N端区是甾体激素受体氨基酸序列差别最大的区域,决定了甾体激素受体抗原的特异性,是制备特异性抗甾体激素受体抗体的首选部位。以前,由于雄激素受体(hAR)纯化的困难,hAR抗体主要是从部分患前列腺癌病人血液中存在的hAR自身抗体纯化获得...N端区是甾体激素受体氨基酸序列差别最大的区域,决定了甾体激素受体抗原的特异性,是制备特异性抗甾体激素受体抗体的首选部位。以前,由于雄激素受体(hAR)纯化的困难,hAR抗体主要是从部分患前列腺癌病人血液中存在的hAR自身抗体纯化获得,利用这种方法制备的hAR抗体不但量少,而且来源也非常有限。 hAR cDNA克隆成功后。展开更多
The aim of this study was to obtain the soluble protein of human pregnane X receptor ligand binding domain(PXRLBD) through the coexpression of PXRLBD and 88 amino acids of steroid receptor coactivator-1(SRC88) and app...The aim of this study was to obtain the soluble protein of human pregnane X receptor ligand binding domain(PXRLBD) through the coexpression of PXRLBD and 88 amino acids of steroid receptor coactivator-1(SRC88) and apply the protein to constructing a new model of screening PXR ligands.Expression plasmid of pETDuet-1-SRC88-PXRLBD was constructed and transformed into Escherichia coli Rosetta(DE3) to coexpress PXRLBD and SRC88 via induction by IPTG at low temperature.Then an equilibrium dialysis model was constructed to study the interaction between PXRLBD and drugs including clotrimazole and dexamethasone,using HPLC as the analysis method.The results showed that the soluble protein of PXRLBD was obtained and the HPLC data indicated that clotrimazole bound to PXRLBD,while dexamethasone did not bind to PXRLBD,which indicated the successful establishment of a new method for studying the interaction between PXR and drugs.The new method may be useful in the screening of PXR ligands in vitro.展开更多
文摘N端区是甾体激素受体氨基酸序列差别最大的区域,决定了甾体激素受体抗原的特异性,是制备特异性抗甾体激素受体抗体的首选部位。以前,由于雄激素受体(hAR)纯化的困难,hAR抗体主要是从部分患前列腺癌病人血液中存在的hAR自身抗体纯化获得,利用这种方法制备的hAR抗体不但量少,而且来源也非常有限。 hAR cDNA克隆成功后。
文摘The aim of this study was to obtain the soluble protein of human pregnane X receptor ligand binding domain(PXRLBD) through the coexpression of PXRLBD and 88 amino acids of steroid receptor coactivator-1(SRC88) and apply the protein to constructing a new model of screening PXR ligands.Expression plasmid of pETDuet-1-SRC88-PXRLBD was constructed and transformed into Escherichia coli Rosetta(DE3) to coexpress PXRLBD and SRC88 via induction by IPTG at low temperature.Then an equilibrium dialysis model was constructed to study the interaction between PXRLBD and drugs including clotrimazole and dexamethasone,using HPLC as the analysis method.The results showed that the soluble protein of PXRLBD was obtained and the HPLC data indicated that clotrimazole bound to PXRLBD,while dexamethasone did not bind to PXRLBD,which indicated the successful establishment of a new method for studying the interaction between PXR and drugs.The new method may be useful in the screening of PXR ligands in vitro.