CD147在角质形成细胞分化过程中的表达和作用  

CD147 Expression in Keratinocytes and Its Role in Keratinocyte Differentiation

作　　者：陈翔[1] 李吉[1] 谢红付[1] 陈服文[1] 

机构地区：[1]中南大学湘雅医院皮肤科,长沙410008

出　　处：《中华皮肤科杂志》2003年第6期318-321,共4页Chinese Journal of Dermatology

基　　金：国家自然科学基金(20040028;30200248);教育部留学回国人员科研启动基金(2003);湖南省高校学科带头人培养对象基金(2002)

摘　　要：目的明确CD147在正常角质形成细胞和鳞状细胞癌细胞分化过程中的表达和作用。方法运用免疫组化法检测不同分化水平的寻常疣以及良性、癌前和恶性表皮肿瘤中CD147的表达。运用免疫印迹法观察CD147在培养角质形成细胞(HaCaT)和鳞状细胞癌细胞(HSC-5)钙诱导分化过程中的表达变化。并观察高钙培养和CD147抗体对HaCaT和HSC-5细胞分化相关形态学的影响。结果寻常疣及脂溢性角化病的CD147表达方式与正常表皮相同。光线性角化病及Bowen病中部分病例阳性。鳞状细胞癌中CD147的表达随分化降低而显著升高。HaCaT及HSC-5细胞中CD147的表达均随钙诱导的分化过程而降低。CD147抗体可与高钙培养一样诱导HaCaT及HSC-5细胞的分化。结论CD147分子是一种新的低分化角质形成细胞标志蛋白,并可能抑制正常角质形成细胞和鳞状细胞癌细胞的分化。Objective To investigate the expression and role of CD147in the differentiation of nor-mal keratinocytes and squamous cell carcinoma(SCC)cells.Methods CD147expression was analyzed immunohistochemically in20cases of verruca vulgaris(VV),various benign,premalignant and malignant epidermal tumors including21cases of seborrheic keratosis(SK),20actinic keratosis(AK),20Bowen' s disease(BD)and57squamous cell carcinoma.SCCs were classified using Broder's system of grading.Im-munoblot analysis was used to observe CD147expression in normal keratinocyte(HaCaT)and SCC cell(HSC-5)in vitro during their differentiation process induced by calcium.The effects of high-calcium medi-um culture and CD147antibody on the differentiation-related morphology of HaCaT and HSC-5cells were also observed.Results The same staining pattern of CD147was shown in20VV and21SK specimens as in normal epidermis.Positive CD147staining throughout the lesion was shown in4of20AK and7of20BD specimens.Positive CD147staining at the periphery of tumor nests was shown in8of20gradeⅠSCC specimens.CD147expressed throughout tumor nests in16of20gradeⅡSCC and all of the17gradeⅢSCC specimens.Immunoblot analysis revealed decreased CD147expression in both HaCaT and HSC-5cells during differentiation process induced by calcium.Not only high-calcium medium but also CD147antibody could induce differentiation-related morphology of both HaCaT and HSC-5cells in vitro.Conclusion These results suggest that CD147is a novel low-differentiation marker of keratinocyte,which might inhibit the dif-ferentiation of both normal keratinocyte and SCC cell.

关 键 词：CD147 角质形成细胞 细胞分化 鳞状细胞癌 免疫组化法 细胞培养 

分 类 号：R751[医药卫生—皮肤病学与性病学]