目的:建立检测逆转录酶活性的酶联免疫吸附实验方法,用于筛选人类免疫缺陷病毒(HIV-1)逆转录酶抑制剂。方法:利用DNA的固相固定技术将引物固定于96孔微量滴定板上,以poly(rA)·Oligo(dT)15为模板,在逆转录酶的作用下,将生物素标记的dUTP掺入,用碱性磷酯酶反应系统检测酶活性。结果:建立了检测逆转录酶活性的酶联免疫(ELISA)法,并用ELISA法验证了已知阳性药物对逆转录酶的抑制作用,对ELISA法在动力学研究的应用做了初步探讨,评估ELISA法的重复性、稳定性、特异性和敏感性。结论:ELISA法检测HIV-1逆转录酶活性具有简单、快速、特异性强、重复性好、污染小等特点,适用于以HIV-1逆转录酶为靶点的抑制剂的筛选及相关机制的研究。
Objective:to establish an ELISA method for detecting the activity of reverse transcriptase.Methods:Oligo(dT)15 was immobilized via its 5'-terminal phosphate to Covalink-NH microtiter plates,The biotin-dUTP was incorporated by reverse transcriptase.The products were detected and quantified using a colorimetric streptavidin-alkaline phosphatase reporter system.Results:We established an ELISA RT assay method and tested the inhibition activity of PFA and NVP respectively.Using this method we also studied the kinetic mechanism of AMV-RT and HIV-1 RT.At the same time,we evaluated the stability,repeatability,specificity and sensitivity of this ELISA method.Conclusion:This ELISA method has particular advantags,such as simplicity,rapidity,specificity and little pollution,and is suitable for screening and studying of specific inhibitors of HIV-1 reverse transcriptase and other RTs.