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, 40 (3), 353-9

Down-regulation of Stat3 Decreases Invasion Activity and Induces Apoptosis of Human Glioma Cells

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Down-regulation of Stat3 Decreases Invasion Activity and Induces Apoptosis of Human Glioma Cells

Fuxue Chen et al. J Mol Neurosci.

Abstract

Gliomas are the most common type of primary brain tumors. Despite the improvement in current treatments for gliomas, including surgical resection, radiation, and chemotherapy, there has been very little progress in curing this kind of disease. Stat3 is a member of signal transducer and activator of transcription family. It plays an important role in regulating cell survival, invasion, and apoptosis. This study investigated the influence of low-level expression of Stat3 on invasion and apoptosis in U251 cells. Our data showed that Stat3 is constitutively expressed in human gliomas cell line U251. The invasion activity in U251 cells was weakened and the apoptosis in U251 cells was induced after down-regulation of Stat3. In addition, down-regulation of Stat3 can suppress the expression of MMP-2, Bcl-xL and survivin but not 67LR. These results further indicate that Stat3 plays a key role in the invasion and apoptosis of human glioma cell line U251.

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