Abstract:

Abstract:Objective  To construct recombinant  lentiviral vector pSin-EF2-Puro-DAB2IP transfect prostate carcinoma PC3 cells,and to observe its transfection rate and expression level in PC3 cells.Methods The cDNA sequences specifically targeting the DAB2IP gene were designed and cloned into lentiviral vector PC3-pSin using DNA recombinant technique.Using PC3-pSin-EF2 as control,the 293T cells were transfected by Lipofectamine reagent for lentiviral particles packaged，and viral titer was determined.The DAB2IP mRNA and protein expression levels were examined by RT-PCR and Western blotting methods.Results The PCR and sequencing analysis results confirmed that the DAB2IP gene sequence was consistent with the sequence in GeneBank.The number of DAB2IP gene copy in PC3-pSin-EF2-DAB2IP cells and its control PC3-pSin-EF2 cells were 0.001±0.000 and 0.158±0.013,respectively.Compared with control cells,the overexpression of mRNA in PC3-pSin-EF2-DAB2IP cells upregulated (179.370±15.891) times,the difference was statistically significant (P<0.001). Compared with internal reference and control cells,the expression levels of DAB2IP protein in PC3-pSin-EF2-DAB2IP cells upregulated (2.431±0.892) times and (2.415±0.961) times respectively,the differences were statistically significant (P<0.001).Conclusion The lentiviral vector of the DAB2IP gene pSin-EF2-Puro-DAB2IP is successfully constructed，and its targeted gene is stably expressed in the targeted cells,which provides a basis for the further functional study of DAB2IP.

Key words: DAB2IP, lentiviral vector, prostate neoplasms