Abstract
This study assessed the mechanism of miR-21 with lipid nanoparticles carrier in restraining biological behavior of breast carcinoma cells through targeting of Wnt/β-catenin channel. Breast carcinoma cells were collected and divided into blank set, miR-21 set, agonist set and inhibitor set. We observed expressions of miR-21 cyclinD1, Bcl-2, Bax and Caspases-3. Also, quantity of cells through basement membrane, expression of factors related with Wnt/β-catenin signal channel, and targeting correlation between miR-21 and Wnt were also observed. The expression of miR-21 in MCF-7 cells was lowest, while the ratio of active cells in blank set was highest. The expressions of Bax and Caspase-3 and quantity of cells through basement membrane in the blank and agonist sets were highest. The expressions of cyclinD1 and Bcl-2 were lowest. The apoptotic rate in the blank and agonist sets was lowest and invasive rate was highest. The expressions of Wnt and β-catenin in the blank and agonist sets were highest. There was direct targeting correlation between miR-21 and Wnt while Wnt/β-catenin activity was restrained by miR-21. The expressions of Bax and Caspase-3 also increased and apoptosis was induced and invasion and proliferation of breast carcinoma cells were restrained.
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