miR-214 Promotes Aggressive Behavior in Triple-Negative Breast Cancer by Functionally Targeting the 3′-UTR of FRK

Background/Objectives: MicroRNAs (miRNAs) are key regulators of gene expression and have been implicated in multiple aspects of cancer progression. However, the role of miR-214-3p in breast cancer remains controversial. In this study, we investigated the functional role of miR-214-3p and explored its potential regulatory target in breast cancer, particularly in triple-negative breast cancer (TNBC). Methods: miR-214-3p expression was evaluated in breast cancer cell lines. Luciferase reporter assa