FBP1 over-expression suppresses HIF-1α in papillary thyroid cancer.

Papillary thyroid carcinoma (PTC) is generally a slow-growing disease with a favorable 10-year survival rate. However, about 10% of PTC cases show significant aggressiveness, with tendencies for local invasion or distant metastasis, the mechanisms of which remain unclear. This study aims to identify predictive indicators and explore new potential targets for clinical treatment, highlighting the need for novel biomarkers and therapeutic targets. We analyzed FBP1 expression in PTC tissues. Cell proliferation, apoptosis, and invasion were evaluated with and without FBP1 overexpression in PTC cells to assess FBP1's effects. We then investigated whether FBP1 reduces PTC cell tumorigenesis and metastasis by regulating HIF-1α expression. FBP1 expression was reduced in PTC samples and showed a negative correlation with T stage. In vitro experiments indicated that FBP1 acts as a hypoxia response inhibitor, regulating tumor cells. Additionally, FBP1 inhibited the proliferation, apoptosis, and invasion of thyroid cancer cells by modulating HIF-1α expression. Our results provide new insights into the role of FBP1 in PTC progression and indicate that targeting the FBP1-HIF-1α axis could be a promising therapeutic approach for this disease.