申请人:Cerus Corporation
公开号:US20020028432A1
公开(公告)日:2002-03-07
Methods are provided for quenching undesired side reactions of pathogen inactivating compounds in biological materials. In a particular embodiment, methods are provided for quenching undesired side reactions of a pathogen inactivating compound that includes a functional group which is, or which is capable of forming, an electrophilic group. In this embodiment, the material is treated with the pathogen inactivating compound and a quencher, wherein the quencher comprises a nucleophilic functional group that is capable of covalently reacting with the electrophilic group. The electrophilic group on the pathogen inactivating compound is preferably a non-radical cationic group. In one embodiment, the pathogen inactivating compound includes a nucleic acid binding ligand and a mustard group, wherein the mustard group is capable of reacting in situ to form the electrophilic group. Preferred quenchers are thiols, such as glutathione. Biological materials which may be treated include whole blood, red blood cells, blood plasma, and platelets. The methods permit inhibition of the modification of red blood cells in red blood cell containing materials during pathogen inactivation.
本发明提供了淬灭生物材料中病原体灭活化合物不希望发生的副反应的方法。在一个特定的实施方案中,提供了淬灭病原体灭活化合物不希望发生的副反应的方法,该化合物包括一个亲电基团或能够形成亲电基团的官能团。在本实施方案中,用病原体灭活化合物和淬灭剂处理材料,其中淬灭剂包括能与亲电基团发生共价反应的亲核官能团。病原体灭活化合物上的亲电基团最好是非放射性阳离子基团。在一个实施方案中,病原体灭活化合物包括核酸结合配体和芥子气基团,其中芥子气基团能够原位反应形成亲电基团。首选淬灭剂是硫醇,如谷胱甘肽。可处理的生物材料包括全血、红细胞、血浆和血小板。这些方法可以在病原体灭活过程中抑制含红细胞材料中红细胞的修饰。