title: The influence of skeletal maturity on allogenic synovial mesenchymal stem cell-based repair of cartilage in a large animal model.
abstract: One of the potential factors that may affect the results of mesenchymal stem cell (MSC)-based therapy is the age of donors and recipients. However, there have been no controlled studies to investigate the influence of skeletal maturity on the MSC-based repair of cartilage. The purpose of this study was to compare the repair quality of damaged articular cartilage treated by a scaffold-free three-dimensional tissue-engineered construct (TEC) derived from synovial MSCs between immature and mature pigs. Synovial MSCs were isolated from immature and mature pigs and the proliferation and chondrogenic differentiation capacities were compared. The TEC derived from the synovial MSCs were then implanted into equivalent chondral defects in the medial femoral condyle of both immature and mature pigs, respectively. The implanted defects were morphologically and biomechanically evaluated at 6 months postoperatively. There was no skeletal maturity-dependent difference in proliferation or chondrogenic differentiation capacity of the porcine synovial MSCs. The TEC derived from synovial MSCs promoted the repair of chondral lesion in both immature and mature pigs without the evidence of immune reaction. The repaired tissue by the TEC also exhibited similar viscoelastic properties to normal cartilage regardless of the skeletal maturity. The results of the present study not only suggest the feasibility of allogenic MSC-based cartilage repair over generations but also may validate the use of immature porcine model as clinically relevant to test the feasibility of synovial MSC-based therapies in chondral lesions.
authors.affiliation: Department of Orthopaedics, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Shimomura
authors.forename: Wataru
authors.initials: W
authors.lastname: Ando
authors.forename: Kosuke
authors.initials: K
authors.lastname: Tateishi
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Nansai
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Fujie
authors.forename: David A
authors.initials: DA
authors.lastname: Hart
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Kohda
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kita
authors.forename: Takashi
authors.initials: T
authors.lastname: Kanamoto
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Mae
authors.forename: Ken
authors.initials: K
authors.lastname: Nakata
authors.forename: Konsei
authors.initials: K
authors.lastname: Shino
authors.forename: Hideki
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Norimasa
authors.initials: N
authors.lastname: Nakamura
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D001842:Bone and Bones / Q000502:physiology*; D002356:Cartilage / Q000473:pathology*; D002452:Cell Count; D002454:Cell Differentiation; D049109:Cell Proliferation; D020219:Chondrogenesis / Q000235:genetics; D024043:Collagen Type II / Q000235:genetics / Q000378:metabolism; D005786:Gene Expression Regulation; D006801:Humans; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000378:metabolism; D023421:Models, Animal; D013194:Staining and Labeling; D034421:Sus scrofa; D013583:Synovial Membrane / Q000166:cytology*; D054457:Tissue Scaffolds; D014184:Transplantation, Homologous; D014945:Wound Healing
chemical_list: D024043:Collagen Type II