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eIF4E、p-eIF4E和Mcl-1在病理性瘢痕组织中的表达和意义 被引量:5

Expression and significance of mRNA and protein of eIF4E,p-eIF4E and Mcl-1 in pathological scar
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摘要 目的研究真核细胞翻译起始因子(eIF4E)、磷酸化真核细胞翻译起始因子(p-eIF4E)和髓样细胞白血病±1(myeloid cell leukemia-1,Mcl-1)在病理性瘢痕中的表达情况及其相互关系,探讨它们在瘢痕形成中的作用及机制。方法利用实时荧光定量PCR法检测正常皮肤、成熟瘢痕、增生性瘢痕和瘢痕疙瘩组织中eIF4E和Mcl-1的mRNA表达量。利用蛋白质免疫印迹(Western blotting)法检测正常皮肤、成熟瘢痕、增生性瘢痕和瘢痕疙瘩组织中eIF4E、p-eIF4E和Mcl-1的蛋白表达情况。结果正常皮肤、成熟瘢痕、增生性瘢痕和瘢痕疙瘩组织中eIF4E的mRNA及蛋白质的相对表达水平分别为1.380.4±0.450、1.230.4±0.230、5.400±0.450、5.4604±0.460和0.597.4±0.060、0.590.4±0.040、0.694.4±0.066、0.697.4±0.022。正常皮肤、成熟瘢痕、增生性瘢痕和瘢痕疙瘩组织中p-eIF4E的蛋白质表达量为0.202.4±0.037、0.216±0.019、0.426±4±0.026、0.433.4±0.02y。Mcl-1的mRNA及蛋白质的相对表达水平分别为1.510.4±0.660、1.400.4±0.530、6.650±0.850、7.2304±1.530和0.589.4±0.059、0.660.4±0.063、0.8704±0.118、0.914±0.064。病理性瘢痕组织中elFgE的mRNA及蛋白质表达显著高于正常皮肤、成熟瘢痕(P〈0.05);病理性瘢痕组织中Mcl-1的mRNA及蛋白质表达增高,与正常皮肤、成熟癜痕对照组比较差异有统计学意义(P〈0.05);病理性瘢痕组织中eIF4E的磷酸化程度高于正常皮肤和成熟瘢痕(P〈0.05)。病理性瘢痕组织中eIF4E的mRNA及蛋白质表达与Mcl-1的mRNA及蛋白质表达呈正相关。结论eIF4E在病理性瘢痕组织中表达增高,磷酸化程度增高,p-eIF4E可能通过调节Mcl-1等细胞周期调控因子而促进癜痕组织中细胞的增生,对病理性瘢痕的形成可能起着重要作用。 Objective To study the expression of eIF4E,p-eIF4E (Ser 209) and Mcl-1 gene in the pathological scars and to investigate its role and its probable mechanism in the pathogenesis of abnormal scar. Methods Quantitative real-time PCR and Western Blot was performed to detect the expression and distribution of mRNA and protein of eIF4E and Mcl-1 in hypertrophic scar( 10 cases), keloid( 10 cases), normal scar(10 cases),and normal skin( 10 cases). Western Blot was performed to detect the expression and distribution of protein of p-eIF4E in hypertrophic scar( 10 cases), keloid ( 10 cases), normal scar( 10 cases) ,and normal skin( 10 cases). Results The expression of eIF4E mRNA and protein were 1.38 ± 0.45,1.23 ±0.23 in the normal skin (10 cases);5.400 ±0.450,5.460 ±0.460 in normal scar(10 cases) ; 0. 597 ± 0.060,0. 590 ±0. 040 in hypertrophic sear( 10 cases) and 0. 694 ±0.066,0. 697 ± 0.022 in keloid (10 cases). The expression of p-eIF4E protein in the normal skin (10 eases),normal scar( 10 cases), hypertrophic scar ( 10 cases), and keloid ( 10 cases) were 0. 202 ± 0. 037、0. 216 ± 0. 019、0. 426 ±0. 026,0. 433 ±0. 027. The expression of Mcl-1 mRNA and protein were 1. 510 ±0. 660,1. 400 ± 0. 530 in the normal skin (10 cases) ; 6.65 ± 0. 85,7.23 ± 1.53 in normal scar(10 cases) ; 0. 589 ±0. 059、0. 660 ±0. 063 in hypertrophic scar( 10 cases) and 0. 870 ± 0. 118,0. 914 ± 0. 064 in the keloid (10 cases). The positive rate of mRNA and protein of eIFgE and Mcl-1 was not statistically different between the hypertrophic scar and keloid ( P 〉 0.05 ) , while they were all remarkably significant between normal scar and abnormal scar(P 〈 0 . 05 ). The phosphorylation of eIF4E in pathological scar was higher than that in control group. In pathological scar, mRNA and protein of eIF4E and Mcl-1 showed a strong positive correlation. Conclusions The result indicates that the expression of eIF4E, p-eIF4E and Mcl-1 is increased in pathological scar. elF4E plays an important role in pathological scar. Its activity is regulated by its phosphorylation. Therefore,eIF4E,p-eIF4E and Mcl-1 overexpression may play an important role in the proliferation of fibroblasts and in the pathogenesis of pathological scar.
出处 《中华整形外科杂志》 CAS CSCD 北大核心 2012年第5期360-365,共6页 Chinese Journal of Plastic Surgery
基金 福建省自然科学基金资助项目(2009J01131)
关键词 真核细胞翻译起始因子 髓样细胞白血病-1 增生性瘢痕 瘢痕疙瘩 Eukaryotic translation initiation factor 4E Myeloid cell leukelia-1 Hypertrophicscar Keloid
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参考文献14

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