Anti-Tumor Effects of β-Carotine on MCF-7 Human Breast Cancer Cells in Vitro

Objective To study the cytotoxic effects of β carotine on MCF-7 human breast cancer cells in vitro. Methods By using modified MTT colorimetry the cytotoxity of β CA on MCF-7 human breast cancer cells was monitored. Results Allconcentrations of β CA had cytotoxic effects on MCF-7 tumor cells especially the killer rate of groups of 0.5,0.1,0.05mg/ml reached 99%,88.19%, and 56.35% respectively.There were statistically striking differences( P<0.01 ). Conclusion β CA had a direct cytotoxic effects on MC...