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Erschienen in: Medical Oncology 3/2015

01.03.2015 | Original Paper

Glioma cells escaped from cytotoxicity of temozolomide and vincristine by communicating with human astrocytes

verfasst von: Weiliang Chen, Donghai Wang, Xinwen Du, Ying He, Songyu Chen, Qianqian Shao, Chao Ma, Bin Huang, Anjing Chen, Peng Zhao, Xun Qu, Xingang Li

Erschienen in: Medical Oncology | Ausgabe 3/2015

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Abstract

Resistance to chemotherapeutic drugs remains a great obstacle to successful treatment of gliomas. Understanding the mechanism of glioma chemoresistance is conducive to develop effective strategies to overcome resistance. Astrocytes are the major stromal cells in the brain and have been demonstrated to play a key role in the malignant phenotype of gliomas. However, little is known regarding its role in glioma chemoresistance. In our study, we established a co-culture system of human astrocytes and glioma in vitro to simulate tumor microenvironment. Our results showed that astrocytes significantly reduced glioma cell apoptosis induced by the chemotherapeutic drugs temozolomide and vincristine. This protective effect was dependent on direct contact between astrocytes and glioma cells through Cx43-GJC. Moreover, in human glioma specimens, we found astrocytes infiltrating around the tumor, with a reactive appearance, suggesting that these astrocytes would play the same chemoprotective effect on gliomas in vivo. Our results expand the understanding of the interaction between astrocytes and glioma cells and provide a possible explanation for unsatisfactory clinical outcomes of chemotherapeutic drugs. Cx43-GJC between astrocytes and glioma cells may be a potential target for overcoming chemoresistance in gliomas clinically.
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Metadaten
Titel
Glioma cells escaped from cytotoxicity of temozolomide and vincristine by communicating with human astrocytes
verfasst von
Weiliang Chen
Donghai Wang
Xinwen Du
Ying He
Songyu Chen
Qianqian Shao
Chao Ma
Bin Huang
Anjing Chen
Peng Zhao
Xun Qu
Xingang Li
Publikationsdatum
01.03.2015
Verlag
Springer US
Erschienen in
Medical Oncology / Ausgabe 3/2015
Print ISSN: 1357-0560
Elektronische ISSN: 1559-131X
DOI
https://doi.org/10.1007/s12032-015-0487-0

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