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[1]刘铠瑞,梁静静,王婧,等.SPTBN1对多倍体肿瘤巨细胞迁移行为的影响及其在乳腺癌中的临床意义[J].天津医科大学学报,2026,32(04):332-341.[doi:10.20135/j.issn.1006-8147.2026.04.0332]
 LIU Kairui,LIANG Jingjing,WANG Jing,et al.Effects of SPTBN1 on the migration of polyploid giant cancer cells and its clinical significance in breast cancer[J].Journal of Tianjin Medical University,2026,32(04):332-341.[doi:10.20135/j.issn.1006-8147.2026.04.0332]
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SPTBN1对多倍体肿瘤巨细胞迁移行为的影响及其在乳腺癌中的临床意义(PDF)

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

卷:
32卷
期数:
2026年04期
页码:
332-341
栏目:
论著
出版日期:
2026-07-10

文章信息/Info

Title:
Effects of SPTBN1 on the migration of polyploid giant cancer cells and its clinical significance in breast cancer
文章编号:
1006-8147(2026)04-0332-10
作者:
刘铠瑞1梁静静1王婧1王佳文12张诗武12
(1.天津医科大学人民医院临床学院, 天津 300070;2.天津市人民医院病理科, 天津 300121)
Author(s):
LIU Kairui1 LIANG Jingjing1 WANG Jing1 WANG Jiawen12 ZHANG Shiwu12
(1. Tianjin Union Medical Center,Tianjin Medical University,Tianjin 300070, China; 2. Department of Pathology, Tianjin Union Medical Center, Tianjin 300121, China)
关键词:
SPTBN1多倍体肿瘤巨细胞乳腺癌上皮-间充质转化
Keywords:
SPTBN1 polyploid giant cancer cells breast cancer epithelial-mesenchymal transition
分类号:
R737.9
DOI:
10.20135/j.issn.1006-8147.2026.04.0332
文献标志码:
A
摘要:
目的:探讨βII血影蛋白(SPTBN1)对多倍体肿瘤巨细胞(PGCCs)迁移生物学行为的影响,并分析其在乳腺癌特别是三阴性乳腺癌(TNBC)中的临床意义。方法:通过生物信息学数据库TCGA、GEPIA2、UALCAN和The Human Protein Atlas分析SPTBN1在乳腺癌及泛癌中的表达模式、临床相关性及其诊断与预后价值。体外实验采用正常培养的TNBC细胞系MDA-MB-231作为对照组,氯化钴诱导MDA-MB-231形成的PGCCs作为处理组,通过Western印迹实验和实时荧光定量逆转录PCR检测SPTBN1及上皮-间充质转化(EMT)相关分子,包括周期昼夜节律调节因子1(PER1)、A激酶锚定蛋白12(AKAP12)、基质金属蛋白酶17(MMP17)、SRY盒转录因子9(SOX9)、Snail家族转录抑制因子1(SNAIL)、上皮钙黏蛋白(E-cadherin)和神经钙黏蛋白(N-cadherin)的表达变化。通过伤口愈合实验,分别在对照组和PGCCs组中检测敲低与未敲低SPTBN1对细胞迁移能力的影响。结果:SPTBN1在乳腺癌组织中表达显著低于正常组织(P<0.001),尤其在TNBC中下调最为明显(P<0.001)。与对照组相比,PGCCs组SPTBN1表达降低(t=5.575,P<0.000 1),SNAIL、E-cadherin表达上调(t=12.030、7.463,均P<0.000 1)、N-cadherin上调(t=4.176,P<0.01)和表达MMP17(t=3.505,P<0.01),细胞迁移与克隆形成能力增强(t=5.872、4.958,均P<0.01)。生物信息学分析显示SPTBN1与PER1、AKAP12、SOX9表达呈正相关(r=0.483、0.207、0.209,均P<0.001)。敲低SPTBN1(t=3.493,P<0.05)后PGCCs的EMT表型进一步加剧,表现为SNAIL表达升高(t=8.013,P<0.000 1)、N-cadherin表达升高(t=3.982,P<0.01)以及E-cadherin表达下降(t=3.978,P<0.01),同时细胞迁移能力增强(t=4.091,P<0.05)。Kaplan-Meier生存分析表明SPTBN1高表达与较差的总生存期相关(HR=1.51,P=0.000 98),但可能为无复发生存期的保护因素(HR=0.75,P=0.000 14)。受试者工作特征曲线显示SPTBN1对乳腺癌具有高诊断价值(AUC>0.96)。结论:SPTBN1在乳腺癌中低表达,其下调与PGCCs的EMT表型及恶性行为增强相关。SPTBN1可作为潜在的乳腺癌诊断与预后生物标志物。
Abstract:
Objective: To investigate the effect of βII-spectrin (SPTBN1) on the migratory biological behavior of polyploid giant cancer cells (PGCCs) and to analyze its clinical significance in breast cancer, particularly in triple-negative breast cancer (TNBC). Methods: Bioinformatics databases TCGA, GEPIA2, UALCAN, and The Human Protein Atlas were utilized to analyze the expression patterns, clinical correlations, and diagnostic/prognostic value of SPTBN1 in breast cancer and pan-cancer. In vitro experiments used normally cultured TNBC cell line MDA-MB-231 as the control group, and PGCCs induced by cobalt chloride from MDA-MB-231 as the treatment group. Western blotting and quantitative real-time reverse transcription PCR were performed to detect the expression changes of SPTBN1 and epithelial-mesenchymal transition (EMT) related molecules, including period circadian regulator 1 (PER1), A-kinase anchoring protein 12 (AKAP12), matrix metalloproteinase 17 (MMP17), SRY-box transcription factor 9 (SOX9), snail family transcriptional repressor 1 (SNAIL), E-cadherin, and N-cadherin. The effect of SPTBN1 knockdown on cell migration ability was examined by wound healing assay in the control group and the PGCCs group, respectively. Results: The expression of SPTBN1 in breast cancer tissues was significantly lower than that in normal tissues (P<0.001), with the most pronounced downregulation observed in TNBC (P<0.001). Compared with the control group, the expression of SPTBN1 was further reduced in PGCCs (t=5.575, P<0.000 1), accompanied by EMT features including upregulated SNAIL and E-cadherin(t=12.030,7.463, both P<0.000 1), upregulated N-cadherin (t=4.176, P<0.01), and expression of MMP17 (t=3.505, P<0.01). Cell migration and colony-forming abilities were enhanced (t=5.872, 4.958, both P<0.01). Bioinformatics analysis revealed positive correlations between SPTBN1 and PER1, AKAP12, and SOX9 expression (r=0.483,P<0.001; r=0.207, P<0.001; r=0.209, P<0.001). After knocking down SPTBN1 (t=3.493, P<0.05), the EMT phenotype of PGCCs was further exacerbated, manifested as increased expression of SNAIL (t=8.013,P<0.000 1), increased expression of N-cadherin (t=3.982,P<0.01), and decreased expression of E-cadherin (t=3.978, P<0.01), while cell migration ability was enhanced (t=4.091,P<0.05). Kaplan-Meier survival analysis indicated that high SPTBN1 expression was associated with poorer overall survival (HR=1.51,P=0.000 98), but might serve as a protective factor for relapse-free survival (HR=0.75,P=0.000 14). Receiver operating characteristic curve analysis demonstrated a high diagnostic value for SPTBN1 in breast cancer (AUC>0.96). Conclusion: SPTBN1 is downregulated in breast cancer, and its decreased expression is associated with the EMT phenotype and enhanced malignant behavior of PGCCs. SPTBN1 may serve as a potential diagnostic and prognostic biomarker for breast cancer.

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备注/Memo

备注/Memo:
(2025-12-31收稿)
基金项目 天津市教委科研计划重点项目(2023YXZD04)
作者简介 刘铠瑞(2001-),男,硕士在读,研究方向:病理学与病理生理学;通信作者:张诗武,E-mail:zhangshiwu666@aliyun.com。
更新日期/Last Update: 2026-07-15