Background: Metalloproteinase-9 (MMP-9) and aquaporin-4 (AQP4) have been individually reported in glioma development. Here, we co-analyzed their expression in multiple forms of human glioma tissues graded from II to IV. Material and methods: Levels of MMP-9 and AQP4 were evaluated on 50 resected human glioma tissues using immunohistochemistry. Protein levels of both molecules were evaluated by a staining score system based on the percentage of positive cells/staining degree in each dot section. The transwell method was also used to discriminate fast migrating cells and slow migrating cells, in which expression of both MMP-9 and AQP4 was investigated by using immunofluorescence. Results: The staining score of MMP-9 displayed a positively tumor grade dependent manner, whereas AQP4 expression showed a negatively tumor grade dependent manner The nuclear translocation of both molecules was observed in astrocytomas with glioblastoma transition, or glioblastoma tissues. Fast migrating cells contain more AQP4, whereas more MMP-9 was localized in slow migrating cells. Conclusions: Our findings suggest differential expression patterns of MMP-9 and AQP4 in different grades of gliomas. Nuclear translocation of MMP-9 and AQP4 may exert more functions in glioblastoma transition or deterioration. Co-analysis of MMP-9 and AQP4 may help to identify tumor type and their progression stages.
基金:
National Natural Science Foundation of ChinaNational Natural Science Foundation of China [81171138, 30840083]; Beijing Natural Science FoundationBeijing Natural Science Foundation [7102028]
第一作者机构:[1]Shantou Univ, Coll Med, Ctr Neurosci, Shantou 515041, Guangdong, Peoples R China;[2]Capital Med Univ, Beijing Neurosurg Inst, Beijing 100050, Peoples R China
通讯作者:
通讯机构:[1]Shantou Univ, Coll Med, Ctr Neurosci, Shantou 515041, Guangdong, Peoples R China;[2]Capital Med Univ, Beijing Neurosurg Inst, Beijing 100050, Peoples R China
推荐引用方式(GB/T 7714):
Zhao Wei-Jiang,Zhang Wei,Li Gui-Lin,et al.Differential expression of MMP-9 and AQP4 in human glioma samples[J].FOLIA NEUROPATHOLOGICA.2012,50(2):176-186.
APA:
Zhao, Wei-Jiang,Zhang, Wei,Li, Gui-Lin,Cui, Yun,Shi, Zhong-Fang&Yuan, Fang.(2012).Differential expression of MMP-9 and AQP4 in human glioma samples.FOLIA NEUROPATHOLOGICA,50,(2)
MLA:
Zhao, Wei-Jiang,et al."Differential expression of MMP-9 and AQP4 in human glioma samples".FOLIA NEUROPATHOLOGICA 50..2(2012):176-186