PTEN、P130Cas与皮肤瘢痕癌上皮间质转化的关系研究

摘要

Objective To study the relation between the expression of P130 Crk-associated substrate (P130Cas),phosphatase and tensin homolog (PTEN)and the epithelial-mesenchymal transition (EMT) of skin scar carcinoma.Methods Tissues of skin scar carcinoma,scar and normal skin were collected from 8 patients who were pathologically diagnosed as skin scar carcinoma with high differentiated squamous cell carcinoma.The expression of PTEN,P130Cas,E-cadherin and Vimentin in normal skin,skin scar and skin scar carcinoma tissues were detected by immunohistochemical method of S-P.Results The expression of PTEN,P130Cas and E-cadherin in normal skin,scar and skin scar carcinoma tissues were all significantly different (P ＜ 0.05).The expression of Vimentin in skin scar carcinoma tissues were significantly increased than that in normal skin and skin scar tissues,but there was no statistically significance difference between skin scar tissues and normal skin (P ＞ 0.05).The expression of PTEN in skin scar carcinoma tissues was negatively correlated with P130Cas (r =-0.78,P =0.023) and positively correlated with E-cadherin (r =0.83,P =0.011),but there were no correlation between PTEN and Vimentin (P ＞ 0.05);The expressions of P130Cas in skin scar carcinoma tissues was negatively correlated with Ecadherin (r =-0.74,P =0.035),but there were no statistically significant correlation between P130Cas and Vimentin (P＞0.05).Conclusions Both PTEN and P130Cas involved in the EMT process of skin scar carcinoma and may be an important mechanism in scar carcinogenesis.%目的 探讨磷酸酯酶及张力蛋白同源物(PTEN)、P130 Crk相关底物(P130Cas)与瘢痕癌上皮间质转化(EMT)的关系.方法 收集8例瘢痕癌患者的瘢痕癌、癌旁瘢痕和正常皮肤组织,采用免疫组织化学法(S-P法)检测正常皮肤、瘢痕、瘢痕癌组织中PTEN、P130Cas、E-钙黏蛋白(E-cadherin)、波形蛋白(Vimentin)的表达.结果 PTEN、P130Cas、E-cadherin在瘢痕癌、瘢痕、正常皮肤组织的表达水平差异均有统计学意义(P＜0.05);Vimentin在正常皮肤、瘢痕组织内呈阴性表达,两者差异无统计学意义(P＞0.05),但与瘢痕癌组织相比较,差异均有统计学意义(P＜0.05).PTEN与P130Cas在瘢痕癌中的表达呈负相关(r=-0.78,P=0.023);瘢痕癌中E-cadherin的表达与PTEN的表达呈正相关(r=0.83,P=0.011),与P130Cas呈负相关(r=-0.74,P=0.035),PTEN、P130 Cas与Vimentin的表达不相关.结论 PTEN与P130Cas可能通过影响上皮间质转化现象在瘢痕恶变过程中起重要作用.