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Tomomatsu M, Imamura N, Izumi H, Watanabe M, Ikeda M, Ide T, Uchinomiya S, Ojida A, Jutanom M, Morimoto K, Yamada KI. Oxidized-LDL Induces Metabolic Dysfunction in Retinal Pigment Epithelial Cells. Biol Pharm Bull 2024; 47:641-651. [PMID: 38508744 DOI: 10.1248/bpb.b23-00849] [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] [Indexed: 03/22/2024]
Abstract
Recently, mitochondrial dysfunction has gained attention as a causative factor in the pathogenesis and progression of age-related macular degeneration (AMD). Mitochondrial damage plays a key role in metabolism and disrupts the balance of intracellular metabolic pathways, such as oxidative phosphorylation (OXPHOS) and glycolysis. In this study, we focused on oxidized low-density lipoprotein (ox-LDL), a major constituent of drusen that accumulates in the retina of patients with AMD, and investigated whether it could be a causative factor for metabolic alterations in retinal pigment epithelial (RPE) cells. We found that prolonged exposure to ox-LDL induced changes in fatty acid β-oxidation (FAO), OXPHOS, and glycolytic activity and increased the mitochondrial reactive oxygen species production in RPE cells. Notably, the effects on metabolic alterations varied with the concentration and duration of ox-LDL treatment. In addition, we addressed the limitations of using ARPE-19 cells for retinal disease research by highlighting their lower barrier function and FAO activity compared to those of induced pluripotent stem cell-derived RPE cells. Our findings can aid in the elucidation of mechanisms underlying the metabolic alterations in AMD.
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Affiliation(s)
- Manami Tomomatsu
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Naoto Imamura
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Hoshimi Izumi
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Masatsugu Watanabe
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University
- Division of Cardiovascular Medicine, Research Institute of Angiocardiology, Faculty of Medical Sciences, Kyushu University
- Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical Sciences, Kyushu University
| | - Masataka Ikeda
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University
- Division of Cardiovascular Medicine, Research Institute of Angiocardiology, Faculty of Medical Sciences, Kyushu University
| | - Tomomi Ide
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University
- Division of Cardiovascular Medicine, Research Institute of Angiocardiology, Faculty of Medical Sciences, Kyushu University
| | - Shohei Uchinomiya
- Department of Medicinal Chemistry and Chemical Biology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Akio Ojida
- Department of Medicinal Chemistry and Chemical Biology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Mirinthorn Jutanom
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Kazushi Morimoto
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
| | - Ken-Ichi Yamada
- Department of Molecular Pathobiology, Faculty of Pharmaceutical Sciences, Kyushu University
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2
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Champiat S, Boyer M, Paz-Ares L, Schoenfeld A, Izumi H, Govindan R, Carlisle J, Borghaei H, Johnson M, Steeghs N, Vokes E, Dowlati A, Zhang Y, Pati A, Ju CH, Mukherjee S, Chen X, Hashemi Sadraei N, Hummel HD. 147P Characterizing CRS in phase I study of DLL3-targeted T cell engager tarlatamab in small cell lung cancer. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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3
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Izumi H, Sakamoto T, Uchibori K, Nishino K, Sakakibara-Konishi J, Nomura S, Ryohei K, Udagawa H, Shibata Y, Ikeda T, Niho S, Sakai T, Zenke Y, Nosaki K, Matsumoto S, Yoh K, Goto K. 997P Phase I study of brigatinib plus panitumumab in patients with advanced EGFR-mutated non-small cell lung cancer resistant to osimertinib (BEBOP): Early termination due to severe early onset pneumonitis by brigatinib. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1123] [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: 11/16/2022] Open
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4
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Okahisa M, Udagawa H, Matsumoto S, Kato T, Oizumi S, Furuya N, Hayakawa D, Toyozawa R, Nishiyama A, Ohashi K, Miyamoto S, Nishino K, Oi H, Sakai T, Shibata Y, Izumi H, Sugiyama E, Nosaki K, Zenke Y, Yoh K, Goto K. EP08.02-113 Clinico-genomic Characteristics of Patients with Non-small Cell Lung Cancer Harboring EGFR Exon 20 Insertion Mutations. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.796] [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: 10/14/2022]
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5
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Borghaei H, Paz-Ares L, Johnson M, Champiat S, Owonikoko T, Lai V, Boyer M, Hummel HD, Govindan R, Steeghs N, Blackhall F, Reguart N, Dowlati A, Zhang Y, Sadraei NH, Goldrick A, Izumi H. OA12.05 Phase 1 Updated Exploration and First Expansion Data for DLL3-targeted T-cell Engager Tarlatamab in Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.062] [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: 10/14/2022]
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6
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Paz-Ares L, Owonikoko T, Johnson M, Govindan R, Izumi H, Lai V, Borghaei H, Boyer M, Boosman R, Hummel HD, Blackhall F, Dowlati A, Zhang Y, Mukherjee S, Sable B, Pati A, Shetty A, Sadraei NH, Champiat S. 48MO Phase I study of AMG 757, a delta-like ligand 3 (DLL3) targeting, half-life extended bispecific T-cell engager immuno-oncology therapy, in small cell lung cancer (SCLC). J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01890-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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7
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Eda M, Yamasaki T, Izumi H, Tomita N, Konno S, Konno M, Murakami H, Sato F. Cryptic species in a Vulnerable seabird: shorttailed albatross consists of two species. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The occurrence of cryptic species within a threatened taxon is rare, but where they do occur, understanding species boundaries is essential for planning an effective conservation strategy. The short-tailed albatross Phoebastria albatrus is a Vulnerable seabird that mainly breeds on Torishima and the Senkaku Islands in the western North Pacific. Although it has been tacitly regarded as a single management unit with 2 breeding sites, the species is known to comprise 2 genetically separated populations (Senkaku-type and Torishima-type). However, morphological examination of birds from both populations has not been conducted owing to the difficulty in accessing the Senkaku Islands. In this study, we examined the morphological differences between immigrants from the Senkaku Islands to Torishima (Senkaku-type) and native birds on Torishima (Torishima-type) and found significant differences in morphological characteristics between the 2 bird types. In general, Torishima-type birds were larger than Senkaku-type birds, whereas Senkaku-type birds had relatively longer beaks. Based on the morphological differences found in this study as well as genetic and ecological differences revealed in previous studies, we believe that Senkaku- and Torishima-type birds should be classified as different cryptic species. To the best of our knowledge, this is the first case of cryptic species being identified in a threatened avian species.
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Affiliation(s)
- M Eda
- Hokkaido University Museum, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - T Yamasaki
- Division of Natural History, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - H Izumi
- Hokkaido University Museum, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - N Tomita
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - S Konno
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - M Konno
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - H Murakami
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - F Sato
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
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8
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Ishigaki T, Asanuma T, Yagi N, Izumi H, Shimizu S, Fujisawa Y, Miyahira Y, Kushima R, Masuda K, Nakatani S. 2231Improvement in diagnostic accuracy of single-vessel coronary stenosis by the analysis of post-systolic shortening derived from non-stress speckle tracking echocardiography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.2231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Ishigaki
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - T Asanuma
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
| | - N Yagi
- Shiga University of Medical Science, Department of Cardiovascular Medicine, Otsu, Japan
| | - H Izumi
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - S Shimizu
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - Y Fujisawa
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - Y Miyahira
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - R Kushima
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - K Masuda
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
| | - S Nakatani
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
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9
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Lai YC, Ushio N, Rahman MM, Katanoda Y, Ogihara K, Naya Y, Moriyama A, Iwanaga T, Saitoh Y, Sogawa T, Sunaga T, Momoi Y, Izumi H, Miyoshi N, Endo Y, Fujiki M, Kawaguchi H, Miura N. Aberrant expression of microRNAs and the miR-1/MET pathway in canine hepatocellular carcinoma. Vet Comp Oncol 2018; 16:288-296. [DOI: 10.1111/vco.12379] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 11/16/2017] [Accepted: 11/30/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Y.-C. Lai
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - N. Ushio
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - M. M. Rahman
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - Y. Katanoda
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - K. Ogihara
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - Y. Naya
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - A. Moriyama
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - T. Iwanaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Saitoh
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sogawa
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sunaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Momoi
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Izumi
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - N. Miyoshi
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Endo
- Laboratory of Small Animal Internal Medicine, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - M. Fujiki
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Kawaguchi
- Department of Hygiene and Health Promotion Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - N. Miura
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
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10
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Sakamoto T, Yamane K, Tanaka N, Yanai M, Izumi H, Yamaguchi K, Takeda K, Makino H, Igishi T, Yamasaki A, Simizu E. P2.03-016 Clinical Utility of Liquid Biopsy for Detecting EGFR T790M Mutation Is Very Limited. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Deguchi T, Sato F, Eda M, Izumi H, Suzuki H, Suryan RM, Lance EW, Hasegawa H, Ozaki K. Translocation and hand-rearing result in short-tailed albatrosses returning to breed in the Ogasawara Islands 80 years after extirpation. Anim Conserv 2016. [DOI: 10.1111/acv.12322] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- T. Deguchi
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
| | - F. Sato
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
| | - M. Eda
- Hokkaido University Museum; Hokkaido University; Sapporo Japan
| | - H. Izumi
- Hokkaido University Museum; Hokkaido University; Sapporo Japan
| | - H. Suzuki
- Institute of Boninology; Ogasawara Japan
| | - R. M. Suryan
- Department of Fisheries and Wildlife; Hatfield Marine Science Center; Oregon State University; Newport OR USA
| | - E. W. Lance
- Endangered Species Branch; Anchorage Fish and Wildlife Field Office; Anchorage AK USA
| | - H. Hasegawa
- Department of Biology; Toho University; Funabashi Japan
| | - K. Ozaki
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
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12
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-114 Non-Hodgkin's lymphoma that diagnosed from gastrointestinal biopsy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.108] [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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13
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Natori K, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-113 Multiple neoplasms including hematological malignancies and esophageal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.107] [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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14
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-198 Multiple neoplasms consist of gastric cancer and hematological malignancy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.190] [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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Satoh T, Izumi H, Iwabuchi N, Odamaki T, Namba K, Abe F, Xiao JZ. Bifidobacterium breve prevents necrotising enterocolitis by suppressing inflammatory responses in a preterm rat model. Benef Microbes 2015; 7:75-82. [PMID: 26420070 DOI: 10.3920/bm2015.0035] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Necrotising enterocolitis (NEC) is associated with inflammatory responses and barrier dysfunction in the gut. In this study, we investigated the effect of Bifidobacterium breve M-16V on factors related to NEC development using an experimental rat model. Caesarean-sectioned rats were given formula milk with or without B. breve M-16V by oral gavage thrice daily, and experimental NEC was induced by exposing the rats to hypoxic conditions. Naturally delivered rats that were reared by their mother were used as healthy controls. The pathological score of NEC and the expression of molecules related to inflammatory responses and the barrier function were assessed in the ileum. B. breve M-16V reduced the pathological scores of NEC and resulted in some improvement in survivability. B. breve M-16V suppressed the increased expression of molecules related to inflammation and barrier function that resulted from NEC induction. B. breve M-16V normalised Toll-like receptor (TRL)4 expression and enhanced TLR2 expression. Our data suggest that B. breve M-16V prevents NEC development by modulating TLR expressions and suppressing inflammatory responses in a rat model.
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Affiliation(s)
- T Satoh
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - H Izumi
- 2 Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - N Iwabuchi
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - T Odamaki
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - K Namba
- 2 Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - F Abe
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - J Z Xiao
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
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Kazuhiko N, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-021: Hyponatremia in non-Hodgkin's lymphoma diffuse large B cell type of the elderly. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30124-8] [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: 11/28/2022]
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17
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Kazuhiko N, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-020: Syndrome of inappropriate secretion of antidiuretic hormone during induction therapy for lymphoma. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30123-6] [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: 11/27/2022]
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18
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Kazuhiko N, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-019: Malignant lymphoma more than 80 years old cases. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30122-4] [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: 10/23/2022]
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19
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Kuraishi Y, Arai K, Izumi H. P-126 The cases that were diagnosed malignant lymphoma from gastrointestinal tract of biopsy. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Natori K, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kato M, Kuraishi Y, Arai K, Izumi H. P-125 Study of multiple neoplasms consist of hematological malignancies and gastrointestinal cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.125] [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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21
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Kato M, Arai K, Izumi H. P-251 Diagnosis of malignant lymphoma during at the colorectal cancer surgery. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.248] [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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22
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Miyazawa K, Izumi H, Watanabe-Nakayama T, Asakawa H, Fukuma T. Fabrication of electron beam deposited tip for atomic-scale atomic force microscopy in liquid. Nanotechnology 2015; 26:105707. [PMID: 25697199 DOI: 10.1088/0957-4484/26/10/105707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, possibilities of improving operation speed and force sensitivity in atomic-scale atomic force microscopy (AFM) in liquid using a small cantilever with an electron beam deposited (EBD) tip have been intensively explored. However, the structure and properties of an EBD tip suitable for such an application have not been well-understood and hence its fabrication process has not been established. In this study, we perform atomic-scale AFM measurements with a small cantilever and clarify two major problems: contaminations from a cantilever and tip surface, and insufficient mechanical strength of an EBD tip having a high aspect ratio. To solve these problems, here we propose a fabrication process of an EBD tip, where we attach a 2 μm silica bead at the cantilever end and fabricate a 500-700 nm EBD tip on the bead. The bead height ensures sufficient cantilever-sample distance and enables to suppress long-range interaction between them even with a short EBD tip having high mechanical strength. After the tip fabrication, we coat the whole cantilever and tip surface with Si (30 nm) to prevent the generation of contamination. We perform atomic-scale AFM imaging and hydration force measurements at a mica-water interface using the fabricated tip and demonstrate its applicability to such an atomic-scale application. With a repeated use of the proposed process, we can reuse a small cantilever for atomic-scale measurements for several times. Therefore, the proposed method solves the two major problems and enables the practical use of a small cantilever in atomic-scale studies on various solid-liquid interfacial phenomena.
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Affiliation(s)
- K Miyazawa
- Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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23
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Wu Y, Wang KY, Li Z, Liu YP, Izumi H, Yamada S, Uramoto H, Nakayama Y, Ito K, Kohno K. Y-box binding protein 1 expression in gastric cancer subtypes and association with cancer neovasculature. Clin Transl Oncol 2014; 17:152-9. [DOI: 10.1007/s12094-014-1208-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 07/15/2014] [Indexed: 12/18/2022]
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24
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Kodani M, Igishi T, Sakamoto T, Touge H, Izumi H, Ito S, Kurai J, Yamaguchi K, Nakamoto M, Shimizu E. Rechallenge with EGFR-TKI after a Drug Holiday, Retrospective Study in Single Institution. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Therapy in malignant lymphoma in 80 years or over. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.026] [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]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Multiple neoplasms including hematological malignancies in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.324] [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: 11/27/2022]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Study of malignant lymphoma diagnosed by biopsy from head and neck area in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.514] [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]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Leukemia in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Chemotherapy our clinic in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kitada S, Yamada S, Kuma A, Ouchi S, Tasaki T, Nabeshima A, Noguchi H, Wang KY, Shimajiri S, Nakano R, Izumi H, Kohno K, Matsumoto T, Sasaguri Y. Polypeptide N-acetylgalactosaminyl transferase 3 independently predicts high-grade tumours and poor prognosis in patients with renal cell carcinomas. Br J Cancer 2013; 109:472-81. [PMID: 23799843 PMCID: PMC3721383 DOI: 10.1038/bjc.2013.331] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 05/29/2013] [Accepted: 06/04/2013] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND The polypeptide N-acetylgalactosaminyltransferases (GalNAc-Ts) family of enzymes regulates the initial steps of mucin-type O-glycosylation. N-acetylgalactosaminyltransferases might show novel patterns of GalNAc-T glycosylation on tumour-derived proteins, which could influence cancer biology, but its mechanisms are unclear. We investigated the association of GalNAc-T3 and -T6 expressions with clinicopathological features and prognoses of patients with renal cell carcinomas (RCCs). METHODS Expressions of GalNAc-T3/6 and cell-adhesion molecules were analysed immunohistochemically in 254 paraffin-embedded tumour samples of patients with RCC. RESULTS Of 138 GalNAc-T3+ cases, 46 revealed significant co-expression with GalNAc-T6. N-acetylgalactosaminyltransferases-3+ expression showed a close relationship to poor clinical performance and large tumour size, or pathologically high Fuhrman's grading, and presence of vascular invasion and necrosis. The GalNAc-T3-positivity potentially suppressed adhesive effects with a significantly low β-catenin expression. Univariate and multivariate analyses showed the GalNAc-T3+ group, but not the GalNAc-T6+ group, to have significantly worse survival rates. CONCLUSION N-acetylgalactosaminyltransferases-3 expression independently predicts high-grade tumour and poor prognosis in patients with RCC, and may offer a therapeutic target against RCC.
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Affiliation(s)
- S Kitada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Urology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Yamada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - A Kuma
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Ouchi
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - T Tasaki
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - A Nabeshima
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - H Noguchi
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - K-Y Wang
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Bio-information Research Center, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Shimajiri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - R Nakano
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - H Izumi
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - K Kohno
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - T Matsumoto
- Department of Urology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - Y Sasaguri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
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Izumi H, Kosaka N, Shimizu T, Sekine K, Ochiya T, Takase M. Bovine milk contains microRNA and messenger RNA that are stable under degradative conditions. J Dairy Sci 2013; 95:4831-4841. [PMID: 22916887 DOI: 10.3168/jds.2012-5489] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 05/13/2012] [Indexed: 01/18/2023]
Abstract
We previously reported that microRNA (miRNA) is present in human breast milk. Recently, other groups have reported that bovine milk also contains miRNA; however, these reports are few. We therefore investigated bovine milk miRNA using microarray and quantitative PCR analyses to identify the differences between colostrum and mature milk. The RNA concentration in a colostrum whey fraction was higher than that in a mature milk whey fraction. In total, 102 miRNA were detected in bovine milk by microarray analysis (100 in colostrum and 53 in mature milk; 51 were common to both). Among these miRNA, we selected several immune- and development-related miRNA, including miR-15b, miR-27b, miR-34a, miR-106b, miR-130a, miR-155, and miR-223. These miRNA were detected in bovine milk by quantitative PCR, and each of these miRNA was significantly more highly expressed in colostrum than in mature milk. We also confirmed the presence of some mRNA in bovine milk. Nevertheless, synthesized miRNA spiked in the raw milk whey were degraded, and naturally existing miRNA and mRNA in raw milk were resistant to acidic conditions and RNase treatment. The RNA molecules in milk were stable. We also detected miRNA and mRNA in infant formulas purchased from Japanese markets. It is still unknown whether milk-derived RNA molecules play biological roles in infants; however, if milk-derived RNA do show functions in infants, our data will help guide future studies.
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Affiliation(s)
- H Izumi
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan.
| | - N Kosaka
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Chuo-ku, Tokyo 104-0045, Japan
| | - T Shimizu
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
| | - K Sekine
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
| | - T Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Chuo-ku, Tokyo 104-0045, Japan
| | - M Takase
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
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Osada K, Hanawa M, Tsunoda K, Izumi H. Evaluation of the Masking of Dimethyl Sulfide Odors by Citronellal, Limonene and Citral through the Use of Trained Odor Sensor Mice. Chem Senses 2012; 38:57-65. [DOI: 10.1093/chemse/bjs077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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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Natori K, Nagase D, Fujimoto Y, Shibuya A, Ishihara S, Kuraishi Y, Izumi H. Study of the elderly person multiple neoplasms consisting of gastric cancer and hematological malignancy. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.236] [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: 10/27/2022]
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Natori K, Ishihara S, Nagase D, Shibuya A, Fujimoto Y, Kuraishi Y, Izumi H. The elderly person who was diagnosed malignant lymphoma that died early period experience of 11 cases. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.243] [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: 10/27/2022]
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35
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Natori K, Nagase D, Ishihara S, Izumi H. Examination about chemotherapies in the elderly person malignant lymphoma and the oral surgery treatment. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Natori K, Nagase D, Ishihara S, Shibuya A, Kuraishi Y, Fujimoto Y, Kuraishi Y, Izumi H. Infiltration of gastric mucosa about untreated malignant lymphoma in elderly. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.237] [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: 10/27/2022]
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37
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Kagami S, Kurita T, Kawagoe T, Toki N, Matsuura Y, Hachisuga T, Matsuyama A, Hashimoto H, Izumi H, Kohno K. Prognostic significance of BAF57 expression in patients with endometrial carcinoma. Histol Histopathol 2012; 27:593-9. [PMID: 22419023 DOI: 10.14670/hh-27.593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was conducted to elucidate the prognostic significance of BAF57 in patients with endometrial carcinoma. We investigated the relationship between the immunohistochemical expression of BAF57 and various clinicopathological variables in 111 endometrial carcinomas. Both univariate and multivariate regression analyses were performed. The correlations between the BAF57 expression and the other variables including estrogen receptor (ER) and p53 were examined. The high nuclear BAF57 expression was detected in 42 (37.8%) endometrial carcinomas, and 69 (62.2%) endometrial carcinomas were defined as having low nuclear BAF57 expression. The BAF57 expression was significantly associated with the surgical stage, grade of the tumor, myometrial invasion, lympho-vascular space invasion (LVSI) and lymph node metastasis. The 10-year overall survival rates of patients with low and high BAF57 expression were 96.9% and 58.2%, respectively (p<0.001). A multivariate analysis identified BAF57 expression as an independent prognostic factor. The BAF57 expression was significantly correlated with p53 expression (r=0.312, P=0.001), but was not correlated with ER expression (r= -0.141, P=0.14). The high BAF57 expression is an independent marker of poor prognosis of the patients in endometrial carcinomas. The inhibition of BAF57 activity may be one of the candidates for endometrial cancer therapy, especially therapy for aggressive tumors showing overexpression of p53.
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Affiliation(s)
- S Kagami
- Departmentsof Obstetrics, University of Occupational and Environmental Health School of Medicine, Yahatanishi-ku, Kitakyushu, Japan
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Ito T, Kamijo S, Izumi H, Kohno K, Ito KI. P4-01-15: Alteration of Y-box Binding Protein-1 Expression Modifies the Response to Endocrine Therapy in Estrogen Receptor Positive Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p4-01-15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Y-box binding protein-1 (YB-1) plays an important role in tumor progression and drug resistance. This study examined whether YB-1 is involved in the alteration of response to endocrine therapy in ER-positive breast cancer cells. MCF7 cells that stably expressed YB-1 (MCF7-YB-1) and vector control cells (MCF7-vector) were established. These cells were used to analyze the expression of the factors related to the ER and growth factor receptor signaling pathways, response to the antiestrogens (tamoxifen and fulvestrant), and estrogen responsive element (ERE) activity. The effect of knocking down endogenous YB-1 expression was tested in wild-type MCF7 cells. In addition, the expression of the YB-1 and the factors related to the ER and growth factor receptor signaling pathways were evaluated in the clinical breast cancers treated with preoperative chemotherapy. The expression of HER2, AIB1, p-Erk and c-Myc were increased in the MCF7-YB-1 cells. In contrast, knocking down of YB-1 decreased the expression of these factors, but increased the expression of ERα in the wild-type MCF7 cells. Furthermore, sensitivity to antiestrogens was decreased in the MCF7-YB-1 in comparison to those in the MCF7-vector cells. In the MCF7-YB-1 cells, the expression levels of p-Erk and c-Myc were continuously upregulated when the cells were treated either with tamoxifen or fulvestrant. The ERE activity was decreased in the MCF7-YB-1 cells in comparison to the MCF7-vector cells, and the ERE activity of the MCF7-YB-1 cells was inhibited by fulvestrant at a lower concentration than that which inhibited the ERE activity of the MCF7-vector cells. In the ER-positive clinical breast cancers treated with preoperative chemotherapy, significantly more of the specimens that showed increased or positive nuclear YB-1 expression after the chemotherapy were positive for HER2 expression. These data suggest that alteration of YB-1 may modify the crosstalk between the ER pathway and HER2 pathway in ER-positive breast cancer cells, and consequently may alter the response to endocrine therapy in these cells.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P4-01-15.
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Affiliation(s)
- T Ito
- 1Shinshu University School of Medicine, Matsumoto, Nagano, Japan; University of Occupational & Environmental Health, Kitakyushu, Fukuoka, Japan
| | - S Kamijo
- 1Shinshu University School of Medicine, Matsumoto, Nagano, Japan; University of Occupational & Environmental Health, Kitakyushu, Fukuoka, Japan
| | - H Izumi
- 1Shinshu University School of Medicine, Matsumoto, Nagano, Japan; University of Occupational & Environmental Health, Kitakyushu, Fukuoka, Japan
| | - K Kohno
- 1Shinshu University School of Medicine, Matsumoto, Nagano, Japan; University of Occupational & Environmental Health, Kitakyushu, Fukuoka, Japan
| | - K-I Ito
- 1Shinshu University School of Medicine, Matsumoto, Nagano, Japan; University of Occupational & Environmental Health, Kitakyushu, Fukuoka, Japan
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Li Z, Yamada S, Inenaga S, Imamura T, Wu Y, Wang KY, Shimajiri S, Nakano R, Izumi H, Kohno K, Sasaguri Y. Polypeptide N-acetylgalactosaminyltransferase 6 expression in pancreatic cancer is an independent prognostic factor indicating better overall survival. Br J Cancer 2011; 104:1882-9. [PMID: 21587259 PMCID: PMC3111199 DOI: 10.1038/bjc.2011.166] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 04/14/2011] [Accepted: 04/17/2011] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The family of polypeptide N-acetylgalactosaminyltransferases (GalNAc-Ts) is responsible for the altered glycosylation in cancer. The purpose of our study was to investigate the clinical significance of two isoforms, GalNAc-T6 and -T3, and their correlation with the prognosis of pancreatic cancer. METHODS Immunohistochemistry was used to analyse GalNAc-T6 and -T3 expressions in 70 clinicopathologically characterised pancreatic cancer cases. RESULTS Positive expressions of GalNAc-T6 and -T3 were immunohistochemically identified in 51% (36 of 70) and in 77% (54 of 70) of patients, respectively. A close relationship was noted between GalNAc-T6 positive expression and pathological well/moderate differentiated type (P=0.001), small tumour size (P=0.044), absence of vascular invasion (P=0.009), and low stage of the American Joint Committee on Cancer systems (P=0.043). The expression of GalNAc-T3 significantly correlated with good differentiation (P=0.001), but not with other clinicopathologic features. Furthermore, univariate and multivariate analyses revealed that GalNAc-T6 expression was an independent prognosis indicator for the disease, whereas GalNAc-T3 expression had no impact on clinical outcome, even though 33 of 36 GalNAc-T6-positive cases also had a positive expression of GalNAc-T3 (P=0.001, r=0.356). CONCLUSION Both GalNAc-T6 and -T3 expressions correlated significantly with tumour differentiation, whereas only GalNAc-T6 expression predicted prognosis in pancreatic cancer.
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Affiliation(s)
- Z Li
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - S Yamada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - S Inenaga
- Department of Pathology, Kyushu Kosei-Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - T Imamura
- Department of Surgery, Tobata Kyoritsu Hospital, Kitakyushu 804-0093, Japan
| | - Y Wu
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - K-Y Wang
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - S Shimajiri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
- Department of Pathology, Kyushu Kosei-Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - R Nakano
- Department of Pathology, Kyushu Kosei-Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - H Izumi
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - K Kohno
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - Y Sasaguri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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Tanaka A, Mishina T, Izumi H, Hommura F, Akie K, Ogura S, Yamamoto H. [Direct instillation of the fibrin glue into the ruptured bulla is an effective treatment for uncontrolled pneumothorax occurred from severe emphysematous bullae]. Kyobu Geka 2011; 64:286-290. [PMID: 21491722] [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: 05/30/2023]
Abstract
From May 2005 to October 2010. 9 patients with severe emphysematous bullae suffered from uncontrolled pneumothorax had been successfully treated by a new surgical method in our hospital. By using direct instillation of fibrin glue into the ruptured bulla following ligation of the ruptured bulla hole, 8 of 9 patients revealed no recurrence of new rupture and pneumothorax. Although the ligation of ruptured bulla hole tended to increase tension of surface of the bulla around the ligation and caused new rupture of the bulla, the fully instilled glue reduced intra air pressure of the ligated bulla and prevented new rupture. Additionally, the direct instillation of the glue immediately stopped the air leakage by itself. This direct instillation method of the glue encouraged us to challenge the surgery for the patients suffered from uncontrolled pneumothorax with severe emphysematous bullae.
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Affiliation(s)
- A Tanaka
- Department of Thoracic Surgery, Sapporo City General Hospital, Sapporo, Japan
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Shimizu C, Nozawa K, Yamamoto S, Kakimoto M, Takahashi Y, Ito A, Izumi H, Fujiwara Y. A prospective study of the appearance-related side effects (ARSE) in 638 Japanese patients receiving cancer chemotherapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e19516] [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: 11/20/2022] Open
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Fujita T, Nagura N, Koshikawa K, Nishimura H, Ito K, Izumi H, Kohno K, Fujimori M. Increased Nuclear Localization of Transcription Factor Y-Box Binding Protein 1 Accompanied by Up-Regulation of P-Glycoprotein in Breast Cancer Pretreated with Paclitaxel. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-1141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: The Y-box binding protein 1 (YB-1) regulates expression of P-glycoprotein (P-gp) encoded by the MDR1 gene. There have been no previous studies regarding the involvement of YB-1 in the development of resistance to paclitaxel. The present study was performed to examine how paclitaxel affects the localization and expression of YB-1 in breast cancer.Experimental Design: We evaluated the expression and localization of YB-1 and P-gp in breast cancer tissues obtained from 27 patients before and after treatment with paclitaxel. The effect of paclitaxel on localization of cellular YB-1 was examined by using GFP-YB-1. Interaction of YB-1 with the Y-box motif of the MDR1 promoters was studied by EMSA. The effects of paclitaxel on MDR1 promoter activity were examined by luciferase assay.Results: Of 27 breast cancer tissues treated with paclitaxel, nine (33%) showed translocation of YB-1 from the cytoplasm to the nucleus together with increased expression of P-gp during the course of treatment. Twelve breast cancer tissues (44%) showed neither translocation of YB-1 nor increased expression of P-gp. Nuclear translocation of YB-1 was correlated significantly with increased expression of P-gp (P=0.0037). Confocal analysis indicated that paclitaxel induced nuclear translocation of green fluorescent fused YB-1 in MCF7 cells. Furthermore, binding of YB-1 to the Y-box of MDR1 promoter was increased in response to treatment with paclitaxel. In addition, MDR1 promoter activity was significantly up-regulated by paclitaxel in MCF7 cells (p< 0.001).Conclusions: The results of the present study suggested that YB-1 may be involved in the development of resistance to paclitaxel in breast cancer.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 1141.
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Affiliation(s)
- T. Fujita
- 1Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - N. Nagura
- 1Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - K. Koshikawa
- 1Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - H. Nishimura
- 1Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - K. Ito
- 2Shinshu University School of Medicine, Nagano, Japan
| | - H. Izumi
- 3University of Occupational and Environmental Health, Fukuoka, Japan
| | - K. Kohno
- 3University of Occupational and Environmental Health, Fukuoka, Japan
| | - M. Fujimori
- 1Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
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Osada K, Kashiwayanagi M, Izumi H. Profiles of Volatiles in Male Rat Urine: The Effect of Puberty on the Female Attraction. Chem Senses 2009; 34:713-21. [DOI: 10.1093/chemse/bjp058] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [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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Izumi H, Matsumoto Y, Ikeuchi T, Saya H, Kajii T, Matsuura S. BubR1 localizes to centrosomes and suppresses centrosome amplification via regulating Plk1 activity in interphase cells. Oncogene 2009; 28:2806-20. [PMID: 19503101 DOI: 10.1038/onc.2009.141] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [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: 09/05/2008] [Revised: 04/17/2009] [Accepted: 04/28/2009] [Indexed: 12/28/2022]
Abstract
BubR1 is a critical component of the mitotic checkpoint that delays the onset of anaphase until all chromosomes have established bipolar attachment to the microtubules. We previously reported that mutations of the BUB1B gene (encoding BubR1) caused premature chromatid separation (PCS) syndrome, a condition characterized by constitutional aneuploidy and a high risk of childhood cancer. We here report that the cells from PCS syndrome patients have loss of regulation of the centrosome duplication machinery, resulting in centrosome amplification and multipolar mitosis. PCS syndrome cells show increased activity of Polo-like kinase 1 (Plk1), whose knockdown suppresses centrosome amplification. BubR1 localizes to centrosomes, physically interacts with Plk1 and inhibits Plk1 phosphorylation and its kinase activity during interphase. These results unravel a crucial role of BubR1 in preventing centrosome reduplication through negative regulation of Plk1 in interphase cells.
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Affiliation(s)
- H Izumi
- Department of Radiation Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Japan
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Yoshida Y, Hasegawa J, Nezu R, Kim Y, Hirota M, Yoshikawa K, Kawano K, Izumi H, Kohno K. Clinical usefulness of mtTFA expression as a predictive marker in colorectal cancer patients treated with FOLFOX. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4059 Background: We previously reported that mitochondrial transcription factor A (mtTFA; also designated Tfam) preferentially recognizes cisplatin-damaged DNA via physical interaction with p53 and is upregulated by the treatment with cisplatin and 5-FU (Yoshida et al, Cancer Res. 2003). The aim of this study was to evaluate whether expression of mtTFA predicts clinical outcome in patients with metastatic colorectal cancer treated with modified FOLFOX6 (mFOLFOX6). Methods: From January 2006 to April 2008, 59 patients who had metastatic lesions from colorectal cancer treated with mFOLFOX6 at the Osaka Rosai Hospital were included in this study. They consisted of 25 women (42.4%) and 34 men (57.6%), with a median age of 62 years (29–84). Patients were treated with oxaliplatin 85mg/m2 plus leucovorin 200mg/m2 as a 2-h infusion at day 1, followed by 5-FU bolus 400mg/m2 and 46-h continuous infusion of 2400 mg/m2. Treatment was repeated in 2-week intervals for at least 4 cycles. The expressions of mtTFA and p53 of resected primary tumors were examined by immunohistochemistry. Results: Among 59 patients, one complete response and 32 partial responses were observed (response rate, 55.9%) . The positive rates was 44.1% (26/59; CR 1, PR 7, SD/PD 18) for mtTFA and 59.3% (35/59; CR 1, PR 19, SD/PD 15) for p53, respectively. Strong expression of mtTFA was detected in 8 of 33 CR/PR (24.2%) and in 18 of 26 SD/PD (69.2%), indicating that the expression of mtTFA correlated significantly with response to chemotherapy (P<0.01). On the other hand, there was no significant correlation between response to chemotherapy and p53 expression (P=0.82). mtTFA expression was significantly associated with overall survival (P=0.036) and progression free survival (P=0.037). Multivariate analysis revealed that mtTFA expression significantly impacted on OS (Hazard ratio 2.10, P=0.036). Conclusions: Immunohistochemical study of mtTFA may be useful in prediction of the clinical outcome of metastatic colorectal cancer patients treated with FOLFOX. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Yoshida
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - J. Hasegawa
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - R. Nezu
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - Y. Kim
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - M. Hirota
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - K. Yoshikawa
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - K. Kawano
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - H. Izumi
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
| | - K. Kohno
- Japan Labour Health and Welfare Organization Osaka Rosai Hospital, Sakai, Japan; University of Occupational & Environmental Health, Kitakyushu, Japan
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Yoshida Y, Hasegawa J, Nezu R, Kim Y, Hirota M, Yoshikawa K, Ohashi H, Kawano K, Izumi H, Kohno K. Prediction of response to FOLFOX in metastatic colorectal cancer by mtTFA. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15079] [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: 11/20/2022] Open
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Saito T, Hama S, Izumi H, Yamasaki F, Kajiwara Y, Matsuura S, Morishima K, Hidaka T, Shrestha P, Sugiyama K, Kurisu K. Centrosome amplification induced by survivin suppression enhances both chromosome instability and radiosensitivity in glioma cells. Br J Cancer 2008; 98:345-55. [PMID: 18195712 PMCID: PMC2361434 DOI: 10.1038/sj.bjc.6604160] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [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] [Indexed: 12/24/2022] Open
Abstract
Glioblastoma is characterised by invasive growth and a high degree of radioresistance. Survivin, a regulator of chromosome segregation, is highly expressed and known to induce radioresistance in human gliomas. In this study, we examined the effect of survivin suppression on radiosensitivity in malignant glioma cells, while focusing on centrosome aberration and chromosome instability (CIN). We suppressed survivin by small interfering RNA transfection, and examined the radiosensitivity using a clonogenic assay and a trypan blue exclusion assay in U251MG (p53 mutant) and D54MG (p53 wild type) cells. To assess the CIN status, we determined the number of centrosomes using an immunofluorescence analysis, and the centromeric copy number by fluorescence in situ hybridisation. As a result, the radiosensitisation differed regarding the p53 status as U251MG cells quickly developed extreme centrosome amplification (=CIN) and enhanced the radiosensitivity, while centrosome amplification and radiosensitivity increased more gradually in D54MG cells. TUNEL assay showed that survivin inhibition did not lead to apoptosis after irradiation. This cell death was accompanied by an increased degree of aneuploidy, suggesting mitotic cell death. Therefore, survivin inhibition may be an attractive therapeutic target to overcome the radioresistance while, in addition, proper attention to CIN (centrosome number) is considered important for improving radiosensitivity in human glioma.
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Affiliation(s)
- T Saito
- Department of Neurosurgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
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Watanabe H, Ishii H, Niioka T, Yamamuro M, Izumi H. Occurrence of parasympathetic vasodilator fibers in the lower lip of the guinea-pig. J Comp Physiol B 2007; 178:297-305. [PMID: 18030480 DOI: 10.1007/s00360-007-0222-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 10/30/2007] [Accepted: 11/06/2007] [Indexed: 11/30/2022]
Abstract
The present study was designed to examine whether there are parasympathetic vasodilator fibers in the lower lip of the guinea-pig. Electrical stimulation of the central cut end of the lingual nerve of guinea-pigs evoked intensity- and frequency-dependent decreases in lower lip blood flow and systemic arterial blood pressure (SABP). Pretreatment with guanethidine, a postganglionic sympathetic nerve blocker and antihypertensive drug (30 mg kg(-1), s.c., 24 h prior to experiments), reduced the magnitude of the decrease in SABP while the intensity- and frequency-dependent increases of the lip blood flow occurred by the lingual nerve stimulation only on the side ipsilateral to stimulation. Increases in the lip blood flow evoked by lingual nerve stimulation in guanethidine pretreated guinea-pigs were reduced by hexamethonium (an autonomic ganglion cholinergic blocker) in a dose-dependent manner. When fluoro-gold (a retrograde neural tracer) was injected into the lower lip, labeled neurons were observed in the ipsilateral otic ganglion. The present study indicates the presence of parasympathetic vasodilator fibers originating from the otic parasympathetic ganglion in the guinea-pig lower lip, similar to those reported previously in rats, cats, rabbits and humans.
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Affiliation(s)
- H Watanabe
- Department of Pain Control, Tohoku University, Graduate School of Medicine, Sendai, 980-8574, Japan
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