培养的大鼠脊髓神经元中微管相关蛋白5与溶酶体的相关性

目的 探讨微管相关蛋白5(MAP5)与溶酶体之间的相互关系。方法 神经细胞培养、免疫荧光细胞化学方法、激光共聚焦扫描显微镜。结果 在培养脊髓神经元中，MAP5及组织蛋白酶D均分布在胞质及突起中，融合图像中两者分布大致相似。分别使用Nocodazole及PMA处理后MAP5及组织蛋白酶D在培养脊髓神经元的变化具有一致性。结论 提示MAP5和溶酶体的形态及分布依赖于微管的完整性。

INTERRELATION BETWEEN MICROTUBULE-ASSOCIATED PROTEIN 5 AND LYSOSOME IN CULTURED SPINAL NEURONS FROM THE RAT

Objective To investigate the interrelation between microtubule associated protein 5 and lysosome in cultured spinal neurons. Methods Neuron culture, immunofluorescence cytochemistry, laser confocal scanning microscope were used. Results In cultured spinal neurons, both of MAP5 and calthepsin D were distributed in cytoplasm and processes. In merged pictures, the distribution of MAP5 and calthepsin D was almost similar. When nocodazole was employed, the distribution of MAP5 and calthepsin D changed simultaneously. Both fluorescence distributed in cytoplasm was uneven and the process was shorter. When PMA was employed, the distribution of red and green fluorescence became reticulum and spread toward membrane. The soma enlarged and the process displayed certain direction accompanying adjacent processes interlinked.Conclusion In cultured spinal neurons, the distributions of MAP5 and lysosomes were almost similar. Both were in cytoplasm and process. Nocodazole and PMA caused reverse change for the distribution of MAP5 and lysosomes. The distribution of MAP5 and calthepsin D treatel with Nocodazole was unregulated, while PMA was regulated and loose. These results suggested that MAP5 and lysosomes were interrelated between structure and function. Both of them were depended on the integrity of microtubule.