天津医药 ›› 2023, Vol. 51 ›› Issue (11): 1158-1163.doi: 10.11958/20230438

• 细胞与分子生物学 • 上一篇    下一篇

肿瘤相关巨噬细胞通过激活IGF-1R信号通路诱导三阴性乳腺癌细胞对白蛋白紫杉醇耐药的研究

刘淑娟1,2(), 刘梦莹1, 苏乌云3, 窦佳3, 王薇3,△()   

  1. 1.内蒙古医科大学第一临床医学院(邮编010059)
    2.内蒙古阿荣旗人民医院内科
    3.内蒙古医科大学附属医院肿瘤内科
  • 收稿日期:2023-03-27 修回日期:2023-05-23 出版日期:2023-11-15 发布日期:2023-11-07
  • 通讯作者: △E-mail:656225284@qq.com
  • 作者简介:刘淑娟(1984),女,硕士在读,主要从事肿瘤诊治及机制方面研究。E-mail:33562569@qq.com
  • 基金资助:
    北京科创医学发展基金会项目(KC2021-JX-0044-9);内蒙古自治区卫生健康科技计划项目(202202191)

Investigation on the determination of tumor-associated macrophages inducing the drug resistance of albumin-bound paclitaxel in triple-negative breast cancer cells by activating IGF-1R signaling pathway

LIU Shujuan1,2(), LIU Mengying1, SU Wuyun3, DOU Jia3, WANG Wei3,△()   

  1. 1. The First Clinical College of Inner Mongolia Medical University, Hohhot 010059, China
    2. Department of Internal Medicine, Inner Mongolia A Rong Qi People's Hospital
    3. Department of Oncology, Affiliated Hospital of Inner Mongolia Medical University
  • Received:2023-03-27 Revised:2023-05-23 Published:2023-11-15 Online:2023-11-07
  • Contact: △E-mail:656225284@qq.com

摘要:

目的 探讨肿瘤相关巨噬细胞(TAM)对三阴性乳腺癌(TNBC)细胞白蛋白紫杉醇(Nab-PTX)化疗敏感性的影响及作用机制。方法 构建并鉴定TAM模型;通过Transwell小室共培养法建立TAM与TNBC细胞系MDA-MB-231细胞共培养模式,分为对照组(MDA-MB-231细胞及空白小室)、Nab-PTX组(MDA-MB-231细胞、空白小室及0.5 nmol/L Nab-PTX)、TAM组(MDA-MB-231细胞、含M2型巨噬细胞的小室)、TAM+Nab-PTX组(MDA-MB-231细胞、含M2型巨噬细胞的小室及0.5 nmol/L Nab-PTX)、胰岛素样生长因子1受体(IGF-1R)抑制剂组(MDA-MB-231细胞、含M2型巨噬细胞的小室、0.5 nmol/L Nab-PTX及4 nmol/L IGF-1R抑制剂Linsitinib);CCK-8法检测各组细胞增殖情况;流式细胞术检测细胞凋亡;实时荧光定量PCR(qPCR)检测多药耐药蛋白(MDR)1和胱天蛋白酶(Caspase)-3 mRNA水平;Western blot检测IGF-1R信号通路关键蛋白表达。结果 THP-1细胞经诱导分化为M2型巨噬细胞;与Nab-PTX组相比,TAM+Nab-PTX组细胞增殖水平升高,凋亡率降低(P<0.01),MDR1 mRNA表达升高,Caspase-3 mRNA表达降低(P<0.05),IGF-1R信号通路关键蛋白激活(P<0.01);与TAM+Nab-PTX组相比,IGF-1R抑制剂组细胞增殖水平降低,凋亡率升高,MDR1 mRNA表达降低,Caspase-3 mRNA的表达增高,IGF-1R信号通路关键蛋白的表达降低(P<0.01)。结论 TAM可能通过激活IGF-1R信号通路诱导TNBC细胞对Nab-PTX耐药。

关键词: 肿瘤相关巨噬细胞, 三阴性乳腺癌, 白蛋白紫杉醇, 药物耐受性, 受体, IGF1型

Abstract:

Objective To investigate the effect of tumor-associated macrophages (TAM) on the chemosensitivity of triple-negative breast cancer (TNBC) cells to albumin-bound paclitaxel (Nab-PTX). Methods TAM model was constructed and identified. TNBC cell line MDA-MB-231 was established by Transwell cell co-culture method. They were divided into the control group (MDA-MB-231 cells and blank chamber), the Nab-PTX group (MDA-MB-231 cells, blank chamber and 0.5 nmol/L Nab-PTX), the TAM group (MDA-MB-231 cells, containing M2-type macrophages), the TAM+Nab-PTX group (MDA-MB-231 cells, cells containing M2-type macrophages and 0.5 nmol/L Nab-PTX) and the insulin-like growth factor 1 receptor (IGF-1R) inhibitor group (MD-MB-231 cells, macrophage compartment containing M2-type, 0.5 nmol/L Nab-PTX and 4 nmol/L IGF-1R inhibitor Linsitinib). The cell survival rate of each group was determined by CCK-8 method. Flow cytometry was used to detect cell apoptosis. The mRNA levels of multidrug resistant protein (MDR) 1 and Caspase-3 were detected by real-time quantitative PCR (qPCR). The key proteins of IGF-1R signaling pathway were detected by Western blot assay. Results THP-1 cells were induced to differentiate into M2 macrophages. Compared with the Nab-PTX group, the cell proliferation rate was increased and apoptosis rate was decreased in the TAM+Nab-PTX group (P<0.01). The mRNA expression of MDR1was increased and Caspase-3 mRNA was decreased (P<0.05). The key protein of IGF-1R signaling pathway was activated (P<0.01). Compared with the TAM+Nab-PTX group, the proliferation rate was decreased and apoptosis rate of cells was increased in the IGF-1R inhibitor group. The mRNA expression of MDR1 was decreased, the mRNA expression of Caspase3 was increased, and the expression of key proteins in IGF-1R signaling pathway was decreased (P<0.01). Conclusion TAM may induce resistance of TNBC cells to Nab-PTX by activating IGF-1R signaling pathway.

Key words: tumor-associated macrophages, triple negative breast neoplasms, albumin-bound paclitaxel, drug tolerance, receptor, IGF type 1

中图分类号: