Establishment of an epidermal growth factor-dependent, multipotent neural precursor cell line |
| |
Authors: | Yumiko Nakagaito Motonobu Satoh Haruhiko Kuno Toshi Iwama Masao Takeuchi Akira Hakura Touho Yoshida |
| |
Institution: | (1) Institute for Fermentation, Osaka (IFO), 2-17-85, Juso-honmachi, Yodogawa-ku, 532 Osaka, Japan;(2) Pharmaceutical Research Division, Takeda Chemical Industries, Ltd., 532 Osaka, Japan;(3) Department of Tumor Virology, Research Institute for Microbial Diseases, Osaka University, 532 Osaka, Japan |
| |
Abstract: | Summary We have established a multipotent clonal cell line, named MEB5, from embryonic mouse forebrains after the infection of a retrovirus
carrying E7 oncogene of human papillomavirus type 16. MEB5 cells proliferated in serum-free, epidermal growth factor (EGF)-supplemented
medium. They expressed markers for neural precursor cells (nestin, A2B5, and RC1) and did not express markers for neurons
(class III β-tubulin), astrocytes (glial fibrillary acidic protein), and oligodendrocytes (galactocerebroside). MEB5 cells
were stably maintained in an undifferentiated state with a diploid karyotype in the presence of EGF. When they were deprived
of EGF, about 50% of the cells died due apoptosis within 24 h. The remaining cells differentiated into neurons, astrocytes,
or oligodendrocytes within 2 wk. The newly developed cells with neuronal morphology were immunoreactive for γ-aminobutyric
acid and exhibited neuronal electrophysiological properties. When MEB5 cells were treated with leukemia inhibitory for 7 d,
they were induced to differentiate exclusively into astrocytes. These results inducate that MEB5 is a cell line with characteristics
of EGF-dependent, multipotent neural precursor cells. This cell line should provide a good model system to study the mechanisms
of survival, proliferation, and differentiation of the multipotent precursor cells in the central nervous system. |
| |
Keywords: | apoptosis central nervous system E7 oncogene leukemia inhibitory factor |
本文献已被 SpringerLink 等数据库收录! |
|