Human KGF-1 also known as Fibroblast growth factor 7 (FGF-7), is encoded by the FGF7 gene. KGF-1 only binds to the b splice form of the tyrosine kinase receptor, FGFR2b KGFR. Affinity between KGF-1 and its receptor can be increased by heparin or heparan sulfate proteoglycan. FGF-10, also called keratinocyte growth factor 2 (KGF-2), shares 51 % amino acid sequence identity and similar function to KGF-1, but uses an additional receptor, FGFR2c. KGF-1 plays an important role in the regulation of embryonic development, cell proliferation and cell differentiation. KGF-1 actives on keratinocytes, and exhibits mitogenic activity for epidermal cells, but essentially no activity for fibroblasts. KGF-1 has species crossactive, human KGF-1 shares 96 % amino acid sequence identity with murine, and 92 % with rat.
1. Mattei MG, deLapeyriere O, Bresnick J, et al. 1995. Mamm Genome. 6:196-7.
2. Kelley MJ, Pech M, Seuanez HN, et al. 1992. Proc Natl Acad Sci U S A. 89:9287-91.
3. de Giorgi V, Sestini S, Massi D, et al. 2007. Dermatol Clin. 25:477-85, vii.
4. Eswarakumar VP, Lax I, Schlessinger J. 2005. Cytokine Growth Factor Rev. 16:139-49.
5. Belleudi F, Leone L, Nobili V, et al. 2007. Traffic. 8:1854-72.
6. Ornitz DM, Xu J, Colvin JS, et al. 1996. J Biol Chem. 271:15292-7.
7. Zhang X, Ibrahimi OA, Olsen SK, et al. 2006. J Biol Chem. 281:15694-700.