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- W2740936512 abstract "Background: Response to chemotherapeutic drugs presents a significant challenge to effective treatment of advanced prostate cancer. Exploration of therapeutic response has focused largely on the tumor cell. However, evidence suggests mechanisms that involve the tumor microenvironment mediate response to therapeutics. Therefore, it is imperative to mimic the in vivo tumor microenvironment, to bridge the gap between in vitro studies and the development of therapeutics. The concept of three-dimensional (3D) cell culture and co-culture of multiple cell types is critical to predict therapeutic efficacy and outcome. Thus, these studies sought to determine the distinct responses to anti-cancer drugs in 3D cell spheroids. Methods: In this study, we utilized metastatic prostate cancer cells (PC3) and fluorescently labeled prostate bone stromal cell line (HS27a) to generate tumor spheroids. Tumor spheroid viability was measured at 72 and 120 h using the CellTiter-Glo 3D assay after treatment with three common anti-cancer drugs, Docetaxel (4ηM), Enzalutamide (30μM), and Bicalutamide (30μM).Treatments were compared with spheroids originated from HS27a and PC3 cells alone and in co-culture. The cell viability percentage was normalized using the untreated cells as 100% cell survival. Results: Spheroid formation increased resistance to Docetaxel, Enzalutamide, and Bicalutamide. However, PC3 spheroid cells was significantly higher compared to HS27a and co-culture spheroids. For all three spheroids, as the size of the spheroids increase, cellular resistance to anti-cancer and hormone drugs increased. Conclusion: The findings in this study demonstrated that the use for 3D-cell cultures influence many aspects of PCa behavior including, proliferation rates, and response to chemotherapeutics. Note: This abstract was not presented at the meeting. Citation Format: Dominique N. Gales, Sonni Miller, Temesgen Samuel, Clatyon Yates. Influence of 3D- cultured prostate cancer and stromal cells on drug response [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 5910. doi:10.1158/1538-7445.AM2017-5910" @default.
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- W2740936512 date "2017-07-01" @default.
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- W2740936512 title "Abstract 5910: Influence of 3D- cultured prostate cancer and stromal cells on drug response" @default.
- W2740936512 doi "https://doi.org/10.1158/1538-7445.am2017-5910" @default.
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