目的:应用凝胶内差异显示电泳和质谱技术研究不同证型乳腺增生病患者血清蛋白质组。方法:收集正常人及不同证型乳腺增生病患者血清,去除高丰度蛋白质后分别用Cy3或Cy5标记,每一对Cy3和Cy5标记样品都与一个Cy2标记的内标等量混合,上样于...目的:应用凝胶内差异显示电泳和质谱技术研究不同证型乳腺增生病患者血清蛋白质组。方法:收集正常人及不同证型乳腺增生病患者血清,去除高丰度蛋白质后分别用Cy3或Cy5标记,每一对Cy3和Cy5标记样品都与一个Cy2标记的内标等量混合,上样于同一胶中进行电泳分离,经不同光激发下扫描得到不同样品的蛋白质组图谱。所获得的图谱经DeCyder6.5软件进行分析,筛选表达量有显著差异的蛋白质进行质谱鉴定。结果:与正常人相比,在乳腺增生患者血清中抗凝血酶lii、富含亮氨酸的α-2糖蛋白、HCCR结合蛋白2、结合珠蛋白2和转甲状腺蛋白及其变异体表达量增加。而SP40,40、Ras association and pleckstrin homology domains 1 iso-form3表达量下降。在不同证型乳腺增生患者血清中,抗凝血酶lii和SP40,40在肝郁气滞型表达量最高,痰瘀互结型次之,而冲任失调型表达量少;HCCRBP2在痰瘀互结型中表达量最高,在肝郁气滞型中表达量最低;转甲状腺素蛋白变异体在肝郁气滞型、冲任失调型和痰瘀互结型中表达依次降低。结论:这些蛋白质可能与乳腺增生病不同证型相关,可以作为乳腺增生病临床中医辨证论治的候选客观指标。展开更多
Momordica antiviral protein 30 kD(MAP30)is a type I ribosome-inactivating protein(RIP)with antibacterial,anti-HIV and antitumor activities but lacks the ability to target tumor cells.To increase its tumor-targeting ab...Momordica antiviral protein 30 kD(MAP30)is a type I ribosome-inactivating protein(RIP)with antibacterial,anti-HIV and antitumor activities but lacks the ability to target tumor cells.To increase its tumor-targeting ability,the arginine-glycine-aspartic(RGD)peptide and the epidermal growth factor receptor interference(EGFRi)peptide were fused with MAP30,which was named ELRL-MAP30.The efficiency of targeted therapy for triple-negative breast cancer(TNBC)MDA-MB-231 cells,which lack the expression of estrogen receptor(ER),Progesterone receptor(PgR)and human epidermal growth factor receptor-2(HER2),is limited.In this study,we focus on exploring the effect and mechanism of ELRL-MAP30 on TNBC MDA-MB-231 cells.First,we discovered that ELRL-MAP30 significantly inhibited the migration and invasion of MDA-MB-231 cells and induced MDA-MB-231 cell apoptosis.Moreover,ELRL-MAP30 treatment resulted in a significant increase in Bax expression and a decrease in Bcl-2 expression.Furthermore,ELRL-MAP30 triggered apoptosis via the Fak/EGFR/Erk and Ilk/Akt signaling pathways.In addition,recombinant ELRL-MAP30 can inhibit chicken embryonic angiogenesis,and also inhibit the tube formation ability of human umbilical vein endothelial cells(HUVECs),indicating its potential therapeutic effects on tumor angiogenesis.Collectively,these results indicate that ELRL-MAP30 has significant tumor-targeting properties in MDA-MB-231 cancer cells and reveals potential therapeutic effects on angiogenesis.These findings indicate the potential role of ELRL-MAP30 in the targeted treatment of the TNBC cell line MDA-MB-231.展开更多
文摘目的:应用凝胶内差异显示电泳和质谱技术研究不同证型乳腺增生病患者血清蛋白质组。方法:收集正常人及不同证型乳腺增生病患者血清,去除高丰度蛋白质后分别用Cy3或Cy5标记,每一对Cy3和Cy5标记样品都与一个Cy2标记的内标等量混合,上样于同一胶中进行电泳分离,经不同光激发下扫描得到不同样品的蛋白质组图谱。所获得的图谱经DeCyder6.5软件进行分析,筛选表达量有显著差异的蛋白质进行质谱鉴定。结果:与正常人相比,在乳腺增生患者血清中抗凝血酶lii、富含亮氨酸的α-2糖蛋白、HCCR结合蛋白2、结合珠蛋白2和转甲状腺蛋白及其变异体表达量增加。而SP40,40、Ras association and pleckstrin homology domains 1 iso-form3表达量下降。在不同证型乳腺增生患者血清中,抗凝血酶lii和SP40,40在肝郁气滞型表达量最高,痰瘀互结型次之,而冲任失调型表达量少;HCCRBP2在痰瘀互结型中表达量最高,在肝郁气滞型中表达量最低;转甲状腺素蛋白变异体在肝郁气滞型、冲任失调型和痰瘀互结型中表达依次降低。结论:这些蛋白质可能与乳腺增生病不同证型相关,可以作为乳腺增生病临床中医辨证论治的候选客观指标。
文摘Momordica antiviral protein 30 kD(MAP30)is a type I ribosome-inactivating protein(RIP)with antibacterial,anti-HIV and antitumor activities but lacks the ability to target tumor cells.To increase its tumor-targeting ability,the arginine-glycine-aspartic(RGD)peptide and the epidermal growth factor receptor interference(EGFRi)peptide were fused with MAP30,which was named ELRL-MAP30.The efficiency of targeted therapy for triple-negative breast cancer(TNBC)MDA-MB-231 cells,which lack the expression of estrogen receptor(ER),Progesterone receptor(PgR)and human epidermal growth factor receptor-2(HER2),is limited.In this study,we focus on exploring the effect and mechanism of ELRL-MAP30 on TNBC MDA-MB-231 cells.First,we discovered that ELRL-MAP30 significantly inhibited the migration and invasion of MDA-MB-231 cells and induced MDA-MB-231 cell apoptosis.Moreover,ELRL-MAP30 treatment resulted in a significant increase in Bax expression and a decrease in Bcl-2 expression.Furthermore,ELRL-MAP30 triggered apoptosis via the Fak/EGFR/Erk and Ilk/Akt signaling pathways.In addition,recombinant ELRL-MAP30 can inhibit chicken embryonic angiogenesis,and also inhibit the tube formation ability of human umbilical vein endothelial cells(HUVECs),indicating its potential therapeutic effects on tumor angiogenesis.Collectively,these results indicate that ELRL-MAP30 has significant tumor-targeting properties in MDA-MB-231 cancer cells and reveals potential therapeutic effects on angiogenesis.These findings indicate the potential role of ELRL-MAP30 in the targeted treatment of the TNBC cell line MDA-MB-231.
