一般描述
表皮生長因子(EGF)在Henle′s環和腎遠曲小管中合成。它也在唾液腺和十二指腸中產生。
[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受體進入細胞
[2]† EGF對多種表皮和上皮細胞具有促有絲分裂作用,包括成纖維細胞、神經膠質細胞、乳腺上皮細胞、血管和角膜內皮細胞、牛粒層細胞、兔軟骨細胞、HeLa細胞和SV40-3T3細胞。
†引用
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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).