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https://www.readbyqxmd.com/read/28346100/robotic-mammosphere-assay-for-high-throughput-screening-in-triple-negative-breast-cancer
#1
P A Fitzpatrick, N Akrap, E M V Söderberg, H Harrison, G J Thomson, G Landberg
In order to identify novel treatment principles specifically affecting cancer stem cells in triple-negative breast cancer, we have developed a high-throughput screening method based on the mammosphere and anoikis resistance assays allowing us to screen compounds using a functional readout. The assay was validated against manual protocols and through the use of positive controls, such as the response to hypoxia and treatment with the known cancer stem cell-targeting compound salinomycin. Manual and robotic procedures were compared and produced similar results in cell handling, cell cultures, and counting techniques, with no statistically significant difference produced from either method...
February 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28345871/in-vivo-targeting-and-positron-emission-tomography-imaging-of-tumor-with-intrinsically-radioactive-metal-organic-frameworks-nanomaterials
#2
Daiqin Chen, Dongzhi Yang, Casey Dougherty, Weifei Lu, Hongwei Wu, Xianran He, Ting Cai, Marcian E Van Dort, Brian D Ross, Hao Hong
Nanoscale metal-organic frameworks (nMOF) materials represent an attractive tool for various biomedical applications. Due to the chemical versatility, enormous porosity, and tunable degradability of nMOFs, they have been adopted as carriers for delivery of imaging and/or therapeutic cargos. However, the relatively low stability of most nMOFs has limited practical in vivo applications. Here we report the production and characterization of an intrinsically radioactive UiO-66 nMOF (89Zr-UiO-66) with incorporation of positron-emitting isotope zirconium-89 (89Zr)...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345838/ercc1-expression-in-metastatic-triple-negative-breast-cancer-patients-treated-with-platinum-based-chemotherapy
#3
Mohamed Ali EL Baiomy, Wagdi F El Kashef
Background: Possible targeted therapies for metastatic triple negative breast cancer (TNBC) include cytotoxic chemotherapy that causes interstrand breaks (platinum-based drugs). The excision repair cross-complementation 1 (ERCC1) enzyme plays an essential role in the nucleotide excision repair pathway, removing platinum-induced DNA adducts and contributing to cisplatin resistance. Detecting ERCC1 overexpression is important in considering treatment options for metastatic TNBC, including individualized approaches to therapy, and may facilitate improved responses or reduction of unnecessary toxicity...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28344858/nab-paclitaxel-for-the-treatment-of-breast-cancer-an-update-across-treatment-settings
#4
REVIEW
Adam Brufsky
PURPOSE: The purpose of this systematic review is to discuss recent studies and ongoing trials of nab-paclitaxel in breast cancer and to examine the potential role of nab-paclitaxel as a backbone for immuno-oncology therapies. METHODS: PubMed and selected congress proceedings were searched for studies of nab-paclitaxel in breast cancer published between 2013 and 2015. All phase II and III clinical trials, retrospective analyses, and institutional studies were included...
2017: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/28343970/phenylmethimazole-and-a-thiazole-derivative-of-phenylmethimazole-inhibit-il-6-expression-by-triple-negative-breast-cancer-cells
#5
Mahboubeh S Noori, John D O'Brien, Zachary J Champa, Sudhir P Deosarkar, Olivia L Lanier, Chunyan Qi, Monica M Burdick, Frank L Schwartz, Stephen C Bergmeier, Kelly D McCall, Douglas J Goetz
Inhibition of interleukin-6 (IL-6) holds significant promise as a therapeutic approach for triple negative breast cancer (TNBC). We previously reported that phenylmethimazole (C10) reduces IL-6 expression in several cancer cell lines. We have identified a more potent derivative of C10 termed COB-141. In the present work, we tested the hypothesis that C10 and COB-141 inhibit TNBC cell expressed IL-6 and investigated the potential for classical IL-6 pathway induced signaling within TNBC cells. A panel of TNBC cell lines (MDA-MB-231, Hs578T, MDA-MB-468) was used...
March 23, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28343309/breast-cancer-detection-and-tumor-characteristics-in-brca1-and-brca2-mutation-carriers
#6
Julia Krammer, Katja Pinker-Domenig, Mark E Robson, Mithat Gönen, Blanca Bernard-Davila, Elizabeth A Morris, Debra A Mangino, Maxine S Jochelson
PURPOSE: To describe imaging findings, detection rates, and tumor characteristics of breast cancers in a large series of patients with BRCA1 and BRCA2 mutations to potentially streamline screening strategies. METHODS: An IRB-approved, HIPAA-compliant retrospective analysis of 496 BRCA mutation carriers diagnosed with breast carcinoma from 1999 to 2013 was performed. Institutional database and electronic medical records were reviewed for mammography and MRI imaging...
March 25, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28341031/surveillance-of-women-with-a-personal-history-of-breast-cancer-by-tumour-subtype
#7
A P Benveniste, M J Dryden, I Bedrosian, P K Morrow, R L Bassett, W Yang
AIM: To determine if the rate and timing of a second breast cancer event (SBCE) in women with a personal history of breast cancer varies by disease subtype or breast imaging method. MATERIALS AND METHODS: A retrospective review was performed of women with a SBCE from January 2006 to December 2010 at a single institution. Data analysed included oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status of the primary and second breast cancers; mammographic and ultrasound (US) features from SBCE; and the time interval between both events...
March 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28338932/ursolic-acid-derivative-fzu-03-010-inhibits-stat3-and-induces-cell-cycle-arrest-and-apoptosis-in-renal-and-breast-cancer-cells
#8
Wei Li, Hongxiu Zhang, Mingxiu Nie, Yanlei Tian, Xu Chen, Ceshi Chen, Haijun Chen, Rong Liu
Advanced renal cell carcinoma and triple negative breast cancer (TNBC) are malignancies without effective therapeutics currently. Ursolic acid (UA) has been previously reported to have anti-cancer effects in multiple solid tumors. In order to develop more potent anti-cancer reagents, FZU-03,010 based on the chemical structure of UA were synthesized. The results demonstrated that, compared with UA, FZU-03,010 could suppress renal cancer cell 786-0 and TNBC cell HCC1806 cell viability more potently.  Furthermore, FZU-03,010 could induce G1 cell cycle arrest and cell apoptosis more efficiently than UA...
March 2, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28337998/circulating-tumor-cell-status-monitors-the-treatment-responses-in-breast-cancer-patients-a-meta-analysis
#9
Wen-Ting Yan, Xiang Cui, Qing Chen, Ya-Fei Li, You-Hong Cui, Yan Wang, Jun Jiang
Whether circulating tumor cells (CTCs) can be used as an indicator of treatment response in breast cancer (BC) needs to be clarified. We addressed this issue by a meta-analysis. PubMed, EMBase and Cochrane library databases were searched in June 2016. Effect measures were estimated as pooled risk ratio (RR), odds ratio (OR) or mean difference by fixed- or random-effect models, according to heterogeneity of included studies. In total, 50 studies with 6712 patients were recruited. Overall analysis showed that there was a significant reduction of CTC-positive rate (RR = 0...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337968/crispr-cas9-mutagenesis-invalidates-a-putative-cancer-dependency-targeted-in-on-going-clinical-trials
#10
Ann Lin, Christopher J Giuliano, Nicole M Sayles, Jason M Sheltzer
The Maternal Embryonic Leucine Zipper Kinase (MELK) has been reported to be a genetic dependency in several cancer types. MELK RNAi and small-molecule inhibitors of MELK block the proliferation of various cancer cell lines, and MELK knockdown has been described as particularly effective against the highly-aggressive basal/triple-negative subtype of breast cancer. Based on these preclinical results, the MELK inhibitor OTS167 is currently being tested as a novel chemotherapy agent in several clinical trials. Here, we report that mutagenizing MELK with CRISPR/Cas9 has no effect on the fitness of basal breast cancer cell lines or cell lines from six other cancer types...
March 24, 2017: ELife
https://www.readbyqxmd.com/read/28337954/clinical-value-of-capecitabine-based-combination-adjuvant-chemotherapy-in-early-breast-cancer-a-meta-analysis-of-randomized-controlled-trials
#11
Guanling Chen, Zhaoze Guo, Minfeng Liu, Guangyu Yao, Jianyu Dong, Jingyun Guo, Changsheng Ye
Capecitabine has consistently demonstrated high efficacy and acceptable tolerability in salvage chemotherapy for advanced breast cancer. However, there remains no consensus on its role in adjuvant chemotherapy for early breast cancer (EBC). To estimate the value of capecitabine-based combination adjuvant treatment in EBC, eight randomized controlled trials with 14,072 participants were analyzed. The efficacy and safety outcomes included disease-free survival (DFS), overall survival (OS), relapse, breast cancer-specific survival (BCSS), and grade 3-5 adverse events...
March 23, 2017: Oncology Research
https://www.readbyqxmd.com/read/28337281/c-myc-induced-upregulation-of-lncrna-snhg12-regulates-cell-proliferation-apoptosis-and-migration-in-triple-negative-breast-cancer
#12
Ouchen Wang, Fan Yang, Yehuan Liu, Lin Lv, Ruimin Ma, Chuanzhi Chen, Jiao Wang, Qiufan Tan, Yue Cheng, Erjie Xia, Yizuo Chen, Xiaohua Zhang
Triple-negative breast cancer (TNBC) is one of the most aggressive subtypes of breast cancer, with a significantly higher recurrence and mortality rate. There is an urgent need to uncover the mechanism underlying TNBC and establish therapeutic targets. Long non-coding RNAs (lncRNAs) are involved in a series of biological functions and provide novel insights into the molecular mechanism of cancer. Based on their expression specificity and large number, lncRNAs are likely to serve as the basis for clinical applications in oncology...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28335884/prognostic-factors-and-survival-according-to-tumour-subtype-in-women-presenting-with-breast-cancer-brain-metastases-at-initial-diagnosis
#13
José Pablo Leone, Julieta Leone, Ariel Osvaldo Zwenger, Julián Iturbe, Bernardo Amadeo Leone, Carlos Teodoro Vallejo
BACKGROUND: The presence of brain metastases at the time of initial breast cancer diagnosis (BMIBCD) is uncommon. Hence, the prognostic assessment and management of these patients is very challenging. The aim of this study was to analyse the influence of tumour subtype compared with other prognostic factors in the survival of patients with BMIBCD. METHODS: We evaluated women with BMIBCD, reported to Surveillance, Epidemiology and End Results program from 2010 to 2013...
March 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28334730/examining-the-common-aetiology-of-serous-ovarian-cancers-and-basal-like-breast-cancers-using-double-primaries
#14
Colin B Begg, Megan S Rice, Emily C Zabor, Shelley S Tworoger
BACKGROUND: The somatic molecular profiles of basal-like breast cancers and high-grade serous ovarian cancers share many similarities, leading to the hypothesis that they have similar aetiologies, in which case they should occur together in the same patient more often than expected. METHODS: We identified 545 women with double independent primary cancers of the breast and ovary reported to the California Cancer Registry from 1999 to 2013 and examined the coincidence of subtype combinations...
March 23, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28333325/triple-paternal-contribution-to-a-normal-complete-molar-chimeric-singleton-placenta
#15
I Ariel, D Goldman-Wohl, S Yagel, E Gazit, R Loewenthal
A comprehensive study of unusual cases of placental pathology may provide insight into mechanisms of normal human fertilization and early embryonic development by examining the exception to the rule. A gravida three para two 39-year-old woman was monitored by ultrasound from 16 weeks of gestation for cystic placenta. A female newborn was born at 36 weeks gestation. Pathologic examination of the partially cystic placenta revealed a singleton placenta comprised of 2/3 normal placenta and 1/3 complete hydatidiform mole, largely degenerated...
March 14, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333150/kaiso-depletion-attenuates-the-growth-and-survival-of-triple-negative-breast-cancer-cells
#16
Blessing I Bassey-Archibong, Lyndsay G A Rayner, Shawn M Hercules, Craig W Aarts, Anna Dvorkin-Gheva, Jonathan L Bramson, John A Hassell, Juliet M Daniel
Triple negative breast cancers (TNBC) are highly aggressive and lack specific targeted therapies. Recent studies have reported high expression of the transcription factor Kaiso in triple negative tumors, and this correlates with their increased aggressiveness. However, little is known about the clinical relevance of Kaiso in the growth and survival of TNBCs. Herein, we report that Kaiso depletion attenuates TNBC cell proliferation, and delays tumor onset in mice xenografted with the aggressive MDA-231 breast tumor cells...
March 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28333106/isolation-characterization-and-antiproliferative-activity-of-new-metabolites-from-the-south-african-endemic-red-algal-species-laurencia-alfredensis
#17
Godwin A Dziwornu, Mino R Caira, Jo-Anne de la Mare, Adrienne L Edkins, John J Bolton, Denzil R Beukes, Suthananda N Sunassee
The marine red algae of the genus Laurencia have been widely studied for their structurally diverse and biologically active secondary metabolites. We report here the natural product investigation of the organic extract of a newly identified South African endemic species, Laurencia alfredensis. A sequence of column chromatography, preparative TLC and normal phase HPLC resulted in the isolation of eleven compounds comprising three labdane-type diterpenes (1-3), four polyether triterpenes (4-7), three cholestane-type ecdysteroids (8-10) and a glycolipid (11)...
March 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28331788/periodic-mesoporous-organosilica-coated-prussian-blue-for-mr-pa-dual-modal-imaging-guided-photothermal-chemotherapy-of-triple-negative-breast-cancer
#18
Wei Tian, Yunyan Su, Ying Tian, Shouju Wang, Xiaodan Su, Ying Liu, Yunlei Zhang, Yuxia Tang, Qianqian Ni, Wenfei Liu, Meng Dang, Chunyan Wang, Junjie Zhang, Zhaogang Teng, Guangming Lu
Complete eradication of highly aggressive triple negative breast cancer (TNBC) remains a notable challenge today. In this work, an imaging-guided photothermal-chemotherapy strategy for TNBC is developed for the first time based on a periodic mesoporous organosilica (PMO) coated Prussian blue (PB@PMO) nanoplatform. The PB@PMOs have organic-inorganic hybrid frameworks, uniform diameter (125 nm), high surface area (866 m(2) g(-1)), large pore size (3.2 nm), excellent photothermal conversion capability, high drug loading capacity (260 µg mg(-1)), and magnetic resonance (MR) and photoacoustic (PA) imaging abilities...
March 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28331758/secretory-carcinoma-of-the-breast
#19
Fatma Aktepe, Dauren Sarsenov, Vahit Özmen
Secretory carcinoma is a very rare subtype of breast carcinoma. These tumors are generally associated with a favorable prognosis, although having triple-negative phenotype (estrogen receptor (ER), progesterone receptor (PR) negative and c-erbB2 (HER2) negative). In this presentation, a rare secretory carcinoma of the breast in a woman aged 24 years is discussed and the literature is reviewed.
October 2016: J Breast Health (2013)
https://www.readbyqxmd.com/read/28331746/correlation-between-18f-fdg-positron-emission-tomography-18f-fdg-uptake-levels-at-diagnosis-and-histopathologic-and-immunohistochemical-factors-in-patients-with-breast-cancer
#20
Gamze Uğurluer, Sinan Yavuz, Züleyha Çalıkuşu, Ertuğrul Seyrek, Mustafa Kibar, Meltem Serin, Canan Ersöz, Orhan Demircan
OBJECTIVE: In this study, we aimed to determine the correlation between pretreatment-staging 18F-FDG total body positron-emission tomography/computed tomography (PET/CT) maximum standardized uptake value (SUVmax) levels and histopathologic and immunohistochemical predictive and prognostic factors in patients with breast cancer. MATERIALS AND METHODS: One hundred thirty-nine women with breast cancer who were treated between 2009 and 2015 at our hospital and who had pretreatment-staging PET/CT were included in the study...
July 2016: J Breast Health (2013)
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