A miRNA screen reveals a transcriptional network controlling the initiation of mammary organoids. (PubMed, FEBS J)
Extending these findings to cancer, we demonstrate that enforced expression of miR-106a-3p significantly increases tumoroid formation, suggesting that the tumor microenvironment, as modeled by 3D culture, promotes miR-106a-3p expression and functional relevance in tumorigenic processes. Collectively, these data indicate that miR-106a-3p drives a transient expansion of progenitor-like states and orchestrates transcriptional reprogramming during organoid initiation, with broader implications for breast tissue homeostasis and pathophysiological remodeling in cancer.