title: Enrichment of undifferentiated mouse embryonic stem cells on a culture surface with a glucose-displaying dendrimer.
abstract: This article describes an in vitro culture system for embryonic stem (ES) cells, which are expected to serve as a cell source for transplantation because of their potential for indefinite expansion and pluripotency. We present a serial passaging protocol that permits the enrichment of undifferentiated ES cells by culturing them on a surface modified with a synthesized dendrimer having d-glucose as a functional ligand. The d-glucose-displaying dendrimer (GLU/D) surface caused mouse ES cells to form loosely attached spherical colonies, and the frequency of such colonies increased gradually with the number of passages. Analyses of alkaline phosphatase activity and the gene expression of pluripotency and early differentiation markers revealed that the spherical colony cells passaged four times (a total of 16days in culture) on the GLU/D surface acquired more of the characteristics of undifferentiated cells than the cells cultured on a conventional gelatin-coated surface. Moreover, the cells cultured on the GLU/D surface retained their germ-line transmission ability after four passages. These results indicate that this modified culture surface may be a useful tool for obtaining enriched preparations of undifferentiated ES cells.
authors.affiliation: Division of Stem Cell Regulation Research (G6), Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
authors.forename: Shohreh
authors.initials: S
authors.lastname: Mashayekhan
authors.forename: Mee-Hae
authors.initials: MH
authors.lastname: Kim
authors.forename: Satsuki
authors.initials: S
authors.lastname: Miyazaki
authors.forename: Fumi
authors.initials: F
authors.lastname: Tashiro
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kino-oka
authors.forename: Masahito
authors.initials: M
authors.lastname: Taya
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Miyazaki
mesh_terms: D000199:Actins / Q000378:metabolism; D000818:Animals; D002454:Cell Differentiation; D049109:Cell Proliferation; D048430:Cell Shape; D002478:Cells, Cultured; D003598:Cytoskeletal Proteins / Q000378:metabolism; D050091:Dendrimers / Q000378:metabolism*; D053595:Embryonic Stem Cells / Q000166:cytology*; D018507:Gene Expression Regulation, Developmental; D005947:Glucose / Q000378:metabolism*; D051379:Mice; D018613:Microscopy, Confocal; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013499:Surface Properties
chemical_list: D000199:Actins; D003598:Cytoskeletal Proteins; D050091:Dendrimers; D005947:Glucose