This work was supported by grants from The National Natural Science Foundation of China (30330240,30125013,30371772), The Natural Science Foundation of Guangdong Province (37047), Cheung King Scholars Programme to TM Gao.
In order to establish an in vitro attachment culture method for obtaining highly purified neural progenitor cells (HPCs) from the hippocampus of adult Wistar rats and to identify functional L-type calcium channels in those cells, the adult rat hippocampal tissue was dispersed into a single cell suspension, and the dissociated cells were cultured in serum-free DMEM/F12 medium containing epidermal growth factor (EGF), basic fibroblast growth factor (bFGF), N2 and B27 supplement. After six passages, the proportion of nestin-positive cells reached to 99.9%. Following fourteen-days culture in differentiation medium, neuron-like and astrocyte-like cells were observed, which expressed β-tubulin Ⅲ (Tuj1) and glial fibrillary acidic protein (GFAP), respectively. Immunofluorescent double labeling and Western blot showed an expression of Cav1.2α1C and Cav1.3α1D subunits in HPCs, and functional L-type calcium channels were confirmed by confocal microscopic Ca2+ imaging. Moreover, L-type calcium channel currents were recorded in those cells by using whole-cell patch clamp techniques. The results indicated that adult rat HPCs express functional L-type calcium channels.
FENG Jin-Li, HU De-Hui, CHEN Ming, TIAN Ying-Hong, SHI Zhi-Min, YANG Jian-Ming, ZHU Xin-Hong, LI Xiao-Wen, GAO Tian-Ming. Hippocampal Neural Progenitor Cells Express Functional L-Type Calcium Channel in Adult Rat[J]. Progress in Biochemistry and Biophysics,2005,32(9):822-828
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