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https://www.readbyqxmd.com/read/28938159/lunatic-fringe-and-p53-cooperatively-suppress-mesenchymal-stem-like-breast-cancer
#1
Wen-Cheng Chung, Shubing Zhang, Lavanya Challagundla, Yunyun Zhou, Keli Xu
Claudin-low breast cancer (CLBC) is a poor prognosis molecular subtype showing stemness and mesenchymal features. We previously discovered that deletion of a Notch signaling modulator, Lunatic Fringe (Lfng), in the mouse mammary gland induced a subset of tumors resembling CLBC. Here we report that deletion of one copy of p53 on this background not only accelerated mammary tumor development but also led to a complete penetrance of the mesenchymal stem-like phenotype. All mammary tumors examined in the Lfng/p53 compound mutant mice displayed a mesenchymal/spindloid pathology...
September 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28937263/imaging-features-of-breast%C3%A2-cancers-on-digital%C3%A2-breast%C3%A2-tomosynthesis%C3%A2-according-to%C3%A2-molecular%C3%A2-subtype-association-with%C3%A2-breast%C3%A2-cancer%C3%A2-detection
#2
Su Hyun Lee, Jung Min Chang, Sung Ui Shin, A Jung Chu, Ann Yi, Nariya Cho, Woo Kyung Moon
OBJECTIVE: To evaluate imaging features of breast cancers on digital breast tomosynthesis (DBT) according to molecular subtype and to determine whether the molecular subtype affects breast cancer detection on DBT. METHODS: This was an institutional review board-approved study with a waiver of informed consent. DBT findings of 288 invasive breast cancers were reviewed according to BI-RADS lexicon. Detectability of breast cancer was quantified by the number of readers (0-3) who correctly detected the cancer in an independent blinded review...
September 13, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28935174/timp-3-mrna-expression-levels-positively-correlates-with-levels-of-mir-21-in-in-situ-bc-and-negatively-in-pr-positive-invasive-bc
#3
Nina Petrovic, Ahmad Sami, Jelena Martinovic, Marina Zaric, Irina Nakashidze, Silvana Lukic, Snezana Jovanovic-Cupic
BACKGROUND: Breast carcinomas (BC) belong to a heterogeneous group of malignant diseases. Correct categorization of BC based on molecular biomarkers has a very important role in deciding the proper course of therapy for each patient. It has been already shown that the decrease of TIMP metalloproteinase inhibitor 3 (TIMP-3) together with overexpression of microRNA-21 (miR-21) might be involved in the process of BC invasion. This is the first study that examined relationship among miR-21, TIMP-3 mRNA and TIPM-3 protein levels in BC groups formed according to invasiveness...
September 6, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28934488/de-novo-pathway-based-biomarker-identification
#4
Nicolas Alcaraz, Markus List, Richa Batra, Fabio Vandin, Henrik J Ditzel, Jan Baumbach
Gene expression profiles have been extensively discussed as an aid to guide the therapy by predicting disease outcome for the patients suffering from complex diseases, such as cancer. However, prediction models built upon single-gene (SG) features show poor stability and performance on independent datasets. Attempts to mitigate these drawbacks have led to the development of network-based approaches that integrate pathway information to produce meta-gene (MG) features. Also, MG approaches have only dealt with the two-class problem of good versus poor outcome prediction...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28929359/immunohistochemical-versus-molecular-blueprint-and-mammaprint-subtyping-of-breast-carcinoma-outcome-results-from-the-eortc-10041-big-3-04-mindact-trial
#5
G Viale, F A de Snoo, L Slaets, J Bogaerts, L van 't Veer, E J Rutgers, M J Piccart-Gebhart, L Stork-Sloots, A Glas, L Russo, P Dell'Orto, K Tryfonidis, S Litière, F Cardoso
PURPOSE: This study compares immunohistochemical (IHC) versus molecular subtyping (BluePrint and MammaPrint) in the population of patients enrolled in MINDACT and outcome based on molecular subtyping (MS) versus surrogate pathological subtyping (PS) as defined by the 2013 St. Gallen guidelines. METHODS: MS classified patients in the following subtypes: Luminal A, Luminal B, HER-2-, and Basal-type. IHC/FISH for pathological subtyping (ER, PgR, HER-2, and Ki67) was centrally assessed in the European Institute of Oncology (n = 5806)...
September 19, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28926895/-clinical-utility-study-of-21-gene-assay-in-927-chinese-patients-with-early-breast-cancer
#6
J Y Wu, Y Fang, L Lin, Y Zong, X S Chen, O Huang, J R He, L Zhu, W G Chen, Y F Li, K W Shen
Objective: To investigate the distribution patterns of 21-gene assay and its influencing factors in Chinese patients with early breast cancer. Methods: Nine hundred and twenty-seven early breast cancer patients were retrospectively recruited from January 2009 to December 2015 at Ruijin Hospital, Shanghai Jiaotong University School of Medicine. The 21-gene reverse transcriptase-polymerase chain reaction(RT-PCR) assay were conducted in paraffin-embedded tumor tissues to calculate the Recurrence Score(RS). Immunohistochemistry(IHC) assay was used to measure the expression levels of estrogen receptor(ER), progesterone receptor(PR) and Ki-67...
September 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28924212/chst9-rs1436904-genetic-variant-contributes-to-prognosis-of-triple-negative-breast-cancer
#7
Jupeng Yuan, Nasha Zhang, Hui Zhu, Jibing Liu, Huaixin Xing, Fei Ma, Ming Yang
Triple-negative breast cancer (TNBC) refers to one aggressive histological subtype of breast cancer with high heterogeneity and poor prognosis after standard therapy. Lack of clearly established molecular mechanism driving TNBC progression makes personalized therapy more difficult. Thus, identification of genetic variants associated with TNBC prognosis will show clinic significance for individualized treatments. Our study is aimed to evaluate the prognostic value of the genome wide association study (GWAS)-identified CHST9 rs1436904 and AQP4 rs527616 genetic variants in our established early-stage TNBC sample database...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923544/modulation-of-oncogenic-transcription-factors-by-bioactive-natural-products-in-breast-cancer
#8
REVIEW
Mohadeseh Hasanpourghadi, Ashok Kumar Pandurangan, Mohd Rais Mustafa
Carcinogenesis, a multi-step phenomenon, characterized by alterations at genetic level and affecting the main intracellular pathways controlling cell growth and development. There are growing number of evidences linking oncogenes to the induction of malignancies, especially breast cancer. Modulations of oncogenes lead to gain-of-function signals in the cells and contribute to the tumorigenic phenotype. These signals yield a large number of proteins that cause cell growth and inhibit apoptosis. Transcription factors such as STAT, p53, NF-κB, c-JUN and FOXM1, are proteins that are conserved among species, accumulate in the nucleus, bind to DNA and regulate the specific genes targets...
September 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28923419/tumor-associated-macrophages-are-strongly-related-to-vascular-invasion-non-luminal-subtypes-and-interval-breast-cancer
#9
Tor A Klingen, Ying Chen, Hans Aas, Elisabeth Wik, Lars A Akslen
Tumor associated macrophages (TAM) resemble M2 macrophages, promote tumor invasion and show strong expression of CD163 in breast cancer. We here investigated the association between CD163 positive macrophages and vascular invasion, molecular subgroups, mode of detection, and patient outcome. We performed a population-based, retrospective study of invasive breast cancer from the Norwegian Breast Cancer Screening Programme in Vestfold County (2004-2009), including 200 screen-detected and 82 interval cancers. Immunohistochemically CD163 positive macrophages were counted in the most active areas (hot-spots) and dichotomized as high (upper quartile) and low counts...
September 15, 2017: Human Pathology
https://www.readbyqxmd.com/read/28922402/new-insights-into-the-metastatic-behavior-after-breast-cancer-surgery-according-to-well-established-clinicopathological-variables-and-molecular-subtypes
#10
Oreste Claudio Buonomo, Emanuele Caredda, Ilaria Portarena, Gianluca Vanni, Augusto Orlandi, Claudia Bagni, Giuseppe Petrella, Leonardo Palombi, Paolo Orsaria
Despite advances in treatment, up to 30% of patients with early breast cancer (BC) experience distant disease relapse. However, a comprehensive understanding of tumor spread and site-specific recurrence patterns remains lacking. This retrospective case-control study included 103 consecutive patients with metastatic BC admitted to our institution (2000-2013). Cases were matched according to age, tumor biology, and clinicopathological features to 221 patients with non-metastatic BC (control group). The median follow-up period among the 324 eligible patients was 7...
2017: PloS One
https://www.readbyqxmd.com/read/28919786/genetic-variants-in-long-noncoding-rna-h19-contribute-to-the-risk-of-breast-cancer-in-a-southeast-china-han-population
#11
Yuxiang Lin, Fangmeng Fu, Yazhen Chen, Wei Qiu, Songping Lin, Peidong Yang, Meng Huang, Chuan Wang
The long noncoding RNA (lncRNA) H19 is a maternally expressed imprinted gene that plays important roles in tumorigenesis, progression, and metastasis. However, the association between polymorphisms on H19 and breast cancer (BC) susceptibility has remained obscure. In this case-control study, we assessed the interaction between two lncRNA H19 single-nucleotide polymorphisms (SNPs) (rs217727 C>T, rs2839698 C>T) and the risk of BC in a Chinese Han population. In total, 1,005 BC cases and 1,020 healthy controls were enrolled in this study...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28919302/obesity-and-breast-cancer-role-of-estrogens-and-the-molecular-underpinnings-of-aromatase-regulation-in-breast-adipose-tissue
#12
REVIEW
Céline Gérard, Kristy A Brown
One in eight women will develop breast cancer over their lifetime making it the most common female cancer. The cause of breast cancer is multifactorial and includes hormonal, genetic and environmental cues. Obesity is now an accepted risk factor for breast cancer in postmenopausal women, particularly for the hormone-dependent subtype of breast cancer. Obesity, which is characterized by an excess accumulation of body fat, is at the origin of chronic inflammation of white adipose tissue and is associated with dramatic changes in the biology of adipocytes leading to their dysfunction...
September 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28915682/systematic-review-and-meta-analysis-of-the-efficacy-of-breast-conservation-therapy-followed-by-radiotherapy-in-four-breast-cancer-subtypes
#13
Xin-Bin Pan, Rou-Jun Chen, Shi-Ting Huang, Yan-Ming Jiang, Xiao-Dong Zhu
The different molecular subtypes of breast cancer are associated with distinct outcomes. We assessed the efficacy of breast conservation therapy (BCT) followed by radiotherapy for patients with different breast cancer subtypes. We searched the MEDLINE, EMBASE, and Cochrane Library databases to identify studies published prior to April 30, 2016 that assessed the efficacy of BCT followed by radiotherapy in breast cancer patients with different molecular subtypes. A meta-analysis of seven studies that included 3,798 luminal A, 770 luminal B, 344 human epidermal growth factor receptor 2 (Her-2), and 767 triple-negative breast cancer (TNBC) patients was performed...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28913723/therapeutic-implications-of-the-molecular-and-immune-landscape-of-triple-negative-breast-cancer
#14
REVIEW
Ana C Gregório, Manuela Lacerda, Paulo Figueiredo, Sérgio Simões, Sérgio Dias, João Nuno Moreira
Treatment and management of breast cancer imposes a heavy burden on public health care, and incidence rates continue to increase. Breast cancer is the most common female neoplasia and primary cause of death among women worldwide. The recognition of breast cancer as a complex and heterogeneous disease, comprising different molecular entities, was a landmark in our understanding of this malignancy. Valuing the impact of the molecular characteristics on tumor behavior enabled a better assessment of a patient's prognosis and increased the predictive power to therapeutic response and clinical outcome...
September 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28912475/the-impact-of-young-age-for-prognosis-by-subtype-in-women-with-early-breast-cancer
#15
Weibin Lian, Fangmeng Fu, Yuxiang Lin, Minjun Lu, Boyang Chen, Peidong Yang, Bangwei Zeng, Meng Huang, Chuan Wang
Young age (≤40 years) use to be considered an independent risk factor for the prognosis of women with early-stage breast cancer. We conducted a retrospective analysis to investigate this claim in a population of young patients who were stratified by molecular subtype. We identified 2,125 women with stage I to III breast cancer from the Fujian Medical University Union Hospital. Multivariable Cox proportional hazards models were used to analyze the relationship between age groups stratified by molecular subtype and 5-year disease-free survival (DFS), 5-year distant metastasis-free survival (DMFS), and 5-year breast cancer-specific survival (BCSS)...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912426/deconvolution-of-dna-methylation-identifies-differentially-methylated-gene-regions-on-1p36-across-breast-cancer-subtypes
#16
Alexander J Titus, Gregory P Way, Kevin C Johnson, Brock C Christensen
Breast cancer is a complex disease consisting of four distinct molecular subtypes. DNA methylation-based (DNAm) studies in tumors are complicated further by disease heterogeneity. In the present study, we compared DNAm in breast tumors with normal-adjacent breast samples from The Cancer Genome Atlas (TCGA). We constructed models stratified by tumor stage and PAM50 molecular subtype and performed cell-type reference-free deconvolution to control for cellular heterogeneity. We identified nineteen differentially methylated gene regions (DMGRs) in early stage tumors across eleven genes (AGRN, C1orf170, FAM41C, FLJ39609, HES4, ISG15, KLHL17, NOC2L, PLEKHN1, SAMD11, WASH5P)...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912168/alternative-polyadenylation-of-prelid1-regulates-mitochondrial-ros-signaling-and-cancer-outcomes
#17
Austin E Gillen, Heather M Brechbuhl, Tomomi M Yamamoto, Enos C Kline, Manoj Pillai, Jay Hesselberth, Peter Kabos
Disruption of post-transcriptional gene regulation is a critical step in oncogenesis that can be difficult to observe using traditional molecular techniques. To overcome this limitation, a modified polyadenylation site sequencing (PAS-seq) protocol was used to generate a genome-wide map of alternative polyadenylation (APA) events in human primary breast tumor specimens and matched normal tissue. This approach identified an APA event in the PRELID1 mRNA that enhances its steady state level and translational efficiency, and is a strong breast cancer subtype-dependent predictor of patient clinical outcomes...
September 14, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28912152/distinct-effects-of-body-mass-index-and-waist-hip-ratio-on-risk-of-breast-cancer-by-joint-estrogen-and-progestogen-receptor-status-results-from-a-case-control-study-in-northern-and-eastern-china-and-implications-for-chemoprevention
#18
Fei Wang, Liyuan Liu, Shude Cui, Fuguo Tian, Zhimin Fan, Cuizhi Geng, Xuchen Cao, Zhenlin Yang, Xiang Wang, Hong Liang, Shu Wang, Hongchuan Jiang, Xuening Duan, Haibo Wang, Guolou Li, Qitang Wang, Jianguo Zhang, Feng Jin, Jinhai Tang, Liang Li, Shiguang Zhu, Wenshu Zuo, Zhongbing Ma, Fei Zhou, Lixiang Yu, Yujuan Xiang, Liang Li, Shuohao Shen, Zhigang Yu
BACKGROUND: Obesity is a consideration in the pharmacologic intervention for estrogen receptor (ER) positive (ER+) breast cancer risk. Body mass index (BMI) and waist/hip ratio (WHR) have demonstrated different effects on breast cancer risk in relation to estrogen receptor (ER) status, but the results have been inconsistent. Furthermore, the situation in Chinese women remains unclear. MATERIALS AND METHODS: We conducted a case-control study including 1,439 breast cancer cases in Northern and Eastern China...
September 14, 2017: Oncologist
https://www.readbyqxmd.com/read/28903439/lymph-node-status-in-different-molecular-subtype-of-breast-cancer-triple-negative-tumours-are-more-likely-lymph-node-negative
#19
Ning Liu, Zhigang Yang, Xiaozhen Liu, Yun Niu
BACKGROUND AND OBJECTIVES: To investigate the association between different molecular subtype (MST) and the axillary lymph nodal (ALN) status. MATERIALS AND METHODS: A total of 528 female patients with primary breast cancer were collected. Survival estimates were calculated using the Kaplan-Meier method, univariate and multivariate logistic regression models. RESULTS: Triple negative and Luminal A breast cancers were more frequently node-negative (N0) when compared to Luminal B and Her-2 positive cancers (77...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28900476/breast-cancer-in-angola-molecular-subtypes-a-first-glance
#20
Fernando Miguel, Lygia Vieira Lopes, Eduardo Ferreira, Emília Ribas, Alexis Fuentes Pelaez, Conceição Leal, Teresina Amaro, Paula Lopes, Cristina Mendes Santos, Carlos Lopes, Lúcio Lara Santos
PURPOSE: The aim of this study was to investigate the breast cancer (BC) molecular subtypes according to its surrogate immunohistochemistry (IHC) markers. We conducted a preliminary study, to correlate the clinical pathological profiles and molecular subtypes of breast cancer in Luanda, Angola. METHODS: From January 2011 to 30 December 2014, 140 consecutive cases of microscopically confirmed invasive breast carcinoma were classified regarding histology and IHC (ER, PR, HER2, and Ki-67)...
2017: Ecancermedicalscience
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