PMID- 23643088 OWN - NLM STAT- MEDLINE DCOM- 20130619 LR - 20181202 IS - 1007-8738 (Print) IS - 1007-8738 (Linking) VI - 29 IP - 3 DP - 2013 Mar TI - [Effect of GFP-containing lentivirus infection on the expression of octamer transcription factor 4 in human umbilical cord mesenchymal stem cells]. PG - 292-6 AB - OBJECTIVE: To infect human umbilical cord mesenchymal stem cells (hUCMSCs) with lentivirus carrying green fluorescence protein (GFP) and observe its effect on octamer binding transcription factor 4 (Oct4) expression. METHODS: Mesenchymal stem cells isolated from human umbilical cord by tissue adherence method were cultured and detected for the the surface markers by flow cytometry. HUCMSCs were infected with lentivirus carrying GFP at different multiplicity of infection (MOI). GFP expression efficiency was observed using the fluorescence microscope and flow cytometry to obtain optimal MOI value. The experiment included non-transfection group and the GFP transfection group. The effect of GFP lentivirus on cell proliferation was evaluated by MTT. Oct4 expression in hUCMSCs cultured in vitro continuously for 2 and 8 weeks was measured by quantitative reverse transcriptase PCR (qRT-PCR) and immunofluorescence staining. RESULTS: HUCMSCs displayed fusiform shape as fibroblasts in vitro. Flow cytometry revealed that the third-passage cells highly expressed CD29, CD105 and CD90, and lowly expressed CD34 and CD45. At 96 h after infection with GFP lentivirus (MOI=20), GFP positive rate of hUCMSCs was more than 75%, the highest level. MTT showed nearly no change in cell proliferation in the transfected group in comparison with the non-transfection group (P>0.05). The relative expression of Oct4 detected by qRT-PCR in cells cultured for 2 and 8 weeks were 0.9075+/-0.0124 and 0.8600+/-0.0135, respectively. Immunofluorescence staining showed that Oct4 expression was localized in the nucleus of cells. CONCLUSION: Lentivirus-mediated GFP gene can be expressed in hUCMSCs and has no significant effect on the expression of Oct4. FAU - Tang, Li AU - Tang L AD - Department of Cardiology, Chongqing Medical University, Chongqing, China. FAU - Chang, Jing AU - Chang J LA - chi PT - Journal Article PL - China TA - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi JT - Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology JID - 101139110 RN - 0 (Integrin beta1) RN - 0 (Octamer Transcription Factor-3) RN - 0 (POU5F1 protein, human) RN - 0 (Receptors, Tumor Necrosis Factor, Type I) RN - 0 (Thy-1 Antigens) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Animals MH - Cell Proliferation MH - Female MH - Gene Expression MH - Gene Expression Regulation MH - Green Fluorescent Proteins/*genetics MH - Humans MH - Infant, Newborn MH - Integrin beta1/metabolism MH - Lentivirus/*genetics MH - Mesenchymal Stem Cells/*metabolism MH - Octamer Transcription Factor-3/*genetics MH - Pregnancy MH - Receptors, Tumor Necrosis Factor, Type I/metabolism MH - Thy-1 Antigens/metabolism MH - Transfection/*methods MH - Umbilical Cord/*cytology EDAT- 2013/05/07 06:00 MHDA- 2013/06/20 06:00 CRDT- 2013/05/07 06:00 PHST- 2013/05/07 06:00 [entrez] PHST- 2013/05/07 06:00 [pubmed] PHST- 2013/06/20 06:00 [medline] PST - ppublish SO - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2013 Mar;29(3):292-6.