Toshifumi Hoki1, Eriko Katsuta2, Li Yan3, Kazuaki Takabe4, Fumito Ito5. 1. Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York. 2. Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York. 3. Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York. 4. Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York; Department of Surgery, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, The State University of New York, Buffalo, New York; Department of Breast Surgery and Oncology, Tokyo Medical University, Tokyo, Japan; Department of Surgery, Yokohama City University, Yokohama, Japan; Department of Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan. Electronic address: kazuaki.takabe@roswellpark.org. 5. Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, New York; Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York; Department of Surgery, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, The State University of New York, Buffalo, New York. Electronic address: fumito.ito@roswellpark.org.
Abstract
BACKGROUND: Despite a high rate of recurrences, long-term survival can be achieved after the resection of hepatocellular carcinoma (HCC) with effective local treatment. Discovery of adverse prognostic variables to identify patients with high risk of recurrence could improve the management of HCC. Accumulating evidence showing a link between carcinogenesis and increased expression of iron import proteins and intracellular iron prompted us to investigate a role of divalent metal-ion transporter-1 (DMT1) that binds and regulates a variety of divalent metals in HCC. MATERIALS AND METHODS: Clinical and gene expression data from RNA seq in 369 HCC patients were obtained from The Cancer Genome Atlas. Disease-free survival was compared between DMT1 high- and low-expressing tumors, and gene set enrichment analysis was conducted. RESULTS: Patients with lower expression of DMT1 exhibited significantly worse disease-free survival compared with the DMT1 high group (P = 0.044), notably in advanced-stage patients (P = 0.008). DMT1 expression did not differ in etiologies, stages, and differentiation status of HCC. Interestingly, DMT1 expression levels inversely associated with cellular respiratory function in HCC. Furthermore, gene set enrichment analysis revealed that metabolism-related gene sets such as glycolysis, oxidative phosphorylation, and reactive oxygen species pathway were significantly enriched in the DMT1 low-expressing HCC. CONCLUSIONS: Low DMT1 expression associates with increased oxidative phosphorylation as well as glycolysis and identifies early recurrence in HCC patients after surgical treatment.
BACKGROUND: Despite a high rate of recurrences, long-term survival can be achieved after the resection of hepatocellular carcinoma (HCC) with effective local treatment. Discovery of adverse prognostic variables to identify patients with high risk of recurrence could improve the management of HCC. Accumulating evidence showing a link between carcinogenesis and increased expression of iron import proteins and intracellular iron prompted us to investigate a role of divalent metal-ion transporter-1 (DMT1) that binds and regulates a variety of divalent metals in HCC. MATERIALS AND METHODS: Clinical and gene expression data from RNA seq in 369 HCCpatients were obtained from The Cancer Genome Atlas. Disease-free survival was compared between DMT1 high- and low-expressing tumors, and gene set enrichment analysis was conducted. RESULTS:Patients with lower expression of DMT1 exhibited significantly worse disease-free survival compared with the DMT1 high group (P = 0.044), notably in advanced-stage patients (P = 0.008). DMT1 expression did not differ in etiologies, stages, and differentiation status of HCC. Interestingly, DMT1 expression levels inversely associated with cellular respiratory function in HCC. Furthermore, gene set enrichment analysis revealed that metabolism-related gene sets such as glycolysis, oxidative phosphorylation, and reactive oxygen species pathway were significantly enriched in the DMT1 low-expressing HCC. CONCLUSIONS: Low DMT1 expression associates with increased oxidative phosphorylation as well as glycolysis and identifies early recurrence in HCCpatients after surgical treatment.
Authors: Nazario Portolani; Arianna Coniglio; Sara Ghidoni; Mara Giovanelli; Anna Benetti; Guido Alberto Massimo Tiberio; Stefano Maria Giulini Journal: Ann Surg Date: 2006-02 Impact factor: 12.969
Authors: Aravind Subramanian; Pablo Tamayo; Vamsi K Mootha; Sayan Mukherjee; Benjamin L Ebert; Michael A Gillette; Amanda Paulovich; Scott L Pomeroy; Todd R Golub; Eric S Lander; Jill P Mesirov Journal: Proc Natl Acad Sci U S A Date: 2005-09-30 Impact factor: 11.205
Authors: Sahil Mittal; Hashem B El-Serag; Yvonne H Sada; Fasiha Kanwal; Zhigang Duan; Sarah Temple; Sarah B May; Jennifer R Kramer; Peter A Richardson; Jessica A Davila Journal: Clin Gastroenterol Hepatol Date: 2015-07-18 Impact factor: 11.382