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https://www.readbyqxmd.com/read/29667606/applying-a-new-computer-aided-detection-scheme-generated-imaging-marker-to-predict-short-term-breast-cancer-risk
#1
Seyedehnafiseh Mirniaharikandehei, Alan B Hollingsworth, Bhavika Patel, Morteza Heidari, Hong Liu, Bin Zheng
This study aims to investigate the feasibility of identifying a new quantitative imaging marker based on false-positives generated by computer-aided detection (CAD) scheme to help predict short-term breast cancer risk. An image dataset including four view mammograms acquired from 1,044 women was retrospectively assembled. All mammograms were originally interpreted as negative by radiologists. In the next subsequent mammography screening, 402 women were diagnosed with breast cancer and 642 remained negative...
April 18, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29667555/synthesis-cytotoxicity-and-antioxidant-activity-of-new-analogues-of-rc-121-synthetic-derivatives-of-somatostatin
#2
Diana Wesselinova, Emilia D Naydenova, S Staykova, I G Goshev, L Vezenkov
BACKGROUND: Based on the structure of RC-121 (D-Phe-c (Cys-Tyr-D-Trp-Lys-Val-Cys)-Thr-NH2, - synthetic derivatives of somatostatin), some analogs were synthesized and tested for in vitro cytotoxic and antioxidant activity. OBJECTIVES: The new analogs were modifyed at position 5 with Dap (diaminopropanoic acid), Dab (diaminobutanoic acid) and Orn and at position 6 with the unnatural amino acids Tle (t-leucine). METHODS: The in vitro cytotoxic effects of the substances were investigated against a panel of human tumor cell lines HT-29 (human colorectal cancer cell line), MDA-MB-23 (human breast cancer cell line), Hep G-2 (human hepatocellular carcinoma cell line) and HeLa (cervical cancer cell line)...
April 17, 2018: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29667444/akt2-sirna-delivery-with-amphiphilic-based-polymeric-micelles-show-efficacy-against-cancer-stem-cells
#3
Diana Rafael, Petra Gener, Fernanda Andrade, Joaquin Seras-Franzoso, Sara Montero, Yolanda Fernández, Manuel Hidalgo, Diego Arango, Joan Sayós, Helena F Florindo, Ibane Abasolo, Simó Schwartz, Mafalda Videira
Development of RNA interference-based therapies with appropriate therapeutic window remains a challenge for advanced cancers. Because cancer stem cells (CSC) are responsible of sustaining the metastatic spread of the disease to distal organs and the progressive gain of resistance of advanced cancers, new anticancer therapies should be validated specifically for this subpopulation of cells. A new amphihilic-based gene delivery system that combines Pluronic® F127 micelles with polyplexes spontaneously formed by electrostatic interaction between anionic siRNA and cationic polyethylenimine (PEI) 10K, was designed (PM)...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29667385/chance-of-reimbursement-for-add-on-therapies-in-poland-and-in-the-world-review-of-the-reimbursement-recommendations
#4
Ewa Borowiack, Magdalena Marzec, Anna Nowotarska, Joanna Jarosz, Agata Orkisz, Patrycja Prząda-Machno
INTRODUCTION: Oncology drugs combined with standard therapies (so-called add-on therapies, e.g. bevacizumab, palbociclib) often receive negative recommendations regarding the legitimacy of public financing, issued by government agencies responsible for their assessment, i.e. health technology assessment agencies. The aim of the study was to estimate the scale of the problem related to the reimbursement of add-on therapies used in the treatment of breast and genitourinary cancers in Poland and in the world...
2018: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/29667342/middle-down-characterization-of-the-cell-cycle-dependence-of-histone-h4-post-translational-modifications-and-proteoforms
#5
Tingting Jiang, Michael E Hoover, Matthew V Holt, Michael A Freitas, Alan G Marshall, Nicolas L Young
Post-translational modifications (PTMs) of histones are important epigenetic regulatory mechanisms that are often dysregulated in cancer. We employ middle-down proteomics to investigate the PTMs and proteoforms of histone H4 during cell cycle progression. We use pH gradient weak cation exchange-hydrophilic interaction liquid chromatography (WCX-HILIC) for on-line liquid chromatography-mass spectrometry analysis to separate and analyze the proteoforms of histone H4. This provides enhanced separation of proteoforms, including positional isomers, and simplifies downstream data analysis...
April 17, 2018: Proteomics
https://www.readbyqxmd.com/read/29667293/enhanced-in-vitro-biocompatibility-and-water-dispersibility-of-magnetite-and-cobalt-ferrite-nanoparticles-employed-as-ros-formation-enhancer-in-radiation-cancer-therapy
#6
Stefanie Klein, Melek Kızaloğlu, Luis Portilla, Hyoungwon Park, Tobias Rejek, Julian Hümmer, Karsten Meyer, Rainer Hock, Luitpold V R Distel, Marcus Halik, Carola Kryschi
Efficient magnetic reactive oxygen species (ROS) formation enhancing agents after X-ray treatment are realized by functionalizing superparamagnetic magnetite (Fe3 O4 ) and Co-ferrite (CoFe2 O4 ) nanoparticles with self-assembled monolayers (SAMs). The Fe3 O4 and CoFe2 O4 nanoparticles are synthesized using Massart's coprecipitation technique. Successful surface modification with the SAM forming compounds 1-methyl-3-(dodecylphosphonic acid) imidazolium bromide, or (2-{2-[2-hydroxy-ethoxy]-ethoxy}-ethyl phosphonic acid provides biocompatibility and long-term stability of the Fe3 O4 and CoFe2 O4 nanoparticles in cell media...
April 18, 2018: Small
https://www.readbyqxmd.com/read/29667279/baicalein-disturbs-the-morphological-plasticity-and-motility-of-breast-adenocarcinoma-cells-depending-on-the-tumor-microenvironment
#7
Takeshi Terabayashi, Katsuhiro Hanada, Kou Motani, Hidetaka Kosako, Mami Yamaoka, Toshihide Kimura, Toshimasa Ishizaki
During tumor invasion, cancer cells change their morphology and mode of migration based on communication with the surrounding environment. Numerous studies have indicated that paracrine interactions from non-neoplastic cells impact the migratory and invasive properties of cancer cells. Thus, these interactions are potential targets for anticancer therapies. In this study, we showed that the flavones member baicalein suppresses the motility of breast cancer cells that is promoted by paracrine interactions. First, we identified laminin-332 (LN-332) as a principle paracrine factor in conditioned medium from mammary epithelium-derived MCF10A cells that regulates the morphology and motility of breast adenocarcinoma MDA-MB-231 cells...
April 18, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29667174/impact-of-prior-cancer-history-on-the-overall-survival-of-patients-newly-diagnosed-with-cancer-a-pan-cancer-analysis-of-the-seer-database
#8
Huaqiang Zhou, Yan Huang, Zeting Qiu, Hongyun Zhao, Wenfeng Fang, Yunpeng Yang, Yuanyuan Zhao, Xue Hou, Yuxiang Ma, Shaodong Hong, Ting Zhou, Yaxiong Zhang, Li Zhang
The population of cancer survivors with prior cancer is rapidly growing. Whether a prior cancer diagnosis interferes with outcome is unknown. We conducted a pan-cancer analysis to determine the impact of prior cancer history for patients newly diagnosed with cancer. We identified 20 types of primary solid tumors between 2004 to 2008 in the Surveillance, Epidemiology, and End Results (SEER) database. Demographic and clinicopathologic variables were compared by chi-squared test and t-test as appropriate. The propensity score-adjusted Kaplan-Meier method and Cox proportional hazards models were used to evaluate the impact of prior cancer on overall survival (OS)...
April 18, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29667148/sublingual-nodules-diagnostic-markers-of-metastatic-breast-cancer
#9
Xue Yang, Cui-Hong Zhu, Rui Cao, Jian Hao, Xiong-Zhi Wu
OBJECTIVE: To evaluate the diagnostic significance of sublingual nodules for metastasis of patients with breast cancer and further to explore the mechanisms of sublingual nodules. METHODS: The image data of 117 in-patients with breast cancer in stage I-IV in Tianjin Medical University Cancer Institute and Hospital from December 2009 to September 2011 were assessed retrospectively. All photos of patients' tongue were recorded by the digital camera of uniform type within 1 month after serological examination and regular re-examined by computed tomography (CT), magnetic resonance imaging and positron emission tomography CT...
April 17, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29667115/biopsy-feasibility-trial-for-breast-cancer-pathologic-complete-response-detection-after-neoadjuvant-chemotherapy-imaging-assessment-and-correlation-endpoints
#10
Gaiane M Rauch, Henry M Kuerer, Beatriz Adrada, Lumarie Santiago, Tanya Moseley, Rosalind P Candelaria, Elsa Arribas, Jia Sun, Jessica W T Leung, Savitri Krishnamurthy, Wei T Yang
PURPOSE: This study was designed to present the secondary imaging endpoints of the trial for evaluating mammogram (MMG), ultrasound (US) and image guided biopsy (IGBx) assessment of pathologic complete response (pCR) in breast cancer (BC) patients undergoing neoadjuvant chemotherapy (NAC). METHODS: Patients with T1-3, N0-3, M0 triple-negative or HER2-positive BC who received NAC were enrolled in an Institutional Review Board-approved prospective, clinical trial...
April 17, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29667103/a-healthy-lifestyle-index-and-its-association-with-risk-of-breast-endometrial-and-ovarian-cancer-among-canadian-women
#11
Rhonda Arthur, Victoria A Kirsh, Nancy Kreiger, Thomas Rohan
PURPOSE: Several modifiable risk factors have been associated with risk of female cancers, but there is limited data regarding their combined effect on risk among Canadian women. Therefore, we assessed the joint association of modifiable risk factors, using a healthy lifestyle index (HLI) score, with risk of specific reproductive cancers. METHOD: This study included a subcohort of 3,185 of the 39,618 women, who participated in the Canadian Study of Diet, Lifestyle, and Health, and in whom 410, 177, and 100 postmenopausal breast, endometrial, and ovarian cancers, respectively, were ascertained...
April 17, 2018: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/29667006/establishment-and-characterization-of-a-c57bl-6-mouse-model-of-bone-metastasis-of-breast-cancer
#12
Toru Hiraga, Tadashi Ninomiya
Bone is one of the most common sites of metastasis in patients with advanced breast cancer; however, the mechanisms of bone metastasis remain to be fully elucidated. Animal models are essential research tools for investigating the mechanisms of diseases and drug actions. To date, there have only been a few reports in which C57BL/6 mice were used for the study of bone metastases of breast cancer. In the current study, we found that intracardiac inoculation of C57BL/6 mouse-derived parental E0771 breast cancer cells (E0771/Pa) frequently lead to bone metastases in C57BL/6 mice within 2 weeks...
April 17, 2018: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29667003/chemical-genomics-reveals-inhibition-of-breast-cancer-lung-metastasis-by-ponatinib-via-c-jun
#13
Wei Shao, Shasha Li, Lu Li, Kequan Lin, Xinhong Liu, Haiyan Wang, Huili Wang, Dong Wang
Metastasis is the leading cause of human cancer deaths. Unfortunately, no approved drugs are available for anti-metastatic treatment. In our study, high-throughput sequencing-based high-throughput screening (HTS2 ) and a breast cancer lung metastasis (BCLM)-associated gene signature were combined to discover anti-metastatic drugs. After screening of thousands of compounds, we identified Ponatinib as a BCLM inhibitor. Ponatinib significantly inhibited the migration and mammosphere formation of breast cancer cells in vitro and blocked BCLM in multiple mouse models...
April 17, 2018: Protein & Cell
https://www.readbyqxmd.com/read/29666991/frequency-and-characteristics-of-contralateral-breast-abnormalities-following-recall-at-screening-mammography
#14
Joost R C Lameijer, Angela Coolen, Adri C Voogd, Luc J Strobbe, Marieke W J Louwman, Dick Venderink, Vivian C Tjan-Heijnen, Lucien E M Duijm
PURPOSE: To determine the frequency and characteristics of contralateral, non-recalled breast abnormalities following recall at screening mammography. METHODS: We included a series of 130,338 screening mammograms performed between 1 January 2014 and 1 January 2016. During the 1-year follow-up, clinical data were collected for all recalls. Screening outcome was determined for recalled women with or without evaluation of contralateral breast abnormalities. RESULTS: Of 3,995 recalls (recall rate 3...
April 17, 2018: European Radiology
https://www.readbyqxmd.com/read/29666962/activity-of-indatuximab-ravtansine-against-triple-negative-breast-cancer-in-preclinical-tumor-models
#15
Kurt Schönfeld, Peter Herbener, Chantal Zuber, Thomas Häder, Katrin Bernöster, Christoph Uherek, Jörg Schüttrumpf
PURPOSE: Triple-negative breast cancer (TNBC) is related with a poor prognosis as patients do hardly benefit from approved therapies. CD138 (Syndecan-1) is upregulated on human breast cancers. Indatuximab ravtansine (BT062) is an antibody-drug-conjugate that specifically targets CD138-expressing cells and has previously shown clinical activity in multiple myeloma. Here we show indatuximab ravtansine as a potential mono- and combination therapy for TNBC. METHODS: The effects of indatuximab ravtansine were assessed in vitro in SK-BR-3 and T47D breast cancer cell lines...
April 17, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29666928/implications-of-esr1-mutations-in-hormone-receptor-positive-breast-cancer
#16
REVIEW
Tomás Reinert, Rodrigo Gonçalves, José Bines
Endocrine treatment resistance eventually develops during adjuvant and even more often during hormonal treatment for advanced breast cancer (ABC). An ESR1 gene mutation, which encodes for the estrogen receptor (ER) protein, is one of the potential mechanisms of therapy resistance. The ESR1 mutations result in conformational changes in the ER leading to subsequent estrogen-independent transcriptional activity. These mutations are found at a lower level in early stage when compared to metastatic BC, more often through selective pressure after aromatase inhibitor (AI) treatment...
April 17, 2018: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29666814/digital-chest-tomosynthesis-the-2017-updated-review-of-an-emerging-application
#17
REVIEW
Arianna Ferrari, Luca Bertolaccini, Piergiorgio Solli, Paola Oriana Di Salvia, David Scaradozzi
Lung cancer is the leading cause of cancer death and second most common cancer among both men and women, but most of them are detected when patients become symptomatic and in late-stage. Chest radiography (CR) is a basic technique for the investigation of lung cancer and has the benefit of convenience and low radiation dose, but detection of malignancy is often difficult. The introduction of computed tomography (CT) for screening has increased the proportion of lung cancer detected but with higher exposure dose and higher costs...
March 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29666469/a-p53-mir-30a-zeb2-axis-controls-triple-negative-breast-cancer-aggressiveness
#18
Alessandra di Gennaro, Valentina Damiano, Giulia Brisotto, Michela Armellin, Tiziana Perin, Antonella Zucchetto, Michela Guardascione, Herman P Spaink, Claudio Doglioni, B Ewa Snaar-Jagalska, Manuela Santarosa, Roberta Maestro
Inactivation of p53 contributes significantly to the dismal prognosis of breast tumors, most notably triple-negative breast cancers (TNBCs). How the relief from p53 tumor suppressive functions results in tumor cell aggressive behavior is only partially elucidated. In an attempt to shed light on the implication of microRNAs in this context, we discovered a new signaling axis involving p53, miR-30a and ZEB2. By an in silico approach we identified miR-30a as a putative p53 target and observed that in breast tumors reduced miR-30a expression correlated with p53 inactivation, lymph node positivity and poor prognosis...
April 17, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29666189/single-cell-rna-seq-reveals-cell-heterogeneity-and-hierarchy-within-mouse-mammary-epithelia
#19
Heng Sun, Zhengqiang Miao, Xin Zhang, Un In Chan, Sek Man Su, Sen Guo, Chris Koon Ho Wong, Xiaoling Xu, Chu-Xia Deng
The mammary gland is very intricately and well organized into distinct tissues, including epithelia, endothelia, adipocytes, and stromal and immune cells. Many mammary gland diseases, such as breast cancer arise from abnormalities in the mammary epithelium, which is mainly composed of two distinct lineages, the basal and luminal cells. Because of the limitation of traditional transcriptome analysis of bulk mammary cells, the hierarchy and heterogeneity of mammary cells within these two lineages remain unclear...
April 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29666142/tumor-xenograft-modeling-identifies-tcf4-itf2-loss-associated-with-breast-cancer-chemoresistance
#20
Gorka Ruiz de Garibay, Francesca Mateo, Agostina Stradella, Rafael Valdés-Mas, Luis Palomero, Jordi Serra-Musach, Diana A Puente, Ander Díaz-Navarro, Gardenia Vargas-Parra, Eva Tornero, Idoia Morilla, Lourdes Farré, María Martinez-Iniesta, Carmen Herranz, Emmet McCormack, August Vidal, Anna Petit, Teresa Soler, Conxi Lázaro, Xose S Puente, Alberto Villanueva, Miguel Angel Pujana
Understanding the mechanisms of cancer therapeutic resistance is fundamental to improving cancer care. There is clear benefit from chemotherapy in different breast cancer settings; however, knowledge of the mutations and genes that mediate resistance is incomplete. In this study, by modeling chemoresistance in patient-derived xenografts (PDXs), we show that adaptation to therapy is genetically complex and identify loss of transcription factor 4 (TCF4) associated with this process. A triple-negative BRCA1 -mutated PDX was used to study the genetics of chemoresistance...
April 13, 2018: Disease Models & Mechanisms
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