In-Depth Study of Transmembrane Mucins in Association with Intestinal Barrier Dysfunction During the Course of T Cell Transfer and DSS-Induced Colitis

Autor:	Breugelmans, Tom, Van Spaendonk, Hanne, de Man, Joris, de Schepper, Heiko, Jauregui, Aranzazu, Macken, Elisabeth, Lindén, Sara K., Pintelon, Isabel, Timmermans, Jean-Pierre, De Winter, Benedicte, Smet, Annemieke, Linden, Sara K.
Rok vydání:	2020
Předmět:	SCRIB CD4-Positive T-Lymphocytes Male T cell Interleukin-1beta Mice SCID Inflammatory bowel disease digestive system Permeability Crohn Disease medicine Animals Humans Colitis Intestinal Mucosa Myosin-Light-Chain Kinase Barrier function MUC1 Peroxidase Mice Inbred BALB C Intestinal permeability Tight Junction Proteins business.industry Interleukin-6 Tumor Necrosis Factor-alpha Mucin Dextran Sulfate Gastroenterology Mucins Dextrans General Medicine medicine.disease digestive system diseases Actins Interleukin-10 Disease Models Animal medicine.anatomical_structure Cancer research Cytokines Colitis Ulcerative Female Human medicine business Cell Adhesion Molecules Fluorescein-5-isothiocyanate
Zdroj:	Journal of Crohn's and colitis
ISSN:	1876-4479 1873-9946
Popis:	Background and Aims There is evidence for a disturbed intestinal barrier function in inflammatory bowel diseases [IBD] but the underlying mechanisms are unclear. Because mucins represent the major components of the mucus barrier and disturbed mucin expression is reported in the colon of IBD patients, we studied the association between mucin expression, inflammation and intestinal permeability in experimental colitis. Methods We quantified 4-kDa FITC-dextran intestinal permeability and the expression of cytokines, mucins, junctional and polarity proteins at dedicated time points in the adoptive T cell transfer and dextran sodium sulfate [DSS]-induced colitis models. Mucin expression was also validated in biopsies from IBD patients. Results In both animal models, the course of colitis was associated with increased interleukin-1β [IL-1β] and tumour necrosis factor-α [TNF-α] expression and increased Muc1 and Muc13 expression. In the T cell transfer model, a gradually increasing Muc1 expression coincided with gradually increasing 4-kDa FITC-dextran intestinal permeability and correlated with enhanced IL-1β expression. In the DSS model, Muc13 expression coincided with rapidly increased 4-kDa FITC-dextran intestinal permeability and correlated with TNF-α and Muc1 overexpression. Moreover, a significant association was observed between Muc1, Cldn1, Ocln, Par3 and aPKCζ expression in the T cell transfer model and between Muc13, Cldn1, Jam2, Tjp2, aPkcζ, Crb3 and Scrib expression in the DSS model. Additionally, MUC1 and MUC13 expression was upregulated in inflamed mucosa of IBD patients. Conclusions Aberrantly expressed MUC1 and MUC13 might be involved in intestinal barrier dysfunction upon inflammation by affecting junctional and cell polarity proteins, indicating their potential as therapeutic targets in IBD.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81b08c90beae13d79525ae292bf74274 https://pubmed.ncbi.nlm.nih.gov/32003421 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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