黄芩素抑制人乳腺癌细胞侵袭和迁移的实验研究

目的探讨黄芩素(baicalein)对人乳腺癌MDA-MB-231细胞侵袭和迁移的作用及其机制。方法 MTT法检测Baicalein对细胞活力的影响;Transwell小室测定其侵袭力和迁移力;细胞划痕实验测定细胞运动能力;Western blot检测细胞MMP2、MMP9和uPA的表达。结果与对照组相比,50、100μmol·L-1的baicalein明显抑制了MDA-MB-231细胞的侵袭(P<0.01)和迁移(P<0.01)。其中,baicalein对细胞侵袭抑制率分别为15%和44%,对细胞迁移的抑制率分别为50%和77%。50μmol·L-1的baicalein抑制了MMP2的表达水平,100μmol·L-1的baicalein分别抑制了MMP9和uPA的表达水平。结论 baicalein能够抑制MDA-MB-231细胞侵袭和迁移,其机制可能与直接抑制细胞侵袭和迁移能力,抑制MMP2、MMP9和uPA的表达有关。

Experimental study on Baicalein inhibiting the invasion and migration of human breast cancer cells

Aim To explore the effect of Baicalein and its mechanism on the invasion and migration of human breast cancer MDA-MB-231 cells.Methods The effect of Baicalein on cell viability was tested by MTT.The cell invasion and migration were determined by transwell chamber model.The cell movement capability was determined by cell scratch assay.The expressions of matrix metalloproteinase(MMP)2 and 9,urokinase-type plasminogen activator(uPA)were detected by Western blot.Results 50,100 μmol·L-1 of Baicalein inhibited significantly cell invasion(P<0.01) and migration(P<0.01) compared with control groups.The inhibitory rates were 50% and 77% in cell migration and 15% and 44% in cell invasion,respectively.50 μmol·L-1 of Baicalein significantly inhibited the level of MMP 2 expression.100 μmol·L-1 of Baica-lein significantly inhibited the level of MMP 9 and uPA expressions.Conclusions Baicalein inhibits invasion and migration of MDA-MB-231 cells.The mechanisms may be involved in the direct inhibition of cell invasion and migration abilities,and the inhibition of MMP 2,MMP 9,and uPA expressions.