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Luminal breast cancer

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https://www.readbyqxmd.com/read/28822803/discerning-clinical-responses-in-breast-cancer-based-upon-molecular-signatures
#1
REVIEW
William B Coleman, Carey K Anders
Breast cancer represents a heterogeneous collection of diseases with disparate clinical behaviors, responses to treatment, and patient outcomes, despite common histopathological features at diagnosis. Examination of molecular signatures of breast cancer (based upon complex gene expression patterns) enabled identification of several intrinsic molecular subtypes: luminal A, luminal B, HER2-enriched, and basal-like. The intrinsic subtypes are associated with measures of clinical aggressiveness, but do not perfectly predict patient outcomes...
August 16, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28819443/predictive-value-of-primary-tumor-site-for-loco-regional-recurrence-in-early-breast-cancer-patients-with-one-to-three-positive-axillary-lymphadenophy
#2
Shaoqing Niu, Ge Wen, Yufeng Ren, Yiyang Li, Lingling Feng, Chengtao Wang, Xiaobo Huang, Bixiu Wen, Yujing Zhang
Introduction: It remains controversial on high risks for early breast cancer patients with one to three axillary nodes after mastectomy who is predisposition to locoregional recurrence. The present study is to investigate the relationship between primary tumor site and loco-regional recurrence (LRR) and explore the predictive value of clinicopathological characteristics in LRR for early breast cancer patients with one to three positive axillary lymph nodes after mastectomy. Methods: We reviewed the clinical data of 656 consecutively diagnosed patients with pT1-2N1M0 breast cancer who were treated in Sun Yat-sen University Cancer Center with radical operation without postoperative radiotherapy between March 1998 and December 2010...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28817737/myc-mediates-cancer-stem-like-cells-and-emt-changes-in-triple-negative-breast-cancers-cells
#3
Shuping Yin, Vino T Cheryan, Liping Xu, Arun K Rishi, Kaladhar B Reddy
Women with triple negative breast cancer (TNBC) have poor prognosis compared to other breast cancer subtypes. There were several reports indicating racial disparity in breast cancer outcomes between African American (AA) and European American (EA) women. For example, the mortality rates of AA breast cancer patients were three times higher than of EA patients, even though, the incidence is lower in AA women. Our in vitro studies indicate that cancer stem-like cells (CSCs) derived from AA TNBC cell lines have significantly higher self-renewal potential (mammosphere formation) than CSCs derived from EA cell lines...
2017: PloS One
https://www.readbyqxmd.com/read/28816969/immediate-breast-reconstruction-with-omental-flap-for-luminal-breast-cancer-patients-ten-clinical-case-reports
#4
Nanlin Li, Zhao Zheng, Jipeng Li, Jing Fan, Ting Wang, Juliang Zhang, Hui Wang, Jianghao Chen, Yonggang Lv, Jun Yi, Meiling Huang, Rui Ling
RATIONALE: Luminal subtype breast cancer, accounting for 70 to 80% of all breast cancers, has been reported to be associated with good prognosis. However, for the patients with large mass or worse mass position, omental flap transplantation may provide a new option for breast reconstruction. PATIENT CONCERNS: Ten patients (6 luminal B1, 2 luminal B2, 2 luminal A), were enrolled into the study, between January 23, 2015 and August 22, 2016. The mean age was 34.6 ± 6...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816390/differential-expression-and-androgen-regulation-of-micrornas-and-metalloprotease-13-in-breast-cancer-cells
#5
Mamoun Ahram, Ebtihal Mustafa, Rand Zaza, Shatha Abu Hammad, Mariam Alhouhud, Randa Bawadi, Malek Zihlif
MicroRNA molecules (miRNAs) play important roles in regulating cell behavior. The expression of certain miRNAs has been shown to be regulated by the androgen receptor (AR), which seems to have a critical role in the tumorigenic process of breast cancer. The differential expression of 84 miRNAs was first examined in three breast cancer cell lines: the luminal MCF-7 and T47D cells and the molecular apocrine MDA-MB-453 cells. Analysis of basal expression of miRNAs revealed that each cell line had distinct miRNA expression where let-7a and -7b were markers of MDA-MB-453 cells, whereas miR-205 was a marker for the luminal cell lines...
August 17, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28809778/reprimo-a-potential-p53-dependent-tumor-suppressor-gene-is-frequently-hypermethylated-in-estrogen-receptor-%C3%AE-positive-breast-cancer
#6
Kurt Buchegger, Ismael Riquelme, Tamara Viscarra, Carmen Ili, Priscilla Brebi, Tim Hui-Ming Huang, Juan Carlos Roa
Aberrant DNA methylation is a hallmark of many cancers. Currently, there are four intrinsic molecular subtypes in breast cancer (BC): Luminal A, B, Her2-positive, and triple negative (TNBC). Recently, The Cancer Genome Atlas (TCGA) project has revealed that Luminal subtypes have higher levels of genome-wide methylation that may be a result of Estrogen/Estrogen receptor α (E2/ERα) signaling pathway activation. In this study, we analyze promoter CpG-island (CGIs) of the Reprimo (RPRM) gene in breast cancers (n = 77), cell lines (n = 38), and normal breast tissue (n = 10) using a MBDCap-seq database...
August 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28808873/elevated-hu-antigen-receptor-hur-expression-is-associated-with-tumor-aggressiveness-and-poor-prognosis-but-not-with-cox-2-expression-in-invasive-breast-carcinoma-patients
#7
Constantinos Giaginis, Anastasia Sampani, Iolly Kotta-Loizou, Ioanna Giannopoulou, Eugene Danas, Ekaterini Politi, Gerasimos Tsourouflis, Gregorios Kouraklis, Efstratios Patsouris, Antonios Keramopoulos, Lydia Nakopoulou, Stamatios Theocharis
Hu-antigen R (HuR), a RNA-binding protein, is considered to play a crucial role in tumor development and progression by stabilizing or regulating a group of cellular mRNAs of cancer-related genes, such as cyclooxygenase-2 (COX-2). The present study aimed to evaluate the clinical significance of HuR and COX-2 expression in invasive breast carcinoma. HuR and COX-2 protein expression was assessed immunohistochemically on paraffin-embedded breast cancer tissue sections obtained from 121 patients and was statistically analyzed with clinicopathological parameters, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2), as well as with tumor cells' proliferative capacity and overall and disease-free patients' survival...
August 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28802057/hmgb1-released-by-autophagic-cancer-associated-fibroblasts-maintains-the-stemness-of-luminal-breast-cancer-cells
#8
Xi-Long Zhao, Yong Lin, Jun Jiang, Zhuo Tang, Shuai Yang, Lu Lu, Yan Liang, Xue Liu, Jiao Tan, Xu-Gang Hu, Qin Niu, Wen-Juan Fu, Ze-Xuan Yan, De-Yu Guo, Yi-Fang Ping, Ji Ming Wang, Xia Zhang, Hsiang-Fu Kung, Xiu-Wu Bian, Xiao-Hong Yao
Cancer stem/initiating cells (CSCs/CICs) and their microenvironmental niche play a vital role in malignant tumour recurrence and metastasis. Cancer associated fibroblasts (CAFs) are major components of the niche of breast cancer initiating cells (BCICs) and their interactions may profoundly affect breast cancer progression. Autophagy has been considered as a critical process for CIC maintenance, but whether it is involved in the cross-talk between CAFs and CICs to affect tumourigenesis and pathological significance remains elusive...
August 12, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28801774/bcl-2-antigen-expression-in-luminal-a-and-triple-negative-breast-cancer
#9
Carla Solange Escórcio-Dourado, Luana Mota Martins, Camila Maria Simplício-Revoredo, Fabiane Araújo Sampaio, Cléciton Braga Tavares, João Paulo da Silva-Sampaio, Umbelina Soares Borges, Francisco Adelton Alves-Ribeiro, Pedro Vitor Lopes-Costa, José Charles Lima-Dourado, Benedito Borges da Silva
Biomarkers for the prognosis of breast cancer have been routinely used in clinical practice, including the expression of hormone receptors, Ki-67 and HER-2. More recently, Bcl-2 has been recognized as an important prognostic factor in breast cancer, although controversies persist with respect to the significance of its expression. The aim of the present study was to evaluate Bcl-2 antigen expression in luminal A and triple-negative breast cancer. Sixty women with invasive ductal carcinoma were included in the study and divided into two groups: Group A (luminal A) and Group B (triple-negative), with 30 cases in each group...
August 11, 2017: Medical Oncology
https://www.readbyqxmd.com/read/28799536/estrogen-receptor-esr1-mutation-in-bone-metastases-from-breast-cancer
#10
Stephan Bartels, Matthias Christgen, Angelina Luft, Sascha Persing, Kai Jödecke, Ulrich Lehmann, Hans Kreipe
Activating mutations of estrogen receptor α gene (ESR1) in breast cancer can cause endocrine resistance of metastatic tumor cells. The skeleton belongs to the metastatic sides frequently affected by breast cancer. The prevalence of ESR1 mutation in bone metastasis and the corresponding phenotype are not known. In this study bone metastases from breast cancer (n=231) were analyzed for ESR1 mutation. In 27 patients (12%) (median age 73 years, range: 55-82 years) activating mutations of ESR1 were detected. The most frequent mutation was p...
August 11, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28797035/protein-expression-patterns-of-cell-cycle-regulators-in-operable-breast-cancer
#11
Flora Zagouri, Vassiliki Kotoula, George Kouvatseas, Maria Sotiropoulou, Triantafyllia Koletsa, Theofani Gavressea, Christos Valavanis, Helen Trihia, Mattheos Bobos, Georgios Lazaridis, Angelos Koutras, George Pentheroudakis, Pantelis Skarlos, Dimitrios Bafaloukos, Niki Arnogiannaki, Sofia Chrisafi, Christos Christodoulou, Pavlos Papakostas, Gerasimos Aravantinos, Paris Kosmidis, Charisios Karanikiotis, George Zografos, Christos Papadimitriou, George Fountzilas
BACKGROUND-AIM: To evaluate the prognostic role of elaborate molecular clusters encompassing cyclin D1, cyclin E1, p21, p27 and p53 in the context of various breast cancer subtypes. METHODS: Cyclin E1, cyclin D1, p53, p21 and p27 were evaluated with immunohistochemistry in 1077 formalin-fixed paraffin-embedded tissues from breast cancer patients who had been treated within clinical trials. Jaccard distances were computed for the markers and the resulted matrix was used for conducting unsupervised hierarchical clustering, in order to identify distinct groups correlating with prognosis...
2017: PloS One
https://www.readbyqxmd.com/read/28796549/association-of-brca-mutation-types-imaging-features-and-pathologic-findings-in-patients-with-breast-cancer-with-brca1-and-brca2-mutations
#12
Su Min Ha, Eun Young Chae, Joo Hee Cha, Hak Hee Kim, Hee Jung Shin, Woo Jung Choi
OBJECTIVE: The purpose of this study is to retrospectively evaluate the relationships between the BRCA mutation types, imaging features, and pathologic findings of breast cancers in BRCA1 and BRCA2 mutation carriers. MATERIALS AND METHODS: We identified patients with breast cancer with BRCA gene mutations from January 2000 to December 2014. After excluding patients who underwent lesion excision before MRI, 99 BRCA1 and 103 BRCA2 lesions in 187 women (mean age, 39...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28795861/lnc00673-errlr01-is-a-prognostic-indicator-of-overall-survival-in-breast-cancer
#13
Ubaidat Abdul-Rahman, Balázs Gyoörffy, Brian D Adams
LncRNAs are novel noncoding RNAs involved in the epigenetic regulation of gene expression by recruiting ribonucleoprotein complexes to specific genomic loci to initiate histone methylation and/or other chromatin modifications. LncRNAs themselves function as tumor suppressors or oncogenes, depending on the gene regulatory networks they govern. We identified lnc00673 (ERRLR01) as a marker of overall survival (OS) in breast cancer patients. Specifically, ERRLR01 levels were elevated in triple-negative breast cancer (TNBC) as compared to Luminal- A, Luminal-B, and HER2 breast cancer subtypes...
August 10, 2017: Transcription
https://www.readbyqxmd.com/read/28795272/pet-imaging-on-dynamic-metabolic-changes-after-combination-therapy-of-paclitaxel-and-the-traditional-chinese-medicine-in-breast-cancer-bearing-mice
#14
Yao Chen, Ling Wang, Hao Liu, Fahuan Song, Caiyun Xu, Kai Zhang, Qing Chen, Shuang Wu, Yunqi Zhu, Ying Dong, Min Zhou, Hong Zhang, Mei Tian
PURPOSE: The aim of the study was to non-invasively evaluate the anticancer activity of a traditional Chinese medicine-Huaier, combined with paclitaxel (PTX) in breast cancer bearing mice by detecting dynamic metabolic changes with positron emission tomography (PET). PROCEDURES: Balb/c nude mice were randomly divided into one of the four groups: Huaier, PTX, PTX + Huaier, or the control. PET imaging with 2-deoxy-2-[(18)F]fluoro-D-glucose ([(18)F]FDG) was performed to monitor the metabolic changes in BT474 (luminal B) and MDA-MB-231 (triple-negative) breast cancer xenografts...
August 9, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28794686/tumor-infiltrating-leukocyte-density-is-independent-of-tumor-grade-and-molecular-subtype-in-aggressive-breast-cancer-of-western-kenya
#15
Rispah T Sawe, Simeon K Mining, Ayub V Ofulla, Kirtika Patel, Bernard Guyah, David Chumba, Jenifer R Prosperi, Maggie Kerper, Zonggao Shi, Mayra Sandoval-Cooper, Katherine Taylor, Sunil Badve, M Sharon Stack, Laurie E Littlepage
BACKGROUND: Tumors commonly are infiltrated by leukocytes, or tumor infiltrating leukocytes (TILs). It remains unclear, however, if the density and type of individual TILs has a direct or simply correlative role in promoting poor prognosis in breast cancer patients. Breast cancer in Kenyan women is aggressive with presentation at a young age, with advanced grade (grade III), large tumor size (>2.0 cm), and poor prognosis. We previously observed that the tumors were predominantly estrogen receptor positive (ER+) but also included both a high percentage of triple negative tumors and also increased immune cell infiltration within the tumors...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/28791482/assessment-of-ki67-expression-for-breast-cancer-subtype-classification-and-prognosis-in-the-nurses-health-study
#16
Megan A Healey, Kelly A Hirko, Andrew H Beck, Laura C Collins, Stuart J Schnitt, A Heather Eliassen, Michelle D Holmes, Rulla M Tamimi, Aditi Hazra
PURPOSE: Ki67 is a proliferation marker commonly assessed by immunohistochemistry in breast cancer, and it has been proposed as a clinical marker for subtype classification, prognosis, and prediction of therapeutic response. However, the clinical utility of Ki67 is limited by the lack of consensus on the optimal cut point for each application. METHODS: We assessed Ki67 by immunohistochemistry using Definiens digital image analysis (DIA) in 2653 cases of incident invasive breast cancer diagnosed in the Nurses' Health Study from 1976 to 2006...
August 8, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28789814/colocalization-of-metastasis-associated-proteins-1-2-and-estrogen-receptor-alpha-in-rat-epididymis
#17
Pang Cheng, Jie Zhao, Huilian Qiao, He Ma, Binfang Ma, Jinhua Wei, Yunqing Li, Zhen Li
It has been suggested that metastasis-associated proteins 1 and 2 (MTA1 and MTA2) are capable of suppressing estrogen receptor alpha (ERα) transactivation activity in breast cancer cells. ERα, which is present in the epididymis, is a crucial mediator of maintaining the luminal environment necessary for proper sperm maturation and function. The present study was undertaken to analyze the expression profile of both MTA1 and MTA2 in the epididymis of rats and to ascertain whether MTA1/2 colocalizes with ERα in the epididymis and primary cultured epididymal epithelial cells...
July 29, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28781022/determinants-of-last-line-treatment-in-metastatic-breast-cancer
#18
Marika Cinausero, Lorenzo Gerratana, Elisa De Carlo, Donatella Iacono, Marta Bonotto, Valentina Fanotto, Vanessa Buoro, Debora Basile, Maria Grazia Vitale, Karim Rihawi, Gianpiero Fasola, Fabio Puglisi
BACKGROUND: In metastatic breast cancer (MBC) patients, the identification of factors helping clinicians in the choice between active therapy versus best supportive care is needed clinically. The aim of the present study was to identify the clinicopathologic factors that could improve the prognostic valuation of MBC patients and clinical decision-making at the end of life. PATIENTS AND METHODS: The present study analyzed data from a retrospective series of 522 MBC patients treated at the oncology department (University Hospital of Udine) from January 2004 to June 2014...
July 14, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28780646/a-comparative-study-of-ki-67-antigen-expression-between-luminal-a-and-triple-negative-subtypes-of-breast-cancer
#19
Umbelina Soares Borges, Danylo Rafhael Costa-Silva, João Paulo da Silva-Sampaio, Carla Solange Escórcio-Dourado, Airton Mendes Conde, Viriato Campelo, Luiz Henrique Gebrim, Benedito Borges da Silva, Pedro Vitor Lopes-Costa
Tumor biomarkers such as hormone receptors, HER-2 and Ki-67 are used routinely in clinical practice for classification of molecular subtypes of breast cancer. Cell proliferation evaluated by Ki-67 antigen expression is important to determine tumor aggressiveness. However, there is a paucity of studies comparing Ki-67 expression in an expressive number of cells among molecular subtypes of breast cancer, particularly among less and more aggressive tumors, such as luminal A and triple-negative, which have led us to the present study...
September 2017: Medical Oncology
https://www.readbyqxmd.com/read/28776547/a-retrospective-survival-analysis-of-anatomic-and-prognostic-stage-group-based-on-the-american-joint-committee-on-cancer-8th-edition-cancer-staging-manual-in-luminal-b-human-epidermal-growth-factor-receptor-2-negative-breast-cancer
#20
Ling Xu, Jiang-Hong Li, Jing-Ming Ye, Xue-Ning Duan, Yuan-Jia Cheng, Ling Xin, Qian Liu, Bin Zhou, Yin-Hua Liu
BACKGROUND: Current understanding of tumor biology suggests that breast cancer is a group of diseases with different intrinsic molecular subtypes. Anatomic staging system alone is insufficient to provide future outcome information. The American Joint Committee on Cancer (AJCC) expert panel updated the 8th edition of the staging manual with prognostic stage groups by incorporating biomarkers into the anatomic stage groups. In this study, we retrospectively analyzed the data from our center in China using the anatomic and prognostic staging system based on the AJCC 8th edition staging manual...
August 20, 2017: Chinese Medical Journal
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