NGF诱导PC12细胞向神经元的分化  

Differentiation of PC12 cells into neurons induced by NGF

作　　者：王秀力[1] 陈东[2] 刘佳梅[2] 

机构地区：[1]吉林大学基础医学院组织学与胚胎学教研室,吉林长春130021 [2]广东医学院组织学与胚胎学教研室,广东湛江524023

出　　处：《吉林大学学报（医学版）》2007年第5期827-830,共4页Journal of Jilin University：Medicine Edition

基　　金：教育部高等学校博士学科点专项科研基金资助课题(20030183048);吉林大学种子基金资助课题(2005)

摘　　要：目的:研究NGF诱导PC12细胞向神经元的分化情况。方法:实验分为10、20、50和80μg.L-1NGF组及含10%胎牛血清的对照组。不同浓度的NGF组均诱导PC12细胞72h,在24、48和72h分别观察细胞的突起长度和细胞最大直径的变化情况;在诱导72h后利用免疫细胞化学技术,观察不同剂量NGF作用后PC12细胞向MAP2阳性细胞分化的情况。结果:20、50和80μg.L-1NGF组MAP2阳性细胞数明显高于对照组,且以50μg.L-1组最为明显(P<0.05)。与对照组比较,加入NGF组分化的细胞其突起和细胞直径明显增长和增大,以50μg.L-1组最为明显(P<0.01)。结论:NGF能够诱导PC12细胞向神经元分化,50μg.L-1的NGF浓度是诱导PC12细胞向神经元分化的最适浓度。Objective To study the condition of pheochromocytoma cells （PC12 cells） differentiation into neurons induced by nerve growth factor （NGF）. Methods There were five groups ： 10, 20, 50, and 80 μg · L^-1 NGF groups and control group which contained 10% fetal calf serum. PC12 cells were exposed to NGF with different concentrations for 72 h and the lengh of neurite and max diameter of PC12 cells were observed at 24, 48, and 72 h, respectively. The expression of MAP2 was detected by immunocytochemistry after PC12 cells were exposed to NGF for 72 h . Results The number of MAP2 positive cells was significantly increased in 20, 50, and 80 μg · L^-1 groups compared with control group and the most significant concentration was 50μg · L^-1 （P〈0.05）. The length of total primary neurite and max diameter of PC12 cells in 20, 50, and 80μg · L^-1 NGF groups were obviously longer and bigger than those in control group and the most significant concentration also was 50 μg · L^-1 （P〈 0.01）. Conclusion PC12 cells could differentiate into neurons induced by NGF, and 50 μg · L^-1 is the optimal concentration in which NGF could induce PC12 cells to differentiate into neurons.

关 键 词：PC12细胞 神经生长因子 分化 

分 类 号：R322.85[医药卫生—人体解剖和组织胚胎学]