OBJECTIVES: The purpose of this study is to isolate a population of multipotent cells from human amnion and decidua, respectively. METHODS: Human placentas (gestational age, 30~42 weeks) were obtained after vaginal or cesarean deliveries. Amnions and deciduas were divided mechanically. The collected cells from the amnion and decidua were cultured. Cultured cells were immunophenotypically characterized. The adipogenic, osteogenic and neurogenic differentiation capacities were tested, and their growth kinetics were analyzed. RESULTS: We successfully isolated MSCs from both the amnion and decidua. The phenotype of MSCs cultured from different fetal and maternal parts of the placenta was comparable. The growth kinetics of MSCs derived from amnions and deciduas were similar. Isolated MSCs were differentiated into various cell lines such as adipogenic, osteogenic, myogenic and neurogenic cells. CONCLUSIONS: The human amnion and decidua could be an excellent source of MSC because they are easily obtainable after delivery and showed a higher expansion capacity than that of MSCs from adult bone marrow.
Adult ; Amnion ; Cell Line ; Cells, Cultured ; Decidua ; Durapatite ; Female ; Humans ; Kinetics ; Mesenchymal Stromal Cells ; Phenotype ; Placenta

Mesenchymal stem cells (MSCs) are capable of self-renewal and differentiation into lineages of mesenchymal tissues that are currently under investigation for a variety of therapeutic applications. The purpose of this study was to compare cytokine gene expression in MSCs from human placenta, cord blood (CB) and bone marrow (BM). The cytokine expression profiles of MSCs from BM, CB and placenta (amnion, decidua) were compared by proteome profiler array analysis. The cytokines that were expressed differently, in each type of MSC, were analyzed by real-time PCR. We evaluated 36 cytokines. Most types of MSCs had a common expression pattern including MIF (GIF, DER6), IL-8 (CXCL8), Serpin E1 (PAI-1), GROalpha(CXCL1), and IL-6. MCP-1, however, was expressed in both the MSCs from the BM and the amnion. sICAM-1 was expressed in both the amnion and decidua MSCs. SDF-1 was expressed only in the BM MSCs. Real-time PCR demonstrated the expression of the cytokines in each of the MSCs. The MSCs from bone marrow, placenta (amnion and decidua) and cord blood expressed the cytokines differently. These results suggest that cytokine induction and signal transduction are different in MSCs from different tissues.
Bone Marrow Cells/*cytology ; Cytokines/genetics/*metabolism ; Female ; Fetal Blood/*cytology ; Gene Expression Profiling ; Humans ; Mesenchymal Stem Cells/cytology/*metabolism ; Placenta/*cytology ; Pregnancy ; Protein Array Analysis