The environmental carcinogen benzo[a]pyrene induces a Warburg-like metabolic reprogramming dependent on NHE1 and associated with cell survival - Archive ouverte HAL Access content directly
Journal Articles Scientific Reports Year : 2016

The environmental carcinogen benzo[a]pyrene induces a Warburg-like metabolic reprogramming dependent on NHE1 and associated with cell survival

Laurence Huc

Abstract

Cancer cells display alterations in many cellular processes. One core hallmark of cancer is the Warburg effect which is a glycolytic reprogramming that allows cells to survive and proliferate. Although the contributions of environmental contaminants to cancer development are widely accepted, the underlying mechanisms have to be clarified. Benzo[a]pyrene (B[a]P), the prototype of polycyclic aromatic hydrocarbons, exhibits genotoxic and carcinogenic effects, and it is a human carcinogen according to the International Agency for Research on Cancer. In addition to triggering apoptotic signals, B[a]P may induce survival signals, both of which are likely to be involved in cancer promotion. We previously suggested that B[a]P-induced mitochondrial dysfunctions, especially membrane hyperpolarization, might trigger cell survival signaling in rat hepatic epithelial F258 cells. Here, we further characterized these dysfunctions by focusing on energy metabolism. We found that B[a]P promoted a metabolic reprogramming. Cell respiration decreased and lactate production increased. These changes were associated with alterations in the tricarboxylic acid cycle which likely involve a dysfunction of the mitochondrial complex II. The glycolytic shift relied on activation of the Na+/H+ exchanger 1 (NHE1) and appeared to be a key feature in B[a]P-induced cell survival related to changes in cell phenotype (epithelial-to-mesenchymal transition and cell migration).
Fichier principal
Vignette du fichier
The environmental carcinogen-CCBY (1).pdf (1.97 Mo) Télécharger le fichier
srep30776-s1.pdf (1.07 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01359569 , version 1 (25-11-2016)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

Kevin Hardonnière, Elise Saunier, Anthony Lemarié, Morgane Fernier, Isabelle Gallais, et al.. The environmental carcinogen benzo[a]pyrene induces a Warburg-like metabolic reprogramming dependent on NHE1 and associated with cell survival. Scientific Reports, 2016, 6 (1), pp.30776. ⟨10.1038/srep30776⟩. ⟨hal-01359569⟩
239 View
128 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More