title: Autologous synovial fluid enhances migration of mesenchymal stem cells from synovium of osteoarthritis patients in tissue culture system.
abstract: Synovial fluid from osteoarthritic knee contains mesenchymal stem cells (MSCs). One of the possible reservoirs of MSCs in synovial fluid is synovial tissue, and synovial fluid may induce mobilization of MSCs into synovial fluid in osteoarthritis patients. Here, we investigated whether synovial fluid expanded synovial MSCs in a tissue culture system. Human synovium and synovial fluid were obtained from osteoarthritis patients during total knee arthroplasties. In the tissue culture system, autologous synovial fluid expanded synovial cells statistically higher than alpha MEM + FBS, and the addition of TGF beta 3 to alpha MEM + FBS increased expansion to a similar level in all 11 donors. The addition of decorin or anti-TGFbeta neutralizing antibody to synovial fluid partially inhibited synovial cell expansion. In cell culture assay, synovial fluid proliferated synovial cells fewer than alpha MEM + FBS. The expanded synovial cells in synovial fluid retained multipotentiality and showed surface markers similar to those of MSCs. We demonstrated that autologous synovial fluid enhanced expansion of MSCs in tissue culture of synovium from osteoarthritis patients by promoting cell migration. This effect was partially affected by TGFbeta.
authors.affiliation: Section of Orthopedic Surgery, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, 113-8519 Japan.
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhang
authors.forename: Takeshi
authors.initials: T
authors.lastname: Muneta
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Morito
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Mochizuki
authors.forename: Ichiro
authors.initials: I
authors.lastname: Sekiya
mesh_terms: D000368:Aged; D019138:Antibodies, Blocking / Q000494:pharmacology; D002465:Cell Movement / Q000187:drug effects / Q000502:physiology; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D058575:Decorin; D016326:Extracellular Matrix Proteins / Q000494:pharmacology; D005260:Female; D006801:Humans; D008297:Male; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000502:physiology; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000378:metabolism* / Q000473:pathology; D011509:Proteoglycans / Q000494:pharmacology; D013582:Synovial Fluid / Q000187:drug effects / Q000378:metabolism*; D013583:Synovial Membrane / Q000378:metabolism* / Q000473:pathology; D016212:Transforming Growth Factor beta / Q000276:immunology / Q000494:pharmacology
chemical_list: D019138:Antibodies, Blocking; C546878:DCN protein, human; D058575:Decorin; D016326:Extracellular Matrix Proteins; D011509:Proteoglycans; D016212:Transforming Growth Factor beta