OBJECTIVE: To study the effect of human bone marrow mesenchymal stem cell (bMSCs) modified by the adenovirus-mediated exogenous wnt5a gene on the hematopoietic function of bone marrow and the inhibition of the growth of HL60 leukemia cells. METHODS: BMSCs were identified through flow cytometry and modified by Ad5-wnt5a, The transfection rate of wnt5a gene in bMSCs was detected by RT-PCR. The cell growth curves were detected in different groups (bMSCs group, Ad5-GFP group, Ad5-wnt5a group). Ad5-wnt5a-bMSCs and HL60 cells were co-cultured, the surface differentiation antigen (CD13, CD14, CD68) and cell cycles were detected by immunocytochemical and flow cytometry in different groups (HL60 cell group, HL60+bMSCs group, HL60+ Ad5-GFP group, HL60+ Ad5-wnt5a group), respectively. RESULTS: Adenovirus-mediated exogenous wnt5a gene was transfected into bMSCs. The expression of differentiation antigens of CD14, CD68 in HL60+Ad5-wnt5a group were higher than those in control group (P < 0.05), the expression of differentiation antigen CD13 were not significant difference in different groups (P > 0.05). Compared with control group, the cell cycle in HL60+ Ad5-wnt5a group was blocked at G2 phase in the fourth day. CONCLUSION: Exogenous wnt5a gene can promote the growth of bMSCs, and induce HL60 cells to differentiation and maturation.
OBJECTIVE: To study the effect of human bone marrow mesenchymal stem cell (bMSCs) modified by the adenovirus-mediated exogenous wnt5a gene on the hematopoietic function of bone marrow and the inhibition of the growth of HL60 leukemia cells. METHODS: BMSCs were identified through flow cytometry and modified by Ad5-wnt5a, The transfection rate of wnt5a gene in bMSCs was detected by RT-PCR. The cell growth curves were detected in different groups (bMSCs group, Ad5-GFP group, Ad5-wnt5a group). Ad5-wnt5a-bMSCs and HL60 cells were co-cultured, the surface differentiation antigen (CD13, CD14, CD68) and cell cycles were detected by immunocytochemical and flow cytometry in different groups (HL60 cell group, HL60+bMSCs group, HL60+ Ad5-GFP group, HL60+ Ad5-wnt5a group), respectively. RESULTS: Adenovirus-mediated exogenous wnt5a gene was transfected into bMSCs. The expression of differentiation antigens of CD14, CD68 in HL60+Ad5-wnt5a group were higher than those in control group (P < 0.05), the expression of differentiation antigen CD13 were not significant difference in different groups (P > 0.05). Compared with control group, the cell cycle in HL60+ Ad5-wnt5a group was blocked at G2 phase in the fourth day. CONCLUSION: Exogenous wnt5a gene can promote the growth of bMSCs, and induce HL60 cells to differentiation and maturation.