One aspect of the present invention relates to methods and compositions for attenuating xenograft rejection by administering, to an animal receiving the xenograft, an amount of a polymer-derivatized xenoantigen (hereinafter “xenopolymer”) effective for inhibiting or lessening the severity of hyperacute rejection response (HAR), or other immunological response to the graft, that is dependent on the presence of the xenoantigen on the grafted tissues or cells. In certain embodiments, the xenopolymer is administered in an amount sufficient to neutralize host antibodies (“xenoreactive antibodies” or “XNA”) immunoreactive with the xenoantigen. The xenopolymer may additionally, or alternatively, be used as a tolerogen (or anergen) for the xenoantigen, e.g., able to suppress, to some degree, the production/secretion of XNAs by the immune system of the host.
本发明的一个方面涉及通过向接受异种移植物的动物施用一定量的聚合物衍生化的异抗原(以下简称 "异聚合物")来减弱异种移植物排斥反应的方法和组合物,该聚合物衍生化的异抗原可有效抑制或减轻超急性排斥反应(HAR)或对移植物的其他免疫反应的严重程度,这种反应依赖于异抗原在移植物组织或细胞上的存在。在某些实施方案中,异种聚合物的用量足以中和与异抗原免疫反应的宿主
抗体("异种反应性
抗体 "或 "XNA")。此外,异多聚物还可用作异抗原的耐受原(或过敏原),例如,能够在一定程度上抑制宿主免疫系统产生/分泌XNA。