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靭 千恵大学院保健学研究科 保健学専攻講師
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- Statins, such as lovastatin, have been known to inhibit 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase. Statins were reported to moderately suppress hepatitis C virus (HCV) replication in cultured cells harboring HCV RNA replicons. We report here using an HCV cell culture (HCVcc) system that high concentrations of lovastatin (5-20 μg/mL) markedly enhanced the release of HCV infectious particles (virion) in the culture supernatants by up to 40 times, without enhancing HCV RNA replication, HCV protein synthesis, or HCV virion assembly in the cells. We also found that lovastatin increased the phosphorylation (activation) level of extracellular-signal-regulated kinase 5 (ERK5) in both the infected and uninfected cells in a dose-dependent manner. The lovastatin-mediated increase of HCV virion release was partially reversed by selective ERK5 inhibitors, BIX02189 and XMD8-92, or by ERK5 knockdown using small interfering RNA (siRNA). Moreover, we demonstrated that other cholesterol-lowering statins, but not dehydrolovastatin that is incapable of inhibiting HMG-CoA reductase and activating ERK5, enhanced HCV virion release to the same extent as observed with lovastatin. These results collectively suggest that statins markedly enhance HCV virion release from infected cells through HMG-CoA reductase inhibition and ERK5 activation.2024年07月, Microbiology and immunology, 英語, 国際誌[査読有り]研究論文(学術雑誌)
- The coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has necessitated the global development of countermeasures since its outbreak. However, current therapeutics and vaccines to stop the pandemic are insufficient and this is mainly because of the emergence of resistant variants, which requires the urgent development of new countermeasures, such as antiviral drugs. Replicons, self-replicating RNAs that do not produce virions, are a promising system for this purpose because they safely recreate viral replication, enabling antiviral screening in biosafety level (BSL)-2 facilities. We herein constructed three pCC2Fos-based RNA replicons lacking some open reading frames (ORF) of SARS-CoV-2: the Δorf2-8, Δorf2.4, and Δorf2 replicons, and validated their replication in Huh-7 cells. The functionalities of the Δorf2-8 and Δorf2.4 replicons for antiviral drug screening were also confirmed. We conducted puromycin selection following the construction of the Δorf2.4-puro replicon by inserting a puromycin-resistant gene into the Δorf2.4 replicon. We observed the more sustained replication of the Δorf2.4-puro replicon by puromycin pressure. The present results will contribute to the establishment of a safe and useful replicon system for analyzing SARS-CoV-2 replication mechanisms as well as the development of novel antiviral drugs in BSL-2 facilities.2023年09月, Virus research, 334, 199176 - 199176, 英語, 国際誌研究論文(学術雑誌)
- Chronic hepatitis C virus (HCV) infection can lead to liver cirrhosis and hepatocellular carcinoma. Although current medications using direct-acting antivirals (DAAs) are highly effective and well-tolerated for treating patients with chronic HCV, high prices and the existence of DAA-resistant variants hamper treatment. There is thus a need for easily accessible antivirals with different mechanisms of action. During the screening of Indonesian medicinal plants for anti-HCV activity, we found that a crude extract of Dryobalanops aromatica leaves possessed strong antiviral activity against HCV. Bioassay-guided purification identified an oligostilbene, vaticanol B, as an active compound responsible for the anti-HCV activity. Vaticanol B inhibited HCV infection in a dose-dependent manner with 50% effective and cytotoxic concentrations of 3.6 and 559.5 µg/mL, respectively (Selectivity Index: 155.4). A time-of-addition study revealed that the infectivity of HCV virions was largely lost upon vaticanol B pretreatment. Also, the addition of vaticanol B following viral entry slightly but significantly suppressed HCV replication and HCV protein expression in HCV-infected and a subgenomic HCV replicon cells. Thus, the results clearly demonstrated that vaticanol B acted mainly on the viral entry step, while acting weakly on the post-entry step as well. Furthermore, co-treatment of the HCV NS5A inhibitor daclatasvir with vaticanol B increased the anti-HCV effect. Collectively, the present study has identified a plant-derived oligostilbene, vaticanol B, as a novel anti-HCV compound.2023年08月, Biol. Pharm. Bull., 46(8) (8), 1079 - 1087, 英語, 国内誌[査読有り]研究論文(学術雑誌)
- Hepatitis B virus (HBV) is a leading cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma. Current therapeutic drugs for chronic HBV infection use IFN and nucleos(t)ide analogs; however, their efficacy is limited. Thus, there is an urgent need to develop new antivirals for HBV therapy. In this study, we identified a plant-derived polyphenolic bioflavonoid, amentoflavone, as a new anti-HBV compound. Amentoflavone treatment dose-dependently inhibited HBV infection in HBV-susceptible cells with HepG2-hNTCP-C4 and primary human hepatocyte PXB-cells. A mode-of-action study showed that amentoflavone inhibits the viral entry step, but not the viral internalization and early replication processes. Attachment of HBV particles as well as HBV preS1 peptide to HepG2-hNTCP-C4 cells was inhibited by amentoflavone. The transporter assay revealed that amentoflavone partly inhibits uptake of sodium taurocholate cotransporting polypeptide (NTCP)-mediated bile acid. Furthermore, effect of various amentoflavone analogs on HBs and HBe production from HBV-infected HepG2-hNTCP-C4 cells was examined. Robustaflavone exhibited comparable anti-HBV activity to that of amentoflavone and an amentoflavone-7,4', 4‴-trimethyl ether derivative (sciadopitysin) with moderate anti-HBV activity. Cupressuflavone or the monomeric flavonoid apigenin did not exhibit the antiviral activity. Amentoflavone and its structurally related biflavonoids may provide a potential drug scaffold in the design of a new anti-HBV drug inhibitor targeting NTCP.2023年03月, Microbiology and immunology, 英語, 国際誌研究論文(学術雑誌)
- F1000 Research Ltd, 2023年02月, F1000Research, 11, 1452 - 1452
Background: Medicinal plants have been demonstrated to possess various pharmacological effects including anti-hepatitis C virus. Acacia mangium is one of the Acacia genus that contain with various metabolites. The metaboilites play an important role for antiviral activities. The current study examined the anti-hepatitis C virus (HCV) activities of Acacia mangium extracts in solvents with various polarities and further evaluated the mechanism of action of the extracts on the protein virus and combination treatment models.
Methods: Anti-hepatitis C virus activities was conducted by in vitro culture cells of Huh 7it both in a single or combination treatment. Further examined its NS3 protein inhibition was evaluated by western blotting assay.
Results: The results revealed the strong anti-HCV activities of the extracts. The 50% inhibition concentrations (IC50s) of the ethanol, n-hexane, dichloromethane and methanol extracts were of 4.6 ± 0.3, 2.9 ± 0.2, 0.2 ± 0.3, and 2.8 ± 0.2 μg/mL, respectively, and no cytotoxic effect was detected. These extracts displayed stronger effects than the positive control ribavirin. The mode of action of the ethanol extract was evaluated at 30 µg/mL, revealing that the inhibitory effect was stronger on the post-entry step than on the entry step. Western blotting revealed that the extracts decreased NS3 protein expression, indicating that virus replication was suppressed. Further evaluation illustrated that combined treatment with the ethanol extract enhanced the anti-viral activity of simeprevir.
Conclusions: These results indicated that A. mangium leaves could represent sources of anti-HCV agents.
研究論文(学術雑誌) - Springer Science and Business Media LLC, 2021年12月, BMC Complementary Medicine and Therapies, 21(1) (1)
Abstract Background Current therapy of chronic hepatitis C virus (HCV) with direct-acting antivirals (DAAs) has dramatically improved the sustained virologic response (SVR) of affected patients; however, treatment with DAAs remains expensive, and drug-resistant HCV variants remain a threat. As a result, there is still a need to continue to develop affordable and effective drugs for the treatment of HCV. Previously, we have demonstrated that a crude extract fromArtocarpus heterophyllus leaves is a potential anti-HCV candidate. In this study, we have further purified this crude extract, examined which sub-fraction possesses the highest antiviral activity, and then explored its efficacy at different HCV life cycle stages. We also assessed synergistic antiviral effects between theA. heterophyllus extract and commercially available anti-HCV drugs.Methods We used vacuum liquid chromatography (VLC) and high-performance liquid chromatography (HPLC) to fractionate a dichloromethane extract ofA. heterophyllus leaves. We then examined the anti-HCV activity of the fractions using HCV genotype 2a, JFH1a; the antiviral mode of action was determined by exploring adding the treatments at different times. We examined the antiviral effects on the viral entry stage through a virucidal activity test, viral adsorption examination, and pretreatment of cells with the drug. The effects on the post-viral entry stage were determined by the levels of HCV protein expression and HCV RNA expression in infected cells.Results Through activity guided purification, we identified the sub-fraction FR3T3 as possessing the most robust anti-HCV activity with an IC50 value of 4.7 ± 1.0 μg/mL. Mode-of-action analysis revealed that FR3T3 inhibited post-viral entry stages such as HCV NS3 protein expression and HCV RNA replication with marginal effects on the viral entry stage. Thin-layer Chromatography (TLC) indicated that FR3T3 contained terpenoids and chlorophyll-related compounds. We also found a synergistic antiviral activity when the DCM extract ofA. heterohyllus was used in combination therapy with commercial anti-HCV drugs; Ribavirin, Simeprevir, Cyclosporin A.Conclusions The extract ofA. heterophyllus and its sub-fraction, FR3T3, presented here have anti-HCV activities and could be candidate drugs for add-on-therapy for treatment of chronic HCV infections.研究論文(学術雑誌) - Springer Science and Business Media LLC, 2021年12月, BMC Complementary Medicine and Therapies, 21(1) (1)
Abstract Background New agents for developing alternative or complementary medicine to treat the hepatitis C virus (HCV) are still needed due to high rates of HCV infection globally and the current limitations of available treatments. Treatment of HCV with a combination of direct acting antivirals have been shown to be approximately 90% effective but will be limited in the future due to the emergence of drug resistance and high cost. The leaves ofMelicope latifolia have previously been reported to have anti-HCV activity and are a potential source of bioactive compounds for future novel drug development. This study aimed to evaluate the efficacy of the extract ofM. latifolia fruit to treat HCV and to isolate its active compounds.Method M. latifolia fruit was extracted using methanol and purified using vacuum liquid chromatography (VLC) and Radial Chromatography. The anti-HCV activity was analyzed using cell culture lines Huh7it-1 and JFH1 (genotype 2a). Time-of-addition and immunoblotting studies were performed to identify the mode of action of the isolated active compounds. The structures of the active compounds were determined using nuclear magnetic resonance (NMR) spectra, UV, IR, and Mass Spectra.Results Six known compounds were isolated fromM. latifolia fruit: O-methyloktadrenolon, alloevodionol, isopimpinellin, alloxanthoxyletin, methylevodionol, and N-methylflindersine. N-methylflidersine was the most active compound with IC50 value of 3.8 μg/ml while methylevodionol, isopimpinellin, and alloevodionol were less active. O-methyloktadrenolon and alloxanthoxyletin were moderately active with IC50 values of 10.9 and 21.72 μg/ml, respectively. N-methylflidersine decreased level of HCV NS3 protein expression in the cells.Conclusion The alkaloid compound, N-methylflindersine which was isolated fromM. latifolia possesses anti-HCV activity through post-entry inhibition and suppressed NS3 protein expression.研究論文(学術雑誌) - 2020年, Pharmacognosy Journal, 12(5) (5), 1108 - 1114Antiviral activity of Indonesian Medicinal Plants against hepatitis B virus.
- Springer Science and Business Media LLC, 2019年01月, International Journal of Peptide Research and Therapeutics, 26(2) (2), 811 - 821研究論文(学術雑誌)
- Antiviral Activity of Cananga odorata Against Hepatitis BChronic hepatitis B virus (HBV) infection can lead to liver cirrhosis and hepatocellular carcinoma. Current therapeutic drugs for chronic hepatitis B using pegylated interferons and nucleos(t)ide analogs have limited efficacy. Therefore, the development of novel and safe antivirals is required. Natural products including medicinal plants produce complex and structurally diverse compounds, some of which offer suitable targets for antiviral screening studies. In the present study, we screened various crude extracts from Indonesian plants for anti-HBV activity by determining their effects on the production of extracellular HBV DNA in Hep38.7-Tet cells and HBV entry onto a HBV-susceptible cell line, HepG2-NTCP, with the following results: (1) In Hep38.7-Tet cells, Cananga odorata exhibited the highest anti-HBV activity with a 50% inhibitory concentration (IC50) of 56.5 µg/ml and 50% cytotoxic concentration (CC50) of 540.2 µg/ml (Selectivity Index: 9.6). (2) The treatment of HepG2-NTCP cells with Cassia fistula, C. odorata, and Melastoma malabathricum at concentrations of 100 µg/ml lowered the levels of HBsAg production to 51.2%, 58.0%, and 40.1%, respectively, compared to untreated controls, and IC50 and CC50 values of C. odorata were 142.9 µg/ml and >400 µg/ml. In conclusion, the C. odorata extract could be a good candidate for the development of anti-HBV drugs.2019年, Kobe Journal of Medical Sciences, 65(2) (2), E71 - E79, 英語, 国内誌[査読有り]研究論文(学術雑誌)
- 2018年12月, NATURAL PRODUCT COMMUNICATIONS, 13(12) (12), 1579 - 1582Antiviral Activities of Curcuma Genus against Hepatitis C Virus[査読有り]
- 2018年09月, ADVANCED SCIENCE LETTERS, 24(9) (9), 6807 - 6810[査読有り]
- 2018年08月, ADVANCED SCIENCE LETTERS, 24(8) (8), 6265 - 6267[査読有り]
- 2018年05月, BIO-PROTOCOL, 8(10) (10)[査読有り]研究論文(学術雑誌)
- 2018年05月, BIO-PROTOCOL, 8(9) (9)[査読有り]
- 2018年03月, Medical Journal of Indonesia, 27(1) (1), 12 - 18, 英語[査読有り]研究論文(学術雑誌)
- 2017年11月, SCIENTIFIC REPORTS, 7(1) (1), 15931, 英語[査読有り]研究論文(学術雑誌)
- 2017年07月, Asian Pacific Journal of Tropical Biomedicine, 7(7) (7), 633 - 639, 英語[査読有り]研究論文(学術雑誌)
- 2017年, Asian Journal of Pharmaceutical and Clinical Research, 10(7) (7), 164 - 167, 英語Synthesis and anti-hepatitis C virus activity of gallic acid derivatives with chiral center[査読有り]
- 2016年05月, JAPANESE JOURNAL OF INFECTIOUS DISEASES, 69(3) (3), 213 - 220, 英語[査読有り]研究論文(学術雑誌)
- 2016年, MOLECULAR AND CELLULAR LIFE SCIENCES: INFECTIOUS DISEASES, BIOCHEMISTRY AND STRUCTURAL BIOLOGY 2015 CONFERENCE, 18, 169 - 173, 英語[査読有り]研究論文(国際会議プロシーディングス)
- 2016年, MOLECULAR AND CELLULAR LIFE SCIENCES: INFECTIOUS DISEASES, BIOCHEMISTRY AND STRUCTURAL BIOLOGY 2015 CONFERENCE, 18, 179 - 184, 英語[査読有り]研究論文(国際会議プロシーディングス)
- 2015年03月, VIROLOGY JOURNAL, 12(1) (1), 47, 英語[査読有り]研究論文(学術雑誌)
- 2014年12月, FITOTERAPIA, 99, 276 - 283, 英語[査読有り]研究論文(学術雑誌)
- 2014年06月, PLOS ONE, 9(6) (6), e98877, 英語[査読有り]研究論文(学術雑誌)
- 2014年03月, MICROBIOLOGY AND IMMUNOLOGY, 58(3) (3), 180 - 187, 英語[査読有り]研究論文(学術雑誌)
- 2014年03月, MICROBIOLOGY AND IMMUNOLOGY, 58(3) (3), 188 - 194, 英語[査読有り]研究論文(学術雑誌)
- 2014年01月, International Journal of Pharmacy and Pharmaceutical Sciences, 6, 211 - 215[査読有り]
- 2013年08月, VIROLOGY JOURNAL, 10, 259, 英語[査読有り]研究論文(学術雑誌)
- 2012年02月, JOURNAL OF MEDICAL VIROLOGY, 84(2) (2), 229 - 234, 英語[査読有り]研究論文(学術雑誌)
- 2012年01月, MICROBES AND INFECTION, 14(1) (1), 69 - 78, 英語[査読有り]研究論文(学術雑誌)
- 日本細菌学会,日本ウイルス学会, 2011年02月, Microbiol Immunol., 55(2) (2), 135 - 140, 英語[査読有り]研究論文(学術雑誌)
- 2011年02月, MICROBIOLOGY AND IMMUNOLOGY, 55(2) (2), 135 - 140, 英語[査読有り]研究論文(学術雑誌)
- 2010年11月, JOURNAL OF VIROLOGICAL METHODS, 169(2) (2), 380 - 384, 英語研究論文(学術雑誌)
- 2008年12月, BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 377(1) (1), 7 - 11, 英語[査読有り]研究論文(学術雑誌)
- 2006年03月, JOURNAL OF BIOCHEMISTRY, 139(3) (3), 607 - 614, 英語[査読有り]研究論文(学術雑誌)
- 2022年, 甲南女子大学研究紀要2, (16) (16)生薬センソ及びその含有成分ブファリンとガマブフォタリンのC型肝炎ウイルスとデングウイルスに対する抗ウイルス活性
- 2021年, 日本ウイルス学会学術集会プログラム・予稿集(Web), 68thB型肝炎ウイルスcccDNAの生成は抗腫瘍薬ミトキサントロンにより促進される
- 2021年, 日本ウイルス学会学術集会プログラム・予稿集(Web), 68thアメントフラボンのB型肝炎ウイルス感染阻害活性について
- 2016年, Natural Product Communications, 11(8) (8), 1193 - 1200, 英語Promising anti-hepatitis C virus compounds from natural resources[査読有り][招待有り]記事・総説・解説・論説等(学術雑誌)
- 2005年, The 14th International Symposium on Organosilicon Chemistry, 134Syntheses and Biological Assay of a Series of Lacto-N-neotetraose Cluster using Carbosilane Dendrimer Scaffolds
- 2004年11月, GLYCOBIOLOGY, 14(11) (11), 1158 - 1158, 英語Isolation and characterization of glycolipids recognized with dengue virus type 2 from human and mosquito cells研究発表ペーパー・要旨(国際会議)
- 第71回日本ウイルス学会, 2024年11月The multiplex CRISPR/Cas9 system efficiently suppresses HBV gene expression
- 第71回日本ウイルス学会, 2024年11月Butyrolactone IはB型肝炎ウイルスとC型肝炎ウイルスの感染を阻害する
- 第70回日本ウイルス学会, 2023年11月SARS-CoV-2感染におけるサイトカインストーム誘導機構に対する脂質の関与
- 第70回日本ウイルス学会, 2023年11月新型コロナウイルスは肝細胞でアポリポプロテインを利用して増殖する
- 日本薬学会第142年会, 2023年03月新型コロナウイルスは肝細胞でアポリポプロテインBを利用して増殖する口頭発表(一般)
- 日本薬学会第142年会, 2023年03月硫酸単糖型抗デングウイルス薬の合成研究(3)
- 第68回日本ウイルス学会学術集会, 2021年11月, 日本語アメントフラボンのB型肝炎ウイルス感染阻害活性についてポスター発表
- The 11th JSP-CSP-KSP Joint Symposium of Pharmacognosy, 2021年09月, 英語A biflavonoid amentoflavone inhibits hepatitis B virus infectionポスター発表
- HCV2021: The International Symposium on Hepatitis C Virus and Related Viruses, 2021年07月, 英語Methyl-pheophorbide A and porphyrin derivatives inhibit the viral assembly step of hepatitis C virusポスター発表
- 日本薬学会第140年会(京都), 2020年03月新規デングウイルス感染阻害剤の合成(Ⅷ)
- 日本薬学会第140年会(京都), 2020年03月改変型糖鎖誘導体ライブラリーによるデングウイルス感染阻害効果の検討
- 第67回日本ウイルス学会学術集会, 2019年10月, 英語, 国内会議A chlorophyll derivative, methyl-pheophorbide A inhibits hepatitis C virus assembly by affecting apolipoprotein production
- 第67回日本ウイルス学会学術集会, 2019年10月, 英語, 国内会議Antiviral Activity of Steroidal Cardiac Glycosides Obtained from Dried Toad Cake against Hepatitis C Virus
- HBV2019 (International HBV Meeting), 2019年10月, 英語, 国際会議Further analysis of possible antiviral activity of CM-II-sPLA2 against HBV, HCV and HDV
- International Meeting on HCV and Related Viruses 2019, 2019年10月, 英語, 国際会議Potent Anti-HCV Activity of Bufalin and Gamabufotalin Obtained from Dried Toad Cake
- 日本生薬学会第66年会, 2019年09月, 日本語, 国内会議インドネシア原産薬用植物の抗B型肝炎ウイルス活性について
- 第139年回 日本薬学会, 2019年03月, 日本語, 国内会議Methyl-pheophorbide AによるC型肝炎ウイルス感染性粒子形成阻害機構の解析
- 第139年回 日本薬学会, 2019年03月, 英語, 国内会議A crude extract from Cananga odorata exhibits antiviral activity against hepatitis B virus.
- 第139年会 日本薬学会, 2019年03月, 日本語, 国内会議フッ素基導入型デングウイルス感染阻害剤の合成
- 第139年会 日本薬学会, 2019年03月, 日本語, 国内会議動物生薬の抗HCV活性について
- 第63回日本ウイルス会学術集会, 2018年10月, 英語, 国内会議Supporting evidence that the ER/ERGIC is the main budding site for the Hepatitis B virus virion
- 第64回日本ウイルス会学術集会, 2018年10月, 英語, 国内会議Mechanistical study of antiviral activity of snake venom sPLA2 against HBV and HCV
- International Course for Health Sciences Summer Educational Program, 2018年09月, 英語Hepatitis C virus infection and screening research of potential antiviral agents from natural products公開講演,セミナー,チュートリアル,講習,講義等
- 2018 HBV International meeting, 2018年, 英語, 国際会議Comparative analysis of antiviral activity of sPLA2 against HBV and HCV
- 日本薬学会第138年会, 2018年, 日本語, 国内会議新規デングウイルス感染阻害剤の合成(VIII)
- 第25回トガ•フラビ•ペスチウイルス研究会, 2018年, 日本語, 国内会議化合物ライブラリーを用いた抗デングウイルス活性を示す化合物の探索口頭発表(一般)
- 第57回日本薬学会中国四国支部第学術大会, 2018年, 日本語, 国内会議含フッ素デングウイルス感染阻害剤の合成研究口頭発表(一般)
- 第63回日本ウイルス会学術集会, 2017年10月, 英語, 国内会議Chlorophyll-breakdown product, methyl-pheophorbide A inhibits hepatitis C virus infection by suppressing virus assemblyポスター発表
- 日本薬学会第137年会, 2017年03月, 日本語, 仙台, 国内会議Dryobalanops aromatica 葉部からのオリゴスチルベノイド、vaticanol B は C 型 肝炎ウイルスの感染を阻害するポスター発表
- 2017 HBV International meeting, 2017年, 英語, 国際会議Supporting evidence that the ER/ERGIC is the main budding site for the Hepatitis B virus virion
- 24th International Symposium on Hepatitis C Virus and Related Viruses, 2017年, 英語, 国際会議Broad-spectrum Antiviral Phospholipase A2 (PLA2) That Targets the Viral Envelope Lipid Bilayer derived from the ER/ERGIC Membranes
- 23th International Symposium on Hepatitis C Virus and Related Viruses, 2016年10月, 英語, Kyoto, 国際会議Antiviral activities of the scorpine-like peptide Smp 76 isolated from Scorpio maurus palmatus against dengue virus and hapatitis C virus.ポスター発表
- 22th International Symposium on Hepatitis C Virus and Related Viruses, 2015年10月, 英語, 国際会議Cholesterol-lowering statins enhance HCV virion release from infected cells through activation of ERK5ポスター発表
- 第63回日本ウイルス会学術集会, 2015年10月, 英語, 国内会議Lovastatin enhances HCV virion release through activation of ERK5.口頭発表(一般)
- 日本薬学会第135年会, 2015年03月, 英語, 日本薬学会, 神戸, 国内会議Inhibition of hepatitis C virus replication by Chalepin and Pseudane IX isolated from Ruta angustifolia leaves.口頭発表(一般)
- 日本薬学会第135年会, 2015年03月, 日本語, 日本薬学会, 神戸, 国内会議Aspergillus terreus からの精製物質ロバスタチンはC型肝炎ウイルス感染性粒子放出を促進する.口頭発表(一般)
- 第62回日本ウイルス学会学術集会., 2014年11月, 日本語, 日本ウイルス学会, 横浜, 国内会議C型肝炎ウイルス感染によるTGF-βスーパーファミリーにおけるSmad2/3とSmad1/5/9経路の脱制御とその分子機序の解明.口頭発表(一般)
- 第67回日本細菌学会関西支部総会学術集会, 2014年11月, 日本語, 日本細菌学会関西支部, 西宮, 国内会議Aspergillus terreus 抽出液及びその精製物ロバスタチンは高濃度でC型肝炎ウイルス感染性粒子の放出を促進する.口頭発表(一般)
- 21th International Symposium on Hepatitis C Virus and Related Viruses., 2014年09月, 英語, Organising Committee of the 21th International Symposium on Hepatitis C Virus and Related Viruses, Banff, Banff, 国際会議HCV dysregulates Smad2/3- and Smad1/5-signaling pathways of the TGF-β superfamily.ポスター発表
- The 13th Awaji International Forum on Infection and Immunity in Nara., 2014年09月, 英語, The Awaji International Forum on Infection and Immunity, Nara, 国際会議Chalepin and pseudane IX isolated from Ruta angustifolia leaves inhibit hepatitis C virus replication.ポスター発表
- 第61回日本ウイルス学会学術集会, 2013年11月, 日本語, 日本ウイルス学会, 神戸, 国内会議Chlorophill分解産物Pheophorbide a、Chlorin e6及び半合成誘導体Mono-L-aspartyl chlorin e6 (NPe6) はC型肝炎ウイルス増殖を阻害するポスター発表
- 第61回日本ウイルス学会学術集会, 2013年11月, 日本語, 日本ウイルス学会, 神戸, 国内会議Aspergillus terreus 抽出液及びそれに含まれるロバスタチンは高濃度でC型肝炎ウイルス感染性粒子産生を促進する口頭発表(一般)
- 20th International Symposium on Hepatitis C Virus and Related Viruses., 2013年10月, 英語, Organising Committee of the20th International Symposium on Hepatitis C Virus and Related Viruses, Melbourne, Australia, 国際会議Various statins at high concentrations enhance HCV virion release from the infected cellsポスター発表
- 20th International Symposium on Hepatitis C Virus and Related Viruses., 2013年10月, 英語, Organising Committee of the20th International Symposium on Hepatitis C Virus and Related Viruses, Melbourne, Australia, 国際会議Development of a prophylactic and therapeutic vaccine against Hepatitis C virusポスター発表
- 20th International Symposium on Hepatitis C Virus and Related Viruses., 2013年10月, 英語, Organising Committee of the20th International Symposium on Hepatitis C Virus and Related Viruses, Melbourne, Australia, 国際会議Antiviral activity of chlorophyll derivatives, pheophorbide a, chlorin e6 and mono-L-aspartyl chlorin e6 (NPe6), against hepatitis C virusポスター発表
- 日本生薬学会第60回年会, 2013年09月, 日本語, 日本生薬学会, 札幌, 国内会議抗HCV活性を有する薬用植物の探索ポスター発表
- International Conference on Natural Products, 2013年03月, 英語, Organising Committee of the International Conference on Natural ProductsViruses, Shah Alam, Malaysia., Hepatitis C virus (HCV) is a major cause of liver disease worldwide and a potential cause of substantial morbidity and mortality in the future. The most recent WHO estimate of the prevalence of HCV infection is 2%, representing 120 million people. Current standard of care is effective in only 50% of the patients, poorly tolerated, and associated with significant side effects an, 国際会議Antiviral Activity of Indonesian Plants from East Java Region Againts Hepatitis C Virus.口頭発表(一般)
- 第60回日本ウイルス学会学術集会, 2012年11月, 日本語, 日本ウイルス学会, 大阪, 【目的と意義】C型肝炎ウイルス(HCV)慢性感染者は、日本で約200万人、全世界で約1億7,000万~2億人と推定されている。最近認可されたより治療効果の高い三者併用療法でも、30%近い症例で完全治癒が望めず、HCV 治療ワクチンと新たな感染者発生を防止する予防ワクチンの開発が強く求められている。我々は、HCVに対する予防ワクチンと治療ワクチンを開発する目的で、HCVのエンベロープタンパク質及び非構造タンパク質の一部をコードする遺伝子領域を組み込んだ発現プラスミドを数種類作製し、DNAワクチンとしてマウスに接種して、中和抗体産生及び細胞性免疫誘導を検討した。【材料と方法】1)DNAワクチン:HCV(1b型)のエンベロープタンパク質(E2)及び非構造タンパク質の一部(NS3)をコードする遺伝子領域を組み込んだ発現プラスミドを数種類作製した。2)マウス免, 国内会議C型肝炎ウイルスに対する予防および治療ワクチン開発に関する研究口頭発表(一般)
- 19th International Symposium on Hepatitis C Virus and Related Viruses., 2012年10月, 英語, Organising Committee of the19th International Symposium on Hepatitis C Virus and Related Viruses, Venice, Italy, An estimated 170 to 200 million individuals are chronically infected with Hepatitis C virus (HCV) worldwide and 3 to 4 million individuals are newly infected each year. There is currently no vaccine available to protect against HCV. Considering the limited efficacy and high cost of treatment for chronic Hepatitis C, preventive and therapeutic vaccines against HCV are thus much, 国際会議Development of therapeutic and preventive vaccines against Hepatitis C virus.ポスター発表
- 17th International Symposium on Hepatitis C Virus and Related Viruses, 2010年10月, 英語, 国際会議Differential measurement of the number of plus- and minus- RNA molecules of hepatitis C virus in infected cells.
- 17th International symposium on hepatitis C virus and related viruses, 2010年09月, 英語, Organising Committee of the17th International Meeting on Hepatitis C Virus and Related Viruses, Yokohama, Japan, 国際会議Variants of hepatitis C virus JFH-1 strain adapted to Huh7 cells.ポスター発表
- 17th International symposium on hepatitis C virus and related viruses, 2010年09月, 英語, Organising Committee of the17th International Meeting on Hepatitis C Virus and Related Viruses, Yokohama, Japan, 国際会議Differential measurement of the number of plus- and minus- RNA molecules of hepatitis C virus in infected cellsポスター発表
- 16th International Symposium on Hepatitis C Virus and Related Viruses, 2009年10月, 英語, 国際会議Hepatitis C Virus Replicon with Gaussia Luciferase.
- 2009年10月, 日本語, 国内会議Interferon-Induced Protein 44 (IFI44)に関する研究
- The 15th International Symposium on Hepatitis C Virus and Related Viruses, 2008年06月, 英語, 国際会議Anti-HCV activity of interferon-inducible proteins, IFI44/IFI44L.口頭発表(一般)
- International Symposium on Basic and Applied Immunology, 2007年, 国際会議Hepatitis C virus replication in cultured mammalian cells.
- 第53回日本ウイルス学会学術集会, 2005年10月, 日本語, 国内会議デングウイルスエンベロープタンパク質と宿主由来糖鎖分子との相互作用の解析および糖鎖誘導体によるデングウイルス感染阻害効果の検討口頭発表(一般)
- 第52回日本ウイルス学会学術集会, 2004年10月, 日本語, 国内会議デング熱ウイルス結合性糖鎖分子の構造及びその性状解析
- Pharmaceutical Sciences World Congress, 2004年, 国際会議Isolation and characterization Isolation and characterization of carbohydrate molecules recognized with dengue virus from human and mosquito cells.
- 第123回日本薬学会, 2003年03月, 日本語, 国内会議デング熱ウイルス結合性糖鎖分子の構造およびその性状解析ポスター発表
■ 共同研究・競争的資金等の研究課題