4.7 Article

Differential expression of mitochondrial energy metabolism profiles across the metaplasia-dysplasia-adenocarcinoma disease sequence in Barrett's oesophagus

Journal

CANCER LETTERS
Volume 354, Issue 1, Pages 122-131

Publisher

ELSEVIER IRELAND LTD
DOI: 10.1016/j.canlet.2014.07.035

Keywords

Barrett's metaplasia; Oesophageal cancer; Mitochondrial energy metabolism; Mitochondrial dysfunction; Glycolysis; Oxidative phosphmylation

Categories

Funding

  1. Science Foundation Ireland [SFI 11/RFP.1/CAN/3137]

Ask authors/readers for more resources

Contemporary clinical management of Barrett's oesophagus has highlighted the lack of accurate predictive markers of disease progression to oesophageal cancer. This study aims to examine alterations in mitochondrial energy metabolism profiles across the entire disease progression sequence in Barrett's oesophagus. An in-vitro model was used to screen 84 genes associated with mitochondrial energy metabolism. Three energy metabolism genes (ATP12A, COX412, COX8C) were significantly altered across the in-vitro Barrett's disease sequence. In-vivo validations across the Barrett's sequence demonstrated differential expression of these genes. Tissue microarrays demonstrated significant alterations in both epithelial and stromal oxidative phosphorylation (ATP5B and Hsp60) and glycolytic (PKM2 and GAPDH) protein markers across the in-vivo Barrett's sequence. Levels of ATP5B in sequential follow up surveillance biopsy material segregated Barrett's non progressors and progressors to HGD and cancer. Utilising the Seahorse XF24 flux analyser, in-vitro Barrett's and adenocarcinoma cells exhibited altered levels of various oxidative parameters. We show for the first time that mitochondrial energy metabolism is differentially altered across the metaplasia-dysplasia-adenocarcinoma sequence and that oxidative phosphorylation profiles have predictive value in segregating Barrett's non progressors and progressors to adenocarcinoma. (C) 2014 Elsevier Ireland Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available