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Kim HE, Lee JY, Yoo DH, Park HH, Choi EJ, Nam KH, Park J, Choi JK. Imidazole propionate ameliorates atopic dermatitis-like skin lesions by inhibiting mitochondrial ROS and mTORC2. Front Immunol 2024; 15:1324026. [PMID: 38533495 PMCID: PMC10964488 DOI: 10.3389/fimmu.2024.1324026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/20/2024] [Indexed: 03/28/2024] Open
Abstract
Background Imidazole propionate (IMP) is a histidine metabolite produced by some gut microorganisms in the human colon. Increased levels of IMP are associated with intestinal inflammation and the development and progression of cardiovascular disease and diabetes. However, the anti-inflammatory activity of IMP has not been investigated. This study aimed to elucidate the role of IMP in treating atopic dermatitis (AD). Methods To understand how IMP mediates immunosuppression in AD, IMP was intraperitoneally injected into a Dermatophagoides farinae extract (DFE)/1-chloro-2,4 dinitrochlorobenzene (DNCB)-induced AD-like skin lesions mouse model. We also characterized the anti-inflammatory mechanism of IMP by inducing an AD response in keratinocytes through TNF-α/IFN-γ or IL-4 stimulation. Results Contrary to the prevailing view that IMP is an unhealthy microbial metabolite, we found that IMP-treated AD-like skin lesions mice showed significant improvement in their clinical symptoms, including ear thickness, epidermal and dermal thickness, and IgE levels. Furthermore, IMP antagonized the expansion of myeloid (neutrophils, macrophages, eosinophils, and mast cells) and Th cells (Th1, Th2, and Th17) in mouse skin and prevented mitochondrial reactive oxygen species production by inhibiting mitochondrial energy production. Interestingly, we found that IMP inhibited AD by reducing glucose uptake in cells to suppress proinflammatory cytokines and chemokines in an AD-like in vitro model, sequentially downregulating the PI3K and mTORC2 signaling pathways centered on Akt, and upregulating DDIT4 and AMPK. Discussion Our results suggest that IMP exerts anti-inflammatory effects through the metabolic reprogramming of skin inflammation, making it a promising therapeutic candidate for AD and related skin diseases.
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Affiliation(s)
- Ha Eun Kim
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Jong Yeong Lee
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
| | - Dong-Hoon Yoo
- Department of Sports Rehabilitation and Exercise Management, University of Gyeongnam Geochang, Geochang-gun, Republic of Korea
| | - Hyo-Hyun Park
- Department of Clinical Pathology, Daegu Health College, Daegu, Republic of Korea
| | - Eun-Ju Choi
- Department of Physical Education, College of Education, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Kyung-Hwa Nam
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jin Park
- Department of Dermatology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
- Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju, Republic of Korea
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Kim J, Pena JV, McQueen HP, Kong L, Michael D, Lomashvili EM, Cook PR. Downstream STING pathways IRF3 and NF-κB differentially regulate CCL22 in response to cytosolic dsDNA. Cancer Gene Ther 2024; 31:28-42. [PMID: 37990062 DOI: 10.1038/s41417-023-00678-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 08/22/2023] [Accepted: 10/11/2023] [Indexed: 11/23/2023]
Abstract
Double-stranded DNA (dsDNA) in the cytoplasm of eukaryotic cells is abnormal and typically indicates the presence of pathogens or mislocalized self-DNA. Multiple sensors detect cytosolic dsDNA and trigger robust immune responses via activation of type I interferons. Several cancer immunotherapy treatments also activate cytosolic nucleic acid sensing pathways, including oncolytic viruses, nucleic acid-based cancer vaccines, and pharmacological agonists. We report here that cytosolic dsDNA introduced into malignant cells can robustly upregulate expression of CCL22, a chemokine responsible for the recruitment of regulatory T cells (Tregs). Tregs in the tumor microenvironment are thought to repress anti-tumor immune responses and contribute to tumor immune evasion. Surprisingly, we found that CCL22 upregulation by dsDNA was mediated primarily by interferon regulatory factor 3 (IRF3), a key transcription factor that activates type I interferons. This finding was unexpected given previous reports that type I interferon alpha (IFN-α) inhibits CCL22 and that IRF3 is associated with strong anti-tumor immune responses, not Treg recruitment. We also found that CCL22 upregulation by dsDNA occurred concurrently with type I interferon beta (IFN-β) upregulation. IRF3 is one of two transcription factors downstream of the STimulator of INterferon Genes (STING), a hub adaptor protein through which multiple dsDNA sensors transmit their signals. The other transcription factor downstream of STING, NF-κB, has been reported to regulate CCL22 expression in other contexts, and NF-κB has also been associated with multiple pro-tumor functions, including Treg recruitment. However, we found that NF-κB in the context of activation by cytosolic dsDNA contributed minimally to CCL22 upregulation compared with IRF3. Lastly, we observed that two strains of the same cell line differed profoundly in their capacity to upregulate CCL22 and IFN-β in response to dsDNA, despite apparent STING activation in both cell lines. This finding suggests that during tumor evolution, cells can acquire, or lose, the ability to upregulate CCL22. This study adds to our understanding of factors that may modulate immune activation in response to cytosolic DNA and has implications for immunotherapy strategies that activate DNA sensing pathways in cancer cells.
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Affiliation(s)
- Jihyun Kim
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Jocelyn V Pena
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Hannah P McQueen
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Lingwei Kong
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Dina Michael
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Elmira M Lomashvili
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA
| | - Pamela R Cook
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, USA.
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Kim HJ, Song HK, Park SH, Jang S, Park KS, Song KH, Lee SK, Kim T. Terminalia chebula Retz. extract ameliorates the symptoms of atopic dermatitis by regulating anti-inflammatory factors in vivo and suppressing STAT1/3 and NF-ĸB signaling in vitro. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 104:154318. [PMID: 35830757 DOI: 10.1016/j.phymed.2022.154318] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 06/29/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Terminalia chebula (TC) is a traditional medicinal plant used for treating various diseases in humans. However, pharmacological mechanisms underlying the effects of TC in atopic treatment remain unelucidated. HYPOTHESIS/PURPOSE We investigated the therapeutic effects of TC extract in a mouse model of atopic dermatitis (AD) in vivo and the anti-inflammatory mechanism in vitro. STUDY DESIGN/METHODS For the in vivo study, AD was induced by Dermatophagoides farinae extract (Dfe) in NC/Nga mice. After 14 days of oral administration, the effects of TC concentrations of 30, 100, and 300 mg/kg were analyzed by assessing morphological changes visually; measuring serum levels of inflammatory chemokines/cytokines, IgE, histamine, MDC, TARC, RANTES, and TSLP using ELISA kits; and counting infiltrated mast cells. For in vitro analyses, we used IFNγ/TNF-α-stimulated human keratinocyte cell lines to study the mechanism of action. The production of chemokines/cytokines in the IFNγ/TNF-α-stimulated HaCaT cells was measured using ELISA and a bead array kit. The signaling pathways were analyzed by western blotting and the expression of the transcriptional factors using RT-PCR and luciferase assay. RESULTS Administration of TC significantly alleviated AD-like symptoms in vivo and decreased the ear thickness, dermatitis score, keratinization, and mast cell infiltration. It also resulted in decreased serum levels of IgE, histamine, and inflammation-related mediators MDC, TARC, RANTES, and TSLP compared with those in the Dfe treatment group. Moreover, TC downregulated the expression of the inflammatory chemokines RANTES and MDC in IFNγ/TNF-α-stimulated HaCaT cells. TC inhibited phosphorylated STAT1/3 and NK-κB subunits and nuclear translocation of NF-κB. It also suppressed the transcription of IFNγ, IL-6, IL-8 and MCP-1 in the IFNγ/TNF-α-stimulated HaCaT cells. TC and its constituents, chebulic acid, gallic acid, corlagin, chebulanin, chbulagic acid, ellagic acid, and chebulinic acid, strongly inhibited the nuclear translocation of NF-κB, STAT1, and STAT3 and decreased the expression of inflammatory cytokines at the mRNA level. CONCLUSIONS Overall, TC extract alleviated AD-like symptoms by regulating anti-inflammatory factors in vivo and suppressing STAT1/3 and NF-κB signaling in vitro. In addition, our results show the in vivo effect of partial improvements in AD, as well as the in vitro effect on inflammatory factors by the constituents of TC. This finding provides that TC extract and its components could be potential therapeutic drugs for AD.
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Affiliation(s)
- Hye Jin Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea; College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, South Korea
| | - Hyun-Kyung Song
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
| | - Sun Haeng Park
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
| | - Seol Jang
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
| | - Ki-Sun Park
- KM Science Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
| | - Kwang Hoon Song
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
| | - Sang Kook Lee
- College of Pharmacy, Natural Products Research Institute, Seoul National University, Seoul 08826, South Korea.
| | - Taesoo Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea.
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Dias MKHM, Madusanka DMD, Han EJ, Kim HS, Jeon YJ, Jee Y, Kim KN, Lee K, Fernando IPS, Ahn G. Sargassum horneri (Turner) C. Agardh ethanol extract attenuates fine dust-induced inflammatory responses and impaired skin barrier functions in HaCaT keratinocytes. JOURNAL OF ETHNOPHARMACOLOGY 2021; 273:114003. [PMID: 33705923 DOI: 10.1016/j.jep.2021.114003] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/09/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sargassum horneri (Turner) C. Agardh is well known in East Asia as an edible brown alga rich in bioactive compounds. It has an ethnopharmacological significance in traditional Chinese medicine to treat inflammatory disorders varying from edema, furuncles, dysuria to cardiovascular diseases. AIM OF THE STUDY Surge of fine dust (FD), in densely populated areas, have been reported to cause adverse health conditions ranging from respiratory diseases to inflammatory skin disorders. The current study investigates the protective effects of an ethanol extract from S. horneri (SHE) on FD-induced inflammatory responses and impaired skin hydration in HaCaT keratinocytes. MATERIALS AND METHODS Intracellular reactive oxygen species (ROS) generation was evaluated with the 2',7'-Dichlorofluorescin diacetate (DCFH-DA) stain. Anti-inflammatory properties of SHE in FD-stimulated HaCaT keratinocytes were investigated for the suppression of nuclear factor (NF)-κB and mitogen-activated protein kinase (MAPK) pathways and downregulation of pro-inflammatory cytokines. As a means of studying FD-induced skin barrier disruption and the effects of SHE on stratum corneum hydration-controlling factors, tight junction regulatory mediators, and hyaluronic acid (HA) production were evaluated using keratinocytes. RESULTS SHE suppressed the intracellular ROS production, simultaneously improving cell viability in FD-stimulated keratinocytes. Also, SHE upregulated anti-inflammatory cytokine interleukin (IL)-4 while downregulating inflammatory cytokines IL-1β, IL-6, IL-8, tumor necrosis factor (TNF)-α; epidermal and epithelial cytokines IL-25, IL-33, and thymic stromal lymphopoietin (TSLP); thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and regulated upon activation, normally T-expressed, and presumably secreted expression and suppressed (RANTES) chemokine, MAPK and NF-κB mediators in a dose-dependent manner. Furthermore, SHE ameliorated filaggrin, involucrin, lymphoepithelial Kazal-type-related inhibitor (LEKTI), signifying its beneficial effects on deteriorated skin hydration caused by FD-induced inflammation. SHE further exhibited its skin protective effects regulating the tight junction proteins; Occludin, zonula occludens (ZO)-1, claudin-1, claudin-4, claudin-7, and claudin-23 while increasing the production of HA minimizing skin damage. CONCLUSIONS Anti-inflammatory effects of, SHE against FD-induced keratinocyte inflammation is attributable to the suppression of upstream MAPK and NF-κB mediators. SHE indicated potential anti-inflammatory properties attenuating deteriorated skin barrier function in HaCaT keratinocytes. The effects are attributable to the polyphenols and other antioxidant compounds in SHE. Further studies could envisage the use of SHE for developing rejuvenating cosmetics.
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Affiliation(s)
| | | | - Eui Jeong Han
- Department of Food Technology and Nutrition, Chonnam National University, Yeosu, 59626, Republic of Korea.
| | - Hyun-Soo Kim
- National Marine Biodiversity Institute of Korea, 75, Jangsan-ro 101 gil, Janghang-eup, Seocheon, 33662, Republic of Korea.
| | - You-Jin Jeon
- Department of Marine Life Science, School of Marine Biomedical Sciences, Jeju National University, Jeju, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea.
| | - Youngheun Jee
- Department of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, 63243, Republic of Korea; Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, Jeju, 63243, Republic of Korea.
| | - Kil-Nam Kim
- Chuncheon Center, Korea Basic Science Institute (KBSI), Chuncheon, 24341, Republic of Korea.
| | - Kyounghoon Lee
- Division of Fisheries Science, Chonnam National University, Yeosu, 59626, Republic of Korea.
| | | | - Ginnae Ahn
- Department of Food Technology and Nutrition, Chonnam National University, Yeosu, 59626, Republic of Korea; Department of Marine Bio-Food Sciences, Chonnam National University, Yeosu, 59626, Republic of Korea.
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Li Z, Roy S, Ranasinghe C. IL-13Rα2 Regulates the IL-13/IFN-γ Balance during Innate Lymphoid Cell and Dendritic Cell Responses to Pox Viral Vector-Based Vaccination. Vaccines (Basel) 2021; 9:440. [PMID: 34062727 PMCID: PMC8147251 DOI: 10.3390/vaccines9050440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/08/2021] [Accepted: 04/23/2021] [Indexed: 12/02/2022] Open
Abstract
We have shown that manipulation of IL-13 and STAT6 signaling at the vaccination site can lead to different innate lymphoid cell (ILC)/dendritic cell (DC) recruitment, resulting in high avidity/poly-functional T cells and effective antibody differentiation. Here we show that permanent versus transient blockage of IL-13 and STAT6 at the vaccination site can lead to unique ILC-derived IL-13 and IFN-γ profiles, and differential IL-13Rα2, type I and II IL-4 receptor regulation on ILC. Specifically, STAT6-/- BALB/c mice given fowl pox virus (FPV) expressing HIV antigens induced elevated ST2/IL-33R+ ILC2-derived IL-13 and reduced NKp46+/- ILC1/ILC3-derived IFN-γ expression, whilst the opposite (reduced IL-13 and elevated IFN-γ expression) was observed during transient inhibition of STAT6 signaling in wild type BALB/c mice given FPV-HIV-IL-4R antagonist vaccination. Interestingly, disruption/inhibition of STAT6 signaling considerably impacted IL-13Rα2 expression by ST2/IL-33R+ ILC2 and NKp46- ILC1/ILC3, unlike direct IL-13 inhibition. Consistently with our previous findings, this further indicated that inhibition of STAT6 most likely promoted IL-13 regulation via IL-13Rα2. Moreover, the elevated ST2/IL-33R+ IL-13Rα2+ lung ILC2, 24 h post FPV-HIV-IL-4R antagonist vaccination was also suggestive of an autocrine regulation of ILC2-derived IL-13 and IL-13Rα2, under certain conditions. Knowing that IL-13 can modulate IFN-γ expression, the elevated expression of IFN-γR on lung ST2/IL-33R+ ILC2 provoked the notion that there could also be inter-regulation of lung ILC2-derived IL-13 and NKp46- ILC1/ILC3-derived IFN-γ via their respective receptors (IFN-γR and IL-13Rα2) at the lung mucosae early stages of vaccination. Intriguingly, under different IL-13 conditions differential regulation of IL-13/IL-13Rα2 on lung DC was also observed. Collectively these findings further substantiated that IL-13 is the master regulator of, not only DC, but also different ILC subsets at early stages of viral vector vaccination, and responsible for shaping the downstream adaptive immune outcomes. Thus, thoughtful selection of vaccine strategies/adjuvants that can manipulate IL-13Rα2, and STAT6 signaling at the ILC/DC level may prove useful in designing more efficacious vaccines against different/chronic pathogens.
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Affiliation(s)
- Zheyi Li
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia; (Z.L.); (S.R.)
| | - Sreeja Roy
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia; (Z.L.); (S.R.)
- Department of Immunology & Microbial Disease, Albany Medical College, 47 New Scotland Ave, Albany, NY 12208-3479, USA
| | - Charani Ranasinghe
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT 2601, Australia; (Z.L.); (S.R.)
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Gong Y, Wei S, Zhang M, Jin X, Hou B, Wang D. Serum interferon‐gamma/interleukin‐4 imbalance in patients with Eales' disease. Clin Exp Optom 2021; 93:228-32. [PMID: 20533927 DOI: 10.1111/j.1444-0938.2010.00482.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Yan Gong
- Department of Ophthalmology, General Hospital of Chinese PLA, Beijing, China
- Department of Ophthalmology, Armed Police General Hospital, Beijing, China E‐mail:
| | - Shi‐hui Wei
- Department of Ophthalmology, General Hospital of Chinese PLA, Beijing, China
| | - Mao‐nian Zhang
- Department of Ophthalmology, General Hospital of Chinese PLA, Beijing, China
| | - Xin Jin
- Department of Ophthalmology, General Hospital of Chinese PLA, Beijing, China
| | - Bao‐ke Hou
- Department of Ophthalmology, General Hospital of Chinese PLA, Beijing, China
| | - Dan Wang
- Department of Ophthalmology, Armed Police General Hospital, Beijing, China E‐mail:
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Ha Y, Lee WH, Jeong J, Park M, Ko JY, Kwon OW, Lee J, Kim YJ. Pyropia yezoensis Extract Suppresses IFN-Gamma- and TNF-Alpha-Induced Proinflammatory Chemokine Production in HaCaT Cells via the Down-Regulation of NF-κB. Nutrients 2020; 12:nu12051238. [PMID: 32349358 PMCID: PMC7285056 DOI: 10.3390/nu12051238] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/22/2020] [Accepted: 04/25/2020] [Indexed: 12/15/2022] Open
Abstract
Pyropia yezoensis, a red alga, is popular and harvested a lot in East Asia and is famous for its medicinal properties attributable to its bioactive compounds including amino acids (porphyra-334 and shinorine, etc.), polysaccharides, phytosterols, and pigments, but its anti-inflammatory effect and mechanism of anti-atopic dermatitis (AD) have not been elucidated. In this study, we investigate the anti-AD effect of P. yezoensis extract (PYE) on mRNA and protein levels of the pro-inflammatory chemokines, thymus, and activation-regulated chemokine (TARC/CCL17) and macrophage-derived chemokine (MDC/CCL22), in human HaCaT keratinocyte cells treated to interferon (IFN)-γ or tumor necrosis factor (TNF)-α (10 ng/mL each). The effect of the PYE on extracellular signal-regulated kinase (ERK) and other mitogen-activated protein kinases (MAPKs) was related to its suppression of TARC and MDC production by blocking NF-κB activation in HaCaT cells. Furthermore, astaxanthin and xanthophyll from P. yezoensis were identified as anti-AD candidate compounds. These results suggest that the PYE may improve AD and contained two carotenoids by regulating pro-inflammatory chemokines.
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Affiliation(s)
- Yuna Ha
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
- Department of Cosmetic Science and Management, Graduate School, Incheon National University, Incheon 22012, Korea
| | - Won-Hwi Lee
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
- Department of Marine Sciences, Incheon National University, Incheon 22012, Korea
| | - JaeWoo Jeong
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
- Department of Cosmetic Science and Management, Graduate School, Incheon National University, Incheon 22012, Korea
| | - Mira Park
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
| | - Ju-Young Ko
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
| | - Oh Wook Kwon
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
| | - Jongsung Lee
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City 164-19, Gyunggi Do, Korea
- Correspondence: (J.L); (Y.-J.K.); Tel.: +82-32-835-8861 (Y.-J.K.)
| | - Youn-Jung Kim
- Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Korea; (Y.H.); (W.-H.L.); (J.J.); (M.P.); (J.-Y.K.); (O.W.K.)
- Department of Cosmetic Science and Management, Graduate School, Incheon National University, Incheon 22012, Korea
- Department of Marine Sciences, Incheon National University, Incheon 22012, Korea
- Correspondence: (J.L); (Y.-J.K.); Tel.: +82-32-835-8861 (Y.-J.K.)
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Yamamoto-Hanada K, Kawakami E, Saito-Abe M, Sato M, Mitsubuchi H, Oda M, Katoh T, Sanefuji M, Ohga S, Kuwajima M, Mise N, Ikegami A, Kayama F, Senju A, Shimono M, Kusuhara K, Yamazaki S, Nakayama SF, Matsumoto K, Saito H, Ohya Y. Exploratory analysis of plasma cytokine/chemokine levels in 6-year-old children from a birth cohort study. Cytokine 2020; 130:155051. [PMID: 32151964 DOI: 10.1016/j.cyto.2020.155051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/11/2020] [Accepted: 02/21/2020] [Indexed: 01/25/2023]
Abstract
This study aimed to reveal a new dimension of allergy profiles in the general population by using machine learning to explore complex relationships among various cytokines/chemokines and allergic diseases (asthma and atopic dermatitis; AD). We examined the symptoms related to asthma and AD and the plasma levels of 72 cytokines/chemokines obtained from a general population of 161 children at 6 years of age who participated in a pilot birth cohort study of the Japan Environment and Children's Study (JECS). The children whose signs and symptoms fulfilled the criteria of AD, which are mostly based on questionnaire including past symptoms, tended to have higher levels of the two chemokine ligands, CCL17 and CCL27, which are used for diagnosis of AD. On the other hand, another AD-related chemokine CCL22 level in plasma was higher only in children with visible flexural eczema, which is one of AD diagnostic criteria but was judged on the same day of blood examination unlike other criteria. Here, we also developed an innovative method of machine learning for elucidating the complex cytokine/chemokine milieu related to symptoms of allergic diseases by using clustering analysis based on the random forest dissimilarity measure that relies on artificial intelligence (AI) technique. To our surprise, the majority of children showing at least any asthma-related symptoms during the last month were divided by AI into the two clusters, either cluster-2 having elevated levels of IL-33 (related to eosinophil activation) or cluster-3 having elevated levels of CXCL7/NAP2 (related to neutrophil activation), among the total three clusters. Future studies will clarify better approach for allergic diseases by endotype classification.
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Affiliation(s)
- Kiwako Yamamoto-Hanada
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Medical Support Center for the Japan Environment and Children's Study, National Research Institute for Child Health and Development, Tokyo, Japan.
| | - Eiryo Kawakami
- RIKEN Medical Sciences Innovation Hub Program, Kanagawa, Japan; Artificial Intelligence Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Mayako Saito-Abe
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Medical Support Center for the Japan Environment and Children's Study, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Miori Sato
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Medical Support Center for the Japan Environment and Children's Study, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hiroshi Mitsubuchi
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kumamoto University, Kumamoto, Japan
| | - Masako Oda
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kumamoto University, Kumamoto, Japan
| | - Takahiko Katoh
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kumamoto University, Kumamoto, Japan
| | - Masafumi Sanefuji
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kyushu University, Fukuoka, Japan
| | - Shouichi Ohga
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kyushu University, Fukuoka, Japan
| | - Mari Kuwajima
- Regional Center for Pilot Study of Japan Environment and Children's Study, Kyushu University, Fukuoka, Japan
| | - Nathan Mise
- Regional Center for Pilot Study of Japan Environment and Children's Study, Jichi Medical University, Tochigi, Japan
| | - Akihiko Ikegami
- Regional Center for Pilot Study of Japan Environment and Children's Study, Jichi Medical University, Tochigi, Japan
| | - Fujio Kayama
- Regional Center for Pilot Study of Japan Environment and Children's Study, Jichi Medical University, Tochigi, Japan
| | - Ayako Senju
- Regional Center for Pilot Study of Japan Environment and Children's Study, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Masayuki Shimono
- Regional Center for Pilot Study of Japan Environment and Children's Study, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Koichi Kusuhara
- Regional Center for Pilot Study of Japan Environment and Children's Study, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Ibaraki, Japan.
| | - Kenji Matsumoto
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirohisa Saito
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Yukihiro Ohya
- Allergy Center, Medical Support Center for the Japan Environment and Children's Study, National Center for Child Health and Development, Tokyo, Japan; Medical Support Center for the Japan Environment and Children's Study, National Research Institute for Child Health and Development, Tokyo, Japan
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9
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Kim HJ, Baek J, Lee JR, Roh JY, Jung Y. Optimization of Cytokine Milieu to Reproduce Atopic Dermatitis-related Gene Expression in HaCaT Keratinocyte Cell Line. Immune Netw 2018; 18:e9. [PMID: 29736291 PMCID: PMC5928421 DOI: 10.4110/in.2018.18.e9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/05/2018] [Indexed: 12/01/2022] Open
Abstract
Although atopic dermatitis (AD) is characterized by cytokine production predominantly mediated by T helper (Th) 2 cells, AD pathogenesis also involves innate immune and Th1 cells. To optimize the cytokine milieu required for accurate reproduction of AD-related gene expression profile in vitro, we evaluated the expression pattern of CCL22, CCL17, IL5, IL13, IL33, IL25, TSLP, FLG, and LOR in human lesional AD skin and cytokine-stimulated HaCaT cells. An increase in Th2 mediators (IL5, IL13, CCL22, CCL17, IL25, IL33, and TSLP) and a decrease in genes related to cornified cell envelope (filaggrin and loricrin) were observed in human AD lesions. Innate (tumor necrosis factor-α) and/or Th1/Th2 adaptive cytokines (interferon-γ/IL-4) were required for inducing these inflammatory changes in HaCaT cells, implying that a complex network of innate, Th1, and Th2 cytokines drives AD-like changes. Therefore, stimulation with various combinations of cytokines, beyond Th2 polarization, is necessary when HaCaT cell line is used to study genetic changes implicated in AD pathogenesis.
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Affiliation(s)
- Hee Joo Kim
- Department of Dermatology, Gachon Gil Medical Center, School of Medicine, Gachon University, Incheon 21565, Korea
| | - Jinok Baek
- Department of Dermatology, Gachon Gil Medical Center, School of Medicine, Gachon University, Incheon 21565, Korea
| | - Jong Rok Lee
- Department of Dermatology, Gachon Gil Medical Center, School of Medicine, Gachon University, Incheon 21565, Korea
| | - Joo Young Roh
- Department of Dermatology, Gachon Gil Medical Center, School of Medicine, Gachon University, Incheon 21565, Korea
| | - YunJae Jung
- Department of Microbiology, School of Medicine, Gachon University, Incheon 21565, Korea.,Gachon Advanced Institute for Health Science & Technology, School of Medicine, Gachon University, Incheon 21565, Korea
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10
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Hsieh PL, Rybalko V, Baker AB, Suggs LJ, Farrar RP. Recruitment and therapeutic application of macrophages in skeletal muscles after hind limb ischemia. J Vasc Surg 2017; 67:1908-1920.e1. [PMID: 29273298 DOI: 10.1016/j.jvs.2017.04.070] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/16/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Peripheral arterial disease can cause not only ischemia but also skeletal muscle damage. It has been known that macrophages (MPs) play an important role in coordinating muscle repair; however, phenotype transition of monocyte-MP in ischemic muscle has not been well defined. Hence, the purpose of this study was to examine the temporal recruitment of MPs and to explore their therapeutic effect on ischemic muscle regeneration. METHODS Unilateral femoral artery excision was performed on C57BL/6 mice. Myeloid cells were isolated from the ischemic muscles, characterized using flow cytometry. Bone marrow-derived MPs were injected (2 × 106 cells) into the ischemic gastrocnemius muscle 24 hours after injury. Blood flow recovery was measured using laser speckle imaging. Functional outcome was evaluated by assessing the contractile force of ischemic muscles. Histologic analysis included quantification of myofiber size, collagen deposition, number of inflammatory and MyoD-expressing cells, and capillary density. RESULTS Neutrophils and inflammatory monocytes-MPs were present at day 1 after injury. The mature MPs then remained elevated as the dominant population from day 5 to day 21 with the observation of regenerating fibers. Functional measurements revealed that the force production was significantly enhanced after treatment with proinflammatory M1 MPs (94.9% vs 77.9%; P < .05), and this was consistent with increased myofiber size, capillary- fiber ratio, and perfusion (78.6% vs 39.9%; P < .05). Moreover, the percentage of MyoD-expressing nuclei was significantly higher at day 4, indicating that M1 MPs may hasten muscle repair. Whereas early delivery of anti-inflammatory M2 MPs improved myofiber size, this was accompanied by persistent fibrosis suggesting ongoing tissue remodeling, and lower force production was observed. CONCLUSIONS We demonstrated the dynamics of myeloid cells in skeletal muscle after ischemic insult, and the administration of exogenous M1 MPs in a temporally coordinated manner successfully improved angiogenesis and skeletal muscle regeneration. Our results suggested that cell therapy using MPs may be a promising adjunctive therapeutic approach for peripheral arterial disease.
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Affiliation(s)
- Pei-Ling Hsieh
- Department of Kinesiology, The University of Texas at Austin, Austin, Tex
| | - Viktoriya Rybalko
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Tex
| | - Aaron B Baker
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Tex
| | - Laura J Suggs
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Tex
| | - Roger P Farrar
- Department of Kinesiology, The University of Texas at Austin, Austin, Tex.
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11
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The C-C Chemokines CCL17 and CCL22 and Their Receptor CCR4 in CNS Autoimmunity. Int J Mol Sci 2017; 18:ijms18112306. [PMID: 29099057 PMCID: PMC5713275 DOI: 10.3390/ijms18112306] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/20/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system (CNS). It affects more than two million people worldwide, mainly young adults, and may lead to progressive neurological disability. Chemokines and their receptors have been shown to play critical roles in the pathogenesis of experimental autoimmune encephalomyelitis (EAE), a murine disease model induced by active immunization with myelin proteins or transfer of encephalitogenic CD4+ T cells that recapitulates clinical and neuropathological features of MS. Chemokine ligand-receptor interactions orchestrate leukocyte trafficking and influence multiple pathophysiological cellular processes, including antigen presentation and cytokine production by dendritic cells (DCs). The C-C class chemokines 17 (CCL17) and 22 (CCL22) and their C-C chemokine receptor 4 (CCR4) have been shown to play an important role in homeostasis and inflammatory responses. Here, we provide an overview of the involvement of CCR4 and its ligands in CNS autoimmunity. We review key clinical studies of MS together with experimental studies in animals that have demonstrated functional roles of CCR4, CCL17, and CCL22 in EAE pathogenesis. Finally, we discuss the therapeutic potential of newly developed CCR4 antagonists and a humanized anti-CCR4 antibody for treatment of MS.
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12
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El Darzi E, Bazzi S, Daoud S, Echtay KS, Bahr GM. Differential regulation of surface receptor expression, proliferation, and apoptosis in HaCaT cells stimulated with interferon-γ, interleukin-4, tumor necrosis factor-α, or muramyl dipeptide. Int J Immunopathol Pharmacol 2017; 30:130-145. [PMID: 28449603 PMCID: PMC5806789 DOI: 10.1177/0394632017707611] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Keratinocytes are routinely subjected to both internal and external stimulation. This study investigates the effects of interferon gamma, interleukin-4, tumor necrosis factor alpha, and the synthetic immunomodulator muramyl dipeptide on the human keratinocyte cell line, HaCaT. Following HaCaT stimulation with cytokines or muramyl dipeptide for different time periods, changes in the expression of different cell surface receptors, cell proliferation, and cell apoptosis were evaluated by flow cytometry, tritiated thymidine uptake, and annexin-V staining, respectively. A significant decrease in the expression of CD49d was found upon treatment with interleukin-4. Interferon gamma and tumor necrosis factor alpha increased the expression of intercellular adhesion molecule 1 and major histocompatibility complex class I, whereas major histocompatibility complex class II and CD1b were only upregulated by interferon gamma. Interferon gamma and tumor necrosis factor alpha had opposite effects regarding CD119 expression, with the former downregulating, while the latter upregulating its expression. Of the stimuli tested, only interferon gamma and tumor necrosis factor alpha significantly inhibited proliferation of HaCaT cells, yet only interferon gamma played a significant role in inducing HaCaT cell apoptosis. Our data demonstrate differential effects of the three tested cytokines on keratinocytes and reveal that the absence of HaCaT cell responses to muramyl dipeptide is associated with undetectable levels of its cytoplasmic receptor, nucleotide-binding oligomerization domain-containing protein 2.
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Affiliation(s)
- Emale El Darzi
- 1 Department of Biomedical Sciences, Faculty of Medicine and Medical Sciences, University of Balamand, Al Kurah, Lebanon
| | - Samer Bazzi
- 2 Department of Biology, Faculty of Sciences, University of Balamand, Al Kurah, Lebanon
| | - Sarah Daoud
- 1 Department of Biomedical Sciences, Faculty of Medicine and Medical Sciences, University of Balamand, Al Kurah, Lebanon
| | - Karim S Echtay
- 1 Department of Biomedical Sciences, Faculty of Medicine and Medical Sciences, University of Balamand, Al Kurah, Lebanon
| | - Georges M Bahr
- 1 Department of Biomedical Sciences, Faculty of Medicine and Medical Sciences, University of Balamand, Al Kurah, Lebanon
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13
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Yano C, Saeki H, Komine M, Kagami S, Tsunemi Y, Ohtsuki M, Nakagawa H. Mechanism of Macrophage-Derived Chemokine/CCL22 Production by HaCaT Keratinocytes. Ann Dermatol 2015; 27:152-6. [PMID: 25834353 PMCID: PMC4377403 DOI: 10.5021/ad.2015.27.2.152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/28/2014] [Accepted: 07/07/2014] [Indexed: 01/31/2023] Open
Abstract
Background CC chemokine ligand 17 (CCL17) and CCL22 are the functional ligands for CCR4. We previously reported that inhibitors of nuclear factor-kappa B and p38 mitogen-activated protein kinase (p38 MAPK), but not of extracellular signal-related kinase (ERK), inhibited tumor necrosis factor (TNF)-α- and interferon (IFN)-γ-induced production of CCL17 by the human keratinocyte cell line, HaCaT. Further, an inhibitor of epidermal growth factor receptor (EGFR) enhanced the CCL17 production by these keratinocytes. Objective To identify the mechanism underlying CCL22 production by HaCaT cells. Methods We investigated the signal transduction pathways by which TNF-α and IFN-γ stimulate HaCaT cells to produce CCL22 by adding various inhibitors. Results TNF-α- and IFN-γ-induced CCL22 production was inhibited by PD98059, PD153035, Bay 11-7085, SB202190, c-Jun N-terminal kinase (JNK) inhibitor II, and Janus kinase (JAK) inhibitor 1. Conclusion Our results indicate that CCL22 production in HaCaT cells is dependent on ERK, EGFR, p38 MAPK, JNK, and JAK and is mediated by different signal pathways from those regulating CCL17 production. Altogether, our previous and present results suggest that EGFR activation represses CCL17 but enhances CCL22 production by these cells.
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Affiliation(s)
- Chizuko Yano
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - Hidehisa Saeki
- Department of Dermatology, Nippon Medical School, Tokyo, Japan
| | - Mayumi Komine
- Department of Dermatology, Jichi Medical University, Shimotsuke, Japan
| | - Shinji Kagami
- Department of Dermatology, Kanto Central Hospital, Tokyo, Japan
| | - Yuichiro Tsunemi
- Department of Dermatology, Tokyo Women's Medical University, Tokyo, Japan
| | - Mamitaro Ohtsuki
- Department of Dermatology, Jichi Medical University, Shimotsuke, Japan
| | - Hidemi Nakagawa
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
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Choi JK, Oh HM, Lee S, Kwon TK, Shin TY, Rho MC, Kim SH. Salvia plebeia suppresses atopic dermatitis-like skin lesions. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2015; 42:967-85. [PMID: 25004886 DOI: 10.1142/s0192415x1450061x] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Salvia plebeia R. Br. (Lamiaceae) has been used for folk medicines in Asian countries, including Korea and China, to treat skin inflammatory diseases and asthma. In this study, we investigated the effects of S. plebeia extract (SPE) on atopic dermatitis (AD)-like skin lesions and defined underlying mechanisms of action. We established an AD model in BALB/c mice by repeated local exposure of house dust mite extract (Dermatophagoides farinae extract, DFE) and 2,4-dinitrochlorobenzene (DNCB) to the ears. Repeated alternative treatment of DFE/DNCB caused AD-like skin lesions. The oral administration of SPE decreased AD symptoms based on ear thickness and histopathological analysis, in addition to serum IgE and IgG2a levels. SPE suppressed mast cell infiltration into the ear and serum histamine level. SPE inhibited Th1/Th2/Th17 phenotype CD4(+) T lymphocytes expansion in the lymph node and the expression of Th1/Th2/Th17 cytokines in the ear tissue. To define the underlying mechanisms of action, the tumor necrosis factor (TNF)-α and interferon (IFN)-γ activated human keratinocytes (HaCaT) model was used. SPE significantly suppressed the expression of cytokines and chemokines through the down-regulation of mitogen-activated protein kinases, nuclear factor-κB, and STAT1 in HaCaT cells. Taken together, our results suggest that SPE might be a candidate for the treatment of AD.
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Affiliation(s)
- Jin Kyeong Choi
- BK21 Plus KNU Biomedical Convergence Program, Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu 700-422, Republic of Korea
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15
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Kang GJ, Han SC, Kang NJ, Koo DH, Park DB, Eun SY, Kang HK, Yoo ES. Quercetagetin inhibits macrophage-derived chemokine in HaCaT human keratinocytes via the regulation of signal transducer and activator of transcription 1, suppressor of cytokine signalling 1 and transforming growth factor-β1. Br J Dermatol 2014; 171:512-23. [PMID: 24602010 DOI: 10.1111/bjd.12938] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Inflammatory chemokines, such as macrophage-derived chemokine (MDC/CCL22), are elevated in the serum and lesioned skin of patients with atopic dermatitis (AD), and are ligands for C-C chemokine receptor 4, which is predominantly expressed on T helper 2 lymphocytes, basophils and natural killer cells. We have previously reported that quercetagetin has an inhibitory activity on inflammatory chemokines, which is induced by interferon (IFN)-γ and tumour necrosis factor (TNF)-α, occurring via inhibition of the signal transducer and activator of transcription 1 (STAT1) signal. OBJECTIVES To investigate the specific mechanisms of quercetagetin on the STAT1 signal. METHODS We confirmed the inhibitory activity of quercetagetin on MDC and STAT1 in HaCaT keratinocytes. The interaction between STAT1 and IFN-γR1 was investigated using immunoprecipitation. The small interfering RNA approach was used to investigate the role of suppressor of cytokine signalling 1 (SOCS1) and transforming growth factor (TGF)-β1 induced by quercetagetin. RESULTS Quercetagetin inhibited the expression of MDC at both the protein and mRNA levels in IFN-γ- and TNF-α-stimulated HaCaT human keratinocytes. Moreover, quercetagetin inhibited the phosphorylation of STAT1 through upregulation of SOCS1. Increased expression of SOCS1 disrupted the binding of STAT1 to IFN-γR1. Furthermore, quercetagetin augmented the expression of TGF-β1, which is known to modulate the immune response and inflammation. CONCLUSIONS These results suggest that quercetagetin may be a potent inhibitor of the STAT1 signal, which could be a new molecular target for anti-inflammatory treatment, and may thus have therapeutic applications as an immune modulator in inflammatory diseases such as AD.
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Affiliation(s)
- G-J Kang
- Department of Pharmacology and, Jeju National University, Jeju, Korea
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16
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Sadakane K, Ichinose T, Takano H, Yanagisawa R, Koike E, Inoue KI. The alkylphenols 4-nonylphenol, 4-tert-octylphenol and 4-tert-butylphenol aggravate atopic dermatitis-like skin lesions in NC/Nga mice. J Appl Toxicol 2013; 34:893-902. [DOI: 10.1002/jat.2911] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/21/2013] [Accepted: 06/21/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Kaori Sadakane
- Department of Health Sciences; Oita University of Nursing and Health Sciences; Megusuno Oita City Oita Japan
| | - Takamichi Ichinose
- Department of Health Sciences; Oita University of Nursing and Health Sciences; Megusuno Oita City Oita Japan
| | - Hirohisa Takano
- Department of Environmental Engineering; Kyoto University Graduate School of Engineering; Nishikyo-ku Kyoto Japan
| | - Rie Yanagisawa
- Center for Environmental Health Sciences; National Institute for Environmental Studies; Tsukuba City Ibaraki Japan
| | - Eiko Koike
- Center for Environmental Health Sciences; National Institute for Environmental Studies; Tsukuba City Ibaraki Japan
| | - Ken-ichiro Inoue
- Center for Medical Science; International University of Health and Welfare; Otawara Tochigi Japan
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Choi JH, Jin SW, Park BH, Kim HG, Khanal T, Han HJ, Hwang YP, Choi JM, Chung YC, Hwang SK, Jeong TC, Jeong HG. Cultivated ginseng inhibits 2,4-dinitrochlorobenzene-induced atopic dermatitis-like skin lesions in NC/Nga mice and TNF-α/IFN-γ-induced TARC activation in HaCaT cells. Food Chem Toxicol 2013; 56:195-203. [PMID: 23454147 DOI: 10.1016/j.fct.2013.02.037] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 02/14/2013] [Accepted: 02/17/2013] [Indexed: 11/24/2022]
Abstract
Ginseng contains many bioactive constituents, including various ginsenosides that are believed to have anti-allergic, anti-oxidant, and immunostimulatory activities; however, its effects on atopic dermatitis (AD) remain unclear. In the current study, we hypothesized that cultivated ginseng (CG) would inhibit 2,4-dinitrochlorobenzene (DNCB)-induced AD-like skin lesions in NC/Nga mice by regulating the T helper (Th)1/Th2 balance. Also, CG inhibits TNF-α/IFN-γ-induced thymus- and activation-regulated chemokine (TARC) expression through nuclear factor-kappa B (NF-κB)-dependent signaling in HaCaT cells. CG ameliorated DNCB-induced dermatitis severity, serum levels of IgE and TARC, and mRNA expression of TARC, TNF-α, IFN-γ, IL-4, IL-5, and IL-13 in mice. Histopathological examination showed reduced thickness of the epidermis/dermis and dermal infiltration of inflammatory cells in the ears. Furthermore, CG suppressed the TNF-α/IFN-γ-induced mRNA expression of TARC in HaCaT cells. CG inhibited TNF-α/IFN-γ-induced NF-κB activation. These results suggest that CG inhibited the development of the AD-like skin symptoms by modulating Th1 and Th2 responses in the skin lesions in mice and TARC expression by suppressing TNF-α/IFN-γ-induced NF-κB activation in keratinocytes, and so may be a useful tool in the therapy of AD-like skin symptoms.
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Affiliation(s)
- Jae Ho Choi
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 305-764, Republic of Korea
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Inulae Flos and Its Compounds Inhibit TNF-α- and IFN-γ-Induced Chemokine Production in HaCaT Human Keratinocytes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:280351. [PMID: 22919411 PMCID: PMC3420336 DOI: 10.1155/2012/280351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 04/27/2012] [Indexed: 12/29/2022]
Abstract
The present study is to investigate which kinds of solvent extracts of Inulae Flos inhibit the chemokine productions in HaCaT cell and whether the inhibitory capacity of Inulae Flos is related with constitutional compounds. The 70% methanol extract showed comparatively higher inhibition of thymus and activation-regulated chemokine (TARC/CCL17) in HaCaT cells, therefore this extract was further partitioned with n-hexane, chloroform, ethyl acetate, butanol, and water. The ethyl acetate fraction inhibited TARC, macrophage-derived chemokine (MDC/CCL22), and regulated on activation of normal T-cell-expressed and -secreted (RANTES/CCL5) production in HaCaT cells better than the other fractions. The compounds of Inulae Flos, such as 1,5-dicaffeoylquinic acid and luteolin, inhibited TARC, MDC, and RANTES production in HaCaT cells. 1,5-Dicaffeoylquinic acid was contained at the highest concentrations both in the 70% methanol extract and ethyl acetate fraction and inhibited the secretion of chemokines dose-dependently more than the other compounds. Luteolin also represented dose-dependent inhibition on chemokine productions although it was contained at lower levels in 70% methanol extract and solvent fractions. These results suggest that the inhibitory effects of Inulae Flos on chemokine production in HaCaT cell could be related with constituent compounds contained, especially 1,5-dicaffeoylquinic acid and luteolin.
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Choi JH, Han EH, Park BH, Kim HG, Hwang YP, Chung YC, Lee YC, Jeong HG. Platycodi Radix suppresses development of atopic dermatitis-like skin lesions. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 33:446-452. [PMID: 22407167 DOI: 10.1016/j.etap.2012.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 01/31/2012] [Accepted: 02/05/2012] [Indexed: 05/31/2023]
Abstract
Platycodi Radix has been used to treat chronic diseases, such as bronchitis, asthma, and hyperlipidemia. In this study, we examined the effect of an aqueous extract, Changkil (CK), from the root of Platycodi Radix on 2,4-dinitrochlorobenzene (DNCB)-induced atopic dermatitis (AD)-like skin lesions. Administration of CK onto DNCB-induced AD-like skin lesions in NC/Nga mice ameliorated lesion intensity scores, levels of IgE, thymus and activation-regulated chemokine (TARC), TNF-α, and IL-4 in serum and ears. In contrast, CK increased level of the immunosuppressive cytokine IL-10. Histopathological examination showed reduced thickness of the epidermis/dermis and dermal infiltration of inflammatory cells in the ears. CK also suppressed TNF-α/IFN-γ-induced mRNA expression and production of TARC in HaCaT cells. CK exerts beneficial effects on AD symptoms, suggesting that CK is an effective potential therapeutic agent for AD.
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Affiliation(s)
- Jae Ho Choi
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
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20
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Byrne AM, Goleva E, Chouiali F, Kaplan MH, Hamid QA, Leung DY. Induction of GITRL expression in human keratinocytes by Th2 cytokines and TNF-α: implications for atopic dermatitis. Clin Exp Allergy 2012; 42:550-9. [PMID: 22417213 PMCID: PMC3306062 DOI: 10.1111/j.1365-2222.2012.03956.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Glucocorticoid-induced TNF receptor-related protein ligand (GITRL), a ligand for the T cell co-stimulatory molecule GITR, is expressed by keratinocytes and involved in chemokine production. The expression of GITRL in skin inflammation remains unknown. OBJECTIVES This study investigated cytokine regulation of keratinocyte GITRL expression. METHODS Glucocorticoid-induced TNF receptor expression was evaluated in cytokine-treated human epidermal keratinocytes (HEK)s, murine PAM 212 cell line, murine and human skin explants by real time PCR, flow cytometry and immunostaining. Functional responses to GITR fusion protein were examined by real time PCR and ELISA. GITRL expression in AD and psoriasis was studied by immunohistochemistry. RESULTS Skin biopsies from STAT6VT transgenic mice, which develop spontaneous atopic skin inflammation, were found by immunofluoresence, to have increased keratinocyte GITRL expression. Exposure to Th2 cytokines augmented GITRL mRNA expression in the murine PAM 212 keratinocytic cell line and murine skin explants. In contrast, GITRL mRNA and protein expression was only increased in HEKs and human skin explants in the presence of the combination of TNF-α and Th2 cytokines. A synergistic effect of Th2 cytokines and GITR fusion protein on production of CCL17, the Th2 chemokine, by murine keratinocytes was demonstrated. Immunohistochemical staining showed that acute AD lesions have increased expression of GITRL compared with normal skin, chronic AD lesions and psoriatic plaques. CONCLUSIONS AND CLINICAL RELEVANCE Our studies demonstrate that GITRL expression is augmented by Th2 cytokines and TNF-α in keratinocytes. Increased GITRL expression in acute AD skin lesions is shown. This observation suggests a link between cytokine-regulated keratinocyte GITRL expression and its role in inflammatory responses in AD.
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Affiliation(s)
- Aideen M. Byrne
- Department of Pediatrics, National Jewish Health,1400 Jackson Street Denver, CO 80206 USA
| | - Elena Goleva
- Department of Pediatrics, National Jewish Health,1400 Jackson Street Denver, CO 80206 USA
- Department of Pediatrics, University of Colorado Denver, 13123 East 16 Avenue, Aurora, CO 80045 USA
| | - Fazila Chouiali
- Meakins-Christie Laboratories, McGill University, 3626 St. Urbain Street, Montréal, Québéc CANADA
| | - Mark H. Kaplan
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indianapolis, IN and Department of Microbiology and Immunology, Indiana University School of Medicine, 1044 West Walnut, Indianapolis, IN 46202 USA
| | - Qutayba A. Hamid
- Meakins-Christie Laboratories, McGill University, 3626 St. Urbain Street, Montréal, Québéc CANADA
| | - Donald Y.M. Leung
- Department of Pediatrics, National Jewish Health,1400 Jackson Street Denver, CO 80206 USA
- Department of Pediatrics, University of Colorado Denver, 13123 East 16 Avenue, Aurora, CO 80045 USA
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21
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Faget J, Biota C, Bachelot T, Gobert M, Treilleux I, Goutagny N, Durand I, Léon-Goddard S, Blay JY, Caux C, Ménétrier-Caux C. Early detection of tumor cells by innate immune cells leads to T(reg) recruitment through CCL22 production by tumor cells. Cancer Res 2011; 71:6143-52. [PMID: 21852386 DOI: 10.1158/0008-5472.can-11-0573] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In breast carcinomas, patient survival seems to be negatively affected by the recruitment of regulatory T cells (T(reg)) within lymphoid aggregates by CCL22. However, the mechanisms underpinning this process, which may be of broader significance in solid tumors, have yet to be described. In this study, we determined how CCL22 production is controlled in tumor cells. In human breast carcinoma cell lines, CCL22 was secreted at low basal levels that were strongly increased in response to inflammatory signals [TNF-α, IFN-γ, and interleukin (IL)-1β], contrasting with CCL17. Primary breast tumors and CD45(+) infiltrating immune cells appeared to cooperate in driving CCL22 secretion, as shown clearly in cocultures of breast tumor cell lines and peripheral blood mononuclear cells (PBMC) or their supernatants. We determined that monocyte-derived IL-1β and TNF-α are key players as monocyte depletion or neutralization of these cytokines attenuated secretion of CCL22. However, when purified monocytes were used, exogenous human IFN-γ was also required to generate this response suggesting a role for IFN-γ-producing cells within PBMCs. In this setting, we found that human IFN-γ could be replaced by the addition of (i) IL-2 or K562-activated natural killer (NK) cells or (ii) resting NK cells in the presence of anti-MHC class I antibody. Taken together, our results show a dialogue between NK and tumor cells leading to IFN-γ secretion, which in turn associates with monocyte-derived IL-1β and TNF-α to drive production of CCL22 by tumor cells and subsequent recruitment of T(reg). As one validation of this conclusion in primary breast tumors, we showed that NK cells and macrophages tend to colocalize within tumors. In summary, our findings suggest that at early times during tumorigenesis, the detection of tumor cells by innate effectors (monocytes and NK cells) imposes a selection for CCL22 secretion that recruits T(reg) to evade this early antitumor immune response.
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Fujita T, Matsuoka T, Honda T, Kabashima K, Hirata T, Narumiya S. A GPR40 agonist GW9508 suppresses CCL5, CCL17, and CXCL10 induction in keratinocytes and attenuates cutaneous immune inflammation. J Invest Dermatol 2011; 131:1660-7. [PMID: 21593768 DOI: 10.1038/jid.2011.123] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
G-protein coupled receptors (GPCR) exert diverse physiological functions, many of which are exploited therapeutically. The roles of GPCR in keratinocytes in immune response in the skin, however, remain poorly defined. In this study, we focused on Gi-coupled GPCR in keratinocytes and defined their actions in immunoactivation of cultured keratinocytes in vitro and immune reaction in the skin in vivo. We first activated HaCaT cells by tumor necrosis factor (TNF)-α and IFN-γ and examined effects of various ligands for GPCR on production of CCL17 and CCL5. Agonists for Gi-coupled receptors, particularly GW9508 for GPR40, inhibited CCL17 and CCL5 expression in a pertussis toxin-sensitive manner. The inhibitory effect by GW9508 was abrogated by depletion of GPR40 with RNA interference. GW9508 further suppressed expression of IL-11, IL-24, and IL-33 induced in HaCaT cells by TNF-α and IFN-γ. GW9508 also inhibited CCL5 and CXCL10 production by normal human epidermal keratinocytes. Administration of GW9508 topically to the skin in the challenging phase suppressed ear swelling in a repeated hapten application model and contact hypersensitivity with downregulation of CCL5 and CXCL10, respectively. Thus, in the skin, stimulation of Gi-coupled receptors attenuates induction of critical cytokines and chemokines by proinflammatory cytokines in keratinocytes and suppresses allergic inflammation in the skin.
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Affiliation(s)
- Tomoko Fujita
- Center for Innovation in Immunoregulative Technology and Therapeutics, Kyoto University, Kyoto, Japan
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Sung YY, Yoon T, Jang JY, Park SJ, Kim HK. Topical application of Rehmannia glutinosa extract inhibits mite allergen-induced atopic dermatitis in NC/Nga mice. JOURNAL OF ETHNOPHARMACOLOGY 2011; 134:37-44. [PMID: 21129471 DOI: 10.1016/j.jep.2010.11.050] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 11/11/2010] [Accepted: 11/19/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Rehmannia glutinosa is known in Asia as a traditional herbal medicine with anti-inflammatory properties. Atopic dermatitis (AD) is an inflammatory skin disease associated with enhanced T-helper 2 (Th2) lymphocyte responses to allergens that results in elevated serum IgE levels and leukocyte infiltration. Although some studies have shown that Rehmannia glutinosa extract (RGE) has anti-inflammatory and anti-allergic activities, these properties have not been demonstrated in AD. This study investigated the effectiveness of RGE as a therapeutic candidate in an AD model as well as its underlying mechanism of action. MATERIALS AND METHODS The effects of RGE on mite allergen (Dermatophagoides farinae)-treated NC/Nga mice were evaluated by skin symptom severity, ear thickness, production of serum IgE and histamine, and expression of cytokines, chemokines, and adhesion molecules in the ear lesions. In addition, the levels of thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC), and regulated on activation, normal T cell expressed and secreted (RANTES) produced in both TNF-α- and IFN-γ-stimulated human keratinocytes were investigated by enzyme-linked immunosorbent assay (ELISA). RESULTS RGE treatment of NC/Nga mice significantly reduced dermatitis scores, ear thicknesses, and serum histamine levels. Histological analyses demonstrated decreased thickening of the epidermis/dermis as well as dermal infiltration by inflammatory cells. In the ear lesions, mRNA expression levels of IL-4, TNF-α, VCAM-1, and ICAM-1 were inhibited by RGE treatment. RGE also suppressed the production of TARC, MDC, and RANTES in both the ear lesions and keratinocytes. CONCLUSIONS RGE inhibits the development of AD in NC/Nga mice by suppressing the expression of cytokines, chemokines, and adhesion molecules.
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Affiliation(s)
- Yoon-Young Sung
- Center of Herbal Resources Research, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
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Sung YY, Yoon T, Jang JY, Park SJ, Jeong GH, Kim HK. Inhibitory effects of Cinnamomum cassia extract on atopic dermatitis-like skin lesions induced by mite antigen in NC/Nga mice. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:621-628. [PMID: 21035532 DOI: 10.1016/j.jep.2010.10.043] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Revised: 09/27/2010] [Accepted: 10/22/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Cinnamomum cassia (C. cassia) has been traditionally used to treat allergic disease as well as dyspepsia, gastritis, and blood circulation disturbances. However, the antiallergic properties of C. cassia have not been fully verified using scientific tools. This study investigated the effectiveness of C. cassia extract (CCE) as an antiallergic agent in atopic dermatitis model and underlying mechanism. MATERIALS AND METHODS The effect of CCE on mite antigen-treated NC/Nga mice was evaluated by examining skin symptom severity, levels of serum IgE, tumor necrosis factor-α (TNF-α), and histamine, skin histology, and mRNA expression of cytokines in the skin lesions. Moreover, the effect of CCE on TNF-α-and interferon-γ (IFN-γ)-induced chemokine production in human keratinocytes was investigated using ELISA. RESULTS CCE treatment of NC/Nga mice reduced the dermatitis score and the levels of serum IgE, histamine, and TNF-α. Histological examination showed inhibition of the thickening of the epidermis/dermis and reduced dermal infiltration of inflammatory cells. In skin lesions, mRNA expression of IL-4, TNF-α, and thymus and activation-regulated chemokine (TARC) was inhibited by CCE treatment. The production of TARC, macrophage-derived chemokine, and RANTES from IFN-γ-and TNF-α-stimulated human keratinocytes was suppressed by CCE treatment in a dose-dependent manner. CONCLUSIONS CCE inhibits the development of atopic dermatitis-like skin lesions in NC/Nga mice by suppressing the T-helper 2 cell response.
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Affiliation(s)
- Yoon-Young Sung
- Center of Herbal Resources Research, Korea Institute of Oriental Medicine, Daejeon 305-811, Republic of Korea
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Choi BM, Oh GS, Lee JW, Mok JY, Kim DK, Jeong SI, Jang SI. Prenylated chalcone from Sophora flavescens suppresses Th2 chemokine expression induced by cytokines via heme oxygenase-1 in human keratinocytes. Arch Pharm Res 2010; 33:753-60. [PMID: 20512474 DOI: 10.1007/s12272-010-0515-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Revised: 02/02/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
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Qi XF, Kim DH, Yoon YS, Jin D, Huang XZ, Li JH, Deung YK, Lee KJ. Essential involvement of cross-talk between IFN-gamma and TNF-alpha in CXCL10 production in human THP-1 monocytes. J Cell Physiol 2009; 220:690-7. [PMID: 19472212 DOI: 10.1002/jcp.21815] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Interferon (IFN)-gamma-induced protein 10 (IP-10/CXCL10), a CXC chemokine, has been documented in several inflammatory and autoimmune disorders including atopic dermatitis and bronchial asthma. Although CXCL10 could be induced by IFN-gamma depending on cell type, the mechanisms regulating CXCL10 production following treatment with combination of IFN-gamma and TNF-alpha have not been adequately elucidated in human monocytes. In this study, we showed that TNF-alpha had more potential than IFN-gamma to induce CXCL10 production in THP-1 monocytes. Furthermore, IFN-gamma synergistically enhanced the production of CXCL10 in parallel with the activation of NF-kappaB in TNF-alpha-stimulated THP-1 cells. Blockage of STAT1 or NF-kappaB suppressed CXCL10 production. JAKs inhibitors suppressed IFN-gamma plus TNF-alpha-induced production of CXCL10 in parallel with activation of STAT1 and NF-kappaB, while ERK inhibitor suppressed production of CXCL10 as well as activation of NF-kappaB, but not that of STAT1. IFN-gamma-induced phosphorylation of JAK1 and JAK2, whereas TNF-alpha induced phosphorylation of ERK1/2. Interestingly, IFN-gamma alone had no effect on phosphorylation and degradation of IkappaB-alpha, whereas it significantly promoted TNF-alpha-induced phosphorylation and degradation of IkappaB-alpha. These results suggest that TNF-alpha induces CXCL10 production by activating NF-kappaB through ERK and that IFN-gamma induces CXCL10 production by increasing the activation of STAT1 through JAKs pathways. Of note, TNF-alpha-induced NF-kappaB may be the primary pathway contributing to CXCL10 production in THP-1 cells. IFN-gamma potentiates TNF-alpha-induced CXCL10 production in THP-1 cells by increasing the activation of STAT1 and NF-kappaB through JAK1 and JAK2.
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Affiliation(s)
- Xu-Feng Qi
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju 220-701, Gangwon, Republic of Korea
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Dodds MG, Frederiksen KS, Skak K, Hansen LT, Lundsgaard D, Thompson JA, Hughes SD. Immune activation in advanced cancer patients treated with recombinant IL-21: multianalyte profiling of serum proteins. Cancer Immunol Immunother 2009; 58:843-54. [PMID: 18925392 PMCID: PMC11030868 DOI: 10.1007/s00262-008-0600-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Accepted: 09/19/2008] [Indexed: 11/30/2022]
Abstract
PURPOSE Recombinant interleukin-21 (rIL-21) is an immune stimulating cytokine recently tested in two Phase 1 trials for immune responsive cancers. A secondary objective of these trials was to characterize pharmacodynamic responses to rIL-21 in patients. Here, we report the effects of systemic rIL-21 on serum markers of immune stimulation. EXPERIMENTAL DESIGN Recombinant IL-21 was administered by intravenous bolus injection at dose levels from 1 to 100 microg/kg using two distinct treatment regimens: thrice weekly ('3/w') for 6 weeks; or once daily for five consecutive days followed by nine dose-free days ('5 + 9'). In the absence of dose limiting toxicity, additional cycles of dosing were initiated immediately following the nine dose-free days. An array of 70 different proteins was profiled in subject serum samples from several time points during the course of the study. Hierarchical clustering analysis was performed on a normalized subset of these data. RESULTS Systemic administration of rIL-21 affected the serum levels of several cytokines, chemokines, acute-phase proteins and cell adhesion proteins. The magnitude and duration of response were dose dependent for a subset of these biomarkers. The 5 + 9 dosing regimen generally produced cyclic changes that were of greater magnitude, as compared to a more chronic stimulation with the 3/w dosing regimen. Despite these differences, rIL-21 effects on many analytes were similar between regimens when averaged over the time of treatment. Based on similar temporal, between-subject and dose response changes, groups of analytes were identified that exhibited distinct components of the rIL-21-mediated immune activation. Biomarkers indicative of lymphocyte activation (increased IL-16, decreased RANTES), acute phase response (increased CRP, ferritin), myeloid activation (increased MDC, MIP-1 alpha), and leukocyte chemotaxis/trafficking (increased sCAMs, MCP-1) were strongly modulated in subjects treated with rIL-21. CONCLUSIONS Administration of rIL-21 resulted in activation of multiple cell types and immune response pathways. The changes observed in serum proteins were consistent with coincident processes of lymphoid and myeloid cell activation and trafficking, and acute phase response.
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Affiliation(s)
- Michael G. Dodds
- Preclinical Development, ZymoGenetics, 1201 Eastlake Ave. E, Seattle, WA 98102 USA
| | | | | | | | | | | | - Steven D. Hughes
- Preclinical Development, ZymoGenetics, 1201 Eastlake Ave. E, Seattle, WA 98102 USA
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Kang GJ, Lee HJ, Yoon WJ, Yang EJ, Park SS, Kang HK, Park MH, Yoo ES. Prunus Yedoensis Inhibits the Inflammatory Chemokines, MDC and TARC, by Regulating the STAT1-Signaling Pathway in IFN-γ-stimulated HaCaT Human Keratinocytes. Biomol Ther (Seoul) 2008. [DOI: 10.4062/biomolther.2008.16.4.394] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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30
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Regulation of haptoglobin expression in a human keratinocyte cell line HaCaT by inflammatory cytokines and dexamethasone. Chin Med J (Engl) 2008. [DOI: 10.1097/00029330-200804020-00014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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31
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Ardern-Jones MR, Black AP, Ogg GS. Anti-lymphocyte function associated antigen-1 inhibits T-helper 2 function of human allergen-specific CD4+ T cells. Br J Dermatol 2008; 158:456-62. [PMID: 18205875 DOI: 10.1111/j.1365-2133.2007.08393.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Blockade of lymphocyte function associated antigen-1 (LFA-1) is proving successful in the management of psoriasis and other inflammatory skin conditions including atopic dermatitis (AD), but the dependence of allergen-specific CD4+ T-cell function on LFA-1 has not been studied extensively. OBJECTIVES We sought to investigate the potential ability of LFA-1 inhibition to influence keratinocyte presentation of allergen to specific T-helper (Th) 2 cell clones. METHODS Using human leucocyte antigen class II tetrameric complexes, we generated Der p 1-specific DRB1*1501-restricted CD4+ T-cell lines (n=5) and clones (n=4) from the peripheral blood of five adults with AD. RESULTS Using doses of anti-LFA-1 present in vivo, we observed significant inhibition (P<0.05) of allergen-specific CD4+ T-cell production of interleukin-4 with such inhibition occurring during presentation of allergen by keratinocytes. CONCLUSIONS These data show that at doses present in vivo, LFA-1 blockade inhibits keratinocyte presentation to allergen-specific Th2 cells, suggesting one mechanism through which anti-LFA-1 may be beneficial therapeutically.
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Affiliation(s)
- M R Ardern-Jones
- MRC Human Immunology Unit, University of Oxford, Weatherall Institute of Molecular Medicine, Oxford, OX3 9DS, UK
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Abstract
Chemokines are a superfamily of small, secreted proteins that regulate cell traffic in homeostatic and inflammatory conditions. Keratinocytes synthesize many chemokines, including members of the CC and CXC subfamilies, such as regulated on activation of normal T-cell expressed and secreted, gamma-interferon inducible protein-10, monokine induced by gamma-interferon, and thymus- and activation-regulated chemokine. They also express some chemokine receptors that mediate the inflammatory or immune response by attracting various kinds of leukocytes.
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Affiliation(s)
- Yalçin Tüzün
- Department of Dermatology, Cerrahpasa Medical Faculty, Istanbul University, 34098 Istanbul, Turkey.
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Tokura Y, Kobayashi M, Kabashima K. Epidermal chemokines and modulation by antihistamines, antibiotics and antifungals. Exp Dermatol 2007; 17:81-90. [PMID: 18034836 DOI: 10.1111/j.1600-0625.2007.00657.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Growing evidence has demonstrated that chemokines released from epidermal cells control inflammatory skin diseases. Keratinocytes elaborate both Th1- and Th2-associated chemokines, although the former is more abundantly produced than the latter. Downmodulation of keratinocyte production of chemokines is one of the therapeutic approaches for cutaneous inflammatory disorders. Recent observations have shown that keratinocyte chemokine production can be modulated by well-used drugs, including antihistamines, antibiotics and antifungals. Utilization of the beneficial side effects of these drugs may by clinically valuable.
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Affiliation(s)
- Yoshiki Tokura
- Department of Dermatology, University of Occupational and Environmental Health, Kitakyushu, Japan.
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Bogiatzi SI, Fernandez I, Bichet JC, Marloie-Provost MA, Volpe E, Sastre X, Soumelis V. Cutting Edge: Proinflammatory and Th2 cytokines synergize to induce thymic stromal lymphopoietin production by human skin keratinocytes. THE JOURNAL OF IMMUNOLOGY 2007; 178:3373-7. [PMID: 17339431 DOI: 10.4049/jimmunol.178.6.3373] [Citation(s) in RCA: 204] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
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.
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Affiliation(s)
- Sofia I Bogiatzi
- Institut National de la Santé et de la Recherche Médicale U653 and Laboratoire d'Immunologie Clinique, Institut Curie, 26 rue d'Ulm, 75005 Paris, France
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Lee BS, Shim SM, Heo J, Pae HO, Seo BY, Han SY, Sohn DH, Jang SI, Chung HT. Wogonin suppresses TARC expression induced by mite antigen via heme oxygenase 1 in human keratinocytes. J Dermatol Sci 2007; 46:31-40. [PMID: 17317108 DOI: 10.1016/j.jdermsci.2007.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2006] [Revised: 12/31/2006] [Accepted: 01/04/2007] [Indexed: 10/23/2022]
Abstract
BACKGROUND Mite antigen, extract from Dermatophagoides farinae in house dust, is a well-known causative agent of atopy or allergic diseases, which involves many inflammatory cytokines/chemokines expression. Heme oxygenase 1 (HO1) has recently emerged as an important cytoprotective enzyme against oxidative stress and inflammatory responses in many cell types. OBJECTIVE The aim of this study was to investigate the possible mechanism by which wogonin, a natural product isolated from Scutellaria baicalensis, inhibited the mite antigen-induced chemokine expression in human keratinocytes, HaCaT cells. METHODS The level of chemokine expression was measured by reverse transcription-polymerase chain reaction (RT-PCR) and signaling study was performed by Western blot analysis. RESULTS The mite antigen-induced thymus- and activation-regulated chemokine (TARC/CCL17) expression in a dose-dependent manner via extracellular signal-regulated kinase (ERK) activation. However, it did not affect the expression of other chemokines including macrophage-derived chemokine (MDC/CCL22), RANTES, and IL-8. Interestingly, wogonin significantly suppressed the mite antigen-induced TARC expression via the induction of HO1. This suppression was completely restored by HO1 siRNA, suggesting a direct role of HO1 for the suppressive effect. Furthermore, exogenous CO, but not other end products of HO1 activity, also suppressed the mite antigen-induced TARC expression. CONCLUSION Wogonin induces HO1 expression, which in turn HO1 and/or CO suppresses TARC expression induced by mite antigen in human HaCaT cells.
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Affiliation(s)
- Bok-Soo Lee
- Medicinal Resources Research Institute, Department of Microbiology & Immunology, Wonkwang University School of Medicine, Iksan, Chonbuk 570-749, South Korea
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Ardern-Jones MR, Black AP, Bateman EA, Ogg GS. Bacterial superantigen facilitates epithelial presentation of allergen to T helper 2 cells. Proc Natl Acad Sci U S A 2007; 104:5557-62. [PMID: 17372219 PMCID: PMC1838460 DOI: 10.1073/pnas.0700733104] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Indexed: 12/31/2022] Open
Abstract
Although clinical and laboratory evidence support roles for both staphylococcal infection and environmental allergens in the pathogenesis of atopic dermatitis, human studies have largely considered these variables independently. We sought to test the hypothesis that staphylococcal superantigen influences the allergen-specific T cell response. We first mapped a Der p 1 epitope and used HLA DRB1*1501 class II tetramer-based cell sorted populations to show that specific CD4(+) T cells were able to recognize the peptide presented by HLA DR-matched keratinocytes. We observed that staphylococcal enterotoxin B (SEB) enhanced the IL-4 Der p 1-specific T cell response. This response was mediated by two synergistic mechanisms: first, SEB-induced IFN-gamma promoted class II and intercellular adhesion molecule-1 expression by presenting keratinocytes; and second, SEB-induced IL-4 directly amplified allergen-specific CD4(+) T cell production of many cytokines. We propose that handling of staphylococcal infection is a critical step in the amplification of the allergen-specific T cell response, linking two common disease associations and with implications for the prevention and treatment of atopic disease.
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Affiliation(s)
- Michael R. Ardern-Jones
- Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom; and
- Department of Dermatology, Churchill Hospital, Old Road, Oxford OX3 7LJ, United Kingdom
| | - Antony P. Black
- Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom; and
| | - Elizabeth A. Bateman
- Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom; and
| | - Graham S. Ogg
- Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom; and
- Department of Dermatology, Churchill Hospital, Old Road, Oxford OX3 7LJ, United Kingdom
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Kagami S, Saeki H, Komine M, Kakinuma T, Tsunemi Y, Nakamura K, Sasaki K, Asahina A, Tamaki K. Interleukin-4 and interleukin-13 enhance CCL26 production in a human keratinocyte cell line, HaCaT cells. Clin Exp Immunol 2005; 141:459-66. [PMID: 16045735 PMCID: PMC1809447 DOI: 10.1111/j.1365-2249.2005.02875.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Eotaxin-2/CCL24 and eotaxin-3/CCL26 are CC chemokines and their receptor, CC chemokine receptor 3 is preferentially expressed on eosinophils. It was reported that vascular endothelial cells and dermal fibroblasts produced CCL26. However, the regulation of CCL24 and CCL26 production in keratinocytes has not been well documented. We investigated the expression and production of CCL24 and CCL26 in the human keratinocyte cell line, HaCaT cells. Reverse transcription and polymerase chain reaction was performed using these cells and Enzyme-linked immunosorbent assay was carried out using supernatant of these cells. The production of CCL24 in HaCaT cells was slightly enhanced by IL-4 and that of CCL26 was strongly enhanced by IL-4 and IL-13. Furthermore, TNF-alpha generated a synergistic effect on IL-4 enhanced CCL26 production. Dexamethasone, IFN-gamma and the p38 mitogen-activated protein kinase inhibitor SB202190 inhibited IL-4 enhanced CCL26 production. IL-4 enhanced production of CCL26 was inhibited by leflunomide and JAK inhibitor 1, but not by JAK3 inhibitor, which indicates that it is mediated by JAK1-STAT6-dependent pathway. This result also strongly suggests the involvement of the type 2 IL-4 receptor in IL-4 enhanced production of CCL26. These results suggest that keratinocytes are involved in the migration of CC chemokine receptor 3 positive cells such as eosinophils in a Th2-dominant situation like atopic dermatitis.
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Affiliation(s)
- S Kagami
- Department of Dermatology, Faculty of Medicine, University of Tokyo, Tokyo, Japan.
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Raingeaud J, Pierre J. Interleukin-4 downregulates TNFalpha-induced IL-8 production in keratinocytes. FEBS Lett 2005; 579:3953-9. [PMID: 16004996 DOI: 10.1016/j.febslet.2005.06.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 05/25/2005] [Accepted: 06/09/2005] [Indexed: 11/28/2022]
Abstract
Interleukin (IL)-8 is a CXC chemokine induced by pro-inflammatory cytokines such as TNFalpha, IL-1beta and IL-6 in different cell types including keratinocytes. IL-4 regulation of TNFalpha-induced IL-8 expression is cell-type specific. In this study, we show that in the keratinocyte cell line HaCaT, IL-4 decreases TNFalpha-induced IL-8 mRNA expression. We then investigated the mechanism of IL-4 effect and showed that IL-4 downregulates TNFalpha-induced IL-8 promoter activity in luciferase reporter assays. Moreover, overexpression of either the endogenous JAK inhibitor SOCS-1 or a dominant negative form of the STAT6 transcription factor (STAT6DeltaC) interferes with the IL-4 inhibitory effect on IL-8 promoter. Finally we demonstrate, using a NF-kappaB-dependent promoter luciferase construct that IL-4 interferes, at least in part, with NF-kappaB transcriptional activity. Overall our results suggest that IL-4 regulates TNFalpha-induced IL-8 expression at a transcriptional level and this mechanism involves STAT6 and NF-kappaB transcription factors.
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Affiliation(s)
- Joel Raingeaud
- INSERM U461, Faculté de Pharmacie, 5 Rue JB Clément, 92296 Chatenay-Malabry, France.
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Hino R, Shimauchi T, Tokura Y. Treatment with IFN-γ increases serum levels of Th1 chemokines and decreases those of Th2 chemokines in patients with mycosis fungoides. J Dermatol Sci 2005; 38:189-95. [PMID: 15927812 DOI: 10.1016/j.jdermsci.2005.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2004] [Revised: 01/04/2005] [Accepted: 01/19/2005] [Indexed: 01/03/2023]
Abstract
BACKGROUND Interferon-gamma (IFN-gamma) is used for the treatment of mycosis fungoides, which is a Th2 neoplasm with elevation of serum Th2 chemokines. Although therapeutic effectiveness of IFN-gamma is caused at least partly by augmented activity of cytotoxic T cells against the tumor cells, its modulation on chemokine production remains unknown. OBJECTIVE Alterations in the serum levels of Th1 chemokines, IP-10 and MIG, and Th2 chemokines, TARC and MDC, were examined in mycosis fungoides patients treated with recombinant IFN-gamma. METHODS Four patients with mycosis fungoides received intravenous injections of IFN-gamma for 14 or 28 days. On day 0, 7, 14, and 28, sera were obtained from the patients, and the concentrations of TARC, MDC, IP-10, and MIG were measured by ELISA, along with the percentages of peripheral blood Th1 and Th2 cells. RESULTS Whereas the levels of TARC and MDC were decreased by IFN-gamma treatment, those of IP-10 and MIG were increased. In particular, the increment of MIG was remarkable. No substantial change of Th1 or Th2 cell number was observed. CONCLUSION In IFN-gamma treatment as well as other therapies, TARC may serve as a marker for the disease activity of mycosis fungoides. The dramatic elevation of MIG by IFN-gamma suggests the strong dependency of MIG production on IFN-gamma and the participation of MIG in skin-infiltration of tumoricidal cytotoxic T cells.
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Affiliation(s)
- Ryosuke Hino
- Department of Dermatology, University of Occupational and Environmental Health, Yahatanishi-ku, Kitakyushu, Japan
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Kobayashi M, Tokura Y. Preferential downmodulation of certain chemokines by fexofenadine in human keratinocytes. J Dermatol Sci 2005; 38:67-9. [PMID: 15795127 DOI: 10.1016/j.jdermsci.2005.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2004] [Revised: 01/13/2005] [Accepted: 01/21/2005] [Indexed: 11/29/2022]
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Fujita H, Asahina A, Sugaya M, Nakamura K, Gao P, Fujiwara H, Tamaki K. Differential Production of Th1- and Th2-Type Chemokines by Mouse Langerhans Cells and Splenic Dendritic Cells. J Invest Dermatol 2005; 124:343-50. [PMID: 15675953 DOI: 10.1111/j.0022-202x.2004.23607.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Some chemokines specifically attract T helper 1 (Th1) cells, whereas others attract T helper 2 (Th2) cells. In this study, we investigated the capacity of Langerhans cells (LC) to produce Th1- and Th2-type chemokines in comparison with that of splenic CD11c(+) dendritic cells (DC). We prepared highly purified (>95%) LC from BALB/c mouse skin using the panning method. With regard to Th1-type chemokines, exogenous stimulus, such as interferon-gamma (IFN-gamma), lipopolysaccharide, or polyinosinic-polycytidylic acid, was mandatory for the production of substantial amounts of CXCL10, CXCL9, and CXCL11 both in LC and splenic DC. LC, as a whole, exhibited low ability to produce Th1-type chemokines in comparison with splenic DC. As for Th2-type chemokines, LC, but not splenic DC, produced high levels of CCL22 and CCL17 constitutively during culture even without exogenous stimuli. The production of Th2-type chemokines was regulated in a complicated manner. In particular, interleukin-4 upregulated, and IFN-gamma downregulated both CCL22 and CCL17 production by LC. Of note, LC produced much more amounts of Th2-type chemokines than splenic DC under any conditions tested. Finally, Th1- and Th2-type chemokines produced by LC were shown to be functional using chemokine receptor-transfected-2B4 T cells. The high production of CC chemokine receptor 4 ligands by LC in the absence of IFN-gamma may be an important character discriminating LC from other DC.
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Affiliation(s)
- Hideki Fujita
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
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Fujita H, Asahina A, Gao P, Fujiwara H, Tamaki K. Expression and Regulation of RANTES/CCL5, MIP-1α/CCL3, and MIP-1β/CCL4 in Mouse Langerhans Cells. J Invest Dermatol 2004; 122:1331-3. [PMID: 15140240 DOI: 10.1111/j.0022-202x.2004.22534.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kobayashi M, Shimauchi T, Hino R, Tokura Y. Roxithromycin downmodulates Th2 chemokine production by keratinocytes and chemokine receptor expression on Th2 cells: its dual inhibitory effects on the ligands and the receptors. Cell Immunol 2004; 228:27-33. [PMID: 15203317 DOI: 10.1016/j.cellimm.2004.03.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2003] [Accepted: 03/31/2004] [Indexed: 11/22/2022]
Abstract
Roxithromycin (RXM), an anti-bacterial macrolide, has various immunomodulatory activities. To investigate the ability of RXM to downregulate skin-infiltration of T-lymphocytes, we examined the effects of RXM on keratinocyte production of chemokines and T cell expression of chemokine receptors. Normal human and HaCaT keratinocytes were cultured with RXM and stimulants. RXM at 1 or 10 microM significantly suppressed the production/expression of Th2 chemokines MDC and TARC in these keratinocytes, but the production of IP-10 was not affected. The effect of RXM on T-cell expression of the corresponding chemokine receptors was also tested in Th2-rich peripheral blood lymphocytes. The IL-2-enhanced expression level of Th2 chemokine receptor CCR4 was decreased by RXM at 10 microM, whereas the expression of CXCR3 was unchanged. Thus, RXM downmodulates both the production and receptor expression of Th2 but not Th1 chemokines involved in cutaneous immunity, suggesting its beneficial therapeutic effects on Th2-mediated or allergic skin disorders.
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Affiliation(s)
- Miwa Kobayashi
- Department of Dermatology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan.
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Xiao T, Fujita H, Saeki H, Mitsui H, Sugaya M, Tada Y, Kakinuma T, Torii H, Nakamura K, Asahina A, Tamaki K. Thymus and activation-regulated chemokine (TARC/CCL17) produced by mouse epidermal Langerhans cells is upregulated by TNF-alpha and IL-4 and downregulated by IFN-gamma. Cytokine 2003; 23:126-32. [PMID: 12967648 DOI: 10.1016/s1043-4666(03)00221-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Thymus and activation-regulated chemokine (TARC/CCL17) is a Th2-type chemokine and its receptor CC chemokine receptor 4 (CCR4) is preferentially expressed on Th2 cells. Langerhans cells (LC) are immature dendritic cells (DC) in the epidermis of the skin and play vital roles in immune response. In this study, we investigated TARC expression by murine freshly isolated LC and 48 h cultured (mature) LC, and the regulation of TARC production in cultured LC by various cytokines. Murine LC was prepared using a panning method from BALB/c mice. RT-PCR was performed using fresh and cultured LC to evaluate TARC mRNA levels. ELISA was carried out using supernatant of cultured LC to calculate secreted TARC protein levels. TARC mRNA was strongly upregulated during maturation of murine LC. TARC production by murine LC was upregulated by TNF-alpha and IL-4 and downregulated by IFN-gamma, dose-dependently. Th1 and Th2 cytokines reciprocally regulate the production of Th2-type chemokine TARC by murine LC. Th2 cytokine microenvironments in skin may increase TARC production by mature LC, providing attraction of Th2 cells in skin. This may be an amplification circuit in Th2-dominant inflammatory skin disease like atopic dermatitis.
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Affiliation(s)
- Ting Xiao
- Department of Dermatology, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan
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