BC, breast cancer

BC,乳腺癌
  • 文章类型: Journal Article
    未经证实:舌头图像(颜色,舌头的大小和形状以及颜色,舌苔的厚度和水分含量),根据中医理论反映全身的健康状况,已经在中国广泛使用了数千年。在这里,我们调查了舌象和舌苔微生物组在胃癌(GC)诊断中的价值。
    UNASSIGNED:从2020年5月到2021年1月,我们同时收集了中国328名GC患者(所有新诊断为GC)和304名非胃癌(NGC)参与者的舌象和舌苔样本,和16SrDNA用于表征舌苔样品的微生物组。然后,建立人工智能(AI)深度学习模型,评估舌象和舌苔微生物组在GC诊断中的价值。考虑到舌成像作为诊断工具更方便、更经济,我们于2020年5月至2022年3月在中国进一步开展了一项前瞻性多中心临床研究,招募了来自中国10个中心的937例GC患者和1911例NGC患者,以进一步评估舌象在GC诊断中的作用.此外,我们在另一个独立的外部验证队列中验证了该方法,该队列包括来自7个中心的294例GC患者和521例NGC患者.这项研究在ClinicalTrials.gov注册,NCT01090362。
    未经评估:第一次,我们发现舌象和舌苔微生物组可以作为GC诊断的工具,基于舌象的诊断模型的曲线下面积(AUC)值为0.89。基于舌苔微生物组的模型的AUC值使用属数据达到0.94,使用物种数据达到0.95。前瞻性多中心临床研究结果表明,三种基于舌象的GCs模型的AUC值在内部验证中达到0.88-0.92,在独立外部验证中达到0.83-0.88,显着优于八种血液生物标志物的组合。
    UNASSIGNED:我们的结果表明,舌头图像可作为GC诊断的稳定方法,并且显着优于常规血液生物标志物。我们开发的三种基于舌图像的AI深度学习诊断模型可用于充分区分GC患者和NGC参与者,甚至早期GC和癌前病变,如萎缩性胃炎(AG)。
    未经批准:国家重点研发计划(2021YFA0910100),浙江省中医药科技计划方案(2018ZY006),浙江省医学科技项目(2022KY114,WKJ-ZJ-2104),浙江省上消化道肿瘤研究中心(JBZX-202006),浙江省自然科学基金(HDMY22H160008),浙江省科技项目(2019C03049),国家自然科学基金(82074245,81973634,82204828),中国博士后科学基金(2022M713203)。
    UNASSIGNED: Tongue images (the colour, size and shape of the tongue and the colour, thickness and moisture content of the tongue coating), reflecting the health state of the whole body according to the theory of traditional Chinese medicine (TCM), have been widely used in China for thousands of years. Herein, we investigated the value of tongue images and the tongue coating microbiome in the diagnosis of gastric cancer (GC).
    UNASSIGNED: From May 2020 to January 2021, we simultaneously collected tongue images and tongue coating samples from 328 patients with GC (all newly diagnosed with GC) and 304 non-gastric cancer (NGC) participants in China, and 16 S rDNA was used to characterize the microbiome of the tongue coating samples. Then, artificial intelligence (AI) deep learning models were established to evaluate the value of tongue images and the tongue coating microbiome in the diagnosis of GC. Considering that tongue imaging is more convenient and economical as a diagnostic tool, we further conducted a prospective multicentre clinical study from May 2020 to March 2022 in China and recruited 937 patients with GC and 1911 participants with NGC from 10 centres across China to further evaluate the role of tongue images in the diagnosis of GC. Moreover, we verified this approach in another independent external validation cohort that included 294 patients with GC and 521 participants with NGC from 7 centres. This study is registered at ClinicalTrials.gov, NCT01090362.
    UNASSIGNED: For the first time, we found that both tongue images and the tongue coating microbiome can be used as tools for the diagnosis of GC, and the area under the curve (AUC) value of the tongue image-based diagnostic model was 0.89. The AUC values of the tongue coating microbiome-based model reached 0.94 using genus data and 0.95 using species data. The results of the prospective multicentre clinical study showed that the AUC values of the three tongue image-based models for GCs reached 0.88-0.92 in the internal verification and 0.83-0.88 in the independent external verification, which were significantly superior to the combination of eight blood biomarkers.
    UNASSIGNED: Our results suggest that tongue images can be used as a stable method for GC diagnosis and are significantly superior to conventional blood biomarkers. The three kinds of tongue image-based AI deep learning diagnostic models that we developed can be used to adequately distinguish patients with GC from participants with NGC, even early GC and precancerous lesions, such as atrophic gastritis (AG).
    UNASSIGNED: The National Key R&D Program of China (2021YFA0910100), Program of Zhejiang Provincial TCM Sci-tech Plan (2018ZY006), Medical Science and Technology Project of Zhejiang Province (2022KY114, WKJ-ZJ-2104), Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer (JBZX-202006), Natural Science Foundation of Zhejiang Province (HDMY22H160008), Science and Technology Projects of Zhejiang Province (2019C03049), National Natural Science Foundation of China (82074245, 81973634, 82204828), and Chinese Postdoctoral Science Foundation (2022M713203).
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  • 文章类型: Journal Article
    RNA中的转录后修饰调节其生物学行为和功能。N1-甲基腺苷(m1A),由作者动态调节,橡皮擦和阅读器,已被发现是tRNA的可逆修饰,mRNArRNA和长链非编码RNA(lncRNA)。m1A修饰对RNA加工有影响,目标的结构和功能。越来越多的研究揭示了m1A修饰及其调节因子在肿瘤发生中的关键作用。由于m1A与癌症发展之间的正相关性,针对m1A修饰和与m1A相关的调节因子一直受到关注。在这次审查中,我们总结了目前对RNA中m1A的理解,涵盖了癌症生物学中m1A修饰的调制,以及靶向m1A修饰作为癌症诊断和治疗的潜在靶标的可能性。
    Post-transcriptional modifications in RNAs regulate their biological behaviors and functions. N1-methyladenosine (m1A), which is dynamically regulated by writers, erasers and readers, has been found as a reversible modification in tRNA, mRNA, rRNA and long non-coding RNA (lncRNA). m1A modification has impacts on the RNA processing, structure and functions of targets. Increasing studies reveal the critical roles of m1A modification and its regulators in tumorigenesis. Due to the positive relevance between m1A and cancer development, targeting m1A modification and m1A-related regulators has been of attention. In this review, we summarized the current understanding of m1A in RNAs, covering the modulation of m1A modification in cancer biology, as well as the possibility of targeting m1A modification as a potential target for cancer diagnosis and therapy.
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  • 文章类型: Journal Article
    合成致死性(SL)是癌症中新兴的治疗范例。我们通过文献挖掘和RAS突变高通量筛选(HTS)数据引入了一种不同的方法来对SL基因对进行优先级排序。我们匹配了来自文本挖掘的必需基因和来自COSMIC和CCLEHTS数据集的突变基因,以构建SL基因对的预测模型。CCLE基因表达数据用于利用Spearman相关系数和文献挖掘来丰富必需突变SL基因对。总的来说,提取了223个基本触发项并进行了排名。必需基因评分的阈值(Sg)设定为10。我们鉴定了结肠癌SL预测模型所必需的586个基因。在我们的模型中鉴定出七个必需的RAS-突变SL基因对,包括CD82-KRAS/NRAS,PEBP1-NRAS,MT-CO2-HRAS,IFI27-NRAS/KRAS,和SUMO1-HRAS基因对。使用RAS突变HTS数据验证,我们发现了两个潜在的SL基因对,包括DLD-1结肠癌细胞系中的CD82(必需基因)-KRAS(突变基因)对和CD82-NRAS对(Spearman的相关p值分别为0.004786和0.00249)。根据PubChem的进一步注释,我们观察到毛地黄皂苷靶向包含CD82的复合物,尤其是在KRAS突变的HCT116癌细胞中.此外,我们通过实验证明,CD82在KRAS突变型结直肠癌中表现出选择性易损性.我们使用文献挖掘和HTS数据来确定RAS突变结肠癌SL靶标的候选物。
    Synthetic lethality (SL) is an emerging therapeutic paradigm in cancer. We introduced a different approach to prioritize SL gene pairs through literature mining and RAS-mutant high-throughput screening (HTS) data. We matched essential genes from text-mining and mutant genes from the COSMIC and CCLE HTS datasets to build a prediction model of SL gene pairs. CCLE gene expression data were used to enrich the essential-mutant SL gene pairs using Spearman\'s correlation coefficient and literature mining. In total, 223 essential trigger terms were extracted and ranked. The threshold of the essential gene score ( S g ) was set to 10. We identified 586 genes essential for the SL prediction model of colon cancer. Seven essential RAS-mutant SL gene pairs were identified in our model, including CD82-KRAS/NRAS, PEBP1-NRAS, MT-CO2-HRAS, IFI27-NRAS/KRAS, and SUMO1-HRAS gene pairs. Using RAS-mutant HTS data validation, we identified two potential SL gene pairs, including the CD82 (essential gene)-KRAS (mutant gene) pair and CD82-NRAS pair in the DLD-1 colon cancer cell line (Spearman\'s correlation p-values = 0.004786 and 0.00249, respectively). Based on further annotations by PubChem, we observed that digitonin targeted the complex comprising CD82, especially in KRAS-mutated HCT116 cancer cells. Moreover, we experimentally demonstrated that CD82 exhibited selective vulnerability in KRAS-mutant colorectal cancer. We used literature mining and HTS data to identify candidates for SL targets for RAS-mutant colon cancer.
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  • 文章类型: Journal Article
    乳腺癌占全球女性癌症相关死亡人数的近一半。然而,导致肿瘤发展和进展的分子机制仍然知之甚少,需要确定与原发性和转移性乳腺癌进展和预后相关的候选基因.在这项研究中,通过一种新的生物信息学方法探索了与原发性和转移性乳腺癌预后相关的候选基因。评估原发性和转移性乳腺癌组织以及邻近的正常乳腺组织以鉴定原发性和转移性乳腺癌的生物标志物特征。使用mRNASeq平台下载癌症基因组图谱-乳腺浸润性癌(TCGA-BRCA)数据集(ID:HS-01619)。使用基因估计器8.3.2分析样品组之间的TCGA-BRCA基因表达谱,并鉴定各组中的差异表达基因(DEGs)。对于每个小组,基因本体论和京都百科全书的基因和基因组途径富集分析用于确定DEGs的功能。构建蛋白质-蛋白质相互作用网络以鉴定具有最高相互作用程度的顶级hub基因。此外,使用人类蛋白质图谱,根据总生存期和免疫组织化学方法验证了顶级hub基因.在确定的前20个中心基因中,四个(KRT14、KIT、RAD51和TTK)被认为是基于总生存期的预后危险因素。在乳腺癌患者中,KRT14和KIT表达水平上调,而RAD51和TTK表达水平下调。四个拟议的候选hub基因可能有助于进一步理解将原发性乳腺肿瘤与转移性肿瘤区分开来的分子变化,并有助于开发新的疗法。此外,基于它们的表达与患者总生存期之间的强相关性,它们可以作为有效的预后风险标志物.
    Breast cancer accounts for nearly half of all cancer-related deaths in women worldwide. However, the molecular mechanisms that lead to tumour development and progression remain poorly understood and there is a need to identify candidate genes associated with primary and metastatic breast cancer progression and prognosis. In this study, candidate genes associated with prognosis of primary and metastatic breast cancer were explored through a novel bioinformatics approach. Primary and metastatic breast cancer tissues and adjacent normal breast tissues were evaluated to identify biomarkers characteristic of primary and metastatic breast cancer. The Cancer Genome Atlas-breast invasive carcinoma (TCGA-BRCA) dataset (ID: HS-01619) was downloaded using the mRNASeq platform. Genevestigator 8.3.2 was used to analyse TCGA-BRCA gene expression profiles between the sample groups and identify the differentially-expressed genes (DEGs) in each group. For each group, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were used to determine the function of DEGs. Networks of protein-protein interactions were constructed to identify the top hub genes with the highest degree of interaction. Additionally, the top hub genes were validated based on overall survival and immunohistochemistry using The Human Protein Atlas. Of the top 20 hub genes identified, four (KRT14, KIT, RAD51, and TTK) were considered as prognostic risk factors based on overall survival. KRT14 and KIT expression levels were upregulated while those of RAD51 and TTK were downregulated in patients with breast cancer. The four proposed candidate hub genes might aid in further understanding the molecular changes that distinguish primary breast tumours from metastatic tumours as well as help in developing novel therapeutics. Furthermore, they may serve as effective prognostic risk markers based on the strong correlation between their expression and patient overall survival.
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  • 文章类型: Journal Article
    乳腺癌(BC)是研究最广泛的疾病,由于其患病率较高,异质性和死亡率。
    本研究旨在比较21个世界地区和全球超过28年的数据中的女性BC趋势,并评估社会人口统计学转变与女性BC风险之间的关联。
    我们使用全球疾病负担研究数据,并根据21个世界地区和社会人口统计学指数(SDI)测量女性BC负担。使用年龄周期队列(APC)分析来估计不同SDI区域BC的时间和队列趋势。
    按世界各地区划分,女性BC发病率的年龄标准化率在高收入北美很高(ASR,92.9;(95%UI,89.2、96.6)),2017年西欧(84.7;(73.4,97.2))和澳大利亚(86;(81.7,90.2))。而这一比率在1990年至2017年间在东亚显著增加了89.5%。我们观察到SDI和死亡之间的负相关,和DALYs在全球区域的死亡和DALYs的25个及以下百分位数。Further,在全球范围内,在2017年和1990年,SDI与病死率百分比呈强烈负相关(r2017=-0.93;r1990=-0.92),在撒哈拉以南非洲中部地区,病死率最高.总的来说,病死率的风险在SDI高的中等国家下降最明显,在SDI较低的国家中,近期队列中病死率风险的降低是最低的.
    BC负担的各个地区之间存在显着差异。有必要减轻欠发达国家和发展中国家不列颠哥伦比亚省的健康负担,因为欠发达国家面临更高程度的健康相关负担。公共卫生管理人员应执行更分类和具有成本效益的筛查和治疗干扰,以减少由BC引起的死亡。主要在医疗保健供应不足的中、低SDI国家。
    Breast cancer (BC) is the most widely studied disease due to its higher prevalence, heterogeneity and mortality.
    This study aimed to compare female BC trends among 21 world regions and globally over 28 year of data and to assess the association between sociodemographic transitions and female BC risks.
    We used Global burden of disease study data and measure the female BC burden according to 21 world regions and sociodemographic indices (SDI). Age-period-cohort (APC) analysis was used to estimate time and cohort trend of BC in different SDI regions.
    By world regions, age-standardised rate of female BC incidence were high in high-income-North America (ASR, 92.9; (95 %UI, 89.2, 96.6)), Western Europe (84.7; (73.4, 97.2)) and Australia (86; (81.7, 90.2)) in 2017. Whereas this rate was significantly increased by 89.5% between 1990 and 2017 in East Asia. We observed negative association between SDI and death, and DALYs in 25th and below percentiles of death and DALYs for the worldwide regions. Further, there was observed a strong negative correlation between SDI and case fatality percent (r2017 = -0.93; r1990 = -0.92) in both 2017 and 1990 worldwide and highest case fatality percentage was observed in Central Sub-Saharan Africa. Overall, the risk of case-fatality rate tends to decrease most noticeably in high middle SDI countries, and the reduction of the risk of case-fatality rate in the recent cohort was the lowest in the low SDI countries.
    Remarkable variations exist among various regions in BC burden. There is a need to reduce the health burden from BC in less developed and under developing countries, because under-developed countries are facing higher degree of health-related burden. Public health managers should execute more classified and cost-effective screening and treatment interferences to lessen the deaths caused by BC, predominantly among middle and low SDI countries having inadequate healthcare supplies.
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  • 文章类型: Journal Article
    未经批准:乳腺癌(BC)幸存者长期合并症的负担增加,包括心力衰竭(HF)。然而,对HF亚型发展的风险了解有限,例如具有保留射血分数的HF(HFpEF),BC幸存者
    UNASSIGNED:本研究旨在评估绝经后BC幸存者中HFpEF和射血分数降低的HF(HFrEF)的发生率,并确定与HF亚型相关的生活方式和心血管危险因素。
    未经授权:在妇女健康倡议中,对确诊为侵袭性BC的参与者进行随访,以确定住院HF的发生率,裁定程序确定了左心室射血分数。我们计算了HF的累积发生率,HFpEF,和HFrEF。我们估计了与HF相关的危险因素的HR,HFpEF,和HFrEF使用Cox比例风险生存模型。
    未经评估:在2,272BC幸存者中(28.6%的黑人和64.9%的白人),住院HFpEF和HFrEF的累计发病率分别为6.68%和3.96%,分别,中位数为7.2年(IQR:3.6-12.3年)。对于HFpEF,既往心肌梗死(HR:2.83;95%CI:1.28-6.28),腰围更大(HR:1.99;95%CI:1.14-3.49),和吸烟史(HR:1.65;95%CI:1.01-2.67)是多变量模型中最强的危险因素。除了腰围,HFrEF观察到类似的模式,虽然没有一个是重要的。对于那些没有HF的人来说,住院HFpEF的BC幸存者的总死亡率风险为5.65(95%CI:4.11-7.76),在那些住院的HFrEF患者中,它是3.77(95%CI:2.51-5.66)。
    未经证实:在这个老年人群中,种族多样化的BC幸存者,HFpEF的发病率,根据HF住院的定义,高于HFrEF。HF也与死亡风险增加相关。HF的危险因素与普通人群很大程度上相似,但先前的HFpEF心肌梗死除外。值得注意的是,腰围和吸烟都是可能改变的因素。
    UNASSIGNED: Breast cancer (BC) survivors experience an increased burden of long-term comorbidities, including heart failure (HF). However, there is limited understanding of the risk for the development of HF subtypes, such as HF with preserved ejection fraction (HFpEF), in BC survivors.
    UNASSIGNED: This study sought to estimate the incidence of HFpEF and HF with reduced ejection fraction (HFrEF) in postmenopausal BC survivors and to identify lifestyle and cardiovascular risk factors associated with HF subtypes.
    UNASSIGNED: Within the Women\'s Health Initiative, participants with an adjudicated diagnosis of invasive BC were followed to determine the incidence of hospitalized HF, for which adjudication procedures determined left ventricular ejection fraction. We calculated cumulative incidences of HF, HFpEF, and HFrEF. We estimated HRs for risk factors in relation to HF, HFpEF, and HFrEF using Cox proportional hazards survival models.
    UNASSIGNED: In 2,272 BC survivors (28.6% Black and 64.9% White), the cumulative incidences of hospitalized HFpEF and HFrEF were 6.68% and 3.96%, respectively, over a median of 7.2 years (IQR: 3.6-12.3 years). For HFpEF, prior myocardial infarction (HR: 2.83; 95% CI: 1.28-6.28), greater waist circumference (HR: 1.99; 95% CI: 1.14-3.49), and smoking history (HR: 1.65; 95% CI: 1.01-2.67) were the strongest risk factors in multivariable models. With the exception of waist circumference, similar patterns were observed for HFrEF, although none were significant. In relation to those without HF, the risk of overall mortality in BC survivors with hospitalized HFpEF was 5.65 (95% CI: 4.11-7.76), and in those with hospitalized HFrEF, it was 3.77 (95% CI: 2.51-5.66).
    UNASSIGNED: In this population of older, racially diverse BC survivors, the incidence of HFpEF, as defined by HF hospitalizations, was higher than HFrEF. HF was also associated with an increased mortality risk. Risk factors for HF were largely similar to the general population with the exception of prior myocardial infarction for HFpEF. Notably, both waist circumference and smoking represent potentially modifiable factors.
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  • 文章类型: Journal Article
    目的:发展为脑转移瘤(BMs)的乳腺癌(BC)患者的预后很差。因此,探索BC中BMs的病因并确定参与此过程的关键基因对改善BC患者的生存具有重要意义。
    方法:从TCGA和GEO数据库下载BC患者的基因表达数据和临床信息。将TCGA-BRCA和GSE12276中的差异表达基因(DEGs)重叠以找到差异表达的转移基因(DEMGs)。通过STRING数据库构建了DEMGs的蛋白质-蛋白质相互作用(PPI)网络。应用ClusterProfilerR包进行DEMGs的基因本体论(GO)富集分析。绘制单变量Cox回归分析和Kaplan-Meier(K-M)曲线以筛选与总生存期和转移复发生存期相关的DEMGs,这些基因被确定为与BC中的BMs相关的关键基因。分别分析脑复发的BC患者和其他复发的BC患者的免疫浸润和免疫检查点的表达。计算关键基因的表达与不同浸润的免疫细胞或差异表达的免疫检查点之间的相关性。通过对各关键基因的基因集富集分析(GSEA),探讨关键基因参与BC患者BMs的潜在机制。利用CTD数据库预测关键基因的药物-基因相互作用网络。
    结果:在TCGA数据库中,在M0和M1的BC患者中发现了154个DEG。在患有脑复发和其他复发的BC患者中总共鉴定出667个DEG。通过重叠这些DEG,确定了17个DEMGs,细胞增殖相关的生物学过程和免疫相关的分子功能。单因素Cox回归分析和Kaplan-Meier曲线显示,CXCL9和GPR171与总体生存率和转移复发生存率密切相关,并被确定为与BC中BMs相关的关键基因。免疫浸润和免疫检查点表达分析表明,脑复发与其他复发之间的免疫微环境存在显着差异。GSEA表明CXCL9和GPR171可能通过免疫相关途径调节BC中的BM。
    结论:我们的研究确定了与BC患者BMs相关的关键基因,并探讨了BCBMs病因的潜在机制。这些发现可能为治疗患有BMs的BC患者提供了一种有希望的方法。
    OBJECTIVE: The prognosis of breast cancer (BC) patients who develop into brain metastases (BMs) is very poor. Thus, it is of great significance to explore the etiology of BMs in BC and identify the key genes involved in this process to improve the survival of BC patients with BMs.
    METHODS: The gene expression data and the clinical information of BC patients were downloaded from TCGA and GEO database. Differentially expressed genes (DEGs) in TCGA-BRCA and GSE12276 were overlapped to find differentially expressed metastatic genes (DEMGs). The protein-protein interaction (PPI) network of DEMGs was constructed via STRING database. ClusterProfiler R package was applied to perform the gene ontology (GO) enrichment analysis of DEMGs. The univariate Cox regression analysis and the Kaplan-Meier (K-M) curves were plotted to screen DEMGs associated with the overall survival and the metastatic recurrence survival, which were identified as the key genes associated with the BMs in BC. The immune infiltration and the expressions of immune checkpoints for BC patients with brain relapses and BC patients with other relapses were analyzed respectively. The correlations among the expressions of key genes and the differently infiltrated immune cells or the differentially expressed immune checkpoints were calculated. The gene set enrichment analysis (GSEA) of each key gene was conducted to investigate the potential mechanisms of key genes involved in BC patients with BMs. Moreover, CTD database was used to predict the drug-gene interaction network of key genes.
    RESULTS: A total of 154 DEGs were identified in BC patients at M0 and M1 in TCGA database. A total of 667 DEGs were identified in BC patients with brain relapses and with other relapses. By overlapping these DEGs, 17 DEMGs were identified, which were enriched in the cell proliferation related biological processes and the immune related molecular functions. The univariate Cox regression analysis and the Kaplan-Meier curves revealed that CXCL9 and GPR171 were closely associated with the overall survival and the metastatic recurrence survival and were identified as key genes associated with BMs in BC. The analyses of immune infiltration and immune checkpoint expressions showed that there was a significant difference of the immune microenvironment between brain relapses and other relapses in BC. GSEA indicated that CXCL9 and GPR171 may regulate BMs in BC via the immune-related pathways.
    CONCLUSIONS: Our study identified the key genes associated with BMs in BC patients and explore the underlying mechanisms involved in the etiology of BMs in BC. These findings may provide a promising approach for the treatments of BC patients with BMs.
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  • 文章类型: Journal Article
    背景:对ECM的功能多功能性和动态特性的更深入了解提高了对癌症生物学的理解。翻译意义:这项工作提供了ECM的重要性,以开发更多的模拟乳腺癌模型的深入视图,旨在重建肿瘤微环境的组成部分和架构。特别关注来自组织和细胞培养的脱细胞基质,在采购和应用中,因为他们在癌症研究和制药领域取得了巨大的成功。摘要:细胞外基质(ECM)越来越被认为是细胞行为和对乳腺癌(BC)治疗反应的主要调节因子。在BC进展期间,乳腺ECM在组成和组织上被重塑和改变。积累的证据表明,ECM的组成和力学的变化,由肿瘤-基质相互作用以及ECM重塑酶协调,积极参与BC的进展和转移。了解特定的ECM成分如何调节致瘤过程已导致对开发基于生物材料的仿生ECM模型以概括关键肿瘤特征的兴趣增加。脱细胞ECMs(dECMs)已成为有前途的体外3D肿瘤模型,其在加工和应用方面的最新进展可能成为BC研究和制药业卓越的生物材料。这篇综述详细介绍了ECM在BC进展中的贡献,并强调了基于dECM的生物材料作为有前途的个性化肿瘤模型的应用,可以更准确地模拟BC的致瘤机制和对治疗的反应。这将允许设计适合每个肿瘤的特定特征的靶向治疗方法,这将对应用于BC患者的精准医学产生重大影响。
    BACKGROUND: A deeper knowledge of the functional versatility and dynamic nature of the ECM has improved the understanding of cancer biology. Translational Significance: This work provides an in-depth view of the importance of the ECM to develop more mimetic breast cancer models, which aim to recreate the components and architecture of tumor microenvironment. Special focus is placed on decellularized matrices derived from tissue and cell culture, both in procurement and applications, as they have achieved great success in cancer research and pharmaceutical sector. Abstract: The extracellular matrix (ECM) is increasingly recognized as a master regulator of cell behavior and response to breast cancer (BC) treatment. During BC progression, the mammary gland ECM is remodeled and altered in the composition and organization. Accumulated evidence suggests that changes in the composition and mechanics of ECM, orchestrated by tumor-stromal interactions along with ECM remodeling enzymes, are actively involved in BC progression and metastasis. Understanding how specific ECM components modulate the tumorigenic process has led to an increased interest in the development of biomaterial-based biomimetic ECM models to recapitulate key tumor characteristics. The decellularized ECMs (dECMs) have emerged as a promising in vitro 3D tumor model, whose recent advances in the processing and application could become the biomaterial by excellence for BC research and the pharmaceutical industry. This review offers a detailed view of the contribution of ECM in BC progression, and highlights the application of dECM-based biomaterials as promising personalized tumor models that more accurately mimic the tumorigenic mechanisms of BC and the response to treatment. This will allow the design of targeted therapeutic approaches adapted to the specific characteristics of each tumor that will have a great impact on the precision medicine applied to BC patients.
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  • 文章类型: Journal Article
    根据2020年全球癌症统计GLOBOCAN估计,女性乳腺癌被发现是最常见的癌症,估计有230万新病例(11.7%),是全球女性癌症死亡的第四大原因(6.9%)。明确表征肿瘤特征的新诊断标记物的鉴定是迫切需要的。本研究旨在研究INF-γ874T/A基因多态性在不同乳腺癌预后因素中的作用。对163例乳腺癌患者进行多态性检测分析,79名乳腺患者和144名对照患者的发炎细胞。使用扩增难治性突变系统-聚合酶链反应方法(ARMS-PCR)检测基因多态性。INF-γT874A基因多态性的分布在BC患者中显示INF-γ874T/A基因型TT之间具有很强的显着相关性(ORTT:6.41[95%CI=2.72-15.1]P<0.0001)。与健康对照组相比,T等位基因具有很强的显着相关性(ORT:1.99[95%CI=1.43-2.76]P<0.0001)。在ICB组中,与INF-γ874T/A基因型AT基因型密切相关(ORAT:2.28[95%CI=1.22-4.29]P=0.007)。从不同的组织学BC激素标记物中,人表皮生长因子受体2(HER2)在INF-γ874T/A基因型TT(P=0.03)和隐性模型(TT与AAATP=0.03)中显示出显着关联。关于不同的BC预后模型,管腔B的预后不良之一,(ER+vePR+veHer2+ve)在宿主INF-γ+874T/A基因型(TT,P=0.03)和隐性模型(TT与AAATP=0.02)与良好预后激素状态腔A模型相比,(ER+vePR+veHer2-ve)。这似乎是对埃及BC患者的INF-γ874T/A基因多态性相关感兴趣的第一项研究。T等位基因,TT基因型和INF-γ+874T/A基因变异体的隐性模型被证明是BC发病的危险因素。它可以作为指导BC癌变和风险过程的实用生物标志物。
    According Global Cancer Statistics 2020 GLOBOCAN estimates female breast cancer was found as the most commonly diagnosed cancer, with an estimated 2.3 million new cases (11.7%), and the fourth leading cause (6.9%) of cancer death among women worldwide. Identification of new diagnostic marker sharply characterize the tumor feature is intensive need. The present work was performed to investigate the involvement of the INF-γ + 874 T/A gene polymorphism in different breast cancer prognostic factors. Polymorphism detection analysis was performed on 163 subjects from breast cancer patients, 79 with inflamed cells of breast patients and 144 controls. The gene polymorphism was detected using the amplification refractory mutation system- polymerase chain reaction method (ARMS-PCR). The distribution of INF-γ T + 874A gene polymorphism shows strong significant association between INF-γ + 874 T/A genotypes TT in BC patients (ORTT: 6.41 [95% CI = 2.72-15.1] P < 0.0001) as well as strong significant association regarding T allele (ORT: 1.99 [95% CI = 1.43-2.76] P < 0.0001) when compared to the healthy control. In ICB group the strong association was noted with INF-γ + 874 T/A genotypes AT genotype (ORAT: 2.28 [95% CI = 1.22-4.29] P = 0.007). From the different histological BC hormonal markers the human epidermal growth factor receptor 2 (HER2) was showing significant association in INF-γ + 874 T/A genotypes TT (P = 0.03) and recessive model (TT versus AA + AT P = 0.03). Concerning different BC prognostic models, the poor prognostic one of luminal B, (ER+ve PR+ve Her2+ve) show significant association in the host INF-γ + 874 T/A genotype (TT, P = 0.03) and recessive model (TT versus AA + AT P = 0.02) when compared to the good prognostic hormonal status luminal A model, (ER+ve PR+ve Her2-ve). It seems that this is the first study that interested in correlate the INF-γ + 874 T/A gene polymorphisms in Egyptian BC patients. T allele, TT genotype and recessive model of the INF-γ + 874 T/A gene variants were documented as risk factors for BC pathogenesis. It may be used as practical biomarker to guide the BC carcinogenesis and risk process.
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  • 文章类型: Journal Article
    乳腺癌是环境因素和遗传因素之间多种相互作用的结果。传统上,根据组织病理学和临床特征治疗乳腺癌。像人类基因组微阵列这样的DNA技术现在已经部分整合到临床实践中,并用于开发新的“个性化药物”和“药物遗传学”,以提高癌症药物的效率和安全性。我们研究了四种已建立的治疗方法-ER导管乳腺癌-对差异基因表达的影响。治疗包括单药他莫昔芬,两剂多西他赛和卡培他滨,或联合三剂CAF(环磷酰胺,阿霉素,和氟尿嘧啶)和CMF(环磷酰胺,甲氨蝶呤,和氟尿嘧啶)。Genevestigator8.1.0用于比较浸润性导管癌患者的五个数据集,未经治疗或用选定的药物治疗,来自健康控制的人。我们确定了74个差异表达基因涉及三个途径,即,凋亡(外在和内在),氧化信号,和PI3K/Akt信令。处理影响了凋亡基因的表达(TNFRSF10B[TRAIL],FAS,CASS3/6/7/8,PMAIP1[NOXA],BNIP3L,BNIP3、BCL2A1和BCL2),氧化应激相关基因(NOX4,XDH,MAOA,GSR,GPX3和SOD3),和PI3K/Akt通路基因(ERBB2[HER2])。乳腺癌治疗是复杂的,患者的药物反应和疗效各不相同。这就需要确定新的生物标志物来预测药物反应。利用现有数据和新技术。GSR,NOX4、CASP3和ERBB2是预测原发性ER+导管乳腺癌治疗反应的潜在生物标志物。
    Breast cancer arises as a result of multiple interactions between environmental and genetic factors. Conventionally, breast cancer is treated based on histopathological and clinical features. DNA technologies like the human genome microarray are now partially integrated into clinical practice and are used for developing new \"personalized medicines\" and \"pharmacogenetics\" for improving the efficiency and safety of cancer medications. We investigated the effects of four established therapies-for ER+ ductal breast cancer-on the differential gene expression. The therapies included single agent tamoxifen, two-agent docetaxel and capecitabine, or combined three-agents CAF (cyclophosphamide, doxorubicin, and fluorouracil) and CMF (cyclophosphamide, methotrexate, and fluorouracil). Genevestigator 8.1.0 was used to compare five datasets from patients with infiltrating ductal carcinoma, untreated or treated with selected drugs, to those from the healthy control. We identified 74 differentially expressed genes involved in three pathways, i.e., apoptosis (extrinsic and intrinsic), oxidative signaling, and PI3K/Akt signaling. The treatments affected the expression of apoptotic genes (TNFRSF10B [TRAIL], FAS, CASP3/6/7/8, PMAIP1 [NOXA], BNIP3L, BNIP3, BCL2A1, and BCL2), the oxidative stress-related genes (NOX4, XDH, MAOA, GSR, GPX3, and SOD3), and the PI3K/Akt pathway gene (ERBB2 [HER2]). Breast cancer treatments are complex with varying drug responses and efficacy among patients. This necessitates identifying novel biomarkers for predicting the drug response, using available data and new technologies. GSR, NOX4, CASP3, and ERBB2 are potential biomarkers for predicting the treatment response in primary ER+ ductal breast carcinoma.
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