3-Hydroxy-17β-(p-nitrophenyldithio)-1, 3, 5(10)-estratriene (Reagent A), an affinity labeling reagent for estrogen receptor, was prepared by iodine oxidation of an alkaline mixture of 3-hydroxy-1, 3, 5(10)-estratriene-17β-thiol and p-nitrothiophenol in 50% ethanol, and was isolated in a pure state. The structure was confirmed by the physical as well as spectral properties. The biological activity of the compound was tested by the measurement of the effects of 3H-thymidine incorporation into deoxyribonucleic acid (DNA) and on 14C-uridine incorporation into ribonucleic acid (RNA) in a human breast cancer cell line, MCF-7. There were increases of about 2-fold in thymidine incorporation and of about 1.1- to 2-fold in uridine incorporation in cells in-cubated in 10-7M Reagent A compared with the control.
3-羟基-17β-(对
硝基苯基二
硫)-1, 3, 5(10)-雌
三烯(试剂 A)是一种
雌激素受体亲和标记试剂,由 3-羟基-1, 3, 5(10)-雌
三烯-17β-
硫醇和对硝基
苯硫酚在 50%
乙醇中的碱性混合物经
碘氧化制备而成,并分离得到纯品。通过物理和光谱特性确认了该化合物的结构。该化合物的
生物活性通过测量 3H-
胸苷掺入
脱氧核糖核酸(DNA)和 14C-
尿苷掺入
核糖核酸(RNA)对人类乳腺癌细胞株 MCF-7 的影响进行了测试。与对照组相比,在 10-7M 试剂 A 中培养的细胞
胸苷掺入量增加了约 2 倍,
尿苷掺入量增加了约 1.1 至 2 倍。