title: [Effects of three-dimensional culture on cell phenotype and hematopoietic cytokine expression of umbilical cord mesenchymal stem cells].
abstract: This study was aimed to investigate the change of cell phenotype and the expression of hematopoiesis associated cytokines in umbilical cord mesenchymal stem cells (UC-MSC) in three-dimensional (3-D) system. MSC were isolated from umbilical cord, and then cultured in 2-D and 3-D system respectively. The phenotype of MSC was detected by flow cytometry; the angiogenic capability of MSC cultured in 2-D and 3-D syitem was assessed using in vitro capillary formation assay. The cytokine expression of MSC in two kinds of culture conditions was measured by real-time PCR. The results showed that MSC were successfully isolated from umbilical cord. Flow cytometry showed that the percentage of CD31, CD133 and CD271 expressed in endothelial cells, endothelial progenitor cells and primitive mesenchymal stem cells increased significantly in 3-D culture conditions, as compared to 2-D system. Capillary formation assay showed that the angiogenic capability of UC-MSC was greatly enhanced. Quantitative PCR showed that the expression of β-actin was upregulated in 3-D system. The expression of some cytokines associated with hematopoiesis, such as G-CSF, LIF, SCF, IL-1α, IL-1β, IL-3, IL-7 and IL-11, increased, especially for LIF, IL-3, IL-7. The expression of IL-10 associated with immune regulation also increased. The expression of SDF-1, IL-6 slightly decreased, but without significant difference. It is concluded that expression of CD31, CD133 and CD271 increases in 3-D system, the angiogenic capability of UC-MSC enhances and the expression of hematopoiesis-associated cytokines in UC-MSC increases in 3-D system.
authors.affiliation: Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Li
authors.affiliation: Cryomedicine Laboratory, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.affiliation: Cryomedicine Laboratory, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Huan
authors.initials: H
authors.lastname: Liu
authors.affiliation: Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Yun-Shan
authors.initials: YS
authors.lastname: Wang
authors.affiliation: Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan 250012, Shandong Province, China.
authors.forename: Ji-Fan
authors.initials: JF
authors.lastname: Gao
authors.affiliation: Central Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan 250012, Shandong Province, China. E-mail: Xiao-dj@126.com.
authors.forename: Dong-Jie
authors.initials: DJ
authors.lastname: Xiao
mesh_terms: D000199:Actins; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis*; D005434:Flow Cytometry; D006410:Hematopoiesis; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000378:metabolism*; D010641:Phenotype; D060888:Real-Time Polymerase Chain Reaction; D014470:Umbilical Cord / Q000378:metabolism*
chemical_list: D000199:Actins; D016207:Cytokines