title: [Influence of co-culture ex vivo of CD34+ cells from different two units of cord blood on their homing-related adherent molecules expression].
abstract: The study was aimed to explore the influence of co-culture ex vivo of CD34+ cells from two units of cord blood (CB) on the homing-related adherent molecule expression of each other. Mesenchymal stem cells (MSCs) were obtained from human bone marrow. Two units of CB CD34+ cells were co-cultured on 12 Gy gamma-ray irradiated MSC layer. Their adherent molecule expressions were assessed by flow cytometry. The results showed that the purity of the isolated CD34+ cells was (98.25+/-0.93)%. After co-culture on MSC layer for 6 days, the proportion of CD34+ cells of each unit was dropped to (60.4+/-6.32)% and (60.2+/-5.12)% respectively, but there was no significant difference from the control groups. The expressions of CD44, CD62L, CD184 and CD26 on CD34+ cells of each unit remained unaffected. The expression of CD162 was downregulated and CD54 was first increased but then dropped to the level before co-culture. But there was no significant difference between the experimental and control groups. In conclusion, co-culture of CD34+ cells from two units of CB may have no effects on the adherent molecule expressions of each other.
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Yao
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Zi-Min
authors.initials: ZM
authors.lastname: Sun
authors.forename: Hui-Lan
authors.initials: HL
authors.lastname: Liu
authors.forename: Liang-Quan
authors.initials: LQ
authors.lastname: Gen
authors.forename: Xing-Bing
authors.initials: XB
authors.lastname: Wang
mesh_terms: D018952:Antigens, CD34 / Q000378:metabolism; D001854:Bone Marrow Cells / Q000166:cytology; D015815:Cell Adhesion Molecules / Q000378:metabolism*; D018920:Coculture Techniques; D005312:Fetal Blood / Q000166:cytology* / Q000378:metabolism; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000378:metabolism; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology*
chemical_list: D018952:Antigens, CD34; D015815:Cell Adhesion Molecules