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  • Title: The Effect of a Retinoic Acid Derivative on Cell-Growth Inhibition in a Pulmonary Carcinoma Cell Line.
    Author: Akita T, Horiguchi M, Ozawa C, Terada H, Yamashita C.
    Journal: Biol Pharm Bull; 2016; 39(3):308-12. PubMed ID: 26934924.
    Abstract:
    Pulmonary carcinoma is a major cause of cancer-related death worldwide. Because the prognosis remains poor, the development of novel therapeutic approaches is highly desirable. In this study, we investigated the effect of Tamibarotene (Am80), a retinoic acid derivative, on the growth of human lung adenocarcinoma cell line A549. Our ultimate goal in this study is to provide pulmonary carcinoma therapy with a new approach. First, we treated A549 cells with Am80 to clarify the effect of cell-growth inhibition. Am80 significantly reduced the viability of A549 cells in a dose- and time-dependent manner. The IC50 value, which was determined using CellTiter-Glo Luminescent Cell Viability assay, of Am80 and all-trans retinoic acid (ATRA) against A549 cells at 6 d was 49.1±8.1 µM and 92.3±8.0 µM, respectively. Furthermore, Am80 reduced the anchorage-independent cell-growth ability of A549 cells. However, it was not an apoptosis-mediated mechanism. These results suggest that Am80 can be used as an effective, novel cell-growth inhibitor in lung adenocarcinoma.
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