CEACAM5在肺腺癌中的表达及临床意义

Expression and clinical significance of CEACAM5 in lung adenocarcinoma

目的通过检测癌胚抗原相关细胞黏附分子5(CEACAM5)在肺腺癌中的表达,探究其临床意义及预后。方法回顾性分析2016年8月-2017年8月在本院确诊为肺腺癌的患者51例,取肺腺癌患者病变肺部组织作为实验组;从中选取42例取癌旁组织作为对照组。采用免疫组化SP法检测肺部肺腺癌组织和癌旁组织CEACAM5的表达,并利用UALCAN数据库(http://ualcan.path.uab.edu/analysis.html)分析肺腺癌中CEACAM5的表达与性别、年龄、分期的关系;采用Kaplan-Meier生存曲线对CEACAM5进行生存分析,COX回归分析影响肺腺癌的因素,并分析肺腺癌中CEACAM5表达与CEACAM6、CEACAM1的相关性。结果 Ualcan数据库显示CEACAM5在肺腺癌组织中的表达高于正常组织(P<0.05);CEACAM5高表达的肺腺癌患者远期生存率与低表达患者相比,差异无统计学意义(P>0.05);肺腺癌中CEACAM5与CEACAM6、CEACAM1存在明显的相关性(r=0.48,0.43,P<0.05)。本实验结果显示,实验组CEACAM5阳性率62.75%高于对照组21.43%(P<0.05),其中CEACAM5阳性组在年龄、临床分期、淋巴结转移、肿瘤分化程度、肿瘤大小与阴性组比较差异有统计学意义(P<0.05);Kaplan-Meier生存曲线显示,CEACAM5阳性表达患者生存率50%,低于阴性表达生存率78.9%,两组比较log-rank值为4.324,P=0.038;COX回归分析显示,CEACAM5及临床分期、淋巴结转移均是影响肺腺癌预后的危险因素。结论肺腺癌患者CEACAM5阳性率高于癌旁组织,与肺腺癌患者预后有关,且CEACAM5及临床分期、淋巴结转移,均是影响肺腺癌预后的危险因素,推测CEACAM5可能是治疗肺腺癌的潜在靶点。

Objective To investigate the expression, clinical significance and prognosis of carcinoembryonic antigen-related cell adhesion molecule 5(CEACAM5) in lung adenocarcinoma.Methods 51 patients with lung adenocarcinoma diagnosed in our hospital from August 2016 to August 2017 were retrospectively analyzed, and the diseased lungs of lung adenocarcinoma patients were taken as the experimental group, then 42 cases were selected and the adjacent tissues were taken as the control group. The expression of CEACAM5 in lung adenocarcinoma and paracancerous tissues was detected by immunohistochemical SP method, the Ualcan database(http://ualcan.path.uab.edu/analysis.html) was used to analyze the relationships between the expression of CEACAM5 and gender, age, stage. The Kaplan-Meier survival curve was used to analyze the survival of CEACAM5. Cox regression analysis was used to analyze the influencing factors of lung adenocarcinoma, and the correlation between the expression of CEACAM5 and CEACAM6, CEACAM1 in lung adenocarcinoma was analyzed.Results Ualcan database showed that CEACAM5 expression in lung adenocarcinoma tissue was higher than that in normal tissue(P<0.05). There was no statistically significant difference in the long-term survival rate of patients with lung adenocarcinoma with high CEACAM5 expression compared with patients with low expression(P>0.05). There was significant correlation between CEACAM5, CEACAM6 and CEACAM1 in lung adenocarcinoma(r=0.48, 0.43, P<0.05). The results showed that the positive rate of CEACAM5 in the experimental group was 62.75%, which was higher than 21.43%in the control group( P < 0. 05). There were significant differences in age,clinical stage,lymph node metastasis,tumor differentiation and tumor size between the CEACAM5 positive group and the negative group( P < 0. 05). Kaplan-Meier survival curve showed that the survival rate of patients with positive expression of CEACAM5 was 50%,which was lower than 78. 9% of negative expression patients. The log rank value was 4. 324,P = 0. 038. COX regression analysis showed that CEACAM5,clinical stage,and lymph node metastasis were risk factors for the prognosis of lung adenocarcinoma. Conclusion The positive rate of CEACAM5 in lung adenocarcinoma is higher than that in adjacent tissues,which is related to the prognosis of lung adenocarcinoma,and CEACAM5,clinical stage and lymph node metastasis are risk factors affecting the prognosis of lung adenocarcinoma. It is speculated that CEACAM5 may be a potential target for the treatment of lung adenocarcinoma.