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- W2327658891 abstract "Embryonic stem (ES) cells, which are characterized by pluripotency and self-renewal, have recently been highlighted in several aspects of drug discovery. In particular, the potential of ES cells to differentiate into specific-cell types make them an extremely useful tool in the evaluation of the biological activity of test compounds. In the present study, we employed mouse embryonic stem (mES) cell-derived embryoid bodies (EBs) to evaluate the antiangiogenic activity of natural compounds. Honokiol, a major neolignan derived from the bark of Magnolia obovata Thunberg (Magnoliaceae), was capable of inhibiting differentiation and vascular vessel formation in mES cell models. EBs were formed using hanging drop cultures. The induction of vascular formation was carried out on gelatin-coated plates in EGM-2 medium. Cell proliferation was measured by MTT assay. RT-PCR, immunocytochemistry, and Western blotting were used to measure differentiation of EBs into endothelial cells and vessel formation. The growth inhibition of honokiol in EB-derived endothelial cells was found that honokiol is more sensitive in the differentiated cells (on day 8) compared to the undifferentiated EB-derived endothelial cells (on day 1) with the IC 50 values of 6.0 and 17.8 μM, respectively. Honokiol also dramatically decreased the expressions of an endothelial biomarker PECAM in the differentiated EB-derived endothelial cells (on day 11). Honokiol also suppressed the activation of p38 MAPK, Akt, ERK1/2 and SAPK/JNK in EB-derived endothelial cells. The antiangiogenic activity of honokiol is associated with the suppression of PECAM and the MAPK pathway in EB-derived endothelial cells. Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 3334. doi:1538-7445.AM2012-3334" @default.
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- W2327658891 date "2012-04-15" @default.
- W2327658891 modified "2023-09-27" @default.
- W2327658891 title "Abstract 3334: Antiangiogenic activity of honokiol through inhibition of vascular vessel formation in the mouse embryonic stem cell-derived endothelial cells" @default.
- W2327658891 doi "https://doi.org/10.1158/1538-7445.am2012-3334" @default.
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