[Preparation and identification of the polyclonal antibody against ATRX-C2193-2492].

Objective To prepare the polyclonal antibody against human alpha thalassemia/mental retardation syndrome X-linked (ATRX) C-terminal and study the distribution and expression of ATRX protein in human cervical cancer tissues. Methods The antiserum was obtained from the BALB/c mice immunized with (6)His-ATRX-C2193-2492 protein and then purified by the saturated ammonium sulfate precipitation and affinity chromatography. The titer of anti-ATRX polyclonal antibody was determined by ELISA. Its specificity was identified by SDS-PAGE analysis and Western blotting. The expression and location of ATRX in human cervical tissues were analyzed by immunohistochemistry. Results The titer of the polyclonal antibody against (6)His-ATRX-C2193-2492 protein was about 1:12 800. The antibody could recognize (6)His-ATRX-C2193-2492 protein specifically. With the polyclonal antibody, the target protein was found mainly in the nucleus of para-carcinoma tissues, and it was also expressed in the nucleus of cervical cancer tissue cells, but the expression in the latter was obviously lower. Conclusion The polyclonal antibody against (6)His-ATRX-C2193-2492 protein has been produced successfully and used to detect ATRX protein in human cervical cancer tissues.