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https://www.readbyqxmd.com/read/28430642/immunocompetent-mouse-allograft-models-for-development-of-therapies-to-target-breast-cancer-metastasis
#1
Yuan Yang, Howard H Yang, Ying Hu, Peter H Watson, Huaitian Liu, Thomas R Geiger, Miriam R Anver, Diana C Haines, Philip Martin, Jeffrey E Green, Maxwell P Lee, Kent W Hunter, Lalage M Wakefield
Effective drug development to combat metastatic disease in breast cancer would be aided by the availability of well-characterized preclinical animal models that (a) metastasize with high efficiency, (b) metastasize in a reasonable time-frame, (c) have an intact immune system, and (d) capture some of the heterogeneity of the human disease. To address these issues, we have assembled a panel of twelve mouse mammary cancer cell lines that can metastasize efficiently on implantation into syngeneic immunocompetent hosts...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28408616/association-study-confirmed-three-breast-cancer-specific-molecular-subtype-associated-susceptibility-loci-in-chinese-han-women
#2
Yihui Xu, Mengyun Chen, Chenchen Liu, Xiaowei Zhang, Wei Li, Huaidong Cheng, Jun Zhu, Mingjun Zhang, Zhendong Chen, Bo Zhang
BACKGROUND: Breast cancer is a heterogeneous and polygenic disease that can be divided into different molecular subtypes based on histological and genomic features. To date, numerous susceptibility loci of breast cancer have been discovered by genome-wide association studies and may expand the genetic features. However, few loci have been further studied according to molecular subtypes. MATERIALS AND METHODS: We genotyped 23 recently discovered single nucleotide polymorphisms using the Sequenom iPLEX platform in a female Chinese cohort of 3,036 breast cancer patients (2,935 samples matched molecular subtypes) and 3,036 healthy controls...
April 13, 2017: Oncologist
https://www.readbyqxmd.com/read/28387904/study-on-correlation-between-pkib-and-pakt-expression-in-breast-cancer-tissues
#3
J-B Zhang, W Song, Y-Y Wang, M-G Liu, M-M Sun, H Liu
OBJECTIVE: This study is to explore the expression of cyclic AMP (cAMP) dependent protein kinase inhibitor (PKIB) in human breast cancer and the correlation with phosphorylated protein kinase B (pAkt) expression in the tumor tissues. MATERIALS AND METHODS: Surgical removal of the tissue samples from 148 patients with primary breast cancer from 2011-2015 were selected, and then we detected the PKIB, estrogen receptor (ER), progesterone receptor (PR) and proto oncogene (HER2) by using immunohistochemical technique and the Allred score classification standard...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28365335/competing-risks-of-mortality-by-pam50-intrinsic-subtype-of-british-columbia-tamoxifen-treated-cohort-of-postmenopausal-patients-with-breast-cancer
#4
Judith-Anne W Chapman, Shuzhen Liu, Samuel Leung, Torsten O Nielsen
BACKGROUND: PAM50 intrinsic subtypes have been shown to affect breast cancer prognosis. METHODS: A British Columbia cohort of 718 postmenopausal women treated with tamoxifen, without chemotherapy, had tumors intrinsically subtyped (luminal A, luminal B, basal, HER2) and centrally reviewed by immunohistochemistry (IHC) for estrogen and progesterone receptor (ER and PgR). We tested whether intrinsic subtype and other patient and tumor characteristics were associated with type of death...
January 20, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28356938/expression-of-axl-and-its-prognostic-significance-in-human-breast-cancer
#5
Gaoyuan Jin, Zhenzhen Wang, Jianguang Wang, Like Zhang, Yanbin Chen, Pengfei Yuan, Dechun Liu
Breast cancer is the most common malignant cancer and second leading cause of cancer-related death among women, and its prevalence continues to increase. Axl overexpression has been identified in the many types of human cancer, and it has been demonstrated to participate in signaling pathways related to carcinogenesis and cancer development. In the present study, Axl expression was examined by performing immunohistochemical staining in 60 breast cancer tumors and 40 benign breast lesions (25 mammary dysplasia and 15 breast fibroadenoma)...
February 2017: Oncology Letters
https://www.readbyqxmd.com/read/28299476/a-comparison-of-the-molecular-subtypes-of-triple-negative-breast-cancer-among-non-asian-and-taiwanese-women
#6
Ling-Ming Tseng, Jen-Hwey Chiu, Chun-Yu Liu, Yi-Fang Tsai, Yun-Lin Wang, Chu-Wen Yang, Yi-Ming Shyr
BACKGROUND: "Precision medicine" is a concept that by utilizing modern molecular diagnostics, an effective therapy is accurately applied for each cancer patient to improve their survival rates. The treatment of triple-negative breast cancer (TNBC) remains a challenging issue. The aim of this study was to compare the molecular subtypes of triple-negative breast cancer (TNBC) between Taiwanese and Non-Asian women. METHODS: GEO Datasets for non-Asian (12 groups, n = 1450) and Taiwanese (3 groups, n = 465) breast cancer, including 617 TNBC, were acquired, normalized and cluster analyzed...
March 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28245581/systematic-identification-and-assessment-of-therapeutic-targets-for-breast-cancer-based-on-genome-wide-rna-interference-transcriptomes
#7
Yang Liu, Xiaoyao Yin, Jing Zhong, Naiyang Guan, Zhigang Luo, Lishan Min, Xing Yao, Xiaochen Bo, Licheng Dai, Hui Bai
With accumulating public omics data, great efforts have been made to characterize the genetic heterogeneity of breast cancer. However, identifying novel targets and selecting the best from the sizeable lists of candidate targets is still a key challenge for targeted therapy, largely owing to the lack of economical, efficient and systematic discovery and assessment to prioritize potential therapeutic targets. Here, we describe an approach that combines the computational evaluation and objective, multifaceted assessment to systematically identify and prioritize targets for biological validation and therapeutic exploration...
February 24, 2017: Genes
https://www.readbyqxmd.com/read/28178676/lymph-node-status-in-different-molecular-subtype-of-breast-cancer-triple-negative-tumours-are-more-likely-lymph-node-negative
#8
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. 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...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28142040/bmi-reproductive-factors-and-breast-cancer-molecular-subtypes-a-case-control-study-and-meta-analysis
#9
Hui Li, Xuezheng Sun, Erline Miller, Qiong Wang, Ping Tao, Li Liu, Ying Zhao, Mengjie Wang, Yana Qi, Jiayuan Li
BACKGROUND: The effects of body mass index (BMI) and reproductive factors may vary among breast cancer molecular subtypes, evidence of which is lacking in East Asia. METHODS: From 2002 to 2010, 1256 breast cancer patients and 1416 healthy women were recruited. Anthropometric and reproductive factors were collected from medical charts. Breast cancer subtype was defined by ER, PR, and HER2 status. Polytomous logistic regression was used to evaluate associations between risk factors and breast cancer subtypes, with subgroup analysis by menopausal status...
April 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/28099938/bi-rads-3-5-microcalcifications-can-preoperatively-predict-breast-cancer-her2-and-luminal-a-molecular-subtype
#10
DongZhi Cen, Li Xu, Ningna Li, Zhiguang Chen, Lu Wang, Shuqin Zhou, Biao Xu, Chun Ling Liu, Zaiyi Liu, Tingting Luo
PURPOSE: To investigate associations between breast cancer molecular subtype and the patterns of mammographically detected calcifications. RESULTS: Identified were 93 (19.1%) Luminal A, 242 (49.9%) Luminal B, 108 (22.2%) HER2 and 42 (8.7%) basal subtypes. In univariate analysis, the clinicopathological parameters and BI-RADS 3-5 microcalcifications, which consisted 9 selected features was significantly associated with breast cancer molecular subtype (all P < 0...
February 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28055972/integrative-genomic-and-transcriptomic-analysis-for-pinpointing-recurrent-alterations-of-plant-homeodomain-genes-and-their-clinical-significance-in-breast-cancer
#11
Huimei Yu, Yuanyuan Jiang, Lanxin Liu, Wenqi Shan, Xiaofang Chu, Zhe Yang, Zeng-Quan Yang
A wide range of the epigenetic effectors that regulate chromatin modification, gene expression, genomic stability, and DNA repair contain structurally conserved domains called plant homeodomain (PHD) fingers. Alternations of several PHD finger-containing proteins (PHFs) due to genomic amplification, mutations, deletions, and translocations have been linked directly to various types of cancer. However, little is known about the genomic landscape and the clinical significance of PHFs in breast cancer. Hence, we performed a large-scale genomic and transcriptomic analysis of 98 PHF genes in breast cancer using TCGA and METABRIC datasets and correlated the recurrent alterations with clinicopathological features and survival of patients...
February 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28039161/the-different-t-cell-receptor-repertoires-in-breast-cancer-tumors-draining-lymph-nodes-and-adjacent-tissues
#12
Ting Wang, Changxi Wang, Jinghua Wu, Chenyang He, Wei Zhang, Jiayun Liu, Ruifang Zhang, Yonggang Lv, Yongping Li, Xiaojing Zeng, Hongzhi Cao, Xiuqing Zhang, Xun Xu, Chen Huang, Ling Wang, Xiao Liu
T lymphocytes infiltrate the microenvironment of breast cancer tumors and play a pivotal role in tumor immune surveillance. Relationships between the T-cell receptors (TCR) borne by T cells within tumors, in the surrounding tissues, and in draining lymph nodes are largely unexplored in human breast cancer. Consequently, information about the relative extent of possible T-cell exchange between these tissues is also lacking. Here, we have analyzed the TCR repertoire of T cells using multiplex PCR and high-throughput sequencing of the TCRβ chain in the tissues of tumor, adjacent nontumor, and axillary lymph nodes of breast cancer patients...
February 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28009986/conditionally-reprogrammed-normal-and-primary-tumor-prostate-epithelial-cells-a-novel-patient-derived-cell-model-for-studies-of-human-prostate-cancer
#13
Olga A Timofeeva, Nancy Palechor-Ceron, Guanglei Li, Hang Yuan, Ewa Krawczyk, Xiaogang Zhong, Geng Liu, Geeta Upadhyay, Aleksandra Dakic, Songtao Yu, Shuang Fang, Sujata Choudhury, Xueping Zhang, Andrew Ju, Myeong-Seon Lee, Han C Dan, Youngmi Ji, Yong Hou, Yun-Ling Zheng, Chris Albanese, Johng Rhim, Richard Schlegel, Anatoly Dritschilo, Xuefeng Liu
Our previous study demonstrated that conditional reprogramming (CR) allows the establishment of patient-derived normal and tumor epithelial cell cultures from a variety of tissue types including breast, lung, colon and prostate. Using CR, we have established matched normal and tumor cultures, GUMC-29 and GUMC-30 respectively, from a patient's prostatectomy specimen. These CR cells proliferate indefinitely in vitro and retain stable karyotypes. Most importantly, only tumor-derived CR cells (GUMC-30) produced tumors in xenografted SCID mice, demonstrating maintenance of the critical tumor phenotype...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/27932757/-expressions-of-epithelial-cell-adhesion-molecule-vimentin-and-n-cadherin-in-molecular-subtypes-of-breast-cancer-and-the-correlation-among-them
#14
Limei Fu, Min Liu, Xuemei Yu, Xinjun Li
To examine the expressions of epithelial cell adhesion molecule (EpCAM), vimentin and N-cadherin in breast cancer and its molecular subtypes, and to explore the correlation among them.
 Methods: The expressions of EpCAM, vimentin and N-cadherin were detected by immunohistochemistry in 835 patients with breast cancer, and their correlations with clinical pathological features and prognosis were analyzed.
 Results: The expression rates of EpCAM, vimentin and N-cadherin in the patients were 53.4%, 11.4% and 9...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27923913/a-tgf%C3%AE-mir-182-brca1-axis-controls-the-mammary-differentiation-hierarchy
#15
Haydeliz Martinez-Ruiz, Irineu Illa-Bochaca, Coral Omene, Douglas Hanniford, Qi Liu, Eva Hernando, Mary Helen Barcellos-Hoff
Maintenance of mammary functional capacity during cycles of proliferation and regression depends on appropriate cell fate decisions of mammary progenitor cells to populate an epithelium consisting of secretory luminal cells and contractile myoepithelial cells. It is well established that transforming growth factor-β (TGFβ) restricts mammary epithelial cell proliferation and that sensitivity to TGFβ is decreased in breast cancer. We show that TGFβ also exerts control of mammary progenitor self-renewal and lineage commitment decisions by stringent regulation of breast cancer associated 1 (BRCA1), which controls stem cell self-renewal and lineage commitment...
December 6, 2016: Science Signaling
https://www.readbyqxmd.com/read/27895496/identification-of-lncrna-fam83h-as1-as-a-novel-prognostic-marker-in-luminal-subtype-breast-cancer
#16
Fan Yang, Shi-Xu Lv, Lin Lv, Ye-Huan Liu, Si-Yang Dong, Zhi-Han Yao, Xuan-Xuan Dai, Xiao-Hua Zhang, Ou-Chen Wang
BACKGROUND: Luminal subtype breast cancer accounts for a predominant number of breast cancers. Considering the heterogeneity of the disease, it is urgent to develop novel biomarkers to improve risk stratification and optimize therapy choices. Long non-coding RNA (lncRNA) represents an emerging and understudied class of transcripts that play a significant role in cancer biology. Growing knowledge of cancer-associated lncRNAs contributes to the development of molecular markers for prognosis evaluation and gene therapy...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27833400/is-there-a-correlation-between-the-presence-of-a-spiculated-mass-on-mammogram-and-luminal-a-subtype-breast-cancer
#17
Song Liu, Xiao-Dong Wu, Wen-Jian Xu, Qing Lin, Xue-Jun Liu, Ying Li
OBJECTIVE: To determine whether the appearance of a spiculated mass on a mammogram is associated with luminal A subtype breast cancer and the factors that may influence the presence or absence of the spiculated mass. MATERIALS AND METHODS: Three hundred seventeen (317) patients who underwent image-guided or surgical biopsy between December 2014 and April 2015 were included in the study. Radiologists conducted retrospective assessments of the presence of spiculated masses according to the criteria of Breast Imaging Reporting and Data System...
November 2016: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/27768723/dissecting-the-origin-of-breast-cancer-subtype-stem-cell-and-the-potential-mechanism-of-malignant-transformation
#18
Xinyi Liu, Dongfei Feng, Dianming Liu, Shuyuan Wang, Xuexin Yu, Enyu Dai, Jing Wang, Lihong Wang, Wei Jiang
BACKGROUND: Breast cancer is the most common incident form of cancer in women including different subtypes. Cancer stem cells (CSCs) have been confirmed to exist in breast cancer. But the research on the origin of breast cancer subtype stem cells (BCSSCs) is still inadequate. METHODS: We identified the putative origin cells of BCSSCs through comparing gene signatures between BCSSCs and normal mammary cells from multiple perspectives: common signature, expression consistency, functional similarity and shortest path length...
2016: PloS One
https://www.readbyqxmd.com/read/27760635/-predictive-values-of-pathologic-complete-response-for-patient-outcome-in-different-molecular-subtypes-of-breast-cancer
#19
W Liu, J B Li, T Wang, L Bian, S H Zhang, H Q Zhang, J M Zhou, S T Song, Z F Jiang
Objective: To analyze the predict values of pathologic complete response (pCR) rates for patient outcome according to breast cancer (BC) molecular subtypes. Methods: Four hundred and sixteen patients with confirmed BC who received neoadjuvant chemotherapy (NCT) in The Affiliated Hospital of Military Medical Science Academy of the PLA were enrolled.The clinical and pathological characteristics of patients were collected. The primary endpoint was pCR rate and the secondary endpoint was disease free survival (DFS)...
September 27, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27716369/patient-survival-and-tumor-characteristics-associated-with-chek2-p-i157t-findings-from-the-breast-cancer-association-consortium
#20
Taru A Muranen, Carl Blomqvist, Thilo Dörk, Anna Jakubowska, Päivi Heikkilä, Rainer Fagerholm, Dario Greco, Kristiina Aittomäki, Stig E Bojesen, Mitul Shah, Alison M Dunning, Valerie Rhenius, Per Hall, Kamila Czene, Judith S Brand, Hatef Darabi, Jenny Chang-Claude, Anja Rudolph, Børge G Nordestgaard, Fergus J Couch, Steven N Hart, Jonine Figueroa, Montserrat García-Closas, Peter A Fasching, Matthias W Beckmann, Jingmei Li, Jianjun Liu, Irene L Andrulis, Robert Winqvist, Katri Pylkäs, Arto Mannermaa, Vesa Kataja, Annika Lindblom, Sara Margolin, Jan Lubinski, Natalia Dubrowinskaja, Manjeet K Bolla, Joe Dennis, Kyriaki Michailidou, Qin Wang, Douglas F Easton, Paul D P Pharoah, Marjanka K Schmidt, Heli Nevanlinna
BACKGROUND: P.I157T is a CHEK2 missense mutation associated with a modest increase in breast cancer risk. Previously, another CHEK2 mutation, the protein truncating c.1100delC has been associated with poor prognosis of breast cancer patients. Here, we have investigated patient survival and characteristics of breast tumors of germ line p.I157T carriers. METHODS: We included in the analyses 26,801 European female breast cancer patients from 15 studies participating in the Breast Cancer Association Consortium...
October 3, 2016: Breast Cancer Research: BCR
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