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Ando K, Shimomura A, Watanabe K, Kunihisa T, Teruya K, Shimizu C. 441P Malignant diseases diagnosed in people living with HIV in Japan. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.472] [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: 12/07/2022] Open
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Morioka S, Tsuzuki S, Suzuki M, Terada M, Akashi M, Osanai Y, Kuge C, Sanada M, Tanaka K, Maruki T, Takahashi K, Saito S, Hayakawa K, Teruya K, Hojo M, Ohmagari N. Post COVID-19 condition of the Omicron variant of SARS-CoV-2. J Infect Chemother 2022; 28:1546-1551. [PMID: 35963600 PMCID: PMC9365517 DOI: 10.1016/j.jiac.2022.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/18/2022] [Accepted: 08/04/2022] [Indexed: 12/12/2022]
Abstract
Objectives To investigate the prevalence of post coronavirus disease (COVID-19) condition of the Omicron variant in comparison to other strains. Study design A single-center cross-sectional study. Methods Patients who recovered from Omicron COVID-19 infection (Omicron group) were interviewed via telephone, and patients infected with other strains (control group) were surveyed via a self-reporting questionnaire. Data on patients’ characteristics, information regarding the acute-phase COVID-19, as well as presence and duration of COVID-19-related symptoms were obtained. Post COVID-19 condition in this study was defined as a symptom that lasted for at least 2 months, within 3 months of COVID-19 onset. We investigated and compared the prevalence of post COVID-19 condition in both groups after performing propensity score matching. Results We conducted interviews for 53 out of 128 patients with Omicron and obtained 502 responses in the control group. After matching cases with controls, 18 patients from both groups had improved covariate balance of the factors: older adult, female sex, obesity, and vaccination status. There were no significant differences in the prevalence of each post COVID-19 condition between the two groups. The number of patients with at least one post COVID-19 condition in the Omicron and control groups were 1 (5.6%) and 10 (55.6%) (p = 0.003), respectively. Conclusions The prevalence of post Omicron COVID-19 conditions was less than that of the other strains. Further research with a larger sample size is needed to investigate the precise epidemiology of post COVID-19 condition of Omicron, and its impact on health-related quality of life and social productivity.
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Affiliation(s)
- S Morioka
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Emerging and Reemerging Infectious Diseases, Graduate School of Medicine, Tohoku University, Sendai, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan.
| | - S Tsuzuki
- AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - M Suzuki
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Terada
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
| | - M Akashi
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - Y Osanai
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - C Kuge
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Sanada
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Tanaka
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - T Maruki
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Takahashi
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - S Saito
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Hayakawa
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - K Teruya
- AIDS Clinical Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - M Hojo
- Division of Respiratory Medicine, National Center for Global Health and Medicine Hospital, Tokyo, Japan
| | - N Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine Hospital, Tokyo, Japan
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Ogawa M, Udono M, Teruya K, Uehara N, Katakura Y. Exosomes Derived from Fisetin-Treated Keratinocytes Mediate Hair Growth Promotion. Nutrients 2021; 13:nu13062087. [PMID: 34207142 PMCID: PMC8234638 DOI: 10.3390/nu13062087] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/17/2022] Open
Abstract
Enhanced telomerase reverse transcriptase (TERT) levels in dermal keratinocytes can serve as a novel target for hair growth promotion. Previously, we identified fisetin using a system for screening food components that can activate the TERT promoter in HaCaT cells (keratinocytes). In the present study, we aimed to clarify the molecular basis of fisetin-induced hair growth promotion in mice. To this end, the dorsal skin of mice was treated with fisetin, and hair growth was evaluated 12 days after treatment. Histochemical analyses of fisetin-treated skin samples and HaCaT cells were performed to observe the effects of fisetin. The results showed that fisetin activated HaCaT cells by regulating the expression of various genes related to epidermogenesis, cell proliferation, hair follicle regulation, and hair cycle regulation. In addition, fisetin induced the secretion of exosomes from HaCaT cells, which activated β-catenin and mitochondria in hair follicle stem cells (HFSCs) and induced their proliferation. Moreover, these results revealed the existence of exosomes as the molecular basis of keratinocyte-HFSC interaction and showed that fisetin, along with its effects on keratinocytes, caused exosome secretion, thereby activating HFSCs. This is the first study to show that keratinocyte-derived exosomes can activate HFSCs and consequently induce hair growth.
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Affiliation(s)
- Mizuki Ogawa
- Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan; (M.O.); (K.T.)
| | - Miyako Udono
- Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan;
| | - Kiichiro Teruya
- Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan; (M.O.); (K.T.)
- Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan;
| | - Norihisa Uehara
- Department of Molecular Cell Biology and Oral Anatomy, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan;
| | - Yoshinori Katakura
- Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan; (M.O.); (K.T.)
- Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan;
- Correspondence: ; Tel.: +81-92-802-4727
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Teruya K, Kusumoto Y, Eto H, Nakamichi N, Shirahata S. Selective Suppression of Cell Growth and Programmed Cell Death-Ligand 1 Expression in HT1080 Fibrosarcoma Cells by Low Molecular Weight Fucoidan Extract. Mar Drugs 2019; 17:E421. [PMID: 31331053 PMCID: PMC6669552 DOI: 10.3390/md17070421] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/12/2019] [Accepted: 07/14/2019] [Indexed: 12/14/2022] Open
Abstract
Low molecular weight fucoidan extract (LMF), prepared by an abalone glycosidase digestion of a crude fucoidan extracted from Cladosiphon novae-caledoniae Kylin, exhibits various biological activities, including anticancer effect. Various cancers express programmed cell death-ligand 1 (PD-L1), which is known to play a significant role in evasion of the host immune surveillance system. PD-L1 is also expressed in many types of normal cells for self-protection. Previous research has revealed that selective inhibition of PD-L1 expressed in cancer cells is critical for successful cancer eradication. In the present study, we analyzed whether LMF could regulate PD-L1 expression in HT1080 fibrosarcoma cells. Our results demonstrated that LMF suppressed PD-L1/PD-L2 expression and the growth of HT1080 cancer cells and had no effect on the growth of normal TIG-1 cells. Thus, LMF differentially regulates PD-L1 expression in normal and cancer cells and could serve as an alternative complementary agent for treatment of cancers with high PD-L1 expression.
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Affiliation(s)
- Kiichiro Teruya
- Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Yoshihiro Kusumoto
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroshi Eto
- Daiichi Sangyo Co., Ltd., 6-7-2 Nishitenma, Kita-ku, Osaka 530-0047, Japan
| | - Noboru Nakamichi
- Daiichi Sangyo Co., Ltd., 6-7-2 Nishitenma, Kita-ku, Osaka 530-0047, Japan
| | - Sanetaka Shirahata
- Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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Takahashi H, Kawaguchi M, Kitamura K, Narumiya S, Kawamura M, Tengan I, Nishimoto S, Hanamure Y, Majima Y, Tsubura S, Teruya K, Shirahata S. An Exploratory Study on the Anti-inflammatory Effects of Fucoidan in Relation to Quality of Life in Advanced Cancer Patients. Integr Cancer Ther 2017. [PMID: 28627320 PMCID: PMC6041928 DOI: 10.1177/1534735417692097] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background. Conventional anticancer therapies still cause difficulties with selective eradication and accompanying side effects that reduce patients’ quality of life (QOL). Fucoidan is extracted from seaweeds and has already exhibited broad bioactivities, including anticancer and anti-inflammatory properties, in basic studies. It is expected to enhance therapeutic efficacy and minimize side effects in cancer patients; however, despite its potential benefits, there are very few clinical trials using fucoidans. Therefore, we performed an exploratory clinical study for advanced cancer patients to examine the efficacy of fucoidans, especially focusing on inflammation in relation to QOL scores. Methods. We conducted a prospective, open-label clinical study for advanced cancer patients using fucoidans via oral administration; 20 advanced cancer patients with metastases were recruited and were given 400 mL/d fucoidan (10 mg/mL) for at least 4 weeks. Inflammatory biomarkers, including high-sensitivity C-reactive protein and various cytokines, and QOL scores were monitored before treatment, after 2 weeks, and after 4 weeks of fucoidan ingestion. Results. The main proinflammatory cytokines, including interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α) were significantly reduced after 2 weeks of fucoidan ingestion. QOL scores, including fatigue, stayed almost stable without significant changes during the study period. The univariate and multivariate analyses revealed that the responsiveness of IL-1β was a significant independent prognostic factor. Conclusion. This is the first study providing evidence of the anti-inflammatory effects of fucoidans for advanced cancer patients. In future studies, larger blinded, controlled trials are required to establish the efficacy of fucoidan as supportive care for cancer patients, especially those undergoing chemotherapy.
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Affiliation(s)
- Hidenori Takahashi
- 1 University of the Ryukyus Hospital, Nakagami-gun, Okinawa, Japan.,2 Seren Clinic Fukuoka, Fukuoka, Japan.,3 Clinic Ginowan, Ginowan-shi, Okinawa, Japan
| | | | | | | | | | | | | | - Yasuo Hanamure
- 9 Hanamure Hospital, Ichikikushikino-shi, Kagoshima, Japan
| | - Yasuo Majima
- 10 Majima Digestive Organ Clinic, Kurume-shi, Fukuoka, Japan
| | - Shuichi Tsubura
- 11 Nippon Dental University School of Life Dentistry at Niigata, Hamaura-cho, Chuo-ku, Niigata, Japan
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Hamasaki T, Harada G, Nakamichi N, Kabayama S, Teruya K, Fugetsu B, Gong W, Sakata I, Shirahata S. Electrochemically reduced water exerts superior reactive oxygen species scavenging activity in HT1080 cells than the equivalent level of hydrogen-dissolved water. PLoS One 2017; 12:e0171192. [PMID: 28182635 PMCID: PMC5300231 DOI: 10.1371/journal.pone.0171192] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 01/18/2017] [Indexed: 12/12/2022] Open
Abstract
Electrochemically reduced water (ERW) is produced near a cathode during electrolysis and exhibits an alkaline pH, contains richly dissolved hydrogen, and contains a small amount of platinum nanoparticles. ERW has reactive oxygen species (ROS)-scavenging activity and recent studies demonstrated that hydrogen-dissolved water exhibits ROS-scavenging activity. Thus, the antioxidative capacity of ERW is postulated to be dependent on the presence of hydrogen levels; however, there is no report verifying the role of dissolved hydrogen in ERW. In this report, we clarify whether the responsive factor for antioxidative activity in ERW is dissolved hydrogen. The intracellular ROS scavenging activity of ERW and hydrogen-dissolved water was tested by both fluorescent stain method and immuno spin trapping assay. We confirm that ERW possessed electrolysis intensity-dependent intracellular ROS-scavenging activity, and ERW exerts significantly superior ROS-scavenging activity in HT1080 cells than the equivalent level of hydrogen-dissolved water. ERW retained its ROS-scavenging activity after removal of dissolved hydrogen, but lost its activity when autoclaved. An oxygen radical absorbance capacity assay, the 2,2-diphenyl-1-picrylhydrazyl assay and chemiluminescence assay could not detect radical-scavenging activity in both ERW and hydrogen-dissolved water. These results indicate that ERW contains electrolysis-dependent hydrogen and an additional antioxidative factor predicted to be platinum nanoparticles.
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Affiliation(s)
- Takeki Hamasaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Gakuro Harada
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Noboru Nakamichi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | | | - Kiichiro Teruya
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Bunshi Fugetsu
- Innovation Policy Research Center, IPRC, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Wei Gong
- Innovation Policy Research Center, IPRC, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Ichiro Sakata
- Policy Alternative Research Institute, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| | - Sanetaka Shirahata
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
- * E-mail:
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Kawabata Y, Nishihara GN, Yamaguchi T, Takebe T, Teruya K, Sato T, Soyano K. The effect of spine postures on the hydrodynamic drag in Epinephelus ongus larvae. J Fish Biol 2014; 85:1757-1765. [PMID: 25124030 DOI: 10.1111/jfb.12502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Accepted: 07/10/2014] [Indexed: 06/03/2023]
Abstract
Laboratory behavioural observation and computational fluid dynamics (CFD) analysis were conducted to examine whether the movement of the elongated dorsal and pelvic spines changed the hydrodynamic drag in white-streaked grouper Epinephelus ongus larvae. The behavioural observation in the tank revealed that the larvae extended the dorsal and pelvic spines during passive transport and retracted during swimming; the angles of the dorsal and pelvic spines in relation to the anteroposterior axis were larger during the passive transport (mean ± S.D. = 28.84 ± 14.27 and 20.35 ± 15.05°) than those during the swimming (mean ± S.D. = 2.59 ± 5.55 and 0.32 ± 6.49°). The CFD analysis indicated that the relative hydrodynamic drag acting on the larvae was approximately 1.25 times higher when the spines were extended (passive transport) than when the spines were retracted (swimming), suggesting that the E. ongus larvae have an ability to adjust their hydrodynamic drag depending on the behavioural context.
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Affiliation(s)
- Y Kawabata
- Institute for East China Sea Research, Nagasaki University, Nagasaki, 851-2213, Japan
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Hamasaki T, Nakamichi N, Teruya K, Shirahata S. Removal efficiency of radioactive cesium and iodine ions by a flow-type apparatus designed for electrochemically reduced water production. PLoS One 2014; 9:e102218. [PMID: 25029447 PMCID: PMC4100768 DOI: 10.1371/journal.pone.0102218] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 06/17/2014] [Indexed: 01/18/2023] Open
Abstract
The Fukushima Daiichi Nuclear Power Plant accident on March 11, 2011 attracted people’s attention, with anxiety over possible radiation hazards. Immediate and long-term concerns are around protection from external and internal exposure by the liberated radionuclides. In particular, residents living in the affected regions are most concerned about ingesting contaminated foodstuffs, including drinking water. Efficient removal of radionuclides from rainwater and drinking water has been reported using several pot-type filtration devices. A currently used flow-type test apparatus is expected to simultaneously provide radionuclide elimination prior to ingestion and protection from internal exposure by accidental ingestion of radionuclides through the use of a micro-carbon carboxymethyl cartridge unit and an electrochemically reduced water production unit, respectively. However, the removability of radionuclides from contaminated tap water has not been tested to date. Thus, the current research was undertaken to assess the capability of the apparatus to remove radionuclides from artificially contaminated tap water. The results presented here demonstrate that the apparatus can reduce radioactivity levels to below the detection limit in applied tap water containing either 300 Bq/kg of 137Cs or 150 Bq/kg of 125I. The apparatus had a removal efficiency of over 90% for all concentration ranges of radio–cesium and –iodine tested. The results showing efficient radionuclide removability, together with previous studies on molecular hydrogen and platinum nanoparticles as reactive oxygen species scavengers, strongly suggest that the test apparatus has the potential to offer maximum safety against radionuclide-contaminated foodstuffs, including drinking water.
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Affiliation(s)
- Takeki Hamasaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Noboru Nakamichi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Kiichiro Teruya
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Sanetaka Shirahata
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka, Japan
- * E-mail:
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Aiba Y, Yamashita M, Katakura Y, Furukawa Y, Matsumoto SE, Tomimatsu K, Teruya K, Shirahata S. Identification of Genes Involved in the Suppression of Antibody Production from Human Peripheral Blood Lymphocytes. Biosci Biotechnol Biochem 2014; 70:966-70. [PMID: 16636465 DOI: 10.1271/bbb.70.966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Pretreatment with L-leucyl-L-leucine methyl ester (LLME) is a prerequisite for peripheral blood mononuclear cells (PBMCs) to produce antigen-specific antibodies when sensitized with an antigen. Little information, however, is available regarding the mechanisms involved in LLME-induced augmentation of antibody production from PBMCs that are antigen sensitized. In the present study, we attempted to identify the genes involved in the suppression of antibody production from PBMCs that was not treated with LLME, but sensitized with an antigen. Using subtractive screening, we obtained 63 independent genes, including 17 EST genes, that are specific for LLME-nontreated PBMC. Among these genes, the expression of heavy chain ferritin (H-ferritin), CC chemokine ligand 18 (CCL18), and matrix metalloproteinase 12 (MMP12) were augmented in LLME-nontreated PBMCs, suggesting that inflammatory factors might be involved in the suppression of antibody production in LLME-nontreated PBMCs.
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Affiliation(s)
- Yoshihiro Aiba
- Graduate School of Systems Life Sciences, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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Jung YS, Matsumoto SE, Yamashita M, Tomimatsu K, Teruya K, Katakura Y, Shirahata S. Propionibacterium AcnesActs as an Adjuvant inin VitroImmunization of Human Peripheral Blood Mononuclear Cells. Biosci Biotechnol Biochem 2014; 71:1963-9. [PMID: 17690460 DOI: 10.1271/bbb.70159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We have established an in vitro immunization protocol whereby human peripheral blood mononuclear cells (PBMCs) are initially treated with L-leucyl-L-leucine methyl ester (LLME) and subsequently sensitized with antigen in the presence of interleukin (IL)-2, IL-4, and adjuvant. This protocol resulted in the production of antigen-specific antibodies. PBMCs are potentiated to react with exogenous antigens upon treatment with LLME. We are using this system to investigate the immunomodulatory activity of additives. In the present study, we aimed to evaluate the immunomodulatory activity of Propionibacterium acnes (P. acnes), which is known to exhibit various immunomodulatory effects in murine models, using this in vitro immunization protocol. P. acnes was found to augment the production of antigen-specific antibodies by PBMC, possibly through increased production of inflammatory cytokines and/or increased T-B cell interaction. P. acnes hence appears to act as an adjuvant in the antibody response in in vitro immunization.
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Affiliation(s)
- Yeon Suk Jung
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, Hakozaki, Fukuoka, Japan
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Saeki H, Ito T, Hayashi M, Fukuchi O, Umezawa Y, Nobeyama Y, Teruya K, Nakagawa H. Successful treatment of ustekinumab in a severe psoriasis patient with human immunodeficiency virus infection. J Eur Acad Dermatol Venereol 2014; 29:1653-5. [DOI: 10.1111/jdv.12531] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/28/2014] [Indexed: 12/01/2022]
Affiliation(s)
- H. Saeki
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - T. Ito
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - M. Hayashi
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - O. Fukuchi
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - Y. Umezawa
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - Y. Nobeyama
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
| | - K. Teruya
- AIDS Clinical Center; National Center for Global Health and Medicine; Tokyo Japan
| | - H. Nakagawa
- Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
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Asayama N, Nagata N, Shimbo T, Nishimura S, Igari T, Akiyama J, Ohmagari N, Hamada Y, Nishijima T, Yazaki H, Teruya K, Oka S, Uemura N. Relationship between clinical factors and severity of esophageal candidiasis according to Kodsi's classification. Dis Esophagus 2014; 27:214-9. [PMID: 23826847 DOI: 10.1111/dote.12102] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Severe Candida esophagitis (CE) may lead to development of strictures, hemorrhage, esophagotracheal fistula, and a consequent decrease in quality of life. Although the severity of CE has been classified based on macroscopic findings on endoscopy, the clinical significance remains unknown. The aim of the study was to elucidate the predictive clinical factors for endoscopic severity of CE. Patients who underwent upper endoscopy and answered questionnaires were prospectively enrolled. Smoking, alcohol, human immunodeficiency virus (HIV) infection, diabetes mellitus, chronic renal failure, liver cirrhosis, systemic steroids use, proton pump inhibitor use, H2 blocker use, and gastrointestinal (GI) symptoms were assessed on the same day of endoscopy. GI symptoms including epigastric pain, heartburn, reflux, hunger cramps, nausea, dysphagia, and odynophagia were assessed on a 7-point Likert scale. Endoscopic severity was classified as mild (Kodsi's grade I/II) or severe (grade III/IV). Of 1855 patients, 71 (3.8%) were diagnosed with CE (mild, n = 48; severe, n = 23). In the CE patients, 50.0% (24/48) in the mild group and 23.1% (6/23) in the severe group did not have any GI symptoms. In HIV-infected patients (n = 17), a significant correlation was found between endoscopic severity and declining CD4 cell count (Spearman's rho = -0.90; P < 0.01). Multivariate analysis revealed that GI symptoms (odds ratio [OR], 3.32) and HIV infection (OR, 3.81) were independently associated with severe CE. Patients in the severe group experienced more epigastric pain (P = 0.02), reflux symptoms (P = 0.04), dysphagia (P = 0.05), and odynophagia (P < 0.01) than those in the mild group. Of the GI symptoms, odynophagia was independently associated with severe CE (OR 9.62, P = 0.02). In conclusion, the prevalence of CE in adults who underwent endoscopy was 3.8%. Silent CE was found in both mild and severe cases. Endoscopic severity was associated with characteristic GI symptoms and comorbidity of HIV infection. A decline in immune function correlated with CE disease progression.
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Affiliation(s)
- N Asayama
- Department of Gastroenterology and Hepatology, National Center for Global Health and Medicine, Tokyo, Japan
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Hamasaki T, Kinjyo T, Nakanishi H, Teruya K, Kabayama S, Shirahata S. The combined use of platinum nanoparticles and hydrogen molecules induces caspase-dependent apoptosis. BMC Proc 2013. [PMCID: PMC3980909 DOI: 10.1186/1753-6561-7-s6-p109] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Shirahata S, Zhang Z, Yoshida T, Eto H, Teruya K. Fucoidan extract enhances the anti-cancer activity of chemotherapeutic agents in breast cancer cells. BMC Proc 2013. [PMCID: PMC3980363 DOI: 10.1186/1753-6561-7-s6-p70] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Kinjo T, Hamasaki T, Yan H, Nakanishi H, Yamakawa T, Teruya K, Kabayama S, Shirahata S. Enhancement mechanism of antioxidant enzyme gene expression by hydrogen molecules. BMC Proc 2013. [PMCID: PMC3980712 DOI: 10.1186/1753-6561-7-s6-p76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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17
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Tomimatsu K, Matsumoto SE, Tanaka H, Yamashita M, Nakanishi H, Teruya K, Kazuno S, Kinjo T, Hamasaki T, Kusumoto KI, Kabayama S, Katakura Y, Shirahata S. A rapid screening and production method using a novel mammalian cell display to isolate human monoclonal antibodies. Biochem Biophys Res Commun 2013; 441:59-64. [DOI: 10.1016/j.bbrc.2013.10.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 10/04/2013] [Indexed: 11/29/2022]
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Honda H, Gatanaga H, Aoki T, Watanabe K, Yazaki H, Tanuma J, Tsukada K, Honda M, Teruya K, Kikuchi Y, Oka S. Raltegravir can be used safely in HIV-1-infected patients treated with warfarin. Int J STD AIDS 2013; 23:903-4. [PMID: 23258834 DOI: 10.1258/ijsa.2012.012085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Drug co-administration often affects the patient response to warfarin through various mechanisms. We describe here five HIV-1-infected patients on treatment with warfarin in whom the use of raltegravir was associated with a favourable outcome.
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Affiliation(s)
- H Honda
- AIDS Clinical Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku Tokyo 162-8655, Japan.
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Zhang Z, Teruya K, Yoshida T, Eto H, Shirahata S. Fucoidan extract enhances the anti-cancer activity of chemotherapeutic agents in MDA-MB-231 and MCF-7 breast cancer cells. Mar Drugs 2013; 11:81-98. [PMID: 23303302 PMCID: PMC3564159 DOI: 10.3390/md11010081] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [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: 11/12/2012] [Revised: 12/13/2012] [Accepted: 12/14/2012] [Indexed: 12/21/2022] Open
Abstract
Fucoidan, a fucose-rich polysaccharide isolated from brown alga, is currently under investigation as a new anti-cancer compound. In the present study, fucoidan extract (FE) from Cladosiphon navae-caledoniae Kylin was prepared by enzymatic digestion. We investigated whether a combination of FE with cisplatin, tamoxifen or paclitaxel had the potential to improve the therapeutic efficacy of cancer treatment. These co-treatments significantly induced cell growth inhibition, apoptosis, as well as cell cycle modifications in MDA-MB-231 and MCF-7 cells. FE enhanced apoptosis in cancer cells that responded to treatment with three chemotherapeutic drugs with downregulation of the anti-apoptotic proteins Bcl-xL and Mcl-1. The combination treatments led to an obvious decrease in the phosphorylation of ERK and Akt in MDA-MB-231 cells, but increased the phosphorylation of ERK in MCF-7 cells. In addition, we observed that combination treatments enhanced intracellular ROS levels and reduced glutathione (GSH) levels in breast cancer cells, suggesting that induction of oxidative stress was an important event in the cell death induced by the combination treatments.
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Affiliation(s)
- Zhongyuan Zhang
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; E-Mails: (Z.Z.); (S.S.)
| | - Kiichiro Teruya
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; E-Mails: (Z.Z.); (S.S.)
- Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Toshihiro Yoshida
- Yoshida Clinic, 6-18-27 Higashi Mikuni, Yodogawa-ku, Osaka 532-0002, Japan; E-Mail:
| | - Hiroshi Eto
- Daiichi Sangyo Co., Ltd., 6-7-2 Nishitenman, Kita-ku, Osaka 530-0037, Japan; E-Mail:
| | - Sanetaka Shirahata
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; E-Mails: (Z.Z.); (S.S.)
- Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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20
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Teruya K, Myojin-Maekawa Y, Shimamoto F, Watanabe H, Nakamichi N, Tokumaru K, Tokumaru S, Shirahata S. Protective effects of the fermented milk Kefir on X-ray irradiation-induced intestinal damage in B6C3F1 mice. Biol Pharm Bull 2012; 36:352-9. [PMID: 23229389 DOI: 10.1248/bpb.b12-00709] [Citation(s) in RCA: 9] [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] [Indexed: 02/01/2023]
Abstract
Gastrointestinal damage associated with radiation therapy is currently an inevitable outcome. The protective effect of Kefir was assessed for its usefulness against radiation-induced gastrointestinal damage. A Kefir supernatant was diluted by 2- or 10-fold and administered for 1 week prior to 8 Gray (Gy) X-ray irradiation at a dose rate of 2 Gy/min, with an additional 15 d of administration post-irradiation. The survival rate of control mice with normal drinking water dropped to 70% on days 4 through 9 post-irradiation. On the other hand, 100% of mice in the 10- and 2-fold-diluted Kefir groups survived up to day 9 post-irradiation (p<0.05 and p<0.01, respectively). Examinations for crypt regeneration against 8, 10 and 12 Gy irradiation at a dose rate of 4 Gy/min revealed that the crypt number was significantly increased in the mice administered both diluted Kefir solutions (p<0.01 for each). Histological and immunohistochemical examinations revealed that the diluted Kefir solutions protected the crypts from radiation, and promoted crypt regeneration. In addition, lyophilized Kefir powder was found to significantly recover the testis weights (p<0.05), but had no effects on the body and spleen weights, after 8 Gy irradiation. These findings suggest that Kefir could be a promising candidate as a radiation-protective agent.
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Affiliation(s)
- Kiichiro Teruya
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812–8581, Japan.
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Ichikawa A, Katakura Y, Teruya K, Hashizume S, Shirahata S. In vitro immunization of human peripheral blood lymphocytes: establishment of B cell lines secreting IgM specific for cholera toxin B subunit from lymphocytes stimulated with IL-2 and IL-4. Cytotechnology 2012; 31:133-41. [PMID: 19003133 DOI: 10.1023/a:1008063903946] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In vitro immunization (IVI) techniques have a great potential in the production of human monoclonal antibodies (MAbs) against various antigens. An IVI method of human peripheral blood lymphocytes (PBL) has been developed with a human lung adenocarcinoma cell line in our laboratory. Although several cancer specific human MAbs were successfully generated by using this IVI method, it was not available for soluble antigens, which prompted us to improve the method for generation of human MAbs against soluble antigens. IVI with soluble antigens was effectively caused by the addition of muramyl dipeptides, interleukin-2 and interleukin-4. It was found that the difference of sensitivity of lymphocytes depending upon donors could be overcome by finding the optimal concentrations of IL-2 and IL-4. IVI of human PBL was performed with cholera toxin B subunit (CTB) and the immunized B cells were transformed by Epstein-Barr virus. Anti-CTB antibody was detected using an indirect ELISA. B cells producing anti-CTB antibodies were directly cloned by a soft agar cloning method.
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Katakura Y, Seto P, Miura T, Ohashi H, Teruya K, Shirahata S. Productivity enhancement of recombinant protein in CHO cells via specific promoter activation by oncogenes. Cytotechnology 2012; 31:103-9. [PMID: 19003130 DOI: 10.1023/a:1008048928053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To construct a recombinant protein highly producing cell lines, we have previously developed the Oncogene Activated Production (OAP) system by using BHK-21 cells. Here we verified the availability of the OAP system in CHO cells. We firstly generated 'primed' ras amplified CHO cells, ras clone I, by introducing human c-Ha-ras oncogene into CHO cells. This ras clone I enables quick and easy establishment of recombinant protein hyper producing cell lines by introduction reporter gene of interest. Then we generated I13 by introducing human interleukin 6 (hIL-6) gene as a reporter gene, which showed enhanced productivity rate as compared to A7 established by conventional method. Furthermore, we found that hIL-6 production level of I13 was slightly improved by raising the CO(2) concentration from 5 to 8% possibly because of the enhanced growth rate. We further introduced the E1A oncogene, which has been shown to have a synergistic effect on the recombinant protein production of the ras-amplified BHK-21 cells, then evaluated the productivity. When culture in 5% CO(2) condition, only the slight effect can be seen. However when cultured in 8% CO(2) condition, not only cell number, but also productivity increased significantly, resulted in great augmentation of hIL-6 production, maximum production being 88.6 mug/ml/3 days. This study demonstrates that recombinant protein production level reached commercially desirable level by utilizing our OAP system in CHO cells and optimizing the culture condition.
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Kinjo T, Ye J, Yan H, Hamasaki T, Nakanishi H, Toh K, Nakamichi N, Kabayama S, Teruya K, Shirahata S. Suppressive effects of electrochemically reduced water on matrix metalloproteinase-2 activities and in vitro invasion of human fibrosarcoma HT1080 cells. Cytotechnology 2012; 64:357-71. [PMID: 22695858 DOI: 10.1007/s10616-012-9469-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 05/21/2012] [Indexed: 02/06/2023] Open
Abstract
It has been demonstrated that hydrogen peroxide (H(2)O(2)) is directly associated with elevated matrix metalloproteinase-2 (MMP-2) expression in several cell lines. Electrochemically reduced water (ERW), produced near the cathode during electrolysis, and scavenges intracellular H(2)O(2) in human fibrosarcoma HT1080 cells. RT-PCR and zymography analyses revealed that when HT1080 cells were treated with ERW, the gene expression of MMP-2 and membrane type 1 MMP and activation of MMP-2 was repressed, resulting in decreased invasion of the cells into matrigel. ERW also inhibited H(2)O(2)-induced MMP-2 upregulation. To investigate signal transduction involved in MMP-2 downregulation, mitogen-activated protein kinase (MAPK)-specific inhibitors, SB203580 (p38 MAPK inhibitor), PD98059 (MAPK/extracellular regulated kinase kinase 1 inhibitor) and c-Jun NH(2)-terminal kinase inhibitor II, were used to block the MAPK signal cascade. MMP-2 gene expression was only inhibited by SB203580 treatment, suggesting a pivotal role of p38 MAPK in regulation of MMP-2 gene expression. Western blot analysis showed that ERW downregulated the phosphorylation of p38 both in H(2)O(2)-treated and untreated HT1080 cells. These results indicate that the inhibitory effect of ERW on tumor invasion is due to, at least in part, its antioxidative effect.
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Affiliation(s)
- Tomoya Kinjo
- Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
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Li Y, Hamasaki T, Teruya K, Nakamichi N, Gadek Z, Kashiwagi T, Yan H, Kinjo T, Komatsu T, Ishii Y, Shirahata S. Suppressive effects of natural reduced waters on alloxan-induced apoptosis and type 1 diabetes mellitus. Cytotechnology 2011; 64:281-97. [PMID: 22143345 PMCID: PMC3386384 DOI: 10.1007/s10616-011-9414-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 11/18/2011] [Indexed: 11/29/2022] Open
Abstract
Insulin-producing cells express limited activities of anti-oxidative enzymes. Therefore, reactive oxygen species (ROS) produced in these cells play a crucial role in cytotoxic effects. Furthermore, diabetes mellitus (DM) development is closely linked to higher ROS levels in insulin-producing cells. Hita Tenryosui Water® (Hita T. W., Hita, Japan) and Nordenau water (Nord. W., Nordenau, Germany), referred to as natural reduced waters (NRWs), scavenge ROS in cultured cells, and therefore, might be a possibility as an alternative to conventional pharmacological agents against DM. Therefore, this study aimed to investigate the role of NRWs in alloxan (ALX)-induced β-cell apoptosis as well as in ALX-induced diabetic mice. NRWs equally suppressed DNA fragmentation levels. Hita T. W. and Nord. W. ameliorated ALX-induced sub-G1 phase production from approximately 40% of control levels to 8.5 and 11.8%, respectively. NRWs restored serum insulin levels (p < 0.01) and reduced blood glucose levels (p < 0.01) in ALX-induced mice. Hita T. W. restored tissue superoxide dismutase (SOD) (p < 0.05) activity but not tissue catalase activity. Hita T. W. did not elevate SOD or catalase activity in HIT-T15 cells. Nord. W. restored SOD (p < 0.05) and catalase (p < 0.05) activity in both cultured cells and pancreatic tissue to normal levels. Even though variable efficacies were observed between Hita T. W. and Nord. W., both waters suppressed ALX-induced DM development in CD-1 male mice by administering NRWs for 8 weeks. Our results suggest that Hita T. W. and Nord. W. protect against ALX-induced β-cell apoptosis, and prevent the development of ALX-induced DM in experimental animals by regulating ALX-derived ROS generation and elevating anti-oxidative enzymes. Therefore, the two NRWs tested here are promising candidates for the prevention of DM development.
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Affiliation(s)
- Yuping Li
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, 812-8581, Japan
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Shirahata S, Hamasaki T, Haramaki K, Nakamura T, Abe M, Yan H, Kinjo T, Nakamichi N, Kabayama S, Teruya K. Anti-diabetes effect of water containing hydrogen molecule and Pt nanoparticles. BMC Proc 2011; 5 Suppl 8:P18. [PMID: 22373056 PMCID: PMC3284969 DOI: 10.1186/1753-6561-5-s8-p18] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Sanetaka Shirahata
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan ; Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Takeki Hamasaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Keisuke Haramaki
- Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Takuro Nakamura
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Masumi Abe
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hanxu Yan
- Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Tomoya Kinjo
- Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Noboru Nakamichi
- Nihon Trim Co. Ltd., 1-8-34 Oyodonaka, Kita-ku, Osaka 531-0076, Japan
| | - Shigeru Kabayama
- Nihon Trim Co. Ltd., 1-8-34 Oyodonaka, Kita-ku, Osaka 531-0076, Japan
| | - Kiichiro Teruya
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan ; Division of Life Engineering, Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Yan H, Kashiwaki T, Hamasaki T, Kinjo T, Teruya K, Kabayama S, Shirahata S. The neuroprotective effects of electrolyzed reduced water and its model water containing molecular hydrogen and Pt nanoparticles. BMC Proc 2011; 5 Suppl 8:P69. [PMID: 22373490 PMCID: PMC3285010 DOI: 10.1186/1753-6561-5-s8-p69] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Hanxu Yan
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Taichi Kashiwaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan
| | - Takeki Hamasaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan
| | - Tomoya Kinjo
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kiichiro Teruya
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan ; Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan
| | - Shigeru Kabayama
- Nihon Trim Co. Ltd., 1-8-34 Oyodonaka, Kita-ku, Osaka 531-0076, Japan
| | - Sanetaka Shirahata
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan ; Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan
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Zhang Z, Teruya K, Eto H, Shirahata S. Fucoidan extract induces apoptosis in MCF-7 cells via a mechanism involving the ROS-dependent JNK activation and mitochondria-mediated pathways. PLoS One 2011; 6:e27441. [PMID: 22096572 PMCID: PMC3214060 DOI: 10.1371/journal.pone.0027441] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 10/17/2011] [Indexed: 01/09/2023] Open
Abstract
Background Fucoidan extract (FE), an enzymatically digested compound with a low molecular weight, is extracted from brown seaweed. As a natural compound with various actions, FE is attractive, especially in Asian countries, for improving the therapeutic efficacy and safety of cancer treatment. The present study was carried out to investigate the anti-tumor properties of FE in human carcinoma cells and further examine the underlying mechanisms of its activities. Methodology/Principal Finding FE inhibits the growth of MCF-7, MDA-MB-231, HeLa, and HT1080 cells. FE-mediated apoptosis in MCF-7 cancer cells is accompanied by DNA fragmentation, nuclear condensation, and phosphatidylserine exposure. FE induces mitochondrial membrane permeabilization (MMP) through loss of mitochondrial membrane potential (ΔΨm) and regulation of the expression of Bcl-2 family members. Release of apoptosis-inducing factor (AIF) and cytochrome c precedes MMP. AIF release causes DNA fragmentation, the final stage of apoptosis, via a caspase-independent mitochondrial pathway. Additionally, FE was found to induce phosphorylation of c-Jun N-terminal kinase (JNK), p38, and extracellular signal-regulated kinase (ERK) 1/2, and apoptosis was found to be attenuated by inhibition of JNK. Furthermore, FE-mediated apoptosis was found to involve the generation of reactive oxygen species (ROS), which are responsible for the decrease of ΔΨm and phosphorylation of JNK, p38, and ERK1/2 kinases. Conclusions/Significance These data suggest that FE activates a caspase-independent apoptotic pathway in MCF-7 cancer cells through activation of ROS-mediated MAP kinases and regulation of the Bcl-2 family protein-mediated mitochondrial pathway. They also provide evidence that FE deserves further investigation as a natural anticancer and cancer preventive agent.
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Affiliation(s)
- Zhongyuan Zhang
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
| | - Kiichiro Teruya
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
- Faculty of Agriculture, Kyushu University, Fukuoka, Japan
- * E-mail:
| | | | - Sanetaka Shirahata
- Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
- Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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Li Y, Nishimura T, Teruya K, Maki T, Komatsu T, Hamasaki T, Kashiwagi T, Kabayama S, Shim SY, Katakura Y, Osada K, Kawahara T, Otsubo K, Morisawa S, Ishii Y, Gadek Z, Shirahata S. Protective mechanism of reduced water against alloxan-induced pancreatic beta-cell damage: Scavenging effect against reactive oxygen species. Cytotechnology 2011; 40:139-49. [PMID: 19003114 DOI: 10.1023/a:1023936421448] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Reactive oxygen species (ROS) cause irreversible damage to biological macromolecules, resulting in many diseases. Reduced water (RW) such as hydrogen-rich electrolyzed reduced water and natural reduced waters like Hita Tenryosui water in Japan and Nordenau water in Germany that are known to improve various diseases, could protect a hamster pancreatic beta cell line, HIT-T15 from alloxan-induced cell damage. Alloxan, a diabetogenic compound, is used to induce type 1 diabetes mellitus in animals. Its diabetogenic effect is exerted via the production of ROS. Alloxan-treated HIT-T15 cells exhibited lowered viability, increased intracellular ROS levels, elevated cytosolic free Ca(2+) concentration, DNA fragmentation, decreased intracellular ATP levels and lowering of glucose-stimulated release of insulin. RW completely prevented the generation of alloxan-induced ROS, increase of cytosolic Ca(2+) concentration, decrease of intracellular ATP level, and lowering of glucose-stimulated insulin release, and strongly blocked DNA fragmentation, partially suppressing the lowering of viability of alloxan-treated cells. Intracellular ATP levels and glucose-stimulated insulin secretion were increased by RW to 2-3.5 times and 2-4 times, respectively, suggesting that RW enhances the glucose-sensitivity and glucose response of beta-cells. The protective activity of RW was stable at 4 degrees C for over a month, but was lost by autoclaving. These results suggest that RW protects pancreatic beta-cells from alloxan-induced cell damage by preventing alloxan-derived ROS generation. RW may be useful in preventing alloxan-induced type 1-diabetes mellitus.
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Affiliation(s)
- Yuping Li
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, Japan
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Teruya K, Yamashita M, Tominaga R, Nagira T, Shim SY, Katakura Y, Tokumaru S, Tokumaru K, Barnes D, Shirahata S. Fermented milk, Kefram-Kefir enhances glucose uptake into insulin-responsive muscle cells. Cytotechnology 2011; 40:107-16. [PMID: 19003111 DOI: 10.1023/a:1023926407877] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Diminution of insulin-responses in the target organ is the primary cause of non-insulin dependent diabetes mellitus (NIDDM).It is thought to be correlated to the excessive production of reactive oxygen species (ROS). In this article, we attempted to evaluate whether fermented milk, Kefram-Kefir known as an antioxidant, reduces the cellular ROS levels and can stimulate the glucose uptake in L6 skeletal muscle cells. Water-soluble or chloroform/methanol-extracted fractions from Kefram-Kefir were examined to evaluate the glucose uptake ability of L6 myotubes.As a result, the water-soluble fraction augmented the uptake of glucose in L6 myotubes both in the presence and absence of insulin stimulation. Estimation of intracellular ROS level revealed that the water-soluble fraction of Kefram-Kefir reduced the intracellular ROS level on both the undifferentiated and differentiated L6 cells. Especially, glucose uptake was augmented up to six times with the addition of water-soluble fraction in the insulin-stimulated L6 myotubes. Glucose transport determination revealed that the active agent in Kefram-Kefir was resistant to autoclave and stable in pH range from 4 to 10, and the small molecule below the molecular weight of 1000. Furthermore, this augmentation was inhibited in the presence of phosphatidylinositol 3-kinase (PI 3-kinase) inhibitor wortmannin. Considering together with the reports that PI 3-kinase is locatedin the insulin signaling pathway and the participation in the translocation of glucose transporter 4 to the cell membrane, it is suggested that the water-soluble fraction of Kefram-Kefir activates PI 3-kinase or other upstream molecules in the insulin signaling pathway, which resulted in the augmentation of glucose uptake and its specific inhibition by wortmannin.
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Affiliation(s)
- Kiichiro Teruya
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan,
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Ichikawa A, Shim SY, Katakura Y, Teruya K, Hashizume S, Shirahata S. Molecular analysis of cross-reactive human monoclonal antibody AE6F4 generated by in vitro immunization: Epitope mapping of AE6F4 antibody on 14-3-3 family proteins and cytokeratin 8. Cytotechnology 2011; 36:101-7. [PMID: 19003320 DOI: 10.1023/a:1014060113186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We reported previously that adenocarcinoma-reactive human monoclonal antibody AE6F4, which had been generated by in vitro immunization method, recognizes both 14-3-3protein and cytokeratin 8 (CK8). In this study, to analyze the cross-reactivity of AE6F4 antibody, epitopes of AE6F4 antibody on 14-3-3 proteins and CK8 were studied by using synthetic linear peptide scanning technology. To determine the locations of B cell epitope, 48 and 95 of decapeptides covering the entire 14-3-3 proteins and CK8, respectively,were synthesized and binding to AE6F4 antibody was examined by ELISA. The AE6F4 antibody was strongly reactive to peptides containing amino acid sequences TLWTSDTQGD in 14-3-3 proteins and INFLRQLYEE in CK8. These results indicate that AE6F4 antibody can recognize the different peptide sequences in 14-3-3 proteins and CK8.
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Affiliation(s)
- A Ichikawa
- Division of Medical Devices, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan
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Shim SY, Katakura Y, Ichikawa A, Teruya K, Matsuda T, Shirahata S. Epitope analysis of human monoclonal antibody specific for rice allergenic protein generated by in vitro immunization. Cytotechnology 2011; 36:109-15. [PMID: 19003321 DOI: 10.1023/a:1014012214095] [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: 11/12/2022] Open
Abstract
We previously established an in vitro immunization protocol for generating antigen specific human monoclonal antibodies (mAbs). In vitro immunization was performed against the soluble protein of rice allergenic protein (RA), resulting in the generation of three B cell clones, AC7-1/F9, CB7-1/E2 and CB7-8/F5, all of which produce a RA-specific human monoclonal IgM antibody. We attempted to map the epitope regions recognized by thesem Abs to characterize their specificities. We performed two rounds of epitope mapping, rough mapping using 10-mer peptides covering the full-length RA with 5 amino acids overlapping, and fine mapping using 8-mer peptides covering the putative epitope regions from the rough mapping with 1amino acid overlapping. As a result of the fine mapping,we identified the epitope regions of these three mAbs as(45)QVWQDCCRQ(54)L, (56)AVDDGWCRCGA(67)L and(91)FPGCRRG(98)D on the RA molecule and found to be identical. Furthermore, we determined the putative core epitope regions, which are critical for mAb binding to each region, (47)WQDCC(52)R and (60)GWC(63)R. The information about the epitope region on the RA molecule,which might trigger the allergenic response, would be useful to establish a specific immunotherapy against rice allergy.
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Affiliation(s)
- S Y Shim
- Department of Genetic Resources Technology, Kyushu University, Fukuoka, 812-8581, Japan
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Ye J, Li Y, Teruya K, Katakura Y, Ichikawa A, Eto H, Hosoi M, Hosoi M, Nishimoto S, Shirahata S. Enzyme-digested Fucoidan Extracts Derived from Seaweed Mozuku of Cladosiphon novae-caledoniae kylin Inhibit Invasion and Angiogenesis of Tumor Cells. Cytotechnology 2011; 47:117-26. [PMID: 19003051 DOI: 10.1007/s10616-005-3761-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Accepted: 03/04/2005] [Indexed: 10/25/2022] Open
Abstract
Fucoidan is a uniquely-structured sulfated polysaccharide found in the cell walls of several types of brown seaweed that has recently, especially as enzyme-digested fucoidan extract, attracted a lot attention due to its anti-tumor potential. In this study, we evaluated the effects of enzyme-digested fucoidan extracts prepared from seaweed Mozuku of Cladosiphon novae-caledoniae kylin on in vitro invasion and angiogenesis abilities of human tumor cells. First, we evaluated the effect of the fucoidan extracts on oxidative stress of tumor cells, and demonstrated that intracellular H(2)O(2) level and released H(2)O(2) from tumor cells were both greatly repressed upon the treatment with the fucoidan extracts, suggesting that fucoidan extracts ameliorate oxidative stress of tumor cells. Next, we tested for the effects of fucoidan extracts on invasion ability of human fibrosarcoma HT1080 cells, showing that fucoidan extracts significantly inhibit their invasion, possibly via suppressing matrix metalloproteinases (MMPs) MMP-2/9 activities. Further, we investigated the effects of the fucoidan extracts on angiogenesis of human uterine carcinoma HeLa cells, and found that fucoidan extracts suppressed expression and secretion of an angiogenesis factor vascular endothelial growth factor (VEGF), resulting in suppressed vascular tubules formation of tumor cells. The results taken together clarified that enzyme-digested fucoidan extracts from Cladosiphon novae-caledoniae kylin possess inhibitory effects on invasion and angiogenesis of tumor cells. These effects might, at least partially, be elicited by the antioxidative potential of enzyme digested fucoidan extracts.
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Affiliation(s)
- Jun Ye
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 812-8581, Fukuoka, Japan
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Inoue Y, Kawamoto S, Shoji M, Hashizume S, Teruya K, Katakura Y, Shirahata S. Properties of ras-amplified recombinant BHK-21 cells in protein-free culture. Cytotechnology 2011; 33:21-6. [PMID: 19002807 DOI: 10.1023/a:1008163312841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We compared serum and protein-free cultures ofa ras-amplified recombinant BHK-21 cell line(ras-rBHK-IgG), which hyperproduces a lungcancer specific recombinant human monoclonal antibody. Ras-rBHK-IgG cells were shown to grow well, evenin protein-free medium and to be morphologicallysimilar to cells cultured in serum containing medium. However, the growth rate of ras-rBHK-IgG cellswas considerably slower in protein-free medium, whichresults in a longer maintenance period compared with cells cultured in serum containing medium. In addition, it was found that antibody production in protein-free culture had a ten times higher maximum than cells cultured in serum containing medium. On theother hand, in high density culture, using the hollowfiber bioreactor system, ras-rBHK-IgG cellscould be maintained for a month in protein-freeculture in contrast with serum culture, which onlylasted for half a month. However, the markedincrease of antibody production was not observed. A total amount of about 15 mg of the recombinantantibody, obtained in protein-free culture, was abouttwo times of that obtained in serum culture, and wasshown to be reactive to lung cancer cells in tissue. From these properties in protein-free medium, it isconcluded that protein-free culture of ras-rBHK-IgG cells is suitable for middle scaleproduction of recombinant human monoclonal antibody.
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Affiliation(s)
- Y Inoue
- Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan,
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Yamashita M, Ichikawa A, Katakura Y, Mochizuki Y, Teruya K, Kim EH, Shirahata S. Induction of basophilic and eosinophilic differentiation in the human leukemic cell line KU812. Cytotechnology 2011; 36:179-86. [PMID: 19003329 DOI: 10.1023/a:1014001322272] [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: 11/12/2022] Open
Abstract
We have demonstrated that an immature prebasophilic cell line,KU812 cells can be induced to differentiate into basophil-like cells when cultured with hydrocortisone (HC) with enhanced cell surface expression of FcepsilonRI, a high affinity IgE receptor. In this study, we report that sodium nitroprusside (SNP), an intracellular NO donor, also induces cell surface expression of FcepsilonRI on KU812 cells. Cell surface FcepsilonRI expression was detected in about 20% of KU812 cells treated with SNP for 14 days as well as the cells treated with HC for 7 days, while non-treated KU812 cells did not express FcepsilonRI on their cell surface. However, Wright-Giemsa staining and flowcytometry analysis of CD13 and CD15 antigens on HC and SNP treated KU812 cells demonstrated that SNP induced eosinophilic differentiation in KU812 cells differently from HC which induced basophilic differentiation. To further confirm this result, we performed RT-PCR against mRNAs specific for eosinophils, such as eosinophil-derived neurotoxin (EDN) and eosinophil peroxidase(EPO). SNP treated KU812 cells but not HC treated cells expressed EDN and EPO mRNA depending upon the induction of differentiation,clearly demonstrating that SNP induces eosinophilic differentiation in KU812 cells. To clarify that different signaling cascades were activated in HC and SNP treated KU812 cells, we analyzed activities of AP-1, NF-AT and NF-kappaB transcription factors by EMSA, which are known to be involved in signal transduction pathways downstream from the FcepsilonRI molecule of basophils. All these three transcription factors were activated in HC treated KU812 cells,but not in non-treated and SNP treated KU812 cells. These results indicate that KU812 cells are multi-potent precursor cells which can be induced to differentiate into basophils and eosinophils upon exogenous signals, and that NO is an important factor to decide the eosinophilic differentiation in KU812 cells with enhanced surface expression of FcepsilonRI, and further suggest that different signaling cascades can be activated between basophilic and eosinophilic differentiation in KU812 cells.
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Affiliation(s)
- M Yamashita
- Department of Genetic Resources Technology, Faculty of Agriculture, Graduate School of Kyushu University, Fukuoka, 812-8581, Japan
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Miura T, Katakura Y, Seto P, Zhang Y, Teruya K, Nishimura E, Kato M, Hashizume S, Shirahata S. Availability of oncogene activated production system for mass production of light chain of human antibody in CHO cells. Cytotechnology 2011; 35:9-16. [PMID: 19003276 DOI: 10.1023/a:1008179919857] [Citation(s) in RCA: 3] [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] [Indexed: 11/12/2022] Open
Abstract
We previously established a ras-oncogene amplified Chinesehamster ovary (CHO) cell line, named ras clone I, as anuniversal host cell line for oncogene activated production(OAP) system to mass-produce recombinant protein by activationof the cytomegalovirus immediate early (CMV) promoter with ras protein. The lambda light chain(C5lambda) of human monoclonal antibody HB4C5 is expected tobe potentially useful for lung cancer targeting. We generated aC5lambda hyper-producing cell line by transfecting ras cloneI with the C5lambda gene expression plasmid regulated by theCMV promoter, of which productivity was 5.3 times greater thanthe hyper productive CHO cell line generated by using conventional CHO cells. Introduction of the adenovirus E1A geneinto the hyper-producing cell line derived from ras clone I resulted in further 9.5 times enhancement of the productivity,suggesting the synergistic effect of E1A and ras oncogenes on the recombinant protein production driven by the CMV promoter. In addition, intracellular accumulation of C5lambda andupregulation of BiP was found in hyper-producing cell lineswhich were introduced E1A and ras oncogene. This resultsuggests that excessive intracellular accumulation ofC5lambda protein, which might be caused by that the amount of produced C5lambda in ER is beyond the ability of CHO cells to secrete, might signal the BiP promoter. Our data imply that ras clone I is available as a general host cell for establishing the recombinant protein hyper-producing CHOcells by the OAP system, and suggest that further mass production of recombinant proteins in the OAP system can be possible by clarifying the accurate role of upregulated BiP protein.
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Affiliation(s)
- T Miura
- Graduate School of Genetic Resources Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
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Watanabe K, Honda M, Watanabe T, Tsukada K, Teruya K, Kikuchi Y, Oka S, Gatanaga H. Emergence of raltegravir-resistant HIV-1 in the central nervous system. Int J STD AIDS 2011; 21:840-1. [PMID: 21297097 DOI: 10.1258/ijsa.2009.009283] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Integrase inhibitor-resistant HIV-1 was detected in the cerebrospinal fluid, but not in the plasma of a 42-year-old man with HIV encephalopathy treated with a raltegravir (RAL)-containing regimen. Raltegravir resistance may develop in the central nervous system when the virus is already multi-drug resistant because of different penetration into cerebrospinal fluid of individual antiretroviral agents.
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Affiliation(s)
- K Watanabe
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
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Teruya K, Sueda J, Arai M, Tsurumaru N, Yamakawa R, Hirata A, Hirose T. Patching retinal breaks with Seprafilm in experimental rhegmatogenous retinal detachment of rabbit eyes. Eye (Lond) 2011; 23:2256-9. [PMID: 19169237 DOI: 10.1038/eye.2008.403] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To examine the short-term effect of Seprafilm for patching retinal breaks in experimental rhegmatogenous retinal detachment of rabbit eyes. METHODS Experimental retinal detachment with a break was made and repaired by fluid-gas exchange during vitreous surgery in 10 rabbit eyes. In seven eyes, Seprafilm was applied to cover iatrogenic retinal breaks entirely (study group) and in other three eyes operations were finished without Seprafilm application (control group). Funduscopic examination was carried out in both groups and in study group optical coherence tomography (OCT) was performed to observe Seprafilm on the retinal break. Eyes of study group were enucleated on 7th and 14th postoperative day for histological evaluation. RESULTS The funduscopic examination showed that the retina was reattached in all eyes of study group. Meanwhile all three eyes of control group resulted in proliferative vitreoretinopathy. OCT showed that Seprafilm adhered to the retina tightly. Funduscopic examination and OCT showed Seprafilm dissolved within 14 days. Histological examination revealed that Seprafilm adhered tightly to the retina and there was no inflammatory change at the Seprafilm application sites. CONCLUSIONS In our small number of this study, Seprafilm was found to be beneficial to patch small and posteriorly located retinal breaks in vitreous surgery for rhegmatogenous retinal detachment.
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Affiliation(s)
- K Teruya
- Department of Ophthalmology, Kurume University School of Medicine, Kurume, Japan.
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Li Y, Hamasaki T, Nakamichi N, Kashiwagi T, Komatsu T, Ye J, Teruya K, Abe M, Yan H, Kinjo T, Kabayama S, Kawamura M, Shirahata S. Suppressive effects of electrolyzed reduced water on alloxan-induced apoptosis and type 1 diabetes mellitus. Cytotechnology 2011; 63:119-31. [PMID: 21063772 PMCID: PMC3080478 DOI: 10.1007/s10616-010-9317-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 10/18/2010] [Indexed: 12/13/2022] Open
Abstract
Electrolyzed reduced water, which is capable of scavenging reactive oxygen species, is attracting recent attention because it has shown improved efficacy against several types of diseases including diabetes mellitus. Alloxan produces reactive oxygen species and causes type 1 diabetes mellitus in experimental animals by irreversible oxidative damage to insulin-producing β-cells. Here, we showed that electrolyzed reduced water prevented alloxan-induced DNA fragmentation and the production of cells in sub-G1 phase in HIT-T15 pancreatic β-cells. Blood glucose levels in alloxan-induced type 1 diabetes model mice were also significantly suppressed by feeding the mice with electrolyzed reduced water. These results suggest that electrolyzed reduced water can prevent apoptosis of pancreatic β-cells and the development of symptoms in type 1 diabetes model mice by alleviating the alloxan-derived generation of reactive oxygen species.
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Affiliation(s)
- Yupin Li
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- School of Life Sciences, Nanchang University of Science and Technology, Nanchang, 330013 People’s Republic of China
| | - Takeki Hamasaki
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Noboru Nakamichi
- Nihon Trim Co Ltd, 1-8-34 Oyodonaka, Kita-ku, Osaka, 531-0076 Japan
| | - Taichi Kashiwagi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Takaaki Komatsu
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Jun Ye
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- School of Life Science, Xiamen University, Fujian, 361005 People’s Republic of China
| | - Kiichiro Teruya
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Masumi Abe
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Hanxu Yan
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Tomoya Kinjo
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Shigeru Kabayama
- Nihon Trim Co Ltd, 1-8-34 Oyodonaka, Kita-ku, Osaka, 531-0076 Japan
| | - Munenori Kawamura
- Kyowa Hospital, 191-1 Sakae, Osibetanimachi, Nishi-ku, Kobe, 851-2211 Japan
| | - Sanetaka Shirahata
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
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Honda H, Gatanaga H, Matsumura J, Kamimura M, Goto K, Tsukada K, Honda M, Teruya K, Kikuchi Y, Oka S. Favourable use of non-boosted fosamprenavir in patients treated with warfarin. Int J STD AIDS 2009; 20:441. [DOI: 10.1258/ijsa.2009.009108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- H Honda
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - H Gatanaga
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - J Matsumura
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
- Department of Microbiology and Immunology, Nippon Medical School, Tokyo, Japan
| | - M Kamimura
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - K Goto
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
- Department of Infectious Diseases, Graduate School of Medicine, Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - K Tsukada
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - M Honda
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - K Teruya
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - Y Kikuchi
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
| | - S Oka
- AIDS Clinical Center, International Medical Center of Japan, Tokyo, Japan
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Teruya K, Zhang Y, Katakura Y, Shirahata S. A regulatable selective system facilitates isolation of heterologous protein hyper-producing mammalian cells without gene amplification. Cytotechnology 2008; 40:13-22. [PMID: 19003100 DOI: 10.1023/a:1023945517446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this article, we describe a new method that facilitates to isolate mammalian cells inducible hyper-producing heterologous proteins. This method uses the tetracycline-inducible system to express both the selection marker and the heterologous gene, therefore, allows to increase the selection pressure by reducing the transcription of the selection maker gene. Using this method, we were able to isolate recombinant Chinese hamster ovary cells with a high efficiency. One of established clones produced the recombinant bovine beta-lactoglobulin as heterologous protein at a peak rate of 12 mug 10(-6) cells/day with an inducibility of about 100-fold. This clone was over expressed them RNA of beta-lactoglobulin and the drug resistant gene but did not amplify their genes. When cultured in a hollow fiber bioreactor, the cells were able to secrete beta-lactoglobulinover 300 mug ml(-1). This method is applicable to a broad range of eukaryotic systems and is of general value to technology for recombinant protein production.
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Affiliation(s)
- Kiichiro Teruya
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan, 92 642 3047),
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Dong XY, Teruya K, Katakura Y, Zhang Y, Miura T, Daimon Y, Mori T, Ohashi H, Shirahata S. A hybrid system using both promoter activation and gene amplification for establishing exogenous protein hyper-producing cell lines. Cytotechnology 2008; 43:11-7. [PMID: 19003202 DOI: 10.1023/b:cyto.0000039901.92984.7a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We previously developed a promoter-activated production (PAP) system using amplified ras oncogene to activate the cytomegalovirus (CMV) promoter controlling the foreign gene in mammalian cells. CHO cells were demonstrated to be suitable for the PAP system. Here, we show that very high-level production of a recombinant protein was achieved when the human CMV promoter was inserted into a glutamine synthetase (GS) minigene expression plasmid, pEE14. A highly productive host CHO cell line, ras clone I containing amplified ras oncogene, was further transfected with the plasmid expressing both hIL-6 gene and GS minigene, and selected with methionine sulphoximine. We were able to establish a hIL-6 hyper-producing cell line, D29, which exhibited a peak productivity rate of approximately 40 mug hIL-6 10(-6) cells day(-1) through a combination of the PAP system and the GS gene amplification system. The cellular productivity of D29 cells was about 13-fold higher than control hIL-6-producing cells derived from CHO cells whose hIL-6 gene was amplified by the GS gene amplification system, and about 5-fold higher than the I13 cells established by the PAP system, which contains amplified ras oncogene and non-amplified hIL-6 gene. When D29 cells were cultured for a month, an accumulation rate of approximately 80 mug hIL-6 ml(-1) per 3 days was achieved on the 9th day. These results indicate that this PAP and GS hybrid system enables the efficient and rapid establishment of recombinant protein hyper-producing cell lines.
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Affiliation(s)
- Xiao-Yan Dong
- Department of Chemical Engineering, Tianjin University, Tianjin, 300072, P. R. China
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Kawahara T, Ichikawa A, Katakura Y, Teruya K, Yoshida T, Kikuchi M, Kamei M, Hashizume S, Shirahata S. Establishment of hybridomas producing cancer specific human antibodies from B cell line derived from PBL of a patient with adult T cell leukemia. Cytotechnology 2008; 36:171-7. [PMID: 19003328 DOI: 10.1023/a:1014049205434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Adult T cell leukemia (ATL) is a malignant disease characterized by tumorous proliferation of CD4(+) T cells infected with retrovirus human T cell leukemia virus Type-I (HTLV-I) and concurs with an autoimmune disease and cancer due to attenuated immune response. In this study, we established ATL patient derived B-cell line TM-1 producing cancer-specific IgM antibodies, and further characterized its antigen specificity by establishing hybridomas fused with human-mouse origin hetero-myeloma cell line RF-S1. We established three hybridoma cell lines termed 2E12, 3E9, and 3E10, which continuously secreted human IgM antibodies. Immunohistochemical staining of formalin-fixed tissue section using antibodies secreted from these hybridomas showed that these antibodies specifically recognized tumor sites of human colon adenocarcinomas. Antibody produced from hybridoma 3E9 bound to some of leukemic cell lines, but not to normal human PBL, which was evidenced by the flow cytometric analysis, indicating that antibody produced from 3E9 recognizes cell surface antigen specifically expressed in the leukemic cells.
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Affiliation(s)
- T Kawahara
- Department of Genetic Resources Technology, Kyushu University, Fukuoka, 812-8581, Japan
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Matsumoto SE, Yamashita M, Katakura Y, Aiba Y, Tomimatsu K, Kabayama S, Teruya K, Shirahata S. A rapid and efficient strategy to generate antigen-specific human monoclonal antibody by in vitro immunization and the phage display method. J Immunol Methods 2008; 332:2-9. [DOI: 10.1016/j.jim.2007.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Revised: 11/30/2007] [Accepted: 12/05/2007] [Indexed: 11/30/2022]
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Ye J, Li Y, Hamasaki T, Nakamichi N, Komatsu T, Kashiwagi T, Teruya K, Nishikawa R, Kawahara T, Osada K, Toh K, Abe M, Tian H, Kabayama S, Otsubo K, Morisawa S, Katakura Y, Shirahata S. Inhibitory effect of electrolyzed reduced water on tumor angiogenesis. Biol Pharm Bull 2008; 31:19-26. [PMID: 18175936 DOI: 10.1248/bpb.31.19] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vascular endothelial growth factor (VEGF) is a key mediator of tumor angiogenesis. Tumor cells are exposed to higher oxidative stress compared to normal cells. Numerous reports have demonstrated that the intracellular redox (oxidation/reduction) state is closely associated with the pattern of VEGF expression. Electrolyzed reduced water (ERW) produced near the cathode during the electrolysis of water scavenged intracellular H(2)O(2) and decreased the release of H(2)O(2) from a human lung adenocarcinoma cell line, A549, and down-regulated both VEGF transcription and protein secretion in a time-dependent manner. To investigate the signal transduction pathway involved in regulating VEGF expression, mitogen-activated kinase (MAPK) specific inhibitors, SB203580 (p38 MAPK inhibitor), PD98059 (ERK1/2 inhibitor) and JNKi (c-Jun N-terminal protein kinase inhibitor) were applied. The results showed that only PD98059 blocks VEGF expression, suggesting an important role for ERK1/2 in regulating VEGF expression in A549 cells. As well, ERW inhibited the activation of extracellular signal-regulated kinase (ERK) in a time-dependent manner. Co-culture experiments to analyze in vitro tubule formation assay revealed that A549 cell-derived conditioned medium significantly stimulated the formation of vascular tubules in all analyzed parameters; tubule total area, tubule junction, number of tubules, and total tubule length. ERW counteracted the effect of A549 cell-conditioned medium and decreased total tube length (p<0.01). The present study demonstrated that ERW down-regulated VEGF gene transcription and protein secretion through inactivation of ERK.
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Affiliation(s)
- Jun Ye
- Graduate School of Systems Life Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
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Ye J, Li Y, Hamasaki T, Nakamichi N, Kawahara T, Osada K, Teruya K, Kato Y, Toh K, Abe M, Katakura Y, Noguchi K, Shirahata S. Catalyser-21(TM), a mineral water derived from leaf soil, inhibits tumor cell invasion and angiogenesis. Cytotechnology 2007; 55:61-70. [PMID: 19002995 PMCID: PMC2104553 DOI: 10.1007/s10616-007-9073-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 03/08/2007] [Accepted: 03/30/2007] [Indexed: 12/11/2022] Open
Abstract
Catalyser-21(TM) is a mineral water derived from natural leaf soil containing various organic and inorganic substances. Previous reports suggested a possibility that Catalyser-21(TM) has antioxidative potential and could inhibit angiogenesis and cancer cell invasiveness. Angiogenesis is a prerequisite for cancer cells to spread to surrounding tissues. Vascular endothelial growth factor (VEGF) is a major angiogenic factor in the formation of blood capillaries by cancer cells to supply nutrients and oxygen for their sustained growth. Matrix metalloproteinase-2 (MMP-2) is another key enzyme for cancer cell metastasis. To assess the anti-angiogenic activity of Catalyser-21(TM), we first examined cell viability using a human cervical cancer cell line, HeLa, and a fibrosarcoma cell line, HT1080. The results showed that Catalyser-21(TM) decreased the viability of both cell types in a dose-dependent manner. Flow cytometric analysis proved that Catalyser-21(TM) scavenges intracellular H(2)O(2) in both cell types. RT-PCR demonstrated that both VEGF and MMP-2 gene transcription was suppressed after Catalyser-21(TM) treatment. Both Matrigel and tubule formation experiments showed an effect of Catalyser-21(TM). These results suggest that Catalyser-21(TM) has potential as an anti-tumor agent.
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Affiliation(s)
- Jun Ye
- />Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- />Key Laboratory of the Ministry of Education for Cell Biology and Tumor Cell Engineering, School of Life Science, Xiamen University, Fujian, China
| | - Yuping Li
- />School of Life Sciences, Nanchang University of Science and Technology, Nanchang, 330006 Jiangxi Province China
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Takeki Hamasaki
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Noboru Nakamichi
- />Functional Water Cell Analysis Center Co. Ltd, Fukuoka, 812-0000 Japan
| | - Takeshi Kawahara
- />Integrated Department of Sciences of Functional Foods, Graduate School of Agriculture, Shinshu University, 8304 Minamiminowa, Kamiina, Nagano, 399-4598 Japan
| | - Kazuhiro Osada
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Kiichiro Teruya
- />Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Yuko Kato
- />Department of Industrial Chemistry, Faculty of Engineering, Tohwa University, 1-1-1 Chikushigaoka, Minami-ku, Fukuoka, 815-8510 Japan
| | - Kazuko Toh
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Masumi Abe
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Yoshinori Katakura
- />Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Katsumi Noguchi
- />Noguchi General Institute Co. Ltd, 4-5-8 Kokyu, Miyazaki, 880-0913 Japan
| | - Sanetaka Shirahata
- />Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
- />Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
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Matsumoto SE, Yamashita M, Katakura Y, Noguchi E, Aiba Y, Ichikawa A, Teruya K, Shirahata S. In vitro immunization can elicit the expansion of diverse repertoire of B cells from peripheral blood mononuclear cells. Cytotechnology 2006; 52:227-33. [PMID: 19002881 DOI: 10.1007/s10616-006-9003-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Accepted: 03/09/2006] [Indexed: 10/24/2022] Open
Abstract
We previously developed an in vitro immunization (IVI) protocol of human peripheral blood mononuclear cells (PBMC) for generating antigen-specific human antibodies. In order to clarify whether IVI protocolinduces antigen-specific B cell responses in PBMC, we analyzed family gene usage and sequence of the variable region gene of immunoglobulin heavy chain (VH gene) of the antibody produced from the in vitro immunized PBMC. Sequence homology analyses of VH gene demonstrated that a larger repertoire of B cells can be sensitized with mite-extract than with cholera toxin B subunit and rice allergen. Further, antigen-specific B cells were efficiently expanded by using CpG oligodeoxynucleotide as adjuvant. These results suggest that appropriate combination of sensitizing antigen and adjuvant is primarily important for expansion of antigen-specific B cells in IVI protocol.
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Affiliation(s)
- Shin-Ei Matsumoto
- Graduate School of Systems Life Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
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Sugahara K, Tokumine J, Teruya K. Crit Care 2006; 10:P180. [DOI: 10.1186/cc4527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Xu Q, Katakura Y, Yamashita M, Fang S, Tamura T, Matsumoto SE, Aiba Y, Teruya K, Osada K, Nishikawa R, Shirahata S. IL-10 augments antibody production in in vitro immunized lymphocytes by inducing a Th2-type response and B cell maturation. Biosci Biotechnol Biochem 2005; 68:2279-84. [PMID: 15564665 DOI: 10.1271/bbb.68.2279] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An in vitro immunization (IVI) protocol enables antigen specific antibody production from L-Leucyl-L-Leucine methyl ester (LLME)-treated human peripheral blood lymphocytes (PBL) upon antigen stimulation in the presence of IL-2, IL-4, and muramyl dipeptide. In the course of our studies, we have found that IL-10 added at the antigen sensitization significantly augmented antibody production level from the LLME-treated PBL. In the present study, we tried to demonstrate the role of IL-10 in the augmentation of antibody production in an IVI protocol by clarifying the cytokine expression profiles in CD4(+) and CD8(+) T cells. The results showed that IL-10 skewed the Th1/Th2 balance to Th2-type responses by suppressing Th1-type cytokine production and augmenting Th2-type cytokine production in CD4(+) and CD8(+) T cells, as well as in CD19(+) B cells. Furthermore, IL-10 augmented the expression of CD38, an antigen marker of plasma cells, on B cells, which clearly indicates that IL-10 promoted differentiation and maturation of B cells in an IVI protocol. These results indicate that IL-10 plays an important role in setting the cellular milieu to produce antibodies in an IVI protocol.
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Affiliation(s)
- Qianghua Xu
- Department of Genetic Resources Technology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
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Sugahara K, Tokumine J, Teruya K. Crit Care 2005; 9:P186. [DOI: 10.1186/cc3249] [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: 11/10/2022] Open
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Kokaze A, Ishikawa M, Matsunaga N, Yoshida M, Sekine Y, Sekiguchi K, Harada M, Satoh M, Teruya K, Takeda N, Fukazawa S, Uchida Y, Takashima Y. Longevity-associated mitochondrial DNA 5178 A/C polymorphism and blood pressure in the Japanese population. J Hum Hypertens 2003; 18:41-5. [PMID: 14688809 DOI: 10.1038/sj.jhh.1001632] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [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: 11/09/2022]
Abstract
It has been reported that the mitochondrial DNA 5178 adenine/cytosine (mt5178 A/C) polymorphism, also called NADH dehydrogenase subunit 2-237 methionine/leucine (ND2-237 Met/Leu) polymorphism, may be associated with longevity in Japanese individuals, and that the mt5178A genotype may have an antiatherogenic influence. To determine whether mt5178 A/C polymorphism influences blood pressure, we genotyped 412 healthy Japanese individuals and performed a cross-sectional study investigating the relationship between genotype and blood pressure. In women with mt5178A, the mean diastolic blood pressure was higher than in those with mt5178C by 3.2 mmHg (P=0.040). In men, no statistically significant difference in systolic or diastolic blood pressure was observed between mt5178 A/C genotypes. However, a significant correlation between mt5178 A/C genotypes and the effects of habitual drinking on blood pressure was found. After adjustment for several factors, in men carrying mt5178C, both systolic and diastolic blood pressure were significantly higher in daily drinkers than in occasional (P=0.002 and 0.002, respectively) as well as nondrinkers (P<0.001 and 0.001, respectively), whereas in men carrying mt5178A, no significant differences in blood pressure were detected, irrespective of alcohol consumption. These results suggest that mt5178 A/C (=ND2-237 Met/Leu) polymorphism may influence both diastolic blood pressure in Japanese women and the blood-pressure-increasing effect of drinking in Japanese men.
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Affiliation(s)
- A Kokaze
- Department of Public Health, Kyorin University School of Medicine, Shinkawa Mitaka-shi, Tokyo, Japan.
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