Objective: The aim of the study was to explore the individual detection significances of small breast epithelial mucin (SBEM) and human mammaglobin (hMAM) in peripheral blood (PB) of breast cancer patients. Met...Objective: The aim of the study was to explore the individual detection significances of small breast epithelial mucin (SBEM) and human mammaglobin (hMAM) in peripheral blood (PB) of breast cancer patients. Methods: SBEM and hMAM expressions in PB samples of 109 primary breast cancer patients were detected by flow cytometry (FCM) and RT- PCR. Relationship between the biomarkers' expression and prognostic parameters were analyzed. Results: SBEM and hMAM expressions in PB of breast cancer patients were much higher than those of healthy donors and other cancer patients. SBEM and hMAM expressed in 53.2% (50/94) and 39.4% (37/94) cases at stages I-III and expressed in 73.3% (11/15) and 46.7% (7/15) cases at stage IV respectively. SBEM and hMAM mRNA were only detected in PB samples of breast cancer patients, while no expression of them was found in that of healthy donors and other cancer patients. Conclusion: hMAM mRNA detection maybe helpful to predict hematogenous micrometastasis in ER-positive, well-differentiated breast cancers and SBEM mRNA detection maybe helpful to predict hematogenous micrometastasis in ER-negative, poody-differentiated breast cancers.展开更多
目的克隆乳腺珠蛋白(hum an m amm aglob in,hMAM)编码全长cDNA,原核表达并纯化蛋白产物,为后期研制乳腺癌早期诊断试剂盒奠定基础,从而为早期发现乳腺癌提供科学的监测方法。方法自乳腺癌组织提取总RNA,通过RT-PCR克隆hMAM cDNA,构建pQ...目的克隆乳腺珠蛋白(hum an m amm aglob in,hMAM)编码全长cDNA,原核表达并纯化蛋白产物,为后期研制乳腺癌早期诊断试剂盒奠定基础,从而为早期发现乳腺癌提供科学的监测方法。方法自乳腺癌组织提取总RNA,通过RT-PCR克隆hMAM cDNA,构建pQE40-hMAM表达质粒,在大肠杆菌M15中表达,利用镍-亚硝胺乙酸组氨酸(N i-NTA-H is)亲和层析法对重组蛋白进行纯化。结果表达的融合蛋白以不溶性包涵体形式存在,纯化后得到纯度为97%的目的蛋白。结论成功地纯化出hMAM重组蛋白。展开更多
文摘Objective: The aim of the study was to explore the individual detection significances of small breast epithelial mucin (SBEM) and human mammaglobin (hMAM) in peripheral blood (PB) of breast cancer patients. Methods: SBEM and hMAM expressions in PB samples of 109 primary breast cancer patients were detected by flow cytometry (FCM) and RT- PCR. Relationship between the biomarkers' expression and prognostic parameters were analyzed. Results: SBEM and hMAM expressions in PB of breast cancer patients were much higher than those of healthy donors and other cancer patients. SBEM and hMAM expressed in 53.2% (50/94) and 39.4% (37/94) cases at stages I-III and expressed in 73.3% (11/15) and 46.7% (7/15) cases at stage IV respectively. SBEM and hMAM mRNA were only detected in PB samples of breast cancer patients, while no expression of them was found in that of healthy donors and other cancer patients. Conclusion: hMAM mRNA detection maybe helpful to predict hematogenous micrometastasis in ER-positive, well-differentiated breast cancers and SBEM mRNA detection maybe helpful to predict hematogenous micrometastasis in ER-negative, poody-differentiated breast cancers.
文摘目的克隆乳腺珠蛋白(hum an m amm aglob in,hMAM)编码全长cDNA,原核表达并纯化蛋白产物,为后期研制乳腺癌早期诊断试剂盒奠定基础,从而为早期发现乳腺癌提供科学的监测方法。方法自乳腺癌组织提取总RNA,通过RT-PCR克隆hMAM cDNA,构建pQE40-hMAM表达质粒,在大肠杆菌M15中表达,利用镍-亚硝胺乙酸组氨酸(N i-NTA-H is)亲和层析法对重组蛋白进行纯化。结果表达的融合蛋白以不溶性包涵体形式存在,纯化后得到纯度为97%的目的蛋白。结论成功地纯化出hMAM重组蛋白。