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[1]谭魏,冯玉梅.FOXQ1调节luminal乳腺癌细胞增殖的研究[J].天津医科大学学报,2026,32(01):32-38.[doi:10.20135/j.issn.1006-8147.2026.01.0032]
 TAN Wei,FENG Yumei.Study on the regulation of FOXQ1 in cell proliferation in luminal breast cancer[J].Journal of Tianjin Medical University,2026,32(01):32-38.[doi:10.20135/j.issn.1006-8147.2026.01.0032]
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FOXQ1调节luminal乳腺癌细胞增殖的研究(PDF)

《天津医科大学学报》[ISSN:1006-8147/CN:12-1259/R]

卷:
32卷
期数:
2026年01期
页码:
32-38
栏目:
肿瘤疾病专题
出版日期:
2026-01-20

文章信息/Info

Title:
Study on the regulation of FOXQ1 in cell proliferation in luminal breast cancer
文章编号:
1006-8147(2026)01-0032-07
作者:
谭魏冯玉梅
(天津医科大学肿瘤医院肿瘤研究所生物化学与分子生物学研究室,国家恶性肿瘤临床医学研究中心,天津市恶性肿瘤临床医学研究中心,乳腺癌防治教育部重点实验室,天津300060)
Author(s):
TAN Wei FENG Yumei
(Department of Biochemistry and Molecular Biology, Cancer Institute and Hospital, Tianjin Medical University; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education; Tianjin′s Clinical Research Center for Cancer; National Clinical Research Center for Cancer, Tianjin 300060, China)
关键词:
luminal乳腺癌FOXQ1Wnt/β-catenin信号通路增殖CDK4/6抑制剂
Keywords:
luminal breast cancer FOXQ1 Wnt/β-catenin signaling pathwayproliferation CDK4/6 inhibitors
分类号:
R737.9
DOI:
10.20135/j.issn.1006-8147.2026.01.0032
文献标志码:
A
摘要:
目的:探究FOXQ1调节luminal乳腺癌(LumBC)细胞增殖的作用及机制。方法:以LumBC细胞MCF-7和T-47D为研究对象,慢病毒感染构建FOXQ1稳定过表达的LumBC细胞;CCK-8和克隆形成实验检测FOXQ1对细胞增殖的影响;免疫荧光和蛋白免疫印迹检测FOXQ1对β-catenin核易位的影响;ChIP-seq筛选FOXQ1的靶基因;RT-qPCR和蛋白免疫印迹检测FOXQ1对Wnt/β-catenin信号通路靶基因的调控作用;基于METABRIC数据库分析FOXQ1与CDK4/6抑制剂耐药相关基因表达的相关性;CCK-8测定半抑制浓度(IC50)和克隆形成实验检测FOXQ1过表达细胞对CDK4/6抑制剂敏感性的影响。结果:FOXQ1过表达的MCF-7和T-47D细胞生长加快(t=8.262、8.192,均P<0.001)、细胞克隆形成增多(t=7.476,P<0.01;t=9.277,P<0.001);FOXQ1过表达促进LumBC细胞的β-catenin核易位;FOXQ1在WNT2基因启动子上富集并促进其表达(t=6.063,P<0.01;t=9.716,P<0.001);FOXQ1促进Wnt/β-catenin信号通路下游基因MYC(t=5.729、7.228,均P<0.01)和CCND1(t=5.484,P<0.01;t=3.601,P<0.05)mRNA和蛋白的表达;FOXQ1与CCNE1(r=0.271,P<0.000 1)、CDK2(r=0.13,P<0.000 1)、CDK4(r=0.187,P<0.000 1)和CDK6(r=0.382,P<0.000 1)表达均呈正相关;FOXQ1过表达细胞CDK4/6抑制剂的IC50上调,克隆形成能力增强(t=14.85、5.871,均P<0.001)。结论:在LumBC细胞中,FOXQ1上调WNT2,激活Wnt/β-catenin信号通路,并上调MYC和CCND1表达,从而促进乳腺癌细胞的增殖并降低对CDK4/6抑制剂的敏感性。
Abstract:
Objective: To investigate the effect of FOXQ1 on the proliferation of luminal breast cancer (LumBC) cells and its regulatory mechanism. Methods: LumBC cells MCF-7 and T-47D were used as research subjects. FOXQ1 stably overexpression LumBC cells were constructed by lentivirus infection. CCK-8 and colony formation assays were used to detect the effect of FOXQ1 on cell proliferation. Immunofluorescence and Western blotting were used to detect the effect of FOXQ1 on β-catenin nuclear translocation. ChIP-seq was used to screen the target genes of FOXQ1. RT-qPCR and Western blotting was used to detect the regulatory effect of FOXQ1 on the target genes of the Wnt/β-catenin signaling pathway. The correlation between FOXQ1 and the expression of CDK4/6 inhibitor resistance-related genes was analyzed based on the METABRIC database. CCK-8 was used to determine the half-maximal inhibitory concentration (IC50), and colony formation assays were used to detect the effect of FOXQ1 overexpression on the sensitivity of cells to CDK4/6 inhibitors. Results: FOXQ1 overexpression in MCF-7 and T-47D cells accelerated cell growth (t=8.262,8.192, both P<0.001) and increased cell colony formation (t=7.476, P<0.01;t=9.277, P<0.001). FOXQ1 overexpression promoted β-catenin nuclear translocation in LumBC cells. FOXQ1 was enriched on the promoter of the WNT2 gene and promoted its expression (t=6.063, P<0.01; t=9.716, P<0.001). FOXQ1 promoted the mRNA and protein expression of downstream genes MYC (t=5.729, 7.228, both P<0.05) and CCND1(t=5.484, P<0.01; t=3.601, P<0.05) of the Wnt/β-catenin signaling pathway. FOXQ1 was positively correlated with the expression of CCNE1(r=0.271, P<0.000 1)、CDK2 (r=0.13, P<0.000 1)、CDK4 (r=0.187, P<0.000 1) and CDK6(r=0.382,P<0.000 1).The IC50 of CDK4/6 inhibitors in FOXQ1 overexpression cells was increased, and the colony formation ability was enhanced (t=14.85,5.871, both P<0.001). Conclusion: In LumBC cells, FOXQ1 upregulates WNT2 to activate the Wnt/β-catenin signaling pathway and upregulate the expression of MYC and CCND1, thereby promoting the proliferation of breast cancer cells and reducing the sensitivity to CDK4/6 inhibitors.

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备注/Memo

备注/Memo:
基金项目:天津市医学重点学科(专科)建设项目(TJYXZDXK-009A)
作者简介:谭魏(2001-),男,硕士在读,研究方向:肿瘤分子生物学;
通信作者:冯玉梅,E-mail:ymfeng@tmu.edu.cn。
更新日期/Last Update: 2026-01-15