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Miyazaki T, Aoki W, Koike N, Sato T, Ueda M. Application of peptide barcoding to obtain high-affinity anti-PD-1 nanobodies. J Biosci Bioeng 2023; 136:173-181. [PMID: 37487915 DOI: 10.1016/j.jbiosc.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 07/02/2023] [Accepted: 07/06/2023] [Indexed: 07/26/2023]
Abstract
Cancer treatment has been revolutionized by immune checkpoint inhibitors, which regulate immune cell function by blocking the interactions between immune checkpoint molecules and their ligands. The interaction between programmed cell death-1 (PD-1) and programmed cell death-ligand 1 (PD-L1) is a target for immune checkpoint inhibitors. Nanobodies, which are recombinant variable domains of heavy-chain-only antibodies, can replace existing immune checkpoint inhibitors, such as anti-PD-1 or anti-PD-L1 conventional antibodies. However, the screening process for high-affinity nanobodies is laborious and time-consuming. Here, we identified high-affinity anti-PD-1 nanobodies using peptide barcoding, which enabled reliable and efficient screening by distinguishing each nanobody with a peptide barcode that was genetically appended to each nanobody. We prepared a peptide-barcoded nanobody (PBNb) library with thousands of variants. Three high-affinity PBNbs were identified from the PBNb library by quantifying the peptide barcodes derived from high-affinity PBNbs. Furthermore, these three PBNbs neutralized the interaction between PD-1 and PD-L1. Our results demonstrate the utility of peptide barcoding and the resulting nanobodies can be used as experimental tools and antitumor agents.
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Affiliation(s)
- Takumi Miyazaki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Wataru Aoki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan; Kyoto Integrated Science and Technology Bio-Analysis Center, Simogyo-ku, Kyoto 600-8813, Japan.
| | - Naoki Koike
- TechnoPro, Inc. TechnoPro R&D, Company, Tokyo 106-6135, Japan
| | - Toshiko Sato
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan; Kyoto Integrated Science and Technology Bio-Analysis Center, Simogyo-ku, Kyoto 600-8813, Japan
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2
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Sawada M, Shiraishi Y, Nemoto T, Tanaka T, Kota R, Koike N, Shigematsu N. PO-1796 Dosimetric comparison of rectal dose reduction methods in brachytherapy for cervical cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03759-8] [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: 11/17/2022]
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3
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Yamada C, Morooka A, Miyazaki S, Nagai M, Mase S, Iemura K, Tasnin MN, Takuma T, Nakamura S, Morshed S, Koike N, Mostofa MG, Rahman MA, Sharmin T, Katsuta H, Ohara K, Tanaka K, Ushimaru T. TORC1 inactivation promotes APC/C-dependent mitotic slippage in yeast and human cells. iScience 2022; 25:103675. [PMID: 35141499 PMCID: PMC8814761 DOI: 10.1016/j.isci.2021.103675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 10/20/2021] [Accepted: 12/20/2021] [Indexed: 12/31/2022] Open
Abstract
Unsatisfied kinetochore-microtubule attachment activates the spindle assembly checkpoint to inhibit the metaphase-anaphase transition. However, some cells eventually override mitotic arrest by mitotic slippage. Here, we show that inactivation of TORC1 kinase elicits mitotic slippage in budding yeast and human cells. Yeast mitotic slippage was accompanied with aberrant aspects, such as degradation of the nucleolar protein Net1, release of phosphatase Cdc14, and anaphase-promoting complex/cyclosome (APC/C)-Cdh1-dependent degradation of securin and cyclin B in metaphase. This mitotic slippage caused chromosome instability. In human cells, mammalian TORC1 (mTORC1) inactivation also invoked mitotic slippage, indicating that TORC1 inactivation-induced mitotic slippage is conserved from yeast to mammalian cells. However, the invoked mitotic slippage in human cells was not dependent on APC/C-Cdh1. This study revealed an unexpected involvement of TORC1 in mitosis and provides information on undesirable side effects of the use of TORC1 inhibitors as immunosuppressants and anti-tumor drugs. Yeast TORC1 inhibition promotes Net1 degradation and Cdc14 release Yeast TORC1 inhibition invokes mitotic slippage in an APC/C-Cdh1-dependent manner Human mTORC1 inhibition also elicits mitotic slippage
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Affiliation(s)
- Chihiro Yamada
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan
| | - Aya Morooka
- Department of Biological Science, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Seira Miyazaki
- Department of Biological Science, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Masayoshi Nagai
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan.,Department of Molecular Oncology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Satoru Mase
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan
| | - Kenji Iemura
- Department of Molecular Oncology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Most Naoshia Tasnin
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Tsuneyuki Takuma
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan
| | - Shotaro Nakamura
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan
| | - Shamsul Morshed
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Naoki Koike
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Md Golam Mostofa
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Muhammad Arifur Rahman
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Tasnuva Sharmin
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Haruko Katsuta
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan
| | - Kotaro Ohara
- Department of Biological Science, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Kozo Tanaka
- Department of Molecular Oncology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takashi Ushimaru
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka 422-8021, Japan.,Department of Biological Science, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan.,Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
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Matsuzaki Y, Aoki W, Miyazaki T, Aburaya S, Ohtani Y, Kajiwara K, Koike N, Minakuchi H, Miura N, Kadonosono T, Ueda M. Peptide barcoding for one-pot evaluation of sequence-function relationships of nanobodies. Sci Rep 2021; 11:21516. [PMID: 34728738 PMCID: PMC8563947 DOI: 10.1038/s41598-021-01019-6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 10/21/2021] [Indexed: 11/17/2022] Open
Abstract
Optimisation of protein binders relies on laborious screening processes. Investigation of sequence–function relationships of protein binders is particularly slow, since mutants are purified and evaluated individually. Here we developed peptide barcoding, a high-throughput approach for accurate investigation of sequence–function relationships of hundreds of protein binders at once. Our approach is based on combining the generation of a mutagenised nanobody library fused with unique peptide barcodes, the formation of nanobody–antigen complexes at different ratios, their fine fractionation by size-exclusion chromatography and quantification of peptide barcodes by targeted proteomics. Applying peptide barcoding to an anti-GFP nanobody as a model, we successfully identified residues important for the binding affinity of anti-GFP nanobody at once. Peptide barcoding discriminated subtle changes in KD at the order of nM to sub-nM. Therefore, peptide barcoding is a powerful tool for engineering protein binders, enabling reliable one-pot evaluation of sequence–function relationships.
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Affiliation(s)
- Yusei Matsuzaki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Wataru Aoki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan. .,Kyoto Integrated Science and Technology Bio-Analysis Center, Simogyo-ku, Kyoto, 600-8813, Japan. .,JST, CREST, Chiyoda-ku, Tokyo, 102-0076, Japan. .,JST, COI-NEXT, Chiyoda-ku, Tokyo, 102-0076, Japan. .,JST, FOREST, Chiyoda-ku, Tokyo, 102-0076, Japan.
| | - Takumi Miyazaki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Shunsuke Aburaya
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Yuta Ohtani
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kaho Kajiwara
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Naoki Koike
- TechnoPro, Inc. TechnoPro R&D, Company, Tokyo, 106-6135, Japan
| | | | - Natsuko Miura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Naka-ku, Sakai, 599-8531, Japan
| | - Tetsuya Kadonosono
- School of Life Science and Technology, Tokyo Institute of Technology, Midori-ku, Yokohama, 226-8501, Japan
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.,Kyoto Integrated Science and Technology Bio-Analysis Center, Simogyo-ku, Kyoto, 600-8813, Japan.,JST, CREST, Chiyoda-ku, Tokyo, 102-0076, Japan.,JST, COI-NEXT, Chiyoda-ku, Tokyo, 102-0076, Japan
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Abstract
Yeast cell surface display (YSD) has been used to engineer various proteins, including antibodies. Directed evolution, which subjects a gene to iterative rounds of mutagenesis, selection and amplification, is useful for protein engineering. In vivo continuous mutagenesis, which continuously diversifies target genes in the host cell, is a promising tool for accelerating directed evolution. However, combining in vivo continuous evolution and YSD is difficult because mutations in the gene encoding the anchor proteins may inhibit the display of target proteins on the cell surface. In this study, we have developed a modified YSD method that utilises SpyTag/SpyCatcher-based in vivo protein ligation. A nanobody fused with a SpyTag of 16 amino acids and an anchor protein fused with a SpyCatcher of 113 amino acids are encoded by separate gene cassettes and then assembled via isopeptide bond formation. This system achieved a high display efficiency of more than 90%, no intercellular protein ligation events, and the enrichment of target cells by cell sorting. These results suggested that our system demonstrates comparable performance with conventional YSD methods; therefore, it can be an appropriate platform to be integrated with in vivo continuous evolution.
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Affiliation(s)
- Kaho Kajiwara
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Wataru Aoki
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
- JST, CREST, 7 Goban-cho, Chiyoda-ku, Tokyo, 102-0076, Japan
| | - Naoki Koike
- TechnoPro, Inc. TechnoPro R&D, Company, Tokyo, Japan
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
- JST, CREST, 7 Goban-cho, Chiyoda-ku, Tokyo, 102-0076, Japan.
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Takano R, Fujimori Y, Yokota D, Koike N, Baba T, Takeuchi W, Yamazaki K, Kurihara K, Hashimoto S, Yamanaka Y, Terasawa Y, Wakabayashi T, imai T. SALINE-INDUCED PD/PA RATIO CAN EASILY AND ACCURATELY EVALUATE FUNCTIONAL SIGNIFICANCE OF CORONARY STENOSIS. J Am Coll Cardiol 2021. [DOI: 10.1016/s0735-1097(21)02377-9] [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: 11/27/2022]
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Ihara Y, Koike N, Nakano T. Integrative taxonomy reveals multiple lineages of the spider genus Cybaeus endemic to the Ryukyu Islands, Japan (Arachnida : Araneae : Cybaeidae). INVERTEBR SYST 2021. [DOI: 10.1071/is20070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The epigean spiders of the genus Cybaeus L. Koch, 1868 are known to have diversified in western North America and the Japanese Archipelago. To date, ~80 species of Cybaeus are known from Japan, but they have not previously been recorded from the Ryukyu Islands that harbour a diversity of endemic species. Here we describe eight new species of Cybaeus from the Ryukyu Islands, extending the range of Cybaeus southward to the central Ryukyus. Both sexes of each of the new species are described, and their phylogenetic relationships are estimated using nuclear and mitochondrial gene markers. Although Cybaeus okumurai, sp. nov. and C. kumadori, sp. nov. possess genital features that are common in the other Japanese congeners, the other six species (C. yakushimensis, sp. nov., C. kodama, sp. nov., C. amamiensis, sp. nov., C. aikana, sp. nov., C. tokunoshimensis, sp. nov., and C. hikidai, sp. nov.) are characterised by an elongated embolus and tubular spermathecae. These unique genital characteristics and the phylogeny recovered here suggest that these features evolved independently among the Japanese and Ryukyu Cybaeus species. Phylogenetic analyses highlight an unusual biogeographical pattern in which C. yakushimensis and C. kodama endemic to Yakushima Island in the northern Ryukyus are related to species distributed in the central Ryukyus. In contrast, our phylogeny suggests that C. okumurai from Tanegashima Island in the northern Ryukyus is sister to C. ashikitaensis (Komatsu, 1968), distributed in Kyushu of the Japanese Archipelago. The retreat constructs and sympatric distribution of Cybaeus found among the Ryukyus are also briefly discussed.
ZooBank: urn:lsid:zoobank.org:pub:640D15AA-17F4-48EE-88B4-485CFF8FCD60
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Daicho K, Koike N, Ott RG, Daum G, Ushimaru T. TORC1 ensures membrane trafficking of Tat2 tryptophan permease via a novel transcriptional activator Vhr2 in budding yeast. Cell Signal 2020; 68:109542. [PMID: 31954176 DOI: 10.1016/j.cellsig.2020.109542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/14/2020] [Accepted: 01/14/2020] [Indexed: 10/25/2022]
Abstract
The target of rapamycin complex 1 (TORC1) protein kinase is activated by nutrients and controls nutrient uptake via the membrane trafficking of various nutrient permeases. However, its molecular mechanisms remain elusive. Cholesterol (ergosterol in yeast) in conjunction with sphingolipids forms tight-packing microdomains, "lipid rafts", which are critical for intracellular protein sorting. Here we show that a novel target of rapamycin (TOR)-interacting transcriptional activator Vhr2 is required for full expression of some ERG genes for ergosterol biogenesis and for proper sorting of the tryptophan permease Tat2 in budding yeast. Loss of Vhr2 caused sterol biogenesis disturbance and Tat2 missorting. TORC1 activity maintained VHR2 transcript and protein levels, and total sterol levels. Vhr2 was not involved in regulation of the TORC1-downstream protein kinase Npr1, which regulates Tat2 sorting. This study suggests that TORC1 regulates nutrient uptake via sterol biogenesis.
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Affiliation(s)
- Katsue Daicho
- Biological Science, Graduate School of Science, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - Naoki Koike
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan
| | - René Georg Ott
- Institut für Biochemie, Technische Universität Graz, Petersgasse 12/2, A-8010 Graz, Austria
| | - Günther Daum
- Institut für Biochemie, Technische Universität Graz, Petersgasse 12/2, A-8010 Graz, Austria
| | - Takashi Ushimaru
- Biological Science, Graduate School of Science, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan; Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka 422-8021, Japan.
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Fukada J, Fukata K, Abe T, Koike N, Kota R, Kitagawa Y, Shigematsu N. Can Mean Pericardial Irradiated Dose (MPD) Predict Pericardial Effusion after Chemoradiotherapy in Esophageal Cancer Patients? Normal Tissue Complication Probability (NTCP) Model-Based Analyses. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Fujimori Y, Baba T, Yamazaki K, Hashimoto S, Yamanaka Y, Ebisuda K, Kurihara K, Koike N, Takeuchi N, Nishiyama S, Terasawa Y, Wakabayashi T, Imai T. Saline-induced Pd/Pa ratio predicts functional significance of coronary stenosis assessed using fractional flow reserve. EUROINTERVENTION 2018; 14:898-906. [PMID: 29688181 DOI: 10.4244/eij-d-17-01010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/23/2022]
Abstract
AIMS Fractional flow reserve (FFR), assessed using distal coronary pressure/aortic pressure (Pd)/(Pa) ratio, functionally evaluates coronary stenosis. An assessment method without vasodilators would be helpful. A single intracoronary bolus of saline decreases Pd because of the speculated low-viscosity effect. We hypothesised that saline-induced Pd/Pa ratio (SPR) could functionally evaluate coronary stenosis. This study aimed to test the accuracy and utility of SPR for predicting FFR ≤0.80. METHODS AND RESULTS In 137 coronary lesions with over 50% angiographic diameter stenosis, SPR was assessed using an intracoronary bolus of saline (2 mL/s) for five heartbeats (SPR-5) and three heartbeats (SPR-3). FFR was obtained after intravenous adenosine infusion (140 µg/kg/min). There was a strong correlation between FFR and SPR-5 or SPR-3 (R=0.941 and R=0.933, respectively). Receiver operating characteristic (ROC) curve analysis demonstrated good accuracy (86.3%) for SPR-5, with a cut-off of ≤0.84 for predicting FFR ≤0.80 (area under ROC curve 0.96, specificity 94.3, sensitivity 79.9). Thirty-three lesions (24%) were located in the "grey zone" (SPR 0.83-0.88). No complications were observed in 673 SPR measurements. CONCLUSIONS SPR may accurately predict FFR and can limit adenosine use to one in four lesions. Further studies are needed to confirm the validity of SPR.
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Koike N, Mai TN, Shirai M, Kubo M, Hata K, Marumoto N, Watanabe S, Sasaki Y, Mitoma S, Notsu K, Okabayashi T, Wiratsudakul A, Kabali E, Norimine J, Sekiguchi S. Detection of neutralizing antibody against porcine epidemic diarrhea virus in subclinically infected finishing pigs. J Vet Med Sci 2018; 80:1782-1786. [PMID: 30282841 PMCID: PMC6261828 DOI: 10.1292/jvms.18-0132] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to detect porcine epidemic diarrhea virus (PEDV) subclinically infected pigs shipped from non-case farms to slaughterhouses. Systematic sampling was conducted at two slaughterhouses. A total of 1,556 blood samples were collected from 80 case and non-case farms from pigs over 6 months old. Blood samples were centrifuged to obtain sera. Serial serum dilutions were subjected to serological examination for PEDV presence using Neutralization test (NT). The cut-off titer was set at titer of 1:2 dilution and farms with at least one positive sample in duplicate were classified as PED-positive farms. Several non-case farms (9.4%, 6/64) and 100% (16/16) of the case farms were indeed positive for PEDV. The proportion of seropositive animals from case farms was 63.7%, significantly different from that of non-case farms (4.3%, P<0.05). In both case and non-case farms, the proportion of seropositive animals in farrow-to-finish farms was significantly higher than in wean-to-finish farms (P<0.05). Seropositive animals in non-case farms were detected by NT in a sero-survey by sampling at slaughterhouses. Therefore, subclinically infected pigs should be considered prior to shipment.
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Affiliation(s)
- Naoki Koike
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Thi Ngan Mai
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan.,Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi 100000, Vietnam
| | - Mamoru Shirai
- Miyakonojo Meat Inspection Office, Miyazaki 885-0021, Japan
| | - Meiko Kubo
- Miyakonojo Meat Inspection Office, Miyazaki 885-0021, Japan
| | - Kazuhiro Hata
- Miyakonojo Livestock Hygiene Service Center, Miyazaki 889-4505, Japan
| | - Nobuyuki Marumoto
- Miyakonojo Livestock Hygiene Service Center, Miyazaki 889-4505, Japan
| | - Shinji Watanabe
- National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Yosuke Sasaki
- Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Shuya Mitoma
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Kosuke Notsu
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Tamaki Okabayashi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Anuwat Wiratsudakul
- Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, 999 Phuttamonthon 4 Rd., Salaya, Phuttamonthon, Nakhon Pathom, 73170, Thailand
| | - Emmanuel Kabali
- Quality Assurance Unit, Director General's Office, Zambia Medicines Regulatory Authority, Plot 6903, P.O. Box 31890, Lusaka, Republic of Zambia
| | - Junzo Norimine
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Satoshi Sekiguchi
- Department of Veterinary Science, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, Miyazaki 889-2192, Japan
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13
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Mostofa MG, Rahman MA, Koike N, Yeasmin AM, Islam N, Waliullah TM, Hosoyamada S, Shimobayashi M, Kobayashi T, Hall MN, Ushimaru T. CLIP and cohibin separate rDNA from nucleolar proteins destined for degradation by nucleophagy. J Cell Biol 2018; 217:2675-2690. [PMID: 29959231 PMCID: PMC6080932 DOI: 10.1083/jcb.201706164] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [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: 06/29/2017] [Revised: 02/15/2018] [Accepted: 05/02/2018] [Indexed: 12/16/2022] Open
Abstract
Nutrient starvation or inactivation of TORC1 induces separation of rDNA and nucleolar proteins in yeast. Mostofa et al. report that the rDNA tethering CLIP–cohibin system repositions nucleolar proteins to sites proximal to the nuclear–vacuolar junction (NVJ), where micronucleophagy occurs, whereas rDNA moves to regions distal to the NVJ. Nutrient starvation or inactivation of target of rapamycin complex 1 (TORC1) in budding yeast induces nucleophagy, a selective autophagy process that preferentially degrades nucleolar components. DNA, including ribosomal DNA (rDNA), is not degraded by nucleophagy, even though rDNA is embedded in the nucleolus. Here, we show that TORC1 inactivation promotes relocalization of nucleolar proteins and rDNA to different sites. Nucleolar proteins move to sites proximal to the nuclear–vacuolar junction (NVJ), where micronucleophagy (or piecemeal microautophagy of the nucleus) occurs, whereas rDNA dissociates from nucleolar proteins and moves to sites distal to NVJs. CLIP and cohibin, which tether rDNA to the inner nuclear membrane, were required for repositioning of nucleolar proteins and rDNA, as well as effective nucleophagic degradation of the nucleolar proteins. Furthermore, micronucleophagy itself was necessary for the repositioning of rDNA and nucleolar proteins. However, rDNA escaped from nucleophagic degradation in CLIP- or cohibin-deficient cells. This study reveals that rDNA–nucleolar protein separation is important for the nucleophagic degradation of nucleolar proteins.
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Affiliation(s)
- Md Golam Mostofa
- Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | | | - Naoki Koike
- Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Akter Mst Yeasmin
- Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Nafisa Islam
- Course of Biological Science, Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | | | - Shun Hosoyamada
- Laboratory of Genome Regeneration, Institute of Molecular and Cellular Biosciences, University of Tokyo, Tokyo, Japan
| | | | - Takehiko Kobayashi
- Laboratory of Genome Regeneration, Institute of Molecular and Cellular Biosciences, University of Tokyo, Tokyo, Japan
| | | | - Takashi Ushimaru
- Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan .,Course of Biological Science, Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
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14
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Kumabe A, Fukada J, Kota R, Koike N, Shiraishi Y, Seki S, Yoshida K, Kitagawa Y, Shigematsu N. Long-term results of concurrent chemoradiotherapy with daily-low-dose continuous infusion of 5-fluorouracil and cisplatin (LDFP) for Stage I-II esophageal carcinoma. Dis Esophagus 2018; 31:4714779. [PMID: 29228166 DOI: 10.1093/dote/dox138] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 11/01/2017] [Indexed: 12/11/2022]
Abstract
We investigated long-term treatment outcomes and the feasibility of chemoradiotherapy consisting of daily-low-dose 5-fluorouracil and cisplatin (LDFP) chemotherapy plus radiotherapy for Stage I-II squamous cell esophageal cancer. Treatment records from the 2000 through 2008 period were reviewed retrospectively. Fractionated radiotherapy was performed with a total dose of 60 Gy delivered in 2 Gy per fraction. LDFP chemotherapy, as continuous infusion of 200 mg/m2 5-fluorouracil combined with one hour infusion of 4 mg/m2 cisplatin, was administered on the same days as radiotherapy. Survival was calculated by the Kaplan-Meier method. Survival, responses, failure patterns, and toxicities were evaluated. Seventy-six (47 stage I and 29 stage II) patients were analyzed with a median follow-up of 93.6 months. The 8-year overall survival (OS), progression-free survival (PFS) and cause-specific survival (CSS) rates were 63.4%, 49.8%, and 76.7%, respectively. The 8-year OS, PFS, and CSS for stage I and stage II patients were 71.0%/56.1%/82.9% and 45.2%/40.2%/66.6%, respectively. Sixty-eight patients (89.5%) completed the treatment regimen. A complete response (CR) was achieved in 68 patients (89.5%). Twenty-five patients (36.8%) experienced recurrence after CR. The failure patterns were (overlap included): local failure (n = 12), nodal metastasis (n = 12), distant metastasis (n = 3), details unknown (n = 2). Salvage therapy was performed for local failure; endoscopic therapy (n = 7) or surgery (n = 2). Six patients remain alive without relapse after salvage endoscopic therapy. Major Grade 3 or higher acute adverse events were leukopenia (22%), anorexia (17%), and esophagitis (11%). Major late toxicities (Grade 3 or 4) involved pericardial effusion (12%), pleural effusion (4%), and esophageal stenosis (3%). Chemoradiotherapy with LDFP provided favorable long-term survival with acceptable toxicity for Stage I-II squamous cell esophageal cancer. The tumor response was excellent, but close endoscopic follow-up is essential for detecting and treating local recurrence.
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Affiliation(s)
- A Kumabe
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - J Fukada
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - R Kota
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - N Koike
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Shiraishi
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - S Seki
- Department of Radiation Oncology, Saitama Medical University Hospital, Saitama, Tokyo, Japan
| | - K Yoshida
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - N Shigematsu
- Department of Radiology and Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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15
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Koike N, Hatano Y, Ushimaru T. Heat shock transcriptional factor mediates mitochondrial unfolded protein response. Curr Genet 2018; 64:907-917. [PMID: 29423676 DOI: 10.1007/s00294-018-0809-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 01/24/2018] [Accepted: 01/29/2018] [Indexed: 12/22/2022]
Abstract
For maintenance of cytoplasmic protein quality control (PQC), cytoplasmic heat shock proteins (HSPs) negatively control heat shock transcriptional factor (HSF) in a negative feedback loop. However, how mitochondrial protein quality control (mtPQC) is maintained is largely unknown. Here we present evidence that HSF directly monitors mtPQC in the budding yeast Saccharomyces cerevisiae. Mitochondrial HSP70 (Ssc1) negatively regulated HSF activity. Importantly, HSF was localized not only in the nucleus but also on mitochondria. The mitochondrial localization of HSF was increased by heat shock and compromised by SSC1 overexpression. Furthermore, the mitochondrial protein translocation system downregulated HSF activity. Finally, mtPQC modulated the mtHSP genes SSC1 and MDJ1 via HSF, and SSC1 overexpression compromised mitochondrial function. These findings illustrate a model in which HSF directly monitors mtPQC.
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Affiliation(s)
- Naoki Koike
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka, 422-8021, Japan
| | - Yuuki Hatano
- Faculty of Science, Shizuoka University, 836 Ohya, Shizuoka, 422-8529, Japan
| | - Takashi Ushimaru
- Graduate School of Science and Technology, Shizuoka University, Ohya 836, Suruga-ku, Shizuoka, 422-8021, Japan. .,Faculty of Science, Shizuoka University, 836 Ohya, Shizuoka, 422-8529, Japan.
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16
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Koike N, Kawamura M, Ohno M, Sakimura K, Tanaka K. Exploring the epitopes of anti-MOG antibodies in the patients with inflammatory demyelinating disease presenting various clinical phenotypes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1826] [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: 11/29/2022]
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17
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Waliullah TM, Yeasmin AM, Kaneko A, Koike N, Terasawa M, Totsuka T, Ushimaru T. Rim15 and Sch9 kinases are involved in induction of autophagic degradation of ribosomes in budding yeast. Biosci Biotechnol Biochem 2016; 81:307-310. [PMID: 27659307 DOI: 10.1080/09168451.2016.1234928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Autophagic degradation of ribosomes is promoted by nutrient starvation and inactivation of target of rapamycin complex 1 (TORC1). Here we show that selective autophagic degradation of ribosomes (called ribophagy) after TORC1 inactivation requires the specific autophagy receptor Atg11. Rim15 protein kinase upregulated ribophagy, while it downregulated non-selective degradation of ribosomes.
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Affiliation(s)
| | - Akter Mst Yeasmin
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan
| | - Atsuki Kaneko
- b Department of Science, Graduate School of Integrated Science and Technology , Shizuoka University , Shizuoka , Japan
| | - Naoki Koike
- b Department of Science, Graduate School of Integrated Science and Technology , Shizuoka University , Shizuoka , Japan
| | - Mashu Terasawa
- c Faculty of Science , Shizuoka University , Shizuoka , Japan
| | - Takaya Totsuka
- c Faculty of Science , Shizuoka University , Shizuoka , Japan
| | - Takashi Ushimaru
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan.,b Department of Science, Graduate School of Integrated Science and Technology , Shizuoka University , Shizuoka , Japan.,c Faculty of Science , Shizuoka University , Shizuoka , Japan
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18
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Shimizu Y, Nagai M, Yeasmin AMST, Koike N, Talukdar MW, Ushimaru T. Elucidation of novel budding yeast separase mutants. Biosci Biotechnol Biochem 2015; 80:473-8. [PMID: 26523765 DOI: 10.1080/09168451.2015.1101337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The mitotic separase cleaves Scc1 in cohesin to allow sister chromatids to separate from each other upon anaphase onset. Separase is also required for DNA damage repair. Here, we isolated and characterized 10 temperature-sensitive (ts) mutants of separase ESP1 in the budding yeast Saccharomyces cerevisiae. All mutants were defective in sister chromatid separation at the restricted temperature. Some esp1-ts mutants were hypersensitive to the microtubule poison benomyl and/or the DNA-damaging agent bleomycin. Overexpression of securin alleviated the growth defect in some esp1-ts mutants, whereas it rather exacerbated it in others. The Drosophila Pumilio homolog MPT5 was isolated as a high-dosage suppressor of esp1-ts cells. We discuss various features of separase based on these findings.
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Affiliation(s)
- Yoshihito Shimizu
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan
| | - Masayoshi Nagai
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan
| | - Akter M S T Yeasmin
- b Faculty of Science, Graduate School of Science , Shizuoka University , Shizuoka , Japan
| | - Naoki Koike
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan
| | | | - Takashi Ushimaru
- a Graduate School of Science and Technology , Shizuoka University , Shizuoka , Japan.,b Faculty of Science, Graduate School of Science , Shizuoka University , Shizuoka , Japan
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Yabuta M, Kishi Y, Koike N, Yamaguchi M, Taniguchi F. The Importance of the Accurate Diagnostic Preoperational Magnetic Resonance Imaging (MRI) Examinations: Review of 1059 Cases That Undergoing Laparoscopic Surgery for Diagnosed Benign Uterine Myoma. J Minim Invasive Gynecol 2015; 22:S196. [DOI: 10.1016/j.jmig.2015.08.713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Koike N, Tsunemi T, Akasaka J, Shigemitsu A, Yoshimoto C, Naruse K, Kobayashi H. Urokinase-type plasminogen activator (uPA) system and invasion of early human extravillous trophoblast is regulated by hypoxia induced factor (HIF) pathway. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Kosugi C, Koda K, Denda T, Ishibashi K, Ishida H, Seike K, Sakata H, Yanagisawa S, Natsume T, Takayama W, Koike N, Matsubara H, Tanaka K, Yamazaki M, Shuto K, Suzuki M, Matsuo K, Mori M, Hirano A. Voice Trial-Results from a Multicenter Phase Ii Study of Assessment of Clinical Efficacy and Safety in Capecitabine Plus Intermittent Oxaliplatin Together with Bevacizumab As the First-Line Therapy for the Patients with Advanced Colorectal Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.27] [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: 11/12/2022] Open
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Abstract
Amniotic fluid embolism (AFE) is a rare clinical entity, sometimes fatal. A review was conducted to describe the frequency, diagnosis and pathophysiology of AFE. The reported incidences ranged from 1.9 cases per 100,000 maternities (UK) to 6.1 per 100,000 maternities (Australia), which can vary considerably, depending on the period, region of study and the definition. Although the development of amniotic fluid-specific markers would have an impact on early diagnosis, definition of AFE based on these markers is not widely accepted. To date, immunological mechanisms, amniotic fluid-dependent anaphylactic reaction and complement activation, have been proposed as potential pathogenetic and pathophysiological mechanisms. Immune cell activation induced through complement activation may be associated with the mechanism that immediately initiates maternal death, only in susceptible individuals. This review will focus on advances in the field of AFE biology and discuss the prevalence, diagnosis and pathophysiology of AFE.
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Affiliation(s)
- F Ito
- Department of Obstetrics and Gynecology, Nara Medical University , Nara , Japan
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23
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Sunaga T, Suzuki S, Kogo M, Kurihara T, Kaji S, Koike N, Harada N, Suzuki M, Kiuchi Y. The association between neutropenia and prognosis in stage III colorectal cancer patients receiving adjuvant chemotherapy. Eur J Cancer Care (Engl) 2013; 23:394-400. [PMID: 24033646 DOI: 10.1111/ecc.12120] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2013] [Indexed: 01/14/2023]
Abstract
Neutropenia during chemotherapy has been reported to be a predictor of better survival in patients with several types of cancer, although there are no reports on stage III colorectal cancer (CRC). The purpose of this study was to examine the association between neutropenia and prognosis in stage III CRC patients receiving adjuvant chemotherapy consisting of oral uracil and tegafur (UFT) plus leucovorin (LV). We retrospectively analysed 123 patients with stage III CRC who received UFT/LV as adjuvant chemotherapy. The end-point was disease-free survival (DFS). Survival curves of the two categories (neutropenia absent vs. present) were estimated using the Kaplan-Meier method and compared by the log-rank test. We estimated the hazard ratio (HR) for DFS according to neutropenia after adjustment for covariates by multivariate analyses using Cox's regression analysis. A total of 33 (26.8%) patients experienced neutropenia. Patients without neutropenia showed a significantly lower DFS than those with neutropenia (3-year DFS 57.3% vs. 81.2%, P = 0.0213). By multivariate analysis, neutropenia and histological type were independent prognostic factors, with HR of 0.410 (neutropenia absent vs. present, P = 0.045) and 4.793 (well to moderately differentiated vs. poorly differentiated, P = 0.004) respectively. We demonstrated that neutropenia occurring during adjuvant chemotherapy consisting of UFT/LV may be a prognostic factor of recurrence in stage III CRC patients.
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Affiliation(s)
- T Sunaga
- Department of Pharmacy, Hachioji Digestive Disease Hospital, Tokyo, Japan; Department of Pharmacy Education, Showa University School of Pharmacy, Tokyo, Japan
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24
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Yorozu A, Toya K, Yoshida K, Koike N, Takahashi A, Saito S, Nishiyama T, Yagi Y, Namidome R, Ashikari A. PO-162 IMPACT OF DOSE ON INTERMEDIATE-RISK PROSTATE CANCER PATIENTS TREATED WITH BRACHYTHERAPY ALONE OR BOOST. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72128-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Yorozu A, Toya K, Saito S, Nishiyama T, Yoshida K, Koike N, Takahashi A, Yagi Y, Namidome R, Ashikari A. PO-0688 IMPACT OF RADIATION DOSE ON INTERMEDIATE-RISK PROSTATE CANCER PATIENTS TREATED WITH BRACHYTHERAPY ALONE OR BOOST. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71021-6] [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: 11/29/2022]
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26
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Abstract
BACKGROUND One of the major obstacles in regenerating thick, complex tissues such as the liver is their need for vascularization, which is essential to maintain cell viability during tissue growth and to induce structural organization. Herein, we have described a method to engineer a functional human vascular network. METHODS Enhanced green fluorescence protein-labeled human umbilical vein endothelial cells (GFP-HUVECs) were cocultivated with kusabira orange-labeled human mesenchymal stem cells (KO-hMSCs) inside a collagen/fibronectin matrix. Premature vascular network formation was visualized by fluorescence microscopy imaging. Furthermore, constructs prevascularized in vitro were implanted into a transparency window in immunodeficient mice. RESULTS Following several days of cultivation, GFP-HUVECs formed vessel-like structures that were stabilized by pericytes differentiated from KO-hMSCs. After implantation in vivo, the patency of human vascular structures was proved by rhodamine dextran infusion. These functional vascular structures remained for over 2 months. DISCUSSION Vascularization is the key challenge to organ generation. We successfully generated human vascular networks inside a matrix. Integration of parenchymal cells using our engineering technique should facilitate future efforts to reconstitute vascularized human organ systems in vitro.
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Affiliation(s)
- T Takebe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
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27
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Sanuki-Fujimoto N, Takeda A, Ohashi T, Kunieda E, Iwabuchi S, Takatsuka K, Koike N, Shigematsu N. CT evaluations of focal liver reactions following stereotactic body radiotherapy for small hepatocellular carcinoma with cirrhosis: relationship between imaging appearance and baseline liver function. Br J Radiol 2011; 83:1063-71. [PMID: 21088090 DOI: 10.1259/bjr/74105551] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
This study aimed to assess the imaging appearances of focal liver reactions following stereotactic body radiotherapy (SBRT) for small hepatocellular carcinoma (HCC) and to examine relationships between imaging appearance and baseline liver function. We retrospectively studied 50 lesions in 47 patients treated with SBRT (30-40 Gy in 5 fractions) for HCC, who were followed up for more than 6 months. After SBRT, all patients underwent regular follow-ups with blood tests and dynamic CT scans. At a median follow-up of 18.1 months (range 6.2-43.7 months), all lesions but one were controlled. 3 density patterns describing focal normal liver reactions around HCC tumours were identified in pre-contrast, arterial and portal-venous phase scans: iso/iso/iso in 4 patients (Type A), low/iso/iso in 8 patients (Type B) and low/iso (or high)/high in 38 patients (Type C). Imaging changes in the normal liver surrounding the treated HCC began at a median of 3 months after SBRT, peaked at a median of 6 months and disappeared 9 months later. Liver function, as assessed by the Child-Pugh classification, was the only factor that differed significantly between reactions to treatment showing "non-enhanced" (Type A and B) and "enhanced" (Type C) appearances in CT. Hence, liver tissue with preserved function is more likely to be well enhanced in the delayed phase of a dynamic contrast-enhanced CT scan. The CT appearances of normal liver seen in reaction to the treatment of an HCC by SBRT were therefore related to background liver function and should not be misread as recurrence of HCC.
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Kumagai H, Takemura M, Mugishima M, Itoh A, Yamazaki K, Koike N, Ishikawa N, Zama K, Kodaka Y. Heart Rate Variation in a CLS Pacemaker Patient during Chorus Singing and Evaluation of Effectiveness of CLS Function: A Case Report. J Arrhythm 2011. [DOI: 10.4020/jhrs.27.pj1_047] [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: 11/11/2022] Open
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29
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Takeda A, Ohashi T, Kunieda E, Sanuki N, Enomoto T, Takeda T, Oku Y, Koike N, Shigematsu N. Clinical, Tumor-related and Dosimetric Factors among Grade 0-1, Grade 2, and Grade 3 Radiation Pneumonitis after Stereotactic Body Radiotherapy (SBRT) for Lung Tumors. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Shukla S, Lawrence A, Aggarwal A, Naik S, Gullick NJ, Evans HG, Jayaraj D, Kirkham BW, Taams LS, Judah SM, Nixon N, Dawes P, Mattey DL, Yeo L, Schmutz C, Toellner KM, Salmon M, Filer AD, Buckley C, Raza K, Scheel-Toellner D, Hashizume M, Yoshida H, Koike N, Suzuki M, Mihara M, Stavropoulos-Kalinoglou A, Metsios GS, Douglas KM, Panoulas VF, Koutedakis Y, Kitas GD, Church LD, Filer AD, Hildago E, Howlett K, Thomas A, Rapecki S, Scheel-Toellner D, Buckley CD, Raza K, Juarez M, Kolasinski J, Govindan J, Quilter A, Williamson L, Collins DA, Price EJ, Gasparyan AY, Stavropoulos-Kalinoglou A, Toms TE, Douglas K, Kitas GD, Lachmann HJ, Kuemmerle-Deschner JB, Hachulla E, Hoyer J, Smith J, Leslie K, Kone-Paut I, Braun J, Widmer A, Patel N, Preiss R, Hawkins PN. Cytokines and Inflammatory Mediators [30-39]: 30. The LPS Stimulated Production of Interleukin-10 is not Associated with -819C/T and -592C/A Promoter Polymorphisms in Healthy Indian Subjects. Rheumatology (Oxford) 2010. [DOI: 10.1093/rheumatology/keq715] [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: 11/13/2022] Open
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31
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Okonogi S, Takihara H. [Aortic dissection and annulo-aortic ectasia complicating systemic lupus erythematousus; report of a case]. Kyobu Geka 2009; 62:492-495. [PMID: 19522212] [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: 05/27/2023]
Abstract
A 31-year-old man with systemic lupus erythematosus had received long term steroid therapy. He had no compliant, but magnetic resonance imaging showed aortic dissection and annulo-aortic ectasia. Echocardiogram showed severe aortic regurgitation. Therefore aortic root replacement was performed. A histological study of the aortic wall demonstrated myxomatous degeneration in the media. He recovered uneventfully, except for receiving continious hemodia filtration during 4 days after the operation
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Affiliation(s)
- S Okada
- Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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32
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Takihara H. [Infective endocarditis with the fistula from sinus Valsalva to right atrium and ventricle; report of a case]. Kyobu Geka 2009; 62:409-412. [PMID: 19425384] [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: 05/27/2023]
Abstract
A 77-year-old man complained general fatigue and fever. Preoperative echocardiography revealed vegetation of aortic valve, abnormal shunt flow from the sinus of Valsalva was detected in the right atrium and ventricle without perivalvular abscess cavity or aneurysm of the sinus of Valsalva. He diagnosed aortic valve endocarditis with aorto-right atrium and ventricle fistula. He received aortic valve replacement and patch closure at the sinus of Valsalva using the pericardium. Residural aortic-right atrium and ventricle shunt was not detected after the operation, the post operative course was uneventful without congestive heart failure nor signs of infection.
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Affiliation(s)
- Syuichi Okada
- Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Okonogi S, Takihara H. [Large coronary aneurysm after coronary intervention for acute myocardial infarction; report of a case]. Kyobu Geka 2009; 62:336-339. [PMID: 19348221] [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: 05/27/2023]
Abstract
A 59-year-old man was admitted to our hospital because of angina pectoris and a large right coronary aneurysm. Two years previously, he underwent percutaneous coronary balloon angioplasty for a stenotic lesion in right coronary artery (RCA) #3. Angiography and computed tomography showed a large right coronary aneurysm. On-pump coronary artery bypass grafting (CABG), ligation of RCA proximal and distal to the aneurysm, resection of the aneurysm was performed successfully. Postoperative course was uneventful with satisfactory angiographic results.
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Affiliation(s)
- Syuichi Okada
- Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Okonogi S, Takihara H, Adachi H. [Perforation due to new myocardial infarction long time; report of a case]. Kyobu Geka 2009; 62:241-245. [PMID: 19280959] [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: 05/27/2023]
Abstract
A 65-year-old man was admitted to the hospital because of effort chest pain, 8 years after he received coronary artery bypass grafting [CABG: left internal thoracic artery (LITA) to left anterior descending artery (LAD), saphenous vein graft (SVG) to first diagonal branch (D1) and SVG to postero-lateral branch (PL)]. Emergent coronary angiography revealed right coronary artery occlusion with well patent bypass grafts. Percutaneus coronary intervention (PCI) was performed successfully, but 9 hours later, ventricular septal perforation (VSP) was occurred. Swan-Ganz catheter revealed that pulmonary to systemic blood flow ratio (Qp/Qs) was 2.6. In spite of intensive medical care, his hemodynamics was gradually exacerbated. Subsequent intracavitary repair with equine pericardial patch, sutured using interrupted mattress sutures with felt pledgets, was performed. He had an uneventful recovery thereafter, extubated and weaned from an intra-aortic balloon pumping at the 1st day. He was discharged from hospital on the 27th postoperative day.
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Affiliation(s)
- S Okada
- Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Okonogi S, Takihara H. [Endovascular stent-grafting for mycotic thoracic aortic aneurysm]. Kyobu Geka 2009; 62:96-100. [PMID: 19202926] [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: 05/27/2023]
Abstract
We report 3 cases of endovascular stent-grafting (ESG) for mycotic thoracic aortic aneurysm. The case 1 was a rupture of pseudoaneurysm of the descending aorta caused by mediastinitis due to perforation of esophageal ulcer. The patient underwent emergent ESG for temporary control of the rupture. He underwent esophagus reconstruction 5 month after ESG. The case 2 was admitted due to inflammatory reaction. She was diagnosed with mycotic descending aortic aneurysm and underwent elective ESG because of her old age. Her postoperative course was uneventful and no infection recurred. The case 3 underwent ESG for a ruptured mycotic descending aortic aneurysm. But 113 days after ESG, he underwent ESG again for a ruptured endoleak of the stentgraft. His blood culture demonstrated methillin-resistant Staphylococcus aureus (MRSA). He died of rupture to bronchus and esophagus at 18th day after ESG. We believe that ESG is useful in high risk patients for temporary management of the rupture.
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Affiliation(s)
- S Okada
- Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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Okada S, Kaneko T, Ezure M, Satoh Y, Hasegawa Y, Koike N, Okonogi S, Takihara H. [Successful consecutive seven time's surgical repair of Marfan syndrome]. Kyobu Geka 2008; 61:748-753. [PMID: 18697454] [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: 05/26/2023]
Abstract
We report a patient with Marfan syndrome who received successful 7 consecutive operations during 11 years. She underwent descending aortic replacement for chronic type B dissection at the age of 24. Mitral valve replacement (MVR) was performed for mitral regurgitation (MR) at the age of 30, and abdominal aortic replacement was done for persistent dissection at the age of 31, aortic root and arch replacement was done at the age of 34. The 9 months later, she received re-MVR for dysfunction of bioprosthesis and tricuspid valve anuloplasty (TAP) for tricuspid regurgitation (TR). But severe paravalvuler leakage of mitral valve necessitated direct closure of detachment. Thoracoabdominal replacement was performed for rupture of persistent dissection at the age of 35. She was discharged on the 54th day after the 7th surgery.
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Affiliation(s)
- S Okada
- Division of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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37
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Koike N, Kaneko T, Ezure M, Sato Y, Aizaki M, Okada S, Morishita Y. [Left atrial myxoma combined with coronary artery bypass grafting]. Kyobu Geka 2006; 59:1089-94. [PMID: 17094547] [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: 05/12/2023]
Abstract
We experienced 2 cases of surgical treatment for left atrial myxoma combined with coronary artery bypass grafting (CABG) using only in situ arterial grafts. A 58-year-old man who had undergone CABG [left internal thoracic artery (LITA)-right coronary artery (RCA) and saphenous vein graft (SVG)-left anterior descending artery (LAD)] 14 years before was admitted to our hospital, complaining of anterior chest pain. Coronary arteriography demonstrated total occlusion of the LAD and RCA, as well as the stenosis of high lateral branch (HL) and SVG. Left atrial myxoma was incidentally detected by echocardiography. Myxoma was resected at first, and then the right internal thoracic artery (RITA) was anastomosed to the LAD. The postoperative course was uneventful. A 69-year-old woman was admitted to another hospital, complaining of chest pain and dyspnea. Coronary arteriography revealed stenosis of LAD, left circumflex artery (LCx) and HL, as well as left main trunk (LMT). Left atrial myxoma was incidentally detected by echocardiography. Myxoma was resected at first, and then CABG [LITA-HL, gastroepiploic artery (GEA)-RCA and RITA-LAD] was carried out. The postoperative course was uneventful. The priority between CABG and the surgical treatment for cardiac myxoma remains controversial from the point of view of myocardial protection and prevention of systemic embolism of myxomal fragment.
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Affiliation(s)
- N Koike
- Division of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan
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Ghosh M, Kamma H, Kawamoto T, Koike N, Miwa M, Kapoor VK, Krishnani N, Agrawal S, Ohkohchi N, Todoroki T. MUC 1 core protein as a marker of gallbladder malignancy. Eur J Surg Oncol 2005; 31:891-6. [PMID: 15922536 DOI: 10.1016/j.ejso.2005.03.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [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: 09/13/2004] [Revised: 02/08/2005] [Accepted: 03/31/2005] [Indexed: 11/29/2022] Open
Abstract
AIM The significance of MUC 1 expression in the gallbladder tissues in relation to cancer and non-cancer disease is not well understood. The aim of this study was to clarify the significance of MUC 1 expression. MATERIALS AND METHODS A monoclonal antibody (CA 15--3; DF 3) was applied to stain MUC 1 core protein in surgical specimens. RESULTS MUC 1 expression is significantly higher (p<0.0001) in gallbladder cancer (69/88) compare to non-cancerous tissue, while, very trace in normal and inflammatory tissues. The expression rate was significantly lower (p<0.0001) when the cancer did not penetrate the mucosal layer than when cancers did penetrate this layer. The MUC 1 expression rate was (4/14) in T1 tumours, (11/14) in T4, (40/45) in T3, and (14/15) in T2, respectively. Every cell of normal and inflammatory mucosa, and T1 cancers had the polarized pattern. The depolarized pattern was dominant in cancer cells from the advanced tumours of T2, T3 and T4. That is, (45/74) of cancer cells from the mucosal layer and (58/74) of penetrating cancer cells in submucosal layer had the depolarized pattern. There was no significant correlation of MUC 1 expression rate and staining pattern with cancer differentiation and microscopic venous invasion. On the other hand, lymphatic vessel invasion was significantly correlated with the staining pattern but not with expression rate. CONCLUSION MUC 1 core protein expression rate and pattern are suggesting that MUC 1 core protein would be a marker of malignant transformation of gallbladder epithelium and its depolarized expression would also be a marker of invasion of gallbladder cancer.
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Affiliation(s)
- M Ghosh
- Department of Gastroenterological and Hepatobiliary Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba-Shi 305, Japan
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Asavaroengchai W, Kotera Y, Koike N, Pilon-Thomas S, Mulé JJ. Augmentation of antitumor immune responses after adoptive transfer of bone marrow derived from donors immunized with tumor lysate-pulsed dendritic cells. Biol Blood Marrow Transplant 2005; 10:524-33. [PMID: 15282530 DOI: 10.1016/j.bbmt.2004.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We demonstrated previously that tumor lysate-pulsed dendritic cells (TP-DC) could mediate a specific and long-lasting antitumor immune response against a weakly immunogenic breast tumor during early lymphoid reconstitution. The purpose of this study was to examine the potential therapeutic efficacy of bone marrow transplants from TP-DC-vaccinated donors. In 2 aggressive metastatic models, bone marrow transplantation with donor bone marrow cells from TP-DC-immunized mice mediated a tumor-specific immune response in the recipient, and this caused regressions of preexisting tumor metastases. After vaccination with TP-DC, donors harbored increased numbers of both activated CD4+ and CD8+ T-cell populations in the bone marrow. Adoptive transfer of T cells purified from the bone marrow of TP-DC-vaccinated mice led to a reduction in preestablished lung metastases, whereas depletion of T cells from bone marrow abolished this effect. By using T cells derived from the bone marrow of TP-DC-vaccinated major histocompatibility complex class I and class II knockout mice, the effector cells required for the observed antitumor effect were determined to be major histocompatibility complex class I-restricted CD8+ T cells. Additionally, the tumor burden in TP-DC-immunized transplant recipients could be reduced further by repetitive TP-DC immunizations after bone marrow transplantation. Collectively, these results demonstrate an important therapeutic role of bone marrow from TP-DC-immunized donors and raise the potential for this approach in patients with advanced cancer.
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MESH Headings
- Adoptive Transfer
- Animals
- Antigens, CD/analysis
- Antigens, Neoplasm/immunology
- Bone Marrow Cells/cytology
- Bone Marrow Cells/immunology
- Bone Marrow Transplantation/immunology
- Bone Marrow Transplantation/methods
- Coculture Techniques
- Dendritic Cells/immunology
- Dendritic Cells/transplantation
- Female
- Flow Cytometry
- Genes, MHC Class I/genetics
- Genes, MHC Class I/immunology
- Immunophenotyping
- Interferon-gamma/metabolism
- Lung Neoplasms/immunology
- Lung Neoplasms/pathology
- Lung Neoplasms/secondary
- Lymphocyte Activation/immunology
- Lymphocyte Depletion
- Mammary Neoplasms, Experimental/immunology
- Mammary Neoplasms, Experimental/pathology
- Melanoma, Experimental/immunology
- Melanoma, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- T-Lymphocytes/cytology
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Vaccination
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Affiliation(s)
- W Asavaroengchai
- Department of Surgery and Tumor Immunology and Immunotherapy Program of the Comprehensive Cancer Center and Graduate Program in Immunology, University of Michigan Health System, Ann Arbor, Michigan, USA
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Koike N, Takeyoshi I, Ohki S, Tokumine M, Morishita Y. Comparison of left ventricular tissue and right atrial tissue for activation of mitogen-activated protein kinases in canine heart transplantation from non-heart-beating donors. J Heart Lung Transplant 2004. [DOI: 10.1016/j.healun.2003.11.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Kase H, Aoyama S, Ichimura M, Ikeda K, Ishii A, Kanda T, Koga K, Koike N, Kurokawa M, Kuwana Y, Mori A, Nakamura J, Nonaka H, Ochi M, Saki M, Shimada J, Shindou T, Shiozaki S, Suzuki F, Takeda M, Yanagawa K, Richardson PJ, Jenner P, Bedard P, Borrelli E, Hauser RA, Chase TN. Industry forum: Progress in pursuit of therapeutic A2A antagonists: The adenosine A2A receptor selective antagonist KW6002: Research and development toward a novel nondopaminergic therapy for Parkinson's disease. Neurology 2003; 61:S97-100. [PMID: 14663020 DOI: 10.1212/01.wnl.0000095219.22086.31] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Research and development of the adenosine A2A receptor selective antagonist KW6002 have focused on developing a novel nondopaminergic therapy for Parkinson's disease (PD). Salient pharmacologic features of KW6002 were investigated in several animal models of PD. In rodent and primate models, KW6002 provides symptomatic relief from parkinsonian motor deficits without provoking dyskinesia or exacerbating existing dyskinesias. The major target neurons of the A2A receptor antagonist were identified as GABAergic striatopallidal medium spiny neurons. A possible mechanism of A2A receptor antagonist action in PD has been proposed based on the involvement of striatal and pallidal presynaptic A2A receptors in the "dual" modulation of GABAergic synaptic transmission. Experiments with dopamine D2 receptor knockout mice showed that A2A receptors can function and anti-PD activities of A2A antagonists can occur independent of the dopaminergic system. Clinical studies of KW6002 in patients with advanced PD with L-dopa-related motor complications yielded promising results with regard to motor symptom relief without motor side effects. The development of KW6002 represents the first time that a concept gleaned from A2A biologic research has been applied successfully to "proof of concept" clinical studies. The selective A2A antagonist should provide a novel nondopaminergic approach to PD therapy.
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Koike N, Takeyoshi I, Ohki S, Tokumine M, Matsumoto K, Morishita Y. Effects of P38 mitogen-activated protein kinase inhibitor as an additive to celsior solution on canine heart transplantation from non-heart-beating donors. J Heart Lung Transplant 2003. [DOI: 10.1016/s1053-2498(02)00909-9] [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: 11/29/2022] Open
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Shigeta S, Mori S, Watanabe F, Takahashi K, Nagata T, Koike N, Wakayama T, Saneyoshi M. Synthesis and antiherpesvirus activities of 5-alkyl-2-thiopyrimidine nucleoside analogues. Antivir Chem Chemother 2002; 13:67-82. [PMID: 12238531 DOI: 10.1177/095632020201300201] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Twenty 5-alkyl-2-thiopyrimidine nucleosides were newly synthesized and examined for antiviral activities against herpes simplex virus (HSV), varicella-zoster virus (VZV) and human cytomegalovirus (HCMV). In this study, 2'-deoxy-5-alkyl-2-thiocytidine analogues had lower 50% effective concentration (EC50) values against HSV-1, and 2'-deoxy-5-alkyl-2-thiouridine analogues showed lower EC50 against VZV than their congeners of arabinoside form. Among the compounds examined, 2'-deoxy-5-ethyl and 5-propyl-2-thiocytidine (TN-53 and TN-54) were most potent and selective anti-HSV compounds. Their EC50s were 0.04 and 0.15 microM, and selectivity indexes were more than 7,215 and 1,849, respectively. On the other hand, 2'-deoxy-5-propyl-2-thiouridine (TN-51), 5-bromovinyl-2-thiouracil arabinoside (TN-65) and 5-styryl-2-thiouracil arabinoside (TN-67) were most potent and selective anti-VZV compounds. Their EC50s were 3.1, 3.8 and 2.6 pM for CaQu strain of VZV, respectively, and 2.1 to 3.0 times lower than that of acyclovir. All 2-thiopyrimidine nucleoside analogues did not show antiviral activities against thymidine kinase (TK) negative strains of HSV-1 and VZV. Only three 2-thiocytosine arabinoside compounds showed marginal anti-CMV activities (EC50s were 57-159 pM). All of the five alkyl-2-thio-pyrimidine nucleoside analogues examined were not cytotoxic to human lymphoblastoid cells (RPM18226) and human embryonic fibroblast cells (MRC-5) at 240 microM (100 microg/ml) or more. Regarding the structure-activity relationship of 5-alkyl-2-thiopyrimidine nucleoside analogues, the following remarks will be noted. Elongation of 5-alkyl chain (methyl to ethyl) of 2-thiocytosine in both deoxyribosyl and arabinosyl nucleosides increased anti-HSV-1 activity but not anti-VZV activity. Furthermore, elongation of the same chain (ethyl to propyl) of 2-thiodeoxyuridine increased anti-VZV activity whereas it did not in the case of 2-thiouracil arabinosides.
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Affiliation(s)
- S Shigeta
- Department of Microbiology, School of Medicine, Fukushima Medical University, Japan.
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Oshima Y, Nozue M, Taniguchi H, Seino KI, Koike N, Kawamoto T, Todoroki T, Fukao K. Transition and improvement in surgical treatment for rectal cancer during the last 21 years in our department. Int J Oncol 2001; 19:1283-6. [PMID: 11713601 DOI: 10.3892/ijo.19.6.1283] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The subject of this study was to examine the net effect of numerous changes in basic strategies, personnel and devices, upon the clinical courses and outcomes of rectal cancer patients. A total of 151 rectal cancer patients who underwent low anterior resection were divided into 4 groups (period 1 to 4) based upon the time period of the operation. They were compared among groups based upon the following parameters: blood loss, operation time, incidence of leakage and urinary dysfunction, incidence of ileus, duration of naso-gastric tube insertion, timing of initial oral feeding and survival. The blood loss during the operations, urinary dysfunction and duration of naso-gastric tube insertion tended to decrease in every period. Timing of initial oral feeding became faster. The operation times, incidence of leakage and ileus were nearly the same in each period. The 5-year survival rates on Dukes' C cases were 100% in period 4, 82.4% in period 3 and 50% in period 2. Survival rates became better. Our net outcome for rectal cancer treatment was satisfactory, because the survival rates became better under function preserving strategies.
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Affiliation(s)
- Y Oshima
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
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Suzuki M, Hamada Y, Ishikawa S, Mohara J, Koike N, Nameki T, Kado H, Morishita Y. [Right ventricular outflow tract reconstruction using a three-valved extracardiac conduit of expanded polytetrafluoroethylene vessel graft in the Ross operation: a pediatric case report]. Kyobu Geka 2001; 54:1118-20. [PMID: 11761897] [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: 02/23/2023]
Abstract
A 16-year-old boy was diagnosed as having severe aortic regurgitation and moderate aortic stenosis due to congenital aortic bicuspid valve. A chest X-ray film showed the cardiothoracic ratio (CTR) of 64% and echocardiography revealed severe dilation of the left ventricular dimension with severe wall thickness. An electrocardiogram showed multiple ventricular arrhythmias. The patient underwent the Ross operation with the reconstruction between the right ventricle and the pulmonary arteries using a three-valved conduit which was made by an expanded polytetrafuloroethylene vessel graft. Ventricular arrhythmia disappeared just after the operation and left ventricular dimensions improved with the CTR of 53% except mild regurgitation of the neo-aortic valve three months later.
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Affiliation(s)
- M Suzuki
- Gunma Children's Medical Center, Gunma, Japan
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46
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Ishibashi Y, Maita H, Yano M, Koike N, Tamai K, Ariga H, Iguchi-Ariga SM. Pim-1 translocates sorting nexin 6/TRAF4-associated factor 2 from cytoplasm to nucleus. FEBS Lett 2001; 506:33-8. [PMID: 11591366 DOI: 10.1016/s0014-5793(01)02881-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Pim-1, an oncogene product of serine/threonine kinase, has been found to play roles in apoptosis induction/suppression, cell-cycle progression and transcriptional regulation by phosphorylating the target proteins involved in these processes. The target proteins phosphorylated by Pim-1, including p100, Cdc25A, PAP-1 and heterochromatin protein 1, have been identified. The precise functions of Pim-1, however, are still poorly understood. In this study, we identified tumor necrosis factor receptor-associated factor 4-associated factor 2/sorting nexin 6 (TFAF2/SNX6) as a Pim-1-binding protein, and we found that TFAF2/SNX6 was phosphorylated and translocated from the cytoplasm to nucleus by Pim-1. This translocation of the protein was not affected by Pim-1-dependent phosphorylation. Since sorting nexins, including TFAF2/SNX6, have been reported to be located in the cytoplasm or membrane by association with several receptors of tyrosine- or serine/threonine-kinase, this is the first report of TFAF2/SNX6 being located in the nucleus after binding to Pim-1.
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Affiliation(s)
- Y Ishibashi
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
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Yoshida S, Kondo T, Todoroki T, Koike N, Kawamoto T, Nakagawa Y, Fukao K, Shimizu W, Ohara K, Moon Y, Yamamoto Y. [Chemoradiotherapy and salvage surgery in a patient with advanced esophageal cancer]. Gan To Kagaku Ryoho 2001; 28:1145-8. [PMID: 11525034] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
We report a case of advanced esophageal cancer, which was treated by chemoradiotherapy combined with surgical treatment. Moreover, 14 advanced esophageal cancer patients treated by chemoradiotherapy are discussed. The chemoradiotherapy showed beneficial control of the tumor; however, it sometimes leads to esophageal stenosis and ulcer. We conclude that additional salvage surgery is needed for such complications.
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Affiliation(s)
- S Yoshida
- Dept. of Surgery, Institute of Clinical Medicine, University of Tsukuba
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Abstract
Thyroid gland is composed of many spheroid structures called thyroid follicles, in which thyrocytes are integrated in their specific structural and functional polarization. In conventional monolayer and floating cultures, the cells cannot reorganize follicle structures with normal polarity. By contrast, in a 3-D collagen gel culture thyrocytes easily and stably reconstruct follicles with physiological polarity. Integration of thyrocyte growth and differentiation appears to result in eventual thyroid folliculogenesis. 3-D collagen gel culture and subacute thyroiditis, a specific thyroid disorder, are the promising models for addressing the mechanism of thyroid folliculogenesis. Because formation of 3-D follicles actively occurs both in this culture system and at the regenerative stage of the disease. The understanding of the mechanistic basis of folliculogenesis is prerequisite for establishment of an artificial thyroid tissue, which would enable a more physiological approach to the treatment of hypothyroidism caused by various diseases and surgical processes than conventional hormone replacement therapy. In this review, we have discussed thyrocyte integration, and thyroid folliculogenesis and tissue regeneration, to further thyroid biology. Also, we briefly discussed a perspective on thyroid tissue regeneration and engineering.
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Affiliation(s)
- S Toda
- Department of Pathology, Saga Medical School, Japan
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Abstract
The thyroid gland is composed of many ball-like structures called thyroid follicles, which are supported by the interfollicular extracellular matrix (ECM) and a capillary network. The component thyrocytes are highly integrated in their specific structural and functional polarization. In conventional monolayer and floating culture systems, thyrocytes cannot organize themselves into follicles with normal polarity. In contrast, in 3-D collagen gel culture, thyrocytes easily form stable follicles with physiological polarity. Integration of thyrocyte growth and differentiation results ultimately in thyroid folliculogenesis. This culture method and subacute thyroiditis are two promising models for addressing mechanisms of folliculogenesis, because thyroid-follicle formation actively occurs both in the culture system and at the regenerative phase of the disorder. The understanding of the mechanistic basis of folliculogenesis is prerequisite for generation of artificial thyroid tissue, which would enable a more physiological strategy to the treatment of hypothyroidism caused by various diseases and surgical processes than conventional hormone replacement therapy. We review here thyrocyte integration, and thyroid folliculogenesis and tissue regeneration. We also briefly discuss a perspective for thyroid tissue regeneration and engineering.
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Affiliation(s)
- S Toda
- Department of Pathology, Saga Medical School and; Koike Thyroid Hospital, Saga, Japan.
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50
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Ishida A, Nakano T, Uemura A, Yamashita N, Tanabe H, Koike N. Light-use properties in two sun-adapted shrubs with contrasting canopy structures. Tree Physiol 2001; 21:497-504. [PMID: 11359707 DOI: 10.1093/treephys/21.8.497] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We investigated the impact of high solar irradiance and elevated temperature on carbon gain by two, co-occurring, sun-adapted, dwarf shrub species, Planchonella obovata var. dubia (Koidz.) Hatusima and Hibiscus glaber Matsumura, growing on sun-exposed ridges in the Bonin Islands, in the subtropical Pacific Ocean. Planchonella had steeply inclined, longer lived, sclerophyllous leaves, whereas Hibiscus has thinner, more horizontally oriented, and shorter lived leaves. We tested the hypothesis that leaf physiological tolerance to high light is lower in Planchonella than in Hibiscus. Under relatively high irradiances (photosynthetic photon flux density, PPFD, > 500 micromol m(-2) s(-1)), net photosynthetic rate (P(n)) was about 8.0 and 0.4 micromol m(-2) s(-1) in mature and young leaves of Planchonella, and about 12.4 and 10.3 micromol m(-2) s(-1) in mature and young leaves of Hibiscus, respectively. Both P(n) and photosystem II (PSII) quantum yield at a given PPFD were lower in Planchonella than in Hibiscus, whereas non-photochemical quenching (NPQ) at a given PPFD was higher in Planchonella. When leaf discs were exposed to high light (1900 micromol m(-2) s(-1) PPFD) at 37, 40 or 43 degrees C for 3 h, the recovery of PSII quantum yield (F(v)/F(m)) in the following 60-min dark period was slower in Planchonella than in Hibiscus, indicating that the ability of PSII to tolerate high light and high temperature was less in Planchonella than in Hibiscus. We postulate that there is a linkage between leaf display and leaf photochemical ability in sun-adapted shrub species.
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Affiliation(s)
- A Ishida
- Forestry and Forest Products Research Institute (FFPRI), P.O. Box 16, Tsukuba Norin Danchi, Ibaraki 305-8687, Japan
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