Event Abstract Back to Event Construction of a naive human phage scFv library and selection, identification of human scFvs Qing Yuan1, Siji Nian1*, Xiyuan Guo1, Yan Gao1 and Jiajia Liu1 1 Luzhou medcal college, department of Inmmunology, China The IL-4, IL-13 and IL-33 are key components in the development of allergic disease such as asthma. To construction of human non-immune library and selection of human scFvs against the three cytokines, the mRNA of human peripheral blood cells (PBMC) was extracted from healthy volunteer, and then the cDNA library was constructed. The variable region of heavy chain (VH) and light chain (VL, including Vκ and Vλ) were amplified from full length cDNA library. The VH and VL were ligated with linker and the DNA library of single-chain Fv fragments (scFvs) was developed. After transforming into E.coli TG1, the phage library was constructed. The antigen IL-4, IL-13 and IL-33 were cloned, expressed and identified. The scFv library was enriched for three rounds by phage display for selection of human scFvs against IL-4, IL-13 and IL-33. By PCR, forty two bands of VH, sixteen bands of Vκ and eighteen bands of Vλ were got. And the scFv library was constructed successfully with 2.5x108 development clones with full length scFv inserts. Through three rounds of phage display, 30% clones showed positive using ELISA for detection. Four to five scFvs with high affinity against IL-4, IL-13 and IL-33 respectively were screened, expressed, and identified by Biacore, western blot and sequencing. The results showed the size of proteins of identified scFvs were about 32 kDa and the sequences were correct. The human non-immune library was constructed and the scFvs specific to IL-4, IL-13 and IL-33 respectively were selected successfully. Acknowledgements This work was supported by the Natural Science Foundation of China (No. 31000415) and the project of Science and Technology Department of Sichuan Province (No.2012JQ0018). References [1]. Moulin, D., Donze, O., Talabot-Ayer, D., Mezin, F., Palmer, G., & Gabay, C. (2007). Cytokine, 40, 216–225. [2]. Komai-Koma, M., Xu, D., Li, Y., McKenzie, A. N., McInnes, I. B., & Liew, F. Y. (2007). European Journal of Immunology, 37, 2779–2786. [3]. Suzukawa, M., Iikura, M., Koketsu, R., Nagase, H., Tamura, C., Komiya, A., et al. (2008). Journal of Immunology, 181, 5981–5989. [4]. Cherry, W. B., Yoon, J., Bartemes, K. R., Iijima, K., & Kita, H. (2008). The Journal of Allergy and Clinical Immunology, 121, 1484–1490. [5]. Suzukawa, M., Koketsu, R., Iikura, M., Nakae, S., Matsumoto, K., Nagase, H., et al. (2008). Laboratory Investigation, 88, 1245–1253. [6]. Kondo, Y., Yoshimoto, T., Yasuda, K., Futatsugi-Yumikura, S., Morimoto, M., Hayashi, N., et al. (2008). International Immunology, 20, 791–800. [7]. Qing, Y., Zhongkang,W., Siji, N., Youping, Y., Gang, C., & Yuxian, X. (2009). Applied Biochemistry and Biotechnology, 152, 224–234. [8]. Kurowska-Stolarska, M., Kewin, P., Murphy, G., Russo, R. C., Stolarski, B., Garcia, C. C., et al. (2008). Journal of Immunology, 181, 4780–4790. Keywords: Human scFvs, phage display, IL-4, IL-13, IL-33 Conference: 15th International Congress of Immunology (ICI), Milan, Italy, 22 Aug - 27 Aug, 2013. Presentation Type: Abstract Topic: Adaptive Immunity Citation: Yuan Q, Nian S, Guo X, Gao Y and Liu J (2013). Construction of a naive human phage scFv library and selection, identification of human scFvs. Front. Immunol. Conference Abstract: 15th International Congress of Immunology (ICI). doi: 10.3389/conf.fimmu.2013.02.00521 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 07 Jun 2013; Published Online: 22 Aug 2013. * Correspondence: Mr. Siji Nian, Luzhou medcal college, department of Inmmunology, Luzhou, Sichuan province, 646000, China, sijinian@hotmail.com Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. 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