In an effort to develop a non-radioactive alternative to the [3H]tiotidine and [125I]iodoaminopotentidine binding assays for the histamine H2-receptor (H2R), primary amines related to aminopotentidine were prepared and coupled with the succinimidyl esters of the bulky fluorescent dyes S0536 and BODIPY 650/665-X. The primary amines exhibited different degrees of antagonistic potency at the human and
为了开发用于
组胺H2-受体(H2R)的[3H] tiotidine和[125I] iodoaminopotentidine结合测定的非放射性替代品,制备了与
氨基potidine相关的
伯胺,并将其与大体积
荧光素的琥珀
酰亚胺酯偶联
染料S0536和BODIPY 650 / 665-X。
伯胺对人和豚鼠的H2R表现出不同程度的拮抗效力。令人惊讶地,偶联至
花青染料S0536的一种化合物(5)在H 2 R(KB约50 nM;
EC 50约100-150 nM)处充当有效的部分激动剂/拮抗剂。与BODIPY
染料偶联的化合物也显示出较高的H2R亲和力。因此,H2R可能通过与细胞外受体结构域的相互作用来容纳庞大的荧光团。