一般描述
表皮生長因子(EGF)在Henle′s環(huán)和腎遠(yuǎn)曲小管中合成。它也在唾液腺和十二指腸中產(chǎn)生。
[1]表皮生長因子(EGF)是小的促有絲分裂多肽(∼6 6 kDa),存在于許多哺乳動物物種中,分布在許多組織和體液中。
†人EGF與β-尿抑胃素相同,β-尿抑胃素是基于其胃酸分泌抑制能力而被識別和分離的多肽。
† EGF是生長因子家族的成員,其特征在于存在6個保守的半胱氨酸基序,形成了三個二硫鍵。重組人EGF中3個鏈內(nèi)二硫鍵的位置與小鼠EGF的位置相同。
†EGF與牛痘病毒19 kDa蛋白中包含的序列同源,
† 該病毒可能利用EGF受體進(jìn)入細(xì)胞
[2]† EGF對多種表皮和上皮細(xì)胞具有促有絲分裂作用,包括成纖維細(xì)胞、神經(jīng)膠質(zhì)細(xì)胞、乳腺上皮細(xì)胞、血管和角膜內(nèi)皮細(xì)胞、牛粒層細(xì)胞、兔軟骨細(xì)胞、HeLa細(xì)胞和SV40-3T3細(xì)胞。
†引用
1. Carpenter, G., and Cohen, S., Rapid enhancement of protein phosphorylation in A-431 cell membrane preparations by epidermal growth factor. Annu. Rev. Biochem., 48, 193-216 (1979).
2.Gregory, H., Isolation and structure of urogastrone and its relationship to epidermal growth factor. Nature, 257, 325-327 (1975).
3.George-Nascimento, C. et al., Characterization of recombinant human epidermal growth factor produced in yeast. Biochemistry, 27, 797-802 (1988).
4.Todaro, G.J. et al., Transforming growth factors produced by certain human tumor cells: polypeptides that interact with epidermal growth factor receptors. Proc. Natl. Acad. Sci. USA, 77, 5258-5262 (1980).
5.Blomquist, M.C. et al., Vaccinia virus 19-kilodalton protein: relationship to several mammalian proteins, including two growth factors. Proc. Natl. Acad. Sci. USA, 81, 7363-7367 (1984).
6.Eppstein, D.A. et al., Epidermal growth factor receptor occupancy inhibits vaccinia virus infection. Nature, 318, 663-665 (1985).