The expression and role of trefoil factors in human tumors

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• Trefoil factor (TFF) peptides are small secreted proteins with a stable trefoil structure, comprising TFF1, TFF2, and TFF3.
• Initially identified in gastrointestinal mucosa, TFFs are also found in other tissues and play roles in mucosal protection and epithelial repair.
• TFFs are increasingly implicated in various human cancers, with expression levels often correlating with malignancy and patient prognosis.

Purpose of the Study:

• To review the current understanding of Trefoil factor (TFF) family expression and their roles in human tumors.
• To investigate the contradictory findings regarding TFFs' function as either tumor promoters or suppressors.
• To explore the potential of TFFs as diagnostic biomarkers or therapeutic targets in oncology.

Main Methods:

• Literature review of studies on TFF expression in various cancers.
• Analysis of research investigating the functional roles of TFFs in tumorigenesis, metastasis, and apoptosis.
• Synthesis of data on the correlation between TFF levels and clinical outcomes.

Main Results:

• TFF expression is frequently upregulated in tumors like gastric, colon, liver, breast, and prostate cancers, correlating with poor prognosis.
• TFFs can promote cancer progression by enhancing proliferation, invasion, metastasis, and angiogenesis, while inhibiting apoptosis.
• Conversely, some studies report TFF downregulation in certain cancers, suggesting a tumor-suppressive role via inhibiting proliferation and promoting apoptosis.

Conclusions:

• The role of Trefoil factor (TFF) peptides in cancer is complex and context-dependent, acting as both tumor promoters and suppressors.
• The precise regulatory mechanisms and clinical significance of TFFs in human tumors require further elucidation.
• TFFs present a potential avenue for future research into novel diagnostic biomarkers and therapeutic strategies for cancer treatment.