STAT3 Activation Way Blocking Effects on Colorectal Cancer cells HT29 Growth / 中国现代普通外科进展

ABSTRACT

Objective:Explore decoy oligonucleotide (ODN) technology targeted blocking STAT3 activation way effects on colorectal cancer HT29 cell growth,to provide experimemt basis for gene therapy of colorectal cancer.Methods:Using decoy ODN in vitro transfect colorectal cancer HT29 cell line,to targeted blocking STAT3 activation way.Fluorescence microscope and flow cytometry detect transfection conditions and efficiency,and MTT method detect the cell growth inhibition,Realtime RT-PCR and Western blotting test STAT3 in cells,the Bcl-xl and Caspase3 mRNA and protein expression.Results:STAT3 decoy ODN can efficient transfection into colorectal cancer cells,and is due to the nucleus.HT29 cell in the STAT3 decoy ODN,growth inhibition rate increased significantly,and mRNA and quantity of protein expression of STAT3 significantly reduce (P＜0.05),while caspase3 increase significantly (P＜0.05).Conclusion:Named Decoy ODN targeted after blocking STAT3 activation way,which can effectively cut colorectal cancer cells HT29 STAT3 gene expression,and inhibit the growth of the cells.The mechanism may be related to lower the expression of STAT3 and the Bcl-xl and Caspase3.