One ligand, multiple fates: the multi-receptor signaling network of FSTL1 and receptor-selective intervention strategies.
Follistatin-like protein 1 (FSTL1) is a secreted glycoprotein involved in cardiovascular protection, tissue repair, inflammation, fibrosis, and tumor biology. Accumulating evidence indicates that FSTL1 exerts opposing effects across tissues and disease contexts, producing either protective or pathogenic outcomes. Altho...