目的研究细胞黏附分子(CAM)上皮性钙黏连蛋白(E-cad)、上皮细胞黏附分子(Ep-CAM)在头颈部腺样囊性癌(ACC)中的表达情况,探讨其在头颈部ACC发生、发展及侵袭转移中的作用。方法应用免疫组织化学EnVision法检测60例头颈部ACC及30例正常腺...目的研究细胞黏附分子(CAM)上皮性钙黏连蛋白(E-cad)、上皮细胞黏附分子(Ep-CAM)在头颈部腺样囊性癌(ACC)中的表达情况,探讨其在头颈部ACC发生、发展及侵袭转移中的作用。方法应用免疫组织化学EnVision法检测60例头颈部ACC及30例正常腺体组织中E-cad、Ep-CAM的表达情况,采用Image-Pro Plus 6.0图像分析系统对免疫组织化学结果进行分析。结果 E-cad在头颈部ACC中的表达低于正常腺体组织(P<0.05),Ep-CAM在头颈部ACC中的表达高于正常腺体组织(P<0.05);E-cad在头颈部ACC组织中的相对低表达分别与ACC的病例分型、临床分期、有无神经症状及有无复发转移有关(P<0.05);Ep-CAM在头颈部ACC组织中的高表达分别与ACC的病例分型、临床分期、有无神经症状及有无复发转移有关(P<0.05)。E-cad与Ep-CAM在头颈部ACC中的表达呈负相关关系(r=-0.890,P=0.000)。结论 E-cad可能具有抑制头颈部ACC发生、发展的作用,Ep-CAM在头颈部ACC中表达越高,提示头颈部ACC恶性程度越高。展开更多
The tumor-associated antigen Ep-CAM (17-1A antigen), defined by the murine monoclonal antibody (mAb) 17-1A, has been identified as a 42-kD glycoprotein. The mAb 17-1A has been used for immunotherapy of colorectal can...The tumor-associated antigen Ep-CAM (17-1A antigen), defined by the murine monoclonal antibody (mAb) 17-1A, has been identified as a 42-kD glycoprotein. The mAb 17-1A has been used for immunotherapy of colorectal cancer. We obtained mAb 19F4 using a synthetic peptide containing antigen determinants of 17-1A antigen. The mAb 19F4 can bind the corresponding dominants of the 17-1A antigen in ELISA. Western-blot analysis demonstrated that mAb 19F4 recognized a 50-kD protein from cell lysates of MCF-7 (breast cancer cell line). Both mAb 19F4 and 17-1A detected a 42-kD protein in the cell lysates of HT-29 (colorectal cancer cell line). The results suggest that new members of the tumor-associated antigen family 17-1A may exist.展开更多
文摘目的研究细胞黏附分子(CAM)上皮性钙黏连蛋白(E-cad)、上皮细胞黏附分子(Ep-CAM)在头颈部腺样囊性癌(ACC)中的表达情况,探讨其在头颈部ACC发生、发展及侵袭转移中的作用。方法应用免疫组织化学EnVision法检测60例头颈部ACC及30例正常腺体组织中E-cad、Ep-CAM的表达情况,采用Image-Pro Plus 6.0图像分析系统对免疫组织化学结果进行分析。结果 E-cad在头颈部ACC中的表达低于正常腺体组织(P<0.05),Ep-CAM在头颈部ACC中的表达高于正常腺体组织(P<0.05);E-cad在头颈部ACC组织中的相对低表达分别与ACC的病例分型、临床分期、有无神经症状及有无复发转移有关(P<0.05);Ep-CAM在头颈部ACC组织中的高表达分别与ACC的病例分型、临床分期、有无神经症状及有无复发转移有关(P<0.05)。E-cad与Ep-CAM在头颈部ACC中的表达呈负相关关系(r=-0.890,P=0.000)。结论 E-cad可能具有抑制头颈部ACC发生、发展的作用,Ep-CAM在头颈部ACC中表达越高,提示头颈部ACC恶性程度越高。
基金Supported by the National Key Basic Research SpecificFunds(No.G19990 75 60 7) and the National ScienceFoundation for Outstanding Young Scientist of China(No.3 0 0 2 5 0 3 8)
文摘The tumor-associated antigen Ep-CAM (17-1A antigen), defined by the murine monoclonal antibody (mAb) 17-1A, has been identified as a 42-kD glycoprotein. The mAb 17-1A has been used for immunotherapy of colorectal cancer. We obtained mAb 19F4 using a synthetic peptide containing antigen determinants of 17-1A antigen. The mAb 19F4 can bind the corresponding dominants of the 17-1A antigen in ELISA. Western-blot analysis demonstrated that mAb 19F4 recognized a 50-kD protein from cell lysates of MCF-7 (breast cancer cell line). Both mAb 19F4 and 17-1A detected a 42-kD protein in the cell lysates of HT-29 (colorectal cancer cell line). The results suggest that new members of the tumor-associated antigen family 17-1A may exist.
