法医学杂志 ›› 2016, Vol. 32 ›› Issue (1): 7-12.DOI: 10.3969/j.issn.1004-5619.2016.01.002

• 论著 • 上一篇    下一篇

小鼠皮肤损伤愈合过程中PI3K/Akt通路的作用

高彦令1,2,刘长胜3,赵  锐1,王林林1,李姗姗1,刘  敏1,张  淼1,姜述堃1,田志岭1,王  檬1,官大威1   

  1. (1. 中国医科大学法医学院法医病理学教研室,辽宁 沈阳 110001; 2. 苏州市公安局刑警支队,江苏 苏州 215000; 3. 鞍山市人民检察院技术处,辽宁 鞍山 114001)
  • 发布日期:2016-02-25 出版日期:2016-02-28
  • 通讯作者: 官大威,男,博士,教授,博士研究生导师,主要从事法医病理学教学、科研和鉴定;E-mail:dwguan@mail.cmu.edu.cn
  • 作者简介:高彦令(1987—),男,硕士研究生,主要从事法医病理学科研和教学;E-mail:gaoyanling_0116@126.com
  • 基金资助:

    国家自然科学基金资助项目(81273342);鞍山市科学技术项目(2060499)

Effects of PI3K/Akt Pathway in Wound Healing Process of Mice Skin

GAO YAN-LING1,2, LIU CHANG-SHENG3, ZHAO RUI1, WANG LIN-LIN1, LI SHAN-SHAN1, LIU MIN1, ZHANG MIAO1, JIANG SHU-KUN1, TIAN ZHI-LING1, WANG MENG1, GUAN DA-WEI1   

  1. (1. Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang 110001, China; 2. Criminal Police Branch, Public Security Bureau of Suzhou, Suzhou 215000, China; 3. Department of Technology, People’s Procuratorate of Anshan, Anshan 114001, China)
  • Online:2016-02-25 Published:2016-02-28

摘要: 目的 探讨小鼠皮肤损伤愈合过程中损伤区磷脂酰肌醇-3-激酶(phosphatidylinositol-3-kinase,PI3K)、磷酸化磷脂酰肌醇-3-激酶(phospho-PI3K,p-PI3K)、蛋白激酶B(protein kinase B,PKB,又称Akt)和磷酸化蛋白激酶B(phospho-Akt,p-Akt)的表达及其随时间的变化规律。 方法 应用免疫组织化学染色、Western印迹法和real-time PCR技术检测小鼠皮肤损伤不同时间段PI3K、Akt、p-PI3K及p-Akt的变化情况。 结果 免疫组织化学染色显示,皮肤损伤后,PI3K、p-Akt阳性染色出现在单核细胞和成纤维细胞,峰值出现在组织修复期。Western印迹法显示,各个时间段均有PI3K、p-PI3K、Akt、p-Akt的阳性条带,其中p-PI3K、p-Akt表达的峰值出现在炎症期和增生期,PI3K、Akt表达的高峰出现在组织重建期。real-time PCR结果显示,PI3K mRNA的峰值出现在炎症期和组织重建期,Akt mRNA的峰值出现在组织重建期。 结论 在皮肤损伤愈合过程中,PI3K、Akt、p-PI3K及p-Akt的表达变化呈现不同的规律性并有较好的时间依赖性,PI3K/Akt通路的表达规律可以用于法医学损伤时间推断。

关键词:  , 法医病理学, 创伤和损伤, 皮肤, 磷脂酰肌醇-3-激酶, 磷酸化磷脂酰肌醇-3-激酶, 蛋白激酶B, 磷酸化蛋白激酶B, 小鼠

Abstract: Objective To investigate the expressions and time-dependent changes of phosphatidylinositol-3-kinase (PI3K), phospho-P13K (p-PI3K), protein kinase B (PKB/Akt) and phospho-Akt (p-Akt) during wound healing process of mice skin. Methods The changes of PI3K, p-PI3K, Akt and p-Akt expression in skin wound were detected by immunohistochemistry, Western blotting and real-time PCR. Results Immunohistochemistry showed the expression of PI3K and p-Akt were observed in mononuclear and fibroblast after skin wound, and reached peak in reconstruction. The positive bands of PI3K, p-PI3K, Akt and p-Akt were observed in all time points of the wound healing process by Western blotting. The expression peak of p-PI3K and p-Akt showed in inflammation and proliferation; the expression peak of PI3K and Akt in reconstruction. Real-time PCR showed the expression peak of PI3K mRNA in inflammation and reconstruction and the peak of Akt mRNA in reconstruction. Conclusion During the wound healing process, the expressions of PI3K, Akt, p-PI3K and p-Akt show different changes with significant correlation to wound time. The expression of PI3K/Akt may be a valuable marker for wound time estimation.

Key words: forensic pathology, wounds and injuries, skin, phosphatidylinositol 3-kinase, phospho-PI3K, protein kinase B, phospho-Akt, mice

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