HK2 and polycystic ovary syndrome: We found that the upregulated miR-143-3p expression in exosomes from the PCOS group was a potential regulatory factor of HK2, while downregulated miR-155-5p expression was confirmed to negatively regulate the transcriptional activator C/EBPβ of miR-143-3p in a variety of cells and tissues [23, 24].