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Home NEWS Science News Chemistry

Preventing metastasis by stopping cancer cells from making fat

Bioengineer by Bioengineer
January 23, 2020
in Chemistry
Reading Time: 2 mins read
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Credit: copy University of Louvain

Olivier Feron, a researcher at the University of Louvain (UCLouvain) Institute of Experimental and Clinical Research, seeks to understand how metastases form from a tumour. He already demonstrated that the most aggressive cancer cells use significant amounts of lipids as energy sources. Now Prof. Feron has discovered that cancer cells store lipids in small intracellular vesicles called ‘lipid droplets’. Cancer cells loaded with lipids are more invasive and therefore more likely to form metastases. Prof. Feron and his team sought to identify the link between lipid storage and metastatisation.

They identified a factor called TGF-beta2 as the switch responsible for both lipid storage and the aggressive nature of cancer cells. Moreover, it appeared that the two processes were mutually reinforcing. In fact, by accumulating lipids, more precisely fatty acids, cancer cells build up energy reserves, which they can then use as needed throughout their metastatic course.

Already known was that the acidity found in tumours promotes cancer cells’ invasion of healthy tissue. The process requires the detachment of the cancer cell from its original anchor site and the ability to survive under such conditions (which are fatal to healthy cells).

The new finding: UCLouvain researchers demonstrated that this acidity promotes, via the same TGF-beta2 ‘switch’, the invasive potential and formation of lipid droplets. These provide the invasive cells with the energy they need to move around and withstand the harsh conditions encountered during the metastatisation process. It’s like a mountaineer who takes the food and equipment necessary to reach the summit in spite of complex weather conditions.

Concretely, this UCLouvain research opens up new therapeutic avenues thanks to the discovery of the different actors involved in metastasis. These actors can thus be targeted and combated. Prof. Feron and his team show that it is possible to reduce tumour invasiveness and prevent metastases using specific inhibitors of TGF-beta2 expression but also compounds capable of blocking the transport of fatty acids or the formation of triglycerides. Among the latter are new drugs that are being evaluated to treat obesity. Their indications could therefore be rapidly extended to counter the development of metastases, which is the major cause of death among cancer patients.

The findings are published in the prestigious scientific journal Nature Communications. The research was carried out with funding from the Belgian Cancer Foundation, the Belgian National Fund for Scientific Research, the Télévie telethon, and a Wallonia Brussels Federation joint research grant (ARC).

###

Media Contact
Isabelle Decoster
isabelle.decoster@uclouvain.be
321-047-8870

Related Journal Article

http://dx.doi.org/10.1038/s41467-019-14262-3

Tags: cancerCell BiologyMedicine/HealthPharmaceutical SciencePublic Health
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