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Yazdani, Razieh; Shams-Bakhsh, Masoud; Hassani-Mehraban, Afshin; Arab, Seyed Shahriar; Thelen, Nicolas; Thiry, Marc; Crommen, Jacques; Fillet, Marianne; Jacobs, Nathalie; Brans, Alain; Servais, Anne-Catherine
BMC biotechnology, 11/2019, Letnik: 19, Številka: 1Journal Article, Web Resource
Virus-like particle (VLP) platform represents a promising approach for the generation of efficient and immunogenic subunit vaccines. Here, the feasibility of using grapevine fanleaf virus (GFLV) VLPs as a new carrier for the presentation of human papillomavirus (HPV) L2 epitope was studied. To achieve this goal, a model of the HPV L2 epitope secondary structure was predicted and its insertion within 5 external loops in the GFLV capsid protein (CP) was evaluated. The epitope sequence was genetically inserted in the αB-αB domain C of the GFLV CP, which was then over-expressed in Pichia pastoris and Escherichia coli. The highest expression yield was obtained in E. coli. Using this system, VLP formation requires a denaturation-refolding step, whereas VLPs with lower production yield were directly formed using P. pastoris, as confirmed by electron microscopy and immunostaining electron microscopy. Since the GFLV L2 VLPs were found to interact with the HPV L2 antibody under native conditions in capillary electrophoresis and in ELISA, it can be assumed that the inserted epitope is located at the VLP surface with its proper ternary structure. The results demonstrate that GFLV VLPs constitute a potential scaffold for surface display of the epitope of interest.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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