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Takeda M, Sakai K, Terashima M, Kaneda H, Hayashi H, Tanaka K, Okamoto K, Takahama T, Yoshida T, Iwasa T, Shimizu T, Nonagase Y, Kudo K, Tomida S, Mitsudomi T, Saigo K, Ito A, Nakagawa K, Nishio K. Clinical application of amplicon-based next-generation sequencing to therapeutic decision making in lung cancer. Ann Oncol 2015; 26:2477-82. [PMID: 26420428 DOI: 10.1093/annonc/mdv475] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 09/18/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The clinical implementation of genomic profiling for lung cancer with high-throughput, multiplex tests is warranted to allow prioritization of appropriate therapies for individual patients. We have now applied such testing to detect actionable mutations that may inform treatment recommendations in lung cancer. PATIENTS AND METHODS We prospectively applied amplicon sequencing panels that cover both mutational hotspots in 22 genes related to lung and colon tumorigenesis as well as 72 major variants of ALK, RET, ROS1, and NTRK1 fusion transcripts. We then determined the proportion of patients who received genotype-directed therapy and their overall survival (OS). RESULTS Tumor specimens from 110 patients with lung cancer recruited between July 2013 and March 2015 were analyzed. The most common genetic alterations were TP53 mutations in 42 patients, followed by EGFR mutations in 25, STK11 mutations in 12, and KRAS mutations in 10. Potentially actionable mutations were identified in 44 patients including 50% of those with adenocarcinoma and 14% of those with squamous cell carcinoma. The OS of patients with advanced or recurrent cancer who had an actionable mutation and received targeted therapy (median OS not achieved) was significantly longer than that of those with no mutation (18.1 months, P = 0.041) or of those with a mutation not so treated (6.1 months, P = 0.0027). CONCLUSIONS Multiplex genomic testing was performed on formalin-fixed, paraffin-embedded tumor specimens with a success rate of ≥95%. Such testing can assist physicians in matching patients with approved or experimental targeted treatments. CLINICAL TRIAL REGISTRATION The University Medical Hospital Information Network (UMIN) Clinical Trials Registry under the identifier UMIN000014782.
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Togashi Y, Yoshioka Y, Chikugo T, Terashima M, Mizukami T, Hayashi H, Sakai K, Velasco MD, Tomida S, Fujita Y, Okuno K, Nishio K. 2169 Clinicopathological and genetic differences between low-grade and high-grade colorectal mucinous adenocarcinoma. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31089-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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53
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Hayashi H, Togashi Y, Terashima M, Sakai K, Mizuuchi H, Kobayashi Y, Suda K, Nakagawa K, Nishio K, Mitsudomi T. 3016 Receptor tyrosine kinase mutations in non-small cell lung cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31660-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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54
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Mizukami T, Togashi Y, Banno E, Terashima M, de Velasco M, Sakai K, Hayashi H, Fujita Y, Tomida S, Eguchi Nakajima T, Boku N, Ito A, Nakagawa K, Nishio K. 259 Fibroblast growth factor 9 gene amplification can induce resistance to anti-EGFR therapy in colorectal cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30145-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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55
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Yamamoto Y, Sugiura T, Okamura Y, Ito T, Ashida R, Miyata T, Uemura S, Kinugasa Y, Bando E, Terashima M, Uesaka K. 2277 Is combined pancreatoduodenectomy for advanced gallbladder cancer justifiled? Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31193-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tanabe K, Fujii M, Nishikawa K, Kunisaki C, Tsuji A, Matsuhashi N, Takagane A, Ohno T, Kawase T, Kochi M, Yoshida K, Kakeji Y, Ichikawa W, Chin K, Terashima M, Takeuchi M, Nakajima T. Phase II/III study of second-line chemotherapy comparing irinotecan-alone with S-1 plus irinotecan in advanced gastric cancer refractory to first-line treatment with S-1 (JACCRO GC-05). Ann Oncol 2015; 26:1916-1922. [PMID: 26109630 DOI: 10.1093/annonc/mdv265] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/26/2015] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND In Japan, S-1 plus cisplatin has been used as first-line therapy for advanced gastric cancer (AGC). Patients with no response to first-line treatment with S-1 often receive a taxane-alone or irinotecan-alone as second-line treatment. However, second-line treatment with S-1 plus irinotecan is widely used in patients with AGC resistant to first-line S-1-based chemotherapy. The goal of this trial was to determine whether the consecutive use of S-1 plus irinotecan improves survival when compared with irinotecan-alone as second-line treatment for AGC. PATIENTS AND METHODS Patients who had disease progression during first-line S-1-based chemotherapy were randomly assigned to receive S-1 plus irinotecan or irinotecan-alone. The S-1 plus irinotecan group received oral S-1 (40-60 mg/m(2)) on days 1-14 and intravenous irinotecan (150 mg/m(2)) on day 1 of a 21-day cycle. The irinotecan-alone group received the same dose of irinotecan intravenously on day 1 of a 14-day cycle. The primary end point was overall survival (OS). RESULTS From February 2008 to May 2011, a total of 304 patients were enrolled. The median OS was 8.8 months in the S-1 plus irinotecan group and 9.5 months in the irinotecan-alone group. This difference was not significant (hazard ratio for death, 0.99; 95% confidence interval 0.78-1.25; P = 0.92). Grade 3 or higher toxicities were more common in the S-1 plus irinotecan group than in the irinotecan-alone group. CONCLUSION The consecutive use of S-1 plus irinotecan is not recommended as second-line treatment in patients who are refractory to S-1-based first-line chemotherapy. ClinicalTrials.gov ID: NCT00639327.
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Tanizawa Y, Bando E, Tokunaga M, Kawamura T, Makuuchi R, Nanri K, Terashima M. PD-003 Incidence and risk factors of deep venous thrombosis detected by routine surveillance ultrasonography before surgery in patients with gastric cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv234.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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58
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Togashi Y, Mizuuchi H, Kobayashi Y, Hayashi H, Terashima M, Sakai K, Banno E, Mizukami T, Nakamura Y, de Velasco MA, Fujita Y, Tomida S, Mitsudomi T, Nishio K. An activating ALK gene mutation in ALK IHC-positive/FISH-negative nonsmall-cell lung cancer. Ann Oncol 2015; 26:1800-1. [PMID: 26002608 DOI: 10.1093/annonc/mdv240] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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59
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Ren J, Briones V, Barbour S, Yu W, Han Y, Terashima M, Muegge K. The ATP binding site of the chromatin remodeling homolog Lsh is required for nucleosome density and de novo DNA methylation at repeat sequences. Nucleic Acids Res 2015; 43:1444-55. [PMID: 25578963 PMCID: PMC4330352 DOI: 10.1093/nar/gku1371] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/16/2014] [Accepted: 12/21/2014] [Indexed: 12/19/2022] Open
Abstract
Lsh, a chromatin remodeling protein of the SNF2 family, is critical for normal heterochromatin structure. In particular, DNA methylation at repeat elements, a hallmark of heterochromatin, is greatly reduced in Lsh(-/-) (KO) cells. Here, we examined the presumed nucleosome remodeling activity of Lsh on chromatin in the context of DNA methylation. We found that dynamic CG methylation was dependent on Lsh in embryonic stem cells. Moreover, we demonstrate that ATP function is critical for de novo methylation at repeat sequences. The ATP binding site of Lsh is in part required to promote stable association of the DNA methyltransferase 3b with the repeat locus. By performing nucleosome occupancy assays, we found distinct nucleosome occupancy in KO ES cells compared to WT ES cells after differentiation. Nucleosome density was restored to wild-type level by re-expressing wild-type Lsh but not the ATP mutant in KO ES cells. Our results suggest that ATP-dependent nucleosome remodeling is the primary molecular function of Lsh, which may promote de novo methylation in differentiating ES cells.
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Tange S, Oktyabri D, Terashima M, Ishimura A, Suzuki T. JARID2 is involved in transforming growth factor-beta-induced epithelial-mesenchymal transition of lung and colon cancer cell lines. PLoS One 2014; 9:e115684. [PMID: 25542019 PMCID: PMC4277293 DOI: 10.1371/journal.pone.0115684] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 11/25/2014] [Indexed: 02/03/2023] Open
Abstract
Histone methylation plays a crucial role in various biological and pathological processes including cancer development. In this study, we discovered that JARID2, an interacting component of Polycomb repressive complex-2 (PRC2) that catalyzes methylation of lysine 27 of histone H3 (H3K27), was involved in Transforming Growth Factor-beta (TGF-ß)-induced epithelial-mesenchymal transition (EMT) of A549 lung cancer cell line and HT29 colon cancer cell line. The expression of JARID2 was increased during TGF-ß-induced EMT of these cell lines and knockdown of JARID2 inhibited TGF-ß-induced morphological conversion of the cells associated with EMT. JARID2 knockdown itself had no effect in the expression of EMT-related genes but antagonized TGF-ß-dependent expression changes of EMT-related genes such as CDH1, ZEB family and microRNA-200 family. Chromatin immunoprecipitation assays showed that JARID2 was implicated in TGF-ß-induced transcriptional repression of CDH1 and microRNA-200 family genes through the regulation of histone H3 methylation and EZH2 occupancies on their regulatory regions. Our study demonstrated a novel role of JARID2 protein, which may control PRC2 recruitment and histone methylation during TGF-ß-induced EMT of lung and colon cancer cell lines.
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Oktyabri D, Tange S, Terashima M, Ishimura A, Suzuki T. EED regulates epithelial–mesenchymal transition of cancer cells induced by TGF-β. Biochem Biophys Res Commun 2014; 453:124-30. [DOI: 10.1016/j.bbrc.2014.09.082] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 09/18/2014] [Indexed: 02/01/2023]
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Yamaue H, Kubota T, Tanigawa N, Ohyama S, Sakuramoto S, Inada T, Kitagawa Y, Ochiai T, Terashima M, Gotoh M, Yasuda Y, Hara A, Kato H, Matsuyama J, Kodera Y, Nashimoto A, Yamaguchi T, Takeuchi M, Fujii M, Nakajima T. Exploratory Phase Ii Trial Assessing Relevance of in Vitro Chemosensitivity Test As a Predictor of Survival in Gastric Cancer Undergoing Adjuvant Chemotherapy (Jaccro-Gc04). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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63
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Terashima M, Hatakeyama K, Yamakawa Y, Miki Y, Makuuchi R, Honda S, Tatsubayashi T, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Oshima K, Mochizuki T. Prognostic Significance of Survivin Expression in Patients with Gastric Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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64
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Yu W, McIntosh C, Lister R, Zhu I, Han Y, Ren J, Landsman D, Lee E, Briones V, Terashima M, Leighty R, Ecker JR, Muegge K. Genome-wide DNA methylation patterns in LSH mutant reveals de-repression of repeat elements and redundant epigenetic silencing pathways. Genome Res 2014; 24:1613-23. [PMID: 25170028 PMCID: PMC4199375 DOI: 10.1101/gr.172015.114] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cytosine methylation is critical in mammalian development and plays a role in diverse biologic processes such as genomic imprinting, X chromosome inactivation, and silencing of repeat elements. Several factors regulate DNA methylation in early embryogenesis, but their precise role in the establishment of DNA methylation at a given site remains unclear. We have generated a comprehensive methylation map in fibroblasts derived from the murine DNA methylation mutant Hells−/− (helicase, lymphoid specific, also known as LSH). It has been previously shown that HELLS can influence de novo methylation of retroviral sequences and endogenous genes. Here, we describe that HELLS controls cytosine methylation in a nuclear compartment that is in part defined by lamin B1 attachment regions. Despite widespread loss of cytosine methylation at regulatory sequences, including promoter regions of protein-coding genes and noncoding RNA genes, overall relative transcript abundance levels in the absence of HELLS are similar to those in wild-type cells. A subset of promoter regions shows increases of the histone modification H3K27me3, suggesting redundancy of epigenetic silencing mechanisms. Furthermore, HELLS modulates CG methylation at all classes of repeat elements and is critical for repression of a subset of repeat elements. Overall, we provide a detailed analysis of gene expression changes in relation to DNA methylation alterations, which contributes to our understanding of the biological role of cytosine methylation.
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Kobayashi M, Fujioka Y, Mori T, Terashima M, Suzuki H, Shimada Y, Saito T, Wang ZY, Nozawa T. Reconstitution of Photosynthetic Reaction Centers and Core Antenna-Reaction Center Complexes in Liposomes and Their Thermal Stability. Biosci Biotechnol Biochem 2014; 69:1130-6. [PMID: 15973044 DOI: 10.1271/bbb.69.1130] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Photosynthetic reaction centers (RCs) and their core light-harvesting complexes (LH1-RCs), purified from a thermophile, Thermochromatium (T.) tepidum, and a mesophile, Allochromatium (A.) vinosum, were reconstituted into liposomes. The RC and the LH1-RC in the reconstituted liposomes were found intact from the absorption spectra at about 4 and 40 degrees C respectively. The thermal stability of the RCs of T. tepidum in the liposome was dependent on whether they were surrounded directly by lipids or by the core light-harvesting complexes. The results show that the RC of T. tepidum gains its thermostability through interactions with the LH1. These results are consistent with the result that the thermal stability of the LH1 in T. tepidum is similar in both the reconstituted LH1-RC liposome and ICM. This is clearly different from the mesophilic bacterium, A. vinosum. The thermal stability of RC was also affected by its subunit constitution: the RC containing a cytochrome subunit was more thermostable than the cytochrome-detached RC. This suggests that the cytochrome subunit might play a role in protecting the special pair pigments from denaturation. The thermal denaturation showed a second-order reaction dependence on time. The interaction of the pigments with proteins and/or lipids might be the cause of the second-order reaction profile.
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Kohama K, Nakao A, Terashima M, Ishikawa M, Shimizu T, Harada D, Nakayama M, Yamashita H, Fujiwara M, Kotani J. Supplementation of Parenteral Nutrition with Fish Oil Attenuates LPS-induced Acute Lung Injury in Rats. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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67
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So M, Naka D, Goel R, Terashima M, Yasui H. Modelling clogging and biofilm detachment in sponge carrier media. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2014; 69:1298-1303. [PMID: 24647197 DOI: 10.2166/wst.2014.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Sponge carrier media provide a large surface area for biofilm support; however, little information is known about how to model their dual nature as a moving bed and as porous media. To investigate the interaction of mass transfer and detachment with bio-clogging, a novel biofilm model framework was built based on individual-based modelling, and hydrodynamics were modelled using the lattice Boltzmann method. The combined model structure enabled the simulation of oxygen and biomass distribution inside the porous network as well as inside the biofilm. In order to apply the model to moving bed biofilm reactors (MBBR), biofilm detachment due to abrasion (carrier collisions) was modelled to be dependent on intracarrier distance. In the initial growth stage, biofilm grew homogeneously on the internal skeleton after which a more discontinuous growth developed which significantly increased permeability. Low detachment rates caused clogging in the outer pores which limited growth of biofilm to the surface region of the sponge. High detachment rates on the surface enabled deeper oxygen penetration with higher internal biomass activity. The degree of clogging was also sensitive to the presence of extracellular polymeric substances because of its large spatial occupancy.
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Hai NM, Sakamoto S, Le VC, Kim HS, Goel R, Terashima M, Yasui H. A modified anaerobic digestion process with chemical sludge pre-treatment and its modelling. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2014; 69:2350-2356. [PMID: 24901631 DOI: 10.2166/wst.2014.164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Activated Sludge Models (ASMs) assume an unbiodegradable organic particulate fraction in the activated sludge, which is derived from the decay of active microorganisms in the sludge and/or introduced from wastewater. In this study, a seasonal change of such activated sludge constituents in a municipal wastewater treatment plant was monitored for 1.5 years. The chemical oxygen demand ratio of the unbiodegradable particulates to the sludge showed a sinusoidal pattern ranging from 40 to 65% along with the change of water temperature in the plant that affected the decay rate. The biogas production in a laboratory-scale anaerobic digestion (AD) process was also affected by the unbiodegradable fraction in the activated sludge fed. Based on the results a chemical pre-treatment using H2O2 was conducted on the digestate to convert the unbiodegradable fraction to a biodegradable one. Once the pre-treated digestate was returned to the digester, the methane conversion increased up to 80% which was about 2.4 times as much as that of the conventional AD process, whilst 96% of volatile solids in the activated sludge was digested. From the experiment, the additional route of the organic conversion processes for the inert fraction at the pre-treatment stage was modelled on the ASM platform with reasonable simulation accuracy.
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Togashi Y, Arao T, Kato H, Matsumoto K, Terashima M, Hayashi H, Fujita Y, Yasuda T, Shiozaki H, Nishio K. ORAOV1 is Amplified in Esophageal Squamous Cell Cancer and Related to Tumor Growth and Poorly Differentiated Tumor. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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70
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Terashima M, Sakai K, Fujita Y, De Velasco M, Nishio K. Construction of a 3D Culture Assay System for Anti-Cancer Drug Testing. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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71
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Enkhbaatar Z, Terashima M, Oktyabri D, Tange S, Ishimura A, Yano S, Suzuki T. KDM5B histone demethylase controls epithelial-mesenchymal transition of cancer cells by regulating the expression of the microRNA-200 family. Cell Cycle 2013; 12:2100-12. [PMID: 23759590 DOI: 10.4161/cc.25142] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Histone methylation is implicated in various biological and pathological processes including cancer development. In this study, we discovered that ectopic expression of KDM5B, a histone H3 lysine 4 (H3K4) demethylase, promoted epithelial-mesenchymal transition (EMT) of cancer cells. KDM5B increased the expression of transcription factors, ZEB1 and ZEB2, followed by downregulation of E-cadherin and upregulation of mesenchymal marker genes. The expression of the microRNA-200 (miR-200) family, which specifically targets ZEB1 and ZEB2, was reduced in the cells with KDM5B overexpression. We found that KDM5B repressed the expression of the miR-200 family by changing histone H3 methylation status of their regulatory regions. The introduction of miR-200 precursor in the cells inhibited EMT induction by KDM5B, suggesting that miR-200 family was a critical downstream mediator of KDM5B-promoted EMT. Furthermore, knockdown of KDM5B was shown to affect the expression of EMT-related genes, indicating the involvement of endogenous KDM5B. Our study demonstrated a novel role of KDM5B histone lysine demethylase in EMT, which may contribute to malignant progression of cancer.
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Suzuki T, Terashima M, Tange S, Ishimura A. Roles of histone methyl-modifying enzymes in development and progression of cancer. Cancer Sci 2013; 104:795-800. [PMID: 23560485 DOI: 10.1111/cas.12169] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 04/03/2013] [Indexed: 12/13/2022] Open
Abstract
Retroviral insertional mutagenesis in mice is considered a powerful forward genetic strategy to identify disease genes involved in cancer. Our high-throughput screens led to frequent identification of the genes encoding the enzymes engaged in histone lysine methylation. Histone methylation can positively or negatively impact on gene transcription, and then fulfill important roles in developmental control and cell-fate decisions. A tremendous amount of progress has accelerated the characterization of histone methylations and the enzymes that regulate them. Deregulation of these histone methyl-modifying enzymes has been increasingly recognized as a hallmark of cancer in the last few years. However, in most cases, we have only limited understanding for the molecular mechanisms by which these enzymes contribute to cancer development and progression. In this review, we summarize the current knowledge regarding some of the best-validated examples of histone lysine methyltransferases and demethylases associated with oncogenesis and discuss their potential mechanisms of action.
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Terashima M, Iwasaki M, Yasui H, Goel R, Suto K, Inoue C. Tracer experiment and RTD analysis of DAF separator with bar-type baffles. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2013; 67:942-947. [PMID: 23416583 DOI: 10.2166/wst.2013.584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This paper describes the development of a new dissolved air flotation (DAF) separator with a flow streamlining baffle to improve solid separation efficiency. The analysis of the RTD (residence time distribution) curves indicated that the parameter θ(10) (dimensionless time at which 10% of tracer has discharged) increased from 0.38 for control reactor to 0.54 for the test reactor, suggesting significant reduction in short circuit flow. The RTD curves were also used to develop a compartment model for white water (rich in micro-bubbles and water flow is turbulent) and clear water (little or no air content and water flow is quiescent) zones in the reactor using a series of CSTR (continuous stirred tank reactors) and plug flow regime respectively. The proportion of the volume occupied by the white water zone was different in control and test configurations. In the test reactor, the fraction of the clear water zone was found to increase from 6 to 37%, resulting in improvement of the suspended solid (SS) removal efficiency from 97 to 99%.
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Terashima M, Nakagawa K, Okabe T, Kaneda H, Yamamoto N, Nokihara H, Horinouchi H, Horai T, Nishio M, Ohyanagi F, Horiike A, McKee M, Carlson D, Xiong H, Tamura T. Linifanib Plus Carboplatin/Paclitaxel in Japanese Patients with Advanced/Metastatic Non-Small-Cell Lung Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32298-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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75
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Terashima M, Kusuhara M, Tokunaga M, Tanizawa Y, Bando E, Kawamura T, Fujimori T, Yamamoto H, Kami K, Ohashi Y. 474. Metabolomic Discrimination of Intestinal- and Diffuse-type Gastric Cancer Tissues Using Capillary Electrophoresis Time-of-flight Mass Spectrometry. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.06.423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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