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Ogata A, Hayashi K, Kitano T, Onozaki K, Itoh S, Hida S. Staphylococcal γ-hemolysins induce IL-4 production in murine basophils. Biochem Biophys Res Commun 2022; 632:107-112. [DOI: 10.1016/j.bbrc.2022.09.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 09/18/2022] [Indexed: 11/02/2022]
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Nishiyama S, Urabe A, Morikawa A, Kobayashi M, Onozaki K, Itoh S, Hida S. Staphylococcal superantigen-like 12 induces the production of interleukin 4 in murine basophils. Biochem Biophys Res Commun 2020; 532:200-204. [PMID: 32859377 DOI: 10.1016/j.bbrc.2020.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 08/11/2020] [Indexed: 10/23/2022]
Abstract
S. aureus is associated with atopic dermatitis (AD). Several staphylococcal products including cell wall components, protease, and exotoxins, are thought to be involved in allergic inflammation of AD via activating immune cells such as T cells and mast cells. None of the staphylococcal exotoxins has been reported to activate a primary IL-4 inducer, basophils, that are known to produce large amounts of IL-4 in response to allergens as well as IgE-independent stimuli such as mites and helminth proteases. In this study, we investigated the ability of staphylococcal superantigen-like (SSL) family to activate basophils. SSL12, reported its activity to activate mast cells, induced the production of IL-4 in bone marrow derived basophils. SSL12 also evoked the release of IL-4 in freshly isolated murine basophils in bone marrow cells, as the depletion of basophils by basophils-specific antibodies against high-affinity IgE receptor and CD49b diminished the responsiveness of bone marrow cells for SSL12. These results propose the novel immune regulatory activity of SSL12 by inducing IL-4 in basophils, that contributes to the development of allergic inflammation disorders and the immune evasion of the cocci.
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Affiliation(s)
- Saishi Nishiyama
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Ayaka Urabe
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Arisa Morikawa
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Masato Kobayashi
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Kikuo Onozaki
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Saotomo Itoh
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Shigeaki Hida
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
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Kobayashi M, Kitano T, Nishiyama S, Sanjo H, Onozaki K, Taki S, Itoh S, Hida S. Staphylococcal superantigen-like 12 activates murine bone marrow derived mast cells. Biochem Biophys Res Commun 2019; 511:350-355. [PMID: 30795864 DOI: 10.1016/j.bbrc.2019.02.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 02/10/2019] [Indexed: 12/01/2022]
Abstract
Staphylococcal superantigen-like (SSL) protein is a family of exotoxins that consists of 14 SSLs, and the roles of several SSLs in immune evasion of the cocci have been revealed. However little is known whether they act as immune activators and are involved in inflammatory disorders such as atopic dermatitis. In this study we examined whether SSLs activate mast cells, the key player of local inflammation. SSL12 evoked the release of a granule enzyme β-hexosaminidase from bone marrow derived mast cells (BMMCs) in the absence of IgE. The release of the granule enzyme caused by SSL12 was not accompanied with the leakage of a cytosolic enzyme lactate dehydrogenase (LDH), unlike staphylococcal δ-toxin that was reported to induce both the release of β-hexosaminidase and the leakage of LDH from the cells, suggesting that SSL12 evokes the degranulation of mast cells without cell membrane damage. Furthermore SSL12 induced IL-6 and IL-13 in both mRNA and protein levels indicating that SSL12 induces de novo synthesis of the cytokines. Evans blue extravasation was elevated by the intradermal injection of SSL12, suggesting that SSL12 is also able to evoke local inflammation in vivo. These findings indicate the novel mast cell activating activity of SSLs, and SSL12 is likely an important factor in both initiation phase and effector phase of allergic and immune responses.
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Affiliation(s)
- Masato Kobayashi
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Takuma Kitano
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Saishi Nishiyama
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Hideki Sanjo
- Department of Molecular and Cellular Immunology, School of Medicine Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Kikuo Onozaki
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Shinsuke Taki
- Department of Molecular and Cellular Immunology, School of Medicine Shinshu University, 3-1-1 Asahi, Matsumoto, 390-8621, Japan
| | - Saotomo Itoh
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Shigeaki Hida
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
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Hayashi K, Itoh S, Morikawa A, Onozaki K, Taki S, Tsuji T, Hida S. Staphylococcal α-hemolysin does not induce cell damage in murine mast cells but it augments the degranulation induced by FcεRI cross-linking and ionomycin. Biochem Biophys Res Commun 2019; 508:263-269. [DOI: 10.1016/j.bbrc.2018.11.113] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 11/18/2018] [Indexed: 12/11/2022]
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Kohno K, Itoh S, Hanai A, Takii T, Fujiwara T, Onozaki K, Tsuji T, Hida S. Identification of matrix metalloproteinase 9-interacting sequences in staphylococcal superantigen-like protein 5. Biochem Biophys Res Commun 2018; 497:713-718. [PMID: 29462623 DOI: 10.1016/j.bbrc.2018.02.138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 02/15/2018] [Indexed: 11/17/2022]
Abstract
Staphylococcal superantigen like 5 (SSL5) is an exotoxin produced by S. aureus and has a strong inhibitory effect on MMP-9 enzymatic activity. However, the mechanism of inhibition remains unclear. We sought to identify the responsible regions of SSL5 for the interaction with MMP-9 by comparing a series of domain swap and deletion mutants of SSL5. Binding analyses revealed that SSL5 had two regions for binding to MMP-9 catalytic domain, β1-3 region (25SKELKNVTGY RYSKGGKHYL IFDKNRKFTR VQIFGK60) in N-terminal half and α4β9 region (138KELDFKLRQY LIQNFDLYKK FPKDSKIKVI MKD170) in C-terminal half. The collagen binding domain and zinc-chelating histidine residues of MMP-9 were not essential for the specific binding to SSL5. The domain swap mutants of SSL5 that conserved β1-3 but not α4β9 region inhibited the gelatinolysis by MMP-9, and the mutant of SSL7 that substituted β1-3 region to that of SSL5 acquired the binding and inhibitory activity. Furthermore, the polypeptide that harbored β1-3 region of SSL5 inhibited gelatinolysis by MMP-9. Taken together, SSL5 inhibits the MMP9 activity through binding to the catalytic domain, and the β1-3 region is responsible for the inhibition of proteolytic activity of MMP-9.
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Affiliation(s)
- Katsuhiro Kohno
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Saotomo Itoh
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan.
| | - Akari Hanai
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Takemasa Takii
- Bacteriology Division, Mycobacterium Reference Centre, Research Institute of Tuberculosis, 3-1-24 Matsuyama, Kiyose, Tokyo 204-8533, Japan
| | - Toshinobu Fujiwara
- Laboratory of Biochemistry, Graduate School of Pharmaceutical Sciences, Kindai University, 3-4-1. Kowakae, Higashi-osaka 577-8502, Japan
| | - Kikuo Onozaki
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
| | - Tsutomu Tsuji
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Shigeaki Hida
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, 467-8603, Japan
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Takeno M, Kitagawa S, Yamanaka J, Teramoto M, Tomita H, Shirai N, Itoh S, Hida S, Hayakawa K, Onozaki K, Takii T. 5-Hydroxy-2-methylpyridine Isolated from Cigarette Smoke Condensate Aggravates Collagen-Induced Arthritis in Mice. Biol Pharm Bull 2018; 41:877-884. [PMID: 29863076 DOI: 10.1248/bpb.b17-00982] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The risk of rheumatoid arthritis (RA) is linked to environmental and genetic factors. Cigarette smoking is an established environmental risk factor for the disease that contributes to its development and severity. Previously, we found that cigarette smoke condensate (CSC), both mainstream and sidestream, aggravates collagen type II-induced arthritis (CIA), which was observed following either intraperitoneal inoculation or nasal exposure. In the present study, we aimed to identify the compound in CSC, which aggravates CIA. By sequential fractionation and analysis, extraction with water/ether in different pH values, silica gel column chromatography, TLC, octadecyl silica (ODS) HPLC, GC/MS, and NMR, the active compound was identified as 5-hydroxy-2-methylpyridine (5H2MP). Its isomer 2-hydroxy-3-methylpyridine, but not 3-hydroxy-2-methylpyridine, was also active. 5H2MP was not mutagenic, and did not exhibit aryl hydrocarbon receptor-dependent activity. Our data help clarify the mechanism underlying the pathogenic effects of cigarette smoking on RA.
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Affiliation(s)
- Masafumi Takeno
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Shinya Kitagawa
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
| | - Junpei Yamanaka
- Department of Physical Chemistry of Colloid and Polymer, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Mayumi Teramoto
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Haruka Tomita
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Naohiro Shirai
- Department of Synthetic Supramolecular Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Saotomo Itoh
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Shigeaki Hida
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Kazuichi Hayakawa
- Institute of Nature and Environmental Technology, Kanazawa University
| | - Kikuo Onozaki
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
| | - Takemasa Takii
- Department of Hygienic Chemistry, Graduated School of Pharmaceutical Sciences, Nagoya City University
- Department of Mycobacterium Reference & Research, the Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association
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Itoh S, Takii T, Onozaki K, Tsuji T, Hida S. Identification of the blood coagulation factor interacting sequences in staphylococcal superantigen-like protein 10. Biochem Biophys Res Commun 2017; 485:201-208. [DOI: 10.1016/j.bbrc.2017.02.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 02/09/2017] [Indexed: 02/03/2023]
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Inoue Y, Abe K, Onozaki K, Hayashi H. TGF-β decreases the stability of IL-18-induced IFN-γ mRNA through the expression of TGF-β-induced tristetraprolin in KG-1 cells. Biol Pharm Bull 2016; 38:536-44. [PMID: 25832634 DOI: 10.1248/bpb.b14-00673] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have previously reported that transforming growth factor-β (TGF-β) down-regulates interferon-γ (IFN-γ) production in an interleukin-18 (IL-18) treated mouse natural killer (NK) cell line, LNK5E6. In LNK5E6 cells, TGF-β exhibited no inhibition of the IL-18-induced transcription of IFN-γ, but did stimulate the degradation of IFN-γ mRNA induced by IL-18. In the present study, we investigated the mechanism of the down-regulatory effects of TGF-β on IFN-γ mRNA expression in a human myelomonocytic cell line, KG-1, which produces IFN-γ in response to IL-18 alone. Interestingly, IL-18 induced the production of the IFN-γ through the stabilization of IFN-γ mRNA, but not the enhanced transcription of IFN-γ gene. The stability of IFN-γ mRNA was regulated by mRNA destabilizing elements in the 3'untranslated region (UTR) of IFN-γ mRNA, especially adenylate-uridylate (AU)-rich elements (AREs) in the 5' half of 3'UTR. Tristetraprolin (TTP), one of the ARE-binding proteins, destabilizes IFN-γ mRNA, and IL-18 repressed the expression of TTP mRNA. Moreover, TGF-β repressed the IL-18-induced expression of IFN-γ mRNA through the induction of TTP mRNA to destabilize IFN-γ mRNA. Our data is the first to reveal that the crosstalk between IL-18 and TGF-β through the expression of TTP regulates the production of IFN-γ.
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Affiliation(s)
- Yasumichi Inoue
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University
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Taniguchi K, Miyatake Y, Hayashi D, Takami A, Itoh S, Yamamoto S, Hida S, Onozaki K, Takii T. Early-shared Mycobacterium bovis bacillus Calmette-Guérin sub-strains induce Th1 cytokine production in vivo. Microbiol Immunol 2015; 59:684-9. [PMID: 26399380 DOI: 10.1111/1348-0421.12326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 09/11/2015] [Accepted: 09/17/2015] [Indexed: 01/20/2023]
Abstract
Interleukin-12 is one of the cytokines that induce acquired immunity by progressing the differentiation of T cells. When antigens are presented by APCs, including macrophages and DCs, T cells are activated and produce the Th1 cytokines IL-2 and IFN-γ. We have previously reported greater IL-12 production from macrophages infected with early-shared BCG sub-strains (ex. BCG-Japan, -Sweden) than from those infected with late-shared BCG (ex. BCG-Pasteur and -Connaught) . In this study, we investigated the Th1 cytokine-inducing activity of splenocytes co-cultured with BCG-infected DCs. Early-shared BCG-infected DCs produced IL-12 and TNF-α⋅ Furthermore, when they were co-cultured with purified protein derivative-stimulated DCs, the splenocytes of mice immunized with BCG-Tokyo/Japan produced more Th1 cytokine than did those of mice immunized with BCG-Connaught. In conclusion, early-shared BCG sub-strains more strongly induce Th1 cytokine production in vivo. This study provides basic information to inform the selection of candidates for primary vaccination.
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Affiliation(s)
- Keiichi Taniguchi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Yuuji Miyatake
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Daisuke Hayashi
- Japan BCG Laboratory, 3-1-5 Matsuyama, Kiyose, Tokyo 204-0022, Japan
| | - Atsuro Takami
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Saotomo Itoh
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Saburo Yamamoto
- Japan BCG Laboratory, 3-1-5 Matsuyama, Kiyose, Tokyo 204-0022, Japan
| | - Shigeaki Hida
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
| | - Takemasa Takii
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho-ku, Nagoya 467-8603
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Suzuki H, Hatano N, Muraki Y, Itoh Y, Kimura S, Hayashi H, Onozaki K, Ohi Y, Haji A, Muraki K. The NADPH oxidase inhibitor diphenyleneiodonium activates the human TRPA1 nociceptor. Am J Physiol Cell Physiol 2014; 307:C384-94. [PMID: 24944203 DOI: 10.1152/ajpcell.00182.2013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Transient receptor potential ankyrin 1 (TRPA1) is a Ca(2+)-permeable nonselective cation channel expressed in neuronal and nonneuronal cells and plays an important role in acute and inflammatory pain. Here, we show that an NADPH oxidase (NOX) inhibitor, diphenyleneiodonium (DPI), functions as a TRPA1 activator in human embryonic kidney cells expressing human TRPA1 (HEK-TRPA1) and in human fibroblast-like synoviocytes. Application of DPI at 0.03-10 μM induced a Ca(2+) response in HEK-TRPA1 cells in a concentration-dependent manner. The Ca(2+) response was effectively blocked by a selective TRPA1 antagonist, HC-030031 (HC). In contrast, DPI had no effect on HEK cells expressing TRPV1-V4 or TRPM8. Four other NOX inhibitors, apocynin (APO), VAS2870 (VAS), plumbagin, and 2-acetylphenothiazine, also induced a Ca(2+) response in HEK-TRPA1 cells, which was inhibited by pretreatment with HC. In the presence of 5 mM glutathione, the Ca(2+) response to DPI was effectively reduced. Moreover, mutation of cysteine 621 in TRPA1 substantially inhibited the DPI-induced Ca(2+) response, while it did not inhibit the APO- and VAS-induced responses. The channel activity was induced by DPI in excised membrane patches with both outside-out and inside-out configurations. Internal application of neomycin significantly inhibited the DPI-induced inward currents. In inflammatory synoviocytes with TRPA1, DPI evoked a Ca(2+) response that was sensitive to HC. In mice, intraplantar injection of DPI caused a pain-related response which was inhibited by preadministration with HC. Taken together, our findings demonstrate that DPI and other NOX inhibitors activate human TRPA1 without mediating NOX.
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Affiliation(s)
- Hiroka Suzuki
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Noriyuki Hatano
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Yukiko Muraki
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan
| | - Yuka Itoh
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Satoko Kimura
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan; and
| | - Hidetoshi Hayashi
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshiaki Ohi
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan; and
| | - Akira Haji
- Laboratory of Neuropharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan; and
| | - Katsuhiko Muraki
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Nagoya, Japan;
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Taniguchi K, Takii T, Yamamoto S, Maeyama JI, Iho S, Maruyama M, Iizuka N, Ozeki Y, Matsumoto S, Hasegawa T, Miyatake Y, Itoh S, Onozaki K. Reactivation of immune responses against Mycobacterium tuberculosis by boosting with the CpG oligomer in aged mice primarily vaccinated with Mycobacterium bovis BCG. Immun Ageing 2013; 10:25. [PMID: 23799936 PMCID: PMC3704610 DOI: 10.1186/1742-4933-10-25] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 06/15/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Mycobacterium bovis bacillus Calmette Guérin (BCG) vaccine, which has been inoculated to more than one billion people world-wide, has significant effect in preventing tuberculous meningitis and miliary tuberculosis (TB) in neonate and early childhood. However, BCG fails to adequately protect against pulmonary TB and reactivation of latent infections in adults. To overcome this problem, adequate booster is urgently desired in adult who received prior BCG vaccination, and appropriate animal models that substitute human cases would be highly valuable for further experimentation. FINDINGS The booster effect of the synthesized CpG oligomer (Oligo-B) on aged mice which had been primarily vaccinated with BCG at the age of 4-week old. The specific Th1 type reaction, production of interferon-γ, in response to TB antigens, purified protein derivatives (PPD) and protection against challenge with Mycobacterium tuberculosis (MTB) H37Rv decreased with increasing age and were not observed in 89-week old mice. In order to rejuvenate the Th1 type response against PPD and protection activity against MTB infection, Oligo-B, which is known to augment Th1 responses, was administered as a booster to 81-90-week old mice (late 50's in human equivalent) vaccinated with BCG at 4-week old. The boosting with Oligo-B increased the number of CD4+ CD44high CD62Lhigh, central memory type T cell. Furthermore, the Oligo-B boosting rejuvenated the ability of mice to protect against infection with MTB H37Rv. CONCLUSIONS Th1-adjuvant CpG oligo DNA, such as Oligo-B, may be a promising booster when coupled with BCG priming.
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Affiliation(s)
- Keiichi Taniguchi
- Department of Molecular Health Sciences, Graduated School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabe, Mizuho-ku, Nagoya 467-8603, Japan.
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12
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Itoh S, Yokoyama R, Kamoshida G, Fujiwara T, Okada H, Takii T, Tsuji T, Fujii S, Hashizume H, Onozaki K. Staphylococcal superantigen-like protein 10 (SSL10) inhibits blood coagulation by binding to prothrombin and factor Xa via their γ-carboxyglutamic acid (Gla) domain. J Biol Chem 2013; 288:21569-80. [PMID: 23754290 DOI: 10.1074/jbc.m113.451419] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The staphylococcal superantigen-like protein (SSL) family is composed of 14 exoproteins sharing structural similarity with superantigens but no superantigenic activity. Target proteins of four SSLs have been identified to be involved in host immune responses. However, the counterparts of other SSLs have been functionally uncharacterized. In this study, we have identified porcine plasma prothrombin as SSL10-binding protein by affinity purification using SSL10-conjugated Sepharose. The resin recovered the prodomain of prothrombin (fragment 1 + 2) as well as factor Xa in pull-down analysis. The equilibrium dissociation constant between SSL10 and prothrombin was 1.36 × 10(-7) M in surface plasmon resonance analysis. On the other hand, the resin failed to recover γ-carboxyglutamic acid (Gla) domain-less coagulation factors and prothrombin from warfarin-treated mice, suggesting that the Gla domain of the coagulation factors is essential for the interaction. SSL10 prolonged plasma clotting induced by the addition of Ca(2+) and factor Xa. SSL10 did not affect the protease activity of thrombin but inhibited the generation of thrombin activity in recalcified plasma. S. aureus produces coagulase that non-enzymatically activates prothrombin. SSL10 attenuated clotting induced by coagulase, but the inhibitory effect was weaker than that on physiological clotting, and SSL10 did not inhibit protease activity of staphylothrombin, the complex of prothrombin with coagulase. These results indicate that SSL10 inhibits blood coagulation by interfering with activation of coagulation cascade via binding to the Gla domain of coagulation factor but not by directly inhibiting thrombin activity. This is the first finding that the bacterial protein inhibits blood coagulation via targeting the Gla domain of coagulation factors.
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Affiliation(s)
- Saotomo Itoh
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabe-Dori, Mizuho-ku, Nagoya 467-8603, Japan.
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Abstract
Interleukin 1 (IL-1) was initially defined as a factor which is produced by macrophages and exhibits proliferative activity on thymocytes and fibroblasts, B cell activation and endogenous pyrogen activity. Now IL-1 is known to exhibit pleiotropic activities on various cell types and play important roles in the regulation of immune, nervous and endocrine systems, progression of tumor cells, hematopoietic cell proliferation/differentiation and especially in inflammatory diseases. In 1985 I found that IL-1 exhibits cytocidal activity against human melanoma cells. Since then I have been engaged in the research of various aspects of IL-1. This review summarizes current knowledge of IL-1, including our research and beneficial effect of IL-1 blocking on inflammatory diseases.
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Affiliation(s)
- Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan.
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Adachi M, Okamoto S, Chujyo S, Arakawa T, Yokoyama M, Yamada K, Hayashi A, Akita K, Takeno M, Itoh S, Takii T, Waguri-Nagaya Y, Otsuka T, Hayakawa K, Miyazawa K, Onozaki K. Cigarette smoke condensate extracts induce IL-1-beta production from rheumatoid arthritis patient-derived synoviocytes, but not osteoarthritis patient-derived synoviocytes, through aryl hydrocarbon receptor-dependent NF-kappa-B activation and novel NF-kappa-B sites. J Interferon Cytokine Res 2013; 33:297-307. [PMID: 23452206 DOI: 10.1089/jir.2012.0107] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cigarette smoking is a major established environmental risk factor for rheumatoid arthritis (RA), and synoviocyte-derived proinflammatory cytokines are implicated in the pathogenesis of RA. We have reported that aryl hydrocarbon or cigarette smoke condensate (CSC) is able to upregulate the production of proinflammatory cytokines from an RA patient-derived synovial fibroblast cell line MH7A. In this study, we compared the effect of CSC on induction of interleukin-1β (IL-1β) from RA or osteoarthritis (OA) patient-derived synovial fibroblasts, and studied the mechanism of the effect of CSC. CSC induced IL-1β mRNA from RA patient-derived synoviocytes and MH7A, but not from OA patient-derived synoviocytes. CSC induced the mRNA and both precursor and mature forms of IL-1β, and caspase-1 activity in MH7A. The mechanism of CSC-induced IL-1β mRNA expression was investigated in MH7A. Reporter gene analyses and promoter pull-down assay indicated that 3 novel NF-κB sites at -3771 to -3762 bp, -3105 to -3096 bp, and -2787 to -2778 bp in the promoter region of the IL-1β gene, especially the far distal NF-κB site and NF-κB activation, are critical for the gene activation by CSC. CSC-induced NF-κB activation, IL-1β promoter activity, IL-1β mRNA upregulation, and CYP1A1 mRNA induction were all inhibited by an aryl hydrocarbon receptor (AhR) antagonist α-naphthoflavone. These results indicate that CSC induced IL-1β production from RA patient-derived synoviocytes, but not OA patient-derived synoviocytes, through AhR-dependent NF-κB activation and novel NF-κB sites.
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Affiliation(s)
- Miki Adachi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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15
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Itoh S, Yokoyama R, Murase C, Takii T, Tsuji T, Onozaki K. Staphylococcal superantigen-like protein 10 binds to phosphatidylserine and apoptotic cells. Microbiol Immunol 2012; 56:363-71. [PMID: 22486378 DOI: 10.1111/j.1348-0421.2012.00452.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Staphylococcal superantigen-like proteins (SSLs) are a family of exoproteins that have structural similarities to staphylococcal superantigens. Although SSLs do not have superantigenic activity, some of them have been reported to bind to host immune related molecules and they have been implicated in immune evasion by S. aureus. In this study, we showed that SSL10 is capable of binding to phospholipids. SSL10 bound to phosphatidylserine (PS) containing liposome, but not to phosphatidylcholine liposome. SSL10, but not SSL7, bound to PS containing liposome, suggesting that SSL10 specifically binds to PS. Analysis of PS binding ability among recombinant truncated SSL10 fragments revealed that the β-barrel in the N-terminal oligonucleotide/oligosaccharide-binding (OB)-fold domain contributes to PS binding capacity. Fluorescein isothiocyanate labeled OB-fold of SSL10 stained hydrogen peroxide treated Jurkat cells. Annexin V is widely utilized for detection of apoptosis. Unlike annexin V, the OB-fold domain of SSL10 also bound to apoptotic cells in the presence of EDTA, suggesting that the OB-fold of SSL10 recognizes PS and apoptotic cells in a Ca(2+) independent manner. These findings suggest SSL10 and its derived peptides may be a novel detection tool for apoptotic cells.
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Affiliation(s)
- Saotomo Itoh
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabe-Dori, Mizuho-ku, Nagoya, Japan.
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16
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Hatano N, Itoh Y, Suzuki H, Muraki Y, Hayashi H, Onozaki K, Wood IC, Beech DJ, Muraki K. Hypoxia-inducible factor-1α (HIF1α) switches on transient receptor potential ankyrin repeat 1 (TRPA1) gene expression via a hypoxia response element-like motif to modulate cytokine release. J Biol Chem 2012; 287:31962-72. [PMID: 22843691 PMCID: PMC3442528 DOI: 10.1074/jbc.m112.361139] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Transient receptor potential ankyrin repeat 1 (TRPA1) forms calcium (Ca2+)- and zinc (Zn2+)-permeable ion channels that sense noxious substances. Despite the biological and clinical importance of TRPA1, there is little knowledge of the mechanisms that lead to transcriptional regulation of TRPA1 and of the functional role of transcriptionally induced TRPA1. Here we show induction of TRPA1 by inflammatory mediators and delineate the underlying molecular mechanisms and functional relevance. In human fibroblast-like synoviocytes, key inflammatory mediators (tumor necrosis factor-α and interleukin-1α) induced TRPA1 gene expression via nuclear factor-κB signaling and downstream activation of the transcription factor hypoxia-inducible factor-1α (HIF1α). HIF1α unexpectedly acted by binding to a specific hypoxia response element-like motif and its flanking regions in the TRPA1 gene. The induced TRPA1 channels, which were intrinsically activated by endogenous hydrogen peroxide and Zn2+, suppressed secretion of interleukin-6 and interleukin-8. The data suggest a previously unrecognized HIF1α mechanism that links inflammatory mediators to ion channel expression.
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Affiliation(s)
- Noriyuki Hatano
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, 1-100 Kusumoto, Chikusa, Nagoya 464-8650, Japan
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17
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Okamoto S, Adachi M, Chujo S, Yamada K, Akita K, Itoh S, Takii T, Hayakawa K, Onozaki K. Etiological role of cigarette smoking in rheumatoid arthritis: Nasal exposure to cigarette smoke condensate extracts augments the development of collagen-induced arthritis in mice. Biochem Biophys Res Commun 2011; 404:1088-92. [PMID: 21195061 DOI: 10.1016/j.bbrc.2010.12.118] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 12/21/2010] [Indexed: 11/22/2022]
Abstract
Cigarette smoking is a major environmental risk factor for rheumatoid arthritis (RA). However, the experimental bases supporting the etiological role of cigarette smoking in RA have not been fully provided. We have reported that cigarette smoke condensate (CSC), by means of subcutaneous injection into DBA/1J mice with collagen and complete Freund's adjuvant or intraperitoneal injection one day before immunization, augmented the development of arthritis in the mouse model of collagen type II-induced arthritis (CIA). However, these experimental procedures may not be appropriate for cigarette smoking. In this study, we nasally exposed mice to mainstream CSC and found that CSC augmented the induction and development of arthritis and antibody level against collagen. Histological examination confirmed the augmenting effect of CSC. These findings provide experimental bases supporting the etiological role of cigarette smoking in RA.
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Affiliation(s)
- Shosuke Okamoto
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho 3-1, Nagoya 467-8603, Japan
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18
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Xu J, Itoh Y, Hayashi H, Takii T, Miyazawa K, Onozaki K. Dihydrotestosterone Inhibits Interleukin-1.ALPHA. or Tumor Necrosis Factor .ALPHA.-Induced Proinflammatory Cytokine Production via Androgen Receptor-Dependent Inhibition of Nuclear Factor-.KAPPA.B Activation in Rheumatoid Fibroblast-Like Synovial Cell Line. Biol Pharm Bull 2011; 34:1724-30. [DOI: 10.1248/bpb.34.1724] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jian Xu
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Yuka Itoh
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Hidetoshi Hayashi
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Takemasa Takii
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Keiji Miyazawa
- Central Research Laboratories, Kissei Pharmaceutical Co., Ltd
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University
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Sakai S, Ohoka N, Onozaki K, Kitagawa M, Nakanishi M, Hayashi H. Dual mode of regulation of cell division cycle 25 A protein by TRB3. Biol Pharm Bull 2010; 33:1112-6. [PMID: 20606298 DOI: 10.1248/bpb.33.1112] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have recently demonstrated that TRB3, a novel stress-inducible protein, is an unstable protein regulated by the ubiquitin-proteasome system. The expression level of TRB3 protein is down-regulated by anaphase-promoting complex/cyclosome-cell division cycle division 20 homolog 1 (APC/C(Cdh1)) through its D-box motif. Here we demonstrate that TRB3 regulates the stability of cell division cycle 25 A (Cdc25A), an essential activator of cyclin dependent kinases (CDKs). The expression level of Cdc25A protein is suppressed by over-expression of TRB3, while knockdown of TRB3 enhances the endogenous Cdc25A expression level. On the other hand, Cdc25A degradation induced by DNA damage is significantly rescued by TRB3. When serine residues in the DSG motif, which is the critical sequences for the degradation of Cdc25A induced by DNA damage, is mutated to alanine (Cdc25A(DSG2X)), both stimulatory and protective effects of TRB3 on the Cdc25A degradation is disappeared. TRB3 protein interacts with both wild Cdc25A and mutant Cdc25A(DSG2X). Expression level of the endogenous TRB3 protein is down-regulated in a genotoxic condition. These results suggest TRB3 is a regulator for adjusting the expression level of Cdc25A both in a normal and a genotoxic conditions.
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Affiliation(s)
- Satoshi Sakai
- Department of Drug Metabolism and Disposition, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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20
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Chujo S, Okamoto S, Sunahara R, Adachi M, Yamada K, Hayashi H, Takii T, Hayakawa K, Onozaki K. Cigarette smoke condensate extracts augment collagen-induced arthritis in mice. Int Immunopharmacol 2010; 10:1194-9. [PMID: 20620226 DOI: 10.1016/j.intimp.2010.06.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Revised: 05/24/2010] [Accepted: 06/23/2010] [Indexed: 11/16/2022]
Abstract
Although cigarette smoking is a solid environmental risk factor for rheumatoid arthritis (RA) as revealed by epidemiological studies, the scientific basis has not been provided. Proinflammatory cytokines produced by synoviocytes are implicated in the pathogenesis of RA. As cigarette smoke condensate (CSC) is able to up-regulate the production of proinflammatory cytokines from human fibroblast-like synoviocytes, we studied the effect of CSC on induction of arthritis in the mouse model of collagen type II-induced arthritis (CIA). When mainstream CSC or sidestream CSC was administered into DBA/1J mice at the time of immunization with collagen and complete Freund adjuvant, CSC dose-dependently augmented the induction and clinical development of arthritis at both young and older mice. Peritoneal injected mainstream CSC one day before immunization also exhibited the augmenting effect, suggesting the systemic effect of CSC. These results support the etiological role of cigarette smoking in RA.
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Affiliation(s)
- Satomi Chujo
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya 467-8603, Japan
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21
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Ito T, Takii T, Maruyama M, Hayashi D, Wako T, Asai A, Horita Y, Taniguchi K, Yano I, Yamamoto S, Onozaki K. Effectiveness of BCG vaccination to aged mice. Immun Ageing 2010; 7:12. [PMID: 20809944 PMCID: PMC2936867 DOI: 10.1186/1742-4933-7-12] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2010] [Accepted: 09/01/2010] [Indexed: 12/21/2022]
Abstract
Background The tuberculosis (TB) still increases in the number of new cases, which is estimated to approach 10 million in 2010. The number of aged people has been growing all over the world. Ageing is one of risk factors in tuberculosis because of decreased immune responses in aged people. Mycobacterium bovis Bacillus Calmette Guérin (BCG) is a sole vaccine currently used for TB, however, the efficacy of BCG in adults is still a matter of debate. Emerging the multidrug resistant Mycobacterium tuberculosis (MDR-TB) make us to see the importance of vaccination against TB in new light. In this study, we evaluated the efficacy of BCG vaccination in aged mice. Results The Th1 responses, interferon-γ production and interleukin 2, in BCG inoculated aged mice (24-month-old) were comparable to those of young mice (4- to 6-week-old). The protection activity of BCG in aged mice against Mycobacterium tuberculosis H37Rv was also the same as young mice. Conclusion These findings suggest that vaccination in aged generation is still effective for protection against tuberculosis.
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Affiliation(s)
- Tsukasa Ito
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe, Mizuho, Nagoya 467-8603, Japan.
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22
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Hayashi H, Onozaki K. [Interleukin-1(IL-1) alpha, beta, IL-1 receptor (IL-1R), IL-1 receptor antagonist (IL-1ra)]. Nihon Rinsho 2010; 68 Suppl 7:62-66. [PMID: 20960750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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23
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Hayashi D, Takii T, Mukai T, Makino M, Yasuda E, Horita Y, Yamamoto R, Fujiwara A, Kanai K, Kondo M, Kawarazaki A, Yano I, Yamamoto S, Onozaki K. Biochemical characteristics amongMycobacterium bovisBCG substrains. FEMS Microbiol Lett 2010; 306:103-9. [DOI: 10.1111/j.1574-6968.2010.01947.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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24
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Arakawa T, Hayashi H, Itoh S, Takii T, Onozaki K. IL-1-induced ERK1/2 activation up-regulates p21Waf1/Cip1 protein by inhibition of degradation via ubiquitin-independent pathway in human melanoma cells A375. Biochem Biophys Res Commun 2010; 392:369-72. [DOI: 10.1016/j.bbrc.2010.01.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Accepted: 01/08/2010] [Indexed: 11/29/2022]
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Abstract
Rheumatoid arthritis (RA) is a systemic inflammatory disease characterized by the chronic inflammation of the synovium, which develops to joint destruction. Quite interestingly RA has not been present in the old world until 17 century. Tobacco has come from the new world, and epidemiological studies revealed cigarette smoking as a major risk factor for the disease. However, the mechanism how cigarette smoking contributes to RA has been largely unknown. It has been demonstrated that polycyclic aromatic hydrocarbons, constituents of cigarette smoke, and cigarette smoke extracts are able to induce proinflammatory cytokines from RA patient-derived fibroblast-like synoviocytes. Recent studies also suggest an important role of Th17 in RA and contribution of aryl hydrocarbon receptor to the induction and development of Th17 and RA. These new findings lead to uncovering the basis for the etiological role of cigarette smoking in the disease.
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Affiliation(s)
- Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya 467-8603, Japan.
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Onozaki K, Chujo S, Okamoto S, Sunahara R, Itoh Y, Hayashi H, Takii T, Hayakawa K. Cigarette smoke condensate extracts induce proinflammatory cytokines from synovial cells and exacerbate collagen-induced arthritis in mice. Cytokine 2009. [DOI: 10.1016/j.cyto.2009.07.395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Itoh Y, Hatano N, Hayashi H, Onozaki K, Miyazawa K, Muraki K. An environmental sensor, TRPV4 is a novel regulator of intracellular Ca2+ in human synoviocytes. Am J Physiol Cell Physiol 2009; 297:C1082-90. [PMID: 19759329 DOI: 10.1152/ajpcell.00204.2009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The activation of a vanilloid type 4 transient receptor potential channel (TRPV4) has an obligatory role in regulation of intracellular Ca(2+) (Ca(2+)(i)) in several types of cells including vascular and sensory organs. In this study, we provide evidence that TRPV4 is a functional regulator of Ca(2+)(i) in human synoviocytes. Although significant expression of TRPV4 in synoviocytes from patients with (RA) and without (CTR) rheumatoid arthritis was detected at mRNA and protein level, those in the human fibroblast-like synoviocyte line MH7A were rather lower. Consistently, the selective TRPV4 agonist 4alpha-phorbol 12,13-didecanoate (4alphaPDD) effectively elevated Ca(2+)(i) in the RA and CTR cells, which was abolished by the removal of external Ca(2+). Moreover, the elevation was inhibited by ruthenium red, a blocker of TRPVs. In MH7A cells transfected with human TRPV4 (MH7A-V4), 4alphaPDD elevated the Ca(2+)(i) in a similar manner to those in the RA and CTR cells. Electrophysiological analysis also revealed that 4alphaPDD activated nonselective cationic currents in RA cells. Application of 227 mosM solution to the RA and MH7A-V4 cells elevated their Ca(2+)(i), but this does not occur when it was applied to MH7A cells. Treatment of RA but not MH7A cells with 4alphaPDD for 24 h reduced their production of IL-8. These results suggest that an environmental sensor, TRPV4, is a novel regulator of intracellular Ca(2+) in human synoviocytes.
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Affiliation(s)
- Yuka Itoh
- Laboratory of Cellular Pharmacology, School of Pharmacy, Aichi-Gakuin University, Chikusa, Nagoya 464-8650, Japan
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28
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Hayashi D, Takii T, Fujiwara N, Fujita Y, Yano I, Yamamoto S, Kondo M, Yasuda E, Inagaki E, Kanai K, Fujiwara A, Kawarazaki A, Chiba T, Onozaki K. Comparable studies of immunostimulating activitiesin vitroamongMycobacterium bovisbacillus Calmette-Guérin (BCG) substrains. ACTA ACUST UNITED AC 2009; 56:116-28. [DOI: 10.1111/j.1574-695x.2009.00559.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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29
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Shizu M, Itoh Y, Sunahara R, Chujo S, Hayashi H, Ide Y, Takii T, Koshiko M, Chung SW, Hayakawa K, Miyazawa K, Hirose K, Onozaki K. Cigarette smoke condensate upregulates the gene and protein expression of proinflammatory cytokines in human fibroblast-like synoviocyte line. J Interferon Cytokine Res 2008; 28:509-21. [PMID: 18729741 DOI: 10.1089/jir.2007.0081] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Rheumatoid arthritis (RA) is characterized by proliferation of synoviocytes that produce proinflammatory cytokines, which are implicated in the pathogenesis of RA. When human fibroblast-like synoviocytes line MH7A was treated with cigarette smoke condensate (CSC), either mainstream or sidestream, expression levels of interleukin (IL)-1alpha, IL-1beta, IL-6, IL-8, and CYP1A1 mRNA were upregulated in both time- and dose-dependent manners. The upregulatory effects of CSC on these cytokines were not significantly inhibited by alpha-naphthoflavone, an aryl hydrocarbon receptor (AhR) antagonist, suggesting that the effects of CSC were independent of AhR. Cycloheximide treatment indicated that the augmenting effect of CSC on IL-1alpha, IL-1beta and IL-8, but not IL-6 and CYP1A1, mRNA expression requires de novo protein synthesis. CSC also induced cytokines at protein levels and further augmented the effects of tumor necrosis factor alpha on induction of these cytokines at both mRNA and protein levels. These results support the epidemiological studies indicating a strong association between heavy cigarette smoking and pathogenesis of RA.
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Affiliation(s)
- Miki Shizu
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
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30
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Tomono K, Tomiyama E, Dai K, Onozaki K, Miyamura K. Formation of alkylated di-cation by weak hydrogen bonds in the crystal of Ni(dmit) 2salts. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308087175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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31
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Asamitsu K, Yamaguchi T, Nakata K, Hibi Y, Victoriano AFB, Imai K, Onozaki K, Kitade Y, Okamoto T. Inhibition of Human Immunodeficiency Virus Type 1 Replication by Blocking I B Kinase with Noraristeromycin. J Biochem 2008; 144:581-9. [DOI: 10.1093/jb/mvn104] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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32
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Enya K, Hayashi H, Takii T, Ohoka N, Kanata S, Okamoto T, Onozaki K. The interaction with Sp1 and reduction in the activity of histone deacetylase 1 are critical for the constitutive gene expression of IL-1 alpha in human melanoma cells. J Leukoc Biol 2007; 83:190-9. [PMID: 17906119 DOI: 10.1189/jlb.0106008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A375-6 human melanoma cells are sensitive to the antiproliferative effect of IL-1. After a long period of culturing, we have obtained cells resistant to IL-1. The resistant clone A375-R8 constitutively produced IL-1 alpha. In this study, we identified a sequence, CGCC, located at -48 to -45 upstream of the transcription start site, to be essential for the constitutive IL-1 alpha gene activation. Specificity protein 1 (Sp1) and Sp3 bound to the nucleotide containing the sequence. Although the binding level to the nucleotide and expression level of Sp1 and Sp3 are comparable in A375-R8 and A375-6 cells, transactivation activity of Sp1 is higher in A375-R8 cells as compared with A375-6 cells. Sp3 could not transactivate the IL-1 alpha promoter. These results suggest that Sp1 but not Sp3 is important for IL-1 alpha gene activation. Trichostatin A (TSA), an inhibitor of histone deacetylase (HDAC), greatly augmented the IL-1 alpha promoter activity in A375-6 cells to the level comparable with that in A375-R8 cells. TSA also induced IL-1 alpha mRNA expression in A375-6 cells. Sp1 and Sp3 bound to HDAC1 in A375-R8 and A375-6 cells. The chromatin immunoprecipitation assay revealed the binding of Sp1 and HDAC1 to the promoter region of the IL-1 alpha gene. The activities of HDAC bound to Sp1 and Sp3, and that of HDAC1 was lower in A375-R8 cells as compared with A375-6 cells. These results indicate that the reduction in the activity and interaction of HDAC1 with Sp1 are critical for the constitutive IL-1 alpha gene expression.
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Affiliation(s)
- Kazuaki Enya
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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33
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Ohoka N, Hattori T, Kitagawa M, Onozaki K, Hayashi H. Critical and functional regulation of CHOP (C/EBP homologous protein) through the N-terminal portion. J Biol Chem 2007; 282:35687-94. [PMID: 17872950 DOI: 10.1074/jbc.m703735200] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
C/EBP homologous protein (CHOP) is an endoplasmic reticulum stress-inducible protein that plays a critical role in the regulation of programmed cell death; however, the regulation of its function has not been well characterized. We have previously demonstrated that CHOP is regulated by the ubiquitin-proteasome system. In this study, during the process of clarifying the mechanism of the degradation of CHOP, we identified a novel regulation domain of CHOP in its N-terminal portion that is involved in various regulations and functions. The CHOP N-terminal domain is necessary not only for protein degradation but also for its transactivity and interaction with p300. In addition, trichostatin A, a histone deacetylase inhibitor, repressed the degradation of CHOP protein via the N-terminal domain. TRB3, a mammalian tribbles homolog that functions as a repressor of CHOP, also interacted with CHOP via the N-terminal portion and significantly blocked the association of p300 with CHOP. These results suggest that the N-terminal portion of CHOP plays a crucial role in its functional regulation and enable us to identify a novel function of TRB3 as an intracellular antagonist of the p300-binding domain of CHOP.
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Affiliation(s)
- Nobumichi Ohoka
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603, Japan
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Itoh Y, Hayashi H, Xu J, Takii T, Miyazawa K, Ariga H, Akahoshi T, Waguri-Nagaya Y, Otsuka T, Okamoto T, Onozaki K. Dihydrotestosterone inhibits tumor necrosis factor alpha induced interleukin-1alpha mRNA expression in rheumatoid fibroblast-like synovial cells. Biol Pharm Bull 2007; 30:1140-3. [PMID: 17541168 DOI: 10.1248/bpb.30.1140] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease that affects multiple synovial joints. Proinflammatory cytokines, such as interleukin-1 (IL-1) and tumor necrosis factor (TNF)alpha play important roles as principle inflammatory and destructive components of the disease. RA is known to be associated with significant gender differences in its prevalence and clinical features. We found that a potent androgen, 5alpha-dihydrotestosterone (DHT) inhibits IL-1alpha mRNA expression induced by TNFalpha and the DHT effect was inhibited by an androgen receptor antagonist, hydroxyflutamide (OHF). DHT inhibited the NF-kappaB activation induced by TNFalpha in a manner dependent on the androgen receptor (AR). These results suggest that DHT inhibits the TNFalpha-induced IL-1alpha mRNA expression by inhibiting NF-kappaB activation, and contributes to the gender differences of the disease.
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Affiliation(s)
- Yuka Itoh
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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Itoh Y, Hayashi H, Miyazawa K, Kojima S, Akahoshi T, Onozaki K. 17beta-estradiol induces IL-1alpha gene expression in rheumatoid fibroblast-like synovial cells through estrogen receptor alpha (ERalpha) and augmentation of transcriptional activity of Sp1 by dissociating histone deacetylase 2 from ERalpha. J Immunol 2007; 178:3059-66. [PMID: 17312152 DOI: 10.4049/jimmunol.178.5.3059] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rheumatoid arthritis (RA) occurs four times more frequently in women than in men, although the mechanistic basis of the gender difference is unknown. RA is characterized by the overproliferation of synoviocytes producing proinflammatory cytokines such as IL-1, implicated in the pathogenesis of the disease. In this study we examined whether 17beta-estradiol (E2) induced IL-1alpha mRNA expression in the rheumatoid fibroblast-like cell line MH7A, as well as in primary synovial cells from RA patients, and investigated the underlying molecular mechanisms. E2 induced IL-1alpha mRNA expression in both cell types in an estrogen receptor-dependent manner. In MH7A cells ERalpha but not ERbeta mediated the effects of E2. Deletion and mutation analysis revealed that a GC-rich region within the IL-1alpha gene promoter was responsible for the response to E2. EMSAs showed that Sp1 and Sp3 bound to the GC-rich region and that the transcriptional activity of Sp1 was up-regulated by the treatment with E2. Sp1 and ERalpha interacted physically regardless of the presence of E2. Physical interaction was also observed between ERalpha and histone deacetylase 2 (HDAC2), and E2 induced the dissociation of HDAC2 from ERalpha. These results suggest that E2 induces the dissociation of corepressor HDAC2 from ERalpha, which leads to the augmentation of Sp1 transcriptional activity through the GC-rich region within the IL-1alpha gene promoter.
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Affiliation(s)
- Yuka Itoh
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Japan
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Hayashi A, Chiba T, Hayashi H, Sasayama S, Ishiguro T, Onozaki K. Synthesis of glycosylated human tumor necrosis factor alpha coupled with N-acetylneuraminic acid. Cancer Immunol Immunother 2007; 56:545-53. [PMID: 17031642 PMCID: PMC11029862 DOI: 10.1007/s00262-006-0209-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 07/12/2006] [Indexed: 11/26/2022]
Abstract
In order to study the effect of glycosylation on its biological activities, and to develop TNFalpha with less deleterious effects, recombinant human TNFalpha was chemically coupled with N-acetylneuraminic acid (NeuAc). NeuAc with C9 spacer was coupled to TNFalpha by acyl azide method. Two glycosylated TNFalphas, designated L NeuAc-TNFalpha and H NeuAc-TNFalpha, were purified by anion-exchange chromatography. NeuAc coupling to TNFalpha was confirmed by lectin blotting. Average number of carbohydrate molecules introduced per molecule of L NeuAc-TNFalpha and H NeuAc-TNFalpha were estimated to be 1.0 and 1.5, respectively. We examined a variety of TNFalpha activities in vitro, including antiproliferative or cytotoxic activities to tumor cells, proliferative effect on fibroblast cells, stimulatory effects on IL-6 production by melanoma cells and NF-kappaB activation in hepatoma cells. L NeuAc-TNFalpha and H NeuAc-TNFalpha exhibited reduced activities about 1/3 and 1/10 as compared to native TNFalpha in all the activities performed in vitro.
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Affiliation(s)
- Akiko Hayashi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Taku Chiba
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Hidetoshi Hayashi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Satoshi Sasayama
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Toshiyuki Ishiguro
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
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Chiba T, Takii T, Nishimura K, Yamamoto Y, Morikawa H, Abe C, Onozaki K. Synthesis of new sugar derivatives from Stachys sieboldi Miq and antibacterial evaluation against Mycobacterium tuberculosis, Mycobacterium avium, and Staphylococcus aureus. Bioorg Med Chem Lett 2007; 17:2487-91. [PMID: 17331717 DOI: 10.1016/j.bmcl.2007.02.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2006] [Revised: 01/22/2007] [Accepted: 02/09/2007] [Indexed: 11/27/2022]
Abstract
A series of sugar derivatives (7-14) were synthesized from stachyose, a sugar compound of Stachys sieboldi Miq, and evaluated for antibacterial activity against Mycobacterium tuberculosis, Mycobacterium avium, and Staphylococcus aureus, and their structure-activity relationships were studied. The results showed that the compound OCT359 (allyl O-(2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranosyl)-(1-->6)-O-(2,3,4-tri-O-acetyl-alpha-D-galactopyranosyl)-(1-->6)-O-2,3,4-tri-O-acetyl-beta-D-glucopyranoside) (12) exhibited in vitro antibacterial activity. The allyl group at C-1 and the acetoxy groups of the manninotrioside were requisite for the antibacterial activity.
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Affiliation(s)
- Taku Chiba
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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Abstract
Small-conductance Ca2+-activated K+ (SK2) channel plays an important role in the activation of Jurkat T-lymphocytes by maintaining electrical gradients for the sustained Ca2+ influx. Apamin-sensitive K+ current was significantly decreased with cell-cycle progression from G0/G1 into G2/M phases, and protein expression of SK2 channels showed parallel down-regulation, with its highest expression at early G0/G1 phase. In the G0/G1 phase, the apamin-sensitive component of thapsigargin-induced Ca2+ influx was significantly larger than that in the G2/M phase. These observations suggest that SK2-channel activation may largely contribute to the sustained Ca2+ influx in the G0/G1 phase in comparison of that in the G2/M phase in Jurkat T-lymphocytes.
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Affiliation(s)
- Takashi Morimoto
- Department of Molecular & Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Japan
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Hayashi A, Hayashi H, Chiba T, Sasayama S, Onozaki K. N-acetylneuraminic acid coupled human recombinant TNFalpha exhibits enhanced anti-tumor activity against Meth-A fibrosarcoma and reduced toxicity. Cancer Immunol Immunother 2006; 56:555-62. [PMID: 17031641 PMCID: PMC7080163 DOI: 10.1007/s00262-006-0210-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 07/12/2006] [Indexed: 11/27/2022]
Abstract
In order to study the effect of glycosylation on its biological activities and to develop tumor necrosis factor α (TNFα) with less deleterious effects, N-acetylneuraminic acid (NeuAc) with a C9 spacer was chemically coupled to human recombinant TNFα. NeuAc-coupled TNFα (NeuAc-TNFα) exhibited reduced activities in vitro by about threefold compared to native TNFα. In this study, we examined a variety of TNFα activities in vivo. NeuAc-TNFα reduced activities in the up-regulation of serum levels of IL-6 and NOx, but comparable activity as native TNFα in the down-regulation of the serum level of glucose. However, NeuAc-TNFα was more potent than TNFα in the up-regulation of the serum level of serum amyloid A (SAA). NeuAc-TNFα was less toxic to mice. In addition, NeuAc-TNFα exhibited an augmented anti-tumor activity against Meth-A fibrosarcoma without hemorrhagic necrosis. These results indicate that coupling with NeuAc enabled us to develop neoglycoTNFα with selective activities in vivo, including enhanced anti-tumor activity but reduced toxicity.
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Affiliation(s)
- Akiko Hayashi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Hidetoshi Hayashi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Taku Chiba
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Satoshi Sasayama
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Tanabe, Mizuho, Nagoya, 467-8603 Japan
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Shirakawa K, Maeda S, Gotoh T, Hayashi M, Shinomiya K, Ehata S, Nishimura R, Mori M, Onozaki K, Hayashi H, Uematsu S, Akira S, Ogata E, Miyazono K, Imamura T. CCAAT/enhancer-binding protein homologous protein (CHOP) regulates osteoblast differentiation. Mol Cell Biol 2006; 26:6105-16. [PMID: 16880521 PMCID: PMC1592788 DOI: 10.1128/mcb.02429-05] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Differentiation of committed osteoblasts is controlled by complex activities involving signal transduction and gene expression, and Runx2 and Osterix function as master regulators for this process. Recently, CCAAT/enhancer-binding proteins (C/EBPs) have been reported to regulate osteogenesis in addition to adipogenesis. However, the roles of C/EBP transcription factors in the control of osteoblast differentiation have yet to be fully elucidated. Here we show that C/EBP homologous protein (CHOP; also known as C/EBPzeta) is expressed in bone as well as in mesenchymal progenitors and primary osteoblasts. Overexpression of CHOP reduces alkaline phosphatase activity in primary osteoblasts and suppresses the formation of calcified bone nodules. CHOP-deficient osteoblasts differentiate more strongly than their wild-type counterparts, suggesting that endogenous CHOP plays an important role in the inhibition of osteoblast differentiation. Furthermore, endogenous CHOP induces differentiation of calvarial osteoblasts upon bone morphogenetic protein (BMP) treatment. CHOP forms heterodimers with C/EBPbeta and inhibits the DNA-binding activity as well as Runx2-binding activity of C/EBPbeta, leading to inhibition of osteocalcin gene transcription. These findings indicate that CHOP acts as a dominant-negative inhibitor of C/EBPbeta and prevents osteoblast differentiation but promotes BMP signaling in a cell-type-dependent manner. Thus, endogenous CHOP may have dual roles in regulating osteoblast differentiation and bone formation.
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Affiliation(s)
- Ken Shirakawa
- Department of Biochemistry, The Cancer Institute of the Japanese Foundation for Cancer Research (JFCR), 3-10-6, Ariake, Koto-ku, Tokyo 135-8550, Japan
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Inoue Y, Itoh Y, Abe K, Okamoto T, Daitoku H, Fukamizu A, Onozaki K, Hayashi H. Smad3 is acetylated by p300/CBP to regulate its transactivation activity. Oncogene 2006; 26:500-8. [PMID: 16862174 DOI: 10.1038/sj.onc.1209826] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Smad proteins are crucial for the intracellular signaling of transforming growth factor-beta (TGF-beta). Upon their receptor-induced activation, Smad proteins are phosphorylated and translocated to the nucleus to activate the transcription of a select set of target genes. Here, we show that the co-activator p300/CBP bound and acetylated Smad3 as well as Smad2 in vivo, and that the acetylation was stimulated by TGF-beta. A major acetylation site of Smad3 by p300/CBP is Lys-378 in the MH2 domain (Smad3C) known to be critical for the regulation of transcriptional activity. Replacement of Lys-378 with Arg decreased the transcriptional activity of GAL4-Smad3C in a luciferase assay. Moreover, p300/CBP potentiated the transcriptional activity of GAL4-Smad3C, but not the acetylation-resistant GAL4-Smad3C(K378R) mutant. These results suggest that acetylation of Smad3 by p300/CBP regulates positively its transcriptional activity.
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Affiliation(s)
- Y Inoue
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
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Katagiri D, Hayashi H, Victoriano AFB, Okamoto T, Onozaki K. Estrogen stimulates transcription of human immunodeficiency virus type 1 (HIV-1). Int Immunopharmacol 2006; 6:170-81. [PMID: 16399621 DOI: 10.1016/j.intimp.2005.07.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2005] [Revised: 07/14/2005] [Accepted: 07/27/2005] [Indexed: 11/20/2022]
Abstract
Gene expression from human immunodeficiency virus (HIV) provirus is a crucial step for the viral replication. Here we examined a potential role of 17beta-estradiol (E2) in HIV-1 transcription. Transient luciferase expression studies revealed that E2 activated HIV-LTR reporter gene in HEK293 cells when the cells were co-transfected with estrogen receptor alpha (ERalpha) but not ERbeta expression plasmid. This E2 effect was abrogated by a specific antagonist to ER, ICI 182,780, indicating that it was mediated by ERalpha. Mutation analysis revealed that Sp1 binding site but not nuclear factor-kappa B (NF-kappaB) binding site of HIV-1 LTR is critical to the E2 effect. In addition, whereas E2 could not induce DNA-binding activity of NF-kappaB, E2 could augment both Sp1 DNA-binding and transcriptional activity. These findings suggest a contribution of estrogen for HIV-1 replication through ERalpha by augmenting Sp1 DNA-binding and transcriptional activity.
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Affiliation(s)
- Daichi Katagiri
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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Hayashi H, Onozaki K. [Interleukin-1 (IL-1) alpha, beta, IL-1 receptor, IL-1 receptor antagonist (IL-1ra)]. Nihon Rinsho 2005; 63 Suppl 8:60-4. [PMID: 16149452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
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44
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Takii T, Hamasaki S, Hirano K, Abe C, Onozaki K. Simple fibroblast-based assay to test the pyrazinamide susceptibility of Mycobacterium tuberculosis. Antimicrob Agents Chemother 2005; 49:804-7. [PMID: 15673774 PMCID: PMC547215 DOI: 10.1128/aac.49.2.804-807.2005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A simple fibroblast-based assay (SFA) was found to be efficient in evaluating the susceptibilities of clinical isolates of Mycobacterium tuberculosis to pyrazinamide (PZA). Forty-five clinical isolates were examined. The MICs of PZA for susceptible strains in an SFA were between 3.13 and 12.5 microg/ml, and the MICs of PZA for resistant strains were more than 100 microg/ml.
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Affiliation(s)
- Takemasa Takii
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-Ku, Nagoya 467-8603, Japan.
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Ohoka N, Yoshii S, Hattori T, Onozaki K, Hayashi H. TRB3, a novel ER stress-inducible gene, is induced via ATF4-CHOP pathway and is involved in cell death. EMBO J 2005; 24:1243-55. [PMID: 15775988 PMCID: PMC556400 DOI: 10.1038/sj.emboj.7600596] [Citation(s) in RCA: 752] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2004] [Accepted: 02/03/2005] [Indexed: 12/27/2022] Open
Abstract
C/EBP homologous protein (CHOP) is a stress-inducible nuclear protein that is crucial for the development of programmed cell death and regeneration; however, the regulation of its function has not been well characterized. Slbo, a Drosophila homolog of C/EBP (CCAAT/enhancer binding protein), was shown to be unstabilized by tribbles. Here, we identified TRB3 as a tribbles ortholog in humans, which associated with CHOP to suppress the CHOP-dependent transactivation. TRB3 is induced by various forms endoplasmic reticulum (ER) stress later than CHOP. Tunicamycin treatment enhanced the TRB3 promoter activity, while dominant-negative forms of CHOP suppressed the tunicamycin-induced activation. In addition, the tunicamycin response region in the TRB3 promoter contains amino-acid response elements overlapping the CHOP-binding site, and CHOP and ATF4 cooperated to activate this promoter activity. Knockdown of endogenous ATF4 or CHOP expression dramatically repressed tunicamycin-induced TRB3 induction. Furthermore, knockdown of TRB3 expression decreased ER stress-dependent cell death. These results indicate that TRB3 is a novel target of CHOP/ATF4 and downregulates its own induction by repression of CHOP/ATF4 functions, and that it is involved in CHOP-dependent cell death during ER stress.
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Affiliation(s)
- Nobumichi Ohoka
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
| | - Satoshi Yoshii
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
| | - Takayuki Hattori
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
- Department of Biochemistry 1, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kikuo Onozaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
| | - Hidetoshi Hayashi
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuo-ku, Nagoya 467-8603, Japan. Tel./Fax: +81 52 836 3420; E-mail:
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Matsumura T, Hayashi H, Takii T, Thorn CF, Whitehead AS, Inoue JI, Onozaki K. TGF-β down-regulates IL-1α-induced TLR2 expression in murine hepatocytes. J Leukoc Biol 2004; 75:1056-1061. [PMID: 15039464 DOI: 10.1189/jlb.0104108] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2004] [Revised: 02/05/2004] [Accepted: 02/09/2004] [Indexed: 01/15/2023] Open
Abstract
We have previously reported that the proinflammatory cytokine interleukin (IL)-1alpha can up-regulate functional Toll-like receptor 2 (TLR2) expression in primary-cultured murine hepatocytes, and bacterial lipopeptide (BLP) is capable of signaling through TLR2 to induce serum amyloid A (SAA) expression in hepatocytes. In the present study, we investigated the effect of the anti-inflammatory cytokine transforming growth factor-beta (TGF-beta) on TLR2 expression in primary-cultured murine hepatocytes. At the mRNA and protein levels, TGF-beta up-regulated TLR2 expression but inhibited TLR2 expression induced by IL-1alpha at 24 h. BLP-induced SAA promoter activity could be augmented by pretreatment with IL-1alpha but not TGF-beta or the combination of TGF-beta and IL-1alpha. TLR2 promoter activity and nuclear factor (NF)-kappaB activation by IL-1alpha were inhibited by TGF-beta treatment. Pretreatment with TGF-beta strongly suppressed IL-1alpha-induced TLR2 promoter activity and NF-kappaB activation, which was consistent with the down-regulation of type I IL-1 receptor (IL-1RI) mRNA expression. IL-1alpha up-regulated IL-1RI mRNA, but it was inhibited by the treatment with TGF-beta. These results suggest that TGF-beta suppresses the induction of TLR2 expression by IL-1alpha through down-regulation of IL-1RI expression. These results also demonstrate the disparity between IL-1alpha and TGF-beta in regulating TLR2-mediated SAA production in hepatocytes.
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Affiliation(s)
- Takayuki Matsumura
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuho-ku, Nagoya, Aichi 467-8603, Japan
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Tamaki A, Hayashi H, Nakajima H, Takii T, Katagiri D, Miyazawa K, Hirose K, Onozaki K. Polycyclic aromatic hydrocarbon increases mRNA level for interleukin 1 beta in human fibroblast-like synoviocyte line via aryl hydrocarbon receptor. Biol Pharm Bull 2004; 27:407-10. [PMID: 14993811 DOI: 10.1248/bpb.27.407] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Rheumatoid arthritis (RA) is characterized by proliferation of synoviocytes that produce proinflammatory cytokines, which is implicated in the pathogenesis of the disease. Among the cytokines, IL-1 is the critical mediator of the disease. When human fibroblast-like synoviocytes line, MH7A, was treated with 3-methylcholanthrene (3-MC), a polycyclic aromatic hydrocarbon (PAH), mRNA of IL-1beta was up-regulated. MH7A cells express functional aryl hydrocarbon receptor (AhR) as shown by 3-MC-inducible CYP1A1 mRNA expression. The effect of 3-MC was inhibited by alpha-napthoflavone, an AhR antagonist, indicating that the effect of 3-MC is mediated via AhR. Benzo[a]pyrene (B[a]P) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) also up-regulated mRNA level of IL-1beta in the cells via AhR. As PAHs are much contained in cigarette smoke, these findings provide the possible basis for epidemiological studies indicating a strong association between heavy cigarette smoking and outcome of RA.
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Affiliation(s)
- Ayako Tamaki
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Japan
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48
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Inoue Y, Kitagawa M, Onozaki K, Hayashi H. Contribution of the Constitutive and Inducible Degradation of Smad3 by the Ubiquitin-Proteasome Pathway to Transforming Growth Factor-βSignaling. J Interferon Cytokine Res 2004; 24:43-54. [PMID: 14980084 DOI: 10.1089/107999004772719909] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Smad proteins are crucial for the intracellular signaling of transforming growth factor-beta (TGF-beta). After receptor-induced activation, Smad proteins are phosphorylated and translocated to the nucleus to activate transcription of a select set of target genes. Here, we investigated the turnover of Smad3, positively regulating Smad for TGF-beta signaling. In a steady state, the inhibition of proteasome activity leads to stabilization of Smad3 protein. Smad proteins are multi-ubiquitinated and degraded independently of the phosphorylation induced by the TGF-beta receptors. Moreover, the degradation of Smad3 was enhanced by treatment with TGF-beta, and phosphorylated Smad3 was accumulated on proteasome inhibition. Ubiquitination of phosphorylated Smad3 but not Smad3(3SA), a receptor-mediated phosphorylation-incompetent mutant, was observed in the nucleus after treatment with TGF-beta. These findings suggest that, in a steady state, Smad3 is constitutively degraded via the ubiquitin-proteasome pathway in the cytoplasm and that, in response to TGF-beta, it is phosphorylated and translocated into the nucleus, where it is degraded through the ubiquitin-proteasome pathway.
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Affiliation(s)
- Yasumichi Inoue
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya 467-8603, Japan
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Ohata H, Tetsuka T, Hayashi H, Onozaki K, Okamoto T. 3-methylcholanthrene activates human immunodeficiency virus type 1 replication via aryl hydrocarbon receptor. Microbiol Immunol 2003; 47:363-70. [PMID: 12825898 DOI: 10.1111/j.1348-0421.2003.tb03408.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We found that 3-methylcholanthrene (3-MC) could induce the reactivation of human immunodeficiency virus type 1 (HIV-1) replication in OM 10.1 cell, promyelocytic cell line latently infected with HIV-1. Transient luciferase expression experiments have revealed no particular transcription factors that are responsible for the effect of 3-MC in inducing HIV-1 gene expression as HIV-1 LTR mutants lacking various upstream transcriptional activators similarly responded to 3-MC. In addition, there was no effect of 3-MC on the DNA binding activity of nuclear factor-kappa B (NF-kappaB) that was previously reported to be crucial for the effect of 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD), a chemical homologue of 3-MC. However, overexpression of wild type aryl hydrocarbon receptor (AhR), a nuclear receptor of polycyclic aromatic hydrocarbons (PAHs) such as 3-MC, augmented the effect of 3-MC in the induction of gene expression from HIV-1 LTR. Moreover, a dominant negative mutant of AhR dramatically reduced the 3-MC-mediated activation of HIV-1 LTR. These findings suggest that 3-MC stimulates HIV-1 transcription by interacting with general transcription factors. Our observations indicate that chronic exposure of the HIV-1 infected individuals to PAHs may be contributable to the clinical development of acquired immunodeficiency syndrome (AIDS) among the individuals infected with HIV.
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Affiliation(s)
- Hirokazu Ohata
- Department of Molecular Genetics, Nagoya City University Medical School, Nagoya, Aichi 467-8601, Japan
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Ono K, Yoshihara K, Suzuki H, Tanaka KF, Takii T, Onozaki K, Sawada M. Preservation of hematopoietic properties in transplanted bone marrow cells in the brain. J Neurosci Res 2003; 72:503-7. [PMID: 12704811 DOI: 10.1002/jnr.10588] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Recent studies have described the possible transdifferentiation of bone marrow cells (BMC) into neurons and glia when they migrate to the brain. However, we have reported that some immature BMC migrating into the brain parenchyma after bone marrow transplantation express early hematopoietic markers but not neural or glial markers. The present study further characterizes transplanted BMC that migrate to the brain. Double immunolabeling confirmed that BMC migrating to the brain expressed hematopoietic but not neural markers, such as nestin, microtubule-associated protein-2 and glial fibrillary acidic protein, even 4 and 18 weeks after bone marrow transplantation. BMC that expressed green fluorescent protein also expressed hematopoietic but not neural markers when cultured with mixed brain cells according to double immunolabeling and single-cell dissection using a laser. Analysis of the DNA content indicated that most of the migrated BMC were arrested at the G0/G1 phase, and aneuploidy or tetraploidy was undetectable. Thus, BMC that migrate to the brain probably have preserved hematopoietic properties under physiological conditions.
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Affiliation(s)
- Kenji Ono
- Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Mizuho, Nagoya, Aichi, Japan
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