Abstract:
BACKGROUND:Temozolomide-resistant (TMZ-R) glioblastoma is very difficult to treat, and a novel approach to overcome resistance is needed. MATERIALS AND METHODS:The efficacy of a combination treatment of STAT3 inhibitor, STX-0119, with rapamycin was investigated against our established TMZ-resistant U87 cell line. RESULTS:The growth-inhibitory effect of the combination treatment was significant against the TMZ-R U87 cell line (IC50: 78 μM for STX-0119, 30.5 μM for rapamycin and 11.3 μM for combination of the two). Western blotting analysis demonstrated that the inhibitory effect of STX-0119 on S6 and 4E-BP1 activation through regulation of YKL-40 expression occurred in addition to the inhibitory effect of rapamycin against the mTOR pathway. CONCLUSION:These results suggest that the STAT3 pathway is associated with the mTOR downstream pathway mediated by YKL-40 protein, and the combination therapy of the STAT3 inhibitor and rapamycin could be worth developing as a novel therapeutic approach against TMZ-resistant relapsed gliomas.
journal_name
Cancer Genomics Proteomicsjournal_title
Cancer genomics & proteomicsauthors
Miyata H,Ashizawa T,Iizuka A,Kondou R,Nonomura C,Sugino T,Urakami K,Asai A,Hayashi N,Mitsuya K,Nakasu Y,Yamaguchi K,Akiyama Ydoi
10.21873/cgp.20021subject
Has Abstractpub_date
2017-01-02 00:00:00pages
83-91issue
1eissn
1109-6535issn
1790-6245pii
14/1/83journal_volume
14pub_type
杂志文章abstract::Cellular signal transduction pathways and gene expression are tightly regulated to accommodate changes in response to physiological environments. In the current study, molecules were identified that are activated as a result of intracellular signaling and immediately expressed as mRNA in MCF-7 breast cancer cells shor...
journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
pub_type: 杂志文章,评审
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更新日期:2012-09-01 00:00:00
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journal_title:Cancer genomics & proteomics
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更新日期:2005-07-01 00:00:00
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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更新日期:2010-03-01 00:00:00
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journal_title:Cancer genomics & proteomics
pub_type: 杂志文章
doi:
更新日期:2011-09-01 00:00:00
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journal_title:Cancer genomics & proteomics
pub_type: 杂志文章
doi:
更新日期:2007-07-01 00:00:00
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journal_title:Cancer genomics & proteomics
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更新日期:2008-01-01 00:00:00
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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doi:
更新日期:2015-03-01 00:00:00
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journal_title:Cancer genomics & proteomics
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更新日期:2006-03-01 00:00:00
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journal_title:Cancer genomics & proteomics
pub_type: 杂志文章
doi:
更新日期:2005-11-01 00:00:00
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journal_title:Cancer genomics & proteomics
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doi:
更新日期:2011-07-01 00:00:00
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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journal_title:Cancer genomics & proteomics
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