title: Properties and growth of human bone marrow mesenchymal stromal cells cultivated in different media.
abstract: OBJECTIVE
  Human mesenchymal stromal cells (hMSC) are a promising tool for future clinical application, but their use requires rapid cell expansion in media suitable for clinical use. Therefore, we tested the influence of several culture media on colony formation, population doubling (PD) time, cell cycle and surface marker expression.
  
  
  METHODS
  hMSC isolated from human bone marrow (BM) obtained from healthy donors were seeded and expanded in different culture media: alpha-minimum essential medium (MEM) supplemented with 2.5%, 5%, 10% or 20% fetal bovine serum (FBS), 5% or 10% human cord blood serum (hCBS), 5% or 10% human blood serum from AB adult donors (hABS), or mesenchymal stem cell growth medium (MSCGM). The number, diameter and total area of the colonies formed and PD time were determined, and the cell cycle and 16 surface markers were analyzed.
  
  
  RESULTS
  Colony-forming efficiency was best in alpha-MEM/hCBS and alpha-MEM/hABS, good in MSCGM and worst in alpha-MEM/FBS. The shortest PD time was achieved in media enriched with human sera or MSCGM, while the time was increased in alpha-MEM/FBS. The largest proliferating fraction was seen in MSCGM followed by media enriched with human sera; the fraction was smallest in alpha-MEM/FBS. Staining for CD34, CD45, CD235a and CD271 was negative, while that for CD29, CD44, CD73, CD90, CD105 and human leukocyte antigen (HLA)-A, -B, -C was positive in all media tested. Media with human serum did not adversely affect the differentiation potential of hMSC, and differentiation into osteoblasts was enhanced.
  
  
  CONCLUSIONS
  The choice of serum influences hMSC expansion and cell properties; alpha-MEM supplemented with hABS seems to be a promising candidate for clinical use.
authors.affiliation: Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
authors.forename: Karolina
authors.initials: K
authors.lastname: Turnovcova
authors.forename: Katerina
authors.initials: K
authors.lastname: Ruzickova
authors.forename: Vaclav
authors.initials: V
authors.lastname: Vanecek
authors.forename: Eva
authors.initials: E
authors.lastname: Sykova
authors.forename: Pavla
authors.initials: P
authors.lastname: Jendelova
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000378:metabolism; D000943:Antigens, Differentiation / Q000378:metabolism; D001854:Bone Marrow Cells / Q000166:cytology / Q000378:metabolism*; D018929:Cell Culture Techniques; D002454:Cell Differentiation; D048708:Cell Growth Processes; D003114:Colony-Forming Units Assay; D017077:Culture Media, Conditioned / Q000378:metabolism*; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D017154:Stromal Cells / Q000166:cytology / Q000378:metabolism*
chemical_list: D015703:Antigens, CD; D000943:Antigens, Differentiation; D017077:Culture Media, Conditioned