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The cytokine thymic stromal lymphopoietin (TSLP) has been implicated in the development and progression of allergic diseases such as atopic dermatitis. However, it has not been clarified that TSLP would be regulated by intracellular calcium in mast cells yet. To determine it, we blocked intracellular calcium by treatment with calcium chelator, 2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid acetoxymethyl ester (BAPTA-AM) in human mast cell line (HMC-1) cells. BAPTA-AM inhibited the production and mRNA expression of TSLP in phorbol myristate acetate plus A23187- stimulated HMC-1 cells. BAPTA-AM also inhibited the nuclear factor-κB activation, IκBα phosphorylation, receptor interacting protein2 (RIP2) expression, and caspase-1 activation in HMC-1 cells. These results provide evidence that calcium regulates the level of TSLP through RIP2/caspase-1/NF-κB/IκBα signal. 相似文献
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Thymic stromal lymphopoietin (TSLP) plays a pivotal role in allergic diseases such as atopic dermatitis, asthma, and chronic obstructive pulmonary disease. Although there are many reports regarding function and regulatory mechanism of TSLP in dendritic cells and/or T cells, the regulatory mechanism of TSLP in mast cells has not been fully elucidated. Here, we describe how TSLP is expressed and produced by inflammatory stimulus in mast cells. TSLP mRNA was expressed by phorbol myristate acetate (PMA) plus A23187 stimulation in HMC-1 cells and reached its peak 5h after PMA plus A23187 stimulation. The expression of TSLP mRNA was inhibited by nuclear factor (NF)-κB inhibitor. In addition, NF-κB luciferase activity was inhibited by caspase-1 inhibitor, indicating that caspase-1 is an upstream of NF-κB in mast cells. Furthermore, caspase-1 inhibitor decreased the expression of TSLP mRNA induced by PMA plus A23187. Finally, TSLP production was inhibited by both caspase-1 inhibitor and NF-κB inhibitor. These results provide proof of principle that TSLP can be expressed and produced through caspase-1 and NF-κB in mast cells and open new perspectives to pharmacologically manipulate the expression and production of TSLP by molecules acting on the caspase-1 and NF-κB pathway. 相似文献
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《Phytomedicine》2014,21(4):453-460
PurposeNaju Jjok (NJJ, Polygonum tinctorium) is a clear heat and release toxin medicinal. It has been used to treat various inflammatory diseases and as a dye in clothing in traditional Korean medicine. However, the effect of NJJ on atopic dermatitis (AD) has not been elucidated. Therefore, we examined whether NJJ would have an inhibitory effect on AD using the mimic AD murine model and in vitro model.MethodsWe treated NJJ on 2,4-dinitrofluorobenzene (DNFB)-induced AD-like skin lesions in NC/Nga mice, phorbol myristate acetate/calcium ionophore A23187-stimulated human mast cell line (HMC-1) cells, and anti-CD3/anti-CD28-stimulated splenocytes. Histological analysis, ELISA, PCR, and Western blot analysis were performed.ResultsThe oral administration with NJJ suppressed the total clinical severity in DNFB-induced AD-like lesional skin. NJJ significantly suppressed the levels of inflammatory mRNA and protein in AD-like lesional skin. NJJ significantly suppressed the levels of IgE and interleukin-4 in the serum of DNFB-induced AD mice. The expression of mast cells-derived caspase-1 was suppressed by NJJ in AD-like lesional skin. In addition, topical application with NJJ improved clinical symptoms in DNFB-induced AD mice. The topical application with NJJ significantly suppressed the levels of IgE and histamine in the serum of DNFB-induced AD mice. NJJ suppressed the production and mRNA expression of TSLP by blockade of caspase-1 signal pathway in the activated HMC-1 cells. Furthermore, NJJ significantly decreased the production of tumor necrosis factor-α from the stimulated splenocytes.ConclusionsIn conclusion, these results propose curative potential of natural dye, NJJ by showing the scientific evidence on anti-AD effect of NJJ which has been used traditionally. 相似文献
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Isothiocyanates (ITCs) play a major role in the potential chemopreventive effect. Cruciferous vegetables are a particularly abundant source of ITCs. Methallyl ITC (MAITC) belongs to ITCs as a synthesized compound. However, the effects of MATIC have never been elucidated. The aim of this work was to investigate the anti-inflammatory effects and mechanisms of methallyl isothiocyanate (MAITC) in mast cells. MAITC suppressed the intracellular calcium levels in phorbol myristate acetate (PMA) plus calcium ionophore A23187 (PMACI)-stimulated human mast cell line (HMC-1) cells. MAITC significantly inhibited the production and mRNA expression of interleukin (IL)-1β in PMACI-stimulated HMC-1 cells. The activities of caspase-1 and receptor interacting protein-2 were significantly inhibited by the treatment with MAITC in PMACI-stimulated HMC-1 cells. The activation of nuclear factor-κB and phosphorylation of extracellular signal-regulated kinase and IκBα were inhibited by the treatment with MAITC. In addition, MAITC significantly inhibited the production and mRNA expression of IL-6 and tumor necrosis factor-α in PMACI-stimulated HMC-1 cells. Furthermore, MAITC significantly inhibited caspase-1 enzymatic activity and reactive oxygen species generation in PMA-stimulated HMC-1 cells. Taken together, we can conclude that MAITC showed an anti-inflammatory effect on mast cell-mediated inflammatory reaction. 相似文献
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Bogiatzi SI Fernandez I Bichet JC Marloie-Provost MA Volpe E Sastre X Soumelis V 《Journal of immunology (Baltimore, Md. : 1950)》2007,178(6):3373-3377
Thymic stromal lymphopoietin (TSLP) is an epithelial cell-derived cytokine that strongly activates dendritic cells (DC) and can initiate allergic inflammation. The factors inducing the production of human TSLP are not known. In this study, we show that proinflammatory (TNF-alpha or IL-1alpha) and Th2 (IL-4 or IL-13) cytokines synergized to induce the production of TSLP in human skin explants. TSLP production in situ was restricted to epidermal keratinocytes of the suprabasal layer. TSLP production could not be inhibited by factors regulating Th2 inflammation, such as IL-10, TGF-beta, or IFN-gamma. Cytokine-treated skin culture supernatants induced the maturation of blood CD11c(+) DC in a TSLP-dependent manner. Our data provide the first evidence of TSLP induction and subsequent DC activation in human skin. Blocking TSLP-inducing cytokines could represent a novel strategy for the treatment of allergic diseases. 相似文献
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Hyun-Ja Jeong Sun-Young Nam Hyun-A Oh Na-Ra Han Young-Sick Kim Phil-Dong Moon Seung-Youp Shin Min-Ho Kim Hyung-Min Kim 《Arthritis research & therapy》2012,14(6):R259
Introduction
Interleukin (IL)-32 is an inflammatory cytokine induced by Mycobacterium tuberculosis and Mycobacterium bovis in a variety of cell types and discovered in the synovial of patients with rheumatoid arthritis (RA). Thymic stromal lymphopoietin (TSLP) play several roles in the pathogenesis of RA. However, the role of IL-32 and TSLP in RA has not been elucidated.Methods
We evaluated the specific mechanism of between IL-32 and TSLP in RA using human monocyte cell line, THP-1 cells.Results
Here we documented for the first time that IL-32 highly increased TSLP production in THP-1 cells and human blood monocytes. TSLP expression was induced by IL-32 via activation of caspase-1 and nuclear factor-κB. TSLP produced by IL-32 increased differentiation of monocytes but depletion of TSLP prevented differentiation of monocytes into macrophage-like cells. Chondroprotective drugs such as chondroitin sulfate (CS) and the traditional Korean medicine, BaekJeol-Tang (BT) decrease production of TSLP and activation of caspase-1 and nuclear factor-κB. In addition, CS and BT inhibited IL-32-induced monocytes differentiation.Conclusions
Taken together, IL-32 and TSLP are important cytokines involved in the development of RA. The effects of CS and BT were associated with the downregulation of TSLP and caspase-1 through negative regulation of IL-32 pathways in RA. 相似文献8.
Thymic stromal lymphopoietin (TSLP), a master switch of allergic inflammation, plays an important role in the pathogenesis of allergic diseases. Although many compounds upregulate TSLP expression in vivo or in vitro, most of them are pollutants or toxicants. In the previous study, for the first time, we found that a steroid alkaloid derivative 02F04, which has a unique skeletal structure compared with other TSLP-inducing chemicals, significantly induced TSLP production in mouse keratinocytes. However, it is not investigated thoroughly that how 02F04 produces TSLP and why. In this study, we did a detailed investigation on the inducible effect and underlying molecular mechanism of 02F04 on TSLP production. We found that the peak time of TSLP mRNA level induced by 02F04 at 48 h led to a slow and continuous TSLP production in PAM212 cells. Besides, 02F04-induced TSLP production was significantly suppressed by inhibitors of Rho-associated protein kinase (ROCK), guanine nucleotide-binding protein subunit alpha q/11 (Gq/11) and extracellular signal-regulated kinase 1/2 (ERK1/2) at not only protein but also mRNA levels, and by siRNA-mediated knockdown of Gq or G11. This suggested that ROCK, Gq/11 and ERK1/2 signaling pathways were involved in 02F04-induced TSLP production. Increase in the level of p-ERK1/2 induced by 02F04 was suppressed by both inhibitors of ROCK and Gq/11, indicating that ROCK and Gq/11 molecules were located at the upstream of ERK1/2 to regulate 02F04-induced TSLP production. Gq/11 was located at the upstream of ROCK because the specific Gq/11 inhibitor of YM-254890 significantly reduced 02F04-induced actin stress fiber formation. Taken together, 02F04 upregulates a slow and continuous TSLP production through a novel Gq/11-ROCK-ERK1/2 signaling pathway. The thorough understanding the effect and mechanism of 02F04 on TSLP production is expected to supply it as a novel TSLP-regulating compound and a potential new tool for investigating the role of TSLP in allergic disorders. 相似文献
9.
Purpose: The pathological process of atopic dermatitis (AD) progressing into other types of allergic diseases such as asthma and allergic rhinitis during the first several years of life is often referred to as the atopic march. Although the phenomenon of atopic march has been recognized for decades, how asthma stems from AD is still not fully understood, confounding a universal strategy to effectively protect people from the atopic march. Methods: We established experimental atopic march mice by first inducing allergic dermatitis with 0.5% fluorescein isothiocyante (FITC) applied to the skin, followed by an ovalbumin (OVA) airway challenge. In addition, by examining serum immunoglobulin (Ig) concentrations, airway cytokines, the levels of oxidative stress markers, histopathological changes in lung tissue and airway hyperresponsiveness (AHR), we were able to validate the successful establishment of the model. Furthermore, by detecting the attenuating effects of melatonin (MT) and the levels of oxidative stress in the atopic march mice, we explored the potential molecular mechanisms involved in the development of atopic march. Results: By successfully establishing an experimental atopic march mouse model, we were able to demonstrate that overproduction of oxidative stress in the lung significantly up-regulated the activation of nuclear factor-κB (NF-κB) signaling pathways causing thymic stromal lymphopoietin (TSLP) release, which further promotes the development of atopic march. Conclusions: To mitigate the development of the atopic march, antioxidants such as MT may be imperative to inhibit NF-κB activation in the lung, especially after the onset of AD. 相似文献
10.
Kim EK Kim EY Moon PD Um JY Kim HM Lee HS Sohn Y Park SK Jung HS Sohn NW 《Bioscience, biotechnology, and biochemistry》2007,71(12):2886-2892
Lithospermi radix (LR, Borraginaceae, the root of Lithospermum erythrorhizon Siebold. et Zuccarinii) is used in herbal medicine to treat such conditions as eczema, skin burns and frostbite. This study investigates the effects of LR on the anti-allergy mechanism. LR inhibited the release of histamine from rat peritoneal mast cells by compound 48/80 in a dose-dependent manner. LR orally administered at 6.59 mg/100 g also inhibited the anti-DNP IgE-induced passive cutaneous anaphylaxis reaction. LR inhibited the PMA plus A23187-induced increase in IL-6, IL-8, and TNF-alpha expression in HMC-1 cells. In addition, LR also inhibited nuclear factor-kappa B (NF-kappaB) activation and I kappaB-alpha degradation. These results show that LR had an inhibitory effect on the atopic allergic reaction. Furthermore, the in vivo and in vitro anti-allergic effect of LR suggests possible therapeutic applications of this agent for inflammatory allergic diseases. 相似文献
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Interleukin (IL)-32, a novel cytokine, participates in a variety of inflammatory disorders. Thymic stromal lymphopoietin (TSLP) plays important roles in mucosal epithelial cells, especially in allergy-induced inflammation, through the TSLP-TSLPR (thymic stromal lymphopoietin receptor) signalling pathway. However, the association of IL-32 with TSLP on the ocular surface remains unclear. The present work aimed to assess the functional association of IL-32 with TSLP in the control of pro-inflammatory cytokine levels in the corneal epithelium. Human corneal tissue specimens and human corneal epithelial cells (HCECs) were administered different concentrations of IL-32 in the presence or absence of various inhibitors to assess TSLP levels and localization, as well as the molecular pathways that control pro-inflammatory cytokine production. TSLP mRNA levels were determined by real time RT- PCR, while protein levels were quantitated by ELISA and immunohistochemical staining. TSLP protein expression was examined in donor corneal epithelium samples. IL-32 significantly upregulated TSLP and pro-inflammatory cytokines (TNFα and IL-6) in HCECs at the gene and protein levels. The production of pro-inflammatory molecules by IL-32 was increased by recombinant TSLP. Interestingly, both NF-κB (quinazoline) and caspase-1 (VX-765) inhibitors suppressed the IL-32-related upregulation of pro-inflammatory cytokines (TNFα and IL-6). These findings demonstrate that IL-32 and IL-32-induced-TSLP are critical cytokines that participate in inflammatory responses through the caspase-1 and NF-κB signalling pathways in the corneal epithelium, suggesting new molecular targets for inflammatory diseases of the ocular surface. The effects of IL-32 on cell proliferation and apoptosis were investigated by MTT assays and RT-PCR,respectively. The results demonstrated that IL-32 inhibits cells apoptosis in HCECs. 相似文献
13.
Yamada T Saito H Kimura Y Kubo S Sakashita M Susuki D Ito Y Ogi K Imoto Y Fujieda S 《Cytokine》2012,57(2):245-250
Thymic stromal lymphopoietin (TSLP) exerts a marked influence on the polarization of dendritic cells to drive T helper (Th) 2 cytokine production, and has been linked to allergic airway diseases. Although TSLP is produced by airway epithelium, TSLP production in laryngeal arytenoid fibroblasts remains largely unexplored. We examined the effect of Toll-like receptor (TLR) ligands and the cross-talk that occurs among different TLR ligands on TSLP production in arytenoid fibroblasts. Since mRNA of TLR 2, 3, 4, and 9 has been found to be expressed in arytenoid fibroblasts, we examined the effect on its production of TLR ligands. TSLP production by arytenoid fibroblasts was strongly induced in the presence of polyinosinic-polycytidylic acid (poly(I:C)), a ligand of TLR3. Its production was synergistically induced in the presence of IL-4, to a level more than 100 times higher than that observed in the absence of poly(I:C) or IL-4. We also revealed that B type DNA containing CpG motifs (CpG-DNA) coding for a TLR9 ligand markedly suppressed both poly(I:C)-induced and poly(I:C)-plus-IL-4-induced TSLP production. B type CpG-DNA decreased the poly(I:C)-induced phosphorylation of c-Jun N-terminal kinase (JNK), and pre-incubation with SP600125 (inhibitor of JNK) reduced the poly(I:C)-induced TSLP-production. These results indicate that human arytenoid fibroblasts strongly induce TSLP production with stimulation by double-stranded RNA (dsRNA), which can be inhibited by CpG-DNA and participate in immune allergic responses. 相似文献
14.
Andreas Borowski Tina Vetter Michael Kuepper Andreas Wohlmann Sebastian Krause Thomas Lorenzen Johann Christian Virchow Werner Luttmann Karlheinz Friedrich 《Cytokine》2013,61(2):546-555
Thymic stromal lymphopoietin (TSLP) is an interleukin-7 (IL-7)-like cytokine with a pivotal role in development and maintenance of atopic diseases such as allergic asthma and atopic dermatitis. Moreover, recent studies show an involvement of TSLP in the progression of various cancers. TSLP signaling is mediated by the TSLP receptor (TSLPR), a heterodimeric type I cytokine receptor. It consists of the IL-7 receptor alpha chain (IL-7Rα), which is shared with the IL-7 receptor, and the TSLPRα chain as a specific subunit. Blocking signal release by TSLP without affecting IL-7 function is a potentially interesting option for the treatment of atopic diseases or certain tumors. By employing the extracellular domain of human TSLPRα chain (hTSLPRαex) as an antigen, we generated a set of monoclonal antibodies. Several binders to native and/or denatured receptor protein were identified and characterized by cytometry and Western blot analysis. A screen based on a STAT3-driven reporter gene assay in murine pro-B cells expressing a functional hTSLPR yielded two hybridoma clones with specific antagonistic properties towards hTSLP, but not IL-7. Kinetic studies measuring blockade of hTSLP-dependent STAT phosphorylation in a TSLP-responsive cell line revealed an inhibitory constant in the nanomolar range. 相似文献
15.
Lee S Park HH Son HY Ha JH Lee MG Oh TY Sohn DH Jeong TC Lee SH Son JK Lee SG Jun CD Kim SH 《Cell biology and toxicology》2007,23(2):105-112
Mast cell-mediated allergic inflammation is involved in many diseases such as asthma, sinusitis, and rheumatoid arthritis.
Mast cells induce synthesis and production of pro-inflammatory cytokines including tumor necrosis factor (TNF)-α, interleukin
(IL)-1β and IL-6 with immune regulatory properties. The formulated ethanol extract of Artemisia asiatica Nakai (DA-9601) has been reported to have antioxidative and anti-inflammatory activities. In this report, we investigated
the effect of DA-9601 on the expression of pro-inflammatory cytokines by the activated human mast cell line HMC-1 and studied
its possible mechanisms of action. DA-9601 dose-dependently decreased the gene expression and production of TNF-α, IL-1β,
and IL-6 on phorbol 12-myristate 13-acetate (PMA)- and calcium ionophore A23187-stimulated HMC-1 cells. In addition, DA-9601
attenuated PMA- and A23187-induced activation of NF-κB as indicated by inhibition of degradation of IκBα, nuclear translocation
of NF-κB, NF-κB/DNA binding, and NF-κB-dependent gene reporter assay. Our in vitro studies provide evidence that DA-9601 might contribute to the treatment of mast cell-derived allergic inflammatory diseases. 相似文献
16.
《Bioscience, biotechnology, and biochemistry》2013,77(12):2886-2892
Lithospermi radix (LR, Borraginaceae, the root of Lithospermum erythrorhizon Siebold. et Zuccarinii) is used in herbal medicine to treat such conditions as eczema, skin burns and frostbite. This study investigates the effects of LR on the anti-allergy mechanism. LR inhibited the release of histamine from rat peritoneal mast cells by compound 48/80 in a dose-dependent manner. LR orally administered at 6.59 mg/100 g also inhibited the anti-DNP IgE-induced passive cutaneous anaphylaxis reaction. LR inhibited the PMA plus A23187-induced increase in IL-6, IL-8, and TNF-α expression in HMC-1 cells. In addition, LR also inhibited nuclear factor-kappa B (NF-κB) activation and IκB-α degradation. These results show that LR had an inhibitory effect on the atopic allergic reaction. Furthermore, the in vivo and in vitro anti-allergic effect of LR suggests possible therapeutic applications of this agent for inflammatory allergic diseases. 相似文献
17.
Torii Y Ito T Amakawa R Sugimoto H Amuro H Tanijiri T Katashiba Y Ogata M Yokoi T Fukuhara S 《Journal of immunology (Baltimore, Md. : 1950)》2008,181(8):5340-5349
Atopic dermatitis is a major allergic disease that develops through dysregulation of Th2-mediated inflammation. Although dendritic cells (DCs) have been thought to play a critical role in the upstream phase of the allergic cascade, conventional drugs such as steroids and chemical mediator antagonists target the effector cells or factors in allergic inflammation. Recently, it has been demonstrated that interaction between thymic stromal lymphopoietin (TSLP) and human DCs plays an essential role in evoking inflammatory Th2 responses in allergy through OX40 ligand expression on DCs. In this study, we provide evidence that R848, an imidazoquinoline compound, which is a TLR ligand and a strong Th1 response-inducing reagent, is a potent adjuvant for the alteration of the Th2-inducing potency of human DCs activated by TSLP (TSLP-DCs). R848 inhibited the inflammatory Th2-inducing capacity of TSLP-DCs and redirected them to possessing an IL-10 and IFN-gamma-producing regulatory Th1-inducing capacity. This functional alteration depended on both repression of OX40 ligand expression and induction of IL-12 production from DCs by the addition of R848. Additionally, R848 had the ability to inhibit the TSLP-mediated expansion and maintenance of the Th2 memory response. These findings suggest that imidazoquinoline may be a useful in the treatment of allergic diseases that are triggered by TSLP. 相似文献
18.
Zhong J Kim MS Chaerkady R Wu X Huang TC Getnet D Mitchell CJ Palapetta SM Sharma J O'Meally RN Cole RN Yoda A Moritz A Loriaux MM Rush J Weinstock DM Tyner JW Pandey A 《Molecular & cellular proteomics : MCP》2012,11(6):M112.017764
Thymic stromal lymphopoietin (TSLP) is a cytokine that plays diverse roles in the regulation of immune responses. TSLP requires a heterodimeric receptor complex consisting of IL-7 receptor α subunit and its unique TSLP receptor (gene symbol CRLF2) to transmit signals in cells. Abnormal TSLP signaling (e.g. overexpression of TSLP or its unique receptor TSLPR) contributes to the development of a number of diseases including asthma and leukemia. However, a detailed understanding of the signaling pathways activated by TSLP remains elusive. In this study, we performed a global quantitative phosphoproteomic analysis of the TSLP signaling network using stable isotope labeling by amino acids in cell culture. By employing titanium dioxide in addition to antiphosphotyrosine antibodies as enrichment methods, we identified 4164 phosphopeptides on 1670 phosphoproteins. Using stable isotope labeling by amino acids in cell culture-based quantitation, we determined that the phosphorylation status of 226 proteins was modulated by TSLP stimulation. Our analysis identified activation of several members of the Src and Tec families of kinases including Btk, Lyn, and Tec by TSLP for the first time. In addition, we report TSLP-induced phosphorylation of protein phosphatases such as Ptpn6 (SHP-1) and Ptpn11 (Shp2), which has also not been reported previously. Co-immunoprecipitation assays showed that Shp2 binds to the adapter protein Gab2 in a TSLP-dependent manner. This is the first demonstration of an inducible protein complex in TSLP signaling. A kinase inhibitor screen revealed that pharmacological inhibition of PI-3 kinase, Jak family kinases, Src family kinases or Btk suppressed TSLP-dependent cellular proliferation making them candidate therapeutic targets in diseases resulting from aberrant TSLP signaling. Our study is the first phosphoproteomic analysis of the TSLP signaling pathway that greatly expands our understanding of TSLP signaling and provides novel therapeutic targets for TSLP/TSLPR-associated diseases in humans. 相似文献
19.
Ryuta Kamekura Takashi Kojima Jun-ichi Koizumi Noriko Ogasawara Makoto Kurose Mitsuru Go Atsushi Harimaya Masaki Murata Satoshi Tanaka Hideki Chiba Tetsuo Himi Norimasa Sawada 《Cell and tissue research》2009,338(2):283-293
Epithelial-derived thymic stromal lymphopoietin (TSLP) triggers dendritic cell (DC)-mediated Th2-type inflammatory responses and is a master switch for allergic inflammatory diseases. In the present study, the expression and induction of TSLP and the effects of TSLP on the tight-junctional barrier of human nasal epithelial cells (HNECs) have been investigated in order to elucidate the role of TSLP in allergic rhinitis. We have found high expression of TSLP in the epithelium from patients with allergic rhinitis with recruitment and infiltration of DCs. In vitro, TSLP is significantly produced in HNECs after treatment with a toll-like receptor 2 (TLR2) ligand, Pam3Cys-Ser-(Lys)4, and a mixture of interleukin-1β and tumor necrosis factor-α. Treatment with TSLP rapidly enhances the barrier function of cultured HNECs, together with an increase of tight-junction proteins claudin-1, -4, -7, and occludin. The nasal-epithelial-derived TSLP thus not only activates DCs but also preserves the epithelial barrier via the upregulation of tight-junction proteins, thereby regulating antigen sensitization during the early stage of allergic rhinitis. 相似文献
20.
Hana Saleh Scott Embry Andromeda Nauli Seif Atyia Guha Krishnaswamy 《Clinical and molecular allergy : CMA》2012,10(1):1-11