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https://www.readbyqxmd.com/read/29030409/clinical-relevance-of-androgen-receptor-alterations-in-prostate-cancer
#1
REVIEW
Emma Jernberg, Anders Bergh, Pernilla Wikström
Prostate cancer (PC) remains a leading cause of cancer-related deaths among men worldwide, despite continuously improved treatment strategies. Patients with metastatic disease are treated by androgen deprivation therapy (ADT) that with time results in the development of castration-resistant prostate cancer (CRPC) usually established as metastases within bone tissue. The androgen receptor (AR) transcription factor is the main driver of CRPC development and of acquired resistance to drugs given for treatment of CRPC, while a minority of patients have CRPC that is non-AR driven...
November 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29028767/prostate-specific-membrane-antigen-guided-salvage-lymph-node-dissection-in-recurrent-prostate-cancer-a-novel-technology-to-detect-lymph-node-metastases
#2
Tobias Maurer, Jürgen E Gschwend, Matthias Eiber
PURPOSE OF REVIEW: With Gallium (Ga)-prostate-specific membrane antigen (PSMA) PET/computed tomography (CT) as emerging imaging technique offering superior detection rates in biochemical recurrent prostate cancer, salvage lymph node dissection has gained increasing interest in localized oligometastatic prostate cancer. Currently, PSMA-targeting small molecules cannot only be linked to positron-emitting isotopes for imaging but also be labelled with γ-radiation emitting isotopes. These modified PSMA agents are evaluated for intraoperative guidance for resection of metastatic lymph nodes...
October 11, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/29027288/cxxc5-expression-in-prostate-cancer-implications-for-cancer-progression
#3
Ines Benedetti, Angelo M De Marzo, Jan Geliebter, Niradiz Reyes
Identification of genes specifically deregulated in prostate adenocarcinoma may lead to discovery of new oncogenes/tumour suppressors with clinical relevance for diagnosis, prognosis and/or therapy. CXXC5 is a gene encoding a retinoid-inducible nuclear factor, whose overexpression in breast tumours, metastatic malignant melanomas and papillary thyroid carcinoma has been recently reported. We previously found differential expression of CXXC5 transcripts in metastatic prostate cancer cell lines of both rat and human origin...
August 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/29019329/implications-of-observer-variation-in-gleason-scoring-of-prostate-cancer-on-clinical-management-a-collaborative-audit
#4
A Harbias, E Salmo, A Crump
BACKGROUND: Prostate cancer is the most frequently diagnosed cancer in men. Histological tumour grade is a strong predictor of outcome and helps determine what treatment options are offered. There are numerous studies on Inter-observer agreement/variability on prostate cancer grading. In this study, we were looking to establish if disconcordance between pathologists when grading prostate cancer, could affect treatment options offered to men. METHODS: In Greater Manchester West Cancer Sector, all prostate cancer biopsies undergo a central review by three pathologists with a special interest in urological pathology prior to referral for treatment at specialist centres...
September 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/29017178/cardiovascular-disease-risk-and-androgen-deprivation-therapy-in-patients-with-localised-prostate-cancer-a-prospective-cohort-study
#5
Reina Haque, Marianne UlcickasYood, Xiaoqing Xu, Andrea E Cassidy-Bushrow, Huei-Ting Tsai, Nancy L Keating, Stephen K Van Den Eeden, Arnold L Potosky
BACKGROUND: As androgen deprivation therapy (ADT) is increasingly being used in men with localised prostate cancer, our goal was to examine the association between ADT and the risk of cardiovascular disease (CVD). METHODS: We conducted a prospective cohort study using records of a large health-care system in California. The study included men with newly diagnosed localised prostate cancer (1998-2008) who initially underwent active surveillance (N=7637) and were followed through 2010...
October 10, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28994148/lincrna-p21-suppresses-development-of-human-prostate-cancer-through-inhibition-of-pkm2
#6
Xiaohai Wang, Yongzhi Xu, Xingjie Wang, Chenyi Jiang, Sha Han, Kai Dong, Mengjun Shen, Shujie Xia, Dongliang Xu
OBJECTIVES: Previously, we found that long intergenic non-coding RNA-p21 (lincRNA-p21) inhibited the development of human prostate cancer. However, the underlying molecular mechanisms are poorly understood. Here, we attempted to investigate the downstream targets of lincRNA-p21 in prostate cancer. MATERIALS AND METHODS: Expression of lincRNA-p21 and PKM2 was determined by qRT-PCR and Western blot. Lentivirus expressing shPKM2 or shCtrl was used to explore the role of PKM2 on the enhanced cell proliferation and glycolysis of lincRNA-p21-silenced prostate cancer cells...
October 9, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28990218/a-polysaccharide-from-dictyophora-indusiata-inhibits-the-immunosuppressive-function-of-cancer-associated-fibroblasts
#7
Shuyu Han, Chaoxiong Ma, Minghua Hu, Yuanyuan Wang, Fangli Ma, Ning Tao, Zhihai Qin
Reversing the function of cancer-associated fibroblasts (CAFs) may improve the efficacy of cancer therapy. Here, we isolated a novel polysaccharide from Dictyophora indusiata (ZSP4) and examined its effects on the function of prostate CAFs. The supernatant of prostate CAFs can stimulate the proliferation of immune cells and inhibit the growth of CD4+/CD8+ T cells. However, after ZSP4 stimulation, the functions of prostate CAFs were inhibited. The mechanism experiment shows that ZSP4 can stimulate prostate CAFs by down-regulating the expression of α-smooth muscle actin...
October 8, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28988891/cancer-deaths-due-to-lack-of-universal-access-to-radiotherapy-in-the-brazilian-public-health-system
#8
L C Mendez, F Y Moraes, G Dos S Fernandes, E Weltman
AIMS: Radiotherapy plays a fundamental role in the treatment of cancer. Currently, the Brazilian public health system cannot match the national radiotherapy demand and many patients requiring radiotherapy are never exposed to this treatment. This study estimated the number of preventable deaths in the public health system if access to radiotherapy was universal. MATERIALS AND METHODS: Incidence rates for the year 2016 provided by Instituto Nacional de Cancer were used in this analysis...
October 5, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28982844/clinical-potential-of-statins-in-prostate-cancer-radiation-therapy
#9
REVIEW
Jack Hutchinson, Laure Marignol
BACKGROUND/AIM: Statins are cholesterol- lowering drugs that have been shown to possess anti-tumour properties. Observational studies have shown that 3-hydroxy-3-methlyglutaryl coenzyme A reductase inhibitor (statin) use may be associated with reduced prostate cancer risk. Preclinical studies suggest that statins possess anticancer and radiosensitising properties. This review aims to determine the impact of statin use in the efficacy of radiation therapy and the therapeutic window in prostate cancer...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28981962/the-bmp-antagonist-noggin-is-produced-by-osteoblasts-in-response-to-the-presence-of-prostate-cancer-cells
#10
Huda F AlShaibi, Farid Ahmed, Clive Buckle, Ann Cm Fowles, Jalaluddin Awlia, Marco G Cecchini, Colby L Eaton
BACKGROUND: Bone metastasis is a key event responsible for morbidity in prostate cancer patients. Interactions between prostate cancer cells and the bone microenvironment facilitate survival of tumour cells and alter bone turnover, a process that is thought to enhance the growth of metastases in this site. This study aimed to test the hypothesis that the presence of tumours cells increases TGFβ signaling in bone and that this regulates the proliferation and differentiation of osteoblastic lineage cells in metastatic sites...
October 5, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28978344/the-expect-examining-exercise-prostate-cancer-and-circulating-tumour-cells-trial-study-protocol-for-a-randomised-controlled-trial
#11
Gráinne Sheill, Lauren Brady, Emer Guinan, Brian Hayes, Orla Casey, John Greene, Tatjana Vlajnic, Fidelma Cahill, Mieke Van Hemelrijck, Nicola Peat, Sarah Rudman, Juliette Hussey, Moya Cunningham, Liam Grogan, Thomas Lynch, Rustom P Manecksha, John McCaffrey, Lorelei Mucci, Orla Sheils, John O'Leary, Dearbhaile M O'Donnell, Ray McDermott, Stephen Finn
BACKGROUND: Prostate cancer (PrCa) is the second most common cancer in Ireland. Many men present with locally advanced or metastatic cancer for whom curative surgery is inappropriate. Advanced cancer patients are encouraged to remain physically active and therefore there is a need to investigate how patients with metastatic disease tolerate physical activity programmes. Physical activity reduces levels of systemic inflammatory mediators and so an aerobic exercise intervention may represent an accessible and cost-effective means of ameliorating the pro-inflammatory effects of obesity and subsequently decrease poor cancer-specific outcomes in this patient population...
October 4, 2017: Trials
https://www.readbyqxmd.com/read/28977728/intraductal-carcinoma-of-the-prostate-can-evade-androgen-deprivation-with-emergence-of-castrate-tolerant-cells
#12
Laura H Porter, Kohei Hashimoto, Mitchell G Lawrence, Carmel Pezaro, David Clouston, Hong Wang, Melissa Papargiris, Heather Thorne, Jason Li, Andrew Ryan, Sam Norden, Daniel Moon, Damien M Bolton, Shomik Sengupta, Mark Frydenberg, Declan G Murphy, Gail P Risbridger, Renea A Taylor
OBJECTIVES: To determine the relevance of intraductal carcinoma of the prostate (IDC-P) in advanced prostate cancer, we first examined whether IDC-P was originally present in patients who later developed advanced prostate cancer and then used patient-derived xenografts (PDXs) to investigate the response of IDC-P to androgen deprivation therapy (ADT). MATERIALS AND METHODS: We conducted a retrospective pathology review of IDC-P in primary prostate biopsy or surgery specimens from 38 men who subsequently developed advanced prostate cancer...
October 4, 2017: BJU International
https://www.readbyqxmd.com/read/28972962/igf-1r-associates-with-adverse-outcomes-after-radical-radiotherapy-for-prostate-cancer
#13
Tamara Aleksic, Clare Verrill, Richard J Bryant, Cheng Han, Andrew Ross Worrall, Laurent Brureau, Stephane Larré, Geoff S Higgins, Fahad Fazal, Ahmad Sabbagh, Syed Haider, Francesca M Buffa, David Cole, Valentine M Macaulay
BACKGROUND: Activated type 1 insulin-like growth factor receptors (IGF-1Rs) undergo internalisation and nuclear translocation, promoting cell survival. We previously reported that IGF-1R inhibition delays DNA damage repair, sensitising prostate cancer cells to ionising radiation. Here we tested the clinical relevance of these findings. METHODS: We assessed associations between IGF-1R and clinical outcomes by immunohistochemistry in diagnostic biopsies of 136 men treated with 55-70 Gy external beam radiotherapy for prostate cancer, comparing results with publicly available transcriptional data in surgically treated patients...
October 3, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28961847/intratumoural-evolutionary-landscape-of-high-risk-prostate-cancer-the-progeny-study-of-genomic-and-immune-parameters
#14
M Linch, G Goh, C Hiley, Y Shanmugabavan, N McGranahan, A Rowan, Y N S Wong, H King, A Furness, A Freeman, J Linares, A Akarca, J Herrero, R Rosenthal, N Harder, G Schmidt, G A Wilson, N J Birkbak, R Mitter, S Dentro, P Cathcart, M Arya, E Johnston, R Scott, M Hung, M Emberton, G Attard, Z Szallasi, S Punwani, S A Quezada, T Marafioti, M Gerlinger, H U Ahmed, C Swanton
Background: Intratumoural heterogeneity (ITH) is well recognised in prostate cancer (PC), but its role in high-risk disease is uncertain. A prospective, single-arm, translational study using targeted multiregion prostate biopsies was carried out to study genomic and T-cell ITH in clinically high-risk PC aiming to identify drivers and potential therapeutic strategies. Patients and methods: Forty-nine men with elevated prostate-specific antigen and multiparametric-magnetic resonance imaging detected PC underwent image-guided multiregion transperineal biopsy...
October 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28959385/dominant-immunosuppression-of-dendritic-cell-function-by-prostate-cancer-derived-exosomes
#15
Josephine Salimu, Jason Webber, Mark Gurney, Saly Al-Taei, Aled Clayton, Zsuzsanna Tabi
Exosomes are a distinct population of extracellular vesicles of endocytic origin with a protein repertoire similar to the parent cell. Although tumour-derived exosomes harbour immunosuppressive characteristics, they also carry tumour antigens and thus potentially contribute to immune activation. The aim of this study was to examine the impact of prostate cancer exosomes on tumour antigen cross-presentation. DU145 cells, transduced with shRNA to knockdown Rab27a (DU145(KD)) that inhibits exosome secretion, triggered significantly stronger tumour-antigen-specific T cell responses when loaded onto dendritic cells (DC) than control DU145 cells...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28953875/discovery-of-a-selective-catalytic-p300-cbp-inhibitor-that-targets-lineage-specific-tumours
#16
Loren M Lasko, Clarissa G Jakob, Rohinton P Edalji, Wei Qiu, Debra Montgomery, Enrico L Digiammarino, T Matt Hansen, Roberto M Risi, Robin Frey, Vlasios Manaves, Bailin Shaw, Mikkel Algire, Paul Hessler, Lloyd T Lam, Tamar Uziel, Emily Faivre, Debra Ferguson, Fritz G Buchanan, Ruth L Martin, Maricel Torrent, Gary G Chiang, Kannan Karukurichi, J William Langston, Brian T Weinert, Chunaram Choudhary, Peter de Vries, John H Van Drie, David McElligott, Ed Kesicki, Ronen Marmorstein, Chaohong Sun, Philip A Cole, Saul H Rosenberg, Michael R Michaelides, Albert Lai, Kenneth D Bromberg
The dynamic and reversible acetylation of proteins, catalysed by histone acetyltransferases (HATs) and histone deacetylases (HDACs), is a major epigenetic regulatory mechanism of gene transcription and is associated with multiple diseases. Histone deacetylase inhibitors are currently approved to treat certain cancers, but progress on the development of drug-like histone actyltransferase inhibitors has lagged behind. The histone acetyltransferase paralogues p300 and CREB-binding protein (CBP) are key transcriptional co-activators that are essential for a multitude of cellular processes, and have also been implicated in human pathological conditions (including cancer)...
September 27, 2017: Nature
https://www.readbyqxmd.com/read/28952599/corrigendum-alternative-splicing-promotes-tumour-aggressiveness-and-drug-resistance-in-african-american-prostate-cancer
#17
Bi-Dar Wang, Kristin Ceniccola, SuJin Hwang, Ramez Andrawis, Anelia Horvath, Jennifer A Freedman, Jacqueline Olender, Stefan Knapp, Travers Ching, Lana Garmire, Vyomesh Patel, Mariano A Garcia-Blanco, Steven R Patierno, Norman H Lee
This corrects the article DOI: 10.1038/ncomms15921.
September 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28948333/phase-i-ii-trial-of-dendritic-cell-based-active-cellular-immunotherapy-with-dcvac-pca-in-patients-with-rising-psa-after-primary-prostatectomy-or-salvage-radiotherapy-for-the-treatment-of-prostate-cancer
#18
Jitka Fucikova, Michal Podrazil, Ladislav Jarolim, Pavla Bilkova, Michal Hensler, Etienne Becht, Zdenka Gasova, Jana Klouckova, Jana Kayserova, Rudolf Horvath, Anna Fialova, Katerina Vavrova, Klara Sochorova, Daniela Rozkova, Radek Spisek, Jirina Bartunkova
OBJECTIVE: Immunotherapy of cancer has the potential to be effective mostly in patients with a low tumour burden. Rising PSA (prostate-specific antigen) levels in patients with prostate cancer represents such a situation. We performed the present clinical study with dendritic cell (DC)-based immunotherapy in this patient population. MATERIALS AND METHODS: The single-arm phase I/II trial registered as EudraCT 2009-017259-91 involved 27 patients with rising PSA levels...
September 25, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28948139/the-role-of-biomarkers-in-the-management-of-bone-homing-malignancies
#19
REVIEW
Stella D'Oronzo, Janet Brown, Robert Coleman
Bone represents a common site of metastasis from several solid tumours, including breast, prostate and lung malignancies. The onset of bone metastases (BM) is associated not only with serious skeletal complications, but also shortened overall survival, owing to the lack of curative treatment options for late-stage cancer. Despite the diagnostic advances, BM detection often occurs in the symptomatic stage, underlining the need for novel strategies aimed at the early identification of high-risk patients. To this purpose, both bone turnover and tumour-derived markers are being investigated for their potential diagnostic, prognostic and predictive roles...
November 2017: Journal of Bone Oncology
https://www.readbyqxmd.com/read/28947891/co-existence-of-mucin-producing-urothelial-type-adenocarcinoma-of-the-prostate-and-inverted-papilloma-of-the-bladder
#20
Xiao-Nan Mu, Si-Jun Wang, Zhi-Gang Sun, Min Zhang, Zhe Li, Long-Yang Zhang
Adenocarcinoma of prostate with mucinous differentiation arising in the male urethra is extremely rare, with only 21 cases reported in the previous literature. A diagnosis of mucin-producing urothelial carcinoma of the prostate is based on the pathology, immunohistochemistry, and clinical examination by excluding the secondary adenocarcinoma of the prostate. We present a case of unexpected mucinous urothelial carcinoma of prostate with co-existing inverted papilloma of bladder in a 57-year-old man. The patient underwent transurethral resection of the prostate (TURP) and transurethral resection of a bladder tumour (TUR-Bt), and the pathologic result showed mucinous prostate carcinoma and bladder inverted papilloma...
2017: Contemporary Oncology Współczesna Onkologia
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