Abstract

To investigate the effects of platycodin D in combination with different active ingredients of Chinese herbs under different therapeutic principles on proliferation and invasion of 4T1 and MDA-MB-231 breast cancer cell lines. The effective doses of platycodin D, Ophiopogon total saponins, curcumenol and osthole in inhibiting proliferation of breast cancer cell lines 4T1 and MDA-MB-231 were detected by methyl thiazolyl tetrazolium (MTT) assay, respectively. Optimized combinations of platycodin D with Ophiopogon total saponins, curcumenol, or osthole were determined by uniform design method. Effects of the optimized combinations of platycodin D with the three ingredients on proliferation and invasion of 4T1 and MDA-MB-231 cells were verified and evaluated by MTT assay and Transwell chamber test, respectively. Verifying study showed that the inhibitory effects of platycodin D in combination with curcumenol or osthole on proliferation of 4T1 and MDA-MB-231 cells were better than those of platycodin D in combination with Ophiopogon total saponins and each ingredient used alone (P<0.05 or P<0.01). The inhibitory effect of platycodin D in combination with Ophiopogon total saponins or osthole on invasion of 4T1 cells was significantly better than those of platycodin D in combination with curcumenol and each ingredient used alone (P<0.05 or P<0.01). Moreover, the inhibitory effect of platycodin D in combination with curcumenol or osthole on invasion of MDA-MB-231 cells was significantly better than that of platycodin D in combination with Ophiopogon total saponins (P<0.01). The optimized combinations of platycodin D with three different active ingredients of Chinese herbs under different therapeutic principles can significantly inhibit the proliferation and decrease the invasion of 4T1 and MDA-MB-231 cells. Different platycodin D combinations have different potency in suppressing breast cancer cell proliferation and invasion.

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