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Sato N, Tsuji G, Sasaki Y, Usami A, Moki T, Onizuka K, Yamada K, Nagatsugi F. A new strategy for site-specific alkylation of DNA using oligonucleotides containing an abasic site and alkylating probes. Chem Commun (Camb) 2016; 51:14885-8. [PMID: 26304997 DOI: 10.1039/c5cc03915k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Selective chemical reactions with DNA, such as its labelling, are very useful in many applications. In this paper, we discuss a new strategy for the selective alkylation of DNA using an oligonucleotide containing an abasic site and alkylating probes. We designed three probes consisting of 2-AVP as a reactive moiety and three kinds of binding moiety with high affinity to duplex DNA. Among these probes, Hoechst-AVP probe exhibited high selectivity and efficient reactivity to thymine bases at the site opposite an abasic site in DNA. Our method is potentially useful for inducing site-directed reactions aimed at inhibiting polymerase reactions.
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Kumagai S, Tsuji G, Ichise Y, Umeda R, Muta A, Abe K, Izumi M, Uemura Y, Uga H, Kurata H, Misaki K, Onishi A. THU0190 The Prediction Model for Methotrexate Efficacy Consisting of 9 SNPS Selected by Dmet Microarray Profiling in Japanese RA Patients. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Takei K, Mitoma C, Hashimoto‐Hachiya A, Takahara M, Tsuji G, Nakahara T, Furue M. Galactomyces
fermentation filtrate prevents T helper 2‐mediated reduction of filaggrin in an aryl hydrocarbon receptor‐dependent manner. Clin Exp Dermatol 2015; 40:786-93. [DOI: 10.1111/ced.12635] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2014] [Indexed: 01/19/2023]
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Kumagai S, Tsuji G, Ichise Y, Umeda R, Uemura Y, Hagiwawa Y, Uga H, Kurata H, Misaki K. OP0153 Validation Study of the Prediction Model for Methotrexate Hepatotoxicity Composed of 13 SNPS Selected by DMET Microarray Profiling in Japanese RA Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kageyama G, Okano T, Yamamoto Y, Sugiyama D, Tsuji G, Tsuda K, Takahashi S, Nishida M, Akashi K, Nishimura K, Sendo S, Kogata Y, Saegusa J, Kawano S, Kumagai S, Morinobu A. SAT0469 Ineffective Fracture Prevention by Bisphosphonate in Patients Undergoing High Dose Glucocorticoid Therapy with A Frax Ten Year Probability Greater than 5.8%. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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56
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Saegusa J, Irino Y, Yoshida M, Tanaka S, Kogata Y, Kageyama G, Tsuji G, Kawano S, Kumagai S, Morinobu A. AB0181 Glutamate as A Metabolic Biomarker for Monitoring Disease Activity of Systemic Lupus Erythematosus. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kumagai S, Tsuji G, Sendo S, Ichise Y, Umeda R, Hagihara Y, Uga H, Kurata H. THU0220 Establishment of a Prediction Model for Hepatotoxicity of Methotrexate by Using Dmet Microarray Profiling in Japanese Patients with Rheumatoid Arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chiba T, Tsuji G, Mitoma H, Takahara M, Moroi Y, Miyamoto T, Furue M. Acquired haemophilia treated successfully with rituximab in a patient with pemphigus vulgaris. Haemophilia 2013; 19:e98-9. [DOI: 10.1111/hae.12087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2012] [Indexed: 01/30/2023]
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Doi I, Tsuji G, Kawakami K, Nakagawa O, Taniguchi Y, Sasaki S. The Spermine–Bisaryl Conjugate as a Potent Inducer of B‐ to Z‐DNA Transition. Chemistry 2010; 16:11993-9. [DOI: 10.1002/chem.201000947] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Fujishima T, Tsuji G, Tanaka C, Harayama H. Novel vitamin D receptor ligands having a carboxyl group as an anchor to arginine 274 in the ligand-binding domain. J Steroid Biochem Mol Biol 2010; 121:60-2. [PMID: 20435140 DOI: 10.1016/j.jsbmb.2010.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 04/13/2010] [Accepted: 04/22/2010] [Indexed: 10/19/2022]
Abstract
Vitamin D3 is metabolized into the hormonally active form, 1alpha,25-dihydroxyvitamin D3 (1), via 25-hydroxyvitamin D3 (2) which is the most abundant circulating metabolite. Introduction of the 1alpha-hydroxyl group into 25-hydroxyvitamin D3 (2) to produce 1alpha,25-dihydroxyvitamin D3 (1) increases the VDR binding affinity by approximately 1000-fold. The X-ray crystal structure of human VDR in complex with 1alpha,25-dihydroxyvitamin D3 (1) shows that, together with Ser-237, the 1alpha-hydroxyl group of 1alpha,25-dihydroxyvitamin D3 (1) makes hydrogen bonds with Arg-274, single mutation of which results in impaired ligand recognition. In 2002, lithocholic acid, which possesses a carboxyl group at position C24, was demonstrated to be a weak VDR ligand. We speculated that the carboxylic acid of lithocholic acid could be recognized by Arg-274 in the ligand-binding domain of VDR. In view of the significance of Arg-274 to direct the 1alpha-hydroxyl group, as well as the results with lithocholic acid and its derivatives, we designed the C2 modified analogues of 25-hydroxylvitamin D3 (2) having a carboxyl group, instead of the 1-hydroxyl group, for better electrostatic interaction to the guanidinium side-chain of arginine.
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Sugiyama D, Nishimura K, Tamaki K, Tsuji G, Nakazawa T, Morinobu A, Kumagai S. Impact of smoking as a risk factor for developing rheumatoid arthritis: a meta-analysis of observational studies. Ann Rheum Dis 2010; 69:70-81. [PMID: 19174392 DOI: 10.1136/ard.2008.096487] [Citation(s) in RCA: 414] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To assess whether smoking is a risk factor for developing rheumatoid arthritis (RA). DESIGN Meta-analysis. METHOD DATA SOURCES were observational studies that examined the association between smoking history and the risk of developing RA identified through Medline and EMBASE (from 1966 to December 2006), relevant books and a reference search. Two authors independently extracted the following: authors' names, publication year, sample size, participant characteristics, odds ratios (OR) or relative risks, adjustment factors, study design and area where the study was conducted. Data syntheses were based upon random effects model. Summarised syntheses effects were expressed by OR. RESULTS Sixteen studies were selected from among 433 articles. For men, summary OR for ever, current and past smokers were 1.89 (95% CI 1.56 to 2.28), 1.87 (1.49 to 2.34) and 1.76 (1.33 to 2.31), respectively. For rheumatoid factor-positive (RF+) RA, summary OR for ever, current and past smokers were 3.02 (2.35 to 3.88), 3.91 (2.78 to 5.50) and 2.46 (1.74 to 3.47), respectively. Summary OR for 20 or more pack-years of smoking was 2.31 (1.55 to 3.41). For women, summary OR for ever, current and past smokers were 1.27 (1.12 to 1.44), 1.31 (1.12 to 1.54) and 1.22 (1.06 to 1.40), respectively. For RF+ RA, summary OR for ever, current and past smokers were 1.34 (0.99 to 1.80), 1.29 (0.94 to 1.77) and 1.21 (0.83 to 1.77). Summary OR for 20 or more pack-years of smoking was 1.75 (1.52 to 2.02). CONCLUSION Smoking is a risk factor for RA, especially RF+ RA men and heavy smokers.
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Koshiba M, Nakamachi Y, Kosaka H, Nakazawa T, Tsuji G, Kumagai S. Modification of cytokine milieu by A2A adenosine receptor signaling--possible application for inflammatory diseases. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2005; 23:1101-6. [PMID: 15571209 DOI: 10.1081/ncn-200027368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pro-inflammatory cytokine TNF-alpha (TNF) production from in vitro lipopolysaccharide (LPS)-stimulated human peripheral blood CD14+ cells (PB-CD14) was inhibited by A2A adenosine receptor (AdoR) (A2AR) or beta2 adrenergic receptor (ADR) (beta2R) signaling in a concentration-dependent manner. These inhibitory effects were presumably mediated by the increase in intracellular cAMP. Furthermore A2AR agonist and beta2R agonist synergistically inhibited the TNF production of LPS-stimulated PB-CD14 cells. These results suggest that the anti-inflammatory effect of extracellular adenosine is, at least in part, due to the modification of the cytokine milieu via A2A signaling, and that the targeting of both A2AR and beta2R may have strong therapeutic potential for the inflammatory diseases.
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Tsuji G, Kenmochi Y, Takano Y, Sweigard J, Farrall L, Furusawa I, Horino O, Kubo Y. Novel fungal transcriptional activators, Cmr1p of Colletotrichum lagenarium and pig1p of Magnaporthe grisea, contain Cys2His2 zinc finger and Zn(II)2Cys6 binuclear cluster DNA-binding motifs and regulate transcription of melanin biosynthesis genes in a developmentally specific manner. Mol Microbiol 2000; 38:940-54. [PMID: 11123670 DOI: 10.1046/j.1365-2958.2000.02181.x] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Colletotrichum lagenarium and Magnaporthe grisea are plant pathogenic fungi that produce melanin during the appressorial differentiation stage of conidial germination and during the late stationary phase of mycelial growth. Here, we report the identification of genes for two unique transcription factors, CMR1 (Colletotrichum melanin regulation) and PIG1 (pigment of Magnaporthe), that are involved in melanin biosynthesis. Both Cmr1p and Pig1p contain two distinct DNA-binding motifs, a Cys2His2 zinc finger motif and a Zn(II)2Cys6 binuclear cluster motif. The presence of both these motifs in a single transcriptional regulatory protein is unique among known eukaryotic transcription factors. Deletion of CMR1 in C. lagenarium caused a defect in mycelial melanization, but not in appressorial melanization. Also, cmr1Delta mutants do not express the melanin biosynthetic structural genes SCD1 and THR1 during mycelial melanization, although the expression of these two genes was not affected during appressorial melanization.
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Fujii I, Mori Y, Watanabe A, Kubo Y, Tsuji G, Ebizuka Y. Enzymatic synthesis of 1,3,6,8-tetrahydroxynaphthalene solely from malonyl coenzyme A by a fungal iterative type I polyketide synthase PKS1. Biochemistry 2000; 39:8853-8. [PMID: 10913297 DOI: 10.1021/bi000644j] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Colletotrichum lagenarium PKS1 gene encoding iterative type I polyketide synthase of 1,3,6,8-tetrahydroxynaphthalene (T4HN) was overexpressed in Aspergillus oryzae. SDS-PAGE analysis of the cell-free extract prepared from the transformant showed an intense band of 230000 which corresponded to the molecular weight of the deduced PKS1 protein. By using this cell-free extract, in vitro synthesis of T4HN was successfully confirmed as the first example of the fungal multi-aromatic ring polyketide synthase activity ever detected. To identify the starter unit for T4HN synthesis, (14)C-labeled acetyl CoA and/or (14)C-labeled malonyl CoA were used as substrates for T4HN synthase reaction. Observed was the incorporation of (14)C label into T4HN solely from malonyl CoA even in the absence of acetyl CoA and not from acetyl CoA. This in vitro result unambiguously identified that malonyl CoA serves as the starter as well as extender units in the formation of T4HN by fungal polyketide synthase PKS1.
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Fujii I, Mori Y, Watanabe A, Kubo Y, Tsuji G, Ebizuka Y. Heterologous expression and product identification of Colletotrichum lagenarium polyketide synthase encoded by the PKS1 gene involved in melanin biosynthesis. Biosci Biotechnol Biochem 1999; 63:1445-52. [PMID: 10501004 DOI: 10.1271/bbb.63.1445] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Colletotrichum lagenarium PKS1 gene was expressed in the heterologous fungal host, Aspergillus oryzae, under the starch-inducible alpha-amylase promoter to identify the direct product of polyketide synthase (PKS) encoded by the PKS1 gene. The main compound produced by an A. oryzae transformant was isolated and characterized to be 1,3,6,8-tetrahydroxynaphthalene (T4HN) as its tetraacetate. Since the PKS1 gene was cloned from C. lagenarium to complement the nonmelanizing albino mutant, T4HN was assumed to be an initial biosynthetic intermediate, and thus the product of the PKS reaction, but had not been isolated from the fungus. The production of T4HN by the PKS1 transformant unambiguously identified the gene to encode a PKS of pentaketide T4HN. In addition, tetraketide orsellinic acid and pentaketide isocoumarin were isolated, the latter being derived from a pentaketide monocyclic carboxylic acid, as by-products of the PKS1 PKS reaction. Production of the pentaketide carboxylic acid provided insights into the mechanism for the PKS1 polyketide synthase reaction to form T4HN.
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Tsuji G. [Strain identification using mandible measurements in Japanese white rabbits]. JIKKEN DOBUTSU. EXPERIMENTAL ANIMALS 1988; 37:493-500. [PMID: 3240789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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