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https://www.readbyqxmd.com/read/29341321/interleukin-6-contributes-to-chemoresistance-in-mda-mb-231-cells-via-targeting-hif-1%C3%AE
#1
Ke Wang, Xue Zhu, Kai Zhang, Yongxiang Yin, Yu Chen, Ting Zhang
Chemoresistance is a critical challenge in the clinical treatment of triple-negative breast cancer (TNBC). It has been well documented that inflammatory mediators from tumor microenvironment are involved in the pathogenesis of TNBC and might be related to chemoresistance of cancer cells. In this study, the contribution of interleukin-6 (IL-6), one of the principal oncogenic molecules, in chemoresistance of a TNBC cell line MDA-MB-231 was first investigated. The results showed that IL-6 treatment could induce upregulation of HIF-1α via the activation of STAT3 in MDA-MB-231 cells, which consequently contributed to its effect against chemotherapeutic drug-induced cytotoxicity and cell apoptosis...
January 17, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29341047/german-guideline-for-idiopathic-pulmonary-fibrosis-update-on-pharmacological-therapies-2017
#2
Jürgen Behr, Andreas Günther, Francesco Bonella, Klaus Geißler, Dirk Koschel, Michael Kreuter, Antje Prasse, Nicolas Schönfeld, Helmut Sitter, Joachim Müller-Quernheim, Ulrich Costabel
Idiopathic pulmonary fibrosis (IPF) is a severe and often fatal disease with a median survival of 2 - 4 years after diagnosis. Since the publication of the German IPF guideline in 2013 new treatment trials have been published, necessitating an update of the pharmacological therapy of IPF. Different from the previous guideline, the GRADE system was discarded and replaced by the Oxford evidence classification system which allows a more differentiated judgement. The following pharmacological therapies were rated not suitable for the treatment of IPF patients (recommendation A; evidence 1-b): triple therapy with prednisolone, azathioprine and acetyl-cysteine; imatinib; ambrisentan; bosentan; macitentan...
January 16, 2018: Pneumologie
https://www.readbyqxmd.com/read/29340907/harnessing-a-different-dependency-how-to-identify-and-target-androgen-receptor-positive-versus-quadruple-negative-breast-cancer
#3
REVIEW
Jessica L Christenson, Jane B Trepel, Haythem Y Ali, Sunmin Lee, Joel R Eisner, Edwina S Baskin-Bey, Anthony D Elias, Jennifer K Richer
The androgen receptor (AR) is a promising therapeutic target for a subset of triple-negative breast cancers (TNBCs) in which AR is expressed. However, the mechanistic action of AR and the degree to which primary and metastatic tumors depend on AR, both before and after conventional treatment, remain to be defined. We discuss preclinical and clinical data for AR+ TNBC, the difficulties in monitoring AR protein levels, new methods for determining AR status, the influence of AR on "stemness" in the context of TNBC, the role of combined inhibition of sex steroid production and AR, and the role of AR in regulation of the immune system...
January 16, 2018: Hormones & Cancer
https://www.readbyqxmd.com/read/29340880/gata-3-is-superior-to-gcdfp-15-and-mammaglobin-to-identify-primary-and-metastatic-breast-cancer
#4
Yun-Bi Ni, Julia Y S Tsang, Mu-Min Shao, Siu-Ki Chan, Sai-Yin Cheung, Joanna Tong, Ka-Fai To, Gary M Tse
PURPOSE: Despite numerous studies on the utility of GATA-3 as breast cancer marker, its comparison with other breast markers, its concordance between primary and metastatic tumors and its expression in primary cancers from sites with frequent breast metastases remains unclear. METHODS: To address these questions, totally 993 invasive breast cancers (IBC), 254 paired nodal metastases, 23 distant metastases, and 208 lung carcinomas were included. GATA-3 expression was analyzed by immunohistochemistry and compared to other breast markers [gross cystic disease fluid protein 15 (GCDFP-15) and mammaglobin (MGB)]...
January 16, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29340027/dual-sirt1-expression-patterns-strongly-suggests-its-bivalent-role-in-human-breast-cancer
#5
Khaldoun Rifaï, Gaëlle Judes, Mouhamed Idrissou, Marine Daures, Yves-Jean Bignon, Frédérique Penault-Llorca, Dominique Bernard-Gallon
Breast cancer is the most common cancer in women, and the leading cause of cancer death in women worldwide. SIRT1 (silent mating type information regulation 2 homolog) 1 is a class-III histone deacetylase involved in apoptosis regulation, DNA repair and tumorigenesis. However, its role in breast carcinoma remains controversial, as both tumor-suppressive and tumor-promoting functions have been reported. Also, there are very few reports available where expression of SIRT1 is comprehensively analyzed in breast tumors classified by molecular subtype...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339815/mcl-1-is-a-prognostic-indicator-and-drug-target-in-breast-cancer
#6
Kirsteen J Campbell, Sandeep Dhayade, Nicola Ferrari, Andrew H Sims, Emma Johnson, Susan M Mason, Ashley Dickson, Kevin M Ryan, Gabriela Kalna, Joanne Edwards, Stephen G W Tait, Karen Blyth
Analysis of publicly available genomic and gene expression data demonstrates that MCL1 expression is frequently elevated in breast cancer. Distinct from other pro-survival Bcl-2 family members, the short half-life of MCL-1 protein led us to investigate MCL-1 protein expression in a breast cancer tissue microarray and correlate this with clinical data. Here, we report associations between high MCL-1 and poor prognosis in specific subtypes of breast cancer including triple-negative breast cancer, an aggressive form that lacks targeted treatment options...
January 16, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29339325/induction-of-anti-agrin-antibodies-causes-myasthenia-gravis-in-mice
#7
Min Yan, Ziyang Liu, Erkang Fei, Wenbing Chen, Xinsheng Lai, Bin Luo, Peng Chen, Hongyang Jing, Jin-Xiu Pan, Michael H Rivner, Wen-Cheng Xiong, Lin Mei
Myasthenia gravis (MG) is an autoimmune disorder ofthe neuromuscular junction (NMJ). Most cases of MG are caused by autoantibodies against the acetylcholine receptor (AChR),muscle-specific kinase (MuSK) and low-density lipoprotein receptor-related protein 4 (LRP4). Recent studies have identified anti-agrin antibodies in MG patients lacking these three antibodies (i.e., triple negative MG). Agrin is a basal lamina protein that has two isoforms. Neural agrin (N-agrin) binds to LRP4 to activate MuSK to induce AChR clusters and is thus critical for NMJ formation...
January 12, 2018: Neuroscience
https://www.readbyqxmd.com/read/29339084/mir-613-inhibits-cell-migration-and-invasion-by-downregulating-daam1-in-triple-negative-breast-cancer
#8
Huaping Xiong, Ting Yan, Weijie Zhang, Fangfang Shi, Xuesong Jiang, Xiaohua Wang, Shoushan Li, Ying Chen, Cheng Chen, Yichao Zhu
Dishevelled-associated activator of morphogenesis 1 (Daam1) is a formin protein and participates in regulating cell migration of triple-negative breast cancer (TNBC) cells. The specific miRNA targeting Daam1 and mediating cell migration and invasion remains obscure. This experiment investigated the suppressive role of miR-613 in TNBC cells. The luciferase activity of Daam1 3'-untranslated region (3'-UTR) based reporters constructed in HEK-293T and MCF-7 cells suggested that Daam1 was the target gene of miR-613...
January 12, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29337092/germline-brca-mutation-and-outcome-in-young-onset-breast-cancer-posh-a-prospective-cohort-study
#9
Ellen R Copson, Tom C Maishman, Will J Tapper, Ramsey I Cutress, Stephanie Greville-Heygate, Douglas G Altman, Bryony Eccles, Sue Gerty, Lorraine T Durcan, Louise Jones, D Gareth Evans, Alastair M Thompson, Paul Pharoah, Douglas F Easton, Alison M Dunning, Andrew Hanby, Sunil Lakhani, Ros Eeles, Fiona J Gilbert, Hisham Hamed, Shirley Hodgson, Peter Simmonds, Louise Stanton, Diana M Eccles
BACKGROUND: Retrospective studies provide conflicting interpretations of the effect of inherited genetic factors on the prognosis of patients with breast cancer. The primary aim of this study was to determine the effect of a germline BRCA1 or BRCA2 mutation on breast cancer outcomes in patients with young-onset breast cancer. METHODS: We did a prospective cohort study of female patients recruited from 127 hospitals in the UK aged 40 years or younger at first diagnosis (by histological confirmation) of invasive breast cancer...
January 11, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29336717/pd1-protein-expression-in-tumor-infiltrated-lymphocytes-rather-than-pdl1-in-tumor-cells-predicts-survival-in-triple-negative-breast-cancer
#10
Xinyu Ren, Huanwen Wu, Junliang Lu, Yuhan Zhang, Yufeng Luo, Qianqian Xu, Songjie Shen, Zhiyong Liang
ABASTRACT To determine PD1/PDL1 expression status in triple-negative breast cancer (TNBC) at both protein and mRNA levels, and to analyze the relationship between their expression and clinical parameters of the TNBC patients. Immunohistochemistry and RNAscope were used to semi quantitively evaluate PD1/PDL1 protein and mRNA expression in 195 TNBC cases on tissue microarrays. Tumor infiltrating lymphocyte (TILs) abundance was assessed using hematoxylin-eosin staining.Both tumor cells and TILs expressed PDL1...
January 16, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29336662/body-mass-index-in-her2-negative-metastatic-breast-cancer-treated-with-first-line-paclitaxel-and-bevacizumab
#11
Laura Pizzuti, Domenico Sergi, Isabella Sperduti, Luigi Di Lauro, Marco Mazzotta, Claudio Botti, Fiorentino Izzo, Luca Marchetti, Silverio Tomao, Paolo Marchetti, Clara Natoli, Antonino Grassadonia, Teresa Gamucci, Lucia Mentuccia, Emanuela Magnolfi, Angela Vaccaro, Alessandra Cassano, Ernesto Rossi, Andrea Botticelli, Valentina Sini, Maria G Sarobba, Maria Agnese Fabbri, Luca Moscetti, Antonio Astone, Andrea Michelotti, Claudia De Angelis, Ilaria Bertolini, Francesco Angelini, Gennaro Ciliberto, Marcello Maugeri-Saccà, Antonio Giordano, Maddalena Barba, Patrizia Vici
The evidence emerged from the TOURANDOT trial encourages evaluating the role of anthropometric determinants on treatment outcomes in HER2-negative metastatic breast cancer patients treated with bevacizumab-including regimens. We thus analyzed data from a subgroup of these patients from a larger cohort previously assessed for treatment outcomes. Patients were included in the present analysis if body mass index values had been recorded at baseline. Clinical benefit rates, progression free survival and overall survival were assessed for the overall study population and subgroups defined upon molecular subtype...
January 16, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29336321/epstein-barr-virus-and-invasive-mammary-carcinomas-ebna-ebers-and-molecular-profile-in-a-population-of-west-algeria
#12
Radia Yahia, Chahinez Zaoui, Wafaa Derbale, Hafsa Boudi, Yahia Chebloune, Tewfik Sahraoui, Fatima Zohra Elkebir
Breast cancer is the common malignancy that affects women worldwide, but conventional risk factors account for only a small proportion of these cases. A possible viral etiology for breast cancer has been proposed and Epstein-Barr virus (EBV) is a widely studied candidate virus. The objective of this study is to determine the association of EBV infection with infiltrating ductal carcinomas (IDC). This descriptive study was carried out in the laboratory of developmental biology and differentiation, from 2012 to 2014...
January 16, 2018: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/29335924/brca1-and-brca2-germline-variants-in-breast-cancer-patients-from-the-republic-of-macedonia
#13
Milena Jakimovska, Ivana Maleva Kostovska, Katerina Popovska-Jankovic, Katerina Kubelka-Sabit, Mitko Karadjozov, Liljana Stojanovska, Andreja Arsovski, Snezhana Smichkoska, Emilija Lazarova, Maja Jakimovska Dimitrovska, Dijana Plaseska-Karanfilska
PURPOSE: We aimed to establish the spectrum of BRCA1/2 mutations among the breast cancer (BC) patients from the Republic of Macedonia. METHODS: We used targeted next-generation sequencing (NGS), Sanger DNA sequencing, and multiplex ligation probe amplification analysis (MLPA) to search for point mutations and deletions/duplications involving BRCA1 and BRCA2-coding regions. RESULTS: We have analyzed a total of 313 BC patients, enriched for family history of cancer, early age of onset and bilateral and/or triple negative (TN) BC...
January 15, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29334914/-crying-without-tears-as-an-early-diagnostic-sign-post-of-triple-a-allgrove-syndrome-two-case-reports
#14
Daniel Tibussek, Sujal Ghosh, Angela Huebner, Joerg Schaper, Ertan Mayatepek, Katrin Koehler
BACKGROUND: Triple A syndrome (or Allgrove syndrome) is a rare autosomal recessive disorder characterized by alacrima, achalasia, adrenal insufficiency and autonomic/neurological abnormalities. The majority of cases are caused by mutations in the AAAS gene located on chromosome 12q13. However, the clinical picture as well as genetic testing may be complex since symptomatology is variable and mutations cannot be identified in all clinically diagnosed patients. We present two unrelated patients with triple-A syndrome illustrating the importance of alacrima as an early clinical sign...
January 15, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29334665/i-7ab-inhibited-the-growth-of-tnbc-cells-via-targeting-hdac3-and-promoting-the-acetylation-of-p53
#15
Mei Yang, Xuefei Dang, Yue Tan, Meixing Wang, Xiaojing Li, Gang Li
Triple negative breast cancer (TNBC) is a heterogenous disease with high aggressive and poor outcome. The lack of biomarkers and targeted therapies makes it a challenge for the treatment of TNBC. Histone deacetylase inhibitors (HDACis) are emerging as novel anti-tumor agents in many types of human cancers. In this study, we found that I-7ab, a novel HDACi, inhibited the cell viability of TNBC cells and induced the cell apoptosis. Mechanistically, I-7ab specifically decreased the expression of HDAC3 and promoted the acetylation of p53 at both Lys373 and Lys382 amino acids...
January 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29334604/breast-conservation-therapy-versus-mastectomy-in-patients-with-t1-2n1-triple-negative-breast-cancer-pooled-analysis-of-krog-14-18-and-14-23
#16
Kyubo Kim, Hae Jin Park, Kyung Hwan Shin, Jin Ho Kim, Doo Ho Choi, Won Park, Seung Do Ahn, Su Ssan Kim, Dae Yong Kim, Tae Hyun Kim, Jin Hee Kim, Jiyoung Kim
Purpose: The aim of this study is to compare the treatment outcomes of breast conserving surgery (BCS) plus radiotherapy (RT) vs. mastectomy for patients with pT1-2N1 triple negative breast cancer (TNBC). Methods: Using two multicenter retrospective studies on breast cancer, a pooled analysis was performed among 320 patients with pT1-2N1 TNBC. All patients who underwent BCS (n=212) received whole breast RT with or without regional nodal RT, while none who underwent mastectomy (n=108) received it...
January 8, 2018: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29333926/engrailed-1-overexpression-as-a-potential-prognostic-marker-in-quintuple-negative-breast-cancer
#17
Yu Jin Kim, Minjung Sung, Ensel Oh, Michael Van Vrancken, Ji-Young Song, Kyungsoo Jung, Yoon-La Choi
Triple-negative breast cancer (TNBC) is an aggressive breast cancer subtype characterized by poor patient prognosis and for which no targeted therapies are currently available. TNBC can be further categorized as either basal-like (BLBC) or quintuple-negative breast cancer (QNBC). In the present study, we aimed to identify novel molecular therapeutic targets for TNBC by analyzing the mRNA expression of TNBC-related genes in publicly available microarray data sets. We found that Engrailed 1 (EN1) was significantly overexpressed in TNBC...
January 15, 2018: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29333607/arabidopsis-mlo2-is-a-negative-regulator-of-sensitivity-to-extracellular-ros
#18
Fuqiang Cui, Hongpo Wu, Omid Safronov, Panpan Zhang, Rajeev Kumar, Hannes Kollist, Jarkko Salojärvi, Ralph Panstruga, Kirk Overmyer
The atmospheric pollutant ozone (O3 ) is a strong oxidant that causes extracellular reactive oxygen species (ROS) formation, has significant ecological relevance, and is used here as a non-invasive ROS inducer to study plant signalling. Previous genetic screens identified several mutants exhibiting enhanced O3- sensitivity, but few with enhanced tolerance. We found that loss-of-function mutants in Arabidopsis MLO2, a gene implicated in susceptibility to powdery mildew disease, exhibit enhanced dose-dependent tolerance to O3 and extracellular ROS, but a normal response to intracellular ROS...
January 15, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29333087/antioxydation-and-cell-migration-genes-are-identified-as-potential-therapeutic-targets-in-basal-like-and-brca1-mutated-breast-cancer-cell-lines
#19
Maud Privat, Justine Rudewicz, Nicolas Sonnier, Christelle Tamisier, Flora Ponelle-Chachuat, Yves-Jean Bignon
Basal-like breast cancers are among the most aggressive cancers and effective targeted therapies are still missing. In order to identify new therapeutic targets, we performed Methyl-Seq and RNA-Seq of 10 breast cancer cell lines with different phenotypes. We confirmed that breast cancer subtypes cluster the RNA-Seq data but not the Methyl-Seq data. Basal-like tumor hypermethylated phenotype was not confirmed in our study but RNA-Seq analysis allowed to identify 77 genes significantly overexpressed in basal-like breast cancer cell lines...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29333017/correlation-of-hormone-receptor-and-human-epidermal-growth-factor-receptor-2-neu-expression-in-breast-cancer-with-various-clinicopathologic-factors
#20
Cherry Bansal, Aarti Sharma, Mukta Pujani, Meenu Pujani, Kiran Lata Sharma, A N Srivastava, U S Singh
Background: A significant development in the breast carcinoma management is the correlation between the presence of hormone receptors in the tumor and response to hormonal therapy and chemotherapy. Human epidermal growth factor receptor-2/neu (Her-2/neu) overexpression also serves as a very useful parameter to predict response to herceptin. Aim of Study: The study was conducted to correlate immunohistochemical expression of markers such as estrogen receptor (ER), progesterone receptor (PR), and Her-2/neu with various clinicopathologic parameters...
October 2017: Indian Journal of Medical and Paediatric Oncology
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