keyword
MENU ▼
Read by QxMD icon Read
search

Molecular biology and breast cancer

keyword
https://www.readbyqxmd.com/read/28930564/expression-and-role-of-long-non-coding-rna-h19-in-carcinogenesis
#1
Hisashi Yoshimura, Yoko Matsuda, Masami Yamamoto, Shinji Kamiya, Toshiyuki Ishiwata
With the recent advent of whole genome and transcriptome sequencing technologies, long non-coding RNAs have been brought into the spotlight in molecular biology. H19 was one of the first reported long non-coding RNAs; its expression is high in embryonic organs and absent or greatly reduced in most adult tissues. Accumulating evidence suggests that H19 plays crucial roles in embryogenesis. However, its levels are increased in different cancers, including breast, hepato-gastrointestinal, urological, respiratory, and brain tumors...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28925066/beyond-the-androgen-receptor-ii-new-approaches-to-understanding-and-treating-metastatic-prostate-cancer-report-from-the-2017-coffey-holden-prostate-cancer-academy-meeting
#2
REVIEW
Andrea K Miyahira, Heather H Cheng, Wassim Abida, Leigh Ellis, Lauren C Harshman, Daniel E Spratt, Jonathan W Simons, Kenneth J Pienta, Howard R Soule
INTRODUCTION: The 2017 Coffey-Holden Prostate Cancer Academy (CHPCA) Meeting, "Beyond the Androgen Receptor II: New Approaches to Understanding and Treating Metastatic Prostate Cancer," was held in Carlsbad, California from June 14-17, 2017. METHODS: The CHPCA is an annual scientific conference hosted by the Prostate Cancer Foundation (PCF) that is uniquely designed to produce extensive and constructive discussions on the most urgent and impactful topics concerning research into the biology and treatment of metastatic prostate cancer...
September 18, 2017: Prostate
https://www.readbyqxmd.com/read/28923544/modulation-of-oncogenic-transcription-factors-by-bioactive-natural-products-in-breast-cancer
#3
REVIEW
Mohadeseh Hasanpourghadi, Ashok Kumar Pandurangan, Mohd Rais Mustafa
Carcinogenesis, a multi-step phenomenon, characterized by alterations at genetic level and affecting the main intracellular pathways controlling cell growth and development. There are growing number of evidences linking oncogenes to the induction of malignancies, especially breast cancer. Modulations of oncogenes lead to gain-of-function signals in the cells and contribute to the tumorigenic phenotype. These signals yield a large number of proteins that cause cell growth and inhibit apoptosis. Transcription factors such as STAT, p53, NF-κB, c-JUN and FOXM1, are proteins that are conserved among species, accumulate in the nucleus, bind to DNA and regulate the specific genes targets...
September 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28922402/new-insights-into-the-metastatic-behavior-after-breast-cancer-surgery-according-to-well-established-clinicopathological-variables-and-molecular-subtypes
#4
Oreste Claudio Buonomo, Emanuele Caredda, Ilaria Portarena, Gianluca Vanni, Augusto Orlandi, Claudia Bagni, Giuseppe Petrella, Leonardo Palombi, Paolo Orsaria
Despite advances in treatment, up to 30% of patients with early breast cancer (BC) experience distant disease relapse. However, a comprehensive understanding of tumor spread and site-specific recurrence patterns remains lacking. This retrospective case-control study included 103 consecutive patients with metastatic BC admitted to our institution (2000-2013). Cases were matched according to age, tumor biology, and clinicopathological features to 221 patients with non-metastatic BC (control group). The median follow-up period among the 324 eligible patients was 7...
2017: PloS One
https://www.readbyqxmd.com/read/28919786/genetic-variants-in-long-noncoding-rna-h19-contribute-to-the-risk-of-breast-cancer-in-a-southeast-china-han-population
#5
Yuxiang Lin, Fangmeng Fu, Yazhen Chen, Wei Qiu, Songping Lin, Peidong Yang, Meng Huang, Chuan Wang
The long noncoding RNA (lncRNA) H19 is a maternally expressed imprinted gene that plays important roles in tumorigenesis, progression, and metastasis. However, the association between polymorphisms on H19 and breast cancer (BC) susceptibility has remained obscure. In this case-control study, we assessed the interaction between two lncRNA H19 single-nucleotide polymorphisms (SNPs) (rs217727 C>T, rs2839698 C>T) and the risk of BC in a Chinese Han population. In total, 1,005 BC cases and 1,020 healthy controls were enrolled in this study...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28919302/obesity-and-breast-cancer-role-of-estrogens-and-the-molecular-underpinnings-of-aromatase-regulation-in-breast-adipose-tissue
#6
REVIEW
Céline Gérard, Kristy A Brown
One in eight women will develop breast cancer over their lifetime making it the most common female cancer. The cause of breast cancer is multifactorial and includes hormonal, genetic and environmental cues. Obesity is now an accepted risk factor for breast cancer in postmenopausal women, particularly for the hormone-dependent subtype of breast cancer. Obesity, which is characterized by an excess accumulation of body fat, is at the origin of chronic inflammation of white adipose tissue and is associated with dramatic changes in the biology of adipocytes leading to their dysfunction...
September 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28919047/long-non-coding-rna-657-suppresses-hepatocellular-carcinoma-cell-growth-by-acting-as-a-molecular-sponge-of-mir-106a-5p-to-regulate-pten-expression
#7
Bingren Hu, Huajie Cai, Ru Zheng, Shouzhang Yang, Zhenxu Zhou, Jinfu Tu
Previous study has identified the aberrant expression of LINC00657, a long non-coding RNA (lncRNA), in human breast cancer. However, the expression pattern, biological function and underlying mechanism of LINC00657 in human hepatocellular carcinoma (HCC) remain obscure. The expression levels of LINC00657 in HCC tissues and cell lines were determined by quantitative real-time PCR. CCK-8 assay, cell colony formation assay, cell cycle analysis, Transwell assay were performed to determine whether LINC00657 could affect HCC progression...
September 14, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28916342/pp2a-regulates-signaling-through-hormonal-receptors-in-breast-cancer-with-important-therapeutic-implications
#8
REVIEW
Ion Cristóbal, Blanca Torrejón, Javier Martínez-Useros, Juan Madoz-Gurpide, Federico Rojo, Jesús García-Foncillas
The functional inhibition of protein phosphatase 2A (PP2A) has emerged in the last years as a common alteration in breast cancer that determines poor outcome and contributes to disease progression and aggressiveness. Furthermore, expression of estrogen receptor (ER) is a high relevant molecular event with key therapeutic implications in breast cancer, and androgen receptor (AR) signaling is involved in the pathogenesis of breast cancer and represents a novel target with crescent importance in this disease. In this review, we summarize the role of the tumor suppressor PP2A in modulating ER and AR signaling in breast cancer, the molecular mechanisms involved, and its biological and therapeutic impact...
September 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28912426/deconvolution-of-dna-methylation-identifies-differentially-methylated-gene-regions-on-1p36-across-breast-cancer-subtypes
#9
Alexander J Titus, Gregory P Way, Kevin C Johnson, Brock C Christensen
Breast cancer is a complex disease consisting of four distinct molecular subtypes. DNA methylation-based (DNAm) studies in tumors are complicated further by disease heterogeneity. In the present study, we compared DNAm in breast tumors with normal-adjacent breast samples from The Cancer Genome Atlas (TCGA). We constructed models stratified by tumor stage and PAM50 molecular subtype and performed cell-type reference-free deconvolution to control for cellular heterogeneity. We identified nineteen differentially methylated gene regions (DMGRs) in early stage tumors across eleven genes (AGRN, C1orf170, FAM41C, FLJ39609, HES4, ISG15, KLHL17, NOC2L, PLEKHN1, SAMD11, WASH5P)...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28904887/biology-and-clinical-significance-of-circulating-tumor-cell-subpopulations-in-lung-cancer
#10
REVIEW
Linda O'Flaherty, Harriet Wikman, Klaus Pantel
By identifying and tracking genetic changes in primary tumors and metastases, patients can be stratified for the most efficient therapeutic regimen by screening for known biomarkers. However, retrieving tissues biopsies is not always feasible due to tumor location or risk to patient. Therefore, a liquid biopsies approach offers an appealing solution to an otherwise invasive procedure. The rapid growth of the liquid biopsy field has been aided by improvements in the sensitivity and specificity of enrichment assays for isolating circulating tumor cells (CTCs) from normal surrounding blood cells...
August 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28899398/associations-of-two-pore-domain-potassium-channels-and-triple-negative-breast-cancer-subtype-in-the-cancer-genome-atlas-systematic-evaluation-of-gene-expression-and-methylation
#11
Keith A Dookeran, Wei Zhang, Leslie Stayner, Maria Argos
OBJECTIVES: It is unclear whether 2-pore domain potassium channels are novel molecular markers with differential expression related to biologically aggressive triple-negative type breast tumors. Our objective was to systematically evaluate associations of 2-pore domain potassium channel gene expression and DNA methylation with triple-negative subtype in The Cancer Genome Atlas invasive breast cancer dataset. Methylation and expression data for all fifteen 2-pore domain potassium family genes were examined for 1040 women, and associations with triple-negative subtype (vs...
September 12, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28894966/targeting-cancer-specific-glycans-by-cyclic-peptide-lectinomimics
#12
Maria C Rodriguez, Austin B Yongye, Mihael Cudic, Karina Martinez Mayorga, Enbo Liu, Barbara M Mueller, Jon Ainsley, Tatyana Karabencheva-Christova, Christo Z Christov, Mare Cudic, Predrag Cudic
The transformation from normal to malignant phenotype in human cancers is associated with aberrant cell-surface glycosylation. Thus, targeting glycosylation changes in cancer is likely to provide not only better insight into the roles of carbohydrates in biological systems, but also facilitate the development of new molecular probes for bioanalytical and biomedical applications. In the reported study, we have synthesized lectinomimics based on odorranalectin 1; the smallest lectin-like cyclic peptide isolated from the frog Odorrana grahami skin, and assessed the ability of these peptides to bind specific carbohydrates on molecular and cellular levels...
September 11, 2017: Amino Acids
https://www.readbyqxmd.com/read/28894698/paradigm-shift-toward-reducing-overtreatment-of-ductal-carcinoma-in-situ-of-breast
#13
REVIEW
Yasuaki Sagara, Wong Julia, Mehra Golshan, Masakazu Toi
The prevalence of ductal carcinoma in situ (DCIS) of the breast has increased substantially after the introduction of breast cancer screening programs, although the clinical effects of early DCIS detection and treatment remain unclear. The standard treatment for DCIS has involved local breast-conserving surgery (BCS) followed by radiotherapy (RT) or total mastectomy with/without endocrine therapy, and the choice of local treatment is not usually based on clinicopathologic or biological factors. However, we have investigated the effectiveness of local treatment using breast surgery and RT using Surveillance, Epidemiology, and End Results data, and found that the effectiveness of breast surgery was modified by the nuclear grade...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28894420/exosomes-as-potential-biomarkers-and-targeted-therapy-in-colorectal-cancer-a-mini-review
#14
REVIEW
Kha Wai Hon, Nadiah Abu, Nurul-Syakima Ab Mutalib, Rahman Jamal
The number of colorectal cancer (CRC) cases have increased gradually year by year. In fact, CRC is one of the most widely diagnosed cancer in men and women today. This disease is usually diagnosed at a later stage of the development, and by then, the chance of survival has declined significantly. Even though substantial progress has been made in understanding the basic molecular mechanism of CRC, there is still a lack of understanding in using the available information for diagnosing CRC effectively. Liquid biopsies are minimally invasive and have become the epitome of a good screening source for stage-specific diagnosis, measuring drug response and severity of the disease...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28893223/brca2-carriers-with-male-breast-cancer-show-elevated-tumour-methylation
#15
Siddhartha Deb, Kylie L Gorringe, Jia-Min B Pang, David J Byrne, Elena A Takano, kConFab Investigators, Alexander Dobrovic, Stephen B Fox
BACKGROUND: Male breast cancer (MBC) represents a poorly characterised group of tumours, the management of which is largely based on practices established for female breast cancer. However, recent studies demonstrate biological and molecular differences likely to impact on tumour behaviour and therefore patient outcome. The aim of this study was to investigate methylation of a panel of commonly methylated breast cancer genes in familial MBCs. METHODS: 60 tumours from 3 BRCA1 and 25 BRCA2 male mutation carriers and 32 males from BRCAX families were assessed for promoter methylation by methylation-sensitive high resolution melting in a panel of 10 genes (RASSF1A, TWIST1, APC, WIF1, MAL, RARβ, CDH1, RUNX3, FOXC1 and GSTP1)...
September 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28880970/optimization-of-western-blotting-analysis-for-the-isolation-and-detection-of-membrane-xenobiotic-transporter-abcg2
#16
Małgorzata Szczygieł, Marcin Markiewicz, Milena Szafraniec, Roxana Zuziak, Krystyna Urbańska, Leszek Fiedor
All organisms are exposed to numerous stress factors, which include harmful xenobiotics. The diversity of these compounds is enormous, thus in the course of evolution diverse biological defense mechanisms at various levels of organization have developed. One of them engages an evolutionarily conserved family of transporters from the ABC superfamily, found in most species - from bacteria to humans. An important example of such a transporter is the breast cancer resistance protein (BCRP/ABCG2), a typical integral membrane protein...
2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28877888/a-novel-18-marker-panel-predicting-clinical-outcome-in-breast-cancer
#17
Jana Biermann, Szilárd Nemes, Toshima Z Parris, Hanna Engqvist, Elisabeth Werner Rönnerman, Eva Forssell-Aronsson, Gunnar Steineck, Per Karlsson, Khalil Helou
BACKGROUND: Gene expression profiling has made considerable contributions to our understanding of cancer biology and clinical care. This study describes a novel gene expression signature for breast cancer-specific survival that was validated using external datasets. METHODS: Gene expression signatures for invasive breast carcinomas (mainly Luminal B subtype) corresponding to 136 patients were analysed using Cox regression and the effect of each gene on disease-specific survival (DSS) was estimated...
September 6, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28876586/is-ki67-predictive-of-tumour-response-to-neoadjuvant-chemotherapy-and-to-long-term-disease-outcome-in-breast-cancer-patients-at-dr-george-mukhari-academic-hospital-a-preliminary-report
#18
D Mokone, B Ratlabala, M Z Koto, J H R Becker, M Bida
BACKGROUND: The difference in tumour response to neoadjuvant chemotherapy has been attributed to difference in tumour biology. Ki67, a proliferative protein, is one of the molecular markers that are used to predict tumour response to chemotherapy. A high Ki67 index and or a decrease in Ki67 index after a short-term of NAC is said to predict clinical and pathological response and thus disease free survival but not over-all survival. METHOD: A prospective study. Core needle biopsy is repeated after 2 cycles of NAC (8 weeks) in Stage IIb and Stage III breast cancer patients and is compared to base-line biopsy...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28872903/in-vitro-biological-effects-of-sulforaphane-sfn-epigallocatechin-3-gallate-egcg-and-curcumin-on-breast-cancer-cells-a-systematic-review-of-the-literature
#19
Vincenza Gianfredi, Daniele Nucci, Samuele Vannini, Milena Villarini, Massimo Moretti
Much of the recent research in neoplasia has been focusing on the epigenetics of cancer cells, particularly as regards the search for potential molecular biomarkers that could be used for early diagnosis, effective treatment, and prognosis of several types of cancer. Carcinogenesis often starts with mutations in oncogenes and tumor suppressor genes, and it leads to anomalies in cellular processes as vital as cell cycle regulation and apoptosis. Because malignant changes arise as a result of genetic as well as epigenetic mechanisms, one possible means of intervention involves reprogramming gene expression, so as to-at least in part-revert the molecular alterations...
September 5, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28870341/production-characterization-and-biological-activities-of-acidic-exopolysaccharide-from-marine-bacillus-amyloliquefaciens-3ms-2017
#20
Samah A El-Newary, Abeer Y Ibrahim, Mohsen S Asker, Manal G Mahmoud, Mohamed E El Awady
OBJECTIVE: To evaluate in-vitro antioxidant, anti-inflammatory and antitumor abilities against human breast adenocarcinoma (MCF7) and human prostate cancer (PC3) as well as the suppressor effect of bacterial exopolysaccharide (BAEPS) on Ehrlich ascites carcinoma (EAC). METHODS: In-vitro antioxidants characters of BAEPS were determined using various methods, while anti-inflammatory activity was estimated against cyclooxygenase (COX-1 and COX-2). In-vitro study, anticancer against MCF7 and PC3 were assessed by the mitochondrial dependent reduction of yellow MTT...
July 2017: Asian Pacific Journal of Tropical Medicine
keyword
keyword
106491
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"