title: [Biological characteristics of human fetal osteoblastic 1.19 cell line].
abstract: This study was aimed to investigate the biological characteristics of osteoblasts and their hematopoietic supportive function by using human fetal osteoblastic cell line 1.19 (hFOBs) as a model. The pluripotency markers (Oct-4, Rex-1, hTERT) of hFOBs were analyzed by RT-PCR, the multilineage differentiation experiments were conducted in vitro. Flow cytometry (FCM) was used to identify the surface markers of hFOBs, and RT-PCR was used to analyze their hematopoietic cytokine expression in comparison with bone marrow mesenchymal stem cell (BM-MSC). The results showed that hFOBs expressed several ESC pluripotency markers including Oct-4 and Rex-1, except hTERT. Moreover, hFOBs could also undergo multilineage differentiation into the mesodermal lineages of adipocytic cell types in addition to its predetermined pathway, the mature osteoblast. Both hFOBs and BM-MSC expressed CD44, CD73 (SH3), CD105 (SH2) and CD90 (Thy1), and lack expression of CD34, CD45, or HLA-DR surface molecules. In addition, both hFOBs and BM-MSC expressed SCF, IL-6, and SDF-1alpha mRNA, but only hFOBs could express GM-CSF and G-CSF. It is concluded that human fetal osteoblastic cell line 1.19 may provide a good model to study the osteoblastic regulation role in hematopoiesis in vitro.
authors.affiliation: The First Affiliated Hospital, Suzhou University, Jiangsu Institute of Hematology, Suzhou 215006, Jiangsu Province, China.
authors.forename: Wen-Ming
authors.initials: WM
authors.lastname: Chen
authors.forename: Zi-Xing
authors.initials: ZX
authors.lastname: Chen
authors.forename: Jian-Nong
authors.initials: JN
authors.lastname: Cen
authors.forename: Jun
authors.initials: J
authors.lastname: He
authors.forename: Xue-Li
authors.initials: XL
authors.lastname: Jiao
authors.forename: Ya-Fang
authors.initials: YF
authors.lastname: Wu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Qiao-Cheng
authors.initials: QC
authors.lastname: Qiu
authors.forename: Lan
authors.initials: L
authors.lastname: Dai
mesh_terms: D002454:Cell Differentiation / Q000502:physiology*; D002460:Cell Line; D005333:Fetus; D006410:Hematopoiesis / Q000502:physiology*; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000502:physiology; D008954:Models, Biological; D010006:Osteoblasts / Q000166:cytology* / Q000502:physiology*