title: The effect of bovine endosteum-derived particles on the proliferation of human mesenchymal stem cells.
abstract: There is a large biomanufacturing and clinical need for cost-effective and simple techniques to expand mesenchymal stem cells whilst retaining their multipotency. Endosteum-derived particles were prepared, characterised and examined as a biomaterial to facilitate the in vitro expansion of human mesenchymal stem cells. Bovine endosteum-derived particles are composed of chondroitin sulphate glycosaminoglycans with 4- and 6-sulphation and N-sulphated heparan sulphate glycosaminoglycans. The particles were positive for perlecan, laminin and fibronectin by immunohistochemistry and alpha-mannose, alpha-glucose, terminal N-acetyl-alpha-D-glucosamine, N-acetyl-alpha-galactosamine and alpha-fucose, using lectin binding. Human mesenchymal stem cells showed greater than 96% attachment to the particles after one day in spinner culture. After 7 days, the stem cells on decalcified particles were viable and had a 5-fold higher growth than the stem cells grown on Cytodex-2 beads. Significantly more stem cells were recovered from decalcified particles compared with mineralised particles (P < 0.05). Differentiation to chondrogenic, osteogenic and adipogenic lineages was maintained after culturing stem cells on the demineralised particles. We conclude that bovine endosteum-derived particles can be extracted from bone marrow to retain sulphated proteoglycans and glycosylated proteins. These particles are a suitable biomaterial for supporting the growth and retaining the multipotency of human mesenchymal stem cells.
authors.affiliation: CSIRO, Molecular and Health Technologies, 343 Royal Parade, Parkville, Victoria 3052, Australia. julie.nigro@csiro.au
authors.forename: Julie
authors.initials: J
authors.lastname: Nigro
authors.forename: Jacinta F
authors.initials: JF
authors.lastname: White
authors.forename: John A M
authors.initials: JA
authors.lastname: Ramshaw
authors.forename: David N
authors.initials: DN
authors.lastname: Haylock
authors.forename: Susan K
authors.initials: SK
authors.lastname: Nilsson
authors.forename: Jerome A
authors.initials: JA
authors.lastname: Werkmeister
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry / Q000378:metabolism; D001842:Bone and Bones / Q000033:anatomy & histology*; D002241:Carbohydrates / Q000737:chemistry; D002417:Cattle; D018929:Cell Culture Techniques / Q000379:methods*; D002454:Cell Differentiation / Q000502:physiology; D049109:Cell Proliferation; D002478:Cells, Cultured; D002809:Chondroitin Sulfates / Q000737:chemistry / Q000378:metabolism; D005109:Extracellular Matrix / Q000737:chemistry; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000502:physiology*; D039902:Multipotent Stem Cells / Q000166:cytology / Q000502:physiology; D055153:Stem Cell Niche
chemical_list: D001672:Biocompatible Materials; D002241:Carbohydrates; C038142:chondroitin sulfate glycosaminoglycan; D002809:Chondroitin Sulfates