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Invitrogen
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Compatible with Direct ELISA
FGF2 (Fibroblast Growth Factor 2, basic FGF) is a member of the FGF family that regulates cell proliferation, differentiation, and angiogenesis through high-affinity cell surface FGF receptors. The human FGF2 gene is located on chromosome 4q. FGF2 is involved in limb and nervous system development, wound healing, and tumor growth. FGF2 exists as five isoforms generated by alternative translation from AUG and non-AUG (CUG) start codons. The 18 kDa isoform is mainly cytosolic and mediates paracrine and autocrine signaling through cell surface receptors. The higher molecular weight isoforms (22-34 kDa) localize to the nucleus and function through intracrine mechanisms independent of membrane receptors. Dysregulation of FGF2 has been associated with diseases such as Kaposi sarcoma and corneal neovascularization.
VEGF (Vascular Endothelial Growth Factor) is a 45 kDa homodimeric, disulfide-linked glycoprotein that is a central regulator of angiogenesis and tumor progression. It promotes endothelial cell survival, proliferation, migration, and vascular permeability. The VEGF family includes VEGF-A, -B, -C, -D, -E, and PlGF. VEGF signals primarily through the tyrosine kinase receptors VEGFR-1 (FLT1) and VEGFR-2 (KDR/FLK1), expressed mainly on endothelial cells. These pathways are essential for embryonic vascular development and tumor angiogenesis. Alternative splicing produces multiple VEGF isoforms with distinct properties. A soluble form of VEGFR-1 (sFLT1) can bind VEGF and inhibit angiogenesis. Elevated VEGF levels are associated with POEMS syndrome (Crow-Fukase syndrome).
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