Researchers find epigenetic loss that changes how cells obtain energy from cancer

Researchers find epigenetic loss that changes how cells obtain energy from cancer
The researchers Margalida Rosselló-Tortella, Manel Esteller and Pere Llinàs-Arias. Credit: UNIVERSITY OF BARCELONA

It has been known for decades that cancer cells have an altered metabolism, and it is seen in several biochemical pathways and in particular, in the way they get energy for their survival.

If use the mitochondrial respiratory chain, tumors use aerobic glycolysis, a process that allows them to take energy quickly but depending on glucose. This phenomenon - known as the Warburg effect - is caused by several changes that take place during cell transformation.

Now, a new article describes an epigenetic injury found in human tumours which creates this altered path to take energy from the . The study, published in Journal of Clinical Investigation Insight, is a new research carried out by the group led by Manel Esteller, professor of Genetics of the Faculty of Medicine and Health Sciences of the University of Barcelona (UB), ICREA researcher, coordinator of the Cancer Epigenetics and Biology Program at IDIBELL, and director of the Josep Carreras Institute.

According to Professor Esteller, who led the new scientific study, "we found squamous tumors - in the head, neck, esophagus and cervix - show activity loss of the SVIP gene, which prevents deterioration of proteins that are important for cell balance. The fault in the SVIP gene function causes the destruction of the metabolic mechanisms that allow glucose's physiologic use to get energy in a controlled way, and which is finally replaced by a kind of molecular 'fast food' that gets cheap for the tumor cell".

"We have also seen patients with this metabolic change that show a shorter survival over the course of their disease", continues Manel Esteller. "However, ' addiction to glucose could be their weakness. Therefore, pre- show that patients with the epigenetic loss of the SVIP gene are sensitive to drugs against glucose receptor, which block the entrance of this molecule and cause a kind of 'abstinence syndrome' of the tumor that holds their growth back".


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More information: Pere LlinĂ s-Arias et al, Epigenetic loss of the endoplasmic reticulum-associated degradation inhibitor SVIP induces cancer cell metabolic reprogramming, JCI Insight (2019). DOI: 10.1172/jci.insight.125888
Citation: Researchers find epigenetic loss that changes how cells obtain energy from cancer (2019, March 15) retrieved 19 August 2019 from https://medicalxpress.com/news/2019-03-epigenetic-loss-cells-energy-cancer.html
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