Target intelligence / Profile preview

Trefoil factor 1 (TFF1)

Target
TFF1
Molecular classification
Secreted protein, Trefoil factor
01

Overview

Trefoil factor 1 (TFF1) is a small secreted protein crucial for gastrointestinal mucosal protection and repair. It stabilizes the mucus layer, modulates mucus viscosity, and exhibits both antiproliferative and antiapoptotic effects. While acting as a tumor suppressor in the stomach, it can paradoxically promote tumorigenesis in other contexts. It was originally identified as an estrogen-inducible protein (pS2) in breast cancer cells.

Other names
pS2BCEIBreast cancer estrogen-inducible proteinhP1.A
02

Mechanism of action

Unknown, but involves modulation of cell cycle inhibitors (INK4/CIP families) and caspase-9 activity

03

Biological functions

Mucosal protectionMucus modulationAntiproliferativeAntiapoptoticCell differentiation
04

Disease associations

CancerGastric carcinomaBreast cancer
05

Safety considerations

Context-dependent pro-tumoral effects in certain cancers (e.g., prostate, pancreatic)
06

Biomarkers

Breast cancer prognosis

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