Establishment of STO Cell Lines Expressing Green Fluorescent Protein and Mouse Leukemia Inhibitory Factor.
10.19746/j.cnki.issn1009-2137.2019.02.048
- Author:
Chuan-Miao LIU
1
;
Hong-Jun LI
2
;
Tian-Hua YANG
2
;
Xiao-Huai YANG
3
;
Zheng-Hong LI
4
;
Yong-Hai LI
5
Author Information
1. Department of Infectious Diseases, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, Anhui Province, China.
2. Department of Pathophysiology, Bengbu Medical College, Bengbu 233030, Anhui Province, China.
3. Department of Urinary Surgery, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, Anhui Province, China.
4. Department of Pathophysiology, Bengbu Medical College, Bengbu 233030, Anhui Province, China .com E-mail: lizhbbmc@163.com.
5. Department of Pathophysiology, Bengbu Medical College, Bengbu 233030, Anhui Province, China E-mail: bbmcexperiment@gmail.com.
- Publication Type:Journal Article
- MeSH:
Animals;
Cell Differentiation;
Cell Line;
Cell Separation;
Embryonic Stem Cells;
Feeder Cells;
Green Fluorescent Proteins;
Leukemia Inhibitory Factor;
Mice
- From:
Journal of Experimental Hematology
2019;27(2):606-612
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To establish the STO cell lines expressing green fluorescent protein (GFP) and mouse leukemia inhibitory factor (LIF) , and try to culture the mouse embryonic stem cells (mESCs) by using the established STO-GFP-mLIF cells as the feeder layer.
METHODS:The lentiviral particles containing GFP and mLIF and puromycin-resistance gene were constructed and transduced into STO cell lines. The cell lines stably expressing GFP and mLIF genes were screened out. The expression level of the inserted exogenous LIF gene was tested by Western blot and ELISA. The STO-GFP-mLIF cells were treated with different concentrations of mitomycin C (5, 10, 15, 20 µg/ml) for different time (1.5, 2.5, 3, 3.5 hours) to prepare feeder layers and the cell proliferation level on feeder layer was observed. Mouse embryonic stem cells were cultured on mitomycin C-treated feeder layer and the growth of cell colonies was observed.
RESULTS:The expression level of LIF protein in STO-GFP-mLIF cells was up-regulated, as compared with STO cells (P＜0.05). It was confirmed that the optimal concentration and time for inhibiting the proliferetion of STO-GFP-mLIF cells by mitomycin C were 10 µg/ml and 3 hours respectively. The observation also found that the embryonic stem cells could develop into typic "birdnest" shaped stem cell colony on mitomycin C-treated feeder layer.
CONCLUSION:The stable STO cell lines effectively expressing green fluorescent protein and mouse leukemia inhibitory factor have been established successfully, which can maintain the undifferentiated state of mouse embryonic stem cells.
