https://scholars.lib.ntu.edu.tw/handle/123456789/564614
標題: | Leptin induces migration and invasion of glioma cells through MMP-13 production | 作者: | Yeh W.-L. Lu D.-Y. MING-JEN LEE WEN-MEI FU |
公開日期: | 2009 | 卷: | 57 | 期: | 4 | 起(迄)頁: | 454-464 | 來源出版物: | GLIA | 摘要: | Leptin, the product of the obese gene, plays an important role in the regulation of body weight by coordinating metabolism, feeding behavior, energy balance, and neuroendocrine responses. However, regulation of leptin gene expression in the central nervous system is different from that in the adipocytes. In addition, leptin has been found in many tumor cell lines and has been shown to have mitogenic and angiogenic activity in a number of cell types. Glioma is the most common primary adult brain tumor with poor prognosis because of the spreading of tumor cell to the other regions of brain easily. Here we found that malignant C6 glioma cells expressed more leptin and leptin receptors than nonmalignant astrocytes. Furthermore, it was found that exogenous application of leptin enhanced the migration and invasion of C6 glioma cells. In addition, we found that the expression of matrix metalloproteinase-13 (MMP-13) but not of MMP-2 and MMP-9 was increased in response to leptin stimulation. The leptin-induced increase of cell migration and invasion was antagonized by MMP-13 neutralizing antibody or silencing MMP-13. The up-regulation of MMP-13 induced by leptin was mainly through p38 MAP kinase and NF-κB pathway. In addition, migration-prone sublines demonstrate that cells with increasing migration ability had more expression of MMP-13 and leptin. Taken together, these results indicate that leptin enhanced migration and invasion of C6 glioma cells through the increase of MMP-13 production. ? 2008 Wiley-Liss, Inc. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/564614 | ISSN: | 8941491 | DOI: | 10.1002/glia.20773 | SDG/關鍵字: | collagenase 3; gelatinase A; gelatinase B; immunoglobulin enhancer binding protein; leptin; leptin receptor; messenger RNA; mitogen activated protein kinase p38; neutralizing antibody; short hairpin RNA; animal cell; article; astrocyte; cancer invasion; cell migration; controlled study; enzyme synthesis; glioma cell; metastasis; nonhuman; priority journal; protein expression; rat; signal transduction; transient transfection; tumor cell; upregulation; Animals; Antibodies; Astrocytes; Brain Neoplasms; Cell Line, Tumor; Cell Movement; Dose-Response Relationship, Drug; Enzyme Inhibitors; Gene Expression Regulation, Neoplastic; Glioma; Humans; Leptin; Matrix Metalloproteinase 13; Neoplasm Invasiveness; p38 Mitogen-Activated Protein Kinases; Protein-Serine-Threonine Kinases; Rats; Receptors, Leptin; RNA, Messenger; Signal Transduction; Transfection |
顯示於: | 藥理學科所 |
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