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https://www.readbyqxmd.com/read/29774312/breast-cancer-prevention-current-approaches-and-future-directions
#1
REVIEW
Edward R Sauter
The topic of breast cancer prevention is very broad. All aspects of the topic, therefore, cannot be adequately covered in a single review. The objective of this review is to discuss strategies in current use to prevent breast cancer, as well as potential approaches that could be used in the future. This review does not discuss early detection strategies for breast cancer, including breast cancer screening. The breast is the most common site among women worldwide of noncutaneous cancer. Many clinical and genetic factors have been found to increase a woman's risk of developing the disease...
April 2018: European Journal of Breast Health
https://www.readbyqxmd.com/read/29774075/plectin-targeted-liposomes-enhance-the-therapeutic-efficacy-of-a-parp-inhibitor-in-the-treatment-of-ovarian-cancer
#2
Siva Sai Krishna Dasa, Galina Diakova, Ryo Suzuki, Anne M Mills, Michael F Gutknecht, Alexander L Klibanov, Jill K Slack-Davis, Kimberly A Kelly
Advances in genomics and proteomics drive precision medicine by providing actionable genetic alterations and molecularly targeted therapies, respectively. While genomic analysis and medicinal chemistry have advanced patient stratification with treatments tailored to the genetic profile of a patient's tumor, proteomic targeting has the potential to enhance the therapeutic index of drugs like poly(ADP-ribose) polymerase (PARP) inhibitors. PARP inhibitors in breast and ovarian cancer patients with BRCA1/2 mutations have shown promise...
2018: Theranostics
https://www.readbyqxmd.com/read/29773172/seleno-l-methionine-and-l-ascorbic-acid-differentiate-the-biological-activity-of-doxorubicin-and-its-metal-complexes-as-a-new-anticancer-drugs-candidate
#3
Marzena Matejczyk, Grzegorz Świderski, Renata Świsłocka, Stanisław Józef Rosochacki, Włodzimierz Lewandowski
The most important problems of anti-cancer therapy include the toxicity of the drugs applied to healthy cells and the multi-drug cells resistance to chemotherapeutics. One of the most commonly used anticancer drugs is doxorubicin (DOX) used to treat certain leukemias and non-Hodgkin's lymphomas, as well as bladder, breast, stomach, lung, ovarian, thyroid, multiple myeloma and other cancers. Preliminary studies showed that metal complex with DOX improve its cytostatic activity with changes in their molecular structure and distribution of electrons, resulting in a substantial change of its biological activity (including antitumor activity)...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29769627/clinical-and-functional-characterization-of-the-cdh1-germline-variant-c-1679c-g-in-three-unrelated-families-with-hereditary-diffuse-gastric-cancer
#4
Laura Pena-Couso, José Perea, Soraia Melo, Fátima Mercadillo, Joana Figueiredo, João Miguel Sanches, Antonio Sánchez-Ruiz, Luis Robles, Raquel Seruca, Miguel Urioste
Germline changes in the CDH1 tumor suppressor gene predispose to diffuse gastric cancer and lobular breast cancer. In carriers of deleterious germline CDH1 variants, prophylactic gastrectomy is recommended. In case of germline missense variants, it is mandatory to assess the functional impact on E-cadherin, the protein encoded by CDH1, and to predict their clinical significance. Herein, we have identified a recurrent germline missense variant, c.1679C>G, segregating with gastric cancer in three unrelated Spanish families...
May 16, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29768301/germline-genome-wide-association-studies-in-women-receiving-neoadjuvant-chemotherapy-with-or-without-bevacizumab
#5
James N Ingle, Krishna R Kalari, Donald Lawrence Wickerham, Gunter von Minckwitz, Peter A Fasching, Yoichi Furukawa, Taisei Mushiroda, Matthew P Goetz, Poulami Barman, Erin E Carlson, Priya Rastogi, Joseph P Costantino, Junmei Cairns, Soonmyung Paik, Harry D Bear, Michiaki Kubo, Liewei Wang, Norman Wolmark, Richard M Weinshilboum
Neoadjuvant chemotherapy (NAC) for breast cancer is widely utilized, and we performed genome-wide association studies (GWAS) to determine whether germ-line genetic variability was associated with benefit in terms of pathological complete response (pCR), disease-free survival, and overall survival in patients entered on the NSABP B-40 NAC trial, wherein patients were randomized to receive, or not, bevacizumab in addition to chemotherapy. Patient DNA samples were genotyped with the Illumina OmniExpress BeadChip...
June 2018: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/29766361/genetic-dissection-of-the-brca2-promoter-and-transcriptional-impact-of-dna-variants
#6
Eugenia Fraile-Bethencourt, Alberto Valenzuela-Palomo, Beatriz Díez-Gómez, Mar Infante, Mercedes Durán, Germán Marcos, Enrique Lastra, Susana Gómez-Barrero, Eladio A Velasco
PURPOSE: Promoter mutations may affect transcription and can be associated with human diseases. However, the promoters of the breast cancer (BC) genes are not regularly screened. Our goal was to investigate the BRCA2 promoter in order to study a possible correlation between impaired transcription and disease. METHODS: The proximal and core promoter of the BRCA2 gene was sequenced in 95 high-risk BC patients. A BRCA2-promoter insert [- 938 to + 312 from the transcription start site (TSS)] was generated and cloned into the firefly luciferase vector pGL4...
May 15, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29765551/functional-significance-of-co-occurring-mutations-in-pik3ca-and-map3k1-in-breast-cancer
#7
Alvaro Avivar-Valderas, Robert McEwen, Amir Taheri-Ghahfarokhi, Larissa S Carnevalli, Elizabeth L Hardaker, Marcello Maresca, Kevin Hudson, Elizabeth A Harrington, Francisco Cruzalegui
The PI3Kα signaling pathway is frequently hyper-activated in breast cancer (BrCa), as a result of mutations/amplifications in oncogenes (e.g. HER2 ), decreased function in tumor suppressors (e.g. PTEN ) or activating mutations in key components of the pathway. In particular, activating mutations of PIK3CA (~45%) are frequently found in luminal A BrCa samples. Genomic studies have uncovered inactivating mutations in MAP3K1 (13-20%) and MAP2K4 (~8%), two upstream kinases of the JNK apoptotic pathway in luminal A BrCa samples...
April 20, 2018: Oncotarget
https://www.readbyqxmd.com/read/29764806/temporal-efficacy-of-a-sulforaphane-based-broccoli-sprout-diet-in-prevention-of-breast-cancer-through-modulation-of-epigenetic-mechanisms
#8
Yuanyuan Li, Phillip Buckhaults, Shizhao Li, Trygve O Tollefsbol
Breast cancer is the most common cancer and the second leading cause of cancer death among women. An important risk factor for breast cancer is individual genetic background which is initially generated early in human life; for example, during the processes of embryogenesis and fetal development in utero. Bioactive dietary components such as sulforaphane (SFN), an isothiocyanate from cruciferous vegetables including broccoli sprouts (BSp), cabbage and kale, has been shown to reduce the risk of developing many common cancers through regulation of epigenetic mechanisms...
May 15, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29763898/fgfr4-links-glucose-metabolism-and-chemotherapy-resistance-in-breast-cancer
#9
Min Xu, Shuzheng Chen, Weibin Yang, Xue Cheng, Yani Ye, Jianting Mao, Xulu Wu, Li Huang, Jiansong Ji
BACKGROUND/AIMS: Poor response to chemotherapy leads to the relapse and metastatic progression of tumors. Reprogrammed glucose metabolism is one of the important hallmarks of cancer that facilitates cancer cell survival, proliferation and chemoresistance. However, the precise fate of glucose metabolism and its role in therapy responsiveness in cancers remains largely unexplored. METHODS: The glycolytic phenotype of doxorubicin (ADR)-resistant breast cancer cells and their parental cells was assessed by measuring glucose uptake, lactate release, and extracellular acidification rate (ECAR)...
May 10, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29763737/validation-of-inflammatory-genetic-variants-associated-with-long-term-cancer-related-fatigue-in-a-large-breast-cancer-cohort
#10
T Kühl, S Behrens, A Jung, N Obi, K Thöne, M E Schmidt, H Becher, J Chang-Claude
BACKGROUND: Studies to date have reported several associations between single nucleotide polymorphisms (SNPs) and cancer related fatigue (CRF), but have been limited by small sample sizes, missing adjustment for relevant covariates or multiple testing, as well as varying CRF definitions, i.e. time and method of assessment. This study aimed to validate previously reported associations using the largest independent breast cancer sample to date and to evaluate further functional cytokine variants in relation to total CRF and all relevant CRF subdomains (physical, cognitive, and affective CRF)...
May 12, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29761322/concurrent-risk-reduction-surgery-in-patients-with-increased-lifetime-risk-for-breast-and-ovarian-cancer-an-analysis-of-the-national-surgical-quality-improvement-program-nsqip-database
#11
Maryam Elmi, Arash Azin, Ahmad Elnahas, David R McCready, Tulin D Cil
BACKGROUND: Patients with genetic susceptibility to breast and ovarian cancer are eligible for risk-reduction surgery. Surgical morbidity of risk-reduction mastectomy (RRM) with concurrent bilateral salpingo-oophorectomy (BSO) is unknown. Outcomes in these patients were compared to patients undergoing RRM without BSO using a large multi-institutional database. METHODS: A retrospective cohort analysis was conducted using the American College of Surgeon's National Surgical Quality Improvement Program (NSQIP) 2007-2016 datasets, comparing postoperative morbidity between patients undergoing RRM with patients undergoing RRM with concurrent BSO...
May 14, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29760958/targeting-muc1-c-suppresses-bcl2a1-in-triple-negative-breast-cancer
#12
Masayuki Hiraki, Takahiro Maeda, Neha Mehrotra, Caining Jin, Maroof Alam, Audrey Bouillez, Tsuyoshi Hata, Ashujit Tagde, Amy Keating, Surender Kharbanda, Harpal Singh, Donald Kufe
B-cell lymphoma 2-related protein A1 (BCL2A1) is a member of the BCL-2 family of anti-apoptotic proteins that confers resistance to treatment with anti-cancer drugs; however, there are presently no agents that target BCL2A1. The MUC1-C oncoprotein is aberrantly expressed in triple-negative breast cancer (TNBC) cells, induces the epithelial-mesenchymal transition (EMT) and promotes anti-cancer drug resistance. The present study demonstrates that targeting MUC1-C genetically and pharmacologically in TNBC cells results in the downregulation of BCL2A1 expression...
2018: Signal Transduction and Targeted Therapy
https://www.readbyqxmd.com/read/29760829/challenges-in-recruiting-african-american-women-for-a-breast-cancer-genetics-study
#13
Amanda J Compadre, Melinda E Simonson, Katy Gray, Gail Runnells, Susan Kadlubar, Kristin K Zorn
Background: African-American women, especially in the southern United States, are underrepresented in cancer genetics research. A study was designed to address this issue by investigating the germline mutation rate in African-American women in Arkansas with a personal and/or family history of breast cancer. Women were tested for these mutations using a large panel of breast cancer susceptibility genes. In this analysis, we discuss the challenges encountered in recruiting African-American women from an existing biorepository to participate in this study...
2018: Hereditary Cancer in Clinical Practice
https://www.readbyqxmd.com/read/29760406/lncrna-pvt1-regulates-triple-negative-breast-cancer-through-klf5-beta-catenin-signaling
#14
Jianming Tang, Yanxin Li, Youzhou Sang, Bo Yu, Deguan Lv, Weiwei Zhang, Haizhong Feng
Recent molecularly targeted approach gains advance in breast cancer treatment. However, the estimated 5-year survival rate has not met the desired expectation for improvement, especially for patients with triple-negative breast cancer (TNBC). Here we report that the lncRNA PVT1 promotes KLF5/beta-catenin signaling to drive TNBC tumorigenesis. PVT1 is upregulated in clinical TNBC tumors. Using genetic approaches targeting PVT1 in TNBC cells, we found that PVT1 depletion inhibited cell proliferation, colony formation, and orthotopic xenograft tumor growth...
May 15, 2018: Oncogene
https://www.readbyqxmd.com/read/29760165/the-impact-of-transcription-on-metabolism-in-prostate-and-breast-cancers
#15
Ninu Poulose, Ian G Mills, Rebecca E Steele
Metabolic dysregulation is regarded as an important driver in cancer development and progression. The impact of transcriptional changes on metabolism have been intensively studied in hormone-dependent cancers, and in particular in prostate and breast cancer. These cancers have strong similarities in the function of important transcriptional drivers, such as the estrogen and androgen receptor, at the level of dietary risk and epidemiology, genetics and therapeutically. In this review we will focus on the function of these nuclear hormone receptors and their downstream impact on metabolism, with a particular focus on lipid metabolism...
May 14, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29759441/nuclear-organization-mediates-cancer-compromised-genetic-and-epigenetic-control
#16
REVIEW
Sayyed K Zaidi, Andrew Fritz, Kirsten Tracy, Jonathan Gordon, Coralee Tye, Joseph Boyd, Andre Van Wijnen, Jeffrey Nickerson, Anthony Imbalzano, Jane Lian, Janet Stein, Gary Stein
Nuclear organization is functionally linked to genetic and epigenetic regulation of gene expression for biological control and is modified in cancer. Nuclear organization supports cell growth and phenotypic properties of normal and cancer cells by facilitating physiologically responsive interactions of chromosomes, genes and regulatory complexes at dynamic three-dimensional microenvironments. We will review nuclear structure/function relationships that include: 1. Epigenetic bookmarking of genes by phenotypic transcription factors to control fidelity and plasticity of gene expression as cells enter and exit mitosis; 2...
May 9, 2018: Advances in Biological Regulation
https://www.readbyqxmd.com/read/29758961/exploration-of-genetics-commonness-between-bladder-cancer-and-breast-cancer-based-on-a-silcio-analysis-on-disease-subtypes
#17
Wenbin Xu, Hong Xia, Wei Liu, Weiying Zheng, Lin Hua
BACKGROUND AND OBJECTIVE: Muscle-invasive bladder cancers (MIBCs) are heterogeneous cancers and can be grouped into basal-like and luminal subtypes that are highly reminiscent of those found in breast cancer. Like basal-like breast cancers, basal-like MIBCs are associated with advanced stage and metastatic disease. However, the biological and clinical significance of molecular subtypes of MIBCs remain unclear. Therefore, we implemented a serious of bioinformatics methods to explore genetic similarities between bladder and breast cancers...
April 27, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29758504/patients-perspectives-and-experiences-concerning-barriers-to-accessing-information-about-bilateral-prophylactic-mastectomy
#18
Rachael Glassey, Moira O'Connor, Angela Ives, Christobel Saunders, kConFab Investigators, Sarah O'Sullivan, Sarah J Hardcastle
PURPOSE: To explore the barriers and experiences of accessing information for women who have received genetic risk assessment/testing results for breast cancer (BC) and are considering a bilateral prophylactic mastectomy (BPM) and, exploring participants' preferences concerning information and support needs. METHODS: A qualitative retrospective study guided by interpretative phenomenological analysis was utilised. Semi-structured interviews were conducted with forty-six women who were either considering BPM or had already undergone the surgery...
May 11, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29755676/genetic-heterogeneity-and-actionable-mutations-in-her2-positive-primary-breast-cancers-and-their-brain-metastases
#19
Leticia De Mattos-Arruda, Charlotte K Y Ng, Salvatore Piscuoglio, Maria Gonzalez-Cao, Raymond S Lim, Maria R De Filippo, Nicola Fusco, Anne M Schultheis, Carolina Ortiz, Santiago Viteri, Alexandra Arias, Gabriel S Macedo, Mafalda Oliveira, Patricia Gomez, Cristina Teixidó, Paolo Nuciforo, Vicente Peg, Cristina Saura, Santiago Ramon Y Cajal, Francesc Tresserra Casas, Britta Weigelt, Javier Cortes, Joan Seoane, Jorge S Reis-Filho
Brain metastases constitute a challenge in the management of patients with HER2-positive breast cancer treated with anti-HER2 systemic therapies. Here we sought to define the repertoire of mutations private to or enriched for in HER2-positive brain metastases. Massively parallel sequencing targeting all exons of 254 genes frequently mutated in breast cancers and/or related to DNA repair was used to characterize the spatial and temporal heterogeneity of HER2-positive breast cancers and their brain metastases in six patients...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29754387/low-genetic-diversity-and-low-gene-flow-corresponded-to-a-weak-genetic-structure-of-ruddy-breasted-crake-porzana-fusca-in-china
#20
Chaoying Zhu, Peng Chen, Yuqing Han, Luzhang Ruan
The Ruddy-breasted Crake (Porzana fusca) is an extremely poorly known species. Although it is not listed as globally endangered, in recent years, with the interference of climate change and human activities, its habitat is rapidly disappearing and its populations have been shrinking. There are two different life history traits for Ruddy-breasted Crake in China, i.e., non-migratory population in the south and migratory population in the north of China. In this study, mitochondrial control sequences and microsatellite datasets of 88 individuals sampled from 8 sites were applied to analyze their genetic diversity, genetic differentiation, and genetic structure...
May 12, 2018: Biochemical Genetics
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