Utilization of the stable ectopic expression cell line as a model for the investigation of RIG-G gene / 中华血液学杂志
Chinese Journal of Hematology
;
(12): 795-798, 2007.
Article
Dans Chinois
| WPRIM
| ID: wpr-262948
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the biological function of RIG-G gene by establishing a cell line stably expressing RIG-G protein.</p><p><b>METHODS</b>Ectopic RIG-G gene was transfected into U937 cells by using Tet-off expression system. Changes before and after RIG-G expression were detected for cell growth, cell morphology, cell surface antigen and cell cycle regulating proteins.</p><p><b>RESULTS</b>RIG-G protein arrested the cells at G0/G1 phase and inhibited cell growth by increasing the cell cycle inhibitors P21 and P27. As compared to that in control group, the proportion of cells at G0/G1 phase in RIG-G-expressing cell group increased from (43.9 +/- 5.6)% to (63.9 +/- 2.3)% (P < 0.01). The rate of growth inhibition was (68.7 +/- 0.2)%. In addition, an increase in CD11C expression [(61.3 +/- 1.1)% vs. (18.0 +/- 0.4)% (P < 0.01)] and in cells with morphologic features of partial differentiation (smaller cell size, reduced nucleus-cytoplasm ratio, notched nucleus and coarse chromatin) was also observed in RIG-G-expressing cells.</p><p><b>CONCLUSIONS</b>RIG-G has potential abilities to inhibit cell proliferation and promote cell differentiation.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Physiologie
/
Plasmides
/
Transfection
/
Cycle cellulaire
/
Différenciation cellulaire
/
Cellules U937
/
Protéines et peptides de signalisation intracellulaire
/
Prolifération cellulaire
/
Inhibiteur p21 de kinase cycline-dépendante
/
Inhibiteur p27 de kinase cycline-dépendante
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Chinese Journal of Hematology
Année:
2007
Type:
Article
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