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Jayakumar R, Ramachandran R, Divyarani VV, Chennazhi KP, Tamura H, Nair SV. Corrigendum to "Fabrication of chitin-chitosan/nano TiO 2-composite scaffolds for tissue engineering applications" [Int. J. Biol. Macromol. 48 (2011) 336-344]. Int J Biol Macromol 2019; 135:1285-1287. [PMID: 31256977 DOI: 10.1016/j.ijbiomac.2019.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- R Jayakumar
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
| | - Roshni Ramachandran
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - V V Divyarani
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - K P Chennazhi
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - H Tamura
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, Osaka 564-8680, Japan
| | - S V Nair
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
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Jayakumar R, Ramachandran R, Kumar PTS, Divyarani VV, Srinivasan S, Chennazhi KP, Tamura H, Nair SV. Corrigendum to "Fabrication of chitin-chitosan/nano ZrO 2 composite scaffolds for tissue engineering applications" [Int. J. Biol. Macromol. 49 (2011) 274-280]. Int J Biol Macromol 2019; 135:1283-1284. [PMID: 31255323 DOI: 10.1016/j.ijbiomac.2019.06.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- R Jayakumar
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
| | - Roshni Ramachandran
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - P T Sudheesh Kumar
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - V V Divyarani
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - Sowmya Srinivasan
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - K P Chennazhi
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - H Tamura
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, Osaka 564-8680, Japan
| | - S V Nair
- Amrita Centre for Nanosciences, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
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Shalumon KT, Anulekha KH, Chennazhi KP, Tamura H, Nair SV, Jayakumar R. Corrigendum to "Fabrication of chitosan/poly(caprolactone) nanofibrous scaffold for bone and skin tissue engineering" [Int. J. Biol. Macromol. 48 (2011) 571-576]. Int J Biol Macromol 2019; 134:1217. [PMID: 31076183 DOI: 10.1016/j.ijbiomac.2019.04.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K T Shalumon
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Viswa Vidyapeetham, Kochi 682 041, India
| | - K H Anulekha
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Viswa Vidyapeetham, Kochi 682 041, India
| | - K P Chennazhi
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Viswa Vidyapeetham, Kochi 682 041, India
| | - H Tamura
- Faculty of Chemistry, Materials and Bioengineering and High Technology Research Centre, Kansai University, Osaka 564-8680, Japan
| | - S V Nair
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Viswa Vidyapeetham, Kochi 682 041, India.
| | - R Jayakumar
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Amrita Viswa Vidyapeetham, Kochi 682 041, India.
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Hara H, Fukuoka S, Takahashi N, Kojima T, Kawazoe A, Asayama M, Yoshii T, Kotani D, Tamura H, Mikamoto Y, Sugama A, Wakabayashi M, Nomura S, Sato A, Togashi Y, Nishikawa H, Shitara K. Regorafenib plus nivolumab in patients with advanced colorectal or gastric cancer: an open-label, dose-finding, and dose-expansion phase 1b trial (REGONIVO, EPOC1603). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz157.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Funakoshi-Tago M, Tsuruya R, Ueda F, Ishihara A, Kasahara T, Tamura H, Tago K. Tyrosine-phosphorylated SOCS3 negatively regulates cellular transformation mediated by the myeloproliferative neoplasm-associated JAK2 V617F mutant. Cytokine 2019; 123:154753. [PMID: 31255914 DOI: 10.1016/j.cyto.2019.154753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 04/11/2019] [Revised: 05/31/2019] [Accepted: 06/07/2019] [Indexed: 01/30/2023]
Abstract
In the majority of myeloproliferative neoplasms (MPNs) patients, a point mutation, V617F has been found in Janus kinase 2 (JAK2) gene, and this JAK2 mutant provoked aberrant signaling pathway. In the current study, we found that suppressor of cytokine signaling proteins 3 (SOCS3) possessed the tumor suppressive activity against the JAK2 V617F mutant-provoked cellular transformation. The knockdown of SOCS3 increased the expression level of the JAK2 V617F mutant, which enhanced the activation of signaling mediators, including signal transducer and activator of transcription 3 and 5 (STAT3, STAT5) and extracellular signal-regulated kinase (ERK), and also increased of the proliferation rate and tumorigenesis activity of Ba/F3 cells expressing the JAK2 V617F mutant and erythropoietin receptor (EpoR). In contrast, the enforced expression of SOCS3 significantly inhibited the JAK2 V617F mutant-induced activation of downstream signaling molecules, cell proliferation, and tumorigenesis by down-regulating the expression level of the JAK2 V617F mutant. SOCS3 interacted with the JAK2V617F mutant through its SH2 domain and was phosphorylated at Tyr-204 and Tyr-221 in its SOCS box by the JAK2V617F mutant. SOCS3 mutants carrying a mutation in the SH2 domain (R71E) and a substitution at Tyr-221 (Y221F) failed to exert inhibitory effects on JAK2V617F mutant-induced cellular transformation and tumorigenesis. Collectively, these results imply that SOCS3 plays a negative role in the JAK2 V617F mutant-induced oncogenic signaling pathway through its SH2 domain and the phosphorylation of Tyr-221 in its SOCS box.
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Affiliation(s)
- Megumi Funakoshi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Rina Tsuruya
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Fumihito Ueda
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Aki Ishihara
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Tadashi Kasahara
- International University of Health and Welfare, Graduate School, 1-3-3 Minamiaoyama, Minato-ku, Tokyo 107-0062, Japan
| | - Hiroomi Tamura
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan.
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Usui K, Kadono N, Furuichi Y, Shiraga K, Saitou T, Kawasaki H, Toyooka K, Tamura H, Kubo A, Amagai M, Matsui T. 3D in vivo imaging of the keratin filament network in the mouse stratum granulosum reveals profilaggrin-dependent regulation of keratin bundling. J Dermatol Sci 2019; 94:346-349. [PMID: 31167711 DOI: 10.1016/j.jdermsci.2019.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 04/24/2019] [Accepted: 04/26/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Keiko Usui
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Nanako Kadono
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; KOSÉ Endowed Course for Skin Care and Allergy Prevention II, The Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Yuki Furuichi
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Keiichiro Shiraga
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Takashi Saitou
- Translational Research Center, Ehime University Hospital, Toon, Japan
| | - Hiroshi Kawasaki
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan; Disease Biology Group, RIKEN Medical Sciences Innovation Hub Program, Yokohama, Japan
| | - Kiminori Toyooka
- Mass Spectrometry and Microscopy Unit, RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Hiroomi Tamura
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Akiharu Kubo
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Masayuki Amagai
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan; Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Takeshi Matsui
- Laboratory for Skin Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.
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Nakazawa Y, Ishimori N, Oguchi J, Nagai N, Kimura M, Funakoshi-Tago M, Tamura H. Coffee brew intake can prevent the reduction of lens glutathione and ascorbic acid levels in HFD-fed animals. Exp Ther Med 2019; 17:1420-1425. [PMID: 30680023 PMCID: PMC6327644 DOI: 10.3892/etm.2018.7092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 07/06/2018] [Accepted: 12/05/2018] [Indexed: 12/17/2022] Open
Abstract
The lens has high concentrations of glutathione (GSH) and ascorbic acid (AsA) to maintain redox activity and prevent cataract formation, which is the leading cause of visual impairment worldwide. Metabolic syndrome is reported to be linked with a higher risk of age-associated cataract. As it was demonstrated previously that coffee consumption improved high-fat diet (HFD) -induced metabolic symptoms, it was hypothesized that coffee intake could delay the onset of obesity related-cataract; however, the effect of coffee consumption on this type of cataract remains unknown. Four-week-old male C57BL/6JJms SLC mice were divided into two groups and were provided ad libitum access to either a control diet (control groups) or a HFD (HFD groups). The control groups and HFD groups were further divided into three or four subgroups for each experiment. Coffee intake markedly reduced the increase in body weight in a roasting-time and concentration-dependent manner. Coffee consumption also prevented the HFD-induced decrease in the concentration of GSH and AsA, and treatment with pyrocatechol or caffeine also restored the reduction of antioxidant compounds. Plasma cholesterol and triglycerides were significantly higher in HFD groups; however, coffee brew or coffee constituent treatment in the HFD-fed mice group prevented elevation of these levels. Caffeine is a major coffee component and pyrocatechol is generated thought the roasting process. These results revealed that caffeine and pyrocatechol in coffee brew may be the key constituents responsible for preventing the reduction of lens GSH and AsA in HFD-fed animals.
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Affiliation(s)
- Yosuke Nakazawa
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
| | - Nana Ishimori
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
| | - Jun Oguchi
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
| | - Noriaki Nagai
- Department of Advanced Design for Pharmaceuticals, Faculty of Pharmacy, Kindai University, Osaka 577-8502, Japan
| | - Masaki Kimura
- Division of Pharmacotherapeutics, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
| | - Megumi Funakoshi-Tago
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
| | - Hiroomi Tamura
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
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Hiragi S, Goto R, Tanaka Y, Matsuyama Y, Sawada A, SakaI K, Miyata H, Tamura H, Yanagita M, Kuroda T, Ogawa O, Kobayashi T. Estimating the Net Utility Gains Among Donors and Recipients of Adult Living Donor Kidney Transplant. Transplant Proc 2019; 51:676-683. [PMID: 30979450 DOI: 10.1016/j.transproceed.2019.01.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 01/15/2019] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Living donor kidney transplant relieves the disease burden of patients with end-stage renal disease but may shorten donor life expectancy; however, their quality of life (QOL) is preserved. Nevertheless, the magnitude of the net gain of this procedure is unknown. We evaluated the QOL of both donors and recipients concurrently and calculated the net utility gain. METHODS We recruited 210 subjects who visited the kidney transplantation clinic of a university hospital. Subjects were asked to complete the 5-level EQ-5D-based questionnaire, and patient characteristics were extracted from their medical records. We performed multivariate tobit models analysis to evaluate the QOL change caused by transplant surgery and subsequently ran computational simulations to determine the net utility gains of donors and recipients. We also performed sensitivity analyses. RESULTS After excluding 16 answers with missing data, we analyzed 203 answers in total. After the transplant surgery, recipients gained 0.07 in utility value while donors lost 0.04. In the net utility analysis, we found that the quality-adjusted life years gained ranged from 7.2 to 7.8 in the most favorable case observed in the combination of middle-aged recipients and elderly donors. Assuming no utility discount, the most favorable combination was that with older donors and younger recipients. CONCLUSIONS These findings indicated that the QOL improvement in recipients was larger than the loss among donors. When calculating the net utilities, a combination of middle-aged recipients and elderly donors yielded the largest net utility, but this was likely derived from assumption in the discount of QOL.
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Affiliation(s)
- S Hiragi
- Division of Medical Informatics and Administration Planning, Kyoto University Hospital, Kyoto, Japan; Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - R Goto
- Graduate School of Business Administration, Keio University, Kanagawa, Japan; Keio Business School, Keio University, Kanagawa, Japan
| | - Y Tanaka
- Division of Nursing, Kyoto University Hospital, Kyoto, Japan
| | - Y Matsuyama
- Division of Nursing, Kyoto University Hospital, Kyoto, Japan
| | - A Sawada
- Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K SakaI
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Miyata
- Kyoto-Katsura Hospital, Kyoto, Japan
| | - H Tamura
- Center for Innovative Research and Education in Data Science, Institute for Liberal Arts and Sciences, Kyoto University, Kyoto, Japan
| | - M Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Kuroda
- Division of Medical Informatics and Administration Planning, Kyoto University Hospital, Kyoto, Japan
| | - O Ogawa
- Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
| | - T Kobayashi
- Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Sakakura A, Pauze M, Namiki A, Funakoshi-Tago M, Tamura H, Hanaya K, Higashibayashi S, Sugai T. Chemoenzymatic synthesis of hydroxytyrosol monoesters and their suppression effect on nitric oxide production stimulated by lipopolysaccharides. Biosci Biotechnol Biochem 2018; 83:185-191. [PMID: 30319060 DOI: 10.1080/09168451.2018.1530970] [Citation(s) in RCA: 1] [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] [Indexed: 10/28/2022]
Abstract
Fatty acid monoesters of hydroxytyrosol [2-(3,4-dihydroxyphenyl)ethanol] were synthesized in two steps from tyrosol (4-hydroxyphenylethanol) by successive Candida antarctica lipase B-catalyzed chemoselective acylation on the primary aliphatic hydroxy group over phenolic hydroxy group in tyrosol, and 2-iodoxybenzoic acid (IBX)-mediated hydroxylation adjacent to the remaining free phenolic hydroxy group. Examination of their suppression effects on nitric oxide production stimulated by lipopolysaccharides in RAW264.7 cells showed that hydroxytyrosol butyrate exhibited the highest inhibition (IC50 7.0 μM) among the tested compounds.
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Affiliation(s)
| | - Martin Pauze
- a Faculty of Pharmacy , Keio University , Tokyo , Japan.,b Department of Chemistry , Graduate School of SIGMA Clermont , Aubiere Cedex , France
| | | | | | | | - Kengo Hanaya
- a Faculty of Pharmacy , Keio University , Tokyo , Japan
| | | | - Takeshi Sugai
- a Faculty of Pharmacy , Keio University , Tokyo , Japan
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Nakamura T, Ikeda M, Shibata S, Kon Y, Konuma K, Sanada T, Gonda H, Suto Y, Kobayashi K, Tamura H, Kobayashi M, Hasegawa A, Amagasa Y, Suzuki A, Fukuda M, Aoyagi C, Matsuura N, Kawashima Y, Shimura M, Takita N. Malignant lymphoma detected by screening program with esophagogastroduodenoscopy of one private screening center in Japan. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy297.037] [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: 11/14/2022] Open
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61
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Fukuyama K, Kakio S, Nakazawa Y, Kobata K, Funakoshi-Tago M, Suzuki T, Tamura H. Roasted Coffee Reduces β-Amyloid Production by Increasing Proteasomal β-Secretase Degradation in Human Neuroblastoma SH-SY5Y Cells. Mol Nutr Food Res 2018; 62:e1800238. [PMID: 30144352 DOI: 10.1002/mnfr.201800238] [Citation(s) in RCA: 16] [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] [Received: 03/08/2018] [Revised: 06/29/2018] [Indexed: 12/25/2022]
Abstract
SCOPE Epidemiological studies have shown that coffee consumption may be associated with a lower risk of developing several neurological disorders, including Alzheimer's disease (AD). Caffeine is a prominent candidate component underlying the preventive effects of coffee; however, the contribution of other constituents is unclear. To clarify this issue, the effect of roasting coffee beans on β-secretase (BACE1) expression in human neuroblastoma SH-SY5Y cells is investigated. METHODS AND RESULTS Coffee (2%) reduces Aβ accumulation in culture medium to 80% of control levels after 24 h. Accordingly, BACE1 expression is decreased to 70% of control levels at 12 h. Experiments using cycloheximide and MG132, a proteasome inhibitor, reveal that coffee enhanced BACE1 degradation through activation of proteasomal activity. Furthermore, coffee activates cAMP-dependent protein kinase, and consequently, phosphorylation of a serine residue of proteasome 26S subunit, non-ATPase 11 (PSMD11). Pyrocatechol, a strong antioxidant known as catechol or 1,2-dihydroxybenzene, produced from chlorogenic acid during roasting, also reduces BACE1 expression by activation of proteasomal activity. Furthermore, pyrocatechol reduces Aβ production in SH-SY5Y cells. CONCLUSION The data suggest that the roasting process may be crucial for the protective effects of coffee consumption in AD.
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Affiliation(s)
- Kazuya Fukuyama
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
| | - Shota Kakio
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
| | - Yosuke Nakazawa
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
| | - Kenji Kobata
- Department of Pharmaceutical and Health Sciences, Josai University, Saitama, Japan
| | | | - Toshiharu Suzuki
- Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
| | - Hiroomi Tamura
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo, 105-8512, Japan
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Sugino N, Maekawa R, Tamura H. The role of SATB2 and NRG1 as upstream regulatory genes in uterine leiomyomas. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.411] [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: 10/28/2022]
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63
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Maekawa R, Tamura H, Sugino N. Detection and functional analysis of HOXC8 as an upstream regulatory gene in ovarian endometrioma. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1092] [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: 11/30/2022]
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64
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65
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Tsuchiya H, Otaki Y, Watanabe T, Yamaura G, Hashimoto N, Wanezaki M, Tamura H, Nishiyama S, Arimoto T, Takahashi H, Shishido T, Kubota I, Watanabe M. P6351Direct comparison of prognostic ability of BNP and NT-proBNP for cardiogenic stroke and clinical outcome in patients with stroke. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Tsuchiya
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - Y Otaki
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - T Watanabe
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - G Yamaura
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - N Hashimoto
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - M Wanezaki
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - H Tamura
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - S Nishiyama
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - T Arimoto
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - H Takahashi
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - T Shishido
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - I Kubota
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
| | - M Watanabe
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, Yamagata, Japan
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Kinoshita D, Shishido T, Takahashi T, Sugai T, Narumi T, Otaki Y, Tamura H, Nishiyama S, Takahashi T, Arimoto T, Miyamoto T, Watanabe T, Watanabe M. P1860Contribution of surface nucleolin to vascular remodeling of pulmonary arterial hypertension. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D Kinoshita
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Shishido
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Takahashi
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Sugai
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Narumi
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - Y Otaki
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - H Tamura
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - S Nishiyama
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Takahashi
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Arimoto
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Miyamoto
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - T Watanabe
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
| | - M Watanabe
- Yamagata University, Department of Cardiology, Pulmonology, and Nephrology, Yamagata, Japan
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67
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Funakohi-Tago M, Sakata T, Fujiwara S, Sakakura A, Sugai T, Tago K, Tamura H. Hydroxytyrosol butyrate inhibits 6-OHDA-induced apoptosis through activation of the Nrf2/HO-1 axis in SH-SY5Y cells. Eur J Pharmacol 2018; 834:246-256. [PMID: 30053409 DOI: 10.1016/j.ejphar.2018.07.043] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 06/20/2018] [Revised: 07/17/2018] [Accepted: 07/23/2018] [Indexed: 12/30/2022]
Abstract
Hydroxytyrosol (HT) is a polyphenol contained in olives and exhibits antioxidant activity. We herein investigated the effects of HT and its derivatives, hydroxytyrosol acetate (HT-A) and hydroxytyrosol butyrate (HT-B), on the protection of neuronal cells against apoptosis induced by the Parkinson's disease-related neurotoxin 6-hydroxydopamine (6-OHDA). The pretreatment of SH-SY5Y cells with HT-B, but not HT or HT-A significantly reduced the 6-OHDA-induced generation of reactive oxygen species, activation of caspase-3, and subsequent cell death. HT-B also induced the protein expression of the transcription factor, NF-E2-related factor-2 (Nrf2) and its transcriptional activation, resulting in the up-regulated expression of heme oxygenase-1 (HO-1), which conferred neuroprotection against 6-OHDA-induced oxidative damage. Furthermore, three cysteine residues, Cys151, Cys273, and Cys288 in Kelch-like ECH-associated protein 1 (Keap1) were necessary for the HT-B-induced activation of Nrf2. Collectively, the present results demonstrated that HT-B, harboring higher fat solubility than HT and HT-A, effectively elicited adaptive responses to oxidative stress by activating the Nrf2/HO-1 axis in neuronal cells.
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Affiliation(s)
- Megumi Funakohi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Tomoki Sakata
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Satoru Fujiwara
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Ayaka Sakakura
- Division of Organic and Biocatalytic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Takeshi Sugai
- Division of Organic and Biocatalytic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Hiroomi Tamura
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
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68
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Kawazoe A, Takahari D, Nakamura Y, Suzuki M, Tamura H, Fukutani M, Hasegawa H, Yano M, Wakabayashi M, Nomura S, Sato A, Shitara K. A multicenter phase II study of TAS-114 in combination with S-1 in patients with pre-treated advanced gastric cancer (EPOC1604): Interim analysis in the first stage. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.069] [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: 11/15/2022] Open
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69
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Nakazawa Y, Pauze M, Fukuyama K, Nagai N, Funakoshi-Tago M, Sugai T, Tamura H. Effect of hesperetin derivatives on the development of selenite‑induced cataracts in rats. Mol Med Rep 2018; 18:1043-1050. [PMID: 29845214 DOI: 10.3892/mmr.2018.9045] [Citation(s) in RCA: 5] [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] [Received: 01/17/2018] [Accepted: 05/15/2018] [Indexed: 11/05/2022] Open
Abstract
Cataracts are a major cause of blindness worldwide. As anti‑cataract pharmaceutical therapies require long‑term treatment, identifying anti‑cataract compounds that are ubiquitous in the human diet, have no adverse effects and are affordable, is of paramount importance. The present study focused on hesperetin and its derived compounds, hesperetin stearic acid ester (Hes‑S) and hesperetin oleic acid ester (Hes‑O), in order to investigate their therapeutic potential to treat cataracts in a selenite animal model. Thirteen‑day‑old Sprague Dawley rats were divided into 12 groups. Animals in groups 1 and 7 were subcutaneously injected with vehicle, those in groups 2 and 8 were administered hesperetin, those in groups 3 and 9 received stearic acid, those in groups 4 and 10 were injected with oleic acid, those in groups 5 and 11 were administered Hes‑S, and those in groups 6 and 12 received Hes‑O (10 nmol/kg body weight on days 0, 1 and 2). Animals in groups 7 to 12 were treated with sodium selenite (20 µmol/kg body weight given 4 h following the test compound treatment on day 0) to induce cataract. On day 6, rats had less severe central opacities and lower stage cataracts than rats in the selenite treatment‑only control groups. The levels of glutathione (GSH) and ascorbic acid (AsA) in lenses with selenite‑induced cataracts declined to one‑third of that of controls, and the reduction in GSH and AsA levels was rescued following hesperetin, Hes‑S or Hes‑O treatment, with concentrations remaining to 70‑80% of that of controls. However, there were no changes in the plasma levels of GSH and AsA following treatments. Administration of either hesperetin or hesperetin‑derived compounds prevented the reduction of chaperone activity in the lens, and rats treated with Hes‑S or Hes‑O treatment had significantly greater chaperone activity than hesperetin‑treated rats. Collectively, these results suggested that hesperetin and hesperetin‑derived compounds may be novel drug compounds that have the potential to prevent or delay the onset of cataracts.
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Affiliation(s)
| | - Martin Pauze
- Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | | | - Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Osaka 577‑8502, Japan
| | | | - Takeshi Sugai
- Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
| | - Hiroomi Tamura
- Faculty of Pharmacy, Keio University, Tokyo 105‑8512, Japan
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70
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Uchihara Y, Kidokoro T, Tago K, Mashino T, Tamura H, Funakoshi-Tago M. A major component of vitamin E, α-tocopherol inhibits the anti-tumor activity of crizotinib against cells transformed by EML4-ALK. Eur J Pharmacol 2018; 825:1-9. [PMID: 29444468 DOI: 10.1016/j.ejphar.2018.02.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 11/22/2017] [Revised: 02/09/2018] [Accepted: 02/09/2018] [Indexed: 10/18/2022]
Abstract
Crizotinib is an inhibitor of anaplastic lymphoma kinase (ALK) and is of significant therapeutic benefit to patients with non-small cell lung cancer (NSCLC) harboring the EML4-ALK fusion gene. In the present study, we demonstrated that α-tocopherol, a major component of vitamin E, attenuated the effects of crizotinib independently of its anti-oxidant properties. α-Tocopherol significantly inhibited crizotinib-induced apoptosis in cells transformed by EML4-ALK. It also effectively attenuated the crizotinib-induced inhibition of EML4-ALK and its downstream molecules, STAT3 and ERK, and suppressed the inhibitory effects of crizotinib on EML4-ALK-mediated transformation in the focus formation assay. On the other hand, other members of the vitamin E family, namely, β-tocopherol, γ-tocopherol, δ-tocopherol, and α-tocotrienol, and a water-soluble analog of vitamin E, Trolox had no effects on the anti-tumor activity of crizotinib in cells transformed by EML4-ALK. Collectively, these results revealed the risk of the anti-tumor activity of crizotinib being attenuated when it is administrated in combination with vitamin E supplements containing α-tocopherol as a major component.
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Affiliation(s)
- Yuki Uchihara
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Takayuki Kidokoro
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Tadahiko Mashino
- Division of Medicinal Chemistry and Bio-organic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Hiroomi Tamura
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Megumi Funakoshi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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71
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Hata A, Suzuki H, Oeda H, Nishii K, Kaiho T, Ohashi K, Shiina Y, Sata Y, Toyoda T, Sakairi Y, Tamura H, Fujiwara T, Wada H, Nakajima T, Yamada Y, Chiyo M, Yoshino I. Gene Expression Profiling in Murine Orthotopic Lung Transplantation Model of Chronic Lung Allograft Dysfunction (CLAD). J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.494] [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: 10/17/2022] Open
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72
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Yang SB, Ahn JK, Akazawa Y, Aoki K, Chiga N, Ekawa H, Evtoukhovitch P, Feliciello A, Fujita M, Hasegawa S, Hayakawa S, Hayakawa T, Honda R, Hosomi K, Hwang SH, Ichige N, Ichikawa Y, Ikeda M, Imai K, Ishimoto S, Kanatsuki S, Kim SH, Kinbara S, Kobayashi K, Koike T, Lee JY, Miwa K, Moon TJ, Nagae T, Nakada Y, Nakagawa M, Ogura Y, Sakaguchi A, Sako H, Sasaki Y, Sato S, Shirotori K, Sugimura H, Suto S, Suzuki S, Takahashi T, Tamura H, Tanida K, Togawa Y, Tsamalaidze Z, Ukai M, Wang TF, Yamamoto TO. First Determination of the Level Structure of an sd-Shell Hypernucleus, _{Λ}^{19}F. Phys Rev Lett 2018; 120:132505. [PMID: 29694189 DOI: 10.1103/physrevlett.120.132505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/15/2018] [Indexed: 06/08/2023]
Abstract
We report on the first observation of γ rays emitted from an sd-shell hypernucleus, _{Λ}^{19}F. The energy spacing between the ground state doublet, 1/2^{+} and 3/2^{+} states, of _{Λ}^{19}F is determined to be 315.5±0.4(stat)_{-0.5}^{+0.6}(syst) keV by measuring the γ-ray energy of the M1(3/2^{+}→1/2^{+}) transition. In addition, three γ-ray peaks are observed and assigned as E2(5/2^{+}→1/2^{+}), E1(1/2^{-}→1/2^{+}), and E1(1/2^{-}→3/2^{+}) transitions. The excitation energies of the 5/2^{+} and 1/2^{-} states are determined to be 895.2±0.3(stat)±0.5(syst) and 1265.6±1.2(stat)_{-0.5}^{+0.7}(syst) keV, respectively. It is found that the ground state doublet spacing is well described by theoretical models based on existing s- and p-shell hypernuclear data.
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Affiliation(s)
- S B Yang
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - J K Ahn
- Department of Physics, Korea University, Seoul 02841, Korea
| | - Y Akazawa
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - K Aoki
- Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - N Chiga
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - H Ekawa
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - P Evtoukhovitch
- Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia
| | - A Feliciello
- INFN, Sezione di Torino, via P. Giuria 1, 10125 Torino, Italy
| | - M Fujita
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - S Hasegawa
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - S Hayakawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Hayakawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Honda
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - K Hosomi
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - S H Hwang
- Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea
| | - N Ichige
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Y Ichikawa
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - M Ikeda
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - K Imai
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - S Ishimoto
- Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - S Kanatsuki
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - S H Kim
- Department of Physics, Korea University, Seoul 02841, Korea
| | - S Kinbara
- Faculty of Education, Gifu University, Gifu 501-1193, Japan
| | - K Kobayashi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Koike
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - J Y Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - K Miwa
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - T J Moon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - T Nagae
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Nakada
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Nakagawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Ogura
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - A Sakaguchi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Sako
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Y Sasaki
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - S Sato
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - K Shirotori
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Sugimura
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - S Suto
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - S Suzuki
- Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - T Takahashi
- Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - H Tamura
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - K Tanida
- Advanced Science Research Center (ASRC), Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
| | - Y Togawa
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Z Tsamalaidze
- Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia
| | - M Ukai
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - T F Wang
- Research Center of Nuclear Science and Technology (RCNST) and School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
| | - T O Yamamoto
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
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73
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Broch K, Dieterle J, Branchi F, Hestand NJ, Olivier Y, Tamura H, Cruz C, Nichols VM, Hinderhofer A, Beljonne D, Spano FC, Cerullo G, Bardeen CJ, Schreiber F. Robust singlet fission in pentacene thin films with tuned charge transfer interactions. Nat Commun 2018; 9:954. [PMID: 29507287 PMCID: PMC5838205 DOI: 10.1038/s41467-018-03300-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [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] [Received: 08/04/2017] [Accepted: 01/29/2018] [Indexed: 02/07/2023] Open
Abstract
Singlet fission, the spin-allowed photophysical process converting an excited singlet state into two triplet states, has attracted significant attention for device applications. Research so far has focused mainly on the understanding of singlet fission in pure materials, yet blends offer the promise of a controlled tuning of intermolecular interactions, impacting singlet fission efficiencies. Here we report a study of singlet fission in mixtures of pentacene with weakly interacting spacer molecules. Comparison of experimentally determined stationary optical properties and theoretical calculations indicates a reduction of charge-transfer interactions between pentacene molecules with increasing spacer molecule fraction. Theory predicts that the reduced interactions slow down singlet fission in these blends, but surprisingly we find that singlet fission occurs on a timescale comparable to that in pure crystalline pentacene. We explain the observed robustness of singlet fission in such mixed films by a mechanism of exciton diffusion to hot spots with closer intermolecular spacings.
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Affiliation(s)
- K Broch
- Institute of Applied Physics and Center for Light Matter Interactions, Sensors and Analytics, LISA+, University of Tübingen, Auf der Morgenstelle 10, 72076, Tübingen, Germany.
- Fritz-Haber Institute of the Max-Planck Society, Faradayweg 4-6, 14195, Berlin, Germany.
| | - J Dieterle
- Institute of Applied Physics and Center for Light Matter Interactions, Sensors and Analytics, LISA+, University of Tübingen, Auf der Morgenstelle 10, 72076, Tübingen, Germany
| | - F Branchi
- IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, Milano, 20133, Italy
| | - N J Hestand
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | - Y Olivier
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, 7000, Mons, Belgium
| | - H Tamura
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-8656, Japan
| | - C Cruz
- Department of Chemistry, University of California at Riverside, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - V M Nichols
- Department of Chemistry, University of California at Riverside, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - A Hinderhofer
- Institute of Applied Physics and Center for Light Matter Interactions, Sensors and Analytics, LISA+, University of Tübingen, Auf der Morgenstelle 10, 72076, Tübingen, Germany
| | - D Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, 7000, Mons, Belgium
- School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - F C Spano
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | - G Cerullo
- IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, Milano, 20133, Italy
| | - C J Bardeen
- Department of Chemistry, University of California at Riverside, 501 Big Springs Rd, Riverside, CA, 92521, USA
| | - F Schreiber
- Institute of Applied Physics and Center for Light Matter Interactions, Sensors and Analytics, LISA+, University of Tübingen, Auf der Morgenstelle 10, 72076, Tübingen, Germany
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Tamura H, Kawashima T, Suzuki S, Fujita I, Kaneko H. Efficient Signal Processing of Multineuronal Activities for Neural Interface and Prosthesis. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1625396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives
: Multineuronal spike trains must be efficiently decoded in order to utilize them for controlling artificial limbs and organs. Here we evaluated the efficiency of pooling (averaging) and combining (vectorizing) activities of multiple neurons for decoding neuronal information.
Methods
: Multineuronal activities in the monkey inferior temporal (IT) cortex were obtained by classifying spikes of constituent neurons from multichannel data recorded with a multisite microelectrode. We compared pooling and combining procedures for the amount of visual information transferred by neurons, and for the success rate of stimulus estimation based on neuronal activities in each trial.
Results
: Both pooling and combining activities of multiple neurons increased the amount of information and the success rate with the number of neurons. However, the degree of improvement obtained by increasing the number of neurons was higher when combining activities as opposed to pooling them.
Conclusion: Combining the activities of multiple neurons is more efficient than pooling them for obtaining a precise interpretation of neuronal signals.
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75
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Shiina Y, Suzuki H, Sakairi Y, Tamura H, Wada H, Fujiwara T, Nakajima T, Chiyo M, Ota M, Ota S, Nakatani Y, Yoshino I. P2.07-008 Does PD-L1 Expression of the Archive Surgical Specimen of Primary Tumor Predict the Sensitivity of Recurrence to Nivolumab in Patients with NSCLC? J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.067] [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: 10/18/2022]
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76
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Wada H, Oheda H, Nishii K, Kaiho T, Ohashi K, Shina Y, Sata Y, Toyoda T, Hata A, Sakairi Y, Tamura H, Fujiwara T, Nakajima T, Suzuki H, Chiyo M, Yoshino I. P1.16-008 Near-Infrared Fluorescence-Guided Pulmonary Segmentectomy Following Endobronchial Indocyanine Green Injection. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1062] [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: 11/15/2022]
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77
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Sakairi Y, Nakajima T, Yonemori Y, Kaiho T, Ohashi K, Sata Y, Shiina Y, Toyoda T, Hata A, Tamura H, Fujiwara T, Wada H, Suzuki H, Chiyo M, Yoshino I. P2.12-006 Evaluation of New 25G Needle in EBUS-TBNA Comparing Conventional 22G Needle in Diagnosis for Nodal Metastasis of Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1348] [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: 10/18/2022]
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78
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Nakazawa Y, Nagai N, Ishimori N, Oguchi J, Tamura H. Administration of antioxidant compounds affects the lens chaperone activity and prevents the onset of cataracts. Biomed Pharmacother 2017; 95:137-143. [DOI: 10.1016/j.biopha.2017.08.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/10/2017] [Accepted: 08/10/2017] [Indexed: 09/30/2022] Open
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Kanayasu-Toyoda T, Ishii-Watabe A, Kikuchi Y, Kitagawa H, Suzuki H, Tamura H, Tada M, Suzuki T, Mizuguchi H, Yamaguchi T. Occludin as a functional marker of vascular endothelial cells on tube-forming activity. J Cell Physiol 2017; 233:1700-1711. [PMID: 28681912 DOI: 10.1002/jcp.26082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 07/01/2017] [Accepted: 07/05/2017] [Indexed: 01/03/2023]
Abstract
Cell therapy using endothelial progenitor cells (EPCs) is a promising strategy for the treatment of ischemic diseases. Two types of EPCs have been identified: early EPCs and late EPCs. Late EPCs are able to form tube structure by themselves, and have a high proliferative ability. The functional marker(s) of late EPCs, which relate to their therapeutic potential, have not been fully elucidated. Here we compared the gene expression profiles of several human cord blood derived late EPC lines which exhibit different tube formation activity, and we observed that the expression of occludin (OCLN) in these lines correlated with the tube formation ability, suggesting that OCLN is a candidate functional marker of late EPCs. When OCLN was knocked down by transfecting siRNA, the tube formation on Matrigel, the S phase + G2 /M phase in the cell cycle, and the spheroid-based sprouting of late EPCs were markedly reduced, suggesting the critical role of OCLN in tube formation, sprouting, and proliferation. These results indicated that OCLN plays a novel role in neovascularization and angiogenesis.
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Affiliation(s)
- Toshie Kanayasu-Toyoda
- Department of Pharmacology, Nihon Pharmaceutical University, Komuro, Inamachi, Kita-adachigun, Saitama, Japan.,Division of Microbiology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Akiko Ishii-Watabe
- Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Yutaka Kikuchi
- Division of Microbiology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Hiroko Kitagawa
- Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Hiroko Suzuki
- The Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo, Japan
| | - Hiroomi Tamura
- The Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo, Japan
| | - Minoru Tada
- Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Takuo Suzuki
- Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Teruhide Yamaguchi
- Department of Pharmacology, Nihon Pharmaceutical University, Komuro, Inamachi, Kita-adachigun, Saitama, Japan.,Division of Microbiology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
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80
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Uchihara Y, Ueda F, Tago K, Nakazawa Y, Ohe T, Mashino T, Yokota S, Kasahara T, Tamura H, Funakoshi-Tago M. Alpha-tocopherol attenuates the anti-tumor activity of crizotinib against cells transformed by NPM-ALK. PLoS One 2017; 12:e0183003. [PMID: 28806414 PMCID: PMC5555621 DOI: 10.1371/journal.pone.0183003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/27/2017] [Indexed: 01/25/2023] Open
Abstract
Anaplastic large cell lymphomas (ALCL) are mainly characterized by harboring the fusion protein nucleophosmin-anaplastic lymphoma kinase (NPM-ALK). The ALK inhibitor, crizotinib specifically induced apoptosis in Ba/F3 cells expressing NPM-ALK by inhibiting the activation of NPM-ALK and its downstream molecule, signal transducer and activator of transcription factor 3 (STAT3). We found that α-tocopherol, a major component of vitamin E, attenuated the effects of crizotinib independently of its anti-oxidant properties. Although α-tocopherol suppressed the inhibitory effects of crizotinib on the signaling axis including NPM-ALK and STAT3, it had no influence on the intake of crizotinib into cells. Crizotinib also directly inhibited the kinase activity of NPM-ALK; however, this inhibitory effect was not altered by the co-treatment with α-tocopherol. Whereas the nuclear localization of NPM-ALK was disappeared by the treatment with crizotinib, the co-treatment with α-tocopherol swept the effect of crizotinib and caused the localization of NPM-ALK in nucleus. The administration of α-tocopherol attenuated the anti-tumor activity of crizotinib against NPM-ALK-provoked tumorigenesis in vivo. Furthermore, the α-tocopherol-induced inhibition of crizotinib-caused apoptosis was also observed in NPM-ALK-positive cells derived from ALCL patients, namely, SUDHL-1 and Ki-JK. Collectively, these results not only revealed the novel mechanism underlying crizotinib-induced apoptosis in NPM-ALK-positive cells, but also suggest that the anti-tumor effects of crizotinib are attenuated when it is taken in combination with vitamin E.
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Affiliation(s)
- Yuki Uchihara
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Fumihito Ueda
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, Shimotsuke-shi, Tochigi-ken, Japan
| | - Yosuke Nakazawa
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Tomoyuki Ohe
- Division of Medicinal Chemistry and Bio-organic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Tadahiko Mashino
- Division of Medicinal Chemistry and Bio-organic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Shigenobu Yokota
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Tadashi Kasahara
- International University of Health and Welfare, Graduate School, Minato-ku, Tokyo, Japan
| | - Hiroomi Tamura
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Megumi Funakoshi-Tago
- Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
- * E-mail:
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81
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Watanabe K, Watanabe T, Yamaura G, Wanezaki M, Kutsuzawa D, Iwayama T, Tamura H, Nishiyama S, Takahashi H, Arimoto T, Shishido T, Yamauchi S, Miyamoto T, Kubota I. P6217Myocardial damage markers can risk-stratify aortic aneurysm patients with coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6217] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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82
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Shiozaki M, Inoue K, Ishiura J, Chikata Y, Kimura Y, Fukuda K, Tamura H, Fujiwara Y, Suwa S, Sumiyoshi M, Daida H. P4691The utility of a 0-hour/1-hour algorithm in patients with suspected non-ST elevation myocardial infarction in Japan. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4691] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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83
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Toshima T, Watanabe T, Nishiyama S, Wanezaki M, Tamura H, Arimoto T, Takahashi H, Shishido T, Yamanaka T, Miyamoto T, Konta T, Kubota I. P6487Percutaneous coronary intervention ameliorates short-term mortality even in acute myocardial infarction patients with severe renal dysfunction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6487] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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84
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Hashimoto N, Tamura H, Watanabe T, Nishiyama S, Wanezaki M, Yamaura G, Iwayama T, Arimoto T, Takahashi H, Shishido T, Yamanaka T, Miyamoto T, Kubota I. P2412Decreased left atrial appendage wall motion velocity by transthoracic echocardiography is a feasible marker for recurrence of atrial fibrillation after pulmonary vein isolation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2412] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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85
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Nakayama T, Funakoshi-Tago M, Tamura H. Coffee reduces KRAS expression in Caco-2 human colon carcinoma cells via regulation of miRNAs. Oncol Lett 2017; 14:1109-1114. [PMID: 28693281 DOI: 10.3892/ol.2017.6227] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 12/12/2015] [Accepted: 02/17/2017] [Indexed: 12/17/2022] Open
Abstract
Previous epidemiological studies have demonstrated that moderate coffee consumption is associated with a lower risk of certain types of cancer, particularly colon cancer. To elucidate the molecular basis for this protective action, the effect of coffee on Caco-2 human colon carcinoma cells was investigated. Low concentrations of coffee (<5%) inhibited proliferation of Caco-2 cells without affecting cell viability. Coffee also reduced KRAS proto-oncogene, GTPase (KRAS) gene expression in a dose-dependent manner; however, caffeine, caffeic acid and chlorogenic acid, three major constituents of coffee, did not exhibit this effect. Increasing the duration of coffee bean roasting increased the reduction in KRAS expression, suggesting that the active constituents responsible for this effect emerged during the roasting process. MicroRNA (miR) analysis revealed that coffee induced the expression of miR-30c and miR-96, both of which target the KRAS gene. The results of the present study suggested that daily coffee consumption may reduce KRAS activity, thereby preventing the malignant growth of colon carcinoma cells.
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Affiliation(s)
- Takuya Nakayama
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo 105-8512, Japan
| | | | - Hiroomi Tamura
- Graduate School of Pharmaceutical Sciences, Keio University, Tokyo 105-8512, Japan
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86
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Imagawa S, Mito T, Takahata K, Yamada S, Yanagi N, Chikaraishi H, Maekawa R, Tamura H, Iwamoto A, Hamaguchi S, Obana T, Okamura T, Shirai Y, Ise T, Hamajima T. Overview of LHD Superconducting Magnet System and Its 10-Year Operation. Fusion Science and Technology 2017. [DOI: 10.13182/fst10-a10843] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Imagawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Mito
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - K. Takahata
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Yamada
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - N. Yanagi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Chikaraishi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - R. Maekawa
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - H. Tamura
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - A. Iwamoto
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - S. Hamaguchi
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Obana
- National Institute for Fusion Science, Toki 509-5292, Japan
| | - T. Okamura
- Tokyo Institute of Technology, Yokohama 226-8502, Japan
| | - Y. Shirai
- Kyoto University, Kyoto 606-8501, Japan
| | - T. Ise
- Osaka University, Suita 565-0871, Japan
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87
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Kawata M, Morikawa S, Shiosaka S, Tamura H. Ablation of neuropsin-neuregulin 1 signaling imbalances ErbB4 inhibitory networks and disrupts hippocampal gamma oscillation. Transl Psychiatry 2017; 7:e1052. [PMID: 28267150 PMCID: PMC5416666 DOI: 10.1038/tp.2017.20] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/19/2017] [Accepted: 01/25/2017] [Indexed: 12/11/2022] Open
Abstract
Parvalbumin-expressing interneurons are pivotal for the processing of information in healthy brain, whereas the coordination of these functions is seriously disrupted in diseased brain. How these interneurons in the hippocampus participate in pathological functions remains unclear. We previously reported that neuregulin 1 (NRG1)-ErbB4 signaling, which is actuated by neuropsin, is important for coordinating brain plasticity. Neuropsin cleaves mature NRG1 (bound to extracellular glycosaminoglycans) in response to long-term potentiation or depression, liberating a soluble ligand that activates its receptor, ErbB4. Here, we show in mice that kainate-induced status epilepticus transiently elevates the proteolytic activity of neuropsin and stimulates cFos expression with a time course suggesting that activation of ErbB4- and parvalbumin-expressing interneurons follows the excitation and subsequent silencing of pyramidal neurons. In neuropsin-deficient mice, kainate administration impaired signaling and disrupted the neuronal excitation-inhibition balance (E/I balance) in hippocampal networks, by decreasing the activity of parvalbumin-positive interneurons while increasing that of pyramidal neurons, resulting in the progression of status epilepticus. Slow, but not fast, gamma oscillations in neuropsin-deficient mice showed reduced power. Intracerebroventricular infusion of the soluble NRG1 ligand moiety restored the E/I balance, status epilepticus and gamma oscillations to normal levels. These results suggest that the neuropsin-NRG1 signaling system has a role in pathological processes underlying temporal lobe epilepsy by regulating the activity of parvalbumin-expressing interneurons, and that neuropsin regulates E/I balance and gamma oscillations through NRG1-ErbB4 signaling toward parvalbumin-expressing interneurons. This neuronal system may be a useful target of pharmacological therapies against cognitive disorders.
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Affiliation(s)
- M Kawata
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan,Department of Pharmacology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
| | - S Morikawa
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan,Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
| | - S Shiosaka
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan
| | - H Tamura
- Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan,Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan. E-mail:
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88
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Funakoshi-Tago M, Moriwaki T, Ueda F, Tamura H, Kasahara T, Tago K. Phosphorylated CIS suppresses the Epo or JAK2 V617F mutant-triggered cell proliferation through binding to EpoR. Cell Signal 2017; 31:41-57. [DOI: 10.1016/j.cellsig.2016.12.008] [Citation(s) in RCA: 8] [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] [Received: 07/23/2016] [Revised: 11/21/2016] [Accepted: 12/23/2016] [Indexed: 12/01/2022]
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89
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Ishimori N, Oguchi J, Nakazawa Y, Kobata K, Funakoshi-Tago M, Tamura H. Roasting Enhances the Anti-Cataract Effect of Coffee Beans: Ameliorating Selenite-Induced Cataracts in Rats. Curr Eye Res 2017; 42:864-870. [PMID: 28128997 DOI: 10.1080/02713683.2016.1262877] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 12/11/2022]
Abstract
PURPOSE Coffee is a widely consumed beverage. While recent studies have linked its intake to a reduced risk of cataracts, caffeine is believed to be the key factor for its effect. To know how roasting beans affects the effect of coffee on cataract formation, we investigated the impact roasting using a selenite-induced cataract rat model. MATERIALS AND METHODS Sprague Dawley rats were given a single injection of sodium selenite, which induced formation of nuclear cataracts by day 6, with or without coffee intake (100% coffee, 0.2 mL/day) for following 3 days. RESULTS The concentrations of glutathione (GSH) and ascorbic acid (AsA) in selenite-induced cataract lenses declined to half that of controls. However, 3 days of coffee intake ameliorated the reduction of GSH and AsA so that concentrations remained at 70-80% that of controls. Roasting enhanced the preventive effect of coffee by further reducing cataract formation and ameliorating selenite-induced reduction of antioxidants. High-performance liquid chromatography analysis revealed degradation of chlorogenic acid and generation of pyrocatechol during the coffee roasting process. We discovered that pyrocatechol, at doses equivalent to that found in dark-roasted coffee, was equally effective as caffeine at reducing cataract formation and ameliorating the reduction of antioxidants. CONCLUSION Our results indicate that pyrocatechol, generated during the roasting process, acts as an antioxidant together with caffeine to prevent cataract formation.
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Affiliation(s)
- Nana Ishimori
- a Faculty of Pharmacy , Keio University, Shibakoen , Minatoku , Tokyo , Japan
| | - Jun Oguchi
- a Faculty of Pharmacy , Keio University, Shibakoen , Minatoku , Tokyo , Japan
| | - Yosuke Nakazawa
- a Faculty of Pharmacy , Keio University, Shibakoen , Minatoku , Tokyo , Japan
| | - Kenji Kobata
- b Faculty of Pharmaceutical Sciences , Josai University , Sakado , Saitama , Japan
| | | | - Hiroomi Tamura
- a Faculty of Pharmacy , Keio University, Shibakoen , Minatoku , Tokyo , Japan
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90
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Ueda F, Tago K, Tamura H, Funakoshi-Tago M. Three Tyrosine Residues in the Erythropoietin Receptor Are Essential for Janus Kinase 2 V617F Mutant-induced Tumorigenesis. J Biol Chem 2016; 292:1826-1846. [PMID: 27998978 DOI: 10.1074/jbc.m116.749465] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 07/20/2016] [Revised: 12/20/2016] [Indexed: 11/06/2022] Open
Abstract
The erythropoietin receptor (EpoR) regulates development of blood cells, and its full activation normally requires the cytokine erythropoietin (Epo). In the case of myeloproliferative neoplasms (MPN), Epo-independent signaling through EpoR can be caused by a point mutation, V617F, in the EpoR-interacting tyrosine kinase Janus kinase 2 (JAK2). In cells expressing the JAK2 V617F mutant, eight tyrosine residues in the intracellular domain of EpoR are phosphorylated, but the functional role of these phosphorylations in oncogenic signaling is incompletely understood. Here, to evaluate the functional consequences of the phosphorylation of these tyrosine residues, we constructed an EpoR-8YF mutant in which we substituted all eight tyrosine residues with phenylalanine. Co-expression of EpoR-8YF with the JAK2 V617F mutant failed to induce cytokine-independent cell proliferation and tumorigenesis, indicating that JAK2-mediated EpoR phosphorylation is the reason for JAK2 V617F mutant-induced oncogenic signaling. An exhaustive mutational analysis of the eight EpoR tyrosine residues indicated that three of these residues, Tyr-343, Tyr-460, and Tyr-464, are required for the JAK2 V617F mutant to exhibit its oncogenic activity. We also showed that phosphorylation at these three residues was necessary for full activation of the transcription factor STAT5, which is a critical downstream factor of JAK2 V617F-induced oncogenic signaling. In contrast, Epo stimulation could moderately stimulate the proliferation of cells expressing wild type JAK2 and EpoR-8YF, suggesting that the requirement of the phosphorylation of these three tyrosine residues seems to be specific for the oncogenic proliferation provoked by V617F mutation. Collectively, these results have revealed that phosphorylation of Tyr-343, Tyr-460, and Tyr-464 in EpoR underlies JAK2 V617F mutant-induced tumorigenesis. We propose that the targeted disruption of this pathway has therapeutic utility for managing MPN.
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Affiliation(s)
- Fumihito Ueda
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512
| | - Kenji Tago
- the Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Hiroomi Tamura
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512
| | - Megumi Funakoshi-Tago
- From the Division of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512.
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91
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Takahashi K, Funakoshi‑Tago M, Takaoka M, Kakio S, Kobata K, Tamura H. Roasted coffee induction of aldo-keto reductase�1C3 expression in LNCaP human prostate cancer cells is associated with Nrf2 activation. Oncol Lett 2016. [DOI: 10.3892/ol.2016.5334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Kunitugu Takahashi
- School of Pharmaceutical Sciences, Keio University, Tokyo 105‑8512, Japan
| | | | - Marie Takaoka
- School of Pharmaceutical Sciences, Keio University, Tokyo 105‑8512, Japan
| | - Shota Kakio
- School of Pharmaceutical Sciences, Keio University, Tokyo 105‑8512, Japan
| | - Kenji Kobata
- Department of Pharmaceutical and Health Sciences, Josai University, Sakado, Saitama 350‑0295, Japan
| | - Hiroomi Tamura
- School of Pharmaceutical Sciences, Keio University, Tokyo 105‑8512, Japan
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92
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Funakoshi-Tago M, Ohsawa K, Ishikawa T, Nakamura F, Ueda F, Narukawa Y, Kiuchi F, Tamura H, Tago K, Kasahara T. Inhibitory effects of flavonoids extracted from Nepalese propolis on the LPS signaling pathway. Int Immunopharmacol 2016; 40:550-560. [DOI: 10.1016/j.intimp.2016.10.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 10/11/2016] [Accepted: 10/11/2016] [Indexed: 01/27/2023]
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93
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Nakazawa Y, Oka M, Funakoshi-Tago M, Tamura H, Takehana M. The Extracellular C-loop Domain Plays an Important Role in the Cell Adhesion Function of Aquaporin 0. Curr Eye Res 2016; 42:617-624. [PMID: 27754715 DOI: 10.1080/02713683.2016.1217547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE Although aquaporin 0 (AQP0) is a member of the AQP family, it has limited water permeability compared with other members. AQP0 may also have cell adhesion-related functions, but the evidence is still limited. Here, we studied the relationship of AQP0 to cell adhesion and determined the region required for cell adhesion. METHODS L-cell fibroblasts stably expressing AQP0 or AQP1 (L-AQP0 or L-AQP1) were established. One group of cells was stained with CellTracker Red and cultured into a confluent monolayer, whereas the other group was loaded with CellTracker Blue and seeded over the monolayer. To study cell adhesion, the percentages of lower and upper layer cells were measured using flow cytometry. To determine the region of AQP0 required for adhesion, activity was done by pull-down assay using glutathione S-transferase fusion proteins. To study the water permeability, Xenopus laevis oocyte expressing AQP0 wild-type or AQP0 mutated in C-loop was transferred to a hypotonic solution and photographed, and the diameter was measured to calculate the volume. RESULTS More cells adhered to the lower cells in the L-AQP0 homotypic pair than other pairs such as L-AQP1 homotypic or L-AQP0/L-AQP1 heterotypic pairs. Pull-down assays revealed that AQP0 could bind to itself via the C-loop extracellular domain. Furthermore, we determined that 109Pro and 110Pro in the C-loop were important for cell adhesion. However, mutation of the C-loop in AQP0 did not affect its water permeability. CONCLUSIONS AQP0 is known to bind lipids in the opposing membrane. Our data suggest that this cell-to-cell adhesion occurs not only in the AQP0/liquids but also via AQP0/AQP0 interaction through the C-loop domain. Mutations in the C-loop amino acids did not affect the water permeability of AQP0 but did affect its cell adhesion function. These independent dual functions of AQP0 are important for lens transparency.
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Affiliation(s)
| | - Mikako Oka
- b Center for Pharmaceutical Education , Yokohama University of Pharmacy , Kanagawa , Japan
| | | | | | - Makoto Takehana
- a Faculty of Pharmacy , Keio University , Tokyo , Japan.,b Center for Pharmaceutical Education , Yokohama University of Pharmacy , Kanagawa , Japan
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94
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Adachi Y, Satokawa C, Saeki M, Ohno N, Tamura H, Tanaka S, Yadomae T. Inhibition by a CD14 monoclonal antibody of lipopolysaccharide binding to murine macrophages. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/09680519990050030701] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We have established an anti-CD14 mAb named 4C1 against murine macrophages. 4C1 can bind to thioglycolate-elicited peritoneal macrophages, bone marrow-derived macrophages and casein-induced peritoneal neutrophils. Immunostaining with 4C1 was inhibited by treatment of the cells with phosphatidylinositol specific phospholipase C, suggesting that the antigen is GPI-anchored. Immunoprecipitates from biotin-labeled RAW264.7 cell lysate with 4C1 were around 55 kDa and were visualized with rmC5-3, the only commercially available anti-murine CD14 mAb. 4C1 positively stained COS7 cells transfected with an expression vector containing cDNA of murine CD14. Pretreatment of macrophages with 4C1 reduced LPS-mediated production of TNFα, IL-6, and nitrite. The binding of FITC-LPS to RAW264.7 cells was blocked by pretreatment with 4C1 but not with rmC5. Pretreatment of cells with unlabeled 4C1 mAb but not unlabeled rmC5-3 reduced binding of FITC-4C1. These results suggest that the 4C1 epitope on murine CD14 plays an important role in LPS binding and is distinct from the rmC5-3 epitope.
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Affiliation(s)
- Y. Adachi
- Laboratory of Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan,
| | - C. Satokawa
- Laboratory of Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
| | - M. Saeki
- Laboratory of Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
| | - N. Ohno
- Laboratory of Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
| | - H. Tamura
- Seikagaku Corporation, Tokyo Institute, Tokyo, Japan
| | - S. Tanaka
- Seikagaku Corporation, Tokyo Institute, Tokyo, Japan
| | - T. Yadomae
- Laboratory of Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Tokyo, Japan
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95
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Uchihara Y, Funakoshi-Tago M, Tago K, Nakazawa Y, Ueda F, Tamura H. PT04.3: α-Tocopherol Attenuates the Drug Efficacy of Crizotinib Against the Cellular Transformation Provoked by NPM-ALK in Ros Independent Manner. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30304-1] [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: 11/25/2022]
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96
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Inoue K, Takano H, Oda T, Yanagisawa R, Tamura H, Ohno N, Adachi Y, Ishibashi K, Yoshikawa T. Candida Soluble Cell Wall β-D-Glucan Induces Lung Inflammation in Mice. Int J Immunopathol Pharmacol 2016; 20:499-508. [PMID: 17880763 DOI: 10.1177/039463200702000308] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bioactivity of cell wall component(s) of fungi has not been fully elucidated, especially in vivo. We isolated Candida soluble beta-D-glucan (CSBG) from Candida albicans (C. albicans). We investigated the effects of airway exposure to CSBG on the immune systems in the airways in mice. CSBG exposure induced neutrophilic and eosinophilic inflammation in the lung, which was concomitant with the increased local expression of proinflammatory cytokines including tumor necrosis factor - α, interleukin (IL)-1 β, IL-6, macrophage inflammatory protein -1 α, macrophage chemoattractant protein -1, RANTES (regulated on activation and normal T cells expressed and secreted), and eotaxin. The lung inflammation with enhanced expression of proinflammatory proteins caused by CSBG was directly related to its structure, since structurally degraded products of CSBG by formic acid induced negligible responses in the lung. CSBG enhanced nuclear localization of phosphorylated signal transducer and activator of transcription (STAT)-6 in the lung. These results suggest that airway exposure to CSBG induces lung inflammation, at least partly, via the enhanced expression of proinflammatory cytokines and the activation of STAT-6 pathway, and can be a proper murine model for fungal lung inflammation.
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Affiliation(s)
- K Inoue
- Environmental Health Sciences Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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97
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Nakazawa Y, Oka M, Tamura H, Takehana M. Effect of hesperetin on chaperone activity in selenite-induced cataract. Open Med (Wars) 2016; 11:183-189. [PMID: 28352791 PMCID: PMC5329822 DOI: 10.1515/med-2016-0035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 04/18/2016] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Chaperone activity of α-crystallin in the lens works to prevent protein aggregation and is important to maintain the lens transparency. This study evaluated the effect of hesperetin on lens chaperone activity in selenite-induced cataracts. METHODOLOGY Thirteen-day-old rats were divided into four groups. Animals were given hesperetin (groups G2 and G4) or vehicle (G1 and G3) on Days 0, 1, and 2. Rats in G3 and G4 were administered selenite subcutaneously 4 hours after the first hesperetin injection. On Days 2, 4, and 6, cataract grades were evaluated using slit-lamp biomicroscopy. The amount of a-crystallin and chaperone activity in water-soluble fraction were measured after animals sacrificed. RESULTS G3 on day 4 had developed significant cataract, as an average cataract grading of 4.6 ± 0.2. In contrast, G4 had less severe central opacities and lower stage cataracts than G3, as an average cataract grading of 2.4 ± 0.4. The a-crystallin levels in G3 lenses were lower than in G1, but the same as G4. Additionally, chaperone activity was weaker in G3 lenses than G1, but the same as in G4. CONCLUSIONS Our results suggest that hesperetin can prevent the decreasing lens chaperone activity and a-crystallin water solubility by administered of selenite.
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Affiliation(s)
- Yosuke Nakazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan, 105-8512, Tel/Fax: +81-3-5400-2689
| | - Mikako Oka
- Center for Pharmaceutical Education, Yokohama University of Pharmacy, Japan
| | | | - Makoto Takehana
- Faculty of Pharmacy, Keio University, Japan
- Center for Pharmaceutical Education, Yokohama University of Pharmacy, Japan
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98
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Yorita T, Hatanaka K, Fukuda M, Shimada K, Yasuda Y, Saito T, Tamura H, Kamakura K. Developments of fast emittance monitors for ion sources at RCNP. Rev Sci Instrum 2016; 87:02B928. [PMID: 26932100 DOI: 10.1063/1.4933340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Recently, several developments of low energy beam transport line and its beam diagnostic systems have been performed to improve the injection efficiency of ion beam to azimuthally varying field cyclotron at Research Center for Nuclear Physics, Osaka University. One of those is the fast emittance monitor which can measure within several seconds for the efficient beam development and a Pepper-Pot Emittance Monitor (PPEM) has been developed. The PPEM consists of pepper-pot mask, multichannel plate, fluorescent screen, mirror, and CCD camera. The CCD image is taken via IEEE1394b to a personal computer and analyzed immediately and frequently, and then real time measurement with about 2 Hz has been achieved.
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Affiliation(s)
- T Yorita
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - K Hatanaka
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - M Fukuda
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - K Shimada
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - Y Yasuda
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - T Saito
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - H Tamura
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
| | - K Kamakura
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
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99
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Kakio S, Funakoshi-Tago M, Kobata K, Tamura H. Coffee induces vascular endothelial growth factor (VEGF) expression in human neuroblastama SH-SY5Y cells. Nutr Neurosci 2016; 20:336-342. [PMID: 26788968 DOI: 10.1080/1028415x.2015.1133106] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Recent evidence indicates that hypoxia-inducible vascular endothelial growth factor (VEGF) has neurotrophic and neuroprotective effects on neuronal and glial cells. On the other hand, recent epidemiological studies showed that daily coffee consumption has been associated with a lower risk of several neuronal disorders. Therefore, we investigated the effect of coffee on VEGF expression in human neuroblastoma SH-SY5Y cells. We found that even low concentration of coffee (<2%) strongly induced VEGF expression via an activation of HIF-1α. The activation of HIF-1α by coffee was attributed to the coffee-dependent inhibition of prolyl hydroxylation of HIF1α, which is essential for proteolytic degradation of HIF-1α. However, no inhibition was observed at the catalytic activity in vitro. Coffee component(s) responsible for the activation of HIF-1α was not major constituents such as caffeine, caffeic acid, chlorogenic acid, and trigonelline, but was found to emerge during roasting process. The active component(s) was extractable with ethyl acetate. Our results suggest that daily consumption of coffee may induce VEGF expression in neuronal cells. This might be related to protective effect of coffee on neural disorders such as Alzheimer's disease and Parkinson's disease.
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Affiliation(s)
- Shota Kakio
- a Graduate School of Pharmaceutical Sciences, Keio University , Tokyo , Japan
| | | | - Kenji Kobata
- b Department of Pharmaceutical and Health Sciences , Josai University , Saitama , Japan
| | - Hiroomi Tamura
- a Graduate School of Pharmaceutical Sciences, Keio University , Tokyo , Japan
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100
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Funakoshi-Tago M, Hattori T, Ueda F, Tago K, Ohe T, Mashino T, Tamura H. A proline-type fullerene derivative inhibits adipogenesis by preventing PPARγ activation. Biochem Biophys Rep 2016; 5:259-265. [PMID: 28955832 PMCID: PMC5600428 DOI: 10.1016/j.bbrep.2016.01.001] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 12/14/2015] [Accepted: 01/05/2016] [Indexed: 11/17/2022] Open
Abstract
Obesity and its associated metabolic diseases represent some of the most rapidly expanding health issues worldwide, and, thus, the development of a novel chemical compound to suppress adipogenesis is strongly expected. We herein investigated the effects of water-soluble fullerene derivatives: a bis-malonic acid derivative and three types of proline-type fullerene derivatives, on adipogenesis using NIH-3T3 cells overexpressing PPARγ. One of the proline-type fullerene derivatives (P3) harboring three carboxy groups significantly inhibited lipid accumulation and the expression of adipocyte-specific genes, such as aP2, induced by the PPARγ agonist rosiglitazone. On the other hand, the bis-malonic acid derivative (M) and the 2 other proline-type fullerene derivatives (P1, P2), which have two carboxy groups, had no effect on PPARγ-mediated lipid accumulation or the expression of aP2. P3 fullerene also inhibited lipid accumulation induced by the combined stimulation with 3-isobutyl-1-methylxanthine (IBMX), dexamethasone, and insulin in 3T3-L1 preadipocytes. During the differentiation of 3T3-L1 cells into adipocytes, P3 fullerene did not affect the expression of C/EBPδ, C/EBPβ, or PPARγ, but markedly inhibited that of aP2 mRNA. These results suggest that P3 fullerene exhibits anti-obesity activity by preventing the activation of PPARγ. Fullerene derivative inhibits the rosiglitazone-induced adipogenesis. Fullerene derivative inhibits the rosiglitazone-induced expression of aP2 mRNA. Fullerene derivative inhibits adipogenesis of 3T3-L1 preadipocyte. Fullerene derivative inhibits the activation of PPARγ in 3T3-L1 preadipocyte.
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Key Words
- Adipogenesis
- C/EBPs, CCAAT/enhancer-binding proteins
- DMSO, dimethyl sulfoxide
- FBS, fetal bovine serum
- Fullerene
- HIV, human immunodeficiency virus
- IBMX, 3-isobutyl-1-methylxanthine
- NF-κB, nuclear factor kappa B
- Obesity
- PBS, phosphate-buffered saline
- PPARγ
- PPARγ, peroxisome proliferator-activated receptor γ
- ROS, reactive oxygen species
- RT-PCR, reverse transcription-polymerase chain reaction.
- aP2, adipocyte Protein 2
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Affiliation(s)
- Megumi Funakoshi-Tago
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
- Correspondence to: Graduate School of Pharmaceutical Sciences, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.Graduate School of Pharmaceutical Sciences, Keio University1-5-30 ShibakoenMinato-kuTokyo105-8512Japan
| | - Takahiro Hattori
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Fumihito Ueda
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kenji Tago
- Division of Structural Biochemistry, Department of Biochemistry, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Tomoyuki Ohe
- Department of Bioorganic and Medicinal Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Tadahiko Mashino
- Department of Bioorganic and Medicinal Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Hiroomi Tamura
- Department of Hygienic Chemistry, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
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