【摘要】 目的为了进一步分析活化淋巴细胞可浸出核抗原(ENA)的免疫原性。方法按照Sharp法提取了正常淋巴细胞和活化淋巴细胞的ENA,分别免疫同系BALB/C小鼠。用ELISA法检测免疫血清中抗dsDNA抗体的动态变化,并进行了免疫血清的ENA多肽谱分析,用间接免疫荧光法观察抗核抗体的荧光核型,并用直接免疫荧光法观察了免疫小鼠的肾脏病理。结果活性ENA免疫的小鼠血清中可检测出抗核抗体,包括抗ENA抗体和抗dsDNA抗体,抗核抗体核型有颗粒型、均质型、周边型及核仁型;免疫小鼠的肾脏切片可观察到肾小球有IgG类免疫复合物沉积。而正常ENA免疫的小鼠血清中始终检测不出抗核抗体、抗ENA抗体、抗dsDNA抗体,免疫小鼠的肾脏切片亦未见IgG类免疫复合物沉积。结论活化淋巴细胞ENA亦具有免疫原性,可驱动抗核抗体生成,引起SLE样综合征。更多还原

【Abstract】 Objective To study the immunogenicity of extractable nuclear antigens(ENA)in activateed lymphocytes.Methods The ENA of the normal and activated lymphocytes was extracted according to Sharp’s method,then syngeneic BALB/C mice were immunized.The dynamic fluctuation of serum IgG anti-dsDNA antibody level in mice was analyzed by ELISA,so did the ENA polypeptide spectrum.The immunofluorescent staining pattern of ANA and renal immunopathologic changes of the mice were investigated.Results ANA could be detected in the sera of the immunized mice by the ENA extracted from the activated lymphocytes,including anti-dsDNA and anti-ENA.The immunofluorescent staining patterns for ANA manifested as homogeneous pattern,peripheral pattern,speckled pattern and nucleolar pattern.Moreover,marked immune complex deposits in glomerulus could be observed in ANA positive mice.The results in those mice immunized by the normal-lymphocyte-ENA were negative.Conclusion The ENA extracted from activated lymphocytes is immunogenic,can drive the production of ANA and cause SLE-like syndrome.更多还原