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      • SCOPUSKCI등재

        담배 니코틴에 의한 사람 태아 성상세포에서 종양괴사인자(TNF-α)의 발현 억제작용

        손일홍,이성익,양현덕,한선정,석승한,이재규,김재현,박주영,문형인,이성수,Son, Il-Hong,Lee, Sung-Ik,Yang, Hyun-Duk,Han, Sun-Jung,Suk, Seung-Han,Lee, Jai-Kyoo,Kim, Jae-Hyun,Park, Joo-Young,Moon, Hyung-In,Lee, Sung-Soo 대한화학회 2007 대한화학회지 Vol.51 No.3

        니코틴은 사람 대식세포에서 interleukin 2 (IL-2)와 종양괴사인자 (tumor necrosis factor-alpha; TNF-α) 가 생성되는 것을 억제하는데, 이러한 억제작용은 cytokine 유전자 발현 중 전사단계에서 전사인자의 활성을 억제함으로써 일어난다. 이러한 니코틴의 면역반응 억제작용은 아프타성궤양 및 궤양성대장염, 알레르기성폐 포염, 건초열 등에서도 보고되고 있다. 만일 중추신경계에서도 위와 같은 니코틴의 면역억제 작용이 일어난 다면 다발성경화증과 같은 면역반응 매개질환의 치료에 새로운 전기가 마련될 수 있을 것이다. 본 연구에서 는 중추신경계의 여러 면역반응 매개질환의 병태생리에 대한 이해를 넓히고자, 이미 알려진 니코틴의 cytokine 생성억제가 사람 중추신경계의 성상세포에서도 일어남을 확인하고 그 억제기전을 밝히고자 하였다. 이를 위 하여 사람 태아 성상세포에 다양한 농도의 니코틴과 IL-1β를 처리한 다음 TNF-α mRNA의 발현 정도와 NF- κB의 활성을 비교, 분석하여 다음과 같은 결과를 얻었다. 1. 사람 태아 성상세포를 0.1-20 μg/ml의 니코틴으로 처리해 본 결과 10 μg/ml 이상의 농도에서 세포독성능이 나타나기 시작하였다. 2. 사람 태아 성상세포에 IL- 1β를 처리하면 2시간만에 TNF-α mRNA가 최대로 발현되었으며 그 이후로는 점진적으로 감소하였다. 3. 사 람 태아 성상세포를 1 및 0.1 μg/ml의 니코틴으로 전처리한 후 IL-1β로 자극한 군에서는 IL-1β 단독 처리군에 비해 TNF-α mRNA의 발현이 감소하는 양상을 보였다. 1 μg/ml의 니코틴을 처리한 경우에는 8시간 이후부터 TNF-α mRNA의 발현이 현저하게 감소하여 12시간에 최대로 감소하였다. 또한 0.1 μg/ml의 니코틴을 처리한 군에서는 24시간에 가장 현저하게 감소하였다. 4. 성상세포에 IL-1β로 처리한 군에서는 강력한 NF-κB의 활성 을 확인할 수 있었으며, 니코틴을 전처리하고 IL-1β 자극한 군에서는 NF-B의 활성이 감소하였다. 결론적으로 일정농도 이상의 니코틴은 세포독성효과를 나타내나 적정한 농도와 시간 경과후 니코틴은 사람 태아 성상세포에서 IL-1β에 의해 유도되는 TNF-α의 발현 감소를 유도하며, 이는 NF-κB의 활성을 감소시킴으로써 나타난다고 생각된다. The Tumor necrosis factor-α, (TNF-α), is involved in the pathogenesis of multiple sclerosis and contributes to the degeneration of oligodendrocytes as well as neurons. Nicotine has been found to have immunosuppressive and inflammation-suppressing effects. Astrocytes, the major glial cells in the CNS, are capable of producing TNF-α at both the mRNA and protein levels in response to interleukin-1 (IL-1) or TNF-α. Nicotine has been shown to influence glial cell functions. To order to explore the role of astrocytes in the production of TNF-α, astrocytes were pretreated with nicotine and are stimulated with IL-1β to determine their effects on TNF-α production. The results are as follows. Cytotoxic effects of nicotine on human fetal astrocytes were noted above 10 μg/ml of nicotine. The effect of IL-1β on TNF-α mRNA expression in primary cultured human fetal astrocytes was maximal at 2 h after IL- 1β(100 pg/ml) treatment. Human fetal astrocytes were pretreated with 0.1, 1, and 10 μg/ml of nicotine and then stimulated with IL-1β (100 pg/ml) for 2 h. The inhibitory effect of nicotine on expressions of TNF-α mRNA in human fetal astrocytes with pretreated 0.1 μg/ml of nicotine is first noted at 8 hr, and the inhibitory effect is maximal at 12 h. The inhibitory effect at 1 μg/ml of nicotine is inhibited maximal at 24 h. Nicotine at 0.1, 1 and 10 μg/ml concentrations significantly inhibits IL-1β-induced NF-κB activation. Collectively, this study indicates that nicotine might inhibit the expression of TNF-α in activated human fetal astrocytes.

      • KCI등재

        Sequential evolution of IL-17 responses in the early period of allograft rejection

        Sang Il Min,하종원,박정규,Jae Kyung Won,Yang Jin Park,민승기,김상준 생화학분자생물학회 2009 Experimental and molecular medicine Vol.41 No.10

        In addition to CD4+CD25+Foxp3+ regulatory T (Treg) cells which protect against autoimmune tissue injury, IL-17-producing CD4+ T (Th17) cells have been recently described and shown to play a crucial role in autoimmune injury. It appears that there is a reciprocal developmental pathway between Th17 and Treg cells. Although IL-17 is known to be associated with allograft rejection, the cellular source of IL-17 and the nature of Th17 in the context of allograft rejection remain unknown. In the current study, the dynamics of Treg and IL-17-producing cells after syngeneic and allogeneic transplantation were examined using a wild-type murine cardiac transplantation model. Ly6G+ cells were found to produce IL-17 during the early postoperative period and CD8+ as well as CD4+ T cells were also found to produce IL-17 during alloimmune response. Graft-infiltrating Ly6G+, CD4+, and even CD8+ cells were found to express IL-17 highly compared to those in spleen. Although the frequencies of Th17 and Treg were found to gradually increase in both syngeneic and allogeneic recipients, Th17/Treg ratios were significantly higher in recipients with allograft rejection than in syngeneic recipients. In conclusion, IL-17 is produced by neutrophils during the early postoperative period and subsequently by Th17 and CD8+ T cells during allograft rejection. Th17/Treg imbalance is associated with the development of allograft rejection. This study would provide basic information on Th17 biology for future investigation in the field of transplantation.

      • KCI등재SCOPUS

        IL-15에 의한 류마티스관절염 환자 활막 섬유모세포에서의 SDF-1 유도

        박영은 ( Young Eun Park ),김성일 ( Sung Il Kim ),박성후 ( Seong Hu Park ),백승훈 ( Seung Hoon Baek ),오혜좌 ( Hye Jwa Oh ),허양미 ( Yang Mi Heo ),조미라 ( Mi La Cho ) 대한류마티스학회 2010 대한류마티스학회지 Vol.17 No.3

        Objective: Interleukin-15 (IL-15) recruits and activates synovial T cells, and IL-15 plays an important role in amplifying and perpetuating inflammation in the pathogenesis of rheumatoid arthritis (RA). Stromal cell-derived factor-1 (SDF-1) is a potent chemoattractant for memory T cells in the inflamed RA synovium. This study investigated the effect of IL-15 on SDF-1 production in RA fibroblast-like synoviocytes (FLS). Methods: The expressions of IL-15 and SDF-1 were determined from the synovium of patients with RA and osteoarthritis (OA) by performing immunohistochemistry. The expressions of SDF-1 was measured from the RA FLS that were cultured with IL-15 and IL-17 by real-time RT-PCR and ELISA. The SDF-1 expression was also measured, via ELISA, from the RA FLS stimulated by IL-15 together with the inhibitors of such intracellular signal molecules as phosphatidylinositol 3-kinase (PI 3-kinase, LY294002), STAT3 (AG490), MAP Kinase (PD98059), NF-κB (parthenolide) and activator protein 1 (AP-1, curcumin). Results: IL-15 and SDF-1 were mainly expressed in the RA synovium compared to that of the OA synovium. IL-15 increased the SDF-1 expressions and it, and had an additive effect with IL-17 on the SDF-1 expressions in the cultured RA FLS. The IL-15 induced increase of the SDF-1 expression in the cultured RA FLS was blocked by the inhibitors of PI 3-kinase, NF-κB and AP-1. Conclusion: The SDF-1 expression was increased in the RA synovium and it was up-regulated by IL-15 in the RA FLS through the PI 3-kinase, NF-κB, and AP-1 pathways. These results imply that the IL-15 induced increase of the SDF-1 expressions may be involved in the immunopathogenesis of RA.

      • KCI등재

        Comparison of immune cell populations in bronchoalveolar lavage cells and PBMC cytokine expressions in porcine reproductive and respiratory syndrome and porcine respiratory disease complex

        Yang, Myeon-Sik,Jeong, Chang-Gi,Nazki, Salik,Mattoo, Sameer ul Salam,Lee, Sang-Myeong,Kim, Won-Il,Kim, Bumseok The Korean Society of Veterinary Service 2019 韓國家畜衛生學會誌 Vol.42 No.4

        Porcine reproductive and respiratory syndrome (PRRS) is characterized by reproductive failure in sows and respiratory distress in all age pigs. Porcine respiratory disease complex (PRDC) is a disease caused by opportunistic bacterial infection secondary to a weakened immune system by a preceding respiratory infection. In this study, we tried to compare the immune responses in PRRS and PRDC groups to clearly characterize the disease severity. Eighty-five pigs were infected with various Korean field PRRS virus strains. Infected animals were classified into PRRS (n=32) and PRDC (n=53) groups based on lung lesions such as interstitial pneumonia, suppurative pneumonia, and pleuropneumonia. The immune cell population of bronchoalveolar lavage cells (BALc) was evaluated on 14 and 28 days post infection (dpi) and PMBC cytokine expression was measured on 0, 3, 7, 14 dpi to investigate early inflammatory reactions. Pulmonary lesion severity was negatively correlated with alveolar macrophage (AM) in both PRRS and PRDC groups on 14 and 28 dpi. AM in BALc was less populated in PRDC group on 28 dpi compared to PRRS group. AM in BALc was significantly less populated in PRDC group on 28 dpi compared to 14 dpi. In addition, cytotoxic T lymphocyte (CTL) in BALc was higher populated in PRDC group on 14 dpi and 28 dpi compared to PRRS group. In the case of PBMC cytokine TNF-α, IFN-α, IL-1β, IFN-γ, FoxP3, and IL-2, the PRRS group showed higher expression than the PRDC group on 7 dpi, 14 dpi, 7 dpi, 14 dpi, 14 dpi, and 14 dpi, respectively. On the other hand, in the case of IFN-β, IL-6, IL-8, IL-4, and IL-17, the PRDC group showed higher PBMC cytokine expression at 14 dpi, 7 dpi, 14 dpi, 3 dpi, and 3 dpi, respectively, than the PRRS group. Based on these results, our study could characterize differential immune responses in pigs with PRRS or PRDC.

      • SCIESCOPUSKCI등재

        The Effects of Ketorolac Tromethamine and Baicalein on the Levels of Inflammatory Factors in Human Synoviocytes

        Yang, Jae-Heon,Yun, Mi-Young,Lee, Nam-Hee,Kim, Dae-Keun,Kim, Young-Il,Noh, Young-Hee,Kim, Tae-Youl,Yoon, Se-Won,Shin, Sang-Chul 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.11

        This study examined the effects of ketorolac tromethamine (KT) and baicalein (BE) on the levels of inflammatory factors in human synoviocytes. The fibroblast-like synoviocytes (FLS) cells were used to determine the possible regulatory effects of KT and BE (KTBE) on the levels of inflammatory factors in FLS cells. In addition, the levels of TNF-$\alpha$, IL-6, and IL-$1{\beta}$ mRNA expression in FLS cells induced by a TNF-$\alpha$ and IL-$1{\beta}$ co-treatment were largely inhibited by a KTBE treatment. The level of FLS cells proliferation was increased by IL-$1{\beta}$ and TNF-$\alpha$, and strongly inhibited by KTBE treatment. The production of oxygen species (ROS) was inhibited by KTBE in FLS cells. KTBE appears to regulate the levels of mRNA that are important for regulating RA progression.

      • Chronic alcohol consumption induces migration of IL-1R2+ monocytes from the bone marrow into the liver by neuro-immunologic pathway

        Young-Ri Shim,Hee-Hoon Kim,Keungmo Yang,Tom Ryu,Kyurae Kim,Sung Eun Choi,Minjeong Kim,Chae-Rin Woo,Young-Sun Lee,Won-Il Jeong 한국실험동물학회 2021 한국실험동물학회 학술발표대회 논문집 Vol.2021 No.7

        Liver is challenged by diverse detrimental substances through multiple metabolic processes, but it is less prone to inflammation. In chronic alcohol consumption, although the migration of monocytes from bone marrow (BM) into liver is increased, alcoholic hepatitis rarely occurs. Thus, we investigated the sub-population of liver macrophages showing anti-inflammatory roles through single-cell RNA sequencing (scRNA-Seq) after chronic EtOH-feeding. Interestingly, in scRNA-seq and flow cytometry analyses of hepatic macrophages, the phenotype of Ly6Clow (anti-inflammatory) cells was dramatically altered by ethanol intake. In particular, they were highly expressed interleukin-1 type II receptor (IL-1R2), a decoy receptor of IL-1β. Intriguingly, IL-1R2+ Ly6Clow macrophages showed decreased CX3CR1 expression, which was confirmed not only in the liver, but also BM and blood, suggesting monocytes from BM affected by ethanol might migrate into the liver. We found that the Leptin Receptor+ mesenchymal stromal cells (LepR+ MSCs), which were located around blood vessels expressing CX3CL1 to hold CX3CR1+ macrophages, could express alcohol dehydrogenase to metabolize ethanol in BM. Ethanol metabolism in LepR+ MSCs was induced both production of chemokines (CXCL9 and 10) and the excretion of glutamate via cystine-glutamate anti-porter xCT to recruit and activate the CXCR3+ BM NK cells to produce interferon-γ in a metabotropic glutamate receptor 5 (mGluR5)-dependent manner. Indeed, IFN-γ production was significantly decreased in EtOH-fed mice when we depleted mGluR5 in NK cells. In turn, NK cell-derived IFN-γ down-regulated CX3CR1 expression in BM Ly6Clow monocytes, consequently induced egress of Ly6Clow monocytes into the blood and migration into the liver to suppress alcoholic inflammation. In conclusion, glutamate of LepR+ MSCs imposed egress license on anti-inflammatory IL-1R2+ Ly6Clow monocytes through NK cell-derived IFN-γ-mediated suppression of CX3CR1, suggesting a potential therapeutic inter-organ crosstalk between BM and liver in alcoholic liver disease.

      • SCISCIESCOPUS

        Caffeic acid phenethyl ester inhibits the inflammatory effects of interleukin-1β in human corneal fibroblasts

        Yang, Jae-Wook,Jung, Won-Kyo,Lee, Chang-Min,Yea, Sung Su,Choi, Yung Hyun,Kim, Gi-Young,Lee, Dae-Sung,Na, Giyoun,Park, Sae-Gwang,Seo, Su-Kil,Choi, Jung Sik,Lee, Young-Min,Park, Won Sun,Choi, Il-Whan Informa Healthcare USA, Inc. 2014 IMMUNOPHARMACOLOGY AND IMMUNOTOXICOLOGY Vol.36 No.5

        <P><I>Context</I>: Expression of various inflammatory mediators in corneal fibroblasts contributes to corneal inflammation.</P><P><I>Objective</I>: The purpose of this study was to assess the possible effects of caffeic acid phenethyl ester (CAPE) on the expression of inflammatory mediators during an inflammatory response in human corneal fibroblasts.</P><P><I>Materials and methods</I>: The levels of interleukin (IL)-6, monocyte chemotactic protein (MCP)-1, and intercellular adhesion molecule-1 (ICAM-1) from IL-1β-exposed human corneal fibroblasts were measured with enzyme-linked immunosorbent assays (ELISA). The regulatory mechanisms of CAPE on cellular signaling pathways were examined using Western blot and electrophoretic mobility shift assays. A functional validation was carried out by evaluating the inhibitory effects of CAPE on neutrophil and monocyte migration <I>in vitro</I>.</P><P><I>Results</I>: CAPE inhibited the expression of IL-6, MCP-1 and ICAM-1 induced by the pro-inflammatory cytokine IL-1β in corneal fibroblasts. The activation of AKT and NF-κB by IL-1β was markedly inhibited by CAPE, whereas the activity of mitogen-activated protein kinases (MAPKs) was not affected. CAPE significantly suppressed the IL-1β-induced migration of differentiated (d)HL-60 and THP-1 cells.</P><P><I>Discussion</I>: These anti-inflammatory effects of CAPE may be expected to inhibit the infiltration of leukocytes into the corneal stroma <I>in vivo</I>.</P>

      • SCIEKCI등재

        Nicotine Suppresses TNF-${\alpha}$ Expression in Human Fetal Astrocyte through the Modulation of Nuclear Factor-${\kappa}B$ Activation

        Son, Il-Hong,Park, Yong-Hoon,Yang, Hyun-Duk,Lee, Sung-Ik,Han, Sun-Jung,Lee, Jai-Kyoo,Ha, Dae-Ho,Kang, Hyung-Won,Park, Joo-Young,Lee, Sung-Soo The Korean Society of Toxicogenomics and Toxicopro 2008 Molecular & cellular toxicology Vol.4 No.2

        Parkinson's disease (PD) progresses severely by a gradual loss of dopaminergic neurons in the substantia nigra (SN). Epidemiological studies showed that the incidences of PD were reduced by smoking of which the major component, nicotine might be neuroprotective. But the function of nicotine, which might suppress the incidences of PD, is still unknown. Fortunately, recently it was reported that a glial reaction and inflammatory processes might participate in a selective loss of dopaminergic neurons in the SN. The levels of tumour necrosis factor (TNF)-${\alpha}$ synthesised by astrocytes and microglia are elevated in striatum and cerebrospinal fluid (CSF) in PD. TNF-${\alpha}$ kills the cultured dopaminergic neurons through the apoptosis mechanism. TNF-${\alpha}$ release from glial cells may mediate progression of nigral degeneration in PD. Nicotine pretreatment considerably decreases microglial activation with significant reduction of TNF-${\alpha}$ mRNA expression and TNF-${\alpha}$ release induced by lipopholysaccharide (LPS) stimulation. Thus, this study was intended to explore the role of nicotine pretreatment to inhibit the expressions of TNF-${\alpha}$ mRNA in human fetal astrocytes (HFA) stimulated with IL-$1{\beta}$. The results are as follows: HFA were pretreated with 0.1, 1, and $10{\mu}g/mL$ of nicotine and then stimulated with IL-$1{\beta}$ (100 pg/mL) for 2h. The inhibitory effect of nicotine on expressions of TNF-${\alpha}$ mRNA in HFA with pretreated $0.1{\mu}g/mL$ of nicotine was first noted at 8hr, and the inhibitory effect was maximal at 12 h. The inhibitory effect at $1{\mu}g/mL$ of nicotine was inhibited maximal at 24 h. Cytotoxic effects of nicotine were noted above $10{\mu}g/mL$ of nicotine. Moreover, Nicotine at 0.1, 1 and $10{\mu}g/mL$concentrations significantly inhibited IL-$1{\beta}$-induced TF-${\kappa}B$ activation. Collectively, these results indicate that in activated HFA, nicotine may inhibit the expression of TNF-${\alpha}$ mRNA through the pathway which suppresses the NF-${\kappa}B$ activation. This study suggests that nicotine might be neuroprotective to dopaminergic neurons in the SN and reduce the incidences of PD.

      • KCI등재

        The Effect of Extract from Sea Buckthorn on DNCB-induced Atopic Dermatitis in NC/Nga Mice

        Park, Sang-Yong,Shin, Heon-Sub,Yang, Jung-Eun,Han, Sang-No,Kim, Dae-Sung,Kim, Myong-Jo,Heo, Seong-Il,Yi, Tae-Hoo,Lee, Jung-Min The Plant Resources Society of Korea 2012 한국자원식물학회지 Vol.25 No.6

        Sea Buckthorn (Hippophae rhamnoides L.) has been used in traditional medicine for the treatment of cough, indigestion, circulatory problems and pain. The associated anti-inflammatory effect of this agent is achieved via the inhibition of Nf-${\kappa}B$ signaling, a property that has been demonstrated to effectively control the symptoms of various skin disorders, including atopic dermatitis. Accordingly, the purpose of this study was to assess the efficacy of Sea Buckthorn in reducing the production of lipopolysaccharide (LPS) activated nitric oxide (NO) by inhibiting the Nf-${\kappa}B$ pathway, as measured by the symptoms of atopic dermatitis (AD) occurring secondarily to inflammation and immune dysregulation. Our data demonstrate that Sea Buckthorn significantly decreased the LPS-induced production of NO (p<0.001). Atopic dermatitis was induced by repeated application of 2,4-dinitrochlorobenzene to the dorsal skin of mice. Topical application of 5% Sea Buckthorn extract improved the symptoms of AD, specifically reducing disease severity scores, scratching behaviors and epidermal thickness. When compared to the control group, animals treated with Sea Buckthorn exhibited increased serum IL-12 levels and decreased serum TNF-${\alpha}$, IL-4 and IL-5 levels. Such a modulation of biphasic T-helper (Th)1/Th2 cytokines may result in a reduction in serum IgE levels. Our findings suggest that mechanism of action of Sea Buckthorn in the treatment of AD is associated with a marked anti-inflammatory effect as well as an inhibition of Th2-mediated IgE overproduction via the modulation of biphasic Th1/Th2 cytokines. Such results suggest that topical Sea Buckthorn extract may prove to be a novel therapy for AD symptoms with few side effects.

      • SCOPUSKCI등재

        위장관 ; Lipopolysaccharide로 유도된 HT-29 세포주의 염증에서 Lactobacillus rhamnosus GG의 항염증 작용과 기전

        이상길 ( Sang Kil Lee ),양경민 ( Kyung Min Yang ),천재희 ( Jae Hee Cheon ),김태일 ( Tae Il Kim ),김원호 ( Won Ho Kim ) 대한소화기학회 2012 대한소화기학회지 Vol.60 No.2

        Background/Aims: Probiotics are live non-pathogenic organisms that belong to the resident microflora, and confer health benefits by multiple mechanisms. Lactobacillus rhamnosus GG (LGG) is one of the probiotic bacteria that ameliorates intestinal injury and inflammation caused by various stimuli. We aimed to evaluate the anti-inflammatory effect and mechanism of LGG in lipopolysaccharide (LPS)-stimulated HT-29 cells. Methods: HT-29 cells were stimulated with interleukin (IL)-1β (2 ng/mL), tumor necrosis factor (TNF)-α (20 ng/mL), and LPS (20 μg/mL) in the presence or absence of LGG (107-109 colony forming units/mL). Production of the pro-inflammatory chemokine IL-8 was measured by ELISA and semi-quantitative PCR. Transcriptional activity of NF-κB-responsive gene was evaluated by luciferase assay with reporter gene. Toll-like receptor 4 (TLR4) mRNA expression was assessed by semi-quantitative PCR. The IκBα degradation was evaluated by western blot and intranuclear translocation of NF-κB was determined by western blot and immunofluorescence. Results: LGG did not affect the viability of HT-29 cells. Pretreatment of HT-29 cells with LGG significantly blocked TNF-α, and LPS induced IL-8 activation at both mRNA and protein level (p<0.05). Pretreatment of HT-29 cells with LGG attenuated LPS-induced NF-κB nuclear translocation and also blocked LPS-induced IκBα degradation. LGG also down-regulated TLR4 mRNA activated by LPS. Conclusions: LGG attenuates LPS induced inflammation, and this may be associated with TLR4/NF-κB down-regulation. (Korean J Gastroenterol 2012;60:86-93)

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