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miRNA Bladder

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https://www.readbyqxmd.com/read/27904689/mir-4295-promotes-cell-growth-in-bladder-cancer-by-targeting-btg1
#1
Yong-Hao Nan, Jun Wang, Yao Wang, Peng-Hao Sun, Yu-Ping Han, Li Fan, Kai-Chen Wang, Fu-Jun Shen, Wei-Hua Wang
microRNAs (miRNAs) have been demonstrated to contribute to tumor progression and metastasis, and have been proposed to be key regulators of diverse biological processes. In this study, we report that miR-4295 is deregulated in bladder cancer tissues and cell lines. To characterize the role of miR-4295 in bladder cancer cells, we performed functional assays. The overexpression of miR-4295 significantly promoted bladder cancer cell proliferation, colony formation, and migration. Moreover, its downregulation induced cell cycle arrest and apoptosis of bladder cancer cells...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27904673/microrna-206-acts-as-a-tumor-suppressor-in-bladder-cancer-via-targeting-yrdc
#2
Bisheng Huang, Wei Zhai, Guanghui Hu, Chi Huang, Tiancheng Xie, Jingwei Zhang, Yunfei Xu
Accumulating evidence suggested that microRNA (miRNA) plays important regulatory roles in the initiation and development of various cancers. Previous study showed that microRNA-206 (miR-206) is dysregulated in human bladder cancer tissues, however, the biological function and underlying mechanisms of miR-206 in human bladder cancer remain unknown. In the present study, we aimed to investigate the clinical significance of miR-206 and its target gene YRDC in human bladder cancer, and to determine its effects on oncogenic phenotypes of this disease...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27863388/comprehensive-analysis-of-aberrantly-expressed-profiles-of-lncrnas-and-mirnas-with-associated-cerna-network-in-muscle-invasive-bladder-cancer
#3
Hanbo Wang, Leilei Niu, Shaobo Jiang, Jing Zhai, Ping Wang, Feng Kong, Xunbo Jin
Although initially thought to be transcriptional noise, long noncoding RNAs (lncRNAs) are gaining increased attention in human cancers as its diversity function. At present, lncRNAs are regarded as the main part of competing endogenous RNA (ceRNA) network due to its regulation on protein-coding gene expression by acting as miRNA sponges. However, functional roles of lncRNA-mediated ceRNAs in muscle-invasive bladder cancer remain unclear. To clarify relevant potential mechanisms, here we comprehensively compared the expression profiles of mRNAs, lncRNAs and miRNAs between 322 muscle-invasive bladder cancer tissues and 19 non-tumor bladder tissues, based on the Cancer Genome Atlas (TCGA)...
November 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27845906/specific-micro-rna-expression-patterns-distinguish-the-basal-and-luminal-subtypes-of-muscle-invasive-bladder-cancer
#4
Andrea E Ochoa, Woonyoung Choi, Xiaoping Su, Arlene Siefker-Radtke, Bogdan Czerniak, Colin Dinney, David J McConkey
The roles of non-coding RNAs in controlling clinical and biological heterogeneity in bladder cancer remain unclear. We used TCGA's published dataset (n = 405 tumors) as a discovery cohort and created a new validation cohort to define the miRNA expression patterns in the basal and luminal molecular subtypes of muscle-invasive bladder cancer (MIBC). We identified 63 miRNAs by PAM, which optimally identified basal and luminal tumors. The targets of the top luminal miRNAs were activators of EMT (ZEB1, ZEB2) and basal subtype transcription (IL-6, EGFR, STAT3), whereas the targets of the top basal miRNAs were involved in adipogenesis pathways and luminal breast cancer (ERBB2, ERBB3)...
November 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27820650/upregulation-of-mir-3658-in-bladder-cancer-and-tumor-progression
#5
Y J Chen, H F Wang, M Liang, R C Zou, Z R Tang, J S Wang
Despite increasing advances in surgical techniques and adjuvant chemotherapies, bladder cancer remains the ninth leading cause of male malignancy-associated deaths worldwide. Several microRNAs (miRNAs) have been identified to be closely associated with the progression and prognosis of, and response to treatments in various human cancers. However, few studies have investigated the role of miR-3658 in bladder cancer. In this study, we examined the expression of miR-3658 in 96 pairs of bladder cancer tissues and adjacent non-tumor tissues via quantitative reverse-transcription polymerase chain reaction...
November 3, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27814720/mir-199a-5p-suppresses-human-bladder-cancer-cell-metastasis-by-targeting-ccr7
#6
Mi Zhou, Shuai Wang, Linyi Hu, Feng Liu, Qi Zhang, Dahong Zhang
BACKGROUND: C-C chemokine receptor type 7 (CCR7) overexpression correlated with lymphatic metastasis and poor prognosis is a major obstacle to bladder cancer treatment. Recent studies have revealed that miR-199a-5p was significantly abnormal expressed in several solid tumors and functioned as oncogene or tumor suppressor. This study was aimed to further investigate the effects of miR-199a-5p on the cell metastasis mediated by CCR7 in bladder cancer. METHODS: Quantitative Real Time PCR (qRT-PCR) was firstly performed to identified the expression of miR-199a-5p and CCR7 in human bladder cancer samples and cell lines...
November 4, 2016: BMC Urology
https://www.readbyqxmd.com/read/27804986/the-translational-potential-of-micrornas-as-biofluid-markers-of-urological-tumours
#7
REVIEW
Annika Fendler, Carsten Stephan, George M Yousef, Glen Kristiansen, Klaus Jung
MicroRNAs (miRNAs) are secreted by cells in vesicles, bound in a ribonucleoprotein complex or as free molecules. These miRNA secretion pathways are dysregulated in cancer, making miRNAs attractive candidate molecules for liquid biopsies. A number of studies have investigated the regulation of miRNA secretion into blood and urine and suggested that miRNAs are noninvasive diagnostic, prognostic and surveillance markers in urological carcinomas, and research in this area has increased over the past 5 years. However, methodological and analytical pitfalls exist and require addressing to enable future translation of the laboratory findings regarding miRNAs as biomarkers into clinical practice in bladder cancer, kidney cancer, prostate cancer and testicular cancer...
December 2016: Nature Reviews. Urology
https://www.readbyqxmd.com/read/27789288/bladder-overactivity-involves-overexpression-of-microrna-132-and-nerve-growth-factor
#8
Mahendra Kashyap, Subrata Pore, Michael Chancellor, Naoki Yoshimura, Pradeep Tyagi
AIM: Here, we assessed the expression of non-protein coding microRNAs (miRs), nerve growth factor and inflammatory molecules in the rat model of acetic acid induced bladder overactivity. MAIN METHODS: Under isoflurane anesthesia, adult female Sprague-Dawley rats were instilled for 30min with either saline or NGF antisense oligonucleotide complexed with liposomes. 24h later, treated rats were exposed to either intravesical infusion of saline or saline containing 0...
December 15, 2016: Life Sciences
https://www.readbyqxmd.com/read/27753026/comparison-of-microrna-content-in-plasma-and-urine-indicates-the-existence-of-a-transrenal-passage-of-selected-micrornas
#9
Eva Pazourkova, Sarka Pospisilova, Iveta Svobodova, Ales Horinek, Antonin Brisuda, Viktor Soukup, Jan Hrbacek, Otakar Capoun, Jaroslav Mares, Tomas Hanus, Marek Babjuk, Marie Korabecna
MicroRNAs (miRNAs) in urine are examined as potential biomarkers. We examined the urine samples from 70 individuals (45 males, 25 females, mean age 65 years, range 20-84 years). Of the urine donors, 15 were healthy volunteers, 5 were patients with non-cancer diseases, 50 were patients with different stages of bladder cancer. To examine the spectrum of miRNAs in the cell-free fraction of urine, TaqMan Human miRNA Array Card A v.2.1 was used. A set of 30 miRNAs were found that are constantly present in urine supernatants independently of sex, age and health status of the subjects...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27752905/expression-of-mirna-630-in-bladder-urothelial-carcinoma-and-its-clinical-significance
#10
Zhi-Yu Wang, Wei Zhang, Jin-Jian Yang, Dong-Kui Song, Jin-Xing Wei
Many studies informed that microRNAs (miRNAs) could function as diagnostic and prognostic indicators in several cancers. The aims of this study were to explore the expression of miR-630 in bladder urothelial carcinoma and its clinical significance for the evaluation of cancer prognosis. A total of 116 patients with bladder urothelial carcinoma were obtained in this retrospective study between May, 2012 and Sep. 2015. Quantitative real-time PCR (qRT-PCR) was conducted to evaluate the expression level of miR-630...
October 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/27751843/extracellular-vesicles-as-a-source-for-non-invasive-biomarkers-in-bladder-cancer-progression
#11
Zoraida Andreu, Renan Otta Oshiro, Alberto Redruello, Soraya López-Martín, Cristina Gutiérrez-Vázquez, Esperanza Morato, Ana Isabel Marina, Carlos Olivier Gómez, María Yáñez-Mó
Bladder cancer is the second most frequent malignancy of the urinary tract after prostate cancer. Current diagnostic techniques, such as cystoscopy and biopsies are highly invasive and accompanied of undesirable side effects. Moreover, there are no suitable biomarkers for relapse or progression prognosis. We analysed whether the specific composition of microRNAs (miRNAs) and proteins of extracellular vesicles (EVs) that urothelial tumor cells of bladder mucosa release into the urine, could reflect their pathologic condition...
October 14, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27736810/egf-receptor-targeted-lipo-oligocation-polyplexes-for-antitumoral-sirna-and-mirna-delivery
#12
Katharina Müller, Philipp M Klein, Philipp Heissig, Andreas Roidl, Ernst Wagner
Antitumoral siRNA and miRNA delivery was demonstrated by epidermal growth factor receptor (EGFR) targeted oligoaminoamide polyplexes. For this purpose, the T-shaped lipo-oligomer 454 was used to complex RNA into a core polyplex, which was subsequently functionalized with the targeting peptide ligand GE11 via a polyethylene glycol (PEG) linker. To this end, free cysteines on the surface of 454 polyplex were coupled with a maleimide-PEG-GE11 reagent (Mal-GE11). Resulting particles with sizes of 120-150 nm showed receptor-mediated uptake into EGFR-positive T24 bladder cancer cells, MDA-MB 231 breast cancer cells and Huh7 liver cancer cells...
October 13, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27729841/in-silico-study-of-mirna-based-gene-regulation-involved-in-solid-cancer-by-the-assistance-of-argonaute-protein
#13
Surya Narayan Rath, Debasrita Das, V Badireenath Konkimalla, Sukanta Kumar Pradhan
Solid tumor is generally observed in tissues of epithelial or endothelial cells of lung, breast, prostate, pancreases, colorectal, stomach, and bladder, where several genes transcription is regulated by the microRNAs (miRNAs). Argonaute (AGO) protein is a family of protein which assists in miRNAs to bind with mRNAs of the target genes. Hence, study of the binding mechanism between AGO protein and miRNAs, and also with miRNAs-mRNAs duplex is crucial for understanding the RNA silencing mechanism. In the current work, 64 genes and 23 miRNAs have been selected from literatures, whose deregulation is well established in seven types of solid cancer like lung, breast, prostate, pancreases, colorectal, stomach, and bladder cancer...
September 2016: Genomics & Informatics
https://www.readbyqxmd.com/read/27698912/mir-193a-5p-targets-the-coding-region-of-ap-2%C3%AE-mrna-and-induces-cisplatin-resistance-in-bladder-cancers
#14
Ji Zhou, Huaxin Duan, Yu Xie, Yichong Ning, Xing Zhang, Na Hui, Chunqing Wang, Jian Zhang, Jianlin Zhou
Transcription factor AP-2 alpha (AP-2α or TFAP2A) is a newly identified prognostic marker of chemotherapy; its expression is positively correlated with chemosensitivity and survival of cancer patients. Using computational programs, we predicted that the coding region of AP-2α gene contains a potential miRNA response element (MRE) of miR-193a-5p, and the single nucleotide polymorphism (SNP) site (c.497A>G, rs111681798) resides within the predicted MRE. The results of luciferase assays and Western blot analysis demonstrated that miR-193a-5p negatively regulated the expression of AP-2α proteins, but have no influence on the mutant AP-2α (c...
2016: Journal of Cancer
https://www.readbyqxmd.com/read/27651435/microrna-4323-induces-human-bladder-smooth-muscle-cell-proliferation-under-cyclic-hydrodynamic-pressure-by-activation-of-erk1-2-signaling-pathway
#15
Yi Sun, Deyi Luo, Yuchun Zhu, Kunjie Wang
We cultivated human bladder smooth muscle cells (HBSMCs) under pressures of 0 or 200 cm H2O pressure for 24 h, before using microarray technology to extract and analyze the different expressions of miRNAs and mRNAs in the two groups. We also predicted the target mRNA of the miDNA and performed functional forecasting. Changes in miRNA were identified by quantitative real-time polymerase chain reaction (qRT-PCR) after overexpressing miRNA by transfection. We used flow cytometry to examine HBSMC proliferation, and we used qRT-PCR and Western blot analyses to quantify the expression and activation of mRNAs and proteins...
September 19, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27648356/mir-186-inhibits-cell-proliferation-of-prostate-cancer-by-targeting-golph3
#16
Xing Hua, Yu Xiao, Wenhai Pan, Meiyun Li, Xiaoxiao Huang, Zexiao Liao, Qi Xian, Lina Yu
Prostate cancer is one of the leading causes of cancer deaths among men, many miRNAs have been demonstrated to play critical role in the progression of prostate cancer, miR-186 suppresses the progression of many tumors, such as bladder cancer and glioma. Previous study shows miR-186 is downregulated in prostate cancer tissues, and is a good prognosis for prostate cancer patients. In this study, we found miR-186 was downregulated in prostate cancer cells and tissues, overexpression of miR-186 inhibited cell proliferation and tumorigenesis in vitro determined by MTT assay, colony formation assay and soft agar growth assay, whereas knockdown of miR-186 reduced these effects...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27631180/evaluation-of-mir-182-mir-100-ratio-for-diagnosis-and-survival-prediction-in-bladder-cancer
#17
Zhanguo Chen, Lili Wu, Qi Lin, Jing Shi, Xiangyang Lin, Liang Shi
BACKGROUND: Abnormal expression of microRNAs (miRNAs) plays an important role in development of several cancer types, including bladder cancer (BCa). However, the relationship between the ratio of miR-181/miR-100 and the prognosis of BCa has not been studied yet. The aim of this study was to evaluate the expression of miR-182, miR-100 and their clinical significance in BCa. METHODS: Upregulation of miR-182 and down-regulation of miR-100 were validated in tissue specimens of 134 BCa cases compared with 148 normal bladder epithelia (NBE) specimens  using TaqMan-based real-time reverse transcription quantitative PCR (RT-qPCR)...
September 2016: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/27602581/computational-identification-of-micrornas-associated-to-both-epithelial-to-mesenchymal-transition-and-ngal-mmp-9-pathways-in-bladder-cancer
#18
Luca Falzone, Saverio Candido, Rossella Salemi, Maria S Basile, Aurora Scalisi, James A McCubrey, Francesco Torino, Salvatore S Signorelli, Maurizio Montella, Massimo Libra
Bladder cancer is one of the leading cancer of the urinary tract. It is often diagnosed at advanced stage of the disease. To date, no specific and effective early detection biomarkers are available. Cancer development and progression are associated with the involvement of both epithelial-mesenchymal transition (EMT) and tumor microenvironment of which NGAL/MMP-9 complex represents the main player in bladder cancer. It is known that change in microRNAs (miRNAs) expression may result in gene modulation. Therefore, the identification of specific miRNAs associated with EMT pathway and NGAL/MMP-9 complex may be useful to detect the development of bladder cancer at early stages...
September 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27594736/new-progress-of-epigenetic-biomarkers-in-urological-cancer
#19
REVIEW
Peng Wu, Ziyi Cao, Song Wu
Urological cancers consist of bladder, kidney, prostate, and testis cancers and they are generally silenced at their early stage, which leads to the loss of the best opportunity for early diagnosis and treatment. Desired biomarkers are scarce for urological cancers and current biomarkers are lack of specificity and sensitivity. Epigenetic alterations are characteristic of nearly all kinds of human malignances including DNA methylation, histone modification, and miRNA regulation. Besides, the detection of these epigenetic conditions is easily accessible especially for urine, best target for monitoring the diseases of urinary system...
2016: Disease Markers
https://www.readbyqxmd.com/read/27586262/microrna-expression-profiles-as-decision-making-biomarkers-in-the-management-of-bladder-cancer
#20
Sharon Amir, Nicola J Mabjeesh
Bladder cancer (BC) is generally divided into non-muscle-invasive BC (NMIBC) and muscle-invasive BC (MIBC). The standard treatment protocol for MIBC patients is radical cystectomy preceded by neoadjuvant chemotherapy (NAC). About one-half of the MIBC patients show a priori resistance to chemotherapy, and are therefore exposed to the risks of disease progression and toxicity from ineffective NAC. The discovery of microRNA (miRNA) regulation in tumorigenesis has provided new directions for the development of a new type of BC biomarkers...
September 2, 2016: Histology and Histopathology
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