Regulation of Tight Junctions in Upper Airway Epithelium
Takashi Kojima,Mitsuru Go,Kenichi Takano,Makoto Kurose,Tsuyoshi Ohkuni,Jun-ichi Koizumi,Ryuta Kamekura,Noriko Ogasawara,Tomoyuki Masaki,Jun Fuchimoto,Kazufumi Obata,Satoshi Hirakawa,Kazuaki Nomura,Takashi Keira,Ryou Miyata,Nobuhiro Fujii,Hiroyuki Tsutsumi,Tetsuo Himi,Norimasa Sawada +18 more
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TLDR
Recent progress in the understanding of the regulation of tight junctions in the upper airway epithelium under normal, allergic, and RSV-infected conditions is summarized.Abstract:
The mucosal barrier of the upper respiratory tract including the nasal cavity, which is the first site of exposure to inhaled antigens, plays an important role in host defense in terms of innate immunity and is regulated in large part by tight junctions of epithelial cells. Tight junction molecules are expressed in both M cells and dendritic cells as well as epithelial cells of upper airway. Various antigens are sampled, transported, and released to lymphocytes through the cells in nasal mucosa while they maintain the integrity of the barrier. Expression of tight junction molecules and the barrier function in normal human nasal epithelial cells (HNECs) are affected by various stimuli including growth factor, TLR ligand, and cytokine. In addition, epithelial-derived thymic stromal lymphopoietin (TSLP), which is a master switch for allergic inflammatory diseases including allergic rhinitis, enhances the barrier function together with an increase of tight junction molecules in HNECs. Furthermore, respiratory syncytial virus infection in HNECs in vitro induces expression of tight junction molecules and the barrier function together with proinflammatory cytokine release. This paper summarizes the recent progress in our understanding of the regulation of tight junctions in the upper airway epithelium under normal, allergic, and RSV-infected conditions.read more
Citations
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Regulation of Bronchial Epithelial Barrier Integrity by Type 2 Cytokines and Histone Deacetylases in Asthmatic Patients
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References
More filters
Journal ArticleDOI
Recognition of double-stranded RNA and activation of NF-kappaB by Toll-like receptor 3.
TL;DR: It is shown that mammalian TLR3 recognizes dsRNA, and that activation of the receptor induces the activation of NF-κB and the production of type I interferons (IFNs).
Journal ArticleDOI
Toll-like receptor control of the adaptive immune responses.
Akiko Iwasaki,Ruslan Medzhitov +1 more
TL;DR: Recognition of microbial infection and initiation of host defense responses is controlled by multiple mechanisms and recent studies have provided important clues about the mechanisms of TLR-mediated control of adaptive immunity orchestrated by dendritic cell populations in distinct anatomical locations.
Journal ArticleDOI
Toll-like receptors in innate immunity.
Kiyoshi Takeda,Shizuo Akira +1 more
TL;DR: Toll-like receptors-mediated activation of innate immunity controls not only host defense against pathogens but also immune disorders, and the involvement of TLR-mediated pathways in autoimmune and inflammatory diseases has been proposed.
Journal ArticleDOI
Occludin: a novel integral membrane protein localizing at tight junctions.
TL;DR: An integral membrane protein localizing at tight junctions is now identified, which is designated as "occludin," which was revealed by a hydrophilicity plot that was very similar to that of connexin, an integral membraneprotein in gap junctions.
Journal ArticleDOI
Dendritic cells express tight junction proteins and penetrate gut epithelial monolayers to sample bacteria.
Maria Rescigno,Matteo Urbano,Barbara Valzasina,Maura Francolini,Gianluca Rotta,Roberto Bonasio,Francesca Granucci,Jean Pierre Kraehenbuhl,Paola Ricciardi-Castagnoli +8 more
TL;DR: A new mechanism for bacterial uptake in the mucosa tissues that is mediated by dendritic cells (DCs) is reported, which open the tight junctions between epithelial cells, send dendrites outside the epithelium and directly sample bacteria.
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