title: Differentiation Potential of Mesenchymal Stem Cells Derived from Adipose Tissue vs Bone Marrow Toward Annulus Fibrosus Cells In vitro.
abstract: BACKGROUND
  Bone marrow stem cells (BMSCs) and adipose-derived stem cells (ADSCs) are two types of stem cells that commonly used in exogenous tissue engineering as well as endogenous tissue repair, however which type of cell is superior remains unknown.
  
  
  OBJECTIVE
  This study was conducted to compare differentiation potential of BMSCs and ADSCs from Sprague-Dawley rats towards annulus fibrosus (AF)-like cells.
  
  
  METHODS
  Stem cells and AF cells were cocultured with direct cell-to-cell contact in coculture plates with 0.4m pore size up till 21 days. AF markers expression at the histological level and molecular level were evaluated by histological analysis and dimethplmethplene blue (DMMB) assay as well as quantitative reverse-transcription polymerase chain reaction (qRT-PCR).
  
  
  RESULTS
  qRT-PCR) results showed up regulation in AF marker gene expressions of both two MSCs after coculture. BMSCs demonstrated a statistically increased expression of collagen II and aggrecan from 7 days of coculture. However, these gene expressions in ADSCs showed a statistically increase at day 14 and day 21. And there was a statistically increase of Collagen I expression in BMSCs at 14 days and 21 days. But only after 21 days of coculture, ADSCs showed a statistically increase in collagen I expression. Moreover, histological analysis and dimethplmethplene blue (DMMB) assay mirrored the results of qRT-PCR. Morphologically, BMSCs became enlarged and triangular, while ADSCs were enlarged and rounded after coculture.
  
  
  CONCLUSIONS
  These findings suggested that BMSCs might be superior as a cell source for annulus fibrosus repair compared to ADSCs.
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Department of Orthopaedics, The Second Affiliated Hospital, Jiaxing College, Jiaxing 314000, Zhejiang Province, China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Xuqi
authors.initials: X
authors.lastname: Hu
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Xuhao
authors.initials: X
authors.lastname: Zheng
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Yaosen
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Naifeng
authors.initials: N
authors.lastname: Tian
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.
authors.forename: Huazi
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province. China.|Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325000, Zhejiang Province, China.|Chinese Orthopaedic Regenerative Medicine Society, Wenzhou, China.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000273:Adipose Tissue / Q000166:cytology; D000818:Animals; D000070616:Annulus Fibrosus / Q000166:cytology* / Q000637:transplantation; D001854:Bone Marrow Cells; D002454:Cell Differentiation; D017690:Cell Transplantation / Q000379:methods; D002478:Cells, Cultured; D018920:Coculture Techniques; D055959:Intervertebral Disc Degeneration / Q000628:therapy; D008297:Male; D059630:Mesenchymal Stem Cells / Q000502:physiology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D023822:Tissue Engineering / Q000379:methods
keywords: Bone marrow stem cells; adipose-derived stem cells; annulus fibrosus cells; coculture; degenerative disc disease