title: Bioinert surface of pluronic-immobilized flask for preservation of hematopoietic stem cells.
abstract: The bioinert materials on which cells do not proliferate, differentiate, nor de-differentiate should be useful for the culture and preservation of stem cells. The Pluronic F127, a triblock copolymer of ethylene oxide, and propylene oxide was activated using carbonyldiimidazole (CDI), and CDI-activated Pluronic was subsequently immobilized on the surface of a lysine-coated polystyrene tissue culture flask. The morphology of fibroblasts (L929 cells) on the Pluronic-immobilized flask was spherical, and did not show spreading behavior. This observation indicates that L929 cells on the Pluronic-immobilized flask were cultured in a bioinert environment. The expression ratio of surface markers on hematopoietic stem cells (CD34 and CD133) cultured in the Pluronic-immobilized flask was significantly higher than that in polystyrene tissue culture flask and commercially available bioinert flask (i.e., low cell binding cultureware). This is caused by the existence of hydrophilic segments of Pluronic F127 on the Pluronic-immobilized flask.
authors.affiliation: Department of Materials and Life Science, Seikei University, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 180-8633, Japan. higuchi@st.seikei.ac.jp
authors.forename: Akon
authors.initials: A
authors.lastname: Higuchi
authors.forename: Nobuo
authors.initials: N
authors.lastname: Aoki
authors.forename: Taro
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Gomei
authors.forename: Satsuki
authors.initials: S
authors.lastname: Egashira
authors.forename: Yuki
authors.initials: Y
authors.lastname: Matsuoka
authors.forename: Toyohiko
authors.initials: T
authors.lastname: Miyazaki
authors.forename: Hisashi
authors.initials: H
authors.lastname: Fukushima
authors.forename: Shin
authors.initials: S
authors.lastname: Jyujyoji
authors.forename: Shizue H
authors.initials: SH
authors.lastname: Natori
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D002460:Cell Line; D002478:Cells, Cultured; D018914:Cells, Immobilized / Q000187:drug effects; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D051379:Mice; D015394:Molecular Structure; D020442:Poloxamer / Q000737:chemistry / Q000494:pharmacology*; D013499:Surface Properties; D014470:Umbilical Cord / Q000166:cytology / Q000187:drug effects / Q000502:physiology
chemical_list: D015415:Biomarkers; D020442:Poloxamer