Dilxat•Tunyaz, Ding W, Imammamat•Ablajan, Yi C, Su YT, Li HJ. Construction of a recombinant lentiviral vector carrying siRNA targeting SMO gene: Effect on SMO gene expression in pancreatic cancer cells.
Shijie Huaren Xiaohua Zazhi 2016;
24:2974-2981. [DOI:
10.11569/wcjd.v24.i19.2974]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To construct a recombinant lentiviral vector carrying siRNA targeting the SMO gene, and to confirm its inhibitory effect on SMO gene expression in pancreatic cancer cells.
METHODS: Three SMO gene-targeted siRNA fragments were designed and synthesized, and recombinant DNA technology was used to introduce these three fragments into a lentiviral expression vector. After determination of the virus titer, the constructed lentiviral vector was tranfected into human pancreatic cancer cell line SW1990. RT-PCR was used to detect the expression of SMO gene and identify the best interference expression vector. SMO protein expression was detected by Western blot.
RESULTS: Gene sequencing and restriction endonuclease digestion results suggested successful synthesis of SMO-targeted siRNA fragments and correct insertion into the lentiviral vector. The virus titers were 5.31 × 108 TU/mL, 1.49 × 109 TU/mL and 8.50 × 108 TU/mL, respectively. After transfecting SW1990 cells, the SMO gene expression inhibition rates were 86.00%, 74.85% and 19.22%, respectively. The best interference expression vector can achieve an SMO protein inhibition rate > 80% in SW1990 cells.
CONCLUSION: We have successfully constructed an SMO gene-targeted siRNA lentiviral vector, and the vector can effectively inhibit the expression of SMO gene in pancreatic cancer cells, thus providing a good experimental tool for further research.
Collapse