中文摘要：

目的：探讨p38丝裂原活化蛋白激酶（p38MAPK）通路与细胞空泡形成的关系。方法应用茴香霉素、放线菌酮、p38MAPK抑制剂SB203580、JNK抑制剂SP600125处理HepG2、LM3、QBC939、Hela和A549细胞，光学显微镜和激光共聚焦显微镜观察细胞空泡化情况；Westernblot法检测p38MAPK等通路相关分子的表达水平；内质网红色荧光探针标记内质网，激光共聚焦显微镜观察内质网结构变化；溶酶体红色荧光探针标记溶酶体，激光共聚焦显微镜观察溶酶体荧光染色情况。结果（1）茴香霉素对HepG2细胞空泡有消除作用。（2）茴香霉素通过活化p38MAPK消除细胞空泡。（3）阻断p38MAPK诱导多种肿瘤细胞空泡形成。（4）阻断p38MAPK介导的空泡形成破坏内质网结构的整体性。（5）阻断p38MAPK介导的空泡形成具有可逆性。结论p38MAPK通路在调节细胞空泡形成中发挥了重要作用。

英文摘要：

Objective To investigate the role of the p38 MAPK pathway in the formation of cytoplasmic vacuoles .Methods Af-ter treated with Anisomycin ,SB203580 or SP600125 ,images of HepG2 ,LM3 ,QBC939 ,Hela and A549 cells were recorded by light microscopy and taken at a magnification of 400 ＆#215; .The effects of anisomycin ,SB203580 and SP600125 on the activity of p38 and JNK were measured by Western blot .LM3 and A549 cells were stained with the ER-tracker red and the lyso-tracker red and subjec-ted to confocal microscopy analysis .Results （1）Anisomycin could abolish cytoplasmic vacuolization of HepG2 cells .（2）p38 MAPK activation was responsible for anisomycin-induced cytoplasmic vacuolization abolishment .（3）p38 MAPK blocking initiated cytoplas-mic vacuoles formation in various cancer cell lines .（4）p38 MAPK blocking-induced cytoplasmic vacuoles disrupted the integrity of endoplasmic reticulum .（5）p38 MAPK blocking reversibly induced cytoplasmic vacuoles formation .Conclusion These observations provide direct evidence for a role of p38 MAPK signaling in regulating the formation of cytoplasmic vacuoles .