CBL and breast cancer: Additionally, cells transfected with miR-124-3p mimic and the CBL overexpression plasmid showed higher proliferation rates compared to cells transfected with miR-124-3p mimic alone (Fig. 4c), suggesting that miR-124-3p-resistant CBL could sufficiently rescue the suppression of CBL by miR-124-3p and attenuate the anti-proliferative effect of miR-124-3p on breast cancer cells.