[Establishment of primary Her-2 over- expression human breast cancer cell model]

Through isolation and purification pri-mary HER2 overexpression human breast cancer cells from malignant pleural effusion and identification the HER2 expression level of the cells to establish the primary HER2 overexpression human breast cancer cell model. METH-ODS: Malignant pleural effusion of HER2 overexpression breast cancer patient was collected. The primary cells were extracted from malignant pleural effusion by Lymphocyte separation medium and the method of density gradient centrifugation. When the primary cells were cultured and spreaded to the 5th generation, the HER2 expression level of the primary cells were detected by the methods of Q-PCR,Western blot and flow cytometry (FCM). Ability of tumor-bearing was detected by tumor-bearing nude mice assay.

The primary HER2 overexpression human breast cancer cells were extracted and identified by the methods of Q-PCR, Western blot and tumor-bearing nude mice assay,even though the FCM showed Negative results.

The primary HER2 overexpression human breast cancer cell model was established; Identification of primary cells need to be confirmed by different methods.