期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 116, 期 39, 页码 19753-19759出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1909455116
关键词
surprisal analysis; hypoxia; tumor microenvironment; SERS nanosensors; breast adenocarcinoma
资金
- Medical Research Scotland Studentship [PhD-646-2012]
- Leverhulme Project Grant [RPG-2012-680]
- Fonds National de la Recherche Scientifique (Belgium)
Hypoxia is a ubiquitous feature of cancers, encouraging glycolytic metabolism, proliferation, and resistance to therapy. Nonetheless, hypoxia is a poorly defined term with confounding features described in the literature. Redox biology provides an important link between the external cellular microenvironment and the cell's response to changing oxygen pressures. In this paper, we demonstrate a correlation between intracellular redox potential (measured using optical nanosensors) and the concentrations of microRNAs (miRNAs) involved in the cell's response to changes in oxygen pressure. The correlations were established using surprisal analysis (an approach derived from thermodynamics and information theory). We found that measured redox potential changes reflect changes in the free energy computed by surprisal analysis of miRNAs. Furthermore, surprisal analysis identified groups of miRNAs, functionally related to changes in proliferation and metastatic potential that played the most significant role in the cell's response to changing oxygen pressure.
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