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本研究用陕西81-14A株HFRSV,免疫BALB/c小鼠,取该鼠牌细胞与SP2/0骨髓瘤细胞融合,获得分泌抗HFRSV抗体的C_4株杂交瘤细胞系。C_4株McAb与我国各地的28株及朝鲜的76~118株,Seoul株HFRSV均产生免疫反应,表明是HFRSV组特异性抗体,并适用于荧光素及辣根过氧化物酶标记、经初步应用效果满意。 相似文献
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将HFRS病人Ab_1免疫BALB/c小鼠,取脾细胞与Sp2/0-Ag14小鼠骨髓瘤细胞融合,制备了HFRSV的McAb_2。初期融合试验中用ELISA间接法检测阳性克隆,阳性率为3.2~7.4%。其中5株杂交瘤经克隆化后阳性率达到100%。特异性鉴定表明,5种McAb_2只与HFRS病人Ab_1结合,不与正常人Ig结合。McAb_2所识别的独特型是人Ab_1与部分小鼠抗HFRSV的McAb上的交叉反应独特型。本文还应用McAb_2作为探针,对抗HFRSV的单克隆抗体的独特型进行了分析。 相似文献
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用McAb亲和层析法粗提HFRS病毒81-14A株感染BHK细胞培养上清液,效果较满意。病毒抗原获得率为48.07%。经McAb亲和层析法洗脱,病毒抗原,蛋白峰基本一致。特异性试验证明洗脱物为HFRS病毒抗原。SDS-RAGE经氨银染色主要有4条区带。 相似文献
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本文用HFRS病毒McAbs免疫家兔,制备了抗Id抗体(Ab_2),用小鼠γ球蛋白-Sepharose4B免疫亲和层析柱纯化了Ab_2,并以ELISA试验对其特异性作了鉴定。结果表明,所制备的Ab_2具有良好的Id特异性,并能与所用的小鼠抗HFRS病毒单抗、兔抗HFRS病毒抗体和HFRS病人血清结合。同时提示,这种Ab_2可能具有替代抗原的免疫潜能。 相似文献
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Indirect fluorescent antibody test (IFAT) was employed to detectviral antigens in the peripheral blood lymphocytes from 77 patients withclinically diagnosed epidemic hemorrhagic fever (EHF). The positive ratewas 50.7%, and it was 64.3% (27/42) for early cases (2nd to 5th day ofdisease). It was found that the earlier and the more severe the cases were,the higher the positive rate was. Three McAbs, 4B9, 4E7 and 3H4 havebeen introduced to IFAT. Five reaction patterns of the three McAbs withviral antigen positive cases were observed. The McAbs showed theirdifferences in respect of positive rate. Combination of McAbs could raisethe positive rate. In the cases of early phase with positive EHFV antigensin the leucocytes, the positive rate of specific IgM in acute phase sera was96.3%. The positive rate and accuracy of EHF early diagnosis could beraised by combined application of detection of the viral antigens andspecific serum IgM in the acute phase. 相似文献
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Thirty-five strains of HFRS virus isolated from the patients andseveral host animals in various areas in China were analyzed by IFATwith 10 McAbs specific for HFRS virus.It has been proved that thereare antigenic differences among the strains.The HFRS virus strainsrevealed nine different reactions for the McAb,showing that there are atleast nine different antigenic determinants,including group-,type-andstrain-specific.The analytical result shows that antigenic differencesamong the HFRS virus strains are mainly related to difference in the hostanimals. 相似文献
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作者概要地报道我室近年来对肾综合征出血热病毒单克隆抗体(McAb)的研究与应用,包括:①肾综合征出血热病毒及其血凝素抗原McAb杂交瘤细胞系的建之与鉴定,②选择其中高效优质的McAb进行病毒的抗原性分析;③以McAb亲和层析纯化病毒结构蛋白及其分析鉴定,④纯化HFRS-McAb及其应用;⑤以Mcab-IFAT检验HFRS患者外周血白细胞中的病毒抗原;⑥建立了McAb-ELISA间接夹心法检测HFRS病毒抗原、检测不同疫区人和动物血清中特异性抗体(IgM和IgG)、患者血清中血凝抑制抗体等。并已应用于研究HFRS病毒结构及其特征、纯化病毒抗原组份及保护性抗原,对本病的早期快速检验诊断、流行病学调查、研究疫苗及免疫治疗等都有重要意义。 相似文献
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