Synthesis, evaluation and 3D QSAR analysis of novel estradiol–RGD octapeptide conjugates with oral anti-osteoporosis activity
作者:Jiangyuan Liu、Xiaoyi Zhang、Ming Zhao、Shiqi Peng
DOI:10.1016/j.ejmech.2008.09.036
日期:2009.4
To enhance the potency, reduce the side effects and improve oral property of estradiol in estrogen replacement therapy (ERT), 6 novel estradiol–RGD octapeptide conjugates have been prepared. In an ovariectomized mouse osteoporotic model, at an oral dosage of 110.3 nmol/kg per day, their anti-osteoporosis activity was significantly higher than that of estradiol and estradiol–RGD tetrapeptide conjugates
为了增强雌激素替代疗法(ERT)的效力,降低副作用并改善雌二醇的口服特性,已制备了6种新型雌二醇-RGD八肽偶联物。在卵巢切除的小鼠骨质疏松模型中,每天口服剂量为110.3 nmol / kg,它们的抗骨质疏松活性显着高于雌二醇和雌二醇-RGD四肽偶联物,它们的血栓形成和子宫内膜增生的风险明显低于雌二醇和雌二醇-RGD四肽共轭物的结合力。使用Cerius2的QSAR模块,对接受小鼠的雌二醇-RGD肽结合物的股骨重量和股骨灰分重量进行了3D QSAR。的[R 2 高达0.995和0.988的3D QSAR方程式表明,它们能够预测结合物的相对精确的抗骨质疏松活性。