目的:探讨GATA3与FOXA1在luminal亚型乳腺癌细胞中的相互作用。方法:基于cBioportal For Cancer Genomics公共数据库中乳腺癌临床病例数据集,分析luminal A、luminal B和basal-like亚型乳腺癌组织中GATA3与FOXA1mRNA表达水平的相关性;...目的:探讨GATA3与FOXA1在luminal亚型乳腺癌细胞中的相互作用。方法:基于cBioportal For Cancer Genomics公共数据库中乳腺癌临床病例数据集,分析luminal A、luminal B和basal-like亚型乳腺癌组织中GATA3与FOXA1mRNA表达水平的相关性;利用蛋白-蛋白相互作用数据库STRING和分析工具Cytoscape预测GATA3与FOXA1的相互作用。以luminal亚型的MCF-7和T-47D乳腺癌细胞以及basal-like亚型的MDA-MB-231和SUM-149PT乳腺癌细胞为研究对象,采用RT-qPCR和Western印迹检测GATA3和FOXA1的mRNA和蛋白表达水平;细胞免疫荧光检测GATA3和FOXA1的细胞定位;蛋白质免疫共沉淀验证GATA3与FOXA1之间的相互作用。结果:临床病例数据分析显示GATA3与FOXA1在luminal A、luminal B和basal-like亚型乳腺癌组织中mRNA的表达均呈正相关(r=0.4047、0.4761、0.5876,均P<0.0001)。蛋白质相互作用预测显示GATA3与FOXA1存在潜在的相互作用关系。Luminal乳腺癌细胞中GATA3和FOXA1的mRNA(t=80.95、79.73、33.84、33.60,均P<0.0001;t=15.24、5.21、14.95、14.93,均P<0.001)和蛋白(t=29.63、28.48、36.60、35.60,均P<0.0001;t=34.06、35.30、75.01、74.32,均P<0.0001)表达水平显著高于basal-like细胞。GATA3与FOXA1在MCF-7和T-47D细胞核中共定位。GATA3与FOXA1存在蛋白相互作用。结论:GATA3与FOXA1可能通过相互作用维持luminal亚型乳腺癌表型稳态,抑制肿瘤恶性进展。展开更多
Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with differen...Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with different cancers, including breast cancers. Very little information is available on the effect of dysregulation of miRNA-mediated regulation on luminal B breast cancer. This study was aimed at comprehending the regulation of gene expression through miRNA in luminal B breast cancers by comprehensive analysis of miRNA and mRNA expression data together. Negatively regulated miRNA-target gene pairs were identified, and the target genes were functionally enriched to identify critical pathways associated with luminal B breast cancer. Further, the prognostic significance of these miRNAs and target gene pairs was assessed to identify genes with prognostic value in luminal B breast cancer. A total of 266 differentially expressed miRNAs and 164 dysregulated miRNA-target gene pairs were identified. Four genes, including SRP9, DSN1, RACGAP1, and SLC10A6, and one miRNA, hsa-mir-421, showed significant influence on the prognosis of patients with luminal B breast cancer. Through additional experimental examination of these findings, a deeper comprehension of miRNA-based post-transcriptional regulation in luminal B breast tumors will be possible.展开更多
乳腺癌是女性常见恶性肿瘤,男性相对少见[1]。男性乳腺癌(male breast carcinoma,MBC)在所有乳腺癌患者占比<1%,在男性所有癌症中占比<1%,但发病率呈缓慢上升趋势[2],临床上以中老年患者多见[3]。MBC发病率较低,发现时往往分期较...乳腺癌是女性常见恶性肿瘤,男性相对少见[1]。男性乳腺癌(male breast carcinoma,MBC)在所有乳腺癌患者占比<1%,在男性所有癌症中占比<1%,但发病率呈缓慢上升趋势[2],临床上以中老年患者多见[3]。MBC发病率较低,发现时往往分期较晚,恶性程度较高[4],缺乏特定治疗手段,预后较差[5]。临床上对于MBC的治疗建议通常参考女性乳腺癌的临床试验结果。本文报告1例Luminal B型MBC的诊治,并复习相关文献,为临床诊疗MBC提供参考。展开更多
Background:Luminal A breast cancer has the best prognosis of all malignant breast cancer types.In clinical practice,some patients with luminal A breast cancer present with small tumors(usually<20 mm)but with lymph ...Background:Luminal A breast cancer has the best prognosis of all malignant breast cancer types.In clinical practice,some patients with luminal A breast cancer present with small tumors(usually<20 mm)but with lymph node metastases or even distant organ metastasis.Owing to their insensitivity to chemotherapy and the lack of conclusive clinical evidence,there is a significant gap in research on luminal A breast cancer with high invasiveness.This study aimed to identify genes that drive the invasiveness of luminal A breast cancer and explore the underlying mechanisms.Methods:In this study,we first utilized bioinformatics techniques to analyze differentially expressed mRNAs and enrich common functional pathways to identify the target gene DDHD domain containing 2(DDHD2).We then evaluated the association between DDHD2 expression and patient prognosis,genetic material changes,and transcriptional,translational,and immune responses in luminal A breast cancer.We also conducted experiments at the molecular and cellular levels to validate these biochemical mechanisms.Results:The expression of DDHD2 varied between patients with low-grade luminal A breast cancer with and without lymph node metastases.Our findings demonstrated that DDHD2 exerted carcinogenic effects through various pathways by altering cell adhesion and migration,regulating cell proliferation and apoptosis cycles,and suppressing immune responses.Moreover,a pathway through which DDHD2 inhibited immunity was preliminarily verified.Conclusions:The results revealed a novel role for DDHD2 in promoting the malignant transformation and invasiveness of luminal A breast cancer.Considering its effects on the tumor microenvironment and tumor-infiltrating immune cells in the epithelial-mesenchymal transition,DDHD2 is proposed as a reliable direction for future immunotherapy and a potential target in luminal A breast cancer immune resistance.展开更多
文摘目的:探讨GATA3与FOXA1在luminal亚型乳腺癌细胞中的相互作用。方法:基于cBioportal For Cancer Genomics公共数据库中乳腺癌临床病例数据集,分析luminal A、luminal B和basal-like亚型乳腺癌组织中GATA3与FOXA1mRNA表达水平的相关性;利用蛋白-蛋白相互作用数据库STRING和分析工具Cytoscape预测GATA3与FOXA1的相互作用。以luminal亚型的MCF-7和T-47D乳腺癌细胞以及basal-like亚型的MDA-MB-231和SUM-149PT乳腺癌细胞为研究对象,采用RT-qPCR和Western印迹检测GATA3和FOXA1的mRNA和蛋白表达水平;细胞免疫荧光检测GATA3和FOXA1的细胞定位;蛋白质免疫共沉淀验证GATA3与FOXA1之间的相互作用。结果:临床病例数据分析显示GATA3与FOXA1在luminal A、luminal B和basal-like亚型乳腺癌组织中mRNA的表达均呈正相关(r=0.4047、0.4761、0.5876,均P<0.0001)。蛋白质相互作用预测显示GATA3与FOXA1存在潜在的相互作用关系。Luminal乳腺癌细胞中GATA3和FOXA1的mRNA(t=80.95、79.73、33.84、33.60,均P<0.0001;t=15.24、5.21、14.95、14.93,均P<0.001)和蛋白(t=29.63、28.48、36.60、35.60,均P<0.0001;t=34.06、35.30、75.01、74.32,均P<0.0001)表达水平显著高于basal-like细胞。GATA3与FOXA1在MCF-7和T-47D细胞核中共定位。GATA3与FOXA1存在蛋白相互作用。结论:GATA3与FOXA1可能通过相互作用维持luminal亚型乳腺癌表型稳态,抑制肿瘤恶性进展。
文摘Dysregulation of post-transcriptional regulation of gene expression has been found to influence various human disorders. Aberrant miRNA-based regulation of gene expression has been found to be associated with different cancers, including breast cancers. Very little information is available on the effect of dysregulation of miRNA-mediated regulation on luminal B breast cancer. This study was aimed at comprehending the regulation of gene expression through miRNA in luminal B breast cancers by comprehensive analysis of miRNA and mRNA expression data together. Negatively regulated miRNA-target gene pairs were identified, and the target genes were functionally enriched to identify critical pathways associated with luminal B breast cancer. Further, the prognostic significance of these miRNAs and target gene pairs was assessed to identify genes with prognostic value in luminal B breast cancer. A total of 266 differentially expressed miRNAs and 164 dysregulated miRNA-target gene pairs were identified. Four genes, including SRP9, DSN1, RACGAP1, and SLC10A6, and one miRNA, hsa-mir-421, showed significant influence on the prognosis of patients with luminal B breast cancer. Through additional experimental examination of these findings, a deeper comprehension of miRNA-based post-transcriptional regulation in luminal B breast tumors will be possible.
文摘乳腺癌是女性常见恶性肿瘤,男性相对少见[1]。男性乳腺癌(male breast carcinoma,MBC)在所有乳腺癌患者占比<1%,在男性所有癌症中占比<1%,但发病率呈缓慢上升趋势[2],临床上以中老年患者多见[3]。MBC发病率较低,发现时往往分期较晚,恶性程度较高[4],缺乏特定治疗手段,预后较差[5]。临床上对于MBC的治疗建议通常参考女性乳腺癌的临床试验结果。本文报告1例Luminal B型MBC的诊治,并复习相关文献,为临床诊疗MBC提供参考。
基金funded by the National Natural Science Foundation of China(no.82103671).
文摘Background:Luminal A breast cancer has the best prognosis of all malignant breast cancer types.In clinical practice,some patients with luminal A breast cancer present with small tumors(usually<20 mm)but with lymph node metastases or even distant organ metastasis.Owing to their insensitivity to chemotherapy and the lack of conclusive clinical evidence,there is a significant gap in research on luminal A breast cancer with high invasiveness.This study aimed to identify genes that drive the invasiveness of luminal A breast cancer and explore the underlying mechanisms.Methods:In this study,we first utilized bioinformatics techniques to analyze differentially expressed mRNAs and enrich common functional pathways to identify the target gene DDHD domain containing 2(DDHD2).We then evaluated the association between DDHD2 expression and patient prognosis,genetic material changes,and transcriptional,translational,and immune responses in luminal A breast cancer.We also conducted experiments at the molecular and cellular levels to validate these biochemical mechanisms.Results:The expression of DDHD2 varied between patients with low-grade luminal A breast cancer with and without lymph node metastases.Our findings demonstrated that DDHD2 exerted carcinogenic effects through various pathways by altering cell adhesion and migration,regulating cell proliferation and apoptosis cycles,and suppressing immune responses.Moreover,a pathway through which DDHD2 inhibited immunity was preliminarily verified.Conclusions:The results revealed a novel role for DDHD2 in promoting the malignant transformation and invasiveness of luminal A breast cancer.Considering its effects on the tumor microenvironment and tumor-infiltrating immune cells in the epithelial-mesenchymal transition,DDHD2 is proposed as a reliable direction for future immunotherapy and a potential target in luminal A breast cancer immune resistance.
