申请人:Abbott Laboratories
公开号:US05736624A1
公开(公告)日:1998-04-07
The present invention provides crosslinking, conjugating and reducing agents which are functional with at least one phosphorothioate monoester group (--SPO.sub.3.sup.-2). Crosslinking and conjugation methods as well as solid phase reagents and conjugates which are useful in immunoassays are also provided. Crosslinking and conjugating agents of the invention generally comprise a compound corresponding to the formula (I), shown below, wherein n is at least 1 and Q is a straight or branched monomer, polymer or oligomer having an average molecular weight between about 200 and about 1,000,000. Additionally, when n is 1, Q comprises at least 1 additional reactive functionality. Q--(S--PO.sub.3.sup.-2)n (I) The reducing agents that are provided conform to a compound of the formula (Y), shown below, wherein (A) and (Z) can be independently selected from C.sub.1 -C.sub.5 alkyl and CONH(CH.sub.2).sub.p wherein p is an integer between 1 and 5. ##STR1##
本发明提供了与至少一个磷酸硫酯单酯基团(-SPO.sub.3.sup.-2)具有功能的交联、共轭和还原剂。本发明还提供了交联和共轭方法以及固相试剂和共轭物,这些物品在免疫测定中很有用。本发明的交联和共轭剂通常包括与公式(I)相对应的化合物,其中n至少为1,Q是平均分子量在约200至1,000,000之间的直链或支链单体、聚合物或寡聚物。此外,当n为1时,Q包括至少1个附加的反应性功能。Q--(S--PO.sub.3.sup.-2)n (I) 提供的还原剂符合以下公式(Y)的化合物,其中(A)和(Z)可以独立地选择为C.sub.1-C.sub.5烷基和CONH(CH.sub.2).sub.p,其中p是1至5之间的整数。 ##STR1##