title: Epidermal growth factor (EGF) antagonizes transforming growth factor (TGF)-beta1-induced collagen lattice contraction by human skin fibroblasts.
abstract: Wound contraction plays an important role in healing, but in extreme conditions, it may lead to excessive scar formation and pathological wound contracture. To date, the key regulator of excessive contracture is known to be transforming growth factor-beta (TGF-beta1). In this study, we have evaluated epidermal growth factor (EGF) antagonism in fibroblast-populated collagen lattice (FPCL) gel contraction, which has been generally used as an in vitro model thought to mimic wound contraction in vivo. As expected, TGF-beta1 treatment enhanced normal fibroblast-induced collagen gel contraction in a dose-dependent manner. In contrast, EGF did not affect normal gel formation, but significantly antagonized TGF-beta1-induced gel formation (p<0.05 at 100 ng/ml), whereas the other growth factor, platelet-derived growth factor (PDGF), did not altered either normal or TGF-beta1-induced gel contractions. Similarly, EGF treatment, but not PDGF, also significantly suppressed TGF-beta1 release that was autologously elicited by TGF-beta1 treatment (p<0.01 at 100 ng/ml). Therefore, the results suggest that EGF may negatively regulate the role of TGF-beta1 through attenuating autologous release of TGF-beta1.
authors.affiliation: R&D Center, Daewoong Pharm. Co., Ltd., Sungnam, Kyunggi-Do, S. Korea. joonchem@daewoong.co.kr
authors.forename: J S
authors.initials: JS
authors.lastname: Park
authors.forename: J Y
authors.initials: JY
authors.lastname: Kim
authors.forename: J Y
authors.initials: JY
authors.lastname: Cho
authors.forename: J S
authors.initials: JS
authors.lastname: Kang
authors.forename: Y H
authors.initials: YH
authors.lastname: Yu
mesh_terms: D002455:Cell Division / Q000187:drug effects; D003094:Collagen / Q000502:physiology*; D004797:Enzyme-Linked Immunosorbent Assay; D004815:Epidermal Growth Factor / Q000494:pharmacology*; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects* / Q000502:physiology; D006801:Humans; D012867:Skin / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D012879:Skin Physiological Phenomena / Q000187:drug effects*; D016212:Transforming Growth Factor beta / Q000037:antagonists & inhibitors* / Q000096:biosynthesis / Q000494:pharmacology; D053773:Transforming Growth Factor beta1; D014945:Wound Healing / Q000187:drug effects / Q000502:physiology
chemical_list: C508960:TGFB1 protein, human; D016212:Transforming Growth Factor beta; D053773:Transforming Growth Factor beta1; D004815:Epidermal Growth Factor; D003094:Collagen