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  • Title: [Effect of phenylhexyl isothiocyanate on inducing apoptosis of multiple myeloma cells in vitro].
    Author: Lu QY, Wang Z, Liu DL.
    Journal: Zhongguo Shi Yan Xue Ye Xue Za Zhi; 2008 Feb; 16(1):89-92. PubMed ID: 18315907.
    Abstract:
    In order to investigate the effects of phenylhexyl isothiocyanate (PHI) on proliferation and apoptosis of multiple myeloma cells RPMI8226 in vitro, the RMPI8226 cells were co-cultured with PHI at various concentrations; the apoptosis of PHI-treated cells was assayed by TUNEL; the cell cycle changes of PHI-treated cells were analyzed by FCM; the mitochondrial potential changes of PHI-treated cells were detected by using a potential sensitive dye JC-1 as probe; the VEGF levels secreted from PHI-treated cells were measured by quantitative sandwich ELISA. The results showed that PHI significantly inhibited RPMI8226 cell proliferation, induced their apoptosis at low concentration (0.5 micromol/L), the inhibitory effect was related to PHI concentration. PHI-treated cells were arrested in G(0)/G(1) phase. The RPMI8226 cells showed shift from red fluorescence to green fluorescence in some concentration-dependent manner, indicating increase of mitochondrial depolarization and potential loss by 3-4-fold as compared with control, after treated RMPI8226 cells with 10 micromol/L of PHI for 48 hours, the VEGF level secreted from RMPI8226 cells significantly decreased, it was 35% of control. It is concluded that the PHI can inhibit cell proliferation, induce cell apoptosis of RMPI8226, the cell apoptosis is associated with mitochondrial depolarization and potential loss, the inhibiting VEGF secretion from RMPI8226 cells by PHI may be one of the reasons causing apoptosis. PHI may be a potential therapeutic drug for multiple myeloma.
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