title: [Proliferation and apoptosis in vitro of umbilical cord blood CD34+CD38- hematopoietic early progenitor cells].
abstract: To cultivate CD34(+)CD38(-) cells isolated from umbilical cord blood of healthy puerperal women over a longer-period of time for observation of cell division, proliferation, apoptosis, and effects of stem cell factor on the growth of CD34(+)CD38(-) cells, with flow cytometry, CD34(+)CD38(-) cells were isolated from umbilical cord blood of 10 healthy puerperal women and cultivated in stem cell media with supplement of IL-3, IL-6, GM-CSF, EPO, IGF-1 and SCF 6 kinds cell growth stimulating factors for six months. The cell growth curves were established. The effects of stem cell factor on the growth of CD34(+)CD38(-) cells and cell apoptosis were investigated with the single cell gel electrophoresis technique and flow cytometry method, respectively. The results showed that CD34(+)CD38(-) cells isolated from umbilical cord blood were capable of proliferating after being cultivated in vitro over a longer-period of time with no evidence of the presence of excessive apoptosis. In conclusion, under appropriate culture conditions, CD34(+)CD38(-) hematopoietic early progenitor cells from umbilical cord blood can serve as a resource providing a large amount of primitive cells for transplantation therapy after a longer period of cultivation and proliferation in vitro.
authors.affiliation: Department of Medical Biology, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Tian
authors.forename: Shi-Ang
authors.initials: SA
authors.lastname: Huang
authors.forename: Fei-Li
authors.initials: FL
authors.lastname: Gong
authors.forename: Jin-E
authors.initials: JE
authors.lastname: Zheng
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: He
authors.forename: Jing
authors.initials: J
authors.lastname: Yang
authors.forename: Zhong
authors.initials: Z
authors.lastname: Chen
mesh_terms: D051997:ADP-ribosyl Cyclase 1 / Q000032:analysis*; D000328:Adult; D018952:Antigens, CD34 / Q000032:analysis*; D017209:Apoptosis; D049109:Cell Proliferation; D002478:Cells, Cultured; D005260:Female; D005312:Fetal Blood / Q000166:cytology* / Q000276:immunology; D005434:Flow Cytometry; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000276:immunology; D006801:Humans
chemical_list: D018952:Antigens, CD34; D051997:ADP-ribosyl Cyclase 1