheep
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Pritha Sen
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Transplant, Oncology, and Immunocompromised Host Group, Division of Infectious Disease, Department of Medicine, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nandini Samanta
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Jessica Tantivit
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Mazen Nasrallah
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Rheumatology, Department of Medicine, North Shore Physicians Group, Mass General Brigham Healthcare Center, Lynn, MA, USA
| | - Leyre Zubiri
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Hematology-Oncology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Neal P Smith
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Alice Tirard
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Swetha Ramesh
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Benjamin Y Arnold
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Linda T Nieman
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jonathan H Chen
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - Thomas Eisenhaure
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
| | - Karin Pelka
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA
| | - Yuhui Song
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
| | - Katherine H Xu
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
| | - Vjola Jorgji
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | | | - Tatyana Sharova
- Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Rachel Glasser
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - PuiYee Chan
- Harvard Medical School, Boston, MA, USA
- Clinical Research Center, Massachusetts General Hospital, Boston, MA, USA
| | - Ryan J Sullivan
- Harvard Medical School, Boston, MA, USA
- Division of Hematology-Oncology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Hamed Khalili
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Dejan Juric
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Hematology-Oncology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Genevieve M Boland
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Michael Dougan
- Harvard Medical School, Boston, MA, USA
- Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Nir Hacohen
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Bo Li
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA
- Harvard Medical School, Boston, MA, USA
- Genentech, South San Francisco, CA, USA
| | - Kerry L Reynolds
- Harvard Medical School, Boston, MA, USA
- Division of Hematology-Oncology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Alexandra-Chloé Villani
- Department of Medicine, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA.
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA.
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA.
- Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
3
|
Song Y, Zhu L, Zheng X. β-carotene inhibits MAPKs signaling pathways on rat colonic epithelial cells to attenuate TNF-α-induced intestinal inflammation and injury. Cell Biochem Biophys 2024; 82:291-302. [PMID: 38082173 DOI: 10.1007/s12013-023-01202-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 11/19/2023] [Indexed: 02/16/2024]
Abstract
This experiment successfully isolated the rat colonic epithelial cells and established a TNF-α-induced intestinal inflammation model. Western Blot was used to detect the related protein expression levels of the MAPKs signaling pathway. QPCR technology was used to detect the expression of aquaporins, intestinal mucosal repair factor, and inflammatory factors. The results show that 25 μM β-carotene pretreatment at 24 h can inhibit MAPKs signaling pathway activated by TNF-α, change the relative mRNA expression of inflammatory cytokines, intestinal mucosal repair factors, and aquaporins, and the phosphorylated protein expression of p38, ERK, and NF-κB were attenuated to reduce inflammatory damage. After inhibiting p38 and ERK, the effect of β-carotene was reduced significantly (P < 0.05). In conclusion, β-carotene can alleviate the abnormal expression of aquaporins caused by inflammation through the MAPKs signaling pathway. This is for β-carotene as a functional nutrient that provides new insights.
Collapse
Affiliation(s)
- Yang Song
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, China
| | - Lingyu Zhu
- Department of Nutrition and Food, School of Public Health, Beihua University, Jilin, Jilin Province, China
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, China.
| |
Collapse
|
4
|
Mu K, Kitts DD. Intestinal polyphenol antioxidant activity involves redox signaling mechanisms facilitated by aquaporin activity. Redox Biol 2023; 68:102948. [PMID: 37922763 PMCID: PMC10643476 DOI: 10.1016/j.redox.2023.102948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023] Open
Abstract
Ascertaining whether dietary polyphenols evoke an antioxidant or prooxidant activity, which translates to a functional role required to maintain intestinal cell homeostasis continues to be an active and controversial area of research for food chemists and biochemists alike. We have proposed that the paradoxical function of polyphenols to autoxidize to generate H2O2 is a required first step in the capacity of some plant phenolics to function as intracellular antioxidants. This is based on the fact that cell redox homeostasis is achieved by a balance between H2O2 formation and subsequent outcomes of antioxidant systems function. Maintaining optimal extracellular and intracellular H2O2 concentrations is required for cell survival, since low levels are important to upregulate endogenous antioxidant capacity; whereas, concentrations that go beyond homeostatic control typically result in an inflammatory response, growth arrest, or eventual cell death. Aquaporins (AQPs) are a family of water channel membrane proteins that facilitate cellular transportation of water and other small molecule-derived solutes, such as H2O2, in all organisms. In the intestine, AQPs act as gatekeepers to regulate intracellular uptake of H2O2, generated from extracellular polyphenol autoxidation, thus enabling an intracellular cell signaling responses to mitigate onset of oxidative stress and intestinal inflammation. In this review, we highlight the potential role of AQPs to control important underlying mechanisms that define downstream regulation of intestinal redox homeostasis, specifically. It has been established that polyphenols that undergo oxidation to the quinone form, resulting in subsequent adduction to a thiol group on Keap1-Nrf2 complex, trigger Nrf2 activation and a cascade of indirect intracellular antioxidant effects. Here, we propose a similar mechanism that involves H2O2 generated from specific dietary polyphenols with a predisposition to undergo autoxidation. The ultimate bioactivity is regulated and expressed by AQP membrane function and thus, by extension, represents expression of an intracellular antioxidant chemoprotection mechanism.
Collapse
Affiliation(s)
- Kaiwen Mu
- Food Science, Food Nutrition and Health Program. Faculty of Land and Food System, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada
| | - David D Kitts
- Food Science, Food Nutrition and Health Program. Faculty of Land and Food System, The University of British Columbia, 2205 East Mall, Vancouver, B.C, V6T 1Z4, Canada.
| |
Collapse
|
5
|
Volkart S, Kym U, Braissant O, Delgado-Eckert E, Al-Samir S, Angresius R, Huo Z, Holland-Cunz S, Gros SJ. AQP1 in the Gastrointestinal Tract of Mice: Expression Pattern and Impact of AQP1 Knockout on Colonic Function. Int J Mol Sci 2023; 24:ijms24043616. [PMID: 36835026 PMCID: PMC9959819 DOI: 10.3390/ijms24043616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/04/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Aquaporin 1 (AQP1) is one of thirteen known mammalian aquaporins. Its main function is the transport of water across cell membranes. Lately, a role of AQP has been attributed to other physiological and pathological functions including cell migration and peripheral pain perception. AQP1 has been found in several parts of the enteric nervous system, e.g., in the rat ileum and in the ovine duodenum. Its function in the intestine appears to be multifaceted and is still not completely understood. The aim of the study was to analyze the distribution and localization of AQP1 in the entire intestinal tract of mice. AQP1 expression was correlated with the hypoxic expression profile of the various intestinal segments, intestinal wall thickness and edema, as well as other aspects of colon function including the ability of mice to concentrate stools and their microbiome composition. AQP1 was found in a specific pattern in the serosa, the mucosa, and the enteric nervous system throughout the gastrointestinal tract. The highest amount of AQP1 in the gastrointestinal tract was found in the small intestine. AQP1 expression correlated with the expression profiles of hypoxia-dependent proteins such as HIF-1α and PGK1. Loss of AQP1 through knockout of AQP1 in these mice led to a reduced amount of bacteroidetes and firmicutes but an increased amount of the rest of the phyla, especially deferribacteres, proteobacteria, and verrucomicrobia. Although AQP-KO mice retained gastrointestinal function, distinct changes regarding the anatomy of the intestinal wall including intestinal wall thickness and edema were observed. Loss of AQP1 might interfere with the ability of the mice to concentrate their stool and it is associated with a significantly different composition of the of the bacterial stool microbiome.
Collapse
Affiliation(s)
- Stefanie Volkart
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4001 Basel, Switzerland
| | - Urs Kym
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4001 Basel, Switzerland
| | - Olivier Braissant
- Microcalorimetry Unit, Department of Biomedical Engineering, University of Basel, 4001 Basel, Switzerland
| | - Edgar Delgado-Eckert
- Computational Physiology and Biostatistics, Department of Biomedical Engineering at University of Basel and University Children’s Hospital Basel, 4056 Basel, Switzerland
| | - Samer Al-Samir
- Vegetative Physiologie 4220, Zentrum Physiologie, Medizinische Hochschule Hannover, 30625 Hannover, Germany
| | - Rebecca Angresius
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4001 Basel, Switzerland
| | - Zihe Huo
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4001 Basel, Switzerland
| | - Stefan Holland-Cunz
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4001 Basel, Switzerland
| | - Stephanie J. Gros
- Department of Pediatric Surgery, University Children’s Hospital Basel, 4056 Basel, Switzerland
- Correspondence:
| |
Collapse
|
6
|
Tang D, Pu B, Liu S, Li H. Identification of cuproptosis-associated subtypes and signature genes for diagnosis and risk prediction of Ulcerative colitis based on machine learning. Front Immunol 2023; 14:1142215. [PMID: 37090740 PMCID: PMC10113635 DOI: 10.3389/fimmu.2023.1142215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/24/2023] [Indexed: 04/25/2023] Open
Abstract
Background Ulcerative colitis (UC) is a chronic and debilitating inflammatory bowel disease that impairs quality of life. Cuproptosis, a recently discovered form of cell death, has been linked to many inflammatory diseases, including UC. This study aimed to examine the biological and clinical significance of cuproptosis-related genes in UC. Methods Three gene expression profiles of UC were obtained from the Gene Expression Omnibus (GEO) database to form the combined dataset. Differential analysis was performed based on the combined dataset to identify differentially expressed genes, which were intersected with cuproptosis-related genes to obtain differentially expressed cuproptosis-related genes (DECRGs). Machine learning was conducted based on DECRGs to identify signature genes. The prediction model of UC was established using signature genes, and the molecular subtypes related to cuproptosis of UC were identified. Functional enrichment analysis and immune infiltration analysis were used to evaluate the biological characteristics and immune infiltration landscape of signature genes and molecular subtypes. Results Seven signature genes (ABCB1, AQP1, BACE1, CA3, COX5A, DAPK2, and LDHD) were identified through the machine learning algorithms, and the nomogram built from these genes had excellent predictive performance. The 298 UC samples were divided into two subtypes through consensus cluster analysis. The results of the functional enrichment analysis and immune infiltration analysis revealed significant differences in gene expression patterns, biological functions, and enrichment pathways between the cuproptosis-related molecular subtypes of UC. The immune infiltration analysis also showed that the immune cell infiltration in cluster A was significantly higher than that of cluster B, and six of the characteristic genes (excluding BACE1) had higher expression levels in subtype B than in subtype A. Conclusions This study identified several promising signature genes and developed a nomogram with strong predictive capabilities. The identification of distinct subtypes of UC enhances our current understanding of UC's underlying pathogenesis and provides a foundation for personalized diagnosis and treatment in the future.
Collapse
Affiliation(s)
- Dadong Tang
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Baoping Pu
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shiru Liu
- Department of Anorectal Disease, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hongyan Li
- Department of Anorectal Disease, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hongyan Li,
| |
Collapse
|
7
|
Li X, Yang B. Non-Transport Functions of Aquaporins. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1398:65-80. [PMID: 36717487 DOI: 10.1007/978-981-19-7415-1_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Although it has been more than 20 years since the first aquaporin was discovered, the specific functions of many aquaporins are still under investigation, because various mice lacking aquaporins have no significant phenotypes. And in many studies, the function of aquaporin is not directly related to its transport function. Therefore, this chapter will focus on some unexpected functions of aquaporins, such the decreased tumor angiogenesis in AQP1 knockout mice, and AQP1 promotes cell migration, possibly by accelerating the water transport in lamellipodia of migrating cells. AQP transports glycerol, and water regulates glycerol content in epidermis and fat, thereby regulating skin hydration/biosynthesis and fat metabolism. AQPs may also be involved in neural signal transduction, cell volume regulation, and organelle physiology. AQP1, AQP3, and AQP5 are also involved in cell proliferation. In addition, AQPs have also been reported to play roles in inflammation in various tissues and organs. The functions of these AQPs may not depend on the permeability of small molecules such as water and glycerol, suggesting AQPs may play more roles in different biological processes in the body.
Collapse
Affiliation(s)
- Xiaowei Li
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Baoxue Yang
- School of Basic Medical Sciences, Peking University, Beijing, China.
| |
Collapse
|
8
|
Zhang B, Wei X, Ding M, Luo Z, Tan X, Zheng Z. Daidzein Protects Caco-2 Cells against Lipopolysaccharide-Induced Intestinal Epithelial Barrier Injury by Suppressing PI3K/AKT and P38 Pathways. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248928. [PMID: 36558058 PMCID: PMC9781898 DOI: 10.3390/molecules27248928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/10/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
The intestinal epithelium provides an important barrier against bacterial endotoxin translocation, which can regulate the absorption of water and ions. The disruption of epithelial barrier function can result in water transport and tight junction damage, or further cause diarrhea. Therefore, reducing intestinal epithelial barrier injury plays an important role in diarrhea. Inflammatory response is an important cause of intestinal barrier defects. Daidzein improving the barrier integrity has been reported, but the effect on tight junction proteins and aquaporins is not well-described yet, and the underlying mechanism remains indistinct in the human intestinal epithelium. This study aimed to investigate the effects and mechanisms of daidzein on intestinal epithelial barrier injury induced by LPS, and a barrier injury model induced by LPS was established with human colorectal epithelial adenocarcinoma cell line Caco-2 cells. We found that daidzein protected the integrity of Caco-2 cell monolayers, reversed LPS-induced downregulation of ZO-1, occludin, claudin-1, and AQP3 expression, maintained intercellular junction of ZO-1, and suppressed NF-κB and the expression of inflammatory factors (TNF-α, IL-6). Furthermore, we found that daidzein suppressed the phosphorylation of the PI3K/AKT and P38 pathway-related proteins and the level of the related genes, and the PI3K/AKT and P38 pathway inhibitors increased ZO-1, occludin, claudin-1, and AQP3 expression. The study showed that daidzein could resist LPS-induced intestinal epithelial barrier injury, and the mechanism is related to suppressing the PI3K/AKT and P38 pathways. Therefore, daidzein could be a candidate as a dietary supplementation or drug to prevent or cure diarrhea.
Collapse
Affiliation(s)
- Baoping Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangzhou Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, China
| | - Xiaohan Wei
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangzhou Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, China
| | - Mengze Ding
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangzhou Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, China
| | - Zhenye Luo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangzhou Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, China
| | - Xiaomei Tan
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
- Guangzhou Provincial Key Laboratory of Chinese Medicine Pharmaceutics, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory of Chinese Medicine Preparation Technology, Guangzhou 510515, China
- Correspondence: (X.T.); (Z.Z.)
| | - Zezhong Zheng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (X.T.); (Z.Z.)
| |
Collapse
|
9
|
Huang Y, Yan S, Su Z, Xia L, Xie J, Zhang F, Du Z, Hou X, Deng J, Hao E. Aquaporins: A new target for traditional Chinese medicine in the treatment of digestive system diseases. Front Pharmacol 2022; 13:1069310. [PMID: 36532729 PMCID: PMC9752864 DOI: 10.3389/fphar.2022.1069310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/21/2022] [Indexed: 11/07/2023] Open
Abstract
Aquaporins (AQPs) are a family of transmembrane proteins expressed in various organ systems. Many studies have shown that the abnormal expression of AQPs is associated with gastrointestinal, skin, liver, kidneys, edema, cancer, and other diseases. The majority of AQPs are expressed in the digestive system and have important implications for the physiopathology of the gastrointestinal tract as well as other tissues and organs. AQP regulators can prevent and treat most gastrointestinal-related diseases, such as colorectal cancer, gastric ulcer, and gastric cancer. Although recent studies have proposed clinically relevant AQP-targeted therapies, such as the development of AQP inhibitors, clinical trials are still lacking and there are many difficulties. Traditional Chinese medicine (TCM) has been used in China for thousands of years to prevent, treat and diagnose diseases, and is under the guidance of Chinese medicine (CM) theory. Herein, we review the latest research on the regulation of AQPs by TCMs and their active components, including Rhei Radix et Rhizoma, Atractylodis macrocephalae Rhizoma, Salviae miltiorrhizae Radix et Rhizoma, Poria, Astragali radix, and another 26 TCMs, as well as active components, which include the active components include anthraquinones, saponins, polysaccharides, and flavonoid glycosides. Through our review and discussion of numerous studies, we attempt to explore the regulatory effects of TCMs and their active components on AQP expression in the corresponding parts of the body in terms of the Triple Energizer concept in Chinese medicine defined as "upper energizer, middle energizer, and lower energizer,"so as to offer unique opportunities for the development of AQP-related therapeutic drugs for digestive system diseases.
Collapse
Affiliation(s)
- Yuchan Huang
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Shidu Yan
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Zixia Su
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Lei Xia
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Jinling Xie
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Fan Zhang
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Zhengcai Du
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Xiaotao Hou
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Jiagang Deng
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| | - Erwei Hao
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues, Guangxi University of Chinese Medicine, Nanning, China
- Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases, Guangxi University of Chinese Medicine, Nanning, China
| |
Collapse
|
10
|
McConnel CS, Slanzon GS, Parrish LM, Trombetta SC, Shaw LF, Moore DA, Sischo WM. Transcriptional changes detected in fecal RNA from neonatal dairy calves of different breeds following gastrointestinal disease of varying severity. PLoS One 2022; 17:e0278664. [PMID: 36454999 PMCID: PMC9714867 DOI: 10.1371/journal.pone.0278664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022] Open
Abstract
Gastrointestinal (GI) disease is a major health concern in preweaned dairy calves. The objective of this fixed cohort study was to use RNA isolated from preweaned Holstein and Jersey heifer calf feces to study the molecular adaptations to variable clinical GI disease. The study was conducted on a commercial calf ranch in the western U.S. Enrolled calves were assessed twice daily for variations in demeanor, milk intake, and hydration. Fecal consistency scores were recorded at enrollment (day 1), and on the day (day 10) that a fecal sample was collected for differential gene expression (DGE). Calves with diarrhea on either day were classified as having either uncomplicated, localized GI disease (scours), or systemic GI disease (systemic enteritis). Eighty-four calves' fecal RNA was evaluated for DGE, of which 33 calves (n = 20 Holstein; n = 13 Jersey) were consistently healthy. The remaining 51 calves (n = 23 Holstein; n = 28 Jersey) experienced varying severity of GI disease during the sampling window. Genes of interest were related to the inflammatory response (i.e., IFNG, NFKB1, NOD2, TLR2, and TLR4) and cell membrane or cytoplasmic transport (i.e., AQP3, FABP2, KRT8 and SLC5A1). Breed-specific findings indicated that AQP3, IFNG, and TLR4 were upregulated in Holsteins with systemic enteritis, whereas KRT8 was downregulated in systemically affected Jerseys. Holsteins did not appear affected by scours aside from a tendency for DGE of toll-like receptors (TLRs) on the day of diarrhea. However, Jersey calves consistently demonstrated a tendency to upregulate IFNG, NFKB1, and TLR4 when affected with either scours or systemic enteritis. These findings were more pronounced in systemically affected Jersey calves and were observed as a delayed response to both scours and systemic enteritis. These findings support previous observations suggesting that Holstein calves may be better equipped than Jersey calves to rapidly fight pathogen invasion.
Collapse
Affiliation(s)
- C. S. McConnel
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
- * E-mail:
| | - G. S. Slanzon
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| | - L. M. Parrish
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| | - S. C. Trombetta
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| | - L. F. Shaw
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| | - D. A. Moore
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| | - W. M. Sischo
- Department of Veterinary Clinical Sciences, Field Disease Investigation Unit, Washington State University, Pullman, Washington, United States of America
| |
Collapse
|
11
|
Aquaporin 8ab is required in zebrafish embryonic intestine development. Acta Biochim Biophys Sin (Shanghai) 2022; 54:952-960. [PMID: 35880566 PMCID: PMC9828320 DOI: 10.3724/abbs.2022077] [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] [Indexed: 11/25/2022] Open
Abstract
The aquaporin 8 (AQP8) is a small integral membrane protein that selectively transports water and other small uncharged solutes across cell plasma membranes. It has been demonstrated that AQP8 is ubiquitously present in various tissues and organs of mammals, and participates in many physiological and pathological processes. Recent studies showed that AQP8 is highly expressed in the columnar epithelial cells of mammalian colonic mucosa facing lumen, indicating that AQP8 plays potential roles in the physiology and pathophysiology of gastrointestinal tract. However, the role of AQP8 during gastrointestinal tract development is unclear. In the present study, RT-PCR results reveal that the zebrafish genome encodes three kinds of aqp8s ( aqp8aa, aqp8ab, and aqp8b). We use whole mount in situ hybridization to describe aqp8 genes spatiotemporal expression pattern, and the results show that aqp8ab mRNA is detectable mainly in the zebrafish embryonic intestine. To reveal the details of aqp8ab distribution, histological sections are employed. Transverse sections indicate that aqp8ab mRNA expression is more intense in the layer lining the intestinal cavity. Knockout of aqp8ab using the CRISPR/Cas9 system induces intestine development defects and abnormal formation of intestinal lumen. In addition, aqp8ab mRNA significantly rescues the intestine defects in the aqp8ab mutant. These results indicate that aqp8ab is required in the intestine development of zebrafish.
Collapse
|
12
|
Hypo-osmotic stress induces the epithelial alarmin IL-33 in the colonic barrier of ulcerative colitis. Sci Rep 2022; 12:11550. [PMID: 35798804 PMCID: PMC9263100 DOI: 10.1038/s41598-022-15573-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 06/27/2022] [Indexed: 11/08/2022] Open
Abstract
Epithelial alarmins are gaining interest as therapeutic targets for chronic inflammation. The nuclear alarmin interleukin-33 (IL-33) is upregulated in the colonic mucosa of acute ulcerative colitis (UC) and may represent an early instigator of the inflammatory cascade. However, it is not clear what signals drive the expression of IL-33 in the colonic mucosa, nor is the exact role of IL-33 elucidated. We established an ex vivo model using endoscopic colonic biopsies from healthy controls and UC patients. Colonic biopsies exposed to hypo-osmotic medium induced a strong nuclear IL-33 expression in colonic crypts in both healthy controls and UC biopsies. Mucosal IL33 mRNA was also significantly increased following hypo-osmotic stress in healthy controls compared to non-stimulated biopsies (fold change 3.9, p-value < 0.02). We observed a modest induction of IL-33 in response to TGF-beta-1 stimulation, whereas responsiveness to inflammatory cytokines TNF and IFN-gamma was negligible. In conclusion our findings indicate that epithelial IL-33 is induced by hypo-osmotic stress, rather than prototypic proinflammatory cytokines in colonic ex vivo biopsies. This is a novel finding, linking a potent cytokine and alarmin of the innate immune system with cellular stress mechanisms and mucosal inflammation.
Collapse
|
13
|
Tosti E, Almeida AS, Tran TTT, Barbachan E Silva M, Broin PÓ, Dubin R, Chen K, Beck AP, Mclellan AS, Vilar E, Golden A, O'Toole PW, Edelmann W. Loss of MMR and TGFBR2 Increases the Susceptibility to Microbiota-Dependent Inflammation-Associated Colon Cancer. Cell Mol Gastroenterol Hepatol 2022; 14:693-717. [PMID: 35688320 PMCID: PMC9421583 DOI: 10.1016/j.jcmgh.2022.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 04/29/2022] [Accepted: 05/18/2022] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND AIMS Mutations in DNA mismatch repair (MMR) genes are causative in Lynch syndrome and a significant proportion of sporadic colorectal cancers (CRCs). MMR-deficient (dMMR) CRCs display increased mutation rates, with mutations frequently accumulating at short repetitive DNA sequences throughout the genome (microsatellite instability). The TGFBR2 gene is one of the most frequently mutated genes in dMMR CRCs. Therefore, we generated an animal model to study how the loss of both TGFBR2 signaling impacts dMMR-driven intestinal tumorigenesis in vivo and explore the impact of the gut microbiota. METHODS We generated VCMsh2/Tgfbr2 mice in which Msh2loxP and Tgfbr2loxP alleles are inactivated by Villin-Cre recombinase in the intestinal epithelium. VCMsh2/Tgfbr2 mice were analyzed for their rate of intestinal cancer development and for the mutational spectra and gene expression profiles of tumors. In addition, we assessed the impact of chemically induced chronic inflammation and gut microbiota composition on colorectal tumorigenesis. RESULTS VCMsh2/Tgfbr2 mice developed small intestinal adenocarcinomas and CRCs with histopathological features highly similar to CRCs in Lynch syndrome patients. The CRCs in VCMsh2/Tgfbr2 mice were associated with the presence of colitis and displayed genetic and histological features that resembled inflammation-associated CRCs in human patients. The development of CRCs in VCMsh2/Tgfbr2 mice was strongly modulated by the gut microbiota composition, which in turn was impacted by the TGFBR2 status of the tumors. CONCLUSIONS Our results demonstrate a synergistic interaction between MMR and TGFBR2 inactivation in inflammation-associated colon tumorigenesis and highlight the crucial impact of the gut microbiota on modulating the incidence of inflammation-associated CRCs.
Collapse
Affiliation(s)
- Elena Tosti
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York.
| | - Ana S Almeida
- APC Microbiome Ireland and School of Microbiology, University College Cork, Cork, Ireland
| | - Tam T T Tran
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Mariel Barbachan E Silva
- School of Mathematics, Statistics and Applied Mathematics, National University of Ireland Galway, Galway, Ireland
| | - Pilib Ó Broin
- School of Mathematics, Statistics and Applied Mathematics, National University of Ireland Galway, Galway, Ireland
| | - Robert Dubin
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Ken Chen
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Amanda P Beck
- Department of Pathology, Albert Einstein College of Medicine, Bronx, New York
| | - Andrew S Mclellan
- Department of Genetics and Genomic Sciences, Mount Sinai School of Medicine, New York, New York
| | - Eduardo Vilar
- Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Aaron Golden
- School of Mathematics, Statistics and Applied Mathematics, National University of Ireland Galway, Galway, Ireland
| | - Paul W O'Toole
- APC Microbiome Ireland and School of Microbiology, University College Cork, Cork, Ireland
| | - Winfried Edelmann
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York.
| |
Collapse
|
14
|
Zhang M, Zhang B, Chen R, Li M, Zheng Z, Xu W, Zhang Y, Gong S, Hu Q. Human Norovirus Induces Aquaporin 1 Production by Activating NF-κB Signaling Pathway. Viruses 2022; 14:842. [PMID: 35458572 PMCID: PMC9028284 DOI: 10.3390/v14040842] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/10/2022] [Accepted: 04/15/2022] [Indexed: 12/17/2022] Open
Abstract
Human norovirus (HuNoV) is one of the major pathogens of acute nonbacterial gastroenteritis. Due to the lack of a robust and reproducible in vitro culture system and an appropriate animal model, the mechanism underlying HuNoV-caused diarrhea remains unknown. In the current study, we found that HuNoV transfection induced the expression of aquaporin 1 (AQP1), which was further confirmed in the context of virus infection, whereas the enterovirus EV71 (enterovirus 71) did not have such an effect. We further revealed that VP1, the major capsid protein of HuNoV, was crucial in promoting AQP1 expression. Mechanistically, HuNoV induces AQP1 production through the NF-κB signaling pathway via inducing the expression, phosphorylation and nuclear translocation of p65. By using a model of human intestinal epithelial barrier (IEB), we demonstrated that HuNoV and VP1-mediated enhancement of small molecule permeability is associated with the AQP1 channel. Collectively, we revealed that HuNoV induced the production of AQP1 by activating the NF-κB signaling pathway. The findings in this study provide a basis for further understanding the significance of HuNoV-induced AQP1 expression and the potential mechanism underlying HuNoV-caused diarrhea.
Collapse
Affiliation(s)
- Mudan Zhang
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Binman Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Miaomiao Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zifeng Zheng
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Wanfu Xu
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yifan Zhang
- Maternal and Child Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, China
| | - Sitang Gong
- Department of Gastroenterology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Qinxue Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
- Institute for Infection and Immunity, St George's, University of London, London SW17 0RE, UK
| |
Collapse
|
15
|
Kanke M, Kennedy Ng MM, Connelly S, Singh M, Schaner M, Shanahan MT, Wolber EA, Beasley C, Lian G, Jain A, Long MD, Barnes EL, Herfarth HH, Isaacs KL, Hansen JJ, Kapadia M, Guillem JG, Feschotte C, Furey TS, Sheikh SZ, Sethupathy P. Single-Cell Analysis Reveals Unexpected Cellular Changes and Transposon Expression Signatures in the Colonic Epithelium of Treatment-Naïve Adult Crohn's Disease Patients. Cell Mol Gastroenterol Hepatol 2022; 13:1717-1740. [PMID: 35158099 PMCID: PMC9046244 DOI: 10.1016/j.jcmgh.2022.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/04/2022] [Accepted: 02/04/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS The intestinal barrier comprises a monolayer of specialized intestinal epithelial cells (IECs) that are critical in maintaining mucosal homeostasis. Dysfunction within various IEC fractions can alter intestinal permeability in a genetically susceptible host, resulting in a chronic and debilitating condition known as Crohn's disease (CD). Defining the molecular changes in each IEC type in CD will contribute to an improved understanding of the pathogenic processes and the identification of cell type-specific therapeutic targets. We performed, at single-cell resolution, a direct comparison of the colonic epithelial cellular and molecular landscape between treatment-naïve adult CD and non-inflammatory bowel disease control patients. METHODS Colonic epithelial-enriched, single-cell sequencing from treatment-naïve adult CD and non-inflammatory bowel disease patients was investigated to identify disease-induced differences in IEC types. RESULTS Our analysis showed that in CD patients there is a significant skew in the colonic epithelial cellular distribution away from canonical LGR5+ stem cells, located at the crypt bottom, and toward one specific subtype of mature colonocytes, located at the crypt top. Further analysis showed unique changes to gene expression programs in every major cell type, including a previously undescribed suppression in CD of most enteroendocrine driver genes as well as L-cell markers including GCG. We also dissect an incompletely understood SPIB+ cell cluster, revealing at least 4 subclusters that likely represent different stages of a maturational trajectory. One of these SPIB+ subclusters expresses crypt-top colonocyte markers and is up-regulated significantly in CD, whereas another subcluster strongly expresses and stains positive for lysozyme (albeit no other canonical Paneth cell marker), which surprisingly is greatly reduced in expression in CD. In addition, we also discovered transposable element markers of colonic epithelial cell types as well as transposable element families that are altered significantly in CD in a cell type-specific manner. Finally, through integration with data from genome-wide association studies, we show that genes implicated in CD risk show heretofore unknown cell type-specific patterns of aberrant expression in CD, providing unprecedented insight into the potential biological functions of these genes. CONCLUSIONS Single-cell analysis shows a number of unexpected cellular and molecular features, including transposable element expression signatures, in the colonic epithelium of treatment-naïve adult CD.
Collapse
Affiliation(s)
- Matt Kanke
- Biomedical Sciences, Cornell University, Ithaca, New York
| | - Meaghan M Kennedy Ng
- Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Sean Connelly
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Manvendra Singh
- Molecular Biology and Genetics, Cornell University, Ithaca, New York
| | - Matthew Schaner
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | | | - Elizabeth A Wolber
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Caroline Beasley
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Grace Lian
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Animesh Jain
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Millie D Long
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Edward L Barnes
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Hans H Herfarth
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Kim L Isaacs
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jonathon J Hansen
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Muneera Kapadia
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jose Gaston Guillem
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Cedric Feschotte
- Molecular Biology and Genetics, Cornell University, Ithaca, New York
| | - Terrence S Furey
- Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| | - Shehzad Z Sheikh
- Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| | | |
Collapse
|
16
|
Schroyen M, Li B, Arévalo Sureda E, Zhang Y, Leblois J, Deforce D, Van Nieuwerburgh F, Wavreille J, Everaert N. Pre-Weaning Inulin Supplementation Alters the Ileal Transcriptome in Pigs Regarding Lipid Metabolism. Vet Sci 2021; 8:vetsci8100207. [PMID: 34679037 PMCID: PMC8539436 DOI: 10.3390/vetsci8100207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/22/2021] [Accepted: 09/22/2021] [Indexed: 12/28/2022] Open
Abstract
Prebiotics, such as inulin, are non-digestible compounds that stimulate the growth of beneficial microbiota, which results in improved gut and overall health. In this study, we were interested to see if, and how, the ileal transcriptome altered after inulin administration in the pre-weaning period in pigs. Seventy-two Piétrain–Landrace newborn piglets were divided into three groups: (a) a control (CON) group (n = 24), (b) an inulin (IN)-0.5 group (n = 24), and (c) an IN-0.75 group (n = 24). Inulin was provided as a solution and administered twice a day. At week 4, eight piglets per group, those closest to the average in body weight, were sacrificed, and ileal scrapings were collected and analyzed using 3′ mRNA massively parallel sequencing. Only minor differences were found, and three genes were differentially expressed between the CON and IN-0.5 group, at an FDR of 10%. All three genes were downregulated in the IN-0.5 group. When comparing the CON group with the IN-0.75 group, five genes were downregulated in the IN-0.75 group, including the three genes seen earlier as differentially expressed between CON and IN-0.5. No genes were found to be differential expressed between IN-0.5 and IN-0.75. Validation of a selection of these genes was done using qRT-PCR. Among the downregulated genes were Angiopoietin-like protein 4 (ANGPTL4), Aquaporin 7 (AQP7), and Apolipoprotein A1 (APOA1). Thus, although only a few genes were found to be differentially expressed, several of them were involved in lipid metabolism, belonging to the peroxisome proliferator-activated receptor (PPAR) signaling pathway and known to promote lipolysis. We, therefore, conclude that these lipid metabolism genes expressed in the ileum may play an important role when supplementing piglets with inulin early in life, before weaning.
Collapse
Affiliation(s)
- Martine Schroyen
- Precision Livestock and Nutrition Laboratory, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium; (M.S.); (B.L.); (E.A.S.); (Y.Z.)
| | - Bing Li
- Precision Livestock and Nutrition Laboratory, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium; (M.S.); (B.L.); (E.A.S.); (Y.Z.)
| | - Ester Arévalo Sureda
- Precision Livestock and Nutrition Laboratory, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium; (M.S.); (B.L.); (E.A.S.); (Y.Z.)
| | - Yuping Zhang
- Precision Livestock and Nutrition Laboratory, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium; (M.S.); (B.L.); (E.A.S.); (Y.Z.)
| | - Julie Leblois
- Association Wallonne de l’Élevage asbl (AWÉ), B-5590 Ciney, Belgium;
| | - Dieter Deforce
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, B-9000 Ghent, Belgium; (D.D.); (F.V.N.)
| | - Filip Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, B-9000 Ghent, Belgium; (D.D.); (F.V.N.)
| | - José Wavreille
- Walloon Agricultural Research Center, Department of Production and Sectors, B-5030 Gembloux, Belgium;
| | - Nadia Everaert
- Precision Livestock and Nutrition Laboratory, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium; (M.S.); (B.L.); (E.A.S.); (Y.Z.)
- Correspondence: ; Tel.: +32-81-62-24-48
| |
Collapse
|
17
|
Münch A, Mihaly E, Nagy F, Madisch A, Kupčinskas J, Miehlke S, Bohr J, Bouma G, Guardiola J, Belloc B, Shi C, Aust D, Mohrbacher R, Greinwald R, Munck LK. Budesonide as induction therapy for incomplete microscopic colitis: A randomised, placebo-controlled multicentre trial. United European Gastroenterol J 2021; 9:837-847. [PMID: 34414678 PMCID: PMC8435258 DOI: 10.1002/ueg2.12131] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/01/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND AIMS Incomplete microscopic colitis (MCi) is a subtype of microscopic colitis (MC). Budesonide is recommended as a first-line treatment for MC. However, randomised trials on efficacy of treatment in MCi are missing. We therefore performed a randomised, placebo-controlled trial to evaluate budesonide as induction therapy for MCi. METHODS Patients with active MCi were randomly assigned to either budesonide 9 mg once daily or placebo for 8 weeks in a double-blind, double-dummy design. The primary endpoint was clinical remission, defined as a mean of <3 stools/day and a mean of <1 watery stool/day in the 7 days before week 8. RESULTS Due to insufficient patient recruitment, the trial was discontinued prematurely. The intention-to-treat analysis included 44 patients (21 budesonide and 23 placebo). The primary endpoint of clinical remission at week 8 was obtained by 71.4% on budesonide and 43.5% on placebo (p = 0.0582). All clinical secondary endpoints were in favour of budesonide. Budesonide decreased the number of soft or watery stools (16.3 vs. 7.7, p = 0.0186) and improved health-related quality of life for all four dimensions of the short health scale. Adverse events with a suspected relation to study drug were reported in one patient in the budesonide group and two patients in the placebo group. Neither serious nor severe adverse events occurred during the double-blind phase. CONCLUSIONS Budesonide decreased the frequency of soft or watery stools and improved the patients' quality of life significantly in MCi, but the primary endpoint was not met due to the low sample size (type 2 error). Budesonide was safe and well tolerated during the 8-weeks treatment course.
Collapse
Affiliation(s)
- Andreas Münch
- Department of Gastroenterology and HepatologyLinköping University Hospital School of MedicineLinköpingSweden
| | - Emese Mihaly
- Department of Internal MedicineSemmelweis EgyetemBudapestHungary
| | - Ferenc Nagy
- First Department of MedicineSzegedi Egyetem ÁOK I sz.SzegedHungary
| | - Ahmed Madisch
- Medical Department IKRH Klinikum SiloahHannoverGermany
| | - Juozas Kupčinskas
- Department of GastroenterologyInstitute for Digestive ResearchLithuanian University of Health SciencesKaunasLithuania
| | - Stephan Miehlke
- Center for Digestive DiseasesInternal Medicine Center EppendorfHamburgGermany
- Centre for Interdisciplinary EndoscopyUniversity Hospital EppendorfHamburgGermany
| | - Johan Bohr
- Division of GastroenterologyDepartment of MedicineÖrebro University HospitalÖrebroSweden
| | - Gerd Bouma
- Department of GastroenterologyVrije Universiteit Medical CentreAmsterdamNetherlands
| | - Jordi Guardiola
- Department of Digestive DiseasesHospital Universitario de BellvitgeBarcelonaSpain
| | - Blanca Belloc
- Department of GastroenterologyHospital San Jorge – University of ZaragozaHuescaSpain
| | - Chunliang Shi
- Department of GastroenterologyNorrlands UniversitetssjukhusUmeåSweden
| | - Daniela Aust
- Institute for PathologyUniversity Hospital Carl Gustav CarusDresdenGermany
| | - Ralf Mohrbacher
- Clinical Research and Development DepartmentDr Falk Pharma GmbHFreiburgGermany
| | - Roland Greinwald
- Clinical Research and Development DepartmentDr Falk Pharma GmbHFreiburgGermany
| | - Lars Kristian Munck
- Department of GastroenterologyZealand University HospitalKøgeDenmark
- Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
| |
Collapse
|
18
|
Sauna dehydration as a new physiological challenge model for intestinal barrier function. Sci Rep 2021; 11:15514. [PMID: 34330970 PMCID: PMC8324874 DOI: 10.1038/s41598-021-94814-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/16/2021] [Indexed: 12/15/2022] Open
Abstract
The intestinal barrier plays a crucial role in maintaining gut health, and an increased permeability has been linked to several intestinal and extra-intestinal disorders. There is an increasing demand for interventions aimed at strengthening this barrier and for in vivo challenge models to assess their efficiency. This study investigated the effect of sauna-induced dehydration on intestinal barrier function (clinicaltrials.gov: NCT03620825). Twenty healthy subjects underwent three conditions in random order: (1) Sauna dehydration (loss of 3% body weight), (2) non-steroidal anti-inflammatory drug (NSAID) intake, (3) negative control. Intestinal permeability was assessed by a multi-sugar urinary recovery test, while intestinal damage, bacterial translocation and cytokines were assessed by plasma markers. The sauna dehydration protocol resulted in an increase in gastroduodenal and small intestinal permeability. Presumably, this increase occurred without substantial damage to the enterocytes as plasma intestinal fatty acid-binding protein (I-FABP) and liver fatty acid-binding protein (L-FABP) were not affected. In addition, we observed significant increases in levels of lipopolysaccharide-binding protein (LBP), IL-6 and IL-8, while sCD14, IL-10, IFN-ɣ and TNF-α were not affected. These results suggest that sauna dehydration increased intestinal permeability and could be applied as a new physiological in vivo challenge model for intestinal barrier function.
Collapse
|
19
|
Wang Z, Cheng Y, Su W, Zhang H, Li C, Routledge MN, Gong Y, Qiao B. Organ Specific Differences in Alteration of Aquaporin Expression in Rats Treated with Sennoside A, Senna Anthraquinones and Rhubarb Anthraquinones. Int J Mol Sci 2021; 22:ijms22158026. [PMID: 34360801 PMCID: PMC8347161 DOI: 10.3390/ijms22158026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 12/12/2022] Open
Abstract
Senna and rhubarb are often used as routine laxatives, but there are differences in mechanism of action and potential side effects. Here, we studied metabolites of senna anthraquinones (SAQ), rhubarb anthraquinones (RAQ) and their chemical marker, sennoside A (SA), in a rat diarrhea model. In in vitro biotransformation experiments, SAQ, RAQ and SA were incubated with rat fecal flora solution and the metabolites produced were analyzed using HPLC. In in vivo studies, the same compounds were investigated for purgation induction, with measurement of histopathology and Aqps gene expression in six organs. The results indicated that SAQ and RAQ had similar principal constituents but could be degraded into different metabolites. A similar profile of Aqps down-regulation for all compounds was seen in the colon, suggesting a similar mechanism of action for purgation. However, in the kidneys and livers of the diarrhea-rats, down-regulation of Aqps was found in the RAQ-rats whereas up-regulation of Aqps was seen in the SAQ-rats. Furthermore, the RAQ-rats showed lower Aqp2 protein expression in the kidneys, whilst the SA-rats and SAQ-rats had higher Aqp2 protein expression in the kidneys. This may have implications for side effects of SAQ or RAQ in patients with chronic kidney or liver diseases.
Collapse
Affiliation(s)
- Zhaoyang Wang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
| | - Ying Cheng
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
| | - Wenting Su
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
| | - Hongxia Zhang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
| | - Chu Li
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
| | - Michael N. Routledge
- School of Medicine, University of Leeds, Leeds LS2 9JT, UK
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (M.N.R.); (B.Q.)
| | - Yunyun Gong
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, UK;
| | - Boling Qiao
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi’an 710069, China; (Z.W.); (Y.C.); (W.S.); (H.Z.); (C.L.)
- Correspondence: (M.N.R.); (B.Q.)
| |
Collapse
|
20
|
Lv H, Li Y, Xue C, Dong N, Bi C, Shan A. Aquaporin: targets for dietary nutrients to regulate intestinal health. J Anim Physiol Anim Nutr (Berl) 2021; 106:167-180. [PMID: 33811387 DOI: 10.1111/jpn.13539] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 12/07/2020] [Accepted: 02/07/2021] [Indexed: 12/22/2022]
Abstract
Aquaporins (AQP) are a class of water channel membrane proteins that are widely expressed in the gut. The biological functions of aquaporins, which regulate the absorption and secretion of water molecules and small solutes, maintain the stable state of the intestine, regulate cell proliferation and migration, participate in the process of intestinal inflammation, and mediate tumorigenesis, demonstrate the physiological significance of these channels in intestinal health. The pathology of many intestinal diseases is associated with changes in the location and expression of aquaporins, such as intestinal infection, which can change the expression and distribution of AQPs in intestinal tissues/cells by affecting cytokines and chemokines. This can lead to various intestinal diseases such as diarrhoea, which also suggests the importance of aquaporins in the prevention and treatment of intestinal diseases. This review summarizes the relationship between aquaporins and intestinal physiology and diseases and focuses on drugs (such as plant extracts) or diets that can regulate intestinal health by regulating aquaporins. It provides a basis for establishing aquaporins as biomarkers and therapeutic targets for intestinal health.
Collapse
Affiliation(s)
- Hao Lv
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Ying Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Chenyu Xue
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Na Dong
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Chongpeng Bi
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Anshan Shan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| |
Collapse
|
21
|
Tardelli M, Stulnig TM. Aquaporin regulation in metabolic organs. VITAMINS AND HORMONES 2021; 112:71-93. [PMID: 32061350 DOI: 10.1016/bs.vh.2019.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aquaporins (AQPs) are a family of 13 small trans-membrane proteins, which facilitate shuttling of glycerol, water and urea. The peculiar role of AQPs in glycerol transport makes them attractive targets in metabolic organs since glycerol represents the backbone of triglyceride synthesis. Importantly, AQPs are known to be regulated by various nuclear receptors which in turn govern lipid and glucose metabolism as well as inflammatory cascades. Here, we review the role of AQPs regulation in metabolic organs exploring their physiological impact in health and disease.
Collapse
Affiliation(s)
- Matteo Tardelli
- Division of Gastroenterology and Hepatology, Joan & Sanford I. Weill Cornell Department of Medicine, Weill Cornell Medical College, New York, NY, United States; Clinical Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Thomas M Stulnig
- Clinical Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
22
|
Yde J, Keely SJ, Moeller HB. Expression, regulation and function of Aquaporin-3 in colonic epithelial cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1863:183619. [PMID: 33811845 DOI: 10.1016/j.bbamem.2021.183619] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/22/2021] [Accepted: 03/25/2021] [Indexed: 12/13/2022]
Abstract
The human colon balances water and electrolyte absorption and secretion while also forming a barrier protecting the body from the entry of harmful components. Aquaporin-3 (AQP3) is a water, glycerol and H2O2 transporting channel expressed in colonic epithelia. Although expression of colonic epithelial AQP3 is altered in several intestinal disorders, such as inflammatory bowel disease and irritable bowel syndrome, the regulation and specific roles of AQP3 remain to be fully defined. In this mini-review, we summarize the current understanding of the expression, regulation, and biological functions of AQP3 protein in colonic epithelia concerning intestinal absorption, secretion and barrier function.
Collapse
Affiliation(s)
- Jonathan Yde
- Department of Biomedicine, Aarhus University, Aarhus DK-8000, Denmark
| | - Stephen J Keely
- Molecular Medicine Laboratories, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Hanne B Moeller
- Department of Biomedicine, Aarhus University, Aarhus DK-8000, Denmark.
| |
Collapse
|
23
|
Ala M, Mohammad Jafari R, Hajiabbasi A, Dehpour AR. Aquaporins and diseases pathogenesis: From trivial to undeniable involvements, a disease-based point of view. J Cell Physiol 2021; 236:6115-6135. [PMID: 33559160 DOI: 10.1002/jcp.30318] [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: 05/07/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 01/01/2023]
Abstract
Aquaporins (AQPs), as transmembrane proteins, were primarily identified as water channels with the ability of regulating the transmission of water, glycerol, urea, and other small-sized molecules. The classic view of AQPs involvement in therapeutic plan restricted them and their regulators into managing only a narrow spectrum of the diseases such as diabetes insipidus and the syndrome of inappropriate ADH secretion. However, further investigations performed, especially in the third millennium, has found that their cooperation in water transmission control can be manipulated to handle other burden-imposing diseases such as cirrhosis, heart failure, Meniere's disease, cancer, bullous pemphigoid, eczema, and Sjögren's syndrome.
Collapse
Affiliation(s)
- Moein Ala
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Razieh Mohammad Jafari
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Asghar Hajiabbasi
- Guilan Rheumatology Research Center, Razi Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Ahmad Reza Dehpour
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
24
|
Dickson K, Malitan H, Lehmann C. Imaging of the Intestinal Microcirculation during Acute and Chronic Inflammation. BIOLOGY 2020; 9:E418. [PMID: 33255906 PMCID: PMC7760140 DOI: 10.3390/biology9120418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022]
Abstract
Because of its unique microvascular anatomy, the intestine is particularly vulnerable to microcirculatory disturbances. During inflammation, pathological changes in blood flow, vessel integrity and capillary density result in impaired tissue oxygenation. In severe cases, these changes can progress to multiorgan failure and possibly death. Microcirculation may be evaluated in superficial tissues in patients using video microscopy devices, but these techniques do not allow the assessment of intestinal microcirculation. The gold standard for the experimental evaluation of intestinal microcirculation is intravital microscopy, a technique that allows for the in vivo examination of many pathophysiological processes including leukocyte-endothelial interactions and capillary blood flow. This review provides an overview of changes in the intestinal microcirculation in various acute and chronic inflammatory conditions. Acute conditions discussed include local infections, severe acute pancreatitis, necrotizing enterocolitis and sepsis. Inflammatory bowel disease and irritable bowel syndrome are included as examples of chronic conditions of the intestine.
Collapse
Affiliation(s)
- Kayle Dickson
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| | - Hajer Malitan
- Department of Anesthesia, Pain and Perioperative Management, Dalhousie University, Halifax, NS B3H 4R2, Canada;
| | - Christian Lehmann
- Department of Microbiology and Immunology, Dalhousie University, Halifax, NS B3H 4R2, Canada;
- Department of Anesthesia, Pain and Perioperative Management, Dalhousie University, Halifax, NS B3H 4R2, Canada;
- Department of Physiology and Biophysics, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| |
Collapse
|
25
|
Gao J, Li Y, Yang X, Hu M, Xu J, Cheng L, Cao K, Liu L, Wang X. Changrui enema inhibits inflammation-induced angiogenesis in acute radiation proctitis by regulating NF-κB and VEGF. Acta Cir Bras 2020; 35:e202000502. [PMID: 32638843 PMCID: PMC7341993 DOI: 10.1590/s0102-865020200050000002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 04/22/2020] [Indexed: 02/25/2023] Open
Abstract
Purpose Changrui enema, a traditional Chinese medicine prescription, is used as a supplementary treatment for acute radiation proctitis (ARP). Herein we explored the inhibition effects of Changrui enema on NF-κB and VEGF in ARP mice. Methods A total of 120 C57BL/6 mice were divided randomly into normal mice group, ARP mice group, western medicine enema group (dexamethasone combined with gentamicin), and Changrui enema group. ARP mice were established by pelvic local irradiation. The expression of IL-1β, NF-κB, VEGF, AQP1, AQP3, p-ERK1/2 and p-JNK was determined by immunohistochemistry or western blot. Results The study firstly found that Changrui enema alleviated ARP mice. The expression of IL-1β, NF-κB, VEGF, AQP1 and p-ERK1/2 was increased in ARP mice, and was reserved by Changrui enema. However, the expression of AQP3 and p-JNK was decreased in ARP mice, and was up-regulated by Changrui enema. Conclusions Changrui enema is an effective treatment with fewer side effects for ARP. The mechanism of Changrui enema may be related to the inhibition of inflammation-induced angiogenesis. Changrui enema inhibits IL-1β and NF-κB expression as well as VEGF expression. Interestingly, AQP1 promotes angiogenesis, while AQP3 inhibits inflammation. Changrui enema probably inhibits AQP1 expression by down-regulating p-ERK1/2, and improves AQP3 expression by up-regulating p-JNK.
Collapse
Affiliation(s)
- Jinsheng Gao
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | | | - Xi Yang
- Shanghai University of Traditional Chinese Medicine, China
| | - Min Hu
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | - Jie Xu
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | - Lin Cheng
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | - Kaiqi Cao
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | - Likun Liu
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| | - Xixing Wang
- Shanxi Province Research Institute of Traditional Chinese Medicine, China
| |
Collapse
|
26
|
Escudero-Hernández C, Münch A, Østvik AE, Granlund AVB, Koch S. The Water Channel Aquaporin 8 is a Critical Regulator of Intestinal Fluid Homeostasis in Collagenous Colitis. J Crohns Colitis 2020; 14:962-973. [PMID: 32016376 PMCID: PMC7393183 DOI: 10.1093/ecco-jcc/jjaa020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Diarrhoea is a common, debilitating symptom of gastrointestinal disorders. Pathomechanisms probably involve defects in trans-epithelial water transport, but the role of aquaporin [AQP] family water channels in diarrhoea-predominant diseases is unknown. We investigated the involvement of AQPs in the pathobiology of collagenous colitis [CC], which features chronic, watery diarrhoea despite overtly normal intestinal epithelial cells [IECs]. METHODS We assessed the expression of all AQP family members in mucosal samples of CC patients before and during treatment with the corticosteroid drug budesonide, steroid-refractory CC patients and healthy controls. Samples were analysed by genome-wide mRNA sequencing [RNA-seq] and quantitative real-time PCR [qPCR]. In some patients, we performed tissue microdissection followed by RNA-seq to explore the IEC-specific CC transcriptome. We determined changes in the protein levels of the lead candidates in IEC by confocal microscopy. Finally, we investigated the regulation of AQP expression by corticosteroids in model cell lines. RESULTS Using qPCR and RNA-seq, we identified loss of AQP8 expression as a hallmark of active CC, which was reverted by budesonide treatment in steroid-responsive but not refractory patients. Consistently, decreased AQP8 mRNA and protein levels were observed in IECs of patients with active CC, and steroid drugs increased AQP8 expression in model IECs. Moreover, low APQ8 expression was strongly associated with higher stool frequency in CC patients. CONCLUSION Down-regulation of epithelial AQP8 may impair water resorption in active CC, resulting in watery diarrhoea. Our results suggest that AQP8 is a potential drug target for the treatment of diarrhoeal disorders.
Collapse
Affiliation(s)
| | - Andreas Münch
- Department of Biomedical and Clinical Sciences [BKV), Linköping University, Linköping, Sweden,Division of Gastroenterology and Hepatology, Department of Biomedical and Clinical Sciences [BKV), Faculty of Health Science, Linköpings University, Linköping, Sweden,Corresponding authors: Andreas Münch, MD PhD, Division of Gastroenterology and Hepatology, Department of Biomedical and Clinical Sciences [BKV), Faculty of Health Sciences, Linköping University, Linköping, 58185, Sweden. Tel: +46 100130000; ; Stefan Koch, PhD, BKV/MII—Plan 13, s-581 83 Linköping, Sweden. Tel: +46 13 282969;
| | - Ann-Elisabet Østvik
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,Department of Gastroenterology and Hepatology, St Olav’s University Hospital, Trondheim, Norway,Clinic of Medicine, St Olav’s University Hospital, Trondheim, Norway
| | - Atle van Beelen Granlund
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway,Clinic of Medicine, St Olav’s University Hospital, Trondheim, Norway,Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Stefan Koch
- Department of Biomedical and Clinical Sciences [BKV), Linköping University, Linköping, Sweden,Wallenberg Centre for Molecular Medicine (WCMM), Linköping University, Linköping, Sweden,Corresponding authors: Andreas Münch, MD PhD, Division of Gastroenterology and Hepatology, Department of Biomedical and Clinical Sciences [BKV), Faculty of Health Sciences, Linköping University, Linköping, 58185, Sweden. Tel: +46 100130000; ; Stefan Koch, PhD, BKV/MII—Plan 13, s-581 83 Linköping, Sweden. Tel: +46 13 282969;
| |
Collapse
|
27
|
Moss FJ, Mahinthichaichan P, Lodowski DT, Kowatz T, Tajkhorshid E, Engel A, Boron WF, Vahedi-Faridi A. Aquaporin-7: A Dynamic Aquaglyceroporin With Greater Water and Glycerol Permeability Than Its Bacterial Homolog GlpF. Front Physiol 2020; 11:728. [PMID: 32695023 PMCID: PMC7339978 DOI: 10.3389/fphys.2020.00728] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 06/04/2020] [Indexed: 12/27/2022] Open
Abstract
Xenopus oocytes expressing human aquaporin-7 (AQP7) exhibit greater osmotic water permeability and 3H-glycerol uptake vs. those expressing the bacterial glycerol facilitator GlpF. AQP7-expressing oocytes exposed to increasing extracellular [glycerol] under isosmolal conditions exhibit increasing swelling rates, whereas GlpF-expressing oocytes do not swell at all. To provide a structural basis for these observed physiological differences, we performed X-ray crystallographic structure determination of AQP7 and molecular-dynamics simulations on AQP7 and GlpF. The structure reveals AQP7 tetramers containing two monomers with 3 glycerols, and two monomers with 2 glycerols in the pore. In contrast to GlpF, no glycerol is bound at the AQP7 selectivity filter (SF), comprising residues F74, G222, Y223, and R229. The AQP7 SF is resolved in its closed state because F74 blocks the passage of small solutes. Molecular dynamics simulations demonstrate that F74 undergoes large and rapid conformational changes, allowing glycerol molecules to permeate without orientational restriction. The more rigid GlpF imposes orientational constraints on glycerol molecules passing through the SF. Moreover, GlpF-W48 (analogous to AQP7-F74) undergoes rare but long-lasting conformational changes that block the pore to H2O and glycerol.
Collapse
Affiliation(s)
- Fraser J. Moss
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Paween Mahinthichaichan
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - David T. Lodowski
- Department of Nutrition, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Thomas Kowatz
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Emad Tajkhorshid
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Andreas Engel
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Walter F. Boron
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Department of Biochemistry, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Ardeschir Vahedi-Faridi
- Department of Physiology and Biophysics, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| |
Collapse
|
28
|
Zhu Y, Wang Y, Teng W, Shan Y, Yi S, Zhu S, Li Y. Role of Aquaporin-3 in Intestinal Injury Induced by Sepsis. Biol Pharm Bull 2019; 42:1641-1650. [DOI: 10.1248/bpb.b19-00073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yeke Zhu
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
- Clnical Research Center, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| | - Yefeng Wang
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
- Clnical Research Center, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| | - Wengbin Teng
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
- Clnical Research Center, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| | - Yue Shan
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| | - Shenghua Yi
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| | - Shengmei Zhu
- Department of Anesthesiology, the First Affiliated Hospital of School of Medicine, Zhejiang University
| | - Yuhong Li
- Department of Anesthesiology, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
- Clnical Research Center, Shaoxing People’s Hospital (Shaoxing Hospital of Zhejiang University)
| |
Collapse
|
29
|
Zhu G, Qian M, Lu L, Chen Y, Zhang X, Wu Q, Liu Y, Bian Z, Yang Y, Guo S, Wang J, Pan Q, Sun F. O-GlcNAcylation of YY1 stimulates tumorigenesis in colorectal cancer cells by targeting SLC22A15 and AANAT. Carcinogenesis 2019; 40:1121-1131. [PMID: 30715269 DOI: 10.1093/carcin/bgz010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/02/2019] [Accepted: 01/23/2019] [Indexed: 12/14/2022] Open
Abstract
Emerging studies have revealed that O-GlcNAcylation plays pivotal roles in the tumorigenesis of colorectal cancers (CRCs). However, the underlying mechanism still remains largely unknown. Here, we demonstrated that Yin Yang 1 (YY1) was O-GlcNAcylated by O-GlcNAc transferase (OGT) and O-GlcNAcylation of YY1 could increase the protein expression by enhancing its stability. O-GlcNAcylation facilitated transformative phenotypes of CRC cell in a YY1-dependent manner. Also, O-GlcNAcylation stimulates YY1-dependent transcriptional activity. Besides, we also identified the oncoproteins, SLC22A15 and AANAT, which were regulated by YY1 directly, are responsible for the YY1 stimulated tumorigenesis. Furthermore, we identified the main putative O-GlcNAc site of YY1 at Thr236, and mutating of this site decreased the pro-tumorigenic capacities of YY1. We concluded that O-GlcNAcylation of YY1 stimulates tumorigenesis in CRC cells by targeting SLC22A15 and AANAT, suggesting that YY1 O-GlcNAcylation might be a potential effective therapeutic target for treating CRC.
Collapse
Affiliation(s)
- Guoqing Zhu
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Mingping Qian
- Department of General Surgery, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Liesheng Lu
- Department of General Surgery, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Yan Chen
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Xiao Zhang
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Qi Wu
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Ya Liu
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Zhixuan Bian
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Yueyue Yang
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Susu Guo
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Jiayi Wang
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| | - Qiuhui Pan
- Department of Clinical Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, Dongfang Road, Shanghai, China
| | - Fenyong Sun
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital of Tongji University, Middle Yanchang Road, Shanghai, China
| |
Collapse
|
30
|
de Mello Santos T, Cavariani MM, Pereira DN, Schimming BC, Chuffa LGDA, Domeniconi RF. Maternal Protein Restriction Modulates Angiogenesis and AQP9 Expression Leading to a Delay in Postnatal Epididymal Development in Rat. Cells 2019; 8:cells8091094. [PMID: 31533210 PMCID: PMC6770568 DOI: 10.3390/cells8091094] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/15/2019] [Accepted: 09/02/2019] [Indexed: 12/17/2022] Open
Abstract
The maternal nutritional status is essential to the health and well-being of the fetus. Maternal protein restriction during the perinatal stage causes sperm alterations in the offspring that are associated with epididymal dysfunctions. Vascular endothelial growth factor (VEGF) and its receptor, VEGFr-2, as well as aquaporins (AQPs) are important regulators of angiogenesis and the epididymal microenvironment and are associated with male fertility. We investigated the effects of maternal protein restriction on epididymal angiogenesis and AQP expression in the early stages of postnatal epididymal development. Pregnant rats were divided into two experimental groups that received either a normoprotein (17% protein) or low-protein diet (6% protein) during gestation and lactation. At postnatal day (PND)7 and PND14, male offspring were euthanized, the epididymides were subjected to morphometric and microvascular density analyses and to VEGF-A, VEGF-r2, AQP1 and AQP9 expression analyses. The maternal low-protein diet decreased AQP9 and VEGFr-2 expression, decreased epididymal microvascularity and altered the morphometric features of the epididymal epithelium; no changes in AQP1 expression were observed at the beginning of postnatal epididymal development. Maternal protein restriction alters microvascularization and affects molecules involved in the epidydimal microenvironment, resulting in morphometric alterations related to a delay in the beginning of epididymis postnatal development.
Collapse
Affiliation(s)
- Talita de Mello Santos
- Department of Anatomy, Institute of Biosciences, São Paulo State University-UNESP, Botucatu 18618-970, SP, Brazil.
| | - Marilia Martins Cavariani
- Department of Anatomy, Institute of Biosciences, São Paulo State University-UNESP, Botucatu 18618-970, SP, Brazil.
| | - Dhrielly Natália Pereira
- Department of Anatomy, Institute of Biosciences, São Paulo State University-UNESP, Botucatu 18618-970, SP, Brazil.
| | - Bruno César Schimming
- Department of Anatomy, Institute of Biosciences, São Paulo State University-UNESP, Botucatu 18618-970, SP, Brazil.
| | | | - Raquel Fantin Domeniconi
- Department of Anatomy, Institute of Biosciences, São Paulo State University-UNESP, Botucatu 18618-970, SP, Brazil.
| |
Collapse
|
31
|
Holtan SG, Shabaneh A, Betts BC, Rashidi A, MacMillan ML, Ustun C, Amin K, Vaughn BP, Howard J, Khoruts A, Arora M, DeFor TE, Johnson D, Blazar BR, Weisdorf DJ, Wang J. Stress responses, M2 macrophages, and a distinct microbial signature in fatal intestinal acute graft-versus-host disease. JCI Insight 2019; 5:129762. [PMID: 31393854 DOI: 10.1172/jci.insight.129762] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Steroid-refractory intestinal acute graft-versus-host disease (aGVHD) is a frequently fatal condition with little known about mechanisms driving failed steroid responses in gut mucosa. To uncover novel molecular insights in steroid-refractory aGVHD, we compared gene expression profiles of rectosigmoid biopsies from patients at diagnosis of clinical stage 3-4 lower intestinal aGVHD (N=22), to repeat biopsies when the patients became steroid refractory (N=22), and normal controls (N=10). We also performed single gene analyses of factors associated with tolerance (programmed death ligand-1 [PDL1], indoleamine 2,3 dioxygenase [IDO1], and T cell immunoreceptor with Ig and ITIM domains [TIGIT]) and found that significantly higher expression levels of these aGVHD inhibitory genes (PDL1, IDO1, TIGIT) at aGVHD onset became decreased in the steroid-refractory state. We examined genes triggered by microbial ligands to stimulate gut repair, amphiregulin (AREG) and the aryl hydrocarbon receptor (AhR), and found that both AREG and AhR gene expression levels were increased at aGVHD onset and remained elevated in steroid-refractory aGVHD. We also identified higher expression levels of metallothioneines, metal-binding enzymes induced in stress responses, and M2 macrophage genes in steroid-refractory aGVHD. We observed no differences in T-cell subsets between onset and steroid-refractory aGVHD. Patients with a rapidly fatal course showed greater DNA damage and a distinct microbial signature at aGVHD onset, whereas patients with more prolonged survival exhibited a gene expression profile consistent with activation of Smoothened. Our results extend the paradigm beyond T cell-centric therapies for steroid-refractory GI aGVHD and highlight new mechanisms for therapeutic exploration.
Collapse
Affiliation(s)
| | | | - Brian C Betts
- Blood and Marrow Transplant Program, Department of Medicine
| | - Armin Rashidi
- Blood and Marrow Transplant Program, Department of Medicine
| | - Margaret L MacMillan
- Blood and Marrow Transplant Program, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Celalletin Ustun
- Rush University Blood and Marrow Transplant Program, Chicago, Illinois, USA
| | | | | | - Justin Howard
- Division of Gastroenterology, Department of Medicine
| | | | - Mukta Arora
- Blood and Marrow Transplant Program, Department of Medicine
| | | | | | - Bruce R Blazar
- Blood and Marrow Transplant Program, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA
| | | | - Jinhua Wang
- Cancer Bioinformatics, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, USA
| |
Collapse
|
32
|
Rosa F, Osorio JS. Short communication: Comparative gene expression analysis on the enrichment of polymorphonuclear leukocytes and gastrointestinal epithelial cells in fecal RNA from nondiarrheic neonatal dairy calves. J Dairy Sci 2019; 102:7464-7468. [PMID: 31178184 DOI: 10.3168/jds.2018-16074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/19/2019] [Indexed: 01/03/2023]
Abstract
Increased understanding of the biology of the gastrointestinal tract (GIT) in neonatal dairy calves during their adaptation to an extrauterine environment will decrease health problems such as diarrhea while increasing feed efficiency and average daily gain in preweaned dairy calves. Within this context, a noninvasive method, based on fecal RNA, to study the GIT in neonatal dairy calves through the isolation of RNA from fecal samples for quantitative reverse-transcription PCR analysis can provide valuable information on GIT biological adaptations during the preweaning period. We aimed to evaluate the potential enrichment of RNA from immune cells or GIT epithelial cells during fecal RNA isolation. Eight neonatal Holstein calves less than 3 wk old (14.9 ± 5.5 d of age at sampling ± standard deviation) and a fecal score of 2.0 ± 0.7 (mean ± standard deviation) were used. During a single sampling, fecal and blood samples were taken simultaneously from each calf before the morning feeding. Fecal samples were immediately frozen in liquid nitrogen until RNA isolation, whereas polymorphonuclear leukocytes (PMN) were isolated from blood samples before RNA isolation. An quantitative reverse-transcription PCR analysis was performed using a single standard curve composited of equal amounts of all samples including cDNA from fecal and PMN. The genes myeloperoxidase (MPO) and L-selectin (SELL) were selected for their specific known function in PMN, whereas keratin 8 (KRT8) and aquaporin 3 (AQP3) have been associated with epithelial enterocytes. Our results showed a contrasting gene expression profile between PMN and fecal RNA; whereas greater mRNA expression of SELL was observed in PMN, a greater KRT8 expression was observed in fecal RNA. The mRNA expression of AQP3 tended to be greater in PMN than fecal RNA. Additionally, MPO was not amplified in fecal RNA. Our findings suggest that under nondiarrheic conditions RNA isolated from stool samples of neonatal dairy calves will have a considerable number of GIT epithelial cells, which confirms the reliability of this method under these conditions. However, further research needs to be done to determine if the same effects are observed during diarrhea or throughout the preweaning period of dairy calves.
Collapse
Affiliation(s)
- F Rosa
- Department of Dairy and Food Sciences, South Dakota State University, Brookings 57007
| | - J S Osorio
- Department of Dairy and Food Sciences, South Dakota State University, Brookings 57007.
| |
Collapse
|
33
|
Choi YS, Park JH, Yoon JK, Yoon JS, Kim JS, Lee JH, Yun BH, Park JH, Seo SK, Cho S, Lee BS, Taylor HS. Potential roles of aquaporin 9 in the pathogenesis of endometriosis. ACTA ACUST UNITED AC 2019; 25:373-384. [DOI: 10.1093/molehr/gaz025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 03/09/2019] [Indexed: 12/14/2022]
Abstract
AbstractAquaporins (AQPs) are involved in cell migration, proliferation and carcinogenesis in tumor development and physiologic inflammatory processes, but their associations with endometriosis have not been fully evaluated. In this study, tissue samples were obtained from women undergoing laparoscopic surgery for endometriosis and other benign conditions. Analysis of expressions of AQP subtypes in eutopic and ectopic endometrium of patients with endometriosis (Eu-EMS and Ect-EMS, respectively) and eutopic endometrium of control patients without endometriosis (Eu-CTL) were performed using the NanoString nCounter System and western blotting. Human endometrial stromal cells (HESCs) were cultured and transfected with the siRNA of the AQP of interest. Among the AQP1–9 subtypes, endometrial expression of AQP2 and AQP8 was significantly increased, whereas AQP9 expression was significantly decreased in the Eu-EMS group compared to the Eu-CTL group. Comparison of expression of AQP2, AQP8 and AQP9 among Eu-EMS, Ect-EMS and Eu-CTL groups revealed significant differences for only AQP9. Expression of AQP9 in the Eu-EMS group was decreased compared with that in Eu-CTL. After transfection of AQP9 siRNA in HESCs, expressions of MMP2 and MMP9 were significantly elevated. Increased expression of phosphorylated ERK 1/2 and phosphorylated p38 MAPK proteins after transfection was also confirmed using western blot analysis. Increased migration and invasion potentials of HESCs after transfection were determined by migration and wound healing assays. These findings suggest that AQP9 may be involved in the pathogenesis of endometriosis and warrant further investigation as a potential therapeutic target for treating endometriosis.
Collapse
Affiliation(s)
- Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Hyun Park
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jeong-Kee Yoon
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Sun Yoon
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Sook Kim
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hoon Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Bo Hyun Yun
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Joo Hyun Park
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Kyo Seo
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - SiHyun Cho
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Byung Seok Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Hugh S Taylor
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| |
Collapse
|
34
|
Couch DG, Cook H, Ortori C, Barrett D, Lund JN, O'Sullivan SE. Palmitoylethanolamide and Cannabidiol Prevent Inflammation-induced Hyperpermeability of the Human Gut In Vitro and In Vivo-A Randomized, Placebo-controlled, Double-blind Controlled Trial. Inflamm Bowel Dis 2019; 25:1006-1018. [PMID: 31054246 DOI: 10.1093/ibd/izz017] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND AIMS We aimed to examine, for the first time, the effect of cannabidiol (CBD) and palmitoylethanolamide (PEA) on the permeability of the human gastrointestinal tract in vitro, ex vivo, and in vivo. METHODS Flux measurements of fluorescein-labeled dextrans 10 (FD10) and fluorescein-labeled dextrans 4 (FD4) dextran across Caco-2 cultures treated for 24 hours with interferon gamma (IFNγ) and tumour necrosis factor alpha (TNFα) (10 ng·mL-1) were measured, with or without the presence of CBD and PEA. Mechanisms were investigated using cannabinoid receptor 1 (CB1), cannabinoid receptor 2 (CB2), transient receptor potential vanilloid 1 (TRPV1), and proliferator activated receptors (PPAR) antagonists and protein kinase A (PKA), nitric oxide synthase, phosphoinositide 3-kinases, extracellular signal-regulated kinases (MEK/ERK), adenylyl cyclase, and protein kinase C (PKC) inhibitors. Human colonic mucosal samples collected from bowel resections were treated as previously stated. The receptors TRPV1, PPARα, PPARδ, PPARγ, CB1, CB2, G-coupled protein receptor 55 (GPR55), G-coupled protein receptor 119 (GPR119), and claudins-1, -2, -3, -4, -5, -7, and -8 mRNA were measured using multiplex. Aquaporin 3 and 4 were measured using enzyme-linked immunosorbent assay (ELISA). A randomized, double-blind, controlled-trial assessed the effect of PEA or CBD on the absorption of lactulose and mannitol in humans taking 600 mg of aspirin. Urinary concentrations of these sugars were measured using liquid chromatography mass spectrometry. RESULTS In vitro, PEA, and CBD decreased the inflammation-induced flux of dextrans (P < 0.0001), sensitive to PPARα and CB1 antagonism, respectively. Both PEA and CBD were prevented by PKA, MEK/ERK, and adenylyl cyclase inhibition (P < 0.001). In human mucosa, inflammation decreased claudin-5 mRNA, which was prevented by CBD (P < 0.05). Palmitoylethanolamide and cannabidiol prevented an inflammation-induced fall in TRPV1 and increase in PPARα transcription (P < 0.0001). In vivo, aspirin caused an increase in the absorption of lactulose and mannitol, which were reduced by PEA or CBD (P < 0.001). CONCLUSION Cannabidiol and palmitoylethanolamide reduce permeability in the human colon. These findings have implications in disorders associated with increased gut permeability, such as inflammatory bowel disease.
Collapse
Affiliation(s)
- Daniel G Couch
- Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Derby, United Kingdom
| | - Hollie Cook
- Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Derby, United Kingdom
| | - Catherine Ortori
- Faculty of Science, University of Nottingham, Nottingham, United Kingdom
| | - Dave Barrett
- Faculty of Science, University of Nottingham, Nottingham, United Kingdom
| | - Jonathan N Lund
- Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Derby, United Kingdom
| | - Saoirse E O'Sullivan
- Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, Derby, United Kingdom
| |
Collapse
|
35
|
Dajani S, Saripalli A, Sharma-Walia N. Water transport proteins-aquaporins (AQPs) in cancer biology. Oncotarget 2018; 9:36392-36405. [PMID: 30555637 PMCID: PMC6284741 DOI: 10.18632/oncotarget.26351] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 10/22/2018] [Indexed: 02/06/2023] Open
Abstract
As highly conserved ubiquitous proteins, aquaporins (AQPs) play an imperative role in the development and progression of cancer. By trafficking water and other small molecules, AQPs play a vital role in preserving the cellular environment. Due to their critical role in cell stability and integrity, it would make sense that AQPs are involved in cancer progression. When AQPs alter the cellular environment, there may be several downstream effects such as alterations in cellular osmolality, volume, ionic composition, and signaling pathways. Changes in the intracellular levels of certain molecules serving as second messengers are synchronized by AQPs. Thus AQPs regulate numerous downstream effector signaling molecules that promote cancer development and progression. In numerous cancer types, AQP expression has shown a correlation with tumor stage and prognosis. Furthermore, AQPs assist in angiogenic and oxidative stress related damaging processes critical for cancer progression. This indicates that AQP proteins may be a viable therapeutic target or biomarker of cancer prognosis.
Collapse
Affiliation(s)
- Salah Dajani
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Anand Saripalli
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| | - Neelam Sharma-Walia
- H.M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, Illinois, USA
| |
Collapse
|
36
|
Cao Y, He Y, Wei C, Li J, Qu L, Zhang H, Cheng Y, Qiao B. Aquaporins Alteration Profiles Revealed Different Actions of Senna, Sennosides, and Sennoside A in Diarrhea-Rats. Int J Mol Sci 2018; 19:E3210. [PMID: 30336596 PMCID: PMC6213963 DOI: 10.3390/ijms19103210] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/21/2018] [Accepted: 10/12/2018] [Indexed: 01/18/2023] Open
Abstract
Senna and its main components sennosides are well-known effective laxative drugs and are used in the treatment of intestinal constipation in the world. Their potential side effects have attracted more attention in clinics but have little scientific justification. In this study, senna extract (SE), sennosides (SS), and sennoside A (SA) were prepared and used to generate diarrhea rats. The diarrhea rats were investigated with behaviors, clinical signs, organ index, pathological examination, and gene expression on multiple aquaporins (Aqps) including Aqp1, Aqp2, Aqp3, Aqp4, Aqp5, Aqp6, Aqp7, Aqp8, Aqp9, and Aqp11. Using qRT-PCR, the Aqp expression profiles were constructed for six organs including colon, kidney, liver, spleen, lung, and stomach. The Aqp alteration profiles were characterized and was performed with Principle Component Analysis (PCA). The SE treatments on the rats resulted in a significant body weight loss (p < 0.001), significant increases (p < 0.001) on the kidney index (27.72%) and liver index (42.55%), and distinguished changes with up-regulation on Aqps expressions in the kidneys and livers. The SS treatments showed prominent laxative actions and down regulation on Aqps expression in the colons. The study results indicated that the SE had more influence/toxicity on the kidneys and livers. The SS showed more powerful actions on the colons. We suggest that the caution should be particularly exercised in the patients with kidney and liver diseases when chronic using senna-based products.
Collapse
Affiliation(s)
- Yixin Cao
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Ying He
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Cong Wei
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Jing Li
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Lejing Qu
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Huiqin Zhang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Ying Cheng
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| | - Boling Qiao
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an 710069, China.
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an 710069, China.
| |
Collapse
|
37
|
Aquaporin Membrane Channels in Oxidative Stress, Cell Signaling, and Aging: Recent Advances and Research Trends. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:1501847. [PMID: 29770164 PMCID: PMC5892239 DOI: 10.1155/2018/1501847] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 01/29/2018] [Accepted: 02/20/2018] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS) are produced as a result of aerobic metabolism and as by-products through numerous physiological and biochemical processes. While ROS-dependent modifications are fundamental in transducing intracellular signals controlling pleiotropic functions, imbalanced ROS can cause oxidative damage, eventually leading to many chronic diseases. Moreover, increased ROS and reduced nitric oxide (NO) bioavailability are main key factors in dysfunctions underlying aging, frailty, hypertension, and atherosclerosis. Extensive investigation aims to elucidate the beneficial effects of ROS and NO, providing novel insights into the current medical treatment of oxidative stress-related diseases of high epidemiological impact. This review focuses on emerging topics encompassing the functional involvement of aquaporin channel proteins (AQPs) and membrane transport systems, also allowing permeation of NO and hydrogen peroxide, a major ROS, in oxidative stress physiology and pathophysiology. The most recent advances regarding the modulation exerted by food phytocompounds with antioxidant action on AQPs are also reviewed.
Collapse
|
38
|
Meli R, Pirozzi C, Pelagalli A. New Perspectives on the Potential Role of Aquaporins (AQPs) in the Physiology of Inflammation. Front Physiol 2018; 9:101. [PMID: 29503618 PMCID: PMC5820367 DOI: 10.3389/fphys.2018.00101] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/31/2018] [Indexed: 12/19/2022] Open
Abstract
Aquaporins (AQPs) are emerging, in the last few decades, as critical proteins regulating water fluid homeostasis in cells involved in inflammation. AQPs represent a family of ubiquitous membrane channels that regulate osmotically water flux in various tissues and sometimes the transport of small solutes, including glycerol. Extensive data indicate that AQPs, working as water channel proteins, regulate not only cell migration, but also common events essential for inflammatory response. The involvement of AQPs in several inflammatory processes, as demonstrated by their dysregulation both in human and animal diseases, identifies their new role in protection and response to different noxious stimuli, including bacterial infection. This contribution could represent a new key to clarify the dilemma of host-pathogen communications, and opens up new scenarios regarding the investigation of the modulation of specific AQPs, as target for new pharmacological therapies. This review provides updated information on the underlying mechanisms of AQPs in the regulation of inflammatory responses in mammals and discusses the broad spectrum of options that can be tailored for different diseases and their pharmacological treatment.
Collapse
Affiliation(s)
- Rosaria Meli
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Claudio Pirozzi
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Alessandra Pelagalli
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy.,Institute of Biostructure and Bioimaging, National Research Council (CNR), Naples, Italy
| |
Collapse
|
39
|
Taman H, Fenton CG, Hensel IV, Anderssen E, Florholmen J, Paulssen RH. Transcriptomic Landscape of Treatment-Naïve Ulcerative Colitis. J Crohns Colitis 2018; 12:327-336. [PMID: 29040430 PMCID: PMC6290885 DOI: 10.1093/ecco-jcc/jjx139] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 10/09/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Ulcerative colitis [UC] is a chronic inflammatory disease that effects the gastrointestinal tract and is considered one of the most prominent and common forms of inflammatory bowel disease [IBD]. This study aimed to define and describe the entire transcriptomic landscape in a well-stratified, treatment-naïve UC patient population compared with control patients by using next-generation technology, RNA-Seq. METHODS Mucosal biopsies from treatment-naïve UC patients [n = 14], and healthy controls [n = 16] underwent RNA-Seq. Principal component analysis [PCA], cell deconvolution methods, and diverse statistical methods were applied to obtain and characterise a dataset of significantly differentially expressed genes [DEGs]. RESULTS Analyses revealed 1480 significantly DEGs in treatment-naïve UC when compared with controls. Cell populations of monocytes, T cells, neutrophils, B cells/ lymphoid cells, and myeloid cells were increased during inflammation, whereas the fraction of epithelial cells were reduced in UC, which is reflected by the DEGs; 79 DEGs were identified as IBD susceptibility genes, and 58 DEGs were expressed in a gender-specific manner. MUC5B, REG3A, DEFA5, and IL33 might be considered as colorectal cancer [CRC] risk factors following UC in males. AQP9 together with CLDN2 may have a role regulating tissue-specific physiological properties in tight junctions in UC. An additional functional role for AQP9 in the synthesis and/or the function of mucus can be implied. CONCLUSIONS This study reveals new potential players in UC pathogenesis in general, and provides evidence for a gender-dependent pathogenesis for UC. These results can be useful for the development of personalised treatment strategies for UC in the future.
Collapse
Affiliation(s)
- Hagar Taman
- Genomic Support Centre Tromsø [GSCT], Department of Clinical Medicine, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Christopher G Fenton
- Genomic Support Centre Tromsø [GSCT], Department of Clinical Medicine, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Inga V Hensel
- Genomic Support Centre Tromsø [GSCT], Department of Clinical Medicine, UiT—The Arctic University of Norway, Tromsø, Norway,Gastroenterology and Nutrition Research Group, Department of Clinical Medicine, UiT—The Artic University of Norway, Tromsø, Norway
| | - Endre Anderssen
- Genomic Support Centre Tromsø [GSCT], Department of Clinical Medicine, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Jon Florholmen
- Gastroenterology and Nutrition Research Group, Department of Clinical Medicine, UiT—The Artic University of Norway, Tromsø, Norway,University Hospital of North Norway, Tromsø, Norway
| | - Ruth H Paulssen
- Genomic Support Centre Tromsø [GSCT], Department of Clinical Medicine, UiT—The Arctic University of Norway, Tromsø, Norway,Gastroenterology and Nutrition Research Group, Department of Clinical Medicine, UiT—The Artic University of Norway, Tromsø, Norway,Corresponding author: Ruth H. Paulssen, PhD, Department of Clinical Medicine, Gastroenterology and Nutrition Research Group, UiT—The Arctic University of Norway, Faculty of Health, Sykehusveien 38, N-9038 Tromsø, Norway. Tel.: +47 77 64 54 80;
| |
Collapse
|
40
|
Rosa F, Busato S, Avaroma FC, Linville K, Trevisi E, Osorio JS, Bionaz M. Transcriptional changes detected in fecal RNA of neonatal dairy calves undergoing a mild diarrhea are associated with inflammatory biomarkers. PLoS One 2018; 13:e0191599. [PMID: 29373601 PMCID: PMC5786293 DOI: 10.1371/journal.pone.0191599] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/08/2018] [Indexed: 12/21/2022] Open
Abstract
After birth, a newborn calf has to adapt to an extrauterine life characterized by several physiological changes. In particular, maturation of the gastrointestinal tract in a new environment loaded with potential pathogens, which can predispose neonatal calves to develop diarrhea, and is a major cause of morbidity and mortality during the first 4 wks of life. We aimed to investigate the inflammatory adaptations at a transcriptomic level in the gastrointestinal (GI) tract to a mild diarrhea in neonatal dairy calves using RNA isolated from fresh fecal samples. Eight newborn Jersey male calves were used from birth to 5 wks of age and housed in individual pens. After birth, calves received 1.9 L of colostrum from their respective dams. Calves had ad-libitum access to water and starter grain (22% CP) and were fed twice daily a total of 5.6 L pasteurized whole milk. Starter intake, body weight (BW), fecal score, withers height (WH), and rectal temperature (RT) were recorded throughout the experiment. Blood samples were collected weekly for metabolic and inflammatory profiling from wk 0 to wk 5. Fresh fecal samples were collected weekly and immediately flash frozen until RNA was extracted using a Trizol-based method, and subsequently, an RT-qPCR analysis was performed. Orthogonal contrasts were used to evaluate linear or quadratic effects over time. Starter intake, BW, and WH increased over time. Fecal score was greatest (2.6 ± 0.3) during wk 2. The concentrations of IL-6, ceruloplasmin, and haptoglobin had a positive quadratic effect with maximal concentrations during wk 2, which corresponded to the maximal fecal score observed during the same time. The concentration of serum amyloid A decreased over time. The mRNA expression of the proinflammatory related genes TLR4, TNFA, IL8, and IL1B had a positive quadratic effect of time. A time effect was observed for the cell membrane sodium-dependent glucose transporter SLC5A1, for the major carbohydrate facilitated transporter SLC2A2, and water transport function AQP3, where SLC5A1 and AQP3 had a negative quadratic effect over time. Our data support the use of the fecal RNA as a noninvasive tool to investigate intestinal transcriptomic profiling of dairy calves experiencing diarrhea, which would be advantageous for future research including nutritional effects and health conditions.
Collapse
Affiliation(s)
- Fernanda Rosa
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, United States of America
| | - Sebastiano Busato
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, United States of America
| | - Fatima C. Avaroma
- Escuela Agrícola Panamericana El Zamorano, El Zamorano, Francisco Morazán, Honduras
| | - Kali Linville
- Department of Dairy and Food Sciences, South Dakota State University, Brookings, South Dakota, United States of America
| | - Erminio Trevisi
- Istituto di Zootecnica, Facoltà di Scienze Agrarie, Alimentari e Ambientali, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Johan S. Osorio
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, United States of America
- * E-mail:
| | - Massimo Bionaz
- Department of Animal and Rangeland Sciences, Oregon State University, Corvallis, Oregon, United States of America
| |
Collapse
|
41
|
Peplowski MA, Vegso AJ, Iablokov V, Dicay M, Zaheer RS, Renaux B, Proud D, Hollenberg MD, Beck PL, MacNaughton WK. Tumor necrosis factor α decreases aquaporin 3 expression in intestinal epithelial cells through inhibition of constitutive transcription. Physiol Rep 2017; 5:5/19/e13451. [PMID: 29038361 PMCID: PMC5641937 DOI: 10.14814/phy2.13451] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/21/2017] [Accepted: 08/24/2017] [Indexed: 01/08/2023] Open
Abstract
Inflammatory diseases of the gut are associated with altered electrolyte and water transport, leading to the development of diarrhea. Epithelially expressed aquaporins (AQPs) are downregulated in inflammation, although the mechanisms involved are not known. We hypothesized that AQP3 expression in intestinal epithelial cells is altered in intestinal inflammation and that these changes are driven by tumor necrosis factor (TNF) α. Human colonic adenocarcinoma (HT‐29) cells were treated with TNFα to investigate signaling mechanisms in vitro. AQP3 expression was assessed by real‐time PCR and radiolabeled glycerol uptake, with select inhibitors and a luciferase reporter construct used to further elucidate intracellular signaling. AQP3 expression was downregulated in HT‐29 cells treated with TNFα. Luciferase reporter construct experiments revealed that TNFα downregulated constitutive transcriptional activity of the AQP3 promoter, and inhibition of MEK/ERK and nuclear factor κB (NF‐κB) signaling prevented the decrease in AQP3 mRNA expression. Constitutive AQP3 expression was suppressed by specificity protein (Sp) 3, and knockdown of this transcription factor bound to the AQP3 promoter was able to partially prevent the TNFα‐induced downregulation of AQP3. TNFα signals through MEK/ERK and NF‐κB to enhance the negative transcriptional control of AQP3 expression exerted by Sp3. Similar mechanisms regulate numerous ion channels, suggesting a common mechanism by which both ion and water transport are altered in inflammation.
Collapse
Affiliation(s)
- Michael A Peplowski
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Andrew J Vegso
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Vadim Iablokov
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Michael Dicay
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Raza S Zaheer
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Bernard Renaux
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - David Proud
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Morley D Hollenberg
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Paul L Beck
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Wallace K MacNaughton
- Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
42
|
Shashikanth N, Yeruva S, Ong MLDM, Odenwald MA, Pavlyuk R, Turner JR. Epithelial Organization: The Gut and Beyond. Compr Physiol 2017; 7:1497-1518. [DOI: 10.1002/cphy.c170003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
43
|
Aquaporin-3 deletion in mice results in renal collecting duct abnormalities and worsens ischemia-reperfusion injury. Biochim Biophys Acta Mol Basis Dis 2017; 1863:1231-1241. [PMID: 28344130 DOI: 10.1016/j.bbadis.2017.03.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/15/2017] [Accepted: 03/22/2017] [Indexed: 12/15/2022]
Abstract
Aquaporin-3 (AQP3), a transporter of water, glycerol and H2O2, is expressed in basolateral membranes of principal cells in kidney collecting duct. Here, we report that AQP3 deletion in mice affects renal function and modulates renal injury. We found collecting duct hyperplasia and cell swelling in kidneys of adult AQP3 null mice. After mild renal ischemia-reperfusion (IR), AQP3 null mice had significantly greater blood urea nitrogen (57mg/dl) and creatinine (136μM) than wild-type mice (35mg/dl and 48μM, respectively), and showed renal morphological changes, including tubular dilatation, erythrocyte diapedesis and collecting duct incompletion. MPO, MDA and SOD following IR in AQP3 null mice were significantly different from that in wild-type mice (1.7U/g vs 0.8U/g, 3.9μM/g vs 2.4μM/g, 6.4U/mg vs 11U/mg, respectively). Following IR, AQP3 deletion inhibited activation of mitogen-activated protein kinase (MAPK) signaling and produced an increase in the ratios of Bax/Bcl-2, cleaved caspase-3/caspase-3 and p-p53/p53. Studies in transfected MDCK cells showed that AQP3 expression attenuated reduced cell viability following hypoxia-reoxygenation, with reduced apoptosis and increased MAPK signaling. Our results support a novel role for AQP3 in modulating renal injury and suggest the mechanisms involved in protection against hypoxic injury.
Collapse
|
44
|
Aquaporin-3 mediates hydrogen peroxide-dependent responses to environmental stress in colonic epithelia. Proc Natl Acad Sci U S A 2017; 114:568-573. [PMID: 28049834 PMCID: PMC5255594 DOI: 10.1073/pnas.1612921114] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The colonic epithelium provides an essential barrier against the environment that is critical for protecting the body and controlling inflammation. In response to injury or gut microbes, colonic epithelial cells produce extracellular hydrogen peroxide (H2O2), which acts as a potent signaling molecule affecting barrier function and host defense. In humans, impaired regulation of H2O2 in the intestine has been associated with early-onset inflammatory bowel disease and colon cancer. Here, we show that signal transduction by H2O2 depends on entry into the cell by transit through aquaporin-3 (AQP3), a plasma membrane H2O2-conducting channel. In response to injury, AQP3-depleted colonic epithelial cells showed defective lamellipodia, focal adhesions, and repair after wounding, along with impaired H2O2 responses after exposure to the intestinal pathogen Citrobacter rodentium Correspondingly, AQP3-/- mice showed impaired healing of superficial wounds in the colon and impaired mucosal innate immune responses against C. rodentium infection, manifested by reduced crypt hyperplasia, reduced epithelial expression of IL-6 and TNF-α, and impaired bacterial clearance. These results elucidate the signaling mechanism of extracellular H2O2 in the colonic epithelium and implicate AQP3 in innate immunity at mucosal surfaces.
Collapse
|
45
|
Hu H, Kortner TM, Gajardo K, Chikwati E, Tinsley J, Krogdahl Å. Intestinal Fluid Permeability in Atlantic Salmon (Salmo salar L.) Is Affected by Dietary Protein Source. PLoS One 2016; 11:e0167515. [PMID: 27907206 PMCID: PMC5132168 DOI: 10.1371/journal.pone.0167515] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/15/2016] [Indexed: 12/05/2022] Open
Abstract
In Atlantic salmon (Salmo salar L.), and also in other fish species, certain plant protein ingredients can increase fecal water content creating a diarrhea-like condition which may impair gut function and reduce fish growth. The present study aimed to strengthen understanding of the underlying mechanisms by observing effects of various alternative plant protein sources when replacing fish meal on expression of genes encoding proteins playing key roles in regulation of water transport across the mucosa of the distal intestine (DI). A 48-day feeding trial was conducted with five diets: A reference diet (FM) in which fish meal (72%) was the only protein source; Diet SBMWG with a mix of soybean meal (30%) and wheat gluten (22%); Diet SPCPM with a mix of soy protein concentrate (30%) and poultry meal (6%); Diet GMWG with guar meal (30%) and wheat gluten (14.5%); Diet PM with 58% poultry meal. Compared to fish fed the FM reference diet, fish fed the soybean meal containing diet (SBMWG) showed signs of enteritis in the DI, increased fecal water content of DI chyme and higher plasma osmolality. Altered DI expression of a battery of genes encoding aquaporins, ion transporters, tight junction and adherens junction proteins suggested reduced transcellular transport of water as well as a tightening of the junction barrier in fish fed the SBMWG diet, which may explain the observed higher fecal water content and plasma osmolality. DI structure was not altered for fish fed the other experimental diets but alterations in target gene expression and fecal water content were observed, indicating that alterations in water transport components may take place without clear effects on intestinal structure.
Collapse
Affiliation(s)
- Haibin Hu
- Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture) & Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, Qingdao, Shandong, P. R. China
| | - Trond M. Kortner
- Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Karina Gajardo
- Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Elvis Chikwati
- Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| | - John Tinsley
- BioMar Ltd., Grangemouth Docks, Grangemouth, United Kingdom
| | - Åshild Krogdahl
- Department of Basic Sciences and Aquatic Medicine, Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences, Oslo, Norway
| |
Collapse
|
46
|
Yde J, Keely S, Wu Q, Borg JF, Lajczak N, O'Dwyer A, Dalsgaard P, Fenton RA, Moeller HB. Characterization of AQPs in Mouse, Rat, and Human Colon and Their Selective Regulation by Bile Acids. Front Nutr 2016; 3:46. [PMID: 27777930 PMCID: PMC5056181 DOI: 10.3389/fnut.2016.00046] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 09/26/2016] [Indexed: 12/12/2022] Open
Abstract
In normal individuals, the epithelium of the colon absorbs 1.5–2 l of water a day to generate dehydrated feces. However, in the condition of bile acid malabsorption (BAM), an excess of bile acids in the colon results in diarrhea. Several studies have attempted to address the mechanisms contributing to BAM induced by various bile acids. However, none have addressed a potential dysregulation of aquaporin (AQP) water channels, which are responsible for the majority of transcellular water transport in epithelial cells, as a contributing factor to the onset of diarrhea and the pathogenesis of BAM. In this study, we aimed to systematically analyze the expression of AQPs in colonic epithelia from rat, mouse, and human and determine whether their expression is altered in a rat model of BAM. Mass spectrometry-based proteomics, RT-PCR, and western blotting identified various AQPs in isolated colonic epithelial cells from rats (AQP1, 3, 4, 7, 8) and mice (AQP1, 4, 8). Several AQPs were also detected in human colon (AQP1, 3, 4, 7–9). Immunohistochemistry localized AQP1 to the apical plasma membrane of epithelial cells in the bottom of the crypts, whereas AQP3 (rat, human) and AQP4 (mice, human) were localized predominantly in the basolateral plasma membrane. AQP8 was localized intracellularly and at the apical plasma membrane of epithelial cells. Rats fed sodium cholate for 72 h had significantly increased fecal water content, suggesting development of BAM-associated diarrhea. Colonic epithelial cells isolated from this model had significantly altered levels of AQP3, 7, and 8, suggesting that these AQPs may be involved in the pathogenesis of bile acid-induced diarrhea.
Collapse
Affiliation(s)
- Jonathan Yde
- Department of Biomedicine, InterPrET Center, Aarhus University , Aarhus , Denmark
| | - Stephen Keely
- RCSI Education and Research Centre, Royal College of Surgeons in Ireland, Beaumont Hospital , Dublin , Ireland
| | - Qi Wu
- Department of Biomedicine, InterPrET Center, Aarhus University , Aarhus , Denmark
| | - Johan F Borg
- Department of Biomedicine, InterPrET Center, Aarhus University , Aarhus , Denmark
| | - Natalia Lajczak
- RCSI Education and Research Centre, Royal College of Surgeons in Ireland, Beaumont Hospital , Dublin , Ireland
| | - Aoife O'Dwyer
- RCSI Education and Research Centre, Royal College of Surgeons in Ireland, Beaumont Hospital , Dublin , Ireland
| | | | - Robert A Fenton
- Department of Biomedicine, InterPrET Center, Aarhus University , Aarhus , Denmark
| | - Hanne B Moeller
- Department of Biomedicine, InterPrET Center, Aarhus University , Aarhus , Denmark
| |
Collapse
|
47
|
Bajic JE, Eden GL, Lampton LS, Cheah KY, Lymn KA, Pei JV, Yool AJ, Howarth GS. Rhubarb extract partially improves mucosal integrity in chemotherapy-induced intestinal mucositis. World J Gastroenterol 2016; 22:8322-8333. [PMID: 27729739 PMCID: PMC5055863 DOI: 10.3748/wjg.v22.i37.8322] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 07/07/2016] [Accepted: 08/08/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effects of orally gavaged aqueous rhubarb extract (RE) on 5-fluorouracil (5-FU)-induced intestinal mucositis in rats.
METHODS Female Dark Agouti rats (n = 8/group) were gavaged daily (1 mL) with water, high-dose RE (HDR; 200 mg/kg) or low-dose RE (LDR; 20mg/kg) for eight days. Intestinal mucositis was induced (day 5) with 5-FU (150 mg/kg) via intraperitoneal injection. Intestinal tissue samples were collected for myeloperoxidase (MPO) activity and histological examination. Xenopus oocytes expressing aquaporin 4 water channels were prepared to examine the effect of aqueous RE on cell volume, indicating a potential mechanism responsible for modulating net fluid absorption and secretion in the gastrointestinal tract. Statistical significance was assumed at P < 0.05 by one-way ANOVA.
RESULTS Bodyweight was significantly reduced in rats administered 5-FU compared to healthy controls (P < 0.01). Rats administered 5-FU significantly increased intestinal MPO levels (≥ 307%; P < 0.001), compared to healthy controls. However, LDR attenuated this effect in 5-FU treated rats, significantly decreasing ileal MPO activity (by 45%; P < 0.05), as compared to 5-FU controls. 5-FU significantly reduced intestinal mucosal thickness (by ≥ 29% P < 0.001) as compared to healthy controls. LDR significantly increased ileal mucosal thickness in 5-FU treated rats (19%; P < 0.05) relative to 5-FU controls. In xenopus oocytes expressing AQP4 water channels, RE selectively blocked water influx into the cell, induced by a decrease in external osmotic pressure. As water efflux was unaltered by the presence of extracellular RE, the directional flow of water across the epithelial barrier, in the presence of extracellular RE, indicated that RE may alleviate water loss across the epithelial barrier and promote intestinal health in chemotherapy-induced intestinal mucositis.
CONCLUSION In summary, low dose RE improves selected parameters of mucosal integrity and reduces ileal inflammation, manifesting from 5-FU-induced intestinal mucositis.
Collapse
|
48
|
Schieffer KM, Williams ED, Yochum GS, Koltun WA. Review article: the pathogenesis of pouchitis. Aliment Pharmacol Ther 2016; 44:817-35. [PMID: 27554912 PMCID: PMC5785099 DOI: 10.1111/apt.13780] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 12/03/2015] [Accepted: 08/04/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND A total proctocolectomy followed by ileal pouch-anal anastomosis is a potentially curative surgery for ulcerative colitis or familial adenomatous polyposis. About 5-35% of patients with ulcerative colitis and 0-11% of patients with familial adenomatous polyposis develop subsequent inflammation of the ileal pouch termed pouchitis. AIM To provide a comprehensive analysis of the research studying the possible pathogenesis of pouchitis. The goals were to identify promising areas of investigation, to help focus clinicians, researchers and patients on how to better understand and then potentially manage ileal pouchitis, and to provide avenues for future research investigations. METHODS This review examined manuscripts from 1981 to 2015 that discussed and/or proposed hypotheses with supportive evidence for the potential underlying pathogenic mechanism for pouchitis. RESULTS The pathogenesis of pouchitis is not definitively understood, but various hypotheses have been proposed, including (i) recurrence of ulcerative colitis, (ii) dysbiosis of the ileal pouch microbiota, (iii) deprivation of nutritional short-chain fatty acids, (iv) mucosal ischaemia and oxygen-free radical injury, (v) host genetic susceptibility and (vi) immune dysregulation. However, none of these alone are able to fully explain pouchitis pathogenesis. CONCLUSIONS Pouchitis, similar to inflammatory bowel disease, is a complex disorder that is not caused by any one single factor. More likely, pouchitis occurs through a combination of both dysregulated host inflammatory mechanisms and interaction with luminal microbiota.
Collapse
Affiliation(s)
- Kathleen M. Schieffer
- Department of Surgery, Division of Colon and Rectal Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA, USA 17033
| | - Emmanuelle D. Williams
- Department of Medicine, Division of Gastroenterology, The Pennsylvania State University, College of Medicine, Hershey, PA, USA 17033
| | - Gregory S. Yochum
- Department of Surgery, Division of Colon and Rectal Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA, USA 17033,Department of Biochemistry & Molecular Biology, The Pennsylvania State University, College of Medicine, Hershey, PA, USA 17033
| | - Walter A. Koltun
- Department of Surgery, Division of Colon and Rectal Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA, USA 17033
| |
Collapse
|
49
|
Karwad MA, Macpherson T, Wang B, Theophilidou E, Sarmad S, Barrett DA, Larvin M, Wright KL, Lund JN, O'Sullivan SE. Oleoylethanolamine and palmitoylethanolamine modulate intestinal permeability in vitro via TRPV1 and PPARα. FASEB J 2016; 31:469-481. [PMID: 27623929 DOI: 10.1096/fj.201500132] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 08/15/2016] [Indexed: 12/26/2022]
Abstract
Cannabinoids modulate intestinal permeability through cannabinoid receptor 1 (CB1). The endocannabinoid-like compounds oleoylethanolamine (OEA) and palmitoylethanolamine (PEA) play an important role in digestive regulation, and we hypothesized they would also modulate intestinal permeability. Transepithelial electrical resistance (TEER) was measured in human Caco-2 cells to assess permeability after application of OEA and PEA and relevant antagonists. Cells treated with OEA and PEA were stained for cytoskeletal F-actin changes and lysed for immunoassay. OEA and PEA were measured by liquid chromatography-tandem mass spectrometry. OEA (applied apically, logEC50 -5.4) and PEA (basolaterally, logEC50 -4.9; apically logEC50 -5.3) increased Caco-2 resistance by 20-30% via transient receptor potential vanilloid (TRPV)-1 and peroxisome proliferator-activated receptor (PPAR)-α. Preventing their degradation (by inhibiting fatty acid amide hydrolase) enhanced the effects of OEA and PEA. OEA and PEA induced cytoskeletal changes and activated focal adhesion kinase and ERKs 1/2, and decreased Src kinases and aquaporins 3 and 4. In Caco-2 cells treated with IFNγ and TNFα, OEA (via TRPV1) and PEA (via PPARα) prevented or reversed the cytokine-induced increased permeability compared to vehicle (0.1% ethanol). PEA (basolateral) also reversed increased permeability when added 48 or 72 h after cytokines (P < 0.001, via PPARα). Cellular and secreted levels of OEA and PEA (P < 0.001-0.001) were increased in response to inflammatory mediators. OEA and PEA have endogenous roles and potential therapeutic applications in conditions of intestinal hyperpermeability and inflammation.-Karwad, M. A., Macpherson, T., Wang, B., Theophilidou, E., Sarmad, S., Barrett, D. A., Larvin, M., Wright, K. L., Lund, J. N., O'Sullivan, S. E. Oleoylethanolamine and palmitoylethanolamine modulate intestinal permeability in vitro via TRPV1 and PPARα.
Collapse
Affiliation(s)
- Mustafa A Karwad
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Tara Macpherson
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Bo Wang
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Elena Theophilidou
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Sarir Sarmad
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom; and
| | - David A Barrett
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom; and
| | - Michael Larvin
- Graduate Entry Medical School, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Karen L Wright
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Jonathan N Lund
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Saoirse E O'Sullivan
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom;
| |
Collapse
|
50
|
Expression, Distribution and Role of Aquaporin Water Channels in Human and Animal Stomach and Intestines. Int J Mol Sci 2016; 17:ijms17091399. [PMID: 27589719 PMCID: PMC5037679 DOI: 10.3390/ijms17091399] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 08/09/2016] [Accepted: 08/22/2016] [Indexed: 12/22/2022] Open
Abstract
Stomach and intestines are involved in the secretion of gastrointestinal fluids and the absorption of nutrients and fluids, which ensure normal gut functions. Aquaporin water channels (AQPs) represent a major transcellular route for water transport in the gastrointestinal tract. Until now, at least 11 AQPs (AQP1–11) have been found to be present in the stomach, small and large intestines. These AQPs are distributed in different cell types in the stomach and intestines, including gastric epithelial cells, gastric glands cells, absorptive epithelial cells (enterocytes), goblet cells and Paneth cells. AQP1 is abundantly distributed in the endothelial cells of the gastrointestinal tract. AQP3 and AQP4 are mainly distributed in the basolateral membrane of epithelial cells in the stomach and intestines. AQP7, AQP8, AQP10 and AQP11 are distributed in the apical of enterocytes in the small and large intestines. Although AQP-null mice displayed almost no phenotypes in gastrointestinal tracts, the alterations of the expression and localization of these AQPs have been shown to be associated with the pathology of gastrointestinal disorders, which suggests that AQPs play important roles serving as potential therapeutic targets. Therefore, this review provides an overview of the expression, localization and distribution of AQPs in the stomach, small and large intestine of human and animals. Furthermore, this review emphasizes the potential roles of AQPs in the physiology and pathophysiology of stomach and intestines.
Collapse
|