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Yumoto K, Arisaka T, Okada K, Aoki K, Ose T, Masatani T, Sugiyama M, Ito N, Fukuhara H, Maenaka K. Characterization of Single-Chain Fv Fragments of Neutralizing Antibodies to Rabies Virus Glycoprotein. Viruses 2021; 13:v13112311. [PMID: 34835117 PMCID: PMC8624154 DOI: 10.3390/v13112311] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/10/2021] [Accepted: 11/16/2021] [Indexed: 11/28/2022] Open
Abstract
Rabies has almost a 100% case-fatality rate and kills more than 59,000 people annually around the world. There is no established treatment for rabies. The rabies virus (RABV) expresses only the glycoprotein (RABVG) at the viral surface, and it is the target for the neutralizing antibodies. We previously established mouse monoclonal antibodies, 15–13 and 12–22, which showed neutralizing activity against the RABV, targeting the sequential and conformational epitopes on the RABVG, respectively. However, the molecular basis for the neutralizing activity of these antibodies is not yet fully understood. In this study, we evaluated the binding characteristics of the Fab fragments of the 15–13 and 12–22 antibodies. The recombinant RABVG protein, in prefusion form for the binding analysis, was prepared by the silkworm–baculovirus expression system. Biolayer interferometry (BLI) analysis indicated that the 15–13 Fab interacts with the RABVG, with a KD value at the nM level, and that the 12–22 Fab has a weaker binding affinity (KD ~ μM) with the RABVG compared to the 15–13 Fab. Furthermore, we determined the amino acid sequences of both the antibodies and the designed single-chain Fv fragments (scFvs) of the 15–13 and 12–22 antibodies as another potential biopharmaceutical for targeting rabies. The 15–13 and 12–22 scFvs were successfully prepared by the refolding method and were shown to interact with the RABVG at the nM level and the μM level of the KD, respectively. These binding characteristics were similar to that of each Fab. On the other hand, differential scanning fluorometry (DSF) revealed that the thermal stability of these scFvs decreases compared to their Fabs. While the improvement of the stability of scFvs will still be required, these results provide insights into the neutralizing activity and the potential therapeutic use of antibody fragments for RABV infection.
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Affiliation(s)
- Kohei Yumoto
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan; (K.Y.); (T.A.); (K.A.); (T.O.)
| | - Tomoaki Arisaka
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan; (K.Y.); (T.A.); (K.A.); (T.O.)
| | - Kazuma Okada
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.M.); (M.S.); (N.I.)
| | - Kyosuke Aoki
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan; (K.Y.); (T.A.); (K.A.); (T.O.)
| | - Toyoyuki Ose
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan; (K.Y.); (T.A.); (K.A.); (T.O.)
| | - Tatsunori Masatani
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.M.); (M.S.); (N.I.)
| | - Makoto Sugiyama
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.M.); (M.S.); (N.I.)
| | - Naoto Ito
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan; (K.O.); (T.M.); (M.S.); (N.I.)
| | - Hideo Fukuhara
- Center for Research and Education on Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan;
- Global Station for Biosurfaces and Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Katsumi Maenaka
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan; (K.Y.); (T.A.); (K.A.); (T.O.)
- Center for Research and Education on Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan;
- Global Station for Biosurfaces and Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Correspondence:
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Arisaka T, Yagi T, Chiba S, Tonogi M, Nakajima T, Ota F. 0499 Creation Of Sleep Apnea Severity Prediction Equation By Maxillofacial Ct In Non-elderly Japanese Men. Sleep 2018. [DOI: 10.1093/sleep/zsy061.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Arisaka
- Ota memorial sleep center, kawasaki, KANAGAWA, JAPAN
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, JAPAN
| | - T Yagi
- Ota memorial sleep center, kawasaki, KANAGAWA, JAPAN
| | - S Chiba
- Ota memorial sleep center, kawasaki, KANAGAWA, JAPAN
- Department of Otorhinolaryngology, Jikei University School of Medicine, Tokyo, JAPAN
| | - M Tonogi
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, JAPAN
| | - T Nakajima
- Division of Otorhinolaryngology, Ichikawa General Hosptal, Tokyo Dental College, Chiba, JAPAN
| | - F Ota
- Ota memorial sleep center, kawasaki, KANAGAWA, JAPAN
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Arisaka T, Yagi T, Chiba S, Tonogi M, Nakajima T. 0587 WHERE DOES PHASE1 SLEEP SURGERY INCLUDING GENIOGLOSSUS ADVANCEMENT ENLARGE THE AIRWAY? Sleep 2017. [DOI: 10.1093/sleepj/zsx050.586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Okuno K, Sato K, Arisaka T, Hosohama K, Gotoh M, Taga H, Sasao Y, Hamada S. The effect of oral appliances that advanced the mandible forward and limited mouth opening in patients with obstructive sleep apnea: A systematic review and meta-analysis of randomised controlled trials. J Oral Rehabil 2014; 41:542-54. [DOI: 10.1111/joor.12162] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2014] [Indexed: 11/28/2022]
Affiliation(s)
- K. Okuno
- Division for Oral and Facial Disorders; Osaka University Dental Hospital; Osaka Japan
| | - K. Sato
- Oral Cancer Center; Tokyo Dental College; Chiba Japan
| | - T. Arisaka
- Department of Oral Medicine, Oral and Maxillofacial Surgery; Tokyo Dental College; Chiba Japan
| | - K. Hosohama
- Department of Oral Medicine, Oral and Maxillofacial Surgery; Tokyo Dental College; Chiba Japan
| | - M. Gotoh
- Second Department of Oral and Maxillofacial Surgery; Osaka Dental University; Osaka Japan
| | - H. Taga
- Dentistry and Oral Surgery; JR Tokyo General Hospital; Tokyo Japan
| | - Y. Sasao
- Center for Oral Functional Disorders; Sasao Dental Clinic; Yamaguchi Japan
| | - S. Hamada
- Department of Oral and Maxillofacial Surgery; Kinki University Faculty of Medicine; Osaka Japan
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Kawamori R, Matsuhisa M, Kinoshita J, Mochizuki K, Niwa M, Arisaka T, Ikeda M, Kubota M, Wada M, Kanda T, Ikebuchi M, Tohdo R, Yamasaki Y. Pioglitazone enhances splanchnic glucose uptake as well as peripheral glucose uptake in non-insulin-dependent diabetes mellitus. AD-4833 Clamp-OGL Study Group. Diabetes Res Clin Pract 1998; 41:35-43. [PMID: 9768370 DOI: 10.1016/s0168-8227(98)00056-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To evaluate the effect of pioglitazone on insulin resistance in non-insulin-dependent diabetes mellitus (NIDDM) patients, a double-blind placebo-controlled trial was carried out with 30 NIDDM patients. Twenty-one subjects, three on diet alone and 18 on sulfonylurea (SU), orally received 30 mg pioglitazone once daily for 12 weeks. Nine subjects, one on diet alone and eight on SU, received a matching placebo once daily for 12 weeks. Euglycemic (5.2 mmol/l) hyperinsulinemic (1200 pmol/l) clamp combined with an oral glucose load (OGL) was performed before and after 3-month treatment with pioglitazone or placebo to determine insulin-stimulated glucose disposal and splanchnic glucose uptake (SGU). No significant differences existed in the patients' characteristics, including age and body mass index, between the two study groups. The pioglitazone treatment increased the mean glucose infusion rate (GIR) prior to OGL from 8.2 +/- 2.2 to 9.2 +/- 2.0 mg/kg.min (mean +/- SD, P = 0.003) and increased the SGU rate from 28.5 +/- 19.4 to 59.4 +/- 27.1% (P = 0.010). The placebo treatment produced no significant changes in either GIR or SGU after treatment. A significant difference (P = 0.042) was observed in change of SGU between the pioglitazone and placebo treatment groups. In conclusion, the results indicate that pioglitazone is effective for ameliorating insulin resistance in NIDDM by enhancing SGU as well as peripheral glucose uptake.
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Affiliation(s)
- R Kawamori
- Department of Medicine, Metabolism and Endocrinology, Juntendo University School of Medicine, Tokyo, Japan
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Tohjima T, Honda N, Mochizuki K, Kinoshita J, Watanabe K, Arisaka T, Kawamori R, Nakamura M, Kurahashi Y, Yoshimoto T, Yamamoto S. Decreased activity of arachidonate 12-lipoxygenase in platelets of Japanese patients with non-insulin-dependent diabetes mellitus. Metabolism 1998; 47:257-63. [PMID: 9500559 DOI: 10.1016/s0026-0495(98)90253-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To study the metabolism of the platelet 12-lipoxygenase pathway in diabetes, we evaluated the correlation between the activity and amount of arachidonate 12-lipoxygenase in the platelets of patients with non-insulin-dependent-diabetes mellitus (NIDDM). There were four parts in this investigation: (1) examination of abnormalities in platelet 12-lipoxygenase in patients with NIDDM recruited from the Hospital of Juntendo University School of Medicine; (2) comparison of 12-lipoxygenase in the platelets of non-obese NIDDM patients without angiopathy versus normal subjects matched for age, sex, and body mass index (BMI); (3) evaluation of gender differences; and (4) assessment of the potential influence of glycemic control. The activity of 12-lipoxygenase was assayed by incubation of [1-14C]arachidonic acid with the platelet cytosol. The reaction mixture was extracted and separated by thin-layer chromatography, and the radioactive end products were detected. The activity of 12-lipoxygenase in the platelets of patients with NIDDM was significantly less than in normal subjects (P < .003), whereas the amount of 12-lipoxygenase protein did not differ between the two groups. Thus, the specific activity of 12-lipoxygenase in diabetic patients was significantly less than that of normal subjects (P < .001). The enzyme activity and the specific enzyme activity of 12-lipoxygenase in non-obese NIDDM patients without angiopathy were significantly lower than the values in normal subjects matched for gender, age, and BMI (P < .006 and P < .0007, respectively). No significant difference in the activity or amount of platelet 12-lipoxygenase was observed between males and females matched for age, BMI, and disease. In addition, no relationship was observed between 12-lipoxygenase activity and blood glucose levels measured at the time of specimen collection. However, slight negative correlations were noted between 12-lipoxygenase activity and 1,5-anhydroglucitol, hemoglobin A1c (HbA1c), and fructosamine (r = .369, -.354, and -.279, respectively). When recombinant 12-lipoxygenase was incubated with varying concentrations of glucose or fructose, enzyme inactivation was related to the length of incubation, and was unaffected by glucose or fructose. These observations suggest that the activity of 12-lipoxygenase in the platelets of patients with NIDDM is decreased by prolonged hyperglycemia. The mechanism involved requires further investigation.
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Affiliation(s)
- T Tohjima
- Department of Medicine, Metabolism and Endocrinology, Juntendo University School of Medicine, Tokyo, Japan
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Kawamori R, Arisaka T. [Glycogen synthesis and glycogenolysis]. Nihon Rinsho 1997; 55 Suppl:17-32. [PMID: 9392087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- R Kawamori
- Department of Medicine, Metabolism & Endocrinology, Juntendo University School of Medicine
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Arisaka T, Mitsumata M, Kawasumi M, Tohjima T, Hirose S, Yoshida Y. Effects of shear stress on glycosaminoglycan synthesis in vascular endothelial cells. Ann N Y Acad Sci 1995; 748:543-54. [PMID: 7695202 DOI: 10.1111/j.1749-6632.1994.tb17359.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Glycocalyx on the surface of endothelium has been suggested to be involved in vascular permeability and anticoagulation. In the present study, we demonstrated that fluid laminar shear stress enhanced a glycosaminoglycan (GAG) synthesis in porcine aortic endothelial cells, in vitro. Shear stress (15, 40 dyn/cm2) for 24 hours significantly increased GAG synthesis, assayed by [35S]sulfate incorporation, in "medium" fraction and "trypsinated" fraction which includes GAGs derived from the cell surface and from the solubilized matrix. Increased GAGs in the trypsinated and medium fractions consisted of mainly heparan sulfate and chondroitin/dermatan sulfate, respectively. Both heparan and chondroitin/dermatan sulfate increases are required to expose the cells to shear stress for more than 24 hours. Shear-stress-induced increase in GAG synthesis was concomitant with a decrease in DNA synthesis and an increase in protein synthesis. These data indicate that relatively high shear stress may suppress atherogenesis by changing endothelial GAG synthesis.
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Affiliation(s)
- T Arisaka
- Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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Tohjima T, Arisaka T, Honda N. In vitro effects of trapidil on fatty acid and prostaglandin metabolism in platelets. Clin Ther 1994; 16:405-15. [PMID: 7923307] [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: 01/27/2023]
Abstract
The effects of trapidil, a coronary vasodilator and platelet aggregation inhibitor, on fatty acid metabolism and prostaglandin (PG) formation in platelets were studied using platelet suspensions from six normal subjects. The addition of trapidil to fatty acids in platelet phospholipids decreased palmitoleic acid and arachidonic acid, and increased an unidentified substance, X2 (palmitoleic acid, P < 0.05; arachidonic acid, P < 0.05; X2, P < 0.05). Thrombin stimulation following the addition of trapidil resulted in an increase in stearic acid and a decrease in arachidonic acid, compared with the trapidil-free control samples (stearic acid, P < 0.05; arachidonic acid, P < 0.02). The addition of trapidil tended to increase immunoreactive PGE (iPGE) and iPGF dose-dependently. On the other hand, thrombin stimulation following the addition of trapidil decreased the formation of thromboxane B2 (TXB2) significantly compared with the levels of TXB2 in the trapidil-free samples (10 micrograms/mL trapidil, P < 0.005, 100 micrograms/mL trapidil, P < 0.001). These results show that trapidil increased arachidonic acid mobilization in the platelets.
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Affiliation(s)
- T Tohjima
- Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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