Ginsenoside Rb1 inhibits proliferation and promotes apoptosis by regulating HMGB1 in uterine fibroid cells.

To study the effects of ginsenoside Rb1 and the molecular mechanisms on proliferation and apoptosis of uterine fibroid cells, Rb1 + pc DNA3.1, Rb1 + pc DNA3.1-HMGB1, si-NC or si-HMGB1 was transfected into uterine fibroid cells by liposome method; the inhibitory rate and proliferation of human uterine fibroid cells were detected by MTT assay; apoptosis of uterine fibroid cells was detected by flow cytometry assay; HMGB1 protein expression in uterine fibroid cells was detected by Western blot assay. Compared with untreated uterine fibroid cells, the inhibitory and apoptosis rate of uterine fibroid cells treated with Rb1 were significantly up-regulated, while the expression level of HMGB1 was significantly down-regulated (p < .05). HMGB1 knockdown inhibited proliferation and promoted apoptosis of uterine fibroid cells. HMGB1 overexpression reversed the inhibitory effect on proliferation and the promotion effect on apoptosis of Rb1 in uterine fibroid cells. Ginsenoside Rb1 could inhibit uterine fibroid cells proliferation and promote apoptosis. This mechanism might be directly related to the downregulation of HMGB1, providing a basis for the treatment of uterine fibroids with ginsenoside Rb1.