title: Different effects of 25-kDa amelogenin on the proliferation, attachment and migration of various periodontal cells.
abstract: Previous studies have assumed that amelogenin is responsible for the therapeutic effect of the enamel matrix derivative (EMD) in periodontal tissue healing and regeneration. However, it is difficult to confirm this hypothesis because both the EMD and the amelogenins are complex mixtures of multiple proteins. Further adding to the difficulties is the fact that periodontal tissue regeneration involves various types of cells and a sequence of associated cellular events including the attachment, migration and proliferation of various cells. In this study, we investigated the potential effect of a 25-kDa recombinant porcine amelogenin (rPAm) on primarily cultured periodontal ligament fibroblasts (PDLF), gingival fibroblasts (GF) and gingival epithelial cells (GEC). The cells were treated with 25-kDa recombinant porcine amelogenin at a concentration of 10 microg/mL. We found that rPAm significantly promoted the proliferation and migration of PDLF, but not their adhesion. Similarly, the proliferation and adhesion of GF were significantly enhanced by treatment with rPAm, while migration was greatly inhibited. Interestingly, this recombinant protein inhibited the growth rate, cell adhesion and migration of GEC. These data suggest that rPAm may play an essential role in periodontal regeneration through the activation of periodontal fibroblasts and inhibition of the cellular behaviors of gingival epithelial cells.
authors.affiliation: Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639 Zhi Zao Ju Road, Shanghai 200011, China.
authors.forename: Xiting
authors.initials: X
authors.lastname: Li
authors.forename: Rong
authors.initials: R
authors.lastname: Shu
authors.forename: Dali
authors.initials: D
authors.lastname: Liu
authors.forename: Shaoyun
authors.initials: S
authors.lastname: Jiang
mesh_terms: D053523:Amelogenin / Q000235:genetics / Q000494:pharmacology / Q000502:physiology*; D000818:Animals; D002448:Cell Adhesion; D002465:Cell Movement; D049109:Cell Proliferation; D002478:Cells, Cultured; D005347:Fibroblasts / Q000187:drug effects / Q000502:physiology; D006801:Humans; D010513:Periodontal Ligament / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D051381:Rats; D011994:Recombinant Proteins / Q000235:genetics / Q000494:pharmacology; D012038:Regeneration; D013552:Swine
chemical_list: D053523:Amelogenin; D011994:Recombinant Proteins