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为获取高效价的红细胞生成素(EPO)单抗,以建立重组人红细胞生成素(hEPO)测定方法。用基因重组的hEPO与小鼠血清白蛋白经N-羟基琥珀酰亚胺基-3(2-吡啶基二硫)丙酸酯(SPDP)交联后,常规免疫BALB/c小鼠,并用细胞融合技术制备分泌hEPOMcAb杂交瘤细胞;用间接ELISA和免疫印迹技术将hEPOMcAb与白色念珠菌胞质抗原的McAb、嗜肺性军团病杆菌McAb、HCV核心肽McAb、人μ链McAb、IFN-γMcAb的间接ELISA同时进行特异性鉴定。经融合后检测,获取一株分泌hEPOMcAb的杂交瘤细胞系。初步鉴定,hEPOMcAb针对hEPO间接ELISA效价为10-7(对照腹水为10-3);免疫印迹结果显示:此McAb与基因重组的hEPO在分子量3000~4000之间有一条显色带,而其它几种McAb均为阴性结果。小分子物质经与同种动物(免疫用动物)血清白蛋白交联后用作免疫抗原,可提高小分子物质的免疫原性,容易获取高效价的单克隆抗体。
To obtain high titer erythropoietin (EPO) monoclonal antibodies, a recombinant human erythropoietin (hEPO) assay was established. BALB / c mice are routinely immunized with genetically modified hEPO and mouse serum albumin crosslinked with N-hydroxysuccinimidyl-3 (2-pyridyldithio) propionate (SPDP) Fusion technology was used to prepare hEPOMcAb hybridoma cells; indirect immunoblotting and immunoblotting were used to combine hEPOMcAb with C. albicans McAb, C. pneumophila McAb, HCV core peptide McAb, human μ chain McAb, IFN-γMcAb Indirect ELISA at the same time for specific identification. After fusion detection, a hybridoma cell line secreting hEPOMcAb was obtained. Preliminary identification, hEPOMcAb indirect ELISA titers for hEPO 10-7 (control ascites 10-3); Western blot results show that: this McAb and gene recombinant hEPO in the molecular weight 3000 ~ 4000 between a band, and other Several McAbs are negative results. Small molecules with the same animal (immunization animals) serum albumin after cross-linked as an immune antigen, can improve the immunogenicity of small molecules, easy access to high titer of monoclonal antibodies.