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Wilm tumor 1

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https://www.readbyqxmd.com/read/28326956/clinical-pathologic-and-genetic-features-of-wilms-tumors-with-wtx-gene-mutation
#1
Sanda Alexandrescu, Sara Akhavanfard, Marian H Harris, Sara O Vargas
Clinical and pathologic features of patients with WTX-mutated Wilms tumor (WT) have not been studied in detail. We characterize the clinical and pathologic findings in WT with WTX abnormalities and provide comparison with WT without WTX mutation. Clinical, gross, and microscopic features in 35 patients with WT were examined. Karyotype was examined in a subset of cases. All cases had been previously analyzed for WTX, WT1, and CTNNB1 aberrations via array comparative genomic hybridization; OncoMap 4 high throughput genotyping was performed on 18 cases...
March 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28322459/effects-of-microrna-19b-on-the-proliferation-apoptosis-and-migration-of-wilms-tumor-cells-via-the-pten-pi3k-akt-signaling-pathway
#2
Ge-Liang Liu, Han-Jie Yang, Bo Liu, Tian Liu
Wilms' tumor (WT) is a most common renal cancer that occurs among children, and microRNA-19b (miR-19b) usually participates in various human cancers. Importantly, the PTEN/PI3K/Akt signaling pathway plays a key role in cell apoptosis, growth and proliferation. Thus, our present study aims to investigate the effect of miR-19b on the PTEN/PI3K/Akt signaling pathway during WT cell proliferation, migration and apoptosis. WT tissues and adjacent normal tissues from WT patients were collected. qRT-PCR was applied to detect miR-19b expression in both the WT tissues and the adjacent normal tissues, immunohistochemistry was applied to detect the protein expressions of PTEN, P13K and p-Akt, SK-NEP-1 cells were divided into the blank, negative control (NC), miR-19b mimics and miR-19b inhibitors groups...
March 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28321480/a-new-peptide-vaccine-ocv-501-in-vitro-pharmacology-and-phase-1-study-in-patients-with-acute-myeloid-leukemia
#3
Yukio Kobayashi, Toru Sakura, Shuichi Miyawaki, Kazuyuki Toga, Shinji Sogo, Yuji Heike
Wilms' tumor 1 (WT1) is a promising target of new immunotherapies for acute myeloid leukemia (AML) as well as for other cancers. OCV-501 is a helper peptide derived from the WT1 protein. OCV-501 induced OCV-501-specific Type 1 T-helper (Th1) responses dose-dependently and stimulated helper activity of the specific Th1 cells in peripheral blood mononuclear cells from healthy donors. OCV-501 also enhanced the increase in WT1-killer peptide-specific cytotoxic T lymphocytes. OCV-501 stimulated the OCV-501-specific Th1 clones in an HLA class-II restricted manner and formed a complex with HLA class-II protein...
March 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28315733/wt1-ameliorates-podocyte-injury-via-repression-of-ezh2-%C3%AE-catenin-pathway-in-diabetic-nephropathy
#4
Jiao Wan, Xiaoyan Hou, Zhanmei Zhou, Jian Geng, Jianwei Tian, Jing Nie, Xiaoyan Bai
Epigenetic modulation of podocyte injury plays a pivotal role in diabetic nephropathy (DN). Wilm's tumor 1 (WT1) has been found to have opposing roles with β-catenin in podocyte biology. Herein, we asked whether the histone methyltransferase enzyme enhancer of zeste homolog 2 (EZH2) promotes WT1-induced podocyte injury via β-catenin activation and the underlying mechanisms. We found that WT1 antagonized EZH2 and ameliorated β-catenin-mediated podocyte injury as demonstrated by attenuated podocyte mesenchymal transition, maintenance of podocyte architectural integrity, decreased podocyte apoptosis and oxidative stress...
March 15, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28301057/the-correlation-between-lin28b-gene-potentially-functional-variants-and-wilms-tumor-susceptibility-in-chinese-children
#5
Wen Fu, Guo-Chang Liu, Zhang Zhao, Jinhong Zhu, Wei Jia, Shi-Bo Zhu, Jin-Hua Hu, Feng-Hua Wang, Jing He, Huimin Xia
BACKGROUND: Wilms tumor (WT) is the most common urologic cancer in children. However, genetic bases underlying WT remain largely unknown. Previous studies indicated that Lin28 homolog B (LIN28B) level is significantly elevated in some WTs. Enforced expression of Lin28b during kidney development could induce WT. Genetic variations in the LIN28B gene may be related to WT susceptibility. METHOD: In this study, we aimed to assess the association between LIN28B gene polymorphisms and WT susceptibility in Chinese children...
March 16, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28299466/development-of-oral-cancer-vaccine-using-recombinant-bifidobacterium-displaying-wilms-tumor-1-protein
#6
Koichi Kitagawa, Tsugumi Oda, Hiroki Saito, Ayame Araki, Reina Gonoi, Katsumi Shigemura, Yoshiko Hashii, Takane Katayama, Masato Fujisawa, Toshiro Shirakawa
Several types of vaccine-delivering tumor-associated antigens (TAAs) have been developed in basic and clinical research. Wilms' tumor 1 (WT1), identified as a gene responsible for pediatric renal neoplasm, is one of the most promising TAA for cancer immunotherapy. Peptide and dendritic cell-based WT1 cancer vaccines showed some therapeutic efficacy in clinical and pre-clinical studies but as yet no oral WT1 vaccine can be administrated in a simple and easy way. In the present study, we constructed a novel oral cancer vaccine using a recombinant Bifidobacterium longum displaying WT1 protein...
March 15, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28299339/cytoplasmic-localization-of-wt1-and-decrease-of-mirna-16-1-in-nephrotic-syndrome
#7
Pablo Zapata-Benavides, Mariela Arellano-Rodríguez, Juan José Bollain-Y-Goytia, Moisés Armides Franco-Molina, Gloria Azucena Rangel-Ochoa, Esperanza Avalos-Díaz, Rafael Herrera-Esparza, Cristina Rodríguez-Padilla
Nephrotic syndrome (NS) is a glomerular disease that is defined by the leakage of protein into the urine and is associated with hypoalbuminemia, hyperlipidemia, and edema. Steroid-resistant NS (SRNS) patients do not respond to treatment with corticosteroids and show decreased Wilms tumor 1 (WT1) expression in podocytes. Downregulation of WT1 has been shown to be affected by certain microRNAs (miRNAs). Twenty-one patients with idiopathic NS (68.75% were SSNS and 31.25% SRNS) and 10 healthy controls were enrolled in the study...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28289143/transcription-factor-wilms-tumor-1-regulates-developmental-rnas-through-3-utr-interaction
#8
Ruthrothaselvi Bharathavikru, Tatiana Dudnakova, Stuart Aitken, Joan Slight, Mara Artibani, Peter Hohenstein, David Tollervey, Nick Hastie
Wilms' tumor 1 (WT1) is essential for the development and homeostasis of multiple mesodermal tissues. Despite evidence for post-transcriptional roles, no endogenous WT1 target RNAs exist. Using RNA immunoprecipitation and UV cross-linking, we show that WT1 binds preferentially to 3' untranslated regions (UTRs) of developmental targets. These target mRNAs are down-regulated upon WT1 depletion in cell culture and developing kidney mesenchyme. Wt1 deletion leads to rapid turnover of specific mRNAs. WT1 regulates reporter gene expression through interaction with 3' UTR-binding sites...
March 13, 2017: Genes & Development
https://www.readbyqxmd.com/read/28288142/serine-hydroxymethyl-transferase-1-stimulates-pro-oncogenic-cytokine-expression-through-sialic-acid-to-promote-ovarian-cancer-tumor-growth-and-progression
#9
R Gupta, Q Yang, S K Dogra, N Wajapeyee
High-grade serous (HGS) ovarian cancer accounts for 90% of all ovarian cancer-related deaths. However, factors that drive HGS ovarian cancer tumor growth have not been fully elucidated. In particular, comprehensive analysis of the metabolic requirements of ovarian cancer tumor growth has not been performed. By analyzing The Cancer Genome Atlas mRNA expression data for HGS ovarian cancer patient samples, we observed that six enzymes of the folic acid metabolic pathway were overexpressed in HGS ovarian cancer samples compared with normal ovary samples...
March 13, 2017: Oncogene
https://www.readbyqxmd.com/read/28263240/peptide-pulsed-dendritic-cell-vaccine-in-combination-with-carboplatin-and-paclitaxel-chemotherapy-for-stage-iv-melanoma
#10
Keitaro Fukuda, Takeru Funakoshi, Toshiharu Sakurai, Yoshio Nakamura, Mariko Mori, Keiji Tanese, Akiko Tanikawa, Junichi Taguchi, Tomonobu Fujita, Masato Okamoto, Masayuki Amagai, Yutaka Kawakami
In this study, we aimed to evaluate the feasibility and efficacy of peptide-pulsed dendritic cell (DC) vaccine in combination with carboplatin and paclitaxel chemotherapy (DCCP) for patients with stage IV melanoma previously treated with dacarbazine-containing regimen. Six HLA-A24 and 3 HLA-A02 patients were treated with carboplatin (area under the curve 5) and paclitaxel (175 mg/m) on day 1 and DCs (2×10 cells) pulsed with Wilms tumor gene 1 (WT1), gp100, tyrosinase, and either MAGE-A3 (for HLA-A24) or MAGE-A2 (for HLA-A02) peptides on days 8 and 22 in 28-day cycle for up to three cycles...
March 3, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28260929/association-between-tp53-gene-arg72pro-polymorphism-and-wilms-tumor-risk-in-a-chinese-population
#11
Wen Fu, Zhen-Jian Zhuo, Wei Jia, Jinhong Zhu, Shi-Bo Zhu, Ze-Feng Lin, Feng-Hua Wang, Huimin Xia, Jing He, Guo-Chang Liu
Wilms' tumor is one of the most prevalent pediatric malignancies, ranking fourth in childhood cancer worldwide. TP53 is a critical tumor suppressor gene, which encodes a 53 kDa protein, p53. The p53 functions to protect against cancer by regulating cell cycle and apoptosis and maintaining DNA integrity. TP53 gene is highly polymorphic. Several TP53 gene polymorphisms have been considered to be associated with cancer risk. Of them, a nonsynonymous polymorphism, Arg72Pro (rs1042522 C>G), has been most extensively studied for the association with cancer risk; however, few studies have investigated its effect on Wilms' tumor...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28257282/wt1-mutation-associated-nephropathy-a%C3%A2-single-center-experience%C3%A2
#12
Zhihui Yue, Haiyan Wang, Hongrong Lin, Juan Yang, Ting Liu, Yulin Liu, Huamu Chen, Liangzhong Sun
This study explored Wilms' tumor 1 (WT1) mutations in children with, or suspected of having, steroid-resistant nephrotic syndrome (SRNS), referred to or treated in our hospital in the past 6 years as well as the correlation between genotype and phenotype in WT1 mutation-associated nephropathy in Chinese patients. In total, 76 patients participated in the study. WT1 mutations were identified in 15 patients, 5 of whom harbored splice-site mutations in intron 9. Four of these 5 patients exhibited early onset of nephropathy and rapid deterioration of renal function...
March 3, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28251221/the-prognostic-significance-of-hypertension-at-diagnosis-in-children-with-wilms-tumor
#13
Wasil Jastaniah, Naglla Elimam, Razan S Alluhaibi, Alaa T Alharbi, Adil Ah Abbas, Mohammed B Abrar
To determine the prognostic effect of hypertension at diagnosis on outcomes of children with Wilms tumor (WT).   Methods: A single center retrospective analysis was conducted on 85 consecutive children with WT diagnosed between January 2000 and August 2013. Patients were classified as hypertensive or normotensive at diagnosis. Overall survival (OS) and progression-free survival (PFS) were estimated using the Kaplan-Meier method. Cox regression was used to determine the predictive significance of hypertension and other clinical factors...
March 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28237837/a-novel-dna-vaccine-platform-enhances-neo-antigen-like-t-cell-responses-against-wt1-to-break-tolerance-and-induce-anti-tumor-immunity
#14
Jewell N Walters, Bernadette Ferraro, Elizabeth K Duperret, Kimberly A Kraynyak, Jaemi Chu, Ashley Saint-Fleur, Jian Yan, Hy Levitsky, Amir S Khan, Niranjan Y Sardesai, David B Weiner
Tumor-associated antigens have emerged as important immunotherapeutic targets in the fight against cancer. Germline tumor antigens, such as WT1, Wilms' tumor gene 1, are overexpressed in many human malignancies but have low expression in somatic tissues. Recent vaccination approaches to target WT1 have been hampered by poor in vivo immune potency, likely due to the conserved self-antigen nature of WT1. In this study, we use a novel synthetic micro-consensus SynCon DNA vaccine approach with the goal of breaking tolerance and increasing vaccine immune potency...
February 22, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28212562/overexpression-of-mir-29a-reduces-the-oncogenic-properties-of-glioblastoma-stem-cells-by-downregulating-quaking-gene-isoform-6
#15
Zhuo Xi, Ping Wang, Yixue Xue, Chao Shang, Xiaobai Liu, Jun Ma, Zhiqing Li, Zhen Li, Min Bao, Yunhui Liu
Glioblastoma is the most common type of malignant primary brain tumor and has high recurrence and lethality rates. Glioblastoma stem cells (GSCs), a subpopulation of glioblastoma cells, may promote rapid tumor recurrence and therapy resistance. Because altered microRNA (miR) expression in GSCs may lead to glioblastoma progression, we assessed the effects of miR-29a expression on the oncogenic behavior of GSCs. MiR-29a expression was lower in GSCs than non-GSCs, and overexpression of miR-29a in GSCs inhibited cell proliferation, migration and invasion, but promoted apoptosis...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28196410/mesothelin-expression-in-gastric-adenocarcinoma-and-its-relation-to-clinical-outcomes
#16
Song-Hee Han, Mee Joo, Hanseong Kim, Sunhee Chang
BACKGROUND: Although surgical resection with chemotherapy is considered effective for patients with advanced gastric cancer, it remains the third leading cause of cancer-related death in South Korea. Several studies have reported that mesothelial markers including mesothelin, calretinin, and Wilms tumor protein 1 (WT1) were positive in variable carcinomas, associated with prognosis, and were evaluated as potential markers for targeted therapy. The aim of this study was to assess the immunohistochemical expression of mesothelial markers (mesothelin, calretinin, and WT1) in gastric adenocarcinoma and their relations to clinocopathological features and prognosis...
March 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28188683/functional-kras-mutations-and-a-potential-role-for-pi3k-akt-activation-in-wilms-tumors
#17
Dina Polosukhina, Harold D Love, Hernan Correa, Zengliu Su, Kimberly B Dahlman, William Pao, Harold L Moses, Carlos L Arteaga, Harold N Lovvorn, Roy Zent, Peter E Clark
Wilms tumor (WT) is the most common renal neoplasm of childhood and affects 1 in 10,000 children aged less than 15 years. These embryonal tumors are thought to arise from primitive nephrogenic rests that derive from the metanephric mesenchyme during kidney development and are characterized partly by increased Wnt/β-catenin signaling. We previously showed that coordinate activation of Ras and β-catenin accelerates the growth and metastatic progression of a murine WT model. Here, we show that activating KRAS mutations can be found in human WT...
February 11, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28179596/nephron-wilms-tumor-1-wt1-and-synaptopodin-expression-in-developing-podocytes-of-mice
#18
Takashi Kato, Shinya Mizuno
Newborn mouse glomeruli are still immature with a morphological feature of an early capillary loop stage, but infant mice do not manifest proteinuria. Little is known about the molecular mechanism whereby infant mice are resistant to proteinuria. Nephrin and synaptopodin are crucial for slit diaphragm and foot process (FP) formation for avoiding proteinuria. Nephrin tyrosine phosphorylation means a transient biological signaling required for FP repair or extension during nephrotic disease. Using an immunohistochemical technique, we examined the natural course of nephrin, Wilms' tumor-1 (WT1) and synaptopodin at 16...
February 7, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28176175/safety-and-immunogenicity-of-neoadjuvant-treatment-using-wt1-immunotherapeutic-in-combination-with-standard-therapy-in-patients-with-wt1-positive-stage-ii-iii-breast-cancer-a-randomized-phase-i-study
#19
M Higgins, G Curigliano, V Dieras, S Kuemmel, G Kunz, P A Fasching, M Campone, T Bachelot, P Krivorotko, S Chan, A Ferro, L Schwartzberg, M Gillet, P M De Sousa Alves, V Wascotte, F F Lehmann, P Goss
PURPOSE: This Phase I, multicenter, randomized study (ClinicalTrials.gov NCT01220128) evaluated the safety and immunogenicity of recombinant Wilms' tumor 1 (WT1) protein combined with the immunostimulant AS15 (WT1-immunotherapeutic) as neoadjuvant therapy administered concurrently with standard treatments in WT1-positive breast cancer patients. METHODS: Patients were treated in 4 cohorts according to neoadjuvant treatment (A: post-menopausal, hormone receptor [HR]-positive patients receiving aromatase inhibitors; B: patients receiving chemotherapy; C: HER2-overexpressing patients on trastuzumab-chemotherapy combination; D: HR-positive/HER2-negative patients on chemotherapy)...
April 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28163010/use-of-wilms-tumor-1-gene-expression-as-a-reliable-marker-for-prognosis-and-minimal-residual-disease-monitoring-in-acute-myeloid-leukemia-with-normal-karyotype-patients
#20
Irena Marjanovic, Teodora Karan-Djurasevic, Milena Ugrin, Marijana Virijevic, Ana Vidovic, Dragica Tomin, Nada Suvajdzic Vukovic, Sonja Pavlovic, Natasa Tosic
BACKGROUND: Acute myeloid leukemia with normal karyotype (AML-NK) represents the largest group of AML patients classified with an intermediate prognosis. A constant need exists to introduce new molecular markers for more precise risk stratification and for minimal residual disease (MRD) monitoring. PATIENTS AND METHODS: Quantitative assessment of Wilms tumor 1 (WT1) gene transcripts was performed using real-time polymerase chain reaction. The bone marrow samples were collected at the diagnosis from 104 AML-NK patients and from 34 of these patients during follow-up or disease relapse...
January 11, 2017: Clinical Lymphoma, Myeloma & Leukemia
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