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近十年一些研究显示:特异性抗原、抗体结合形成的免疫复合物IC,经经典途径激活补体,并由人或灵长类动物红血球 (Red blood cells,Rbc;Erythrocyce,E)上存在的C3b受体CR1介导,先与循环中Rbc结合,后由其携带,再经过肝、脾中的网状内皮等系统处理,而得以清除。本文报道,用先生物素化的抗-CRI和抗-人IsM(抗原)的两种单抗,后以链球亲合素(Streptavidin,SA)交联成的异源多聚体(Heteropolymer,HP)分别灌注到5只不同的在循环中预先注射了125I标记的血源性“病原体模式”抗原(人IgM)的栗鼠猴体内,结果发现都促进了抗原(Ag)与Rbc的结合,其被清除的量约达70%~90%。同时,在每个Rbc上CR1数目有一定的降低,它类似于被C3b调理的ⅠC在通常被清除时CR1降低的一般观察结果;吸收Hp-AgⅠC的主要器官是肝和脾。这方面工作的最终目的是将可利用不同HP系统在体内清除Ag,使其成为临床上对疾病的一种潜在性免疫学治疗手段。
In the last decade, some studies have shown that specific antigens, antibodies bind to the immune complex IC formed, activate complement by the classical pathway and are expressed by C3b present on human or primate red blood cells (Rbc; Erythrocyce, E) Receptor CR1 mediated, first with the cycle of Rbc binding, after its carrying, and then through the liver, spleen and other reticuloendothelial system and other treatment, and be cleared. We report here that heterologous multimers (Heteropolymer, HP) crosslinked with streptavidin (SA) using two monoclonal antibodies to the anti-CRI and anti-human IsM (antigens) ) Were individually perfused into 5 different chinchilla monkeys pre-injected with125I-labeled blood-borne “pathogen-mode” antigen (human IgM) in the circulation and were found to promote the binding of antigen (Ag) to Rbc Clear amount of about 70% to 90%. At the same time, there was a certain decrease in the number of CR1 at each Rbc, which is similar to the general observation that CR decreased when CIc-conditioned ICCs were normally cleared; the main organs that absorb Hp-AgIC are liver and spleen. The ultimate goal of this work is to remove Ag from the body using different HP systems, making it a potentially immunotherapeutic approach to disease in the clinic.