title: [Incipient establishment of human bone marrow mesenchymal stem cells bank].
abstract: OBJECTIVE
  To investigate the possibility of establishing the human bone marrow mesenchymal stem cells (hMSCs) bank as to provide an alternative source for the seed cells of tissue engineering.
  
  
  METHODS
  The cell surface antigens of the purified, expanded hMSCs and the ones following cryopreservation were detected by flow cytometry, cultured in a special medium to induce the osteogenic and chondrocytic differentiation. Morphology was studied by light and electronic microscopes. The detection of alkaline phosphatase, collagen type I, osteocalcin, and collagen type II were also performed by immunochemistry and molecular biology.
  
  
  RESULTS
  The phenotype and expansion possibility of hMSCs after cryopreservation were remained. It could expand for 10 generations. The doubling time was 40 h.
  
  
  CONCLUSIONS
  The bank of hMSCs is incipiently established and can provide eligible seed cells for tissue engineering.
authors.affiliation: Department of Otorhinolaryngology, Tang Du Hospital of the Forth Military Medical University, Xi'an Shaanxi ,710038, P. R. China. pangyg@fmmu.edu.cn
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Pang
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Cui
authors.forename: Wenxian
authors.initials: W
authors.lastname: Chen
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D000954:Antigens, Surface / Q000378:metabolism; D018070:Biological Specimen Banks; D001854:Bone Marrow Cells / Q000166:cytology* / Q000378:metabolism; D018929:Cell Culture Techniques; D002454:Cell Differentiation; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology; D024042:Collagen Type I / Q000235:genetics / Q000378:metabolism; D024043:Collagen Type II / Q000378:metabolism; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000378:metabolism; D010006:Osteoblasts / Q000166:cytology; D015675:Osteocalcin / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D023822:Tissue Engineering
chemical_list: D000954:Antigens, Surface; D024042:Collagen Type I; D024043:Collagen Type II; D015675:Osteocalcin; D000469:Alkaline Phosphatase