中国全科医学 ›› 2020, Vol. 23 ›› Issue (2): 183-188.DOI: 10.12114/j.issn.1007-9572.2019.00.733

• 专题研究 • 上一篇    下一篇

循环肿瘤细胞在晚期非小细胞肺癌化疗疗效监测及预后预测中的价值研究

张孝钦*,陈玄一,邬盛昌   

  1. 310014浙江省杭州市,浙江省人民医院 杭州医学院附属人民医院呼吸内科
    *通信作者:张孝钦,副主任医师;E-mail:zhangxiaoqin197907@163.com
  • 出版日期:2020-01-15 发布日期:2020-01-15
  • 基金资助:
    浙江省科技厅公益性技术应用研究计划(2017C33124)

Value of Circulating Tumor Cells in Chemotherapy Efficacy Monitoring and Prognosis Prediction of Advanced Non-small Cell Lung Cancer 

ZHANG Xiaoqin*,CHEN Xuanyi,WU Shengchang   

  1. Department of Respiratory Medicine,Zhejiang Provincial People's Hospital/People's Hospital of Hangzhou Medical College,Hangzhou 310014,China
    *Corresponding author:ZHANG Xiaoqin,Associate chief physician;E-mail:zhangxiaoqin197907@163.com
  • Published:2020-01-15 Online:2020-01-15

摘要: 背景 晚期非小细胞肺癌(NSCLC)化疗疗效评判依靠肺部CT病灶前后对比,缺乏有效的短期疗效考核手段。如果某项检测指标能动态实时监测化疗疗效以指导肺癌的个体化治疗,该检测指标有着重要的临床意义。目的 探讨循环肿瘤细胞(CTCs)在晚期NSCLC化疗疗效监测及预后预测中的价值。方法 选择2015年12月—2016年12月浙江省人民医院收治的晚期NSCLC患者50例为肺癌组,同时选择同时期体检健康志愿者50例为对照组,采用免疫磁珠富集技术结合荧光细胞化学染色法检测NSCLC患者化疗前后及对照者CTCs表达情况,随访截至2018年12月,统计其总生存期(OS)和无进展生存期(PFS)。分析CTCs表达情况与临床特点、治疗效果及预后的相关性。结果 肺癌组CTCs阳性率为78.0%(39/50),对照组CTCs阳性率为0,差异有统计学意义(χ2=63.934,P<0.001)。CTCs阳性与CTCs阴性患者性别、年龄、吸烟率、病理类型、分化程度、淋巴结分期比较,差异均无统计学意义(P>0.05);CTCs阳性患者远处转移率高于CTCs阴性患者,临床分期晚于CTCs阴性患者(P<0.05)。化疗第1周期结束后CTCs阳性率低于化疗前〔36.0%(18/50)与78.0%(39/50),χ2=4.432,P=0.035〕。化疗第1周期结束后CTCs动态变化情况与化疗第2周期结束后RECIST 1.1评价对晚期NSCLC患者化疗效果的评价具有一致性(Kappa=0.528,P<0.001)。影像学评估为疾病进展的18例患者,CTCs阳性14例,远处转移12例;CTCs阴性4例,均无远处转移,两者远处转移率比较,差异有统计学意义(χ2=10.286,P=0.001)。CTCs阳性患者PFS和OS均短于CTCs阴性患者(P<0.05)。结论 应用免疫磁珠富集技术结合荧光细胞化学染色法检测CTCs具有可行性。CTCs阳性表达与远处转移及临床分期有关。CTCs与晚期NSCLC的化疗疗效及预后具有相关性,可作为敏感的化疗疗效监测及预后预测的考核指标。

关键词: 癌, 非小细胞肺, 肿瘤细胞, 循环, 抗肿瘤联合化疗方案, 治疗结果, 预后

Abstract: Background The evaluation of chemotherapy efficacy of advanced non-small cell lung cancer(NSCLC) relies on pre-and post-treatment comparison of CT lung lesions,lacking of effective short-term efficacy assessment methods.It is of great significance to find an index that can dynamically and real-timely monitor the efficacy of chemotherapy to guide the individualized treatment of lung cancer.Objective To explore the value of circulating tumor cells(CTCs) in monitoring chemotherapeutic effect and predcitng prognosis in advanced NSCLC.Methods Participants were selected from Zhejiang Provincial People's Hospital from December 2015 to December 2016,including 50 cases of advanced NSCLC(lung cancer group),and 50 healthy examinees who volunteered to be controls(control group).The expression of CTCs in NSCLC patients before and after chemotherapy and in the control group were detected by immunomagnetic bead enrichment technique combined with fluorescence cytochemical staining.The follow-up ended by December 2018,during which the overall survival and progression-free survival of the lung cancer group were collected.The relationships of the expression of CTCs with clinical characteristics,therapeutic effect and prognosis of lung cancer group were analyzed.Results The prevalence of positive CTCs was 78.0%(39/50),and 0 in lung cancer group,and the control group,respectively,showing a significant difference(χ2=63.934,P<0.001).There were no significant differences in gender ratio,distributions of age,smoking prevalence,pathological type,differentiation degree and lymph node stage between NSCLC patients with positive CTCs and those with negative(P>0.05).CTCs positive patients showed higher rate of distant metastasis,and advanced clinical stage than CTCs negative patients(P<0.05).The prevalence of positive CTCs after one cycle of chemotherapy was lower than that before chemotherapy 〔36.0%(18/50) vs 78.0%(39/50),χ2=4.432,P=0.035〕.The evaluation of CTCs after 1-cycle chemotherapy was in good agreement with that assessed by RECIST 1.1 after 2-cycle chemotherapy(Kappa=0.528,P<0.001).18 cases were assessed with disease progression by imaging after chemotherapy,including 14 with positive CTCs,and 4 with negative,and the rate of distant metastasis between these two subgroups was significant(12/14 vs 0,χ2=10.286,P=0.001).The progression-free survival and overall survival of CTCs positive patients were both significantly shorter than those of CTCs negative patients(P<0.05).Conclusion It is feasible to detect CTCs by immunomagnetic bead enrichment combined with fluorescence cytochemical staining.The positive expression of CTCs is related to clinical stage and distant metastasis.CTCs are related to the chemotherapy effect and prognosis of advanced NSCLC,which can be used as a sensitive indicator for monitoring the curative effect of chemotherapy and predicting prognosis.

Key words: Carcinoma, non-small-cell lung;Neoplastic cells, circulating;Antineoplastic combined chemotherapy protocols;Treatment outcome;Prognosis