| 摘要 |
The invention discloses a method for preparing Human Papilloma Virus protein E7 antigen (HPV E7 antigen) comprising the following steps: —providing a purified preparation of HPV protein E7; —phosphorylating the HPV protein E7 in the preparation; —purifying the phosphorylated E7 protein with an anion exchange chromatography, wherein the phosphorylated E7 protein is separated from the non-phosphorylated E7 protein by a step wherein the non-phosphorylated E7 protein stays bound to an anion exchanger during the anion exchange chromatography whereas the phosphorylated E7 protein is obtained in the eluate of the anion exchange chromatography, thereby—obtaining a purified preparation of a phosphorylated HPV protein E7 antigen. The invention further discloses antibodies specific to this antigen, a kit and method for using such antibodies in clinical diagnostics and methods for generation of such antibodies. |
