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Kawakami Y, Kinoshita M, Mori Y, Okochi S, Hirano S, Shimoda I, Kanzaki K, Suzuki-Yamamoto T, Kimoto M, Sugahara M, Hori T, Saino H, Miyano M, Yamamoto S, Takahashi Y. The Y54(L)W mutation of anti-leukotriene C 4single-chain antibody increases affinity to leukotriene E 4. J Biochem 2017; 161:79-86. [DOI: 10.1093/jb/mvw055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 08/11/2016] [Indexed: 11/14/2022] Open
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Kawakami Y, Hirano S, Kinoshita M, Otsuki A, Suzuki-Yamamoto T, Suzuki M, Kimoto M, Sasabe S, Fukushima M, Kishimoto K, Izumi T, Oga T, Narumiya S, Sugahara M, Miyano M, Yamamoto S, Takahashi Y. Neutralization of leukotriene C4 and D4 activity by monoclonal and single-chain antibodies. Biochim Biophys Acta Gen Subj 2013; 1840:1625-33. [PMID: 24361619 DOI: 10.1016/j.bbagen.2013.12.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 11/19/2013] [Accepted: 12/11/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cysteinyl leukotrienes (LTs) are key mediators in inflammation. To explore the structure of the antigen-recognition site of a monoclonal antibody against LTC4 (mAbLTC), we previously isolated full-length cDNAs for heavy and light chains of the antibody and prepared a single-chain antibody comprising variable regions of these two chains (scFvLTC). METHODS We examined whether mAbLTC and scFvLTC neutralized the biological activities of LTC4 and LTD4 by competing their binding to their receptors. RESULTS mAbLTC and scFvLTC inhibited their binding of LTC4 or LTD4 to CysLT1 receptor (CysLT1R) and CysLT2 receptor (CysLT2R) overexpressed in Chinese hamster ovary cells. The induction by LTD4 of monocyte chemoattractant protein-1 and interleukin-8 mRNAs in human monocytic leukemia THP-1 cells expressing CysLT1R was dose-dependently suppressed not only by mAbLTC but also by scFvLTC. LTC4- and LTD4-induced aggregation of mouse platelets expressing CysLT2R was dose-dependently suppressed by either mAbLTC or scFvLTC. Administration of mAbLTC reduced pulmonary eosinophil infiltration and goblet cell hyperplasia observed in a murine model of asthma. Furthermore, mAbLTC bound to CysLT2R antagonists but not to CysLT1R antagonists. CONCLUSIONS These results indicate that mAbLTC and scFvLTC neutralize the biological activities of LTs by competing their binding to CysLT1R and CysLT2R. Furthermore, the binding of cysteinyl LT receptor antagonists to mAbLTC suggests the structural resemblance of the LT-recognition site of the antibody to that of these receptors. GENERAL SIGNIFICANCE mAbLTC can be used in the treatment of inflammatory diseases such as asthma.
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Affiliation(s)
- Yuki Kawakami
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Shiori Hirano
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Mai Kinoshita
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Akemi Otsuki
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Toshiko Suzuki-Yamamoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Makiko Suzuki
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Masumi Kimoto
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Sae Sasabe
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Mitsuo Fukushima
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan
| | - Koji Kishimoto
- Department of Biochemistry, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Takashi Izumi
- Department of Biochemistry, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Toru Oga
- Department of Respiratory Care & Sleep Control Medicine, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Shuh Narumiya
- Department of Pharmacology, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan
| | - Mitsuaki Sugahara
- Structural Biophysics Laboratory, RIKEN SPring-8 Center, Harima Institute, Hyogo 679-5148, Japan
| | - Masashi Miyano
- Structural Biophysics Laboratory, RIKEN SPring-8 Center, Harima Institute, Hyogo 679-5148, Japan; Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Kanagawa 252-5258, Japan
| | - Shozo Yamamoto
- Department of Food and Nutrition, Kyoto Women's University, Kyoto 605-8501, Japan
| | - Yoshitaka Takahashi
- Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719-1197, Japan.
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