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Vu QV, Vu NT, Baba K, Sasaki S, Tamura R, Morimoto K, Hirano H, Osada H, Kataoka T. Porphyrin derivatives inhibit tumor necrosis factor α-induced gene expression and reduce the expression and increase the cross-linked forms of cellular components of the nuclear factor κB signaling pathway. Eur J Pharmacol 2024; 977:176747. [PMID: 38880218 DOI: 10.1016/j.ejphar.2024.176747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 06/01/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
The transcription factor nuclear factor κB (NF-κB) is activated by proinflammatory cytokines, such as tumor necrosis factor α (TNF-α) and Toll-like receptor (TLR) ligands. Screening of NPDepo chemical libraries identified porphyrin derivatives as anti-inflammatory compounds that strongly inhibited the up-regulation of intercellular adhesion molecule-1 (ICAM-1) expression induced by TNF-α, interleukin-1α, the TLR3 ligand, and TLR4 ligand in human umbilical vein endothelial cells. In the present study, the mechanisms of action of porphyrin derivatives were further elucidated using human lung adenocarcinoma A549 cells. Porphyrin derivatives, i.e., dimethyl-2,7,12,18-tetramethyl-3,8-di(1-methoxyethyl)-21H,23H-porphine-13,17-dipropionate (1) and pheophorbide a (2), inhibited TNF-α-induced ICAM-1 expression and decreased the TNF-α-induced transcription of ICAM-1, vascular cell adhesion molecule-1, and E-selectin genes. 1 and 2 reduced the expression of the NF-κB subunit RelA protein for 1 h, which was not rescued by the inhibition of proteasome- and lysosome-dependent protein degradation. In addition, 1 and 2 decreased the expression of multiple components of the TNF receptor 1 complex, and this was accompanied by the appearance of their cross-linked forms. As common components of the NF-κB signaling pathway, 1 and 2 also cross-linked the α, β, and γ subunits of the inhibitor of NF-κB kinase complex and the NF-κB subunits RelA and p50. Cellular protein synthesis was prevented by 2, but not by 1. Therefore, the present results indicate that porphyrin derivative 1 reduced the expression and increased the cross-linked forms of cellular components required for the NF-κB signaling pathway without affecting global protein synthesis.
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Affiliation(s)
- Quy Van Vu
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Nhat Thi Vu
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kosuke Baba
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Saki Sasaki
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Ryuichi Tamura
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kyoko Morimoto
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiroyuki Hirano
- Chemical Resource Development Research Unit, RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan
| | - Hiroyuki Osada
- Chemical Resource Development Research Unit, RIKEN Center for Sustainable Resource Science, Wako, Saitama, 351-0198, Japan; Department of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, 422-8526, Japan
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan; Biomedical Research Center, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
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Vu QV, Sayama S, Ando M, Kataoka T. Sesquiterpene Lactones Containing an α-Methylene-γ-Lactone Moiety Selectively Down-Regulate the Expression of Tumor Necrosis Factor Receptor 1 by Promoting Its Ectodomain Shedding in Human Lung Adenocarcinoma A549 Cells. Molecules 2024; 29:1866. [PMID: 38675685 PMCID: PMC11053566 DOI: 10.3390/molecules29081866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Alantolactone is a eudesmane-type sesquiterpene lactone containing an α-methylene-γ-lactone moiety. Previous studies showed that alantolactone inhibits the nuclear factor κB (NF-κB) signaling pathway by targeting the inhibitor of NF-κB (IκB) kinase. However, in the present study, we demonstrated that alantolactone selectively down-regulated the expression of tumor necrosis factor (TNF) receptor 1 (TNF-R1) in human lung adenocarcinoma A549 cells. Alantolactone did not affect the expression of three adaptor proteins recruited to TNF-R1. The down-regulation of TNF-R1 expression by alantolactone was suppressed by an inhibitor of TNF-α-converting enzyme. Alantolactone increased the soluble forms of TNF-R1 that were released into the culture medium as an ectodomain. The structure-activity relationship of eight eudesmane derivatives revealed that an α-methylene-γ-lactone moiety was needed to promote TNF-R1 ectodomain shedding. In addition, parthenolide and costunolide, two sesquiterpene lactones with an α-methylene-γ-lactone moiety, increased the amount of soluble TNF-R1. Therefore, the present results demonstrate that sesquiterpene lactones with an α-methylene-γ-lactone moiety can down-regulate the expression of TNF-R1 by promoting its ectodomain shedding in A549 cells.
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Affiliation(s)
- Quy Van Vu
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shinsei Sayama
- Department of Natural Sciences (Chemistry), Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1295, Japan;
| | - Masayoshi Ando
- Department of Chemistry and Chemical Engineering, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata 950-2181, Japan
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Biomedical Research Center, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Cucurbitacin B Down-Regulates TNF Receptor 1 Expression and Inhibits the TNF-α-Dependent Nuclear Factor κB Signaling Pathway in Human Lung Adenocarcinoma A549 Cells. Int J Mol Sci 2022; 23:ijms23137130. [PMID: 35806134 PMCID: PMC9267118 DOI: 10.3390/ijms23137130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 12/30/2022] Open
Abstract
Pro-inflammatory cytokines, such as tumor necrosis factor-α (TNF-α), induce the expression of intracellular adhesion molecule-1 (ICAM-1) by activating the nuclear factor κB (NF-κB) signaling pathway. In the present study, we found that cucurbitacin B decreased the expression of ICAM-1 in human lung adenocarcinoma A549 cells stimulated with TNF-α or interleukin-1α. We further investigated the mechanisms by which cucurbitacin B down-regulates TNF-α-induced ICAM-1 expression. Cucurbitacin B inhibited the nuclear translocation of the NF-κB subunit RelA and the phosphorylation of IκBα in A549 cells stimulated with TNF-α. Cucurbitacin B selectively down-regulated the expression of TNF receptor 1 (TNF-R1) without affecting three adaptor proteins (i.e., TRADD, RIPK1, and TRAF2). The TNF-α-converting enzyme inhibitor suppressed the down-regulation of TNF-R1 expression by cucurbitacin B. Glutathione, N-acetyl-L-cysteine, and, to a lesser extent, L-cysteine attenuated the inhibitory effects of cucurbitacin B on the TNF-α-induced expression of ICAM-1, suggesting that an α,β-unsaturated carbonyl moiety is essential for anti-inflammatory activity. The present results revealed that cucurbitacin B down-regulated the expression of TNF-R1 at the initial step in the TNF-α-dependent NF-κB signaling pathway.
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Wang XW, Tian RM, Yang YQ, Wang K, Li EN, Han XD, Bao K, Mao W, Xu HT, Liu B, Xu P. Tripterygium glycoside fraction n2 ameliorates adriamycin-induced nephrotic syndrome in rats by suppressing apoptosis. JOURNAL OF ETHNOPHARMACOLOGY 2020; 257:112789. [PMID: 32234597 DOI: 10.1016/j.jep.2020.112789] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/09/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tripterygium wilfordii Hook F. (TwHF), a traditional Chinese herb medicine, has been widely used for clinical treatment of various rheumatic immune diseases. Tripterygium glycosides (TG) extracted from TwHF has been verified to process multiple bioactivities, including immunosuppressive, anti-inflammatory and anti-cancer effects. However, the clinical application of TG is limited due to its severe toxicity and narrow therapeutic window. For the clinical safety of TG usage, attenuation of toxicity is the key issue to be solved. PURPOSE Tripterygium glycoside fraction n2 (TG-n2) is a detoxified mixture obtained from TG using a new preparation method. In our previous study, we have demonstrated that TG-n2 has a lower toxicity than TG. The aim of the present study was to screen the renal protective effect of TG-n2 in nephrotic syndrome (NS) induced by adriamycin (ADR) in rats and its effect on apoptosis, as well as the effective difference between TG-n2 and TG. MATERIALS AND METHODS The ADR-induced NS rat model was established. Rats were intravenously injected with ADR (6 mg/kg), then treated with either TG-n2 (10 mg/kg/day) or TG (10 mg/kg/day) by oral gavage for 4 weeks. Clinical indexes in each group were determined. HE staining and electron microscopic analysis were used to evaluate renal histopathological damage. Caspase-3 activity reagent and TUNEL staining were used to estimate renal apoptosis. Protein levels of caspase-3, caspase-9, caspase-8, caspase-12, Bax, Bcl-2, p53, TNF-R1, FLIP and podocin were measured by Western Blot. RESULTS TG-n2 and TG intervention ameliorated renal function as assessed by the levels of 24-h proteinuria, Cr, BUN, TC, TG, ALB and LDL-c. TG-n2 and TG alleviated the decrease of podocin protein expression and morphological injury of podocyte as screened by Western Blot and electron microscopic analysis. Besides, renal tubular injury was reduced as inspected by light microscopic analysis. TG-n2 and TG could significantly inhibit the apoptosis and activity of caspase-3 in kidney tissues as examined by fluorescence microscopic analysis and reagent. After intervention of TG-n2 and TG, protein levels of cleaved caspase-3, cleaved caspase-8, cleaved caspase-9, Bax, p53 and TNF-R1 in renal issues were significantly decreased compared with ADR group. In contrast, protein level of Bcl-2 was elevated remarkedly. CONCLUSIONS Our data suggested that attenuated TG-n2 may have a similar protective effect with TG in ADR-induced NS in rats by inhibiting activation of apoptosis.
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Affiliation(s)
- Xiao-Wan Wang
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Rui-Min Tian
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yi-Qi Yang
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Kai Wang
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - En-Nian Li
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiao-Dong Han
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Kun Bao
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Wei Mao
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Hong-Tao Xu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai, 201210, China.
| | - Bo Liu
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine, Guangzhou, 510006, China.
| | - Peng Xu
- The Second Clinical Medical College, Guangdong Provincial Key Laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Yang XQ, Jing XY, Zhang CX, Song YF, Liu D. Isolation and characterization of porcine PILRB gene and its alternative splicing variants. Gene 2018; 672:8-15. [PMID: 29879501 DOI: 10.1016/j.gene.2018.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 06/01/2018] [Accepted: 06/04/2018] [Indexed: 01/15/2023]
Abstract
Paired immunoglobulin-like type 2 receptor (PILR)β regulates inflammatory responses to pathogen infection, and therefore plays an important role in host disease resistance/susceptibility. However porcine PILRβ remains poorly characterized. In this study, we obtained the cDNA (V1) of its encoding gene, PILRB, and three alternative splicing (AS) variants (V2-4). The complete coding sequence of V1 was 621 bp long encoding a polypeptide of 206 aa. Compared with V1, V2 and V3 were formed by exon-skipping in the 3'-untranslated region (UTR), while V4 was formed by alternative 3' splice site of exon 3, resulting in a premature termination codon, combined with exon skipping in the 3'-UTR. Expression profile analysis showed that all the isoforms were most abundant in the spleen, and V1 was strongly induced by poly(I:C). Furthermore, the transcription of V1 altered with the increasing age and differed between species. Exon skipping in the 3'-UTR of V2 and V3 down-regulated expression of the luciferase reporter gene, and hence presumably of the PILRB gene, while V4 was subjected to nonsense-mediated mRNA decay. Additionally, five novel splicing patterns were detected using the minigene approach, indicating complex AS of porcine PILRB. These results will help to reveal the role of PILRβ in the host immune response using pig models, and will facilitate the breeding of pigs resistant to viral diseases through molecular breeding methods.
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Affiliation(s)
- Xiu-Qin Yang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
| | - Xiao-Yan Jing
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China
| | - Cai-Xia Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China
| | - Yan-Fang Song
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China
| | - Di Liu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, PR China.
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Harada M, Morimoto K, Kondo T, Hiramatsu R, Okina Y, Muko R, Matsuda I, Kataoka T. Quinacrine Inhibits ICAM-1 Transcription by Blocking DNA Binding of the NF-κB Subunit p65 and Sensitizes Human Lung Adenocarcinoma A549 Cells to TNF-α and the Fas Ligand. Int J Mol Sci 2017; 18:ijms18122603. [PMID: 29207489 PMCID: PMC5751206 DOI: 10.3390/ijms18122603] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 12/16/2022] Open
Abstract
Quinacrine has been used for therapeutic drugs in some clinical settings. In the present study, we demonstrated that quinacrine decreased the expression of intercellular adhesion molecule-1 (ICAM-1) induced by tumor necrosis factor (TNF)-α and interleukin-1 (IL-1) α in human lung adenocarcinoma A549 cells. Quinacrine inhibited ICAM-1 mRNA expression and nuclear factor κB (NF-κB)-responsive luciferase reporter activity following a treatment with TNF-α and IL-1α. In the NF-κB signaling pathway, quinacrine did not markedly affect the TNF-α-induced degradation of the inhibitor of NF-κB or the TNF-α-induced phosphorylation of the NF-κB subunit, p65, at Ser-536 and its subsequent translocation to the nucleus. In contrast, a chromatin immunoprecipitation assay showed that quinacrine prevented the binding of p65 to the ICAM-1 promoter following TNF-α stimulation. Moreover, TNF-α and the Fas ligand effectively reduced the viability of A549 cells in the presence of quinacrine only. Quinacrine down-regulated the constitutive and TNF-α-induced expression of c-FLIP and Mcl-1 in A549 cells. These results revealed that quinacrine inhibits ICAM-1 transcription by blocking the DNA binding of p65 and sensitizes A549 cells to TNF-α and the Fas ligand.
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Affiliation(s)
- Misuzu Harada
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kyoko Morimoto
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Tetsuya Kondo
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Reiko Hiramatsu
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Yuji Okina
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Ryo Muko
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Iyo Matsuda
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
- The Center for Advanced Insect Research Promotion (CAIRP), Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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Hirano S, Quach HT, Watanabe T, Kanoh N, Iwabuchi Y, Usui T, Kataoka T. Irciniastatin A, a pederin-type translation inhibitor, promotes ectodomain shedding of cell-surface tumor necrosis factor receptor 1. J Antibiot (Tokyo) 2015; 68:417-20. [DOI: 10.1038/ja.2015.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 12/18/2014] [Accepted: 12/24/2014] [Indexed: 11/09/2022]
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Quach HT, Hirano S, Fukuhara S, Watanabe T, Kanoh N, Iwabuchi Y, Usui T, Kataoka T. Irciniastatin A Induces Potent and Sustained Activation of Extracellular Signal-Regulated Kinase and Thereby Promotes Ectodomain Shedding of Tumor Necrosis Factor Receptor 1 in Human Lung Carcinoma A549 Cells. Biol Pharm Bull 2015; 38:941-6. [DOI: 10.1248/bpb.b15-00078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hue Tu Quach
- Department of Applied Biology, Kyoto Institute of Technology
| | - Seiya Hirano
- Department of Applied Biology, Kyoto Institute of Technology
| | - Sayuri Fukuhara
- Department of Applied Biology, Kyoto Institute of Technology
| | - Tsubasa Watanabe
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Naoki Kanoh
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Yoshiharu Iwabuchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Takeo Usui
- Faculty of Life and Environmental Sciences, University of Tsukuba
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology
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Allantopyrone A, an α-pyrone metabolite from an endophytic fungus, inhibits the tumor necrosis factor α-induced nuclear factor κB signaling pathway. J Antibiot (Tokyo) 2014; 68:71-5. [PMID: 25118107 DOI: 10.1038/ja.2014.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 06/13/2014] [Accepted: 07/05/2014] [Indexed: 12/17/2022]
Abstract
Tumor necrosis factor α (TNF-α) induces the activation of transcription factor nuclear factor κB (NF-κB), which upregulates a variety of genes, including the gene encoding intercellular adhesion molecule-1 (ICAM-1). Allantopyrone A, a recently identified α-pyrone metabolite from an endophytic fungus, was found to inhibit the TNF-α-induced expression of ICAM-1 in human lung carcinoma A549 cells. Allantopyrone A also inhibited the TNF-α-induced luciferase expression of an NF-κB-responsive reporter. In the NF-κB signaling pathway, allantopyrone A inhibited the nuclear translocation of NF-κB subunits as well as the phosphorylation and subsequent degradation of the inhibitor of NF-κB (IκB) α proteins. By contrast, allantopyrone A did not directly affect the catalytic activity of active IκB kinase β. These findings indicate that allantopyrone A inhibits the NF-κB signaling pathway at a step upstream of IκBα phosphorylation.
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10
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García-Sánchez O, López-Novoa JM, López-Hernández FJ. Interferon-γ Reduces the Proliferation of Primed Human Renal Tubular Cells. NEPHRON EXTRA 2014; 4:1-7. [PMID: 24575118 PMCID: PMC3934603 DOI: 10.1159/000353587] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND/AIMS Chronic kidney disease (CKD) is a progressive deterioration of the kidney function, which may eventually lead to renal failure and the need for dialysis or kidney transplant. Whether initiated in the glomeruli or the tubuli, CKD is characterized by progressive nephron loss, for which the process of tubular deletion is of key importance. Tubular deletion results from tubular epithelial cell death and defective repair, leading to scarring of the renal parenchyma. Several cytokines and signaling pathways, including transforming growth factor-β (TGF-β) and the Fas pathway, have been shown to participate in vivo in tubular cell death. However, there is some controversy about their mode of action, since a direct effect on normal tubular cells has not been demonstrated. We hypothesized that epithelial cells would require specific priming to become sensitive to TGF-β or Fas stimulation and that this priming would be brought about by specific mediators found in the pathological scenario. METHODS Herein we studied whether the combined effect of several stimuli known to take part in CKD progression, namely TGF-β, tumor necrosis factor-α, interferon-γ (IFN-γ), and Fas stimulation, on primed resistant human tubular cells caused cell death or reduced proliferation. RESULTS We demonstrate that these cytokines have no synergistic effect on the proliferation or viability of human kidney (HK2) cells. We also demonstrate that IFN-γ, but not the other stimuli, reduces the proliferation of cycloheximide-primed HK2 cells without affecting their viability. CONCLUSION Our results point at a potentially important role of IFN-γ in defective repair, leading to nephron loss during CKD.
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Affiliation(s)
- Omar García-Sánchez
- Unidad de Fisiopatología Renal y Cardiovascular, Departamento de Fisiología y Farmacología, Universidad de Salamanca, Madrid, Spain ; Fundación Renal Íñigo Álvarez de Toledo, Madrid, Spain
| | - José Miguel López-Novoa
- Unidad de Fisiopatología Renal y Cardiovascular, Departamento de Fisiología y Farmacología, Universidad de Salamanca, Madrid, Spain ; Instituto de Investigación Biomédica de Salamanca (IBSAL), Madrid, Spain ; Fundación Renal Íñigo Álvarez de Toledo, Madrid, Spain
| | - Francisco J López-Hernández
- Unidad de Fisiopatología Renal y Cardiovascular, Departamento de Fisiología y Farmacología, Universidad de Salamanca, Madrid, Spain ; Instituto de Investigación Biomédica de Salamanca (IBSAL), Madrid, Spain ; Unidad de Investigación, Instituto de Estudios de Ciencias de la Salud (IECSCYL)-Hospital Universitario de Salamanca, Salamanca, Madrid, Spain ; Fundación Renal Íñigo Álvarez de Toledo, Madrid, Spain
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11
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Kastamoulas M, Chondrogiannis G, Kanavaros P, Vartholomatos G, Bai M, Briasoulis E, Arvanitis D, Galani V. Cytokine effects on cell survival and death of A549 lung carcinoma cells. Cytokine 2013; 61:816-25. [DOI: 10.1016/j.cyto.2013.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Revised: 11/04/2012] [Accepted: 01/19/2013] [Indexed: 12/13/2022]
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12
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Hirano S, Kataoka T. Deoxynivalenol induces ectodomain shedding of TNF receptor 1 and thereby inhibits the TNF-α-induced NF-κB signaling pathway. Eur J Pharmacol 2013; 701:144-51. [PMID: 23357557 DOI: 10.1016/j.ejphar.2013.01.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 11/27/2012] [Accepted: 01/09/2013] [Indexed: 12/27/2022]
Abstract
Trichothecene mycotoxins are known to inhibit eukaryotic translation and to trigger the ribotoxic stress response, which regulates gene expression via the activation of the mitogen-activated protein (MAP) kinase superfamily. In this study, we found that deoxynivalenol induced the ectodomain shedding of tumor necrosis factor (TNF) receptor 1 (TNFRSF1A) and thereby inhibited the TNF-α-induced signaling pathway. In human lung carcinoma A549 cells, deoxynivalenol and 3-acetyldeoxynivalenol inhibited the expression of intercellular adhesion molecule-1 (ICAM-1) induced by TNF-α more strongly than that induced by interleukin 1α (IL-1α), whereas T-2 toxin and verrucarin A exerted nonselective inhibitory effects. Deoxynivalenol and 3-acetyldeoxynivalenol also inhibited the nuclear factor κB (NF-κB) signaling pathway induced by TNF-α, but not that induced by IL-1α. Consistent with these findings, deoxynivalenol and 3-acetyldeoxynivalenol induced the ectodomain shedding of TNF receptor 1 by TNF-α-converting enzyme (TACE), also known as a disintegrin and metalloproteinase 17 (ADAM17). In addition to the TACE inhibitor TAPI-2, the MAP kinase or extracellular signal-regulated kinase (ERK) kinase (MEK) inhibitor U0126 and the p38 MAP kinase inhibitor SB203580, but not the c-Jun N-terminal kinase (JNK) inhibitor SP600125, suppressed the ectodomain shedding of TNF receptor 1 induced by deoxynivalenol and reversed its selective inhibition of TNF-α-induced ICAM-1 expression. Our results demonstrate that deoxynivalenol induces the TACE-dependent ectodomain shedding of TNF receptor 1 via the activation of ERK and p38 MAP kinase, and thereby inhibits the TNF-α-induced NF-κB signaling pathway.
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Affiliation(s)
- Seiya Hirano
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, Japan
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13
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Piantadosi CA, Suliman HB. Redox regulation of mitochondrial biogenesis. Free Radic Biol Med 2012; 53:2043-53. [PMID: 23000245 PMCID: PMC3604744 DOI: 10.1016/j.freeradbiomed.2012.09.014] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 09/07/2012] [Accepted: 09/11/2012] [Indexed: 12/21/2022]
Abstract
The cell renews, adapts, or expands its mitochondrial population during episodes of cell damage or periods of intensified energy demand by the induction of mitochondrial biogenesis. This bigenomic program is modulated by redox-sensitive signals that respond to physiological nitric oxide (NO), carbon monoxide (CO), and mitochondrial reactive oxygen species production. This review summarizes our current ideas about the pathways involved in the activation of mitochondrial biogenesis by the physiological gases leading to changes in the redox milieu of the cell, with an emphasis on the responses to oxidative stress and inflammation. The cell's energy supply is protected from conditions that damage mitochondria by an inducible transcriptional program of mitochondrial biogenesis that operates in large part through redox signals involving the nitric oxide synthase and the heme oxygenase-1/CO systems. These redox events stimulate the coordinated activities of several multifunctional transcription factors and coactivators also involved in the elimination of defective mitochondria and the expression of counterinflammatory and antioxidant genes, such as IL10 and SOD2, as part of a unified damage-control network. The redox-regulated mechanisms of mitochondrial biogenesis schematically outlined in the graphical abstract link mitochondrial quality control to an enhanced capacity to support the cell's metabolic needs while improving its resistance to metabolic failure and avoidance of cell death during periods of oxidative stress.
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Affiliation(s)
- Claude A Piantadosi
- Department of Medicine, Duke University Medical Center and the Durham VA Medical Center, Durham, NC 27710, USA.
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Piantadosi CA, Suliman HB. Transcriptional control of mitochondrial biogenesis and its interface with inflammatory processes. Biochim Biophys Acta Gen Subj 2012; 1820:532-41. [PMID: 22265687 DOI: 10.1016/j.bbagen.2012.01.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 12/23/2011] [Accepted: 01/07/2012] [Indexed: 12/28/2022]
Abstract
BACKGROUND Cells avoid major mitochondrial damage and energy failure during systemic inflammatory states, such as severe acute infections, by specific targeting of the inflammatory response and by inducing anti-inflammatory and anti-oxidant defenses. Recent evidence indicates that these cell defenses also include mitochondrial biogenesis and the clearance of damaged mitochondria through autophagy. SCOPE OF REVIEW This review addresses a group of transcriptional signaling mechanisms that engage mitochondrial biogenesis, including energy-sensing and redox-regulated transcription factors and co-activators, after major inflammatory events. MAJOR CONCLUSIONS Stimulation of the innate immune system by activation of toll-like receptors (TLR) generates pro-inflammatory mediators, such as tumor necrosis factor-α (TNF-α)and interleukin-1β (IL-1β), necessary for optimal host defense, but which also contribute to mitochondrial damage through oxidative stress and other mechanisms. To protect its energy supply, host cells sense mitochondrial damage and initiate mitochondrial biogenesis under the control of an inducible transcriptional program that also activates anti-oxidant and anti-inflammatory gene expression. This multifunctional network not only increases cellular resistance to metabolic failure, oxidative stress, and cell death, but promotes immune tolerance as shown in the graphical abstract. GENERAL SIGNIFICANCE The post-inflammatory induction of mitochondrial biogenesis supports metabolic function and cell viability while helping to control inflammation. In clinical settings, patients recovering from severe systemic infections may develop transient immune suppression, placing them at risk for recurrent infection, but there may be therapeutic opportunities to enhance mitochondrial quality control that would improve the resolution of life-threatening host responses to such infections.
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Affiliation(s)
- Claude A Piantadosi
- Department of Medicine, Duke University Medical Center, and Durham VA Medical Center, Durham, NC 27710, USA.
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Kataoka T. Translation inhibitors and their unique biological properties. Eur J Pharmacol 2011; 676:1-5. [PMID: 22173124 DOI: 10.1016/j.ejphar.2011.11.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 11/28/2011] [Indexed: 12/22/2022]
Abstract
In eukaryotes, many translation inhibitors have been widely used as bioprobes to evaluate the contribution of translation to signaling pathways and cellular functions. Several types of translation inhibitors are also known to trigger the activation of the mitogen-activated protein kinase superfamily in an intracellular mechanism called ribotoxic stress response. This perspective focuses on the biological properties of recently identified translation inhibitors that trigger ribotoxic stress response, particularly glutarimides as well as triene-ansamycins.
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Affiliation(s)
- Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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Anti-inflammatory effects of Clematis chinensis Osbeck extract(AR-6) may be associated with NF-κB, TNF-α, and COX-2 in collagen-induced arthritis in rat. Rheumatol Int 2011; 32:3119-25. [PMID: 21932136 DOI: 10.1007/s00296-011-2083-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 08/21/2011] [Indexed: 10/17/2022]
Abstract
The root of Clematis chinensis Osbeck has been used widely in rheumatoid arthritis in Chinese traditional medicine, and AR-6 is a triterpene saponin isolated from it. In this present study, we investigated the in vivo effects of oral AR-6 in chronic rat with collagen-induced arthritis (CIA) and possible molecular mechanism. CIA was induced by immunizing 56 female Sprague-Dawley (SD) rats with chicken typeIIcollagen (CII). Following eighteen days, the immunization rats with CIA were treated with AR-6 (32, 16, 8 mg/kg), cyclophosphamide (7 mg/kg), and TGP (Total Glucosides of Paeonia) (180 mg/kg) for 7 days, and rats without CIA were given the same volume of purified water. TNF-α and IL-1β levels in peripheral blood will be measured by ELISA, and Western blot analysis will be used to detect the expression of NF-κB p65 subunits, TNF-α and COX-2, in synovial membrane. We found that therapeutic treatment with AR-6 markedly improves the paw swelling and histopathological changes. Moreover, the serum levels of pro-inflammatory cytokines TNF-α and IL-1β were markedly lowered, and the expression of NF-κB p65 subunits, TNF-α and COX-2, in the synovial membrane of CIA rats was significantly inhibited in the AR-6-treated groups. These results enable to prove that AR-6 has a potential anti-inflammatory effect in CIA rats, and its mechanism may relate to the inhibition of the expression of NF-κB p65 subunits, TNF-α and COX-2.
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Cytotrienin A, a translation inhibitor that induces ectodomain shedding of TNF receptor 1 via activation of ERK and p38 MAP kinase. Eur J Pharmacol 2011; 667:113-9. [PMID: 21663740 DOI: 10.1016/j.ejphar.2011.05.072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 05/02/2011] [Accepted: 05/22/2011] [Indexed: 12/31/2022]
Abstract
Cytotrienin A, a member of the triene-ansamycin family, was initially identified to be an inducer of apoptosis and recently shown to be an inhibitor of translation that interferes with eukaryotic elongation factor 1A function. In human lung carcinoma A549 cells, cytotrienin A was found to inhibit more strongly the cell-surface expression of intercellular adhesion molecule-1 (ICAM-1) induced by tumor necrosis factor (TNF)-α than the expression induced by interleukin (IL)-1α. Cytotrienin A induced the ectodomain shedding of TNF receptor 1 by TNF-α-converting enzyme (TACE). The TACE inhibitor TAPI-2 antagonized the selective inhibitory effect of cytotrienin A on inhibitor of nuclear factor-κB-α (IκBα) degradation as well as ICAM-1 expression in TNF-α-stimulated cells. The MEK inhibitor U0126 and the p38 MAP kinase inhibitor SB203580, but not the JNK inhibitor SP600125, prevented the ectodomain shedding of TNF receptor 1 induced by cytotrienin A and reversed the inhibitory effects of cytotrienin A on the TNF-α-induced IκBα degradation. In the presence of both U0126 and SB203580, cytotrienin A inhibited TNF-α- and IL-1α-induced ICAM-1 expression at almost equivalent concentrations. Thus, our present results demonstrate that cytotrienin A is a translation inhibitor that triggers ribotoxic stress response and selectively inhibits the TNF-α-induced ICAM-1 expression by inducing the ectodomain shedding of TNF receptor 1 via the activation of ERK and p38 MAP kinase.
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Yamada Y, Tashiro E, Taketani S, Imoto M, Kataoka T. Mycotrienin II, a translation inhibitor that prevents ICAM-1 expression induced by pro-inflammatory cytokines. J Antibiot (Tokyo) 2011; 64:361-6. [DOI: 10.1038/ja.2011.23] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Wang P, Yu P, Gao P, Shi T, Ma D. Discovery of novel human transcript variants by analysis of intronic single-block EST with polyadenylation site. BMC Genomics 2009; 10:518. [PMID: 19906316 PMCID: PMC2784480 DOI: 10.1186/1471-2164-10-518] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Accepted: 11/12/2009] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Alternative polyadenylation sites within a gene can lead to alternative transcript variants. Although bioinformatic analysis has been conducted to detect polyadenylation sites using nucleic acid sequences (EST/mRNA) in the public databases, one special type, single-block EST is much less emphasized. This bias leaves a large space to discover novel transcript variants. RESULTS In the present study, we identified novel transcript variants in the human genome by detecting intronic polyadenylation sites. Poly(A/T)-tailed ESTs were obtained from single-block ESTs and clustered into 10,844 groups standing for 5,670 genes. Most sites were not found in other alternative splicing databases. To verify that these sites are from expressed transcripts, we analyzed the supporting EST number of each site, blasted representative ESTs against known mRNA sequences, traced terminal sequences from cDNA clones, and compared with the data of Affymetrix tiling array. These analyses confirmed about 84% (9,118/10,844) of the novel alternative transcripts, especially, 33% (3,575/10,844) of the transcripts from 2,704 genes were taken as high-reliability. Additionally, RT-PCR confirmed 38% (10/26) of predicted novel transcript variants. CONCLUSION Our results provide evidence for novel transcript variants with intronic poly(A) sites. The expression of these novel variants was confirmed with computational and experimental tools. Our data provide a genome-wide resource for identification of novel human transcript variants with intronic polyadenylation sites, and offer a new view into the mystery of the human transcriptome.
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Affiliation(s)
- Pingzhang Wang
- Chinese National Human Genome Center, #3-707 North YongChang Road BDA, Beijing, PR China.
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Tsutsui C, Yamada Y, Ando M, Toyama D, Wu JL, Wang L, Taketani S, Kataoka T. Peperomins as anti-inflammatory agents that inhibit the NF-κB signaling pathway. Bioorg Med Chem Lett 2009; 19:4084-7. [DOI: 10.1016/j.bmcl.2009.06.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 06/02/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
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Takada Y, Matsuo K, Ogura H, Bai L, Toki A, Wang L, Ando M, Kataoka T. Odoroside A and ouabain inhibit Na+/K+-ATPase and prevent NF-kappaB-inducible protein expression by blocking Na+-dependent amino acid transport. Biochem Pharmacol 2009; 78:1157-66. [PMID: 19559678 DOI: 10.1016/j.bcp.2009.06.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 06/13/2009] [Accepted: 06/16/2009] [Indexed: 11/30/2022]
Abstract
Inflammatory cytokines, such as tumor necrosis factor (TNF)-alpha and interleukin-1 (IL-1), trigger the activation of transcription factor NF-kappaB that induces the expression of a variety of genes, including intercellular adhesion molecule (ICAM)-1. Odoroside A [3beta-O-(beta-D-diginosyl)-14-hydroxy-5beta,14beta-card-20(22)-enolide] was found to inhibit the cell-surface expression of ICAM-1 induced by TNF-alpha and IL-1 at comparable concentrations in human lung carcinoma A549 cells. In this study, the molecular mechanism underlying the inhibition of TNF-alpha-induced cell-surface ICAM-1 expression by odoroside A together with the specific Na(+)/K(+)-ATPase inhibitor ouabain was further investigated. Odoroside A and ouabain neither prevented IkappaBalpha degradation nor NF-kappaB translocation to the nucleus upon TNF-alpha stimulation. While odoroside A and ouabain had no inhibitory effect on the induction of ICAM-1 mRNA, they inhibited the TNF-alpha-induced ICAM-1 expression at the protein level. Consistent with these results, odoroside A and ouabain potently reduced de novo protein synthesis, largely due to its ability to block Na(+)-dependent transport of amino acids across the plasma membrane, but not to interfering with the translation machinery. As a direct molecular target, odoroside A was found to inhibit the ATP-hydrolyzing activity of Na(+)/K(+)-ATPase as potently as ouabain. These results clearly demonstrate that odoroside A and ouabain prevent NF-kappaB-inducible protein expression by blocking the Na(+)-dependent amino acid transport.
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Affiliation(s)
- Yohei Takada
- Center for Biological Resources and Informatics, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Japan
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Abstract
Autoinflammatory diseases (AIDs) are illnesses caused by primary dysfunction of the innate immune system. Proteins that are mutated in AIDs mediate the regulation of NFkappaB activation, cell apoptosis, and IL-1beta secretion through cross-regulated and sometimes common signaling pathways. AIDs include a broad number of monogenic [e.g., familial Mediterranean fever (FMF), cryopyrin-associated periodic syndrome (CAPS), mevalonate kinase deficiency (MKD), tumor necrosis factor (TNF)-receptor-associated periodic syndrome (TRAPS)] and multifactorial (e.g., Behçet's syndrome) disorders. These conditions are characterized by recurrent attacks of fever, abdominal pain, arthritis, and cutaneous signs; these symptoms sometimes overlap, obscuring diagnosis. Distinguishing signs and the use of specific functional tests where available (e.g., in MKD) are helpful. However, some patients remain hard to manage despite the advent of new genetic tests and/or due to lack of effective treatment.
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Affiliation(s)
- Isabelle Touitou
- CHU Montpellier, Unité médicale des maladies autoinflammatoires, Hôpital A de Villeneuve, Montpellier, France.
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Kadohara K, Nagumo M, Asami S, Tsukumo Y, Sugimoto H, Igarashi M, Nagai K, Kataoka T. Caspase-8 Mediates Mitochondrial Release of Pro-apoptotic Proteins in a Manner Independent of Its Proteolytic Activity in Apoptosis Induced by the Protein Synthesis Inhibitor Acetoxycycloheximide in Human Leukemia Jurkat Cells. J Biol Chem 2009; 284:5478-87. [DOI: 10.1074/jbc.m808523200] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Ogura H, Tsukumo Y, Sugimoto H, Igarashi M, Nagai K, Kataoka T. ERK and p38 MAP kinase are involved in downregulation of cell surface TNF receptor 1 induced by acetoxycycloheximide. Int Immunopharmacol 2008; 8:922-6. [DOI: 10.1016/j.intimp.2008.02.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 02/23/2008] [Accepted: 02/25/2008] [Indexed: 10/22/2022]
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