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prostate cancer methylation

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https://www.readbyqxmd.com/read/28930171/comprehensive-evaluation-of-tff3-promoter-hypomethylation-and-molecular-biomarker-potential-for-prostate-cancer-diagnosis-and-prognosis
#1
Maibritt Nørgaard, Christa Haldrup, Tine Maj Storebjerg, Else Marie Vestergaard, Peter J Wild, Søren Høyer, Michael Borre, Torben Falck Ørntoft, Karina Dalsgaard Sørensen
Overdiagnosis and overtreatment of clinically insignificant tumors remains a major problem in prostate cancer (PC) due to suboptimal diagnostic and prognostic tools. Thus, novel biomarkers are urgently needed. In this study, we investigated the biomarker potential of Trefoil factor 3 (TFF3) promoter methylation and RNA expression levels for PC. Initially, by quantitative methylation specific PCR (qMSP) analysis of a large radical prostatectomy (RP) cohort (n = 292), we found that the TFF3 promoter was significantly hypomethylated in PC compared to non-malignant (NM) prostate tissue samples (p < 0...
September 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28920447/synthesis-and-cytotoxic-activity-of-4-o-%C3%AE-d-galactopyranosyl-derivatives-of-phenolic-acids-esters
#2
Nader Al Bujuq, Sharif Arar, Raida Khalil
The glycosylation of naturally occurring phenolic acids has a significant impact on their solubility, stability and physiochemical properties. D-Galactose residue was found to form a part of glycoconjugates in several tissues and involved in a variety of physiological process. To the best of our knowledge, we have noticed a little information about the glycosylation of the phenolic acids with galactose residue. In this work, we describe the glycosylation of methyl vanillate and methyl ferulate with peracetylated-β-D-galactopyranose in the presence of BF3·OEt2...
September 18, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28915537/mta1-expression-in-human-cancers-clinical-and-pharmacological-significance
#3
REVIEW
Vijaya Lakshmi Malisetty, Vasudevarao Penugurti, Prashanth Panta, Suresh Kumar Chitta, Bramanandam Manavathi
Remarkably, majority of the cancer deaths are due to metastasis, not because of primary tumors. Metastasis is one of the important hallmarks of cancer. During metastasis invasion of primary tumor cells from the site of origin to a new organ occurs. Metastasis associated proteins (MTAs) are a small family of transcriptional coregulators that are closely associated with tumor metastasis. These proteins are integral components of nuclear remodeling and deacetylation complex (NuRD). By virtue of being integral components of NuRD, these proteins regulate the gene expression by altering the epigenetic changes such as acetylation and methylation on the target gene chromatin...
September 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28914765/statin-and-bisphosphonate-induce-starvation-in-fast-growing-cancer-cell-lines
#4
Heidrun Karlic, Florian Haider, Roman Thaler, Silvia Spitzer, Klaus Klaushofer, Franz Varga
Statins and bisphosphonates are increasingly recognized as anti-cancer drugs, especially because of their cholesterol-lowering properties. However, these drugs act differently on various types of cancers. Thus, the aim of this study was to compare the effects of statins and bisphosphonates on the metabolism (NADP⁺/NADPH-relation) of highly proliferative tumor cell lines from different origins (PC-3 prostate carcinoma, MDA-MB-231 breast cancer, U-2 OS osteosarcoma) versus cells with a slower proliferation rate like MG-63 osteosarcoma cells...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28901514/multimodal-actions-of-the-phytochemical-sulforaphane-suppress-both-ar-and-ar-v7-in-22rv1-cells-advocating-a-potent-pharmaceutical-combination-against-castration-resistant-prostate-cancer
#5
Namrata Khurana, Hogyoung Kim, Partha K Chandra, Sudha Talwar, Pankaj Sharma, Asim B Abdel-Mageed, Suresh C Sikka, Debasis Mondal
Prostate cancer (PCa) cells expressing full-length androgen receptor (AR-FL) are susceptible to androgen deprivation therapy (ADT). However, outgrowth of castration-resistant prostate cancer (CRPC) can occur due to the expression of constitutively active (ligand-independent) AR splice variants, particularly AR-V7. We previously demonstrated that sulforaphane (SFN), an isothiocyanate phytochemical, can decrease AR-FL levels in the PCa cell lines, LNCaP and C4-2B. Here, we examined the efficacy of SFN in targeting both AR-FL and AR-V7 in the CRPC cell line, CWR22Rv1 (22Rv1)...
August 30, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28890397/regulated-expression-of-the-tp%C3%AE-isoform-of-the-human-t-prostanoid-receptor-by-the-tumour-suppressors-foxp1-and-nkx3-1-implications-for-the-role-of-thromboxane-in-prostate-cancer
#6
Aine G O'Sullivan, Sarah B Eivers, Eamon P Mulvaney, B Therese Kinsella
The prostanoid thromboxane (TX)A2 signals through the TPα and TPβ isoforms of T Prostanoid receptor (TP) that are transcriptionally regulated by distinct promoters termed Prm1 and Prm3, respectively, within the TBXA2R gene. We recently demonstrated that expression of TPα and TPβ is increased in PCa, differentially correlating with Gleason grade and with altered CpG methylation of the individual Prm1/Prm3 regions within the TBXA2R. The current study sought to localise the sites of CpG methylation within Prm1 and Prm3, and to identify the main transcription factors regulating TPβ expression through Prm3 in the prostate adenocarcinoma PC-3 and LNCaP cell lines...
September 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28870782/the-role-of-tet-mediated-dna-hydroxymethylation-in-prostate-cancer
#7
E Smeets, A G Lynch, S Prekovic, T Van den Broeck, L Moris, C Helsen, S Joniau, F Claessens, C E Massie
Ten-eleven translocation (TET) proteins are recently characterized dioxygenases that regulate demethylation by oxidizing 5-methylcytosine to 5-hydroxymethylcytosine and further derivatives. The recent finding that 5hmC is also a stable and independent epigenetic modification indicates that these proteins play an important role in diverse physiological and pathological processes such as neural and tumor development. Both the genomic distribution of (hydroxy)methylation and the expression and activity of TET proteins are dysregulated in a wide range of cancers including prostate cancer...
September 1, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28858840/pharmacological-activities-of-some-triazinopyrazolothieno-pyrimidine-derivatives
#8
Saleh A Bahashwan
Triazinopyrazolothieno pyrimidine derivatives 1-5 were evaluated for their anti-inflammatory, analgesic and anticancer activities and acute toxicity. Anti-inflammatory activity of the compounds was studied using the carrageenan test. All tested compounds showed analgesic activity, 3-methoxycarbonyl-4,6-dimethyl-8-[(N-methylindolyl)methyl] pyrimido [5',4':4,5]thieno [3',2'-3,4]pyrazolo [5,1-c]triazine (4) showed activity comparable to that of diclofenac. Compounds 1-5 were also screened for anticancer activity on a human lung cancer cell line (A549) and a human prostate cancer cell line (DU145) using the MTT micro-cultured tetrazolium assay method...
September 1, 2017: Acta Pharmaceutica
https://www.readbyqxmd.com/read/28854562/methylation-of-subtelomeric-repeat-d4z4-in-peripheral-blood-leukocytes-is-associated-with-biochemical-recurrence-in-localized-prostate-cancer-patients
#9
Yuyan Han, Junfeng Xu, Jeri Kim, Xifeng Wu, Jian Gu
Global DNA methylation may affect chromosome structure and genomic stability and is involved in carcinogenesis. In this study, we aimed to investigate whether methylation of pericentromeric repeat NBL2 and subtelomeric repeat D4Z4 in peripheral blood was associated with the aggressiveness of prostate cancer (PCa). We measured the methylation status of different CpG sites of NBL2 and D4Z4 in 795 PCa patients and compared their methylation levels among patients with different Gleason Score at diagnosis. We then analyzed the association of the NBL2 and D4Z4 methylation with the risk of biochemical recurrence (BCR) in patients receiving radical prostatectomy or radiotherapy using a multivariate Cox proportional hazards model...
August 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28821281/white-blood-cell-dna-methylation-and-risk-of-breast-cancer-in-the-prostate-lung-colorectal-and-ovarian-cancer-screening-trial-plco
#10
Susan R Sturgeon, J Richard Pilsner, Kathleen F Arcaro, Kaoru Ikuma, Haotian Wu, Soon-Mi Kim, Nayha Chopra-Tandon, Adam R Karpf, Regina G Ziegler, Catherine Schairer, Raji Balasubramanian, David A Reckhow
BACKGROUND: Several studies have suggested that global DNA methylation in circulating white blood cells (WBC) is associated with breast cancer risk. METHODS: To address conflicting results and concerns that the findings for WBC DNA methylation in some prior studies may reflect disease effects, we evaluated the relationship between global levels of WBC DNA methylation in white blood cells and breast cancer risk in a case-control study nested within the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial (PLCO) cohort...
August 18, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28811844/lsd1-dual-function-in-mediating-epigenetic-corruption-of-the-vitamin-d-signaling-in-prostate-cancer
#11
Sebastiano Battaglia, Ellen Karasik, Bryan Gillard, Jennifer Williams, Trisha Winchester, Michael T Moser, Dominic J Smiraglia, Barbara A Foster
BACKGROUND: Lysine-specific demethylase 1A (LSD1) is a key regulator of the androgen (AR) and estrogen receptors (ER), and LSD1 levels correlate with tumor aggressiveness. Here, we demonstrate that LSD1 regulates vitamin D receptor (VDR) activity and is a mediator of 1,25(OH)2-D3 (vitamin D) action in prostate cancer (PCa). METHODS: Athymic nude mice were xenografted with CWR22 cells and monitored weekly after testosterone pellet removal. Expression of LSD1 and VDR (IHC) were correlated with tumor growth using log-rank test...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28795320/ezh2-promotes-cell-proliferation-by-regulating-the-expression-of-runx3-in-laryngeal-carcinoma
#12
Rong Lian, Huimin Ma, Zhiyan Wu, Guozheng Zhang, Lei Jiao, Wenjie Miao, Qianqian Jin, Ruixue Li, Ping Chen, Haixu Shi, Wenfa Yu
Enhancer of zeste homolog 2 (EZH2) is a highly conserved histone methyltransferase, which is overexpressed in different types of cancers such as breast and prostate cancer. It is reported that EZH2 can directly down-regulate RUNX3 by increasing histone H3 methylation. However, the role of EZH2 in the development and progression of laryngeal carcinoma has not yet been investigated, and the relationship between EZH2 and RUNX3 in laryngeal carcinoma is rarely reported. The current study aims to determine the role of EZH2 in the progression of laryngeal carcinoma, and investigate the interaction between EZH2 and the tumor suppressor RUNX3...
August 9, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28775315/pan-urologic-cancer-genomic-subtypes-that-transcend-tissue-of-origin
#13
Fengju Chen, Yiqun Zhang, Dominick Bossé, Aly-Khan A Lalani, A Ari Hakimi, James J Hsieh, Toni K Choueiri, Don L Gibbons, Michael Ittmann, Chad J Creighton
Urologic cancers include cancers of the bladder, kidney, prostate, and testes, with common molecular features spanning different types. Here, we show that 1954 urologic cancers can be classified into nine major genomic subtypes, on the basis of multidimensional and comprehensive molecular characterization (including DNA methylation and copy number, and RNA and protein expression). Tissue dominant effects are first removed computationally in order to define these subtypes, which reveal common processes-reflecting in part tumor microenvironmental influences-driving cellular behavior across tumor lineages...
August 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28768240/c-met-creb1-and-egfr-are-involved-in-mir-493-5p-inhibition-of-emt-via-akt-gsk-3%C3%AE-snail-signaling-in-prostate-cancer
#14
Song Wang, Xiao Wang, Jiangfeng Li, Shuai Meng, Zhen Liang, Xin Xu, Yi Zhu, Shiqi Li, Jian Wu, Mingjie Xu, Alin Ji, Yiwei Lin, Ben Liu, Xiangyi Zheng, Bo Xie, Liping Xie
miR-493-5p downregulation has emerged as a critical player in cancer progression yet, the underlying mechanisms of miR-493-5p expression pattern and its function in prostate cancer remains to be elucidated. Here, we illustrate that miR-493-5p is frequently downregulated in prostate cancer, at least partially due to altered DNA methylation. miR-493-5p functions as a tumor suppressor in prostate cancer cells. c-Met, CREB1 and EGFR are downstream target genes of miR-493-5p. miR-493-5p inhibits EMT via AKT/GSK-3β/Snail signaling in prostate cancer...
July 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28762545/epigenetic-risk-score-improves-prostate-cancer-risk-assessment
#15
Leander Van Neste, Jack Groskopf, William E Grizzle, George W Adams, Mark S DeGuenther, Peter N Kolettis, James E Bryant, Gary P Kearney, Michael C Kearney, Wim Van Criekinge, Sandra M Gaston
BACKGROUND: Early detection of aggressive prostate cancer (PCa) remains crucial for effective treatment of patients. However, PCa screening remains controversial due to a high rate of overdiagnosis and overtreatment. To better reconcile both objectives, more effective methods for assessing disease severity at the time of diagnosis are needed. METHODS: The relationship between DNA-methylation and high-grade PCa was examined in a cohort of 102 prospectively enrolled men who received standard 12-core prostate biopsies...
September 2017: Prostate
https://www.readbyqxmd.com/read/28750683/identification-of-novel-prostate-cancer-drivers-using-regnetdriver-a-framework-for-integration-of-genetic-and-epigenetic-alterations-with-tissue-specific-regulatory-network
#16
Priyanka Dhingra, Alexander Martinez-Fundichely, Adeline Berger, Franklin W Huang, Andre Neil Forbes, Eric Minwei Liu, Deli Liu, Andrea Sboner, Pablo Tamayo, David S Rickman, Mark A Rubin, Ekta Khurana
We report a novel computational method, RegNetDriver, to identify tumorigenic drivers using the combined effects of coding and non-coding single nucleotide variants, structural variants, and DNA methylation changes in the DNase I hypersensitivity based regulatory network. Integration of multi-omics data from 521 prostate tumor samples indicated a stronger regulatory impact of structural variants, as they affect more transcription factor hubs in the tissue-specific network. Moreover, crosstalk between transcription factor hub expression modulated by structural variants and methylation levels likely leads to the differential expression of target genes...
July 27, 2017: Genome Biology
https://www.readbyqxmd.com/read/28744401/polyisoprenylated-cysteinyl-amide-inhibitors-induce-caspase-3-7-and-8-mediated-apoptosis-and-inhibit-migration-and-invasion-of-metastatic-prostate-cancer-cells
#17
Rosemary A Poku, Olufisayo O Salako, Felix Amissah, Augustine T Nkembo, Elizabeth Ntantie, Nazarius S Lamango
Metastatic castration-resistant prostate cancer (mCRPC) is the most aggressive and deadly form of prostate cancer. It is characterized by the overexpression of epidermal growth factor receptors whose signals are mediated by small monomeric G proteins of the Ras superfamily. These require polyisoprenylation for functional activity. Polyisoprenylated cysteinyl amide inhibitors (PCAIs) of polyisoprenylated methylated protein methyl esterase (PMPMEase) were developed as potential targeted therapies to mitigate excessive growth signaling in mCRPC either by inhibiting PMPMEase and/or perturbing the polyisoprenylation-dependent functional interactions...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28732347/histone-demethylase-jmjd2c-epigenetic-regulators-in-tumors
#18
REVIEW
Chengcheng Zhang, Zhongqi Wang, Qing Ji, Qi Li
Histone methylation is one of the major epigenetic modifications, and various histone methylases and demethylases participate in the epigenetic regulating. JMJD2C has been recently identified as one of the histone lysine demethylases. As one member of the Jumonji-C histone demethylase family, JMJD2C has the ability to demethylate tri- or di-methylated histone 3 and 2 in either K9 (lysine residue 9) or K36 (lysine residue 36) sites by an oxidative reaction, thereby affecting heterochromatin formation, genomic imprinting, X-chromosome inactivation, and transcriptional regulation of genes...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28728135/prostate-cancer-risk-and-dna-methylation-signatures-in-aging-rats-following-developmental-bpa-exposure-a-dose-response-analysis
#19
Gail S Prins, Shu-Hua Ye, Lynn Birch, Xiang Zhang, Ana Cheong, Han Lin, Esther Calderon-Gierszal, Jacob Groen, Wen-Yang Hu, Shuk-Mei Ho, Richard B van Breemen
BACKGROUND: Previous studies have uncovered heightened prostatic susceptibility to hormone-induced neoplasia from early-life exposure to low-dose bisphenol A (BPA). However, significant data gaps remain that are essential to address for biological relevance and necessary risk assessment. OBJECTIVES: A complete BPA dose-response analysis of prostate lesions across multiple prostatic lobes was conducted that included internal BPA dosimetry, progression to adenocarcinoma with aging and mechanistic connections to epigenetically reprogramed genes...
July 11, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28727579/enhanced-anticancer-efficacy-of-histone-deacetyl-inhibitor-suberoylanilide-hydroxamic-acid-in-combination-with-a-phosphodiesterase-inhibitor-pentoxifylline-in-human-cancer-cell-lines-and-in-vivo-tumor-xenografts
#20
Saranya Nidhyanandan, Boreddy S Thippeswamy, Kottapalli B Chandrasekhar, Neetinkumar D Reddy, Nagaraj M Kulkarni, Kandasamy Karthikeyan, Farhin R Khan, Jayaprakash Raghul, Govindharajan Vijaykanth, Shridhar Narayanan
Vorinostat [suberoylanilide hydroxamic acid (SAHA)], a histone deacetylase inhibitor, shows limited clinical activity against solid tumors when used alone. The methyl xanthine drug, pentoxifylline (PENT), has been described to have antitumor properties. The aim of this study was to look for the enhanced anticancer activities of both agents when used in combination at doses lower than their respective efficacy dose when used alone. We investigated the antitumor potential of this novel combination in vitro and in vivo...
July 19, 2017: Anti-cancer Drugs
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