Cancer Cell Acid Adaptation Gene Expression Response is Correlated to Tumor-Specific Tissue Expression Profiles and Patient Survival

Research output: Contribution to journalJournal articlepeer-review

The acidic pH of the tumor microenvironment plays a critical role in driving cancer development toward a more aggressive phenotype, but the underlying mechanisms are unclear. To this end, phenotypic and genotypic changes induced by adaptation of cancer cells to chronic acidosis have been studied. However, the generality of acid adaptation patterns across cell models and their correlation to the molecular phenotypes and aggressiveness of human cancers are essentially unknown. Here, we define an acid adaptation expression response shared across three cancer cell models, dominated by metabolic rewiring, extracellular matrix remodeling, and altered cell cycle regulation and DNA damage response. We find that many genes which are upregulated by acid adaptation are significantly correlated to patient survival, and more generally, that there are clear correlations between acid adaptation expression response and gene expression change between normal and tumor tissues, for a large subset of cancer patients. Our data support the notion that tumor microenvironment acidity is one of the key factors driving the selection of aggressive cancer cells in human patient tumors, yet it also induces a growth-limiting genotype that likely limits cancer cell growth until the cells are released from acidosis, for instance during invasion.

Original languageEnglish
Article number2183
JournalCancers
Volume12
Issue number8
Number of pages27
ISSN2072-6694
DOIs
Publication statusPublished - 2020

    Research areas

  • Acid adaptation, Chronic acidosis, Medical transcriptomics, RNA sequencing, Survival analysis, Tumor microenvironment

Number of downloads are based on statistics from Google Scholar and www.ku.dk


No data available

ID: 249769113