Engineered resistance to Nosema bombycis by in vitro expression of a single-chain antibody in Sf9-III cells

Nosema bombycis is a destructive, obligate intracellular parasite of the Bombyx mori. In this study, a single-chain variable fragment (scFv) dependent technology is developed for the purpose of inhibiting parasite proliferation in insect cells. The scFv-G4, which we prepared from a mouse G4 monoclon...

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Veröffentlicht in:PloS one 2018-02, Vol.13 (2), p.e0193065-e0193065
Hauptverfasser: Huang, Yukang, Chen, Jie, Sun, Bin, Zheng, Rong, Li, Boning, Li, Zeng, Tan, Yaoyao, Wei, Junhong, Pan, Guoqing, Li, Chunfeng, Zhou, Zeyang
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container_title PloS one
container_volume 13
creator Huang, Yukang
Chen, Jie
Sun, Bin
Zheng, Rong
Li, Boning
Li, Zeng
Tan, Yaoyao
Wei, Junhong
Pan, Guoqing
Li, Chunfeng
Zhou, Zeyang
description Nosema bombycis is a destructive, obligate intracellular parasite of the Bombyx mori. In this study, a single-chain variable fragment (scFv) dependent technology is developed for the purpose of inhibiting parasite proliferation in insect cells. The scFv-G4, which we prepared from a mouse G4 monoclonal antibody, can target the N. bombycis spore wall protein 12 (NbSWP12). Indirect immunofluorescence assays showed that NbSWP12 located mainly on the outside of the N. bombycis cytoskeleton, although some of it co-localized with β-tubulin in the meront-stage of parasites. When meront division began, NbSWP12 became concentrated at both ends of each meront. Western blotting showed that scFv-G4 could express in Sf9-III cells and recognized native NbSWP12. The transgenic Sf9-III cell line showed better resistance than the controls when challenged with N. bombycis, indicating that NbSWP12 is a promising target in this parasite and this scFv dependent strategy could be a solution for construction of N. bombycis-resistant Bombyx mori.
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The transgenic Sf9-III cell line showed better resistance than the controls when challenged with N. bombycis, indicating that NbSWP12 is a promising target in this parasite and this scFv dependent strategy could be a solution for construction of N. bombycis-resistant Bombyx mori.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0193065</identifier><identifier>PMID: 29447266</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Anopheles stephensi ; Biology ; Biology and Life Sciences ; Biotechnology ; Bombyx mori ; Cell proliferation ; Chains ; Culicidae ; Cytoskeleton ; Genetic aspects ; Genomes ; Genomics ; Genotypes ; Health aspects ; Immunofluorescence ; Infections ; Insect cells ; Insects ; Laboratories ; Malaria ; Medicine and Health Sciences ; Methods ; Microsporidia ; Monoclonal antibodies ; Nosema bombi ; Parasites ; Physical Sciences ; Plasmodium falciparum ; Proteins ; Research and Analysis Methods ; Signal transduction ; Tubulin ; Virulence (Microbiology) ; Western blotting</subject><ispartof>PloS one, 2018-02, Vol.13 (2), p.e0193065-e0193065</ispartof><rights>COPYRIGHT 2018 Public Library of Science</rights><rights>2018 Huang et al. 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In this study, a single-chain variable fragment (scFv) dependent technology is developed for the purpose of inhibiting parasite proliferation in insect cells. The scFv-G4, which we prepared from a mouse G4 monoclonal antibody, can target the N. bombycis spore wall protein 12 (NbSWP12). Indirect immunofluorescence assays showed that NbSWP12 located mainly on the outside of the N. bombycis cytoskeleton, although some of it co-localized with β-tubulin in the meront-stage of parasites. When meront division began, NbSWP12 became concentrated at both ends of each meront. Western blotting showed that scFv-G4 could express in Sf9-III cells and recognized native NbSWP12. The transgenic Sf9-III cell line showed better resistance than the controls when challenged with N. bombycis, indicating that NbSWP12 is a promising target in this parasite and this scFv dependent strategy could be a solution for construction of N. bombycis-resistant Bombyx mori.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>29447266</pmid><doi>10.1371/journal.pone.0193065</doi><tpages>e0193065</tpages><orcidid>https://orcid.org/0000-0003-2296-0742</orcidid><oa>free_for_read</oa></addata></record>
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subjects Anopheles stephensi
Biology
Biology and Life Sciences
Biotechnology
Bombyx mori
Cell proliferation
Chains
Culicidae
Cytoskeleton
Genetic aspects
Genomes
Genomics
Genotypes
Health aspects
Immunofluorescence
Infections
Insect cells
Insects
Laboratories
Malaria
Medicine and Health Sciences
Methods
Microsporidia
Monoclonal antibodies
Nosema bombi
Parasites
Physical Sciences
Plasmodium falciparum
Proteins
Research and Analysis Methods
Signal transduction
Tubulin
Virulence (Microbiology)
Western blotting
title Engineered resistance to Nosema bombycis by in vitro expression of a single-chain antibody in Sf9-III cells
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