目的观察经后增殖方对超排卵小鼠卵巢凋亡相关基因及其蛋白表达的调节作用,探讨中药益气血法对超排卵小鼠卵巢颗粒细胞凋亡及卵泡质量的影响。方法建立超排卵小鼠模型,30只小鼠随机分为空白组、模型组、中药治疗组。采用实时荧光定量PCR...目的观察经后增殖方对超排卵小鼠卵巢凋亡相关基因及其蛋白表达的调节作用,探讨中药益气血法对超排卵小鼠卵巢颗粒细胞凋亡及卵泡质量的影响。方法建立超排卵小鼠模型,30只小鼠随机分为空白组、模型组、中药治疗组。采用实时荧光定量PCR(real-time quantitative PCR,qPCR)和免疫印迹法(Western blot)分别检测Bcl-2、Bax、Caspase3基因和蛋白的表达水平。结果中药治疗组Bax、Cas-pase3 mRNA的表达水平与模型组比较(0.895 vs 1.779,0.674 vs 2.066,均P<0.05),差异均有统计学意义;中药治疗组Bcl-2、Bax、Caspase3 mRNA的表达水平与空白组比较(1.11 vs 1.26,0.89 vs 0.79,0.67 vs 0.96),差异均无统计学意义(P>0.05);中药治疗组Bcl-2、Bax、Caspase3蛋白的表达水平与模型组比较(0.62 vs0.41,0.79 vs 1.06,0.49 vs 0.89),差异均有统计学意义(P<0.05),与空白组比较(0.62 vs 0.64,0.79 vs 0.73,0.49 vs 0.50)差异均无统计学意义(P>0.05)。结论经后增殖方能促进Bcl-2蛋白的表达,抑制Bax、Cas-pase3基因及蛋白的表达,抑制超排卵小鼠卵巢颗粒细胞凋亡至接近自然排卵小鼠的水平,提高超排卵小鼠卵泡质量。展开更多
AIM: To investigate the anti-tumor effect and mechanisms of magnetic nanoparticles targeting hepatocellular carcinoma. METHODS: Human hepatocellular carcinoma was induced in nude mice, and the mice were randomly divid...AIM: To investigate the anti-tumor effect and mechanisms of magnetic nanoparticles targeting hepatocellular carcinoma. METHODS: Human hepatocellular carcinoma was induced in nude mice, and the mice were randomly divided into group A receiving normal saline, group B receiving magnetic nanoparticles containing 5-fluorouracil (5-FU), group C receiving 5-FU, and group D receiving magnetic nanoparticles containing 5-FU with a magnetic field built in tumor tissues. The tumor volume was measured on the day before treatment and 1, 4, 7, 10 and 13 d after treatment. Tumor tissues were isolated for examination of the expression of bcl-2, bax and caspase 3 by immunohistochemical method, reverse transcription polymerase chain reaction and Western blotting. RESULTS: The tumor volume was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P < 0.01). The volume was markedly lower in group D than in group C (P < 0.05). The expression of protein and mRNA of bcl-2 was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P < 0.01), and was markedly lower in group D than in group C (P < 0.01). The expression of bax and caspase 3 in groups C and D was signif icantly increased, compared with that in groups A and B (P < 0.01). CONCLUSION: The targeted magnetic nanoparticles containing 5-FU can improve the chemotherapeutic effect of 5-FU against hepatocellular carcinoma by decreasing the expression of bcl-2 gene, and increasing the expression of bax and caspase 3 genes.展开更多
文摘目的观察经后增殖方对超排卵小鼠卵巢凋亡相关基因及其蛋白表达的调节作用,探讨中药益气血法对超排卵小鼠卵巢颗粒细胞凋亡及卵泡质量的影响。方法建立超排卵小鼠模型,30只小鼠随机分为空白组、模型组、中药治疗组。采用实时荧光定量PCR(real-time quantitative PCR,qPCR)和免疫印迹法(Western blot)分别检测Bcl-2、Bax、Caspase3基因和蛋白的表达水平。结果中药治疗组Bax、Cas-pase3 mRNA的表达水平与模型组比较(0.895 vs 1.779,0.674 vs 2.066,均P<0.05),差异均有统计学意义;中药治疗组Bcl-2、Bax、Caspase3 mRNA的表达水平与空白组比较(1.11 vs 1.26,0.89 vs 0.79,0.67 vs 0.96),差异均无统计学意义(P>0.05);中药治疗组Bcl-2、Bax、Caspase3蛋白的表达水平与模型组比较(0.62 vs0.41,0.79 vs 1.06,0.49 vs 0.89),差异均有统计学意义(P<0.05),与空白组比较(0.62 vs 0.64,0.79 vs 0.73,0.49 vs 0.50)差异均无统计学意义(P>0.05)。结论经后增殖方能促进Bcl-2蛋白的表达,抑制Bax、Cas-pase3基因及蛋白的表达,抑制超排卵小鼠卵巢颗粒细胞凋亡至接近自然排卵小鼠的水平,提高超排卵小鼠卵泡质量。
基金Supported by the Hi-Tech Research and Development Program of China, NO.2002AA214061
文摘AIM: To investigate the anti-tumor effect and mechanisms of magnetic nanoparticles targeting hepatocellular carcinoma. METHODS: Human hepatocellular carcinoma was induced in nude mice, and the mice were randomly divided into group A receiving normal saline, group B receiving magnetic nanoparticles containing 5-fluorouracil (5-FU), group C receiving 5-FU, and group D receiving magnetic nanoparticles containing 5-FU with a magnetic field built in tumor tissues. The tumor volume was measured on the day before treatment and 1, 4, 7, 10 and 13 d after treatment. Tumor tissues were isolated for examination of the expression of bcl-2, bax and caspase 3 by immunohistochemical method, reverse transcription polymerase chain reaction and Western blotting. RESULTS: The tumor volume was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P < 0.01). The volume was markedly lower in group D than in group C (P < 0.05). The expression of protein and mRNA of bcl-2 was markedly lower in groups C and D than in groups A and B (group C or D vs group A or B, P < 0.01), and was markedly lower in group D than in group C (P < 0.01). The expression of bax and caspase 3 in groups C and D was signif icantly increased, compared with that in groups A and B (P < 0.01). CONCLUSION: The targeted magnetic nanoparticles containing 5-FU can improve the chemotherapeutic effect of 5-FU against hepatocellular carcinoma by decreasing the expression of bcl-2 gene, and increasing the expression of bax and caspase 3 genes.