Forkhead Box Transcription Factors in Cancer Progression

Forkhead Box (FOX) transcription factors constitute an evolutionarily conserved family of regulators defined by a characteristic winged-helix DNA-binding domain. Members of this family, including the FOXM, FOXO, FOXC and FOXP subfamilies, orchestrate diverse physiological processes such as cell cycle progression, differentiation, DNA damage repair and apoptosis. In cancer, dysregulation of FOX proteins contributes to virtually every hallmark of malignancy. Overexpression of proliferative drivers such as FOXM1 promotes entry into S and G2/M phases and stabilises mitotic programmes, while loss of tumour-suppressive FOXO factors impairs cell-cycle checkpoints and facilitates survival under stress. Post-translational modifications—phosphorylation by kinases such as PLK1, c-Src and ABL1, and ubiquitin-mediated degradation—fine-tune FOX activity, enabling dynamic responses to oncogenic signals. Beyond intrinsic proliferative effects, FOX factors modulate the tumour microenvironment: they induce epithelial–mesenchymal transition, enhance angiogenic factor expression and reprogramme immune infiltrates, for example by polarising macrophages towards pro-tumoural phenotypes. In addition, aberrant FOX signalling underlies resistance to chemotherapeutic agents by upregulating DNA repair components, drug efflux transporters and nucleotide synthesis enzymes. Together, these pleiotropic roles render FOX transcription factors both biomarkers of disease progression and attractive therapeutic targets across multiple cancer types.

Research from Nature Portfolio

Recent work has elucidated the pivotal role of FOXM1 in mediating resistance to 5-fluorouracil in colorectal cancer. Overexpression of FOXM1 amplifies thymidylate synthase and related nucleotide metabolism genes, driving chemoresistance. Genetic or pharmacological inhibition of FOXM1 restores drug sensitivity, induces DNA damage and promotes apoptosis in resistant cell lines, highlighting this axis as a targetable vulnerability to overcome treatment failure.

Forkhead Box Transcription Factors in Cancer Progression publication trend

The graph below shows the total number of articles in forkhead box transcription factors in cancer progression across all publications each year (not limited to Nature Index journals).

Technical terms

Transcription factor: Protein that binds specific DNA sequences to regulate gene expression.

Forkhead box domain: Conserved winged-helix motif enabling DNA binding by FOX family proteins.

Phosphorylation: Addition of a phosphate group by kinases, modulating protein activity, stability or localisation.

Ubiquitin–proteasomal degradation: Cellular pathway that tags proteins with ubiquitin for destruction by the proteasome.

Tumour microenvironment: Complex milieu of stromal, immune and vascular cells interacting with tumour cells.

Epithelial–mesenchymal transition (EMT): Process by which epithelial cells acquire migratory and invasive mesenchymal characteristics.

Chemoresistance: Ability of cancer cells to survive and proliferate despite chemotherapy treatment.

References

1. ABL1-mediated phosphorylation promotes FOXM1-related tumorigenicity by Increasing FOXM1 stability. Cell Death & Differentiation (2024).
2. Invasive FoxM1 phosphorylated by PLK1 induces the polarization of tumor-associated macrophages to promote immune escape and metastasis, amplified by IFITM1. Journal of Experimental & Clinical Cancer Research (2023).
3. Coordinated activation of c-Src and FOXM1 drives tumor cell proliferation and breast cancer progression. Journal of Clinical Investigation (2023).
4. FOXM1 modulates 5-FU resistance in colorectal cancer through regulating TYMS expression. Scientific Reports (2019).