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https://www.readbyqxmd.com/read/28816267/-nuclear-export-signal-of-androgen-receptor-regulated-of-androgen-receptor-stability-in-prostate-cancer
#1
Y Q Gong, C J Zhang, S M He, X S Li, L Q Zhou, Y L Guo
OBJECTIVE: To investigate the mechanisms of nuclear export signal of androgen receptor (NES(AR)) in the regulation of androgen receptor (AR) protein expression and stability in prostate cancer. METHODS: The green fluorescent protein fusion protein expression vectors pEGFP-AR(1-918aa), pEGFP-NES(AR) (743-817aa), pEGFP-NAR (1-665aa) and pEGFP-NAR-NES(AR), and lysine mutants of NES(AR) pEGFP-NES(AR) K776R, pEGFP-NES(AR) K807R and pEGFP-NES(AR) K776R/K807R, were transiently transfected into prostate cancer cell line PC3...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28806522/development-of-a-recombinant-multifunctional-biomacromolecule-for-targeted-gene-transfer-to-prostate-cancer-cells
#2
Arash Hatefi, Zahra Karjoo, Alireza Nomani
The objective of this study was to genetically engineer a fully functional single chain fusion peptide composed of motifs from diverse biological and synthetic origins that can perform multiple tasks including DNA condensation, cell targeting, cell transfection, particle shielding from immune system and effective gene transfer to prostate tumors. To achieve the objective, a single chain biomacromolecule (vector) consisted of four repetative units of histone H2A peptide, fusogenic peptide GALA, short elastin-like peptide and PC-3 cell targeting peptide was designed...
August 14, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28806322/reduced-field-of-view-diffusion-weighted-magnetic-resonance-imaging-of-the-prostate-at-3-tesla-comparison-with-standard-echo-planar-imaging-technique-for-image-quality-and-tumor-assessment
#3
Tsutomu Tamada, Justin M Ream, Ankur M Doshi, Samir S Taneja, Andrew B Rosenkrantz
OBJECTIVE: The purpose of this study was to compare image quality and tumor assessment at prostate magnetic resonance imaging (MRI) between reduced field-of-view diffusion-weighted imaging (rFOV-DWI) and standard DWI (st-DWI). METHODS: A total of 49 patients undergoing prostate MRI and MRI/ultrasound fusion-targeted biopsy were included. Examinations included st-DWI (field of view [FOV], 200 × 200 mm) and rFOV-DWI (FOV, 140 × 64 mm) using a 2-dimensional (2D) spatially-selective radiofrequency pulse and parallel transmission...
August 12, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28806263/18f-dcfbc-prostate-specific-membrane-antigen-targeted-pet-ct-imaging-in-localized-prostate-cancer-correlation-with-multiparametric-mri-and-histopathology
#4
Baris Turkbey, Esther Mena, Liza Lindenberg, Stephen Adler, Sandra Bednarova, Rose Berman, Anita T Ton, Yolanda McKinney, Philip Eclarinal, Craig Hill, George Afari, Sibaprasad Bhattacharyya, Ronnie C Mease, Maria J Merino, Paula M Jacobs, Bradford J Wood, Peter A Pinto, Martin G Pomper, Peter L Choyke
PURPOSE: To assess the ability of (N-[N-[(S)-1,3-dicarboxypropyl]carbamoyl]-4-F-fluorobenzyl-L-cysteine) (F-DCFBC), a prostate-specific membrane antigen-targeted PET agent, to detect localized prostate cancer lesions in correlation with multiparametric MRI (mpMRI) and histopathology. METHODS: This Health Insurance Portability and Accountability Act of 1996-compliant, prospective, institutional review board-approved study included 13 evaluable patients with localized prostate cancer (median age, 62...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28802831/validation-of-a-targeted-rna-sequencing-assay-for-kinase-fusion-detection-in-solid-tumors
#5
Julie W Reeser, Dorrelyn Martin, Jharna Miya, Esko A Kautto, Ezra Lyon, Eliot Zhu, Michele R Wing, Amy Smith, Matthew Reeder, Eric Samorodnitsky, Hannah Parks, Karan R Naik, Joseph Gozgit, Nicholas Nowacki, Kurtis D Davies, Marileila Varella-Garcia, Lianbo Yu, Aharon G Freud, Joshua Coleman, Dara L Aisner, Sameek Roychowdhury
Kinase gene fusions are important drivers of oncogenic transformation and can be inhibited with targeted therapies. Clinical grade diagnostics using RNA sequencing to detect gene rearrangements in solid tumors are limited, and the few that are available require prior knowledge of fusion break points. To address this, we have analytically validated a targeted RNA sequencing assay (OSU-SpARKFuse) for fusion detection that interrogates complete transcripts from 93 kinase and transcription factor genes. From a total of 74 positive and 36 negative control samples, OSU-SpARKFuse had 93...
August 8, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28802000/pmepa1-induced-by-rankl-p38-mapk-pathway-has-a-novel-role-in-osteoclastogenesis
#6
Noboru Funakubo, Xianghe Xu, Toshio Kukita, Seiji Nakamura, Hiroshi Miyamoto, Akiko Kukita
Osteoclasts are multinucleated cells formed by fusion of preosteoclasts (POCs) derived from cells of the monocyte/macrophage lineage. We have reported a culture system that supports the formation of POCs from stroma-depleted rat bone marrow cells. Global gene expression analysis of this culture system identified genes highly expressed in POCs. Here, we have analyzed the expression and function of one of these highly expressed genes, prostate transmembrane protein androgen induced 1 (Pmepa1), a target of TGF-β and binds Nedd4 ubiquitin ligase, which plays a role in intracellular trafficking...
August 12, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28799090/prostate-cancer-detection-among-readers-with-different-degree-of-experience-using-ultra-high-b-value-diffusion-weighted-imaging-is-a-non-contrast-protocol-sufficient-to-detect-significant-cancer
#7
D Hausmann, N Aksöz, J von Hardenberg, T Martini, N Westhoff, S Buettner, S O Schoenberg, P Riffel
AIM: To evaluate the accuracy of a T2-weighted (T2w) - and a parallel transmit zoomed b = 2000 s/mm2 (b2000) - diffusion-weighted imaging sequence among three readers with different degrees of experience for prostate cancer (Pca) detection. METHODS: Ninety-three patients with suspected Pca were enrolled. For b2000 a two-dimensional spatially-selective RF pulse using an echo-planar transmit trajectory was applied, and the field of view (FOV) was reduced to one-third...
August 10, 2017: European Radiology
https://www.readbyqxmd.com/read/28797178/mri-fusion-targeted-transrectal-prostate-biopsy-and-the-role-of-prostate-specific-antigen-density-and-prostate-health-index-for-the-detection-of-clinically-significant-prostate-cancer-in-southeast-asian-men
#8
Teck Wei Tan, Keng Siang Png, Chau Hung Lee, Arianto Yuwono, Yuyi Yeow, Kian-Tai Chong, Yee Mun Lee, Cher Heng Tan, Yung Khan Tan
OBJECTIVES: To test the hypothesis that targeted biopsy has a higher detection rate for clinically significant prostate (csPCa) than systematic biopsy. We defined csPCa as any Gleason sum ≥ 7 cancer. In patients with Prostate Imaging - Reporting and Data System (PI-RADS) 3 lesions, to determine if factors such as PSA density (PSAD) and prostate health index (PHI) can predict csPCa and help select patients for biopsy. MATERIALS AND METHODS: We report the first series of targeted biopsies in Southeast Asian men, with comparison against systematic biopsy...
August 11, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28783264/high-cancer-detection-rate-using-cognitive-fusion-targeted-transperineal-prostate-biopsies
#9
Snir Dekalo, Haim Matzkin, Nicola J Mabjeesh
OBJECTIVE: MRI of the prostate improves diagnostic accuracy of prostate cancer. Different fusion approaches with transrectal ultrasound images are employed. To determine detection rate of prostate cancer in men undergoing transperineal MRIbased cognitive fusion biopsy. MATERIALS AND METHODS: One hundred and sixty-four consecutive men underwent a multiple-core prostate transperineal biopsy. Univariable and multivariable logistic regression analyses were used to address the relationship between clinical parameters and prostate cancer detection rate...
July 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28783165/tmprss2-erg-fusion-co-opts-master-transcription-factors-and-activates-notch-signaling-in-primary-prostate-cancer
#10
Ken J Kron, Alexander Murison, Stanley Zhou, Vincent Huang, Takafumi N Yamaguchi, Yu-Jia Shiah, Michael Fraser, Theodorus van der Kwast, Paul C Boutros, Robert G Bristow, Mathieu Lupien
TMPRSS2-ERG (T2E) structural rearrangements typify ∼50% of prostate tumors and result in overexpression of the ERG transcription factor. Using chromatin, genomic and expression data, we show distinct cis-regulatory landscapes between T2E-positive and non-T2E primary prostate tumors, which include clusters of regulatory elements (COREs). This difference is mediated by ERG co-option of HOXB13 and FOXA1, implementing a T2E-specific transcriptional profile. We also report a T2E-specific CORE on the structurally rearranged ERG locus arising from spreading of the TMPRSS2 locus pre-existing CORE, assisting in its overexpression...
August 7, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28781797/effect-of-modern-high-quality-prostate-intensity-modulated-radiation-therapy-on-outcome-evidence-from-a-community-radiation-oncology-program
#11
Johnny Kao, Amanda Zucker, Jonathan Timmins, Shankar Taramangalam, Jeffrey Pettit, Aaron J Woodall, Edward Loizides, Andrew T Wong
Radiation technique for prostate cancer has continuously evolved over the past several decades. The aim of the present study was to describe the effects of implementing modern prostate intensity-modulated radiation therapy (M-IMRT) on dosimetry and outcome. Between January 2010 and April 2012, 48 consecutive patients were treated with conventional prostate IMRT (C-IMRT) to a dose of 81 Gy. Between May 2012 and April 2015, 50 consecutive patients were treated with M-IMRT to the entire prostate to a dose of 75...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28777073/multimodality-image-fusion-with-psma-pet-ct-and-high-intensity-focused-ultrasound-focal-therapy-for-primary-diagnosis-and-management-of-prostate-cancer-a-planned-research-initiative
#12
Marcia C Javitt, Alexander Kravtsov, Zohar Keidar, Sobhi Abadi, Gilad Amiel
Recent developments in diagnostic imaging herald a new approach to diagnosis and management of prostate cancer. Multimodality fusion that combines anatomic with functional imaging data has surpassed either of the two alone. This opens up the possibility to "find and fix" malignancy with greater accuracy than ever before. This is particularly important for prostate cancer because it is the most common male cancer in most developed countries. This article describes technical advances under investigation at our institution and others using multimodality image fusion of magnetic resonance imaging (MRI), transrectal ultrasound (TRUS), and PSMA PET/CT (defined as the combination of prostate-specific membrane antigen [PSMA], positron emission tomography [PET], and computed tomography [CT]) for personalized medicine in the diagnosis and focal therapy of prostate cancer with high-intensity focused ultrasound (HiFUS)...
August 3, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28762373/changes-in-prostate-cancer-detection-rate-of-mri-trus-fusion-vs-systematic-biopsy-over-time-evidence-of-a-learning-curve
#13
B Calio, A Sidana, D Sugano, S Gaur, A Jain, M Maruf, S Xu, P Yan, J Kruecker, M Merino, P Choyke, B Turkbey, B Wood, P Pinto
BACKGROUND: To determine the effect of urologist and radiologist learning curves and changes in MRI-TRUS fusion platform during 9 years of NCI's experience with multiparametric magnetic resonance imaging (mpMRI)/TRUS fusion biopsy. METHODS: A prospectively maintained database of patients undergoing mpMRI followed by fusion biopsy (Fbx) and systematic biopsy (Sbx) from 2007 to 2016 was reviewed. The patients were stratified based on the timing of first biopsy. Cohort 1 (7/2007-12/2010) accounted for learning curve...
August 1, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28754853/dna-repair-deregulation-in-discrete-prostate-cancer-lesions-identified-on-multi-parametric-mri-and-targeted-by-mri-ultrasound-fusion-guided-biopsy
#14
Caleb R Dulaney, Soroush Rais-Bahrami, Debra Della Manna, Jennifer B Gordetsky, Jeffrey W Nix, Eddy S Yang
Prostate cancer is histologically and molecularly heterogeneous. Clinically significant disease is often driven by dominant intra-prostatic lesions (IPLs). Prostate cancers cluster into molecular phenotypes with substantial genetic heterogeneity making pathway-based molecular analysis appealing. MRI/ultrasound fusion biopsy provides a unique opportunity to characterize tumor biology of discrete lesions at diagnosis. This study determined the feasibility of pathway-based gene expression analysis of prostate biopsies and characterized cancer pathway deregulation...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28753844/transcriptome-wide-analysis-of-magnetic-resonance-imaging-targeted-biopsy-and-matching-surgical-specimens-from-high-risk-prostate-cancer-patients-treated-with-radical-prostatectomy-the-target-must-be-hit
#15
Jan Philipp Radtke, Mandeep Takhar, David Bonekamp, Claudia Kesch, Nicholas Erho, Marguerite du Plessis, Christine Buerki, Kaye Ong, Elai Davicioni, Markus Hohenfellner, Boris A Hadaschik
BACKGROUND: The most suspicious lesions on multiparametric magnetic resonance imaging (MRI) may be representative of final pathology. OBJECTIVE: We connect imaging with high-precision spatial annotation of biopsies and genomic cancer signatures to compare the genomic signals of the index lesion and biopsy cores of adjacent and far away locations. DESIGN, SETTING, AND PARTICIPANTS: Eleven patients diagnosed with high-risk prostate cancer on MRI/transrectal ultrasound-fusion biopsy (Bx) and treated with radical prostatectomy (RP)...
January 26, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28749070/diagnostic-accuracy-of-magnetic-resonance-imaging-mri-5-point-likert-scoring-system-evaluated-by-the-result-of-mri-ultrasonography-image-fusion-targeted-biopsy-of-the-prostate
#16
Toshitaka Shin, Thomas B Smyth, Osamu Ukimura, Nariman Ahmadi, Andre Luis de Castro Abreu, Chisato Ohe, Masakatsu Oishi, Hiromitsu Mimata, Inderbir S Gill
OBJECTIVE: To evaluate the accuracy of MRI based Likert scoring system in detection of clinically significant prostate cancer (CSPC) using MRI/Ultrasonography (US) image-fusion targeted biopsy (FTB) as a reference standard. PATIENTS AND METHODS: We retrospectively reviewed 1218 MRI-lesions in 629 patients who underwent subsequent MRI/US FTB between 10/2012 and 8/2015. 3-Tesla MRI was independently reported by 1 of 8 radiologists with varying levels of experience and scored on a 5-point Likert scale...
July 27, 2017: BJU International
https://www.readbyqxmd.com/read/28747165/increased-ercc1-expression-is-linked-to-chromosomal-aberrations-and-adverse-tumor-biology-in-prostate-cancer
#17
Frank Jacobsen, Billurvan Taskin, Nathaniel Melling, Charlotte Sauer, Corinna Wittmer, Claudia Hube-Magg, Martina Kluth, Ronald Simon, Dirk Pehrke, Burkhard Beyer, Thomas Steuber, Imke Thederan, Guido Sauter, Thorsten Schlomm, Waldemar Wilczak, Katharina Möller, Sören A Weidemann, Susanne Burdak-Rothkamm
BACKGROUND: Animal model experiments have suggested a role of the DNA repair protein ERCC1 (Excision Repair Cross-Complementation Group 1) in prostate cancer progression. METHODS: To better understand the impact of ERCC1 protein expression in human prostate cancer, a preexisting tissue microarray (TMA) containing more than 12,000 prostate cancer specimens was analyzed by immunohistochemistry and data were compared with tumor phenotype, PSA recurrence and several of the most common genomic alterations (TMPRSS2:ERG fusions: deletions of PTEN, 6q, 5q, 3p)...
July 26, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28736746/malakoplakia-of-the-prostate-as-a-mimicker-of-prostate-cancer-on-prostate-health-index-and-magnetic-resonance-imaging-fusion-prostate-biopsy-a-case-report
#18
Nathaniel H Heah, Teck Wei Tan, Yung Khan Tan
Background: Isolated malakoplakia of the prostate is a rare inflammatory condition that has been clinically mistaken for prostatic malignancies. The development of Prostate Imaging Reporting and Data System (PI-RADS) classifications, and Prostate Health Index (PHI) has led to more accurate diagnosis of clinically significant disease and stratification of patients that may be at risk of prostate cancer. Case Presentation: We present a case of a 75-year-old male who was on follow-up with our hospital for elevated prostate specific antigen (PSA)...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28735018/safety-and-feasibility-of-direct-mri-guided-transperineal-prostate-biopsy-using-a-novel-mri-safe-robotic-device
#19
Mark W Ball, Ashley E Ross, Kamyar Ghabili, Chunwoo Kim, Changhan Jun, Doru Petrisor, Li Pan, Jonathan I Epstein, Katarzyna J Macura, Dan S Stoianovici, Mohamad E Allaf
OBJECTIVE: To evaluate safety and feasibility in a first in human trial of direct MRI-guided prostate biopsy using a novel robotic device. METHODS: MrBot is an MRI-safe robotic device constructed entirely of nonconductive, nonmetallic, and nonmagnetic materials, developed by our group. A safety and feasibility clinical trial was designed to assess the safety and feasibility of direct MRI-guided biopsy with MrBot and determine its targeting accuracy. Men with elevated PSA, prior negative prostate biopsy and cancer suspicious region (CSR) on MRI were enrolled in the study...
July 19, 2017: Urology
https://www.readbyqxmd.com/read/28728994/a-comprehensive-analysis-of-cribriform-morphology-on-mr-us-fusion-biopsy-correlated-with-radical-prostatectomy-specimens
#20
Matthew Truong, Changyong Feng, Gary Hollenberg, Eric Weinberg, Edward M Messing, Hiroshi Miyamoto, Thomas P Frye
PURPOSE: Recently, a large body of evidence has emerged recognizing that cribriform morphology is an aggressive prostate cancer morphological pattern associated with higher cancer-specific mortality. In a comprehensive analysis, we compared traditional and contemporary prostate biopsy techniques for detection of prostate cancer with cribriform morphology and used radical prostatectomy as a reference standard. MATERIALS AND METHODS: A retrospectively maintained single institution multiparametric MRI (mpMRI) database (n = 1,001) was queried to identify 240 patients who underwent MR/US fusion targeted biopsy (TB) and concurrent systematic biopsy (SB) from December 2014 to December 2016...
July 17, 2017: Journal of Urology
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