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Breast cancer tumor markers

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https://www.readbyqxmd.com/read/29456740/an-obligatory-anaerobic-salmonella-typhimurium-strain-redirects-m2-macrophages-to-the-m1-phenotype
#1
Mei Yang, Juan Xu, Qi Wang, An-Qin Zhang, Kun Wang
A genetically engineered Salmonella typhimurium strain that may be applied in the medically useful therapeutic strategy of using bacterial agents to target breast cancer in a tumor-bearing nude mouse model has been previously reported. Furthermore, immune cell accumulation in breast tumor types has been observed, particularly distributed in regions surrounding the bacteria. M2 macrophages are associated with breast cancer aggressiveness, whereas M1 macrophages are prone to devouring bacteria and killing cancer cells...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456723/mir-96-promotes-breast-cancer-metastasis-by-suppressing-mtss1
#2
Wei Xie, Feng Sun, Lin Chen, Xinjian Cao
Novel, non-invasive biomarkers with high sensitivity and specificity are critical for breast cancer treatment, and prognosis. MicroRNA (miR)-96 has been demonstrated to be highly expressed in several solid malignancies, including breast cancer. However, its expression and function in the metastasis and prognosis of breast cancer have not been fully explored, and its regulation mechanisms remain unclear. In the present study, the serum miR-96 expression in healthy controls, benign and malignant breast cancer types was compared by using reverse transcription-quantitative polymerase chain reaction...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29453319/leptin-signaling-mediates-obesity-associated-csc-enrichment-and-emt-in-preclinical-tnbc-models
#3
Laura W Bowers, Emily L Rossi, Shannon B McDonell, Steven S Doerstling, Subreen A Khatib, Claire G Lineberger, Jody E Albright, Xiaohu Tang, Linda A deGraffenried, Stephen D Hursting
Obesity is associated with poor prognosis in triple-negative breast cancer (TNBC). Preclinical models of TNBC were used to test the hypothesis that increased leptin signaling drives obesity-associated TNBC development by promoting cancer stem cell (CSC) enrichment and/or epithelial-to-mesenchymal transition (EMT). MMTV-Wnt-1 transgenic mice, which develop spontaneous basal-like, triple-negative mammary tumors, received either a control diet (10% kcal from fat) or a diet-induced obesity regimen (DIO, 60% kcal from fat) for up to 42 weeks (n=15/group)...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29450494/comparison-of-the-performance-of-6-prognostic-signatures-for-estrogen-receptor-positive-breast-cancer-a-secondary-analysis-of-a-randomized-clinical-trial
#4
Ivana Sestak, Richard Buus, Jack Cuzick, Peter Dubsky, Ralf Kronenwett, Carsten Denkert, Sean Ferree, Dennis Sgroi, Catherine Schnabel, Frederick L Baehner, Elizabeth Mallon, Mitch Dowsett
Importance: Multiple molecular signatures are available for managing estrogen receptor (ER)-positive breast cancer but with little direct comparative information to guide the patient's choice. Objective: To conduct a within-patient comparison of the prognostic value of 6 multigene signatures in women with early ER-positive breast cancer who received endocrine therapy for 5 years. Design, Setting, and Participants: This retrospective biomarker analysis included 774 postmenopausal women with ER-positive ERBB2 (formerly HER2)-negative breast cancer...
February 15, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29444670/breast-cancer-in-ethiopia-evidence-for-geographic-difference-in-the-distribution-of-molecular-subtypes-in-africa
#5
Endale Hadgu, Daniel Seifu, Wondemagegnhu Tigneh, Yonas Bokretsion, Abebe Bekele, Markos Abebe, Thomas Sollie, Sofia D Merajver, Christina Karlsson, Mats G Karlsson
BACKGROUND: Breast cancer is a heterogeneous disease with several morphological and molecular subtypes. Widely accepted molecular classification system uses assessment of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and proliferation marker Ki67. Few studies have been conducted on the incidence and molecular types of breast cancer in Sub-Saharan Africa. Previous studies mainly from Western and Central Africa, showed breast cancer to occur at younger ages and to present with aggressive features, such as high-grade, advanced stage and triple-negative phenotype (negative for ER, PR and HER2)...
February 14, 2018: BMC Women's Health
https://www.readbyqxmd.com/read/29440915/effects-of-core-needle-biopsy-and-subsequent-neoadjuvant-chemotherapy-on-molecular-alterations-and-outcome-in-breast-cancer
#6
Lingmin Xie, Xiaolei Li, Qinchuan Wang, Jichun Zhou, Jun Shen, Lixi Luo, Yi Lu, Linbo Wang
Objectives: The aim of our study is to evaluate the effect of core needle biopsy (CNB) and subsequent neoadjuvant chemotherapy (NAC) on the expression of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth hormone receptor 2 (HER2) and Ki67 in breast cancer, and the associated influencing factors. Materials and methods: In this retrospective cohort study, 143 patients with primary operable breast cancer who received NAC were included. ER, PR, HER2 and Ki67 statuses were compared between pretreatment and posttreatment residual samples...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29440181/a-first-in-human-study-of-the-new-oral-selective-estrogen-receptor-degrader-azd9496-for-hr-her2-advanced-breast-cancer
#7
Erika P Hamilton, Manish R Patel, Anne C Armstrong, Richard D Baird, Komal Jhaveri, Matthias Hoch, Teresa Klinowska, Justin P O Lindemann, Shethah Morgan, Gaia Schiavon, Hazel M Weir, Seock-Ah Im
PURPOSE: AZD9496 is an oral non-steroidal, small-molecule inhibitor of estrogen receptor alpha (ERα), and a potent and selective antagonist and degrader of ERα. This first in human Phase 1 study determined the safety and tolerability of ascending doses of oral AZD9496 in women with estrogen receptor (ER)+/HER2- advanced breast cancer, characterized its pharmacokinetic (PK) profile, and made preliminary assessment of antitumor activity. EXPERIMENTAL DESIGN: Forty-five patients received AZD9496 (20 mg once daily to 600 mg twice daily) in a dose-escalation, dose- expansion 'rolling 6' design...
February 13, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29440175/pan-cancer-molecular-classes-transcending-tumor-lineage-across-32-cancer-types-multiple-data-platforms-and-over-10-000-cases
#8
Chad J Creighton, Fengju Chen, Yiqun Zhang, Don L Gibbons, Benjamin Deneen, David Kwiatkowski, Michael Ittmann
PURPOSE: The Cancer Genome Atlas data resources represent an opportunity to explore commonalities across cancer types involving multiple molecular levels, but tumor lineage and histology can represent a barrier in moving beyond differences related to cancer type. EXPERIMENTAL DESIGN: On the basis of gene expression data, we classified 10224 cancers, representing 32 major types, into ten molecular-based "classes."  Molecular patterns representing tissue or histologic dominant effects were first removed computationally, with the resulting classes representing emergent themes across tumor lineages...
February 9, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29439678/correlation-between-global-methylation-level-of-peripheral-blood-leukocytes-and-serum-c-reactive-protein-level-modified-by-mthfr-polymorphism-a-cross-sectional-study
#9
Masanori Nojima, Motoki Iwasaki, Yoshio Kasuga, Shiro Yokoyama, Hiroshi Onuma, Hideki Nishimura, Ritsu Kusama, Teruhiko Yoshida, Shoichiro Tsugane
BACKGROUND: Chronic inflammatory conditions are associated with higher tumor incidence through epigenetic and genetic alterations. Here, we focused on an association between an inflammation marker, C-reactive-protein (CRP), and global DNA methylation levels of peripheral blood leukocytes. METHODS: The subjects were 384 healthy Japanese women enrolled as the control group of a case-control study for breast cancer conducted from 2001 to 2005. Global DNA methylation was quantified by Luminometric Methylation Assay (LUMA)...
February 13, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29438472/klinefelter-syndrome-integrating-genetics-neuropsychology-and-endocrinology
#10
Claus H Gravholt, Simon Chang, Mikkel Wallentin, Jens Fedder, Philip Moore, Anne Skakkebæk
Although first identified over 70 years ago, Klinefelter syndrome (KS) continue to pose significant diagnostic challenges, as many patients are still misdiagnosed, or remain undiagnosed. In fact, as few as 25% of KS patients are accurately diagnosed, and most of these diagnoses are not made until adulthood. Classic characteristics of KS include small testes, infertility, hypergonadothropic hypogonadism, and cognitive impairment. However, the pathophysiology behind KS is not well understood, although genetic effects are also thought to play a role...
February 9, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29437878/essential-role-of-polo-like-kinase-1-plk1-oncogene-in-tumor-growth-and-metastasis-of-tamoxifen-resistant-breast-cancer
#11
Sung Baek Jeong, Ji Hye Im, Jeong-Hoon Yoon, Quyen Thu Bui, Sung Chul Lim, Joon Myong Song, Yumi Shim, Jieun Yun, Janghee Hong, Keon Wook Kang
The most common therapy for estrogen receptor-positive breast cancer is anti-hormone therapy such as tamoxifen (TAM). However, acquisition of resistance to TAM in one-third of patients presents a serious clinical problem. Polo-like kinase 1 (Plk1) is a key oncogenic regulator of completion of G2/M phase of the cell cycle. We assessed Plk1 expression in five chemoresistant cancer cell types and found that Plk1 and its downstream phosphatase Cdc25c were selectively overexpressed in TAM-resistant MCF-7 (TAMR-MCF-7) breast cancer cells...
February 7, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29437708/expression-of-adipocyte-macrophage-fatty-acid-binding-protein-in-tumor-associated-macrophages-promotes-breast-cancer-progression
#12
Jiaqing Hao, Fei Yan, Yuwen Zhang, Ashley Triplett, Ying Zhang, Debra A Schultz, Yanwen Sun, Jun Zeng, Kevin A T Silverstein, Qi Zheng, David A Bernlohr, Margot P Cleary, Nejat K Egilmez, Edward Sauter, Shujun Liu, Jill Suttles, Bing Li
Tumor associated macrophages (TAM) play a critical role in cancer development and progression. However, the heterogeneity of TAM presents a major challenge to identify clinically-relevant markers for pro-tumor TAM. Here, we report that expression of adipocyte/macrophage fatty acid binding protein (A-FABP) in TAM promotes breast cancer progression. While upregulation of A-FABP was inversely associated with breast cancer survival, deficiency of A-FABP significantly reduced mammary tumor growth and metastasis...
February 6, 2018: Cancer Research
https://www.readbyqxmd.com/read/29436685/anti-angiogenic-and-pro-apoptotic-effects-of-a-small-molecule-jfd-ws-in-in-vitro-and-breast-cancer-xenograft-mouse-models
#13
Appu Rathinavelu, Thanigaivelan Kanagasabai, Sivanesan Dhandayuthapani, Khalid Alhazzani
A small molecule that was developed for blocking vascular endothelial growth factor receptor 2 (VEGFR2) has been tested and confirmed for its anti-angiogenic activity. Subsequently, it was modified into a water soluble salt form (JFD-WS) to increase bioavailability and distribution during in vivo pre-clinical testing. The present study was designed to further evaluate the anti-angiogenic and pro-apoptotic effects of JFD-WS in monotherapy as well as in combination with paclitaxel (Taxol) using a mouse xenograft model...
February 9, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29435821/7-8-dihydroxycoumarin-exerts-antitumor-potential-on-dmba-induced-mammary-carcinogenesis-by-inhibiting-er%C3%AE-pr-egfr-and-igf1r-involvement-of-mapk1-2-jnk1-2-akt-pathway
#14
Abhishek Kumar, Priyashree Sunita, Shivesh Jha, Shakti P Pattanayak
Breast cancer (BC) is a persistent and impulsive metabolic disorder with the highest prevalence in women, worldwide. 7,12-Dimethylbenz(a)anthracene (DMBA) is a potent polyaromatic hydrocarbon (PAH)-based carcinogen producing mammary carcinomas in rats resembling the human hormone-dependent BC. 7,8-Dihydroxycoumarin (78DC) is a coumarin derivative that possesses diversified and favorable pharmacology profile to be considered in anticancer research against various malignancies. The present study was intended to investigate the antiproliferative and chemotherapeutic potentials of 78DC (20, 40, and 80 mg/kg BW) against DMBA (20 mg in olive oil)-induced mammary carcinoma Sprague-Dawley rats...
February 12, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29435805/kallikrein-related-peptidase-6-klk6-expression-differentiates-tumor-subtypes-and-predicts-clinical-outcome-in-breast-cancer-patients
#15
Christoforos Haritos, Kleita Michaelidou, Konstantinos Mavridis, Ioannis Missitzis, Alexandros Ardavanis, John Griniatsos, Andreas Scorilas
Novel molecular markers that address the heterogeneity of breast cancer (BC) and provide meaningful prognostic information for BC patients are needed. Kallikrein-related peptidase 6 (KLK6) is aberrantly expressed and functionally implicated in BC and, like other members of the KLK family, may prove a useful molecular tool for clinical management. Our objective was to assess, for the first time, the clinical relevance of KLK6 mRNA expression in BC. Total RNA was isolated from 165 breast tumors, as well as 100 adjacent non-cancerous tumor specimens...
February 12, 2018: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/29435153/heterotypic-breast-cancer-model-based-on-a-silk-fibroin-scaffold-to-study-the-tumor-microenvironment
#16
Ewelina Dondajewska, Wojciech Juzwa, Andrzej Mackiewicz, Hanna Dams-Kozlowska
An intensive investigation of the development of in vitro models to study tumor biology has led to the generation of various three-dimensional (3D) culture methods that better mimic in vivo conditions. The tumor microenvironment (TME) is shaped by direct interactions among cancer cells, cancer-associated cells and the extracellular matrix (ECM). Recognizing the need to incorporate both tissue dimensionality and the heterogeneity of cells, we have developed a 3D breast cancer model. NIH3T3 fibroblasts and EMT6 breast cancer cell lines were seeded in various ratios onto a silk fibroin scaffold...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29435006/prl-3-promotes-breast-cancer-progression-by-downregulating-p14arf-mediated-p53-expression
#17
Hua Xie, Hao Wang
Prior studies have demonstrated that phosphatase of regenerating liver-3 (PRL-3) serves avital function in cell proliferation and metastasis in breast cancer. However, the molecular mechanisms underlying the function of PRL-3 in breast cancer remain unknown. PRL-3 expression was analyzed in 24 pairs of breast cancer and normal tissues using the reverse transcription-quantitative polymerase chain reaction assay. The results of the present study identified that the expression of PLR-3 in breast cancer tissues was increased 4...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434968/characterization-of-circulating-tumor-cells-in-newly-diagnosed-breast-cancer
#18
Lu Xu, Songlin Jia, Hengyu Li, Yue Yu, Guoping Liu, Yanmei Wu, Xishui Liu, Chaoqian Liu, Yue Zhou, Zhenzhen Zhang, Yuan Sheng
Identification of circulating tumor cells (CTCs) by surface marker expression and ploidy analysis [immunostaining-fluorescence in situ hybridization (iFISH)] has been shown to be a highly sensitive method in the identification of certain solid cancers. In the present study, iFISH analysis was performed to identify CTCs in 184 patients with newly diagnosed non-metastatic breast cancer, and the distribution of CTC subtypes was characterized based on cytokeratin (CK) expression and ploidy status. It was revealed that CTCs of non-metastatic, aneuploid breast cancers, independent of CK expression profile, can be detected with high sensitivity (90...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434955/association-between-lysyl-oxidase-and-fibrotic-focus-in-relation-with-inflammation-in-breast-cancer
#19
Young Ju Jeong, Sung Hwan Park, Sung Hee Mun, Sang Gyu Kwak, Sun-Jae Lee, Hoon Kyu Oh
We hypothesized that lysyl oxidase (LOX) contributes to the formation of fibrotic focus (FF) in association with inflammation and serves a significant role in breast carcinogenesis. In the present study, the association between the expression of LOX family members and FF with regards to with inflammation was analyzed, and the prognostic significance of LOX and FF in breast cancer was investigated. Immunohistochemical staining for LOX, LOX-like protein (LOXL) 1, LOXL2 and LOXL3 was performed in primary breast cancer tissues...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434943/mechanism-of-anticancer-action-of-novel-berenil-complex-of-platinum-ii-combined-with-anti-muc1-in-mcf-7-breast-cancer-cells
#20
Agnieszka Gornowicz, Anna Bielawska, Wojciech Szymanowski, Halina Gabryel-Porowska, Robert Czarnomysy, Krzysztof Bielawski
Mucin 1 (MUC1) is a high molecular weight transmembrane glycoprotein, that is overexpressed in >90% of breast cancers. It serves a crucial role in anti-apoptosis and tumor progression. MUC1 interacts with proteins in the extracellular matrix, at the cell membrane, in the cytoplasm and in the nucleus. The aim of the present study was to investigate the mechanism of anticancer action induced by novel berenil complex of platinum(II) (Pt12) together with a monoclonal antibody against MUC1 in breast cancer MCF-7 cells...
February 2018: Oncology Letters
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