1
|
Morita T, Sasaki T, Koizumi Y, Fukushima H, Shimbashi W, Mitani H. Favourable swallowing outcomes after subtotal glossectomy with laryngeal suspension. Int J Oral Maxillofac Surg 2024; 53:191-198. [PMID: 37516548 DOI: 10.1016/j.ijom.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: 01/05/2023] [Revised: 07/07/2023] [Accepted: 07/13/2023] [Indexed: 07/31/2023]
Abstract
Subtotal or total glossectomy for advanced tongue cancer has an adverse impact on swallowing. The purpose of this retrospective study was to analyse postoperative swallowing outcomes and to determine the ideal reconstruction method in these patients. The clinical and swallowing data of patients with tongue cancer who underwent subtotal glossectomy at the study institution between 2005 and 2019 were reviewed retrospectively. Data were available for 101 patients. The most common reconstruction method was a free rectus abdominis musculocutaneous flap (69 cases). The postoperative feeding tube dependency rate was 11.1% at discharge and 9.4% at 1 year. During the study period, laryngeal suspension and/or a cricopharyngeal myotomy was performed in 39 patients (38.6%), with 25 of these operations performed after 2017. Patients treated in 2017-2019 were significantly more able to take thin liquid (P < 0.001) and lost less weight (P = 0.015) compared to those treated in 2005-2016. Multivariate analysis of 61 patients who did not undergo laryngeal suspension and/or cricopharyngeal myotomy showed significant feeding tube dependency in those aged 65 years and older (P = 0.004). Thin liquid intake was significantly improved after subtotal glossectomy with laryngeal suspension, which led to better postoperative swallowing and improved quality of life.
Collapse
Affiliation(s)
- T Morita
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan.
| | - T Sasaki
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Y Koizumi
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - H Fukushima
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - W Shimbashi
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - H Mitani
- Department of Head and Neck, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| |
Collapse
|
2
|
Rimini M, Rimassa L, Ueshima K, Burgio V, Shigeo S, Tada T, Suda G, Yoo C, Cheon J, Pinato DJ, Lonardi S, Scartozzi M, Iavarone M, Di Costanzo GG, Marra F, Soldà C, Tamburini E, Piscaglia F, Masi G, Cabibbo G, Foschi FG, Silletta M, Pressiani T, Nishida N, Iwamoto H, Sakamoto N, Ryoo BY, Chon HJ, Claudia F, Niizeki T, Sho T, Kang B, D'Alessio A, Kumada T, Hiraoka A, Hirooka M, Kariyama K, Tani J, Atsukawa M, Takaguchi K, Itobayashi E, Fukunishi S, Tsuji K, Ishikawa T, Tajiri K, Ochi H, Yasuda S, Toyoda H, Ogawa C, Nishimur T, Hatanaka T, Kakizaki S, Shimada N, Kawata K, Tanaka T, Ohama H, Nouso K, Morishita A, Tsutsui A, Nagano T, Itokawa N, Okubo T, Arai T, Imai M, Naganuma A, Koizumi Y, Nakamura S, Joko K, Iijima H, Hiasa Y, Pedica F, De Cobelli F, Ratti F, Aldrighetti L, Kudo M, Cascinu S, Casadei-Gardini A. Atezolizumab plus bevacizumab versus lenvatinib or sorafenib in non-viral unresectable hepatocellular carcinoma: an international propensity score matching analysis. ESMO Open 2022; 7:100591. [PMID: 36208496 PMCID: PMC9808460 DOI: 10.1016/j.esmoop.2022.100591] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [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: 07/13/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND A growing body of evidence suggests that non-viral hepatocellular carcinoma (HCC) might benefit less from immunotherapy. MATERIALS AND METHODS We carried out a retrospective analysis of prospectively collected data from consecutive patients with non-viral advanced HCC, treated with atezolizumab plus bevacizumab, lenvatinib, or sorafenib, in 36 centers in 4 countries (Italy, Japan, Republic of Korea, and UK). The primary endpoint was overall survival (OS) with atezolizumab plus bevacizumab versus lenvatinib. Secondary endpoints were progression-free survival (PFS) with atezolizumab plus bevacizumab versus lenvatinib, and OS and PFS with atezolizumab plus bevacizumab versus sorafenib. For the primary and secondary endpoints, we carried out the analysis on the whole population first, and then we divided the cohort into two groups: non-alcoholic fatty liver disease (NAFLD)/non-alcoholic steatohepatitis (NASH) population and non-NAFLD/NASH population. RESULTS One hundred and ninety patients received atezolizumab plus bevacizumab, 569 patients received lenvatinib, and 210 patients received sorafenib. In the whole population, multivariate analysis showed that treatment with lenvatinib was associated with a longer OS [hazard ratio (HR) 0.65; 95% confidence interval (CI) 0.44-0.95; P = 0.0268] and PFS (HR 0.67; 95% CI 0.51-0.86; P = 0.002) compared to atezolizumab plus bevacizumab. In the NAFLD/NASH population, multivariate analysis confirmed that lenvatinib treatment was associated with a longer OS (HR 0.46; 95% CI 0.26-0.84; P = 0.0110) and PFS (HR 0.55; 95% CI 0.38-0.82; P = 0.031) compared to atezolizumab plus bevacizumab. In the subgroup of non-NAFLD/NASH patients, no difference in OS or PFS was observed between patients treated with lenvatinib and those treated with atezolizumab plus bevacizumab. All these results were confirmed following propensity score matching analysis. By comparing patients receiving atezolizumab plus bevacizumab versus sorafenib, no statistically significant difference in survival was observed. CONCLUSIONS The present analysis conducted on a large number of advanced non-viral HCC patients showed for the first time that treatment with lenvatinib is associated with a significant survival benefit compared to atezolizumab plus bevacizumab, in particular in patients with NAFLD/NASH-related HCC.
Collapse
Affiliation(s)
- M Rimini
- IRCCS San Raffaele Scientific Institute Hospital, Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - L Rimassa
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; Medical Oncology and Hematology Unit, Humanitas Cancer Center, IRCCS Humanitas Research Hospital, Milan, Italy
| | - K Ueshima
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - V Burgio
- IRCCS San Raffaele Scientific Institute Hospital, Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - S Shigeo
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - T Tada
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - G Suda
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - C Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Cheon
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - D J Pinato
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - S Lonardi
- Oncology Unit 3, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - M Scartozzi
- Medical Oncology, University and University Hospital of Cagliari, Cagliari, Italy
| | - M Iavarone
- Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
| | | | - F Marra
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Firenze, Italy
| | - C Soldà
- Oncology Unit 1, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - E Tamburini
- Department of Oncology and Palliative Care, Cardinale Hospital, Naples, Italy
| | - F Piscaglia
- Division of Internal Medicine, Hepatobiliary and Immunoallergic Disease, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - G Masi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy; Unit of Medical Oncology 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - G Cabibbo
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
| | - F G Foschi
- Internal Medicine, Infermi Hospital, Faenza (AUSL ROMAGNA), Ravenna, Italy
| | - M Silletta
- Division of Medical Oncology, Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - T Pressiani
- Medical Oncology and Hematology Unit, Humanitas Cancer Center, IRCCS Humanitas Research Hospital, Milan, Italy
| | - N Nishida
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - H Iwamoto
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - B-Y Ryoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H J Chon
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - F Claudia
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - T Niizeki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - T Sho
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - B Kang
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - A D'Alessio
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - T Kumada
- Department of Nursing, Gifu Kyoritsu University, Ogaki, Japan
| | - A Hiraoka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - M Hirooka
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - K Kariyama
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - J Tani
- Department of Gastroenterology and Hepatology, Kagawa University, Kagawa, Japan
| | - M Atsukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - K Takaguchi
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - E Itobayashi
- Department of Gastroenterology, Asahi General Hospital, Asahi, Japan
| | - S Fukunishi
- Premier Departmental Research of Medicine, Osaka Medical and Pharmaceutical University, Shinya Fukunishi, Osaka, Japan
| | - K Tsuji
- Center of Gastroenterology, Teine Keijinkai Hospital, Sapporo, Japan
| | - T Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Tajiri
- Department of Gastroenterology, Toyama University Hospital, Toyama, Japan
| | - H Ochi
- Hepato-biliary Center, Japanese Red Cross Matsuyama Hospital, Matsuyama, Japan
| | - S Yasuda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - H Toyoda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - C Ogawa
- Department of Gastroenterology, Japanese Red Cross Takamatsu Hospital, Takamatsu, Japan
| | - T Nishimur
- Department of Internal medicine, Division of Gastroenterology and Hepatology, Hyogo College of Medicine, Nishinomiya, Japan
| | - T Hatanaka
- Department of Gastroenterology, Gunma Saiseikai Maebashi Hospital, Maebashi, Japan
| | - S Kakizaki
- Department of Clinical Research, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - N Shimada
- Division of Gastroenterology and Hepatology, Otakanomori Hospital, Kashiwa, Japan
| | - K Kawata
- Department of Hepatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - T Tanaka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - H Ohama
- Premier Departmental Research of Medicine, Osaka Medical and Pharmaceutical University, Shinya Fukunishi, Osaka, Japan
| | - K Nouso
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - A Morishita
- Department of Gastroenterology and Hepatology, Kagawa University, Kagawa, Japan
| | - A Tsutsui
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Nagano
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - N Itokawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Okubo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Arai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Imai
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - A Naganuma
- Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - Y Koizumi
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - S Nakamura
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - K Joko
- Hepato-biliary Center, Japanese Red Cross Matsuyama Hospital, Matsuyama, Japan
| | - H Iijima
- Department of Internal medicine, Division of Gastroenterology and Hepatology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Y Hiasa
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - F Pedica
- Department of Experimental Oncology, Pathology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - F De Cobelli
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - F Ratti
- Hepatobiliary Surgery Division, Liver Center, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - L Aldrighetti
- Hepatobiliary Surgery Division, Liver Center, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - M Kudo
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - S Cascinu
- Department of Oncology, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - A Casadei-Gardini
- Department of Oncology, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy.
| |
Collapse
|
3
|
Rimini M, Kudo M, Tada T, Shigeo S, Kang W, Suda G, Jefremow A, Burgio V, Iavarone M, Tortora R, Marra F, Lonardi S, Tamburini E, Piscaglia F, Masi G, Cabibbo G, Foschi FG, Silletta M, Kumada T, Iwamoto H, Aoki T, Goh MJ, Sakamoto N, Siebler J, Hiraoka A, Niizeki T, Ueshima K, Sho T, Atsukawa M, Hirooka M, Tsuji K, Ishikawa T, Takaguchi K, Kariyama K, Itobayashi E, Tajiri K, Shimada N, Shibata H, Ochi H, Yasuda S, Toyoda H, Fukunishi S, Ohama H, Kawata K, Tani J, Nakamura S, Nouso K, Tsutsui A, Nagano T, Takaaki T, Itokawa N, Okubo T, Arai T, Imai M, Joko K, Koizumi Y, Hiasa Y, Cucchetti A, Ratti F, Aldrighetti L, Cascinu S, Casadei-Gardini A. Nonalcoholic steatohepatitis in hepatocarcinoma: new insights about its prognostic role in patients treated with lenvatinib. ESMO Open 2021; 6:100330. [PMID: 34847382 PMCID: PMC8710492 DOI: 10.1016/j.esmoop.2021.100330] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 10/01/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) treatment remains a big challenge in the field of oncology. The liver disease (viral or not viral) underlying HCC turned out to be crucial in determining the biologic behavior of the tumor, including its response to treatment. The aim of this analysis was to investigate the role of the etiology of the underlying liver disease in survival outcomes. PATIENTS AND METHODS We conducted a multicenter retrospective study on a large cohort of patients treated with lenvatinib as first-line therapy for advanced HCC from both Eastern and Western institutions. Univariate and multivariate analyses were performed. RESULTS Among the 1232 lenvatinib-treated HCC patients, 453 (36.8%) were hepatitis C virus positive, 268 hepatitis B virus positive (21.8%), 236 nonalcoholic steatohepatitis (NASH) correlate (19.2%) and 275 had other etiologies (22.3%). The median progression-free survival (mPFS) was 6.2 months [95% confidence interval (CI) 5.9-6.7 months] and the median overall survival (mOS) was 15.8 months (95% CI 14.9-17.2 months). In the univariate analysis for OS NASH-HCC was associated with longer mOS [22.2 versus 15.1 months; hazard ratio (HR) 0.69; 95% CI 0.56-0.85; P = 0.0006]. In the univariate analysis for PFS NASH-HCC was associated with longer mPFS (7.5 versus 6.5 months; HR 0.84; 95% CI 0.71-0.99; P = 0.0436). The multivariate analysis confirmed NASH-HCC (HR 0.64; 95% CI 0.48-0.86; P = 0.0028) as an independent prognostic factor for OS, along with albumin-bilirubin (ALBI) grade, extrahepatic spread, neutrophil-to-lymphocyte ratio, portal vein thrombosis, Eastern Cooperative Oncology Group (ECOG) performance status and alpha-fetoprotein. An interaction test was performed between sorafenib and lenvatinib cohorts and the results highlighted the positive predictive role of NASH in favor of the lenvatinib arm (P = 0.0047). CONCLUSION NASH has been identified as an independent prognostic factor in a large cohort of patients with advanced HCC treated with lenvatinib, thereby suggesting the role of the etiology in the selection of patients for tyrosine kinase treatment. If validated, this result could provide new insights useful to improve the management of these patients.
Collapse
Affiliation(s)
- M Rimini
- Department of Oncology and Hematology, Division of Oncology, University of Modena and Reggio Emilia, Modena, Italy
| | - M Kudo
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - T Tada
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - S Shigeo
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - W Kang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - G Suda
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - A Jefremow
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nuremberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany
| | - V Burgio
- Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - M Iavarone
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Division of Gastroenterology and Hepatology, Milan, Italy
| | - R Tortora
- Liver Unit, Department of Transplantation, Cardarelli Hospital, Naples, Italy
| | - F Marra
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - S Lonardi
- Medical Oncology Unit 3, Department of Oncology, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - E Tamburini
- Department of Medical Oncology, Card. G. Panico Hospital of Tricase, Tricase, Italy
| | - F Piscaglia
- Division of Internal Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - G Masi
- Unit of Medical Oncology, Pisa University Hospital, Pisa, Italy
| | - G Cabibbo
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
| | - F G Foschi
- Azienda Unità Sanitaria della Romagna, Ospedale degli Infermi, Faenza, Italy
| | - M Silletta
- Medical Oncology Unit, University Campus Bio-Medico, Rome, Italy
| | - T Kumada
- Faculty of Nursing, Gifu Kyoritsu University, Ogaki, Japan
| | - H Iwamoto
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - T Aoki
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - M J Goh
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - J Siebler
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nuremberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany
| | - A Hiraoka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - T Niizeki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - K Ueshima
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - T Sho
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - M Atsukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Hirooka
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Matsuyama, Japan
| | - K Tsuji
- Center of Gastroenterology, Teine Keijinkai Hospital, Sapporo, Japan
| | - T Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Takaguchi
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - K Kariyama
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - E Itobayashi
- Department of Gastroenterology, Asahi General Hospital, Asahi, Japan
| | - K Tajiri
- Department of Gastroenterology, Toyama University Hospital, Toyama, Japan
| | - N Shimada
- Division of Gastroenterology and Hepatology, Otakanomori Hospital, Kashiwa, Japan
| | - H Shibata
- Department of Gastroenterology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - H Ochi
- Hepato-biliary Center, Matsuyama Red Cross Hospital, Matsuyama, Japan
| | - S Yasuda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - H Toyoda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - S Fukunishi
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - H Ohama
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - K Kawata
- Hepatology Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - J Tani
- Department of Gastroenterology and Neurology, Kagawa University School of Medicine, Kagawa, Japan
| | - S Nakamura
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - K Nouso
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - A Tsutsui
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Nagano
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Takaaki
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - N Itokawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Okubo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Arai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Imai
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Joko
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Y Koizumi
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Y Hiasa
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - A Cucchetti
- Department of Medical and Surgical Sciences-DIMEC, Alma Mater Studiorum - University of Bologna, Bologna, Italy; Department of Surgery, Morgagni - Pierantoni Hospital, Forlì, Italy
| | - F Ratti
- Hepatobiliary Surgery Division, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - L Aldrighetti
- Hepatobiliary Surgery Division, IRCCS San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
| | - S Cascinu
- Vita-Salute San Raffaele University, Milan, Italy; Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - A Casadei-Gardini
- Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy.
| |
Collapse
|
4
|
Murakami Y, Soyano T, Kozuka T, Ushijima M, Koizumi Y, Miyauchi H, Kaneko M, Nakano M, Kamima T, Hashimoto T, Oguchi M, Yoshioka Y. Can Dosiomics Features Be Relevant Predictive Factors for Biochemical Recurrence After Radiotherapy in Prostate Cancer Patients? Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
5
|
Nagaki Y, Motoyama S, Yamaguchi T, Hoshizaki M, Sato Y, Sato T, Koizumi Y, Wakita A, Kawakita Y, Imai K, Nanjo H, Watanabe H, Imai Y, Minamiya Y, Kuba K. m 6 A demethylase ALKBH5 promotes proliferation of esophageal squamous cell carcinoma associated with poor prognosis. Genes Cells 2020; 25:547-561. [PMID: 32449584 DOI: 10.1111/gtc.12792] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 05/07/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 12/13/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the most fatal types of malignant tumors worldwide. Epitranscriptome, such as N6 -methyladenosine (m6 A) of mRNA, is an abundant post-transcriptional mRNA modification and has been recently implicated to play roles in several cancers, whereas the significance of m6 A modifications is virtually unknown in ESCC. Analysis of tissue microarray of the tumors in 177 ESCC patients showed that higher expression of m6 A demethylase ALKBH5 correlated with poor prognosis and that ALKBH5 was an independent prognostic factor of the survival of patients. There was no correlation between the other demethylase FTO and prognosis. siRNA knockdown of ALKBH5 but not FTO significantly suppressed proliferation and migration of human ESCC cells. ALKBH5 knockdown delayed progression of cell cycle and accumulated the cells to G0/G1 phase. Mechanistically, expression of CDKN1A (p21) was significantly up-regulated in ALKBH5-depleted cells, and m6 A modification and stability of CDKN1A mRNA were increased by ALKBH5 knockdown. Furthermore, depletion of ALKBH5 substantially suppressed tumor growth of ESCC cells subcutaneously transplanted in BALB/c nude mice. Collectively, we identify ALKBH5 as the first m6 A demethylase that accelerates cell cycle progression and promotes cell proliferation of ESCC cells, which is associated with poor prognosis of ESCC patients.
Collapse
Affiliation(s)
- Yushi Nagaki
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, Akita, Japan.,Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Satoru Motoyama
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, Akita, Japan
| | - Midori Hoshizaki
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, Akita, Japan.,Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Yusuke Sato
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Teruki Sato
- Department of Cardiology, Akita University Graduate School of Medicine, Akita, Japan
| | - Yukio Koizumi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, Akita, Japan
| | - Akiyuki Wakita
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Yuta Kawakita
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Kazuhiro Imai
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Hiroshi Nanjo
- Department of Pathology, Akita University Graduate School of Medicine, Akita, Japan
| | - Hiroyuki Watanabe
- Department of Cardiology, Akita University Graduate School of Medicine, Akita, Japan
| | - Yumiko Imai
- Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Yoshihiro Minamiya
- Department Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, Akita, Japan
| |
Collapse
|
6
|
Koizumi Y, Sakata M, Shiota A, Hagihara M, Asai N, Yamagishi Y, Mikamo H. The diagnostic ability of plasma Procalcitonin levels in Gram positive bacteremia. J Infect Public Health 2020. [DOI: 10.1016/j.jiph.2020.01.081] [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] Open
|
7
|
Koizumi Y, Fukushima J, Kobayashi Y, Kadowaki A, Natsui M, Yamaguchi T, Imai Y, Sugiyama T, Kuba K. Genome-Scale CRISPR/Cas9 Screening Reveals Squalene Epoxidase as a Susceptibility Factor for Cytotoxicity of Malformin A1. Chembiochem 2019; 20:1563-1568. [PMID: 30734978 PMCID: PMC6618319 DOI: 10.1002/cbic.201800769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/21/2019] [Indexed: 01/23/2023]
Abstract
Malformin A1 (MA1) is a fungus-produced cyclic pentapeptide. MA1 exhibits teratogenicity to plants, fibrinolysis-enhancing activity, and cytotoxicity to mammalian cells. To clarify the cytotoxic mechanism of MA1, we screened for the genes involved in the cytotoxicity of MA1 in monocytoid U937 cells by using a CRISPR/Cas9-based genome-wide knockout library. Screening was performed by positive selection for cells that were resistant to MA1 treatment, and single guide RNAs (sgRNAs) integrated into MA1-resistant cells were analyzed by high-throughput sequencing. As a result of the evaluation of sgRNAs that were enriched in MA1-resistant cells, SQLE, which encodes squalene epoxidase, was identified as a candidate gene. SQLE-depleted U937 cells were viable in the presence of MA1, and squalene epoxidase inhibitor conferred MA1 resistance to wild-type cells. These results indicate that squalene epoxidase is implicated in the cytotoxicity of MA1. This finding represents a new insight into applications of MA1 for treating ischemic diseases.
Collapse
Affiliation(s)
- Yukio Koizumi
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Jun Fukushima
- Department of BiotechnologyFaculty of Bioresource SciencesAkita Prefectural University241–438 Kaidobata-Nishi, Shimoshinjo-NakanoAkita010–0195Japan
| | - Yayoi Kobayashi
- Department of BiotechnologyFaculty of Bioresource SciencesAkita Prefectural University241–438 Kaidobata-Nishi, Shimoshinjo-NakanoAkita010–0195Japan
| | - Ayumi Kadowaki
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Miyuki Natsui
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Yumiko Imai
- Laboratory of Regulation of Intractable Infectious DiseasesNational Institutes of Biomedical Innovation, Health and Nutrition7-6-8 Saito-AsagiIbaraki, Osaka567-0085Japan
| | - Toshihiro Sugiyama
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| |
Collapse
|
8
|
Koizumi Y, Nagai K, Gao L, Koyota S, Yamaguchi T, Natsui M, Imai Y, Hasumi K, Sugiyama T, Kuba K. Involvement of RSK1 activation in malformin-enhanced cellular fibrinolytic activity. Sci Rep 2018; 8:5472. [PMID: 29615689 PMCID: PMC5882963 DOI: 10.1038/s41598-018-23745-0] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 03/15/2018] [Indexed: 12/03/2022] Open
Abstract
Pharmacological interventions to enhance fibrinolysis are effective for treating thrombotic disorders. Utilizing the in vitro U937 cell line-based fibrin degradation assay, we had previously found a cyclic pentapeptide malformin A1 (MA1) as a novel activating compound for cellular fibrinolytic activity. The mechanism by which MA1 enhances cellular fibrinolytic activity remains unknown. In the present study, we show that RSK1 is a crucial mediator of MA1-induced cellular fibrinolysis. Treatment with rhodamine-conjugated MA1 showed that MA1 localizes mainly in the cytoplasm of U937 cells. Screening with an antibody macroarray revealed that MA1 induces the phosphorylation of RSK1 at Ser380 in U937 cells. SL0101, an inhibitor of RSK, inhibited MA1-induced fibrinolytic activity, and CRISPR/Cas9-mediated knockout of RSK1 but not RSK2 suppressed MA1-enhanced fibrinolysis in U937 cells. Synthetic active MA1 derivatives also induced the phosphorylation of RSK1. Furthermore, MA1 treatment stimulated phosphorylation of ERK1/2 and MEK1/2. PD98059, an inhibitor of MEK1/2, inhibited MA1-induced phosphorylation of RSK1 and ERK1/2, indicating that MA1 induces the activation of the MEK-ERK-RSK pathway. Moreover, MA1 upregulated the expression of urokinase-type plasminogen activator (uPA) and increased uPA secretion. These inductions were abrogated in RSK1 knockout cells. These results indicate that RSK1 is a key regulator of MA1-induced extracellular fibrinolytic activity.
Collapse
Affiliation(s)
- Yukio Koizumi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan.
| | - Kenichiro Nagai
- School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Lina Gao
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Souichi Koyota
- Molecular Medicine Laboratory, Bioscience Education and Research Support Center, Akita University, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Miyuki Natsui
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Yumiko Imai
- Laboratory of Regulation of Intractable Infectious Diseases, National Institute of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki, Osaka, 567-0085, Japan
| | - Keiji Hasumi
- Department of Applied Biological Science, Tokyo Noko University, 3-5-8 Saiwaicho, Fuchu, Tokyo, 183-8509, Japan
| | - Toshihiro Sugiyama
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| |
Collapse
|
9
|
Yamaguchi T, Suzuki T, Sato T, Takahashi A, Watanabe H, Kadowaki A, Natsui M, Inagaki H, Arakawa S, Nakaoka S, Koizumi Y, Seki S, Adachi S, Fukao A, Fujiwara T, Natsume T, Kimura A, Komatsu M, Shimizu S, Ito H, Suzuki Y, Penninger JM, Yamamoto T, Imai Y, Kuba K. The CCR4-NOT deadenylase complex controls Atg7-dependent cell death and heart function. Sci Signal 2018; 11:11/516/eaan3638. [PMID: 29438013 DOI: 10.1126/scisignal.aan3638] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Shortening and removal of the polyadenylate [poly(A)] tail of mRNA, a process called deadenylation, is a key step in mRNA decay that is mediated through the CCR4-NOT (carbon catabolite repression 4-negative on TATA-less) complex. In our investigation of the regulation of mRNA deadenylation in the heart, we found that this complex was required to prevent cell death. Conditional deletion of the CCR4-NOT complex components Cnot1 or Cnot3 resulted in the formation of autophagic vacuoles and cardiomyocyte death, leading to lethal heart failure accompanied by long QT intervals. Cnot3 bound to and shortened the poly(A) tail of the mRNA encoding the key autophagy regulator Atg7. In Cnot3-depleted hearts, Atg7 expression was posttranscriptionally increased. Genetic ablation of Atg7, but not Atg5, increased survival and partially restored cardiac function of Cnot1 or Cnot3 knockout mice. We further showed that in Cnot3-depleted hearts, Atg7 interacted with p53 and modulated p53 activity to induce the expression of genes encoding cell death-promoting factors in cardiomyocytes, indicating that defects in deadenylation in the heart aberrantly activated Atg7 and p53 to promote cell death. Thus, mRNA deadenylation mediated by the CCR4-NOT complex is crucial to prevent Atg7-induced cell death and heart failure, suggesting a role for mRNA deadenylation in targeting autophagy genes to maintain normal cardiac homeostasis.
Collapse
Affiliation(s)
- Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Takashi Suzuki
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Teruki Sato
- Department of Cardiovascular and Respiratory Medicine, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Akinori Takahashi
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Hiroyuki Watanabe
- Department of Cardiovascular and Respiratory Medicine, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Ayumi Kadowaki
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Miyuki Natsui
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Hideaki Inagaki
- Bioscience Education and Research Support Center, Akita University, Akita 010-8543, Japan
| | - Satoko Arakawa
- Department of Pathological Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Shinji Nakaoka
- Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan.,Laboratory for Regulation of Intractable Infectious Diseases, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan
| | - Yukio Koizumi
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Shinsuke Seki
- Bioscience Education and Research Support Center, Akita University, Akita 010-8543, Japan
| | - Shungo Adachi
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - Akira Fukao
- Molecular Laboratory of Biochemistry, Department of Pharmacy, Kindai University, Higashi-Osaka 577-8502, Japan
| | - Toshinobu Fujiwara
- Molecular Laboratory of Biochemistry, Department of Pharmacy, Kindai University, Higashi-Osaka 577-8502, Japan
| | - Tohru Natsume
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan
| | - Akinori Kimura
- Department of Molecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Masaaki Komatsu
- Department of Biochemistry, School of Medicine, Niigata University, Niigata 951-8510, Japan
| | - Shigeomi Shimizu
- Department of Pathological Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Hiroshi Ito
- Department of Cardiovascular and Respiratory Medicine, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Yutaka Suzuki
- Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Campus Vienna BioCenter, Vienna 1030, Austria
| | - Tadashi Yamamoto
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Yumiko Imai
- Laboratory for Regulation of Intractable Infectious Diseases, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic Science, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan. .,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Tokyo 102-0076, Japan
| |
Collapse
|
10
|
Tasaka K, Shiba M, Koizumi Y, Anoda Y, Abe N. ROSA-III Base Test Series for a Large Break Loss-of-Coolant Accident in a Boiling Water Reactor. NUCL TECHNOL 2017. [DOI: 10.13182/nt82-a26280] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tasaka
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
| | - M. Shiba
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
| | - Y. Koizumi
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
| | - Y. Anoda
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
| | - N. Abe
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
| |
Collapse
|
11
|
Sefidvash F, Ahn DH, Levine SH, Kamei T, Yamaoka M, Moriki Y, Suzuki M, Arie K, Polley MV, Tokumasu S, Ozawa M, Hiranuma H, Yokomi M, Tanji J, Utena S, Kienzler B, Köster RH, Bergsma J, Helmholdt RB, Heijboer RJ, Wiencek TC, Domagala RF, Thresh HR, Harima Y, Ueki K, Aizawa O, Tasaka K, Koizumi Y, Kukita Y, Nakamura H, Anoda Y, Iriko M, Kumamaru H, Suzuki M, Yaung JY, Okrent D, Wazzan AR. Authors. NUCL TECHNOL 2017. [DOI: 10.13182/nt85-a33674] [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]
|
12
|
Tasaka K, Koizumi Y, Kukita Y, Nakamura H, Anoda Y, Iriko M, Kumamaru H, Suzuki M. Analyses of ROSA-III Break Area Spectrum Experiments on a Boiling Water Reactor Loss-of-Coolant Accident. NUCL TECHNOL 2017. [DOI: 10.13182/nt85-a33685] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tasaka
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - Y. Koizumi
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - Y. Kukita
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - H. Nakamura
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - Y. Anoda
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - M. Iriko
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - H. Kumamaru
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - M. Suzuki
- Japan Atomic Energy Research Institute, Department of Nuclear Safety Research Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| |
Collapse
|
13
|
Tasaka K, Suzuki M, Anoda Y, Koizumi Y, Yonomoto T, Kumamaru H, Nakamura H, Shiba M. ROSA-III Double-Ended Break Test Series for a Loss-of-Coolant Accident in a Boiling Water Reactor. NUCL TECHNOL 2017. [DOI: 10.13182/nt85-a33569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tasaka
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - M. Suzuki
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - Y. Anoda
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - Y. Koizumi
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - T. Yonomoto
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - H. Kumamaru
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - H. Nakamura
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| | - M. Shiba
- Japan Atomic Energy Research Institute Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
| |
Collapse
|
14
|
Koizumi Y, Nagai K, Hasumi K, Kuba K, Sugiyama T. Structure-activity relationship of cyclic pentapeptide malformins as fibrinolysis enhancers. Bioorg Med Chem Lett 2016; 26:5267-5271. [PMID: 27680590 DOI: 10.1016/j.bmcl.2016.09.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/14/2016] [Accepted: 09/16/2016] [Indexed: 11/17/2022]
Abstract
The formation of blood clots in blood vessels causes severe ischemic diseases such as cerebral infarction and myocardial infarction. While searching for microbial products that increase fibrinolytic activity using an in vitro fibrin degradation assay, we found malformin A1, a disulfide form of cyclo(-d-Cys-d-Cys-l-Val-d-Leu-l-Ile-), as an active compound. In this study, we synthesized malformin derivatives using a solid-phase peptide synthesis method and evaluated their fibrinolytic activity and cytotoxicity. Reduction of the disulfide bond and linearization of the cyclic peptide frame decreased the pro-fibrinolytic activity. Substitution of a branched-chain amino acid with lysine resulted in loss of activity. However, protection of the amino group in the lysine derivatives by the tert-butoxycarbonyl (Boc) group rescued the inactivity. Furthermore, the phenylalanine derivatives also exhibited a similar pro-fibrinolytic effect compared to malformin A1. These results suggest that the disulfide bond, the cyclic peptide frame, and the bulky hydrophobic side chains play a crucial role in the pro-fibrinolytic activity of malformin. The effective dose of the active derivatives for the in vitro fibrin degradation showed similar ranges (1-5μM), while the order of cytotoxic potency for the active derivatives was as follows: Phe-derivatives>BocLys-derivatives>malformin A1>reduced form. These results showed no correlation between pro-fibrinolytic activity and cytotoxicity, suggesting the possibility of the synthesis for non-toxic malformin derivatives possessing the activity.
Collapse
Affiliation(s)
- Yukio Koizumi
- Department of Biochemistry, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan.
| | - Kenichiro Nagai
- School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Keiji Hasumi
- Department of Applied Biological Science, Tokyo Noko University, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan
| | - Keiji Kuba
- Department of Biochemistry, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Toshihiro Sugiyama
- Department of Biochemistry, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| |
Collapse
|
15
|
Kanno H, Ozawa H, Koizumi Y, Morozumi N, Aizawa T, Itoi E. Increased Facet Fluid Predicts Dynamic Changes in the Dural Sac Size on Axial-Loaded MRI in Patients with Lumbar Spinal Canal Stenosis. AJNR Am J Neuroradiol 2015; 37:730-5. [PMID: 26564439 DOI: 10.3174/ajnr.a4582] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/18/2015] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND PURPOSE Axial-loaded MR imaging, which simulates the spinal canal in a standing position, demonstrates reductions of the dural sac cross-sectional area in patients with lumbar spinal canal stenosis. However, there has been no useful conventional MR imaging finding for predicting a reduction in the dural sac cross-sectional area on axial-loaded MR imaging. Previous studies have shown that increased facet fluid is associated with the spinal instability detected during positional changes. The purpose of this study was to analyze the correlations between facet fluid and dynamic changes in the dural sac cross-sectional area on axial-loaded MR imaging. MATERIALS AND METHODS In 93 patients with lumbar spinal canal stenosis, the dural sac cross-sectional area was measured by using axial images of conventional and axial-loaded MR imaging. Changes in the dural sac cross-sectional area induced by axial loading were calculated. The correlation between the facet fluid width measured on conventional MR imaging and the change in dural sac cross-sectional area was analyzed. The change in the dural sac cross-sectional area was compared between the intervertebral levels with and without the facet fluid width that was over the cutoff value determined in this study. RESULTS The dural sac cross-sectional area was significantly smaller on axial-loaded MR imaging than on conventional MR imaging. The facet fluid width significantly correlated with the change in the dural sac cross-sectional area (r = 0.73, P < .001). The change in the dural sac cross-sectional area at the intervertebral level with the facet fluid width over the cutoff value was significantly greater than that at the other level. CONCLUSIONS The increased facet fluid on conventional MR imaging is highly predictive of the dynamic reduction of dural sac cross-sectional area detected on axial-loaded MR imaging in the clinical assessment of lumbar spinal canal stenosis.
Collapse
Affiliation(s)
- H Kanno
- From the Department of Orthopedic Surgery (H.K., H.O., T.A., E.I.), Tohoku University School of Medicine, Sendai, Japan
| | - H Ozawa
- From the Department of Orthopedic Surgery (H.K., H.O., T.A., E.I.), Tohoku University School of Medicine, Sendai, Japan
| | - Y Koizumi
- Department of Orthopedic Surgery (Y.K., N.M.), Sendai Nishitaga National Hospital, Sendai, Japan
| | - N Morozumi
- Department of Orthopedic Surgery (Y.K., N.M.), Sendai Nishitaga National Hospital, Sendai, Japan
| | - T Aizawa
- From the Department of Orthopedic Surgery (H.K., H.O., T.A., E.I.), Tohoku University School of Medicine, Sendai, Japan
| | - E Itoi
- From the Department of Orthopedic Surgery (H.K., H.O., T.A., E.I.), Tohoku University School of Medicine, Sendai, Japan
| |
Collapse
|
16
|
Omata Y, Koizumi Y, Oka H, Yasui T, Ohashi S, Ono K, Shoda N, Yoshimura N, Kadono Y, Nishino J, Tanaka S. AB0402 Comparison of Quantitative Measurement of Knee Radiographs Revealed that Lateral Joint Space Narrowing Suggested Rheumatoid Arthritis Rather than Osteoarthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3933] [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: 11/04/2022]
|
17
|
Zhou X, Koizumi Y, Zhang M, Natsui M, Koyota S, Yamada M, Kondo Y, Hamada F, Sugiyama T. Cadmium-coordinated supramolecule suppresses tumor growth of T-cell leukemia in mice. Cancer Sci 2015; 106:635-41. [PMID: 25735932 PMCID: PMC4452166 DOI: 10.1111/cas.12651] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 10/10/2014] [Revised: 02/22/2015] [Accepted: 02/26/2015] [Indexed: 11/30/2022] Open
Abstract
Cadmium is a toxic pollutant with occupational and environmental significance, due to its diverse toxic effects. Supramolecules that conjugate and decontaminate toxic metals have potential for use in treatment of cadmium intoxication. In addition, metal-coordinating ability has been postulated to contribute to the cytotoxic effects of anti-tumor agents such as cisplatin or bleomycin. Thiacalixarenes, cyclic oligomers of p-alkylphenol bridged by sulfur atoms, are supramolecules known to have potent coordinating ability to metal ions. In this study, we show that cadmium-coordinated thiacalix[4]arene tetrasulfate (TC4ATS-Cd) exhibits an anti-proliferative effect against T-cell leukemia cells. Cadmium exhibited cytotoxicity with IC50 values ranging from 36 to 129 μM against epithelia-derived cancer cell lines, while TC4ATS-Cd elicited no significant cytotoxicity (IC50 > 947 μM). However, a number of T-cell leukemia cell lines exhibited marked sensitivity to TC4ATS-Cd. In Jurkat cells, toxicity of TC4ATS-Cd occurred with an IC50 of 6.9 μM, which is comparable to that of 6.5 μM observed for cadmium alone. TC4ATS-Cd induced apoptotic cell death through activation of caspase-3 in Jurkat cells. In a xenograft model, TC4ATS-Cd (13 mg/kg) treatment significantly suppressed the tumor growth of Jurkat cells in mice. In addition, TC4ATS-Cd-treated mice exhibited significantly less cadmium accumulation in liver and kidney compared to equimolar cadmium-treated mice. These results suggest that cadmium-coordinated supramolecules may have therapeutic potential for treatment of T-cell leukemia.
Collapse
Affiliation(s)
- Xiaoping Zhou
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
- Venture Business Laboratory, Akita UniversityAkita, Japan
| | - Yukio Koizumi
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
| | - Muxin Zhang
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
| | - Miyuki Natsui
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
| | - Souichi Koyota
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
| | - Manabu Yamada
- Research Center for Engineering Science, Graduate School of Engineering and Resource Science, Akita UniversityAkita, Japan
| | - Yoshihiko Kondo
- Department of Life Science, Graduate School of Engineering and Resource Science, Akita UniversityAkita, Japan
| | - Fumio Hamada
- Applied Chemistry, Graduate School of Engineering and Resource Science, Akita UniversityAkita, Japan
| | - Toshihiro Sugiyama
- Department of Biochemistry, Akita University Graduate School of MedicineAkita, Japan
| |
Collapse
|
18
|
Aizumi S, Shirao M, Yamamuro Y, Koizumi Y, Ono M, Furue H. Fabrication of Liquid Crystal Cell with Phase Separated Composite Organic Film. J PHOTOPOLYM SCI TEC 2013. [DOI: 10.2494/photopolymer.26.387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
19
|
Ozawa H, Kanno H, Koizumi Y, Morozumi N, Aizawa T, Kusakabe T, Ishii Y, Itoi E. Dynamic changes in the dural sac cross-sectional area on axial loaded MR imaging: is there a difference between degenerative spondylolisthesis and spinal stenosis? AJNR Am J Neuroradiol 2012; 33:1191-7. [PMID: 22322611 DOI: 10.3174/ajnr.a2920] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND PURPOSE Axial loaded MR imaging, which can simulate the spinal canal of patients in a standing position, demonstrates a significant reduction of the DCSA compared with conventional MR imaging and provides valuable imaging findings in the assessment of the lumbar spinal canal. The purpose of this study was to compare the DCSA on axial loaded MR imaging between patients with DS and SpS. MATERIALS AND METHODS Eighty-eight consecutive patients were divided into DS and SpS groups. DCSA on conventional MR imaging and axial loaded MR imaging and changes in the DCSA induced by axial loading were compared between DS and SpS groups. The prevalence of a significant change (>15 mm(2)) in the DCSA was compared between the 2 groups. RESULTS Axial loaded MR imaging demonstrated significantly smaller DCSA in the DS group (35 ± 22 mm(2)) than in the SpS group (50 ± 31 mm(2)), though conventional MR imaging did not show any differences between the 2 groups. The change in the DCSA induced by axial loading was significantly larger in the DS group (17 ± 12 mm(2)) compared with the SpS group (8 ± 8 mm(2)). The prevalence of a >15-mm(2) change in the DCSA was significantly higher in the DS group (62.5%) than in the SpS group (16.7%) (odds ratio, 8.33; 95% confidence interval, 3.09-22.50). CONCLUSIONS Axial loaded MR imaging demonstrated significantly larger changes in the DCSA in patients with DS compared those with SpS. A significant change in the DCSA was more frequently observed in patients with DS. Axial loaded MR imaging may therefore be a more useful tool to decrease the risk of underestimating the spinal canal narrowing in patients with DS than in those with SpS.
Collapse
Affiliation(s)
- H Ozawa
- Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Ma L, Koyota S, Myoen Y, Yamashita T, Yatabe N, Koizumi Y, Aosasa M, Nishimichi N, Matsuda H, Sugiyama T. Generation of intracellular single-chain antibodies directed against polypeptide GalNAc-transferase using a yeast two-hybrid system. Biochem Biophys Res Commun 2012; 418:628-33. [PMID: 22290229 DOI: 10.1016/j.bbrc.2012.01.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 01/13/2012] [Indexed: 10/14/2022]
Abstract
Mucin-type O-glycosylation is initiated by a large number of UDP-GalNAc: polypeptide N-acetylgalactosaminyltransferases (GalNAc-T). Although extensive in vitro studies using synthetic peptides as substrates suggest that most GalNAc-Ts exhibit overlapping substrate specificities, many studies have shown that individual GalNAc-Ts play an important role in both animals and humans. Further investigations of the functions of individual GalNAc-Ts including in vivo substrate proteins and O-glycosylation sites are necessary. In this study, we attempted to generate single-chain variable fragment (scFv) antibodies to bind to GalNAc-T1, T2, T3, and T4 using a yeast two-hybrid system for screening a naive chicken scFv library. Several different scFvs were isolated against a single target GalNAc-T isoform specifically under expressed in yeast and were confirmed to be expressed in mammalian cells and to retain binding activity inside the cells. Generation of these specific antibodies provides an opportunity to modify and exploit antibodies for specific applications in investigations of GalNAc-T functions.
Collapse
Affiliation(s)
- Li Ma
- Department of Biochemistry, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Koizumi Y, Fukudome H, Hasumi K. Fibrinolytic activation promoted by the cyclopentapeptide malformin: involvement of cytoskeletal reorganization. Biol Pharm Bull 2011; 34:1426-31. [PMID: 21881228 DOI: 10.1248/bpb.34.1426] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Malformin A₁, a cyclopentapeptide of fungal origin, enhances cellular fibrinolytic activity depending on the existence of a cofactor in blood plasma. However, the nature of this cofactor remains unknown. Here, we report that vitronectin acts as a plasma cofactor of malformin A₁. We purified the cofactor from bovine plasma by activity-based fractionation, and confirmed that vitronectin in conjunction with plasminogen supports the activity of malformin A₁ to promote the fibrinolytic activity of U937 cells. Malformin A₁ action was abolished by Arg-Gly-Asp peptide (a competitor of vitronectin-integrin binding), wortmannin (an inhibitor of signaling kinases), and cytochalasin B (an inhibitor of actin polymerization). Changes in actin organization and a decrease in filopodia were observed in cells treated with malformin A₁ and plasma. A focal localization of plasminogen on the cell surface was augmented by malformin A₁, whereas the amount of cell-surface-bound plasminogen was minimally altered by the treatment. Our results suggest the involvement of cytoskeletal reorganization via vitronectin signaling in the cellular fibrinolytic activity-enhancing action of malformin A₁.
Collapse
Affiliation(s)
- Yukio Koizumi
- Department of Applied Biological Science, Tokyo Noko University, Tokyo, Japan.
| | | | | |
Collapse
|
22
|
Kuhara M, Wang J, Flores MJ, Qiao Z, Koizumi Y, Koyota S, Taniguchi N, Sugiyama T. Sexual dimorphism in LEC rat liver: suppression of carbonic anhydrase III by copper accumulation during hepatocarcinogenesis. ACTA ACUST UNITED AC 2011; 32:111-7. [PMID: 21551946 DOI: 10.2220/biomedres.32.111] [Citation(s) in RCA: 7] [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]
Abstract
We examined age-related changes in the protein expression of carbonic anhydrase III (CAIII) in livers of Long-Evans with a cinnamon-like color (LEC) rats using an agouti color (LEA) rats as controls. The levels of the protein of CAIII in the liver of LEC male rats increased before 20 weeks of age, at the stage of acute hepatitis, and were decreased at 54 weeks of age, while those of CAIII in the liver of LEA male rats were highly expressed at all ages. In the normal LEA rats, CAIII showed sexual dimorphism. The level of CAIII in LEA male rat liver relative to female was four times higher. On the other hand, young LEC rat (at 4-12 weeks) showed a higher protein level of CAIII than LEA rats, and then decreased during development of hepatitis. CAIII mRNA also decreased in the LEC rat liver during hepatocarcinogenesis. The level of CAIII in the tumor region was lower than that in the tumor-free region. Immunohistochemical analysis showed that glutathione S-transferase P (GST-P) was positive and CAIII was negative in the precancerous region. The expression of CAIII was suppressed in cancerous lesions in hepatoma-bearing LEC rat liver compared to uninvolved surrounding tissues. These results indicated that suppression of CAIII accompanied hepatocarcinogenesis and it is a secondary consequence of the high copper levels in the liver.
Collapse
Affiliation(s)
- Makihiko Kuhara
- Department of Biochemistry, Osaka University Graduate School of Medicine, Yamadaoka, Suita, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Miura I, Kitamoto H, Koizumi Y, Ogata M, Sasaki K. An X-linked body color gene of the frog Rana rugosa and its application to the molecular analysis of gonadal sex differentiation. Sex Dev 2011; 5:250-8. [PMID: 21832826 DOI: 10.1159/000330365] [Citation(s) in RCA: 7] [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] [Accepted: 05/31/2011] [Indexed: 11/19/2022] Open
Abstract
We identified a sex-linked, recessive body color gene, presently designated w (whitish-yellow), in the frog Rana rugosa from the Iwakuni population in Western Japan. This is the first time a sex-linked body color gene was found in amphibians so far. In this population of R. rugosa, males are the heterogametic sex, but the sex chromosomes are still homomorphic. When heterozygous males (Ww), which were produced by crossing a whitish-yellow female (ww) found in the field and a wild-type male (WW) of the same population, were backcrossed to the homozygous whitish-yellow female (ww), the resultant male offspring were all wild-type, whereas the females were all whitish-yellow. This result definitely indicates that w is recessive and X-linked, and its wild-type allele W is located on the Y chromosome. Using this strain (X(w)X(w) female and X(w)Y(W) male), we found that expression of Dmrt1 and Rspo1, which are involved in testicular and ovarian differentiation in vertebrates, was higher in males and females, respectively, prior to the onset of the sexually dimorphic expression of Cyp17 and Cyp19, which are involved in biosynthesis of sex steroids and are critical markers of gonadal sex differentiation.
Collapse
Affiliation(s)
- I Miura
- Institute for Amphibian Biology, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Japan.
| | | | | | | | | |
Collapse
|
24
|
Yusa K, Yamamoto O, Fukuda M, Koyota S, Koizumi Y, Sugiyama T. In vitro prominent bone regeneration by release zinc ion from Zn-modified implant. Biochem Biophys Res Commun 2011; 412:273-8. [PMID: 21820411 DOI: 10.1016/j.bbrc.2011.07.082] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 07/20/2011] [Indexed: 10/17/2022]
Abstract
Zinc is one of the trace elements which induce the proliferation and the differentiation of the osteoblast. In the previous study, we found that zinc ions (Zn(2+) ion)-releasing titanium implants had excellent bone fixation using a rabbit femurs model. In this study, we isolated the Zn(2+) ions (eluted Zn(2+) ion; EZ) released from the implant surface, and evaluated the effect of EZ on the osteogenesis of human bone marrow-derived mesenchymal cells (hBMCs). In the result, it was found that the EZ stimulated cell viability, osteoblast marker gene (type I collagen, osteocalcin (OC), alkaline phosphatase (ALP) and bone sialoprotein (BSP)) expressions and calcium deposition in hBMCs.
Collapse
Affiliation(s)
- Kazuyuki Yusa
- Department of Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | | | | | | | | | | |
Collapse
|
25
|
Koizumi Y, Tomoda H, Kumagai A, Zhou XP, Koyota S, Sugiyama T. Simaomicin α, a polycyclic xanthone, induces G₁ arrest with suppression of retinoblastoma protein phosphorylation. Cancer Sci 2011; 100:322-6. [PMID: 19077005 DOI: 10.1111/j.1349-7006.2008.01033.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Recent progress in cancer biology research has shown that abnormal proliferation in tumor cells can be attributed to aberrations in cell cycle regulation, especially in G₁ phase. During the course of searching for microbial metabolites that affect cell cycle distribution, we have found that simaomicin α, a polycyclic xanthone antibiotic, arrests the cell cycle at G₁ phase. Treatment of T-cell leukemia Jurkat cells with 3 nM simaomicin α induced an increase in the number of cells in G₁ and a decrease in those in G₂–M phase. Cell cycle aberrations induced by simaomicin α were also detected in colon adenocarcinoma HCT15 cells. Simaomicin α had antiproliferative activities in various tumor cell lines with 50% inhibitory concentration values in the range of 0.3–19 nM. Furthermore, simaomicin α induced an increase in cellular caspase-3 activity and DNA fragmentation, indicating that simaomicin α promotes apoptosis. The retinoblastoma protein phosphorylation status of simaomicin α-treated cell lysate was lower than that of control cells, suggesting that the target molecule of simaomicin α is in a pathway upstream of retinoblastoma protein phosphorylation. In the course of evaluating polycyclic xanthone antibiotics structurally related to simaomicin α, we also found that cervinomycin A1 stimulated accumulation of treated cells in G₁ phase. These results indicate that the polycyclic xanthones, including simaomicin α and cervinomycin A1, may be candidate cancer chemotherapeutic agents.
Collapse
Affiliation(s)
- Yukio Koizumi
- Department of Biochemistry, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan
| | | | | | | | | | | |
Collapse
|
26
|
Koizumi Y, Nishida Y, Miyazaki Y, Motomura Y, Yamanaka T, Mizoguchi H. Quantitative risk assessment of the swing in a park by integrating injury data, behaviour observation data and biomechanical simulation technology. Inj Prev 2010. [DOI: 10.1136/ip.2010.029215.846] [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: 11/04/2022]
|
27
|
Iwatsuki M, Koizumi Y, Gouda H, Hirono S, Tomoda H, Ōmura S. Lys17 in the ‘lasso’ peptide lariatin A is responsible for anti-mycobacterial activity. Bioorg Med Chem Lett 2009; 19:2888-90. [DOI: 10.1016/j.bmcl.2009.03.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 02/18/2009] [Accepted: 03/10/2009] [Indexed: 10/21/2022]
|
28
|
Ishikawa M, Tanasupawat S, Nakajima K, Kanamori H, Ishizaki S, Kodama K, Okamoto-Kainuma A, Koizumi Y, Yamamoto Y, Yamasato K. Alkalibacterium thalassium sp. nov., Alkalibacterium pelagium sp. nov., Alkalibacterium putridalgicola sp. nov. and Alkalibacterium kapii sp. nov., slightly halophilic and alkaliphilic marine lactic acid bacteria isolated from marine organisms and salted foods collected in Japan and Thailand. Int J Syst Evol Microbiol 2009; 59:1215-26. [DOI: 10.1099/ijs.0.65602-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
29
|
Yanagimoto C, Harada M, Kumemura H, Koga H, Kawaguchi T, Terada K, Hanada S, Taniguchi E, Koizumi Y, Koyota S, Ninomiya H, Ueno T, Sugiyama T, Sata M. Niemann-Pick C1 protein transports copper to the secretory compartment from late endosomes where ATP7B resides. Exp Cell Res 2009; 315:119-26. [PMID: 19007772 DOI: 10.1016/j.yexcr.2008.10.022] [Citation(s) in RCA: 22] [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: 04/03/2008] [Revised: 08/28/2008] [Accepted: 10/15/2008] [Indexed: 10/21/2022]
Abstract
Wilson disease is a genetic disorder characterized by the accumulation of copper in the body by defective biliary copper excretion. Wilson disease gene product (ATP7B) functions in copper incorporation to ceruloplasmin (Cp) and biliary copper excretion. However, copper metabolism in hepatocytes has been still unclear. Niemann-Pick disease type C (NPC) is a lipid storage disorder and the most commonly mutated gene is NPC1 and its gene product NPC1 is a late endosome protein and regulates intracellular vesicle traffic. In the present study, we induced NPC phenotype and examined the localization of ATP7B and secretion of holo-Cp, a copper-binding mature form of Cp. The vesicle traffic was modulated using U18666A, which induces NPC phenotype, and knock down of NPC1 by RNA interference. ATP7B colocalized with the late endosome markers, but not with the trans-Golgi network markers. U18666A and NPC1 knock down decreased holo-Cp secretion to culture medium, but did not affect the secretion of other secretory proteins. Copper accumulated in the cells after the treatment with U18666A. These findings suggest that ATP7B localizes in the late endosomes and that copper in the late endosomes is transported to the secretory compartment via NPC1-dependent pathway and incorporated into apo-Cp to form holo-Cp.
Collapse
Affiliation(s)
- Chikatoshi Yanagimoto
- Division of Gastroenterology, Department of Medicine and Research Center for Innovative Cancer Therapy of the 21st Century COE Program for Medical Science, Kurume University School of Medicine, Kurume, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Hayashi K, Motoyama S, Koyota S, Koizumi Y, Wang J, Takasawa S, Itaya-Hironaka A, Sakuramoto-Tsuchida S, Maruyama K, Saito H, Minamiya Y, Ogawa JI, Sugiyama T. REG I enhances chemo- and radiosensitivity in squamous cell esophageal cancer cells. Cancer Sci 2008; 99:2491-5. [PMID: 19032369 DOI: 10.1111/j.1349-7006.2008.00980.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Identification of reliable markers of chemo- and radiosensitivity and the key molecules that enhance the susceptibility of squamous esophageal cancer cells to anticancer treatments would be highly desirable. To test whether regenerating gene (REG) I expression enhances chemo- and radiosensitivity in esophageal squamous cell carcinoma cells, we used MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) assays to compare the chemo- and radiosensitivities of untransfected TE-5 and TE-9 cells with those of cells stably transfected with REG Ialpha and Ibeta. We then used flow cytometry to determine whether REG I expression alters cell cycle progression. No REG I mRNA or protein were detected in untransfected TE-5 and TE-9 cells. Transfection with REG Ialpha and Ibeta led to strong expression of both REG I mRNA and protein in TE-5 and TE-9 cells, which in turn led to significant increases in both chemo- and radiosensitivity. Cell cycle progression was unaffected by REG I expression. REG I thus appears to enhance the chemo- and radiosensitivity of squamous esophageal cancer cells, which suggests that it may be a useful target for improved and more individualized treatments for patients with esophageal squamous cell carcinoma.
Collapse
Affiliation(s)
- Kaori Hayashi
- Department of Biochemistry, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Abstract
To determine the cytochrome P450 (CYP) primarily expressed after styrene exposure, seven forms of hepatic CYP mRNA in rats treated with 600 mg kg(-1) styrene were examined. CYP1A2, CYP2B1/2, CYP2E1 and CYP3A2 mRNA were observed using real-time LightCycler PCR. The amount of CYP2B1 mRNA was significantly increased, 47-fold compared with controls, suggesting that this CYP is the primary cytochrome P450 in rats exposed to styrene. Significant increases in the amount of CYP2E1, CYP1A2 and CYP2B2 mRNA were also observed after styrene exposure, and their increase levels were 3.1-, 1.7- and 1.7-fold higher than controls, respectively. Western blot analysis also indicated that the protein levels of CYP2B1, CYP2B2, CYP2E1 and CYP1A2 showed clear increases after styrene treatment, corresponding to their mRNA expression. CYP2C11 mRNA decreased significantly in rats after styrene exposure. CYP1A1 was detected at the mRNA level in rat liver, but it was not detected at the protein level. The expression of epoxide hydrolase (EH), involved in Phase I drug metabolism, was also examined. EH mRNA increased 2-fold compared with controls after styrene exposure. Styrene thus appears to be a chemical compound that induces multiple CYPs. The results demonstrate that CYP2B1 is the primarily induced CYP form by styrene treatment to rats at acute toxic level.
Collapse
Affiliation(s)
- F Hirasawa
- Department of Biochemistry, Akita University School of Medicine, Japan
| | | | | | | | | | | |
Collapse
|
32
|
Hirasawa F, Kawagoe M, Wang JS, Arany S, Zhou XP, Kumagai A, Koizumi Y, Koyota S, Sugiyama T. Gadolinium chloride suppresses styrene-induced cytochrome P450s expression in rat liver. ACTA ACUST UNITED AC 2008; 28:323-30. [PMID: 18202523 DOI: 10.2220/biomedres.28.323] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To assess the effect of gadolinium (Gd) on the expression of several forms of cytochrome P450 (P450s) and antioxidant enzymes, we treated rats with gadolinium chloride (25 mg as Gd/kg body weight) 4 h after styrene (a multiple P450 inducer) treatment (600 mg/kg). Gd treatment significantly suppressed styrene-inducible cytochrome P4502B1 (CYP2B1), CYP2B2, CYP2E1, and CYP3A2 mRNA expressions to 48.6%, 69.8%, 61.1%, and 38.5%, accompanying with the reduction of proteins expression to 1.42%, 31.2%, 21.1% and 21.1%, respectively, compared with styrene alone treatment. Gd suppressed styrene-inducible CYP1A2 expression, but only at the protein level. On the other hand, styrene treatment caused a decrease in reduced form of glutathione (GSH), as well as increases in lipid peroxide and serum ALT and AST activities, suggesting the occurrence of hepatic damage probably due to styrene-induced oxidative stress in rat liver. Post-treatment of Gd attenuated this styrene-caused hepatic damage. Moreover, mRNA expressions of cellular antioxidant enzymes such as catalase, CuZn-superoxide dismutase (CuZnSOD) and glutathione peroxidase (GPX) were hardly changed by styrene and/or Gd treatment. In summary, Gd suppressed styrene-inducible expression of not only CYP2B1 but also several forms of P450 at both the mRNA and protein levels, along with attenuation of styrene-caused liver damage. These findings suggested that Gd is a chemo-preventive agent against hepatic damage caused by xenobiotics requiring biotransformation.
Collapse
Affiliation(s)
- Fujiko Hirasawa
- Department of Biochemistry, Akita University School of Medicine, Akita 010-8543, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Koizumi Y, Kurita-Ochiai T, Yamamoto M. Transcutaneous immunization with an outer membrane protein of Porphyromonas gingivalis without adjuvant elicits marked antibody responses. ACTA ACUST UNITED AC 2008; 23:131-8. [DOI: 10.1111/j.1399-302x.2007.00400.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Hayashi K, Motoyama S, Sugiyama T, Izumi JI, Anbai A, Nanjo H, Watanabe H, Maruyama K, Minamiya Y, Koyota S, Koizumi Y, Takasawa S, Murata K, Ogawa JI. REG Ialpha is a reliable marker of chemoradiosensitivity in squamous cell esophageal cancer patients. Ann Surg Oncol 2008; 15:1224-31. [PMID: 18259819 DOI: 10.1245/s10434-008-9810-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2007] [Revised: 12/09/2007] [Accepted: 12/10/2007] [Indexed: 01/28/2023]
Abstract
BACKGROUND A reliable marker of chemoradiosensitivity that would enable appropriate and individualized treatment of thoracic squamous cell esophageal cancer has long been sought. We investigated whether regenerating gene (REG) Ialpha is such a marker. METHODS We assessed expression of REG Ialpha in untreated endoscopic biopsy specimens and examined the correlation between REG Ialpha expression and the clinical responses to definitive chemoradiotherapy and prognosis. We also examined the relationship between REG Ialpha expression in the resected tumor and the prognosis of patients who received esophagectomy for thoracic squamous cell esophageal cancer. RESULTS Among the 42 patients treated with definitive chemoradiotherapy, 8 of the 23 REG I-positive patients (35%) showed complete responses to chemoradiotherapy, while only one of the 19 REG I-negative patients did so. The survival rate among the REG I-positive patients was significantly better than among the REG I-negative patients. For the 76 patients treated surgically, there was no significant difference in the survival rates among the REG I-positive and REG I-negative patients. CONCLUSIONS REG Ialpha expression in squamous cell esophageal carcinoma may be a reliable marker of chemoradiosensitivity. We anticipate that it will enable us to provide more appropriate and individualized treatment to patients of advanced esophageal squamous cell carcinoma.
Collapse
Affiliation(s)
- Kaori Hayashi
- Department of Surgery, Akita University School of Medicine, 1-1-1 Hondo, Akita, Japan, 010-8543
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Furue H, Ikawa T, Sakai H, Koizumi Y, Ono M. Molecular Alignment in Ferroelectric Liquid Crystal Display Having Microscopically Patterned Electrodes. J PHOTOPOLYM SCI TEC 2008. [DOI: 10.2494/photopolymer.21.207] [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: 11/09/2022]
|
36
|
Kawagoe M, Ishikawa K, Wang SC, Yoshikawa K, Arany S, Zhou XP, Wang JS, Ueno Y, Koizumi Y, Kameda T, Koyota S, Sugiyama T. Acute effects on the lung and the liver of oral administration of cerium chloride on adult, neonatal and fetal mice. J Trace Elem Med Biol 2008; 22:59-65. [PMID: 18319142 DOI: 10.1016/j.jtemb.2007.08.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Accepted: 08/24/2007] [Indexed: 11/25/2022]
Abstract
We evaluated tissue changes associated with cerium chloride administration via gavage to adult mice, via milk to neonatal mice and transplacentally to fetal mice. Change in adults consisted of extensive pulmonary hemorrhage, pulmonary venous congestion, thickened alveolar septae, hepatic necrosis and neutrophil infiltrations. Those in fetal mice consisted of pulmonary and hepatic congestion. These results indicate that gavage cerium administration elicited subtle tissue changes, though oral toxicity is rather low. These changes were less severe in neonatal and fetal mice. When cerium was injected into adult mice through the tail vein, cerium was distributed mainly to the liver, spleen and lung dose-dependently with the cerium concentration gradually decreasing after 3 days. A study of cerium anticoagulation in mouse plasma showed that clotting time was significantly prolonged when cerium was added to plasma. These results suggest that cerium may disturb blood coagulation and cause pulmonary and hepatic vascular congestion.
Collapse
Affiliation(s)
- Masami Kawagoe
- Department of Biochemistry, Akita University School of Medicine, Akita 010-8543, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Awata S, Bech P, Koizumi Y, Seki T, Kuriyama S, Hozawa A, Ohmori K, Nakaya N, Matsuoka H, Tsuji I. Validity and utility of the Japanese version of the WHO-Five Well-Being Index in the context of detecting suicidal ideation in elderly community residents. Int Psychogeriatr 2007; 19:77-88. [PMID: 16970832 DOI: 10.1017/s1041610206004212] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Accepted: 06/15/2006] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The aim of this study is to evaluate the validity and the utility of the Japanese version of the WHO-Five Well-Being Index (WHO-5-J) in the context of detecting suicidal ideation in elderly community residents. METHODS A sample of 696 subjects aged 70 years or over who completed a set of questionnaires was examined. RESULTS Cronbach's alpha was 0.87 and Loevinger's coefficient was 0.64. The total score was significantly correlated with the number of cohabitants, the number of physical illnesses, physical functioning, instrumental activities of daily living, and depressive symptoms. Subjects with suicidal ideation had significantly lower scores on the WHO-5-J. The receiver-operating characteristic curve analysis indicated that the scale significantly discriminated the subjects with suicidal ideation. When combined with the assessment of a lack of perceived social support (PSS), a standard cut-off criterion of "a total score < or = 12 or answering 0 or 1 to any of the five items" more appropriately identified elderly subjects with suicidal ideation: sensitivity = 87%, specificity = 75%, negative predictive value = 99%, and positive predictive value = 10%. CONCLUSIONS In combination with PSS, the scale has predictive utility to detect suicidal ideation in elderly community residents.
Collapse
Affiliation(s)
- S Awata
- Division of Neuropsychiatry and Center for Dementia, Sendai City Hospital, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Nakano Y, Okawa S, Yamauchi T, Koizumi Y, Sekiya J. Purification and properties of soluble and bound gamma-glutamyltransferases from radish cotyledon. Biosci Biotechnol Biochem 2006; 70:369-76. [PMID: 16495652 DOI: 10.1271/bbb.70.369] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 11/08/2022]
Abstract
Soluble and cell wall bound gamma-glutamyltransferases (GGTs) were purified from radish (Raphanus sativus L.) cotyledons. Soluble GGTs (GGT I and II) had the same M(r) of 63,000, and were composed of a heavy subunit (M(r), 42,000) and a light one (M(r), 21,000). The properties of GGT I and II were similar. Bound GGTs (GGT A and B) were purified to homogeneity from the pellet after the extraction of soluble GGTs. GGT A and B were monomeric proteins with an M(r) of 61,000. The properties of GGT A and B were similar. Thus, bound GGTs were distinguished from soluble GGTs. The optimal pHs of soluble and bound GGTs were about 7.5. Both soluble and bound GGTs utilized glutathione, gamma-L-glutamyl-p-nitroanilide, oxidized glutathione and the conjugate of glutathione with monobromobimane as substrates, and were inhibited by acivicin, but soluble GGTs were also distinguished from bound GGTs with regard to these properties.
Collapse
Affiliation(s)
- Yoshihiro Nakano
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Japan
| | | | | | | | | |
Collapse
|
39
|
Takahashi S, Ogasawara H, Hiwatashi K, Hata K, Hori K, Koizumi Y, Sugiyama T. Amino acid residues conferring the nucleotide binding properties of N-acetyl-D-glucosamine 2-epimerase (renin binding protein). Biomed Res 2006; 26:117-21. [PMID: 16011304 DOI: 10.2220/biomedres.26.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/23/2022]
Abstract
Our recent studies have demonstrated that the middle domain of N-acetyl-D-glucosamine (GlcNAc) 2-epimerase participates in the specificity for and binding of nucleotides. To identify the residue conferring nucleotide binding, amino acid substitutions were introduced in the human and rat GlcNAc 2-epimerases. The mutational analyses indicate that residue 171 of GlcNAc 2-epimerase is critical for the nucleotide binding of GlcNAc 2-epimerase.
Collapse
Affiliation(s)
- Saori Takahashi
- Department of Bioengineering, Akita Research Institute of Food and Brewing (ARIF), 4-26, Sanuki, Arayamachi, Akita 010-1623, Japan.
| | | | | | | | | | | | | |
Collapse
|
40
|
Ueno Y, Nagai H, Watanabe G, Ishikawa K, Yoshikawa K, Koizumi Y, Kameda T, Sugiyama T. Transplantation of rat hepatic stem-like (HSL) cells with collagen matrices. Hepatol Res 2005; 33:277-84. [PMID: 16300991 DOI: 10.1016/j.hepres.2005.09.034] [Citation(s) in RCA: 5] [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] [Received: 04/06/2005] [Revised: 09/02/2005] [Accepted: 09/14/2005] [Indexed: 02/08/2023]
Abstract
Organ restitution using somatic stem cells is of great clinical interest. Recent advances in the field of tissue engineering have demonstrated that the use of collagen matrices as scaffolds facilitates tissue reconstruction. Here, we examine the efficacy of transplantation of HSL cells, a previously established liver epithelial cell line with a potential for differentiation, using collagen scaffolds. To this end, HSL cells were transplanted into Nagase's analbuminemic rat with spongy or gelatinous type I collagen matrices. Consequently, immunohistochemical analyses and genomic PCR experiments revealed engraftment of the transplanted cells. Furthermore, the levels of serum albumin in recipient rats were found to increase up to 2.5-fold relative to controls after transplantation. These findings suggest that HSL cells are able to differentiate into functional hepatocytes in vivo, and that biodegradable collagen matrices enhance this phenomenon by providing an appropriate microenvironment for hepatocytic repopulation.
Collapse
Affiliation(s)
- Yasuharu Ueno
- Department of Biochemistry, Akita University School of Medicine, Hondo 1-1-1, Akita 010-8543, Japan
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Kashima Y, Iijima M, Nakano T, Tayama K, Koizumi Y, Udaka S, Yanagida F. Role of intracellular esterases in the production of esters by Acetobacter pasteurianus. J Biosci Bioeng 2005; 89:81-3. [PMID: 16232703 DOI: 10.1016/s1389-1723(00)88055-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/1999] [Accepted: 10/01/1999] [Indexed: 11/16/2022]
Abstract
Esters are the major flavor compounds produced by Acetobacter sp. during vinegar production. The two genes encoding the esterases in the bacteria were disrupted, and the effects of the disruptions studied. When cultured in the presence of ethanol, the est1 gene-disrupted mutant (DE1K) did not produce any ethyl acetate or isoamyl acetate. However, the disruption of est2 did not affect the ester production. Ethyl acetate production by N-23 (pME122P) and DE1K (pME122P), which contain est1, was 1.7-fold higher than that by the wild type, N-23. On analyzing the relationship between ethyl acetate production and the extracellular ethanol and acetic acid concentrations, we found that the highest amount of ethyl acetate was produced when the molar ratio of ethanol and acetic acid was 1:1. These results indicate that the ester production by Acetobacter sp. is mostly catalyzed by the intracellular esterase, esterase-1, with ethanol and acetic acid used as the substrates.
Collapse
Affiliation(s)
- Y Kashima
- Department of Fermentation Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | | | | | | | | | | | | |
Collapse
|
42
|
Kosugi A, Koizumi Y, Yanagida F, Udaka S. A permease exhibiting a dual role for lysine and biotin uptake in Saccharomyces cerevisiae. J Biosci Bioeng 2005; 89:90-3. [PMID: 16232706 DOI: 10.1016/s1389-1723(00)88058-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/1999] [Accepted: 10/07/1999] [Indexed: 11/20/2022]
Abstract
Among Saccharomyces cerevisiae strains each defective in one of 11 amino acid permeases, a lysine permease disruptant (DK) exhibited about 2-fold reductions in maximum cell density and fermentation ability compared to the parent in a synthetic medium. These unusual properties of DK were found to result from the requirement of biotin for growth, in contrast to the parent whose growth was not dependent on external biotin. The rate of 14C-labeled biotin uptake and the intracellular free biotin content of DK were 2-2.5 fold lower than in the parent. We suggest that lysine permease in S. cerevisiae has the ability to transport both lysine and biotin.
Collapse
Affiliation(s)
- A Kosugi
- Department of Fermentation Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | | | | | | |
Collapse
|
43
|
Kashima Y, Nakajima Y, Nakano T, Tayama K, Koizumi Y, Udaka S, Yanagida F. Cloning and characterization of ethanol-regulated esterase genes in Acetobacter pasteurianus. J Biosci Bioeng 2005; 87:19-27. [PMID: 16232420 DOI: 10.1016/s1389-1723(99)80003-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/1998] [Accepted: 09/30/1998] [Indexed: 11/25/2022]
Abstract
The esterase encoding genes, est1 and est2, were cloned from Acetobacter pasteurianus. Nucleotide sequence analysis of est1 revealed a gene of 954 bp, and est1 coded for an arylesterase with a molecular weight of 34863 Da consisting of 317 amino acids. The est2 gene contained an open reading frame composed of 1221 bp encoding an esterase with a molecular weight of 43389 Da consisting of 406 amino acids. The est1 gene showed some similarity, but the est2 gene showed no significant homology to other esterases reported in various microorganisms. Northern blot analysis of total RNA from A. pasteurianus revealed that transcription of the est1 gene was induced only when the cells were grown in a medium containing ethanol, and suggested that the est1 transcript is monocistronic. In contrast, transcription of the est2 gene was repressed in the presence of ethanol. In the absence of ethanol, expression of the est2-mRNA, capable of encoding a multiple number of proteins, was revealed by Northern blot analysis. In addition, deletion analysis indicated that the 5'-region of the est2 gene contained a cis-acting domain for est2 transcriptional regulation. Analysis of the est1 promoter using the chloramphenicol acetyltransferase gene as a reporter gene showed that the promoter within the 305-bp fragment upstream of the ATG initiation codon was responsible for the transcription in cells grown in the presence of ethanol. Primer extension analysis of est1-mRNA showed that the transcription initiation site was 49 bp upstream from the ATG initiation codon. The results of a gel mobility shift assay indicated that there is a regulatory protein related to est1 regulation, which may have some relation to the ethanol resistance of Acetobacter sp.
Collapse
Affiliation(s)
- Y Kashima
- Department of Fermentation Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502 Japan
| | | | | | | | | | | | | |
Collapse
|
44
|
Koizumi Y, Arai M, Tomoda H, Omura S. Oxaline, a fungal alkaloid, arrests the cell cycle in M phase by inhibition of tubulin polymerization. Biochim Biophys Acta 2004; 1693:47-55. [PMID: 15276324 DOI: 10.1016/j.bbamcr.2004.04.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2003] [Revised: 04/26/2004] [Accepted: 04/30/2004] [Indexed: 11/19/2022]
Abstract
Oxaline and neoxaline, fungal alkaloids, were found to inhibit cell proliferation and to induce cell cycle arrest at the G(2)/M phase in Jurkat cells. CBP501 (a peptide corresponding to amino acids 211-221 of Cdc25C phosphatase), which inhibits the G(2) checkpoint, did not affect the G(2)/M arrest caused by oxaline, suggesting that oxaline causes M phase arrest but not G(2) phase arrest. The Cdc2 phosphorylation level of oxaline-treated cell lysate was lower than that of the control cells, indicating that oxaline arrests the M phase. Oxaline disrupted cytoplasmic microtubule assembly in 3T3 cells. Furthermore, oxaline inhibited polymerization of microtubule protein and purified tubulin dose-dependently in vitro. In a binding competition assay, oxaline inhibited the binding of [(3)H]colchicine to tubulin, but not that of [(3)H]vinblastine. These results indicate that oxaline inhibits tubulin polymerization, resulting in cell cycle arrest at the M phase.
Collapse
Affiliation(s)
- Yukio Koizumi
- Kitasato Institute for Life Sciences and Graduate School of Infection Control Sciences, Kitasato University and The Kitasato Institute, 5-9-1 Shirokane, Minato, Tokyo 108-8641, Japan
| | | | | | | |
Collapse
|
45
|
Abstract
In a pooled analysis of two prospective studies with 35 004 Japanese women, green-tea intake was not associated with a lower risk of breast cancer (222 cases), the multivariate relative risk for women drinking ⩾5 cups compared with <1 cup per day being 0.84 (95% confidence interval 0.57–1.24, Trend P=0.69).
Collapse
Affiliation(s)
- Y Suzuki
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Y Tsubono
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan. E-mail:
| | - N Nakaya
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Y Suzuki
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Y Koizumi
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - I Tsuji
- Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| |
Collapse
|
46
|
Koizumi Y, Arai M, Tomoda H, Omura S. Fungerin, a Fungal Alkaloid, Arrests the Cell Cycle in M Phase by Inhibition of Microtubule Polymerization. J Antibiot (Tokyo) 2004; 57:415-20. [PMID: 15376553 DOI: 10.7164/antibiotics.57.415] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fungal alkaloid fungerin was found to arrest the cell cycle of Jurkat cells at the G2/M phase, then to induce apoptosis. Immunoblotting showed that fungerin led to hyperphosphorylation for Cdc25C and dephosphorylation of Cdc2, indicating that the compound arrests the cell cycle at the M phase. Moreover, fungerin inhibited the polymerization of microtubule proteins in vitro. It was concluded that fungerin arrests the cell cycle at the M phase through inhibition of microtubule polymerization.
Collapse
Affiliation(s)
- Yukio Koizumi
- Kitasato Institute for Life Sciences & Graduate School of Infection Control Sciences, Kitasato University and The Kitasato Institute, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | | | | | | |
Collapse
|
47
|
Abstract
The DNA-damaging agent bleomycin arrests the cell cycle at the G2 phase of Jurkat cells defective in the G1 checkpoint, and microtubule-acting colchicine arrests it at the M phase. Boromycin itself, an actinomycete metabolite, showed no effect on the cell cycle status of Jurkat cells at least up to 340 nM. However, the compound (3.4-340 nM) was found to abrogate bleomycin-induced G2 arrest even at 3.4 nM, resulting in a drastic decrease in cells at the G2 phase and increase in cells at the subG1 phase. On the other hand, boromycin did not show any effect on the colchicine-induced M phase arrest in Jurkat cells, nor on the cell cycle status of the bleomycin-treated or -untreated HUVEC, normal cells conserving both G1 and G2 checkpoints. Furthermore, boromycin potentiated anti-tumor activity of bleomycin in scid mice inoculated with Jurkat cells. These data suggest that boromycin disrupts the cell cycle at the G2 checkpoint of cancer cells selectively, leading to sensitization of cancer cells to anti-cancer reagents.
Collapse
Affiliation(s)
- Masayoshi Arai
- Kitasato Institute for Life Sciences & Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane Minato-ku, Tokyo 108-8641, Japan
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Kamijo Y, Koyama J, Oikawa S, Koizumi Y, Yokouchi K, Fukushima N, Moriizumi T. Regenerative process of the facial nerve: rate of regeneration of fibers and their bifurcations. Neurosci Res 2003; 46:135-43. [PMID: 12767476 DOI: 10.1016/s0168-0102(03)00035-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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: 11/29/2022]
Abstract
After the main trunk of the mouse facial nerve was injured by crushing, a fiber tracing method was used to quantify the facial motor neurons that extended regenerating nerve fibers to the specific site of the facial nerve branch. The total number of motor neurons retrogradely labeled with a fluorescent tracer, Fluoro-Gold (FG), were 0 on postsurgical days (PSDs) 1 and 2, 75+/-25 on PSD3, 264+/-21 on PSD4, 378+/-19 on PSD6, 428+/-19 on PSD8, 491+/-13 on PSD12 and 532+/-15 on PSD16. Assuming that the FG-positive neurons (535+/-11) of the control mice represent 100%, the FG-labeled neurons accounted for 0, 14, 49, 71, 80, 92 and 99% on the corresponding days. Two different fluorescent tracers were applied to the different facial nerve branches 16 days after facial nerve injuries. Double-labeled neurons were consistently found in the nerve-crushed facial nucleus (3.2%), and their number increased in the nerve-transected facial nucleus (12.2%). The present study indicates that the regenerating facial nerve consists of heterogeneous nerve fibers with varying growth rates and that excessive axonal branching occurs more frequently in the nerve-transected than in the nerve-crushed injuries.
Collapse
Affiliation(s)
- Y Kamijo
- Department of Anatomy, Shinshu University School of Medicine, Matsumoto 390-8621, Japan
| | | | | | | | | | | | | |
Collapse
|
49
|
Okumura R, Koizumi Y, Sekiya J. Synthesis of hydroxymethylglutathione from glutathione and L-serine catalyzed by carboxypeptidase Y. Biosci Biotechnol Biochem 2003; 67:434-7. [PMID: 12729016 DOI: 10.1271/bbb.67.434] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Hydroxymethylglutathione (gamma-L-glutamyl-L-cysteinyl-L-serine; hmGSH) occurs in many species belonging to the family Gramineae, but the biosynthetic pathway for hmGSH has not been identified. We found that carboxypeptidase Y (CPY), but not carboxypeptidase A, catalyzed hmGSH synthesis from glutathione and L-serine in vitro at acidic pH. CPY also catalyzed methylglutathione synthesis from glutathione and L-alanine. These findings suggested that a carboxypeptidase-like enzyme may be involved in hmGSH synthesis in vivo.
Collapse
Affiliation(s)
- Ryosuke Okumura
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | | | | |
Collapse
|
50
|
Abstract
OBJECTIVE It has been reported that the eye movements induced by off vertical axis rotation (OVAR) are composed of two components: a bias component (BIC) and a modulation component (MOC). It was suggested that the MOC compensates for changes in head orientation with respect to gravity and that the BIC is related to the velocity storage mechanism. However, the characteristics of the otolith organs remain obscure. In order to investigate these characteristics, we performed a 3D analysis of eye movements induced by human sinusoidal s-OVAR, and compared the result with that of eye movements induced by constant c-OVAR. MATERIAL AND METHODS Fifteen healthy human subjects participated in this study. OVAR stimulation was produced by rotation following tilt. After a 30 degrees tilt, the subject was rotated sinusoidally at 0.05 and 0.02 Hz at 50 degrees/s peak velocity. Eye movements were recorded using an infrared charge-coupled device camera, and the updated version of our standard computerized image recognition method was used to analyze them three-dimensionally. RESULTS The eye movements induced by s-OVAR consisted of two kinds of sine waves: low- and high-frequency components. The low-frequency component was related to the change in angular acceleration, and the eye movements were found to derive from the semicircular canals. In contrast, the high-frequency component was related to the change in head position, and the eye movements were found to derive from the otolith organs. CONCLUSION s-OVAR may prove to be a useful tool for simultaneously assessing the functions of both the otolith organs and the semicircular canals.
Collapse
Affiliation(s)
- Y Koizumi
- Department of Otolaryngology, Nippon Medical School, Tokyo, Japan
| | | | | | | |
Collapse
|