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Breast Cancer Research: BCR

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https://www.readbyqxmd.com/read/28330493/loss-of-mmp-8-in-ductal-carcinoma-in-situ-dcis-associated-myoepithelial-cells-contributes-to-tumour-promotion-through-altered-adhesive-and-proteolytic-function
#1
Muge Sarper, Michael D Allen, Jenny Gomm, Linda Haywood, Julie Decock, Sally Thirkettle, Ahsen Ustaoglu, Shah-Jalal Sarker, John Marshall, Dylan R Edwards, J Louise Jones
BACKGROUND: Normal myoepithelial cells (MECs) play an important tumour-suppressor role in the breast but display an altered phenotype in ductal carcinoma in situ (DCIS), gaining tumour-promoter functions. Matrix metalloproteinase-8 (MMP-8) is expressed by normal MECs but is lost in DCIS. This study investigated the function of MMP-8 in MECs and the impact of its loss in DCIS. METHODS: Primary normal and DCIS-associated MECs, and normal (N-1089) and DCIS-modified myoepithelial (β6-1089) cell lines, were used to assess MMP-8 expression and function...
March 23, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28327201/detecting-gene-signature-activation-in-breast-cancer-in-an-absolute-single-patient-manner
#2
E R Paquet, R Lesurf, A Tofigh, V Dumeaux, M T Hallett
BACKGROUND: The ability to reliably identify the state (activated, repressed, or latent) of any molecular process in the tumor of a patient from an individual whole-genome gene expression profile obtained from microarray or RNA sequencing (RNA-seq) promises important clinical utility. Unfortunately, all previous bioinformatics tools are only applicable in large and diverse panels of patients, or are limited to a single specific pathway/process (e.g. proliferation). METHODS: Using a panel of 4510 whole-genome gene expression profiles from 10 different studies we built and selected models predicting the activation status of a compendium of 1733 different biological processes...
March 21, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28302140/nighttime-eating-and-breast-cancer-among-chinese-women-in-hong-kong
#3
Mengjie Li, Lap Ah Tse, Wing-Cheong Chan, Chi-Hei Kwok, Siu-Lan Leung, Cherry Wu, Wai-Cho Yu, Priscilla Ming-Yi Lee, Koon-Ho Tsang, Sze-Hong Law, Roel Vermeulen, Fangyi Gu, Neil E Caporaso, Ignatius Tak-Sun Yu, Feng Wang, Xiaohong Rose Yang
BACKGROUND: A novel line of research suggests that eating at nighttime may have several metabolic consequences that are highly relevant to breast cancer. We investigated the association between nighttime eating habits after 10 p.m. and breast cancer in Hong Kong women. METHODS: A hospital-based case-control study was conducted during 2012-2015. A total of 922 patients with incident breast cancer (cases) and 913 hospital controls were recruited and interviewed using a standard questionnaire including information on eating behavior during both daytime and nighttime...
March 17, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28302160/increased-genomic-burden-of-germline-copy-number-variants-is-associated-with-early-onset-breast-cancer-australian-breast-cancer-family-registry
#4
Logan C Walker, John F Pearson, George A R Wiggins, Graham G Giles, John L Hopper, Melissa C Southey
BACKGROUND: Women with breast cancer who have multiple affected relatives are more likely to have inherited genetic risk factors for the disease. All the currently known genetic risk factors for breast cancer account for less than half of the average familial risk. Furthermore, the genetic factor(s) underlying an increased cancer risk for many women from multiple-case families remain unknown. Rare genomic duplications and deletions, known as copy number variants (CNVs), cover more than 10% of a human genome, are often not assessed in studies of genetic predisposition, and could account for some of the so-called "missing heritability"...
March 16, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28288659/a-clinical-model-for-identifying-the-short-term-risk-of-breast-cancer
#5
Mikael Eriksson, Kamila Czene, Yudi Pawitan, Karin Leifland, Hatef Darabi, Per Hall
BACKGROUND: Most mammography screening programs are not individualized. To efficiently screen for breast cancer, the individual risk of the disease should be determined. We describe a model that could be used at most mammography screening units without adding substantial cost. METHODS: The study was based on the Karma cohort, which included 70,877 participants. Mammograms were collected up to 3 years following the baseline mammogram. A prediction protocol was developed using mammographic density, computer-aided detection of microcalcifications and masses, use of hormone replacement therapy (HRT), family history of breast cancer, menopausal status, age, and body mass index...
March 14, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28284224/anthropometric-measures-and-serum-estrogen-metabolism-in-postmenopausal-women-the-women-s-health-initiative-observational-study
#6
Hannah Oh, Sally B Coburn, Charles E Matthews, Roni T Falk, Erin S LeBlanc, Jean Wactawski-Wende, Joshua Sampson, Ruth M Pfeiffer, Louise A Brinton, Nicolas Wentzensen, Garnet L Anderson, JoAnn E Manson, Chu Chen, Oleg Zaslavsky, Xia Xu, Britton Trabert
BACKGROUND: Several anthropometric measures have been associated with hormone-related cancers. However, it is unknown whether estrogen metabolism plays an important role in these relationships. We examined whether measured current body mass index (BMI), waist-to-hip ratio (WHR), height, and self-reported BMI at age 18 years were associated with serum estrogens/estrogen metabolites using baseline, cross-sectional data from 1835 postmenopausal women enrolled in the Women's Health Initiative Observational Study...
March 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28274272/the-method-of-detection-of-ductal-carcinoma-in-situ-has-no-therapeutic-implications-results-of-a-population-based-cohort-study
#7
Lotte E Elshof, Michael Schaapveld, Emiel J Rutgers, Marjanka K Schmidt, Linda de Munck, Flora E van Leeuwen, Jelle Wesseling
BACKGROUND: Population screening with mammography has resulted in increased detection of ductal carcinoma in situ (DCIS). The aim of this population-based cohort study was to assess whether the method of detection should be considered when determining prognosis and treatment in women with DCIS. METHODS: This study includes 7042 women aged 49-75 years, who were surgically treated for primary DCIS between 1989 and 2004 in the Netherlands. We calculated cumulative incidences of ipsilateral and contralateral invasive breast cancer and all-cause mortality among women with screen-detected, interval, or non-screening-related DCIS, and assessed the association between method of detection and these outcomes, using multivariable Cox regression analyses...
March 9, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28274247/gossypol-has-anti-cancer-effects-by-dual-targeting-mdm2-and-vegf-in-human-breast-cancer
#8
Jing Xiong, Jiansha Li, Qin Yang, Jun Wang, Tiefen Su, Sheng Zhou
BACKGROUND: Mouse double minute 2 (MDM2) and vascular endothelial growth factor (VEGF) are important molecules involved in tumor progression. We researched potential inhibitors that simultaneously target MDM2 and VEGF. In our recent study involving the performance of high-throughput screening with a fluorescence polarization assay, gossypol was identified as one of the top hits that inhibit protein-RNA binding activity. Because MDM2 is an RNA-binding protein and its targets include VEGF mRNA, we investigated whether gossypol has an inhibitory effect on MDM2-VEGF...
March 9, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28270217/dcytb-is-a-predictor-of-outcome-in-breast-cancer-that-functions-via-iron-independent-mechanisms
#9
David J Lemler, Miranda L Lynch, Lia Tesfay, Zhiyong Deng, Bibbin T Paul, Xiaohong Wang, Poornima Hegde, David H Manz, Suzy V Torti, Frank M Torti
BACKGROUND: Duodenal cytochrome b (DCYTB) is a ferrireductase that functions together with divalent metal transporter 1 (DMT1) to mediate dietary iron reduction and uptake in the duodenum. DCYTB is also a member of a 16-gene iron regulatory gene signature (IRGS) that predicts metastasis-free survival in breast cancer patients. To better understand the relationship between DCYTB and breast cancer, we explored in detail the prognostic significance and molecular function of DCYTB in breast cancer...
March 7, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28270176/response-to-lack-of-association-between-bovine-leukemia-virus-and-breast-cancer-in-chinese-patients
#10
LETTER
Gertrude Case Buehring
No abstract text is available yet for this article.
March 7, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28264701/zoledronic-acid-alters-hematopoiesis-and-generates-breast-tumor-suppressive-bone-marrow-cells
#11
Jessalyn M Ubellacker, Marie-Therese Haider, Molly J DeCristo, Gloria Allocca, Nicola J Brown, Daniel P Silver, Ingunn Holen, Sandra S McAllister
BACKGROUND: The bone-targeting agent zoledronic acid (ZOL) increases breast cancer survival in subsets of patients, but the underlying reasons for this protective effect are unknown. ZOL modulates the activity of osteoclasts and osteoblasts, which form hematopoietic stem cell niches, and therefore may affect hematopoietic cells that play a role in breast cancer progression. METHOD: Immunocompetent and immunocompromised strains of mice commonly used for breast cancer research were injected with a single, clinically relevant dose of ZOL (100 μg/kg) or vehicle control...
March 6, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28264697/circulating-gamma-glutamyl-transferase-and-development-of-specific-breast-cancer-subtypes-findings-from-the-apolipoprotein-mortality-risk-amoris-cohort
#12
Lydia Shackshaft, Mieke Van Hemelrijck, Hans Garmo, Håkan Malmström, Mats Lambe, Niklas Hammar, Göran Walldius, Ingmar Jungner, Wahyu Wulaningsih
BACKGROUND: Different etiological pathways may precede development of specific breast cancer subtypes and impact prevention or treatment strategies. We investigated the association between gamma-glutamyl transferase (GGT) and development of specific breast cancer subtypes based on oestrogen receptor (ER), progesterone receptor (PR) and HER2 status. METHODS: We included 231,283 cancer-free women in a Swedish cohort. Associations between GGT and breast cancer subtypes were investigated with nested case-control and case-case analyses...
March 6, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28253895/ezh2-protein-expression-in-normal-breast-epithelium-and-risk-of-breast-cancer-results-from-the-nurses-health-studies
#13
Francisco Beca, Kevin Kensler, Benjamin Glass, Stuart J Schnitt, Rulla M Tamimi, Andrew H Beck
BACKGROUND: Enhancer of zeste homolog 2 (EZH2) is a polycomb-group protein that is involved in stem cell renewal and carcinogenesis. In breast cancer, increased EZH2 expression is associated with aggressiveness and has been suggested to identify normal breast epithelium at increased risk of breast cancer development. However, the association between EZH2 expression in benign breast tissue and breast cancer risk has not previously been evaluated in a large prospective cohort. METHODS: We examined the association between EZH2 protein expression and subsequent breast cancer risk using logistic regression in a nested case-control study of benign breast disease (BBD) and breast cancer within the Nurses' Health Studies...
March 2, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28241844/immune-profiles-of-elderly-breast-cancer-patients-are-altered-by-chemotherapy-and-relate-to-clinical-frailty
#14
Jithendra Kini Bailur, Graham Pawelec, Sigrid Hatse, Barbara Brouwers, Ann Smeets, Patrick Neven, Annouschka Laenen, Hans Wildiers, Christopher Shipp
BACKGROUND: Effective therapeutic management of elderly patients with cancer, on an individual basis, remains a clinical challenge. Here, we identify novel biomarkers to assess elderly patients (≥70 years of age) with breast cancer undergoing treatment with or without chemotherapy. METHODS: We performed comprehensive geriatric assessment and measured markers sensitive to alteration in ageing, including leukocyte telomere length, CMV serostatus, levels of circulating growth factors and cytokines, and immune profiling of T cell and myeloid populations in blood before and at 3 months and 12 months after initiation of therapy, using flow cytometry...
February 28, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28222775/modification-of-the-association-between-recreational-physical-activity-and-survival-after-breast-cancer-by-promoter-methylation-in-breast-cancer-related-genes
#15
Lauren E McCullough, Jia Chen, Yoon Hee Cho, Nikhil K Khankari, Patrick T Bradshaw, Alexandra J White, Susan L Teitelbaum, Mary Beth Terry, Alfred I Neugut, Hanina Hibshoosh, Regina M Santella, Marilie D Gammon
BACKGROUND: Mechanisms underlying the inverse association between physical activity and survival after breast cancer are unresolved, but DNA methylation may play a role. We hypothesized that promoter methylation of breast cancer-related genes, as well as global methylation, may modify the association between prediagnostic recreational physical activity (RPA) and breast cancer mortality. METHODS: Using a population-based sample of 1254 women diagnosed with first primary breast cancer, we examined modification of the RPA-mortality association by gene-specific promoter methylation and global methylation...
February 21, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28183331/phase-ii-randomized-placebo-controlled-study-of-dovitinib-in-combination-with-fulvestrant-in-postmenopausal-patients-with-hr-her2-breast-cancer-that-had-progressed-during-or-after-prior-endocrine-therapy
#16
Antonino Musolino, Mario Campone, Patrick Neven, Neelima Denduluri, Carlos H Barrios, Javier Cortes, Kimberly Blackwell, Hatem Soliman, Zsuzsanna Kahan, Hervé Bonnefoi, Matthew Squires, Yong Zhang, Stephanie Deudon, Michael M Shi, Fabrice André
BACKGROUND: Overexpression of fibroblast growth factor receptor 1 (FGFR1), found in ≤8% of hormone receptor-positive (HR(+)), human epidermal growth factor receptor 2-negative (HER2(-)) breast cancer cases, is correlated with decreased overall survival and resistance to endocrine therapy (ET). Dovitinib, a potent FGFR inhibitor, has demonstrated antitumor activity in heavily pretreated patients with FGFR pathway-amplified breast cancer. METHODS: In this randomized, placebo-controlled phase II trial, we evaluated whether the addition of dovitinib to fulvestrant would improve outcomes in postmenopausal patients with HR(+), HER2(-) advanced breast cancer that had progressed during or after prior ET...
February 10, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28183333/erratum-to-genome-co-amplification-upregulates-a-mitotic-gene-network-activity-that-predicts-outcome-and-response-to-mitotic-protein-inhibitors-in-breast-cancer
#17
Zhi Hu, Jian-Hua Mao, Christina Curtis, Ge Huang, Shenda Gu, Laura Heiser, Marc E Lenburg, James E Korkola, Nora Bayani, Shamith Samarajiwa, Jose A Seoane, Mark A Dane, Amanda Esch, Heidi S Feiler, Nicholas J Wang, Mary Ann Hardwicke, Sylvie Laquerre, Jeff Jackson, Kenneth W Wood, Barbara Weber, Paul T Spellman, Samuel Aparicio, Richard Wooster, Carlos Caldas, Joe W Gray
No abstract text is available yet for this article.
February 9, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28183321/biomarker-analysis-of-the-neosphere-study-pertuzumab-trastuzumab-and-docetaxel-versus-trastuzumab-plus-docetaxel-pertuzumab-plus-trastuzumab-or-pertuzumab-plus-docetaxel-for-the-neoadjuvant-treatment-of-her2-positive-breast-cancer
#18
Giampaolo Bianchini, Astrid Kiermaier, Giulia Valeria Bianchi, Young-Hyuck Im, Tadeusz Pienkowski, Mei-Ching Liu, Ling-Ming Tseng, Mitch Dowsett, Lila Zabaglo, Sarah Kirk, Tania Szado, Jennifer Eng-Wong, Lukas C Amler, Pinuccia Valagussa, Luca Gianni
BACKGROUND: NeoSphere showed significantly higher pathologic complete response (pCR) with neoadjuvant pertuzumab, trastuzumab, and docetaxel compared with trastuzumab plus docetaxel, pertuzumab plus trastuzumab, or pertuzumab plus docetaxel. We assessed associations between human epidermal growth factor receptor 2 (HER2) pathway-related biomarkers and clinical outcome in response to these regimens. METHODS: Tumor, serum, and whole blood samples were collected at baseline and post neoadjuvant treatment before surgery...
February 9, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28179017/thymosin-beta-10-is-a-key-regulator-of-tumorigenesis-and-metastasis-and-a-novel-serum-marker-in-breast-cancer
#19
Xin Zhang, Dong Ren, Ling Guo, Lan Wang, Shu Wu, Chuyong Lin, Liping Ye, Jinrong Zhu, Jun Li, Libing Song, Huanxin Lin, Zhenyu He
BACKGROUND: Thymosin beta 10 (TMSB10) has been demonstrated to be involved in the malignant process of many cancers. The purpose of this study was to determine the biological roles and clinical significance of TMSB10 in breast cancer and to identify whether TMSB10 might be used as a serum marker for the diagnosis of breast cancer. METHODS: TMSB10 expression was evaluated by immunohistochemical analysis (IHC) of 253 breast tumors and ELISA of serum from 80 patients with breast cancer...
February 8, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28173872/childhood-body-size-and-pubertal-timing-in-relation-to-adult-mammographic-density-phenotype
#20
Minouk J Schoemaker, Michael E Jones, Steven Allen, Jean Hoare, Alan Ashworth, Mitch Dowsett, Anthony J Swerdlow
BACKGROUND: An earlier age at onset of breast development and longer time between pubertal stages has been implicated in breast cancer risk. It is not clear whether associations of breast cancer risk with puberty or predictors of onset of puberty, such as weight and height, are mediated via mammographic density, an important risk factor for breast cancer. METHODS: We investigated whether childhood body size and pubertal timing and tempo, collected by questionnaire, are associated with percentage and absolute area mammographic density at ages 47-73 years in 1105 women recruited to a prospective study...
February 7, 2017: Breast Cancer Research: BCR
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