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Yanagisawa T, Matsumori H, Saito H, Hidaka H, Amitsuka H, Nakamura S, Awaji S, Gorbunov DI, Zherlitsyn S, Wosnitza J, Uhlířová K, Vališka M, Sechovský V. Electric Quadrupolar Contributions in the Magnetic Phases of UNi_{4}B. Phys Rev Lett 2021; 126:157201. [PMID: 33929262 DOI: 10.1103/physrevlett.126.157201] [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: 07/07/2020] [Revised: 12/21/2020] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
We present acoustic signatures of the electric quadrupolar degrees of freedom in the honeycomb-layer compound UNi_{4}B. The transverse ultrasonic mode C_{66} shows softening below 30 K both in the paramagnetic phase and antiferromagnetic phases down to ∼0.33 K. Furthermore, we traced magnetic field-temperature phase diagrams up to 30 T and observed a highly anisotropic elastic response within the honeycomb layer. These observations strongly suggest that Γ_{6}(E_{2g}) electric quadrupolar degrees of freedom in localized 5f^{2} (J=4) states are playing an important role in the magnetic toroidal dipole order and magnetic-field-induced phases of UNi_{4}B, and evidence some of the U ions remain in the paramagnetic state even if the system undergoes magnetic toroidal ordering.
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Affiliation(s)
- T Yanagisawa
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Matsumori
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Saito
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Hidaka
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Amitsuka
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - S Nakamura
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - S Awaji
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - D I Gorbunov
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328 Dresden, Germany
| | - S Zherlitsyn
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328 Dresden, Germany
| | - J Wosnitza
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328 Dresden, Germany
- Institut für Festkörper- und Materialphysik, TU Dresden, 01062 Dresden, Germany
| | - K Uhlířová
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague 2, Czech Republic
| | - M Vališka
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague 2, Czech Republic
| | - V Sechovský
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague 2, Czech Republic
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Watanabe N, Sameera W, Hidaka H, Miyazaki A, Kouchi A. Ultraviolet-photon exposure stimulates negative current conductivity in amorphous ice below 50 K. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136820] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yanagisawa T, Hidaka H, Amitsuka H, Zherlitsyn S, Wosnitza J, Yamane Y, Onimaru T. Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute Non-Kramers System Y_{1-x}Pr_{x}Ir_{2}Zn_{20}. Phys Rev Lett 2019; 123:067201. [PMID: 31491187 DOI: 10.1103/physrevlett.123.067201] [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: 02/20/2019] [Revised: 05/27/2019] [Indexed: 06/10/2023]
Abstract
Acoustic signatures of the single-site quadrupolar Kondo effect in Y_{0.966}Pr_{0.034}Ir_{2}Zn_{20} are presented. The elastic constant (C_{11}-C_{12})/2, corresponding to the Γ_{3}(E)-symmetry electric-quadrupolar response, reveals a logarithmic temperature dependence of the quadrupolar susceptibility in the low-magnetic-field region below ∼0.3 K. Furthermore, the Curie-type divergence of the elastic constant down to ∼1 K indicates that the Pr ions in this diluted system have a non-Kramers ground-state doublet. These observations evidence the single-site quadrupolar Kondo effect, as previously suggested based on specific-heat and electrical-resistivity data.
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Affiliation(s)
- T Yanagisawa
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Hidaka
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - H Amitsuka
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
| | - S Zherlitsyn
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - J Wosnitza
- Hochfeld-Magnetlabor Dresden (HLD-EMFL) and Würzburg-Dresden Cluster of Excellence ct.qmat, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Institut für Festkörper- und Materialphysik, TU Dresden, 01062 Dresden, Germany
| | - Y Yamane
- Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
| | - T Onimaru
- Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
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Christovam DS, Giles C, Mendonça-Ferreira L, Leão J, Ratcliff W, Lynn JW, Ramos S, Hering EN, Hidaka H, Baggio-Saitovich E, Fisk Z, Pagliuso PG, Adriano C. Spin rotation induced by applied pressure in the Cd-doped Ce 2RhIn 8 intermetallic compound. Phys Rev B 2019; 100:https://doi.org/10.1021/acs.macromol.8b00556. [PMID: 33123651 PMCID: PMC7592415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The pressure evolution of the magnetic properties of the Ce2RhIn7.79Cd0.21 heavy fermion compound was investigated by single crystal neutron magnetic diffraction and electrical resistivity experiments under applied pressure. From the neutron magnetic diffraction data, up to P = 0.6 GPa, we found no changes in the magnetic structure or in the ordering temperature T N = 4.8 K. However, the increase of pressure induces an interesting spin rotation of the ordered antiferromagnetic moment of Ce2RhIn7.79Cd0.21 into the ab tetragonal plane. From the electrical resistivity measurements under pressure, we have mapped the evolution of T N and the maximum of the temperature dependent electrical resistivity (T MAX) as a function of the pressure (P ≲ 3.6 GPa). To gain some insight into the microscopic origin of the observed spin rotation as a function of pressure, we have also analyzed some macroscopic magnetic susceptibility data at ambient pressure for pure and Cd-doped Ce2RhIn8 using a mean-field model including tetragonal crystalline electric field (CEF). The analysis indicates that these compounds have a Kramers doublet Γ 7 - -type ground state, followed by a Γ 7 + first excited state at Δ1 ∼ 80 K and a Γ6 second excited state at Δ2 ∼ 270 K for Ce2RhIn8 and Δ2 ∼ 250 K for Ce2RhIn7.79Cd0.21. The evolution of the magnetic properties of Ce2RhIn8 as a function of Cd doping and the rotation of the direction of the ordered moment for the Ce2RhIn7.79Cd0.21 compound under pressure suggest important changes of the single ion anisotropy of Ce3+ induced by applying pressure and Cd doping in these systems. These changes are reflected in modifications in the CEF scheme that will ultimately affect the actual ground state of these compounds.
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Affiliation(s)
- D S Christovam
- Instituto de Física "Gleb Wataghin," UNICAMP, Campinas-SP, 13083-970, Brazil
| | - C Giles
- Instituto de Física "Gleb Wataghin," UNICAMP, Campinas-SP, 13083-970, Brazil
| | - L Mendonça-Ferreira
- CCNH, Universidade Federal do ABC (UFABC), Santo André-SP, 09210-580, Brazil
| | - J Leão
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - W Ratcliff
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - J W Lynn
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - S Ramos
- Departamento de Física, Universidade Federal de Roraima, Boa Vista-RR, 69304-000, Brazil
| | - E N Hering
- Departamento de Física, Universidade Federal de Roraima, Boa Vista-RR, 69304-000, Brazil
| | - H Hidaka
- Department of Physics, Hokkaido University, Sapporo, Hokkaido 060-0808, Japan
| | - E Baggio-Saitovich
- Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro, RJ, Brazil
| | - Z Fisk
- Department of Physics and Astronomy, University of California, Irvine, California 92697-4574, USA
| | - P G Pagliuso
- Instituto de Física "Gleb Wataghin," UNICAMP, Campinas-SP, 13083-970, Brazil
| | - C Adriano
- Instituto de Física "Gleb Wataghin," UNICAMP, Campinas-SP, 13083-970, Brazil
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Kouchi A, Hama T, Kimura Y, Hidaka H, Escribano R, Watanabe N. Matrix sublimation method for the formation of high-density amorphous ice. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.06.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Itesako T, Seki N, Yoshino H, Chiyomaru T, Yamasaki T, Hidaka H, Yonezawa T, Nohata N, Kinoshita T, Nakagawa M, Enokida H. The microRNA expression signature of bladder cancer by deep sequencing: the functional significance of the miR-195/497 cluster. PLoS One 2014; 9:e84311. [PMID: 24520312 PMCID: PMC3919700 DOI: 10.1371/journal.pone.0084311] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 11/13/2013] [Indexed: 02/06/2023] Open
Abstract
Current genome-wide microRNA (miRNA) expression signature analysis using deep sequencing technologies can drive the discovery of novel cancer pathways regulated by oncogenic and/or tumor suppressive miRNAs. We determined the genome-wide miRNA expression signature in bladder cancer (BC) by deep sequencing technology. A total of ten small RNA libraries were sequenced (five BCs and five samples of histologically normal bladder epithelia (NBE)), and 13,190,619 to 18,559,060 clean small RNA reads were obtained. A total of 933 known miRNAs and 17 new miRNA candidates were detected in this analysis. Among the known miRNAs, a total of 60 miRNAs were significantly downregulated in BC compared with NBE. We also found that several miRNAs, such as miR-1/133a, miR-206/133b, let-7c/miR-99a, miR-143/145 and miR-195/497, were located close together at five distinct loci and constituted clustered miRNAs. Among these clustered miRNAs, we focused on the miR-195/497 cluster because this clustered miRNA had not been analyzed in BC. Transfection of mature miR-195 or miR-497 in two BC cell lines (BOY and T24) significantly inhibited cancer cell proliferation, migration and invasion, suggesting that the miR-195/497 cluster functioned as tumor suppressors in BC. Regarding the genes targeted by the miR-195/497 cluster, the TargetScan algorithm showed that 6,730 genes were putative miR-195/497 targets, and 113 significantly enriched signaling pathways were identified in this analysis. The “Pathways in cancer” category was the most enriched, involving 104 candidate target genes. Gene expression data revealed that 27 of 104 candidate target genes were actually upregulated in BC clinical specimens. Luciferase reporter assays and Western blotting demonstrated that BIRC5 and WNT7A were directly targeted by miR-195/497. In conclusion, aberrant expression of clustered miRNAs was identified by deep sequencing, and downregulation of miR-195/497 contributed to BC progression and metastasis. Tumor suppressive miRNA-mediated cancer pathways provide new insights into the potential mechanisms of BC oncogenesis.
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Affiliation(s)
- Toshihiko Itesako
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Hirofumi Yoshino
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Chiyomaru
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Hidaka
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tomokazu Yonezawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Nijiro Nohata
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Takashi Kinoshita
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masayuki Nakagawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideki Enokida
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
- * E-mail:
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Maeda Y, Koga A, Ishizaki M, Hidaka H, Ando Y. P.20.5 Muscle regeneration modification by mesenchymal cells: A novel cell therapy for muscular degeneration. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.695] [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: 11/26/2022]
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Yamasaki T, Seki N, Yoshino H, Itesako T, Yamada Y, Tatarano S, Hidaka H, Yonezawa T, Nakagawa M, Enokida H. Tumor-suppressive microRNA-1291 directly regulates glucose transporter 1 in renal cell carcinoma. Cancer Sci 2013; 104:1411-9. [PMID: 23889809 DOI: 10.1111/cas.12240] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 07/09/2013] [Accepted: 07/21/2013] [Indexed: 12/25/2022] Open
Abstract
Our recent studies of microRNA (miRNA) expression signatures demonstrated that microRNA-1291 (miR-1291) was significantly downregulated in renal cell carcinoma (RCC) clinical specimens and was a putative tumor-suppressive miRNA in RCC. The aim of the present study was to investigate the functional significance of miR-1291 in cancer cells and to identify novel miR-1291-mediated cancer pathways and target genes in RCC. Expression of miR-1291 was significantly downregulated in RCC tissues compared with adjacent non-cancerous tissues. Restoration of mature miR-1291 in RCC cell lines (A498 and 786-O) revealed significant inhibition of cell proliferation, migration and invasion, suggesting that miR-1291 functioned as a tumor suppressor. To identify miR-1291-mediated molecular pathways and targets, we used gene expression analysis (expression of RCC clinical specimens and miR-1291-transfected A498 cells) and in silico database analysis. Our data demonstrated that 79 signaling pathways were significantly regulated by tumor-suppressive miR-1291 in RCC cells. Moreover, solute career family 2 member 1 (SLC2A1) was a candidate target of miR-1291 regulation. The SLC2A1 gene provides instructions for producing glucose transporter protein type 1 (GLUT1). Luciferase reporter assays showed that miR-1291 directly regulated SLC2A1/GLUT1. In RCC clinical specimens, the expression of SLC2A1/GLUT1 mRNA was significantly higher in cancer tissues than in non-cancerous tissues. A significant inverse correlation was recognized between SLC2A1/GLUT1 and miR-1291 expression (r = -0.55, P < 0.0001). Loss of tumor-suppressive miR-1291 enhanced RCC cell proliferation, migration and invasion through targeting SLC2A1/GLUT1. The identification of novel tumor-suppressive miR-1291-mediated molecular pathways and targets has provided new insights into RCC oncogenesis and metastasis.
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Affiliation(s)
- Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Hongo M, Hidaka H, Sakaguchi S, Nakanishi K, Terasawa F, Izawa A, Yazaki Y, Ikeda U. Serum high-density lipoprotein cholesterol level and lifestyle habits among Japanese junior high school students. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1600] [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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Chiyomaru T, Yamamura S, Fukuhara S, Hidaka H, Majid S, Saini S, Arora S, Deng G, Shahryari V, Chang I, Tanaka Y, Tabatabai ZL, Enokida H, Seki N, Nakagawa M, Dahiya R. Abstract 4161: Genistein inhibits prostate cancer through activation of tumor suppressor microRNA-574-3p. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-4161] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Genistein has been shown to inhibit various cancers but its mechanism of action is still unknown. In this study, we tested the hypothesis that genistein can inhibit prostate cancer (PCa) through modulation of microRNA (miRNAs) using various in vitro models. We also tested the functional significance of miRNAs in PCa cell lines and clinical significance of miRNAs in different stages and grades of PCa.
Methods: Subconfluent cells (60-70% confluent) were treated with genistein (25 μM). Genistein administered everyday along with a change of medium, and the cells were grown for 96 h. The miRNA microarray analysis was carried out and analyzed by Phalanx Biotech using the human v3 miRNA OneArray platform that is designed to contain 100% of miRBase Sequence Database Release 17.0. The expression levels of miR-574-3p were analyzed by TaqMan quantitative real-time PCR and normalized to RNU48. The 48 clinical specimens were obtained from patients in San Francisco Veterans Affairs Medical Center from 1998 to 2004. For gain-of-function assay, cell proliferation (MTS assay), migration (wound healing assay), invasion (matrigel invasion assay) and apoptosis (flow cytometry analysis) were evaluated in human PCa cell lines, PC3 and DU145. Predicted target genes and their target miRNA binding site seed regions were investigated using TargetScan. To identify the biological processes or pathways potentially regulated by miR-574-3p, we performed GeneCodis analysis. To identify networks among the miRNAs and their target genes, we analyzed and characterized those genes in KEGG pathway categories.
Results: Using miRNA microarray analysis and real-time RT-PCR we observed that miR-574-3p was significantly up-regulated in PCa cells treated with genistein compared with vehicle control. The expression of miR-574-3p was significantly lower in PCa cell lines and clinical PCa tissues compared with normal prostate cells (RWPE-1) and adjacent normal tissues. Low expression level of miR-574-3p was correlated with advanced tumor stage and higher Gleason score in PCa specimens. Re-expression of miR-574-3p in PCa cells significantly inhibited cell proliferation, migration and invasion. miR-574-3p restoration induced apoptosis through reducing Bcl-xL and activating caspase-9 and caspase-3. Using GeneCodis software analysis, several pathways affected by miR-574-3p were identified, such as ‘Pathways in cancer’, ‘Jak-STAT signaling pathway’, and ‘Wnt signaling pathway’. Luciferase reporter assays demonstrated that miR-574-3p directly binds to the 3’ UTR of several target genes (such as RAC1, EGFR and EP300) that are components of ‘Pathways in cancer’.
Conclusions: Our results show that genistein up-regulates tumor suppressor miR-574-3p expression targeting several cell signaling pathways. These findings enhance understanding of how genistein regulates with miRNA in PCa.
Citation Format: Takeshi Chiyomaru, Soichiro Yamamura, Shinichiro Fukuhara, Hideo Hidaka, Shahana Majid, Sharanjot Saini, Sumit Arora, Guoren Deng, Varahram Shahryari, Inik Chang, Yuichiro Tanaka, Z. Laura Tabatabai, Hideki Enokida, Naohiko Seki, Masayuki Nakagawa, Rajvir Dahiya. Genistein inhibits prostate cancer through activation of tumor suppressor microRNA-574-3p. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 4161. doi:10.1158/1538-7445.AM2013-4161
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Affiliation(s)
| | | | | | - Hideo Hidaka
- 2Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | | | | | | | | | | | - Inik Chang
- 1UCSF VA Medical Ctr., San Francisco, CA
| | | | | | - Hideki Enokida
- 2Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Naohiko Seki
- 3Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masayuki Nakagawa
- 2Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Enokida H, Yamasaki T, Yoshino H, Hidaka H, Itesako T, Nakagawa M, Seki N. Abstract 4189: Tumor suppressive microRNA-218 regulates oncogenes of focal adhesion pathways in renal cell carcinoma. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-4189] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
INTRODUCTION&OBJECTIVES: Our recent microRNA (miRNA) expression signature of renal cell carcinoma (RCC) revealed downregulation of miR-218 in RCC, suggesting that it might be a tumor suppressor. The aim of this study is to investigate the functional significance of miR-218 and to identifymiR-218-mediated cancer pathways in RCC.
METHODS: We evaluated miR-218 expression in 33 RCC clinical specimens and adjacent normal kidney tissues by stem-loop RT-PCR. We performed gain-of-function studies (cell migration and cell invasion assays) by using miR-218 transfectants (TFs). Oligo-microarray analyses of the miR-218 TFs and the RCC specimens were carried out to identify molecular targets of miR-218. According to GENECODIS software, we focused on the “focal adhesion”pathway, in which caveolin-2 (CAV2) was a candidate target gene. A luciferase reporter assay was performed to determine miR-218binding sites with CAV2 3’UTR. Loss-of-function assays using si-CAV2 were performed to investigate the functional significance of CAV2. The expression of CAV2 mRNA and protein was evaluated by qRT-PCR and immunohistochemistry. Furthermore, to investigate signaling pathways regulated by CAV2, we performed gene expression analysis of si-CAV2TFs.
RESULTS: The expression of miR-218 was significantly reduced in the RCC specimens. Significant inhibitions of cell migration and invasion were observed in the miR-218 TFs. Gene expression analysis showed that 615 genes were downregulated in the miR-218 TFs. The GENECODIS software revealed that miR-218 appeared to regulate 25 pathways (P<0.0001). In these pathways, we focused on ten genes in “focal adhesion” and seven genes in “tight junction”. CAV2 was the most upregulated gene among the genes related to these pathways by using available data sets (GSE36895 and GSE22541) in gene expression omnibus (GEO). Luciferase reporter assay showed that CAV2 was directly regulated by miR-218. Silencing study of CAV2 demonstrated significant inhibition of cell migration and invasion. The mRNA and protein expression of CAV2 were significantly up-regulated in RCC specimens. Gene expression analysis of si-CAV2 TFs revealed that CAV2 might control 15 pathways including “tight junction” pathway, containing pro-metastatic genes such as claudin-1, AKT3 and R-Ras2.
CONCLUSION: Tumor suppressive miR-218contributes to inhibition of cell migration and invasion through regulating focal adhesion pathway, especially CAV2 in RCC. This is the first report that CAV2 contributes to metastatic processes in RCC.
Citation Format: Hideki Enokida, Takeshi Yamasaki, Hirofumi Yoshino, Hideo Hidaka, Toshihiko Itesako, Masayuki Nakagawa, Naohiko Seki. Tumor suppressive microRNA-218 regulates oncogenes of focal adhesion pathways in renal cell carcinoma. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 4189. doi:10.1158/1538-7445.AM2013-4189
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Affiliation(s)
- Hideki Enokida
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Yamasaki
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hirofumi Yoshino
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Hidaka
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Toshihiko Itesako
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masayuki Nakagawa
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Naohiko Seki
- 2Department of Functional Genomics, Graduate School of Medicine, Chiba University, Chiba, Japan
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Chiyomaru T, Yamamura S, Fukuhara S, Hidaka H, Majid S, Saini S, Arora S, Deng G, Shahryari V, Chang I, Tanaka Y, Tabatabai Z, Enokida H, Seki N, Nakagawa M, Dahiya R. 327 GENISTEIN INHIBITS PROSTATE CANCER THROUGH ACTIVATION OF TUMOR SUPPRESSOR MICRORNA-574-3P. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1712] [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: 11/17/2022]
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Yonezawa T, Enokida H, Yoshino H, Hidaka H, Yamasaki T, Itesako T, Seki N, Nakagawa M. 461 MICRORNA-29 FAMILY AS TUMOR SUPPRESSIVE MICRORNAS IN RENAL CELL CARCINOMA: MICRORNA-29A INHIBITS CELL MIGRATION AND INVASION TARGETING FOCAL ADHESION AND ECM PATHWAYS. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1852] [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: 11/29/2022]
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Yoshino H, Seki N, Hidaka H, Yamasaki T, Idesako T, Yonezawa T, Enokida H, Nakagawa M. 456 IDENTIFICATION OF EMT-RELATED MIRNA-200 FAMILY REGULATED NOVEL CANCER PATHWAYS IN RENAL CELL CARCINOMA. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1847] [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: 11/28/2022]
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Yoshino H, Seki N, Hidaka H, Yamasaki T, Idesako T, Yonezawa T, Enokida H, Nakagawa M. 918 MICRORNA EXPRESSION SIGNATURES IN BLADDER CANCER: MICRORNA-145 FUNCTION AS A TUMOR SUPPRESSOR THROUGH SUPPRESSION OF MAPK AND ERBB SIGNALING PATHWAYS. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.495] [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: 10/27/2022]
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Yamasaki T, Seki N, Yoshino H, Hidaka H, Idesako T, Enokida H, Nakagawa M. 462 TUMOR SUPPRESSIVE MICRORNA-218 REGULATES ONCOGENES OF FOCAL ADHESION PATHWAYS IN RENAL CELL CARCINOMA. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1853] [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: 10/27/2022]
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Yamasaki T, Seki N, Yoshino H, Hidaka H, Enokida H, Nakagawa M. 463 TUMOR SUPPRESSIVE MICRORNA-138 CONTRIBUTES TO INHIBITION OF BOTH CELL MIGRATION AND INVASION THROUGH TARGETING VIMENTIN IN RENAL CELL CARCINOMA. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1854] [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: 10/27/2022]
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Itesako T, Enokida H, Yonezawa T, Yamasaki T, Hidaka H, Yoshino H, Seki N, Nakagawa M. 927 MOLECULAR ROLE OF MIR-195/497 CLUSTER IN HUMAN BLADDER CANCER BASED ON MULTIPLE DATASET OF MICRORNA EXPRESSION SIGNATURES BY DEEP SEQUENCING. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.504] [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: 10/27/2022]
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19
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Hidaka H, Yoshino H, Enokida H, Yamasaki T, Itesako T, Yonezawa T, Seki N, Nakagawa M. 464 TUMOR-SUPPRESSIVE MIR-135A INHIBITS CANCER CELL PROLIFERATION BY TARGETING THE C-MYC ONCOGENE IN RENAL CELL CARCINOMA. J Urol 2013. [DOI: 10.1016/j.juro.2013.02.1855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Shimamura M, Hidaka H. Therapeutic potential of cholesteryl O-acyl α-glucoside found in Helicobacter pylori. Curr Med Chem 2013; 19:4869-74. [PMID: 22934809 DOI: 10.2174/092986712803341502] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 08/13/2012] [Accepted: 08/23/2012] [Indexed: 11/22/2022]
Abstract
Steryl glycosides are derivatives of sterols where the 3β-hydroxy group is glycosylated. Some of them are further converted to steryl O-acyl glycosides. Steryl glycosides and their derivatives are widely distributed in plants, algae, and fungi, but are relatively rarely distributed in bacteria and animals. Accumulating evidence suggests that glycosylation of sterols not only modifies physicochemical properties of cell membranes but also alters immunogenicity of the cells. Helicobacter pylori, that colonizes the stomach and causes gastric diseases, is auxotrophic for cholesterol, so that it extracts this lipid from plasma membranes of epithelial cells of the host stomach. Since incorporation of cholesterol promotes immune responses of the host, Helicobacter pylori converts cholesterol to cholesteryl glucoside (ChG) and then to cholesteryl 6'-O-acyl glucoside (ChAcG) to evade the immune surveillance. We have found that ChAcG thus produced is specifically recognized by invariant Vα14-Jα18 TCR(+) (Vα14) NKT cells in a CD1-dependent manner. We have also found that activation of Vα14 NKT cells by administration of ChAcG retains homeostasis of immunity upon exposure to allergens and reduces the incidence of allergy. In this article, overview of immunological functions of steryl glycosides with an emphasis on the immunoregulatory functions of ChAcG, is demonstrated.
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Affiliation(s)
- M Shimamura
- Tsukuba Research Center for Interdisciplinary Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan.
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Chiyomaru T, Yamamura S, Fukuhara S, Hidaka H, Majid S, Saini S, Arora S, Deng G, Shahryari V, Chang I, Tanaka Y, Tabatabai ZL, Enokida H, Seki N, Nakagawa M, Dahiya R. Genistein up-regulates tumor suppressor microRNA-574-3p in prostate cancer. PLoS One 2013; 8:e58929. [PMID: 23554959 PMCID: PMC3595226 DOI: 10.1371/journal.pone.0058929] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [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: 10/16/2012] [Accepted: 02/08/2013] [Indexed: 12/25/2022] Open
Abstract
Genistein has been shown to inhibit cancers both in vitro and in vivo, by altering the expression of several microRNAs (miRNAs). In this study, we focused on tumor suppressor miRNAs regulated by genistein and investigated their function in prostate cancer (PCa) and target pathways. Using miRNA microarray analysis and real-time RT-PCR we observed that miR-574-3p was significantly up-regulated in PCa cells treated with genistein compared with vehicle control. The expression of miR-574-3p was significantly lower in PCa cell lines and clinical PCa tissues compared with normal prostate cells (RWPE-1) and adjacent normal tissues. Low expression level of miR-574-3p was correlated with advanced tumor stage and higher Gleason score in PCa specimens. Re-expression of miR-574-3p in PCa cells significantly inhibited cell proliferation, migration and invasion in vitro and in vivo. miR-574-3p restoration induced apoptosis through reducing Bcl-xL and activating caspase-9 and caspase-3. Using GeneCodis software analysis, several pathways affected by miR-574-3p were identified, such as 'Pathways in cancer', 'Jak-STAT signaling pathway', and 'Wnt signaling pathway'. Luciferase reporter assays demonstrated that miR-574-3p directly binds to the 3' UTR of several target genes (such as RAC1, EGFR and EP300) that are components of 'Pathways in cancer'. Quantitative real-time PCR and Western analysis showed that the mRNA and protein expression levels of the three target genes in PCa cells were markedly down-regulated with miR-574-3p. Loss-of-function studies demonstrated that the three target genes significantly affect cell proliferation, migration and invasion in PCa cell lines. Our results show that genistein up-regulates tumor suppressor miR-574-3p expression targeting several cell signaling pathways. These findings enhance understanding of how genistein regulates with miRNA in PCa.
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Affiliation(s)
- Takeshi Chiyomaru
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Soichiro Yamamura
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Shinichiro Fukuhara
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Hideo Hidaka
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Shahana Majid
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Sharanjot Saini
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Sumit Arora
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Guoren Deng
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Varahram Shahryari
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Inik Chang
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Yuichiro Tanaka
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Z. Laura Tabatabai
- Department of Pathology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
| | - Hideki Enokida
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masayuki Nakagawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Rajvir Dahiya
- Department of Urology, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
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22
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Yamasaki T, Seki N, Yoshino H, Itesako T, Hidaka H, Yamada Y, Tatarano S, Yonezawa T, Kinoshita T, Nakagawa M, Enokida H. MicroRNA-218 inhibits cell migration and invasion in renal cell carcinoma through targeting caveolin-2 involved in focal adhesion pathway. J Urol 2013; 190:1059-68. [PMID: 23454155 DOI: 10.1016/j.juro.2013.02.089] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2013] [Indexed: 11/16/2022]
Abstract
PURPOSE Our microRNA expression signature of renal cell carcinoma revealed that miR-218 expression was significantly decreased in cancer tissues, suggesting that miR-218 is a candidate tumor suppressor. We investigated the functional significance of miR-218 in cancer cells and identified what are to our knowledge novel miR-218 mediated cancer pathways in renal cell carcinoma. MATERIALS AND METHODS Gain of function studies using mature miR-218 were performed to investigate cell proliferation, migration and invasion in the A498 and 786-O renal cell carcinoma cell lines. To identify miR-218 mediated molecular pathways and responsible genes in renal cell carcinoma, we used gene expression and in silico database analyses. Loss of function assays were performed to investigate the functional significance of miR-218 target genes. RESULTS Restoration of mature miR-218 significantly inhibited RCC cell proliferation, migration and invasion. Gene expression studies and luciferase reporter assays showed that CAV2 involved in the focal adhesion pathway was directly regulated by miR-218. A silencing study of CAV2 revealed significant inhibition of cell proliferation, migration and invasion. CAV2 mRNA and protein expression was significantly up-regulated in renal cell carcinoma clinical specimens. CONCLUSIONS Loss of tumor suppressive miR-218 enhances cancer cell migration and invasion through dysregulation of the focal adhesion pathway, especially CAV2 as an oncogenic function in renal cell carcinoma. Tumor suppressive microRNA mediated cancer pathways and responsible genes provide new insights into the potential mechanisms of renal cell carcinoma oncogenesis and metastasis.
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Affiliation(s)
- Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Yamada Y, Hidaka H, Seki N, Yoshino H, Yamasaki T, Itesako T, Nakagawa M, Enokida H. Tumor-suppressive microRNA-135a inhibits cancer cell proliferation by targeting the c-MYC oncogene in renal cell carcinoma. Cancer Sci 2012; 104:304-12. [PMID: 23176581 DOI: 10.1111/cas.12072] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 11/02/2012] [Accepted: 11/20/2012] [Indexed: 12/30/2022] Open
Abstract
Recently, many studies have suggested that microRNAs (miRNAs) are involved in cancer cell development, invasion, and metastasis of various types of human cancers. In a previous study, miRNA expression signatures from renal cell carcinoma (RCC) revealed that expression of microRNA-135a (miR-135a) was significantly reduced in cancerous tissues. The aim of this study was to investigate the functional significance of miR-135a and to identify miR-135a-mediated molecular pathways in RCC cells. Restoration of mature miR-135a significantly inhibited cancer cell proliferation and induced G0 /G1 arrest in the RCC cell lines caki2 and A498, suggesting that miR-135a functioned as a potential tumor suppressor. We then examined miR-135a-mediated molecular pathways using genome-wide gene expression analysis and in silico analysis. A total of 570 downregulated genes were identified in miR-135a transfected RCC cell lines. To investigate the biological significance of potential miR-135a-mediated pathways, we classified putative miR-135a-regulated genes according to the Kyoto Encyclopedia of Genes and Genomics pathway database. From our in silico analysis, 25 pathways, including the cell cycle, pathways in cancer, DNA replication, and focal adhesion, were significantly regulated by miR-135a in RCC cells. Moreover, based on the results of this analysis, we investigated whether miR-135a targeted the c-MYC gene in RCC. Gain-of-function and luciferase reporter assays showed that c-MYC was directly regulated by miR-135a in RCC cells. Furthermore, c-MYC expression was significantly upregulated in RCC clinical specimens. Our data suggest that elucidation of tumor-suppressive miR-135a-mediated molecular pathways could reveal potential therapeutic targets in RCC.
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Affiliation(s)
- Yasutoshi Yamada
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Kinoshita T, Hanazawa T, Nohata N, Kikkawa N, Enokida H, Yoshino H, Yamasaki T, Hidaka H, Nakagawa M, Okamoto Y, Seki N. Tumor suppressive microRNA-218 inhibits cancer cell migration and invasion through targeting laminin-332 in head and neck squamous cell carcinoma. Oncotarget 2012; 3:1386-400. [PMID: 23159910 PMCID: PMC3717800 DOI: 10.18632/oncotarget.709] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 11/05/2012] [Indexed: 12/18/2022] Open
Abstract
Recent our microRNA (miRNA) expression signature revealed that expression of microRNA-218 (miR-218) was reduced in cancer tissues, suggesting a candidate of tumor suppressor in head and neck squamous cell carcinoma (HNSCC). The aim of this study was to investigate the functional significance of miR-218 and its mediated moleculer pathways in HNSCC. Restoration of miR-218 in cancer cells led to significant inhibition of cell migration and invasion activities in HNSCC cell lines (FaDu and SAS). Genome-wide gene expression analysis of miR-218 transfectants and in silico database analysis showed that focal adhesion pathway was a promising candidate of miR-218 target pathways. The laminins are an important and biologically active part of the basal lamina, the function of that are various such as influencing cell differentiation, migration and adhesion as well as proliferation and cell survival. Interestingly, all components of laminin-332 (LAMA3, LAMB3 and LAMC2) are listed on the candidate genes in focal adhesion pathway. Furthermore, we focused on LAMB3 which has a miR-218 target site and gene expression studies and luciferase reporter assays showed that LAMB3 was directly regulated by miR-218. Silencing study of LAMB3 demonstrated significant inhibition of cell migration and invasion. In clinical specimens with HNSCC, the expression levels of laminin-332 were significantly upregulated in cancer tissues compared to adjacent non-cancerous tissues. Our analysis data showed that tumor suppressive miR-218 contributes to cancer cell migration and invasion through regulating focal adhesion pathway, especially laminin-332. Tumor suppressive miRNA-mediated novel cancer pathways provide new insights into the potential mechanisms of HNSCC oncogenesis.
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Affiliation(s)
- Takashi Kinoshita
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana Chuo-ku, Chiba, Japan
- Department of Otorhinolaryngology / Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Toyoyuki Hanazawa
- Department of Otorhinolaryngology / Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Nijiro Nohata
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana Chuo-ku, Chiba, Japan
- Department of Otorhinolaryngology / Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naoko Kikkawa
- Department of Otorhinolaryngology / Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Hideki Enokida
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hirofumi Yoshino
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Hidaka
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masayuki Nakagawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology / Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana Chuo-ku, Chiba, Japan
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Yamasaki T, Seki N, Yamada Y, Yoshino H, Hidaka H, Chiyomaru T, Nohata N, Kinoshita T, Nakagawa M, Enokida H. Tumor suppressive microRNA‑138 contributes to cell migration and invasion through its targeting of vimentin in renal cell carcinoma. Int J Oncol 2012; 41:805-17. [PMID: 22766839 PMCID: PMC3582944 DOI: 10.3892/ijo.2012.1543] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 05/30/2012] [Indexed: 12/16/2022] Open
Abstract
Many studies have recently suggested that microRNAs (miRNAs) contribute to the development of various types of human cancers as well as to their invasive and metastatic capacities. Previously, our miRNA expression signature of renal cell carcinoma (RCC) revealed that microRNA‑138 (miR‑138) was significantly reduced in cancer cells. The aim of the present study was to investigate the functional significance of miR‑138 and to identify its target genes in RCC cells. Restoration of mature miR‑138 in two RCC cell lines (A498 and 786‑O) caused changes in the bleb-like cell morphology, characteristics of the epithelial-mesenchymal transition (EMT). Restoration also significantly inhibited migration and invasion in the two RCC cell lines, suggesting that miR‑138 functions as a tumor suppressor. Genome-wide gene expression analysis (miR‑138 transfectants and RCC clinical specimens) and TargetScan database studies showed that vimentin (VIM) is a promising candidate target gene of miR‑138. It is well known that VIM is one of the most widely expressed mammalian intermediate filament proteins. Recent studies showed that VIM functions in cell adhesion, migration, survival and cell signaling processes via dynamic assembly/disassembly in cancer cells. We focused on VIM and investigated whether VIM was regulated by tumor suppressive miR‑138 and contributed to cancer cell migration and invasion in RCC cells. Restoration of miR‑138 in RCC cell lines suppressed VIM expression at both the mRNA and protein levels. Silencing studies of VIM in RCC cell lines demonstrated significant inhibition of cell migration and invasion activities in si-VIM transfectants. In clinical specimens of RCC, the expression levels of VIM were significantly upregulated in cancer tissues compared to adjacent non-cancerous tissues. Furthermore, immunohistochemistry showed that VIM expression levels in RCC specimens were significantly higher than those in normal renal tissues. These data suggest that VIM may function as an oncogene and is regulated by tumor suppressive miR‑138. The existence of a tumor suppressive miR‑138-mediated oncogenic pathway provides new insights into the potential mechanisms of RCC oncogenesis and metastasis.
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Affiliation(s)
- Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Enokida H, Yoshino H, Yamasaki T, Hidaka H, Chiyomaru T, Nohata N, Seki N, Nakagawa M. Abstract 2284: MIR-200 family as EMT related microRNA in renal cell carcinoma. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-2284] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
(Background) Renal cell carcinoma (RCC) is the most common neoplasm of the adult kidney, and clear cell RCC represents the most common renal cancer histology. However surgical treatment is provided for localized disease, relapse or metastasis of the patient is caused in a considerable ratio. At present, metastatic RCC is difficult to treat and the process of metastasis is not well understood. Therefore, it is crucial to find molecular mechanisms based on recent genome analysis in RCC oncogenesis and metastasis. Based on the microRNA (miRNA) expression signature of RCC revealed that miR-200 family significantly reduced in RCC cells. The miR-200 family (miR-200b, miR-200a and miR-429 are encoded by single polycistronic transcript on chromosome 1p36.33 and miR-200c and miR-141 are cluster on chromosome 12 p13.31) of miRNA plays a major role to epithelial to mesenchymal transition (EMT) by targeting transcription repressors, zinc-finger E-box binding homeobox (ZEB1) and ZEB2. In this study, we investigated the functional significance of miR-200 family and identified the novel cancer pathways in RCC. (Methods) Cell proliferation and invasion assay was performed by restoration of mature miR-200 family (miR-200a, miR-200b, miR-200c, miR-429 and miR-141) in RCC cell lines. Genome-wide gene expression analysis was performed to identify the molecular networks of miR-200 family by microarray analysis. (Results) The mRNA expression levels of ZEB1 and ZEB2 were significantly decreased by miR-200 family (miR-200a, miR-200b, miR-200c, miR-429 and miR-141) transfectantion in RCC cells. Restoration of each miRNAs significantly inhibited cell proliferation and invasion in RCC cells. Interestingly, the morphological changes were recognized by miR-200 family transfection in RCC cell lines. Gene expression analysis showed more than ten candidate genes were searched for miR-200 family targets and these genes were up-regulated in RCC clinical specimens. (Conclusions) Our data suggest that miR-200 family function as tumor suppressors in RCC. EMT-related tumor suppressive miR-200 family mediates novel molecular targets provide new insights into the potential mechanisms of RCC oncogenesis and metastasis.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 2284. doi:1538-7445.AM2012-2284
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Affiliation(s)
- Hideki Enokida
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hirofumi Yoshino
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Yamasaki
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Hidaka
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Chiyomaru
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Nijiro Nohata
- 2Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naohiko Seki
- 2Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masayuki Nakagawa
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Yoshino H, Enokida H, Yamasaki T, Hidaka H, Chiyomaru T, Nohata N, Seki N, Nakagawa M. Abstract 1103: Molecular targets regulated by tumor suppressive microRNA-1 and microRNA-133a in bladder cancer. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-1103] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
(Background) Bladder cancer (BC) is the fourth most common tumor diagnosed and the second most common cancer of the genitourinary tract in Japan. Though there have been significant advances in treatment, including surgical technique and adjuvant chemotherapy, approximately 70% of first diagnosed BC recurs after treatment, and 10% to 15% of recurrent tumors proceed to muscle invasion and metastasis. Therefore, it is crucial to find a new strategy for BC diagnosis and treatment based on recent genome analysis in BC oncogenesis. Our expression signatures of human cancer including bladder cancer (BC) revealed that the expression of microRNA-1 (miR-1) and microRNA-133a (miR-133a) were significantly reduced in cancer cells. In human genome, miR-1 and miR-133a located same chromosomal regions (miR-1-2 and miR-133a-1 on 18q11.2, and miR-1-1 and miR-133a-2 on 20q13.33) called cluster. In this study, we investigated the functional significance of miR-1 and miR-133a and identify the novel molecular targets regulated by miR-1 and miR-133a commonly in BC. (Methods) Cell proliferation, invasion, migration and apoptosis assay was performed by restoration of mature miR-1 and/or miR-133a in BC cell lines. Genome-wide gene expression analysis was performed to identify the molecular networks of miR-1 and miR-133a by microarray technique. A luciferase reporter assay was used to identify the actual binding site between miR-1 and miR-133a and its candidate target genes. Cell proliferation, invasion, migration and apoptosis assays were performed to investigate the targets genes in BC cell lines. To investigate of expression of target genes, immunohistochemistry was performed by using BC tissue microarray. (Results) Restoration of miR-1 and/or miR-133a significantly inhibited cell proliferation migration and invasion in cancer cells. Apoptosis assay showed that significant apoptotic cells were induced by miR-1 and/or miR-133a transfection. Genome-wide molecular targets search and luciferase reporter assay showed that Transgelin2 (TAGLN2), prothymosin-alpha (PTMA) and purine nucleoside phosphorylase (PNP) were directly regulated by miR-1 and miR-133a commonly. Silencing of the target genes studies demonstrated significant inhibition of cell proliferation and invasion, and increase of apoptosis in BC cells. Immunohistochemistry showed that TAGLN2 and PTMA expression level was significantly higher in BC than normal bladder epitheliums. (Conclusions) miR-1 and miR-133a function as tumor suppressor in BC. TAGLN2, PTMA and PNP were directly regulated by tumor suppressive miR-1 and miR-133a commonly. These genes may function as oncogenes contributed to cell proliferation and invasion in BC. Tumor suppressive miR-1 and miR-133a mediates novel molecular targets provide new insights into the potential mechanisms of BC oncogenesis.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 1103. doi:1538-7445.AM2012-1103
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Affiliation(s)
- Hirofumi Yoshino
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideki Enokida
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Yamasaki
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Hidaka
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takeshi Chiyomaru
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Nijiro Nohata
- 2Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naohiko Seki
- 2Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masayuki Nakagawa
- 1Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Enokida H, Yamada Y, Yoshino H, Tatarano S, Hidaka H, Yamasaki T, Chiyomaru T, Kojima S, Seki N, Nakagawa M. 1270 MICRORNAS DETECTION IN URINE AS DIAGNOSTIC MARKERS AND PREDICTORS OF RECURRENCE OF NON-MUSCLE INVASIVE BLADDER CANCER. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.1602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Hidaka H, Yoshino H, Enokida H, Yamasaki T, Tatarano S, Seki N, Nakagawa M. 431 MOLECULAR PATHWAYS REGULATED BY TUMOR SUPPRESSIVE MICRORNAS IN RENAL CELL CARCINOMA BASED ON MICRORNA EXPRESSION SIGNATURE. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.498] [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]
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30
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Yoshino H, Enokida H, Yamasaki T, Hidaka H, Chiyomaru T, Nohata N, Seki N, Nakagawa M. 142 EMT RELATED MICRORNA-200 FAMILY FUNCTION AS TUMOR SUPPRESSORS IN RENAL CELL CARCINOMA. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.192] [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: 10/28/2022]
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31
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Tatarano S, Chiyomaru T, Enokida H, Yoshino H, Hidaka H, Yamasaki T, Seki N, Nakagawa M. 878 INTEGRATED ANALYSIS OF TWO GENOME PROFILES (CGH AND MICRORNA EXPRESSION SIGNATURE) REVELED MIR-218 AND MIR-574-3P AS TUMOR SUPPRESSORS IN BLADDER CANCER. J Urol 2012. [DOI: 10.1016/j.juro.2012.02.973] [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: 11/15/2022]
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32
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Kinoshita T, Nohata N, Watanabe-Takano H, Yoshino H, Hidaka H, Fujimura L, Fuse M, Yamasaki T, Enokida H, Nakagawa M, Hanazawa T, Okamoto Y, Seki N. Actin-related protein 2/3 complex subunit 5 (ARPC5) contributes to cell migration and invasion and is directly regulated by tumor-suppressive microRNA-133a in head and neck squamous cell carcinoma. Int J Oncol 2012; 40:1770-8. [PMID: 22378351 DOI: 10.3892/ijo.2012.1390] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 01/30/2012] [Indexed: 01/11/2023] Open
Abstract
Our expression signatures of human cancers including head and neck squamous cell carcinoma (HNSCC) demonstrated that downregulation of microRNA-133a (miR-133a) were frequently observed in cancer cells. The restoration of miR-133a in cancer cells revealed that it functions as a tumor suppressor. In this study, we investigated the novel molecular targets of miR-133a in HNSCC cancer cells and its oncogenic function, especially as it contributes to cancer cell migration and invasion. The genome-wide gene expression analysis and bioinformatics study showed that actin-related protein 2/3 complex subunit 5 (ARPC5) is a candidate target of miR-133a. Furthermore, luciferase reporter assay demonstrated that ARPC5 is directly regulated by miR-133a. Silencing of ARPC5 revealed significant inhibition of cell migration and invasion in HNSCC cell lines, SAS, HSC3 and IMC-3. In HSC3 cells, restoration of miR-133a or silencing ARPC5 led to a reorganization of the actin cytoskeleton and a subsequent change in cell morphology to a round, bleb-like shape. The expression levels of ARPC5 were significantly higher in HNSCC tissues than in non-cancer tissues. Immunohistochemistry showed that the levels of ARPC5 expression were significantly higher in invasive cancer cells. ARPC5 contributed to cancer cell migration and invasion in HNSCC and this gene was directly regulated by miR-133a. Our analysis of novel tumor-suppressive miR‑133a-mediated cancer pathways provides new insights into the potential mechanisms of HNSCC oncogenesis.
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Affiliation(s)
- Takashi Kinoshita
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
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33
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Yamasaki T, Yoshino H, Enokida H, Hidaka H, Chiyomaru T, Nohata N, Kinoshita T, Fuse M, Seki N, Nakagawa M. Novel molecular targets regulated by tumor suppressors microRNA-1 and microRNA-133a in bladder cancer. Int J Oncol 2012; 40:1821-30. [PMID: 22378464 DOI: 10.3892/ijo.2012.1391] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Accepted: 01/26/2012] [Indexed: 01/11/2023] Open
Abstract
Our expression signatures of human cancer including bladder cancer (BC) revealed that the expression of microRNA-1 (miR-1) and microRNA-133a (miR-133a) is significantly reduced in cancer cells. In the human genome, miR-1 and miR-133a are located on the same chromosomal region (miR-1-2 and miR-133a-1 on 18q11.2, and miR-1-1 and miR-133a-2 on 20q13.33) called cluster. In this study, we identified the novel molecular targets commonly regulated by miR-1 and miR-133a in BC. Genome-wide molecular target search and luciferase reporter assays showed that prothymosin-α (PTMA) and purine nucleoside phosphorylase (PNP) are directly regulated by miR-1 and miR-133a. Silencing of these two genes significantly inhibited cell proliferation and invasion, and increased apoptosis in BC cells. Immunohistochemistry showed that PTMA expression levels were significantly higher in BC compared to normal bladder epitheliums. PTMA and PNP were identified as new target genes regulated by the miR-1 and miR-133a cluster in BC. These genes may function as oncogenes contributing to cell proliferation and invasion in BC. Tumor suppressive miR-1 and miR-133a-mediated novel molecular targets may provide new insights into the potential mechanisms of BC oncogenesis.
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Affiliation(s)
- Takeshi Yamasaki
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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34
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Tatarano S, Chiyomaru T, Kawakami K, Enokida H, Yoshino H, Hidaka H, Nohata N, Yamasaki T, Gotanda T, Tachiwada T, Seki N, Nakagawa M. Novel oncogenic function of mesoderm development candidate 1 and its regulation by MiR-574-3p in bladder cancer cell lines. Int J Oncol 2011; 40:951-9. [PMID: 22179486 PMCID: PMC3584521 DOI: 10.3892/ijo.2011.1294] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [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: 09/23/2011] [Accepted: 11/10/2011] [Indexed: 11/12/2022] Open
Abstract
Our previous studies suggested that microRNA (miR)-574-3p is a candidate tumor suppressor microRNA (miRNA) in human bladder cancer (BC). Among 17 down-regulated miRNAs, miR-574-3p is located on chromosome 4p14 where we had identified a chromosomal loss region by array-CGH in BC cell lines. MiR-574-3p expression was down-regulated in BC cell lines. Gain-of-function analysis revealed that cell proliferation, migration and invasion were significantly inhibited in miR-574-3p-transfected BC cell lines. Flow cytometry analysis showed that cell apoptosis was induced in miR-574-3p transfectants. Oligo microarray analysis suggested that the mesoderm development candidate 1 (MESDC1) gene was a target gene in miR-574-3p transfectants. Luciferase assays revealed that miR-574-3p was directly bound to MESDC1 mRNA. MESDC1 is predicted to be a novel actin-binding protein located on chromosome 15q13. Although the gene is conserved among many species, its functional role is still unknown in both human malignancies and normal tissues. Loss-of-function studies demonstrated that cell proliferation, migration and invasion were significantly inhibited in si-MESDC1-transfected BC cell lines. Flow cytometry analysis showed that apoptosis was induced in si-MESDC1 transfectants. We are the first to demonstrate that miR-574-3p is a miRNA with tumor suppressor function and that MESDC1 (which has a potential oncogenic function in BC) may be targeted by miR-574-3p.
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Affiliation(s)
- Shuichi Tatarano
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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35
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Yoshino H, Enokida H, Chiyomaru T, Tatarano S, Hidaka H, Yamasaki T, Gotannda T, Tachiwada T, Nohata N, Yamane T, Seki N, Nakagawa M. Tumor suppressive microRNA-1 mediated novel apoptosis pathways through direct inhibition of splicing factor serine/arginine-rich 9 (SRSF9/SRp30c) in bladder cancer. Biochem Biophys Res Commun 2011; 417:588-93. [PMID: 22178073 DOI: 10.1016/j.bbrc.2011.12.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 12/02/2011] [Indexed: 01/04/2023]
Abstract
We have previously found that restoration of tumor suppressive microRNA-1 (miR-1), induced cell apoptosis in bladder cancer (BC) cell lines. However, the apoptosis mechanism induced by miR-1 was not fully elucidated. Alternative splicing of mRNA precursors provides cancer cells with opportunities to translate many oncogenic protein variants, which promote cell proliferation and survival under unpreferable condition for cancer development. Serine/arginine-rich (SR) protein family, which involved in alternative pre-mRNA splicing, plays a critical role for regulating apoptosis by splicing apoptosis-related genes. However, transcriptional regulation of SR proteins, themselves, has not been elucidated. In this study, we focused on splicing factor serine/arginine-rich 9 (SRSF9/SRp30c) on the basis of our previous genome-wide gene expression analysis using miR-1-transfected BC cell lines because putative target sites of miR-1 are existed in 3'-untranslated region (UTR) of SRSF9 mRNA. The expression levels of mRNA of SRSF9 were extremely reduced in the miR-1 transfectants. A luciferase activity significantly decreased in the transfectants suggesting that actual binding occurred between miR-1 and 3'UTR of SRSF9 mRNA. Loss-of-function assays demonstrated that significant inhibitions of cell proliferation, migration, and invasion were observed in the si-SRSF9 transfectants. Apoptosis assays demonstrated that cell apoptosis fraction increased and that caspase-3/7 was activated in the si-SRSF9 transfectants. Our data indicated that tumor suppressive miR-1 induces apoptosis through direct inhibition of SRSF9 in BC. The identification of molecular mechanisms between miRNAs and SR proteins could provide novel apoptosis pathways and their epigenetic regulations and offer new strategies for BC treatment.
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Affiliation(s)
- Hirofumi Yoshino
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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36
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Nakazawa T, Shibuya A, Takeuchi A, Shibata Y, Hidaka H, Okuwaki Y, Takada J, Tanaka Y, Watanabe M, Minamino T, Sakurai K, Koizumi W. Viral level is an indicator of long-term outcome of hepatitis B virus e antigen-negative carriers with persistently normal serum alanine aminotransferase levels. J Viral Hepat 2011; 18:e191-9. [PMID: 21692932 DOI: 10.1111/j.1365-2893.2010.01427.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The association between viral level and the long-term outcomes of hepatitis B virus (HBV) carriers who test negative for hepatitis B virus e antigen (HBeAg) but have persistently normal serum alanine aminotransferase levels (PNALT) remains unclear. We examined hepatocarcinogenesis, hepatitis reactivation, predictive factors and the time course of HBV DNA levels during follow-up in 104 HBeAg-negative Japanese carriers with PNALT. During a mean follow-up period of 6.4 ± 3.4 years, 5 patients (4.8%) had hepatocarcinogenesis and 14 (13.5%) had hepatitis reactivation. At 5 and 10 years, the cumulative rates of hepatocarcinogenesis were 2.4% and 9.9%, while those of hepatitis activation were 13.7% and 15.5%, respectively. An HBV DNA level of ≥5 log10 copies/mL was the sole predictor of hepatocarcinogenesis with a univariate analysis. An HBV DNA level of ≥5 log10 copies/mL and an alanine aminotransferase (ALT) level of >20 to ≤40 IU/L were independent predictors of hepatitis reactivation in a Cox model. Because there was no association between hepatocarcinogenesis and ALT activity, the HBV DNA level was considered an essential predictor. In addition, the baseline HBV DNA level was related to the future level and was not subject to wide fluctuations. Our results showed that an HBV DNA level of ≥5 log10 copies/mL predicts subsequent hepatocarcinogenesis and hepatitis reactivation in HBeAg-negative carriers with PNALT. As the baseline HBV DNA level reflects the future level, appropriate clinical management according to the viral level is expected to decrease future risk.
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Affiliation(s)
- T Nakazawa
- Department of Gastroenterology, Kitasato University East Hospital, Sagamihara, Japan.
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37
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Tatarano S, Chiyomaru T, Kawakami K, Enokida H, Yoshino H, Hidaka H, Yamasaki T, Kawahara K, Nishiyama K, Seki N, Nakagawa M. miR-218 on the genomic loss region of chromosome 4p15.31 functions as a tumor suppressor in bladder cancer. Int J Oncol 2011; 39:13-21. [PMID: 21519788 DOI: 10.3892/ijo.2011.1012] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 03/18/2011] [Indexed: 12/22/2022] Open
Abstract
Growing evidence suggests that microRNAs (miRNAs) are aberrantly expressed in many human cancers, and that they play significant roles in carcinogenesis and cancer progression. The identification of tumor suppressive miRNAs and their target genes could provide new insights into the mechanism of carcinogenesis. However, the genetic or epigenetic regulations of these miRNAs have not yet been fully elucidated in bladder cancer (BC). Chromosomal alterations of cancer cells give us important information for the identification of tumor suppressor genes. Our miRNA array-comparative genomic hybridization (CGH) analysis showed several miRNAs to be candidate tumor suppressors of BC. Our array-CGH analysis revealed that chromosome 4 was lost in all BC cell lines. We selected 19 miRNAs located on chromosome 4 and evaluated their expression levels in cancer cell lines as well as clinical samples. Gain-of-function analysis revealed that miR-218 inhibited BC cell proliferation, migration and invasion. Furthermore, flow cytometry analysis showed that it induced BC cell apoptosis. Genome-wide gene expression analysis showed that it targeted multiple oncogenes in BC. Our study is the first to demonstrate that miR-218 located on chrosomosme 4p15.31 is a tumor suppressive miRNA in BC. The identification of tumor suppressive miRNAs and their target genes on the basis of array-CGH analysis could provide new insights into the mechanisms of BC carcinogenesis.
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Affiliation(s)
- Shuichi Tatarano
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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38
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Tomiyama N, Hidaka M, Hidaka H, Kawano Y, Hanada N, Kawaguchi H, Arimori K, Nakamura C. Safety, efficacy and pharmacokinetics of S-1 in a hemodialysis patient with advanced gastric cancer. Cancer Chemother Pharmacol 2009; 65:807-9. [DOI: 10.1007/s00280-009-1216-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Accepted: 12/09/2009] [Indexed: 12/01/2022]
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39
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de Laeter JR, Böhlke JK, De Bièvre P, Hidaka H, Peiser HS, Rosman KJR, Taylor PDP. Errata: Atomic weights of the elements: Review 2000 (IUPAC Technical Report). PURE APPL CHEM 2009. [DOI: 10.1351/pac-rep-09-06-03_errata] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Errata: Atomic weights of the elements: Review 2000 (IUPAC Technical Report). (J.
R. de Laeter, J. K. Böhlke, P. De Bièvre, H. Hidaka, H. S.Peiser, K. J. R.
Rosman, and P. D. P. Taylor). Pure Appl.
Chem.75,683–800 (2003); doi:10.1351/pac200375060683.
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40
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Dhar SK, Kulkarni R, Hidaka H, Toda Y, Kotegawa H, Kobayashi TC, Manfrinetti P, Provino A. Pressure and magnetic field tuned quantum critical point in the Kondo antiferromagnet CePtZn. J Phys Condens Matter 2009; 21:156001. [PMID: 21825376 DOI: 10.1088/0953-8984/21/15/156001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report magnetization, heat capacity and electrical resistivity measurements on CePtZn, which crystallizes in the orthorhombic TiNiSi type structure. Magnetization and electrical resistivity on the iso-structural series of compounds Ce(1-x)La(x)PtZn (x = 0.1, 0.2 0.5 and 1) were also carried out. The electrical resistivity of CePtZn was also measured in external magnetic fields up to 12 T and under pressures up to 2.66 GPa. We find that CePtZn is a dense Kondo lattice, ordering antiferromagnetically at T(N) = 1.7 K, with a comparable Kondo temperature. The magnetic transition temperature, T(N), is continuously suppressed both by the magnetic field and pressure and [Formula: see text] around 5-6 T and at 1.2 GPa, respectively. Non-Fermi liquid behavior of resistivity at 4 T and 1.2 GPa and logarithmic divergence of the heat capacity, C(4f)/T, at 6 T in a limited temperature region strongly suggest the emergence of a quantum critical point as [Formula: see text].
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Affiliation(s)
- S K Dhar
- CMP&MS, TIFR, Homi Bhabha Road, Colaba, Mumbai 400 005, India
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42
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Miyauchi N, Hidaka H, Chigai T, Nagaoka A, Watanabe N, Kouchi A. Formation of hydrogen peroxide and water from the reaction of cold hydrogen atoms with solid oxygen at 10K. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.02.095] [Citation(s) in RCA: 147] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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43
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Kotegawa H, Hidaka H, Kobayashi TC, Kikuchi D, Sugawara H, Sato H. Connection between charge fluctuations and the coherent temperature in the heavy-fermion system SmOs4Sb12: a {121, 123}Sb NQR study. Phys Rev Lett 2007; 99:156408. [PMID: 17995199 DOI: 10.1103/physrevlett.99.156408] [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: 04/09/2007] [Indexed: 05/25/2023]
Abstract
We report {121, 123}Sb nuclear quadrupole resonance measurements under pressure in a novel heavy fermion (HF) system SmOs4Sb12. The nuclear spin-spin relaxation rate 1/T{2} exhibits a distinct peak near the coherent temperature of the Kondo effect. The isotope effect of 121Sb and 123Sb indicates that the peak in 1/T{2} is electrical in origin. The connection between the peak in 1/T{2} and the development of coherency of the Kondo effect is robust even under pressure. It is conjectured that charge fluctuation plays an important role in forming the HF state in SmOs4Sb12.
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Affiliation(s)
- H Kotegawa
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
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44
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Abstract
The discovery of the existence of chain reactions at the Oklo natural reactors in Gabon, Central Africa in 1972 was a triumph for the accuracy of mass spectrometric measurements, in that a 0.5% anomaly in the (235)U/(238)U ratio of certain U ore samples indicated a depletion in (235)U. Mass spectrometric techniques thereafter played a dominant role in determining the nuclear parameters of the reactor zones themselves, and in deciphering the geochemical characteristics of various elements in the U-rich ore and in the surrounding rock strata. The variations in the isotopic composition of a large number of elements, caused by a combination of nuclear fission, neutron capture and radioactive decay, provide a powerful tool for investigating this unique geological environment. Mass spectrometry can be used to measure the present-day elemental and isotopic abundances of numerous elements, so as to decipher the past history of the reactors and examine the retentivity/mobility of these elements. Many of the fission products have a radioactive decay history that have been used to date the age and duration of the reactor zones, and to provide insight into their nuclear and geochemical behavior as a function of time. The Oklo fission reactors and their near neighbor at Bangombé, some 30 km to the south-east of Oklo, are unique in that not only did they become critical some 2 x 10(9) years ago, but also the deposits have been preserved over this period of geological time. The long-term geochemical behavior of actinides and fission products have been extensively studied by a variety of mass spectrometric techniques over the past 30 years to provide us with significant information on the mobility/retentivity of this material in a natural geological repository. The Oklo-Bangombé natural reactors are therefore geological analogs that can be evaluated in terms of possible radioactive waste containment sites. As more reactor zones were discovered, it was realized that they could be classified into two groups according to their burial depth in the Oklo mine-site. Reactor Zones 10, 13, and 16 were buried more deeply, and were therefore less weathered than the other zones. The less-weathered zones are of great importance in mobility/retentivity studies and therefore to the question of radioactive waste containment. Isotopic studies of these natural reactors are also of value in physics to examine possible variations in fundamental constants over the past 2 billion years.
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Affiliation(s)
- J R De Laeter
- Department of Applied Physics, Curtin University of Technology, Perth, WA, Australia.
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45
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Hidaka H, Kouchi A, Watanabe N. Temperature, composition, and hydrogen isotope effect in the hydrogenation of CO on amorphous ice surface at 10–20K. J Chem Phys 2007; 126:204707. [PMID: 17552789 DOI: 10.1063/1.2735573] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An experiment on the addition reaction of a D atom (deuteration) to CO on a cold ice surface is performed by deuterium atom exposure of three types of samples (pure solid CO, CO-capped H2O ice, and CO-H2O mixed ice) at 10-20 K. The variation of IR absorption spectra for the samples was measured by a Fourier transform infrared spectrometer during exposure to deuterium atoms. Reactions on pure solid CO were observed only at 10 K, while reactions on CO-capped H2O ice and CO-H2O mixed ice were observed to proceed even at 20 K. This indicates that the coexistence of H2O at the surface raises the reactive temperature. In addition, the experiment on H atom exposure was also carried out at 15 K to compare the reaction rate constant between the H and D atoms. The ratio of reaction rate constant kD/kH obtained is about 0.08 at 15 K. The authors provide information on the potential energy for the H+CO reaction at the surface by using the ratio kD/kH and by a model calculation of the potential tunneling with the asymmetric Eckart potential.
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Affiliation(s)
- H Hidaka
- Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan
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Hotokezaka M, Jimi SI, Hidaka H, Maehara N, Eto TA, Chijiiwa K. Role of intraoperative enteroscopy for surgical decision making with Crohn’s disease. Surg Endosc 2007; 21:1238-42. [PMID: 17285372 DOI: 10.1007/s00464-006-9154-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2006] [Revised: 08/26/2006] [Accepted: 09/25/2006] [Indexed: 01/14/2023]
Abstract
BACKGROUND This study aimed to assess the role of intraoperative enteroscopy (IOE) in determining surgical treatment. METHODS The IOE procedure was performed for 30 patients with Crohn's disease. The degree of stricture and the presence of active ulcer were examined. Preoperative diagnoses and intraoperative findings obtained by inspection and palpation were noted and compared with the IOE findings. RESULTS Of the 78 intestinal strictures observed by IOE (42%), 33 were not found by preoperative examination. Of the 45 strictures confirmed by IOE to be severe (<15 mm in diameter), 8 were judged to be mild (15-25 mm in diameter) or were not even identified by intraoperative inspection and palpation. Active ulcer was found at 12 of 33 mild strictures, and all 12 strictures were surgically corrected. Of 11 severe strictures detected by IOE at previous surgical sites, 9 were found preoperatively, and 4 were judged to be mild on the basis of inspection and palpation. Stricture was found at the ileocecal valve by IOE in seven patients, but was not diagnosed preoperatively in two of these patients. CONCLUSION Intraoperative enteroscopy provides useful information regarding the status of the lumen in patients with Crohn's disease.
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Affiliation(s)
- M Hotokezaka
- Department of Surgery 1, Miyazaki University School of Medicine, 5200 Kihara, Kiyotake, Miyazaki, 889-1692, Japan
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47
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Kobayashi TC, Hidaka H, Kotegawa H, Fujiwara K, Eremets MI. Nonmagnetic indenter-type high-pressure cell for magnetic measurements. Rev Sci Instrum 2007; 78:023909. [PMID: 17578125 DOI: 10.1063/1.2459512] [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: 05/15/2023]
Abstract
An indenter-type high-pressure cell has been developed for electric and magnetic measurements in low-temperature and high-magnetic-field environments. The maximum pressure achieved at low temperatures is more than 4.5 GPa, which is higher than that of a conventional piston-cylinder cell. The typical sample space at maximum pressure is 1.6 mm in diameter and approximately 0.7 mm in depth, and magnetic measurements such as ac-susceptibility and nuclear magnetic resonance can be performed using a miniature coil. All the components of the indenter cell are made of nonmagnetic materials that have enough thermal conductivity for low-temperature experiments using a 3He/4He dilution refrigerator. Another indenter-type cell designed for a commercial superconducting quantum interference device magnetometer is also reported.
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Affiliation(s)
- T C Kobayashi
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.
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Tatsumi S, Mabuchi T, Katano T, Matsumura S, Abe T, Hidaka H, Suzuki M, Sasaki Y, Minami T, Ito S. Involvement of Rho-kinase in inflammatory and neuropathic pain through phosphorylation of myristoylated alanine-rich C-kinase substrate (MARCKS). Neuroscience 2005; 131:491-8. [PMID: 15708490 DOI: 10.1016/j.neuroscience.2004.10.022] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2004] [Indexed: 11/18/2022]
Abstract
Myristoylated alanine-rich C-kinase substrate (MARCKS) is a major in vivo substrate for protein kinase C in the brain and has been implicated in cellular processes associated with cytoskeletal restructuring such as synaptic trafficking and neurotransmitter release. A phosphorylation-site specific antibody against Ser159-phospho-MARCKS (pS159-Mar-Ab) revealed that MARCKS is phosphorylated at Ser159 by Rho-kinase and that its phosphorylation is inhibited by the Rho-kinase specific inhibitor H-1152. Since the function of MARCKS is regulated by phosphorylation at multiple sites, here we examined the involvement of Rho-kinase in relation to phosphorylation of MARCKS at Ser159 in inflammatory and neuropathic pain by H-1152. When intrathecally administered 10 min before s.c. injection of formalin, H-1152 at 10 and 100 ng attenuated the second-phase, but not the first-phase, pain-like behaviors in the formalin test. Neuropathic pain induced by selective L5 spinal nerve transection was also relieved by intrathecal injection of H-1152. Nitric oxide synthase activity visualized by NADPH diaphorase histochemistry increased in the superficial layer of the spinal cord 30 min after formalin injection and 7 days after nerve transection, which were blocked by H-1152. Phosphorylation of MARCKS at Ser159 was detected in the spinal cord by pS159-Mar-Ab and the level of phosphorylation increased in the superficial layer after nerve transection. In contrast, immunoreactivities of neuronal nitric oxide synthase and MARCKS did not change significantly in the spinal cord before and after nerve transection. Taken together, the present study demonstrates that Rho-kinase is involved in inflammatory pain and the maintenance of neuropathic pain through phosphorylation of MARCKS at Ser159.
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Affiliation(s)
- S Tatsumi
- Department of Anesthesiology, Osaka Medical College, Takatsuki 569-8686, Japan
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Hidaka H, Ishiko T, Ishikawa S, Ikeda O, Mita S, Iwamura T, Chijiiwa K, Ogawa M. Constitutive IL-8 expression in cancer cells is associated with mutation of p53. J Exp Clin Cancer Res 2005; 24:127-33. [PMID: 15945132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We previously reported that most cancer cell lines constitutively express various cytokines including IL-8. But how IL-8 gene expression is regulated in cancer cells is still unclear. p53 tumor suppressor gene plays an important role in the regulation of transcription and is mutated in cancer cell lines. We investigated whether p53 status affects the constitutive expression of IL-8 in human cancer cells. SUIT-2 and RERF-LCOK cancer cells constitutively produced high levels of IL-8 in culture medium. Both cell lines were shown to carry a p53 mutation, and constitutive NF-kappaB transcriptional activity. To analyze whether p53 status mediates IL-8 expression, the effect of wild-type p53 (wt-p53) gene transfer on activation of NF-kappaB was determined in both cell lines. ELISA showed that the IL-8 concentration in medium decreased dose dependently by transient expression of wt-p53. Western-blot analysis showed no marked change in NF-kappaB protein levels in cell nuclei. EMSA showed no repression of NF-kappaB binding activity after transient expression of wt-p53. In contrast, luciferase reporter studies indicated that transcriptional activity of NF-kappaB is suppressed by transfection of wt-p53. These results show that wt-p53 gene transfer inhibits IL-8 production and NF-kappaB transcription activity in cancer cells and suggest that constitutive IL-8 production in cancer cells is associated with mutation of p53.
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Affiliation(s)
- H Hidaka
- Dept. of Surgery I, Miyazaki University Medical School, Miyazaki, Japan
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