J L Ordóñez

Learn More
Despite extensive characterization of the role of the EWS-ETS fusions, little is known about secondary genetic alterations and their clinical contribution to Ewing sarcoma (ES). It has been demonstrated that the molecular structure of EWS-ETS lacks prognostic value. Moreover, CDKN2A deletion and TP53 mutation, despite carrying a poor prognosis, are(More)
BACKGROUND: Ewing sarcoma is a paradigm of solid tumour -bearing chromosomal translocations resulting in fusion proteins that act as deregulated transcription factors. Ewing sarcoma translocations fuse the EWS gene with an ETS transcription factor, mainly FLI1. Most of the EWS–FLI1 target genes still remain unknown and many have been identified in(More)
PURPOSE Ewing tumor cell survival and proliferation depends on several autocrine loops. Targeting these loops is a promising therapeutic approach. We recently showed the cytostatic role of imatinib, an inhibitor of the SCF-KIT loop, on Ewing tumor cells, and in this study, we intend to analyze the inhibition of the insulin-like growth factor I receptor(More)
Ewing sarcoma (ES) is an aggressive bone and soft tissue tumor of children and young adults in which finding effective new targeted therapies is imperative. Here, we report an in-depth preclinical study of the investigational cullin-RING ubiquitin ligase (CRL) inhibitor MLN4924 in ES, as we have recently demonstrated the implication of a CRL component in(More)
Hsp47 is a novel glycoprotein that binds specifically to procollagen and is retained in the ER by its COOH-terminus RDEL peptide sequence (Satoh, M. et al. Jol. Cell Biol. 1996; 133: 469-83). In this paper, we report that erd2P, the KDEL receptor, is distributed, coprecipitates with, and binds to Hsp47. Also, under stress conditions and lowering of pHi, the(More)
Hsps expressed on the cell surface have been associated with tumor invasiveness and used as targets for molecular surveillance. The present study utilized four human oral squamous cell carcinoma cells lines, SCC-4, SCC-9, SCC-15, SCC-25, the murine epidermoid carcinoma cell line LL/2, and primary cultures of human gingival fibroblasts to assess the cell(More)
The aim of this study was to assess patterns of CCND3 gene amplification in bladder cancer and correlate gene status with recurrence-free and progression-free survival. A sequential cohort series of 102 primary bladder tumor samples in which there was enough tissue material to assess CCND3 gene status by fluorescent in situ hybridization (FISH) was the(More)
  • 1