摘要
目的 研制抗c erbB 2胞内区多肽单克隆抗体 ,用于乳腺癌等c erbB 2过量表达的诊断及指导治疗。方法 合成p185蛋白胞内区多肽作为抗原 ,免疫BALB/C小鼠建立了一组分泌抗该多肽的特异性高亲和力单克隆抗体杂交瘤细胞系 ,并对该单抗的生化特性及其免疫学反应性进行了研究和测定 ,并与美国食品药品管理局 (FDA)批准的抗c erbB 2多克隆抗体进行了比较。结果 共获得3株稳定分泌抗p185胞内区单抗的杂交瘤细胞株。其中 0 35 E6 1株单抗经对 39例 (T1 2 N0 M0 )乳腺癌患者组织病理切片进行免疫组织化学染色 ,c erbB 2过量表达阳性率为 2 6 % ,而乳腺纤维腺瘤组织切片没有非特异染色 ;流产正常胎儿器官组织切片除甲状腺、肾上腺和肾小管上皮表达外 ,其余均不表达。与FDA批准的DAKO公司多抗的阳性染色符合率为 74%。结论 0 35 E6 1单抗可特异识别乳腺癌细胞内p185胞内区抗原。对判断乳腺癌预后及指导治疗可能具有应用价值。
Objective To develop and identify the monoclonal antibodies (mAb) against c-erbB-2 p185 intracellular domain for detection of c-erbB-2 protein overexpression in breast tumor cells. Methods BALB/C mice were immunized with a synthesized p185 peptide of intracellular domain. The biological characteristics and immunoactivities were identified by different techniques. Results Three hybridoma cell strains secreting mAbs to c-erbB-2 protein were established and one of the mAbs, No.035-E61 was tested for c-erbB-2 protein immunostaining on 39 breast carcinoma sections, 30 breast fibroadenoma sections and 16 sections from various normal organs. The results showed that the positive detection frequency of protein expression was 26% (10/39) in breast cancer, none (0/30) in fibroadenoma and 3 sections from normal organs were positively stained. The consistency between the 035-E61 and the DAKO reagent approved by FDA was 74%. Conclusions No.035-E61 mAb can specifically recognize the p185 intracellular domain and may be useful in guiding clinical Herceptin treatment.
出处
《中华病理学杂志》
CAS
CSCD
北大核心
2002年第2期148-150,共3页
Chinese Journal of Pathology
