天津医药 ›› 2023, Vol. 51 ›› Issue (1): 69-73.doi: 10.11958/20220641

• 临床研究 • 上一篇    下一篇

网状蛋白1C水平与三阴性乳腺癌新辅助化疗疗效的相关性研究

张曼丽1(), 刘唯唯1, 王丽娟2, 李卫东3   

  1. 1 沧州市人民医院乳腺中心(邮编061000)
    2 沧州市人民医院手术室(邮编061000)
    3 沧州市人民医院甲乳外科(邮编061000)
  • 收稿日期:2022-04-26 修回日期:2022-05-13 出版日期:2023-01-15 发布日期:2023-01-17
  • 作者简介:张曼丽(1977),女,副主任医师,主要从事乳腺相关疾病治疗方面研究及科研工作。E-mail:mlzhang7777@163.com
  • 基金资助:
    河北省医学科学研究项目(20200285)

The correlation between the level of reticulin 1C in peripheral blood mononuclear cells and the efficacy of neoadjuvant chemotherapy for triple negative breast cancer

ZHANG Manli1(), LIU Weiwei1, WANG Lijuan2, LI Weidong3   

  1. 1 Breast Center,, Cangzhou People's Hospital, Cangzhou 061000, China
    2 Operating Room,, Cangzhou People's Hospital, Cangzhou 061000, China
    3 Thyroid and Breast Surgery, Cangzhou People's Hospital, Cangzhou 061000, China
  • Received:2022-04-26 Revised:2022-05-13 Published:2023-01-15 Online:2023-01-17

摘要:

目的 探究三阴性乳腺癌(TNBC)患者外周血单个核细胞中网状蛋白1C(RTN-1C)表达水平与新辅助化疗疗效的关系。方法 选取154例TNBC患者作为研究对象。收集所有受试者年龄、月经状态、病理类型、TNM分期、组织学分级和Ki-67表达>30%情况、肿瘤直径。抽取TNBC患者化疗前(T0)、化疗7 d(T1)、化疗14 d(T2)和化疗21 d(T3)的空腹肘正中静脉血,用Ficoll密度梯度离心法分离外周血中单个核细胞,蛋白质免疫印迹法检测单个核细胞中RTN-1C表达水平。受试者工作特征(ROC)曲线评价RTN-1C判断新辅助化疗疗效的效能,Logistic回归分析新辅助化疗疗效的风险因素,构建列线图回归模型预测新辅助化疗后病理学完全缓解,一致性指数(C-index)、校准曲线和决策曲线评估模型效能。结果 根据新辅助化疗疗效分为完全缓解组(n=47)和未完全缓解组(n=107)。在T1和T3完全缓解组的RTN-1C均低于未完全缓解组(P<0.05);T0、T1和T2的2组RTN-1C相对表达水平随时间进展均降低(P<0.01)。T3-RTN-1C判断新辅助化疗后病理学完全缓解的ROC曲线下面积(AUC)高于T0-RTN-1C、T1-RTN-1C和T2-RTN-1C(P<0.01)。Logistic回归分析结果显示T3-RTN-1C>0.91(OR=12.178,95%CI:4.796~30.924)、N1期或N2期(OR=2.180,95%CI:1.100~4.322)、组织学分级Ⅲ级(OR=3.609,95%CI:1.453~8.969)是新辅助化疗后病理学未完全缓解的独立危险因素(P<0.05)。模型A(N分期、组织学分级和T3-RTN-1C构建)的拟合曲线和理想曲线重合度较高,模型B(由N分期和组织学分级构建)的拟合曲线和理想曲线重合度较差。模型A、B的C-index分别为0.866和0.772。当阈值概率大于0.40时,模型A判断新辅助化疗后病理学完全缓解的净收益高于模型B。结论 N分期、组织学分级和T3-RTN-1C构建的模型对判断新辅助化疗后病理学完全缓解有较高的区分度、精准度和临床应用价值。

关键词: 三阴性乳腺癌, 化学疗法,辅助, 单核细胞, 网状蛋白1C, 病理学完全缓解

Abstract:

Objective To explore the relationship between the expression level of reticulin 1C (RTN-1C) in peripheral blood mononuclear cells of patients with triple negative breast cancer (TNBC) and the efficacy of neoadjuvant chemotherapy. Methods A total of 154 TNBC patients were selected as the study subjects. Patients were divided into the complete remission group (n=47) and the incomplete remission group (n=107) according to the efficacy of neoadjuvant chemotherapy. Data of age, menstrual status, type of pathology, TNM stage, histological grade, Ki-67 expression >30% and tumour diameter were collected from all subjects. Fasting elbow venous blood samples were collected from TNBC patients before chemotherapy (T0), 7 days after chemotherapy (T1), 14 days after chemotherapy (T2) and 21 days after chemotherapy (T3). Peripheral blood mononuclear cells were isolated by Ficoll density gradient centrifugation. The expression levels of RTN-1C in mononuclear cells were detected by Western blot assay. The receiver operating characteristic curve (ROC) was used to evaluate the efficacy of RTN-1C in determining neoadjuvant chemotherapy efficacy. Logistic regression was used to analyse risk factors for neoadjuvant chemotherapy efficacy. Nomogram regression models were constructed to predict complete remission of pathology after neoadjuvant chemotherapy, and consistency index (C-index), calibration curves and decision tree curves were used to assess model efficacy. Results The relative expression levels of RTN-1C were lower at T1 and T3 in the complete remission group than those in the incomplete remission group (P<0.05). The relative expression levels of RTN-1C at T0, T1 and T2 decreased over time in the 2 groups (P<0.01). The area under the ROC curve (AUC) of T3-RTN-1C was higher than T0-RTN-1C, T1-RTN-1C and T2-RTN-1C in judging pathological complete remission after neoadjuvant chemotherapy (P<0.01). Logistic regression analysis showed that T3-RTN-1C>0.91 (OR=12.178, 95%CI: 4.796-30.924), N1 or N2 (OR=2.180, 95%CI: 1.100-4.322) and histological grade Ⅲ (OR=3.609, 95%CI: 1.453-8.969) were independent risk factors for pathological incomplete remission after neoadjuvant chemotherapy (P<0.05). Model A (constructed by N stage, histological grade and T3-RTN-1C) had a high degree of coincidence between the fitting curve and the ideal curve, while model B (constructed by N stage and histological grade) had a poor degree of coincidence between the fitting curve and the ideal curve. The C-index of model A and model B were 0.866 and 0.772, respectively. When the threshold probability was higher than 0.40, the net benefit of model A in judging pathological complete response after neoadjuvant chemotherapy was higher than that of model B. Conclusion The model constructed by N stage, histological grade and T3-RTN-1C has a high degree of differentiation, accuracy and clinical application value in judging pathological complete response after neoadjuvant chemotherapy.

Key words: triple negative breast neoplasms, chemotherapy, adjuvant, monocytes, reticulin 1C, pathological complete remission

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