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Published in: International Journal of Hematology 2/2013

01-02-2013 | Original Article

MicroRNA-21 regulates the sensitivity of diffuse large B-cell lymphoma cells to the CHOP chemotherapy regimen

Authors: Haitao Bai, Ju Wei, Chong Deng, Xiaoyu Yang, Chun Wang, Rang Xu

Published in: International Journal of Hematology | Issue 2/2013

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Abstract

Numerous studies have demonstrated that microRNA-21 (miR-21), as an oncogene, is involved in the occurrence of many types of tumor and the sensitivity of tumor cells to chemotherapeutic drugs. In the present study, we investigated whether miR-21 is involved in regulating the sensitivity of the diffuse large B-cell lymphoma (DLBCL) cell line CRL2631 to the cyclophosphamide, vincristine, Adriamycin, and prednisone (CHOP) chemotherapeutic regimen. Knockdown of miR-21 with antisense oligonucleotides significantly increased the cytotoxic effects of the CHOP regimen in CRL2631 cells. A luciferase reporter assay showed that PTEN is a target gene of miR-21 in CRL2631 cells, and subsequent experiments demonstrated that miR-21 impacts the PI3K/AKT signaling pathway through the regulation of PTEN, thereby affecting cellular sensitivity to the CHOP chemotherapeutic regimen. Furthermore, knockdown of NF-κB decreased miR-21 expression and sensitized CRL2631 cells to CHOP treatment. These results provide evidence that it may be possible to overcome microRNA-based DLBCL drug resistance.
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Metadata
Title
MicroRNA-21 regulates the sensitivity of diffuse large B-cell lymphoma cells to the CHOP chemotherapy regimen
Authors
Haitao Bai
Ju Wei
Chong Deng
Xiaoyu Yang
Chun Wang
Rang Xu
Publication date
01-02-2013
Publisher
Springer Japan
Published in
International Journal of Hematology / Issue 2/2013
Print ISSN: 0925-5710
Electronic ISSN: 1865-3774
DOI
https://doi.org/10.1007/s12185-012-1256-x

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