分泌抗p185合成多肽McAb杂交瘤细胞系的建立  

PREPARATION AND IDENTIFICATION OF HYBRIDOMAS SECRETING MOUSE McAbs AGAINST THE PEPTIDE OF ONCOPROTEIN p185

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作  者:祝怀平[1] 秦立增[1] 魏海明[1] 李焱[1] 孙广莲[1] 孟红[1] 郭进林[1] 吴惠联[1] 

机构地区:[1]山东省医学科学院基础医学研究所

出  处:《免疫学杂志》1998年第1期18-21,共4页Immunological Journal

基  金:山东省青年自然基金

摘  要:用多肽固相合成仪合成人癌基因产物p185HER-2(即p185)胞内区的肽段,以之与沙门氏裸菌偶联制成免疫原,经脾内、腹腔、静脉途径免疫Balb/c小鼠,获得具有高抗体活性的脾细胞,后者与SP2/0融合,筛选出5株杂交瘤细胞系并对其分泌的单克隆抗体(McAb)特性进行了初步分析,ELISA检测腹水效价为10-4~10-6,用多肽和沙门氏裸菌分别进行中和试验,多肽抑制率在50%以上,而沙门氏裸菌则不能中和抗体反应。测定其中两株McAb亲和常数(Ka)分别为2.5×107M-1,5.0×108M-1。Synthetic polypeptide sequence corresponding to 15 amino acid residues of predicted antigenicity at the cterminus of a protein deduced from the human CerbB2 nucleotide sequence were sythesizedThe polypeptide combined with salmonella typhimurium was used as antigenIntrasplenic inoculation of the antigen was performed on Balb/c mice,then boosted intraperitoneally and intravenous injection was completed 3 days prior to fusion After fusion,selection and cloning procedures,5 hybridoma cell lines were successfully obtainedThe classes and subclasses,specificity and ascites titer of McAb were identifiedThe affinity constants of two hybridoma cell lines secreting McAb were 25×107M-1 and 50×108M-1 separetlyResults proved that the two McAb recognized the same epitope after epitope specificity analysis

关 键 词:癌基因 蛋白 P185 人工合成多肽 杂交瘤 

分 类 号:R392.11[医药卫生—免疫学] R73-351[医药卫生—基础医学]

 

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