Wilms tumor is the most common pediatric kidney cancer and is closely connected to kidney development. Mutafions in two genes, WT1 and beta-catenin, and epigenefic changes in the insulin-like growth factor 2 (IGF2) locus have been described but the genetic basis of the majority of cases remains unknown. Given that current treatment protocols for Wilms tumor achieve high success rates (85%), there is a pressing need for prognosfic markers that can guide clinical management but these have been difficult to define. We have recently identified a novel tumor suppressor located on the X chromosome, WTX, which is inactivated in 30% of Wilms tumor cases. We now propose to build on our initial findings to establish clinical correlates of WTX inacfivafion and to test the potenfial applicafion of WTX mutafions as markers of prognosis. We wil also define additional markers by identifying molecular pathways that are affected by WTX inactivation Together, these studies will achieve immediate translational goals by defining novel biomarkers in Wilms tumor and will further our understanding of this disease to allow the future development of biologically based therapies.
Specific aims : 1) To define clinical correlafions of WTX inactivation in Wilms tumor. We will analyze 200 Wilms tumors for WTX mutations and correlate our findings with disease outcomes and other clinical parameters such as age at presentation, stage at diagnosis, bilaterality and associated developmental malformafions. We will also develop a WTX polyclonal antibody and a Wilms tumor fissue microarray to test WTX protein levels. 2) Modeling WTX funcfion to identify pathways of potential clinical significance. We will use immunoprecipitation of tagged WTX followed by mass spectrometry to define interactions between WTX and other cellular components. The funcfional consequences of these interactions will be validated in vitro using kidney derived cell lines and in vivo using a WTX conditional knockout mouse. 3) Clinical validation of novel Wilms tumor markers. Genes involved in WTX related pathways will be tested for potenfial clinical applicafions as biomarkers by correlafing expression levels with clinical parameters. We will also test selected genes for mutafions in primary Wilms tumors. We anticipated that, by defining prognostic markers and furthering our knowledge of WTX related pathways in Wilms tumor, this project will have public health applications in the treatment of pediatric kidney cancer.
|Chen, Fengju; Zhang, Yiqun; ÅženbabaoÄŸlu, Yasin et al. (2016) Multilevel Genomics-Based Taxonomy of Renal Cell Carcinoma. Cell Rep 14:2476-89|
|Choueiri, Toni K; Fishman, Mayer N; Escudier, Bernard et al. (2016) Immunomodulatory Activity of Nivolumab in Metastatic Renal Cell Carcinoma. Clin Cancer Res :|
|Albiges, Laurence; Hakimi, A Ari; Xie, Wanling et al. (2016) Body Mass Index and Metastatic Renal Cell Carcinoma: Clinical and Biological Correlations. J Clin Oncol :|
|Schildberg, Frank A; Klein, Sarah R; Freeman, Gordon J et al. (2016) Coinhibitory Pathways in the B7-CD28 Ligand-Receptor Family. Immunity 44:955-72|
|de Velasco, Guillermo; Miao, Diana; Voss, Martin H et al. (2016) Tumor Mutational Load and Immune Parameters across Metastatic Renal Cell Carcinoma Risk Groups. Cancer Immunol Res 4:820-822|
|de Velasco, Guillermo; Krajewski, Katherine M; Albiges, Laurence et al. (2016) Radiologic Heterogeneity in Responses to Anti-PD-1/PD-L1 Therapy in Metastatic Renal Cell Carcinoma. Cancer Immunol Res 4:12-7|
|Gelpi-Hammerschmidt, Francisco; Tinay, Ilker; Allard, Christopher B et al. (2016) The Contemporary Incidence and Sequelae of Rhabdomyolysis Following Extirpative Renal Surgery: A Population Based Analysis. J Urol 195:399-405|
|Robson, Philip M; Madhuranthakam, Ananth J; Smith, Martin P et al. (2016) Volumetric Arterial Spin-labeled Perfusion Imaging of the Kidneys with a Three-dimensional Fast Spin Echo Acquisition. Acad Radiol 23:144-54|
|Meng, Chen; Zeleznik, Oana A; Thallinger, Gerhard G et al. (2016) Dimension reduction techniques for the integrative analysis of multi-omics data. Brief Bioinform 17:628-41|
|Reardon, David A; Gokhale, Prafulla C; Klein, Sarah R et al. (2016) Glioblastoma Eradication Following Immune Checkpoint Blockade in an Orthotopic, Immunocompetent Model. Cancer Immunol Res 4:124-35|
Showing the most recent 10 out of 118 publications