摘要
目的 探讨银杏内酯B对神经干细胞分化为神经元的促进作用。 方法 采用无血清培养和单克隆实验技术在体外分离培养出大量来源于同一细胞的单细胞克隆球 ,并将其均匀种植于 2 4孔培养板中 ,分 3组分别加入含银杏内酯B、BDNF和不加任何细胞因子的完全培养液。培养 7d和 14d后终止 ,用神经元特异性标记物微管相关蛋白 2 (MAP 2 )的单克隆抗体进行免疫荧光标记 ,荧光显微镜下观察和计数MAP 2标记的阳性细胞并对细胞面积和周长进行图像处理。 结果 两个时期银杏内酯组MAP 2阳性细胞数均明显多于单纯对照组而少于BDNF组 ;分化 7d和 14d时银杏内酯组MAP 2阳性细胞的面积和周长明显大于单纯对照组 ,而略小于BDNF组。结论 银杏内酯B亦具有类似BDNF促进神经干细胞分化为神经元的作用。
Objective To evaluate the effects of ginkgolide B on inducing neural stem cells differentiating into neurons. Methods A great deal of single cell clone neurospheres raised from single cell and proliferated by the technology of serum\|free culture and single cell clone.Suspensions of cell clone neurospheres were plated equably into 24 well plates and added into the 10% FBS differentiation medium containing ginkgolide B,BDNF or without any factor.Cultures were terminated at 7 and 14 days respectively.MAP\|2,neuron\|specific marker,were used to mark neurons by immunofluorescence.MAP\|2 positive neurons were observed and counted by fluorescence microscope.The area and perimeter of these positive neurons were analyzed. Results The number of MAP\|2 positive neurons in ginkgolide B group is more than that in the control group in two periods.The area and perimeter of MAP\|2 positive neurons in ginkgolide B group were markedly larger than those in the control group at 7 and 14 days after cultured,but it's less than those in the BDNF group.Conclusion\ Neural stem cells can be induced to differentiate into neurons by ginkgolide B which has the similar role to BDNF.\;[
出处
《解剖学报》
CAS
CSCD
北大核心
2003年第4期367-371,共5页
Acta Anatomica Sinica
基金
江苏省自然科学基金资助 (BK9914 0 )
