Fibroblast growth factor 2 mRNA translational machinery

The Fibroblast growth factor 2 (FGF-2) mRNA translational machinery is a specialized regulatory complex responsible for the synthesis of FGF-2 protein, a key mediator of angiogenesis and cell proliferation (Vagner et al., 1995, Mol Cell Biol). The FGF-2 mRNA is characterized by an unusually long and structured 5' untranslated region (UTR) that contains an Internal Ribosome Entry Site (IRES), enabling the protein to be produced even when global cap-dependent translation is suppressed, such as during hypoxia or nutrient deprivation in tumors (Bonnal et al., 2003, Biol Cell). This machinery facilitates the initiation of translation at multiple upstream CUG codons in addition to the standard AUG codon, producing various high- and low-molecular-weight isoforms of FGF-2 that localize to different cellular compartments (Touriol et al., 2003, Biol Cell). Because overproduction of FGF-2 is linked to tumor progression, metastasis, and resistance to anti-VEGF therapies, the translational machinery of FGF-2 has emerged as a novel therapeutic target (Presta et al., 2005, Cytokine Growth Factor Rev). Pharmacological intervention, such as with small molecules like PTC725 developed using GEMS technology, aims to selectively inhibit the translation of FGF-2 by binding to its mRNA regulatory elements, thereby reducing the levels of this potent growth factor in the tumor microenvironment (PTC Therapeutics).

Other names

FGF2 mRNA 5' UTRFGF-2 Internal Ribosome Entry SitebFGF mRNA translational control complexFGF-2 IRES

Selective inhibition of FGF-2 protein synthesis by targeting the 5' untranslated region (UTR) and Internal Ribosome Entry Site (IRES) of the FGF-2 mRNA to disrupt ribosome recruitment.