龙血素B对角质形成细胞增殖和迁移的影响
2020-09-02张文瑞许春姣郭怡婷孙煜梅
张文瑞 许春姣 郭怡婷 孙煜梅



[摘要]目的:观察龙血素B(Loureirin B,LB)对体外培养人永生化角质形成细胞(Immortalized human keratinocytes,HaCaT)增殖和迁移的影响,探究LB是否促进创面愈合再上皮化过程。方法:噻唑蓝(MTT)法检测不同浓度LB对体外培养HaCaT细胞增殖的影响,细胞划痕实验分析LB对HaCaT细胞迁移的影响。结果:5、10、25、50μg/ml LB呈剂量依赖性抑制HaCaT细胞增殖(P<0.05),10、25μg/ml LB呈剂量依赖性抑制划痕愈合及HaCaT细胞迁移(P<0.01)。结论:LB具有显著抑制HaCaT细胞增殖和迁移的作用,提示LB可能抑制创面愈合再上皮化过程。
[关键词]龙血素B;角质形成细胞;细胞增殖;创面愈合;再上皮化
[中图分类号]Q343.6 [文献标志码]A [文章编号]1008-6455(2020)08-0031-03
The Effects of Loureirin B on Proliferation and Migration of HaCaT Cells
ZHANG Wen-rui,XU Chun-jiao,GUO Yi-ting,SUN Yu-mei
(Central of Stomatology,Xiangya Hospital,Central South University,Changsha 410008,Hunan,China)
Abstract: Objective To observe the effects of Loureirin B (LB) on proliferation and migration of human immortalized human keratinocytes (HaCaT) in vitro, and explore whether LB can promote the re-epithelialization process of wound healing. Methods The effects of different concentrations of LB on proliferation of HaCaT cells were evaluated by MTT assay, and the effects on migration of HaCaT cells were analyzed by scratch wound assays. Results 5, 10, 25, 50μg/ml LB inhibited proliferation of HaCaT cells in a dose-dependent manner (P<0.05). 10, 25μg/ml LB suppressed scratch closure and migration of HaCaT cells in a dose-dependent manner (P<0.01). Conclusion LB can significantly inhibit proliferation and migration of HaCaT cells, suggesting that LB may have an inhibitory effect on the re-epithelialization process of wound healing.
Key words: Loureirin B; keratinocytes; cell proliferation; wound healing; re-epithelialization
龙血竭(Dragons blood,DB)为龙血树属植物树干受损伤后,在微生物侵染和或自然氧化作用下产生的含脂木材经乙醇提取得到的树脂,是血竭的国产替代品[1-2]。龙血竭具有活血化瘀、止血、降糖降脂、抗菌、增强免疫、促进表皮修复、抗炎、镇痛、抗肿瘤等药理作用,临床上用于治疗冠心病、消化性溃疡、软组织损伤、放射性皮炎、烧伤、壓疮等[3]。创面愈合基本过程有三期[4]:①炎症期;②增生期:包括再上皮化、血管再生、纤维组织增生和伤口收缩;③改建期。大量研究表明龙血竭促进创面愈合[5-7],但研究中多使用其简单提取物或成方制剂,涉及其内在有效成分的研究不多,具体促进创面愈合的活性成分尚未明确。龙血素B(Loureirin B,LB)是龙血竭中含量较为丰富的二氢查耳酮类化合物,具有抗氧化[8]、活血[9]、抗炎[10]、镇痛[11]等作用,本研究通过观察LB对体外培养的HaCaT细胞增殖及迁移的影响,探究LB是否促进创面愈合再上皮化过程。
1 材料和方法
1.1 细胞:人永生化角质形成细胞(HaCaT),由中南大学湘雅医院皮肤科实验室馈赠。
1.2 药品与试剂:龙……
