外源性PTEN抑癌基因对高转移性黏液表皮样癌细胞系形态的影响

Effects of the exogenous PTEN tuomr suppressor gene on morphology of the highly metastatic mucoepidermoid carcinoma cell line M3SP2

目的 :观察外源野生型PTEN基因对高转移性黏液表皮样癌细胞系形态的影响。方法 :应用倒置显微镜观察法、HE染色观察、扫描电镜及透射电镜观察法 ,比较野生型PTEN抑癌基因转染的黏液表皮样癌细胞M 3SP2 PTEN与对照的黏液表皮样癌细胞M 3SP2 pBp的形态学差异。 结果 :M 3SP2 pBp细胞体外生长活跃 ,细胞数量多 ,核分裂相多 ,细胞表面微绒毛丰富 ,细胞核切迹明显 ,细胞质中线粒体丰富 ;M 3SP2 PTEN细胞生长缓慢 ,分裂相很少 ,细胞数量少 ,部分细胞空泡变性 ,染色质凝集 ,细胞膜彭出 ,线粒体数量少并发生肿胀 ,较多的溶酶体融合。结论 :外源野生型PTEN基因的转染能导致体外培养的高转移性黏液表皮样癌细胞变性、坏死或凋亡。

Objeact:To evaluate the effects of the exogenous PTEN gene on morphology of the highly metastatic mucoepidermoid carcinoma cell line M3SP2. Methods: Morphological observation of vehicle transfected M3SP2-pBp cells and PTEN transfected M3SP2-PTEN cells was performed with inverted microscope, HE staining and optical microscope, scanning electronic microscope and transmisson electronic microscope. Results: Compared with the control cells of M3SP2-pBp, the exogenous PTEN expressing cells M3SP2-PTEN showed morphological changes, such as vacuole denaturalization, shrinkage, less microvillus, chondriosome swelling, lysosome amalgamation, and chromatin agglutination. Conclusion: The exogenous PTEN gene may induce denaturalization, necrosis, and apoptosis of the highly metastatic mucoepidermoid carcinoma cells.