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Kuboi Y, Suzuki Y, Motoi S, Matsui C, Toritsuka N, Nakatani T, Tahara K, Takahashi Y, Ida Y, Tomimatsu A, Soejima M, Imai T. Identification of potent siRNA targeting complement C5 and its robust activity in pre-clinical models of myasthenia gravis and collagen-induced arthritis. Mol Ther Nucleic Acids 2023; 31:339-351. [PMID: 36789273 PMCID: PMC9900455 DOI: 10.1016/j.omtn.2023.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
Complement component 5 (C5), an important molecule in the complement cascade, blockade by antibodies shows clinical efficacy in treating complement-mediated disorders. However, insufficient blockading induced by single-nucleotide polymorphisms in the C5 protein or frequent development of "breakthrough" intravascular hemolysis in patients with paroxysmal nocturnal hemoglobinuria treated with eculizumab have been reported. Herein, we developed a lipid nanoparticle (LNP)-formulated siRNA targeting C5 that was efficiently delivered to the liver and silenced C5 expression. We identified a potent C5-siRNA with an in vitro IC50 of 420 pM and in vivo ED50 of 0.017 mg/kg following a single administration. Single or repeated administrations of the LNP-formulated C5-siRNA allowed robust and durable suppression of liver C5 expression in mice. Complement C5 silencing ameliorated C5b-dependent anti-acetylcholine receptor antibody-induced myasthenia gravis and C5a-dependent collagen-induced arthritis symptoms. Similarly, in nonhuman primates, a single administration of C5-siRNA/LNP-induced dose-dependent plasma C5 suppression and concomitantly inhibited serum complement activity; complement activity recovered to the pre-treatment levels at 65 days post administration, thus indicating that the complement activity can be controlled for a specific period. Our findings provide the foundation for further developing C5-siRNA delivered via LNPs as a potential therapeutic for complement-mediated diseases.
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Affiliation(s)
- Yoshikazu Kuboi
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
- Corresponding author: Yoshikazu Kuboi, MS, KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Kobe, Hyogo 650-0047, Japan.
| | - Yuta Suzuki
- Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Sotaro Motoi
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Chiyuki Matsui
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Naoki Toritsuka
- Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Tomoya Nakatani
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kazuhiro Tahara
- Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Yoshinori Takahashi
- Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan
| | - Yoko Ida
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Ayaka Tomimatsu
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Motohiro Soejima
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Toshio Imai
- KAN Research Institute, Inc., 6-8-2 Minatojima minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
- Advanced Therapeutic Target Discovery, Kobe University Graduate School of Medicine, 1-5-6 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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Kuboi Y, Kuroda Y, Ohkuro M, Motoi S, Tomimori Y, Yasuda H, Yasuda N, Imai T, Matsuo K. The
Fractalkine‐CX3CR1
axis regulates non‐inflammatory osteoclastogenesis by enhancing precursor cell survival. JBMR Plus 2022; 6:e10680. [PMID: 36248274 PMCID: PMC9549724 DOI: 10.1002/jbm4.10680] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 08/16/2022] [Accepted: 09/02/2022] [Indexed: 11/22/2022] Open
Abstract
The chemokine fractalkine (FKN) is produced by various cell types, including osteoblasts and endothelial cells in bone tissue, and signals through a sole receptor, CX3CR1, which is expressed on monocytes/macrophages, including osteoclast precursors (OCPs). However, the direct effects of FKN signaling on osteoclast lineage cells under homeostatic noninflammatory conditions remain unclear. Here, we report that FKN regulates mouse OCP survival and primes OCPs for subsequent osteoclast differentiation. Wild‐type but not CX3CR1‐deficient OCPs grown on immobilized FKN showed enhanced osteoclast formation following receptor activator of NF‐κB ligand (RANKL) stimulation, with increased expression of osteoclast differentiation markers. Interestingly, the growth of OCPs on immobilized FKN increased the expression of Cx3cr1 and Tnfrsf11a (Rank) transcripts, but following RANKL stimulation, OCPs rapidly downregulated Cx3cr1 expression. Consistently, anti‐FKN monoclonal antibody (mAb) treatment attenuated RANKL‐induced osteoclast formation on immobilized FKN before, but not during, RANKL stimulation. CX3CR1 and RANK proteins were highly expressed on bone marrow‐derived CD11bhigh CD115+ OCPs. Growth on immobilized FKN prior to RANKL stimulation also increased CD11bhigh CD115+ OCP number and their survival and differentiation potential. In a RANKL‐based mouse model of bone loss, anti‐FKN mAb pretreatment significantly inhibited RANKL‐dependent bone loss. Thus, blocking the FKN‐CX3CR1 axis could represent a therapeutic option in noninflammatory bone loss diseases. © 2022 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Yoshikazu Kuboi
- KAN Research Institute Inc., 6‐8‐2 Minatojima‐minamimachi, Chuo‐ku Kobe Hyogo Japan
- Tsukuba Research Laboratories, Eisai Co. Ltd., 5‐1‐3 Tokodai, Tsukuba Ibaraki Japan
| | - Yukiko Kuroda
- Laboratory of Cell and Tissue Biology Keio University School of Medicine, 35 Shinanomachi, Shinjuku Tokyo Japan
| | - Masayoshi Ohkuro
- Tsukuba Research Laboratories, Eisai Co. Ltd., 5‐1‐3 Tokodai, Tsukuba Ibaraki Japan
| | - Sotaro Motoi
- KAN Research Institute Inc., 6‐8‐2 Minatojima‐minamimachi, Chuo‐ku Kobe Hyogo Japan
- Tsukuba Research Laboratories, Eisai Co. Ltd., 5‐1‐3 Tokodai, Tsukuba Ibaraki Japan
| | - Yoshiya Tomimori
- Nagahama Institute for Biochemical Science, Oriental Yeast Co. Ltd., 50 Kano‐cho Nagahama Shiga Japan
| | - Hisataka Yasuda
- Bioindustry Division Oriental Yeast Co. Ltd., 3‐6‐1 Azusawa, Itabashi‐ku Tokyo Japan
| | - Nobuyuki Yasuda
- KAN Research Institute Inc., 6‐8‐2 Minatojima‐minamimachi, Chuo‐ku Kobe Hyogo Japan
- Tsukuba Research Laboratories, Eisai Co. Ltd., 5‐1‐3 Tokodai, Tsukuba Ibaraki Japan
| | - Toshio Imai
- KAN Research Institute Inc., 6‐8‐2 Minatojima‐minamimachi, Chuo‐ku Kobe Hyogo Japan
- Laboratory of Advanced Therapeutic Target Discovery Kobe University Graduate School of Medicine, 1‐5‐6 Minatojima‐minamimachi, Chuo‐ku Kobe Hyogo Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology Keio University School of Medicine, 35 Shinanomachi, Shinjuku Tokyo Japan
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Motoi S, Uesugi M, Obara T, Moriya K, Arita Y, Ogasawara H, Soejima M, Imai T, Kawano T. Serum APOA4 Pharmacodynamically Represents Administered Recombinant Human Hepatocyte Growth Factor (E3112). Int J Mol Sci 2021; 22:4578. [PMID: 33925510 PMCID: PMC8123842 DOI: 10.3390/ijms22094578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/20/2021] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Hepatocyte growth factor (HGF) is an endogenously induced bioactive molecule that has strong anti-apoptotic and tissue repair activities. In this research, we identified APOA4 as a novel pharmacodynamic (PD) marker of the recombinant human HGF (rh-HGF), E3112. METHODS rh-HGF was administered to mice, and their livers were investigated for the PD marker. Candidates were identified from soluble proteins and validated by using human hepatocytes in vitro and an animal disease model in vivo, in which its c-Met dependency was also ensured. RESULTS Among the genes induced or highly enhanced after rh-HGF exposure in vivo, a soluble apolipoprotein, Apoa4, was found to be induced by rh-HGF in the murine liver. By using primary cultured human hepatocytes, the significant induction of human APOA4 was observed at the mRNA and protein levels, and it was inhibited in the presence of a c-Met inhibitor. Although mice constitutively expressed Apoa4 mRNA in the small intestine and the liver, the liver was the primary organ affected by administered rh-HGF to strongly induce APOA4 in a dose- and c-Met-dependent manner. Serum APOA4 levels were increased after rh-HGF administration, not only in normal mice but also in anti-Fas-induced murine acute liver failure (ALF), which confirmed the pharmacodynamic nature of APOA4. CONCLUSIONS APOA4 was identified as a soluble PD marker of rh-HGF with c-Met dependency. It should be worthwhile to clinically validate its utility through clinical trials with healthy subjects and ALF patients.
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Affiliation(s)
- Sotaro Motoi
- Eisai Product Creation Systems, KAN Product Creation Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan; (S.M.); (M.S.)
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Mai Uesugi
- Medicine Creation, Neurology Business Group, Translational Medicine Department, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan; (M.U.); (T.O.)
| | - Takashi Obara
- Medicine Creation, Neurology Business Group, Translational Medicine Department, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan; (M.U.); (T.O.)
| | - Katsuhiro Moriya
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Yoshihisa Arita
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Hideaki Ogasawara
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Motohiro Soejima
- Eisai Product Creation Systems, KAN Product Creation Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan; (S.M.); (M.S.)
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Toshio Imai
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
| | - Tetsu Kawano
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan; (K.M.); (Y.A.); (H.O.); (T.I.)
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Prabhu A, Brandl A, Wakama S, Sako S, Ishibashi H, Mizumoto A, Takao N, Ichinose M, Motoi S, Liu Y, Yonemura Y. Effect of oxaliplatin-based chemotherapy on chemosensitivity in patients with peritoneal metastasis from colorectal cancer treated with cytoreductive surgery and hyperthermic intraperitoneal chemotherapy: proof-of-concept study. BJS Open 2021; 5:6220267. [PMID: 33839755 PMCID: PMC8038512 DOI: 10.1093/bjsopen/zraa075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
Background Chemosensitivity testing, including collagen gel droplet‐embedded culture drug sensitivity test, has proven to be a useful tool in therapeutic decision‐making. This retrospective analysis investigated chemosensitivity testing of peritoneal metastases collected during cytoreductive surgery (CRS), and its impact on survival in patients with colorectal cancer. Methods All patients with peritoneal metastasis from colorectal cancer who underwent CRS with or without hyperthermic intraperitoneal chemotherapy (HIPEC) between November 2008 and October 2014 were included. The growth inhibition rate was expressed as the ratio between the image density after treatment (T) and that before treatment (control, C). Tumours with a reduction in T/C ratio of less than 20 per cent were defined as resistant and those with a reduction of 20 per cent or more as sensitive. Groups were compared for overall (OS) and disease‐free (DFS) survival. Results Of 84 eligible patients, 81 received neoadjuvant chemotherapy (NACT), including 56 patients with an oxaliplatin‐based regimen. Mean(s.d.) follow‐up was 23·4(22·9) months. The median overall survival of all patients was 19·0 (i.q.r. 5·7–36·1) months, with a progression‐free survival time of 10·1 (4·5–17·0) months. Patients who received oxaliplatin‐based NACT had significantly altered chemosensitivity to oxaliplatin; only 20 of 51 such patients showed chemosensitivity to oxaliplatin compared with 16 of 24 who did not undergo oxaliplatin‐based NACT (P = 0·046). However, patients who showed chemoresistance to oxaliplatin had similar OS to those with chemosensitivity (18·8 versus 18·1 months; P = 0·835). The choice of HIPEC agents in patients who received oxaliplatin‐based NACT did not significantly influence survival (oxaliplatin versus mitomycin C: median OS 20·6 (10·9–24·8) versus 19·0 (10·5–34·6) months, P = 0·811; DFS 6·6 (2·8–25·7) versus 9·3 (4·1–13·9) months, P = 0·191). Conclusion Patients who had oxaliplatin‐based NACT showed a higher rate of chemoresistance to oxaliplatin at the time of CRS and HIPEC. The impact of chemosensitivity testing on OS remains unclear and needs further investigation.
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Affiliation(s)
- A Prabhu
- Department of Surgical Oncology Thangam Cancer Centre, Namakkal India
| | - A Brandl
- Digestive Unit Champalimaud Foundation, Lisbon, Portugal
| | - S Wakama
- Department of Surgery Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Sako
- Non-Profit Organization to Support Peritoneal Surface Malignancy Treatment Japanese/Asian School of Peritoneal Surface Oncology, Kyoto Japan.,Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kishiwada, Tokushukai Hospital Kishiwada Japan
| | - H Ishibashi
- Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kishiwada, Tokushukai Hospital Kishiwada Japan
| | - A Mizumoto
- Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kusatsu General Hospital Shiga Japan
| | - N Takao
- Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kusatsu General Hospital Shiga Japan
| | - M Ichinose
- Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kusatsu General Hospital Shiga Japan
| | - S Motoi
- Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kusatsu General Hospital Shiga Japan
| | - Y Liu
- Non-Profit Organization to Support Peritoneal Surface Malignancy Treatment Japanese/Asian School of Peritoneal Surface Oncology, Kyoto Japan
| | - Y Yonemura
- Non-Profit Organization to Support Peritoneal Surface Malignancy Treatment Japanese/Asian School of Peritoneal Surface Oncology, Kyoto Japan.,Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kishiwada, Tokushukai Hospital Kishiwada Japan.,Department of Regional Cancer Therapy Peritoneal Surface Malignancy Centre, Kusatsu General Hospital Shiga Japan
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Motoi S, Toyoda H, Obara T, Ohta E, Arita Y, Negishi K, Moriya K, Kuboi Y, Soejima M, Imai T, Ido A, Tsubouchi H, Kawano T. Anti-Apoptotic Effects of Recombinant Human Hepatocyte Growth Factor on Hepatocytes Were Associated with Intrahepatic Hemorrhage Suppression Indicated by the Preservation of Prothrombin Time. Int J Mol Sci 2019; 20:ijms20081821. [PMID: 31013780 PMCID: PMC6514566 DOI: 10.3390/ijms20081821] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 11/16/2022] Open
Abstract
Hepatocyte growth factor (HGF) is an endogenously expressed bioactive substance that has a strong anti-apoptotic effect. In this study, we biochemically and histologically characterized the effects of rh-HGF on in vitro human hepatocyte injury and mouse acute liver failure (ALF) models, both of which were induced by antibody-mediated Fas signaling. rh-HGF inhibited intracellular caspase-3/7 activation and cytokeratin 18 (CK-18) fragment release in both models. Histologically, rh-HGF dramatically suppressed parenchymal damage and intrahepatic hemorrhage. Among the laboratory parameters, prothrombin time (PT) was strongly preserved by rh-HGF, and PT was well correlated with the degree of intrahepatic hemorrhage. These results showed that the anti-apoptotic effect of rh-HGF on hepatocytes coincided strikingly with the suppression of intrahepatic hemorrhage. PT was considered to be the best parameter that correlated with the intrahepatic hemorrhages associated with hepatocellular damage. The action of rh-HGF might derive not only from its anti-apoptosis effects on liver parenchymal cells but also from its stabilization of structural and vasculature integrity.
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Affiliation(s)
- Sotaro Motoi
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Hiroko Toyoda
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Takashi Obara
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Etsuko Ohta
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Yoshihisa Arita
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Kana Negishi
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Katsuhiro Moriya
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
| | - Yoshikazu Kuboi
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Motohiro Soejima
- Eisai Co., Ltd., KAN Product Creation Unit, Eisai Product Creation Systems, 5-1-3 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Toshio Imai
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
| | - Akio Ido
- Digestive and Lifestyle Diseases, Department of Human and Environmental Sciences, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan.
- Department of HGF Tissue Repair and Regenerative Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan.
| | - Hirohito Tsubouchi
- Department of Gastroenterology and Hepatology, Kagoshima City Hospital, 37-1 Uearata-cho, Kagoshima 8908760, Japan.
| | - Tetsu Kawano
- KAN Research Institute, Inc., 6-8-2 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 6500047, Japan.
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Kobayashi E, Motoi S, Sugiura M, Kajikawa M, Kojima S, Kohroki J, Masuho Y. Antibody-dependent cellular cytotoxicity and cytokine/chemokine secretion by KHYG-1 cells stably expressing FcγRIIIA. Immunol Lett 2014; 161:59-64. [PMID: 24841426 DOI: 10.1016/j.imlet.2014.05.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/24/2014] [Accepted: 05/08/2014] [Indexed: 10/25/2022]
Abstract
Antibody-dependent cellular cytotoxicity (ADCC) mediated by natural killer (NK) cells is a major mechanism of tumor therapy with antibodies. NK cells not only manifest cytotoxicity but also secrete a variety of cytokines/chemokines that regulate immune responses. Using a retroviral vector, in this study we established a KHYG-1 cell line that stably expresses FcγRIIIA (CD16A). The KHYG-1/FcγRIIIA cells exerted potent antibody concentration-dependent ADCC, whereas parental KHYG-1 cells did not. In contrast, without antibody, the natural killer activity of KHYG-1/FcγRIIIA cells was less potent than that of parental KHYG-1 cells. During the course of ADCC, KHYG-1/FcγRIIIA cells secreted IFN-γ and MIP-1α dependent upon antibody concentration, but parental KHYG-1 cells did not. These results suggest that KHYG-1/FcγRIIIA cells would be useful in studies to elucidate the function of NK cells and the mechanism of ADCC.
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Affiliation(s)
- Eiji Kobayashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan.
| | - Sotaro Motoi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
| | | | | | - Shuji Kojima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
| | - Junya Kohroki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
| | - Yasuhiko Masuho
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510, Japan
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Nagashima H, Ootsubo M, Fukazawa M, Motoi S, Konakahara S, Masuho Y. Enhanced antibody-dependent cellular phagocytosis by chimeric monoclonal antibodies with tandemly repeated Fc domains. J Biosci Bioeng 2011; 111:391-6. [DOI: 10.1016/j.jbiosc.2010.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 11/26/2010] [Accepted: 12/05/2010] [Indexed: 10/18/2022]
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Nagashima H, Kaneko K, Yamanoi A, Motoi S, Konakahara S, Kohroki J, Masuho Y. TNF receptor II fusion protein with tandemly repeated Fc domains. J Biochem 2011; 149:337-46. [PMID: 21278157 DOI: 10.1093/jb/mvq149] [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: 11/13/2022] Open
Abstract
The extracellular domain of tumour necrosis factor (TNF) receptor II fused with the human IgG1 Fc region (TNFRII-Fc), as well as antibodies against TNF, has been used to treat rheumatoid arthritis. However, TNFRII-Fc is less effective than these antibodies in terms of antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) against cells bearing TNF on the cell surface. We hypothesized that these activities could be increased by fusing TNFRII with tandemly repeated Fc (TNFRII-Fc-Fc). The affinities of TNFRII-Fc-Fc for soluble TNF-α and transmembrane TNF-α and the TNF-α cytotoxicity-inhibitory activity were as potent as those of TNFRII-Fc. TNFRII-Fc-Fc showed much higher binding avidity for Fcγ receptors than TNFRII-Fc and was more potent in terms of both ADCC and CDC against cells expressing transmembrane TNF-α. TNFRII-Fc-Fc of 80 kDa, as well as TNFRII-Fc-Fc of 200 kDa, was detected. TNFRII-Fc-Fc (80 kDa) was as potent as TNFRII-Fc in terms of both ADCC and CDC. These results suggest that Fc multimerization of receptor-Fc fusion proteins can augment effector functions such as ADCC and CDC, and thereby have the potential to provide a superior therapeutic effect. This may be the case not only for TNFRII-Fc but also for other receptor-Fc fusion proteins.
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Affiliation(s)
- Hiroaki Nagashima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda, Chiba, Japan
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Kobayashi T, Kohei O, Yusuke M, Mika S, Ryota O, Motoi S, Naohiro K. Hypercoagulation and elevated blood pressure induced by phosphatidylserine/phosphatidylcholine microvesicles in pregnant mice can be suppressed by heparin and annexin V. J Thromb Haemost 2003. [DOI: 10.1111/j.1538-7836.2003.tb03333.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kazama M, Suzuki S, Abe T, Tahara C, Shimazu C, Akiyama Y, Higashi K, Ishiguro I, Kimura T, Motoi S. Evaluation of international normalized ratios by a controlled field survey with 4 different thromboplastin reagents. Thromb Haemost 1990; 64:535-41. [PMID: 2084938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A nationwide survey has been performed in Japan involving 75 laboratories to assess the relative reliability of different methods of reporting prothrombin time results in anticoagulant control. The interchangeability of results using prothrombin time, prothrombin activity percentage, prothrombin ratio and international normalized ratios (INR) were compared with four different thromboplastin reagents and a range of coagulometers. A secondary batch of reference thromboplastin of human brain origin (BCT/454) was used to calibrate the local thromboplastins and for comparison of methods of reporting. The study revealed the closest agreement of the results between BCT and the other reagents, and the regression lines of these reagents were almost identical, when the results were reported as INR. Box-Whisker plot analysis showed that the distribution of the results was large with the more deficient plasmas with all methods of reporting. It was found by this analysis that the interchangeability of the results was greatest when the results were expressed by INR, because the mean values obtained of each plasma using different thromboplastin reagents gave the lowest CV and the frequency of the far-out data was least, compared with the other methods of expression. On the other hand, the type of coagulometer had almost as much effect as the thromboplastin reagent on the prothrombin time, even if INR was used. Interchangeability of INR would be further improved by providing ISI values for each reagent/instrument combination.
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Affiliation(s)
- M Kazama
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
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11
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Hosokawa T, Aoike A, Hosono M, Motoi S, Kawai K. Studies on B-cell memory. IV. Effects of lipopolysaccharide on primary and secondary antibody responses to T-independent type-2 (TI-2) antigen in mice. Microbiol Immunol 1989; 33:941-9. [PMID: 2593876 DOI: 10.1111/j.1348-0421.1989.tb00981.x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Effects of LPS on primary and secondary antibody responses to typical TI-2 antigens were investigated in mice. Simultaneous injection of LPS with a TI-2 antigen showed only little adjuvant effect on the following primary antibody response to the antigen. In contrast, either a single or multiple injections of LPS, prior to the immunization with a TI-2 antigen, significantly augmented the following primary antibody response to the antigen. LPS, however, inhibited the development of B-cell memory to a TI-2 antigen when administered together with the antigen. Moreover, an injection of LPS in mice, which had strong IgM and IgG B-cell memories to a TI-2 antigen, caused disappearance or profound reduction of the memories. The results suggest that LPS produced by gram-negative bacteria exerts inhibitory effects on the development and continuation of B-cell memory to bacterial infections.
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Affiliation(s)
- T Hosokawa
- Department of Preventive Medicine, Kyoto Prefectural University of Medicine
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12
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Iwatani Y, Amino N, Kabutomori O, Tamaki H, Aozasa M, Motoi S, Miyai K. Effects of different sample preparations on enumeration of large granular lymphocytes (LGLs), and demonstration of a sex difference of LGLs. Am J Clin Pathol 1988; 90:674-8. [PMID: 2461652 DOI: 10.1093/ajcp/90.6.674] [Citation(s) in RCA: 5] [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: 01/01/2023] Open
Abstract
Peripheral natural killer (NK) cells were identified by their morphologic appearance as large granular lymphocytes (LGLs) in a cytocentrifuged or spun blood film but not in thin wedge blood film. The authors studied the effect of different methods of sample preparation and staining on the enumeration of peripheral human LGLs as a routine test. In the blood film made from anticoagulated venous blood, LGLs were scattered in a field and sometimes deformed by compression of erythrocytes. In a blood film made from mononuclear cells, LGLs were shrunken, rendering it difficult to always identify cytoplasmic granules. In contrast, LGLs were easily and accurately identified in a blood film made from leukocyte-rich plasma, displaying none of the above artifacts. As well, the percentage of LGLs obtained was similar to that obtained from a blood film made from anticoagulated venous blood. In addition, May-Grünwald-Giemsa (MGG) stained azurophilic granules more clearly than did Giemsa above. As a result of these observations, a blood film that was made from leukocyte-rich plasma and that was stained by MGG was considered to be most suitable for the routine enumeration of LGL. Using this method, the authors found a significant correlation between the percentages of LGLs and Leu-7+ cells in the same subjects (r = 0.71; n = 22; P less than 0.001) and also a significant sex difference in the percentages of peripheral LGLs, which were significantly lower in women (17.0 +/- 3.6%; n = 35; P less than 0.05) than in men (19.5 +/- 5.3%; n = 20). Furthermore, the percentage of LGLs with abundant cytoplasmic granules, which might have greater NK activity, was also significantly lower in women (15.9 +/- 3.1%; n = 35; P less than 0.01) than in men (17.9 +/- 4.0%; n = 20).
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Affiliation(s)
- Y Iwatani
- Department of Laboratory Medicine, Osaka University Medical School, Japan
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13
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Shimamoto M, Yoshimura T, Kimura N, Kita M, Hoshino N, Motoi S, Suehisa E, Nishimura K, Hayashi C, Miyai K. Protein C in human plasma determined by homogeneous enzyme immunoassay with use of a centrifugal analyzer. Clin Chem 1988; 34:1834-8. [PMID: 3046778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We describe the simple and rapid enzyme immunoassay of protein C in human plasma with use of a Cobas Fara centrifugal analyzer. The antibody, labeled with horseradish peroxidase, is reacted with antigen (protein C) for 15 min. The peroxidase activity of the resulting antigen-antibody conjugate is measured at 500 nm for 5 min in the presence of excess H2O2, phenol, and 4-aminoantipyrine, as compared with that of free conjugates. Results are calculated from a stored standard curve and expressed as a percentage of the value determined for a pooled specimen of normal adult plasma. The standard curve is linear from 0% to 200%. The CV is generally less than 4% for different concentrations of protein C. In liver cirrhosis, hepatocellular carcinoma, therapy with warfarin, thrombosis, and disseminated intravascular coagulation, protein C concentrations are about 40-70% of normal. Results obtained with the present homogeneous enzyme immunoassay correlated well with those by enzyme-labeled immunosorbent assay (r = 0.97).
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Affiliation(s)
- M Shimamoto
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
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14
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Suehisa E, Motoi S, Nishimura K, Hayashi C, Miyai K, Yoshimura T, Kita M, Shimamoto M, Hoshino N. [Rapid determination of plasma protein C by homogeneous enzyme immunoassay method]. Rinsho Byori 1988; 36:1085-9. [PMID: 3073233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Nakayama M, Miyamoto Y, Hasegawa R, Kimoto K, Motoi S, Matsuno H, Yamashita M. [A case of gastric lipoma diagnosed with CT scan]. Rinsho Hoshasen 1988; 33:1023-6. [PMID: 3057261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Fushimi R, Tsujimura K, Yasuhara M, Iyama S, Kou T, Motoi S, Khoda K, Hayashi C, Tachi J, Amino N. [Studies on serum digoxin levels under administration of the Kyushin]. Rinsho Byori 1988; 36:1090-4. [PMID: 3246744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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17
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Shimamoto M, Yoshimura T, Kimura N, Kita M, Hoshino N, Motoi S, Suehisa E, Nishimura K, Hayashi C, Miyai K. Protein C in human plasma determined by homogeneous enzyme immunoassay with use of a centrifugal analyzer. Clin Chem 1988. [DOI: 10.1093/clinchem/34.9.1830] [Citation(s) in RCA: 7] [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: 11/13/2022]
Abstract
Abstract
We describe the simple and rapid enzyme immunoassay of protein C in human plasma with use of a Cobas Fara centrifugal analyzer. The antibody, labeled with horseradish peroxidase, is reacted with antigen (protein C) for 15 min. The peroxidase activity of the resulting antigen-antibody conjugate is measured at 500 nm for 5 min in the presence of excess H2O2, phenol, and 4-aminoantipyrine, as compared with that of free conjugates. Results are calculated from a stored standard curve and expressed as a percentage of the value determined for a pooled specimen of normal adult plasma. The standard curve is linear from 0% to 200%. The CV is generally less than 4% for different concentrations of protein C. In liver cirrhosis, hepatocellular carcinoma, therapy with warfarin, thrombosis, and disseminated intravascular coagulation, protein C concentrations are about 40-70% of normal. Results obtained with the present homogeneous enzyme immunoassay correlated well with those by enzyme-labeled immunosorbent assay (r = 0.97).
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Affiliation(s)
- M Shimamoto
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - T Yoshimura
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - N Kimura
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - M Kita
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - N Hoshino
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - S Motoi
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - E Suehisa
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - K Nishimura
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - C Hayashi
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
| | - K Miyai
- Research Division, Iatron Laboratories, Inc., Tokyo, Japan
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18
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Hosokawa T, Motoi S, Aoike A, Koyama K, Rokutan K, Nishi Y, Kawai K. Effect of aging on immunological memory in gastrointestinal tract induced by sheep red blood cells in mice. Gastroenterol Jpn 1988; 23:13-7. [PMID: 3280386 DOI: 10.1007/bf02918850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Tolerance induction by oral administration of sheep red blood cells (SRBC) was investigated in young and aged mice. Two-month old C3H/He mice receiving oral administration of 8 X 10(9) SRBC a day for two weeks became tolerant to a subsequent SRBC challenge in the systemic immune system. In contrast, older C3H/He mice aged about 1 year old receiving the same treatment did not become tolerant but resisted tolerance induction and produced a prominent IgG memory in the systemic immune system. Autoimmune-prone NZB mice showed a similar resistance to tolerance induction even at 3 months of age. To investigate a possible role of the liver in the oral tolerance induction, young (2-month old) C3H/He mice received an injection of 1 X 10(8) SRBC via portal vein. The mice thus treated, were not tolerized at all but immunized. The results suggest that gut-associated local immune system play a key role in the induction of the oral tolerance and that the tolerance inducing function of the local immune system declines with aging. Antigens in the gut including denatured self antigens may immunize the systemic immune system of aged animals.
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Affiliation(s)
- T Hosokawa
- Department of Preventive Medicine, Kyoto Prefectural University of Medicine, Japan
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19
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Motoi S, Suehisa E, Nishimura K, Amino N, Miyai K, Mori M, Tanizawa O. [Screening method of lupus anticoagulants using coagulation technics: clinical application to patients with SLE and habitual abortion]. Rinsho Byori 1988; 36:71-6. [PMID: 3130514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Aoike A, Motoi S, Hosokawa T, Yamaguchi M, Kawai K, Miyanaga M, Kimoto K, Ikeuchi H. [Analysis of T lymphocyte subsets by monoclonal antibodies in gastric cancer patients]. Nihon Shokakibyo Gakkai Zasshi 1984; 81:1099. [PMID: 6611430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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21
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Kabutomori O, Motoi S, Iwatani Y, Amino N, Mori H, Tamaki H, Miyai K. [Morphological measurement of peripheral NK cells. Basic examination and clinical application of detection of large granular lymphocyte]. Rinsho Byori 1984; 32:277-81. [PMID: 6547491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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22
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Iwatani Y, Amino N, Kabutomori O, Mori H, Tamaki H, Motoi S, Izumiguchi Y, Miyai K. Decrease of peripheral large granular lymphocytes in Graves' disease. Clin Exp Immunol 1984; 55:239-44. [PMID: 6546360 PMCID: PMC1535766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Peripheral large granular lymphocytes (LGL) were enumerated in normal subjects and patients with autoimmune thyroid diseases. In normal subjects, the percentage of LGL was significantly lower in women (mean +/- s.d., 17.0 +/- 3.6%; n = 35; P less than 0.05) than in men (19.5 +/- 5.3%; n = 20). In untreated patients with thyrotoxic Graves' disease (GD), both the percentage (11.5 +/- 2.7%; n = 12; P less than 0.001) and the absolute count (244 +/- 102/mm3; P less than 0.01) of LGL were significantly lower than those in normal women (17.0 +/- 3.6% and 334 +/- 122/mm3; n = 35). No significant differences from normal controls were observed in the percentages or absolute counts of LGL in patients with euthyroid GD under treatment or in euthyroid or hypothyroid patients with Hashimoto's disease (HD). The percentage of LGL was inversely correlated with the serum levels of T4 and T3 and the free T4 index, but not with the titre of anti-thyroid antibodies, the size of goitre or the degree of proptosis in the group of untreated patients with GD and HD. The decreased levels of LGL in thyrotoxic patients with GD may be related to the self-perpetuation of thyrotoxicosis in patients with this disease.
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23
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Mizushima K, Takaya Y, Asano T, Shinohara Y, Motoi S, Suzuki S, Ota Z, Yano K. Detection of DR antigen on leukemic cells from a patient suffering from adult T-cell leukemia and progressive systemic sclerosis. Acta Med Okayama 1983; 37:401-7. [PMID: 6228126 DOI: 10.18926/amo/32424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This report concerns an unusual case of adult T cell leukemia (ATL) complicated with progressive systemic sclerosis (PSS). The surface markers of peripheral blood mononuclear cells (PBM) and lymph node cells, both of which mainly consisted of leukemic cells, were examined. The effect of these cells on the pokeweed mitogen (PWM)-induced IgG synthesis by normal PBM also was studied. The leukemic cells formed rosettes with sheep red blood cells (SRBC; E) and expressed T cell antigen, Leu-1, and DR antigen. The detection of cell surface antigens was carried out by employing monoclonal antibodies against these antigens. We diagnosed this case as DR positive ATL. In terms of the immunoregulatory function of these leukemic cells, the co-culture experiments showed that these cells had some suppressive effect on the PWM-induced IgG production by allogeneic normal PBM.
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24
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Motoi S, Aoike A, Kawai K, Amagai T, Kishida T. Human cytotoxic T lymphocytes (CTL) induced by phytohemagglutinin: conditions for CTL generation and effect of interferon. Jpn J Med Sci Biol 1982; 35:221-230. [PMID: 6186831 DOI: 10.7883/yoken1952.35.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The present study demonstrates that human peripheral blood mononuclear cells (PMC) can be stimulated in vitro to become cytotoxic T lymphocytes (CTL) by PHA. A significant cytotoxic activity of PMC was detected 48 hr after the culture initiation in the presence of 5 micrograms/ml of PHA and the peak level of the activity was obtained by culturing PMC for 72 hr. The cytotoxic cells require the presence of PHA as a cell agglutinin for the expression of their cytotoxic activity. The effector cells mediating the activity were identified as T lymphocytes by E-rosette fractionation of PMC. In this system, removal of carbonyl iron phagocytosed or attached cells from PMC did not abrogate CTL generation of PMC. In addition, human alpha-interferon did not augment CTL generation or expression of their activity. Although the target cells employed were sensitive to natural killer (NK) cells, the effector cells induced by PHA did not seem to have any relation to the NK cells. The present study may provide a useful tool to analyze for precursors of killer T cells.
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26
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Mori H, Amino N, Iwatani Y, Kabutomori O, Asari S, Motoi S, Miyai K, Kumahara Y. Increase of peripheral B lymphocytes in Graves' disease. Clin Exp Immunol 1980; 42:33-40. [PMID: 6970099 PMCID: PMC1537063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Peripheral T and B lymphocytes were examined in autoimmune thyroid diseases. The percentages of T and B lymphocytes were calculated from the proportions of E and EAC rosette-forming cells and peroxidase-positive cells determined by micromethods. In thyrotoxic Graves' disease, the percentage of T cells was significantly lower, and the percentage of B cells was higher than in normal controls. The absolute count of B lymphocytes was also markedly increased. The serum levels of thyroid hormones showed a significant correlation with the percentage of B cells and an inverse correlation with that of T cells in untreated cases of Graves' disease. Similar abnormalities of lymphocyte subpopulations were observed in patients with thyrotoxic Graves' disease under drug therapy, but the proportions and absolute counts of T and B lymphocytes were normal in euthyroid patients with Graves' disease, either under drug therapy or in remission. No abnormalities in T and B cells were found in Hashimoto's disease. The data indicate that the main feature of the abnormality of the lymphocyte subpopulations in thyrotoxic Graves' disease is an increase of B lymphocytes. The reasons for the discrepancy between our results and those of earlier reports and for the B cell abnormality in Graves' disease are discussed.
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27
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Matsuura H, Tanabe T, Ohmori H, Nanba T, Kimoto K, Shigei H, Kurihara M, Kibayashi H, Motoi S, Kondo T. [An autopsy case of microscopic polyarteritis nodosa (author's transl)]. Nihon Naika Gakkai Zasshi 1980; 69:738-744. [PMID: 6106034 DOI: 10.2169/naika.69.738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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28
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Harano Y, Hidaka H, Takatsuki K, Ohgaku S, Haneda M, Motoi S, Kawagoe K, Shigeta Y, Abe H. Glucose, insulin, and somatostatin infusion for the determination of insulin sensitivity in vivo. Metabolism 1978; 27:1449-52. [PMID: 683015 DOI: 10.1016/0026-0495(78)90091-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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29
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Tada M, Misaki F, Shimono M, Motoi S, Suto Y, Katoh S, Kohli Y, Kawai K. Endoscopic studies on the minute structures of colonic mucosa in the follow-up observation of ulcerative colitis. Gastroenterol Jpn 1978; 13:72-6. [PMID: 669200 DOI: 10.1007/bf02773850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Thirty cases of ulcerative colitis were examined endoscopically by means of magnifying colonoscope with dye spraying method (the combined method), and their minute mucosal structures were classified into four categories endoscopically, which correlated well with the histological findings. By this procedure, it was easy to detect the subsidence of inflammation of the mucosa in the quiescent phase or to reveal the active inflammatory involvement of the bowel. Moreover, inspecting the minute changes of the colonic mucosa detected by the combined method, remission was more correctly decided and rigid control is contributing to the decrease in the recent rate of recurrence of ulcerative colitis.
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30
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Fujino T, Nakamura K, Motoi S, Ishibashi K, Inaoka Y. [Evaluation of erythrocyte and leukocyte count and hemoglobin determination by Cellkit-7 and Weihem-7]. Rinsho Byori 1971; 19:Suppl:275. [PMID: 5167967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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31
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Motoi S, Yanagida M, Hongo M. [Pedicled phyma of the perineal region]. Rinsho Byori 1970; 18:811. [PMID: 5533737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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32
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Motoi S, Omikazuki Y. [Autopsy case of chorionic epithelioma originated from the ovary]. Rinsho Byori 1969; 17:377. [PMID: 5816857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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