ダウンロード数 : ?
ファイル
言語
英語
著者
Arai, Mary
猪原 節之介
内容記述(抄録等)
Reepithelialization of skin which comprises epidermis and dermis has not been fully elucidated due to the complexity of the participants as well as the interactions therein. In this study, the intrinsic roles and behaviors of epidermis itself dur- ing wound closure on neonatal rat skin were explored by developing and utilizing a novel in vivo wound model, termed “shallow incisional wound” in which the injury of dermis was minimized. The shallow wounds were closed by 12 h postwounding (PW) by the migration of the wound-marginal epidermal sheets in which activated myosin light chain (p-MLC) was predominantly detected at the lateral plasma membrane of individual cells. By local administration of Rho-associated protein kinase (ROCK) inhibitor Y27632, p-MLC disappeared at the wound margin and wounds were not closed by 12 h PW. Inhibition of Rac 1 by NSC23766 also resulted in hold of wound closure by 12 h PW, though NSC23766 somewhat slowly acted on p-MLC expression. These results suggest that, without joining of dermis, epi- dermal cells have a potential ability of closing wounds by active epithelial sheet movement integrated by Rho family small GTPases-dependent extension and contraction of the individual cell bodies.
主題
Wound Closure
Reepithelialization
Rat
Neonate
Epidermis
Migration
Actomyosin
Rho Family Small GTPases
掲載誌名
CellBio
2
4
開始ページ
257
終了ページ
266
ISSN
23257776
発行日
2013
DOI
出版者
Scientific Research Publishing
資料タイプ
学術雑誌論文
ファイル形式
PDF
著者版/出版社版
出版社版
業績ID
e20401
部局
生物資源科学部
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