Increased expression of the autocrine motility factor is associated with poor prognosis in patients with clear cell-renal cell carcinoma

Giuseppe Lucarelli, Monica Rutigliano, Francesca Sanguedolce, Vanessa Galleggiante, Andrea Giglio, Simona Cagiano, Pantaleo Bufo, Eugenio Maiorano, Domenico Ribatti, Elena Ranieri, Margherita Gigante, Loreto Gesualdo, Matteo Ferro, Ottavio De Cobelli, Carlo Buonerba, Giuseppe Di Lorenzo, Sabino De Placido, Silvano Palazzo, Carlo Bettocchi, Pasquale DitonnoMichele Battaglia

Research output: Contribution to journalArticlepeer-review

Abstract

Glucose-6-phosphate isomerase (GPI), also known as phosphoglucose isomerase, was initially identified as the second glycolytic enzyme that catalyzes the interconversion of glucose-6-phosphate to fructose-6-phosphate. Later studies demonstrated that GPI was the same as the autocrine motility factor (AMF), and that it mediates its biological effects through the interaction with its surface receptor (AMFR/gp78). In this study, we assessed the role of GPI/AMF as a prognostic factor for clear cell renal cell carcinoma (ccRCC) cancerspecific (CSS) and progression-free survival (PFS). In addition, we evaluated the expression and localization of GPI/AMF and AMFR, using tissue microarray-based immunohistochemistry (TMA-IHC), indirect immunofluorescence (IF), and confocal microscopy analysis. Primary renal tumor and nonneoplastic tissues were collected from 180 patients who underwent nephrectomy for ccRCC. TMA-IHC and IF staining showed an increased signal for both GPI and AMFR in cancer cells, and their colocalization on plasma membrane. Kaplan-Meier curves showed significant differences in CSS and PFS among groups of patients with high versus low GPI expression. In particular, patients with high tissue levels of GPI had a 5-year survival rate of 58.8%, as compared to 92.1% for subjects with low levels (P

Original languageEnglish
Pages (from-to)e2117
JournalMedicine (United States)
Volume94
Issue number46
DOIs
Publication statusPublished - 2015

ASJC Scopus subject areas

  • Medicine(all)

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