title: A new technique to expand human mesenchymal stem cells using basement membrane extracellular matrix.
abstract: Mesenchymal stem cells (MSC) show a very short proliferative life span and readily lose the differentiation potential in culture. However, the growth rate and the proliferative life span of the stem cells markedly increased using tissue culture dishes coated with a basement membrane-like extracellular matrix, which was produced by PYS-2 cells or primary endothelial cells. Furthermore, the stem cells expanded on the extracellular matrix, but not those on plastic tissue culture dishes, retained the osteogenic, chondrogenic, and adipogenic potential throughout many mitotic divisions. The extracellular matrix had greater effects on the proliferation of MSC and the maintenance of the multi-lineage differentiation potential than basic fibroblast growth factor. Mesenchymal stem cells expanded on the extracellular matrix should be useful for regeneration of large tissue defects and repeated cell therapies, which require a large number of stem or progenitor cells.
authors.affiliation: Japan Science and Technology Corporation, Chiyoda-ku, Tokyo 102-8666, Japan.
authors.forename: Takehiro
authors.initials: T
authors.lastname: Matsubara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Tsutsumi
authors.forename: Haiou
authors.initials: H
authors.lastname: Pan
authors.forename: Hisatada
authors.initials: H
authors.lastname: Hiraoka
authors.forename: Ryo
authors.initials: R
authors.lastname: Oda
authors.forename: Masahiro
authors.initials: M
authors.lastname: Nishimura
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawaguchi
authors.forename: Kouzou
authors.initials: K
authors.lastname: Nakamura
authors.forename: Yukio
authors.initials: Y
authors.lastname: Kato
mesh_terms: D017667:Adipocytes / Q000378:metabolism; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001485:Basement Membrane / Q000378:metabolism*; D018929:Cell Culture Techniques / Q000379:methods*; D002454:Cell Differentiation; D002455:Cell Division; D002460:Cell Line; D019070:Cell Lineage; D003094:Collagen / Q000378:metabolism; D003470:Culture Media / Q000494:pharmacology; D004247:DNA / Q000378:metabolism; D005109:Extracellular Matrix / Q000378:metabolism*; D005993:Glycerolphosphate Dehydrogenase / Q000378:metabolism; D006025:Glycosaminoglycans / Q000378:metabolism; D006801:Humans; D007797:Laminin / Q000378:metabolism; D008648:Mesoderm / Q000166:cytology*; D051379:Mice; D008938:Mitosis; D010969:Plastics; D012333:RNA, Messenger / Q000378:metabolism; D012038:Regeneration; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013234:Stem Cells / Q000378:metabolism*; D013997:Time Factors
chemical_list: D003470:Culture Media; D006025:Glycosaminoglycans; D007797:Laminin; D010969:Plastics; D012333:RNA, Messenger; D003094:Collagen; D004247:DNA; D005993:Glycerolphosphate Dehydrogenase; D000469:Alkaline Phosphatase