Abstract:
:Retaspimycin hydrochloride (IPI-504), an Hsp90 (heat shock protein 90) inhibitor, has shown activity in multiple preclinical cancer models, such as lung, breast and ovarian cancers. However, its biological effects in gliomas and normal brain derived cellular populations remain unknown. In this study, we profiled the expression pattern of Hsp90α/β mRNA in stable glioma cell lines, multiple glioma-derived primary cultures and human neural stem/progenitor cells. The effects of IPI-504 on cell proliferation, apoptosis, motility and expression of Hsp90 client proteins were evaluated in glioma cell lines. In vivo activity of IPI-504 was investigated in subcutaneous glioma xenografts. Our results showed Hsp90α and Hsp90β expression levels to be patient-specific, higher in high-grade glioma-derived primary cells than in low-grade glioma-derived primary cells, and strongly correlated with CD133 expression and differentiation status of cells. Hsp90 inhibition by IPI-504 induced apoptosis, blocked migration and invasion, and significantly decreased epidermal growth factor receptor levels, mitogen-activated protein kinase and/or Akt activities, and secretion of vascular endothelial growth factor in glioma cell lines. In vivo study showed that IPI-504 could mildly attenuate tumor growth in immunocompromised mice. These findings suggest that targeting Hsp90 by IPI-504 has the potential to become an active therapeutic strategy in gliomas in a selective group of patients, but further research into combination therapies is still needed.
journal_name
J Neurooncoljournal_title
Journal of neuro-oncologyauthors
Di K,Keir ST,Alexandru-Abrams D,Gong X,Nguyen H,Friedman HS,Bota DAdoi
10.1007/s11060-014-1579-ysubject
Has Abstractpub_date
2014-12-01 00:00:00pages
473-81issue
3eissn
0167-594Xissn
1573-7373journal_volume
120pub_type
杂志文章abstract::The relation between hospital volume and outcomes for patients with glioblastoma is unknown. We undertook this study to determine the effect of hospital volume on treatment received and its effect on survival in patients with glioblastoma. We included patients from the National Cancer Database diagnosed with a gliobla...
journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
abstract::Carcinomatous meningitis (CM) occurs in less than 10% of cancer patients. Although patients frequently present with a focal complaint, multifocal signs are often found following careful neurological examination. The gold standard for diagnosis remains the demonstration of neoplastic cells in the cerebrospinal fluid. D...
journal_title:Journal of neuro-oncology
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章,多中心研究
doi:10.1007/s11060-011-0574-9
更新日期:2011-11-01 00:00:00
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journal_title:Journal of neuro-oncology
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doi:10.1007/s11060-014-1553-8
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journal_title:Journal of neuro-oncology
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更新日期:2015-09-01 00:00:00
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journal_title:Journal of neuro-oncology
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更新日期:1997-07-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-020-03620-7
更新日期:2020-09-01 00:00:00
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doi:10.1007/s11060-014-1410-9
更新日期:2014-05-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章,评审
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journal_title:Journal of neuro-oncology
pub_type: 临床试验,杂志文章
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更新日期:2002-01-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-018-2959-5
更新日期:2018-11-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-019-03192-1
更新日期:2019-07-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-010-0274-x
更新日期:2011-02-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章,meta分析
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更新日期:2019-09-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1023/a:1022554824129
更新日期:2003-02-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章,评审
doi:10.1007/s11060-011-0793-0
更新日期:2012-05-01 00:00:00
abstract::We previously showed that inhibition of the platelet-derived growth factor receptor (PDGFR) blocks the survival and migration of medulloblastoma cells. Identification of in vitro PDGFR-targeting pharmacologic agents that are suitable for preclinical testing in medulloblastoma models in vivo will be critical for effici...
journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-010-0259-9
更新日期:2011-01-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1023/a:1006162211296
更新日期:1999-01-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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更新日期:2012-08-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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更新日期:2019-10-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 临床试验,杂志文章
doi:10.1023/a:1026533016912
更新日期:2000-09-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-014-1613-0
更新日期:2015-01-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-010-0165-1
更新日期:2010-11-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/BF00177430
更新日期:1988-12-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
doi:10.1007/s11060-015-1843-9
更新日期:2015-09-01 00:00:00
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journal_title:Journal of neuro-oncology
pub_type: 杂志文章
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