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Sonia Carturan, Jessica Petiti, Valentina Rosso, Chiara Calabrese, Elisabetta Signorino, Giada Bot-Sartor, Paolo Nicoli, Daniela Gallo, Enrico Bracco, Alessandro Morotti, Cristina Panuzzo, Enrico Gottardi, Francesco Frassoni, Giuseppe Saglio, Daniela Cilloni
Meningioma 1 (MN1) gene overexpression has been reported in acute myeloid leukaemia (AML) patients and identified as a negative prognostic factor. In order to characterize patients presenting gene overexpression and to verify if MN1 transcript could be a useful marker for minimal residual disease detection, MN1 was quantified in 136 AML patients with different cytogenetic risk and in 50 normal controls. In 20 patients bearing a fusion gene transcript suitable for minimal residual disease quantitative assessment and in 8 patients with NPM1 mutation, we performed a simultaneous analysis of MN1 and the fusion-gene transcript or NPM1 mutation during follow-up...
September 27, 2016: Oncotarget
Yoichi Kato
We assessed the efficacy of WT1 class I peptide and WT1 class II peptide pulsed dendritic cell(DC)therapy for a wide range of advanced cancers. This retrospective study included 60 advanced cancer patients who were vaccinated 5times or more in this clinic between September 2013 and December 2015. The clinical response was examined. This treatment was approved by the ethics panel at this institution. Sixty patients were injected an average of 6.15times with dendritic cells(DCs) (2.6×10 / 7 cells/injection)...
October 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Leonid Dubrovsky, Elliott Joseph Brea, Dmitry Pankov, Emily Casey, Tao Dao, Cheng Liu, David A Scheinberg
Specific immunotherapy for acute leukemia remains a great unmet need. Native unmodified monoclonal antibody therapies, while promising, are inadequately effective for these malignancies, and multiple mechanisms for failure have been described. Antibody-dependent cellular cytotoxicity or phagocytosis is the primary modality of mAb-mediated cell killing in vivo, but ultimately leads to relapse of the leukemias, in model systems and in humans. By use of a T-cell receptor mimic mAb ESKM, derived against a WT1 peptide expressed in complex with HLA-A*02:01, whose only mechanism of therapeutic action is ADCC, we evaluated the mechanisms of leukemic relapse from its potent therapeutic action in mouse xenograft models of human leukemia...
2016: Oncoimmunology
Surbhi Goyal, Kiran Mishra, Urvee Sarkar, Satendra Sharma, Anita Kumari
BACKGROUND & OBJECTIVES: Renal tumours constitute about 7 per cent of all neoplasms in children. It is important to differentiate Wilms' tumour (commonest tumour) from non-Wilms' tumours. The aim of this study was to evaluate the immunoexpression and diagnostic role of Wilms' tumour-1 protein (WT1) in paediatric renal tumours. METHODS: A total of 53 cases of renal tumours in children (below 18 yr) who underwent total nephrectomy were included in this retrospective study...
May 2016: Indian Journal of Medical Research
A Lourenço, N Wellock, R Thomas, M Homer, H Bouchard, T Kanai, N MacDougall, G Royle, H Palmans
Water-equivalent plastics are frequently used in dosimetry for experimental simplicity. This work evaluates the water-equivalence of novel water-equivalent plastics specifically designed for light-ion beams, as well as commercially available plastics in a clinical high-energy carbon-ion beam. A plastic- to-water conversion factor [Formula: see text] was established to derive absorbed dose to water in a water phantom from ionization chamber readings performed in a plastic phantom. Three trial plastic materials with varying atomic compositions were produced and experimentally characterized in a high-energy carbon-ion beam...
October 14, 2016: Physics in Medicine and Biology
Na Gao, Wen-Zheng Yu, Nong-Jian Guo, Xue-Xia Wang, Jian-Rong Sun
Galectin-3 plays an increasingly important role in development and progression of tumor. However, little is known about the clinical impact of galectin-3 in non-acute promyelocytic leukemia (non-M3 AML). Peripheral blood of 298 patients with primary non-M3 AML and 30 normal donors was collected for measurement of galectin-3. Galectin-3 levels were significantly higher compared with the control group (p < .001). Patients with higher galectin-3 levels had lower CR rates (p = .001) and 1-year overall survival (OS) rates (p = ...
October 13, 2016: Leukemia & Lymphoma
Xiao-Su Zhao, Ya-Zhen Qin, Yan-Rong Liu, Ying-Jun Chang, Lan-Ping Xu, Xiao-Hui Zhang, Xiao-Jun Huang
The minimal residual disease (MRD) before and after a haploidentical hematopoietic stem cell transplantation (HSCT) of 86 patients with acute myeloid leukemia (AML) in complete remission (CR) was measured using flow cytometry (FCM) and Wilms tumor 1 (WT1). In all, 18 patients met the criteria of pre-MRD + before HSCT. The FCM + (p = .028) and the combinative criteria for positive MRD (MRDco+) (p = .022) post-transplantation were significantly correlated to relapse in univariate analysis. A multivariate analysis showed that only MRDco + post-transplantation was an independent risk factor of leukemia relapse (p = ...
October 12, 2016: Leukemia & Lymphoma
Supamit Ukarapong, Gary Berkovitz, Kenneth McElreavey, Anu Bashamboo, Yong Bao
Mutation of the Wilms tumor suppressor gene (WT1) has been recognized as one of the etiologies of steroid-resistant nephrotic syndrome (SRNS). The mutation is also responsible for gonadal dysgenesis in 46,XY individuals. Early recognition of the presence of Y chromosome is of particular importance because of the high risk of gonadal tumor. We present here three cases of steroid-resistant nephrotic syndrome with WT1 mutation and 46,XY karyotype. Patient 1 and 2 have intron splice site (IVS9+5G > A) mutation...
October 10, 2016: Clinical Nephrology
Michael J Nathenson, Vinod Ravi, Nicole Fleming, Wei-Lien Wang, Anthony Conley
Adenosarcomas are rare malignancies of the female genital tract, accounting for approximately 5 % of uterine sarcomas. Occasionally, adenosarcoma occurs in the ovaries or in extra-uterine tissue, which may be related to endometriosis. These tumors are characterized by benign epithelial elements and a malignant mesenchymal component. Pathologic diagnosis is dependent on the identification of the characteristic morphologic features. The most common immunohistochemical markers for adenosarcoma are CD10 and WT1, but these are not specific...
November 2016: Current Oncology Reports
María Librada Porriño-Bustamante, José Aneiros-Fernández, Juan Antonio Retámero, María Antonia Fernández-Pugnaire
Hobnail hemangioma, also known as targetoid hemosiderotic hemangioma, is an uncommon vascular proliferation that clinically presents as a small solitary red to purple papule or macule, located on the limbs or trunk. Multiple lesions and atypical locations have been described. Histopathologically, it exhibits a biphasic pattern, with dilated vessels in the superficial dermis and angulated vessels in the deeper dermis, with endothelial cells that show a hobnail appearance. There is controversy about the histogenetic origin of hobnail hemangioma, although recent studies support that it is a lymphatic malformation...
October 5, 2016: Journal of Cutaneous Medicine and Surgery
Mengsi Hu, Minghua Fan, Junhui Zhen, Jiangong Lin, Qun Wang, Zhimei Lv, Rong Wang
Focal adhesion kinase (FAK) is a non-receptor protein tyrosine kinase that regulates cell adhesion, proliferation and differentiation. In the present study, a rat model of high fat diet-induced hypercholesterolaemia was established to investigate the involvement of FAK in lipid disorder-related kidney diseases. We showed focal fusion of podocyte foot process that occurred at as early as 4 weeks in rats consuming high fat diet, preceding the onset of proteinuria when aberrant phosphorylation of FAK was found...
October 5, 2016: Journal of Cellular and Molecular Medicine
Julia Hoefele, Markus J Kemper, Ulf Schoenermarck, Susanna Mueller, Hanns-Georg Klein, Anja Lemke
About 30% of children with nephrotic syndrome (NS) have inherited forms. Among them, mutations in Wilms tumor suppressor gene 1 (WT1) are a well characterized cause associated with steroid-resistant NS, Wilms tumor, and urogenital malformation in males. However, the role of WT1 mutations in adult-onset focal segmental glomerulosclerosis (FSGS) is unclear. We report the case of a 38-year-old female with FSGS. She had been diagnosed with streak ovaries during diagnostic workup for infertility. Mutational analysis identified the heterozygous mutation c...
October 5, 2016: Nephron
Korkiat Theerakitthanakul, Jeerasak Khrueathong, Jirasak Kruatong, Potchanapond Graidist, Pritsana Raungrut, Kanita Kayasut, Surasak Sangkhathat
: Wilms tumor (WT) is an embryonal tumor occurring in developing kidney tissue. WT cells showing invasive cancer characteristics, also retain renal stem cell behaviours. In-vitro culture of WT is hampered by limited replicative potential. This study aimed to establish a longterm culture of WT cells to enable the study of molecular events to attempt to explain its cellular senescence. METHODS: Primary cell cultures from fresh WT tumor specimen were established. Of 5 cultures tried, only 1 could be propagated for more than 7 passages...
2016: Journal of Cancer
S Struski, S Lagarde, P Bories, C Puiseux, N Prade, W Cuccuini, M-P Pages, A Bidet, C Gervais, M Lafage-Pochitaloff, C Roche-Lestienne, C Barin, D Penther, N Nadal, I Radford-Weiss, M-A Collonge-Rame, B Gaillard, F Mugneret, C Lefebvre, A Petit, G Leverger, C Broccardo, I Luquet, M Pasquet, E Delabesse
Pediatric acute myeloid leukemia (AML) is a rare disease whose prognosis is highly variable according to factors such as chromosomal abnormalities. Recurrent genomic rearrangements are detected in half of pediatric AML by karyotype. NUcleoPorin 98 (NUP98) gene is rearranged with 31 different fusion partner genes. These rearrangements are frequently undetected by conventional cytogenetics, since the NUP98 gene is located at the end of the chromosome 11 short arm (11p15). By screening a series of 574 pediatric AML, we detected a NUP98 rearrangement in 22 cases (3...
October 3, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
Mingming Xue, Yuru Zhou, Xiaoyu Liu, Dongsheng Ni, Yanxia Hu, Yaoshui Long, Pan Ju, Qin Zhou
To seek out the potential microRNAs (miRNAs) that target Wilms' tumor suppressor 1 (WT1), a transcription factor required for progenitor proliferation as well as normal development of the kidney, and to clarify the effects of the miRNAs on WT1, the 3'-untranslated region (3'‑UTR) of WT1 was initially analyzed and miR‑743a, a seldom‑reported miRNA, was identified. In the present paper, luciferase reporter assays were performed to confirm that miR‑743a is able to directly target the 3'‑UTR of WT1. Subsequently, reverse transcription‑quantitative polymerase chain reaction, combined with western blotting analyses, were performed, and the results revealed a significant inhibition of WT1 at the mRNA and the protein levels...
September 22, 2016: Molecular Medicine Reports
Ronell Bologna-Molina, Yasunori Takeda, Takahisa Kuga, Naoyuki Chosa, Masae Kitagawa, Takashi Takata, Akira Ishisaki, Toshinari Mikami
The Wilms' tumor 1 gene (WT1) was originally isolated and described as the gene responsible for Wilms' tumor. Although there is growing evidence linking the overexpression of WT1 to tumorigenesis, no reports on ameloblastoma are available at present. The aim of this study was to examine the expression of WT1 in various histological subtypes of ameloblastoma tissue specimens and in human ameloblastoma cell lines. Immunohistochemical analyses were performed on a total of 168 cases of ameloblastoma, one case of ameloblastic carcinoma, and five cases of tooth germs (control)...
2016: Journal of Oral Science
Yannick Willemen, Johan M J Van den Bergh, Sarah M Bonte, Sébastien Anguille, Carlo Heirman, Barbara M H Stein, Herman Goossens, Tessa Kerre, Kris Thielemans, Marc Peeters, Viggo F I Van Tendeloo, Evelien L J Smits, Zwi N Berneman
We formerly demonstrated that vaccination with Wilms' tumor 1 (WT1)-loaded autologous monocyte-derived dendritic cells (mo-DCs) can be a well-tolerated effective treatment in acute myeloid leukemia (AML) patients. Here, we investigated whether we could introduce the receptor for hyaluronic acid-mediated motility (RHAMM/HMMR/CD168), another clinically relevant tumor-associated antigen, into these mo-DCs through mRNA electroporation and elicit RHAMM-specific immune responses. While RHAMM mRNA electroporation significantly increased RHAMM protein expression by mo-DCs, our data indicate that classical mo-DCs already express and present RHAMM at sufficient levels to activate RHAMM-specific T cells, regardless of electroporation...
September 21, 2016: Oncotarget
Anissa Moktefi, Shao-Yu Zhang, Pauline Vachin, Virginie Ory, Carole Henique, Vincent Audard, Catherine Rucker-Martin, Elodie Gouadon, Michael Eccles, Andreas Schedl, Laurence Heidet, Mario Ollero, Djillali Sahali, Andre Pawlak
The WT1 (Wilm's tumor suppressor) gene is expressed throughout life in podocytes and is essential for the functional integrity of the glomerular filtration barrier. We have previously shown that CMIP (C-Maf inducing protein) is overproduced in podocyte diseases and alters intracellular signaling. Here we isolated the proximal region of the human CMIP promoter and showed by chromatin immunoprecipitation assays and electrophoretic-mobility shift that Wilm's tumor protein (WT1) bound to 2 WT1 response elements, located at positions -290/-274 and -57/-41 relative to transcription start site...
September 17, 2016: Kidney International
Rita Carmona, Ana Cañete, Elena Cano, Laura Ariza, Anabel Rojas, Ramon Muñoz-Chápuli
Congenital diaphragmatic hernia (CDH) is a severe birth defect. Wt1-null mouse embryos develop CDH but the mechanisms regulated by WT1 are unknown. We have generated a murine model with conditional deletion of WT1 in the lateral plate mesoderm, using the G2 enhancer of the Gata4 gene as a driver. 80% of G2-Gata4(Cre);Wt1(fl/fl) embryos developed typical Bochdalek-type CDH. We show that the posthepatic mesenchymal plate coelomic epithelium gives rise to a mesenchyme that populates the pleuroperitoneal folds isolating the pleural cavities before the migration of the somitic myoblasts...
2016: ELife
Tobias Herold, Klaus H Metzeler, Sebastian Vosberg, Luise Hartmann, Vindi Jurinovic, Sabrina Opatz, Nikola P Konstandin, Stephanie Schneider, Evelyn Zellmeier, Bianka Ksienzyk, Alexander Graf, Stefan Krebs, Helmut Blum, Maria Cristina Sauerland, Thomas Büchner, Wolfgang E Berdel, Bernhard J Wörmann, Ulrich Mansmann, Wolfgang Hiddemann, Stefan K Bohlander, Karsten Spiekermann, Philipp A Greif
Deletions of the long arm of chromosome 9 [del(9q)] are a rare but recurring aberration in acute myeloid leukemia (AML). Del(9q) can be found as the sole abnormality or in combination with other cytogenetic aberrations such as t(8;21) and t(15;17). TLE1 and TLE4 were identified to be critical genes contained in the 9q region. We performed whole exome sequencing of 5 patients with del(9q) as the sole abnormality followed by targeted amplicon sequencing of 137 genes of 26 patients with del(9q) as sole or combined with other aberrations...
September 16, 2016: Genes, Chromosomes & Cancer
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