Effect of SDF-1/CXCR4 on the hematopoietic-supporting activity of bone marrow mesenchymal stem cells / 基础医学与临床
Basic & Clinical Medicine
;
(12)2006.
Article
in Chinese
| WPRIM
| ID: wpr-590846
ABSTRACT
Objective To study the effect of stromal cell-derived factor-1(SDF-1)/CXCR4 on the proliferation of CD34+ hematopoietic stem/progenitor cells(HSPCs) supported by bone marrow mesenchymal stem cells(MSCs).Methods Rat bone marrow MSCs were plated as feeder layer in long-term cultures(LTC) with bone marrow CD34+ cells in vitro.Cultures were weekly supplemented with SDF-1,anti-SDF-1 antibody,or anti-CXCR4 antibody separately for 5 weeks.The hematopoietic-supporting activity was evaluated by the number of CD34+ cells and colony forming cell(CFC).To assess the effect of SDF-1/CXCR4 on CD34+ cell proliferation cycle,killing assays were carried out and proliferation indexes were calculated.Expression of SDF-1 and CXCR4 in MSCs and CD34+ cells were determined by flow cytometry.SDF-1 in MSC-and CD34+ cell-conditioned medium was also measured by ELISA.Results The number of CD34+ cells,CFC and proliferation indexes were significantly increased in treat-ment with SDF-1(P
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Basic & Clinical Medicine
Year:
2006
Type:
Article
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