黄芩总黄酮对S180、Hep-A-22和Bcap-37肿瘤细胞的抑制作用

目的：研究黄芩总黄酮对S₁₈₀、Hep-A-22和Bcap-37肿瘤细胞增殖及S₁₈₀和Hep-A-22荷瘤小鼠肿瘤生长的抑制作用。 方法：将S₁₈₀、Hep-A-22和Bcap-37肿瘤细胞分别加入终浓度为12.5、25.0、50.0及100.0 mg?L^-1的黄芩总黄酮，采用四氮唑盐衍生物(XTT)、MTT法测定细胞增殖抑制率；将S₁₈₀和Hep-A-22荷瘤小鼠分为空白对照组、环磷酰胺（CTX）阳性药对照组(30 mg?kg^-1，隔日给药)、黄芩总黄酮大（200 mg?kg^-1?d ^-1）、中（100 mg?kg^-1?d^-1）和小剂量组（50 mg?kg^-1?d^-1），连续给药15 d后剥离肿瘤，称取瘤重，计算其 肿瘤生长的抑制率。观察各给药组Hep-A-22荷瘤小鼠连续用药10 d后生命延长率。结果：黄芩总黄酮对S₁₈₀、Hep-A-22和Bcap-37肿瘤细胞的抑制率随给药浓度的增加而显著升高, 其IC₅₀值分别为16.04、17.74和9.05 mg?L^-1；与空白对照组比较，黄芩总黄酮大、中、小剂量组S₁₈₀、Hep-A-22荷瘤小鼠的肿瘤重量均明显低于空白对照组（P<0.05或P<0.01），随给药剂量的增加，其肿瘤抑制率增加（P<0.05或P<0.01）。黄芩总黄酮大、中、小剂量组的Hep-A-22荷瘤小鼠的平均生存天数均显著高于空白对照组（P<0.01），其生命延长率较空白对照组显著增加（P<0.01）。结论：黄芩总黄酮对S₁₈₀、Hep-A-22和Bcap-37肿瘤细胞的增殖及S₁₈₀和Hep-A-22荷瘤小鼠肿瘤生长均具有抑制作用。

Inhibitory effects of total flavonoids of scutellaria baicalensis georgi on S_(180),Hep-A-22 and Bcap-37 tumor cells

Objective To study the inhibitory effects of total flavonoids of scutellaria baicalensis georgi(TFSB) on S180,Hep-A-22 and Bcap-37 tumor cell proliferation in vitro and on S180,Hep-A-22 in mice bearing tumor in vivo.Methods In vitro,S180,Hep-A-22 and Bcap-37 cells were divided into control group and TFSB groups(12.5,25.0,50.0,100.0 mg·L-1).The inhibitory effects of TFSB on proliferation of S180 and Hep-A-22 were measured by XTT colorimetric assay,and Bcap-37 cells were measured by MTT colorimetric assay.In vivo,the mice bearing tumor were divided into control group,CTX group(30 mg·kg-1),high,middle,low doses TFSB groups(200,100,50 mg·kg-1).After the mice bearing S180 and Hep-A-22 tumor cells were treated with TFSB for 15 d,the tumor weights were measured,the inhibitory rates of S180 and Hep-A-22 were calculated and survival of Hep-A22 was measured after administration of TFSB for 10 d.Results TFSB inhibited the proliferation of S180,Hep-A-22 and Bcap-37 cells,IC50 values were 16.04,17.74 and 9.05 mg·L-1,respectively.The tumor weight of mice bearing S180 and Hep-A-22 cells in TFSB groups(200,100,50mg·kg-1) were lowered than that in control(P<0.01 or P<0.05).The tumor inhibitory rates were increased in dose-dependent manner.The survival of mice bearing Hep-A-22 in TFSB groups were higher than that in control(P<0.01).Conclusion TFSB may possess significantly inhibitory effect on proliferation of S180,Hep-A-22 and Bcap-37 cells in vitro and the growth of tumor in mice bearing S180 and Hep-A-22 in vivo.