| Title: |
Fluoxetine, an antidepressant, suppresses glioblastoma by evoking AMPAR-mediated calcium-dependent apoptosis |
| Authors: |
沈芯; Kao-Hui Liu, Shun-Tai Yang, Yen-Kuang Lin, Jia-Wei Lin, Yi-Hsuan Lee, Jia-Yi Wang, Chaur-Jong Hu, En-Yuan Lin, Shu-Mei Chen, Chee-Kin Then, Shing-Chuan Shen |
| Contributors: |
醫學科學研究所 |
| Publication Year: |
2015 |
| Collection: |
Taipei Medical University Repository (TMUR) |
| Subject Terms: |
Keywords: AMPA receptor; antidepressant; excitotoxicity; glioblastoma |
| Description: |
【104-1 升等】臺北醫學大學教師升等專門著作 ; 職別：專任 ; 送審等級：教授 ; 專門著作-學術 ; Abstract The efficacy of glioblastoma chemotherapy is not satisfactory; therefore, a new medication is expected to improve outcomes. As much evidence shows that antidepressants decrease cancer incidence and improve patients' quality of life, we therefore attempted to explore the potential for fluoxetine to be used to treat GBM and its possible underlying mechanism. The expression level of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) was determined using immunohistochemical staining and PCR analysis. The mechanism of fluoxetine-induced apoptosis of gliomas was elucidated. Computer modeling and a binding assay were conducted to investigate the interaction of fluoxetine with the AMPAR. The therapeutic effect of fluoxetine was evaluated using an animal model. We found that fluoxetine directly bound to AMPAR, thus inducing transmembrane Ca?? influx. The rise in the intracellular calcium concentration ([Ca??]i) causes mitochondrial Ca?? overload, thereby triggering apoptosis. AMPARs are excessively expressed in glioma tissues, suggesting that fluoxetine specifically executes glioma cells. Our in vivo study revealed that fluoxetine suppressed the growth of glioblastomas in brains of Nu/Nu mice, an effect similar to that produced by temozolomide. Our preclinical studies suggest fluoxetine, a commonly used antidepressant, might be selectively toxic to gliomas and could provide a new approach for managing this disease. |
| Document Type: |
article in journal/newspaper |
| File Description: |
104 bytes; text/html |
| Language: |
English |
| Relation: |
Oncotarget. 2015 Mar 10; 6(7): 5088-101; http://libir.tmu.edu.tw/handle/987654321/65806; http://libir.tmu.edu.tw/bitstream/987654321/65806/1/index.html |
| Availability: |
http://libir.tmu.edu.tw/handle/987654321/65806; http://libir.tmu.edu.tw/bitstream/987654321/65806/1/index.html |
| Accession Number: |
edsbas.CFB65EE8 |
| Database: |
BASE |