Analyses of the transcriptome and metabolome demonstrate that HIF1α mediates altered tumor metabolism in clear cell renal cell carcinoma.

TitleAnalyses of the transcriptome and metabolome demonstrate that HIF1α mediates altered tumor metabolism in clear cell renal cell carcinoma.
Publication TypeJournal Article
Year of Publication2015
AuthorsMinton DR, Fu L, Chen Q, Robinson BD, Gross SS, Nanus DM, Gudas LJ
JournalPLoS One
Volume10
Issue4
Paginatione0120649
Date Published2015
ISSN1932-6203
KeywordsAerobiosis, Animals, Carcinogenesis, Carcinoma, Renal Cell, Gene Expression Profiling, Gene Expression Regulation, Neoplastic, Glycolysis, Humans, Hypoxia-Inducible Factor 1, alpha Subunit, Kidney, Kidney Neoplasms, Lactic Acid, Male, Metabolomics, Mice, Mice, Transgenic, RNA, Messenger
Abstract

Hypoxia inducible factor 1 alpha (HIF1α) is a transcription factor that is frequently stabilized and active in human clear cell renal cell carcinoma (ccRCC). We have found that constitutively active HIF1α is sufficient to cause neoplastic transformation in a murine model of ccRCC termed the TRACK model. RNA sequencing (RNAseq) and untargeted metabolomics analyses of samples from TRACK kidneys demonstrate that HIF1α activates the transcription of genes that cause increased glucose uptake, glycolysis, and lactate production, as well as a decrease in the flux of pyruvate entering the tricarboxylic acid (TCA) cycle and a decrease in oxidative phosphorylation; these changes are identical to those observed in human ccRCC samples. These studies show that a constitutively active HIF1α promotes tumorigenesis in TRACK mice by mediating a metabolic switch to aerobic glycolysis, i.e., the Warburg effect, and suggest that TRACK mice are a valid model to test novel therapies targeting metabolic changes to inhibit human ccRCC.

DOI10.1371/journal.pone.0120649
Alternate JournalPLoS ONE
PubMed ID25830305
PubMed Central IDPMC4382166
Grant ListP01 HD067244 / HD / NICHD NIH HHS / United States
R37 HL087062 / HL / NHLBI NIH HHS / United States
T32 CA062948 / CA / NCI NIH HHS / United States
5T32CA062948 / CA / NCI NIH HHS / United States