FGF2（fibroblast growth factor 2），癌症关联基因，基因ID：2247，该基因编码的蛋白是成纤维细胞生长因子家族的成员。FGF家族成员结合肝素，具有广泛的促有丝分裂和血管生成活性。这种蛋白与多种生物学过程有关，如肢体和神经系统发育、伤口愈合和肿瘤生长。该基因的mRNA包含多个多聚腺苷酸化位点，并且可以从非AUG（CUG）和AUG起始密码子中选择性地翻译，从而产生五种具有不同性质的不同亚型。CUG启动的亚型局限于核内并负责内分泌作用，而AUG启动的亚型主要是细胞溶质，负责该FGF的旁分泌和自分泌作用。The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. This protein has been implicated in diverse biological processes， such as limb and nervous system development， wound healing， and tumor growth. The mRNA for this gene contains multiple polyadenylation sites， and is alternatively translated from non-AUG (CUG) and AUG initiation codons， resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect， whereas， the AUG-initiated form is mostly cytosolic a。