Dasatinib BMS-35482 potentiates the activity of gemcitabine and docetaxel in uterine leiomyosarcoma cell linesReportar como inadecuado

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Gynecologic Oncology Research and Practice

, 1:2

First Online: 30 September 2014Received: 22 March 2014Accepted: 02 July 2014DOI: 10.1186-2053-6844-1-2

Cite this article as: Lopez-Acevedo, M., Grace, L., Teoh, D. et al. gynaecol oncol res pract 2014 1: 2. doi:10.1186-2053-6844-1-2


BackgroundTo explore the activity of dasatinib alone and in combination with gemcitabine and docetaxel in uterine leiomyosarcoma uLMS cell lines, and determine if dasatinib inhibits the SRC pathway.

MethodsSK-UT-1 and SK-UT-1B uLMS cells were treated with gemcitabine, docetaxel and dasatinib individually and in combination. SRC and paxcillin protein expression were determined pre- and post-dasatinib treatment using Meso Scale Discovery MSD multi-array immunogenicity assay. Dose-response curves were constructed and the coefficient of drug interaction CDI and combination index CI for drug interaction calculated.

ResultsActivated phosphorylated levels of SRC and paxillin were decreased after treatment with dasatinib in both cell lines p < 0.001. The addition of a minimally active concentration of dasatinib IC25 decreased the IC50 of each cytotoxic agent by 2-4 fold. The combination of gemcitabine-docetaxel yielded a synergistic effect in SK-UT-1 CI = 0.59 and an antagonistic effect in SK-UT-1B CI = 1.36. Dasatinib combined with gemcitabine or docetaxel revealed a synergistic anti-tumor effect CDI < 1 in both cell lines. The triple drug combination and sequencing revealed conflicting results with a synergistic effect in SK-UT-1B and antagonistic in SK-UT-1.

ConclusionDasatinib inhibits the SRC pathway and yields a synergistic effect with the two-drug combination with either gemcitabine or docetaxel. The value of adding dasatinib to gemcitabine and docetaxel in a triple drug combination is uncertain, but may be beneficial in select uLMS cell lines. Based on our pre-clinical data and known activity of gemcitabine and docetaxel, further evaluation of dasatinib in combination with these agents for the treatment of uLMS is warranted.

KeywordsDasatinib Leiomyosarcoma SRC pathway Targeted agents Uterine sarcoma Electronic supplementary materialThe online version of this article doi:10.1186-2053-6844-1-2 contains supplementary material, which is available to authorized users.

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Autor: Micael Lopez-Acevedo - Lisa Grace - Deanna Teoh - Regina Whitaker - David J Adams - Jingquan Jia - Andrew B Nixon - Angel

Fuente: https://link.springer.com/

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