医学研究生学报
醫學研究生學報
의학연구생학보
JOURNAL OF MEDICAL POSTGRADUATE
2014年
9期
923-927
,共5页
瘢痕癌%细胞周期调控%Cyclin D1%细胞周期蛋白依赖性激酶4%p21
瘢痕癌%細胞週期調控%Cyclin D1%細胞週期蛋白依賴性激酶4%p21
반흔암%세포주기조공%Cyclin D1%세포주기단백의뢰성격매4%p21
Scar cancer%Cell cycle regulation%Cyclin D1%CDK4%p21
目的:细胞周期调控机制失调是细胞增生肿瘤发生的重要因素。文中探讨细胞周期调控系统相关因子Cyclin D1-CDK4-p21在瘢痕癌中的表达及意义。方法选取遵义医学院病理教研室和中山大学附属第五医院病理科2005-2011年石蜡包埋标本,分为瘢痕癌组、病理性瘢痕组和正常皮肤组。应用组织化学法,分别检测瘢痕癌、病理性瘢痕和正常皮肤组织中Cyclin D1、CDK4、p21蛋白的表达。采用核酸分子原位杂交技术检测Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA在3组组织中的表达。对各项指标进行相关性分析,计算平均光密度(表达强度)和阳性面积(表达水平)。结果①Cyclin D1、CDK4、p21蛋白和Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA在瘢痕癌癌组织呈强阳性表达,在病理性瘢痕上皮中呈弱阳性表达,在正常皮肤表皮呈弱阳性或阴性表达。瘢痕癌组CDK4蛋白表达强度(0.273±0.024)及表达水平(0.159±0.036)较正常皮肤组(0.194±0.013、0.053±0.086)、病理性瘢痕组(0.214±0.026、0.061±0.014)升高,瘢痕癌组CDK4 mRNA表达强度(0.281±0.033)、表达水平(0.207±0.039)较正常皮肤组(0.195±0.012、0.067±0.027)、病理性瘢痕组(0.235±0.021、0.080±0.032)高,差异有统计学意义(P<0.01);瘢痕癌组Cyclin D1蛋白表达强度(0.262±0.023)、表达水平(0.141±0.036)较正常皮肤组(0.169±0.012、0.039±0.095)及病理性瘢痕组(0.176±0.039、0.065±0.013)高,瘢痕癌组Cyclin D1 mRNA表达强度(0.264±0.031)、表达水平(0.201±0.041)较正常皮肤组(0.179±0.022、0.049±0.083)及病理性瘢痕组(0.193±0.021、0.068±0.035)高,差异均有统计学意义( P<0.01);瘢痕癌组p21蛋白表达强度(0.148±0.031)、表达水平(0.275±0.032)较正常皮肤组(0.052±0.020、0.197±0.036)及病理性瘢痕组(0.062±0.021、0.214±0.032)高;瘢痕癌组p21 mRNA表达强度(0.227±0.059)较正常皮肤组(0.072±0.044、0.203±0.024)、病理性瘢痕组(0.075±0.041、0.223±0.021)高,差异均有统计学意义(P<0.01);但病理性瘢痕组与正常皮肤组各项指标比较,差异无统计学意义(P>0.05)。②相关性分析:在瘢痕癌组织中,Cyclin D1与CDK4、p21与CDK4的表达均呈正相关。结论瘢痕癌的发生与Cyclin D1、CDK4的异常表达有关,Cyclin D1可能是通过与CDK4结合形成复合物,促进细胞周期G1/S期转化,导致细胞异常增生,瘢痕癌发生。瘢痕癌中Cyclin D1-CDK4复合物活性的抑制调控,可能是CKI家族的其他成员或者有CKI家族以外的其他抑制调控因子。
目的:細胞週期調控機製失調是細胞增生腫瘤髮生的重要因素。文中探討細胞週期調控繫統相關因子Cyclin D1-CDK4-p21在瘢痕癌中的錶達及意義。方法選取遵義醫學院病理教研室和中山大學附屬第五醫院病理科2005-2011年石蠟包埋標本,分為瘢痕癌組、病理性瘢痕組和正常皮膚組。應用組織化學法,分彆檢測瘢痕癌、病理性瘢痕和正常皮膚組織中Cyclin D1、CDK4、p21蛋白的錶達。採用覈痠分子原位雜交技術檢測Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA在3組組織中的錶達。對各項指標進行相關性分析,計算平均光密度(錶達彊度)和暘性麵積(錶達水平)。結果①Cyclin D1、CDK4、p21蛋白和Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA在瘢痕癌癌組織呈彊暘性錶達,在病理性瘢痕上皮中呈弱暘性錶達,在正常皮膚錶皮呈弱暘性或陰性錶達。瘢痕癌組CDK4蛋白錶達彊度(0.273±0.024)及錶達水平(0.159±0.036)較正常皮膚組(0.194±0.013、0.053±0.086)、病理性瘢痕組(0.214±0.026、0.061±0.014)升高,瘢痕癌組CDK4 mRNA錶達彊度(0.281±0.033)、錶達水平(0.207±0.039)較正常皮膚組(0.195±0.012、0.067±0.027)、病理性瘢痕組(0.235±0.021、0.080±0.032)高,差異有統計學意義(P<0.01);瘢痕癌組Cyclin D1蛋白錶達彊度(0.262±0.023)、錶達水平(0.141±0.036)較正常皮膚組(0.169±0.012、0.039±0.095)及病理性瘢痕組(0.176±0.039、0.065±0.013)高,瘢痕癌組Cyclin D1 mRNA錶達彊度(0.264±0.031)、錶達水平(0.201±0.041)較正常皮膚組(0.179±0.022、0.049±0.083)及病理性瘢痕組(0.193±0.021、0.068±0.035)高,差異均有統計學意義( P<0.01);瘢痕癌組p21蛋白錶達彊度(0.148±0.031)、錶達水平(0.275±0.032)較正常皮膚組(0.052±0.020、0.197±0.036)及病理性瘢痕組(0.062±0.021、0.214±0.032)高;瘢痕癌組p21 mRNA錶達彊度(0.227±0.059)較正常皮膚組(0.072±0.044、0.203±0.024)、病理性瘢痕組(0.075±0.041、0.223±0.021)高,差異均有統計學意義(P<0.01);但病理性瘢痕組與正常皮膚組各項指標比較,差異無統計學意義(P>0.05)。②相關性分析:在瘢痕癌組織中,Cyclin D1與CDK4、p21與CDK4的錶達均呈正相關。結論瘢痕癌的髮生與Cyclin D1、CDK4的異常錶達有關,Cyclin D1可能是通過與CDK4結閤形成複閤物,促進細胞週期G1/S期轉化,導緻細胞異常增生,瘢痕癌髮生。瘢痕癌中Cyclin D1-CDK4複閤物活性的抑製調控,可能是CKI傢族的其他成員或者有CKI傢族以外的其他抑製調控因子。
목적:세포주기조공궤제실조시세포증생종류발생적중요인소。문중탐토세포주기조공계통상관인자Cyclin D1-CDK4-p21재반흔암중적표체급의의。방법선취준의의학원병리교연실화중산대학부속제오의원병이과2005-2011년석사포매표본,분위반흔암조、병이성반흔조화정상피부조。응용조직화학법,분별검측반흔암、병이성반흔화정상피부조직중Cyclin D1、CDK4、p21단백적표체。채용핵산분자원위잡교기술검측Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA재3조조직중적표체。대각항지표진행상관성분석,계산평균광밀도(표체강도)화양성면적(표체수평)。결과①Cyclin D1、CDK4、p21단백화Cyclin D1 mRNA、CDK4 mRNA、p21 mRNA재반흔암암조직정강양성표체,재병이성반흔상피중정약양성표체,재정상피부표피정약양성혹음성표체。반흔암조CDK4단백표체강도(0.273±0.024)급표체수평(0.159±0.036)교정상피부조(0.194±0.013、0.053±0.086)、병이성반흔조(0.214±0.026、0.061±0.014)승고,반흔암조CDK4 mRNA표체강도(0.281±0.033)、표체수평(0.207±0.039)교정상피부조(0.195±0.012、0.067±0.027)、병이성반흔조(0.235±0.021、0.080±0.032)고,차이유통계학의의(P<0.01);반흔암조Cyclin D1단백표체강도(0.262±0.023)、표체수평(0.141±0.036)교정상피부조(0.169±0.012、0.039±0.095)급병이성반흔조(0.176±0.039、0.065±0.013)고,반흔암조Cyclin D1 mRNA표체강도(0.264±0.031)、표체수평(0.201±0.041)교정상피부조(0.179±0.022、0.049±0.083)급병이성반흔조(0.193±0.021、0.068±0.035)고,차이균유통계학의의( P<0.01);반흔암조p21단백표체강도(0.148±0.031)、표체수평(0.275±0.032)교정상피부조(0.052±0.020、0.197±0.036)급병이성반흔조(0.062±0.021、0.214±0.032)고;반흔암조p21 mRNA표체강도(0.227±0.059)교정상피부조(0.072±0.044、0.203±0.024)、병이성반흔조(0.075±0.041、0.223±0.021)고,차이균유통계학의의(P<0.01);단병이성반흔조여정상피부조각항지표비교,차이무통계학의의(P>0.05)。②상관성분석:재반흔암조직중,Cyclin D1여CDK4、p21여CDK4적표체균정정상관。결론반흔암적발생여Cyclin D1、CDK4적이상표체유관,Cyclin D1가능시통과여CDK4결합형성복합물,촉진세포주기G1/S기전화,도치세포이상증생,반흔암발생。반흔암중Cyclin D1-CDK4복합물활성적억제조공,가능시CKI가족적기타성원혹자유CKI가족이외적기타억제조공인자。
Objective Dysfunction of cell cycle regulation is one of the key factors for cellular carcinogenesis .This paper aimed to study the expression and significance of cell cycle regulation protein Cyclin D 1-CDK4-p21 in scar cancer . Methods The expressions of Cyclin D1, CDK4 and p21 protains were detected in scar cancer group , pathological scar group and normal skin group respectively by using immunohistochemical staining (SP).The mRNA expression levels of Cyclin D1, CDK4 and p21 were detected by the use of nucleic acid-mediated in-situ hybridization .Correlation analysis was made on the indexes , and the average optical density and positive area were analyzed using image analysis . Results The expressions of Cyclin D1, CDK4 and p21 protains and the mRNA ex-pression levels of cyclin D1, CDK4 and p21 were high in scar cancer group, low in pathological scar group , and negative in normal skin group.The mean optical density and positive area in scar cancer group were significantly different from pathological scar group and normal skin group (P<0.01).But no significant difference was found be-tween pathological scar group and normal skin group (P>0.05).In terms of correlation analysis , the expressions of Cyclin D 1 and CDK4 as well as p21 and CDK4 in scar cancer tissue were both in posi-tive correlations. Conclusion The occurrence of scar cancer is related to the abnormal expression of Cyclin D 1 and CDK4.The complex formed by Cyclin D1 and CDK4 may promote the G1/S transition, proliferation and tumorigenesis of scar cancer .In scar canc-er, the inhibition of Cyclin D1-CDK4 complex might be caused by other members of CKI family or even inbibitors of other families apart from CDK family.