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Fmoc固相直接法合成Aβ1-15肽疫苗及其免疫活性
Authors
叶小舟
吴继明
+6 more
姚志彬
杨学森
汪华侨
袁群芳
谢瑶
邹爱国
Publication date
1 January 2006
Publisher
Editorial Office of Journal of Sun Yat-sen University
Abstract
【目的】探讨实验室合成Aβ1-15肽疫苗的方法,并对其进行鉴定。【方法】选取Aβ42主要包含B细胞抗原决定簇的片段Aβ1-15,采用8分支多重抗原肽系统,以Fmoc固相直接法合成MAP Aβ1-15;用MAP Aβ1-15疫苗免疫接种C57BL/6小鼠,ELISA检测血清特异性抗Aβ抗体。【结果】用Fmoc法直接合成方法成功制备MAP Aβ1-15疫苗,质谱检测其主要离子峰的相对分子质量为15458,与理论相对分子质量15451十分接近。但还有其它不同分子质量的离子峰存在。以合成的MAP Aβ1-15免疫C57BL/6小鼠后。可产生高滴度的特异性抗Aβ越抗体,第3次接种后抗体平均滴度为1:467±196,第5次免疫接种后。平均滴度为1:4367±1120。对照组的血清抗体检测基本无明显变化。【结论】Fmoc固相直接法可成功合成出MAP Aβ1-15,合成出的MAP Aβ1-15具有很好免疫活性
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Last time updated on 15/10/2024