title: Cell-surface modification of non-GMO without chemical treatment by novel GMO-coupled and -separated cocultivation method.
abstract: We developed a novel method to coat living non-genetically modified (GM) cells with functional recombinant proteins. First, we prepared GM yeast to secrete constructed proteins that have two domains: a functional domain and a binding domain that recognizes other cells. Second, we cocultivated GM and non-GM yeasts that share and coutilize the medium containing recombinant proteins produced by GM yeasts using a filter-membrane-separated cultivation reactor. We confirmed that GM yeast secreted enhanced green fluorescent protein (EGFP) fusion proteins to culture medium. After cocultivation, EGFP fusion proteins produced by GM yeast were targeted to non-GM yeast (Saccharomyces cerevisiae BY4741DeltaCYC8 strain) cell surface. Yeast cell-surface engineering is a useful method that enables the coating of GM yeast cell surface with recombinant proteins to produce highly stable and accumulated protein particles. The results of this study suggest that development of cell-surface engineering from GM organisms (GMOs) to living non-GMOs by our novel cocultivation method is possible.
authors.affiliation: Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
authors.forename: Natsuko
authors.initials: N
authors.lastname: Miura
authors.forename: Wataru
authors.initials: W
authors.lastname: Aoki
authors.forename: Naoki
authors.initials: N
authors.lastname: Tokumoto
authors.forename: Kouichi
authors.initials: K
authors.lastname: Kuroda
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Ueda
mesh_terms: D002176:Candida albicans / Q000378:metabolism*; D018920:Coculture Techniques; D046508:Culture Techniques / Q000379:methods*; D005818:Genetic Engineering / Q000379:methods*; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D008565:Membrane Proteins / Q000235:genetics / Q000378:metabolism*; D050296:Microbial Viability; D030781:Organisms, Genetically Modified / Q000235:genetics / Q000378:metabolism; D021381:Protein Transport; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000235:genetics* / Q000378:metabolism
chemical_list: D008565:Membrane Proteins; D011993:Recombinant Fusion Proteins; C485184:enhanced green fluorescent protein; D049452:Green Fluorescent Proteins