五指山猪近交系精原干细胞体外培养研究

对不同发育阶段五指山小型猪(WZSP)近交系的睾丸组织,采用不同的消化和培养方法进行了一系列的探索、研究。实验显示培养SSCs的最佳时限为仔猪出生后1~20日龄;对不同日龄仔猪采用不同消化方法,以DMEM为基础培养液并添加不同成分,34℃,5%CO2培养箱中饱和湿度条件下培养,可获得较好的分离培养结果;原代SSCs在培养8d后,SSCs开始增殖,桑椹状的SSCs集落半悬浮隆突生长;SSCs集落AKP染色,细胞呈阳性反应;对SSCs细胞团在STO饲养层上进行传代培养,SSCs贴壁良好,培养4d左右大部分SSCs集落和单细胞消失;采用曲精细管组织贴壁培养法也同样获得桑椹状SSCs集落,细胞集落在培养5d后出现,半悬浮生长。此外,睾丸组织在4℃PBS液中存放24h后,仍可作为SSCs分离、培养的材料。结果表明本研究初步掌握了WZSP近交系精原干细胞体外分离、培养的技术方法,为其进一步深入研究提供了技术方法和操作依据。

Studies on Spermatogonial Stem Cells Cultured in vitro of Wuzhishan Mini Porcine

The isolation and culturation of SSCs of different stage of Wuzhishan Mini Porcine (WZSP) with different way of enzymatic digestion and culturation were deaded in this study. The results of the experiment described are as the following: The proper time of isolation and culturation of SSCs of WZSP is 1-20 old days. Different old of piglets with different method. Using DMEM medium as a fundmental culture medium add different gradient at 34 degrees C in a water-saturated atmosphere of 95% air, 5% CO2. The mulberry-shaped SSCs clusters appeared as original generation in 7-8 days culture. The SSCs clusters developed half-suspendedly in the culture medium. SSCs alkaline phosphatase (AKP) staining expressed positively. Mouse embryonic fibroblast was used as feeder layer for the SSCs passage cultured, The SSCs show good attached attributes, but the number of SSCs decreased quickly after 4 days culture. By seminiferous cord fragment culturation can also appear SSCs clusters in 5 days, The SSCs clusters developed half-suspendedly in the culture medium. In addition, the testes placed in cold (4 degrees C) PBS banlanced salt solution for 24 h also can be used as a good matierials for preparation of SSCs. These results indicate that the method of solation and culturation of SSCs are very correct and efficient, all these can be utilized as a good reference for future studies.