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作 者:霍嘉慧 孙苏静 耿志军[1] 孙晓艳[1,3] 付小兵[1,3]
机构地区:[1]解放军总医院第一附属医院全军创伤修复与组织再生重点实验室暨皮肤损伤修复与组织再生北京市重点实验室,北京100048 [2]天津医科大学,天津300070 [3]解放军总医院,北京100853
出 处:《感染.炎症.修复》2016年第3期136-139,F0003,共5页Infection Inflammation Repair
基 金:国家自然科学基金资助项目(30901564;81101883;81245185;81372067;81121004;81230041);国家973计划项目(2012CB518105)
摘 要:目的:探讨β2肾上腺素受体(β2-AR)在皮肤创伤修复上皮间质化(EMT)过程中的作用机制及意义。方法:采用免疫印迹法(Western blot)、逆转录-聚合酶链式反应(RT-PCR)、免疫荧光技术等实验方法,体外观察β2-AR激动剂(ISO)和抑制剂(ICI)对上皮细胞间质化标志物(α-平滑肌肌动蛋白、波形蛋白、snail)表达的影响及创面皮肤上皮化标志物(E-钙黏附素)表达的变化。结果:β2-AR可通过介导皮肤创面愈合的EMT过程,促进表皮细胞向间质表型转化,且运动和迁移能力在该过程中不断增强。结论:β2-AR是皮肤上皮间质化的关键分子,其介导的EMT过程是皮肤创面愈合的生物学基础。Objective: To explore the mechanism and significance of β2-adrenergic receptor (β2-AR) in the procedure of epithelial mesenchymal transition (EMT) during wound healing and tissue regeneration. Methods: The influence of β2-AR agonist (ISO) and inhibitor (ICI) on the expression of markers of mesenchymal transition (a-smooth muscle actin, vimentin, snail) or marker of epithelization (E-cadherin) in epidermis cells during wound healing and tissue regeneration was observed using western blot, reverse transcription polymerase chain reaction (RT-PCR) and immunofluorescence. Results: The epithelial cells gained mesenchymal phenotypic feature, and got stronger ability in movement and migration. β2-AR was a critical molecule which mediated EMT process. Conelusions: β2-AR is a key molecule in the procedure of EMT, and β2-AR mediated EMT is a biological basis of skin wound healing and matrix remodeling.
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