Article (Scientific journals)
Intracellular redox potential is correlated with miRNA expression in MCF7 cells under hypoxic conditions
Johnston, Hannah E.; Dickinson, Paul; Ivens, Alasdair C. et al.
2019In Proceedings of the National Academy of Sciences of the United States of America, 116 (39), p. 19753-19759
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Keywords :
Breast adenocarcinoma; Hypoxia; SERS nanosensors; Surprisal analysis; Tumor microenvironment
Abstract :
[en] 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. © 2019 National Academy of Sciences. All rights reserved.
Research center :
MolSys - Molecular Systems - ULiège
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Johnston, Hannah E.;  School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
Dickinson, Paul;  Institute of Infection and Immunology Research, University of Edinburgh, Edinburgh, EH9 3FL, United Kingdom
Ivens, Alasdair C.;  Institute of Infection and Immunology Research, University of Edinburgh, Edinburgh, EH9 3FL, United Kingdom
Buck, Amy H.;  Institute of Infection and Immunology Research, University of Edinburgh, Edinburgh, EH9 3FL, United Kingdom
Levine, Raphaël David;  Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem, 91904, Israel
Remacle, Françoise  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
Campbell, Colin J.;  School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, United Kingdom
Language :
English
Title :
Intracellular redox potential is correlated with miRNA expression in MCF7 cells under hypoxic conditions
Publication date :
2019
Journal title :
Proceedings of the National Academy of Sciences of the United States of America
ISSN :
0027-8424
eISSN :
1091-6490
Publisher :
National Academy of Sciences
Volume :
116
Issue :
39
Pages :
19753-19759
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Medical Research Scotland [GB]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Leverhulme Trust [GB]
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since 05 January 2020

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