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Oizumi S, Sakakibara-Konishi J, Inoue A, Kobayashi K, Gemma A, Yoshizawa H, Isobe H, Saijyo Y, Ishii Y, Morita S, Hagiwara K, Nukiwa T. Randomized Phase II Study of Concurrent Gefitinib Plus Chemotherapy Versus Alternation of Gefitinib and Chemotherapy in Previously Untreated Non-Small Cell Lung Cancer (NSCLC) with Sensitive EGFR Mutations: NEJ005/TCOG0902. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31979-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Ichihara H, Nakamae H, Hirose A, Nakane T, Koh H, Hayashi Y, Nisimoto M, Nakamae M, Terada Y, Koh S, Yoshimura T, Aimoto M, Manabe M, Hagiwara K, Hino M. Immunoglobulin Prophylaxis against Cytomegalovirus Infection in Patients at High Risk Ofinfection Following Allogeneic Hematopoietic Cell Transplantation. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32538-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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53
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Murauchi S, Ludwig WJ, Den N, Hotta H, Asanuma T, Yoshii T, Kubotera A, Hagiwara K. Structure of the Sulu Sea and the Celebes Sea. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb078i017p03437] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Den N, Ludwig WJ, Murauchi S, Ewing M, Hotta H, Asanuma T, Yoshii T, Kubotera A, Hagiwara K. Sediments and structure of the Eauripik-New Guinea Rise. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb076i020p04711] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Murauchi S, Den N, Asano S, Hotta H, Yoshii T, Asanuma T, Hagiwara K, Ichikawa K, Sato T, Ludwig WJ, Ewing JI, Edgar NT, Houtz RE. Crustal structure of the Philippine Sea. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb073i010p03143] [Citation(s) in RCA: 206] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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56
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Den N, Ludwig WJ, Murauchi S, Ewing JI, Hotta H, Edgar NT, Yoshii T, Asanuma T, Hagiwara K, Sato T, Ando S. Seismic-refraction measurements in the Northwest Pacific Basin. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb074i006p01421] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Murauchi S, Ludwig WJ, Den N, Hotta H, Asanuma T, Yoshii T, Kubotera A, Hagiwara K. Seismic refraction measurements on the Ontong Java Plateau northeast of New Ireland. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb078i035p08653] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ludwig WJ, Murauchi S, Den N, Ewing M, Hotta H, Houtz RE, Yoshii T, Asanuma T, Hagiwara K, Sato T, Ando S. Structure of Bowers Ridge, Bering Sea. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb076i026p06350] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Inoue A, Kobayashi K, Maemondo M, Sugawara S, Oizumi S, Isobe H, Gemma A, Harada M, Yoshizawa H, Kinoshita I, Fujita Y, Okinaga S, Hirano H, Yoshimori K, Harada T, Saijo Y, Hagiwara K, Morita S, Nukiwa T. Updated overall survival results from a randomized phase III trial comparing gefitinib with carboplatin-paclitaxel for chemo-naïve non-small cell lung cancer with sensitive EGFR gene mutations (NEJ002). Ann Oncol 2012; 24:54-9. [PMID: 22967997 DOI: 10.1093/annonc/mds214] [Citation(s) in RCA: 402] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND NEJ002 study, comparing gefitinib with carboplatin (CBDCA) and paclitaxel (PTX; Taxol) as the first-line treatment for advanced non-small cell lung cancer (NSCLC) harboring an epidermal growth factor receptor (EGFR) mutation, previously reported superiority of gefitinib over CBDCA/PTX on progression-free survival (PFS). Subsequent analysis was carried out mainly regarding overall survival (OS). MATERIALS AND METHODS For all 228 patients in NEJ002, survival data were updated in December, 2010. Detailed information regarding subsequent chemotherapy after the protocol treatment was also assessed retrospectively and the impact of some key drugs on OS was evaluated. RESULTS The median survival time (MST) was 27.7 months for the gefitinib group, and was 26.6 months for the CBDCA/PTX group (HR, 0.887; P=0.483). The OS of patients who received platinum throughout their treatment (n=186) was not statistically different from that of patients who never received platinum (n=40). The MST of patients treated with gefitinib, platinum, and pemetrexed (PEM) or docetaxel (DOC, Taxotere; n=76) was around 3 years. CONCLUSIONS No significant difference in OS was observed between gefitinib and CBDCA/PTX in the NEJ002 study, probably due to a high crossover use of gefitinib in the CBDCA/PTX group. Considering the many benefits and the risk of missing an opportunity to use the most effective agent for EGFR-mutated NSCLC, the first-line gefitinib is strongly recommended.
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Watanabe S, Yoshizawa H, Maemondo M, Inoue A, Sugawara S, Isobe H, Harada M, Ishii Y, Hagiwara K, Kobayashi K. GEFITINIB for Non-Small Cell Lung Cancer (NSCLC) with Minor EGFR Mutations: A Retrospective Study from the North East Japan Study Group (NEJ). Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33853-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Yamada K, Koyama H, Hagiwara K, Ueda A, Sasaki Y, Kanesashi SN, Ueno R, Nakamura HK, Kuwata K, Shimizu K, Suzuki M, Aida Y. Identification of a novel compound with antiviral activity against influenza A virus depending on PA subunit of viral RNA polymerase. Microbes Infect 2012; 14:740-7. [PMID: 22441116 DOI: 10.1016/j.micinf.2012.02.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 02/27/2012] [Accepted: 02/29/2012] [Indexed: 10/28/2022]
Abstract
Influenza viruses have developed resistance to current drugs, creating a need for new antiviral targets and new drugs to treat influenza virus infections. In this study, computational and experimental screening of an extensive compound library identified THC19, which was able to suppress influenza virus replication. This compound had no cytotoxic effects and did not disrupt cell cycle progression or induce apoptosis in MDCK cells as confirmed by WST-1 assays, flow cytometry analysis, and caspase-3 assays. Time-of-addition experiments showed that THC19 acts at a relatively early stage of the viral lifecycle. Subsequent mini-genome assays revealed that THC19 inhibited viral genome replication and/or transcription, suggesting that it interferes with one or more of the viral components that form the ribonucleoprotein complexes, namely polymerase basic 2 (PB2), polymerase basic 1 (PB1), polymerase acidic (PA), nucleoprotein (NP) and viral RNA. Finally, mini-genome assays where PB2, PB1, PA or NP from A/WSN/33 (H1N1) virus were replaced with those from A/Udorn/307/1972 (H3N2) virus effectively demonstrated that THC19 inhibited viral multiplication in a manner dependent upon the PA subunit. Taken together, these results suggest that influenza virus PA protein is a potential target for, and may aid the development of, novel compounds that inhibit influenza A virus replication.
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Kim S, Jung H, Sung J, Jo U, Kim Y, Shin S, Tanaka T, Hagiwara K, Choi Y. 9136 POSTER Can Serum Be Used for Analyzing the EGFR Mutation Status in Patients With Advanced Non-Small Cell Cancer (NSCLC)? Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72448-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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64
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Ishii H, Koyama H, Hagiwara K, Miura T, Xue G, Hashimoto Y, Kitahara G, Aida Y, Suzuki M. Synthesis and biological evaluation of deoxy-hematoxylin derivatives as a novel class of anti-HIV-1 agents. Bioorg Med Chem Lett 2011; 22:1469-74. [PMID: 22244940 DOI: 10.1016/j.bmcl.2011.06.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 06/15/2011] [Accepted: 06/16/2011] [Indexed: 11/30/2022]
Abstract
SAR studies for the exploration a novel class of anti-human immunodeficiency virus type 1 (HIV-1) agents based on the hematoxylin structure (1) are described. The systematic deoxygenations of 1 including asymmetric synthesis were conducted to obtain a compound showing high potencies for inhibiting the nuclear import and viral replication as anti-HIV-1 agent. Among all, C-3-deoxygenated analog 16 exhibited most promising biological activities as anti-HIV-1 agent such as lower cytotoxicity (16:1; >80:40 μM), stronger inhibition of nuclear import (0.5:1.3 μM), and viral replication in HIV-1-infected TZM-bl cells (24.6:100 μM), human peripheral blood mononuclear cells (PMBCs) (30.1 μM: toxic). Different spectra of inhibitory activities against infected three healthy humans macrophages with high (donor A) and low (donor B and C) amounts of virus were also observed. Thus 16 showed 10-times stronger activity than 1 (16:1; 0.1:<1.0 μM) in the case of A, while 16 and 1 showed comparable activities in the cases of B and C (>0.01 and >0.00 1μM). The comparison of the inhibition of viral p24 antigen production was clearly indicated that compound 16 is at least twofold more potent anti-viral activity than 1. Thus, structures and actions of deoxy analogs particularly 16 could provide valuable information for the development of a novel class of anti-HIV-1 agents.
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Huang M, Sato H, Hagiwara K, Watanabe A, Sugai A, Ikeda F, Kozuka-Hata H, Oyama M, Yoneda M, Kai C. Determination of a phosphorylation site in Nipah virus nucleoprotein and its involvement in virus transcription. J Gen Virol 2011; 92:2133-2141. [PMID: 21613447 PMCID: PMC3353384 DOI: 10.1099/vir.0.032342-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Many viruses use their host’s cellular machinery to regulate the functions of viral proteins. The phosphorylation of viral proteins is known to play a role in genome transcription and replication in paramyxoviruses. The paramyxovirus nucleoprotein (N), the most abundant protein in infected cells, is a component of the N–RNA complex and supports the transcription and replication of virus mRNA and genomic RNA. Recently, we reported that the phosphorylation of measles virus N is involved in the regulation of viral RNA synthesis. In this study, we report a rapid turnover of phosphorylation in the Nipah virus N (NiV-N). The phosphorylated NiV-N was hardly detectable in steady-state cells, but was detected after inhibition of cellular protein phosphatases. We identified a phosphorylated serine residue at Ser451 of NiV-N by peptide mass fingerprinting by electrospray ionization–quadrupole time-of-flight mass spectrometry. In the NiV minigenome assay, using luciferase as a reporter gene, the substitution of Ser451 for alanine in NiV-N resulted in a reduction in luciferase activity of approximately 45 % compared with the wild-type protein. Furthermore, the substitution of Ser451 for glutamic acid, which mimics a phosphoserine, led to a more significant decrease in luciferase activity – approximately 81 %. Northern blot analysis showed that both virus transcription and replication were reduced by these mutations. These results suggest that a rapid turnover of the phosphorylation of NiV-N plays an important role in virus transcription and replication.
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Inoue A, Kobayashi K, Maemondo M, Sugawara S, Oizumi S, Isobe H, Gemma A, Saijo Y, Yoshizawa H, Morita S, Hagiwara K, Nukiwa T. Final overall survival results of NEJ002, a phase III trial comparing gefitinib to carboplatin (CBDCA) plus paclitaxel (TXL) as the first-line treatment for advanced non-small cell lung cancer (NSCLC) with EGFR mutations. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.7519] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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67
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Hirama T, Hagiwara K, Kanazawa M. Tuberculosis screening programme using the QuantiFERON-TB Gold test and chest computed tomography for healthcare workers accidentally exposed to patients with tuberculosis. J Hosp Infect 2011; 77:257-62. [PMID: 21316804 DOI: 10.1016/j.jhin.2010.11.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Accepted: 11/15/2010] [Indexed: 11/28/2022]
Abstract
Healthcare workers (HCWs) have an increased incidence of tuberculosis (TB). Periodic and as-needed screenings of HCWs exposed to patients with TB are important. We integrated chest computed tomography (CT) and the QuantiFERON-TB Gold (QFT-G) test into our TB screening programme for HCWs. First, contacts were tested using the QFT-G test. Those positive for the QFT-G test were investigated by CT and classified as having active, latent (LTBI), or old TB. Between April 2005 and April 2010, 11 patients who had not been diagnosed with active TB on admission were found to have the disease. A total of 512 close or high risk contacts were identified, and underwent screening. Out of those, 34 (6.64%) were QFT-G positive, whereas 478 (93.36%) were negative. Of the 34 QFT-G-positive HCWs, four had CT findings compatible with active TB and received multidrug treatment; 24 showed no findings of active TB and received isoniazid for six months. All completed their regimens without any adverse effects. The TB screening programme integrating CT and the QFT-G test was safe and feasible. The efficacy of the programme needs to be confirmed by large scale clinical trials.
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Shigeto H, Fujii M, Morioka T, Hagiwara K, Kanamori Y, Somehara Y, Takase K, Onitsuka T, Hironaga N, Sakata A, Tobimatsu S, Kira J. P25-20 Patients with posterior basal temporal lobe epileptic discharge revealed by MEG. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61042-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hagiwara K, Okamoto T, Ogata K, Shigeto H, Somehara Y, Tobimatsu S. P33-5 Differential effects of aging on the primary and secondary somatosensory areas: A magnetoencephalographic study. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61224-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ito H, Murakami M, Hagiwara K, Sasaki N, Kobayashi M, Hoshikawa A, Takagi A, Kojima T, Banno Y, Tamiya-Koizumi K, Nakamura M, Nozawa Y, Murate T. The regulatory mechanism of NSMase2 gene expression by ATRA in MCF7 cells. Chem Phys Lipids 2010. [DOI: 10.1016/j.chemphyslip.2010.05.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Miyazaki N, Hagiwara K, Wei T, Chen H, Nakagawa A, Xing L, Cheng RH, Omura T. Outer-capsid P8 proteins of phytoreoviruses mediate secretion of assembled virus-like particles from insect cells. J Gen Virol 2010; 91:2857-61. [PMID: 20631088 DOI: 10.1099/vir.0.022012-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Phytoreoviruses are composed of two concentric capsid layers that surround a viral genome. The capsids are formed mainly by the inner-capsid P3 protein and the outer-capsid P8 protein. During the infection of insect-vector cells, these play important roles in packaging the viral genome and the enzymes required for its transcription. P3 and P8 proteins, when co-expressed in Spodoptera frugiperda cells, co-localized in cells and were released as spherical clusters. In contrast P3 proteins expressed in the absence of P8 protein were associated with the cells when they were examined by confocal microscopy. Cryo-electron microscopy revealed that the secreted clusters, composed of P3 and P8 proteins, were double-layered virus-like particles that were indistinguishable from intact viral particles. Our results indicate that P8 proteins mediate the secretion of assembled virus-like particles from S. frugiperda insect cells and, therefore, most probably from insect-vector cells also.
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Minegishi Y, Maemondo M, Okinaga S, Morikawa N, Inoue A, Kobayashi K, Harada M, Hagiwara K, Nukiwa T, Gemma A. First-line gefitinib therapy for elder advanced non-small cell lung cancer patients with epidermal growth factor receptor mutations: Multicenter phase II trial (NEJ 003 study). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7561] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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73
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Inoue A, Maemondo M, Kobayashi K, Oizumi S, Isobe H, Gemma A, Saijo Y, Hagiwara K, Morita S, Nukiwa T. The efficacy of low-dose gefitinib for advanced non-small cell lung cancer (NSCLC) with sensitive epidermal growth factor receptor (EGFR) mutations: A post-hoc analysis from NEJ002. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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74
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Soda M, Inoue A, Isobe K, Miyazawa H, Tanaka T, Takeuchi K, Ishikawa Y, Kobayashi K, Hagiwara K, Mano H. A Japanese nationwide network for the diagnosis of EML4-ALK-positive lung cancer: A joint study of ALCAS and NEJ004. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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75
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Hagiwara K, Kondoh Y, Ueda A, Yamada K, Goto H, Watanabe T, Nakata T, Osada H, Aida Y. Discovery of novel antiviral agents directed against the influenza A virus nucleoprotein using photo-cross-linked chemical arrays. Biochem Biophys Res Commun 2010; 394:721-7. [DOI: 10.1016/j.bbrc.2010.03.058] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Accepted: 03/09/2010] [Indexed: 01/17/2023]
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