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https://www.readbyqxmd.com/read/28524002/mirna-expression-in-bladder-cancer-and-their-potential-role-in-clinical-practice
#1
Ana Blanca, Liang Cheng, Rodolfo Montironi, Holger Moch, Francesco Massari, Michelangelo Fiorentino, Maria Rosaria Raspollini, Marina Scarpelli, Antonio Lopez-Beltran
To date more than 3000 miRNA sequences have been described in humans and reg¬istered at miRBase since their discovery. However, the functions of only a few of these miRNAs have been experimentally determined using deep sequencing technology. Aberrant miRNA expression has been associated with differentiation, invasion and metastasis in several cancers. In this context, recent reports have suggested that miRNAs play important roles in the regulation of target genes by binding to complementary regions of messenger transcripts to repress their translation or regulate degradation...
May 18, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28487492/sequencing-of-cancer-cell-subpopulations-identifies-micrometastases-in-a-bladder-cancer-patient
#2
Kris Prado, Kelvin X Zhang, Matteo Pellegrini, Arnold I Chin
PURPOSE: Pathologic staging of bladder cancer patients remains a challenge. Standard-of-care histology exhibits limited sensitivity in detection of micrometastases, which can increase risk of cancer progression and delay potential adjuvant therapies. Here, we sought to develop a proof of concept novel molecular approach to improve detection of cancer micrometastasis. EXPERIMENTAL DESIGN: We combined fluorescence activated cell sorting and next-generation sequencing and performed whole-exome sequencing of total cancer cells and cancer cell subpopulations in multiple tumor specimens and regional lymph nodes in a single patient with muscle-invasive urothelial carcinoma of the bladder following radical cystectomy...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28456080/radiosynthesis-and-biological-evaluation-of-n-2-18-f-fluoropropionyl-3-4-dihydroxy-l-phenylalanine-as-a-pet-tracer-for-oncologic-imaging
#3
Caihua Tang, Dahong Nie, Ganghua Tang, Siyuan Gao, Shaoyu Liu, Fuhua Wen, Xiaolan Tang
INTRODUCTION: Several (11)C and (18)F labeled 3,4-dihydroxy-l-phenylalanine (l-DOPA) analogues have been used for neurologic and oncologic diseases, especially for brain tumors and neuroendocrine tumors PET imaging. However, (18)F-labeled N-substituted l-DOPA analogues have not been reported so far. In the current study, radiosynthesis and biological evaluation of a new (18)F-labeled l-DOPA analogue, N-(2-[(18)F]fluoropropionyl)-3,4-dihydroxy-l-phenylalanine ([(18)F]FPDOPA) for tumor PET imaging are performed...
April 7, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28455960/a-to-i-rna-editing-of-blcap-lost-the-inhibition-to-stat3-activation-in-cervical-cancer
#4
Wen Chen, Wenrong He, Hongbing Cai, Bicheng Hu, Caishang Zheng, Xianliang Ke, Li Xie, Zhenhua Zheng, Xinxing Wu, Hanzhong Wang
Bladder cancer-associated protein (BLCAP) gene is a highly conserved gene with tumor-suppressor function in different carcinomas. It is also a novel ADAR-mediated editing substrate undergoes multiple A-to-I RNA editing events. Although the anti-tumorigenic role of BLCAP has been examined in preliminarily studies, the relationship between BLCAP function and A-to-I RNA editing in cervical carcinogenesis still require further exploration. Herein, we analyzed the coding sequence of BLCAP transcripts in 35 paired cervical cancer samples using high-throughput sequencing...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429075/toward-personalized-management-in-bladder-cancer-the-promise-of-novel-molecular-taxonomy
#5
REVIEW
Marie-Lisa Eich, Lars Dyrskjøt, George J Netto
Empowered by the recent advances in next generation sequencing and bioinformatics technology, an unprecedented wave of integrated transcriptomic and genomic studies have impacted the field of bladder cancer. These studies not only have confirmed previously charted genetic pathways in bladder cancer development but also have led to the discovery of numerous additional crucial driver genetic alterations. As a result, a novel genomic-based taxonomy is emerging that promises to better define clinically relevant intrinsic subtypes of bladder cancer...
April 21, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28419548/detection-of-prostate-cancer-specific-transcripts-in-extracellular-vesicles-isolated-from-post-dre-urine
#6
Kathryn L Pellegrini, Dattatraya Patil, Kristen J S Douglas, Grace Lee, Kathryn Wehrmeyer, Mersiha Torlak, Jeremy Clark, Colin S Cooper, Carlos S Moreno, Martin G Sanda
BACKGROUND: The measurement of gene expression in post-digital rectal examination (DRE) urine specimens provides a non-invasive method to determine a patient's risk of prostate cancer. Many currently available assays use whole urine or cell pellets for the analysis of prostate cancer-associated genes, although the use of extracellular vesicles (EVs) has also recently been of interest. We investigated the expression of prostate-, kidney-, and bladder-specific transcripts and known prostate cancer biomarkers in urine EVs...
June 2017: Prostate
https://www.readbyqxmd.com/read/28388561/cell-free-microrna-expression-signatures-in-urine-serve-as-novel-noninvasive-biomarkers-for-diagnosis-and-recurrence-prediction-of-bladder-cancer
#7
Lutao Du, Xiumei Jiang, Weili Duan, Rui Wang, Lishui Wang, Guixi Zheng, Keqiang Yan, Lili Wang, Juan Li, Xin Zhang, Hongwei Pan, Yongmei Yang, Chuanxin Wang
Urinary microRNAs (miRNAs) are potential biomarkers for the noninvasive diagnosis of bladder cancer (BC). In this study, we aimed to develop a urinary miRNAs panel for diagnosing and predicting recurrence of BC. Genome-wide miRNAs analysis by deep sequencing followed by two phases of quantitative real-time PCR assays were performed on urine supernatant of 276 BC patients and 276 controls. We identified a seven-miRNA panel (miR-7-5p, miR-22-3p, miR-29a-3p, miR-126-5p, miR-200a-3p, miR-375, and miR-423-5p) that provided high diagnostic accuracy of BC with an AUC of 0...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28386678/identification-of-novel-potential-genetic-predictors-of-urothelial-bladder-carcinoma-susceptibility-in-pakistani-population
#8
Syeda Hafiza Benish Ali, Kashif Sardar Bangash, Abdur Rauf, Muhammad Younis, Khursheed Anwar, Raja Khurram, Muhammad Athar Khawaja, Maleeha Azam, Abid Ali Qureshi, Saeed Akhter, Lambertus A Kiemeney, Raheel Qamar
Urothelial bladder carcinoma (UBC) is the most common among urinary bladder neoplasms. We carried out a preliminary study to determine the genetic etiology of UBC in Pakistani population, for this 25 sequence variants from 17 candidate genes were studied in 400 individuals by using polymerase chain reaction-based techniques. Multivariate logistic regression analysis was performed for association analysis of the overall data as well as the data stratified by smoking status, tumor grade and tumor stage. Variants of GSTM1, IGFBP3, LEPR and ACE were found to be associated with altered UBC risk in the overall comparison...
April 6, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28357911/advances-in-urothelial-bladder-cancer-immunotherapy-dawn-of-a-new-age-of-treatment
#9
REVIEW
Fouad Aoun, Elie El Rassy, Tarek Assi, Simone Albisinni, Joseph Katan
Urothelial bladder cancer displays a high number of somatic mutations that render these tumors more responsive to immunotherapy. Several immunotherapeutic agents were examined in patients with advanced stage urothelial bladder cancer and recently atezolizumab - an (PDL-1) immune checkpoint inhibitor antibody - was approved for the treatment of patients with metastatic disease progressing after platinum combination therapy. Despite the great success, there are still some unanswered questions and ongoing trials that are in progress to define the role of combination therapy and sequencing strategies...
March 2017: Immunotherapy
https://www.readbyqxmd.com/read/28348108/comprehensive-somatic-genome-alterations-of-urachal-carcinoma
#10
Seungchul Lee, Jingu Lee, Sung Hoon Sim, Yeonghun Lee, Kyung Chul Moon, Cheol Lee, Woong-Yang Park, Nayoung Kd Kim, Se-Hoon Lee, Hyunju Lee
BACKGROUND: Urachal cancer is a rare cancer that develops in the urachus. Because of its rarity, standard treatment therapies for urachal cancer are not established, and chemotherapeutic regimens for bladder cancer have been unsuccessful for patients with urachal cancer. Hence, we aim to understand a systematic molecular characterisation of urachal cancer. METHODS: We identified somatic single-nucleotide variations (SNVs)/indels and somatic copy number aberrations (SCNAs) in the 17 patients by using whole-exome sequencing (WES) and OncoScan platform (Affymetrix) as follows: tumour-normal paired sequencing (WES, n=10), tumour-only sequencing (WES, n=1; targeted deep sequencing, n=16), and OncoScan (n=17)...
March 27, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28341852/profiling-of-long-non-coding-rnas-identifies-linc00958-and-linc01296-as-candidate-oncogenes-in-bladder-cancer
#11
Anna Katharina Seitz, Lise Lotte Christensen, Emil Christensen, Kasper Faarkrog, Marie Stampe Ostenfeld, Jakob Hedegaard, Iver Nordentoft, Morten Muhlig Nielsen, Johan Palmfeldt, Michelle Thomson, Michael Theis Solgaard Jensen, Roman Nawroth, Tobias Maurer, Torben Falck Ørntoft, Jørgen Bjerggaard Jensen, Christian Kroun Damgaard, Lars Dyrskjøt
Aberrant expression of long non-coding RNAs (lncRNAs) has been regarded as a critical component in bladder cancer (BC) and lncRNAs have been associated with BC development and progression although their overall expression and functional significance is still unclear. The aim of our study was to identify novel lncRNAs with a functional role in BC carcinogenesis. RNA-sequencing was used to identify aberrantly expressed lncRNAs in 8 normal and 72 BC samples. We identified 89 lncRNAs that were significantly dys-regulated in BC...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28324890/regulation-of-itga3-by-the-dual-stranded-microrna-199-family-as-a-potential-prognostic-marker-in-bladder-cancer
#12
Takashi Sakaguchi, Hirofumi Yoshino, Masaya Yonemori, Kazutaka Miyamoto, Satoshi Sugita, Ryosuke Matsushita, Toshihiko Itesako, Shuichi Tatarano, Masayuki Nakagawa, Hideki Enokida
BACKGROUND: Based on the microRNA (miRNA) signature of bladder cancer (BC) by deep sequencing, we recently found that several double-stranded mature miRNAs derived from the same pre-miRNAs were sufficiently expressed and acted as tumour suppressors by regulating common target genes in BC. Our deep-sequencing signature of BC showed that all miR-199 family members (miR-199a-3p/-5p and miR-199b-3p/-5p) were also downregulated. We hypothesised that these miRNAs may function as tumour suppressors by regulating common target genes...
April 11, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28315974/inherited-dna-repair-gene-mutations-detected-by-tumor-next-generation-sequencing-in-urinary-tract-cancers
#13
Sumati Gupta, Samantha Greenberg, Jade Grimmett, David Gaston, Neeraj Agarwal, William Lowrance, Joshua Schiffman, Wendy Kohlmann
Interpretation of next-generation sequencing (NGS) of tumor tissue in patients with advanced Urinary Tract Cancer (UTC) is performed to guide treatment selection but may reveal pathogenic variants with germline implications. We identified three patients with UTC with unexpected germline DNA repair gene mutations. Specific testing for these was prompted by the detection of these mutations by tumor NGS. All three patients were nonsmokers with a strong family history of cancer. Two patients had upper tract UTC with age at diagnosis in the 40 s...
March 18, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28306557/mri-micturating-urethrography-for-improved-urethral-delineation-in-prostate-radiotherapy-planning-a-case-study
#14
Robba Rai, Mark Sidhom, Karen Lim, Lucy Ohanessian, Gary P Liney
Stereotactic ablative body radiotherapy is used in prostate cancer to deliver a high dose of radiation to the tumour over a small number of treatments. This involves the simulation of the patient using both CT and MRI. Current practice is to insert an indwelling catheter (IDC) during CT to assist with visualisation of the urethra and subsequently minimise dose to this highly critical structure. However, this procedure is invasive and has an associated risk of infection. This is a case study, which demonstrates our initial experience of using a real-time non-invasive MRI technique to replace the use of IDC for prostate cancer patients...
April 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28297289/a-dosimetric-evaluation-of-knowledge-based-vmat-planning-with-simultaneous-integrated-boosting-for-rectal-cancer-patients
#15
Hao Wu, Fan Jiang, Haizhen Yue, Sha Li, Yibao Zhang
RapidPlan, a commercial knowledge-based optimizer, has been tested on head and neck, lung, esophageal, breast, liver, and prostate cancer patients. To appraise its performance on VMAT planning with simultaneous integrated boosting (SIB) for rectal cancer, this study configured a DVH (dose-volume histogram) estimation model consisting 80 best-effort manual cases of this type. Using the model- generated objectives, the MLC (multileaf collimator) sequences of other 70 clinically approved plans were reoptimized, while the remaining parameters, such as field geometry and photon energy, were maintained...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28287399/a-novel-adaptive-needle-insertion-sequencing-for-robotic-single-needle-mr-guided-high-dose-rate-prostate-brachytherapy
#16
M Borot de Battisti, B Denis de Senneville, G Hautvast, D Binnekamp, J J W Lagendijk, M Maenhout, M A Moerland
MR-guided high-dose-rate (HDR) brachytherapy has gained increasing interest as a treatment for patients with localized prostate cancer because of the superior value of MRI for tumor and surrounding tissues localization. To enable needle insertion into the prostate with the patient in the MR bore, a single needle MR-compatible robotic system involving needle-by-needle dose delivery has been developed at our institution. Throughout the intervention, dose delivery may be impaired by: (1) sub-optimal needle positioning caused by e...
May 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28285559/identification-and-validation-of-gene-expression-patterns-in-cystitis-glandularis-patients-and-controls
#17
Chen-Long Chu, Chen-Hui Zhao, Zhi-Wei Zhang, Ming-Wei Wang, Zhao-Hui Zhang, An-Qing Yang, Bin-Bin Ma, Cai-Feng Lu, Min Wu, Mei-Zhen Gu, Ren-Jie Cui, Zhi-Xiang Xin, Tao Huang, Wen-Long Zhou
Our aim was to investigate differences in gene expression in bladder tissues between cystitis glandularis (CG) patients and healthy controls. Subsequent RNA was isolated from urinary bladder samples from CG patients and healthy controls, followed by RNA sequencing analysis. There were 4263 differentially expressed genes in urinary bladder between CG patients and controls, and 8 genes were verified with real-time PCR, Western blot, and enzyme-linked immunosorbent assay (ELISA) analysis. Gene set enrichment analysis (GSEA) revealed that 25 signaling pathways were upregulated in CG patients, and 17 signaling pathways were found upregulated in healthy controls...
January 1, 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28272009/neoadjuvant-chemotherapy-a-new-standard-for-muscle-invasive-bladder-cancer
#18
Nabil Ismaili
Bladder cancer is the seventh most common cancer and the ninth most common cause of cancer deaths for men worldwide. Cystectomy with pelvic lymph nodes dissection is the standard local treatment of muscle invasive bladder cancer (MIBC) (T2-T4). In the last decade, the management of MIBC had become multidisciplinary involving peri-operative chemotherapy (neo- or adjuvant chemotherapy). Randomized trials and meta-analyses confirmed the survival benefit of neoadjuvant chemotherapy before local treatment (surgery and/or radiotherapy)...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28261684/evaluation-of-zinc-finger-e-box-binding-homeobox-1-and-transforming-growth-factor-beta2-expression-in-bladder-cancer-tissue-in-comparison-with-healthy-adjacent-tissue
#19
Ali Mahdavinezhad, Reza Yadegarazari, Seyed Habibollah Mousavi-Bahar, Jalal Poorolajal, Mohammad Jafari, Mohammad Ali Amirzargar, Hosein Effatpanah, Massoud Saidijam
PURPOSE: The fifth most common cancer is allocated to bladder cancer (BC) worldwide. Understanding the molecular mechanisms of BC invasion and metastasis to identify target therapeutic strategies will improve disease survival. So the aim of this study was to measure expression rate of zinc finger E-box binding homeobox 1 (ZEB1) and transforming growth factor-beta2 (TGF-β2) mRNA in tissue samples of patients with BC and its healthy adjacent tissue samples and their association with muscle invasion, size and grade of the tumor...
March 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28245479/potential-utility-of-diffusion-weighted-magnetic-resonance-imaging-in-diagnosis-of-residual-bladder-cancer-before-second-transurethral-resection
#20
Yuki Nakamura, Soichiro Yoshida, Hiroshi Tanaka, Masaharu Inoue, Masaya Ito, Toshiki Kijima, Minato Yokoyama, Junichiro Ishioka, Yoh Matsuoka, Kazutaka Saito, Yasuhisa Fujii, Kazunori Kihara
INTRODUCTION: The study aimed to investigate the diagnostic utility of diffusion-weighted MRI (DW-MRI) in differentiating residual bladder cancer from benign postoperative changes before a second transurethral resection of the bladder (TURB). MATERIALS AND METHODS: Of the 75 bladder cancer patients who underwent a second TURB from 2013 to 2015, 23 patients who underwent multi-sequence bladder MRI after their initial TURB were retrospectively evaluated. Thirty lesions were histologically examined at the second TURB and the results of them were compared with the findings obtained through T2-weighted MRI, dynamic contrast-enhanced MRI (DCE-MRI), and DW-MRI...
2017: Urologia Internationalis
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