Expression and significance of Notch1 receptor and EGFR in tongue squamous cell carcinoma
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摘要: 目的 探讨Notch1受体和表皮生长因子受体(EGFR)在舌鳞癌中的表达,并分析Notch1和EGFR潜在的关系,为舌鳞癌的临床治疗提供支持。 方法 选择2010年1月—2014年12月间杭州师范大学附属医院收集的71例舌鳞癌标本、62例舌黏膜白斑标本和17例正常舌黏膜标本作为研究对象。采用免疫组化法测定3组标本中Notch1和EGFR的表达,并采用SPSS 16.0统计软件对3组数据结果进行统计学分析。 结果 正常舌黏膜、舌黏膜白斑标本中Notch1的阳性表达主要集中在角化层,基底层无表达;而EGFR的阳性表达主要集中在基底层,角化层和颗粒层则无表达。舌鳞癌标本中,高分化程度标本中Notch1的阳性细胞率越高(P<0.05),而TNM分期越高、有舌肌层浸润、有淋巴转移标本的Notch1阳性细胞率越低(P<0.05);相反,高分化程度标本中EGFR的阳性细胞率越低(P<0.05),TNM分期越高、有舌肌层浸润、有淋巴转移标本的EGFR阳性细胞率越高(P<0.05)。 结论 舌黏膜上皮中Notch1受体的表达可导致细胞的分化,Notch1水平的下调可抑制舌鳞癌,EGFR的表达在一定程度上抑制Notch1的表达,两者在舌鳞癌的发展中可能存在交互作用。Abstract: Objective To investigate the expression of Notch1 receptor and EGFR in tongue squamous cell carcinoma and analyze the potential relationship between Notch1 and EGFR. Methods A total of 71 cases of TSCC and 62 cases of tongue leukoplakia specimens and 17 cases of normal tongue mucosa specimens from January 2010 to December 2014 in our hospital were collected as study subject.The Notch1 and EGFR expression of three groups were determined by immunohistochemical method,and the results of three were statistically analyzed by SPSS 16.0. Results The Notch1 expression in normal tongue mucosa and tongue leukoplakia specimens were mainly in the horny layer and no expression in base layer.While the EGFR expression in normal tongue mucosa and tongue leukoplakia specimens were mainly in base layer and expression in horny layer and granular layer.In TSCC,Notch1-positive cell ratio of high degree specimens was higher(P<0.05) and Notch1-positive cell ratio of higher TNM stage,tongue myometrial invasion and lymph node metastasis were lower(P<0.05).While the EGFR-positive cell ratio of high degree specimens was lower(P<0.05) and EGFR-positive cell ratio of higher TNM stage,tongue myometrial invasion and lymph node metastasis were higher(P<0.05). Conclusion Notch1 receptor expression can result in the cell differentiation of tongue epithelium,and the reduction of Notch1 receptor expression can result in the inhibition of tongue epithelium.EGFR expression can inhibit the Notch1 expression,and they might have an interaction effect in the development of squamous cell carcinoma.
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