Anticancer activity in vitro ofLitsea cubeba fruit extracts was investigated, focusing on the fruit residue from essential oil extraction. The methanol extract was fractionated by an Amberlite XAD-7 column. Cell viabi...Anticancer activity in vitro ofLitsea cubeba fruit extracts was investigated, focusing on the fruit residue from essential oil extraction. The methanol extract was fractionated by an Amberlite XAD-7 column. Cell viability, cell proliferation and cell death were determined using conversion of WST-8, BrdU incorporation and measurement of released LDH, respectively. Activation of caspase-3/-7 was detected using Z-DEVD-R substrate and morphological characteristics of apoptotic cells were revealed by DAPI staining. It was found that 80-100% methanol fractions （RME-4B, -5A, -5B and -5C） were effective against HeLa cell viability and also promoted cell death. RME-SA and -5B were highly effective in suppressing DNA replication （IC50 4.89 and 3.26 g/mL at 48 h） and also in activation of caspase-3/-7 （9 and 17 times of untreated population at 12 h）. The presence of apoptotic bodies was clearly observed. The results of this study suggested that L. cubeba fruit residue has remarkable apoptosis induction potential for further use in cancer drug research and for waste management in the essential oil industry.展开更多
文摘Anticancer activity in vitro ofLitsea cubeba fruit extracts was investigated, focusing on the fruit residue from essential oil extraction. The methanol extract was fractionated by an Amberlite XAD-7 column. Cell viability, cell proliferation and cell death were determined using conversion of WST-8, BrdU incorporation and measurement of released LDH, respectively. Activation of caspase-3/-7 was detected using Z-DEVD-R substrate and morphological characteristics of apoptotic cells were revealed by DAPI staining. It was found that 80-100% methanol fractions （RME-4B, -5A, -5B and -5C） were effective against HeLa cell viability and also promoted cell death. RME-SA and -5B were highly effective in suppressing DNA replication （IC50 4.89 and 3.26 g/mL at 48 h） and also in activation of caspase-3/-7 （9 and 17 times of untreated population at 12 h）. The presence of apoptotic bodies was clearly observed. The results of this study suggested that L. cubeba fruit residue has remarkable apoptosis induction potential for further use in cancer drug research and for waste management in the essential oil industry.
